FIELD

The present invention relates to the technical field of impurity-removal devices, more specifically to the technical field of a secondary impurity-removal recycling device for refining cotton.

BACKGROUND

Refined cotton is white cotton fibre made of cotton linters after processing and being refined, known as a special industrial additive. As raw cotton linters are the fibre that is stripped by a delinter from short fibre on cotton seeds, the fibre is often mixed with impurities such as cotton seed hulls, sand, cotton dust, iron filings, etc., so it is particularly important to remove such impurities during the production process. The removed impurities still contain some raw cotton linters, after impurity-removal was only performed once. If the secondary impurity-removal is not performed, some raw materials will be wasted, which will increase production costs and reduce operating benefits. The secondary impurity-removal generally comprises drum impurity-removal, rods-and-trips impurity-removal and linter-cleaning impurity-removal, at present, the various impurity-removal device involved in the secondary impurity-removal process has many shortcomings.

Among them, the impurity-removal effect of traditional drum impurity-removal device is not very satisfactory, and the cotton linters after the impurity-removal still contain more impurities, which does not facilitate subsequent processing of cotton linters and adversely affects the quality of the final refined cotton.

The traditional rods-and-trips impurity-removal device has the following shortcomings. As it is easy to agglomerate the cotton linters entering the rods-and-trips impurity-removal device, the impurities contained in the cotton linters cannot be fully scattered out, thereby seriously influencing the impurity-removal effect.

The traditional linter-cleaning impurity-removal device has the following shortcomings. First, the linter-cleaning impurity-removal device generally adopts drum impurity-removal, during the impurity-removal process, the impurities in the outer layer of cotton linters cannot enter the drum through the mesh of the drum, and will be directly scraped off and sent into the next step, so that the impurities are not effectively removed, and the impurity-removal effect is not very satisfactory. Second, as the last step of the secondary impurity-removal, since the impurities in the cotton linters are generally very small, and the mesh hole of the drum is also small, so that the mesh holes of the drum are easily blocked by impurities or cotton fibre, which needs to clean the mesh, and yet by traditional way of cleaning them, staffs blow the drum using a blowing pipe, thus increasing the staffs' labour intensity.

SUMMARY

The object of the present invention is to solve the shortcomings of the traditional device and provide a secondary impurity-removal recycling system for refining cotton that can improve the impurity-removal effect, reduce the impurity content in the cotton linters after removing impurities, facilitate the subsequent processing of the cotton linters and lighten the staffs' labour.

In order to solve the above-mentioned technical problem, the technical solutions adopted in the present invention are as follows.

