PPH overload drum for leather dyeing processing
By using an overload drum made of PPH material and with an eccentric baffle, the problems of easy corrosion, wear and high chemical consumption of traditional drums have been solved, achieving efficient leather dyeing processing and improving service life and chemical absorption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional wooden drums are prone to corrosion and wear, have poor material suction, and are difficult to clean, affecting leather quality and service life; traditional baffle distribution results in low loading capacity and high chemical consumption.
The overload drum, made of PPH material, combined with eccentrically set baffles and honeycomb grid layers, uses high-drop impact to improve the speed and efficiency of chemical absorption, and reduces energy consumption through low-speed rotation.
This improved the service life of the drum and the chemical absorption effect, reduced dye consumption and energy consumption, and ensured leather quality and processing efficiency.
Smart Images
Figure CN224062794U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to leather processing equipment technical field, especially a kind of PPH overload rotary drum suitable for leather dye processing. BACKGROUND
[0002] In the production and processing of leather, dyeing is a common process, and drum dyeing is the most widely used method. The specific operation of drum dyeing is to put leather into a rotary drum and add dye to the rotary drum. Through the rotary motion of the rotary drum, the leather and the dye are fully stirred and mixed, so that the dye uniformly penetrates into the leather, and the dyeing process is finally completed. At the same time, the leather is continuously rolled, squeezed and rubbed inside through the rotation of the rotary drum, which promotes the gradual relaxation of the fibers and achieves the effect of softening the leather. Softening treatment not only improves the softness of the leather, but also enhances its hand feeling and texture, which is an indispensable link in leather processing. Traditional rotary drums are generally made of wood, which is prone to corrosion and cracking due to moisture, and will wear out after long-term use, resulting in a short service life. At the same time, wood materials are easy to absorb dye and chemical agents, which not only increases the processing cost, but also is difficult to clean thoroughly, easy to breed bacteria or mold, affects the quality of leather, and also needs regular maintenance and repair.
[0003] During the softening process, the rotary drum needs to use baffles to lift the leather from the liquid and throw it down when it approaches the highest point, falling into the liquid or leather at a lower position in the rotary drum, thereby producing a certain mechanical action. The traditional rotary drum baffle distribution structure is as shown in Figure 1 The baffles are evenly distributed on the inner wall of the drum cylinder, which results in a low loading capacity of the rotary drum, otherwise it cannot effectively beat the leather, which ultimately affects the absorption speed and absorption effect of the dye, thereby increasing the cost of dye. UTILITY MODEL CONTENTS
[0004] The utility model discloses a PPH overload rotary drum for leather dyeing processing, which is made of PPH material, can reduce the consumption of chemicals and reduce corrosion, and improve the service life. The eccentrically arranged baffles can lift the leather to a high place and beat it with a high drop, improving the action intensity.
[0005] The specific technical solutions are as follows:
[0006] The utility model provides a kind of PPH overload rotary drum for leather dyeing processing, including cylindrical drum cylinder, drum cover is equipped respectively at the both ends of the drum cylinder, and mounting support for being connected with shaft is equipped respectively on the outer wall of the drum cover;The inner cavity of the drum cylinder is equipped with conical screen at one end, and the converging end and flared end of the conical screen are fixedly connected with the inner wall of drum cover and the inner wall of drum cylinder respectively;Four baffles are evenly distributed and are equipped on the inner wall of the drum cylinder, and the both ends of the baffle are fixedly connected with the both ends of drum cover, and the corner of the baffle is inclined and is fixedly connected with the surface of conical screen near one end of conical screen, and the baffle is inclined and is eccentric to the center of drum cylinder, and the inclined direction of the baffle is consistent with the direction of rotation of drum cylinder, and makes it between adjacent two baffles mutually perpendicular.
[0007] Further, the drum cylinder, drum cover and baffle are made of PPH material.
[0008] Further, the inclination angle between the baffle and the diameter of the drum cylinder is 30 °.
[0009] Further, the baffle includes a side plate and a honeycomb lattice layer, and the honeycomb lattice layer is arranged between the two side plates;A groove is formed in the length direction of the end face of the baffle away from the inner wall of the drum cylinder, and a PPH reinforcing rib plate is embedded in the groove, and the end face of the PPH reinforcing rib plate is flush with the end face of the baffle.
[0010] Further, heat exchanger assemblies are symmetrically arranged on the inner walls of the both sides of the drum cylinder, one end of each of the two heat exchanger assemblies extends to one of the drum covers and is connected with a steam passage on the inner wall of the drum cover, and a steam chamber is arranged in the center of the inner wall of the drum cover, the steam chamber is in communication with a steam shaft penetrating through the center of the drum cover, and the steam chamber is in communication with the two heat exchanger assemblies through the two steam passages on the both sides.
[0011] Further, a drum opening is formed in the side wall of the drum cylinder, and the drum opening is closed by a drum door.
[0012] Further, a valve interface is arranged on the end of the side wall of the drum cylinder close to the conical screen.
