CN210218111U

CN210218111U - Oil return prevention structure for rotary-vane vacuum pump

Info

Publication number: CN210218111U
Application number: CN201920561876.1U
Authority: CN
Inventors: Heng Zhang; 张恒; Xu Yang; 杨旭; Xiaopeng Guan; 管晓鹏
Original assignee: Jinzhou Hengshun New Energy Technology Co Ltd
Current assignee: Jinzhou Hengshun New Energy Technology Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-03-31
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a rotary-vane vacuum pump is with preventing returning oily structure, including intake pipe and rotor, the inside of intake pipe is provided with the filter screen, and the below of filter screen is provided with one-way baffle, the lower extreme of intake pipe is provided with the sealing washer, and the middle part of intake pipe is provided with the fender oil board, the below of sealing washer is provided with the pump body, and the inside of pump body is provided with the rotor, the front end of rotor is provided with spring and rotary vane respectively, and the spring is located the middle part of rotary vane, the outside of pump body is provided with the oil tank, and the outside of oil tank is provided with outer shell, the right-hand member top of pump body is provided with pump oil structure. This rotary-vane vacuum pump is with preventing returning oily structure compares with current ordinary vacuum pump, increases the practicality that the structure has improved whole device simultaneously greatly, and the equipment after the improvement can be good avoid returning oily the condition to appear in the use to equipment inner structure is more compact, and stability is better, the effectual user demand that has satisfied people.

Description

Oil return prevention structure for rotary-vane vacuum pump

Technical Field

The utility model relates to a vacuum pump technical field specifically is a rotary-vane vacuum pump is with preventing returning oil structure.

Background

The vacuum pump is a device or equipment for obtaining vacuum by pumping a pumped container by using mechanical, physical, chemical or physical-chemical methods, and is a device for improving, generating and maintaining vacuum in a certain closed space by using various methods.

The inside and outside structure of current vacuum pump is comparatively simple, and the practicality in the use is obviously not enough to return oily condition because of simple structure appears very easily in the operation process of equipment, thereby indirect inside oil pressure stability that leads to equipment, the user demand of satisfying people that can not be fine carries out technical innovation on current vacuum pump basis to above-mentioned condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotary-vane vacuum pump is with preventing returning oily structure to it is comparatively simple to provide general vacuum pump inside and outside structure in solving above-mentioned background art, and the practicality in the use is obviously not enough, and the condition of returning oil appears very easily because of simple structure in the operation process of equipment, thereby indirect inside oil pressure stability that leads to equipment, the user demand problem of satisfying people that can not be fine.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a rotary-vane vacuum pump is with preventing returning oily structure, includes intake pipe and rotor, the inside of intake pipe is provided with the filter screen, and the below of filter screen is provided with one-way baffle, the lower extreme of intake pipe is provided with the sealing washer, and the middle part of intake pipe is provided with the oil baffle, the below of sealing washer is provided with the pump body, and the inside of pump body is provided with the rotor, the front end of rotor is provided with spring and rotary vane respectively, and the spring is located the middle part of rotary vane, the outside of pump body is provided with the oil tank, and the outside of oil tank is provided with outer shell, the right-hand member top of pump body is provided with pump oil structure, and the inside of pump oil structure.

Preferably, the filter screen is set to be of an arc-shaped structure, and the filter screen is embedded in the air inlet pipe.

Preferably, the one-way partition plate is arranged to be an inclined structure, the one-way partition plate and the inner wall of the air inlet pipe are of an integrated structure, and the upper surface of the sealing ring is tightly attached to the lower end edge of the air inlet pipe.

Preferably, the lower end of the air inlet pipe is fixedly connected with the upper end of the pump body, and the central axis of the pump body coincides with the central axis of the oil tank.

Preferably, the diameter of the outer circular arc of the rotor is smaller than that of the inner circular arc of the pump body, and the horizontal height of the central axis of the rotor is higher than that of the central axis of the pump body.

Preferably, the rotor is a horizontal sheet structure, and the rotor constitutes a rotary structure by a rotor.

