CN211738104U

CN211738104U - Vacuum mechanical valve

Info

Publication number: CN211738104U
Application number: CN202020219029.XU
Authority: CN
Inventors: 吴一瑶; 辛元江; 李林全; 王保
Original assignee: Zhejiang Zhengbo Intelligent Machinery Co Ltd
Current assignee: Zhejiang Zhengbo Intelligent Machinery Co Ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-10-23
Anticipated expiration: 2030-02-27

Abstract

The utility model relates to the field of vacuum valves, and discloses a vacuum mechanical valve, which comprises a valve body (1) and a valve core (2), wherein the valve body (1) is provided with a working channel (11) connected with a vacuum chamber and a first connecting channel (12) connected with a negative pressure source, and the first connecting channel (12) is mutually communicated with the working channel (11); the valve body (1) is provided with an electromagnetic valve (3) and an air cylinder (15); the valve body (1) is also provided with a second connecting channel (13), the valve core (2) is provided with a vent hole (21) matched with the valve body (1), and the second connecting channel (13) is communicated or separated with the working channel (11) through the vent hole (21). The utility model discloses be provided with exhaust structure to reduce the probability that impurity such as dust enters into in the vacuum pump, reduce the probability of its damage, and operating condition regulates and control better, and it is nimble more convenient to use. The vacuum valve is convenient to clean through the detachable arrangement of the sealing end cover, and the service life of the vacuum valve is prolonged.

Description

Vacuum mechanical valve

Technical Field

The utility model relates to a field vacuum valve field especially relates to a vacuum mechanical valve.

Background

The vacuum valve is used for changing the direction of air flow, adjusting the magnitude of air flow and cutting off or connecting a vacuum system element of a pipeline in a vacuum system, a traditional vacuum valve is not provided with a cleaning channel, and after the traditional vacuum valve is used for a certain time, impurities enter the interior of the vacuum valve to influence the effect and the service life of the valve.

And because the vacuum pump is arranged for vacuum pumping, and an exhaust device is not arranged, the vacuum chamber is always kept in a negative pressure state, and the negative pressure state also influences the disassembly of the vacuum valve. Meanwhile, the condition of maintaining the negative pressure state needs to be relieved by cutting off the negative pressure source, otherwise, the working state of the vacuum chuck is difficult to relieve, but the direct cutting off of the negative pressure source easily causes suck-back to influence the service life of the vacuum pump, and the low pressure in the vacuum pump is easier to enter dust or other impurities, so that the electromagnetic vacuum valve for solving the defects is needed.

Disclosure of Invention

The utility model discloses to keep negative pressure state, difficult clear shortcoming among the prior art always, provide a vacuum mechanical valve.

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

a vacuum mechanical valve comprises a valve body and a valve core arranged in the valve body in a sliding manner, wherein the valve body is provided with a working channel connected with a vacuum chamber and a first connecting channel connected with a negative pressure source, and the first connecting channel is communicated with the working channel; the valve body is provided with an electromagnetic valve, the valve body is also provided with an air cylinder, the electromagnetic valve is electrically connected with the air cylinder, and the air cylinder is in transmission connection with the valve core; the valve body is also provided with a second connecting channel, the valve core is provided with a vent matched with the valve body, and the second connecting channel is communicated or separated with the working channel through the vent. The second connecting channel is communicated with the atmosphere, the atmosphere enters the vacuum chamber through the working channel, the negative pressure state of the vacuum chamber can be relieved at once, and the defect that the negative pressure is always kept in the cavity when the traditional vacuum valve is not exhausted in time after being installed is overcome.

As the preferred, demountable installation has end cover on the valve body, and end cover locates the tip of valve body, and end cover's lateral wall and the laminating of valve body inner wall and corresponding first connecting channel are equipped with air exhaust passage. The sealing end cover that the opposite side was equipped with, sealing end cover passes through the bolt or other detachable modes are fixed, can dismantle at any time and clean in the vacuum valve. When the cylinder on the maintenance of equipment, must amputate the air supply earlier, go on again after guaranteeing other unifications inside and outside, after traditional solenoid valve debris got into the solenoid valve, the sealing washer had lost the effect, can't change, the utility model provides a solenoid valve gets into behind the debris, owing to be the business turn over of solenoid valve control cylinder, the cylinder can clean at any time as usual.

