CN211525029U

CN211525029U - Vacuum pump air exhaust mechanism

Info

Publication number: CN211525029U
Application number: CN201921914364.5U
Authority: CN
Inventors: 王子硕
Original assignee: Shandong Longhong Food Co ltd
Current assignee: Shandong Longhong Food Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-09-18
Anticipated expiration: 2029-11-08

Abstract

The utility model relates to a vacuum pump air exhaust mechanism, which comprises a cylinder body, wherein a piston is transversely arranged in the cylinder body, a connecting rod is connected at the center of the bottom of the piston, an end cover is arranged at the top of the cylinder body, a top cover is arranged at the top of the end cover, an air inlet and an air outlet are respectively arranged on the end cover, one side of the air inlet and one side of the air outlet are respectively communicated with an air inlet channel and an air outlet channel, an end cap and a blocking plate are respectively and correspondingly arranged in the air outlet of the air inlet, the top of the end cap and the blocking plate are respectively connected with a telescopic mechanism, the top of the telescopic mechanism is respectively fixedly welded with the air inlet and the top of the air outlet, one end of the air inlet channel far away from the air inlet is communicated with an air inlet pipe, and, damage is caused to the inside of the vacuum pump, and meanwhile, the effect of effectively reducing noise is achieved.

Description

Vacuum pump air exhaust mechanism

Technical Field

The utility model relates to a vacuum pump air exhaust mechanism belongs to vacuum pump technical field.

Background

The vacuum pump is a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physical-chemical method, and is widely applied to industries such as metallurgy, chemical engineering, food, electronic coating and the like, the types of the vacuum pump are various, and the vacuum pump can be generally divided into a rotary-vane vacuum pump and a reciprocating vacuum pump according to different structural principles, wherein the reciprocating vacuum pump is also called a piston vacuum pump, the core part of the piston vacuum pump is two pumping mechanisms and a motor for driving the pumping mechanisms, each pumping mechanism comprises a connecting rod, a cylinder and a piston arranged in the cylinder, and the motor drives the two pistons to respectively perform piston motion in the two cylinders through the connecting rod. Each cylinder is fixed with a valve plate, the valve plate is provided with a valve hole and a valve which seals the valve hole and can be opened in a single direction, and the opening and closing of the two valves can be realized by utilizing the reverse motion of the pistons in the two cylinders, so that the vacuum pumping operation of a target container is realized.

When opening the vacuum pump, the air is direct to be discharged through the extraction opening from the vacuum chamber, because the speed of bleeding is probably to cause the interior year thing of vacuum chamber to remove greatly, or drives to carry the thing or during the vacuum pump is taken out to the dust, damages the life that the sliding vane reduces the pump, and the vacuum pump still has the great problem of noise at work simultaneously.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model overcomes current defect, provides a vacuum pump air exhaust mechanism, can effectively solve the problem in the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a vacuum pump air exhaust mechanism, includes the cylinder body, the inside piston that transversely is equipped with of cylinder body, piston bottom center department is connected with the connecting rod, the end cover is installed at the cylinder body top, the top cap is installed at the end cover top, air inlet and gas outlet have been seted up on the end cover respectively, air inlet and gas outlet one side communicate respectively has inlet channel and air outlet channel, the air inlet with correspond respectively in the gas outlet and be provided with end cap and closure plate, end cap and closure plate top center department all is connected with telescopic machanism, the telescopic machanism top respectively with the air inlet the fixed welding in gas outlet top, inlet channel keeps away from the one end intercommunication of air inlet has the intake pipe, just inlet channel is close to the tip of intake pipe is equipped with the slot.

As an optimal technical scheme of the utility model, the shape of filtering the otter board is character cut in bas-relief, just filter and be equipped with on the otter board with the slot corresponds the cutting of pegging graft.

As a preferred technical scheme of the utility model, telescopic machanism includes the sleeve and pegs graft the movable rod in the sleeve, the sleeve with the movable rod outside cover is equipped with the spring.

