Vibration-resistant and wear-resistant connecting device for dust removal air pipe of vibrating feeder

Abstract

The invention discloses an anti-vibration and wear-resistant connecting device for a dust removal air pipe of a vibrating feeder, and relates to the technical field of vibrating feeders, the anti-vibration and wear-resistant connecting device comprises a connecting flange, a flexible rubber shell is fixedly connected to the inner side of the connecting flange, and protective covers are fixedly connected to the top and the bottom of the connecting flange correspondingly; according to the vibration feeder, the flexible rubber shell and the sealing mechanism are arranged, vibration force generated during operation of the vibration feeder is effectively absorbed and isolated, so that the problem of weld joint breakage of the dust removal air pipe is solved, meanwhile, the sealing mechanism of the device can ensure that the dust removal air pipe keeps good sealing performance in the vibration process, dust leakage is prevented, and the service life of the dust removal air pipe is prolonged. Particularly, when the dust removal air pipe of the vibrating feeder is connected, the connecting port is fixed to the outer wall of the air pipe, the hydraulic push-pull rod is operated to contract, the sliding disc is driven to move inwards along the sleeve, then the connecting rod and the polygonal connecting frame are pulled to move inwards, and the rotating rod is rotated by the hinge block on the connecting frame.

Description

Technical Field

[0001] The invention relates to the technical field of vibrating feeders, in particular to an anti-vibration and wear-resistant connecting device for a dust removal air duct of a vibrating feeder. Background Art

[0002] In CDQ production, the role of the vibrating feeder is crucial to the stable operation of the entire system, achieving uniform feeding, accurately controlling the CDQ furnace material level and T6 temperature stability to maintain a steady flow of steam for power generation. The dust removal air switch installed on the top of the vibrating feeder has the functions of adjusting the internal pressure of the vibrating feeder, heat dissipation, and ash removal. The operating rate of the vibrating feeder will be directly related to the capacity and efficiency of CDQ production. The original design of the dust removal air duct is rigidly connected to the vibrating feeder, and its welding and installation process is simple. The amplitude generated by the operation of the vibrating feeder is directly transmitted to the dust removal air duct installed vertically on the top of the vibrating feeder. Over time, the weld of the dust removal air duct will rupture, causing equipment failure and shutdown.

[0003] According to the patent document: CN206184520U, a vibrating feeder for coal transportation is disclosed, which includes a support seat, a material chute is installed on the top of the support seat, and elastic vibration support mechanisms are installed at the four corners of the material chute. A crossbeam is installed on the top of the elastic vibration support mechanism, and a vibration frame is installed on the crossbeam. A crushing motor and a crushing box are installed on the vibration frame. The crushing motor is connected to a crushing device installed inside the crushing box through a belt transmission mechanism and drives it to crush coal blocks. This vibrating feeder can effectively crush coal blocks, improve its crushing efficiency, and facilitate its subsequent transportation.

[0004] When the vibrating feeder is working, the vibration force generated by its exciter makes the trough vibrate at a specific frequency and amplitude, thereby pushing the coke in the trough forward. By adjusting the speed of the variable frequency speed regulating motor through the frequency converter, the vibration frequency of the exciter can be adjusted, and then the coke discharge amount can be adjusted steplessly. The main function of the vibrating feeder is to complete the coke transportation through vibration, but this function often causes the weld of the dust removal air duct on its upper part to rupture. Summary of the invention

[0005] The object of the present invention is to provide an anti-vibration and wear-resistant connection device for the dust removal duct of a vibrating feeder, so as to solve the problem proposed in the prior art that when the vibrating feeder is working, the vibration force generated by its exciter makes the material trough vibrate at a specific frequency and amplitude, thereby pushing the coke in the material trough forward. By adjusting the speed of the variable frequency speed regulation motor through the frequency converter, the vibration frequency of the exciter can be adjusted, and then the coke discharge amount can be adjusted steplessly. The main function of the vibrating feeder is to complete the coke transportation by vibration, but this function often leads to the problem of rupture of the weld of the dust removal duct on its upper part.

[0006] To achieve the above object, the present invention provides the following technical solution: a vibration-resistant and wear-resistant connection device for a dust removal air duct of a vibrating feeder, comprising a connection flange, a flexible rubber shell is fixedly connected to the inner side of the connection flange, and a protective cover is fixedly connected to the top and bottom of the connection flange respectively;

[0007] The connecting flange comprises an intermediate sleeve, and the top and the bottom of the outer wall of the intermediate sleeve are respectively slidably connected with sealing mechanisms.

