A bellows-sealed gear-type rotary valve

Abstract

The utility model provides a kind of gear type rotary valve sealed by corrugated pipe, comprising: valve body, the valve body is equipped with valve core, valve seat is equipped between the valve body and valve core, valve seat is encapsulated in valve body by outside flange, the upper end of the valve body is equipped with valve cylinder, the valve cylinder is equipped with valve rod, the lower part of the valve rod is inserted into the recess of valve core, the upper part of the upper end of the valve rod is connected with cylindrical gear, cylindrical gear side is equipped with cylindrical rack, cylindrical gear is engaged with cylindrical rack, disc is welded on cylindrical rack, disc and gear rotating mechanism seal shell are connected by corrugated pipe, the output end of air cylinder is connected with disc, the cylinder body of air cylinder is installed on air cylinder fixed support.The utility model does not affect the opening and closing of valve, sealing packing adopts corrugated pipe sealing, effectively reduce the risk of medium leakage, and practical performance is excellent.

Description

Technical Field

[0001] This utility model relates to the field of control valve technology, specifically to a bellows-sealed gear-type rotary valve. Background Technology

[0002] Rotary valves are specialized devices used in solid material (powder, granular materials, powder-granular mixtures) conveying systems for unloading, packaging, mixing, dust removal, metering, and quantitative conveying. Their working principle involves a motor and reducer driving an impeller with a bisecting structure to rotate within the housing. Material from the upper hopper or feeding device fills the impeller's cavity, and as the impeller rotates, it is discharged from the lower part of the housing. This allows for uniform and continuous downstream unloading according to the requirements of the conveying system. However, the valve body and seat seal is a sliding seal, and using packing makes it difficult to achieve zero leakage. Summary of the Invention

[0003] The technical problem solved by this utility model is to provide a bellows-sealed gear-type rotary valve to solve the problems mentioned in the background art.

[0004] The technical problem solved by this utility model is achieved by the following technical solution: A bellows-sealed gear-type rotary valve, comprising: a valve body, a valve core disposed within the valve body, a valve seat disposed between the valve body and the valve core, the valve seat being encapsulated within the valve body via an external flange I, a valve cylinder disposed at the upper end of the valve body, a valve stem disposed within the valve cylinder, the lower part of the valve stem being inserted into the groove of the valve core, the upper part of the upper end of the valve stem being connected to a cylindrical gear, a cylindrical rack disposed on one side of the cylindrical gear, the cylindrical gear meshing with the cylindrical rack, a disc welded onto the cylindrical rack, the disc being connected to the sealing shell of the gear rotation mechanism by a bellows, the output end of a cylinder being connected to the disc, and the cylinder body being mounted on a cylinder fixing bracket.

[0005] Furthermore, the valve body is provided with external flanges I at both ends, an access pipe is provided on the outside of the external flanges I, an external flange II is provided at the outer end of the access pipe, and a number of connecting screw holes are provided on the external flange II.

[0006] Furthermore, a connecting flange is provided between the sealing housing of the gear rotation mechanism and the valve cylinder, and the connecting flange is installed between the sealing housing of the gear rotation mechanism and the valve cylinder by fixing bolts.

[0007] Furthermore, valve cylinder connecting plates are provided at both ends of the valve cylinder, and the valve cylinder connecting plates are provided with a plurality of connecting screw holes.

[0008] Furthermore, the valve body is provided with several connecting screw holes, and the external flange I is installed in the connecting screw holes on the valve body by fixing bolts.

[0009] Furthermore, a rotary support bushing is provided between the valve stem and the valve cylinder, and the rotary support bushing is installed in a bushing mounting groove on the valve cylinder.

[0010] Furthermore, the sealing housing of the gear rotation mechanism is installed on top of the central hole of the valve cylinder.

[0011] Compared with the prior art, the advantages of this utility model are: the utility model does not affect the opening and closing of the valve, the sealing packing adopts bellows sealing, which effectively reduces the risk of media leakage and has excellent practical performance. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the structure of this utility model.

[0014] Figure 3 for Figure 2 A schematic diagram of the centerline cross-section.

[0015] Figure 4 This is a top view schematic diagram of the present invention. Detailed Implementation

[0016] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection between the internal parts of two components. Example

[0017] like Figures 1-4As shown, a bellows-sealed gear-type rotary valve includes: a valve body 10, a valve core 12 inside the valve body 10, a valve seat 14 between the valve body 10 and the valve core 12, the valve seat 14 being encapsulated within the valve body 10 via an external flange 111, a valve cylinder 9 at the upper end of the valve body 10, a valve stem 7 inside the valve cylinder 9, the lower part of the valve stem 7 being inserted into a groove in the valve core 12, the upper part of the upper end of the valve stem 7 being connected to a cylindrical gear 6, a cylindrical rack 5 on one side of the cylindrical gear 6, the cylindrical gear 6 meshing with the cylindrical rack 5, a disc 16 welded onto the cylindrical rack 5, the disc 16 being connected to the gear rotation mechanism sealing shell 4 via a bellows 2, the output end of a cylinder 1 being connected to the disc 16, and the cylinder body of the cylinder 1 being mounted on a cylinder fixing bracket 3. The valve body 10 is provided with external flanges I11 at both ends. An access pipe is provided on the outside of the external flanges I11. An external flange II15 is provided at the outer end of the access pipe. Several connecting screw holes are provided on the external flange II15. Example

