A rotary valve for a dust collector

Abstract

This utility model relates to the technical field of rotary valves and discloses a rotary valve for dust collectors, including an upper mounting plate and a lower mounting plate: a housing is fixed to the inner side of the upper and lower mounting plates. This rotary valve for dust collectors, by installing a screen on top of the impeller, blocks hard lumps such as welding slag, stones, and metal shavings mixed in with industrial dust, thus preventing impurities from getting stuck in the precise gap between the impeller and the housing, ensuring the normal rotation of the impeller. Simultaneously, the fixing mechanism allows for convenient installation and removal of the screen. When the screen becomes clogged or worn after prolonged use, the user can release the limiting position of the fixing mechanism's pull plate, pull the plate to move the screen inside the sealing groove, and conveniently pull the screen out from inside the housing for cleaning or replacement, improving the practicality of the rotary valve for dust collectors.

Description

Technical Field

[0001] This utility model relates to the field of rotary valve technology, and in particular to a rotary valve for a dust collector. Background Technology

[0002] A rotary valve is installed at the discharge port of a rotary valve operating under negative pressure. The upper part receives the material discharged from the rotary valve, and the rotating impeller serves to convey the material while also acting as a seal to prevent air from being drawn in through the discharge port during pneumatic conveying, ensuring normal material discharge. As a special type of unloading equipment, it plays a significant role in cleaning and rinsing operations and is commonly used in dust removal systems. As one of the important pieces of equipment in dust removal systems, it is particularly suitable for dust and small particulate materials.

[0003] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: In the operation of existing rotary valves for dust collectors, due to the presence of hard blocky objects such as welding slag, stones, and metal shavings mixed in with industrial dust, these impurities are easily stuck in the precision gap between the impeller and the casing, causing the impeller to be obstructed from rotating, which can easily lead to motor overload or even burnout. This not only damages the equipment but also interrupts the production process due to shutdown for maintenance. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of frequent failures caused by impurities clogging the rotary valve for dust collectors during operation. Therefore, we propose a rotary valve for dust collectors.

[0005] To achieve the above objectives, this application adopts the following technical solution: a star-shaped unloader for a dust collector, comprising an upper mounting plate and a lower mounting plate; a housing is fixed to the inner side of the upper mounting plate and the lower mounting plate; a connecting plate is fixed to one end of the housing; a motor is mounted to the other end of the connecting plate; a shaft is fixed to the output end of the motor; an impeller is provided on the surface of the shaft; a shaft seat is rotatably provided at the other end of the shaft; a sealing plate is provided at the other end of the housing; the outer surface of the shaft seat is fixed to the sealing plate by a connecting rod; a screen is provided on the inner side of the housing above the impeller; a pull plate is fixed to one end of the screen outside the housing; and a fixing mechanism is provided on one side of the housing for fixing the position of the pull plate.

[0006] Preferably, the fixing mechanism includes a fixing plate fixed to one side of the housing, a fixing rod sliding inside the fixing plate, and a fixing groove matching the fixing rod on the surface of the pull plate.

[0007] Preferably, a disc is fixed to the surface of the fixing rod, and a spring is sleeved on the surface of the fixing rod. One end of the spring is fixed to the disc, and the other end of the spring is fixed to the fixing plate.

[0008] Preferably, the fixed plate has a rotatable limit rod inside, one end of the limit rod is fixed to a limit block, and one end of the limit block abuts against one side of the disc.

[0009] Preferably, two limiting rings are fixedly sleeved on the surface of the limiting rod, and the two limiting rings are respectively located on both sides of the fixing plate.

[0010] Preferably, the housing has a sealing groove inside, and the screen slides inside the sealing groove.

[0011] Preferably, a sealing gasket is provided at the connection between the sealing disc and the housing.

[0012] The technical effects and advantages of this utility model are as follows: In this invention, by installing a screen on the top of the impeller, when hard lumps such as welding slag, stones, and metal shavings are mixed in with industrial dust, these impurities will be blocked by the screen, thus preventing them from getting stuck in the precision gap between the impeller and the housing, ensuring the normal rotation of the impeller. At the same time, the setting of the fixing mechanism allows for convenient installation and removal of the screen. When the screen becomes clogged or worn after long-term use, the user can release the limiting position of the fixing mechanism on the pull plate, pull the pull plate to make the screen slide inside the sealing groove, and thus conveniently pull the screen out from the inside of the housing for cleaning or replacement, improving the practicality of the rotary valve for dust collectors. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the shell of this utility model; Figure 3 This is a schematic diagram of the screen structure of this utility model; Figure 4 This is a schematic diagram of the fixing mechanism of this utility model.

