CN214944794U

CN214944794U - Multi-rotor composite integrated vacuum pump

Info

Publication number: CN214944794U
Application number: CN202120696205.3U
Authority: CN
Inventors: 林瀚; 席韶妤; 杨茂峰
Original assignee: Yantai Volm Vacuum Technology Co ltd
Current assignee: Yantai Volm Vacuum Technology Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-11-30
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses a compound one-piece type vacuum pump of many rotors, including the mobile internal compression rotor and the slide valve pole of the inside integration of slide valve body and slide valve body, eccentric settings between internal compression rotor and the pump shaft simultaneously, the synchronous key connection of axle head of pump shaft has synchronous rotor module, and secondly slide valve body's left side integration is provided with the cylinder, and installs one-way airflow circulation opposite direction's suction valve and air outlet valve in the left side of cylinder to the inside of cylinder is provided with synchronous activity and pushes away compressed gas's compression piston and piston push rod, and piston push rod in synchronous rotor module and the cylinder constitutes synchronous transmission structure simultaneously. This compound one-piece type vacuum pump of many rotors makes high whole vacuum effect of taking out through the cooperation of sliding valve body and cylinder compression structure, and the eccentric actuating structure of connecting rod of cylinder equipment and the eccentric rotor effort of sliding valve body offset simultaneously, effectively alleviates the vibrations influence of device.

Description

Multi-rotor composite integrated vacuum pump

Technical Field

The utility model relates to a vacuum pump correlation technique field specifically is a compound one-piece type vacuum pump of many rotors.

Background

The vacuum pump can compress gas through the drive of a mechanical structure, so that the air on the other side is relatively pumped into a vacuum state, the vacuum pump is diversified, and the vacuum pump with a common rotor structure comprises a roots rotor vacuum pump, a spiral rotor vacuum pump, a special rotary vane vacuum pump, a slide valve vacuum pump and the like.

Vacuum pumps with different rotor structures have different advantages and disadvantages, and the rotor structure of a slide valve vacuum pump similar to the slide valve vacuum pump is eccentrically movable when in operation, so that the slide valve vacuum pump can generate larger vibration due to eccentric rotating acting force when in operation, for example, a slide valve vacuum pump damping device with the Chinese patent publication No. CN201241834 is provided with a corresponding spring structure on a base for buffering in order to reduce the vibration influence of the slide valve vacuum pump, but the treatment mode is only temporary and permanent, the eccentric movable acting force still exists, when the device runs at high power, larger vibration still can be generated, and meanwhile, the vibration phenomenon influenced by the unstable driving structure also exists on a cylinder vacuum pump driven by a connecting rod structure, the connecting rod structure not only needs eccentric driving, but also has large occupied space of the external volume, and is not convenient for high-power operation due to the limitation of factors such as vibration, affecting the maximum evacuation effect of the device.

Aiming at the problems, the novel design is carried out on the basis of the original multi-rotor composite integrated vacuum pump.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound one-piece type vacuum pump of many rotors to solve and to provide among the above-mentioned background art that the eccentric drive structure of what cylinder vacuum pump of slide valve vacuum pump takes place great vibrations easily, receives the high-power operation of being not convenient for of vibrations influence, reduces the problem of evacuation effect.

In order to achieve the above object, the utility model provides a following technical scheme: a multi-rotor composite integrated vacuum pump comprises a slide valve body, a movable internal compression rotor and a slide valve rod which are integrated in the slide valve body, wherein an air inlet and an exhaust valve which form a compressed air flow passage are respectively arranged above the upper end and the right side of the slide valve body, and the internal compression rotor and a pump shaft are eccentrically arranged;

the shaft end synchronous key of the pump shaft is connected with a synchronous rotor module;

secondly, a cylinder is integrally arranged on the left side of the sliding valve body, an air suction valve and an air outlet valve which have opposite one-way airflow flowing directions are arranged on the left side of the cylinder, and a compression piston and a piston push rod which synchronously and movably push compressed air are arranged in the cylinder;

meanwhile, the synchronous rotor module and a piston push rod in the cylinder form a synchronous transmission structure.

Preferably, the slide valve body and the cylinder are integrally welded with an integrated bottom plate below the slide valve body and the cylinder, and shock absorption pads are uniformly distributed on the ground of the integrated bottom plate.

Preferably, an airflow passage is formed between the air inlet of the slide valve body and the air outlet valve of the air cylinder through a communicating pipe, and the whole compressed air sequentially passes through the air suction valve, the air outlet valve, the air inlet and the exhaust valve to form an integrated compression and vacuum-pumping flow.

Preferably, the synchronous rotor module comprises an external driving rotor, an eccentric shaft and a transmission connecting rod, the external shaft ends of the external driving rotor and the pump shaft are connected through keys to form a synchronous transmission structure, and the external driving rotor and the internal compression rotor are arranged eccentrically relatively.

Preferably, the eccentric shaft is eccentrically disposed at an outer side of the outer driving rotor, and an eccentric position of the eccentric shaft and an eccentric position of the inner compression rotor are symmetrical to each other at the outer side of the outer driving rotor.

