CN218031568U - Change-over valve and conveying equipment - Google Patents

Abstract

The application provides a conversion valve, wherein a conversion cavity, a first connector, a second connector and a third connector are formed in a valve body, the conversion cavity is formed in the valve body along a first direction, and the first connector, the second connector and the third connector are all communicated with the conversion cavity; the valve core is movably arranged in the conversion cavity along a first direction and can be switched between a first position and a second position; the valve core enables the first port to be communicated with the third port through the conversion cavity and blocks the second port and the third port at the first position, and enables the second port to be communicated with the third port through the conversion cavity and blocks the first port and the third port at the second position; the driving assembly comprises a driving piece and a resetting piece; the driving piece is arranged at one end of the valve body, which is provided with the conversion cavity, and is configured to be electrically connected with an external control system. The application also provides a delivery apparatus, including change-over valve and terminal output device, the change-over valve is located terminal output device, and terminal output device can export first liquid or second liquid through the change-over valve.

Description

Change-over valve and conveying equipment

Technical Field

The application belongs to the technical field of valves, and more specifically relates to a change-over valve and conveying equipment.

Background

When using the dental chair, need use different types of water sources, dental chair water source change-over valve is manual change-over valve, stirs the manual driving lever on the manual change-over valve and realizes the water source conversion, and the user passes through manual change-over valve and converts different types of water sources, and degree of automation is low, has reduced the convenience of using.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a change-over valve and conveying equipment to solve the technical problem that manual change-over valve that exists among the prior art is relatively poor in use convenience.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a changeover valve comprising:

the valve body is provided with a conversion cavity, a first interface, a second interface and a third interface, the conversion cavity is arranged in the valve body along a first direction, and the first interface, the second interface and the third interface are all communicated with the conversion cavity;

the valve core is movably arranged in the conversion cavity along the first direction and can be switched between a first position and a second position; the valve core enables the first port to be communicated with the third port through the conversion cavity and blocks the second port and the third port in the first position, and enables the second port to be communicated with the third port through the conversion cavity and blocks the first port and the third port in the second position;

the driving assembly comprises a driving piece and a resetting piece; the driving piece is arranged at one end, provided with the conversion cavity, of the valve body, is electrically connected with an external control system and is configured to drive the valve core to move to the first position; the reset piece is abutted against the valve core and is configured to drive the valve core to reset to the second position.

Optionally, the driving element includes a first fixing seat and a switch valve, the first fixing seat is disposed at one end of the valve body, where the conversion cavity is formed, the first fixing seat is formed with a first gas transmission channel and a second gas transmission channel that are disposed at an interval, the switch valve is disposed between the first gas transmission channel and the second gas transmission channel and electrically connected to an external control system, and an air outlet end of the first gas transmission channel faces the valve element along the first direction and is configured to drive the valve element by external compressed gas.

Optionally, a transition groove is formed in one end, facing the valve core, of the first fixing seat along the first direction, and the transition groove is communicated with the first gas transmission channel;

at least part of the valve core is arranged in the transition groove, or the valve core faces the transition groove along the first direction, or the driving piece further comprises a pushing block movably arranged in the transition groove, and the pushing block is configured to drive the valve core along the first direction under the driving of compressed gas.

Optionally, the first fixing seat is provided with a first pressure relief hole communicated with the transition groove; or, a second pressure relief hole communicated with the conversion cavity is formed in the valve body, and a detachable cover body is arranged in the second pressure relief hole.

Optionally, the valve core includes a first core, a second core and a third core, the first core and the second core are respectively disposed at two ends of the third core, the shift cavity includes a first cavity, a second cavity and a third cavity, the first cavity and the second cavity are respectively disposed at two ends of the third cavity, a gap exists between the third core and the third cavity, a length of the valve core in the first direction is greater than a length of the shift cavity in the first direction, and the third cavity has a first opening and a second opening along the first direction; the first chamber and the third chamber communicate when the valve spool is in the first position, and the second core blocks the second opening, the second chamber and the third chamber communicate when the valve spool is in the second position, and the first core blocks the first opening.

Optionally, a first convex portion is arranged on the outer periphery of the first core, a second convex portion is arranged on the outer periphery of the second core, a first step portion and a second step portion are arranged on the inner periphery of the third chamber, the second convex portion abuts against the second step portion when the valve core is in the first position, and the first convex portion abuts against the first step portion when the valve core is in the second position; the third core body is provided with a first groove and a second groove which are arranged at intervals, the first groove and the second groove are respectively arranged at two ends of the second core body, a first sealing piece is arranged in the first groove, a second sealing piece is arranged in the second groove, when the valve core is at a first position, the second sealing piece is sealed between the second convex part and the second step part, and when the valve core is at a second position, the first sealing piece is sealed between the first convex part and the first step part.