A secondary impurity-removal recycling system for refining cotton comprises a drum impurity-removal mechanism, a rods-and-trips impurity-removal mechanism and a linter-cleaning impurity-removal mechanism. The drum impurity-removal mechanism comprises a first bin shell, a first induced draft fan, a second induced draft fan, a first drum, a first motor, a second motor, a first connecting sleeve and a first rotary shaft. A first feeding opening is set on the side of the first bin shell, in which the first drum is movably installed, and the first drum is tube shaped. A first mesh is set on the peripheral wall of the first drum, and a first scraper is set at the first feeding opening inside the first bin shell, opposite the outer peripheral wall of the first drum. One end of the first drum is provided with a first impurity-discharging pipe, the outer periphery of which is provided with a first annular hump. The first connecting sleeve is fixedly installed on the outer wall of the first bin shell, and the first impurity-discharging pipe is movably stuck in the first connecting sleeve through the first annular hump, and communicates with the first connecting sleeve. The first induced draft fan communicates with the first connecting sleeve through a first air duct, and the first motor is drivingly connected with the first drum. A discharging pipe is set at the bottom of the first bin shell, and arc plates having the same centre and the same radius are set on the two side walls of the discharging pipe, respectively. A impurity-absorbing cavity is set on the outside of the arc plate on one side, and a second mesh communicating with the impurity-absorbing cavity is set on the arc plate. An impurity-outlet is set on the outer side wall of the impurity-absorbing cavity, and the second induced draft fan is connected to the impurity-outlet through a second air duct. The first rotary shaft is movably inserted in the discharging pipe, and a second scraper is set on the first rotary shaft, opposite the inner side wall of the arc plate. The second motor is drivingly connected with the first rotary shaft. The rods-and-trips impurity-removal mechanism comprises a base, a vibrating sieve bin, a spring, a vibrating motor, a hollow axis tube, a second connecting sleeve, a second sealing ring, a high-pressure blower, a third motor, a hollow body, a second rotary shaft, a fourth motor, a canvas tube and a hose. A supporting column is set on the base, and a supporting frame is set on the vibrating sieve bin, and the supporting frame of the vibrating sieve bin is installed on the supporting column through the spring. The vibrating motor is fixedly installed on the vibrating sieve bin, and the vibrating sieve bin is provided with a second feeding opening and a discharging opening, and the second feeding opening communicates with the discharging pipe of the drum impurity-removal mechanism. Sieving holes are set on the bottom wall of the vibrating sieve bin, in which the hollow axis tube is movably inserted, and the hollow axis tube located in the vibrating sieve bin is provided with rods-and-trips spirally arranged and a spraying tube communicating with the inside of the hollow axis tube. The third motor is fixedly installed on the supporting frame, and is drivingly connected to the hollow axis tube, and the second connecting sleeve is fixedly installed on the vibrating sieve bin. A connecting head communicating with the inside of the hollow axis tube is set on one end of the hollow axis tube, and is movably stuck in the second connecting sleeve and communicates with the second connecting sleeve. The second sealing ring is fixedly stuck in the second connecting sleeve, which encircles the outside of the connecting head, and the high-pressure blower is fixedly installed on the base, and is connected to the second connecting sleeve through the hose. The hollow body is fixedly installed on the base, and is located under the vibrating sieve bin, and the top wall of the hollow body is provided with an impurity-inlet. The impurity-inlet of the hollow body is connected to the sieving holes of the vibrating sieve bin through the canvas tube, and an impurity-discharging opening is set at the bottom of the hollow body. The second rotary shaft is movably inserted in the hollow body, and a spiral rib plate is set on the second rotary shaft located in the hollow body. The fourth motor is fixedly installed on the base, and is drivingly connected with the second rotary shaft. The linter-cleaning impurity-removal mechanism comprises a frame, a second bin shell, a third induced draft fan, a second drum, a first licker-in, a second licker-in, a third licker-in, a pressuring roller, a bottom plate, a blowing pipe, a high-pressure air bag, a pulse valve, a fifth motor, a sixth motor, a seventh motor and a third connecting sleeve. The second bin shell is fixedly installed on the frame, and the bottom and the rear of the second bin shell are open. A third feeding opening is set on the top wall of the front of the second bin shell, and communicates with the discharging opening of the rods-and-trips impurity-removal mechanism. The first licker-in and the second licker-in are movably installed in the second bin shell, respectively, and the second licker-in is located at the third feeding opening of the second bin shell. A first spike and a second spike are set on the periphery of the first licker-in and the second licker-in, respectively. The fifth motor is drivingly connected with the first licker-in and the second licker-in, respectively. The bottom plate is fixedly installed in the second bin shell and is located under the first licker-in, and the bottom plate is provided with impurity-leaking holes. The second drum is movably installed in the second bin shell, and is tube shaped, and impurity-absorbing holes are set on the peripheral wall of the second drum. A third scraper opposite the outer peripheral wall of the second drum is set at the rear of the second bin shell, and a discharging hopper is set at the third scraper. A second impurity-discharging pipe is set at one end of the second drum, and a second annular hump is set on the outer periphery of the second impurity-discharging pipe. The third connecting sleeve is fixedly installed on the outer wall of the second bin shell, and the second impurity-discharging pipe is movably stuck in the third connecting sleeve through the second annular hump, and communicates with the third connecting sleeve. The third induced draft fan communicates with the third connecting sleeve through a third air duct, and the sixth motor is in drivingly connected with the second drum. The high-pressure gas bag is fixedly installed on the frame, and the pulse valve is fixedly installed on the high-pressure gas bag and communicates with the high-pressure gas bag. The blowing pipe communicates with the pulse valve, and is inserted in the second drum, and a spraying nozzle opposite the impurity-absorbing holes is set on the blowing pipe located in the second drum. The pressing roller is movably installed in the second bin shell and located above the second drum, and the third licker-in is movably installed in the second bin shell and located diagonally above the second drum. A third spike is set on the periphery of the third licker-in, and the seventh motor is drivingly connected with the third licker-in.

