Pickled leather pretreatment equipment for leather full vegetable tanning processing

Abstract

The utility model relates to the technical field of leather processing, in particular to pickled leather pretreatment equipment for leather full vegetable tanning processing, which comprises a machine body, a rotary drum is rotatably arranged on the machine body in a driving manner, connecting pipes are symmetrically connected to the back of the rotary drum, valves are arranged on the connecting pipes, and two corrugated air pipes are arranged. The corrugated air pipe is connected with the connecting pipe through the connecting assembly. The mounting ring at the end of the corrugated air pipe is connected with the connecting cylinder in a sleeving mode, the positioning block is correspondingly inserted into the sliding groove, the connecting cylinder is rotated till a sealing gasket at the bottom end of the mounting ring is tightly clamped with the convex ring, the positioning block is clamped with the mounting ring, then the position of the connecting cylinder is fixed, and connection of the corrugated air pipe and the connecting pipe is completed. The air blower works to blow air into the rotary drum along the corrugated air pipe on one side, so that peculiar smell gas in the rotary drum is exhausted from the corrugated air pipe on the other side to be purified by the gas purification device, the emission reduction requirement is met, and the situation that the peculiar smell gas in the rotary drum overflows to pollute air and affect personnel health when the drum cover on the peripheral wall of the rotary drum is opened is avoided.

Description

Technical Field

[0001] This utility model relates to the field of leather processing technology, specifically to a pretreatment device for tanning leather using a vegetable tanning process. Background Technology

[0002] This invention relates to a pretreatment device for acid-soaked yak hides used in vegetable tanning, disclosed in Chinese patent document CN218521279U, which pertains to the field of hide processing technology. The device comprises a water collection tank, a washing tank, a drive mechanism, an opening and closing mechanism, and a limiting mechanism. The water collection tank includes a water tank, a rotating shaft, and a cover. This device drives a filter drum and a drum cover to rotate, allowing the hide to roll inside the filter drum. This ensures the hide is fully in contact with the acid solution. Furthermore, the rolling process reduces entanglement between hides, facilitating subsequent processing. After the acid solution in the water tank is emptied, centrifugal force causes excess acid to be thrown off the hide. During hide transfer, acid dripping onto the equipment and ground is prevented, maintaining hygiene and reducing the need for cleaning the equipment and floor.

[0003] However, in the above-mentioned schemes and existing technologies, the leather needs to be placed in a drum for acid tanning pretreatment during the whole vegetable tanning process. During the acid tanning process, there are odorous gases in the drum. When the drum cover on the drum wall is opened to take out the leather, the odorous gases in the drum overflow, polluting the air and affecting the health of personnel. This does not meet the emission reduction requirements and needs to be improved and optimized.

[0004] Therefore, this utility model proposes an acid-soaking pretreatment device for vegetable tanning of leather to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pretreatment device for tanning leather in the process of vegetable tanning, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pretreatment device for tanning leather using a vegetable tanning process, comprising:

[0007] The machine body has a rotating drum rotatably mounted on it. A drum cover is mounted on the peripheral wall of the drum. Connecting pipes are symmetrically connected to the back of the drum. The connecting pipes communicate with the inner wall of the drum and are equipped with valves.

[0008] The device has two corrugated air pipes. One corrugated air pipe is connected to the output end of the blower, and the other corrugated air pipe is connected to the gas purification device. The corrugated air pipes are connected to the connecting pipes through connecting components.

[0009] Preferably, the convex ring in the connecting assembly is fixedly disposed at the end of the connecting pipe, and an annular groove is formed on the peripheral wall of the convex ring. A connecting cylinder is sleeved on the convex ring, and a connecting ring is fixedly disposed on the inner wall of the connecting cylinder.

[0010] Preferably, the connecting ring is movably sleeved in the ring groove, positioning blocks are fixedly arranged at equal intervals on the inner wall of the connecting cylinder, an installation ring is fixedly arranged at the end of the corrugated air pipe, and a sealing gasket is fixedly arranged at the bottom end of the installation ring.

[0011] Preferably, the mounting ring is sleeved with the connecting cylinder, the sealing gasket is snapped with the convex ring, the mounting ring has equidistant grooves on its peripheral wall, the positioning block is inserted into the grooves, and the positioning block is snapped with the mounting ring.

