CN217976503U

CN217976503U - Reciprocating vacuum pump with large air extraction amount

Info

Publication number: CN217976503U
Application number: CN202221640739.5U
Authority: CN
Inventors: 刘琴; 陈君
Original assignee: Jiangsu Asia Pacific Industrial Pump Technology Development Co ltd
Current assignee: Jiangsu Asia Pacific Industrial Pump Technology Development Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-12-06
Anticipated expiration: 2032-06-28

Abstract

The utility model is suitable for a vacuum pump technical field provides a reciprocating vacuum pump of big air extraction, including the pump body, cylinder, piston, driving motor, crank link mechanism, admission valve, discharge valve, compression casing and turbine casing, this kind has the cylinder in the pump body, sliding connection has the piston in the cylinder, and wherein driving motor connects the piston rod through the transmission of crank link mechanism, and then drives the piston rod and move, inhales and exhausts through the removal of piston rod; the air inlet valve and the air outlet valve are both one-way valves, the air inlet valve is used for air inlet, and the air outlet valve is used for air outlet, so that air extraction work is carried out; and the air inlet pipe of the air inlet valve and the exhaust pipe of the exhaust valve are respectively provided with the compression shell and the turbine shell, the air inlet speed can be increased when the compression impeller rotates, the turbine impeller is blown by gas when the gas is discharged, the turbine impeller drives the compression impeller through the transmission shaft, the air inlet and outlet speed is increased in a circulating manner, the air exhaust efficiency is higher, and the use cost is lower.

Description

Reciprocating vacuum pump with large air extraction amount

Technical Field

The utility model belongs to the technical field of the vacuum pump, especially, relate to a reciprocating vacuum pump of big air extraction volume.

Background

In the field of vacuum pump technology, a vacuum pump refers to a device or apparatus that uses mechanical, physical, chemical or physicochemical methods to evacuate a container to obtain a vacuum. In general, a vacuum pump is a device for improving, generating and maintaining a vacuum in a certain closed space by various methods. Vacuum pumps can be basically classified into two types, i.e., a gas trap pump and a gas transfer pump, according to the operating principle of the vacuum pump. The reciprocating vacuum pump (also called piston vacuum pump) is a dry vacuum pump; it relies on the reciprocating motion of a piston within a cylinder to draw in and exhaust gas.

The reciprocating vacuum pump of today is lower in the efficiency of bleeding when using, and it is comparatively inconvenient to use, and reciprocating vacuum pump utilizes piston reciprocating motion simultaneously, and the life of piston rod is lower, causes present reciprocating vacuum pump use cost to rise.

SUMMERY OF THE UTILITY MODEL

The utility model provides a reciprocating vacuum pump of big air extraction volume, the reciprocating vacuum pump that aims at mentioning in solving above-mentioned background is lower in the efficiency of bleeding when using, uses comparatively inconveniently, the lower problem of life of piston rod.

The utility model discloses a realize like this, a reciprocating vacuum pump of big extraction rate, including the pump body, cylinder, admission valve, discharge valve, compression casing and turbine casing.

The air cylinder is arranged in the pump body, and the air inlet valve and the air outlet valve which are communicated with the air cylinder are arranged in the pump body.

And the air inlet valve and the exhaust valve are both one-way valves, and an air inlet pipe and an exhaust pipe are respectively arranged on the air inlet valve and the exhaust valve.

The turbine compressor is characterized in that a compression impeller is rotatably arranged in the compression shell, a turbine impeller is rotatably arranged in the turbine shell, and the compression impeller is in transmission connection with the turbine impeller through a transmission shaft.

The compression shell is provided with an air inlet flow passage, the air inlet flow passage is connected with the air inlet pipe through a flange, and the air inlet flow passage is a diffusion flow passage.

The turbine shell is provided with an air outlet flow channel, and the air outlet flow channel is connected with the exhaust pipe through a flange.

Preferably, the compression shell is provided with an air inlet.

The turbine shell is provided with an air outlet.

Preferably, the device also comprises a driving motor, and the pump body and the driving motor are both arranged on the base plate.

The cylinder is provided with a sliding groove.

And a piston is connected in the cylinder in a sliding manner, and a piston rod connected with the sliding groove in a sliding manner is installed on the piston.

The output end of the driving motor is in transmission connection with the piston rod through a crank connecting rod mechanism.

Preferably, the inner walls of the two sides of the sliding groove are filled with filling materials through clamping grooves, and the sliding groove is embedded with two sealing rings.

Preferably, two limiting heads with protrusions are mounted on the outer wall of the air cylinder, and the two limiting heads are arranged on two sides of the piston rod.

Preferably, the driving motor is provided with a motor shell, and the upper surface of the motor shell is provided with heat dissipation holes.