Optionally, the valve body is provided in plurality.

Optionally, the valve bodies are connected in sequence along the first direction, and the switching chambers are communicated in sequence along the first direction.

Optionally, a plurality of the valve bodies are distributed along the second direction, and the plurality of the valve bodies are all connected to the driving member in a sealing manner.

The present application further provides a delivery apparatus including the switch valve and a final output device, the switch valve being provided to the final output device, the final output device being capable of outputting the first liquid or the second liquid through the switch valve.

The application provides a beneficial effect of change-over valve lies in:

according to the conversion valve provided by the application, the driving piece can drive the valve core to move in the conversion cavity under the control of the external control system, and when the valve core is at the first position, the first port can be communicated with the third port; when the valve core is at the second position, the second port can be communicated with the third port; like this, can form two different transfer passage to carry different liquid, the driving piece can be connected with external control system electricity, can insert external control system with change-over valve, has improved the degree of automation of change-over valve, has improved the convenience of using.

The application provides a conveying equipment's beneficial effect lies in:

the application provides a conveying equipment, terminal output device can export different kinds of materials through the change-over valve to can insert external control system, degree of automation is high, helps improving the convenience of using.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective view of a switching valve provided in an embodiment of the present application;

fig. 2 is a cross-sectional view of a switching valve provided in an embodiment of the present application (with a spool in a first position);

FIG. 3 is a cross-sectional view of a shift valve provided in an embodiment of the present application (with the spool in a second position);

fig. 4 is a partially enlarged view of a portion a in fig. 3.

Wherein, in the figures, the respective reference numerals:

1. a valve body; 11. a conversion chamber; 111. a first chamber; 112. a second chamber; 113. a third chamber; 1131. a first opening; 1132. a second opening; 1133. a first step portion; 1134. a second step portion; 12. a first interface; 13. a second interface; 14. a third interface;

2. a valve core; 21. a first core; 22. a second core; 23. a third core; 231. a first groove; 232. a second groove; 233. a first seal member; 234. a second seal member; 24. a first convex portion; 25. a second convex portion; 3. a drive assembly; 31. a drive member; 311. a first fixed seat; 312. an on-off valve; 313. a first gas transmission channel; 314. a second gas transmission channel; 315. a transition groove; 316. a pushing block; 317. a first pressure relief vent; 32. a reset member;

4. a liquid storage tank;

5. a connecting nozzle;

6. a second fixed seat.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Based on this, the embodiment of the present invention provides a change-over valve and a conveying apparatus, which can be accessed to a control system of a terminal output device, and which can contribute to improvement of convenience in use.

Example one

As shown in fig. 1 to 2, an embodiment of the present application provides a switching valve, which includes a valve body 1, a valve core 2, and a driving assembly 3, where the valve body 1 is provided with a switching cavity 11, a first port 12, a second port 13, and a third port 14, the switching cavity 11 is provided in the valve body 1 along a first direction, and the first port 12, the second port 13, and the third port 14 are all communicated with the switching cavity 11; the valve core 2 is movably arranged in the conversion cavity 11 along a first direction and can be switched between a first position and a second position; the valve core 2 enables the first port 12 to be communicated with the third port 14 through the conversion cavity 11 and blocks the second port 13 and the third port 14 at the first position, and the valve core 2 enables the second port 13 to be communicated with the third port 14 through the conversion cavity 11 and blocks the first port 12 and the third port 14 at the second position; the driving assembly 3 comprises a driving member 31 and a resetting member 32; the driving member 31 is disposed at one end of the valve body 1, which is opened with the conversion cavity 11, and is configured to be electrically connected to an external control system, and configured to drive the valve plug 2 to move to a first position; the reset piece 32 abuts against the valve core 2, and the reset piece 32 is configured to drive the valve core 2 to reset to the second position.

It should be noted that the first direction described above and below refers to a bidirectional direction in which the first direction is located.

In this embodiment, the reset piece 32 is provided at one end of the valve element 2 away from the driver 31; of course, in other embodiments, the reset element 32 may also be disposed between the valve core 2 and the driver 31.