The drum impurity-removal mechanism further comprises a first sealing ring. The first sealing ring is fixedly stuck in the first connecting sleeve, and encircles the outside of the first annular hump.

the first drum (A4) is movably installed in the first bin shell (A1) through a first bearing (A11), the first motor (A5) is fixedly installed on the first bin shell (A1), a first gear (A17) is set on the other end of the first drum (A4), and a second gear (A18) is set on the output shaft of the first motor (A5), and meshes with the first gear (A17), the first rotary shaft (A9) is movably inserted in the discharging pipe (A19) through a second bearing (A25), the second motor (A6) is fixedly installed on the discharging pipe (A19), and the second motor (A6) is drivingly connected with the first rotary shaft (A9) through a coupling (A27).

The hollow axis tube is movably inserted in the vibrating sieve bin through a third bearing. A first belt pulley is set on the output shaft of the third motor, and a second belt pulley is set at the end of the hollow axis tube, and drivingly connected with the first belt pulley. The second rotary shaft is movably inserted in the hollow body through a fourth bearing. A third belt pulley is set on the output shaft of the fourth motor, and a fourth belt pulley is set at the end of the second rotary shaft, and is belt-drivingly connected with the third belt pulley.

The lower end of the spring is fixed on the supporting column, and the supporting frame is fixedly set on the upper end of the spring.

The second connecting sleeve is fixedly installed on the vibrating sieve bin by a supporting seat, and the hollow body is fixedly installed on the base by a supporting rod.

The first licker-in and the second licker-in are movably installed in the second bin shell through a fifth bearing and a sixth bearing, respectively, and a fifth belt pulley is set at one end of the first licker-in and the second licker-in, respectively. The first licker-in is belt-drivingly connected to the second licker-in with the fifth belt pulley. The fifth motor is fixedly installed on the second bin shell. A sixth belt pulley is set on the other end of the first licker-in, and a seventh belt pulley is set and the output shaft of the fifth motor, and is drivingly connected with the sixth belt pulley. The second drum is movably installed in the second bin shell through a seventh bearing, and the sixth motor is fixedly installed on the frame. A third gear is set on the other end of the second drum, and a fourth gear is set on the output shaft of the sixth motor, and meshes with the third gear. The pressuring roller is movably installed in the second bin shell through an eighth bearing, and the third licker-in is movably installed in the second bin shell through a ninth bearing. An eighth belt pulley is set at one end of the third licker-in, and the seventh motor is fixedly installed on the second bin shell. A ninth belt pulley is set on the output shaft of the seventh motor, and belt-drivingly connected with the eighth belt pulley.

The linter-cleaning impurity-removal mechanism further comprises a third sealing ring and a fourth sealing ring. The third sealing ring is fixedly stuck in the third connecting sleeve and encircles the outside of the second annular hump. A pipe sleeve is set on the second drum, and the blowing pipe is movably inserted through the pipe sleeve and the second drum through a tenth bearing. The fourth sealing ring is fixedly stuck in the pipe sleeve and encircles the outside of the blowing pipe.

The beneficial effects that the invention can achieve by adopting the above technical solutions are that:

1. After the drum impurity-removal mechanism removes impurities through the first drum, the cotton linters are adsorbed on the arc plate by the second induced draft fan, so that the impurities are sucked into the impurity-absorbed cavity through the second mesh, which improves the drum impurity-removal effect, fully facilitates the subsequent processing of cotton linters, and effectively improves the quality of the final refined cotton.

2. The rods-and-trips impurity-removal mechanism breaks and disperses the cotton linters through the rods-and-trips, at the same time, the high-pressure blower and the blowing pipe spray high-pressure air to blow away the cotton linters, to fully scatter the impurities in the cotton linters, then sieve them through the vibrating sieve bin driven by the vibrating motor, so that the impurities are shaken down and discharged from the sieving holes, which improves the impurity-removal effect.

3. The cotton linters adsorbed on the second drum are stripped by the third spike on the third licker-in, so that the thickness of the cotton layer on the second drum is maintained at a certain thickness to avoid inability to effectively remove the impurities in the outer cotton layer for too thick cotton layer, which improves the impurity-removal effect, and reduces the impurity content in the cotton linters after impurity-removal. When the impurity-absorbing holes of the second drum need to be cleaned, the compressed air in the high-pressure air bag is sprayed out through the blowing pipe and spraying nozzle, to backwards blow the impurity-absorbing holes, so that there is no need for manual cleaning, which reduces the staffs' work intensity.