As a preferred technical scheme of the utility model, be equipped with in the air inlet spring both ends respectively with the air inlet top the end cap top is contradicted, be equipped with in the gas outlet spring both ends respectively with the gas outlet top the closure plate is contradicted.

As an optimal technical scheme of the utility model, the cylinder body adopts cast iron to make, the inside stereoplasm oxide layer that is equipped with of cylinder body, the air inlet with the end cap shape is trapezoidal.

As an optimal technical scheme of the utility model, the piston both sides through sealed cushion with cylinder body inner wall sliding connection, in the inlet channel with it is equipped with the cavity to filter the corresponding position department of otter board, and the cavity top is sealed through sealed stuff strip.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a filter plate is crossed in the setting, can insert the cavity with filtering the otter board, and the cutting inserts to the slot in to use the sealing plug strip to plug up filter plate's top, filter plate and can avoid the year thing in the air or the vacuum pump is taken out to the dust, to the inside damage that causes of vacuum pump, reach the effect of noise reduction simultaneously.

2. The utility model discloses an at the air inlet with correspond respectively in the gas outlet and be provided with end cap and closure plate, when the piston glides downwards in the cylinder body and is the stroke of breathing in, the end cap is because negative pressure effect downwardly moving, makes the air inlet open and admit air, and the air is inhaled by the intake pipe, and when the piston glides upwards in the cylinder body and is the compression stroke, the air inlet was plugged up to the end cap, and the closure plate received air pressure rebound this moment, made gas outlet and outlet channel intercommunication, made this vacuum pump at during operation noise reduction.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structure view of the filter screen plate of the present invention.

Fig. 3 is a structural view of the telescopic mechanism of the present invention.

Reference numbers in the figures: 1. a cylinder body; 2. a piston; 3. a connecting rod; 4. an end cap; 5. a top cover; 6. an air inlet; 7. An air outlet; 8. an air intake passage; 9. an air outlet channel; 10. a plug; 11. a blocking plate; 12. a telescoping mechanism; 13. An air inlet pipe; 14. a slot; 15. a filter screen plate; 16. cutting; 17. a sleeve; 18. a movable rod; 19. a spring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1-3, a vacuum pump air-extracting mechanism comprises a cylinder body 1, a piston 2 is transversely arranged in the cylinder body 1, a connecting rod 3 is connected to the center of the bottom of the piston 2, the end of the connecting rod 3 is generally driven by a cam mechanism, an end cover 4 is installed on the top of the cylinder body 1, a top cover 5 is installed on the top of the end cover 4, an air inlet 6 and an air outlet 7 are respectively opened on the end cover 4, an air inlet channel 8 and an air outlet channel 9 are respectively communicated with one side of the air inlet 6 and one side of the air outlet 7, a plug 10 and a plug plate 11 are respectively and correspondingly arranged in the air inlet 6 and the air outlet 7, a telescopic mechanism 12 is respectively connected to the centers of the tops of the plug 10 and the plug plate 11, the tops of the telescopic mechanism 12 are respectively fixedly welded to the tops of the air inlet 6 and, and the end part of the air inlet channel 8 close to the air inlet pipe 13 is provided with a slot 14, and a filter screen plate 15 is inserted in the slot 14.

The shape of the filter screen plate 15 is in a concave shape, the filter screen plate 15 is provided with the insert 16 correspondingly inserted into the slot 14, when in use, the filter screen plate 15 can be inserted into the cavity, the insert 16 is inserted into the slot 14, so that the filter screen plate 15 is convenient to install and detach, the telescopic mechanism 12 comprises a sleeve 17 and a movable rod 18 inserted into the sleeve 17, a spring 19 is sleeved outside the sleeve 17 and the movable rod 18, two ends of the spring 19 arranged in the air inlet 6 are respectively abutted against the top of the air inlet 6 and the top of the plug 10, two ends of the spring 19 arranged in the air outlet 7 are respectively abutted against the top of the air outlet 7 and the plug 11, the telescopic mechanism 12 plays a role in guiding the movement of the plug 10 and the plug 11, the cylinder body 1 is made of cast iron, the cylinder body 1 is internally provided with a hard oxide layer, and the hard oxide layer 22 exists, the rigidity and the corrosion and abrasion resistance of the inner wall surface of the cylinder 2 can be obviously improved, the air inlet 6 and the plug 10 are trapezoidal in shape, two sides of the piston 2 are connected with the inner wall of the cylinder body 1 in a sliding mode through sealing rubber gaskets, a cavity is arranged in the air inlet channel 8 and corresponds to the filter screen plate 15, and the top of the cavity is sealed through a sealing plug strip.

