Leather waste processing equipment

Abstract

The present invention relates to a leather waste processing device, comprising a soaking tank and a horizontally arranged drum; the drum is arranged in the soaking tank, the side wall of the drum is a filter screen, a spray pipe is installed above the drum, a rotating shaft is arranged inside the drum, and the rotating shaft is used to drive the drum to rotate; reinforcing ribs are arranged on the outside of the drum side wall; the rotating shaft is fixedly connected to the position of the reinforcing ribs on the inside of the drum side wall through multiple support rods. The leather waste processing device provided by the present invention processes the leather waste by adding chromium-containing blue leather wire into the drum. During the treatment process of alkali soaking, acid soaking, water washing and preparing gelatin solution, the leather waste does not need to be removed from the drum, and some residues generated during the preparation process can be confined inside the drum, and the gelatin solution can be discharged from the filter layer of the drum, making the overall preparation process more convenient to operate. In addition, the device can cover various steps from alkali soaking to primary filtration, and has a high degree of integration.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, and in particular to leather waste processing equipment for preparing industrial glue and industrial protein by utilizing discarded leather. Background Art

[0002] A large amount of leather waste is generated in the leather production process, such as chrome-containing blue leather silk and blue leather blocks. For energy conservation and environmental protection reasons, leather waste is currently recycled and processed into industrial glue, industrial protein and other materials. In the above processing process, leather waste requires multiple steps, such as alkali soaking, acid soaking, water washing and filtration. In addition, due to the large amount of processing each time, it is very troublesome to transport the leather waste between each process, and multiple different equipment needs to be prepared for multiple processes. Summary of the Invention

[0003] In order to solve the problems existing in the above-mentioned technology, the present invention provides a leather waste processing equipment, including a soaking tank and a horizontally arranged drum; the drum is arranged in the soaking tank, the side wall of the drum is a filter, a spray pipe is installed above the drum, and a rotating shaft is arranged inside the drum, and the rotating shaft is used to drive the drum to rotate; reinforcing ribs are arranged on the outer side of the drum side wall; the rotating shaft is fixedly connected to the position of the inner side of the drum side wall corresponding to the reinforcing ribs through multiple support rods.

[0004] The drum is composed of two halves and a connecting ring. The halves include a bottom plate and side walls. The ends of the side walls of the two halves away from the bottom plate are rotatably engaged with the two sides of the connecting ring.

[0005] A fixing rod is provided at the bottom outside the connecting ring, and one end of the fixing rod away from the connecting ring is fixedly connected to the bottom of the soaking pool. A water inlet pipe is provided passing through the connecting ring.

[0006] Wherein, a water distribution pipe coaxial with the rotating shaft is provided at one end of the water inlet pipe located inside the rotating drum, and a plurality of support rods are located on both sides of the water distribution pipe in the axial direction.

[0007] Wherein, a plurality of nozzles are arranged on the upper side and the lower side of the water distribution pipe.

[0008] Wherein, an air extraction pipe is provided running through the connecting ring.

[0009] Wherein, a liquid inlet and a liquid outlet are provided on the side wall of the soaking pool.

[0010] Wherein, at least one sampling mechanism is provided on the top of the side wall of the soaking tank, and the sampling mechanism is a pulley sampling mechanism.

[0011] Among them, a plurality of arc-shaped brackets are arranged on the top of the side wall of the soaking pool, and the plurality of brackets are arranged at intervals along the axial direction of the drum, and the brackets are used to set up the spray pipes.

[0012] Wherein, an operating table is arranged around the outside of the soaking pool.

[0013] Wherein, a feed port is provided on the side wall of the drum.

[0014] The beneficial effects of the present invention are as follows: the leather waste processing equipment provided by the present invention processes the leather waste by adding chromium-containing blue leather silk into the inside of the drum. During the treatment process of alkali soaking, acid soaking, water washing and preparing the gelatin solution, there is no need to remove the leather waste from the drum, and the residue generated during the preparation process can be confined inside the drum, and the gelatin solution can be discharged from the filter layer of the drum, making the overall preparation process more convenient to operate, and the device can cover all steps from alkali soaking to primary filtration, with a high degree of integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 is a perspective view of embodiment 1 of the present invention;

[0017] Figure 2 Schematic diagram of the internal structure of the drum according to the first embodiment of the present invention (the filter is not shown);

[0018] Figure 3 is an enlarged view of a sampling mechanism according to a first embodiment of the present invention;

[0019] Figure 4 is a three-dimensional diagram of a rotating drum according to a second embodiment of the present invention;

[0020] Figure 5 This invention Figure 4 AA sectional view;

[0021] Figure 6 This invention Figure 5 Exploded diagram of .