Preferably, the transmission connecting rod forms a rotating structure at the outer side of the eccentric shaft, and the transmission connecting rod and the side end of the piston push rod are connected through a hinge to form a crank connecting rod driving structure.

Preferably, the piston push rod forms a limiting sliding structure at the side end of the cylinder through a limiting sliding rail, and the limiting sliding rail is directly welded to the shell of the sliding valve body in a compact mode.

Compared with the prior art, the beneficial effects of the utility model are that: the multi-rotor composite integrated vacuum pump is provided with a plurality of rotors,

1. the synchronous rotor module is matched with the inner compression rotor for synchronous eccentric driving, the eccentric shaft at the positions of the inner compression rotor and the outer drive rotor can offset the eccentric acting force of the inner compression rotor and the outer drive rotor to a certain extent through relative eccentric rotation, and meanwhile, the compression piston synchronously driven by the synchronous rotor module through a connecting rod structure is opposite to the acting force of the inner compression rotor in the left and right directions, so that the synchronous driving work of the sliding valve body and the cylinder is kept, and the vibration phenomenon in the device is effectively relieved from the source;

2. through the synchronous drive of above-mentioned synchronous rotor module and connecting rod structure, can make and to cooperate between sliding valve body and the cylinder and operate, need not extra drive arrangement, inside whole casing was directly placed in to the connecting rod structure, when the increase device holding surface helped keeping stable, solve the too big problem of single cylinder vacuum pump structure area occupied, cooperation sliding valve body make full use of drive space, carry out the precompression through the cylinder to gas simultaneously and handle, when generating the vacuum, keep higher gas compression transfer efficiency.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic structural view of the synchronous rotor module and the piston rod of the present invention;

FIG. 3 is a schematic structural view of the synchronous rotor module and the internal compression rotor of the present invention;

FIG. 4 is a schematic front sectional view of the inner compression rotor according to the present invention;

fig. 5 is a schematic view of the shock pad of the present invention.

In the figure: 1. a spool valve body; 2. an inner compression rotor; 3. a spool rod; 4. an air inlet; 5. an exhaust valve; 6. a pump shaft; 7. a synchronous rotor module; 71. an outer drive rotor; 72. an eccentric shaft; 73. a transmission connecting rod; 8. a cylinder; 9. an air intake valve; 10. an air outlet valve; 11. a compression piston; 12. a piston push rod; 13. an integrated base plate; 14. a shock pad; 15. a communicating pipe; 16. and limiting sliding rails.

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. 1-5, the present invention provides a technical solution: a multi-rotor composite integrated vacuum pump comprises a slide valve body 1, a movable internal compression rotor 2 and a slide valve rod 3 which are integrated in the slide valve body 1, wherein an air inlet 4 and an exhaust valve 5 which form a compressed air flow passage are respectively arranged above the upper end and the right side of the slide valve body 1, and the internal compression rotor 2 and a pump shaft 6 are eccentrically arranged;

the shaft end synchronous key of the pump shaft 6 is connected with a synchronous rotor module 7;

secondly, a cylinder 8 is integrally arranged on the left side of the sliding valve body 1, an air suction valve 9 and an air outlet valve 10 which have opposite one-way airflow flowing directions are arranged on the left side of the cylinder 8, and a compression piston 11 and a piston push rod 12 which synchronously and movably push compressed air are arranged in the cylinder 8;

meanwhile, the synchronous rotor module 7 and the piston push rod 12 in the cylinder 8 form a synchronous transmission structure.

The whole of the sliding valve body 1 and the cylinder 8 and the integrated bottom plate 13 below form a welding integrated structure, shock absorption pads 14 are uniformly distributed on the ground of the integrated bottom plate 13, and the sliding valve body 1 and the cylinder 8 form an integrated pump body, so that the stability of the integrated structure is improved.

An airflow passage is formed between the air inlet 4 of the slide valve body 1 and the air outlet valve 10 of the air cylinder 8 through a communicating pipe 15, the whole compressed air sequentially passes through the air suction valve 9, the air outlet valve 10, the air inlet 4 and the exhaust valve 5 to form a whole compression and vacuum-pumping flow, and the air cylinder 8 and the slide valve body 1 are matched for use, so that the auxiliary work can be carried out by utilizing a compression stroke section of the air cylinder 8 besides the driving compression of the slide valve body 1.

The synchronous rotor module 7 comprises an external driving rotor 71, an eccentric shaft 72 and a transmission connecting rod 73, the external driving rotor 71 and the external shaft end of the pump shaft 6 form a synchronous transmission structure through key connection, and the external driving rotor 71 and the internal compression rotor 2 are relatively eccentrically arranged, so that the sliding valve body 1 and the cylinder 8 can be synchronously driven through the multi-rotor structure of the external driving rotor 71 and the internal compression rotor 2.

The eccentric shaft 72 is eccentrically arranged on the outer side of the outer driving rotor 71, and the eccentric position of the eccentric shaft 72 and the eccentric position of the inner compression rotor 2 are mutually symmetrical on the outer side of the outer driving rotor 71, so that when the eccentric shaft 72 and the inner compression rotor 2 perform eccentric motion, mutual eccentric acting force can be counteracted in a certain reverse direction, and the device vibration phenomenon caused by the eccentric motion is reduced.

