Change-over valve

Abstract

The conversion valve comprises a valve body and two ejector rods, a first cavity, a third cavity and two second cavities are formed in the valve body, and the two second cavities are independently arranged and communicate with the first cavity and the third cavity correspondingly; the two ejector rods correspond to the two second cavities one to one, each ejector rod penetrates through the corresponding second cavity, and the ejector rods can do reciprocating motion relative to the valve body so as to control the corresponding second cavities to be switched between the first cavity and the third cavity in a communicating mode. When the change-over valve works, the medium flow channels are switched; the first chamber and the third chamber are separated by the two second chambers, so that the distance between the first chamber and the third chamber can be increased, and the change-over valve can increase the calibers of the channel ports at the positions of the first chamber and the third chamber as required; therefore, the change-over valve can be suitable for switching control over large-flow media.

Description

Technical Field

[0001] The utility model belongs to the technical field related to flow control, and in particular relates to a conversion valve. Background Art

[0002] The conversion valve has multiple medium flow channels. When the conversion valve is working, the movable iron core is used to control the opening / closing of the valve port during the telescopic movement to achieve the switching between the multiple medium flow channels in the conversion valve. At present, the existing conversion valve usually uses a movable iron core to directly control the opening / closing of the valve port. Due to the movement stroke of the movable iron core, the distance between the inlet and outlet of the multiple medium flow channels on the conversion valve is relatively close, which makes the diameter of the inlet and outlet on the conversion valve smaller, and cannot meet the use requirements of the medium flow channel with a large diameter. Utility Model Content

[0003] In view of this, it is necessary to provide a conversion valve for solving the above technical problems.

[0004] A conversion valve, comprising:

[0005] A valve body, formed with a first chamber, a third chamber and two second chambers, wherein the two second chambers are independently arranged and communicated with the first chamber and the third chamber respectively;

[0006] Two push rods correspond one to one with the two second chambers, wherein each of the push rods passes through the corresponding second chamber, and the push rods can make reciprocating motion relative to the valve body to control the corresponding second chamber to switch between the first chamber and the third chamber.

[0007] It can be understood that the reciprocating motion of the push rod in the valve body is used to control the communication between the corresponding second chamber and the first chamber or the second chamber, so that the switching of the medium flow channel can be achieved when the conversion valve is working; and the conversion valve uses two second chambers to separate the first chamber and the third chamber, so that the distance between the first chamber and the third chamber can be increased, so that the conversion valve can increase the diameter of the channel opening at the location of the first chamber and the location of the third chamber according to needs, so that the conversion valve can be suitable for switching control of large flow media.

[0008] In one embodiment, the valve body is formed with a first valve port and a second valve port in the region where each second chamber is located, respectively, and the second chamber can be communicated with the first chamber through the first valve port, and the second chamber can be communicated with the third chamber through the second valve port;

[0009] The push rod can selectively block the first valve port or the second valve port.

[0010] In one embodiment, the top rod includes a first rod body and a second rod body, the first rod body is separately arranged relative to the second rod body and connected to the second rod body;

[0011] Wherein, the center line of the first rod body and the center line of the second rod body are arranged on the same straight line.

[0012] It can be understood that by connecting the split first rod body and the second rod body to form a push rod, the processing accuracy required for the production of the push rod can be reduced, which has the effect of reducing costs.

[0013] In one embodiment, the first rod is connected to the second rod in a threaded manner.

[0014] It can be understood that the first rod body is connected to the second rod body in a threaded manner, so that the assembly connection between the first rod body and the second rod body can be facilitated.

[0015] In one of the embodiments, a balancing through hole is provided on the push rod, and the first chamber and the third chamber can be connected through the balancing through hole.

[0016] It can be understood that the balancing hole on the push rod is used to connect the first chamber and the second chamber, so that the medium in the first chamber and the third chamber can be connected. In this way, the medium resistance encountered by the push rod when it reciprocates relative to the valve body can be reduced, and it is easier to drive the push rod to reciprocate on the valve body.

[0017] In one embodiment, the valve body is provided with a first channel opening, a second channel opening, a third channel opening and a fourth channel opening for allowing the medium to enter and exit the valve body;

[0018] Wherein, the first channel opening is communicated with one of the second chambers, and the second channel opening is communicated with another of the second chambers; the third channel opening is communicated with the first chamber, and the fourth channel opening is communicated with the third chamber.

