CN217207795U

CN217207795U - Channel on-off valve

Info

Publication number: CN217207795U
Application number: CN202220078341.0U
Authority: CN
Inventors: 杨建伟; 林展
Original assignee: Dongguan Qibrothers Spraying Equipment Technology Co ltd
Current assignee: Dongguan Qibrothers Spraying Equipment Technology Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-08-16
Anticipated expiration: 2032-01-12

Abstract

The utility model belongs to the technical field of the valve technique and specifically relates to indicate a passageway on-off valve, including valve body and on-off controller, the valve body is equipped with the embedding chamber, center channel and first passageway, the valve body is equipped with the second passageway with center channel intercommunication, center channel inlays with the intersection of first passageway and is equipped with the liquid outlet nozzle, on-off controller includes the shell, the cavity, the lid, a piston, the via hole, the connecting rod, the shutoff head, the guide arm, guide hole and elastic component, guide arm and guide hole sliding connection, via hole and cavity intercommunication, the piston separates into air cavity and flexible chamber with the cavity, the shell be equipped with the business turn over air flue of air cavity intercommunication and with the exhaust passage of via hole intercommunication, the valve body be equipped with the exhaust hole of exhaust passage intercommunication and respectively with the inlet port and the venthole of business turn over air flue intercommunication, the shutoff head is opened or the shutoff liquid outlet nozzle. The utility model discloses effectively and control the break-make of passageway steadily, operating personnel can clearly and definitely know the operating condition that this passageway break-make valve located, reduce the risk of maloperation.

Description

Channel on-off valve

Technical Field

The utility model belongs to the technical field of the valve technique and specifically relates to indicate a passageway on-off valve.

Background

In spraying equipment, on-off valves are needed to control on-off or on-off of the on-off valves so as to realize oil path control of liquid. Although the on-off valve in the prior art can control an oil way, an operator cannot clearly know the current state of the on-off valve, and misoperation is easy to occur to cause loss or even potential safety hazards. Therefore, the drawbacks are obvious, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a passageway on-off valve.

In order to realize the purpose, the utility model adopts the following technical scheme:

a channel on-off valve comprises a valve body and an on-off controller, wherein an embedded cavity, a central channel and a first channel are sequentially and axially communicated with the valve body, a second channel communicated with the central channel is radially arranged on the valve body, a liquid outlet nozzle is embedded at the intersection of the central channel and the first channel, the on-off controller comprises a shell embedded in the embedded cavity, a cavity arranged in the shell, a cover body covering the opening of the cavity, a piston hermetically and slidably connected to the cavity, a through hole formed by recessing the bottom wall of the cavity, a connecting rod connected to one side of the piston and penetrating through the hole, a blocking head connected to one end of the connecting rod far away from the piston, a guide rod connected to the other side of the piston, a guide hole arranged in the cover body and an elastic piece arranged between the other side of the piston and the cover body, the guide rod is slidably connected with the guide hole, and the through hole is communicated with the cavity, the piston divides the cavity into an air cavity and a telescopic cavity, the shell is provided with an air inlet and outlet passage communicated with the air cavity and an air outlet passage communicated with the via hole, the valve body is provided with an exhaust hole communicated with the air outlet passage and an air inlet and an air outlet respectively communicated with the air inlet and outlet passage, the outer wall of the connecting rod is in sliding connection with the inner wall of the via hole in a sealing manner, and the plugging head is positioned in the central passage and is used for opening or plugging the liquid outlet nozzle.

Further, a plurality of sealing rings are embedded in the via hole and used for sealing a gap between the inner wall of the via hole and the outer wall of the connecting rod, and one end, close to the via hole, of the exhaust passage is located between the two adjacent sealing rings.

Further, a third channel is arranged in the radial direction of the valve body and communicated with the second channel through the central channel.

Further, the outer side wall of the piston is sleeved with a first sealing ring, and the piston is in sliding connection with the inner wall of the cavity in a sealing mode through the first sealing ring.

Further, the terminal surface of shell is through second sealing washer and the diapire sealing connection of embedding chamber.

Furthermore, the outer side wall of the shell is provided with a third sealing ring and a fourth sealing ring, and the third sealing ring and the fourth sealing ring are respectively positioned on two sides of the air inlet and outlet passage.

Further, the exhaust passage is arranged obliquely downwards.

Further, the elastic part is a spring, two ends of the spring are respectively abutted against the cover body and the piston, and the spring is sleeved outside the guide rod.

Furthermore, a limiting step is arranged at the intersection of the central channel and the first channel, and the liquid outlet nozzle is embedded in the limiting step.

Furthermore, the air inlet hole and the air outlet hole are communicated with a control switch.

