Vacuum drying table for leather drying machine
By adopting a cooling water pipe structure arranged along the length of the platen in the vacuum drying table of the leather dryer and setting the cooling water pipe in the vacuum channel, the problem of poor cooling effect in the prior art is solved, and a more efficient cooling effect and a more compact structural design are achieved.
Patent Information
- Application Number
- CN202510041890.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-04-25
AI Technical Summary
The cooling pipeline structure of existing leather dryers limits the water flow power, resulting in poor cooling effect.
The cooling water pipe structure is adopted along the length of the platen to ensure that the water flow direction is unidirectional, and the cooling water pipe is set in the vacuum channel to enhance the water flow power and cooling effect.
The cooling speed and cooling effect are improved, the space occupied by the vacuum drying table is reduced, and the cooling process of humid and hot gases is optimized.
Smart Images
Figure CN119879464A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of leather processing, and in particular to a vacuum drying table for a leather drying machine. Background Art
[0002] In the leather manufacturing industry, the moisture content of leather needs to be reduced from 60%-75% to 16%-18% after wet processing. At present, tanneries generally use evaporative drying, which is to first convert the moisture or solvent in the leather into steam and then discharge the steam. The vacuum dryer is the main equipment of the evaporative drying method. Under vacuum, it uses a heat source to supply enough heat to the moisture in the leather through conduction heating, so that the moisture evaporates and boils, accelerating the vaporization rate. At the same time, vacuuming can quickly extract the vaporized steam and form a negative pressure state around the leather, forming a large humidity gradient between the inner and outer layers of the leather and between the surface and the surrounding medium, accelerating the vaporization rate and achieving the purpose of rapid drying.
[0003] At present, leather dryers generally include a vacuum drying table, a cover plate covering the upper surface of the vacuum drying table, and a heating channel and a vacuum channel arranged on the vacuum drying table, wherein the heating channel is connected to an external heat source for heating the vacuum drying table, and the vacuum channel is connected to a vacuum device for forming a negative pressure on the surface of the vacuum drying table; in addition, a cooling pipe is generally provided inside the vacuum drying table, and the cooling water pipe is connected to an external cooling water source for reducing the moisture in the steam to achieve cooling. However, the current cooling pipe forms a C shape inside the vacuum drying table, that is, one end and the other end of the cooling pipe are inserted through the same end of the vacuum drying table so as to form a circulation structure with the cooling pipe and the external cooling water source. Then, the arrangement of this cooling pipe limits the water flow force of the cooling pipe, and the water flow rate is slow, which makes the cooling effect poor, so it needs to be improved. Summary of the invention
[0004] In order to optimize the cooling effect of a leather dryer, the present application provides a vacuum drying table for the leather dryer.
[0005] The present application provides a vacuum drying table for a leather dryer, which adopts the following technical solution: A vacuum drying table for a leather dryer comprises a table top and a heating structure arranged in the table top, a vacuum channel is provided inside the table top, and an air vent connected to the vacuum channel is provided on the surface of the table top; a docking box body for connecting to the vacuum channel is provided at one end of the vacuum channel, a cooling water pipe is provided inside the vacuum channel along its length direction, one end of the cooling water pipe passes through the vacuum channel and the docking box body, the cooling water pipe comprises a plurality of branch pipes for supplying water flow, and the other end of the cooling water pipe passes through one end of the vacuum channel away from the docking box body, so that the water flow direction is unidirectional and parallel to the length direction of the table top; an exhaust pipe is connected to the side of the docking box body away from the cooling water pipe.
[0006] By adopting the above technical scheme, the cooling water pipe of the present scheme is a structure arranged along the length direction of the table plate, thereby limiting the water flow direction to unidirectional flow, rather than the C-shaped structure in the traditional vacuum drying table. The unidirectional flow of water increases the water flow power, thereby improving the cooling speed, and the two ends of the cooling water pipe can be connected to the cooling tower through pipes to circulate cooling water to the vacuum drying table; in addition, the cooling water pipe is arranged in the vacuum channel, on the one hand, it can make the internal structure distribution of the vacuum drying table more compact and reduce the occupied space, and on the other hand, it can also make the humid hot gas fully contact with the outer wall of the cooling water pipe when being extracted, thereby achieving cooling and optimizing the cooling effect.