[0019] In one embodiment, the conversion valve further includes two core assemblies, which are mounted on the valve body and correspond one to one to the two push rods, and the push rods can make reciprocating motion relative to the valve body under the pushing of the corresponding core assemblies.

[0020] In one embodiment, the core assembly includes a movable core, a first noise reduction component is connected to the movable core, and the movable core can push the corresponding push rod through the first noise reduction component.

[0021] It can be understood that, by utilizing the structural characteristics of the first noise reduction member, the noise generated when the movable iron core abuts against the corresponding push rod can be reduced, thereby having the effect of reducing the working noise of the conversion valve.

[0022] In one embodiment, the core assembly includes a movable core and a fixed core, the movable core and the fixed core are arranged face to face, and the movable core can reciprocate relative to the fixed core to push the corresponding ejector pin;

[0023] Wherein, a second noise reduction component is arranged on the movable iron core and / or the fixed iron core, and at least a part of the second noise reduction component is arranged at a position between the movable iron core and the fixed iron core.

[0024] It can be understood that, by utilizing the structural characteristics of the second noise reduction member, the noise generated when the movable iron core abuts against the fixed iron core can be reduced, thereby having the effect of reducing the working noise of the conversion valve.

[0025] In one embodiment, the conversion valve further includes two elastic members, the two elastic members correspond to the two push rods one by one, and the elastic members are arranged on a side of the push rod away from the corresponding core assembly to drive the push rod to elastically reset.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The conversion valve for which protection is requested in the present application uses the reciprocating motion of the push rod in the valve body to control the connection between the corresponding second chamber and the first chamber or the second chamber, thereby realizing the switching of the medium flow channel when the conversion valve is working; and the conversion valve uses two second chambers to separate the first chamber and the third chamber, thereby increasing the distance between the first chamber and the third chamber, so that the conversion valve can increase the caliber of the channel openings at the first chamber and the third chamber as needed, thereby making the conversion valve suitable for switching control of large-flow media. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the structure of a conversion valve provided in one embodiment of the present application;

[0030] Figure 2A cross-sectional view of a conversion valve provided in one embodiment of the present application;

[0031] Figure 3 for Figure 2 Enlarged view of the middle P part;

[0032] Figure 4 This is a partial exploded view of the present application.

[0033] 1. The valve body includes a first valve body, a second valve body, a second valve body, a third valve body, a third valve body, a fourth valve body, a fourth valve body, a fourth valve body, a fourth valve body, a fifth ... DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that when an element is referred to as being "provided on" another element, it may be directly provided on the other element or there may be a central element. When an element is considered to be "provided on" another element, it may be directly provided on the other element or there may be a central element at the same time. When an element is considered to be "fixed to" another element, it may be directly fixed to the other element or there may be a central element at the same time.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] like Figure 2 , Figure 4 As shown, the conversion valve 100 provided in one embodiment of the present application includes a valve body 10 and two push rods 20. The valve body 10 is formed with a first chamber 101, a third chamber 103 and two second chambers 102. The two second chambers 102 are independently arranged and are respectively connected to the first chamber 101 and the third chamber 103; the two push rods 20 correspond to the two second chambers 102 one by one, wherein each push rod 20 is respectively arranged to penetrate the corresponding second chamber 102, and the push rod 20 can make a reciprocating motion relative to the valve body 10 to control the corresponding second chamber 102 to switch between the first chamber 101 and the third chamber 103. In other words, when the conversion valve 100 is working, the switching between the medium flow channels in the valve body 10 is controlled by the reciprocating motion of the push rod 20 in the valve body 10. Here, when the corresponding second chamber 102 is connected to the first chamber 101 or the second chamber 103, a medium flow channel can be formed.

[0038] It can be understood that the conversion valve 100 uses two second chambers 102 to separate the first chamber 101 and the third chamber 103, which can increase the distance between the first chamber 101 and the third chamber 103, so that the conversion valve 100 can increase the diameter of the channel opening at the location of the first chamber 101 and the location of the third chamber 103 as needed, thereby making the conversion valve 100 suitable for switching control of large flow media.