[0014] Legend: 1. Upper mounting plate; 2. Lower mounting plate; 3. Housing; 4. Connecting disc; 5. Motor; 6. Shaft; 7. Shaft seat; 8. Impeller; 9. Sealing disc; 10. Screen; 11. Pull plate; 12. Fixing plate; 13. Fixing rod; 14. Fixing groove; 15. Disc; 16. Spring; 17. Limiting rod; 18. Limiting block; 19. Limiting ring; 20. Sealing groove; 21. Sealing gasket. Detailed Implementation

[0015] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0016] Reference Figure 1 - Figure 4 As shown, this utility model provides a technical solution: a star-shaped unloader for a dust collector, including an upper mounting plate 1 and a lower mounting plate 2; a housing 3 is fixed to the inner side of the upper mounting plate 1 and the lower mounting plate 2; a connecting plate 4 is fixed to one end of the housing 3; a motor 5 is installed at the other end of the connecting plate 4; a shaft 6 is fixed to the output end of the motor 5; an impeller 8 is provided on the surface of the shaft 6; a shaft seat 7 is rotatably provided at the other end of the shaft 6; a sealing plate 9 is provided at the other end of the housing 3; the outer surface of the shaft seat 7 is fixed to the sealing plate 9 by a connecting rod; a screen 10 is provided on the inner side of the housing 3 above the impeller 8; a pull plate 11 is fixed to one end of the screen 10 outside the housing 3; and a fixing mechanism for fixing the position of the pull plate 11 is provided on one side of the housing 3. Specifically, by installing a screen 10 on top of the impeller 8, when hard lumps such as welding slag, stones, and metal shavings are mixed in with industrial dust, these impurities will be blocked by the screen 10, thus preventing impurities from getting stuck in the precision gap between the impeller 8 and the housing 3, ensuring the normal rotation of the impeller 8. At the same time, the setting of the fixing mechanism allows for convenient installation and removal of the screen 10. When the screen 10 becomes clogged or worn after long-term use, the user can release the limiting position of the fixing mechanism on the pull plate 11, pull the pull plate 11 to make the screen 10 slide inside the sealing groove 20, thereby conveniently pulling the screen 10 out of the housing 3 for cleaning or replacement, improving the practicality of the rotary valve for dust collectors.

[0017] Reference Figure 4 As shown, in this embodiment: the fixing mechanism includes a fixing plate 12 fixed to one side of the housing 3, a fixing rod 13 sliding inside the fixing plate 12, a fixing groove 14 matching the fixing rod 13 is opened on the surface of the pull plate 11, a disc 15 is fixed on the surface of the fixing rod 13, a spring 16 is sleeved on the surface of the fixing rod 13, one end of the spring 16 is fixed to the disc 15, the other end of the spring 16 is fixed to the fixing plate 12, a limit rod 17 is rotatably connected inside the fixing plate 12, a limit block 18 is fixed to one end of the limit rod 17, and one end of the limit block 18 abuts against one side of the disc 15; Specifically: The fixing mechanism ensures that the screen 10 is securely installed inside the housing 3. When the screen 10 needs to be disassembled, the user can rotate the limiting rod 17, causing one end of the limiting block 18 to disengage from one side of the disc 15. At this point, the fixing rod 13 can be pulled to slide inside the fixing plate 12 until one end of the fixing rod 13 disengages from the fixing groove 14. Then, the user can pull the pulling plate 11 to remove the screen 10 from inside the housing 3. After cleaning or replacing the screen 10, the user can... One end of the screen 10 is reinserted into the upper mounting plate 1, and the pull plate 11 is pushed so that the fixing groove 14 is aligned with one end of the fixing rod 13 again. Then, the fixing rod 13 is pushed into the fixing groove 14. At this time, the user rotates the limiting rod 17 again so that one end of the limiting block 18 abuts against one side of the disc 15 again, limiting the position of the disc 15, thereby fixing the screen 10. This design not only improves the ease of installation of the screen 10, but also improves the ease of disassembly of the screen 10.

[0018] Reference Figure 4 As shown in this embodiment: two limiting rings 19 are fixedly sleeved on the surface of the limiting rod 17, and the two limiting rings 19 are respectively located on both sides of the fixing plate 12; Specifically, the setting of the limiting ring 19 limits the rotation range of the limiting rod 17, preventing the limiting rod 17 from detaching from the interior of the fixing plate 12 during rotation, thus improving the stability of the limiting rod 17 in use.

