CN213393675U

CN213393675U - Gas circuit switch valve

Info

Publication number: CN213393675U
Application number: CN202022015964.7U
Authority: CN
Inventors: 吴旭; 阎雪波; 汪琛玮; 陈贵海; 刘际; 李骜; 孙红娟
Original assignee: Hefei Lanzhou Intelligent Technology Co ltd
Current assignee: Hefei Lanzhou Intelligent Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-06-08
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a gas circuit switch valve, including the valve body, be provided with air inlet, a plurality of valve pocket and a plurality of gas outlet, the gas outlet with corresponding the valve pocket intercommunication, a plurality of case, with valve pocket sliding seal connects, and its afterbody is provided with the internal thread structure, and case push motor has the screw thread axle, the screw thread axle with the vice cooperation of internal thread structure spiral, the control panel, with case push motor signal connection, wherein, spacing trigger lever is installed to the afterbody of case, be equipped with two sets of limit switch on the control panel. The air path switch valve of the utility model realizes the back-and-forth movement of the valve core by arranging the valve core pushing motor with the screw rod, the stroke of the valve core is controllable, and the defects of the conventional pneumatic control unit in the aspects of large flow and low air pressure air path control are overcome; the start-stop position of the switch valve is accurately controlled by arranging the limit switch, so that air leakage caused by position inaccuracy of the valve core is prevented.

Description

Gas circuit switch valve

Technical Field

The utility model relates to a gas circuit control element field, concretely relates to gas circuit on-off valve.

Background

With the development of the tourism industry, the field drift is popular with a lot of people. The portable small-sized air bag ship is used as a drifting tool, the importance of the portable small-sized air bag ship is self-evident, in order to ensure the safety of the air bag ship, an explosion-proof air bag is required to be selected, and the air pressure of the air bag is required to be controlled within a reasonable range, so that an air path automatic control system, namely an air bag inflation valve, is required to be installed on the air bag ship.

The multi-path gas path automatic control system with the conventional design needs various gas path connecting pieces, pipelines, wiring, a pressure sensor, a transmitter, a signal processing unit, an actuator and other parts, has large volume, heavy weight and low integration level, and is generally suitable for field control or other conventional applications in the industrial field.

Most of the existing gas circuit control valves are used under the condition of high pressure, the diameter of a valve core hole is small, the influence is small under the high pressure, but the flow of a pipeline can be obviously influenced under the low pressure. The gas circuit control valve mainly comprises a direct-acting electromagnetic valve and a pilot-operated electromagnetic valve, and the direct-acting electromagnetic valve has short stroke and is usually used for a small-diameter pipeline and difficult to realize large flow; the pilot electromagnetic valve has relatively long structure stroke and large pipeline diameter, but cannot stably work due to insufficient pressure difference under low pressure, and is not suitable for portable small-sized air bag ships.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model aims to provide a gas circuit switch valve to adapt to low atmospheric pressure, large-traffic application scene.

Therefore, the utility model provides a gas circuit switch valve, including the valve body, be provided with air inlet, a plurality of valve pocket and a plurality of gas outlet, the gas outlet with corresponding the valve pocket intercommunication, a plurality of case, with valve pocket sliding seal connects, and its afterbody is provided with internal thread structure, and case push motor has the screw thread axle, the screw thread axle with the vice cooperation of internal thread structure spiral is used for the drive the case is in remove in the valve pocket, the control panel, with case push motor signal connection is used for control the case removes, realizes the switching of ooff valve.

The tail part of the valve core is provided with a limit trigger rod, the control panel is provided with two groups of limit switches, and the limit switches are matched with the limit trigger rod to limit the stroke range of the valve core.

Furthermore, a plurality of air pressure sensors are arranged on the bottom side of the control panel, a plurality of sensor mounting holes used for mounting the air pressure sensors are formed in the valve body, and the sensor mounting holes are communicated with the air outlet.

Furthermore, a countersunk hole is formed in the sensor mounting hole, and an air pressure sensor sealing ring for sealing the air pressure sensor is mounted in the countersunk hole.