[0007] Preferably, a guide plate is provided on the inner wall of the docking box, one side of the guide plate is connected to the end wall of the exhaust pipe, and the other end is inclined toward the direction close to the vacuum channel.
[0008] By adopting the above technical scheme, in order to reduce the flow resistance of water flowing through the cooling water pipe and improve the water flow dynamics and flow rate, the length direction of the cooling water pipe of the present application is parallel to the length direction of the vacuum channel, and therefore the part of the docking box through which the end of the cooling water pipe passes must be located in the length direction of the vacuum channel. This arrangement makes the exhaust pipe only located on one side of the length direction of the vacuum channel. Under this premise, the present application specially arranges an inclined guide plate to accelerate the exhaust speed.
[0009] Preferably, a first support plate and a second support plate are provided in the vacuum channel, and a plurality of the first support plates and the second support plates are provided along the length direction of the vacuum channel; the first support plate is connected to the inner wall on one side of the vacuum channel, and the second support plate is connected to the inner wall on the other side of the vacuum channel; the length directions of the first support plate and the second support plate are parallel to the width direction of the vacuum channel; the length of the first support plate and the length of the second support plate are both smaller than the width of the vacuum channel, and the sum of the lengths of the first support plate and the second support plate is larger than the width of the vacuum channel; through holes are provided on the side walls of the first support plate and the second support plate for the branch pipe to pass through and be inserted.
[0010] By adopting the above technical solution, a plurality of first support plates and second support plates arranged along the length direction of the vacuum channel are used to support the branch pipes, and because the total length of the first support plate and the second support plate is greater than the width of the vacuum channel, all branch pipes can be supported by combining the first support plate and the second support plate, thereby increasing the structural strength of the cooling water pipes. In addition, because the first support plate and the second support plate are arranged on different sides of the vacuum channel, this structure can reduce the flow resistance of the first support plate and the second support plate to the exhaust airflow on the basis of ensuring that the cooling water pipes are supported by the first support plate and the second support plate.
[0011] Preferably, the diameter of the through hole is larger than the outer diameter of the branch pipe, and the bottom wall of the through hole always fits with the outer wall of the corresponding branch pipe.
[0012] By adopting the above technical solution, this solution limits the aperture of the through hole to be larger than the outer diameter of the branch pipe, so as to increase the hollow area of the first support plate and the second support plate, thereby further reducing the flow resistance to the vacuum airflow. In addition, this application limits the bottom wall of the through hole to always fit the outer wall of the corresponding branch pipe. This limiting scheme makes the scheme of increasing the hollow area proposed in this application always based on the first support plate and the second support plate being able to provide stable support for the branch pipe.
[0013] Preferably, the through hole is a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the width direction of the vacuum channel; and a moving part is also included, and the moving part is used to drive the first support plate and the second support plate to slide along a direction parallel to the vacuum channel.
[0014] By adopting the above technical solution, the first support plate and the second support plate are driven by the moving part to slide back and forth in a direction parallel to the width direction of the vacuum channel, and the waist-shaped holes are used to adjust the airflow direction during the sliding process, thereby improving the fluidity of the airflow, optimizing the contact between the humid and hot gas and the outer wall of the branch pipe, and thus improving the cooling effect.
[0015] Preferably, a cover plate and an opening and closing assembly are provided in the vacuum channel, and the opening and closing assembly is used to drive the cover plate to move and to open and close the connection between the vent hole and the vacuum channel during the movement of the cover plate.
[0016] By adopting the above technical solution, the setting of the cover plate and the opening and closing component can realize the connection between the vent hole and the vacuum channel. For example, when the leather drying process is not required, the cover plate can be driven by the opening and closing component to move and cover the vent hole, so that the vent hole and the vacuum channel are disconnected from each other, thereby alleviating the problem of dust and blockage at the connection between the vent hole and the vacuum channel.