And the upper surface of the motor shell is connected with a filter screen through a sliding chute in a sliding manner.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a reciprocating vacuum pump with large air suction volume, wherein the pump body is internally provided with an air cylinder, the air cylinder is connected with a piston in a sliding way, a driving motor is connected with a piston rod through the transmission of a crank link mechanism, and then the piston rod is driven to move, and air suction and exhaust are carried out through the movement of the piston rod; the air inlet valve and the air outlet valve are both one-way valves, the air inlet valve is used for air inlet, and the air outlet valve is used for air outlet, so that air exhaust work is performed; the compression shell and the turbine shell are respectively arranged on the air inlet pipe of the air inlet valve and the exhaust pipe of the exhaust valve, a compression impeller is arranged in the compression shell, the air inlet speed can be improved when the compression impeller rotates, the turbine impeller is blown by gas when the gas is exhausted, the turbine impeller drives the compression impeller through a transmission shaft, the air inlet and outlet speed is further improved in a circulating mode, and the air exhaust efficiency is higher; the pump body is provided with a sliding groove in sliding connection with the piston rod, the inner wall of the sliding groove is filled with filler, and two sealing rings are embedded in the sliding groove, so that the sealing performance of the piston rod is improved; the circulating reciprocating pump is simple in structure and convenient to operate, air inlet and outlet speeds are improved through the compression impeller and the turbine impeller, and air extraction efficiency is higher.

Drawings

Fig. 1 is an overall structural schematic diagram of the present invention;

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

FIG. 3 is a schematic view of the turbine housing of the present invention;

fig. 4 is an enlarged view of the utility model at a in fig. 1;

in the figure: 1. a pump body; 2. a cylinder; 201. a sliding groove; 202. a filler; 203. a seal ring; 204. a limiting head; 3. a piston; 301. a piston rod; 4. a drive motor; 401. a motor casing; 402. heat dissipation holes; 403. filtering with a screen; 5. a crank link mechanism; 6. an intake valve; 601. an air inlet pipe; 7. an exhaust valve; 701. an exhaust pipe; 8. compressing the shell; 801. compressing the impeller; 802. an air inlet flow channel; 803. an air inlet; 9. a turbine housing; 901. a turbine wheel; 902. an air outlet flow channel; 903. an air outlet; 10. a drive shaft; 11. a backing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a reciprocating vacuum pump of big air extraction, which comprises a pump body 1, the cylinder 2, admission valve 6, discharge valve 7, compression housing 8 and turbine housing 9, be provided with cylinder 2 in the pump body 1, install admission valve 6 and discharge valve 7 that all communicate cylinder 2 in the pump body 1, still include driving motor 4, the pump body 1 is all installed on backing plate 11 with driving motor 4, sliding tray 201 has been seted up on the cylinder 2, sliding connection has piston 3 in the cylinder 2, piston rod 301 of sliding connection sliding tray 201 is installed to piston 3, driving motor 4's output passes through 5 transmission connection piston rod 301 of crank link mechanism, admission valve 6 and discharge valve 7 are the check valve, install intake pipe 601 and blast pipe 701 on admission valve 6 and the discharge valve 7 respectively.

Wherein, when the output of driving motor 4 rotated, drive piston rod 301 and piston 3 through crank link mechanism 5 and carry out reciprocating motion in cylinder 2, when piston 3 kept away from admission valve 6 and discharge valve 7, external pressure was breathed in by admission valve 6 and is got into in the cylinder 2 simultaneously, when piston 3 was close to admission valve 6 and discharge valve 7, discharged gas by cylinder 2 through discharge valve 7, but admission valve 6 and discharge valve 7 that are the check valve are convenient for admit air and can exhaust, it is more convenient to bleed.

The internal rotation of the compression shell 8 is provided with a compression impeller 801, the internal rotation of the turbine shell 9 is provided with a turbine impeller 901, the compression impeller 801 is in transmission connection with the turbine impeller 901 through a transmission shaft 10, the compression shell 8 is provided with an inlet flow channel 802, the inlet flow channel 802 is connected with an inlet pipe 601 through a flange, the inlet flow channel 802 is a diffusion flow channel, the turbine shell 9 is provided with an outlet flow channel 902, the outlet flow channel 902 is connected with an exhaust pipe 701 through a flange, the compression shell 8 is provided with an air inlet 803, and the turbine shell 9 is provided with an air outlet 903.

When the cylinder 2 inhales, gas enters from the gas inlet 803, and simultaneously the gas drives the compression impeller 801 to rotate, and flows into the gas inlet pipe 601 through the gas inlet flow channel 802, so that the gas pressure is improved, and further, the flowing speed of the gas is accelerated.

The inner walls of the two sides of the sliding groove 201 are filled with filler 202 through clamping grooves, and two sealing rings 203 are embedded on the sliding groove 201.