[0008] Preferably, the intermediate sleeve includes a sleeve body, the top and bottom of the outer wall of the sleeve body are respectively fixedly connected with connecting ports, the outer walls of the two connecting ports are fixedly connected with connecting flanges, and the opposite surfaces of the two connecting flanges are respectively fixedly connected to the top and bottom of the flexible rubber shell. The sealing and stability of the connecting flange are ensured by the close combination of the connecting flange and the flexible rubber shell. The flexible rubber shell can adapt to the vibration generated during the operation of the vibrating feeder, thereby effectively reducing the risk of weld rupture.

[0009] Preferably, the tops of the two connecting flanges are provided with a plurality of slide grooves extending to the inside in a circular array, and the two connecting flanges are provided with a plurality of push-pull round rod slide grooves in a circular array. The two groups of push-pull round rod slide grooves are connected with the two groups of slide grooves. The push-pull round rod slide grooves opened on the connecting flanges are connected with the slide grooves, so that the push-pull round rod can slide freely in the slide grooves.

[0010] Preferably, the two sealing mechanisms include sliding plates, both sides of the outer walls of the two sliding plates are fixedly connected with connecting rods, the opposite surfaces of the two groups of connecting rods are fixedly connected with sealing assemblies, the inner walls of the two sliding plates are respectively slidably connected to the top and bottom of the outer wall of the casing body, and both sides of the opposite surfaces of the two sliding plates are respectively fixedly connected with hydraulic push-pull rods, and the sliding plates are controlled by the hydraulic push-pull rods to slide between the top and bottom of the outer wall of the casing body, thereby achieving a tight fit of the sealing mechanism and ensuring the sealing performance of the connecting flange.

[0011] Preferably, the two sealing components each include a polygonal connecting frame, the outer walls of the two polygonal connecting frames are fixedly connected with hinge blocks in a ring array, the inner walls of the two polygonal connecting frames are fixedly connected with connecting blocks, the four sides of the two connecting blocks are fixedly connected with connecting blocks, the two connecting blocks are fixedly connected to the inner walls of the polygonal connecting frames through the connecting blocks fixed on the four sides, a circular groove is opened in the middle of the two connecting blocks, and the two connecting blocks are slidably connected to the outer walls of the sleeve body away from the sliding disk on both sides through the circular groove opened in the middle, and the stability of the sealing assembly during the sliding process of the sliding disk is ensured by the fixed connection between the connecting block and the connecting block.

[0012] Preferably, the two groups of hinge blocks are rotatably connected to a rotating rod on one side away from the polygonal connecting frame, and the two groups of rotating rods are rotatably connected to a push-pull round rod on one side away from the hinge block. The two groups of push-pull round rods extend to the outer wall of the connecting flange through the slide groove and the push-pull round rod slide groove and are fixedly connected to the push-pull rod connecting block. Through the connection between the push-pull round rod and the push-pull rod connecting block, the push-pull round rod can slide freely in the slide groove, thereby pushing and pulling the push-pull rod connecting block to achieve precise control of the sealing mechanism.

[0013] Preferably, the inner sides of the two groups of push-pull rod connecting blocks away from the push-pull round rod are fixedly connected with push-pull rods. Through the connection of the push-pull rods, precise control of the sealing mechanism can be achieved to ensure that the sealing mechanism maintains good sealing performance during the operation of the vibrating feeder.

[0014] Preferably, the two groups of push-pull rods are fixedly connected with a sealing splint on one side away from the push-pull rod connecting block, and the two groups of sealing splints are fixedly connected with a splint slider on one side close to the connecting flange, and the two groups of splint sliders are slidably connected to the inner wall of the slide groove. The stability and sealing effect of the sealing mechanism can be further improved by the coordinated use of the sealing splint and the splint slider. The inner side of the sealing splint fits the outer wall of the dust removal air duct to ensure that when the vibrating feeder is running, the sealing splint can fit tightly on the surface of the dust removal air duct, thereby effectively preventing the leakage of dust and particulate matter.

[0015] Preferably, the two protective covers each include a cylindrical protective plate, the outer walls of the two cylindrical protective plates are rotatably connected to a second rotating rod in a circular array, and the two groups of the second rotating rods are rotatably connected to a second hinge block on the side away from the cylindrical protective plate. Through the rotation of the second hinge block, the protective cover can be flexibly extended and retracted to facilitate the protection of the outer wall of the dust removal duct, and when the entire device is disassembled, it is automatically stored to reduce occupied space and improve maintenance efficiency.