[0018] like Figures 1-4 As shown, a bellows-sealed gear-type rotary valve includes: a valve body 10, a valve core 12 inside the valve body 10, a valve seat 14 between the valve body 10 and the valve core 12, the valve seat 14 being encapsulated within the valve body 10 via an external flange 111, a valve cylinder 9 at the upper end of the valve body 10, a valve stem 7 inside the valve cylinder 9, the lower part of the valve stem 7 being inserted into a groove in the valve core 12, the upper part of the upper end of the valve stem 7 being connected to a cylindrical gear 6, a cylindrical rack 5 on one side of the cylindrical gear 6, the cylindrical gear 6 meshing with the cylindrical rack 5, a disc 16 welded to the cylindrical rack 5, the disc 16 being connected to a gear rotation mechanism sealing housing 4 via a bellows 2, the output end of a cylinder 1 being connected to the disc 16, and the cylinder body of the cylinder 1 being mounted on a cylinder fixing bracket 3. A connecting flange 8 is provided between the gear rotation mechanism sealing housing 4 and the valve cylinder 9, the connecting flange 8 being installed between the gear rotation mechanism sealing housing 4 and the valve cylinder 9 via fixing bolts. Example

[0019] like Figures 1-4As shown, a bellows-sealed gear-type rotary valve includes: a valve body 10, a valve core 12 inside the valve body 10, a valve seat 14 between the valve body 10 and the valve core 12, the valve seat 14 being encapsulated within the valve body 10 via an external flange 111, a valve cylinder 9 at the upper end of the valve body 10, a valve stem 7 inside the valve cylinder 9, the lower part of the valve stem 7 being inserted into a groove in the valve core 12, the upper part of the upper end of the valve stem 7 being connected to a cylindrical gear 6, a cylindrical rack 5 on one side of the cylindrical gear 6, the cylindrical gear 6 meshing with the cylindrical rack 5, a disc 16 welded to the cylindrical rack 5, the disc 16 being connected to the gear rotation mechanism sealing shell 4 via a bellows 2, the output end of a cylinder 1 being connected to the disc 16, and the cylinder body of the cylinder 1 being mounted on a cylinder fixing bracket 3. Valve cylinder connecting plates are provided at both ends of the valve cylinder 9, and the valve cylinder connecting plates are provided with several connecting screw holes. Example

[0020] like Figures 1-4 As shown, a bellows-sealed gear-type rotary valve includes: a valve body 10, a valve core 12 inside the valve body 10, a valve seat 14 between the valve body 10 and the valve core 12, the valve seat 14 being encapsulated within the valve body 10 via an external flange 111, a valve cylinder 9 at the upper end of the valve body 10, a valve stem 7 inside the valve cylinder 9, the lower part of the valve stem 7 being inserted into a groove in the valve core 12, the upper part of the upper end of the valve stem 7 being connected to a cylindrical gear 6, a cylindrical rack 5 on one side of the cylindrical gear 6, the cylindrical gear 6 meshing with the cylindrical rack 5, a disc 16 welded to the cylindrical rack 5, the disc 16 being connected to the gear rotation mechanism sealing shell 4 via a bellows 2, the output end of a cylinder 1 being connected to the disc 16, and the cylinder body of the cylinder 1 being mounted on a cylinder fixing bracket 3. The valve body 10 has several connecting screw holes, and the external flange 11 is mounted in the connecting screw holes on the valve body 10 via fixing bolts. Example

[0021] like Figures 1-4 As shown, a bellows-sealed gear-type rotary valve includes: a valve body 10, a valve core 12 inside the valve body 10, a valve seat 14 between the valve body 10 and the valve core 12, the valve seat 14 being encapsulated within the valve body 10 via an external flange 111, a valve cylinder 9 at the upper end of the valve body 10, a valve stem 7 inside the valve cylinder 9, the lower part of the valve stem 7 being inserted into a groove in the valve core 12, the upper part of the upper end of the valve stem 7 being connected to a cylindrical gear 6, a cylindrical rack 5 on one side of the cylindrical gear 6, the cylindrical gear 6 meshing with the cylindrical rack 5, a disc 16 welded to the cylindrical rack 5, the disc 16 being connected to the gear rotation mechanism sealing shell 4 via a bellows 2, the output end of a cylinder 1 being connected to the disc 16, and the cylinder body of the cylinder 1 being mounted on a cylinder fixing bracket 3. A rotary support bushing is provided between the valve stem 7 and the valve cylinder 9, the rotary support bushing being installed in a bushing mounting groove on the valve cylinder 9. Example