Preferably, the oil pumping structure is fixedly connected with the upper end of the pump body, the diameter of an outer circular arc of the pump body is smaller than that of an inner circular arc of the oil tank, and the inner surface of the outer wrapping shell is tightly attached to the outer surface of the oil tank.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model can filter and guide the upper end of the air inlet pipe through the arrangement of the filter screen and the one-way partition plate, and can avoid the backflow situation of air inlet through the inclined one-way partition plate and keep the air inlet speed above the air inlet pipe;

2. the utility model can effectively avoid the oil return condition in the use process of the interior of the equipment by arranging the oil baffle plate, and improve the laminating degree of the lower end of the air inlet pipe between the pump bodies by utilizing the sealing ring, thereby improving the sealing property between equipment connection and keeping the independence of the internal space of the pump bodies;

3. the utility model discloses a setting of spring, rotor and rotor can utilize the rotor to drive the rotation operation of rotor, and the spring can exert pressure to rotor self, makes both ends all contact with the inside surface of pump body about the rotor to outer shell can wrap up comprehensively the outside of oil tank, thereby protects the guard action to the oil tank.

Drawings

FIG. 1 is a schematic view of the main view of the full-section structure of the present invention;

FIG. 2 is a schematic view of the external structure of the present invention;

FIG. 3 is a schematic view of the enlarged structure of the part A of the present invention;

fig. 4 is a schematic view of the top view structure of the present invention.

In the figure: 1. an air inlet pipe; 2. filtering with a screen; 3. a one-way separator; 4. an oil baffle plate; 5. a seal ring; 6. a spring; 7. rotating the sheet; 8. a rotor; 9. a pump body; 10. an oil tank; 11. an oil pumping structure; 12. an exhaust valve plate; 13. and (4) coating a shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an oil return prevention structure for a rotary-vane vacuum pump comprises an air inlet pipe 1 and a rotor 8, wherein a filter screen 2 is arranged in the air inlet pipe 1, a one-way partition plate 3 is arranged below the filter screen 2, the filter screen 2 is of an arc-shaped structure, the filter screen 2 is embedded in the air inlet pipe 1, a sealing ring 5 is arranged at the lower end of the air inlet pipe 1, an oil baffle plate 4 is arranged in the middle of the air inlet pipe 1, the one-way partition plate 3 is of an inclined structure body, the one-way partition plate 3 and the inner wall of the air inlet pipe 1 are of an integral structure, the upper surface of the sealing ring 5 is tightly attached to the lower end edge of the air inlet pipe 1, a pump body 9 is arranged below the sealing ring 5, the rotor 8 is arranged in the pump body 9, the lower end of the air inlet pipe 1 is fixedly connected with the upper end of the pump body 9, the central axis of the pump body 9 coincides, and the axle wire horizontal height of the rotor 8 is higher than the axle wire horizontal height of the pump body 9, the utility model discloses a setting of filter screen 2 and one-way baffle 3 can be to the upper end of intake pipe 1 filter and the direction operation, and can avoid the backflow condition of admitting air through the one-way baffle 3 of slope, keep the intake rate above the intake pipe 1, the utility model discloses a setting of oil baffle 4 can effectively avoid the oil return condition that appears in the use in the equipment, and utilize the sealing washer 5 to improve the laminating degree of intake pipe 1 lower extreme between the pump body 9, thereby improved the leakproofness between the equipment connection, keep the independence of the inner space of the pump body 9;

the front end of the rotor 8 is respectively provided with a spring 6 and a rotary vane 7, the spring 6 is positioned in the middle of the rotary vane 7, the rotary vane 7 is arranged into a horizontal sheet structure body, the rotary vane 7 forms a rotary structure through the rotor 8, the outer part of the pump body 9 is provided with an oil tank 10, the outer part of the oil tank 10 is provided with an outer casing 13, an oil pumping structure 11 is arranged above the right end of the pump body 9, an exhaust valve plate 12 is arranged inside the oil pumping structure 11, the oil pumping structure 11 is fixedly connected with the upper end of the pump body 9, the outer circular arc diameter of the pump body 9 is smaller than the inner circular arc diameter of the oil tank 10, and the inner surface of the outer casing 13 is tightly attached to the outer surface of the oil tank 10. through the arrangement of the spring 6, the rotary vane 7 and the rotor 8, the rotor 8 can be used for driving the rotary operation of the rotary vane 7, the spring 6 can apply pressure to the rotary vane 7, so as to ensure that the left end and, and the outer casing 13 can fully wrap the outside of the fuel tank 10, thereby protecting the fuel tank 10.

