Leather treatment device for shoemaking

Abstract

According to the technical scheme, the leather treatment device for shoemaking is characterized by comprising a machine frame, a treatment box, a main tank body assembly, an auxiliary tank body assembly, a driving assembly and a buffering tank body assembly, the main tank body assembly, the auxiliary tank body assembly, the driving assembly and the buffering tank body assembly are all installed on the machine frame, and the main tank body assembly is connected with the auxiliary tank body assembly. The main tank body assembly and the auxiliary tank body assembly are connected with the driving assembly, the buffer tank body assembly is connected with the driving assembly, and the treatment box is connected with the buffer tank body assembly. Therefore, after the raw hide is soaked in the chrome tanning liquid, the chrome tanning liquid and the adjusting liquid are automatically and continuously mixed to form concocting liquid with different pH values, and the concocting liquid gradually enters the treatment box along with the change of the pH values.

Description

Technical Field

[0001] This utility model relates to a processing device, and more specifically, it relates to a leather processing device for shoemaking. Background Technology

[0002] Leather processing equipment for shoemaking is a key piece of equipment used in the shoemaking process for the chemical treatment (tanning) of leather raw materials. Its purpose is to improve the softness, durability, aesthetics, and functionality of leather to meet the requirements of footwear products. Leather tanning is the core step in leather processing, transforming animal hides (collagen fibers) into soft, durable, and resistant to decay through chemical treatment. A common softening method is chrome tanning, which involves first soaking the pre-treated raw hide in a chrome tanning solution, then adjusting the pH to 3.8–4.2 to promote the binding of chromium salts with collagen. However, in actual operation, it has been found that… The pH adjustment stage must be carried out slowly. That is, the adjusting solution needs to be continuously mixed with the chrome tanning liquor to form a modified solution with different pH values. Then, it is introduced into the raw hide soaking equipment in order of pH from low to high. Otherwise, it is easy to cause uneven softening of raw hide or excessive softness on the outside and hardness on the inside. Since the modified solution is corrosive, it is impossible to directly control the flow of the liquid using precision equipment. In the existing technology, it usually requires manual control by workers, which poses a great safety hazard. Therefore, a leather treatment device for shoemaking is needed. This device can automatically mix the chrome tanning liquor and the adjusting solution to form a modified solution with different pH values ​​after the raw hide is soaked in the chrome tanning liquor.

[0003] For the reasons mentioned above, the problem addressed in this application is how to automatically mix the chrome tanning liquor and the adjusting solution to form a conditioning solution with different pH values ​​after soaking raw hides in chrome tanning liquor. Utility Model Content

[0004] To address the shortcomings of existing technologies, a leather processing device for shoemaking is provided. This device can automatically mix the chrome tanning liquor and the adjusting liquid to form a conditioning solution with different pH values ​​after the raw hide has been soaked in chrome tanning liquor.

[0005] To achieve the above objectives, the following technical solution is provided: a leather processing device for shoemaking, comprising a frame, a processing box, a main tank assembly, a secondary tank assembly, a drive assembly, and a buffer tank assembly. The main tank assembly, the secondary tank assembly, the drive assembly, and the buffer tank assembly are all mounted on the frame. The main tank assembly is connected to the secondary tank assembly. Both the main tank assembly and the secondary tank assembly are connected to the drive assembly. The buffer tank assembly is connected to the drive assembly. The processing box is connected to the buffer tank assembly.

[0006] When there is liquid in the main tank assembly, the liquid in the secondary tank assembly cannot enter the buffer tank assembly.

[0007] In summary, the above technical solution has the following beneficial effects: the main tank assembly, as the core storage unit, contains chrome tanning liquor and is directly used for the initial treatment of leather, while the auxiliary tank assembly stores pH adjustment liquid and is linked to the main tank through connecting pipelines. Since the drive assembly is directly connected to the main tank assembly and the auxiliary tank assembly, it can control the liquid in the main tank assembly and the auxiliary tank assembly to enter the buffer tank assembly through the pump or air pressure system of the facility. The buffer tank assembly, as an intermediate transition container, receives the liquid from the main tank assembly or the auxiliary tank assembly and stabilizes the pressure through the drive assembly before transporting the liquid to the processing tank for leather treatment.