Preferably, the suction channel communicates with the first connecting channel and the working channel, respectively. The air exhaust passage can be blocked by the sealing plug, and the air exhaust passage and the first connecting passage are in a normally communicated state.

Preferably, the end part of the valve core is provided with a sealing plug, and when the valve core slides to the end surface of the sealing plug pressed on the inner side of the sealing end cover, the sealing plug blocks the air exhaust channel. The sealing plug is used for cutting off the first connecting channel from being communicated with the working channel, the solenoid valve controls the cylinder to drive the valve core to slide, the valve core driven by the control cylinder is controlled to do reciprocating motion by electrifying and powering off the solenoid valve, and the vacuum pumping state or the negative pressure state can be switched or released by the motion of the valve core.

Preferably, the valve body further comprises a guide sleeve, the valve core is installed in the guide sleeve in a matched mode, a ventilation cavity is formed between the valve core and the guide sleeve, and the sealing plug is tightly attached to the guide sleeve. The guide sleeve is sleeved on the valve core to play a role in connection and fixation. Meanwhile, the sealing plug is limited and guided, and a cavity is formed between the sealing plug and the valve core for air to pass through.

Preferably, the side wall of the sealing plug slides against the guide sleeve.

Preferably, the vent hole is arranged on the side wall of one end of the vent cavity, and the valve core slides to the vent hole and extends out of the guide sleeve to enable the second connecting channel to be communicated with the working channel. When the vent hole does not extend out of the guide sleeve, the second connecting channel is disconnected from the working channel and cannot be connected with atmosphere, so that a sealing effect is achieved, and when the vent hole extends out, the second connecting channel is communicated with the working channel and is connected with atmosphere to relieve a negative pressure state.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect:

the utility model discloses be provided with exhaust structure to reduce the probability that impurity such as dust enters into in the vacuum pump, thereby reduce the probability of its damage, and operating condition regulates and control better, and it is nimble more convenient to use.

The vacuum valve can be cleaned conveniently through the detachable arrangement of the sealing end cover, after sundries of the traditional solenoid valve enter the solenoid valve, the sealing ring loses effect and cannot be replaced, after the sundries enter the solenoid valve, the solenoid valve can clean at any time as the solenoid valve controls the air cylinder to enter and exit, and the air cylinder works normally, so that the service life of the vacuum valve is prolonged, and the use effect of the vacuum valve is ensured; and the structure is simple, the cost is low, and the manufacture and the installation are convenient.

Drawings

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

Fig. 2 is a schematic diagram of the external structure of the present invention.

Fig. 3 is a cross-sectional view of fig. 2A-a.

The names of the parts indicated by the numerical references in the above figures are as follows: the electromagnetic valve comprises a valve body 1, a valve core 2, an electromagnetic valve 3, a working channel 11, a first connecting channel 12, a second connecting channel 13, a vent 21, a sealing plug 22, a sealing end cover 14, an air exhaust channel 141, an electromagnet 15, a guide sleeve 16 and a ventilation cavity 161.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A vacuum mechanical valve comprises a valve body 1 and a valve core 2 arranged in the valve body 1 in a sliding way, wherein a working channel 11 connected with a vacuum chamber and a first connecting channel 12 connected with a negative pressure source are arranged on the valve body 1, and the first connecting channel 12 is communicated with the working channel 11; the valve body 1 is provided with an electromagnetic valve 3, the valve body 1 is also provided with an air cylinder 15, the electromagnetic valve 3 is electrically connected with the air cylinder 15, and the air cylinder 15 is in transmission connection with the valve core 2; the valve body 1 is also provided with a second connecting channel 13, the valve core 2 is provided with a vent hole 21 matched with the valve body 1, and the second connecting channel 13 is communicated or separated with the working channel 11 through the vent hole 21.

The valve body 1 is detachably provided with a sealing end cover 14, the sealing end cover 14 is arranged at the end part of the valve body 1, and the side wall of the sealing end cover 14 is attached to the inner wall of the valve body 1 and is provided with an air exhaust channel 141 corresponding to the first connecting channel 12.

