A drum drainage device for leather production

Abstract

A kind of leather production is rotated and is drained device, comprising: rotary drum, it is configured to be driven rotation;Drain pipe, it is located on the outside wall of rotary drum, and with the inside of rotary drum is communicated;Valve, it is located in drain pipe, it is configured to be rotatable open or close drain pipe;Seal tube, it is fixedly arranged in drain pipe and is communicated with drain pipe, seal tube is at the outer end of valve side away from rotary drum, the inside of seal tube is equipped with a taper groove;Gravity cone, it is swingably arranged in the inside of seal tube.The utility model utilizes the centrifugal force when rotary drum rotates as drainage power, installs a drain pipe on the outside of rotary drum, when needing to drain, open the valve in drain pipe, the water in rotary drum can be thrown out from inside by centrifugal force;Meanwhile, by installing gravity cone in drain pipe, control rotary drum rotates to specific angle range drainage, effectively prevent waste liquid from rotary drum top spill, realized controllable, efficient angle drainage.

Description

Technical Field

[0001] This utility model belongs to the field of leather production technology, specifically referring to a rotary drum drainage device for leather production. Background Technology

[0002] The drum is a core piece of equipment in leather tanning, widely used in key processes such as tanning, retanning, dyeing, and fatliquoring. Its working principle involves continuous rotation, causing friction, compression, and agitation between the hide and chemical solutions (such as tanning agents, dyes, and oils), promoting the uniform and rapid penetration of chemicals into the hide and giving it a soft texture and good elasticity. Furthermore, as a sealed or sealable container, the drum typically has the function of introducing cold or hot water to achieve temperature control.

[0003] In the production of high-quality leather, wooden drums are considered irreplaceable equipment due to their excellent heat retention, gentle mechanical action on the leather surface, and superior chemical resistance. During the tanning process, before moving on to the next step of a different chemical treatment, the drum often needs to be drained. However, to achieve efficient drainage, current methods typically embed drainage components made of non-wooden materials such as metal into the drum body. This compromises the integrity of the wooden drum and may scratch the leather during operation due to the introduction of hard materials, ultimately negatively impacting the leather quality. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a drum drainage device for leather production, which at least partially solves the above problems.

[0005] The technical solution adopted by this utility model is as follows: This utility model proposes a rotary drum drainage device for leather production, comprising: The drum is configured to rotate under drive. A drain pipe is provided on the outer wall of the drum and communicates with the inside of the drum; A valve is located inside the drain pipe and is configured to rotatably open or close the drain pipe; A sealing cylinder is fixedly installed inside the drain pipe and connected to the drain pipe. The sealing cylinder is located at the outer end of the valve on the side away from the rotating drum, and a conical groove is provided inside the sealing cylinder. A gravity cone is oscillatingly disposed inside the sealing cylinder, wherein when the drum rotates, the gravity cone can rotate to different angles and cooperate with the cone groove to achieve sealing or opening of the sealing cylinder.

[0006] Furthermore, a motor is fixed on the outer wall of the drum, and the output shaft of the motor passes through the drain pipe and is connected to the valve to drive the valve to rotate.

[0007] Furthermore, a first support is provided between the sealing cylinder and the valve, and the gravity cone is connected to the first support by a spring.

[0008] Furthermore, a second support is provided on the side of the sealing cylinder near the first support, and a connecting rod is slidably provided inside the second support. The spring is connected between the first support and the connecting rod and pulls the connecting rod toward the first support. The end of the connecting rod away from the first support is hinged to the gravity cone.

[0009] Furthermore, the gravity cone is provided with a counterweight.

[0010] Furthermore, the sealing cylinder is provided with an avoidance groove, and the second bracket is disposed in the avoidance groove. The avoidance groove maintains the communication between the inside of the sealing cylinder and the drain pipe, and its bottom is connected to the conical groove.