[0016] Preferably, the two groups of the second hinge blocks are fixedly connected to the side of the two groups of push-pull rods away from the connecting flange, and the outer walls of the two cylindrical protective plates close to the connecting flange are fitted with the inner sides of the two groups of sealing clamps. Through this design, the close fit between the protective cover and the sealing clamp ensures that the dust removal air duct is fully protected during the operation of the vibrating feeder, preventing the leakage of dust and particulate matter, and also reducing the problem of weld rupture caused by vibration.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present application effectively absorbs and isolates the vibration force generated by the operation of the vibrating feeder by providing a flexible rubber shell and a sealing mechanism, thereby avoiding the problem of cracking of the dust removal duct weld. At the same time, the sealing mechanism of the device can ensure that the dust removal duct maintains good sealing performance during the vibration process, prevents dust leakage, and improves the cleanliness of the production environment. Specifically, when connecting the dust removal duct of the vibrating feeder, first fix the connection port on the outer wall of the duct, operate the hydraulic push-pull rod to shrink them, drive the sliding plate to move inward along the sleeve, and then pull the connecting rod and the polygonal connecting frame to move inward, and the hinged block on the connecting frame rotates the rotating rod to push the push-pull round rod to move in the slide groove, and synchronously drive the push-pull rod connecting block and the push-pull rod. This linkage mechanism ensures that the sealing splint is closely attached to the outer wall of the duct to achieve a sealed connection. This operation ensures the tightness and sealing of the connection, avoids dust overflow, and the buffering and shock absorption effect of the flexible rubber shell extends the service life of the equipment.

[0019] 2. The application makes the installation and disassembly of the device more convenient and improves the maintenance efficiency by setting the connection flange and the push-pull rod connection block. At the same time, the stability and reliability of the device during vibration are ensured by the cooperation of the sliding plate and the sealing clamping plate.

[0020] 3. The present application is provided with a protective cover design, which can not only protect the dust removal air duct from erosion by the external environment, but also effectively reduce the noise generated during the operation of the vibrating feeder, thereby improving the working environment. The use of the cylindrical protective plate further enhances the wear resistance of the device and extends its service life. Specifically, under the coordinated action of the push-pull rod, the cylindrical protective plate in the protective cover will move accordingly, the second rotating rod is connected to the protective plate, and the second hinge block is connected to the rotating rod. Therefore, when the push-pull rod moves, it will drive the second hinge block and the rotating rod to rotate, so that the protective plate is away from the connecting flange and shields the connection of the dust removal air duct. This design ensures the sealing of the connection part and improves the protection performance of the equipment, effectively preventing external debris or liquid from entering the interior of the equipment, and avoiding interference and damage to the operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main body three-dimensional structure of a vibration-resistant and wear-resistant connecting device for a dust removal air duct of a vibrating feeder according to the present invention;

[0022] Figure 2 It is a schematic diagram of a main body three-dimensional separated cross-sectional structure of a vibration-resistant and wear-resistant connecting device for a dust removal air duct of a vibrating feeder according to the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of a connecting flange and a flexible rubber shell of a vibration-resistant and wear-resistant connecting device for a dust removal air duct of a vibrating feeder according to the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of a connecting flange of a vibration-resistant and wear-resistant connecting device for a dust removal air duct of a vibrating feeder according to the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of an intermediate sleeve of an anti-vibration and wear-resistant connecting device for a dust removal air duct of a vibrating feeder according to the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of a sealing mechanism for a vibration-resistant and wear-resistant connecting device of a dust removal air duct of a vibrating feeder according to the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of a sealing assembly for a vibration-resistant and wear-resistant connecting device of a dust removal air duct of a vibrating feeder according to the present invention;

[0028] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a protective cover for an anti-vibration and wear-resistant connecting device of a dust removal air duct of a vibrating feeder.

[0029] Numbers in the figure: 1. connecting flange; 11. intermediate sleeve; 111. sleeve body; 112. connecting port; 113. connecting flange; 114. slide; 115. push-pull round rod slide; 12. sealing mechanism; 121. slide plate; 122. connecting rod; 123. hydraulic push-pull rod; 124. sealing assembly; 1241. polygonal connecting frame; 1242. connecting block; 1243. connecting block; 1244. round groove; 1245. hinge block; 1246. rotating rod; 1247. push-pull round rod; 1248. push-pull rod connecting block; 1249. push-pull rod; 1250. sealing splint; 1251. splint slider; 2. flexible rubber shell; 3. protective cover; 31. cylindrical protective plate; 32. second rotating rod; 33. second hinge block. DETAILED DESCRIPTION

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] Example: Figure 1 As shown, the present invention provides a technical solution for a vibration-resistant and wear-resistant connection device for a dust removal air duct of a vibrating feeder, comprising a connecting flange 1, a flexible rubber shell 2 is fixedly connected to the inner side of the connecting flange 1, and a protective cover 3 is fixedly connected to the top and bottom of the connecting flange 1 respectively.