[0039] In the present application, the valve body 10 is provided with a first channel opening 11, a second channel opening 12, a third channel opening 13 and a fourth channel opening 14 for medium to enter and exit the valve body 10; wherein the first channel opening 11 is communicated with one of the second chambers 102, the second channel opening 12 is communicated with another second chamber 102; the third channel opening 13 is communicated with the first chamber 101, and the fourth channel opening 14 is communicated with the third chamber 103. Since the two second chambers 102 are communicated with the first chamber 101 and the third chamber 103 respectively, the third channel opening 13 and the fourth channel opening 14 can be communicated with the first channel opening 11 and the second channel opening 12 respectively at the same time.

[0040] like Figure 1 , Figure 4 As shown, in one embodiment, the first channel port 11 and the second channel port 12 are arranged on one side surface of the valve body 10, and the third channel port 13 and the fourth channel port 14 are arranged on the other side surface of the valve body 10. In order to facilitate connection and communication with an external pipeline, the conversion valve 100 of this embodiment can be specifically connected and communicated with a first connecting pipe 111 on the first channel port 11, connected and communicated with a second connecting pipe 121 on the second channel port 12, connected and communicated with a third connecting pipe 131 on the third channel port 13, and connected and communicated with a fourth connecting pipe 141 on the fourth channel port 14.

[0041] like Figure 4 As shown, in this embodiment, a transition plate 15 is detachably connected to the valve body 10, the first connecting pipe 111 and the second connecting pipe 121 are connected to the transition plate 15 by threads, and the third connecting pipe 131 and the fourth connecting pipe 141 are connected to the valve body 10 by threads. Of course, in other embodiments, the first connecting pipe 111 and / or the second connecting pipe 121 can also be directly connected to the valve body 10 by threads, and the third connecting pipe 131 and the fourth connecting pipe 141 are connected to the valve body 10 by means of the transition plate, which will not be elaborated here.

[0042] like Figure 3 As shown, in one embodiment, the valve body 10 is respectively formed with a first valve port 1021 and a second valve port 1022 in the area where each second chamber 102 is located, and the second chamber 102 can be communicated with the first chamber 101 through the first valve port 1021, and the second chamber 102 can be communicated with the third chamber 103 through the second valve port 1022; the push rod 20 can selectively block the first valve port 1021 or the second valve port 1022. That is, when the conversion valve 100 of this embodiment is working, the push rod 20 can switch between the communication between the second chamber 102 and the third chamber 103 and the communication between the second chamber 102 and the first chamber 101 by selectively blocking the first valve port 1021 or the second valve port 1022.

[0043] like Figure 2 , Figure 3 As shown, in one embodiment, the push rod 20 includes a first rod body 21 and a second rod body 22, wherein the first rod body 21 is disposed separately from the second rod body 22 and connected to the second rod body 22; wherein the center line of the first rod body 21 and the center line of the second rod body 22 are disposed on the same straight line. In other words, the push rod 20 can be formed by connecting the first rod body 21 and the second rod body 22 of a shorter length, which can reduce the processing accuracy required for the production of the push rod 20 and has the effect of reducing costs. Of course, in other embodiments, the push rod 20 can also be provided in three sections, four sections, etc.

[0044] like Figure 3 As shown, in this embodiment, a first sealing gasket 211 is sleeved on the first rod body 21, and a second sealing gasket 221 is sleeved on the second rod body 22. When the push rod 20 reciprocates relative to the valve body 10, the push rod 20 can block the first valve port 1021 with the first sealing gasket 211 and block the second valve port 1022 with the second sealing gasket 221, so as to ensure the sealing performance when the push rod 20 blocks the first valve port 1021 or the second valve port 1022. Of course, for those skilled in the art, the push rod 20 can also use a whole sealing gasket to achieve the blocking of the first valve port 1021 or the second valve port 1022.

[0045] In one embodiment, the first rod 21 is connected to the second rod 22 in a threaded manner, so that the assembly connection between the first rod 21 and the second rod 22 can be facilitated. Of course, in other embodiments, the first rod 21 and the second rod 22 can also be connected in a buckle manner.