When the switching valve is used, the switching cavity 11, the first connector 12, the second connector 13 and the third connector 14 are mainly used for conveying liquid; of course, the conversion chamber 11, the first port 12, the second port 13 and the third port 14 can be used for conveying other forms of materials, such as gas, according to the actual application requirements.

Specifically, in the present embodiment, the first port 12 is communicated with an external purified water source, the second port 13 is communicated with an external tap water source, and the third port 14 is communicated with the terminal output device; when the terminal output device needs to use a purified water source, the driving part 31 is controlled by the external control system, the driving part 31 drives the valve core 2 to move towards the direction of the reset part 32 until the valve core 2 moves to the first position, at the moment, the first interface 12 is communicated with the third interface 14 through the conversion cavity 11, the second interface 13 and the third interface 14 are blocked by the valve core 2, the first interface 12 is communicated with the external purified water source, and the external purified water source is conveyed to the terminal output device through the first interface 12, the conversion cavity 11 and the third interface 14 in sequence; when the terminal output device needs to use the tap water source, the reset element 32 drives the valve core 2 to move towards the direction of the driving element 31 until the valve core 2 moves to the second position, at this time, the second port 13 is communicated with the third port 14 through the conversion cavity 11, the first port 12 and the third port 14 are blocked by the valve core 2, the second port 13 is communicated with the external tap water source, and the external tap water source is sequentially conveyed to the terminal output device through the second port 13, the conversion cavity 11 and the third port 14.

Compared with the prior art, the switching valve provided by the embodiment of the application has the advantages that the driving member 31 can drive the valve core 2 to move in the switching cavity 11 under the control of an external control system, and when the valve core 2 is at the first position, the first port 12 can be communicated with the third port 14; when the valve core 2 is at the second position, the second port 13 can be communicated with the third port 14; like this, can form two different transfer passage to carry different liquid, driving piece 31 can be connected with external control system electricity, can insert external control system with change-over valve, has improved the degree of automation of change-over valve, has improved the convenience of using.

In another embodiment of the present application, referring to fig. 1, the driving member 31 includes a first fixing seat 311 and a switch valve 312, the first fixing seat 311 is disposed at one end of the valve body 1, where the conversion cavity 11 is formed, the first fixing seat 311 is formed with a first gas transmission channel 313 and a second gas transmission channel 314, the switch valve 312 is disposed at one end of the first gas transmission channel 313 and the second gas transmission channel 314, and is used for electrically connecting with an external control system, and an air outlet end of the first gas transmission channel 313 is aligned to the valve core 2 along a first direction and is configured to drive the valve core 2 by external compressed gas.

Specifically, the switch valve 312 is electrically connected to an external control system, the second gas transmission channel 314 is communicated with an external compressed gas device, the switch valve 312 can communicate the first gas transmission channel 313 and the second gas transmission channel 314 in a power-on state, otherwise, the switch valve 312 can block the first gas transmission channel 313 and the second gas transmission channel 314 in a power-off state and can communicate the first gas transmission channel 313 with external air, in this embodiment, the first interface 12 is communicated with an external pure water source, the second interface 13 is communicated with an external tap water source, and the third interface 14 is communicated with a terminal output device; when the terminal output device needs to use a purified water source, the external control system energizes the switch valve 312 to enable the first gas transmission channel 313 and the second gas transmission channel 314 to be communicated, compressed gas sequentially passes through the second gas transmission channel 314, the switch valve 312 and the first gas transmission channel 313 and is output from the gas outlet end of the first gas transmission channel 313, at the moment, the gas pressure in the first fixing seat 311 is greater than the external atmospheric pressure, the compressed gas acts on the valve core 2 to drive the valve core 2 to move towards the reset part 32 until the valve core 2 moves to the first position; when the terminal output device needs to use a tap water source, the external control system controls the switch valve 312 to be powered off, the first air transmission channel 313 is communicated with external air, compressed air in the first fixing seat 311 is exhausted through the first air transmission channel 313, so that the atmospheric pressure in the first fixing seat 311 is kept consistent with the atmospheric pressure of the external air, and the reset part 32 can drive the valve core 2 to move towards the driving part 31 until the valve core 2 moves to the second position. In another embodiment, the switch valve 312 has a discharge passage itself, and when the first air delivery passage 313 and the second air delivery passage 314 are communicated, the discharge passage of the switch valve 312 is closed; when the first air delivery passage 313 and the second air delivery passage 314 are disconnected, the air release passage of the switching valve 312 is opened.

