CN112610449A

CN112610449A - Vacuum pump with piston opening and closing control

Info

Publication number: CN112610449A
Application number: CN202011522487.1A
Authority: CN
Inventors: 刘文香
Original assignee: Individual
Current assignee: Shandong Yipeng Energy Development Co.,Ltd.
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-04-06
Anticipated expiration: 2040-12-22
Also published as: CN112610449B

Abstract

The invention relates to the technical field of vacuum pumps, in particular to a vacuum pump with piston opening and closing control, which comprises a pump body, wherein air outlet holes are formed in two sides of the upper end of the pump body, an air gathering cavity is formed in the middle of the pump body, auxiliary air cavities are formed in two sides of the air gathering cavity, an air exhaust channel is formed in the bottom of the air gathering cavity, an air inlet gasket is arranged at the upper end of the air exhaust channel, a main piston is slidably mounted in the air gathering cavity, a through hole is formed in the middle of the main piston, an air outlet gasket is arranged at the upper end of the through hole, the main piston is driven by a driving device and linearly reciprocates in the air gathering cavity, driven pistons are slidably connected in the two auxiliary air cavities. The main piston which moves in a linear reciprocating manner and the two groups of driven pistons which move horizontally in opposite directions are matched to act on the air gathering cavity, so that the pumping efficiency can be greatly improved, the vacuumizing duration can be effectively shortened, the expected negative pressure and vacuum conditions can be easily achieved, and the reaction is accelerated.

Description

Vacuum pump with piston opening and closing control

Technical Field

The invention relates to the technical field of vacuum pumps, in particular to a vacuum pump with piston opening and closing control.

Background

As is well known, a piston type vacuum pump is a device for extracting air from a container to remove the air from the container to obtain a container with a certain degree of vacuum, and is widely used in the field of vacuum pumps.

The invention discloses a piston vacuum pump with the application number of CN201911337496.0, which comprises a pump body, wherein an air inlet end and an air outlet end are arranged on the pump body, the air inlet end is communicated with an inner cavity of the pump body, the air outlet end is communicated with the inner cavity of the pump body, the inner cavity of the pump body is arranged along the vertical direction, an elastic plug body is arranged in the inner cavity of the pump body, the piston vacuum pump further comprises a vertical driving mechanism, the elastic plug body moves up and down along the inner cavity of the pump body under the driving of the vertical driving mechanism, a driving motor drives an eccentric wheel to rotate, and then the elastic plug body is driven to do piston motion in the inner cavity of the pump body to suck air to generate negative pressure.

However, this vacuum pump has disadvantages: the single piston is adopted to suck air, so that the efficiency is low, the time consumption for vacuumizing is long, and even the expected negative pressure and vacuum conditions are difficult to achieve, so that the reaction is difficult to occur.

In view of this, we propose a vacuum pump with piston opening and closing control.

Disclosure of Invention

The present invention is directed to a vacuum pump with piston opening and closing control to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a vacuum pump with piston switching control, includes the pump body, the venthole has all been seted up to the upper end both sides of the pump body, and the gas chamber has been seted up at pump body middle part, the both sides of gas chamber all are equipped with supplementary air cavity, and the bottom of gas chamber is equipped with air exhaust channel, air exhaust channel's upper end is provided with the gasket that admits air, gathers the interior slidable mounting of air cavity and has main piston, the through-hole has been seted up at main piston middle part, and the through-hole upper end is provided with the gasket of giving vent to anger, and main piston is driven by drive arrangement and carries out straight reciprocating motion gathering the air cavity, and two sets of slave pistons intracavity sliding connection have slave piston.

Preferably, a rectangular groove is formed in the upper end of the air gathering cavity, a driving device is arranged in the rectangular groove, the driving device comprises a bridge plate, a push rod, a cross rod, a pressure rod, a guide sleeve, a rotary disc, a stand column and a limit frame, the rotary disc is driven by a driving shaft to rotate, the rotary disc is eccentrically connected with the stand column, the limit frame is sleeved on the stand column and is in sliding fit with the stand column, the guide sleeve is arranged at the lower end of the rotary disc, one end of the push rod is fixedly connected with the limit frame, the other end of the push rod penetrates through the guide sleeve and is fixedly connected with the bridge plate, and the.