[0032] See also Figure 2-7The connecting flange 1 includes an intermediate sleeve 11, and the top and bottom of the outer wall of the intermediate sleeve 11 are respectively slidably connected with a sealing mechanism 12. The intermediate sleeve 11 includes a sleeve body 111, and the top and bottom of the outer wall of the sleeve body 111 are respectively fixedly connected with a connecting port 112, and the outer walls of the two connecting ports 112 are fixedly connected with a connecting flange 113. The opposite surfaces of the two connecting flanges 113 are respectively fixedly connected to the top and bottom of the flexible rubber shell 2. The tops of the two connecting flanges 113 are respectively provided with a plurality of slide grooves 114 that penetrate to the inside in an annular array, and the annular arrays of the two connecting flanges 113 are provided with a plurality of push-pull round rod slide grooves 115. The two sets of push-pull The round rod slide grooves 115 are connected with the two groups of slide grooves 114, and the two sealing mechanisms 12 include sliding plates 121. The outer walls of the two sliding plates 121 are fixedly connected with connecting rods 122 on both sides, and the opposite surfaces of the two groups of connecting rods 122 are fixedly connected with sealing components 124. The inner walls of the two sliding plates 121 are respectively slidably connected to the top and bottom of the outer wall of the casing body 111. The two sides of the opposite surfaces of the two sliding plates 121 are respectively fixedly connected with hydraulic push-pull rods 123. The two sealing components 124 include polygonal connecting frames 1241. The outer walls of the two polygonal connecting frames 1241 are fixedly connected with hinge blocks 1245 in a circular array. The two polygonal connecting frames 1241 The inner wall of the two connecting blocks 1242 is fixedly connected with a connecting block 1243 on the four sides of the two connecting blocks 1242. The two connecting blocks 1242 are fixedly connected to the inner wall of the polygonal connecting frame 1241 through the connecting blocks 1243 fixed on the four sides. A circular groove 1244 is opened in the middle of the two connecting blocks 1242. The two connecting blocks 1242 are slidably connected to the outer wall of the sleeve body 111 away from the sliding disk 121 on both sides through the circular groove 1244 opened in the middle. The two sets of hinged blocks 1245 are rotatably connected to the rotating rod 1246 on the side away from the polygonal connecting frame 1241. The two sets of rotating rods 1246 are rotatably connected to the inner wall of the polygonal connecting frame 1241. A push-pull round rod 1247 is rotatably connected, and two groups of push-pull round rods 1247 extend to the outer wall of the connecting flange 113 through the slide groove 114 and the push-pull round rod slide groove 115 and are fixedly connected to a push-pull rod connecting block 1248. The inner side of the two groups of push-pull rod connecting blocks 1248 away from the push-pull round rod 1247 is fixedly connected to a push-pull rod 1249. The two groups of push-pull rods 1249 away from the push-pull rod connecting block 1248 are fixedly connected to a sealing splint 1250. The two groups of sealing splints 1250 are fixedly connected to a splint slider 1251 on the side close to the connecting flange 113. The two groups of splint sliders 1251 are slidably connected to the inner wall of the slide groove 114.

[0033] When connecting the dust removal duct of the vibrating feeder, it is first necessary to connect the connection port 112 to the outer wall of the dust removal duct. After the connection is completed, the two hydraulic push-pull rods 123 are operated to start and begin to retract inward. As the hydraulic push-pull rods 123 retract, the sliding plates 121 at both ends move inward on the outer wall of the sleeve body 111. When the two sliding plates 121 move inward, the connecting rod 122 fixed to the outer wall of the sliding plate 121 pulls the polygonal connection frame 1241 to move inward at the same time.