[0008] When the main tank assembly contains chrome tanning liquor, the passage between the auxiliary tank assembly and the buffer tank assembly is cut off. This allows the drive assembly to carry the chrome tanning liquor from the main tank assembly into the buffer tank assembly. After the liquid in the main tank assembly is exhausted, a small portion of the chrome tanning liquor remains in the buffer tank assembly, while the majority enters the processing tank for preliminary processing of the raw hides. At this time, the pH adjustment solution in the auxiliary tank assembly can gradually enter the buffer tank assembly. With the addition of the pH adjustment solution, the volume of liquid in the buffer tank assembly increases, allowing it to enter the processing tank. Furthermore, as the proportion of pH adjustment solution in the liquid in the buffer tank assembly gradually increases, the actual pH also gradually changes. Therefore, solutions with different pH values ​​gradually enter the processing tank, thus avoiding drastic changes within the processing tank. This ensures the phased and sequential processing of the liquids, preventing mixing, contamination, or reaction conflicts.

[0009] This invention achieves the gradual mixing of chrome tanning liquor and pH adjusting solution by setting up a main tank assembly, a secondary tank assembly, and a buffer tank assembly. This allows the chrome tanning liquor and adjusting solution to be automatically mixed continuously after the raw hide is soaked in the chrome tanning liquor to form a conditioning solution with different pH values, and the conditioning solution is allowed to gradually enter the processing tank as the pH changes. Attached Figure Description

[0010] Figure 1 A three-dimensional structural diagram of the frame in a leather processing device for shoemaking.

[0011] Figure 2 This is a three-dimensional structural diagram of the processing box in this utility model;

[0012] Figure 3 This is a cross-sectional view of the main tank assembly in this utility model;

[0013] Figure 4 This is a cross-sectional view of the auxiliary tank assembly in this utility model.

[0014] Reference numerals: 1. Frame; 2. Processing tank; 3. Main tank assembly; 4. Auxiliary tank assembly; 5. Drive assembly; 6. Buffer tank assembly;

[0015] 31. Main storage tank; 32. First main connecting pipe; 33. Second main connecting pipe; 34. Flexible sealing element; 35. Main sealing disc; 36. Main one-way ventilation mechanism;

[0016] 311. Vent hole; 351. Connector; 352. Through hole;

[0017] 361. Main elastic gasket; 362. Main connector;

[0018] 41. Secondary storage tank; 42. Secondary connecting pipe; 43. Secondary sealing plate; 44. Secondary one-way ventilation mechanism;

[0019] 411. Liquid inlet; 412. Slope;

[0020] 441. Secondary elastic gasket; 442. Secondary connector;

[0021] 51. Pump body; 52. First connecting pipe; 53. Second connecting pipe;

[0022] 61. Buffer storage tank; 62. Guide tube. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] Reference Figure 1-4 As shown, the leather processing device for shoemaking includes a frame 1, a processing box 2, a main tank assembly 3, a secondary tank assembly 4, a drive assembly 5, and a buffer tank assembly 6. The main tank assembly 3, the secondary tank assembly 4, the drive assembly 5, and the buffer tank assembly 6 are all mounted on the frame 1. The main tank assembly 3 is connected to the secondary tank assembly 4. The main tank assembly 3 and the secondary tank assembly 4 are both connected to the drive assembly 5. The buffer tank assembly 6 is connected to the drive assembly 5. The processing box 2 is connected to the buffer tank assembly 6.

[0025] When there is liquid in the main tank assembly 3, the liquid in the auxiliary tank assembly 4 cannot enter the buffer tank assembly 6.

[0026] The main tank assembly 3 serves as the core storage unit, containing chrome tanning solution for direct initial leather treatment. The auxiliary tank assembly 4 stores pH adjustment solution and is linked to the main tank via connecting pipelines. Since the drive assembly 5 is directly connected to the main tank assembly 3 and the auxiliary tank assembly 4, it can control the liquid in the main tank assembly 3 and the auxiliary tank assembly 4 to enter the buffer tank assembly 6 via a facility pump or air pressure system. The buffer tank assembly 6 serves as an intermediate transition container. After receiving the liquid from the main tank assembly 3 or the auxiliary tank assembly 4 and stabilizing the pressure, the drive assembly 5 delivers the liquid to the processing tank 2 for leather treatment.