Preferably, both ends of the push rod are fixedly connected with cross rods, a cylindrical cavity communicated with the auxiliary air cavity is formed in the two ends of the side wall of the pump body in a whole body, a linkage assembly is arranged in the cylindrical cavity and comprises a moving strip, a first spring and a baffle, one end of the moving strip is fixedly connected with the baffle, and the other end of the moving strip penetrates through the first spring and extends into the auxiliary air cavity to be fixedly connected with the driven piston.

Preferably, the upper end face of the moving strip is provided with a bevel cavity, one end of the pressing rod is fixedly connected with the cross rod, and the other end of the pressing rod extends into the bevel cavity and is in sliding fit with the bevel cavity.

Preferably, the right ends of the air outlet gasket and the air inlet gasket are respectively and rotatably connected to the top of the through hole and the bottom of the air collecting cavity through central shafts, arc-shaped guide rods are inserted into the air outlet gasket and the air inlet gasket in a penetrating mode, and second springs are sleeved on the arc-shaped guide rods.

Compared with the prior art, the invention has the beneficial effects that:

1. the rotary table is driven to rotate by the driving shaft, the stand column is eccentrically arranged on the outer ring of the rotary table, the rotary table can continuously push the limiting frame when rotating, the bottom of the limiting frame is limited by the push rod, the push rod and the pressure rod are driven by the limiting frame to perform linear reciprocating motion in the vertical direction under the guide of the guide sleeve, and the main piston and the push rod synchronously perform linear reciprocating motion;

2. when the pressure lever moves downwards and acts on the inclined cavity, the moving strip is stressed to extrude the first spring and drive the driven piston to approach towards the direction of the gas gathering cavity; when the pressure lever moves upwards and cancels the acting force on the inclined surface cavity, the moving strip drives the driven piston to slide to the original position again under the action of the rebounding force of the first spring;

3. the invention has the advantages that the main piston which does linear reciprocating motion and the two groups of driven pistons which do horizontal opposite motion are matched to act on the air gathering cavity, so that the pumping efficiency can be greatly improved, the vacuumizing time is effectively shortened, the expected negative pressure and vacuum conditions are easily achieved, and the reaction is accelerated.

Drawings

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

fig. 2 is an enlarged schematic view of region a in fig. 1.

Fig. 3 is an enlarged schematic view of the region B in fig. 1.

In the figure: the air pump comprises a pump body 1, an air gathering cavity 101, an auxiliary air cavity 102, an air suction channel 103, an air outlet hole 104, a main piston 2, a driven piston 3, an air outlet gasket 4, an air inlet gasket 5, a bridge plate 6, a push rod 7, a cross rod 8, a pressure rod 9, a guide sleeve 10, a rotary disc 11, a stand column 12, a limiting frame 13, a moving strip 14, a first spring 15, a baffle 16, a central shaft 17, an arc-shaped guide rod 18 and a second spring 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a vacuum pump with piston switching control, which comprises a pump body 1, venthole 104 has all been seted up to the upper end both sides of the pump body 1, air cavity 101 has been seted up at 1 middle part of the pump body, air cavity 101's both sides all are equipped with supplementary air cavity 102, air cavity 101's bottom is equipped with air exhaust channel 103, air exhaust channel 103's upper end is provided with air intake gasket 5, slidable mounting has main piston 2 in air cavity 101, the through-hole has been seted up at main piston 2 middle part, the through-hole upper end is provided with air exhaust gasket 4, and main piston 2 is driven by drive arrangement and is carrying out straight reciprocating motion in air cavity 101, sliding connection has slave piston 3 in two supplementary air cavities 102, two sets of slave piston 3 are driven by the linkage subassembly and carry out. The main piston 2 which does linear reciprocating motion and the two groups of driven pistons 3 which do horizontal opposite motion are matched to act on the air gathering cavity 101, so that the suction efficiency can be greatly improved, the vacuum pumping time is effectively shortened, the expected negative pressure and vacuum conditions are easily achieved, and the reaction is accelerated.