So set up, switch valve 312 switches between the on-state and outage state through external control system control, like this, can control case 2 and switch between primary importance and second place to reach the purpose of carrying different liquid, switch valve 312 can insert external control system, helps improving degree of automation, improves the convenience of using.

In another embodiment of the present application, please refer to fig. 1 to fig. 2, a transition groove 315 is formed at one end of the first fixing seat 311 facing the valve element 2 along the first direction, and the transition groove 315 is communicated with the first gas transmission channel 313; the driving member 31 further comprises a pushing block 316 movably disposed in the transition groove 315, the pushing block 316 being configured to drive the valve plug 2 in the first direction under the driving of the compressed gas.

Specifically, the switch valve 312 is electrically connected to an external control system, when the valve element 2 needs to be driven to move to the first position, the external control system energizes the switch valve 312, the compressed gas sequentially passes through the second gas transmission channel 314, the switch valve 312 and the first gas transmission channel 313 to reach the transition groove 315, the compressed gas enters the transition groove 315, so that the gas pressure in the transition groove 315 is greater than the external atmospheric pressure, the push block 316 can be driven to move towards the reset piece 32, and the push block 316 drives the valve element 2 to move towards the reset piece 32 until the valve element 2 moves to the first position; when the valve core 2 needs to be driven to move to the second position, the external control system disconnects electricity to the switch valve 312, the reset piece 32 drives the valve core 2 to move towards the driving piece 31, and the valve core 2 drives the pushing block 316 to move towards the driving piece 31 until the valve core 2 moves to the second position.

So set up, cross the aqueduct 315 and can store compressed gas, and promote piece 316 and locate in the aqueduct 315, compare with the motion that compressed gas directly drives valve element 2 through first gas transmission channel 313, cross aqueduct 315 and compressed gas's area of contact and be greater than valve element 2 and compressed gas's area of contact, be convenient for promote valve element 2.

Alternatively, the switching valve 312 may be provided as a solenoid valve, a direction change valve, or the like.

In another embodiment of the present application, referring to fig. 2, the first fixing seat 311 is opened with a first pressure relief hole 317 communicated with the transition groove 315.

Specifically, when the valve element 2 needs to be driven to move to the first position, the external control system energizes the switch valve 312, the compressed gas enters the transition groove 315 through the second gas transmission channel 314, the switch valve 312 and the first gas transmission channel 313 in sequence to drive the pushing block 316 to move towards the reset piece 32, during the process that the pushing block 316 moves towards the reset piece 32, the communicated volume between the transition groove 315 and the conversion cavity 11 is reduced, the air in the transition groove 315 and the conversion cavity 11 is compressed, and the air in the transition groove 315 and the conversion cavity 11 can be discharged through the first pressure relief hole 317.

With such an arrangement, when the valve plug 2 is driven to move to the first position, the air in the transition groove 315 and the switching chamber 11 can be prevented from being compressed, which results in an increase in air pressure in the transition groove 315 and the switching chamber 11, so that the pushing block 316 cannot move towards the reset piece 32, and the valve plug 2 cannot move to the first position.

In another embodiment of the present application, referring to fig. 1 to 4, the valve spool 2 includes a first core 21, a second core 22, and a third core 23, the first core 21 and the second core 22 are respectively disposed at two ends of the third core 23, the shift cavity 11 includes a first chamber 111, a second chamber 112, and a third chamber 113, the first chamber 111 and the second chamber 112 are respectively disposed at two ends of the third chamber 113, a gap exists between the third core 23 and the third chamber 113, a length of the valve spool 2 in the first direction is greater than a length of the shift cavity 11 in the first direction, and the third chamber 113 has a first opening 1131 and a second opening 1132 in the first direction; the first chamber 111 and the third chamber 113 communicate with each other and the second opening 1132 is blocked by the second core 22 when the spool 2 is in the first position, the second chamber 112 and the third chamber 113 communicate with each other and the first opening 1131 is blocked by the first core 21 when the spool 2 is in the second position.