[0017] Preferably, a return spring is commonly connected between the cover plate and the inner wall of the vacuum channel, and the cover plate is slidably connected to the inner wall of the vacuum channel through the return spring; a docking rod is provided on the side wall of the cover plate near each vent hole, and the docking rod is slidably connected to the cover plate, and the sliding direction of the docking rod is parallel to the depth direction of the vent hole; when the return spring is not deformed, the cover plate and the docking rod are both located on the side of the vacuum channel away from the vent hole; The opening and closing assembly includes a first docking block and a second docking block; the first docking block is arranged on the first support plate, so as to push the cover plate and drive the cover plate to move as the first support plate slides, so that the docking rod on the cover plate moves to directly below the vent; the second docking block is arranged on the second support plate, and the second docking block is used to push the docking rod in the process of moving with the second support plate in the direction close to the vent, so that the docking rod is inserted into the corresponding vent.
[0018] By adopting the above technical solution, the opening and closing assembly of the present application enables the cover plate to open and close on the vent hole with the help of the movement of the first support plate and the second support plate, and drives the docking rod to insert or detach from the vent hole, thereby realizing the opening and closing of the vent hole.
[0019] Preferably, there are several cover plates, and the first support plates and the second support plates are arranged one-to-one with the cover plates. The moving member is used to drive all the first support plates to push the cover plates to move in a predetermined order, so that the cover plates are moved sequentially in the predetermined order to cover the surface of the vent hole, and then after all the cover plates are covered at the vent hole, all the second support plates are driven to move and the docking rod is inserted into the vent hole; wherein the predetermined order is the order from near to far relative to the exhaust pipe.
[0020] By adopting the above technical solution, this solution splits the cover plate into several parts and limits the order in which each cover plate covers the air holes at the corresponding positions, so as to adjust the connection order between the air holes at different positions and the exhaust channels, so that the vacuum pumping equipment connected to the exhaust pipe can have the same suction force on the exhaust holes at different distances from it.
[0021] Preferably, a limit spring is provided between the first support plate and the inner wall of the vacuum channel, and between the second support plate and the inner wall of the vacuum channel; the moving member comprises a moving rod, and a moving member for driving the moving rod to slide along the length direction of the vacuum channel; the moving rod is provided with a first convex strip and a second convex strip, the first convex strip is provided on a side of the moving rod close to the first support plate, the second convex strip is provided on a side of the moving rod close to the second support plate, the first convex strip is provided in a one-to-one correspondence with the first support plate, and the second convex strip is provided in a one-to-one correspondence with the second support plate; When the limit spring is not deformed, the first initial distances between different first convex strips and the corresponding first support plates are different, and the first initial distances increase sequentially along the predetermined direction, the predetermined direction is the direction from near to far relative to the exhaust pipe, and when the first support plate farthest from the exhaust pipe contacts the corresponding first convex strip, the remaining first support plates are always in contact with the corresponding first convex strips; When the limit spring is not deformed, the second initial distance between the second convex strip and the corresponding second support plate satisfies: before the first support plate farthest from the exhaust pipe contacts the corresponding first convex strip, the second convex strip is always out of contact with the corresponding second support plate, until the first support plate farthest from the exhaust pipe contacts the corresponding first convex strip, the second convex strip moves to contact the second support plate and pushes the second support plate, so that the second docking block pushes the corresponding docking rod to be inserted into the corresponding vent hole.
[0022] By adopting the above technical solution, by limiting the different first initial distances, the cover plate closer to the exhaust pipe is preferentially pushed by the first support plate to cover the vent hole. After all the cover plates are covered with the corresponding vent holes, the second convex strip is used to drive the second support plate to move and the second docking block pushes the docking rod to be inserted into the corresponding vent hole.
[0023] Preferably, a water-absorbent cotton layer is provided on the peripheral wall of the docking rod.
[0024] By adopting the above technical solution, the provision of the water-absorbing cotton layer can be used to cooperate with the docking rod to clear the vent hole when the docking rod is inserted into the vent hole, and at the same time remove the moisture retained on the inner wall of the vent hole.