[0013] The beneficial effects of the utility model are as follows:
[0014] (1) In the utility model, the rotary drum is made of PPH, which can prevent the dye from being absorbed by the drum body, save the dye, and also has the effect of preventing corrosion, and prolong the service life of the rotary drum.
[0015] (2) The baffle is arranged in an inclined mode to form a V-shaped groove between the baffle and the drum wall, and when rotating, the baffle can lift the leather and the bath liquid together to the top end of the rotating drum, and then the leather slides down and hits on the lower baffle, so that the high-falling impact forms a strong mechanical action, improves the absorption speed and absorption effect of the chemical material, and does not produce pulling when turning the leather, avoids tearing and loose surface phenomenon, does not cause damage to the leather, and ensures the leather processing quality.
[0016] (3) Compared with the traditional rotating drum, the overload rotating drum can adopt a smaller liquid ratio, and a small amount of chemical material can achieve the same concentration, thereby achieving the effect of saving chemical material; meanwhile, the overload rotating drum has a larger loading capacity, improves the leather processing efficiency; and the mechanical action of the overload rotating drum comes from the high-falling impact, so that a low-power motor can be used to drive low-speed rotation, thereby achieving the effect of reducing energy consumption. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a structural schematic view of a traditional rotating drum.
[0018] Figure 2 It is a front structure schematic view of the overload rotating drum of the utility model.
[0019] Figure 3 It is a back structure schematic view of the overload rotating drum of the utility model.
[0020] Figure 4 It is a front sectional view of the overload rotating drum of the utility model.
[0021] Figure 5 It is a back sectional view of the overload rotating drum of the utility model.
[0022] Figure 6 It is a side sectional view of the overload rotating drum of the utility model.
[0023] Figure 7 It is a partial sectional view of the overload rotating drum of the utility model.
[0024] Figure 8 It is a front view of the baffle of the utility model.
[0025] Figure 9 It is an end surface structure schematic view of the baffle of the utility model.
[0026] Figure 10 It is a sectional view of the baffle of the utility model.
[0027] Figure 11 It is Figure 10 A-A sectional view.
[0028] Explanation of reference signs: drum cylinder 1, drum opening 101, valve interface 102, heat exchanger assembly 103, steam channel 104, steam chamber 105, drum cover 2, mounting bracket 3, conical screen 4, baffle 5, side plate 51, honeycomb lattice layer 52, PPH reinforcing rib plate 53. DETAILED DESCRIPTION
[0029] In order to make the technical scheme of the utility model more clear and explicit, the utility model will be further described below in combination with the drawings, and any scheme derived by equivalent replacement and conventional reasoning of the technical features of the technical scheme of the utility model falls within the protection scope of the utility model. The fixed connection and fixed setting mentioned in the utility model are general connection modes in the mechanical field, and welding, bolt and nut connection and screw connection are all available.
[0030] In the description of the utility model creation, it needs to be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model creation and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0031] Please refer to the accompanying drawings Figures 2-11 The embodiment provides a PPH overload rotary drum for leather dyeing processing, the overload rotary drum shell is made of PPH material which is corrosion resistant and wear resistant, the overload rotary drum comprises a drum cylinder 1 which is cylindrical, drum covers 2 are arranged at two ends of the drum cylinder 1 respectively, mounting brackets 3 for connecting with shafts are arranged on outer walls of the drum covers 2 respectively, and one of the shafts is driven by a motor to drive the overload rotary drum to rotate. A conical screen 4 is arranged at one end of an inner cavity of the drum cylinder 1, and a converging end and a flared end of the conical screen 4 are fixedly connected with inner walls of the drum covers 2 and an inner wall of the drum cylinder 1 respectively; four baffle plates 5 are uniformly distributed on the inner wall of the drum cylinder 1, the baffle plates 5 are fixedly connected with the drum covers 2 at two ends respectively, one end corner of the baffle plates 5 close to the conical screen 4 is arranged in an inclined mode and is fixedly connected with a surface of the conical screen 4, the baffle plates 5 are arranged in an inclined mode and are eccentric to an axis of the drum cylinder 1, an inclination angle between the baffle plates 5 and the drum cylinder 1 is 30°, the inclination directions of the baffle plates 5 are consistent with a rotation direction of the drum cylinder 1, adjacent two baffle plates 5 are perpendicular to each other, and opposite two baffle plates 5 are arranged in parallel.
[0032] In the embodiment, the baffle 5 comprises side plates 51 and a honeycomb lattice layer 52, the honeycomb lattice layer 52 is arranged between the two side plates 51; a groove is formed on the end face of the baffle 5 away from the inner wall of the drum cylinder 1 along the length direction of the baffle 5, and a PPH reinforcing rib plate 53 is arranged in the groove, the end face of the PPH reinforcing rib plate 53 is flush with the end face of the baffle 5, and the skin is in contact with the PPH reinforcing rib plate 53 during the sliding process, so that the problems of pulling, wearing and the like of the skin can be avoided.
