阅读说明：本技术 自破空真空发生器 (Self-breaking vacuum generator ) 是由 曾愉深 芦成 彭乾帅 于 2021-01-25 设计创作，主要内容包括：本发明属于空气压力技术领域,具体涉及一种真空发生器。自破空真空发生器,包括发生器主体,发生器主体包括阀体、阀芯、阀口,还包括喷嘴组件,喷嘴组件通过弹性件可拆卸的设置在阀芯内且在阀芯内水平移动或复位,喷嘴组件为内部中空的喷嘴组件,喷嘴组件的一侧设有喷嘴进气口,喷嘴组件的侧壁上设有喷嘴侧孔、阀口密封圈；喷嘴进气口通过气路联通真空接头,喷嘴侧孔通过另一气路联通抽吸接头,抽吸接头还通过另一气路经阀口联通破空接头。本发明正压流体通过喷嘴组件产生负压进行抽吸,复位弹簧进行阀口结构的复位,可实现自动正压破空作用。(The invention belongs to the technical field of air pressure, and particularly relates to a vacuum generator. The self-vacuum-breaking generator comprises a generator main body, a nozzle assembly and a valve core, wherein the generator main body comprises a valve body, a valve core and a valve port, the nozzle assembly is detachably arranged in the valve core through an elastic piece and moves or resets horizontally in the valve core, the nozzle assembly is a hollow nozzle assembly, a nozzle air inlet is formed in one side of the nozzle assembly, and a nozzle side hole and a valve port sealing ring are formed in the side wall of the nozzle assembly; the nozzle air inlet is communicated with the vacuum joint through an air path, the nozzle side hole is communicated with the suction joint through another air path, and the suction joint is also communicated with the vacuum joint through another air path through a valve port. The positive pressure fluid of the invention generates negative pressure through the nozzle assembly for suction, and the return spring resets the valve port structure, thereby realizing the automatic positive pressure blank breaking function.)

1. A self-vacuum-breaking generator comprises a generator main body, wherein the generator main body comprises a valve body, a valve core and a valve port positioned on the valve core, and is characterized by further comprising a nozzle assembly, the nozzle assembly is detachably arranged in the valve core through an elastic piece and horizontally moves or resets in the valve core, the nozzle assembly is a hollow nozzle assembly, a nozzle air inlet is arranged at one side of the nozzle assembly, and a nozzle side hole communicated with the interior of the nozzle assembly and a valve port sealing ring used for opening and closing the valve port are arranged on the side wall of the nozzle assembly;

the nozzle air inlet is communicated with the vacuum connector through an air path, the nozzle side hole is communicated with the suction connector through another air path, and the suction connector is also communicated with the vacuum connector through another air path through the valve port;

an external positive pressure air source is used for feeding air through the vacuum connector, negative pressure is generated around the nozzle side hole when the air flows through the nozzle assembly from the nozzle air inlet, and the negative pressure flows through the air suction connector for negative pressure suction; the positive pressure air inlet simultaneously pushes the nozzle assembly to move horizontally in the valve core, and the elastic piece is compressed, so that the valve port sealing ring blocks the valve port seal, and the air path between the suction joint and the emptying joint is isolated; and the other external positive pressure air source is used for feeding air through the vacuum breaking joint, when the elastic piece is reset, the valve port is opened, and the air passages between the suction joint and the vacuum breaking joint are communicated, so that the vacuum is broken.

2. The self-vacuum-breaking generator according to claim 1, wherein the nozzle assembly comprises a nozzle, a receiving tube communicated with the nozzle, noise reduction cotton and a plug in sequence from right to left, the nozzle is located at the right side of the receiving tube, the left side of the receiving tube extends out of the valve core, the elastic member is arranged between the receiving tube and the plug, a preset horizontal moving distance is formed between the left side of the receiving tube and the plug through the elastic member, the noise reduction cotton is arranged outside the left side of the receiving tube, the receiving tube and the plug are separated through the noise reduction cotton in a noise reduction mode, and a gas source flowing through the nozzle flows out through the receiving tube, the noise reduction cotton and the plug in sequence;

the right side of the nozzle is the nozzle air inlet, and the nozzle side hole is located on the side wall of the receiving pipe.