Specifically, the spool 2 includes a first core 21, a second core 22, and a third core 23, and the shift chamber 11 includes a first chamber 111, a second chamber 112, and a third chamber 113, where the first core 21 is disposed in the first chamber 111, the second core 22 is disposed in the second chamber 112, the third core 23 is disposed in the third chamber 113, the first port 12 is communicated with the first chamber 111, the second port 13 is communicated with the second chamber 112, and the third port 14 is communicated with the third chamber 113; when the valve core 2 moves to the first position, the pushing block 316 drives the valve core 2 to move towards the reset element 32, at this time, the first core 21, the second core 22 and the third core 23 all move towards the reset element 32 until the valve core 2 moves to the first position, at this time, the second core 22 abuts against the second opening 1132, the first core 21 and the first opening 1131 are arranged at intervals, the second chamber 112 and the third chamber 113 are blocked by the second core 22, so that the first chamber 111 and the third chamber 113 are communicated, and the liquid input by the first port 12 flows to the third port 14 through the first chamber 111 and the third chamber 113; when the valve core 2 moves to the second position, the reset member 32 drives the valve core 2 to move toward the driving member 31, and at this time, the first core 21, the second core 22, and the third core 23 all move toward the driving member 31 until the valve core 2 moves to the second position, at this time, the first core 21 abuts against the first opening 1131, the second core 22 and the second opening 1132 are arranged at intervals, the first cavity 111 and the third cavity 113 are blocked by the first core 21, so that the second cavity 112 and the third cavity 113 are communicated, and the liquid input by the second port 13 flows to the third port 14 through the second cavity 112 and the third cavity 113.

So configured, when the valve spool 2 is in the first position, the second core 22 abuts against the second opening 1132, the second chamber 112 and the third chamber 113 are blocked, so that the first chamber 111 and the third chamber 113 communicate with each other, and when the valve spool 2 is in the second position, the first core 21 abuts against the first opening 1131, and the first chamber 111 and the third chamber 113 are blocked, so that the second chamber 112 and the third chamber 113 communicate with each other; when the spool 2 is switched between the first position and the second position, the third chamber 113 can communicate with different chambers, so that different delivery channels can be formed; a gap is formed between the third core 23 and the third chamber 113, so that the third core 23 can be prevented from directly contacting with the inner peripheral side of the third chamber 113, and the liquid can not flow to the third port 14 through the third chamber 113; besides, the length of the valve core 2 in the first direction is greater than that of the conversion cavity 11 in the first direction, so that the end of the valve core 2 can be in contact with the pushing block 316, and the pushing block 316 can drive the valve core 2 to move in the conversion cavity 11.

In another embodiment of the present application, please refer to fig. 1 to 4, a first convex portion 24 is disposed on an outer peripheral side of the first core 21, a second convex portion 25 is disposed on an outer peripheral side of the second core 22, a first step portion 1133 and a second step portion 1134 are disposed on an inner peripheral side of the third chamber 113, the second convex portion 25 abuts against the second step portion 1134 when the valve element 2 is in the first position, and the first convex portion 24 abuts against the first step portion 1133 when the valve element 2 is in the second position.

Specifically, when the valve spool 2 moves toward the first position, the valve spool 2 moves toward the reset member 32, and the second protrusion 25 moves toward the second step 1134 until the second protrusion 25 abuts against the second step 1134, which can block the second chamber 112 from the third chamber 113; when the spool 2 moves toward the second position, the spool 2 moves toward the driver 31, and the first protrusion 24 moves toward the first step 1133 until the first protrusion 24 abuts against the first step 1133, which can block the first chamber 111 from the third chamber 113.

So arranged, the second convex portion 25 abuts against the second step portion 1134, and can block the second chamber 112 and the third chamber 113, so as to enable the first chamber 111 and the third chamber 113 to communicate; the first convex portion 24 abuts against the first step portion 1133, and can block the first chamber 111 and the third chamber 113, so that the second chamber 112 and the third chamber 113 are communicated.

In another embodiment of the present application, referring to fig. 1 to 4, the second core 22 has a first groove 231 and a second groove 232 arranged at intervals, the first groove 231 and the second groove 232 are respectively arranged at two ends of the second core 22, a first sealing member 233 is arranged in the first groove 231, a second sealing member 234 is arranged in the second groove 232, when the valve element 2 is at the first position, the second sealing member 234 is sealed between the second protrusion 25 and the second step 1134, and when the valve element 2 is at the second position, the first sealing member 233 is sealed between the first protrusion 24 and the first step 1133.