[0046] like Figure 2 , Figure 3 As shown, in one embodiment, a balancing through hole 201 is provided on the push rod 20, and the first chamber 101 and the third chamber 103 can be communicated through the balancing through hole 201, so that the medium in the first chamber 101 and the third chamber 103 can be communicated. Here, the center line of the balancing through hole 201 and the center line of the push rod 20 are arranged on the same straight line, so that the medium resistance encountered by the push rod 20 when it reciprocates relative to the valve body 10 can be reduced, and it is convenient to drive the push rod 20 to reciprocate on the valve body 10, so that the conversion valve 100 can be suitable for low-voltage starting when working.

[0047] like Figure 2 As shown, in one embodiment, the conversion valve 100 further includes two core assemblies 30, which are mounted on the valve body 10 and correspond to the two push rods 20 one by one, and the push rods 20 can make reciprocating motion relative to the valve body 10 under the push of the corresponding core assemblies 30, so that the automatic control of the conversion valve 100 can be achieved during operation. It should be noted that the core assemblies 30 are equipped with winding coils 40, and the control of the operation of the core assemblies 30 is achieved by controlling the power on / off of the winding coils 40, that is, the control of the operation of the conversion valve 100 can be achieved.

[0048] like Figure 2 As shown, in one embodiment, the core assembly 30 includes a movable core 31, and the movable core 31 is connected to a first noise reduction member 301, and the movable core 31 can push the corresponding push rod 20 through the first noise reduction member 301, so that the collision between the movable core 31 and the push rod 20 can be buffered, and the noise generated when the movable core 31 abuts against the corresponding push rod 20 can be reduced, thereby reducing the working noise of the conversion valve 100. Here, the first noise reduction member 301 is connected to the movable core 31 in a sleeved manner, and the movable core 31 can be specifically set as a rubber sleeve or a silicone sleeve.

[0049] It can be understood that the core assembly 30 also includes a fixed core 32 and a core spring 33. The movable core 31 is arranged face to face with the fixed core 32. The core spring 33 is arranged between the movable core 31 and the fixed core 32. The movable core 31 can generate a magnetic field after the winding coil 40 is energized and under the action of the core spring 33, it can make reciprocating motion relative to the fixed core 32 to push the corresponding push rod 20.

[0050] like Figure 2 As shown, in this embodiment, a second noise reduction member 302 is provided on the movable iron core 31 and / or the fixed iron core 32, and at least a portion of the second noise reduction member 302 is provided between the movable iron core 31 and the fixed iron core 32, so that the second noise reduction member 302 can buffer the collision between the movable iron core 31 and the fixed iron core 32, thereby reducing the noise generated when the movable iron core 31 abuts against the fixed iron core 32, thereby reducing the working noise of the conversion valve 100. Here, the second noise reduction member 302 is configured as a sealing ring, which is embedded in the movable iron core 31. Of course, in other embodiments, the second noise reduction member 302 can also be configured as a rubber block, a silicone ring, etc.

[0051] like Figure 1 , Figure 2 As shown, in one embodiment, the conversion valve 100 further includes two elastic members 50, the two elastic members 50 correspond to the two push rods 20 one by one, and the elastic members 50 are arranged on the side of the push rod 20 away from the corresponding iron core assembly 30, and are used to drive the push rod 20 to elastically reset, so that when the movable iron core 31 loses the push to the push rod 20 and moves toward the fixed iron core 32, the push rod 20 can be elastically reset under the drive of the corresponding elastic member 50, so as to meet the use requirements of the conversion valve 100. Here, the elastic member 50 is set as a spring, which can be specifically pressed and fixed to the valve body 10 by the cover plate 16, and the push force of the elastic member 50 when the push to the push rod 20 is elastically pushed when the elastic member 50 is pre-compressed is smaller than the effect of the iron core spring 33 when the push to the push rod 20 is pushed by the movable iron core 31, so that when the conversion valve 100 is not working, the first valve port 1021 on the valve body 10 is in a blocked state. Of course, in other embodiments, the elastic member 50 can also be set as a rubber sleeve with high elasticity, etc., which will not be elaborated here.