[0022] Description of Reference Numerals

[0023] 1. Drum, 11. Reinforcement ribs, 12. Filter, 13. Support rod, 14. Rotating shaft, 15. Feed port, 16. Connecting ring, 17. Half, 2. Soaking tank, 21. Liquid inlet pipe, 22. Liquid discharge pipe, 3. Drive shaft, 4. Operating table, 5. Bracket, 51. Spray pipe, 52. Water inlet pipe, 53. Water distribution pipe, 54. Exhaust pipe, 6. Sampling mechanism, 61. Pulley. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example 1

[0025] like Figure 1 、 Figure 2 and Figure 3 As shown, a leather waste processing device provided in an embodiment includes a soaking tank 2 and a horizontally arranged drum 1, wherein the drum 1 is composed of side walls and two circular bottom plates (not shown);

[0026] The drum 1 is arranged in the soaking tank 2. The side wall of the drum 1 is a filter screen 12, which can be a metal filter screen. The liquid in the soaking tank 2 can pass through the filter screen 12 and enter the inside of the drum. A hinged feed port 15 is set on the side wall of the drum 1.

[0027] A plurality of arc-shaped brackets 5 are provided at the top of the side wall of the soaking tank 2. The plurality of brackets 5 are arranged at intervals along the drum axis 1 and are used to set up a spray pipe located above the drum 1. The spray pipe 51 is connected to the external water reservoir. A plurality of high-pressure nozzles (not shown) are provided below the spray pipe 51. A heat source inlet (not shown) can be provided on the side wall of the soaking tank 2.

[0028] A rotating shaft 14 is provided inside the drum 1 for driving the drum 1 to rotate. The rotating shaft 14 can be fixedly connected to both ends of the drum 1 to provide torque. In order to obtain greater torque and better stability of the drum 1, the rotating shaft 14 can be connected to the positions of the reinforcing ribs 11 on the inner side of the drum side wall through a plurality of support rods 13. The support rods 13 can also play a role in assisting in stirring the leather waste.

[0029] A driving shaft 3 is provided on the side wall of the soaking tank 2 to penetrate therethrough. The driving shaft 3 is used to drive the rotating shaft 14 to rotate. The driving shaft 3 is powered by an external motor. The driving shaft 3 and the rotating shaft 14 can be a whole shaft.

[0030] In addition, a liquid inlet 21 and a liquid outlet 22 are provided on the side wall of the soaking tank 2 for inputting and outputting the liquid in the soaking tank 2, and at least one sampling mechanism 6 is provided on the top of the side wall of the soaking tank 2. The sampling mechanism 6 is a pulley sampling mechanism, which has a pulley 61 mounted on the top of the side wall of the soaking tank 2. A hanging line is provided on the pulley 61, and a bucket is provided at one end of the hanging line located inside the soaking tank 2. Using the sampling mechanism 6, the staff can sample the liquid inside the soaking tank 2 to detect its pH and other data.

[0031] At the same time, an operating table 4 is arranged around the outside of the soaking tank 2 to facilitate sampling and other operations.

[0032] Taking the preparation of industrial glue from chrome-containing blue leather silk as an example, the working principle of the present invention is: chrome-containing blue leather silk (leather waste) is added to the inside of the drum 1 through the feed port 15, and the alkali liquid inside the external alkali liquid pool is added to the soaking tank 2 through the liquid inlet pipe 21 for alkali soaking, and at the same time, the drum 1 is driven to rotate by the driving shaft 3 for alkali soaking.

[0033] The purpose of alkali soaking is to destroy certain chemical cross-links in collagen, impart toughness, and remove impurities, other proteins, carbohydrates, etc.

[0034] The main source of waste gas pollution is the malodorous gas G2-1 produced during the alkali leaching process. The main pollutants are ammonia, hydrogen sulfide and odor concentration. Therefore, gas collection hoods can be installed above the drum. The waste gas is collected by the gas collection hood and then treated by the alkali spray tower and activated carbon adsorption device before being discharged through the exhaust pipe.

[0035] After the alkali soaking is completed, the alkali solution is discharged through the drain pipe 22 for recycling. The collagen treated by alkali soaking needs to be washed with fresh water discharged through the spray pipe 51. At the same time, clean water is also added to the soaking tank 2 to wash away impurities and waste alkali on the leather.

[0036] After the water washing is completed, the waste water is discharged and pickling is performed. A certain amount of sulfuric acid solution and water are added to the soaking tank 2 through the liquid inlet pipe 21, and stirred on time for pickling and neutralization. After the pickling is completed, the acid solution is discharged through the liquid discharge pipe 22 for recycling.

[0037] After the acid soaking is completed, the wastewater in the soaking tank 2 is discharged through the drain pipe 22. It should be noted that the wastewater inside the drum 1 will seep out of the drum 1 and be discharged at the same time. The same is true for alkali soaking, and the waste gas treatment is the same as alkali soaking.

[0038] Clean water is added again through the spray pipe 51 for washing. At this point, the waste scraps have been completely reduced from blue leather scraps to white fresh raw materials.