Furthermore, a sealing ring pressing plate used for pressing the sealing ring pressing plate is arranged on the sealing ring of the air pressure sensor, and the counter sink can be filled with the sealing ring of the air pressure sensor after the sealing ring of the air pressure sensor is deformed by pressure, so that the sealing of the air pressure sensor is realized.

Furthermore, a guide groove is formed in the tail of the valve cavity, and the limiting trigger rod can slide back and forth in the guide groove.

Furthermore, the tail end of the valve core is also provided with a positioning ring, and the positioning ring is used for fixing the limiting trigger rod and the internal thread structure.

Furthermore, the number of the air outlets is three, and the three air outlets are respectively in sealing connection with the three connecting ports of the air pipe joint.

Furthermore, a motor fixing frame used for installing the valve core pushing motor is arranged on the valve body.

Furthermore, an avoiding groove is formed in the middle rear portion of the valve core, and the avoiding groove can avoid the threaded shaft.

Furthermore, a sealing cover in sealing connection with the valve body is arranged above the valve body.

Compared with the prior art, the beneficial effects of the utility model are that:

the gas path switch valve of the utility model adopts the motion principle of the thread pair to realize the back and forth motion of the valve core by arranging the valve core pushing motor with the screw rod, is different from the electromagnetic structure valve in the prior art, has controllable valve core stroke, overcomes the defects of the conventional pneumatic control unit in the aspects of large flow and low pressure gas path control, is suitable for the automatic control of low pressure and large flow, can be used in other occasions, and solves the switch problem of a large-diameter pipeline; the start-stop position of the switch valve is accurately controlled by arranging the limit switch, so that air leakage caused by position inaccuracy of the valve core is prevented.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an overall explosion schematic diagram of the gas path switch valve of the present invention;

fig. 2 is a schematic structural view of a valve core assembly in the gas circuit switch valve of the present invention;

fig. 3 is a sectional view of the valve core assembly in the air passage switch valve of the present invention;

fig. 4 is a schematic structural view of a valve body in the gas path switching valve of the present invention;

fig. 5 is a structural diagram of the combination of the air pressure sensor, the limit switch and the control panel in the air path switch valve of the present invention;

fig. 6 is a schematic structural view of the gas path switch valve of the present invention;

fig. 7 is a schematic view of the internal assembly of the gas path switching valve of the present invention;

fig. 8 is a schematic structural view of the gas path switch valve in the open state of the present invention;

fig. 9 is a schematic structural view of the gas path switch valve in an open circuit state according to the present invention; and

fig. 10 is a schematic structural view of the gas path switch valve of the present invention in a state of valve element motion.

Description of the reference numerals

1. A copper pillar; 2. a sealing ring of the air pressure sensor; 3. a seal ring pressing plate; 4. a sealing cover; 5. a control panel; 6. a valve core; 7. a limiting trigger rod; 8. the valve core pushes the electrical machinery; 9. a motor fixing frame; 10. a valve core sealing ring; 11. a valve body; 12. a gas pipe joint; 13. a nut; 14. a positioning ring; 15. an air pressure sensor; 16. a limit switch; 6.1, avoiding the groove; 11.1, a guide groove; 11.2, sensor mounting holes; 11.3, countersunk holes; 15.1, air pressure probe.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1-10 illustrate some embodiments according to the present invention.

As shown in fig. 1, an air passage switching valve comprises a valve body 11, a valve core 6, a valve core pushing motor 8 and a control panel 5, wherein the valve core 6 is installed in a valve cavity of the valve body 11, the valve core pushing motor 8 is connected with the valve core and used for pushing the valve core 6 to move, an air pressure sensor 15, a limit switch and a processing circuit are integrated on the control panel 5 and located on the upper side of the valve body 11 and used for controlling the valve core pushing motor 8 to work, and the valve core 6 is controlled to move by controlling the valve core pushing motor 8 to work, so that the on-off of the valve cavity in the switching valve is controlled, and the switching function is.