The utility model has the advantages that: in practical application, at the beginning, under the action of the elastic force of the elastic part, the piston is at the lowest position of the cavity, the connecting rod is in an extending state, the sealing head seals the liquid outlet nozzle, so that the central channel is not communicated with the first channel, and the second channel cannot supply liquid to the first channel through the central channel. When the liquid outlet nozzle needs to be opened, the gas supply system supplies gas into the gas inlet and outlet channels, the gas enters the gas cavity through the gas inlet and outlet channels and the gas inlet, along with the gradual increase of the gas in the gas cavity, the gas can gradually push the piston to move towards the direction close to the cover body and compress the elastic part, so that the elastic part stores elastic potential energy, the moving piston drives the connecting rod and the blocking head to move, so that the blocking head opens the liquid outlet nozzle, the second channel is communicated with the first channel through the central channel, and the liquid supply device supplies liquid to the first channel through the second channel, the central channel and the liquid outlet nozzle; through the volume of control supply gas in to the air cavity, can control the shutoff head and open the size of liquid outlet nozzle to the control is to the flow size of first passageway supply liquid, can reach the effect of control flow. When the liquid outlet nozzle needs to be plugged again, gas is stopped to be supplied into the gas cavity, the gas outlet is opened, the piston is driven to be reset and move together with the connecting rod and the plugging head under the action of the resilience force of the elastic piece, and the gas in the gas cavity is discharged through the gas inlet and outlet channel and the gas outlet until the plugging head plugs the liquid outlet nozzle. In the reciprocating movement process of the piston, the guide rod is in sliding fit with the via hole, so that the guide function is achieved, the movement stability of the piston is improved, and the marking function is achieved; when the guide rod is positioned in the through hole, an operator can know that the connecting rod is in an extending state at the moment, and the channel on-off valve is in a closed (blocking/breaking) state. At the in-process of installation piston and connecting rod, the exhaust hole can be with the gaseous discharge in the via hole, avoids the state of producing the negative pressure in the via hole, and when the exhaust downthehole exhaust liquid, proves the phenomenon that the weeping appears between connecting rod and the via hole, reminds operating personnel to maintain. The outer wall of the connecting rod is connected with the inner wall of the through hole in a sliding mode in a sealing mode, so that on one hand, the moving stability of the connecting rod is improved, and on the other hand, the air tightness between the connecting rod and the through hole is guaranteed. The utility model has the advantages of compact structure and reasonable design, effectively and control the break-make of passageway steadily, operating personnel can clearly and definitely know the operating condition that this passageway break-make valve located, reduces the risk of maloperation.

Drawings

Fig. 1 is a sectional view of the present invention.

Description of reference numerals:

1. a valve body; 2. embedding a cavity; 3. a central channel; 4. a first channel; 5. a second channel; 6. a liquid outlet nozzle; 7. a housing; 8. a cavity; 9. a cover body; 10. a piston; 11. a via hole; 12. a connecting rod; 13. plugging a plug; 14. a guide bar; 15. a guide hole; 16. an elastic member; 17. an air cavity; 18. a telescopic cavity; 19. an air inlet and outlet passage; 20. an exhaust passage; 21. an exhaust hole; 22. an air intake; 23. an air outlet; 24. a seal ring; 25. a third channel; 26. a first seal ring; 27. a second seal ring; 28. a third seal ring; 29. a fourth seal ring; 30. a limiting step; 31. and controlling the switch.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in figure 1, the utility model provides a pair of passageway on-off valve, it includes valve body 1 and on-off controller, the axial of valve body 1 communicates in proper order and is provided with and inlays dress chamber 2, central channel 3 and first passageway 4, the radial second passageway 5 that is provided with and communicates with central channel 3 of valve body 1, the liquid outlet 6 is inlayed in the intersection of central channel 3 and first passageway 4, on-off controller is including inlaying shell 7 of inlaying in dress chamber 2, setting up in the cavity 8 of shell 7, covering and locating shell 7 and hiding the open-ended lid 9 of cavity 8, sliding connection in sealed ground in the piston 10 of cavity 8, the via hole 11 that forms of recessing from the diapire of cavity 8, connect in one side of piston 10 and pass through the connecting rod 12 of hole 11, connect in the end of connecting rod 12 keep away from piston 10 the shutoff head 13, connect in the guide arm 14 of the opposite side of piston 10, The valve body 1 is provided with an exhaust hole 21 communicated with the exhaust channel 20, an air inlet 22 and an air outlet 23 respectively communicated with the air inlet and outlet 19, the outer wall of the connecting rod 12 is in sliding connection with the inner wall of the through hole 11 in a sealing manner, and the sealing head 13 is positioned in the central channel 3 and used for opening or sealing the liquid outlet nozzle 6.