As shown in fig. 1 and 2, a rectangular groove is formed in the upper end of the air collecting cavity 101, a driving device is arranged in the rectangular groove, the driving device comprises a bridge plate 6, a push rod 7, a cross rod 8, a pressure rod 9, a guide sleeve 10, a rotary table 11, an upright post 12 and a limiting frame 13, the rotary table 11 is driven to rotate by a driving shaft, and the driving shaft is driven by a motor. And the turntable 11 is eccentrically connected with the upright post 12, the limit frame 13 is sleeved on the upright post 12 and is in sliding fit with the upright post, the guide sleeve 10 is arranged at the lower end of the turntable 11, one end of the push rod 7 is fixedly connected with the limit frame 13, the other end of the push rod 7 penetrates through the guide sleeve 10 and is fixedly connected with the bridge plate 6, and the bridge plate 6 is fixedly connected with the main piston 2.

When the device is used, firstly, the driving shaft drives the rotary table 11 to rotate, the upright post 12 is eccentrically arranged on the outer ring of the rotary table 11, the rotary table 11 can continuously push the limiting frame 13 through the upright post 12 when rotating, the bottom of the limiting frame 13 is limited by the push rod 7, under the guidance of the guide sleeve 10, the push rod 7 and the press rod 9 are driven by the limiting frame 13 to perform linear reciprocating motion in the vertical direction, and the main piston 2 and the push rod 7 synchronously perform linear reciprocating motion;

as shown in fig. 2, the two ends of the push rod 7 are fixedly connected with a cross rod 8, the two ends of the side wall of the pump body 1 are integrally formed into a cylindrical cavity communicated with the auxiliary air cavity 102, a linkage assembly is arranged in the cylindrical cavity, the linkage assembly comprises a moving strip 14, a first spring 15 and a baffle 16, one end of the moving strip 14 is fixedly connected with the baffle 16, and the other end of the moving strip 14 penetrates through the first spring 15 and extends into the auxiliary air cavity 102 to be fixedly connected with the driven piston 3. The upper end face of the movable strip 14 is provided with a bevel cavity, one end of the pressure lever 9 is fixedly connected with the cross rod 8, and the other end of the pressure lever 9 extends into the bevel cavity and is in sliding fit with the bevel cavity. When the pressure lever 9 moves downwards and acts on the inclined cavity, the moving strip 14 is forced to extrude the first spring 15 and drive the driven piston 3 to approach towards the air gathering cavity 101; when the pressure rod 9 moves upwards and releases the acting force on the inclined cavity, the moving strip 14 drives the driven piston 3 to slide to the original position again under the action of the rebounding force of the first spring 15.

As shown in fig. 2 and 3, the right ends of the air outlet gasket 4 and the air inlet gasket 5 are respectively rotatably connected to the top of the through hole and the bottom of the air collecting cavity 101 through a central shaft 17, arc-shaped guide rods 18 are respectively inserted into the air outlet gasket 4 and the air inlet gasket 5, and second springs 19 are sleeved on the arc-shaped guide rods 18. The arc-shaped guide rod 18 and the second spring 19 are matched for use, so that the air outlet gasket 4 and the air inlet gasket 5 can be automatically reset.

