CN210088132U

CN210088132U - Electromagnetic three-position three-way valve

Info

Publication number: CN210088132U
Application number: CN201920821452.4U
Authority: CN
Inventors: 卢宇凡; 江宇
Original assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Current assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-02-18
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses an electromagnetism tribit three-way valve, include: the valve body and the valve body are internally provided with a gas path, and the gas path comprises a gas inlet channel, an upper valve cavity, a working cavity, a lower valve cavity and a gas outlet channel which are arranged in sequence; the valve port component is movably arranged in the lower valve cavity and divides the lower valve cavity into a first chamber communicated with the working cavity and a second chamber communicated with the air outlet channel; the valve port assembly is provided with an air passage for communicating the first chamber and the second chamber; the piston assembly is arranged in the gas circuit and comprises a valve rod, an upper valve core and a lower valve core which are arranged on the valve rod and are in baffle shapes; the upper valve core is movably arranged in the upper valve cavity, and the lower valve core is movably arranged in the second chamber; and the electromagnetic driving mechanism is arranged on the valve body, is connected with the valve rod and is used for driving the piston assembly to move in the gas path. The electromagnetic three-position three-way valve can realize that one electromagnetic driving mechanism drives the piston assembly to switch at three positions, and reduces the manufacturing cost of the electromagnetic three-position three-way valve.

Description

Electromagnetic three-position three-way valve

Technical Field

The utility model relates to a gas utensil technical field especially relates to an electromagnetism tribit three-way valve.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and variety from the simplest shut-off valves to the various valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The three-position three-way electromagnetic valve is one of valves, and the current three-position three-way electromagnetic valve is generally driven by two electromagnetic driving mechanisms, so that the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an electromagnetism tribit three-way valve is provided, its removal that only comes piston assembly through an electromagnetic mechanism is with low costs.

In order to achieve the purpose of the utility model, the utility model adopts the following technical proposal:

an electromagnetic three-position, three-way valve comprising:

the gas path comprises a gas inlet channel, an upper valve cavity, a working cavity, a lower valve cavity and a gas outlet channel which are arranged in sequence; the valve body is also provided with a working air port communicated with the working cavity, and the working cavity and the working air port form a working passage;

the valve port assembly is movably arranged in the lower valve cavity and divides the lower valve cavity into a first chamber communicated with the working cavity and a second chamber communicated with the gas outlet channel; the valve port assembly is provided with a gas passage for communicating the first chamber and the second chamber;

the piston assembly is arranged in the gas path and comprises a valve rod, an upper valve core and a lower valve core, wherein the upper valve core and the lower valve core are arranged on the valve rod and are in baffle shapes; the upper valve core is movably arranged in the upper valve cavity, and the lower valve core is movably arranged in the second chamber;

and the electromagnetic driving mechanism is arranged on the valve body, is connected with the valve rod and is used for driving the piston assembly to move in the gas path.

The electromagnetic three-position three-way valve has the advantages that the movable valve port assembly is arranged in the gas circuit of the valve body, so that the electromagnetic driving mechanism can drive the piston assembly to be switched in three positions, two electromagnetic driving mechanisms are not needed, the number of the electromagnetic driving mechanisms is reduced, and the manufacturing cost of the electromagnetic three-position three-way valve is reduced. In addition, the air outlet of the air inlet channel, the air inlet of the working cavity and the air outlet of the air passage are valve ports, the upper valve core and the lower valve core are of baffle structures, the valve cores adopt baffles, and each valve port only relates to an opening state and a closing state.

In one embodiment, the electromagnetic driving mechanism includes a magnetic bracket mounted on the valve body, a fixed iron core mounted on the magnetic bracket, a coil bracket sleeved on the fixed iron core, a coil sleeved on the coil bracket, and a movable iron core slidably disposed in the fixed iron core; the movable iron core is connected with a valve rod of the piston assembly.

In one embodiment, the valve port assembly comprises a stop block, an annular stop membrane and a push block spring linked with the stop block, the gas passage is arranged on the stop block, and the stop membrane surrounds the stop block and is connected with the stop block and the valve body; the push block spring is used for driving the stop block to automatically reset. The arrangement of the baffle film can enable the baffle block to move relative to the valve body on one hand, and can prevent gas in the first chamber from entering the second chamber on the other hand.