[0052] As can be seen from the above, when the two winding coils 40 on the conversion valve 100 of the present application are not energized, the first valve ports 1021 on the two second chambers 102 on the valve body 10 are blocked by the first sealing pads 211 on the push rod 20, so that the first connecting pipe 111 and the second connecting pipe 121 on the conversion valve 100 are respectively connected to the fourth connecting pipe 141; when the two winding coils 40 on the conversion valve 100 are energized, the second valve ports 1022 on the two second chambers 102 on the valve body 10 are blocked by the first sealing pads 211 on the push rod 20. The second sealing gasket 221 is blocked, so that the first connecting pipe 111 and the second connecting pipe 121 on the conversion valve 100 are respectively connected with the third connecting pipe 131; if one of the two winding coils 40 on the conversion valve 100 is powered on and the other is powered off, the first connecting pipe 111 on the valve body 10 is connected with the third connecting pipe 131, and the second connecting pipe 121 is connected with the fourth connecting pipe 141; or, the first connecting pipe 111 is connected with the fourth connecting pipe 141, and the second connecting pipe 121 is connected with the third connecting pipe 131. That is, the conversion valve 100 can realize the switching of four medium flow channels when working.

[0053] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A conversion valve, characterized in that: The conversion valve (100) comprises: A valve body (10) is formed with a first chamber (101), a third chamber (103) and two second chambers (102), wherein the two second chambers (102) are independently arranged and are respectively connected to the first chamber (101) and the third chamber (103); Two push rods (20) correspond one to one with the two second chambers (102), wherein each of the push rods (20) is respectively arranged to penetrate the corresponding second chamber (102), and the push rod (20) can make reciprocating motion relative to the valve body (10) to control the corresponding second chamber (102) to switch between the first chamber (101) and the third chamber (103).

2. The switching valve according to claim 1, characterized in that: The valve body (10) is respectively formed with a first valve port (1021) and a second valve port (1022) in the area where each second chamber (102) is located, and the second chamber (102) can be communicated with the first chamber (101) through the first valve port (1021), and the second chamber (102) can be communicated with the third chamber (103) through the second valve port (1022); The push rod (20) can selectively block the first valve port (1021) or the second valve port (1022).

3. The switching valve according to claim 1, characterized in that: The top rod (20) comprises a first rod body (21) and a second rod body (22); the first rod body (21) is arranged separately from the second rod body (22) and is connected to the second rod body (22); Wherein, the center line of the first rod body (21) and the center line of the second rod body (22) are arranged on the same straight line.

4. The switching valve according to claim 3, characterized in that: The first rod body (21) is connected to the second rod body (22) in a threaded manner.

5. The switching valve according to claim 1, characterized in that: The push rod (20) is provided with a balancing through hole (201), and the first chamber (101) and the third chamber (103) can be communicated with each other through the balancing through hole (201).

6. The switching valve according to claim 1, characterized in that: The valve body (10) is provided with a first channel opening (11), a second channel opening (12), a third channel opening (13) and a fourth channel opening (14) for allowing a medium to enter and exit the valve body (10); Wherein, the first channel opening (11) is connected to one of the second chambers (102), and the second channel opening (12) is connected to another of the second chambers (102); the third channel opening (13) is connected to the first chamber (101), and the fourth channel opening (14) is connected to the third chamber (103).

7. The switching valve according to claim 1, characterized in that: The conversion valve (100) further comprises two core assemblies (30), the two core assemblies (30) being mounted on the valve body (10) and corresponding one to one to the two push rods (20), and the push rods (20) being capable of reciprocating relative to the valve body (10) under the pushing of the corresponding core assemblies (30).

8. The switching valve according to claim 7, characterized in that: The iron core assembly (30) comprises a movable iron core (31), a first noise reduction component (301) is connected to the movable iron core (31), and the movable iron core (31) can push the corresponding push rod (20) through the first noise reduction component (301).

9. The switching valve according to claim 7, characterized in that: The core assembly (30) comprises a movable core (31) and a fixed core (32), wherein the movable core (31) and the fixed core (32) are arranged face to face, and the movable core (31) can make a reciprocating motion relative to the fixed core (32) to push the corresponding ejector rod (20); Wherein, a second noise reduction component (302) is arranged on the movable iron core (31) and / or the fixed iron core (32), and at least a portion of the second noise reduction component (302) is arranged at a position between the movable iron core (31) and the fixed iron core (32).

10. The switching valve according to claim 7, characterized in that: The conversion valve (100) further comprises two elastic members (50), the two elastic members (50) corresponding one to the two push rods (20), the elastic members (50) being arranged on a side of the push rod (20) away from the corresponding iron core assembly (30) and being used to drive the push rod (20) to elastically return to its original position.

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