The working principle is as follows: when the oil return preventing structure for the rotary-vane vacuum pump is used, firstly, the whole device can be directly used without operations such as dismounting, debugging and the like before use, the rotary vane 7 in the pump body 9 divides a crescent space formed by the rotor 8, the pump cavity and the two end covers into A, B, C parts, when the rotor 8 rotates clockwise, the volume of a space A communicated with an air suction port is gradually increased and is in an air suction process, the volume of a space C communicated with an air exhaust port is gradually reduced, the volume of a space B in the middle of an air exhaust process is also gradually reduced and is in a compression process, as the volume of the space A is gradually increased (namely expanded), the air pressure is reduced, the external air pressure at the inlet of the pump is higher than the pressure in the space A, therefore, air is sucked, when the space A is isolated from the air suction port, the space A is rotated to the position of the space B, the gas begins to be compressed, the volume is gradually reduced, and finally the gas is communicated with the exhaust port, when the compressed gas exceeds the exhaust pressure, the exhaust valve is pushed away by the compressed gas, the gas passes through the oil layer in the oil tank 10 and is discharged to the atmosphere, the continuous operation of the pump achieves the purpose of continuous air extraction, and the outer casing 13 can fully wrap the outside of the fuel tank 10, thereby performing a protective function on the fuel tank 10, wherein the backflow of the inlet air can be avoided through the inclined one-way baffle 3, the inlet air speed above the inlet pipe 1 is kept, the oil baffle plate 4 is arranged, can effectively avoid the oil return condition in the use process of the interior of the equipment, and improves the attaching degree of the lower end of the air inlet pipe 1 between the pump bodies 9 by utilizing the sealing ring 5, therefore, the sealing performance between equipment connections is improved, and the working principle of the oil return prevention structure for the rotary-vane vacuum pump is the working principle.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rotary-vane vacuum pump is with preventing returning oily structure, includes intake pipe (1) and rotor (8), its characterized in that: the utility model discloses a pump, including intake pipe (1), sealing ring (6), oil baffle (7), spring (6), pump body (9), air inlet pipe (1), air inlet pipe (2), air outlet pipe (3), air inlet pipe (1), air inlet pipe (5), air inlet pipe (6), air outlet pipe (11), air outlet pipe (12), air outlet pipe (6), air inlet pipe (9), air outlet pipe (7), air outlet pipe (11), air outlet pipe (12), air outlet pipe (9), air outlet pipe (6), air outlet pipe (7), air outlet pipe (9), air outlet pipe (10), air outlet pipe (12), air outlet pipe (11), air outlet pipe (6), air outlet pipe (7), air outlet pipe (6), air outlet pipe (9), air outlet pipe (7.

2. The oil return prevention structure for the rotary vane vacuum pump according to claim 1, characterized in that: the filter screen (2) is of an arc-shaped structure, and the filter screen (2) is embedded in the air inlet pipe (1).

3. The oil return prevention structure for the rotary vane vacuum pump according to claim 1, characterized in that: one-way partition plate (3) is arranged to be an inclined structure body, and is of an integrated structure between one-way partition plate (3) and the inner wall of air inlet pipe (1), and the upper surface of sealing ring (5) is tightly attached to the lower edge of air inlet pipe (1).

4. The oil return prevention structure for the rotary vane vacuum pump according to claim 1, characterized in that: the lower end of the air inlet pipe (1) is fixedly connected with the upper end of the pump body (9), and the central axis of the pump body (9) coincides with the central axis of the oil tank (10).

5. The oil return prevention structure for the rotary vane vacuum pump according to claim 1, characterized in that: the diameter of an outer circular arc of the rotor (8) is smaller than that of an inner circular arc of the pump body (9), and the horizontal height of a central axis of the rotor (8) is higher than that of the central axis of the pump body (9).

6. The oil return prevention structure for the rotary vane vacuum pump according to claim 1, characterized in that: the rotary vane (7) is a horizontal sheet-shaped structure, and the rotary vane (7) forms a rotary structure through the rotor (8).

7. The oil return prevention structure for the rotary vane vacuum pump according to claim 1, characterized in that: the oil pumping structure (11) is fixedly connected with the upper end of the pump body (9), the diameter of an outer circular arc of the pump body (9) is smaller than that of an inner circular arc of the oil tank (10), and the inner surface of the outer casing (13) is tightly attached to the outer surface of the oil tank (10).