3. The self-breaking vacuum generator of claim 2, wherein the internal hollow structure of the receiving tube is a laval nozzle.

4. The self-vacuum-breaking generator according to claim 2, wherein the elastic member is a return spring, the right side wall of the plug is provided with a spring accommodating cavity, the outer diameter of the left outer wall of the receiving tube is smaller than that of the middle outer wall, so that the left outer wall of the receiving tube forms a spring groove, one end of the return spring extends into the spring accommodating cavity, and the other end of the return spring is sleeved on the left outer wall of the receiving tube.

5. The self-emptying vacuum generator according to any one of claims 1 to 4, further comprising a throttling valve, wherein the throttling valve is arranged on a gas path communicated with the emptying joint and the suction joint, and positive pressure gas flowing in from the emptying joint passes through the throttling valve and then reaches the suction joint through the valve port.

6. The self-vacuum-breaking vacuum generator according to claim 5, wherein a throttle chamber is arranged in the valve body, the throttle valve is arranged in the throttle chamber, the throttle valve comprises a vertically arranged throttle rod and a nut in threaded connection with the outer wall of the throttle rod, the nut is fixed with the inner wall of the throttle chamber in a sealing manner, the lower part of the throttle rod after passing through the nut is sealed with the inner wall of the throttle chamber, and the bottom of the throttle rod is positioned on a gas path communicated with the vacuum-breaking joint and the suction joint;

the top of the throttle rod penetrates through the throttle cavity and then is detachably connected with a rotary cap, the throttle rod is driven by the rotation of the rotary cap to rotate on the nut, the throttle rod moves up and down, and finally the opening degree of the air channel communicated with the air breaking joint and the suction joint is adjusted.

7. The self-vacuum-breaking generator according to claim 6, wherein the cavity wall at the top of the throttling cavity extends upwards to form a throttling joint, two rings of connecting clamping grooves are arranged on the outer wall of the throttling joint, the two rings of connecting clamping grooves are arranged up and down, and a toothed boss is arranged at the top of the throttling joint;

the rotary cap comprises a rotary cap body which is hollow inside and has an open structure at one end, a throttle rod mounting column is arranged in the middle of the interior of the rotary cap body, a throttle rod mounting hole site is arranged in the middle of the throttle rod mounting column, a circle of toothed bosses are arranged on the periphery of the throttle rod mounting column, and the toothed bosses in the rotary cap body can be meshed with the toothed bosses on the top of the throttle joint;

two buckles are arranged on the inner wall of the bottom surface of the side wall of the screw cap body, are symmetrically arranged, and are clamped with any one connecting clamping groove in the outer wall of the throttling joint;

the throttling joint is connected with the rotary cap in a clamping manner, when two buckles of the rotary cap are buckled with the connecting clamping grooves at the lower part, the toothed boss in the rotary cap body is meshed with the toothed boss at the top of the throttling joint, and the rotary cap cannot rotate at the moment; when the adjustment is needed, the screw cap is moved upwards, the two buckles on the screw cap are buckled with the connecting clamping grooves above the screw cap, the two toothed bosses are separated, and the throttling effect is realized by rotating the screw cap.

8. The self-breaking vacuum generator of claim 7, wherein two side walls of each said clip are provided with vertical voids.

9. The self-breaking vacuum generator of claim 7, wherein the throttle joint is a circular ring structure and is integrally formed with the valve body, and the spin cap body is a hollow cylindrical structure with one end open.

10. The self-vacuum-breaking generator according to claim 7, wherein the bottom of the throttle lever is of a cone structure, the outer wall of the throttle lever is provided with a circle of sealing groove, a sealing ring is arranged in the sealing groove, the throttle lever is sealed with the inner wall of the throttle chamber through the sealing ring, the top of the throttle lever is of a cuboid structure, the throttle lever mounting hole is a rectangular groove, and the top of the throttle lever is inserted into the throttle lever mounting hole.