In one embodiment, the blocking membrane is connected with the valve body through a membrane fixing block.

In one embodiment, the valve port assembly includes a stopper and an annular elastic baffle, the gas passage is disposed on the stopper, and the elastic baffle is made of an elastic metal material. The elastic baffle piece surrounds the stop block and is connected with the stop block and the valve body. The check block and the valve body are connected through the elastic separation blade made of the elastic metal material, so that the check block can move relative to the valve body and can automatically reset under the restoring force of the elastic separation blade.

In one embodiment, the upper valve core and the lower valve core are both arranged separately from the valve rod and are detachably connected with the valve rod, which can facilitate the replacement of the upper valve core and the lower valve core.

In one embodiment, the upper valve core and the lower valve core are sleeved on the valve rod and are in threaded connection with the valve rod. Through setting up case and case all with valve rod threaded connection, can adjust the position of case and case on the valve rod according to actual need to make case and case homoenergetic move to appointed position accurately. In other embodiments, both the upper valve core and the lower valve core can be integrally arranged with the valve rod.

In one embodiment, the piston assembly further comprises a plunger spring, and the plunger spring is linked with a valve rod piece consisting of the valve rod, the upper valve core and the lower valve core and used for driving the piston assembly to automatically reset.

In one embodiment, a plunger spring is sleeved on the valve rod, the plunger spring is located on one side of the upper valve core, which is far away from the lower valve core, and two ends of the plunger spring respectively support against the upper valve core and the valve body. The position setting of the push plug spring can make the whole volume of the piston assembly small, and the volume of the whole electromagnetic three-position three-way valve is reduced.

In one embodiment, an upper valve core elastic layer is arranged on one side of the upper valve core, which is close to the working cavity, and on one side of the upper valve core, which is close to the air outlet of the air inlet channel; and/or a lower valve core elastic layer is arranged on one side of the lower valve core close to the valve port assembly. The upper valve core elastic layer is arranged on one side of the upper valve core close to the working cavity and one side of the upper valve core close to the air outlet of the air inlet channel, so that the upper valve core can tightly seal the air outlet of the air inlet channel or the air inlet of the working cavity; the elastic layer of the lower valve core is arranged on one side, close to the valve port assembly, of the lower valve core, so that the lower valve core can tightly seal the gas outlet of the gas passage of the valve port assembly.

Drawings

Fig. 1 is a cross-sectional view of an electromagnetic three-position three-way valve according to an embodiment of the present invention.

In the figure:

10. a valve body; 11. an air inlet channel; 12. an upper valve cavity; 13. a working chamber; 14. a lower valve cavity; 15. a first chamber; 16. a second chamber; 17. an air outlet channel;

20. an electromagnetic drive mechanism; 21. a magnetic conductive bracket; 22. fixing an iron core; 23. a coil support; 24. a coil; 25. a movable iron core;

30. a valve port assembly; 31. a stopper; 32. blocking the membrane; 321. a gas passageway; 33. a push block spring;

40. a membrane fixing block;

50. a piston assembly; 51. a valve stem; 52. an upper valve core; 53. a lower valve core; 54. a plunger spring.

Detailed Description

In the description of the present invention, it is to be understood that the terms "length", "width", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of 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 therefore, should not be construed as limiting the present invention.

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", "second", may explicitly or implicitly include one or more of that feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides an electromagnetic three-position three-way valve, which includes a valve body 10 with an internal gas circuit, an electromagnetic driving mechanism 20 disposed on the valve body 10, and an automatically resettable piston assembly 50 and an automatically resettable valve port assembly 30 disposed in the gas circuit, respectively.