With this arrangement, when the valve element 2 is in the first position, the second seal 234 seals between the second protrusion 25 and the second step 1134 to prevent the liquid from flowing into the third chamber 113 from the gap between the second protrusion 25 and the second step 1134, and when the valve element 2 is in the second position, the first seal 233 seals between the first protrusion 24 and the first step 1133 to prevent the liquid from flowing into the third chamber 113 from the gap between the first protrusion 24 and the first step 1133; in addition, the first groove 231 can position the first seal 233, and therefore the first seal 233 is prevented from moving relative to the third core 23, and the first seal 233 is prevented from coming into contact with the first convex portion 24 and the first stepped portion 1133, and the second groove 232 can position the second seal 234, and the second seal 234 is prevented from moving relative to the third core 23, and the second seal 234 is also prevented from coming into contact with the first convex portion 24 and the first stepped portion 1133.

In another embodiment of the present application, referring to fig. 1, the valve body 1 is provided in plurality.

Alternatively, the valve body 1 may be provided as one.

Optionally, the first port 12, the second port 13 and the third port 14 are each provided with a connection mouth 5.

By the arrangement, the first connector 12, the second connector 13 and the third connector 14 can be communicated with external equipment through the connecting nozzle 5, so that the sealing performance among the first connector 12, the second connector 13 and the third connector 14 can be improved, the valve body 1 can be prevented from being damaged due to the direct contact of the first connector 12, the second connector 13 and the third connector 14, and the service life of the switching valve can be prolonged.

In another embodiment of the present application, referring to fig. 1, a plurality of valve bodies 1 are connected in sequence along a first direction, and a plurality of conversion chambers 11 are communicated in sequence along the first direction. It should be noted that, in the present embodiment, the number of the valve bodies 1 is set to two as an example for explanation; of course, in other embodiments, the valve body 1 may be provided in other numbers according to actual use requirements, and the number is not limited herein.

Specifically, in the present embodiment, the switching chamber 11 of the valve body 1 close to the driving member 31 is disposed through in the first direction and is communicated with the switching chamber 11 of another valve body 1, the third port 14 of one valve body 1 can be communicated with the external reservoir 4, the first port 12 is communicated with the external compressed gas device, the third port 14 of another valve body 1 is communicated with the terminal output device, and the second port 13 is communicated with another reservoir device; when the terminal output device needs to use the liquid in the liquid storage tank 4, the external control system energizes the switch valve 312 to drive the valve core 2 to move to the first position, at this time, the first interfaces 12 on the two valve bodies 1 are communicated with the third interface 14 through the conversion cavity 11, the valve body 1 of which the third interface 14 is communicated with the external liquid storage tank 4 enables the external liquid storage tank 4 to be communicated with compressed gas through the first interface 12 and the third interface 14, the liquid in the external liquid storage tank 4 can be conveyed to the first interface 12 of the other valve body 1 through the compressed gas, the valve body 1 of which the other third interface 14 is communicated with the terminal output device can convey the liquid in the external liquid storage tank 4 to the terminal output device through the first interface 12 and the third interface 14; when the terminal output device needs to use other liquids, the external control system cuts off the power of the switch valve 312, the valve core 2 moves to the second position, at the moment, the second ports 13 on the two valve bodies 1 are communicated with the third ports 14 through the conversion cavity 11, the valve bodies 1 of which the third ports 14 are communicated with the external liquid storage tank 4 enable the external liquid storage tank 4 to be communicated with external air through the second ports 13 and the third ports 14 so as to release compressed gas in the external liquid storage tank 4, and the other valve bodies 1 of which the third ports 14 are communicated with the terminal output device transmit other liquids to the terminal output device through the second ports 13 and the third ports 14.

So set up, change-over valve is through the simultaneous working of a plurality of valve bodies 1, and a plurality of valve bodies 1 connect gradually along the first direction, through removing case 2, can promote one of them case 2 and remove to drive another case 2 and remove simultaneously, and then can obtain many transfer passage simultaneously, help improving the application scope of change-over valve, further improved the convenience of using, and degree of automation is high.

Optionally, the switching chambers 11 of the plurality of valve bodies 1 penetrate through the valve bodies 1 along the first direction, and the switching valve further includes a second fixing seat 6, where the second fixing seat 6 is disposed at an end of the valve body 1 far away from the driving member 31 along the first direction.

Specifically, in this embodiment, the valve bodies 1 are provided in two, the switching cavities 11 of the two valve bodies 1 penetrate through the valve bodies 1 along the first direction, and the end of the valve body 1 away from the first fixing seat 311, which faces away from the other valve body 1, is provided with the second fixing seat 6.

With this arrangement, the switching chambers 11 of the plurality of valve bodies 1 can be sealed by the second fixing seat 6 and the first fixing seat 311.