[0022] like Figures 1-4 As shown, a bellows-sealed gear-type rotary valve includes: a valve body 10, a valve core 12 inside the valve body 10, a valve seat 14 between the valve body 10 and the valve core 12, the valve seat 14 being encapsulated within the valve body 10 via an external flange 111, a valve cylinder 9 at the upper end of the valve body 10, a valve stem 7 inside the valve cylinder 9, the lower part of the valve stem 7 being inserted into a groove in the valve core 12, the upper part of the upper end of the valve stem 7 being connected to a cylindrical gear 6, a cylindrical rack 5 on one side of the cylindrical gear 6, the cylindrical gear 6 meshing with the cylindrical rack 5, a disc 16 welded to the cylindrical rack 5, the disc 16 being connected to a gear rotation mechanism sealing shell 4 via a bellows 2, the output end of a cylinder 1 being connected to the disc 16, and the cylinder body of the cylinder 1 being mounted on a cylinder fixing bracket 3. The gear rotation mechanism sealing shell 4 is mounted on the top of the center hole of the valve cylinder 9.

[0023] The valve body 10 of this utility model contains a valve core 12, and a valve seat 14 is provided between the valve body 10 and the valve core 12. The valve seat 14 is encapsulated in the valve body 10 through an external flange I11. A valve cylinder 9 is provided at the upper end of the valve body 10, and a valve stem 7 is provided inside the valve cylinder 9. The lower part of the valve stem 7 is inserted into the groove of the valve core 12, and the upper part of the upper end of the valve stem 7 is connected to a cylindrical gear 6. A cylindrical rack 5 is provided on one side of the cylindrical gear 6, and the cylindrical gear 6 meshes with the cylindrical rack 5. A disc 16 is welded on the cylindrical rack 5, and the disc 16 is connected to the gear rotation mechanism sealing shell 4 by a bellows 2. The output end of the cylinder 1 is connected to the disc 16, and the cylinder body of the cylinder 1 is mounted on a cylinder fixing bracket 3. The sealing packing adopts a bellows seal, which effectively reduces the risk of media leakage and has excellent practical performance.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bellows-sealed gear-type rotary valve, comprising: A valve body (10) is characterized in that: a valve core (12) is provided inside the valve body (10), a valve seat (14) is provided between the valve body (10) and the valve core (12), the valve seat (14) is encapsulated inside the valve body (10) by an external flange I (11), a valve cylinder (9) is provided at the upper end of the valve body (10), a valve stem (7) is provided inside the valve cylinder (9), and the lower part of the valve stem (7) is inserted into the groove of the valve core (12). (7) The upper part of the upper end is connected to the cylindrical gear (6). A cylindrical rack (5) is provided on one side of the cylindrical gear (6). The cylindrical gear (6) meshes with the cylindrical rack (5). A disc (16) is welded on the cylindrical rack (5). The disc (16) is connected to the gear rotating mechanism sealing shell (4) by a bellows (2). The output end of the cylinder (1) is connected to the disc (16). The cylinder body of the cylinder (1) is mounted on the cylinder fixing bracket (3).

2. The bellows-sealed gear-type rotary valve according to claim 1, characterized in that: The valve body (10) is provided with external flange I (11) at both ends. An access pipe is provided on the outside of the external flange I (11). An external flange II (15) is provided at the outside end of the access pipe. Several connecting screw holes are provided on the external flange II (15).

3. The bellows-sealed gear-type rotary valve according to claim 1, characterized in that: A connecting flange (8) is provided between the sealing shell (4) of the gear rotation mechanism and the valve cylinder (9). The connecting flange (8) is installed between the sealing shell (4) of the gear rotation mechanism and the valve cylinder (9) by fixing bolts.

4. A bellows-sealed gear-type rotary valve according to claim 1, characterized in that: The valve cylinder (9) has valve cylinder connecting plates at both ends, and the valve cylinder connecting plates have several connecting screw holes.

5. A bellows-sealed gear-type rotary valve according to claim 1, characterized in that: The valve body (10) is provided with several connecting screw holes, and the external flange I (11) is installed in the connecting screw holes on the valve body (10) by fixing bolts.

6. A bellows-sealed gear-type rotary valve according to claim 1, characterized in that: A rotating support bushing is provided between the valve stem (7) and the valve cylinder (9), and the rotating support bushing is installed in a bushing mounting groove on the valve cylinder (9).

7. A bellows-sealed gear-type rotary valve according to claim 1, characterized in that: The gear rotation mechanism sealing shell (4) is installed on top of the center hole of the valve cylinder (9).

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