The transmission connecting rod 73 constitutes a rotating structure at the outside of the eccentric shaft 72, and the transmission connecting rod 73 and the side end of the piston push rod 12 constitute a crank-link driving structure by hinge connection, and the synchronous driving of the slide valve body 1 and the compression piston 11 at the cylinder 8 is maintained by the transmission connecting rod 73.

Piston push rod 12 passes through spacing slide rail 16 at the side of cylinder 8 and constitutes spacing sliding structure, and the direct compactification of spacing slide rail 16 welds in the casing department of slide valve body 1, and piston push rod 12 and synchronous rotor module 7's movable structure are located between slide valve body 1 and the cylinder 8 increase overall area and keep stable the time, effectively utilize inside activity space.

The working principle is as follows: when the multi-rotor composite integrated vacuum pump is used, as shown in fig. 1-5, the pump shaft 6 can be controlled and driven by a driving device such as an adaptive motor or a diesel engine, and during the use of the device, the pump shaft 6 can directly drive the inner compression rotor 2 in the slide valve body 1 and the outer driving rotor 71 of the outer synchronous rotor module 7 to synchronously rotate, and the outer driving rotor 71 synchronously drives the transmission connecting rod 73 eccentrically through the outer eccentric shaft 72 during rotation, so that the piston push rod 12 reciprocates along the limit slide rail 16, and the compression piston 11 is pushed and extruded in the cylinder 8 in a reciprocating manner.

In the using process of the device, as shown in fig. 1 and 4, when the inner compression rotor 2 eccentrically rotates outside the pump shaft 6, the inner compression rotor rotates counterclockwise in the direction of fig. 1, so that the compression driving of the gas in the right area can be maintained, and the left side of the inner compression rotor 2 is continuously supplemented with the gas from the gas inlet 4, here, because the gas inlet 4 is connected with the gas outlet valve 10 of the cylinder 8 through the communicating pipe 15, when the compression piston 11 pushes the compressed air to the left in the cylinder 8 in fig. 1, the gas which is preliminarily compressed by the compression piston 11 can be supplemented to the gas inlet 4, which is helpful to improve the maximum compression effect, and simultaneously, because the deflection position of the inner compression rotor 2 and the deflection position of the eccentric shaft 72 are symmetrical to each other when the pump shaft 6 rotates, the left-right displacement of the inner compression rotor 2 is also opposite to the displacement of the compression piston 11, so that the unstable acting force caused by the eccentric rotation can be counteracted to a certain extent, the vibration phenomenon of the whole device is effectively reduced, meanwhile, the integrated structure of the sliding valve body 1 and the air cylinder 8 relatively increases the supporting surface of the device, and the vibration and noise phenomenon of the device can be effectively reduced by matching with the shock absorption pad 14 of the integrated bottom plate 13, and the content which is not described in detail in the specification belongs to the prior art which is well known by a person skilled in the art.

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 compound one-piece type vacuum pump of many rotors, includes movable internal compression rotor and the slide valve pole of the inside integration of slide valve body and slide valve body, and the upper end of slide valve body and right side top are provided with air inlet and the discharge valve that constitutes compressed air flow path respectively, and eccentric settings between internal compression rotor and the pump shaft simultaneously, its characterized in that:

2. A multiple rotor composite integrated vacuum pump according to claim 1, wherein: the slide valve body and the air cylinder are integrally welded with an integrated bottom plate below the slide valve body and the air cylinder to form an integrated welding structure, and shock absorption pads are uniformly distributed on the ground of the integrated bottom plate.

3. A multiple rotor composite integrated vacuum pump according to claim 1, wherein: an air flow passage is formed between the air inlet of the slide valve body and the air outlet valve of the air cylinder through a communicating pipe, and the whole compressed air sequentially passes through the air suction valve, the air outlet valve, the air inlet and the air exhaust valve to form an integrated compression and vacuum-pumping process.

4. A multiple rotor composite integrated vacuum pump according to claim 1, wherein: the synchronous rotor module comprises an external driving rotor, an eccentric shaft and a transmission connecting rod, the external driving rotor and the external shaft end of the pump shaft form a synchronous transmission structure through key connection, and the external driving rotor and the internal compression rotor are arranged eccentrically relatively.

5. A multiple rotor composite integrated vacuum pump according to claim 4, wherein: the eccentric shaft is eccentrically arranged on the outer side of the outer driving rotor, and the eccentric position of the eccentric shaft and the eccentric position of the inner compression rotor are mutually symmetrical on the outer side of the outer driving rotor.

6. A multiple rotor composite integrated vacuum pump according to claim 4, wherein: the transmission connecting rod forms a rotating structure at the outer side of the eccentric shaft, and the transmission connecting rod is connected with the side end of the piston push rod through a hinge to form a crank connecting rod driving structure.

7. A multiple rotor composite integrated vacuum pump according to claim 1, wherein: the piston push rod forms a limiting sliding structure at the side end of the cylinder through a limiting sliding rail, and the limiting sliding rail is directly and compactly welded on the shell of the sliding valve body.