[0025] In summary, this application includes the following beneficial technical effects: The cooling water pipe of the present invention is a structure arranged along the length direction of the table plate, thereby limiting the water flow direction to unidirectional flow, rather than the C-shaped structure in the traditional vacuum drying table. The unidirectional flow of water increases the water flow power, thereby increasing the cooling speed, and the two ends of the cooling water pipe can be connected to the cooling tower through pipes to circulate cooling water to the vacuum drying table; in addition, the cooling water pipe is arranged in the vacuum channel, on the one hand, which can make the internal structure distribution of the vacuum drying table more compact and reduce the occupied space, and on the other hand, it can also make the humid hot gas fully contact with the outer wall of the cooling water pipe when being extracted, thereby achieving cooling and optimizing the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic structural diagram of a vacuum drying table for a leather dryer disclosed in Example 1 of the present application.
[0027] Figure 2It is an exploded schematic diagram of a vacuum drying table for a leather dryer disclosed in Example 1 of the present application.
[0028] Figure 3 It is a cross-sectional view used to reflect the internal structure of the vacuum channel in Example 1.
[0029] Figure 4 It is an exploded schematic diagram used to illustrate the structure of the first support plate and the second support plate in Example 2 of the present application.
[0030] Figure 5 It is a cross-sectional view used to illustrate the positional relationship between the first support plate and the vacuum channel when the cover plate is closed on the vent hole in Example 2.
[0031] Figure 6 It is a cross-sectional view used to illustrate the positional relationship between the second support plate and the vacuum channel when the cover plate is closed on the vent hole in Example 2.
[0032] Figure 7 It is a cross-sectional view used to illustrate the positional relationship between the cover plate and the vacuum channel when the cover plate is closed on the vent hole in Example 2.
[0033] Figure 8 It is a schematic diagram for illustrating the positional relationship between the first convex strip and the first support plate, and between the second convex strip and the second support plate when the cover plate is closed over the vent hole in Embodiment 2.
[0034] Explanation of the reference numerals: 1. table; 11. vent hole; 12. vacuum channel; 13. docking box; 2. cooling water pipe; 21. branch pipe; 3. exhaust pipe; 4. first support plate; 41. through hole; 42. limit spring; 5. second support plate; 6. moving part; 61. moving rod; 62. moving part; 63. first convex strip; 64. second convex strip; 7. cover plate; 71. reset spring; 72. docking rod; 721. absorbent cotton layer; 8. opening and closing assembly; 81. first docking block; 82. second docking block. DETAILED DESCRIPTION
[0035] The following is combined with Figure 1-8 This application is described in further detail.
[0036] Example 1 Example 1 of the present application discloses a vacuum drying table for a leather drying machine. Figure 1 and Figure 2The vacuum drying table for the leather dryer includes a table top 1 and a heating structure arranged inside the table top 1. The heating structure can be specifically a pipeline for introducing and transmitting a heat medium (such as hot air or hot water). The pipeline is embedded in the table top 1, and both ends of the pipeline can be respectively connected to a heat medium supply source (such as a heat exchanger). Since the heating structure included in the leather dryer is a prior art, it will not be elaborated on here. Ventilation holes 11 are provided through the upper surface of both sides of the table top 1, and vacuum channels 12 for communicating with the vent holes 11 at corresponding positions are provided inside the table top 1 and on both sides thereof, respectively. The vacuum channel 12 is arranged along the length direction of the table top 1, and one end of the vacuum channel 12 in the length direction is connected to a docking box body 13, and a cooling water pipe 2 is inserted inside the vacuum channel 12 along its length direction, one end of the cooling water pipe 2 is inserted through the end of the vacuum channel 12 away from the docking box body 13, and the other end of the cooling water pipe 2 passes through the end of the docking box body 13, and both ends of the cooling water pipe 2 can be externally connected to a cooling water tower to realize the circulation supply of cooling water in the cooling water pipe 2.