Technical Field

The invention belongs to the technical field of air pressure, and particularly relates to a vacuum generator.

Background

The vacuum generator is a novel, efficient, clean, economical and small vacuum component which utilizes a positive pressure air source to generate negative pressure, so that the negative pressure can be easily and conveniently obtained in a place with compressed air or a place needing the positive negative pressure in a pneumatic system. Vacuum generators are widely used in industrial automation in the fields of machinery, electronics, packaging, printing, plastics, robots, and the like.

However, the existing vacuum generator has a complex structure when performing the air breaking, and the flow of the air breaking fluid can not be adjusted.

Disclosure of Invention

The invention aims to solve the technical problems that the existing vacuum generator is complex in structure during air breaking and cannot adjust the flow of an air breaking fluid, and provides a self-air-breaking vacuum generator.

The self-vacuum-breaking generator comprises a generator main body, wherein the generator main body comprises a valve body, a valve core, a valve port positioned on the valve core and a nozzle assembly, the nozzle assembly is detachably arranged in the valve core through an elastic piece and horizontally moves or resets in the valve core, the nozzle assembly is a hollow nozzle assembly, a nozzle air inlet is arranged at one side of the nozzle assembly, and a nozzle side hole communicated with the interior of the nozzle assembly and a valve port sealing ring used for opening and closing the valve port are arranged on the side wall of the nozzle assembly;

the nozzle air inlet is communicated with the vacuum connector through an air path, the nozzle side hole is communicated with the suction connector through another air path, and the suction connector is also communicated with the vacuum connector through another air path through the valve port;

an external positive pressure air source is used for feeding air through the vacuum connector, negative pressure is generated around the nozzle side hole when the air flows through the nozzle assembly from the nozzle air inlet, and the negative pressure flows through the air suction connector for negative pressure suction; the positive pressure air inlet simultaneously pushes the nozzle assembly to move horizontally in the valve core, and the elastic piece is compressed, so that the valve port sealing ring blocks the valve port seal, and the air path between the suction joint and the emptying joint is isolated; and the other external positive pressure air source is used for feeding air through the vacuum breaking joint, when the elastic piece is reset, the valve port is opened, and the air passages between the suction joint and the vacuum breaking joint are communicated, so that the vacuum is broken.

The nozzle assembly sequentially comprises a nozzle, a receiving pipe communicated with the nozzle, silencing cotton and a plug from right to left, the nozzle is positioned on the right side of the receiving pipe, the left side of the receiving pipe extends out of the valve core, the elastic part is arranged between the receiving pipe and the plug, a preset horizontal moving distance is reserved between the left side of the receiving pipe and the plug through the elastic part, the silencing cotton is arranged outside the left side of the receiving pipe, the receiving pipe and the plug are silenced and separated through the silencing cotton, and an air source flowing through the nozzle sequentially flows out through the receiving pipe, the silencing cotton and the plug;

the right side of the nozzle is the nozzle air inlet, and the nozzle side hole is located on the side wall of the receiving pipe.

The internal hollow structure of the receiving pipe is preferably a Laval nozzle.

The preferred reset spring that adopts of elastic component, the right side lateral wall of end cap is equipped with the spring and holds the chamber, the left side outer wall external diameter of receiver tube is less than middle part outer wall external diameter, causes the left side outer wall of receiver tube forms the spring groove, reset spring's one end stretch into in the spring holds the intracavity, reset spring's other pot head is established on the left side outer wall of receiver tube.

The air inlet pipe is characterized by also comprising a throttle valve, wherein the throttle valve is arranged on an air path communicated with the air breaking joint and the suction joint, and positive pressure air flowing in from the air breaking joint passes through the throttle valve and then reaches the suction joint through the valve port from the air path.