In practical application, initially, under the elastic force of the elastic member 16, the piston 10 is at the lowest position of the cavity 8, the connecting rod 12 is in the extended state, and the blocking head 13 blocks the liquid outlet nozzle 6, so that the central channel 3 is not communicated with the first channel 4, and the second channel 5 cannot be supplied to the first channel 4 through the central channel 3. When the liquid outlet nozzle 6 needs to be opened, the gas supply system supplies gas into the gas inlet and outlet passage 19, the gas enters the gas cavity 17 through the gas inlet and outlet passage 19 and the gas inlet hole 22, the gas gradually pushes the piston 10 to move towards the direction close to the cover body 9 and compress the elastic part 16 along with the gradual increase of the gas in the gas cavity 17, so that the elastic part 16 stores elastic potential energy, the moving piston 10 drives the connecting rod 12 and the blocking head 13 to move, the blocking head 13 opens the liquid outlet nozzle 6, the second channel 5 is communicated with the first channel 4 through the central channel 3, and the liquid supply device supplies liquid to the first channel 4 through the second channel 5, the central channel 3 and the liquid outlet nozzle 6; by controlling the amount of gas supplied into the gas cavity 17, the size of the liquid outlet nozzle 6 opened by the blocking head 13 can be controlled, so that the flow rate of the liquid supplied to the first channel 4 can be controlled, and the effect of controlling the flow rate can be achieved. When the liquid outlet nozzle 6 needs to be plugged again, the gas supply into the gas cavity 17 is stopped, the gas outlet 23 is opened, the piston 10 with the connecting rod 12 and the plugging head 13 are driven to reset and move under the action of the resilience force of the elastic part 16, and the gas in the gas cavity 17 is discharged through the gas inlet and outlet channel 19 and the gas outlet 23 until the plugging head 13 plugs the liquid outlet nozzle 6. In the reciprocating movement process of the piston 10, the guide rod 14 is in sliding fit with the through hole 11, so that the guide function is achieved, the movement stability of the piston 10 is improved, and the marking function is achieved; when the guide rod 14 is located in the through hole 11, the operator can know that the connecting rod 12 is in the extended state at this time, and the channel on-off valve is in the closed (blocking/opening) state. In the process of installing the piston 10 and the connecting rod 12, the exhaust hole 21 can exhaust gas in the through hole 11, the state of negative pressure generated in the through hole 11 is avoided, and when liquid is exhausted from the exhaust hole 21, the phenomenon of liquid leakage between the connecting rod 12 and the through hole 11 is proved, and an operator is reminded of maintaining. The outer wall of the connecting rod 12 is hermetically and slidably connected with the inner wall of the through hole 11, so that the moving stability of the connecting rod 12 is improved on one hand, and the air tightness between the connecting rod 12 and the through hole 11 is ensured on the other hand. The utility model has the advantages of compact structure and reasonable design, effectively and control the break-make of passageway steadily, operating personnel can clearly and definitely know the operating condition that this passageway break-make valve located, reduces the risk of maloperation.

In this embodiment, a plurality of sealing rings 24 are embedded in the via hole 11, the sealing rings 24 are used for sealing a gap between an inner wall of the via hole 11 and an outer wall of the connecting rod 12, and one end of the exhaust passage 20 close to the via hole 11 is located between two adjacent sealing rings 24. This structural design, the gas tightness is good, avoids the liquid in the central channel 3 to flow in the via hole 11.

In this embodiment, a third channel 25 is radially disposed on the valve body 1, the third channel 25 is communicated with the second channel 5 via the central channel 3, and the third channel 25 and the second channel 5 are in a normal open state. The use cases are as follows: in a first and normal state, the second channel 5 supplies liquid to the third channel 25 through the central channel 3, and when the liquid outlet nozzle 6 is opened by the blocking head 13, the second channel 5 can respectively supply liquid to the third channel 25 and the first channel 4; secondly, when the plugging head 13 opens the liquid outlet nozzle 6, the second channel 5 and the third channel 25 can simultaneously supply liquid to the first channel 4. Of course, the third channel 25 and the second channel 5 may be selectively sealed by sealing heads. This structural design, the user state is diversified, and the commonality is good, and the practicality is strong, and application range is wide.

In this embodiment, the outer side wall of the piston 10 is sleeved with a first sealing ring 26, and the piston 10 is slidably connected with the inner wall of the cavity 8 in a sealing manner through the first sealing ring 26. The first sealing ring 26 is used for sealing a gap between the outer wall of the piston 10 and the inner wall of the cavity 8, has good air tightness, and avoids the phenomenon of air leakage from influencing the normal work of the piston 10.

