Leather dyeing machine

Abstract

The utility model relates to the technical field of leather dyeing, in particular to a leather dyeing machine which comprises a machine frame, a supporting column installed at the bottom of the machine frame, a rotary drum installed in the machine frame and capable of rotating and a driving mechanism installed on one side of the rotary drum and used for driving the rotary drum to rotate. The four-way valve is connected with the liquid inlet pipeline through a first rotary joint, a support I is arranged on the top of the rack, a feeding concentration control bin is arranged on the support I, a thick liquid pipe and a thin liquid pipe are arranged between the feeding concentration control bin and the four-way valve, a central pipe is arranged in the rotary drum, one side of the central pipe is connected with the liquid inlet pipeline through a second rotary joint, and the other side of the central pipe is connected with the liquid inlet pipeline through a third rotary joint. A four-claw shaft is arranged on the side, away from the liquid inlet pipeline, of the rotary drum, the side, close to the four-claw shaft, of the central pipe is connected with the rotary drum through a third rotary connector, a plurality of liquid outlet holes are evenly distributed in the circumference of the central pipe, and the problem that leather is dyed unevenly after being dyed can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of leather dyeing, in particular to a leather dyeing machine. Background Art

[0002] The leather that needs to be coated does not have very high requirements for dyeing, but the requirements for suede, water-dyed leather, and light-colored Nappa leather are very high, especially light-colored suede.

[0003] In the case of warm-bath drum dyeing, there will be color differences between single leathers. The most serious one is the difference in hue, and the less serious one is the difference in light and dark. In a piece of leather, the light and dark colors of different parts such as the buttocks, hems, and crotch are different. After hanging to dry, light color marks or concentrated color are likely to appear, which seriously affects the quality of leather products.

[0004] Traditional leather dyeing machines usually reduce uneven dyeing by increasing the rotation speed of the drum to improve the chance of leather contact with the dye solution. However, this will cause the leather to be subjected to excessive physical force on the drum, which can easily cause the leather to kink. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a leather dyeing machine, which can effectively solve the problem of uneven dyeing of leather after dyeing.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a leather dyeing machine, comprising a frame, a support mounted at the bottom of the frame, a rotatable drum mounted inside the frame, and a driving mechanism mounted on one side of the drum for driving the drum to rotate, wherein a liquid inlet pipe and a four-way valve are provided on one side of the drum, the four-way valve and the liquid inlet pipe are connected via a rotary joint 1, a bracket 1 is provided on the top of the frame, a feed concentration control chamber is provided on the bracket 1, and a thick liquid pipe and a thin liquid pipe are provided between the feed concentration control chamber and the four-way valve, a central pipe is provided in the drum, and one side of the central pipe is connected to the liquid inlet pipe via a rotary joint 2;

[0007] The feed concentration control bin includes a bin body, a high-concentration dye liquid tank and a low-concentration dye liquid tank installed in the bin body, and two dye liquid feeding pipes for respectively feeding liquid into the high-concentration dye liquid tank and the low-concentration dye liquid tank, wherein the thick liquid pipe is connected to the high-concentration dye liquid tank, and the thin liquid pipe is connected to the low-concentration dye liquid tank;

[0008] A four-claw shaft is provided on the side of the drum away from the liquid inlet pipe, and the four-claw shaft is fixedly installed on the inner wall of the drum and connected to the belt shaft provided on the outside of the drum;

[0009] The side of the central tube close to the four-claw shaft is connected to the four-claw shaft through a rotary joint three, and a plurality of liquid outlet holes are evenly distributed on the circumference of the central tube.

[0010] In a preferred example, the present invention can be further configured as follows: a liquid collecting tank is provided at the bottom of the frame, a filter is provided on one side of the liquid collecting tank, a return pipe and a discharge pipe are provided on the filter, the filter is connected to the four-way valve through the return pipe and a liquid pump is provided on the return pipe, and the filtered dye liquid particles are discharged through the discharge pipe to prevent internal blockage, while ensuring the quality of leather dyeing.

[0011] In a preferred example, the present invention can be further configured as follows: the driving mechanism includes a bracket II mounted on the frame and a driving motor mounted on the bracket II, a belt pulley is provided on the output shaft of the driving motor, a spacer is provided on the belt shaft, a V-belt is provided on the belt pulley, one end of the V-belt is sleeved on the belt pulley, and the other end of the V-belt is sleeved on the belt shaft located on the side of the spacer close to the drum.

