Two-stage rotary-vane vacuum pump

Abstract

The utility model discloses a two-stage rotary-vane vacuum pump, and relates to the technical field of vacuum pumps. The two-stage rotary-vane vacuum pump comprises a positioning plate, a pump body is fixedly mounted on the positioning plate, a water inlet of the pump body is communicated with a water inlet pipe, a water outlet of the pump body is communicated with a water outlet pipe, a positioning ring is fixedly mounted in the water inlet pipe, a screw ring is in threaded connection with the interior of the positioning ring, and a net plate is fixedly mounted in the screw ring. A screw ring is fixedly installed on the water inlet pipe, a limiting rod is fixedly installed on one side of the screw ring, an inserting rod is inserted into the positioning plate, a pressing ring is fixedly installed on the top of the inserting rod, and a reset spring is arranged on the surface of the inserting rod in a surrounding mode. According to the vacuum pump, the screen plate on the spiral ring is separated from the water inlet pipe, and then the screen plate can be detached, so that the screen plate can be cleaned and detached conveniently, subsequent use by workers is facilitated, and the use convenience of the vacuum pump is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum pump technical field, concretely is a kind of two-stage rotary vane vacuum pump. BACKGROUND

[0002] Vacuum pump is the device or equipment that is used to pump the container to be pumped to obtain vacuum by mechanical, physical, chemical or physical chemistry, in popular terms, vacuum pump is the device that is used to improve, generate and maintain vacuum in certain closed space by various methods, according to the working principle of vacuum pump, vacuum pump can be basically divided into two types, namely gas trapping pump and gas transmission pump, which is widely used in metallurgy, chemical industry, food, electronic plating film and other industries, vacuum pump is a large quantity and wide range product, and the output is large, but the output value is not high, but it is indeed an essential basic product that directly affects the performance and quality of vacuum complete equipment, the market of vacuum pump changes dynamically according to the needs of users, the main driving force of market growth comes from the rapid development of semiconductor industry and the increasing application field of dry pump and molecular pump, the existing patent, patent announcement No.CN214887703U discloses a two-stage rotary vane vacuum pump. Including two-stage pump body, oil tank and oil tank seat, oil tank and oil tank seat cover are arranged outside two-stage pump body, two-stage pump body includes front stage pump cavity and rear stage pump cavity, front stage pump cavity is provided with front stage pump rotor, rear stage pump cavity is provided with rear stage pump rotor, the outer circle of front stage pump rotor and rear stage pump rotor is tangent to the inner surface of pump cavity, the front stage pump rotor and rear stage pump rotor are provided with rotary vane and rotary vane spring, the rotary vane is wave-shaped, and the rotary vane is provided with a guide circular hole, the rotary vane spring is located in the guide circular hole, the two rotary vanes of front stage pump rotor and the two rotary vanes of rear stage pump rotor are connected by rotary vane spring, the rotary vane is tightly attached to the inner wall of pump cavity through rotary vane spring when the rotor rotates, the rotary vane always slides along the inner wall of pump cavity, the rotary vane spring is inserted with elastic support strip, the problem of spring aging and rotary vane axial displacement damaging pump body is solved.

[0003] For the related technology in the above, the inventor believes that the following defects exist: in use, although the problem of spring aging and rotary vane axial displacement damaging pump body can be solved, but it is not convenient to extrude and prevent sliding during installation and positioning, which reduces the stability of vacuum pump installation, so we propose a two-stage rotary vane vacuum pump to solve the above problems. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a two-stage rotary vane vacuum pump, which solves the problems in the above background art.

[0005] To achieve the above object, the utility model discloses a two-stage rotary vane vacuum pump through the following technical scheme, a positioning plate is fixedly installed with the pump body on the positioning plate, the water inlet of pump body is connected with the water inlet pipe, the water outlet of pump body is connected with the water outlet pipe, the inside fixed mounting of water inlet pipe has the positioning ring, the inside screw joint of positioning ring has the screw ring, the inside fixed mounting of screw ring has the screen plate, one side fixed mounting of screw ring has the limiting rod.

[0006] The plug rod is inserted on the positioning plate, the compression ring is fixedly installed on the top of the plug rod, the reset spring is arranged on the surface of the plug rod, the water inlet pipe is arranged, when the components inside the water inlet pipe need to be disassembled and cleaned, the screw ring on the limiting rod is rotated, the screen plate on the screw ring is separated from the water inlet pipe, the disassembly of the screen plate can be realized, the cleaning and disassembly operation of the screen plate are facilitated, the use of subsequent workers is facilitated, and the use convenience of the vacuum pump is improved.