Specifically, the side surface of the valve body 11 is provided with an air inlet, three air outlets are arranged in front of the valve body 11, an air pipe connector 12 is arranged on the front side of each air outlet, the air pipe connectors 12 are in sealing connection through screws and sealing rings, three connectors of the air pipe connectors 12 are respectively connected with the three air outlets, three valve cavities are further arranged on the valve body 11, valve cores 6 are respectively installed in the three valve cavities, and the valve cores 6 are sleeved with valve core sealing rings 10 for sealing between the valve cores 6 and the valve cavities.

The rear side of the valve core 6 is provided with a valve core pushing motor 8, the valve core pushing motor 8 is fixed in a motor limiting clamping groove of the valve body 11 through a motor fixing frame 9, as shown in fig. 2 and 3, the tail part of the valve core 6 is provided with an internal thread structure, the internal thread structure is a nut 13, and a threaded shaft of the valve core pushing motor 8 can be screwed into the tail part of the valve core to be matched with the nut 13 so as to push the valve core 6 to move in the valve cavity. Wherein, the nut 13 adopts the high rigidity material to prolong the motion life of case 6 and improve the maintainability.

Specifically, the tail part of the valve core 6 is also provided with an annular groove, the annular groove is provided with a limit trigger rod 7, the tail end of the valve core 6 is also provided with a positioning ring 14, and a nut 13 and the limit trigger rod 7 can be fixedly locked on the valve core 6 through a screw and the positioning ring 14. Wherein, control panel 5 downside is equipped with two sets of limit switch 16, and limit switch 16 is located the front and back side of limit trigger lever 7 top, can control limit trigger lever 7 and case 6's removal stroke through limit switch 16, avoids case push motor 8 to rotate excessively, makes case 6 break away from or the case card dies in the valve from the valve pocket, causes the ooff valve to damage.

Specifically, as shown in fig. 4 and 5, the valve body 11 is provided with a sensor mounting hole 11.2 for mounting an air pressure sensor 15, the sensor mounting hole 11.2 is connected to the air outlet, meanwhile, three air pressure sensors 15 are mounted on the bottom side of the front portion of the control panel 5, an air pressure probe 15.1 is provided at the front end of the air pressure sensor 15, and the air pressure probe 15.1 can be inserted into the sensor mounting hole 11.2 for detecting the air pressure at the air outlet on the valve body 11.

As shown in fig. 4-6, in order to improve the sealing performance between the air pressure probe 15.1 and the sensor mounting hole 11.2, a counter bore 11.3 is formed in the sensor mounting hole 11.2, an air pressure sensor sealing ring 2 is mounted in the counter bore 11.3, a sealing ring pressing plate 3 is further arranged on the air pressure sensor sealing ring 2, the sealing ring pressing plate 3 can be locked and fixed on the valve body 11 through a screw fastener, and at the moment, the air pressure sensor sealing ring 2 is fully filled in the counter bore 11.3 after being deformed by pressure, so that the sealing of the air pressure probe 15.1 is realized.

Wherein, the both ends of sealing washer clamp plate 3 are equipped with a plurality of connecting holes, install copper post 1 on the connecting hole, and control panel 5 passes through the screw fixation on copper post 1 to realize the purpose that control panel 5 and valve body 11 are fixed.

Specifically, as shown in fig. 4 and 6, a sealing cover 4 is further arranged above the valve body 11, a sealing groove is formed in the position, matched with the sealing cover 4, of the valve body 11, a silica gel sealing ring is filled in the sealing groove, and then the sealing cover 4 and the valve body 11 are locked and fixed, so that IP 67-grade water resistance can be realized, and the reliability of the product in working in a wading environment is ensured.

In an embodiment, as shown in fig. 3, an avoiding groove 6.1 is designed at the middle rear part of the valve core 6, and the bottom surface of the avoiding groove 6.1 is lower than the bottom of the threaded hole of the nut 13, so that the screw of the valve core pushing motor 8 is not contacted with the avoiding groove 6.1, the length of the matching between the threaded shaft of the valve core pushing motor 8 and the nut 13 can be kept stable and unchanged, and the load of the motor can be stabilized.