[0027] When the main tank assembly 3 contains chrome tanning liquor, the passage between the auxiliary tank assembly 4 and the buffer tank assembly 6 is cut off. Thus, the drive assembly 5 can only carry the chrome tanning liquor from the main tank assembly 3 into the buffer tank assembly 6. After the liquid in the main tank assembly 3 is exhausted, a small portion of the chrome tanning liquor remains in the buffer tank assembly 6, while most of the chrome tanning liquor enters the processing tank 2 for preliminary processing of the raw hides. At this time, the pH adjustment solution in the auxiliary tank assembly 4 can gradually enter the buffer tank assembly 6. With the addition of the pH adjustment solution, on the one hand, the liquid volume in the buffer tank assembly 6 increases, thus allowing it to enter the processing tank 2. On the other hand, as the proportion of pH adjustment solution in the liquid in the buffer tank assembly 6 gradually increases, the actual pH will also gradually change. Therefore, solutions with different pH values ​​gradually enter the processing tank 2, thereby avoiding drastic changes within the processing tank 2. This ensures the phased and sequential processing of the liquids and avoids mixing, contamination, or reaction conflicts.

[0028] This invention achieves the gradual mixing of chrome tanning liquor and pH adjustment solution by setting up a main tank assembly 3, a secondary tank assembly 4 and a buffer tank assembly 6. This allows the chrome tanning liquor and pH adjustment solution to be automatically mixed continuously after the raw hide is soaked in the chrome tanning liquor to form a conditioning solution with different pH values, and the conditioning solution is allowed to gradually enter the treatment tank 2 as the pH changes.

[0029] Furthermore, the drive assembly 5 includes a pump body 51, a first connecting pipe 52 and a second connecting pipe 53. The first connecting pipe 52 is fixedly connected to the pump body 51 and communicates with the buffer tank assembly 6. The second connecting pipe 53 is fixedly connected to the pump body 51 and communicates with both the main tank assembly 3 and the auxiliary tank assembly 4.

[0030] As the driving core, the pump body 51 needs to be able to drive the liquid in the main tank assembly 3 and the auxiliary tank assembly 4 into the buffer tank assembly 6. Since the pH adjustment liquid itself will mix with the chrome tanning liquid, in order to save materials and avoid residue, the liquid in both the main tank assembly 3 and the auxiliary tank assembly 4 is transported to the pump body 51 through the second connecting pipe 53.

[0031] Furthermore, the buffer tank assembly 6 includes a buffer storage tank 61 and a guide pipe 62. The first connecting pipe 52 is fixedly connected to the buffer storage tank 61, and the guide pipe 62 is connected to the buffer storage tank 61 and the processing box 2, and extends into the interior of the processing box 2.

[0032] Furthermore, the main tank assembly 3 includes a main storage tank 31, a first main connecting pipe 32, a second main connecting pipe 33, an elastic sealing member 34, and a main sealing plate 35. The main storage tank 31 is also provided with a vent hole 311. The first main connecting pipe 32 is fixedly connected to the top of the main storage tank 31, and the other end is connected to the drive assembly 5. The second main connecting pipe 33 is fixedly connected to the main storage tank 31, and the other end is connected to the auxiliary tank assembly 4. The second main connecting pipe 33 is located close to the first main connecting pipe 32. The elastic sealing member 34 is fixedly connected to the main storage tank 31 and is used to block the second main connecting pipe 33. The vent hole 311 is located away from the first main connecting pipe 32. The main sealing plate 35 is slidably connected to the main storage tank 31. The elastic sealing member 34 is used to divide the space inside the main storage tank 31 to form a first main space for storing liquid and a second main space for containing gas. The first main connecting pipe 32 is connected to the first main space.

[0033] When the main sealing disc 35 comes into contact with the elastic sealing member 34, the elastic sealing member 34 deforms, and the second main connecting pipe 33 communicates with the second main space.

[0034] Furthermore, the main sealing plate 35 includes a connector 351, which is slidably connected to the main storage tank 31. The tip of the connector 351 is positioned toward the elastic sealing member 34. The connector 351 and the elastic sealing member 34 are positioned in the same vertical direction. The side of the connector 351 facing the main storage tank 31 is provided with a through hole 352, which communicates with the second main space.