The gas path comprises a gas inlet channel 11, an upper valve cavity 12, a working cavity 13, a lower valve cavity 14 and a gas outlet channel 17 which are arranged in sequence; the valve body 10 is also provided with a working air port (not shown) communicating with the working chamber 13. The working air port is used for communicating with a designated cavity structure outside the valve body, and the working cavity 13 and the working air port form a working air path; the valve port assembly 30 is movably arranged in the lower valve cavity 14, and the valve port assembly 30 divides the lower valve cavity 14 into a first chamber 15 communicated with the working cavity 13 and a second chamber 16 communicated with the air outlet channel 17; valve port assembly 30 is provided with an air passageway 321 communicating first chamber 15 and second chamber 16; the piston assembly 50 is arranged in the air passage, and the piston assembly 50 comprises a valve rod 51, an upper valve core 52 and a lower valve core 53 which are arranged on the valve rod 51 and are both in baffle shapes; one end of the valve rod 51 is connected with the electromagnetic driving mechanism 20, and the other end of the valve rod passes through the air outlet of the air inlet channel 11, the upper valve cavity 12 and the working cavity 13 and extends into the lower valve cavity 14; the upper valve core 52 is movably arranged in the upper valve cavity 12, and the lower valve core 53 is movably arranged in the second chamber 16; the electromagnetic driving mechanism is used for driving the piston assembly 50 to move in the air path, so that the piston assembly 50 is switched among three positions. In the initial state, upper valve element 52 seals the inlet of working chamber 13, upper valve chamber 12 is disconnected from working chamber 13, lower valve element 53 is disposed away from valve port assembly 30, and first chamber 15 and second chamber 16 are in communication.

The working principle of the electromagnetic three-position three-way valve is as follows:

a. first, the electromagnetic driving mechanism 20 is powered on, so that the electromagnetic driving mechanism 20 generates a driving force of F1 to the piston assembly 50, under the driving force of F1, the piston assembly 50 moves towards the direction from the lower valve chamber 14 to the upper valve chamber 12, the upper valve core 52 leaves from the inlet of the working chamber 13, the upper valve chamber 12 communicates with the working chamber 13, and the lower valve core 53 contacts the inlet of the valve port assembly 30 for sealing the passageway, the first chamber 15 and the second chamber 16 are disconnected, at this time, the piston assembly 50 switches to the first position, when the inlet 11 is connected with the gas source, the gas enters the working chamber 13 from the inlet 11 through the upper valve chamber 12, because the first chamber 15 and the second chamber 16 are disconnected, the gas in the working chamber 13 cannot flow into the outlet 17 through the first chamber 15 and the second chamber 16, and as the gas in the upper valve chamber 12 continuously enters the working chamber 13, the pressure of the gas in the working chamber 13 increases, the air pressure of the designated chamber structure outside the valve body, which is communicated with the working chamber 13 through the working air port, is also increased.

b. The driving force generated by the electromagnetic driving mechanism 20 to the piston assembly 50 is increased from F1 to F2, the lower valve core 53 pushes the valve port assembly 30 to move towards the working chamber 13, until the upper valve core 52 seals the air inlet of the air inlet channel 11, the lower valve core 53 stops pushing the valve port assembly 30 to move, at this time, the piston assembly 50 is switched to the second position, at this time, the air inlet channel 11 and the upper valve chamber 12 are disconnected, the first chamber 15 and the second chamber 16 are disconnected continuously, the air in the upper valve chamber 12 can not supply air to the working chamber 13 any more, the air in the working chamber 13 can not flow to the air outlet channel 17 through the first chamber 15 and the second chamber 16, so that the pressure of the air in the working chamber 13 is kept unchanged, and the air pressure of a specified cavity structure outside the valve body communicated with the working chamber 13 through the working air inlet is increased.

c. The power supply to the electromagnetic driving mechanism 20 is cut off, the force applied to the piston assembly 50 by the electromagnetic driving mechanism 20 disappears, the piston assembly 50 and the valve port assembly 30 both reset automatically, the upper valve core 52 seals the air inlet of the working cavity 13 again, so that the upper valve cavity 12 is disconnected from the working cavity 13, meanwhile, the lower valve core 53 is far away from the valve port assembly 30, so that the first chamber 15 is communicated with the second chamber 16, at this time, the piston assembly 50 is in the second position, the air inlet 11 cannot supply air to the working cavity 13, but the air in the working cavity 13 can pass through the first chamber 15, the air flow channel and the second chamber 16 to enter the air outlet 17, so that the pressure of the air in the working cavity 13 is gradually reduced, and the air pressure of a specified cavity structure outside the valve body communicated with the working cavity 13 through the working air inlet is increased.

When the required pressure of the working chamber 13 varies, the working chamber 13 pressure can be adjusted to the required pressure by combining the above steps.