The working principle is as follows: in actual use, firstly, a motor is started, the motor drives a driving shaft to rotate, the driving shaft drives a rotary table 11 to rotate, an upright post 12 is eccentrically arranged on an outer ring of the rotary table 11, the rotary table 11 can continuously push a limiting frame 13 through the upright post 12 when rotating, the bottom of the limiting frame 13 is limited by a push rod 7, under the guidance of a guide sleeve 10, the push rod 7 and a pressure rod 9 are driven by the limiting frame 13 to perform linear reciprocating motion in the vertical direction, and a main piston 2 and the push rod 7 synchronously perform linear reciprocating motion; meanwhile, the two groups of driven pistons 3 are driven by the linkage assembly to synchronously move horizontally and oppositely with the main piston 2, when the main piston 2 slides downwards and the two groups of driven pistons 3 synchronously approach towards the gas gathering cavity 101, gas in the gas gathering cavity 101 is compressed, the gas outlet gasket 4 is opened at the moment, and the gas inlet gasket 5 is closed; when the master piston 2 slides upwards and the two sets of slave pistons 3 synchronously slide to the original positions again, the gas in the gas collecting cavity 101 is diluted, the gas outlet gasket 4 is closed, the gas inlet gasket 5 is opened, and the process is repeated, so that the effect of vacuum suction is achieved.

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. A vacuum pump with piston open-close control, includes pump body (1), its characterized in that: the air outlet holes (104) are formed in two sides of the upper end of the pump body (1), the air gathering cavity (101) is formed in the middle of the pump body (1), the auxiliary air cavities (102) are formed in two sides of the air gathering cavity (101), the air pumping channel (103) is arranged at the bottom of the air gathering cavity (101), the air inlet gasket (5) is arranged at the upper end of the air pumping channel (103), the main piston (2) is slidably mounted in the air gathering cavity (101), the through hole is formed in the middle of the main piston (2), the air outlet gasket (4) is arranged at the upper end of the through hole, the main piston (2) is driven by the driving device and conducts linear reciprocating motion in the air gathering cavity (101), the driven pistons (3) are slidably connected in the two auxiliary air cavities (102), and the two sets of driven pistons (3) are driven by.

2. A vacuum pump with piston opening and closing control as claimed in claim 1, wherein: the upper end of gas gathering chamber (101) has been seted up the rectangular channel, is provided with drive arrangement in the rectangular channel, drive arrangement includes bridge plate (6), push rod (7), horizontal pole (8), depression bar (9), uide bushing (10), carousel (11), stand (12) and spacing frame (13), carousel (11) are driven rotatoryly by the drive shaft, and carousel (11) eccentric connection stand (12), spacing frame (13) cover is established on stand (12) and rather than sliding fit, uide bushing (10) set up the lower extreme at carousel (11), push rod (7) one end fixed connection spacing frame (13), push rod (7) other end runs through uide bushing (10) and fixed connection bridge plate (6), bridge plate (6) fixed connection main piston (2).

3. A vacuum pump with piston opening and closing control according to claim 2, characterized in that: the equal fixedly connected with horizontal pole (8) in both ends of push rod (7), the equal integrated into one piece in pump body (1) lateral wall both ends is provided with the linkage subassembly with the cylindrical cavity of supplementary air cavity (102) intercommunication, the cylindrical cavity intracavity, the linkage subassembly is including removing strip (14), first spring (15) and baffle (16), remove strip (14) one end fixed connection baffle (16), remove strip (14) other end and run through first spring (15) and stretch into supplementary air cavity (102) fixed connection slave piston (3).

4. A vacuum pump with piston opening and closing control according to claim 3, characterized in that: the upper end face of the movable strip (14) is provided with a bevel cavity, one end of the pressing rod (9) is fixedly connected with the cross rod (8), and the other end of the pressing rod (9) extends into the bevel cavity and is in sliding fit with the bevel cavity.

5. A vacuum pump with piston open and close control according to claim 4, characterized in that: the right-hand member of gasket (4) and the gasket (5) of admitting air all rotates respectively through center pin (17) and connects the top at the through-hole and the bottom of air gathering chamber (101) of admitting air, and the gasket (4) of admitting air and the gasket (5) of admitting air all alternate arc guide arm (18), and the cover is equipped with second spring (19) on arc guide arm (18).