In an embodiment, as shown in fig. 4 and 7, a guide groove 11.1 is formed at the upper end of the tail portion of the valve cavity of the valve body 11, the assembled valve core assembly is installed into the valve cavity of the valve body from the tail portion of the valve body 11, at this time, the limiting trigger rod 7 faces upward and can slide back and forth in the guide groove 11.1, and the guide groove 11.1 functions as: firstly, keep the stability of case 6 seesaw, secondly avoid case 6 to receive case pushing motor 8's torsion, take place rotatoryly in the valve pocket to influence the triggering of spacing trigger lever 7 to limit switch 16, this design simple structure, the reliability is high, and the precision meets the demands.

The switch valve is mainly used for inflating the air bag of the portable small-sized air bag ship, wherein the switch valve is arranged at an air inlet of the air bag, three air outlets are formed in the switch valve, an air pressure curve can be flexibly set, and the inflation sequence method is flexible and changeable; the switch valve is provided with the air pressure sensor 15, so that the air pressure of each sub-air bag can be acquired in real time, and the alarm or automatic inflation and deflation can be realized when the pressure is abnormal, so that the system safety of the portable small ship is greatly improved.

The utility model discloses an assembly process of gas circuit ooff valve as follows:

firstly, a valve core sealing ring piece 10 is sleeved in a valve core 6, the assembly is carried out by utilizing the elasticity of a sealing ring, then a limit trigger rod 7 is clamped in an annular groove at the tail part of the valve core, and then a nut 13 and a positioning ring 14 are sequentially placed and then are connected and fastened by a screw;

then, the assembled valve core assembly is installed into a valve cavity of the valve body 11 from the tail part of the valve body 11, the limiting trigger rod 7 is upward at the moment and can slide back and forth in a valve cavity guide groove 11.1, meanwhile, a threaded shaft of the valve core pushing motor 8 is screwed into the tail part of the valve core to be matched with a nut 13, so that the installation is convenient, and the valve core pushing motor 8 is fixed in a motor limiting clamping groove by a motor fixing frame 9;

then, the sealing ring 2 of the air pressure sensor is placed in a counter bore 11.3 of the valve body 11, and a sealing ring pressing plate 3 is covered and pre-tightened by screws; then locking the copper cylinder 1 into a corresponding hole on the sealing ring pressing plate 3; pushing an air pressure probe 15.1 on an air pressure sensor 15 on the control panel 5 into the sensor mounting hole 11.2, and fixing the control panel 5 on the copper column 1 by using screws;

finally, the air pipe joint 12 is locked and fixed at an air outlet of the valve body 11, a silica gel sealing ring is added in a sealing groove of the valve body, and the sealing cover 4 and the valve body 11 are locked and fixed, so that IP 67-grade water resistance can be realized, and the reliability of the product in working in a wading environment is ensured.

The utility model discloses a gas circuit switch valve's working process as follows:

the first state: the valve core pushing motor 8 drives the valve core 6 to move rightwards through the thread pair, when the position shown in the figure 8 is reached, the limit trigger rod 7 triggers the limit switch 16 at the right end of the control board 5, the valve core pushing motor 8 stops rotating, the valve core 6 also stops moving, and at the moment, the air inlet and the air outlet of the switch valve are completely communicated.

And a second state: the valve core pushing motor 8 drives the valve core 6 to move leftwards through the thread pair, when the valve core 6 reaches the position shown in fig. 9, the limit trigger rod 7 triggers the limit switch 16 at the left end of the control board 5, so that the valve core pushing motor 8 stops rotating, the valve core 6 also stops moving, and at the moment, the air inlet and the air outlet of the switch valve are completely disconnected.

And a third state: as shown in fig. 10, it is a schematic structural diagram of the valve core 6 driven by the valve core pushing motor 8, and at this time, the air inlet and the air outlet of the switch valve are in a semi-open state.