[0039] Afterwards, a heat source is introduced into the soaking tank through a heat source inlet (not shown). The heat source can be high-temperature hot water to heat the leather waste. Under the heating of hot water, the hydrogen bonds of collagen are broken, the triple helix structure disintegrates, and then slightly hydrolyzed to obtain a dilute gelatin solution. The gelatin solution seeps out from the filter screen 12 on the side wall of the drum 1 and is discharged through the drain pipe 22. Impurities in the preparation process are intercepted by the filter layer 12, that is, the primary filtration is completed. The discharged gelatin solution is then filtered, concentrated, dried and packaged to obtain an industrial glue product. Example 2

[0040] The difference between this embodiment and the first embodiment is that Figures 4 to 6As shown, the drum 1 is composed of two halves 17 and a connecting ring 16. The halves 17 include a bottom plate and side walls. The ends of the side walls of the two halves 17 away from the bottom plate are rotatably engaged with the two sides of the connecting ring 16. That is, the connecting ring 16 has annular grooves on both sides, and the side walls of the halves 17 are embedded in the grooves. Ball bearings are arranged in the grooves. In this way, the two halves 17 are connected and combined into the drum 1 through the connecting ring 16. The halves 17 can rotate relative to the connecting ring 16. Since the multiple support rods 13 are fixedly connected to the side walls of the drum 1 and the rotating shaft 14 at the same time, the two halves 17 can rotate synchronously.

[0041] A fixing rod (not shown) is provided at the outer bottom of the connecting ring 16, and one end of the fixing rod away from the connecting ring 16 is fixedly connected to the bottom of the soaking tank 2, so that the connecting ring 16 can remain stationary when the half 17 rotates. A water inlet pipe 52 is provided through the connecting ring 16.

[0042] The working principle of this embodiment is that when water washing is required, the inside and outside of the drum 1 can be cleaned simultaneously through the water inlet pipe 52 and the spray pipe 51 while the drum 1 is rotating, so that the cleaning is more thorough and more efficient.

[0043] In order to further improve the cleaning efficiency inside the drum 1, a water distribution pipe 53 coaxial with the rotating shaft 14 can be set at one end of the water inlet pipe 52 located inside the drum 1, and multiple nozzles (not shown) are set on the upper and lower sides of the water distribution pipe 53, and multiple support rods 13 are located on both sides of the axial direction of the water distribution pipe 53.

[0044] At the same time, since malodorous gases are generated during the production process, it is not enough to just pass through the gas collecting hood above the drum 1. Malodorous gases will continue to be released from the inside of the drum 1. Therefore, if Figure 4 As shown, a through-exhaust pipe 54 may be provided on the connecting ring 16 to assist in collecting the malodorous gas.

[0045] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. A leather waste processing equipment, characterized in that, It includes a soaking tank and a horizontally arranged drum; The drum is composed of side walls and two circular bottom plates. The drum is arranged in the soaking tank. The side walls of the drum are filter screens. A spray pipe is installed above the drum. A rotating shaft is arranged inside the drum to drive the drum to rotate. Reinforcement ribs are provided on the outer side of the drum side wall; The rotating shaft is fixedly connected to the inner side of the drum side wall through a plurality of support rods; The drum is composed of two halves and a connecting ring. The halves include a bottom plate and side walls. The connecting ring has annular grooves on both sides. The side walls of the halves are embedded in the grooves. Ball bearings are arranged in the grooves. The ends of the side walls of the two halves away from the bottom plate are rotatably engaged with the two sides of the connecting ring. A fixing rod is provided at the bottom outside the connecting ring, and one end of the fixing rod away from the connecting ring is fixedly connected to the bottom of the soaking tank, and a water inlet pipe is provided through the connecting ring; A water distribution pipe parallel to the rotating shaft is provided at one end of the water inlet pipe located inside the rotating drum, and a plurality of support rods are located on both sides of the water distribution pipe in the axial direction; A plurality of nozzles are provided on the upper and lower sides of the water distribution pipe; The connecting ring is provided with an exhaust pipe running through it; A plurality of arc-shaped brackets are arranged on the top of the side wall of the soaking pool, and the plurality of brackets are arranged at intervals along the axial direction of the drum, and the brackets are used to set up the spray pipes.

2. The leather waste processing equipment according to claim 1, characterized in that: A liquid inlet and a liquid outlet are arranged on the side wall of the soaking pool.

3. The leather waste processing equipment according to claim 1, characterized in that: At least one sampling mechanism is provided on the top of the side wall of the soaking tank, and the sampling mechanism is a pulley sampling mechanism.

4. The leather waste processing equipment according to claim 1, characterized in that: An operating table is arranged around the outside of the soaking pool.

5. The leather waste processing equipment according to claim 1, characterized in that: A feed port is provided on the side wall of the drum.

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