[0019] Reference Figure 3 As shown in this embodiment: a sealing groove 20 is provided inside the housing 3, and the screen 10 slides inside the sealing groove 20; Specifically, the sealing groove 20 limits the sliding trajectory of the screen 10, preventing the screen 10 from deviating during sliding and improving the stability of the screen 10's sliding.

[0020] Reference Figure 3 As shown in this embodiment: a sealing gasket 21 is provided at the connection between the sealing disc 9 and the housing 3; Specifically, by setting the sealing gasket 21, the sealing performance at the connection between the sealing disc 9 and the housing 3 is improved, preventing dust from seeping out from the connection between the sealing disc 9 and the housing 3, and ensuring the normal use of the rotary valve for the dust collector.

[0021] Working Principle: The user discharges industrial dust from the dust collector's discharge port into the rotary valve, starts motor 5, and the output end of motor 5 drives shaft 6 to rotate. Shaft 6 drives impeller 8 to rotate, and the rotation of impeller 8 generates centrifugal force, causing the industrial dust to move along the inner wall of housing 3 and finally be discharged from the discharge port. When the industrial dust is mixed with hard lumps such as welding slag, stones, and metal shavings, these impurities will be blocked by screen 10, preventing impurities from getting stuck in the precision gap between impeller 8 and housing 3, ensuring the normal rotation of impeller 8. When screen 10 becomes clogged or worn after long-term use, the user can rotate limit rod 17 to disengage one end of limit block 18 from disc 1. On one side of 5, pull the fixing rod 13 so that one end of the fixing rod 13 is disengaged from the inside of the fixing groove 14. Then pull the pull plate 11, which causes the screen 10 to slide inside the sealing groove 20, thereby easily pulling the screen 10 out of the inside of the housing 3 for cleaning or replacement. After cleaning or replacement, reinsert one end of the screen 10 into the inside of the housing 3, push the pull plate 11 so that the fixing groove 14 is aligned with one end of the fixing rod 13 again, push the fixing rod 13 into the inside of the fixing groove 14, and rotate the limiting rod 17 again so that one end of the limiting block 18 abuts against one side of the disc 15 again, limiting the position of the disc 15, thereby fixing the screen 10.

[0022] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A star-type unloader for a dust collector comprising an upper mounting plate (1) and a lower mounting plate (2): characterized in that, The upper mounting plate (1) and the lower mounting plate (2) are fixed with a housing (3). A connecting plate (4) is fixed at one end of the housing (3). A motor (5) is installed at the other end of the connecting plate (4). A shaft (6) is fixed at the output end of the motor (5). An impeller (8) is provided on the surface of the shaft (6). A shaft seat (7) is rotatably provided at the other end of the shaft (6). A sealing plate (9) is provided at the other end of the housing (3). The outer surface of the shaft seat (7) is fixed to the sealing plate (9) by a connecting rod. A screen (10) is provided on the inner side of the housing (3) above the impeller (8). A pull plate (11) is fixed at one end of the screen (10) outside the housing (3). A fixing mechanism for fixing the position of the pull plate (11) is provided on one side of the housing (3).

2. A star-type discharger for a dust collector according to claim 1, characterized in that: The fixing mechanism includes a fixing plate (12) fixed to one side of the housing (3), a fixing rod (13) sliding inside the fixing plate (12), and a fixing groove (14) matching the fixing rod (13) on the surface of the pull plate (11).

3. A star-type discharger for a dust collector according to claim 2, characterized in that: A disc (15) is fixed to the surface of the fixing rod (13), and a spring (16) is sleeved on the surface of the fixing rod (13). One end of the spring (16) is fixed to the disc (15), and the other end of the spring (16) is fixed to the fixing plate (12).

4. A rotary valve for a dust collector according to claim 2, characterized in that: The fixed plate (12) is internally connected to a limiting rod (17), one end of which is fixed to a limiting block (18), and one end of the limiting block (18) abuts against one side of the disc (15).

5. A rotary valve for a dust collector according to claim 4, characterized in that: The surface of the limiting rod (17) is fixedly fitted with two limiting rings (19), which are located on both sides of the fixing plate (12).

6. A rotary valve for a dust collector according to claim 1, characterized in that: The housing (3) has a sealing groove (20) inside, and the screen (10) slides inside the sealing groove (20).

7. A rotary valve for a dust collector according to claim 1, characterized in that: A sealing gasket (21) is provided at the connection between the sealing disc (9) and the housing (3).

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