[0012] In a preferred example, the present invention can be further configured as follows: a heater is provided on the outer wall of the warehouse body for heating the high-concentration dye liquid tank and the low-concentration dye liquid tank; two temperature detectors are provided on one side of the heater, and the two temperature detectors are used to monitor the internal temperature of the high-concentration dye liquid tank and the low-concentration dye liquid tank respectively.

[0013] In a preferred example, the present invention can be further configured as follows: a clear liquid feed pipe is provided on the top of the warehouse body, and the clear liquid feed pipe is connected to the high-concentration dye liquid tank and the low-concentration dye liquid tank respectively through two infusion pipes, and both of the infusion pipes are provided with control valves, which can adjust the dye concentration inside the high-concentration dye liquid tank and the low-concentration dye liquid tank in a timely manner at a later stage.

[0014] In a preferred example, the present invention can be further configured as follows: a control panel is provided on the warehouse body, and two liquid concentration detectors are provided in the warehouse body for detecting the high-concentration dye liquid tank and the low-concentration dye liquid tank respectively, and the liquid concentration detectors are electrically connected to the control panel, and the internal concentrations of the high-concentration dye liquid tank and the low-concentration dye liquid tank are displayed through the control panel.

[0015] In a preferred example, the present invention can be further configured as follows: a glass window is provided on the outer wall of the bin body, and an operator can observe the residual dye liquid inside the high-concentration dye liquid tank and the low-concentration dye liquid tank through the glass window.

[0016] In a preferred example, the present invention can be further configured such that the tank body material used for the high-concentration dye liquid tank and the low-concentration dye liquid tank is a heat-conducting material.

[0017] In a preferred example, the present invention can be further configured as follows: wheels are provided on both sides of the drum, wheel grooves are opened at positions corresponding to the positions of the wheels on the frame, and the wheels can be rotatably arranged in the wheel grooves. The wheel grooves can increase the stability of the drum in rotating on the frame.

[0018] In summary, the present invention includes at least one of the following beneficial technical effects.

[0019] 1. The utility model adopts a feed concentration control chamber. In the initial stage of leather dyeing, a low-concentration dyeing tank is used to sequentially enter the central tube through a thin liquid tube and a four-way valve. This can prevent the occurrence of a blooming phenomenon in the initial stage of leather dyeing, which causes a part of the leather to have a darker color due to absorption of an excessively high concentration of dye solution and cannot be diluted. After the leather is initially dyed, it can be switched to a high-concentration dyeing tank for feeding, so that the dyeing is uniform.

[0020] 2. The utility model adopts a liquid pump to achieve the purpose of dye liquid circulation. The dye liquid is filtered through a filter to remove large particles in the dye liquid. The filtered dye liquid enters the reflux pipe and enters the central pipe through a four-way valve under the action of the liquid pump, allowing the dye liquid to flow from the inside to the outside. Therefore, even if a lower speed is used, uneven dyeing will not occur.

[0021] 3. A heater is provided on the outer wall of the silo for heating the high-concentration dye tank and the low-concentration dye tank. Two temperature detectors are provided on one side of the heater, which are controlled by the control panel to adjust the optimal dyeing temperature of the high-concentration dye tank and the low-concentration dye tank.

[0022] 4. There are running wheels on both sides of the drum. A wheel groove is opened at the position corresponding to the position of the frame and the running wheel. The running wheel can be rotatably arranged in the wheel groove. The wheel groove setting can increase the stability of the drum rotating on the frame and prevent the drum from shaking during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0025] Figure 2 This is a schematic diagram of the structural installation of the drum, impeller and center tube in the utility model.

[0026] Figure 3 It is a side view of the present utility model.

[0027] Figure 4 This is a schematic diagram of the structural installation of the belt pulley, lower belt pulley, belt shaft and spacer in the utility model.

[0028] Figure 5 This is a schematic diagram of the structural installation of the wheel groove in the utility model.

[0029] Figure 6 This is a schematic diagram of the structural installation of the liquid outlet on the central tube, rotary joint 2, rotary joint 3 and four-claw shaft in the utility model.

[0030] Figure 7 This is a schematic diagram of the internal structure of the feed concentration control bin in the utility model.