The event the utility model discloses a three-position three-way valve through set up mobilizable valve port subassembly 30 in the gas circuit of valve body 10, can realize that an electromagnetic drive mechanism 20 drives piston assembly 50 and switches at three position, need not two electromagnetic drive mechanism 20, has reduced electromagnetic drive mechanism 20's quantity, has reduced the cost of manufacture of electromagnetism three-position three-way valve. In addition, the air outlet of the air inlet channel 11, the air inlet of the working chamber 13 and the air outlet of the air passage 321 are all valve ports, the upper valve core 52 and the lower valve core 53 are both of baffle structures, the valve cores adopt baffles, and each valve port only relates to an opening state and a closing state, so that the structure is simple, the sealing is reliable, and the anti-pollution capacity is strong.

In the present embodiment, the electromagnetic driving mechanism 20 includes a magnetic bracket 21 mounted on the valve body 10, a fixed iron core 22 mounted on the magnetic bracket 21, a coil bracket 23 sleeved on the fixed iron core 22, a coil 24 sleeved on the coil bracket 23, and a movable iron core 25 slidably disposed in the fixed iron core 22; the plunger 25 is connected to a valve stem 51 of the piston assembly 50. When the coil 24 is energized, the stationary core 22 generates a driving force to the movable core 25 to move the piston assembly 50.

In the present embodiment, the valve port assembly 30 includes a stopper 31, an annular stopper film 32, and a push spring 33 for linking the stopper 31, the gas passage 321 is provided on the stopper 31, the stopper film 32 surrounds the stopper 31 and connects the stopper 31 and the valve body 10 to allow the stopper 31 to move relative to the valve body 10, so that the gas in the first chamber 15 does not flow into the second chamber 16 from between the stopper 31 and the inner wall of the valve body 10; the push spring 33 is used to drive the stopper 31 to automatically return.

The barrier film 32 is connected with the valve body 10 through a film fixing block 40. The membrane fixing block 40 may be provided integrally with the valve body 10 or may be provided separately from the valve body 10.

In other embodiments, the pusher spring 33 may be eliminated and the diaphragm 32 replaced with a resilient flap made of a resilient metal material. The stopper 31 and the valve body 10 are connected by the elastic baffle made of the elastic metal material, so that the stopper 31 can move relative to the valve body 10 and can automatically reset under the restoring force of the elastic baffle.

In the present embodiment, the upper valve core 52 and the lower valve core 53 are both provided separately from the valve rod 51, and are both detachably connected to the valve rod 51, so as to facilitate replacement of the upper valve core 52 and the lower valve core 53. Preferably, the upper valve core 52 and the lower valve core 53 are both sleeved on the valve rod 51 and are both in threaded connection with the valve rod 51. By arranging the upper valve core 52 and the lower valve core 53 to be in threaded connection with the valve rod 51, the positions of the upper valve core 52 and the lower valve core 53 on the valve rod 51 can be adjusted according to actual needs, so that the upper valve core 52 and the lower valve core 53 can be accurately moved to the designated positions. In other embodiments, the upper valve core 52 and the lower valve core 53 may be provided integrally with the valve rod 51.

In other embodiments, an upper valve core elastic layer may be disposed on a side of the upper valve core 52 close to the working chamber 13 and a side of the upper valve core 52 close to the air outlet of the air inlet passage 11, so that the upper valve core 52 can tightly seal the air outlet of the air inlet passage 11 or the air inlet of the working chamber 13. A lower valve element elastic layer may be disposed on a side of the lower valve element 53 close to the valve port assembly 30, so that the lower valve element 53 can tightly seal the air outlet of the air passage 321 of the valve port assembly 30. The upper valve core elastic layer and the lower valve core elastic layer are preferably made of silica gel materials which are stable in performance and not prone to corrosion.

In this embodiment, the piston assembly 50 further includes a plunger spring 54 cooperating with the valve rod 51 formed by the valve rod 51, the upper valve core 52 and the lower valve core 53 for urging the piston assembly 50 to be automatically reset. In the present embodiment, the plunger spring 54 is sleeved on the valve rod 51, the plunger spring 54 is located on a side of the upper valve core 52 away from the lower valve core 53, and two ends of the plunger spring 54 respectively abut against the upper valve core 52 and the valve body 10.