A throttling cavity is arranged in the valve body, the throttling valve is arranged in the throttling cavity, the throttling valve comprises a vertically arranged throttling rod and a nut in threaded connection with the outer wall of the throttling rod, the nut is fixed with the inner wall of the throttling cavity in a sealing manner, the lower part of the throttling rod penetrates through the nut and is sealed with the inner wall of the throttling cavity, and the bottom of the throttling rod is positioned on an air path communicated with the vacuum breaking joint and the suction joint;

the top of the throttle rod penetrates through the throttle cavity and then is detachably connected with a rotary cap, the throttle rod is driven by the rotation of the rotary cap to rotate on the nut, the throttle rod moves up and down, and finally the opening degree of the air channel communicated with the air breaking joint and the suction joint is adjusted.

The cavity wall at the top of the throttling cavity extends upwards to form a throttling joint, two circles of connecting clamping grooves are arranged on the outer wall of the throttling joint and are vertically arranged, and a toothed boss is arranged at the top of the throttling joint;

the rotary cap comprises a rotary cap body which is hollow inside and has an open structure at one end, a throttle rod mounting column is arranged in the middle of the interior of the rotary cap body, a throttle rod mounting hole site is arranged in the middle of the throttle rod mounting column, a circle of toothed bosses are arranged on the periphery of the throttle rod mounting column, and the toothed bosses in the rotary cap body can be meshed with the toothed bosses on the top of the throttle joint;

two buckles are arranged on the inner wall of the bottom surface of the side wall of the screw cap body, are symmetrically arranged, and are clamped with any one connecting clamping groove in the outer wall of the throttling joint;

the throttling joint is connected with the rotary cap in a clamping manner, when two buckles of the rotary cap are buckled with the connecting clamping grooves at the lower part, the toothed boss in the rotary cap body is meshed with the toothed boss at the top of the throttling joint, and the rotary cap cannot rotate at the moment; when the adjustment is needed, the screw cap is moved upwards, the two buckles on the screw cap are buckled with the connecting clamping grooves above the screw cap, the two toothed bosses are separated, and the throttling effect is realized by rotating the screw cap.

And vertical gaps are formed in the side walls of the two sides of each buckle. Leave four spaces on the lateral wall of cap body soon for it changes outward expansion to revolve the cap, and two buckles of being convenient for remove to another connecting slot from a connecting slot.

The throttling joint is of a circular structure and is integrally manufactured with the valve body, and the screw cap body is of a hollow cylindrical structure with one open end.

The bottom of throttle lever is the cone structure, the outer wall of throttle lever is equipped with the sealed recess of round, be equipped with the sealing washer in the sealed recess, the throttle lever pass through the sealing washer with the throttle intracavity wall is sealed, the top of throttle lever is the cuboid structure, throttle lever mounting hole site is the rectangular channel, the throttle lever top inserts in the throttle lever mounting hole site.

The positive progress effects of the invention are as follows: the invention adopts the self-vacuum-breaking vacuum generator, and has the following advantages:

1. the positive pressure fluid generates negative pressure through the nozzle assembly for suction, and the overall volume is reduced to a certain extent through the Laval nozzle structure under the condition of ensuring the characteristics of vacuum degree, flow and the like;

2. the reset spring resets the valve port structure, and the automatic positive pressure blank breaking effect can be realized;

3. the throttle valve regulates the flow of the air breaking fluid;

4. the throttle valve rod is adjusted by the aid of the screw cap structure, and the throttle valve rod is simple in structure and convenient to adjust.

Drawings

FIG. 1 is a schematic view of an overall structure of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a cross-sectional view of the valve port of the present invention closed;

FIG. 4 is a cross-sectional view of the valve port of the present invention open;

FIG. 5 is a schematic view of a portion of the present invention;

FIG. 6 is a schematic view of a screw cap according to the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific drawings.