[0031] In the figure, 1, frame; 2, support; 3, drum; 41, bracket II; 42, drive motor; 43, pulley; 431, V-belt; 5, liquid inlet pipe; 6, four-way valve; 7, rotary joint 1; 8, bracket I; 9, feed concentration control chamber; 91, chamber body; 92, high-concentration dye liquid tank; 93, low-concentration dye liquid tank; 94, dye liquid feed pipe; 10. Thick liquid tube; 11. Thin liquid tube; 12. Center tube; 121. Liquid outlet; 13. Rotary joint 2; 14. Four-claw shaft; 15. Belt shaft; 151. Partition plate; 16. Rotary joint 3; 17. Liquid collecting tank; 18. Filter; 181. Reflux pipe; 1811. Liquid pump; 182. Discharge pipe; 19. Heater; 20. Temperature detector; 21. Clear liquid feed pipe; 22. Infusion tube; 23. Control panel; 24. Liquid concentration detector; 25. Glass window; 26. Rotor; 27. Wheel groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0033] See also Figure 1-2 and Figure 6-7 The leather dyeing machine described in the present invention includes a frame 1, a support 2 installed at the bottom of the frame 1, a rotatable drum 3 installed inside the frame 1, and a driving mechanism installed on one side of the drum 3 for driving the drum 3 to rotate. A liquid inlet pipe 5 and a four-way valve 6 are provided on one side of the drum 3. The four-way valve 6 is connected to the liquid inlet pipe 5 through a rotary joint 7. A bracket Ⅰ 8 is provided on the top of the frame 1. A feed concentration control chamber 9 is provided on the bracket Ⅰ 8. A thick liquid pipe 10 and a thin liquid pipe 11 are provided between the feed concentration control chamber 9 and the four-way valve 6. A central pipe 12 is provided in the drum 3. One side of the central pipe 12 is connected to the liquid inlet pipe 5 through a rotary joint 2 13.

[0034] The feed concentration control bin 9 comprises a bin body 91, a high-concentration dye solution tank 92 and a low-concentration dye solution tank 93 installed in the bin body 91, and two dye feeding pipes 94 for feeding the high-concentration dye solution tank 92 and the low-concentration dye solution tank 93 respectively, the thick liquid pipe 10 is connected with the high-concentration dye solution tank 92, and the thin liquid pipe 11 is connected with the low-concentration dye solution tank 93;

[0035] The drum 3 is provided with a four-jaw shaft 14 away from the liquid inlet pipe 5, and the four-jaw shaft 14 is fixedly installed on the inner wall of the drum 3 and connected with a belt shaft 15 arranged outside the drum 3.

[0036] The center pipe 12 is connected with the four-jaw shaft 14 through a rotary joint three 16 on the side close to the four-jaw shaft 14, and a plurality of liquid outlet holes 121 are uniformly distributed on the circumference of the center pipe 12.

[0037] In the initial stage of leather dyeing, the low-concentration dyeing tank is sequentially fed into the center pipe 12 through the thin liquid pipe 11 and the four-way valve 6, which can prevent the occurrence of dyeing phenomenon in the initial stage of leather dyeing, resulting in the problem that a part of the leather is too dark due to the absorption of high-concentration dyeing solution and cannot be diluted, and after the preliminary dyeing of the leather is completed, the high-concentration dyeing tank can be replaced for feeding, so that the leather is dyed uniformly and consistently.

[0038] Please refer to Figure 1 and Figure 3 In a preferred example, the utility model can be further configured that the rack 1 is provided with a liquid collecting tank 17, the liquid collecting tank 17 is provided with a filter 18 on one side, the filter 18 is provided with a backflow pipe 181 and a discharge pipe 182, the filter 18 is connected with the four-way valve 6 through the backflow pipe 181, the backflow pipe 181 is provided with a liquid pump 1811, and the filtered dyeing particles are discharged through the discharge pipe 182 to prevent internal blockage, and the quality of leather dyeing can be ensured.

[0039] Please refer to Figure 1 and Figure 4 In a preferred example, the utility model can be further configured that the driving mechanism comprises a support II 41 installed on the rack 1 and a driving motor 42 installed on the support II 41, the output shaft of the driving motor 42 is provided with a belt disc 43, the belt shaft 15 is provided with a partition disc 151, the belt disc 43 is provided with a triangular belt 431, one end of the triangular belt 431 is sleeved on the belt disc 43, and the other end of the triangular belt 431 is sleeved on the belt shaft 15 located on the side close to the drum 3 of the partition disc 151.

[0040] Please refer to Figure 3In a preferred example, the present invention can be further configured as follows: a heater 19 for heating the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93 is provided on the outer wall of the warehouse body 91, and two temperature detectors 20 are provided on one side of the heater 19. The two temperature detectors 20 are used to monitor the internal temperature of the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93 respectively.

