Rotary-vane vacuum pump

Abstract

The utility model discloses a rotary vane vacuum pump which comprises a pump body, a sealing mechanism is arranged on the pump body, the sealing mechanism comprises a water inlet pipe, a fixing sleeve, an external pipe, an inserting mechanism, a clamping mechanism, a reducing block, an unfastening rod, an extending plate and a spring, the water inlet pipe is installed on the pump body, the fixing sleeve is installed on the water inlet pipe, and the external pipe is connected with the inserting mechanism. The external pipe is connected to external equipment, the insertion mechanism is connected to the fixing sleeve and the external pipe in a matched mode, the sealing mechanism can be effectively connected and sealed with the external equipment, connectivity with the external equipment is ensured through connection of the water inlet pipe and the external pipe, and stable support is provided through installation of the fixing sleeve. The sealing flexibility is achieved through matched connection of the insertion mechanism, the sealing convenience is improved through the design, and the working performance and stability of the vacuum pump are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary vane vacuum pumps, and more specifically to a rotary vane vacuum pump. Background Art

[0002] In the existing technology, the rotary vane vacuum pump is a widely used mechanical vacuum pump, and its main working principle is to form a variable volume in the pump chamber through the rotational movement of the rotary vane, thereby realizing the suction and discharge of gas. However, when using a rotary vane vacuum pump, in order to ensure the effective operation of the pump, it must be connected to an external system or equipment, and the sealing of the connection must be guaranteed to prevent the vacuum in the pump chamber from being destroyed. Existing sealing methods often involve complex sealing structures and the coordination of multiple components, such as sealing rings, gaskets, bolt fastening, etc. These complex sealing methods not only increase the difficulty of installation and maintenance of the equipment, but may also cause vacuum leakage due to poor sealing, affecting the working performance and service life of the pump. In addition, the complex sealing structure may also increase the cost and volume of the equipment, limiting its use in certain applications. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the utility model provides a rotary vane vacuum pump to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary vane vacuum pump, comprising a pump body, a sealing mechanism is arranged on the pump body, the sealing mechanism comprises a water inlet pipe, a fixed sleeve, an external pipe, an insertion mechanism, a clamping mechanism, a reducing block, an unwinding rod, an extension plate and a spring, the water inlet pipe is installed on the pump body, the fixed sleeve is installed on the water inlet pipe, the external pipe is connected to external equipment, the insertion mechanism is cooperatively connected to the fixed sleeve and the external pipe, the clamping mechanism is installed on the fixed sleeve, the reducing block is installed on the external pipe, the unwinding rod is connected to the extension plate, the two ends of the extension plate are respectively connected to springs, the spring is connected to the side wall of the fixed sleeve, the unwinding rod is perpendicular to the side wall of the fixed sleeve, and the unwinding rod abuts against the reducing block, and a flared opening is provided on the external pipe.

[0007] The utility model is further configured that a plurality of vertical grooves are equidistantly provided on the side wall of the fixing sleeve, each of the vertical grooves is arranged between two of the reducing blocks, and the design of the vertical grooves ensures the limiting of the push rod.

[0008] The utility model is further configured such that the clamping mechanism includes a push rod and a follower plate, the follower plate is vertically mounted on the protruding plate, push rods are respectively mounted on both ends of the follower plate, a plurality of lateral grooves are provided on the side wall of the fixed sleeve, every two push rods are respectively slidably connected in the lateral grooves, a push groove is provided on the side wall of the fixed sleeve, the push rod abuts against the push groove, and the design of the clamping mechanism ensures the convenience of the card machine.

[0009] The utility model is further configured that a threaded sleeve is provided on the fixed sleeve, a thrust bearing is abutted on the threaded sleeve, a push block is provided on the follower plate, the thrust bearing abuts on the push block, an anti-slip groove is provided on the threaded sleeve, and an anti-slip strip is provided on the external tube. The design of the threaded sleeve ensures stable clamping of the push rod.