Referring to fig. 1 to 6, from breaking empty vacuum generator, including the generator main part, the generator main part includes valve body 1, case 11, is located the valve port on case 11, is equipped with the throttle chamber in the valve body 1, and the chamber wall at throttle chamber top upwards extends and forms the throttle and connects, is equipped with two rings of connecting slot on the outer wall of throttle and connects, and two rings of connecting slot arrange from top to bottom, are connecting slot 12 and connecting slot 13 respectively, and the top that the throttle connects is equipped with dentate boss 14.

Still include nozzle assembly 2, nozzle assembly 2 passes through elastic component detachable setting in case 11 and in case 11 horizontal migration or reset, nozzle assembly 2 is inside hollow nozzle assembly 2, and one side of nozzle assembly 2 is equipped with the nozzle air inlet, is equipped with the nozzle side opening with the inside UNICOM of nozzle assembly 2, is used for opening and close valve port sealing washer 21 of valve port on nozzle assembly 2's the lateral wall. The nozzle air inlet is communicated with the vacuum connector 3 through an air path, the nozzle side hole is communicated with the suction connector 4 through another air path, and the suction connector 4 is also communicated with the vacuum connector 5 through another air path through a valve port. Preferably, the suction connector 4 is arranged on the left side of the valve body 1, and the vacuum connector 3 and the vacuum breaking connector 5 are arranged on the right side of the valve body 1 and are respectively arranged up and down. The vacuum joint 3, the suction joint 4 and the vacuum breaking joint 5 are respectively connected with the valve body 1 in a sealing way through sealing rings.

The nozzle assembly 2 sequentially comprises a nozzle 22, a receiving pipe 23 communicated with the nozzle 22, silencing cotton 24 and a plug 25 from right to left, the nozzle 22 is located on the right side of the receiving pipe 23, the left side of the receiving pipe 23 extends out of the valve core 11, an elastic piece is arranged between the receiving pipe 23 and the plug 25, a preset horizontal moving distance is reserved between the left side of the receiving pipe 23 and the plug 25 through the elastic piece, the silencing cotton 24 is arranged on the outer portion of the left side of the receiving pipe 23, the receiving pipe 23 and the plug 25 are silenced and separated through the silencing cotton 24, and a gas source flowing through the nozzle 22 sequentially flows out through the receiving pipe 23, the silencing cotton 24 and the plug 25. The right side of the nozzle 22 is the nozzle 22 inlet, and the nozzle side holes are located on the side wall of the receiver tube 23.

The internal hollow structure of the receiving pipe 23 is preferably a laval nozzle. The elastic component preferably adopts reset spring 26, and the right side lateral wall of end cap 25 is equipped with the spring and holds the chamber, and the left side outer wall external diameter of receiving tube 23 is less than middle part outer wall external diameter, causes the left side outer wall of receiving tube 23 to form the spring groove, and reset spring 26's one end stretches into and holds the intracavity in the spring, and reset spring 26's the other end cover is established on the left side outer wall of receiving tube 23. Case 11 sets up in valve body 1, and 2 parts of nozzle assembly set up in case 11, and the part stretches out to set up behind case 11 inside 1 of valve body, and the cotton 24 of amortization can paste and establish on the inner wall of valve body 1, has the space between cotton 24 of amortization and elastic component, the admission pipe 23, and the cotton 24 sides of amortization have with the bar groove of outside UNICOM, give vent to anger through the cotton 24 back bar grooves that can follow both sides of amortization and give vent to anger.

The air-conditioning system also comprises a throttle valve, the throttle valve is arranged on an air path communicated with the air breaking joint 5 and the suction joint 4, and positive pressure air flowing in from the air breaking joint 5 is throttled by the throttle valve and then reaches the suction joint 4 through the air path and the valve port. The throttle valve is arranged in the throttle cavity and comprises a vertically arranged throttle rod 61 and a nut 62 in threaded connection with the outer wall of the throttle rod 61, the nut 62 is fixed with the inner wall of the throttle cavity in a sealing manner, the lower part of the throttle rod 61 penetrates through the nut 62 to be sealed with the inner wall of the throttle cavity, and the bottom of the throttle rod is positioned on an air path communicated with the air breaking joint 5 and the suction joint 4; the top of the throttle rod 61 passes through the throttle cavity and then is detachably connected with the screw cap 7, the rotation of the screw cap 7 drives the throttle rod 61 to rotate on the nut 62, the up-and-down movement of the throttle rod 61 is realized, and finally, the opening degree of the air channel communicated with the air breaking joint 5 and the suction joint 4 is adjusted.