Connector nozzle 5 in another embodiment of the present application, please also refer to fig. 4, the reset element 32 is configured as a spring or a leaf spring.

Specifically, when the driving member 31 drives the valve element 2 to move toward the restoring member 32, the restoring member 32 is compressed, whereas when the switching valve 312 is closed, the restoring member 32 is extended, thereby driving the valve element 2 to move toward the driving member 31.

With the arrangement, after the driving element 31 drives the valve core 2 to move towards the reset element 32, the switch valve 312 is closed, and the valve core 2 can be automatically reset through the reset element 32, so that the use convenience is further improved.

The application also provides a delivery apparatus, including change-over valve and terminal output device, the change-over valve is located terminal output device, and terminal output device can export first liquid or second liquid through the change-over valve.

It should be noted that the terminal output device includes a dental chair, a filling machine, and the like.

In the present embodiment, the description is given by taking an example in which the terminal output device is provided as a dental chair; of course, in other embodiments, the terminal output device may also be configured as other devices according to actual use situations, and is not limited herein.

Specifically, in this embodiment, the terminal output device is configured as a dental chair, the first liquid may be configured as tap water, the second liquid may be configured as purified water, and the dental chair may be capable of switching between using tap water or purified water by means of a switching valve.

Compared with the prior art, the conveying equipment provided by the embodiment of the application has the advantages that the terminal output device can output the first liquid or the second liquid through the conversion valve, so that the terminal output device can be switched between the first liquid or the second liquid, an external control system can be accessed, the automation degree is high, and the convenience in use is improved.

Example two

This embodiment is substantially the same as the first embodiment, and the differences are only: as shown in fig. 2, at least a portion of the spool 2 is disposed within the transition groove 315.

So set up, when needing to drive valve core 2 and move to the first position, external control system is to switch valve 312 circular telegram, and switch valve 312 is to pouring into compressed gas in transition groove 315, and compressed gas can directly drive valve core 2 and remove towards reset piece 32 to make valve core 2 move to the first position.

EXAMPLE III

This embodiment is substantially the same as the first embodiment, and the differences are only: as shown in fig. 2, the spool 2 is aligned with the transition groove 315 in the first direction.

So set up, when needing to drive valve core 2 and move to the first position, external control system circular telegram to ooff valve 312, ooff valve 312 is to crossing the interior compressed gas that injects of aqueduct 315 and conversion chamber 11, and the gas that can directly drive valve core 2 and move towards piece 32 that resets to make valve core 2 move to the first position.

Example four

This embodiment is substantially the same as the first embodiment, and the differences are only: as shown in fig. 1 and 2, the valve body 1 is provided with a second pressure relief hole (not shown in the figure) communicated with the conversion cavity 11, and the second pressure relief hole is provided with a detachable cover body (not shown in the figure).

So set up, when needs use the change-over valve, with lid and second relief hole separation, when case 2 moved towards the first position, the air in transition groove 315 and the switching chamber 11 was discharged through the second relief hole, prevented that case appearance that case 2 appears unable movement to the first position.

EXAMPLE five

This embodiment is substantially the same as the first embodiment, and the differences are only: as shown in fig. 1 and fig. 2, the plurality of valve bodies 1 are distributed along the second direction, and the plurality of valve bodies 1 are all connected to the driving member 31 in a sealing manner.

It should be noted that the second direction mentioned above and below refers to a bidirectional direction of the axial direction, and the second direction is perpendicular to the first direction.

In the present embodiment, the description is given by taking an example in which the number of the valve bodies 1 is two; of course, in other embodiments, the valve body 1 may be provided in other numbers according to actual use conditions, and is not limited herein.

Specifically, in the present embodiment, the number of the valve bodies 1 is two, each of the shift chambers 11 is communicated with the transition groove 315 of the driving member 31, the pushing block 316 abuts against the two valve spools 2 at the same time, and when the valve spools 2 need to be switched between the first position and the second position, the two valve spools 2 can be driven to move at the same time through the driving member 31 and the reset member 32.

So set up, change-over valve is through a plurality of valve body 1 simultaneous workings, and a plurality of valve body 1 are arranged along the second direction, can drive two case 2 and remove simultaneously through driving piece 31 and piece 32 that resets, and then can obtain many transfer passage simultaneously, help improving the application scope of change-over valve, have further improved the convenience of using, and degree of automation is high.