[0007] Preferably, the inside of the water inlet pipe is fixedly installed with a sealing ring, the sealing ring is made of rubber, and the inner wall of the sealing ring is smooth.

[0008] Preferably, the top of the reset spring is fixedly connected with the bottom of the compression ring, and the bottom of the reset spring is fixedly connected with the top of the positioning plate.

[0009] Preferably, the positioning plate is provided with a positioning hole, and the lower surface of the positioning plate is fixedly installed with an anti-skid ring, and the bottom of the anti-skid ring is provided with anti-skid lines.

[0010] Preferably, the positioning plate is provided with an insertion hole through which the plug rod passes, and the inner wall of the insertion hole is slidingly connected with the surface of the plug rod.

[0011] Preferably, the inside of the water outlet pipe is fixedly installed with a rubber ring, one side of the rubber ring is fixedly installed with a check ring, and the check ring is made of silica gel.

[0012] Preferably, one side of the rubber ring is fixedly installed with an extrusion ring, and the surface of the extrusion ring is fixedly connected with the inner wall of the water outlet pipe.

[0013] Beneficial effects

[0014] The utility model provides a two-stage rotary vane vacuum pump, and compared with prior art has the following beneficial effects:

[0015] The two-stage rotary vane vacuum pump is provided with the water inlet pipe, when the components inside the water inlet pipe need to be disassembled and cleaned, the screw ring on the limiting rod is rotated, the screen plate on the screw ring is separated from the water inlet pipe, the disassembly of the screen plate can be realized, the cleaning and disassembly operation of the screen plate are facilitated, the use of subsequent workers is facilitated, and the use convenience of the vacuum pump is improved.

[0016] Meanwhile, when the component is positioned by the bolt, the compression ring is extruded during positioning, the one end of the inserting rod is in contact with one side of the component, the stability of the whole is increased, the vacuum pump is prevented from shaking during use, the stability of the vacuum pump installation is improved, the operation of the staff is facilitated, and the use convenience of the vacuum pump is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a first perspective three-dimensional structure schematic view of the utility model;

[0018] Figure 2 It is a second perspective three-dimensional structure schematic view of the utility model;

[0019] Figure 3 It is a third perspective three-dimensional structure schematic view of the utility model;

[0020] Figure 4 It is a third perspective three-dimensional structure schematic view of the utility model; Figure 1 It is a structure enlarged schematic view of A in the utility model.

[0021] In the drawing: 1, positioning plate, 2, pump body, 3, water inlet pipe, 4, water outlet pipe, 5, positioning ring, 6, screw ring, 7, mesh plate, 8, limiting rod, 9, inserting rod, 10, compression ring, 11, return spring, 12, sealing ring, 13, anti-skid ring, 14, rubber ring, 15, check ring, 16, extrusion ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a two-stage rotary vane vacuum pump, including positioning plate 1, positioning plate 1 is fixedly installed with pump body 2, the water inlet of pump body 2 is communicated with water inlet pipe 3, the water outlet of pump body 2 is communicated with water outlet pipe 4, water inlet pipe 3 is fixedly installed with positioning ring 5 in its inside, positioning ring 5 is threadedly connected with screw ring 6 in its inside, screw ring 6 is fixedly installed with mesh plate 7 in its inside, limiting rod 8 is fixedly installed on one side of screw ring 6, the water inlet pipe 3 is set, when needing to disassemble and clean the component in the inside of water inlet pipe 3, rotating screw ring 6 on limiting rod 8, so that mesh plate 7 on screw ring 6 is separated from water inlet pipe 3, the disassembly of mesh plate 7 can be realized, to facilitate cleaning and disassembly operation, facilitate subsequent staff use, improve the use convenience of the vacuum pump.

[0024] The positioning plate 1 is provided with an insertion rod 9, and the top of the insertion rod 9 is fixedly provided with a pressing ring 10.

[0025] Referring to Figure 3 , the inner part of the water inlet pipe 3 is fixedly provided with a sealing ring 12 made of rubber, and the inner wall of the sealing ring 12 is smooth.