[0012] Preferably, a lever is fixedly provided on the peripheral wall of the connecting cylinder, and a threaded hole is provided on the lever, with a knob bolt threaded into the threaded hole.

[0013] Preferably, a positioning post is fixedly provided at the end of the knob bolt, and a protrusion is fixedly provided on the bottom wall of the protrusion ring. A positioning hole is provided on the protrusion, and the positioning post is inserted into the positioning hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By engaging the mounting ring at the end of the corrugated air pipe with the connecting cylinder, the positioning block is inserted into the corresponding groove. After the sealing gasket at the bottom of the mounting ring is locked with the convex ring, the connecting cylinder is rotated to lock the positioning block with the mounting ring and fix the position of the connecting cylinder, thus completing the connection between the corrugated air pipe and the connecting pipe. When the blower operates, it blows air into the drum along one side of the corrugated air pipe, causing the odorous gas in the drum to be discharged from the other side of the corrugated air pipe and purified by the gas purification device, meeting the emission reduction requirements and preventing the odorous gas in the drum from overflowing and polluting the air when the drum cover on the drum wall is opened, thus affecting the health of personnel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connecting pipe structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the convex ring structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the connecting cylinder structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the mounting ring structure of this utility model.

[0021] In the diagram: 1. Machine body; 2. Drum; 3. Connecting pipe; 4. Valve; 5. Corrugated air pipe; 6. Convex ring; 7. Ring groove; 8. Connecting cylinder; 9. Connecting ring; 10. Positioning block; 11. Mounting ring; 12. Sealing gasket; 13. Slide groove; 14. Toggle block; 15. Threaded hole; 16. Knob bolt; 17. Positioning post; 18. Protrusion; 19. Positioning hole. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1-5 The present invention provides the following two preferred embodiments:

[0024] Example 1: A pretreatment device for tanning whole-vegetable leather, comprising: a machine body 1, on which a drum 2 is rotatably mounted, a drum cover is provided on the peripheral wall of the drum 2, and connecting pipes 3 are symmetrically connected to the back of the drum 2, the connecting pipes 3 communicating with the inner wall of the drum 2, and valves 4 are provided on the connecting pipes 3; two corrugated air pipes 5, one end of which is connected to the output end of a blower, and the other end of which is connected to a gas purification device, the corrugated air pipes 5 being connected to the connecting pipes 3 via a connecting assembly; a convex ring 6 in the connecting assembly is fixedly mounted on the end of the connecting pipe 3, and an opening is provided on the peripheral wall of the convex ring 6. The device includes an annular groove 7, a connecting cylinder 8 fitted onto the convex ring 6, and a connecting ring 9 fixedly mounted on the inner wall of the connecting cylinder 8. The connecting ring 9 is movably fitted into the annular groove 7. Positioning blocks 10 are fixedly mounted at equal intervals on the inner wall of the connecting cylinder 8. An installation ring 11 is fixedly mounted at the end of the corrugated air pipe 5, and a sealing gasket 12 is fixedly mounted at the bottom end of the installation ring 11. The installation ring 11 is fitted into the connecting cylinder 8, and the sealing gasket 12 is engaged with the convex ring 6. Sliding grooves 13 are equally spaced on the peripheral wall of the installation ring 11, and the positioning blocks 10 are inserted into the sliding grooves 13 and engaged with the installation ring 11.

[0025] During use, when the leather is processed through vegetable tanning, after the leather undergoes pre-treatment by pickling inside the drum 2, the drum 2 is driven to rotate so that the opening of the connecting pipe 3 faces upward. The position of the corrugated air pipe 5 is stretched and adjusted so that the mounting ring 11 at the end of the corrugated air pipe 5 is sleeved with the connecting cylinder 8. The connecting cylinder 8 is rotated so that the positioning block 10 is inserted into the corresponding groove 13 until the sealing gasket 12 at the bottom of the mounting ring 11 is tightly engaged with the convex ring 6. Then, the connecting cylinder 8 is rotated so that the positioning block 10 is engaged with the mounting ring 11 and the position of the connecting cylinder 8 is fixed, thus completing the connection between the corrugated air pipe 5 and the connecting pipe 3. The valve 4 on the connecting pipe 3 is opened, and one end of the corrugated air pipe 5 is connected to the output end of the blower. The blower blows air into the drum 2 so that the odorous gas inside the drum 2 is discharged from the other side of the corrugated air pipe 5. The gas purification device connected to the end of the corrugated air pipe 5 on this side works to purify the odorous gas, meeting the emission reduction requirements of the device and preventing the odorous gas inside the drum from overflowing and polluting the air when the drum cover on the drum wall is opened, thus affecting the health of personnel.