In addition, the filling material 202 reduces the friction force between the piston rod 301 and the sliding groove 201, the service life of the piston rod 301 is prolonged, and meanwhile, the two sealing rings 203 improve the sealing performance of the sliding groove 201, so that the situations such as air leakage and the like are not easy to occur.

Two limit heads 204 with protrusions are installed on the outer wall of the cylinder 2, and the two limit heads 204 are arranged on two sides of the piston rod 301.

In addition, the limiting head 204 can limit the moving position of the piston rod 301, so that the piston rod 301 is prevented from falling off, and the safety is higher.

Install motor casing 401 on driving motor 4, seted up louvre 402 on the upper surface of motor casing 401, there is filter screen 403 motor casing 401's upper surface through spout sliding connection.

Further, motor casing 401 can be used to protect driving motor 4, and louvre 402 is used for discharging the heat of driving motor 4 during operation, prevents that the inside heat of motor casing 401 from piling up, prolongs driving motor 4's life.

The utility model discloses a theory of operation and use flow: the utility model discloses install the back, drive piston rod 301 and piston 3 and carry out reciprocating motion in cylinder 2 through crank link mechanism 5 during the output of driving motor 4 rotates, when admission valve 6 and discharge valve 7 were kept away from to piston 3, external pressure is breathed in by admission valve 6 and gets into in the cylinder 2 simultaneously, when piston 3 is close to admission valve 6 and discharge valve 7, discharge gas by cylinder 2 through discharge valve 7, when cylinder 2 breathes in, gas is got into by air inlet 803, simultaneously gas drives compression impeller 801 and rotates, flow into intake pipe 601 through inlet channel 802, improve gas pressure, and then accelerate gaseous flow velocity, when cylinder 2 exhausts, gas gets into inside turbine housing 9 by blast pipe 701, it rotates to drive turbine impeller 901, gas is discharged by gas outlet 903, turbine impeller 901 drives compression impeller 801 through transmission shaft 10 and rotates this moment, the reciprocal entering of circulation and exhaust gas, the efficiency of bleeding is improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A reciprocating vacuum pump with large pumping capacity is characterized in that: comprises a pump body (1), a cylinder (2), an air inlet valve (6), an air outlet valve (7), a compression shell (8) and a turbine shell (9);

an air cylinder (2) is arranged in the pump body (1), and the air inlet valve (6) and the air outlet valve (7) which are communicated with the air cylinder (2) are arranged in the pump body (1);

the air inlet valve (6) and the exhaust valve (7) are both one-way valves, and an air inlet pipe (601) and an exhaust pipe (701) are respectively arranged on the air inlet valve (6) and the exhaust valve (7);

a compression impeller (801) is rotatably mounted in the compression shell (8), a turbine impeller (901) is rotatably mounted in the turbine shell (9), and the compression impeller (801) is in transmission connection with the turbine impeller (901) through a transmission shaft (10);

an air inlet flow channel (802) is arranged on the compression shell (8), the air inlet flow channel (802) is connected with the air inlet pipe (601) through a flange, and the air inlet flow channel (802) is a diffusion flow channel;

be provided with air outlet flow channel (902) on turbine housing (9), air outlet flow channel (902) is through flange joint blast pipe (701).

2. A high-suction-rate reciprocating vacuum pump according to claim 1, characterized in that: an air inlet (803) is formed in the compression shell (8);

and the turbine shell (9) is provided with an air outlet (903).

3. A high-suction-rate reciprocating vacuum pump according to claim 1, characterized in that: the pump body (1) and the driving motor (4) are both arranged on the base plate (11);

a sliding groove (201) is formed in the cylinder (2);

a piston (3) is connected in the cylinder (2) in a sliding manner, and a piston rod (301) which is connected with the sliding groove (201) in a sliding manner is installed on the piston (3);

the output end of the driving motor (4) is in transmission connection with the piston rod (301) through a crank connecting rod mechanism (5).

4. A high-suction-rate reciprocating vacuum pump according to claim 3, wherein: the inner walls of the two sides of the sliding groove (201) are filled with filling materials (202) through clamping grooves, and two sealing rings (203) are embedded on the sliding groove (201).

5. A high pumping capacity reciprocating vacuum pump according to claim 3, wherein: two limiting heads (204) with protrusions are mounted on the outer wall of the air cylinder (2), and the two limiting heads (204) are arranged on two sides of the piston rod (301).

6. A high pumping capacity reciprocating vacuum pump according to claim 3, wherein: a motor shell (401) is mounted on the driving motor (4), and a heat dissipation hole (402) is formed in the upper surface of the motor shell (401);

and the upper surface of the motor shell (401) is connected with a filter screen (403) through a sliding groove in a sliding manner.