[0035] As the connector 351 moves toward the elastic closure 34, the connector 351 is inserted between the second main connecting pipe 33 and the elastic closure 34, and the through hole 352 communicates with the second main connecting pipe 33.

[0036] Furthermore, the secondary tank assembly 4 includes a secondary storage tank 41, a secondary connecting pipe 42, and a secondary sealing disc 43. The second main connecting pipe 33 is fixedly connected to the top of the secondary storage tank 41, and the secondary connecting pipe 42 is fixedly connected to the secondary storage tank 41 and disposed away from the second main connecting pipe 33. The secondary connecting pipe 42 is connected to the drive assembly 5, and the secondary sealing disc 43 is slidably connected to the secondary storage tank 41 to form a first secondary space for storing liquid and a second secondary space for containing gas. The secondary connecting pipe 42 communicates with the first secondary space, and the second main connecting pipe 33 communicates with the second secondary space.

[0037] Furthermore, the bottom of the auxiliary storage tank 41 is provided with a liquid inlet 411 and a ramp 412 facing the liquid inlet 411.

[0038] By setting the main sealing disc 35 and the secondary sealing disc 43, the second main space and the second secondary space can be substantially connected. Therefore, inside the main storage tank 31, as gas enters the first main space, the main sealing disc 35 moves, and the volume of the first main space decreases. With the help of the drive assembly 5, the chromium tanning liquid can flow into the buffer tank assembly 6. Since the second main connecting pipe 33 is always closed by the elastic sealing member 34 during this process, it will not affect the secondary tank assembly 4. When the plug 351 is inserted between the second main connecting pipe 33 and the elastic sealing member 34, it will force the second main connecting pipe 33 and the elastic sealing member 34 to separate, and the main sealing disc 35 will move and no longer send the chromium tanning liquid out of the main storage tank 31. At this time, the gas will enter the secondary storage tank 41 through the second main connecting pipe 33. The internal principle of the secondary storage tank 41 is the same as that of the storage tank, so the pH adjustment liquid can be sent out. Throughout the process, only one type of liquid enters the drive assembly 5.

[0039] In addition, since chrome tanning liquor is highly corrosive, the cost of the first main connecting pipe 32 with strong corrosion resistance is high. Therefore, both the first main connecting pipe 32 and the auxiliary connecting pipe 42 are connected to the second connecting pipe 53. This also allows the pH adjustment solution to flush out the chrome tanning liquor remaining in the second connecting pipe 53, which can reduce costs.

[0040] Furthermore, the main tank assembly 3 includes a main one-way ventilation mechanism 36, which includes a main elastic gasket 361 and a main connector 362. The main elastic gasket 361 is used to close the vent 311, and both ends of the main elastic gasket 361 are fixedly connected to the main connector 362. The main connector 362 is fixedly connected to the main storage tank 31.

[0041] Air can enter the first main space through the vent 311 using devices such as air pumps. At this time, the flowing air will lift the main elastic gasket 361 and deform the middle towards the inside of the first main space. Therefore, except for the two ends fixed by the main connector 362, the edges of the main elastic gasket 361 are far away from the inner wall of the main storage tank 31, so that air can enter the first main space.

[0042] When air stops entering the first main space, the internal air will impact the main elastic gasket 361, but the main elastic gasket 361 is in contact with the inner wall of the main storage tank 31 and cannot deform, so the air cannot flow out, thereby preventing liquid backflow.

[0043] Furthermore, the secondary tank assembly 4 includes a secondary one-way ventilation mechanism 44, which includes a secondary elastic gasket 441 and a secondary connector 442. The secondary elastic gasket 441 is used to seal the second main connecting pipe 33. Both ends of the secondary elastic gasket 441 are fixedly connected to the secondary connector 442, and the secondary connector 442 is fixedly connected to the secondary storage tank 41.

[0044] The principle and structure of the auxiliary one-way ventilation mechanism 44 are the same as those of the one-way ventilation mechanism.