In addition to the above mentioned advantages, the switch valve of the present invention has the following advantages:

1. the gas path switch valve adopts a one-inlet and multi-outlet opening design, most gas path connecting pieces are eliminated, and no pipeline connection and wiring are realized; meanwhile, the multi-channel sensors and the control panel in the switch valve are highly integrated, and a complex control system is integrated into one part, so that the switch valve is small in size, light in weight and convenient to use, and IP 67-level water resistance is easily realized.

2. This gas circuit switch valve sets up pressure sensor through the gas outlet department at valve body 11, can detect the atmospheric pressure of ooff valve play mouth department, can report to the police or fill the gassing automatically when pressure is unusual, improves the security of the working part who is connected with the gas outlet greatly.

3. The gas circuit connection mode is designed according to the structural characteristics of the gas pressure sensor chip, the gas valve opening and closing mode is designed according to the application characteristics of the product, the complex system is highly integrated and is changed into a component, the weight and the volume are reduced, the waterproof design cost is reduced, and the production and maintenance cost is reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas circuit switch valve, comprising:

the valve body (11) is provided with an air inlet, a plurality of valve cavities and a plurality of air outlets, the air outlets are communicated with the corresponding valve cavities,

a plurality of valve cores (6) which are connected with the valve cavity in a sliding and sealing way, the tail parts of the valve cores are provided with internal thread structures,

a valve core pushing motor (8) is provided with a threaded shaft which is matched with the internal thread structure in a screw pair manner and is used for driving the valve core (6) to move in the valve cavity,

the control panel (5) is in signal connection with the valve core pushing motor (8) and is used for controlling the valve core (6) to move so as to realize the opening and closing of the switch valve;

the tail of the valve core (6) is provided with a limiting trigger rod (7), the control panel (5) is provided with two groups of limiting switches (16), and the limiting switches (16) are matched with the limiting trigger rod (7) to limit the stroke range of the valve core (6).

2. The air path switch valve as claimed in claim 1, wherein a plurality of air pressure sensors (15) are installed on the bottom side of the control plate (5), a plurality of sensor installation holes (11.2) for installing the air pressure sensors (15) are opened on the valve body (11), and the sensor installation holes (11.2) are communicated with the air outlet.

3. The gas path switch valve according to claim 2, characterized in that a counter bore (11.3) is provided in the sensor mounting hole (11.2), and a gas pressure sensor sealing ring (2) for sealing the gas pressure sensor (15) is installed in the counter bore (11.3).

4. The gas path switch valve according to claim 3, wherein the gas pressure sensor sealing ring (2) is provided with a sealing ring pressing plate (3) for pressing itself, and the gas pressure sensor sealing ring (2) can fill the counter bore (11.3) after being deformed by pressure, so as to seal the gas pressure sensor (15).

5. The gas circuit switch valve as claimed in claim 1, wherein a guide groove (11.1) is formed at the tail of the valve cavity, and the limit trigger rod (7) can slide back and forth in the guide groove (11.1).

6. The gas circuit switch valve according to claim 1, characterized in that the end of the valve core (6) is further provided with a positioning ring (14), and the positioning ring (14) is used for fixing the limit trigger rod (7) and the internal thread structure.

7. The gas path switch valve according to claim 1, wherein the number of the gas outlets is three, and the three gas outlets are respectively connected with three connecting ports of the gas pipe joint (12) in a sealing manner.

8. The gas path switch valve according to claim 1, wherein the valve body (11) is provided with a motor fixing frame (9) for mounting the valve core pushing motor (8).

9. The gas path switch valve according to claim 1, wherein an avoiding groove (6.1) is formed in the middle rear portion of the valve core (6), and the avoiding groove (6.1) can avoid the threaded shaft.

10. The gas circuit switch valve according to claim 1, characterized in that a sealing cover (4) is arranged above the valve body (11) and is connected with the valve body in a sealing way.