[0041] See also Figure 7 In a preferred example, the present invention can be further configured as follows: a clear liquid feed port 21 is provided on the top of the bin body 91, and the clear liquid feed port 21 is connected to the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93 respectively through two infusion pipes 22, and both infusion pipes 22 are provided with control valves, which can adjust the dye concentration inside the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93 in a timely manner in the later stage.

[0042] In a preferred example, the present invention can be further configured as follows: a control panel 23 is provided on the tank body 91; two liquid concentration detectors 24 are provided in the tank body 91 for detecting the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93, respectively; and the liquid concentration detectors 24 are electrically connected to the control panel 23, and the internal concentrations of the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93 are displayed through the control panel 23.

[0043] In a preferred example, the present invention can be further configured as follows: a glass window 25 is provided on the outer wall of the bin body 91 , and an operator can observe the residual amount of dye in the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93 through the glass window 25 .

[0044] In a preferred example, the present invention can be further configured such that the tank body material used for the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93 is a heat-conducting material.

[0045] See also Figure 5 In a preferred example, the present invention can be further configured as follows: a rotating wheel 26 is provided on both sides of the rotating drum 3, and a wheel groove 27 is opened at the position corresponding to the position of the rotating wheel 26 on the frame 1. The rotating wheel 26 can be rotatably arranged in the wheel groove 27. The setting of the wheel groove 27 can increase the stability of the rotating drum 3 on the frame 1.

[0046] The implementation principle of this embodiment is as follows: first, the leather to be dyed is placed in the drum 3, and the driving mechanism is started at this time. The driving motor 42 drives the belt shaft 15 to rotate through the V-belt 431. Since the belt shaft 15 is connected to the inner wall of the drum 3 through the four-claw shaft 14, when the belt shaft 15 rotates, the drum 3 rotates with the rotation of the belt shaft 15. In this process, since a rotating wheel 26 is added to each side of the drum 3, and the rotating wheel 26 is rotatably arranged on the rotating groove adapted thereto on the frame 1, the stability of the drum 3 during rotation can be improved, the shaking phenomenon of the drum 3 during rotation is avoided, the stability of the drum 3 during rotation is increased, and the leather dyeing efficiency is improved to a certain extent. Color uniformity, in addition, in the initial stage of leather dyeing, a low-concentration dyeing tank is used to sequentially pass through the thin liquid tube 11 and the four-way valve 6 into the central tube 12, which can prevent the occurrence of a blurring phenomenon in the initial stage of leather dyeing, resulting in a part of the leather being too dark in color due to absorption of too high a concentration of dye liquid and unable to be diluted. After the leather is initially dyed, it can be switched to a high-concentration dyeing tank for feeding, so that its dyeing is uniform and consistent. Two liquid concentration detectors 24 are provided in the warehouse 91 for detecting the high-concentration dye tank 92 and the low-concentration dye tank 93 respectively, and the liquid concentration detector 24 is electrically connected to the control panel 23, and the control panel 23 displays the high-concentration dye tank 92 and the low-concentration dye tank 93. The internal concentration of the dye liquid tank 93 is adjusted. If the internal dye concentration of the high-concentration dye liquid tank 92 or the low-concentration dye liquid tank 93 is found to be inconsistent with the specified requirements during the dyeing process, the internal dye liquid concentration can be adjusted through the dye liquid feeding pipe 94 and the clear liquid feeding pipe respectively. The dye liquid feeding pipe 94 feeds high-concentration dye liquid raw materials, while the clear liquid feeding pipe feeds water or low-concentration dye liquid raw materials. During the dye liquid addition process, different dye liquid temperatures will have an important impact on the dyeing of the leather. Therefore, the outer wall of the warehouse body 91 in the present device is provided with a heater 19 for heating the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93. Two temperature detectors 20 are provided on one side of the heater 19. The temperature detector 20 is used to monitor the internal temperature of the high-concentration dye liquid tank 92 and the low-concentration dye liquid tank 93 respectively, so that the temperature of the added dye liquid is within the specified requirements. After a round of dyeing is completed, the dye liquid discharged after dyeing can be recycled into the liquid collection box 17, and the dye liquid is filtered through the filter 18 to remove large particles in the dye liquid. The filtered dye liquid enters the reflux pipe 181 and enters the central pipe 12 through the four-way valve 6 under the action of the liquid pump 1811. The dye liquid of the entire device eventually enters the central pipe 12, and the central pipe 12 is provided with a liquid outlet 121, which can allow the dye liquid to flow from the inside to the outside. Therefore, even if a lower speed is used, uneven dyeing will not occur.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to be a further limitation of the present invention. All equivalent changes made using the contents of the present invention specification and drawings are within the scope of protection of the present invention.

