CN214092310U

CN214092310U - Assembling and positioning structure of rotary vane vacuum pump

Info

Publication number: CN214092310U
Application number: CN202023135814.6U
Authority: CN
Inventors: 谭波
Original assignee: Linhai Tan Vacuum Equipment Co ltd
Current assignee: Linhai Tan Vacuum Equipment Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-31
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a rotary vane vacuum pump positioning structure, including the pump body and set up the pump core subassembly in the pump body, the pump core subassembly includes pump cover, low level pump body and senior pump body in proper order, be provided with the rotor of taking the rotary vane in senior pump body and the low level pump body, all be provided with locating component between low level pump body and the pump cover, between low level pump body and the senior pump body and realize accurate rapid Assembly, locating component includes the locating hole and sets up the locating pin in the locating hole. The utility model discloses a carry out structural improvement on the basis of original spinning blade vacuum pump, specifically through addding locating hole and locating pin to realize the accurate location of assembling process, avoid assembling the emergence of dislocation problem, improve assembly efficiency, reduce the fault rate.

Description

Assembling and positioning structure of rotary vane vacuum pump

Technical Field

The utility model belongs to the technical field of the vacuum pump, concretely relates to sliding vane rotary vacuum pump positioning structure.

Background

The rotary vane vacuum pump mainly comprises a pump body and a rotor. More than two rotary vanes are arranged in the rotor groove, and springs are arranged among some pump rotary vanes. The rotor is eccentrically arranged in the pump chamber, and the clearance between the outer edge of the rotor and the top surface of the pump chamber is 2-3 microns. When the rotor rotates, under the action of centrifugal force, the rotary sheet slides back and forth along the slot and is always contacted with the inner wall of the pump cavity, so that the pump cavity is divided into two or more variable-volume working chambers. When the rotor rotates clockwise, the volume of the air suction cavity communicated with the air suction port is gradually increased from zero, the air pressure in the cavity is reduced, and the air to be sucked is continuously sucked from the air suction port. Meanwhile, the volume of the exhaust cavity communicated with the exhaust port is reduced from large to small, the gas in the suction cavity is compressed, and when the gas pressure is higher than the atmospheric pressure, the exhaust valve is pushed open to exhaust the atmosphere. The rotor rotates continuously, and the pump pumps air continuously.

The vacuum pump of current rotary-vane structure, the structure is comparatively complicated usually, and production equipment is with high costs, and it is often not accurate enough to appear the equipment position in the equipment process, needs to dismantle the equipment again, influences the work efficiency of equipment, improves the equipment fault rate.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a sliding vane rotary vacuum pump positioning structure, this positioning structure can realize quick accurate assembly through little change to improve the packaging efficiency.

The utility model discloses a following technical scheme realizes:

a rotary vane vacuum pump positioning structure, include the pump body and set up the pump core subassembly in the pump body, the pump core subassembly includes pump cover, low level pump body and senior pump body in proper order, be provided with the rotor of taking the rotary vane in senior pump body and the low level pump body, its characterized in that all be provided with locating component between low level pump body and the pump cover, between low level pump body and the senior pump body and realize accurate quick assembly, locating component includes the locating hole and sets up the locating pin in the locating hole.

The assembling and positioning structure of the rotary vane vacuum pump is characterized in that three groups of positioning holes and three groups of positioning pins are correspondingly arranged, and three-hole positioning is realized.

The assembling and positioning structure of the rotary vane vacuum pump is characterized in that the front end of the low-stage pump body is fixedly connected with the pump cover through an inner hexagonal cylindrical head bolt with a gasket.

The assembling and positioning structure of the rotary vane vacuum pump is characterized in that an O-shaped sealing ring is arranged between the pump cover and the low-level pump body.

The rotary vane vacuum pump assembling and positioning structure is characterized in that the front end of the rotor is sequentially provided with a high-level rotating body and a low-level rotating body, the high-level rotating body is provided with a high-level rotary vane in an inserted mode, and the low-level rotating body is provided with a low-level rotary vane in an inserted mode.

The rotary vane vacuum pump assembly positioning structure is characterized in that exhaust holes are formed in the top of the low-level pump body, exhaust devices are installed at positions corresponding to the exhaust holes and comprise exhaust valve seats and exhaust valve covers arranged above the exhaust valve seats, the exhaust valve seats are fixed on the low-level pump body through screws, exhaust valve plates and exhaust valve springs arranged on the exhaust valve plates are arranged at the bottoms of the exhaust valve seats, and the exhaust valve plates are installed in the exhaust holes.

The assembling and positioning structure of the rotary vane vacuum pump is characterized in that an oil return pipe is installed on the side face of the exhaust valve seat, and the oil return pipe is fixed on a pump cover through a pipe hoop.

The assembling and positioning structure of the rotary vane vacuum pump is characterized in that a silencing oil plug is arranged on the high-grade pump body.

The utility model discloses a carry out structural improvement on the basis of original spinning blade vacuum pump, specifically through addding locating hole and locating pin to realize the accurate location of assembling process, avoid assembling the emergence of dislocation problem, improve assembly efficiency, reduce the fault rate.