[0026] Referring to Figure 3 and Figure 4 , the top of the reset spring 11 is fixedly connected with the bottom of the pressing ring 10, and the bottom of the reset spring 11 is fixedly connected with the top of the positioning plate 1. The bottom of the anti-skid ring 13 is provided with anti-skid lines. When the components are positioned by bolts, the pressing ring 10 is extruded at the same time, so that one end of the insertion rod 9 contacts one side of the part, thereby increasing the stability of the whole, avoiding the shaking of the vacuum pump during use, improving the stability of the vacuum pump installation, facilitating the operation of the staff, and improving the use convenience of the vacuum pump.

[0027] Referring to Figure 4 , the positioning plate 1 is provided with an insertion hole for the insertion rod 9 to pass through, and the inner wall of the insertion hole is in sliding connection with the surface of the insertion rod 9. The insertion hole facilitates the passing of the insertion rod 9 during use, improves the overall passability of the insertion rod 9, and also facilitates the use of subsequent staff, thereby improving the use convenience of the vacuum pump.

[0028] Referring to Figure 2 , the inner part of the water outlet pipe 4 is fixedly provided with a rubber ring 14, one side of the rubber ring 14 is fixedly provided with a check ring 15 made of silica gel, one side of the rubber ring 14 is fixedly provided with an extrusion ring 16, and the surface of the extrusion ring 16 is fixedly connected with the inner wall of the water outlet pipe 4. The rubber ring 14 facilitates the connection of subsequent components during use, and the check ring 15 facilitates the connection operation of the pipeline during use.

[0029] When working, the water inlet pipe 3 is arranged, when the components inside the water inlet pipe 3 need to be disassembled and cleaned, the screw ring 6 on the limiting rod 8 is rotated, so that the mesh plate 7 on the screw ring 6 is separated from the water inlet pipe 3, that is, the disassembly of the mesh plate 7 can be realized, thereby facilitating the cleaning and disassembly operation, facilitating the use of subsequent workers, and improving the use convenience of the vacuum pump. When the bolts are used to position the components, the compression ring 10 is extruded at the same time of positioning, so that one end of the insertion rod 9 is in contact with one side of the part, thereby increasing the stability of the whole, avoiding the shaking of the vacuum pump during use, improving the stability of the vacuum pump installation, facilitating the operation of the workers, and improving the use convenience of the vacuum pump.

[0030] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

Claims

1. A two-stage rotary vane vacuum pump comprising a positioning plate (1), characterized in that: The positioning plate (1) is fixedly installed with a pump body (2), the water inlet of the pump body (2) is communicated with a water inlet pipe (3), the water outlet of the pump body (2) is communicated with a water outlet pipe (4), the inside of the water inlet pipe (3) is fixedly installed with a positioning ring (5), the inside of the positioning ring (5) is threadedly connected with a screw ring (6), the inside of the screw ring (6) is fixedly installed with a mesh plate (7), one side of the screw ring (6) is fixedly installed with a limiting rod (8). The positioning plate (1) is inserted with an insertion rod (9), the top of the insertion rod (9) is fixedly installed with a pressing ring (10), the surface of the insertion rod (9) is provided with a reset spring (11).

2. A two-stage rotary vane vacuum pump according to claim 1, characterized in that: The inside of the water inlet pipe (3) is fixedly installed with a sealing ring (12), the sealing ring (12) is made of rubber, and the inner wall of the sealing ring (12) is smooth.

3. A two-stage rotary vane vacuum pump according to claim 1, characterized in that: The top of the reset spring (11) is fixedly connected with the bottom of the pressing ring (10), and the bottom of the reset spring (11) is fixedly connected with the top of the positioning plate (1).

4. A two-stage rotary vane vacuum pump according to claim 1, characterized in that: The positioning plate (1) is provided with a positioning hole, and the lower surface of the positioning plate (1) is fixedly installed with an anti-skid ring (13), and the bottom of the anti-skid ring (13) is provided with anti-skid lines.

5. A two-stage rotary vane vacuum pump according to claim 1, characterized in that: The positioning plate (1) is provided with an insertion hole for the insertion rod (9) to pass through, and the inner wall of the insertion hole is in sliding connection with the surface of the insertion rod (9).

6. A two-stage rotary vane vacuum pump according to claim 1, characterized in that: The inside of the water outlet pipe (4) is fixedly installed with a rubber ring (14), one side of the rubber ring (14) is fixedly installed with a check ring (15), and the check ring (15) is made of silica gel.

7. A two-stage rotary vane vacuum pump according to claim 6, characterized in that: One side of the rubber ring (14) is fixedly installed with an extrusion ring (16), and the surface of the extrusion ring (16) is fixedly connected with the inner wall of the water outlet pipe (4).

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