[0037] Reference Figure 2 and Figure 3 , a plurality of first support plates 4 and second support plates 5 are also provided inside the vacuum channel 12 along its length direction, the first support plate 4 is fixedly connected to the side wall of one side of the vacuum channel 12, and the second support plate 5 is fixedly connected to the side wall of the other side of the vacuum channel 12, and the first support plates 4 and the second support plates 5 are alternately distributed. The cooling water pipe 2 includes a plurality of branch pipes 21, and the branch pipes 21 pass through the first support plate 4 and / or the second support plate 5. And the sum of the lengths of a single first support plate 4 and a single second support plate 5 in the present application is greater than the width of the vacuum channel 12, so that all branch pipes 21 can be supported by the first support plate 4 and / or the second support plate 5.
[0038] Reference Figure 2 and Figure 3 The side wall of the docking box body 13 is also connected to an exhaust pipe 3, which is connected to the vent hole 11 through the docking box body 13 and the vacuum channel 12. The exhaust pipe 3 can be connected to an exhaust device (such as an exhaust pump) to achieve vacuum treatment on the upper surface of the table plate 1.
[0039] The implementation principle of a vacuum drying table for a leather dryer disclosed in Example 1 of the present application is as follows: cold water enters the cooling water pipe 2 from the end of the cooling water pipe 2 away from the docking box body 13, and is output from the cooling water pipe 2 at one end of the docking box body 13 along the length direction of the cooling water pipe 2. After cooling circulation through an external cooling water tower, it is re-introduced into the end of the cooling water pipe 2 away from the docking box body 13, thereby improving the water flow power and flow rate in the cooling water pipe 2 on the basis of realizing the circulation supply of cooling water, thereby optimizing the cooling and drying effect.
[0040] Example 2 Reference Figure 4 , Figure 5 and Figure 6 The vacuum drying table for a leather dryer disclosed in Example 2 of the present application is different from that in Example 1 in that: a through hole 41 for inserting the branch pipe 21 is formed through the side walls of the first support plate 4 and the second support plate 5, and the through hole 41 is specifically a waist-shaped hole, and the length direction of the waist-shaped hole, the length direction of the first support plate 4, and the width direction of the vacuum channel 12 are parallel to each other; the first support plate 4 and the second support plate 5 are slidably connected in the vacuum channel 12 along a direction parallel to the width direction of the vacuum channel 12; and a limit spring 42 is provided between each first support plate 4 and the inner wall of the vacuum channel 12, and between each second support plate 5 and the inner wall of the vacuum channel 12.
[0041] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 , further comprising a moving member 6, an opening and closing assembly 8 and a plurality of cover plates 7. The moving member 6 is used to drive the first support plate 4 and the second support plate 5 to slide in a direction parallel to the width direction of the vacuum channel 12, and to make the first support plate 4 and the second support plate 5 move toward or away from each other. All cover plates 7 are arranged along the length direction of the vacuum channel 12.
[0042] A return spring 71 is commonly connected between the cover plate 7 and the top wall of the vacuum channel 12. The cover plate 7 is slidably connected to the inner top wall of the vacuum channel 12 through the return spring 71, and the sliding direction is parallel to the width direction, and the sliding direction of each cover plate 7 is parallel to the width direction of the vacuum channel 12. A plurality of docking rods 72 are inserted on the surface of each cover plate 7. The number of docking rods 72 on each cover plate 7 is consistent with the number of vents 11 that the cover plate 7 needs to open and close, and corresponds one to one. When the cover plate 7 covers the vents 11, the docking rods 72 will move to the bottom of the corresponding vents 11 with the movement of the cover plate 7; and each docking rod 72 is slidably connected to the cover plate 7, and the sliding direction is parallel to the depth direction of the vents 11; and the surrounding wall of the docking rod 72 of the present application is also sleeved with a water-absorbing cotton layer 721, which can specifically be a sponge. All docking rods 72 on the same cover plate 7 are commonly connected to the connecting plate.