EXAMPLE six

This embodiment is substantially the same as the first embodiment, and the differences are only: as shown in fig. 1 and 2, the switching chambers 11 of the plurality of valve bodies 1 between the valve body 1 remote from the driver 31 and the first fixing seat 311 penetrate the valve body 1 in the first direction.

With this arrangement, the switching chambers 11 of the valve bodies 1 can be sealed by the valve body 1 remote from the drive element 31 and the first fixing seat 311.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A diverter valve, comprising:

the valve body is provided with a conversion cavity, a first interface, a second interface and a third interface, the conversion cavity is arranged on the valve body along a first direction, and the first interface, the second interface and the third interface are all communicated with the conversion cavity;

the valve core is movably arranged in the conversion cavity along the first direction and can be switched between a first position and a second position; the valve core enables the first port to be communicated with the third port through the conversion cavity and blocks the second port and the third port in the first position, and enables the second port to be communicated with the third port through the conversion cavity and blocks the first port and the third port in the second position;

the driving assembly comprises a driving piece and a resetting piece; the driving piece is arranged at one end of the valve body, provided with the conversion cavity, is electrically connected with an external control system and is configured to drive the valve core to move to the first position; the reset piece is abutted against the valve core and is configured to drive the valve core to reset to the second position.

2. The changeover valve according to claim 1, wherein the driving member includes a first fixed seat and a switching valve, the first fixed seat is disposed at an end of the valve body where the changeover chamber is opened, the first fixed seat is formed with a first gas transmission channel and a second gas transmission channel which are arranged at an interval, the switching valve is disposed between the first gas transmission channel and the second gas transmission channel and is electrically connected to an external control system, and a gas outlet end of the first gas transmission channel faces the valve core in the first direction and is configured to drive the valve core by external compressed gas.

3. The changeover valve as claimed in claim 2, wherein one end of said first fixed seat facing said valve core in said first direction is provided with a transition groove, said transition groove being communicated with said first gas transmission passage;

at least part of the valve core is arranged in the transition groove, or the valve core faces the transition groove along the first direction, or the driving piece further comprises a pushing block movably arranged in the transition groove, and the pushing block is configured to drive the valve core along the first direction under the driving of compressed gas.

4. The changeover valve as claimed in claim 3, wherein the first fixing seat is provided with a first pressure relief hole communicating with the transition groove; or, the valve body is provided with a second pressure relief hole communicated with the conversion cavity, and the second pressure relief hole is provided with a detachable cover body.

5. The shift valve of claim 1, wherein the valve spool includes a first core, a second core, and a third core, the first core and the second core being disposed at opposite ends of the third core, the shift cavity including a first chamber, a second chamber, and a third chamber, the first chamber and the second chamber being disposed at opposite ends of the third chamber, a gap being present between the third core and the third chamber, and a length of the valve spool in the first direction being greater than a length of the shift cavity in the first direction, the third chamber having a first opening and a second opening in the first direction; the first chamber and the third chamber communicate when the valve spool is in the first position, and the second core blocks the second opening, the second chamber and the third chamber communicate when the valve spool is in the second position, and the first core blocks the first opening.

6. The changeover valve according to claim 5, wherein an outer peripheral side of the first core is provided with a first convex portion, an outer peripheral side of the second core is provided with a second convex portion, an inner peripheral side of the third chamber is provided with a first step portion and a second step portion, the second convex portion abuts against the second step portion when the spool is in the first position, and the first convex portion abuts against the first step portion when the spool is in the second position; the third core body is provided with a first groove and a second groove which are arranged at intervals, the first groove and the second groove are respectively arranged at two ends of the second core body, a first sealing piece is arranged in the first groove, a second sealing piece is arranged in the second groove, when the valve core is at a first position, the second sealing piece is sealed between the second convex part and the second step part, and when the valve core is at a second position, the first sealing piece is sealed between the first convex part and the first step part.

7. Switching valve as claimed in any of the claims 1-6, characterized in that the valve body is provided in plurality.

8. The changeover valve as claimed in claim 7, wherein a plurality of said valve bodies are connected in series in said first direction, and a plurality of said changeover chambers are communicated in series in said first direction.

9. The changeover valve as claimed in claim 7, wherein a plurality of said valve bodies are distributed in the second direction and are each sealingly connected to said drive member.

10. A delivery apparatus comprising a changeover valve according to any one of claims 1 to 9 provided at a final output and a final output capable of outputting a first liquid or a second liquid through the changeover valve.

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