Drawings

FIG. 1 is an overall assembly view of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1A-A;

FIG. 3 is a perspective view of the pump core assembly assembled;

FIG. 4 is a schematic structural view of FIG. 3 with the pump cover removed;

FIG. 5 is an installation configuration of FIG. 3 with the low-stage pump body removed;

FIG. 6 is an exploded view of the pump cartridge assembly;

in the figure, 1-pump cover, 2-low-stage pump body, 3-high-stage pump body, 4-rotor, 5-positioning hole, 6-positioning pin, 7-gasket, 8-hexagon socket head bolt, 9-O-shaped sealing ring, 10-high-stage rotor, 11-low-stage rotor, 12-high-stage rotor, 13-low-stage rotor, 14-exhaust hole, 15-exhaust valve seat, 16-exhaust valve cover, 17-exhaust valve plate, 18-exhaust valve spring, 19-oil return pipe, 20-pipe hoop and 21-noise reduction oil plug.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings for better understanding of the technical solution.

As shown in fig. 1-6, the utility model relates to a rotary vane vacuum pump positioning structure, including the pump body and set up the pump core subassembly in the pump body, the pump core subassembly includes low level pump body and senior pump body through bolted connection, the front end of low level pump body has the pump cover through the hexagon socket head cap bolted connection who takes the packing ring, be provided with the rotor of taking the rotary vane in senior pump body and the low level pump body, for realizing the pump cover, low level pump body and senior pump body are accurate quick location in the assembling process, between low level pump body and pump cover, all be provided with locating component between low level pump body and the senior pump body, this locating component includes the locating hole and sets up the locating pin in the locating hole, concrete locating hole and locating pin correspondence are provided with three groups, be three hole location forms.

As shown in fig. 3, in order to achieve the tightness of the assembly of the pump cover and the low-stage pump body, an O-ring is further disposed between the pump cover and the low-stage pump body. In order to reduce noise, a silencing oil plug is arranged on the high-grade pump body, a high-grade rotating body and a low-grade rotating body are sequentially arranged at the front end of the rotor, a high-grade rotating sheet is arranged on the high-grade rotating body in an inserted mode, and a low-grade rotating sheet is arranged on the low-grade rotating body in an inserted mode. The top of low-level pump body is provided with the exhaust hole, and exhaust apparatus is installed to the position that corresponds the exhaust hole, and this exhaust apparatus includes exhaust valve seat and sets up the exhaust valve lid in the exhaust valve seat top, and the exhaust valve seat passes through the fix with screw on low-level pump body, and the bottom of exhaust valve seat is provided with the discharge valve piece and sets up the discharge valve spring on the discharge valve piece, and the discharge valve piece is installed in the exhaust hole, and the side-mounting of exhaust valve seat has back oil pipe, and it fixes on the pump cover through the ferrule to return oil pipe.

The utility model discloses a pump core subassembly to current rotary vane vacuum pump carries out simple improvement on structure, in convenient accurate assembly, still can reduce the work load of assembly, improves the accurate rate and the efficiency of assembly, and structural change is little, easily realizes, convenient popularization and application.

Claims

1. The utility model provides a vane rotary vacuum pump positioning structure, includes the pump body and sets up the pump core subassembly in the pump body, the pump core subassembly includes pump cover (1), low level pump body (2) and senior pump body (3) in proper order, be provided with rotor (4) of taking the vane rotary in senior pump body (3) and low level pump body (2), its characterized in that all be provided with locating component between low level pump body (2) and pump cover (1), between low level pump body (2) and senior pump body (3) and realize accurate quick assembly, locating component includes locating hole (5) and sets up locating pin (6) in locating hole (5).

2. The assembling and positioning structure of a rotary vane vacuum pump as claimed in claim 1, wherein the positioning holes (5) and the positioning pins (6) are correspondingly provided in three sets, and are positioned in three holes.

3. The assembling and positioning structure of a rotary vane vacuum pump as claimed in claim 1, wherein the front end of the low-stage pump body (2) is fixedly connected with the pump cover (1) through an inner hexagonal cylindrical head bolt (8) with a gasket (7).

4. The assembling and positioning structure of a rotary vane vacuum pump according to claim 1, characterized in that an O-ring (9) is further provided between the pump cover (1) and the lower stage pump body (2).

5. An assembling and positioning structure of a rotary vane vacuum pump according to claim 1, characterized in that the front end of the rotor (4) is sequentially provided with a high-level rotator (10) and a low-level rotator (11), the high-level rotator (10) is provided with a high-level rotary vane (12) in an inserted manner, and the low-level rotator (11) is provided with a low-level rotary vane (13) in an inserted manner.

6. The assembling and positioning structure of a rotary vane vacuum pump according to claim 1, characterized in that the top of the low-stage pump body (2) is provided with an exhaust hole (14), an exhaust device is installed at a position corresponding to the exhaust hole (14), the exhaust device comprises an exhaust valve seat (15) and an exhaust valve cover (16) arranged above the exhaust valve seat (15), the exhaust valve seat (15) is fixed on the low-stage pump body (2) through screws, the bottom of the exhaust valve seat (15) is provided with an exhaust valve plate (17) and an exhaust valve spring (18) arranged on the exhaust valve plate (17), and the exhaust valve plate (17) is installed in the exhaust hole (14).

7. The assembling and positioning structure of a vane-rotating vacuum pump according to claim 6, wherein the side surface of the exhaust valve seat (15) is provided with an oil return pipe (19), and the oil return pipe (19) is fixed on the pump cover (1) through a pipe hoop (20).

8. The assembling and positioning structure of a rotary vane vacuum pump according to claim 1, wherein the high-stage pump body (3) is provided with a noise reduction oil plug (21).