The screw cap 7 comprises a screw cap body 71 with an open structure at one hollow end, a throttle rod mounting column is arranged in the middle of the interior of the screw cap body 71, a throttle rod mounting hole 72 is arranged in the middle of the throttle rod mounting column, a circle of toothed bosses 73 are arranged on the periphery of the throttle rod mounting column, and the toothed bosses 73 in the screw cap body 71 can be meshed with the toothed bosses 14 at the top of the throttle joint. Be equipped with two buckles 74 on the lateral wall bottom surface inner wall of spiral cap body 71, two buckles 74 symmetry sets up, and two buckles 74 and arbitrary connecting groove joint on the outer wall of throttle joint. The side walls of each clip 74 are provided with vertical gaps. Four gaps are reserved on the side wall of the screw cap body 71, so that the screw cap 7 is easier to expand outwards, and two buckles 74 can move from one connecting clamping groove to the other connecting clamping groove conveniently.

The throttling joint is connected with the screw cap 7 in a clamping manner, when two buckles 74 of the screw cap 7 are buckled with the connecting clamping grooves 12 below, the toothed bosses 73 in the screw cap body 71 are just matched with the toothed bosses 14 at the top of the throttling joint one by one to realize meshing connection, and at the moment, the screw cap 7 cannot rotate; when the adjustment is needed, the screw cap 7 is moved upwards, the two buckles 74 on the screw cap 7 are buckled with the connecting clamping groove 13 above the screw cap, the two toothed bosses are separated, and the throttling effect is realized by rotating the screw cap 7.

The throttle joint is of a circular structure and is integrally manufactured with the valve body 1, and the turncap body 71 is of a hollow cylindrical structure with one open end. The bottom of the throttle rod 61 is of a cone structure, the outer wall of the throttle rod 61 is provided with a circle of sealing grooves, sealing rings are arranged in the sealing grooves, the throttle rod 61 is sealed with the inner wall of a throttle cavity through the sealing rings, the top of the throttle rod 61 is of a cuboid structure, the throttle rod mounting hole sites 72 are rectangular grooves, and the top of the throttle rod 61 is inserted into the throttle rod mounting hole sites 72.

When the vacuum suction nozzle works, an external positive pressure air source enters air through the vacuum connector 3, negative pressure is generated around the side hole of the nozzle when the air flows through the nozzle 22 assembly 2 from the air inlet of the nozzle, and the negative pressure flows through the air suction connector to carry out negative pressure suction; the positive pressure air inlet simultaneously pushes the nozzle assembly 2 to move horizontally in the valve core 11, the elastic element is compressed, as shown in fig. 3, so that the valve port sealing ring 21 blocks the valve port in a sealing manner, and the air path between the suction joint 4 and the vacuum breaking joint 5 is isolated; another external positive pressure air source is supplied through the vacuum breaking joint 5, and after the elastic member is reset, as shown in fig. 4, the valve port is opened by the valve port sealing ring 21, and the air passages between the suction joint 4 and the vacuum breaking joint 5 are communicated, so that vacuum is broken. In addition, the throttle valve plays the effect of adjusting the broken empty flow, moves up two buckles 74 of the turncap 7 during use and is buckled with the connecting clamping groove 13, and the adjustment is carried out by rotating the turncap 7. The rotation direction of the turncap 7 determines the rotation direction of the throttle lever 61 and the nut 62, and determines the moving direction of the throttle lever 61, thereby performing a throttling function.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.