Both ends of the suction passage 141 are respectively communicated with the first connecting passage 12 and the working passage 11.

The end part of the valve core 2 is provided with a sealing plug 22, when the valve core 2 slides to the end surface of the inner side of the sealing end cover 14, the sealing plug 22 blocks the air exhaust passage 141, and the sealing plug 22 is used for blocking the first connecting passage 12 from being communicated with the working passage 11.

The valve body 1 further comprises a guide sleeve 16, the valve core 2 is installed in the guide sleeve 16 in a matching mode, a vent cavity 161 is formed between the valve core 2 and the guide sleeve 16, and the sealing plug 22 is tightly attached to the guide sleeve 16. The valve core 2 and the sealing plug 22 are integrated and move synchronously, when the sealing end cover is sealed and plugged by moving to the end of the sealing plug 22, the vent hole 21 at the tail part of the sealing plug is ensured to extend out of the guide sleeve, the effect of communicating the second connecting channel with the working channel is achieved, the tail part can not be completely separated from the guide sleeve at the moment, and the trouble caused by the follow-up positioning and maintenance when the tail part is separated from the guide sleeve is avoided.

The side wall of the sealing plug 22 slides against the guide sleeve 16.

The vent 21 is arranged on the side wall of the sealing plug 22 at one end of the vent cavity 161, and the valve core 2 slides until the vent 21 extends out of the guide sleeve 16, so that the second connecting channel 13 is communicated with the working channel 11. The number and size of the air vents 21 can be set according to specific conditions, and when the air vents 21 partially or completely leave the guide sleeves 16, the atmosphere enters the working chamber through the second connecting channel 13, the air venting cavity 161, the air vents 21 and the working channel 11; when the guide bush 16 covers the vent hole 21, the atmosphere is blocked in the vent chamber 161.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A vacuum mechanical valve comprises a valve body (1) and a valve core (2) arranged in the valve body (1) in a sliding manner, wherein a working channel (11) connected with a vacuum chamber and a first connecting channel (12) connected with a negative pressure source are arranged on the valve body (1), and the first connecting channel (12) is communicated with the working channel (11); be provided with solenoid valve (3) on valve body (1), its characterized in that: the valve body (1) is also provided with an air cylinder (15), the electromagnetic valve (3) is electrically connected with the air cylinder (15), and the air cylinder (15) is in transmission connection with the valve core (2); the valve body (1) is also provided with a second connecting channel (13), the valve core (2) is provided with a vent hole (21) matched with the valve body (1), and the second connecting channel (13) is communicated or separated with the working channel (11) through the vent hole (21).

2. A vacuum mechanical valve according to claim 1, wherein: the valve body (1) is detachably provided with a sealing end cover (14), the sealing end cover (14) is arranged at the end part of the valve body (1), and the side wall of the sealing end cover (14) is attached to the inner wall of the valve body (1) and is provided with an air exhaust channel (141) corresponding to the first connecting channel (12).

3. A vacuum mechanical valve according to claim 2, wherein: the air exhaust channel (141) is respectively communicated with the first connecting channel (12) and the working channel (11).

4. A vacuum mechanical valve according to claim 3, wherein: the end part of the valve core (2) is provided with a sealing plug (22), and when the valve core (2) slides to the end surface of the sealing plug (22) pressed on the inner side of the sealing end cover (14), the sealing plug (22) blocks the air exhaust channel (141).

5. A vacuum mechanical valve according to claim 4, characterized in that: the valve body (1) further comprises a guide sleeve (16), and the valve core (2) is installed in the guide sleeve (16) in a matched mode and forms a ventilation cavity (161) with the guide sleeve (16).

6. A vacuum mechanical valve according to claim 5, characterized in that: the side wall of the sealing plug (22) is jointed with the guide sleeve (16) to slide.

7. A vacuum mechanical valve according to claim 6, wherein: the vent hole (21) is arranged on the side wall of the sealing plug (22) at one end of the vent cavity (161), and the valve core (2) slides to the vent hole (21) and extends out of the guide sleeve (16) to enable the second connecting channel (13) to be communicated with the working channel (11).