[0026] Example 2: Based on Example 1, a lever 14 is fixedly installed on the peripheral wall of the connecting cylinder 8. A threaded hole 15 is opened on the lever 14, and a knob bolt 16 is internally threaded into the threaded hole 15. A positioning post 17 is fixedly installed at the end of the knob bolt 16, and a protrusion 18 is fixedly installed on the bottom wall of the protruding ring 6. A positioning hole 19 is opened on the protrusion 18, and the positioning post 17 is inserted into the positioning hole 19.

[0027] In use, the sealing gasket 12 at the bottom of the mounting ring 11 is engaged with the convex ring 6. Then, the connecting cylinder 8 is rotated so that the positioning block 10 engages with the mounting ring 11 to fix the position of the mounting ring 11, so that the corrugated air pipe 5 and the connecting pipe 3 are stably connected. At this time, the toggle block 14 moves above the convex block 18 and the knob bolt 16 is threaded into the threaded hole 15 so that the positioning pin 17 is inserted into the positioning hole 19, thereby fixing the position of the connecting cylinder 8, ensuring the connection stability of the corrugated air pipe 5 and the connecting pipe 3, and facilitating the discharge of odorous gas in the drum 2.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for pickling leather in the vegetable tanning process, characterized in that: include: The machine body (1) has a rotating drum (2) rotatably mounted on it. A drum cover is mounted on the peripheral wall of the drum (2). A connecting pipe (3) is symmetrically connected to the back of the drum (2). The connecting pipe (3) communicates with the inner wall of the drum (2). A valve (4) is mounted on the connecting pipe (3). Corrugated air pipe (5), two corrugated air pipes (5) are provided, one end of the corrugated air pipe (5) is connected to the output end of the blower, and the other end of the corrugated air pipe (5) is connected to the gas purification device. The corrugated air pipe (5) is connected to the connecting pipe (3) through the connecting assembly.

2. The pretreatment equipment for tanning leather for all-vegetarian tanning according to claim 1, characterized in that: The convex ring (6) in the connecting assembly is fixedly installed at the end of the connecting pipe (3). A ring groove (7) is provided on the peripheral wall of the convex ring (6). A connecting cylinder (8) is sleeved on the convex ring (6). A connecting ring (9) is fixedly installed on the inner wall of the connecting cylinder (8).

3. The pretreatment equipment for tanning leather for all-vegetarian tanning according to claim 2, characterized in that: The connecting ring (9) is movably sleeved in the ring groove (7), and positioning blocks (10) are fixedly arranged at equal intervals on the inner wall of the connecting cylinder (8). An installation ring (11) is fixedly arranged at the end of the corrugated air pipe (5), and a sealing gasket (12) is fixedly arranged at the bottom end of the installation ring (11).

4. The pretreatment equipment for tanning leather for all-vegetarian tanning according to claim 3, characterized in that: The mounting ring (11) is sleeved with the connecting cylinder (8), the sealing gasket (12) is snapped with the convex ring (6), the mounting ring (11) has equidistant grooves (13) on its peripheral wall, the positioning block (10) is inserted into the groove (13), and the positioning block (10) is snapped with the mounting ring (11).

5. The pretreatment equipment for tanning leather for all-vegetarian tanning according to claim 2, characterized in that: A lever (14) is fixedly installed on the peripheral wall of the connecting cylinder (8). A threaded hole (15) is opened on the lever (14), and a knob bolt (16) is threadedly connected inside the threaded hole (15).

6. The pretreatment equipment for tanning leather for vegetable tanning according to claim 5, characterized in that: The end of the knob bolt (16) is fixedly provided with a positioning post (17), and the protrusion (18) is fixedly provided on the bottom wall of the protrusion ring (6). The protrusion (18) is provided with a positioning hole (19), and the positioning post (17) is inserted into the positioning hole (19).

Images