[0010] The utility model is further configured such that the insertion mechanism includes an insertion tube and a rubber ring, the insertion tube is coaxially mounted on the external tube, a plurality of rubber rings are provided, and the plurality of rubber rings are coaxially mounted on the external tube, respectively, and the design of the insertion mechanism ensures the convenience of sealing.

[0011] The utility model is further configured that a plurality of sealing grooves are provided in the fixing sleeve, the rubber ring is clamped in the sealing groove, the insertion tube is slidably connected in the fixing sleeve, and the design of the sealing groove ensures the sealing effect.

[0012] The utility model is further configured that a water outlet pipe is connected to the pump body, and a sealing bolt is threadedly provided on the side wall of the pump body.

[0013] The utility model is further configured that the upper end surface of the pump body is provided with a handle, and the lower end surface of the pump body is provided with a base.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a rotary vane vacuum pump, which has the following beneficial effects:

[0016] 1. The sealing mechanism provides a simple and reliable sealing method, ensuring the vacuum maintenance and leakage prevention of the rotary vane vacuum pump during use. Through the cooperation of the water inlet pipe, fixed sleeve, external pipe, insertion mechanism, clamping mechanism, reducer, release rod, extension plate and spring, the sealing mechanism can achieve effective connection and sealing with external equipment. The connection between the water inlet pipe and the external pipe ensures the connectivity with external equipment, while the installation of the fixed sleeve provides stable support. The coordinated connection of the insertion mechanism realizes the flexibility of sealing. This design not only improves the convenience of sealing, but also ensures the working performance and stability of the vacuum pump.

[0017] 2. The clamping mechanism provides an accurate and adaptable connection method, ensuring the stability and sealing of the rotary vane vacuum pump during the connection process. Through the cooperation of the push rod and the follower plate, the clamping mechanism can effectively seal the fixed pipe and the external pipe, thereby achieving a firm connection with the external equipment. This design not only improves the accuracy of the connection, but also ensures the stability and reliability of the vacuum pump during operation.

[0018] 3. The insertion mechanism provides a flexible and adaptable sealing method, ensuring the sealing and stability of the rotary vane vacuum pump during the connection process. Through the cooperation of the insertion tube and the rubber ring, the insertion mechanism can achieve a sealed connection with external equipment to prevent vacuum leakage. This design not only improves the convenience of sealing, but also ensures the working performance and stability of the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a rotary vane vacuum pump in the utility model;

[0020] Figure 2 It is a structural schematic diagram of the sealing mechanism in the utility model;

[0021] Figure 3 For the utility model Figure 2 A schematic cross-sectional structure diagram of ;

[0022] Figure 4 It is a structural schematic diagram of the untying rod in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the external pipe connection in the utility model.