[0034] As the polygonal connection frame 1241 moves, the hinge block 1245 thereon will drive the rotating rod 1246 to rotate, and the rotation of the rotating rod 1246 will further pull the push-pull round rod 1247 to move along the slide groove 114 and the push-pull round rod slide groove 115. The movement of the push-pull round rod 1247 will drive the push-pull rod connection block 1248 and the push-pull rod 1249 to move synchronously. Finally, this linkage mechanism makes the sealing splint 1250 fit tightly against the outer wall of the dust removal air duct, thereby achieving a sealed connection. This series of operations ensures the tightness and sealing of the dust removal air duct connection of the vibrating feeder, provides a guarantee for the normal operation of the equipment, and prevents dust from overflowing due to insufficient sealing at the connection when the dust removal air duct is being removed. The flexible rubber shell 2 plays a role in buffering and shock absorption, effectively extending the service life of the equipment.

[0035] See also Figure 8 , the two protective covers 3 each include a cylindrical protective plate 31, the outer walls of the two cylindrical protective plates 31 are rotatably connected to the second rotating rods 32 in a circular array, the sides of the two groups of second rotating rods 32 away from the cylindrical protective plates 31 are rotatably connected to the second hinge blocks 33, the sides of the two groups of second hinge blocks 33 away from the second rotating rods 32 are fixedly connected to the sides of the two groups of push-pull rods 1249 away from the connecting flange 113, and the sides of the outer walls of the two cylindrical protective plates 31 close to the connecting flange 113 are in contact with the inner sides of the two groups of sealing clamps 1250;

[0036] At the same time, under the coordinated action of the multiple push-pull round rods 1247, by pulling the push-pull rod connecting block 1248, and then pushing the push-pull rod 1249 to move, the cylindrical protective plate 31 in the protective cover 3 will also move synchronously accordingly. Since the second rotating rod 32 is closely connected to the outer wall annular array of the cylindrical protective plate 31, and the second hinge block 33 is connected to the second rotating rod 32, when the push-pull rod 1249 moves, it will drive the second hinge block 33 to move together. This linkage effect further promotes the rotation of the second rotating rod 32.

[0037] As the rotation angle of the second rotating rod 32 changes, the cylindrical protective plate 31 will move away from the connecting flange 113, thereby effectively shielding the outer wall area near the connection between the dust removal air duct and the device. This design not only ensures the sealing of the connection part, but also further improves the protection performance of the equipment. In this way, it effectively prevents external debris or liquids from entering the interior of the equipment, thereby avoiding possible interference and damage to the normal operation of the equipment.

[0038] Working principle: When connecting the dust removal duct of the vibrating feeder, first, the connection port 112 needs to be connected to the outer wall of the dust removal duct. After the connection is completed, the two hydraulic push-pull rods 123 are operated to start and begin to retract inward. As the hydraulic push-pull rods 123 retract, the sliding plates 121 at both ends move inward on the outer wall of the sleeve body 111. When the two sliding plates 121 move inward, the polygonal connection frame 112 is pulled by the connecting rod 122 fixed to the outer wall of the sliding plate 121. 241 moves inward at the same time. With the movement of the polygonal connection frame 1241, the hinge block 1245 thereon will drive the rotating rod 1246 to rotate. The rotation of the rotating rod 1246 will further pull the push-pull round rod 1247 to move along the slide groove 114 and the push-pull round rod slide groove 115. The movement of the push-pull round rod 1247 will drive the push-pull rod connection block 1248 and the push-pull rod 1249 to move synchronously. Finally, this linkage mechanism makes the sealing splint 1250 fit tightly against the outer wall of the dust removal air duct, thereby achieving a sealed connection. This series of operations ensures the tightness and sealing of the connection of the dust removal air duct of the vibrating feeder, provides a guarantee for the normal operation of the equipment, and prevents dust from overflowing due to insufficient sealing at the connection when the dust removal air duct is being removed. The flexible rubber shell 2 plays a role in buffering and shock absorption, effectively extending the service life of the equipment.

[0039] At the same time, under the coordinated action of multiple push-pull round rods 1247, by pulling the push-pull rod connecting block 1248 and then pushing the push-pull rod 1249 to move, the cylindrical protective plate 31 in the protective cover 3 will also move synchronously. Since the second rotating rod 32 is closely connected to the outer wall annular array of the cylindrical protective plate 31, and the second hinge block 33 is connected to the second rotating rod 32, when the push-pull rod 1249 moves, it will drive the second hinge block 33 to move together. This linkage effect further prompts the second rotating rod 32 to rotate. As the rotation angle of the second rotating rod 32 changes, the cylindrical protective plate 31 will move away from the connecting flange 113, thereby effectively blocking the outer wall area near the connection between the dust removal air duct and the device. This design not only ensures the sealing of the connection part, but also further improves the protection performance of the equipment. In this way, external debris or liquids are effectively prevented from entering the interior of the equipment, thereby avoiding possible interference and damage to the normal operation of the equipment.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A vibration-resistant and wear-resistant connecting device for a dust removal air duct of a vibrating feeder, characterized in that: It comprises a connecting flange (1), the inner side of which is fixedly connected to a flexible rubber shell (2), and the top and bottom of the connecting flange (1) are respectively fixedly connected to a protective cover (3); The connecting flange (1) comprises an intermediate sleeve (11), and the top and bottom of the outer wall of the intermediate sleeve (11) are respectively slidably connected with sealing mechanisms (12).

2. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 1, characterized in that: The intermediate sleeve (11) comprises a sleeve body (111), the top and bottom of the outer wall of the sleeve body (111) are respectively fixedly connected with connection ports (112), the outer walls of the two connection ports (112) are both fixedly connected with connection flanges (113), and the opposite surfaces of the two connection flanges (113) are respectively fixedly connected to the top and bottom of the flexible rubber housing (2).

3. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 2, characterized in that: The tops of the two connecting flanges (113) are provided with a plurality of slide grooves (114) extending to the inside in an annular array, and the annular arrays of the two connecting flanges (113) are provided with a plurality of push-pull round rod slide grooves (115), and the two groups of push-pull round rod slide grooves (115) are both connected to the two groups of slide grooves (114).

4. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 1, characterized in that: The two sealing mechanisms (12) each comprise a sliding plate (121), both sides of the outer walls of the two sliding plates (121) are fixedly connected with connecting rods (122), the opposite surfaces of the two groups of connecting rods (122) are fixedly connected with sealing assemblies (124), the inner walls of the two sliding plates (121) are respectively slidably connected to the top and bottom of the outer wall of the sleeve body (111), and both sides of the opposite surfaces of the two sliding plates (121) are respectively fixedly connected with hydraulic push-pull rods (123).

5. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 4, characterized in that: The two sealing assemblies (124) each comprise a polygonal connection frame (1241); the outer walls of the two polygonal connection frames (1241) are fixedly connected with hinge blocks (1245) in a circular array; the inner walls of the two polygonal connection frames (1241) are fixedly connected with connection blocks (1242); the four sides of the two connection blocks (1242) are fixedly connected with connection blocks (1243); the two connection blocks (1242) are fixedly connected to the inner wall of the polygonal connection frame (1241) through the connection blocks (1243) fixed on the four sides; a circular groove (1244) is provided in the middle of the two connection blocks (1242); the two connection blocks (1242) are slidably connected to the outer wall of the sleeve body (111) away from the sliding disk (121) on both sides through the circular groove (1244) provided in the middle.

6. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 5, characterized in that: The two groups of hinge blocks (1245) are rotatably connected to a rotating rod (1246) on one side away from the polygonal connecting frame (1241), and the two groups of rotating rods (1246) are rotatably connected to a push-pull round rod (1247) on one side away from the hinge blocks (1245). The two groups of push-pull round rods (1247) extend to the outer wall of the connecting flange (113) through the slide groove (114) and the push-pull round rod slide groove (115) and are fixedly connected to the push-pull rod connecting block (1248).

7. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 6, characterized in that: The inner sides of the two groups of push-pull rod connection blocks (1248) away from the push-pull round rod (1247) are both fixedly connected with push-pull rods (1249).

8. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 7, characterized in that: The two groups of push-pull rods (1249) are fixedly connected to a sealing clamp (1250) on one side away from the push-pull rod connecting block (1248), and the two groups of sealing clamps (1250) are fixedly connected to a clamp slider (1251) on one side close to the connecting flange (113), and the two groups of clamp sliders (1251) are slidably connected to the inner wall of the slide groove (114).

9. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 1, characterized in that: The two protective covers (3) each comprise a cylindrical protective plate (31), the outer walls of the two cylindrical protective plates (31) are rotatably connected to second rotating rods (32) in a circular array, and the sides of the two groups of the second rotating rods (32) away from the cylindrical protective plate (31) are rotatably connected to second hinge blocks (33).

10. The anti-vibration and wear-resistant connecting device for the dust removal air duct of a vibrating feeder according to claim 9, characterized in that: The side of the two groups of the second hinge blocks (33) away from the second rotating rod (32) is fixedly connected to the side of the two groups of push-pull rods (1249) away from the connecting flange (113), and the outer walls of the two cylindrical protective plates (31) close to the connecting flange (113) are fitted with the inner sides of the two groups of sealing clamps (1250).

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