[0043] The opening and closing assembly 8 is used to drive the cover plate 7 to slide along the width direction of the vacuum channel 12. The opening and closing assembly 8 enables the cover plate 7 to open and close the vent 11 during the sliding process, that is, to achieve the connection between the vent 11 and the vacuum channel 12. Specifically, the opening and closing assembly 8 includes a first docking block 81 and a second docking block 82; the first docking block 81, the first support plate 4, the second support plate 5, and the second docking block 82 are all arranged in a one-to-one correspondence with the cover plate 7, and the side wall of the second docking block 81 and the side wall of the connecting plate on the corresponding cover plate are provided with an inclined surface for contacting each other, and the connecting plate is located on the moving path of the second docking block 81 when it moves with the second support plate 5. The inclined surface is used to drive the connecting plate and all the docking rods 72 located on the connecting plate to move upward when the second docking block 81 contacts the connecting plate, so that the docking rods 72 are inserted into the corresponding vent 11.
[0044] The first docking block 81 is fixedly connected to the upper surface of the corresponding first support plate 4, and the second docking block 82 is fixedly connected to the upper surface of the corresponding second support plate 5. The moving member 6 is used to drive all the first support plates 4 to push the cover plates 7 to move in a predetermined order, so that the cover plates 7 move in sequence in a predetermined order to cover the surface of the vent holes 11, and then after all the cover plates 7 are covered on the vent holes 11, all the second support plates 5 are driven to move and the second docking block 82 pushes the connecting plate, so that all the docking rods 72 on the connecting plate are inserted into the vent holes 11; wherein the predetermined order is the order of distance from near to far relative to the exhaust pipe 3. That is, Figure 8 The direction indicated by the dashed arrow.
[0045] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 Correspondingly, the moving member 6 includes a moving rod 61 and a moving component 62 that drives the moving rod 61 to slide along the length direction of the vacuum channel 12. The moving component 62 of the present application is a combination structure of a gear, a rack and a motor. The gear is fixedly sleeved on the motor driving end, the rack is meshed with the gear, and the rack is connected to the moving rod 61 along the length direction of the moving rod 61 to achieve the sliding of the moving rod 61.
[0046] The moving rod 61 is provided with a first convex strip 63 and a second convex strip 64. The first convex strip 63 is provided on a side of the moving rod 61 close to the first support plate 4, and the second convex strip 64 is provided on a side of the moving rod 61 close to the second support plate 5. The first convex strip 63 is provided in a one-to-one correspondence with the first support plate 4, and the second convex strip 64 is provided in a one-to-one correspondence with the second support plate 5. When the limit spring 42 is not deformed, the first initial distances between different first convex strips 63 and the corresponding first support plates 4 are different, and the first initial distances increase in sequence along a predetermined direction, which is a direction from near to far relative to the exhaust pipe 3, and when the first support plate 4 farthest from the exhaust pipe 3 contacts the corresponding first convex strip 63, the remaining first support plates 4 are always in contact with the corresponding first convex strips 63; When the limit spring 42 is not deformed, the second initial distance between the second ridge 64 and the corresponding second support plate 5 satisfies: before the first support plate 4 farthest from the exhaust pipe 3 contacts the corresponding first ridge 63, the second ridge 64 is always out of contact with the corresponding second support plate 5, until the first support plate 4 farthest from the exhaust pipe 3 contacts the corresponding first ridge 63, the second ridge 64 moves to contact the second support plate 5 and pushes the second support plate 5, so that the second docking block 82 pushes the corresponding docking rod 72 to be inserted into the corresponding vent hole 11.
[0047] When the moving member 62 drives the moving rod 61 to move in a direction away from the exhaust pipe 3, the first convex strip 63 on the moving rod 61 will approach and push the corresponding first support plate 4, so that the first docking block 81 on the first support plate 4 moves in a direction close to the corresponding cover plate 7 and pushes the cover plate 7 to cover the corresponding first support plate 4. Since the first initial distances between different first convex strips 63 and the corresponding first support plate 4 are different, all the first convex strips 63 contact the corresponding first support plate 4 in sequence according to the aforementioned predetermined order, so that All cover plates 7 are successively covered under the corresponding ventilation holes 11, and in this process, the second ridges 64 never move to the position of contacting the second support plate 5, until the first ridge 63 farthest from the exhaust pipe 3 contacts the corresponding first support plate 4 and makes the corresponding cover plate 7 cover the ventilation hole 11, all second ridges 64 just contact the corresponding second support plate 5 and push the second support plate 5 to make the second docking block 82 contact the corresponding docking rod 72, and make the docking rod 72 inserted into the corresponding ventilation hole 11.
