CN111237537B

CN111237537B - Signal feedback device and valve

Info

Publication number: CN111237537B
Application number: CN202010225436.6A
Authority: CN
Inventors: 周天丽; 鄂威; 卜义昭; 邓岩; 李忠航; 张馨; 于杨
Original assignee: Anshan Solenoid Valve Co ltd
Current assignee: Anshan Solenoid Valve Co ltd
Filing date: 2020-03-26
Publication date: 2024-07-05
Anticipated expiration: 2040-03-26

Abstract

The application relates to the technical field of valves, in particular to a signal feedback device and a valve. The signal feedback device is used for the valve and comprises a first magnetic piece, a second magnetic piece and a signal element; the first magnetic piece is positioned in the valve and connected with the moving piece of the valve so as to change the distance between the first magnetic piece and the second magnetic piece to generate magnetic force; the second magnetic part is positioned outside the valve, and can touch the switch of the signal element or disconnect the switch under the action of the magnetic force. According to the signal feedback device provided by the application, the first magnetic part is arranged in the valve, the second magnetic part is arranged outside the valve, the first magnetic part and the second magnetic part are not contacted with each other, and the on-off state of the signal element is changed through magnetic force, so that the working medium in the valve has no hidden trouble of leakage.

Description

Signal feedback device and valve

Technical Field

The application relates to the technical field of valves, in particular to a signal feedback device and a valve.

Background

The existing signal feedback device for the valve is mainly of a mechanical type and a passive contact type. For a mechanical signal feedback device, a moving part is required to be in direct contact with a switch of the signal feedback device during operation, and medium leakage is easy to occur during operation of the valve. For the passive contact type signal feedback device, the working principle is that the Hall element senses a magnetic field, the magnetic field range is larger during working, and the signal feedback output error is larger.

Disclosure of Invention

The application aims to provide a signal feedback device and a valve, which are used for solving the problem that medium leakage is easy to cause when the valve works.

The application provides a signal feedback device which is used for a valve, and comprises a first magnetic piece, a second magnetic piece and a signal element;

The first magnetic piece is positioned in the valve and connected with the moving piece of the valve so as to change the distance between the first magnetic piece and the second magnetic piece to generate magnetic force;

The second magnetic part is positioned outside the valve, and can touch the switch of the signal element or disconnect the switch under the action of the magnetic force.

In the above technical solution, further, the device further comprises a supporting seat;

The supporting seat is connected with the valve, a limiting groove is formed in the supporting seat, the second magnetic piece is located in the limiting groove, and the limiting groove is used for limiting the movement direction of the second magnetic piece;

The signal element is connected with one end of the supporting seat far away from the valve, and the signal element is arranged at the notch of the limiting groove.

In the above technical solution, further, the first magnetic member includes a first magnet and a protective housing, where the protective housing is covered outside the first magnet;

The second magnetic piece comprises a second magnet and a contact piece, the contact piece is connected with one end, close to the signal element, of the second magnet, and the contact piece is used for touching the signal element.

In the above technical solution, further, the device further comprises a buffer member;

the buffer piece is connected with the supporting seat, and the signal element is positioned between the buffer piece and the supporting seat.

In the above technical solution, further, the buffer member is provided with a first through hole, and the connecting line of the signal element can pass through the first through hole.

In the above technical solution, further, the material of the buffer member is an insulating material.

In the technical scheme, the protective cap is further included;

the protective cap is connected with the supporting seat, and the protective cap cover is arranged outside the buffer piece;

The protective cap is provided with a second through hole, and the connecting wire of the signal element can penetrate out of the second through hole.

The application also provides a valve, which comprises the signal feedback device.

In the above technical solution, further, the valve comprises a valve main body and a sealing cover;

The sealing cover is connected with the inner wall of the shell of the valve main body, a moving cavity is formed in the sealing cover, and the first magnetic piece and the moving piece of the signal feedback device are positioned in the moving cavity and can move relative to the sealing cover.

In the above technical solution, further, the sealing cover includes a first sealing portion and a second sealing portion that are connected, and the movement cavity includes a first cavity and a second cavity that are communicated;

The first sealing part is positioned in the shell of the valve main body and is connected with the inner wall of the shell, the first sealing part forms the first cavity, and the main body part of the moving part is positioned in the first cavity;

the shell is provided with a through hole, the second sealing part penetrates out of the through hole, and the rod part of the moving part and the first magnetic part are positioned in the second cavity.

Compared with the prior art, the application has the beneficial effects that:

the signal feedback device provided by the application is used for a valve and comprises a first magnetic piece, a second magnetic piece and a signal element; the first magnetic piece is positioned in the valve and connected with the moving piece of the valve so as to change the distance between the first magnetic piece and the second magnetic piece to generate magnetic force; the second magnetic part is positioned outside the valve and can touch the switch of the signal element or disconnect the switch under the action of magnetic force.

Specifically, the signal feedback device comprises a first magnetic part, a second magnetic part and a signal element, wherein the first magnetic part is positioned in the valve, the second magnetic part is positioned outside the valve, and the first magnetic part and the second magnetic part are not in direct contact so as to prevent medium in the valve from leaking. The first magnetic piece is connected with the moving piece of the valve, so that the first magnetic piece is driven to move, and the first magnetic piece is close to or far from the second magnetic piece. When the first magnetic piece and the second magnetic piece are at a preset distance, magnetic force is generated between the first magnetic piece and the second magnetic piece so as to apply force to the second magnetic piece. Alternatively, the magnetic force may be an attractive force or a repulsive force. The second magnetic element triggers the switch of the signal element under the action of attractive force or repulsive force so that the signal element can send out a feedback signal.