For the convenience of understanding the above technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process:

in actual use: the filter screen plate 15 can be inserted into the cavity, the insert 16 is inserted into the slot 14, and the top of the filter screen plate 15 is plugged by the sealing plug strip, when the piston 2 slides downwards in the cylinder 3 to perform an air suction stroke, the plug 10 moves downwards under the action of negative pressure, so that the air inlet 6 is opened to admit air, at the moment, the telescopic mechanism 12 extends to play a guiding role in the movement of the plug 10, the air is sucked by the air inlet pipe 13, the filter screen plate 15 can prevent a load or dust in the air from being pumped into the vacuum pump to damage the inside of the vacuum pump, when the piston 2 slides upwards in the cylinder 3 to perform a compression stroke, the plug 10 plugs the air inlet 6, at the moment, the plug 11 is upwards moved by the air pressure, so that the air outlet 7 is communicated with the air outlet channel 9, and the.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a vacuum pump air exhaust mechanism, includes cylinder body (1), its characterized in that: the cylinder body (1) is internally and transversely provided with a piston (2), the center of the bottom of the piston (2) is connected with a connecting rod (3), the top of the cylinder body (1) is provided with an end cover (4), the top cover (5) is arranged at the top of the end cover (4), the end cover (4) is respectively provided with an air inlet (6) and an air outlet (7), one side of the air inlet (6) and one side of the air outlet (7) are respectively communicated with an air inlet channel (8) and an air outlet channel (9), the air inlet (6) and the air outlet (7) are respectively and correspondingly provided with a plug (10) and a plug plate (11), the centers of the top of the plug (10) and the plug plate (11) are respectively connected with a telescopic mechanism (12), the top of the telescopic mechanism (12) is respectively fixedly welded with the top of the air inlet (6) and the top of the air outlet (7), one end of, and the end part of the air inlet channel (8) close to the air inlet pipe (13) is provided with a slot (14), and a filter screen plate (15) is inserted in the slot (14).

2. A vacuum pump pumping mechanism according to claim 1, wherein: the shape of the filter screen plate (15) is concave, and the filter screen plate (15) is provided with inserting strips (16) correspondingly inserted into the inserting grooves (14).

3. A vacuum pump pumping mechanism according to claim 1, wherein: the telescopic mechanism (12) comprises a sleeve (17) and a movable rod (18) inserted in the sleeve (17), and springs (19) are sleeved on the outer sides of the sleeve (17) and the movable rod (18).

4. A vacuum pump pumping mechanism according to claim 3, wherein: spring (19) both ends that are equipped with in air inlet (6) respectively with air inlet (6) top end cap (10) top is contradicted, spring (19) both ends that are equipped with in gas outlet (7) respectively with gas outlet (7) top closure plate (11) are contradicted.

5. A vacuum pump pumping mechanism according to claim 1, wherein: the cylinder body (1) is made of cast iron, a hard oxide layer is arranged inside the cylinder body (1), and the air inlet (6) and the plug (10) are both trapezoidal in shape.

6. A vacuum pump pumping mechanism according to claim 1, wherein: piston (2) both sides through sealed cushion with cylinder body (1) inner wall sliding connection, in inlet channel (8) with filter plate (15) correspond the position department and be equipped with the cavity, and the cavity top is sealed through sealed stuff plug.