[0048] It should be noted that the length of the first ridges 63 satisfies the following two conditions: Condition 1: before the first ridge 63 farthest from the exhaust pipe 3 moves the corresponding second support plate 5 to make the corresponding cover plate 7 cover the vent 11, the remaining first ridges 63 that have been in contact with the corresponding first support plate 4 will always be in contact with the second ridges 64, that is, the corresponding cover plate 7 will remain in a state of covering the bottom of the vent 11; Condition 2: from the time the second ridge 64 is in contact with the second support plate 5 to the time when the docking rod 72 is inserted into the corresponding vent 11, all the first ridges 63 will remain in contact with the corresponding first support plate 4, that is, in the process of the second docking block 82 pushing the docking rod 72 upward, the corresponding cover plate 7 is always pushed by the first support plate 4 and remains in a position below the vent 11.
[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A vacuum drying table for a leather drying machine, comprising a table plate (1) and a heating structure arranged in the table plate (1), characterized in that: A vacuum channel (12) is provided inside the table top (1), and a vent hole (11) connected to the vacuum channel (12) is provided on the surface of the table top (1); a docking box (13) for connecting to the vacuum channel (12) is provided at one end of the vacuum channel (12); a cooling water pipe (2) is provided inside the vacuum channel (12) along its length direction, one end of the cooling water pipe (2) passes through the vacuum channel (12) and the docking box (13), the cooling water pipe (2) includes a plurality of branch pipes (21) for supplying water flow, and the other end of the cooling water pipe (2) passes through one end of the vacuum channel (12) away from the docking box (13), so that the water flow direction is unidirectional and parallel to the length direction of the table top (1); a side of the docking box (13) away from the cooling water pipe (2) is connected to an exhaust pipe (3).
2. The vacuum drying table for leather drying machine according to claim 1, characterized in that: The inner wall of the docking box body (13) is provided with a guide plate, one side of which is connected to the end wall of the exhaust pipe (3), and the other end of which is inclined in a direction close to the vacuum channel (12).
3. The vacuum drying table for leather drying machine according to claim 1, characterized in that: A first support plate (4) and a second support plate (5) are arranged in the vacuum channel (12), and a plurality of the first support plates (4) and the second support plates (5) are arranged along the length direction of the vacuum channel (12); the first support plate (4) is connected to the inner wall of one side of the vacuum channel (12), and the second support plate (5) is connected to the inner wall of the other side of the vacuum channel (12); the length directions of the first support plate (4) and the second support plate (5) are parallel to the width direction of the vacuum channel (12); the length of the first support plate (4) and the length of the second support plate (5) are both smaller than the width of the vacuum channel (12), and the total length of the first support plate (4) and the second support plate (5) is greater than the width of the vacuum channel (12); and the side walls of the first support plate (4) and the second support plate (5) are provided with through holes (41) for the branch pipe (21) to penetrate and insert.
4. The vacuum drying table for leather drying machine according to claim 3, characterized in that: The diameter of the through hole (41) is greater than the outer diameter of the branch pipe (21), and the bottom wall of the through hole (41) is always in contact with the outer wall of the corresponding branch pipe (21).
5. The vacuum drying table for leather drying machine according to claim 4, characterized in that: The through hole (41) is a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the width direction of the vacuum channel (12); and a moving member (6) is also included, and the moving member (6) is used to drive the first support plate (4) and the second support plate (5) to slide along a direction parallel to the vacuum channel (12).