[0024] In the figure: 1. pump body; 2. water inlet pipe; 3. fixing sleeve; 4. external pipe; 5. reducing block; 6. unfastening rod; 7. extension plate; 8. spring; 9. flaring; 10. vertical groove; 11. push rod; 12. follower plate; 13. lateral groove; 14. push groove; 15. threaded sleeve; 16. thrust bearing; 17. push block; 18. anti-skid groove; 19. anti-skid strip; 20. insertion tube; 21. rubber ring; 22. sealing groove; 23. water outlet pipe; 24. sealing bolt; 25. handle; 26. base. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0028] See also Figure 1-5 A rotary vane vacuum pump comprises a pump body 1, a sealing mechanism is arranged on the pump body 1, the sealing mechanism comprises a water inlet pipe 2, a fixing sleeve 3, an external pipe 4, an insertion mechanism, a clamping mechanism, a reducing block 5, an unfastening rod 6, an extending plate 7 and a spring 8, the water inlet pipe 2 is mounted on the pump body 1, the fixing sleeve 3 is mounted on the water inlet pipe 2, the external pipe 4 is connected to an external device, the insertion mechanism is cooperatively connected to the fixing sleeve 3 and the external pipe 4, the clamping mechanism is mounted on the fixing sleeve 3, the reducing block 5 is mounted on the external pipe 4, the unfastening rod 6 is connected On the extension plate 7, both ends of the extension plate 7 are respectively connected with springs 8, the springs 8 are connected to the side walls of the fixed sleeve 3, the release rod 6 is perpendicular to the side walls of the fixed sleeve 3, and the release rod 6 abuts against the reducer 5, the external pipe 4 is provided with a flared opening 9, and the side walls of the fixed sleeve 3 are equidistantly provided with a plurality of vertical grooves 10, each vertical groove 10 is arranged between two reducer blocks 5, the clamping mechanism includes a push rod 11 and a follower plate 12, the follower plate 12 is vertically mounted on the extension plate 7, and push rods are respectively mounted at both ends of the follower plate 12 11, a plurality of lateral grooves 13 are provided on the side wall of the fixed sleeve 3, and each two push rods 11 are respectively slidably connected in the lateral grooves 13, a push groove 14 is provided on the side wall of the fixed sleeve 3, and the push rod 11 abuts on the push groove 14, a threaded sleeve 15 is provided on the fixed sleeve 3, and a thrust bearing 16 is abutted on the threaded sleeve 15, a push block 17 is provided on the follower plate 12, and the thrust bearing 16 abuts on the push block 17, an anti-slip groove 18 is provided on the threaded sleeve 15, and an anti-slip strip 19 is provided on the external pipe 4, and the insertion mechanism includes an insertion mechanism. Inlet pipe 20 and rubber ring 21, the insertion pipe 20 is coaxially installed on the external pipe 4, a plurality of rubber rings 21 are provided, and the plurality of rubber rings 21 are coaxially installed on the external pipe 4, a plurality of sealing grooves 22 are opened in the fixing sleeve 3, the rubber ring 21 is stuck in the sealing groove 22, the insertion pipe 20 is slidably connected in the fixing sleeve 3, a water outlet pipe 23 is connected to the pump body 1, and a sealing bolt 24 is threaded on the side wall of the pump body 1, a handle 25 is provided on the upper end surface of the pump body 1, and a base 26 is provided on the lower end surface of the pump body 1.

[0029] When the outer tube 4 needs to be inserted into the fixing sleeve 3, since the outer tube 4 is provided with a flared opening 9, when the flared opening 9 abuts against the push rod 11, multiple push rods 11 will be extended outward, and then the insertion tube 20 and the rubber ring 21 will abut against the fixing sleeve 3 and the sealing groove 22 respectively, and then the push rod 11 will slide inward along the lateral groove 13 under the action of the spring 8, so that the push rod 11 is inserted into the push groove 14, and the push rod abuts against the reducing groove, and then the threaded sleeve 15 is rotated, and the push rod 11 can be driven to move toward the direction of the rubber ring 21 through the thrust bearing 16, and then the rubber ring 21 and the sealing groove 22 can be effectively sealed. When it is necessary to unlock, it is only necessary to rotate the outer tube 4 so that the unlocking rod 6 slides along the reducing block 5, and then the unlocking rod 6 is pushed against the vertical groove 10, and then the outer tube 4 is stretched outward, and when the push rod 11 is on the side wall of the fixing sleeve 3, the push rod 11 at the other end will also rise accordingly, so that the unlocking process can be completed.

[0030] More specifically, after the external pipe 4 and the water inlet pipe 2 are fixed, the vacuum pump is started, and then water can be sucked in through the water inlet pipe 2 and discharged through the water outlet pipe 23, and the process of water suction and water discharge can be completed.

[0031] In summary, when the overall device is in use or running: when the external tube 4 needs to be inserted into the fixed sleeve 3, since the external tube 4 is provided with a flared opening 9, when the flared opening 9 abuts against the push rod 11, multiple push rods 11 will be extended outward, and then the insertion tube 20 and the rubber ring 21 will abut against the fixed sleeve 3 and the sealing groove 22 respectively, and then under the action of the spring 8, the push rod 11 slides inward along the lateral groove 13, so that the push rod 11 is inserted into the push groove 14, the push rod abuts against the reducing groove, and then rotates The threaded sleeve 15 can drive the push rod 11 to move toward the rubber ring 21 through the thrust bearing 16, and then the rubber ring 21 and the sealing groove 22 can be effectively sealed. When it is necessary to unlock, it is only necessary to rotate the external tube 4 to make the unlocking rod 6 slide along the reducing block 5, and then make the unlocking rod 6 press against the vertical groove 10, and then stretch the external tube 4 outward. When the push rod 11 is fixed on the side wall of the sleeve 3, the push rod 11 at the other end will also rise, so the unlocking process can be completed.