Claims

1. A leather dyeing machine, comprising a frame (1), a support (2) mounted at the bottom of the frame (1), a rotatable drum (3) mounted inside the frame (1), and a driving mechanism mounted on one side of the drum (3) for driving the drum (3) to rotate, characterized in that: A liquid inlet pipe (5) and a four-way valve (6) are provided on one side of the rotary drum (3), and the four-way valve (6) is connected to the liquid inlet pipe (5) via a rotary joint (7). A bracket I (8) is provided on the top of the frame (1), and a feed concentration control chamber (9) is provided on the bracket I (8). A thick liquid pipe (10) and a thin liquid pipe (11) are provided between the feed concentration control chamber (9) and the four-way valve (6). A central pipe (12) is provided in the rotary drum (3), and one side of the central pipe (12) is connected to the liquid inlet pipe (5) via a rotary joint (13). The feed concentration control chamber (9) comprises a chamber body (91), a high-concentration dye liquid tank (92) and a low-concentration dye liquid tank (93) installed in the chamber body (91), and two dye liquid feeding pipes (94) for feeding liquid into the high-concentration dye liquid tank (92) and the low-concentration dye liquid tank (93), respectively; the thick liquid pipe (10) is connected to the high-concentration dye liquid tank (92), and the thin liquid pipe (11) is connected to the low-concentration dye liquid tank (93); A four-claw shaft (14) is provided on the side of the rotating drum (3) away from the liquid inlet pipe (5), and the four-claw shaft (14) is fixedly mounted on the inner wall of the rotating drum (3) and connected to a belt shaft (15) provided on the outside of the rotating drum (3); The side of the central tube (12) close to the four-claw shaft (14) is connected to the four-claw shaft (14) through a rotary joint (16), and a plurality of liquid outlet holes (121) are evenly distributed on the circumference of the central tube (12).

2. A leather dyeing machine according to claim 1, characterized in that, A liquid collecting tank (17) is provided at the bottom of the frame (1), a filter (18) is provided on one side of the liquid collecting tank (17), a return pipe (181) and a discharge pipe (182) are provided on the filter (18), the filter (18) is connected to the four-way valve (6) via the return pipe (181), and a liquid pump (1811) is provided on the return pipe (181).

3. A leather dyeing machine according to claim 1, characterized in that, The driving mechanism comprises a bracket II (41) mounted on the frame (1) and a driving motor (42) mounted on the bracket II (41), a belt pulley (43) being provided on the output shaft of the driving motor (42), a spacer (151) being provided on the belt shaft (15), a V-belt (431) being provided on the belt pulley (43), one end of the V-belt (431) being sleeved on the belt pulley (43), and the other end of the V-belt (431) being sleeved on the belt shaft (15) located on a side of the spacer (151) close to the drum (3).

4. A leather dyeing machine according to claim 1, characterized in that, A heater (19) is provided on the outer wall of the bin body (91) for heating the high-concentration dye liquid tank (92) and the low-concentration dye liquid tank (93). Two temperature detectors (20) are provided on one side of the heater (19). The two temperature detectors (20) are used to monitor the internal temperature of the high-concentration dye liquid tank (92) and the low-concentration dye liquid tank (93), respectively.

5. The leather dyeing machine according to claim 1, characterized in that: A clear liquid feed pipe (21) is provided on the top of the bin body (91), and the clear liquid feed pipe (21) is connected to the high-concentration dye liquid tank (92) and the low-concentration dye liquid tank (93) respectively through two liquid infusion pipes (22), and both of the liquid infusion pipes (22) are provided with control valves.

6. A leather dyeing machine according to claim 5, characterized in that: A control panel (23) is provided on the warehouse body (91), and two liquid concentration detectors (24) are provided in the warehouse body (91) for detecting the high-concentration dye liquid tank (92) and the low-concentration dye liquid tank (93), respectively. The liquid concentration detectors (24) are electrically connected to the control panel (23).

7. The leather dyeing machine according to claim 1, characterized in that: The outer wall of the warehouse body (91) is provided with a glass window (25).

8. The leather dyeing machine according to claim 4, characterized in that: The tank body material used for the high-concentration dye liquid tank (92) and the low-concentration dye liquid tank (93) is a heat-conducting material.

9. The leather dyeing machine according to claim 1, characterized in that: Rotating wheels (26) are provided on both sides of the rotating drum (3), and wheel grooves (27) are provided at positions of the frame (1) corresponding to the rotating wheels (26), and the rotating wheels (26) are rotatably arranged in the wheel grooves (27).

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