Further, one end of the upper valve core 52 close to the plunger spring 54 extends into the plunger spring 54 for positioning the plunger spring 54 and preventing the plunger spring 54 from shaking in the valve body 10.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An electromagnetic three-position, three-way valve comprising:

the gas path is arranged in the valve body (10) and comprises a gas inlet channel (11), an upper valve cavity (12), a working cavity (13), a lower valve cavity (14) and a gas outlet channel (17) which are arranged in sequence; the valve body (10) is also provided with a working air port communicated with the working cavity (13), and the working cavity (13) and the working air port form a working passage;

the valve port assembly (30) can be automatically reset, the valve port assembly (30) is movably arranged in the lower valve cavity (14), and the valve port assembly (30) divides the lower valve cavity (14) into a first chamber (15) communicated with the working cavity (13) and a second chamber (16) communicated with the gas outlet channel (17); the valve port assembly (30) is provided with a gas passage (321) communicating the first chamber (15) and the second chamber (16);

the piston assembly (50) capable of automatically resetting is arranged in the air path, and the piston assembly (50) comprises a valve rod (51), an upper valve core (52) and a lower valve core (53) which are arranged on the valve rod (51) and are both in baffle shapes; the upper valve core (52) is movably arranged in the upper valve cavity (12), and the lower valve core (53) is movably arranged in the second chamber (16);

and the electromagnetic driving mechanism (20) is arranged on the valve body (10) and connected with the valve rod and is used for driving the piston assembly (50) to move in the air path.

2. The electromagnetic three-position three-way valve according to claim 1, wherein the electromagnetic driving mechanism (20) comprises a magnetic conductive bracket (21) arranged on the valve body (10), a fixed iron core (22) arranged on the magnetic conductive bracket (21), a coil bracket (23) sleeved on the fixed iron core (22), a coil (24) sleeved on the coil bracket (23), and a movable iron core (25) slidably arranged in the fixed iron core (22); the movable iron core (25) is connected with a valve rod (51) of the piston assembly (50).

3. The electromagnetic three-position three-way valve according to claim 1, characterized in that the valve port assembly (30) comprises a stopper (31), an annular stopper membrane (32) and a push spring (33) which is linked with the stopper (31), the gas passage (321) is arranged on the stopper (31), and the stopper membrane (32) surrounds the stopper (31) and connects the stopper (31) and the valve body (10); the push block spring (33) is used for driving the stop block (31) to automatically reset.

4. The three-position, three-way, electromagnetic valve according to claim 3, characterized in that the membrane (32) is connected to the valve body (10) by means of a membrane fixing block (40).

5. The electromagnetic three-position, three-way valve according to claim 1, characterized in that the valve port assembly (30) comprises a stopper (31) and an annular elastic flap, the gas passage (321) is provided on the stopper (31), and the elastic flap is made of an elastic metal material; the elastic baffle plate surrounds the stop block (31) and is connected with the stop block (31) and the valve body (10).

6. The three-position, electromagnetic three-way valve according to claim 1, characterized in that both the upper spool (52) and the lower spool (53) are provided separately from the valve stem (51) and are both detachably connected to the valve stem (51).

7. The three-position three-way solenoid valve according to claim 6, wherein the upper valve core (52) and the lower valve core (53) are sleeved on the valve rod (51) and are in threaded connection with the valve rod (51).

8. The electromagnetic three-position, three-way valve according to claim 1, characterized in that the piston assembly (50) further comprises a plug spring (54), the plug spring (54) cooperating with a valve stem member consisting of the valve stem (51), the upper valve core (52) and the lower valve core (53) for urging the piston assembly (50) to automatically return.

9. The three-position three-way electromagnetic valve according to claim 8, wherein a plunger spring (54) is sleeved on the valve rod (51), the plunger spring (54) is positioned on one side of the upper valve core (52) far away from the lower valve core (53), and two ends of the plunger spring (54) respectively abut against the upper valve core (52) and the valve body (10).

10. The three-position three-way solenoid valve according to claim 1, characterized in that an upper valve core elastic layer is arranged on one side of the upper valve core (52) close to the working chamber (13) and one side of the upper valve core (52) close to the air outlet of the air inlet channel (11); and/or a lower valve core elastic layer is arranged on one side, close to the valve port assembly (30), of the lower valve core (53).