In this embodiment, the end surface of the housing 7 is connected to the bottom wall of the embedding cavity 2 via a second seal ring 27 in a sealing manner; the second sealing ring 27 is used for a gap between the shell 7 and the embedded cavity 2, has good air tightness and prevents liquid from flowing into the embedded cavity 2.

In this embodiment, the outer side wall of the housing 7 is provided with a third sealing ring 28 and a fourth sealing ring 29, and the third sealing ring 28 and the fourth sealing ring 29 are respectively located at two sides of the air inlet/outlet duct 19. The third sealing ring 28 and the fourth sealing ring 29 are used for sealing the gap between the shell 7 and the embedding cavity 2, so that the air tightness is good, and the phenomenon of air leakage is avoided.

In this embodiment, the exhaust passage 20 is disposed obliquely downward to facilitate exhaust or drainage.

In this embodiment, the elastic member 16 is a spring, two ends of the spring respectively abut against the cover 9 and the piston 10, and the spring is sleeved outside the guide rod 14. The spring has the advantages of simple structure, convenient material taking, low cost, good elasticity and long service life.

In this embodiment, a limiting step 30 is disposed at an intersection of the central channel 3 and the first channel 4, and the liquid outlet nozzle 6 is embedded in the limiting step 30. This structural design not only is convenient for the installation of drain nozzle 6, has still improved the position accuracy and the stability of drain nozzle 6.

In this embodiment, the air inlet hole 22 and the air outlet hole 23 are both communicated with a control switch 31; specifically, the control switch 31 is a solenoid valve. The opening and closing of the air inlet hole 22 or the air outlet hole 23 are controlled through the electromagnetic valve, the control precision is high, the stability is good, and the response is sensitive.

All technical features in the embodiment can be freely combined according to actual needs.

The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

Claims

1. A passage on-off valve characterized by: the valve comprises a valve body and an on-off controller, wherein an embedded cavity, a central channel and a first channel are sequentially communicated and arranged in the axial direction of the valve body, a second channel communicated with the central channel is radially arranged on the valve body, a liquid outlet nozzle is embedded at the intersection of the central channel and the first channel, the on-off controller comprises a shell embedded in the embedded cavity, a cover body arranged in the cavity of the shell, a through hole formed by concavely arranging the bottom wall of the cavity, a connecting rod connected to one side of the piston and penetrating through the hole, a plugging head connected to one end of the connecting rod far away from the piston, a guide rod connected to the other side of the piston, a guide hole arranged in the cover body and an elastic part arranged between the other side of the piston and the cover body, the guide rod is in sliding connection with the guide hole, the through hole is communicated with the cavity, the piston separates the cavity into an air cavity and a telescopic cavity, the shell is provided with an air inlet and outlet channel communicated with the air cavity and an air exhaust channel communicated with the via hole, the valve body is provided with an exhaust hole communicated with the air exhaust channel, an air inlet hole and an air outlet hole respectively communicated with the air inlet and outlet channel, the outer wall of the connecting rod is in sliding connection with the inner wall of the via hole in a sealing mode, and the plugging head is located in the central channel and used for opening or plugging the liquid outlet nozzle.

2. A passage shut-off valve as defined in claim 1, wherein: a plurality of sealing rings are embedded in the via hole and used for sealing a gap between the inner wall of the via hole and the outer wall of the connecting rod, and one end, close to the via hole, of the exhaust passage is located between the two adjacent sealing rings.

3. A passage shut-off valve as defined in claim 1, wherein: and a third channel is arranged in the radial direction of the valve body and is communicated with the second channel through a central channel.

4. A passage shut-off valve as defined in claim 1, wherein: the outer side wall of the piston is sleeved with a first sealing ring, and the piston is connected with the inner wall of the cavity in a sliding mode in a sealing mode through the first sealing ring.

5. A channel break-off valve as defined in claim 1, wherein: the terminal surface of shell is connected with the diapire sealing connection of embedding chamber through the second sealing washer.

6. A passage shut-off valve as defined in claim 1, wherein: the lateral wall of shell is provided with third sealing washer and fourth sealing washer, third sealing washer and fourth sealing washer are located the both sides of business turn over air flue respectively.

7. A passage shut-off valve as defined in claim 1, wherein: the exhaust passage is arranged obliquely downwards.

8. A passage shut-off valve as defined in claim 1, wherein: the elastic piece is a spring, two ends of the spring are respectively abutted against the cover body and the piston, and the spring is sleeved outside the guide rod.

9. A passage shut-off valve as defined in claim 1, wherein: the intersection of the central channel and the first channel is provided with a limiting step, and the liquid outlet nozzle is embedded in the limiting step.

10. A passage shut-off valve as defined in claim 1, wherein: the air inlet hole and the air outlet hole are communicated with a control switch.