[0045] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A leather processing apparatus for shoemaking, characterized in that, The system includes a frame, a processing box, a main tank assembly, a secondary tank assembly, a drive assembly, and a buffer tank assembly. The main tank assembly, secondary tank assembly, drive assembly, and buffer tank assembly are all mounted on the frame. The main tank assembly is connected to the secondary tank assembly. The main tank assembly and the secondary tank assembly are both connected to the drive assembly. The buffer tank assembly is connected to the drive assembly. The processing box is connected to the buffer tank assembly. When there is liquid in the main tank assembly, the liquid in the secondary tank assembly cannot enter the buffer tank assembly.

2. The leather processing apparatus for shoemaking according to claim 1, characterized in that, The drive assembly includes a pump body, a first connecting pipe, and a second connecting pipe. The first connecting pipe is fixedly connected to the pump body and communicates with the buffer tank assembly. The second connecting pipe is fixedly connected to the pump body and communicates with both the main tank assembly and the auxiliary tank assembly.

3. The leather processing apparatus for shoemaking according to claim 2, characterized in that, The buffer tank assembly includes a buffer storage tank and a guide pipe. The first connecting pipe is fixedly connected to the buffer storage tank, the guide pipe is connected to the buffer storage tank, the guide pipe is connected to the processing box, and extends into the interior of the processing box.

4. The leather processing apparatus for shoemaking according to any one of claims 1-3, characterized in that, The main tank assembly includes a main storage tank, a first main connecting pipe, a second main connecting pipe, an elastic sealing member, and a main sealing disc. The main storage tank is also provided with a vent hole. The first main connecting pipe is fixedly connected to the top of the main storage tank, and the other end is connected to the drive assembly. The second main connecting pipe is fixedly connected to the main storage tank, and the other end is connected to the auxiliary tank assembly. The second main connecting pipe is located close to the first main connecting pipe. The elastic sealing member is fixedly connected to the main storage tank and is used to block the second main connecting pipe. The vent hole is located away from the first main connecting pipe. The main sealing disc is slidably connected to the main storage tank. The elastic sealing member is used to divide the space inside the main storage tank to form a first main space for storing liquid and a second main space for containing gas. The first main connecting pipe communicates with the first main space. When the main sealing disc comes into contact with the elastic closure, the elastic closure deforms, and the second main connecting pipe connects with the second main space.

5. The leather processing apparatus for shoemaking according to claim 4, characterized in that, The main sealing disc includes a connector that is slidably connected to the main storage tank. The tip of the connector is positioned toward the elastic sealing member. The connector and the elastic sealing member are positioned in the same vertical direction. The connector has a through hole on the side facing the main storage tank, and the through hole communicates with the second main space. As the connector moves toward the elastic closure, it is inserted between the second main connecting pipe and the elastic closure, and the through hole communicates with the second main connecting pipe.

6. The leather processing apparatus for shoemaking according to claim 5, characterized in that, The secondary tank assembly includes a secondary storage tank, a secondary connecting pipe, and a secondary sealing disc. The second main connecting pipe is fixedly connected to the top of the secondary storage tank. The secondary connecting pipe is fixedly connected to the secondary storage tank and is located away from the second main connecting pipe. The secondary connecting pipe is connected to a drive assembly. The secondary sealing disc is slidably connected to the secondary storage tank to form a first secondary space for storing liquid and a second secondary space for containing gas. The secondary connecting pipe communicates with the first secondary space, and the second main connecting pipe communicates with the second secondary space.

7. The leather processing apparatus for shoemaking according to claim 6, characterized in that, The bottom of the auxiliary storage tank is provided with a liquid inlet and a ramp facing the liquid inlet.

8. The leather processing apparatus for shoemaking according to claim 7, characterized in that, The main tank assembly includes a main one-way ventilation mechanism, which includes a main elastic gasket and a main connector. The main elastic gasket is used to seal the ventilation hole, and both ends of the main elastic gasket are fixedly connected to the main connector, which is fixedly connected to the main storage tank.

9. The leather processing apparatus for shoemaking according to claim 8, characterized in that, The auxiliary tank assembly includes an auxiliary one-way ventilation mechanism, which includes an auxiliary elastic gasket and an auxiliary connector. The auxiliary elastic gasket is used to seal the second main connecting pipe, and both ends of the auxiliary elastic gasket are fixedly connected to the auxiliary connector, which is fixedly connected to the auxiliary storage tank.

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