[0032] After the external pipe 4 and the water inlet pipe 2 are fixed, the vacuum pump is started, and then water can be sucked in through the water inlet pipe 2 and discharged through the water outlet pipe 23, and the process of water suction and water discharge can be completed.

[0033] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rotary vane vacuum pump, comprising a pump body (1), characterized in that: The pump body (1) is provided with a sealing mechanism, which comprises a water inlet pipe (2), a fixed sleeve (3), an external pipe (4), an insertion mechanism, a clamping mechanism, a reducing block (5), an unfastening rod (6), an extension plate (7) and a spring (8). The water inlet pipe (2) is mounted on the pump body (1), the fixed sleeve (3) is mounted on the water inlet pipe (2), the external pipe (4) is connected to an external device, the insertion mechanism is cooperatively connected to the fixed sleeve (3) and the external pipe (4), the clamping mechanism is mounted on the fixed sleeve (3), the reducing block (5) is mounted on the external pipe (4), the unfastening rod (6) is connected to the extension plate (7), both ends of the extension plate (7) are respectively connected to springs (8), the spring (8) is connected to the side wall of the fixed sleeve (3), the unfastening rod (6) is perpendicular to the side wall of the fixed sleeve (3), and the unfastening rod (6) abuts against the reducing block (5), and the external pipe (4) is provided with a flaring opening (9).

2. A rotary vane vacuum pump according to claim 1, characterized in that: A plurality of vertical grooves (10) are equidistantly provided on the side wall of the fixing sleeve (3), and each of the vertical grooves (10) is arranged between two of the reducing blocks (5).

3. A rotary vane vacuum pump according to claim 2, characterized in that: The clamping mechanism comprises a push rod (11) and a follower plate (12), wherein the follower plate (12) is vertically mounted on the extending plate (7), and push rods (11) are respectively mounted on both ends of the follower plate (12). A plurality of lateral grooves (13) are provided on the side wall of the fixed sleeve (3), and every two push rods (11) are respectively slidably connected in the lateral grooves (13). A push groove (14) is provided on the side wall of the fixed sleeve (3), and the push rod (11) abuts against the push groove (14).

4. A rotary vane vacuum pump according to claim 3, characterized in that: A threaded sleeve (15) is threadedly provided on the fixed sleeve (3), a thrust bearing (16) is abutted on the threaded sleeve (15), a push block (17) is provided on the follower plate (12), the thrust bearing (16) abuts on the push block (17), an anti-slip groove (18) is provided on the threaded sleeve (15), and an anti-slip strip (19) is provided on the external pipe (4).

5. A rotary vane vacuum pump according to claim 4, characterized in that: The insertion mechanism comprises an insertion tube (20) and a rubber ring (21); the insertion tube (20) is coaxially mounted on an external tube (4); a plurality of rubber rings (21) are provided, and the plurality of rubber rings (21) are respectively coaxially mounted on the external tube (4).

6. A rotary vane vacuum pump according to claim 5, characterized in that: A plurality of sealing grooves (22) are provided in the fixing sleeve (3), the rubber ring (21) is stuck in the sealing groove (22), and the insertion tube (20) is slidably connected in the fixing sleeve (3).

7. A rotary vane vacuum pump according to claim 1, characterized in that: The pump body (1) is connected to a water outlet pipe (23), and a sealing bolt (24) is threadedly provided on the side wall of the pump body (1).

8. A rotary vane vacuum pump according to claim 1, characterized in that: The upper end surface of the pump body (1) is provided with a handle (25), and the lower end surface of the pump body (1) is provided with a base (26).

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