6. The vacuum drying table for leather drying machine according to claim 5, characterized in that: A cover plate (7) and an opening and closing assembly (8) are provided in the vacuum channel (12); the opening and closing assembly (8) is used to drive the cover plate (7) to move and to open and close the connection between the vent hole (11) and the vacuum channel (12) during the movement of the cover plate (7).
7. The vacuum drying table for leather drying machine according to claim 6, characterized in that: A return spring (71) is commonly connected between the cover plate (7) and the inner wall of the vacuum channel (12), and the cover plate (7) is slidably connected to the inner wall of the vacuum channel (12) via the return spring (71); a docking rod (72) is provided on the side wall of the cover plate (7) near each vent hole (11), and the docking rod (72) is slidably connected to the cover plate (7), and the sliding direction of the docking rod (72) is parallel to the depth direction of the vent hole (11); when the return spring (71) is not deformed, the cover plate (7) and the docking rod (72) are both located on a side of the vacuum channel (12) away from the vent hole (11); The opening and closing assembly (8) comprises a first docking block (81) and a second docking block (82); the first docking block (81) is arranged on the first support plate (4) to push the cover plate (7) and drive the cover plate (7) to move as the first support plate (4) slides, so that the docking rod (72) on the cover plate (7) moves to just below the vent hole (11); the second docking block (82) is arranged on the second support plate (5), and the second docking block (82) is used to push the docking rod (72) in the process of moving in the direction of approaching the vent hole (11) as the second support plate (5) moves, so that the docking rod (72) is inserted into the corresponding vent hole (11).
8. The vacuum drying table for leather drying machine according to claim 7, characterized in that: There are a plurality of cover plates (7), and the first support plates (4) and the second support plates (5) are arranged one by one with the cover plates (7). The moving member (6) is used to drive all the first support plates (4) to push the cover plates (7) to move in a predetermined order, so that the cover plates (7) are moved in sequence in a predetermined order to cover the surface of the vent hole (11), and then after all the cover plates (7) are covered on the vent hole (11), all the second support plates (5) are driven to move and the docking rod (72) is inserted into the vent hole (11); wherein the predetermined order is the order of distance from the exhaust pipe (3) from near to far.
9. The vacuum drying table for leather drying machine according to claim 8, characterized in that: A limit spring (42) is provided between the first support plate (4) and the inner wall of the vacuum channel (12), and between the second support plate (5) and the inner wall of the vacuum channel (12); the moving member (6) comprises a moving rod (61) and a moving component (62) for driving the moving rod (61) to slide along the length direction of the vacuum channel (12); a first convex strip (63) and a second convex strip (64) are provided on the moving rod (61); the first convex strip (63) is provided on a side of the moving rod (61) close to the first support plate (4), and the second convex strip (64) is provided on a side of the moving rod (61) close to the second support plate (5); the first convex strip (63) and the first support plate (4) are provided in a one-to-one correspondence, and the second convex strip (64) and the second support plate (5) are provided in a one-to-one correspondence; When the limit spring (42) is not deformed, the first initial distances between different first convex strips (63) and the corresponding first support plates (4) are different, and the first initial distances increase sequentially along the predetermined direction, the predetermined direction being the direction from near to far relative to the exhaust pipe (3), and when the first support plate (4) farthest from the exhaust pipe (3) contacts the corresponding first convex strip (63), the remaining first support plates (4) are always in contact with the corresponding first convex strips (63); When the limit spring (42) is not deformed, the second initial distance between the second convex strip (64) and the corresponding second support plate (5) satisfies the following conditions: before the first support plate (4) farthest from the exhaust pipe (3) contacts the corresponding first convex strip (63), the second convex strip (64) is always out of contact with the corresponding second support plate (5), until the first support plate (4) farthest from the exhaust pipe (3) contacts the corresponding first convex strip (63), the second convex strip (64) moves to contact the second support plate (5) and pushes the second support plate (5), so that the second docking block (82) pushes the corresponding docking rod (72) to be inserted into the corresponding ventilation hole (11).
10. The vacuum drying table for leather drying machine according to claim 7, characterized in that: The peripheral wall of the docking rod (72) is provided with a water-absorbing cotton layer (721).