[0033] In the embodiment, heat exchanger assemblies 103 are symmetrically arranged on the inner walls of the two sides of the drum cylinder 1, one end of each of the two heat exchanger assemblies 103 extends to one of the drum covers 2 and is connected with a steam passage 104 on the inner wall of the drum cover 2, and a hollow cylindrical steam chamber 105 is arranged at the center of the inner wall of the drum cover 2, the steam chamber 105 is in communication with a steam delivery shaft penetrating through the center of the drum cover 2, and the steam chamber 105 is in communication with the two heat exchanger assemblies 103 through the two steam passages 104 on the two sides thereof.
[0034] In the embodiment, a drum opening 101 for taking and placing the leather is formed on the side wall of the drum cylinder 1, and the drum opening 101 is closed by a drum door.
[0035] In the embodiment, a valve interface 102 is arranged on the side wall of the drum cylinder 1, and the valve interface 102 is located at one end close to the conical screen 4, so as to avoid the skin from blocking the valve.
[0036] The utility model discloses four mutually perpendicular baffle 5 are used to turn over the leather, because baffle 5 is deviated 30 degrees with the axle center and forms a V-shaped groove with the inner wall of drum cylinder 1, the V-shaped groove can lift the skin and the bath liquid to the high place when the overload rotary drum rotates, then slowly slide and hit on the opposite baffle 5 below, therefore the mechanical action of the overload rotary drum is realized by high fall difference and beating, not the centrifugal force when high speed rotates, the acting strength is bigger than traditional rotary drum, makes the absorption speed and absorption effect of the material better. The baffle 5 turns over the skin and will not produce the pulling, winding, tearing and loose face phenomenon to the skin.
[0037] The material absorption is completed by the mechanical action of penetration and beating, therefore the same concentration can be reached by smaller liquid ratio and less material of the overload rotary drum, the consumption of the material and water is saved, thereby the cost is reduced.
[0038] The mechanical action of the overload rotary drum comes from high fall difference beating, when the rotary drum is overloaded, the force on the rotary drum is more balanced, therefore a low-power motor can be used to drive and rotate at low speed, and the rotary drum has the characteristics of large loading capacity, low speed and small energy consumption.
[0039] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A PPH overload rotating drum for leather dyeing processing, comprising a cylindrical drum cylinder (1), drum covers (2) are arranged at both ends of the drum cylinder (1) respectively, mounting brackets (3) for connecting with shafts are arranged on the outer walls of the drum covers (2) respectively; characterized in that, The inner cavity of the drum cylinder (1) is provided with a conical screen (4) at one end, the constricted end and the flared end of the conical screen (4) are fixedly connected with the inner wall of the drum cover (2) and the inner wall of the drum cylinder (1) respectively; four baffles (5) are uniformly distributed on the inner wall of the drum cylinder (1), the two ends of the baffle (5) are fixedly connected with the two drum covers (2) respectively, and the end edge of each baffle (5) close to the conical screen (4) is inclined and fixedly connected with the surface of the conical screen (4), the baffles (5) are all inclined and eccentric to the axis of the drum cylinder (1), and the inclination direction of the baffle (5) is consistent with the rotation direction of the drum cylinder (1), and the adjacent two baffles (5) are perpendicular to each other.
2. A PPH overload rotary drum for leather dyeing process according to claim 1, characterized in that, The drum cylinder (1), the drum cover (2) and the baffle (5) are all made of PPH material.
3. A PPH overloading drum for leather dyeing process according to claim 1, characterized in that, The inclination angle between the baffle (5) and the diameter of the drum cylinder (1) is 30°.
4. A PPH overload rotary drum for leather dyeing process according to claim 3, characterized in that, The baffle (5) comprises a side plate (51) and a honeycomb grid layer (52), the honeycomb grid layer (52) is arranged between the two side plates (51); a groove is formed on the end face of the baffle (5) away from the inner wall of the drum cylinder (1) along the length direction, a PPH reinforcing rib plate (53) is embedded in the groove, and the end face of the PPH reinforcing rib plate (53) is flush with the end face of the baffle (5).
5. A PPH overloading rotating drum for leather dyeing process according to claim 1, characterized in that, The inner walls on both sides of the drum cylinder (1) are symmetrically provided with heat exchanger assemblies (103), one end of each of the two heat exchanger assemblies (103) extends to one of the drum covers (2) and is connected with a steam channel (104) on the inner wall of the drum cover (2), and the inner wall of the drum cover (2) is provided with a steam chamber (105) at the center, the steam chamber (105) is in communication with a steam shaft penetrating through the center of the drum cover (2), and the steam chamber (105) is in communication with the two heat exchanger assemblies (103) through the two steam channels (104) respectively.
6. A PPH overloading rotating drum for leather dyeing process according to claim 1, characterized in that, A drum opening (101) is formed on the side wall of the drum cylinder (1), and the drum opening (101) is closed by a drum door.
7. A PPH overloading rotating drum for leather dyeing process according to claim 1, characterized in that, A valve interface (102) is arranged on the side wall of the drum cylinder (1) close to the conical screen (4).