[0011] The beneficial effects of this invention are as follows: Utilizing the centrifugal force of the rotating drum as the drainage power, a drain pipe is installed on the outside of the drum. When drainage is needed, the valve inside the drain pipe is opened, and the water inside the drum is thrown out by centrifugal force. Simultaneously, to drain from the bottom and prevent wastewater from splashing out from the top, a gravity cone is installed inside the drain pipe. When the drum rotates to a specific angle, the gravity cone automatically opens the valve under its own weight, and the waste liquid is discharged through the drain pipe under centrifugal force. After the drum has rotated past this angle, the valve automatically closes, effectively preventing waste liquid from spilling out from the top, thus achieving controllable and efficient angle-based drainage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the rotary drum drainage device for leather production according to an embodiment of this utility model; Figure 2 This is a cross-sectional view of the internal components of the drain pipe; Figure 3 The diagram shows the state of the gravity cone and the sealing cylinder. Figure 4 This diagram shows the positional relationship between the first support, connecting rod, sealing cylinder, and gravity cone. Figure 5 This is a cross-sectional view of the sealing tube.

[0013] Among them, 1. Drum, 2. Motor, 3. Drain pipe, 4. Valve, 5. First support, 6. Spring, 7. Connecting rod, 8. Sealing cylinder, 9. Gravity cone, 10. Counterweight, 11. Clearance groove, 12. Conical groove, 13. Second support.

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] like Figure 1 , Figure 2 and Figure 5 As shown in the figure, a drainage device for a leather production drum 1 proposed in this embodiment of the present invention includes a drum 1, a drain pipe 3, a valve 4, a sealing cylinder 8, and a gravity cone 9. The drum 1 is driven to rotate. The drain pipe 3 is located on the outer wall of the drum 1 and communicates with the inside of the drum 1. The valve 4 is located inside the drain pipe 3 and is configured to rotatably open or close the drain pipe 3. The sealing cylinder 8 is fixedly located inside the drain pipe 3 and communicates with the drain pipe 3. The sealing cylinder 8 is located at the outer end of the valve 4 on the side away from the drum 1. A conical groove 12 is provided inside the sealing cylinder 8. The gravity cone 9 is oscillatingly located inside the sealing cylinder 8. When the drum 1 rotates, the gravity cone 9 can rotate to different angles and cooperate with the conical groove 12 to achieve sealing or opening of the sealing cylinder 8.

[0018] Specifically, during the leather-making process, the leather is placed in the rotating drum 1 and rotated repeatedly for a set time. Then, the valve 4 in the drain pipe 3 is opened, and the rotating drum 1 continues to rotate. The wastewater in the rotating drum 1 flows to the inner wall of the rotating drum 1 under the action of centrifugal force and enters the drain pipe 3. The wastewater will first pass through the valve 4 and reach the sealing cylinder 8. When the drain pipe 3 rotates to the area below the central axis of the rotating drum 1, the gravity cone 9 separates from the sealing cylinder 8 and forms a gap. The wastewater will flow out from this gap so that it can be collected in the collection tank below (not shown in the attached figure). When the drain pipe 3 rotates to the area above the central axis of the rotating drum 1, the gravity cone 9 and the sealing cylinder 8 are sealed together, so that the wastewater will not be thrown out in the area above the central axis, thus avoiding environmental pollution.

[0019] Furthermore, such as Figures 3-4As shown, a first support 5 is provided between the sealing cylinder 8 and the valve 4. The gravity cone 9 is connected to the first support 5 through a spring 6. The spring 6 always pulls the gravity cone 9 in its direction. When the drum 1 rotates to below the central axis, the gravity cone 9 exerts a downward force on the spring 6, overcoming the tension of the spring 6 and forming a gap between it and the sealing cylinder 8. Specifically, when the gravity cone 9 is vertically downward, its tension on the spring 6 is equal to the weight of the gravity cone 9. At this time, the tension applied by the spring 6 is insufficient to overcome the gravity, so that a gap is formed between the gravity cone 9 and the sealing cylinder 8. When the gravity cone 9 is obliquely downward, its tension on the spring 6 is equal to the component of the gravity at the current tilt angle. If this component is greater than the spring 6... Despite the applied tension, a gap still exists between the gravity cone 9 and the sealing cylinder 8. If this component force is less than the tension applied by the spring 6, the gravity cone 9 and the sealing cylinder 8 will close. Therefore, when the drain pipe 3 on the drum 1 rotates to the area below the central axis of the drum 1, it only drains water within a certain angle range (this angle is related to the gravity of the gravity cone 9 and the characteristics of the spring 6). Beyond this angle, the component force of gravity cannot overcome the tension of the spring 6, which will cause the drain pipe 3 to close. When the drum 1 continues to rotate, causing the drain pipe 3 to reach above the central axis, the tension of the spring 6 and the gravity of the gravity cone 9 are in the same direction. The gravity cone 9 will fit tightly against the sealing cylinder 8, closing the drain pipe 3 and preventing it from draining water.

[0020] In some embodiments, to further define the swing point of the gravity cone 9, ensuring that its swing apex is always located on the central axis of the drain pipe 3, such as... Figures 3-4 As shown, a second support 13 is provided on the side of the sealing cylinder 8 near the first support 5. A connecting rod 7 is slidably provided inside the second support 13. A spring 6 is connected between the first support 5 and the connecting rod 7 and pulls the connecting rod 7 towards the first support 5. The end of the connecting rod 7 away from the first support 5 is hinged to the gravity cone 9. The gravity of the gravity cone 9 is applied to the connecting rod 7 on the second support 13, and the connecting rod 7 is restricted by the second support 13 so that it can only slide along the central axis of the drain pipe 3. The apex of the gravity cone 9, which is hinged to the connecting rod 7, is always on the central axis of the drain pipe 3, which makes it easy to control and calculate the swing parameters of the gravity cone 9, and adjust the parameters of the gravity cone 9 and the spring 6 according to actual needs. Under appropriate working conditions, a counterweight 10 can be installed on the gravity cone 9.

[0021] In some embodiments, such as Figure 5 As shown, the sealing cylinder 8 is provided with a relief groove 11, and the second support 13 is located in the relief groove 11. The relief groove 11 provides working space for the linkage of the first support 5, the second support 13, the connecting rod 7 and the spring 6, and maintains the connection between the inside of the sealing cylinder 8 and the drain pipe 3, so that the bottom is connected to the cone groove 12, which will not affect the normal drainage operation.

[0022] In some embodiments, such as Figure 1 and Figure 2As shown, a motor 2 is fixed on the outer wall of the drum 1. The output shaft of the motor 2 passes through the drain pipe 3 and is connected to the valve 4. When working, the motor 2 starts and drives the valve 4 to rotate. The valve 4 is adapted to the inner diameter of the drain pipe 3. When the plane of the valve 4 rotates to be perpendicular to the axis of the drain pipe 3, the drain pipe 3 is closed. When the plane of the valve 4 rotates to be parallel to the axis of the drain pipe 3, the drain pipe 3 is opened so as to discharge the wastewater in the drum 1.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A drum drainage device for leather production, comprising a driven rotating drum (1), characterized in that, include: A drain pipe (3) is provided on the outer wall of the drum (1) and communicates with the inside of the drum (1); A valve (4) is provided inside the drain pipe (3) and is configured to rotatably open or close the drain pipe (3). The sealing cylinder (8) is fixedly installed inside the drain pipe (3) and connected to the drain pipe (3). The sealing cylinder (8) is located at the outer end of the valve (4) away from the drum (1). The sealing cylinder (8) has a conical groove (12) inside. A gravity cone (9) is oscillatingly disposed inside the sealing cylinder (8). When the drum (1) rotates, the gravity cone (9) can rotate to different angles and cooperate with the cone groove (12) to achieve sealing or opening of the sealing cylinder (8).

2. The draining device for a rotating drum in leather production according to claim 1, characterized in that: A motor (2) is fixed on the outer wall of the drum (1). The output shaft of the motor (2) passes through the drain pipe (3) and is connected to the valve (4) to drive the valve (4) to rotate.

3. The draining device for a rotating drum in leather production according to claim 1, characterized in that: A first support (5) is provided between the sealing cylinder (8) and the valve (4), and the gravity cone (9) is connected to the first support (5) by a spring (6).

4. The draining device for a rotating drum in leather production according to claim 3, characterized in that: The sealing cylinder (8) is provided with a second support (13) on the side close to the first support (5). A connecting rod (7) is slidably provided in the second support (13). The spring (6) is connected between the first support (5) and the connecting rod (7) and pulls the connecting rod (7) toward the first support (5). The end of the connecting rod (7) away from the first support (5) is hinged to the gravity cone (9).

5. The draining device for a rotating drum in leather production according to claim 4, characterized in that: The gravity cone (9) is provided with a counterweight (10).

6. The draining device for a rotating drum in leather production according to claim 4, characterized in that: The sealing cylinder (8) is provided with a relief groove (11), and the second bracket (13) is located in the relief groove (11). The relief groove (11) maintains the connection between the inside of the sealing cylinder (8) and the drain pipe (3), and its bottom is connected to the conical groove (12).

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