It should be noted that, the second magnetic element touches the switch or is disconnected from the switch, so that the switch state of the signal element is changed, and the signal element sends a feedback signal. The second magnetic element may therefore be either transferred from the disconnected state to the activated state or from the activated state to the disconnected state.

According to the signal feedback device provided by the application, the first magnetic part is arranged in the valve, the second magnetic part is arranged outside the valve, the first magnetic part and the second magnetic part are not contacted with each other, and the on-off state of the signal element is changed through magnetic force, so that the working medium in the valve has no hidden trouble of leakage.

The application also provides a valve, which comprises the signal feedback device. Based on the above analysis, the valve has the same advantages as described above, and will not be described in detail herein.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a first structure of a signal feedback device according to the present application;

FIG. 2 is a schematic diagram of a second structure of the signal feedback device according to the present application;

fig. 3 is a schematic diagram of a third structure of the signal feedback device provided by the present application.

In the figure: 101-a first magnetic member; 102-a second magnetic member; 103-signal elements; 104-a valve; 105-moving member; 106-a switch; 107-supporting seats; 108-a limit groove; 109-a first magnet; 110-a protective housing; 111-a second magnet; 112-contacts; 113-a buffer; 114-a first through hole; 115-protective cap; 116-a second through hole; 117-a valve body; 118-a sealed enclosure; 119-a housing; 120-a first seal; 121-a second seal; 122-a first cavity; 123-a second cavity; 124-through holes.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Example 1

Referring to fig. 1 to 3, the signal feedback device provided by the present application is used for a valve 104, and includes a first magnetic member 101, a second magnetic member 102 and a signal element 103; the first magnetic element 101 is located in the valve 104, and the first magnetic element 101 is connected with the moving element 105 of the valve 104 to change the distance between the first magnetic element 101 and the second magnetic element 102 to generate magnetic force; the second magnetic member 102 is located outside the valve 104, and the second magnetic member 102 can trigger the switch 106 of the signal element 103 or disconnect from the switch 106 under the action of magnetic force.

Specifically, the signal feedback device includes a first magnetic element 101, a second magnetic element 102, and a signal element 103, where the first magnetic element 101 is located inside the valve 104, the second magnetic element 102 is located outside the valve 104, and the first magnetic element 101 and the second magnetic element 102 are not in direct contact to prevent leakage of medium inside the valve 104. The first magnetic member 101 is connected with the moving member 105 of the valve 104, so as to drive the first magnetic member 101 to move, so that the first magnetic member 101 is close to or far from the second magnetic member 102. When the first magnetic member 101 and the second magnetic member 102 are at a predetermined distance, a magnetic force is generated between the first magnetic member 101 and the second magnetic member 102 to apply a force to the second magnetic member 102. Alternatively, the magnetic force may be an attractive force or a repulsive force. The second magnetic member 102 triggers the switch 106 of the signal element 103 under the action of attractive or repulsive force, so that the signal element 103 can send out a feedback signal.

It should be noted that, when the second magnetic member 102 touches the switch 106 or is disconnected from the switch 106, the state of the switch 106 of the signal element 103 is changed, so that the signal element 103 sends a feedback signal. Therefore, the second magnetic member 102 and the switch 106 may be changed from the disconnected state to the activated state, or from the activated state to the disconnected state.

According to the signal feedback device provided by the application, the first magnetic part 101 is arranged in the valve 104, the second magnetic part 102 is arranged outside the valve 104, the first magnetic part 101 and the second magnetic part 102 are not contacted with each other, and the state of the switch 106 of the signal element 103 is changed through magnetic force, so that the working medium in the valve 104 has no hidden trouble of leakage.

In an alternative of this embodiment, the signal feedback device further comprises a support seat 107; the supporting seat 107 is connected with the valve 104, the supporting seat 107 is provided with a limiting groove 108, the second magnetic piece 102 is positioned in the limiting groove 108, and the limiting groove 108 is used for limiting the movement direction of the second magnetic piece 102; the signal element 103 is connected with one end of the supporting seat 107 far away from the valve 104, and the signal element 103 is installed at the notch of the limiting groove 108.

In this embodiment, in order to enable the second magnetic member 102 to move according to a preset track under the action of magnetic force, so as to ensure that the state of the switch 106 can be effectively changed, a limit slot 108 is formed in the support seat 107 to accommodate the second magnetic member 102, and the second magnetic member 102 can move along the depth direction of the limit slot 108 under the action of magnetic force, so that the switch 106 of the signal element 103 installed at the notch of the limit slot 108 can be reliably touched. The support seat 107 also plays a protective role for the second magnetic member 102.

In order to reduce the distance between the first magnetic member 101 and the second magnetic member 102 to ensure that a sufficient magnetic force is generated between the two, the signal element 103 is disposed at the end of the support seat 107 away from the valve 104, i.e. the second magnetic member 102 is disposed between the first magnetic member 101 and the signal element 103.

In an alternative scheme of the embodiment, the first magnetic piece 101 comprises a first magnet 109 and a protective shell 110, and the protective shell 110 is covered outside the first magnet 109; the second magnetic member 102 includes a second magnet 111 and a contact 112, the contact 112 is connected to an end of the second magnet 111 near the signal element 103, and the contact 112 is used for touching the signal element 103.

In this embodiment, in order to prevent the first magnet 109 and the second magnet 111 from being damaged during the movement, the protective housing 110 is disposed outside the first magnet 109, and the contact 112 is disposed at the end of the second magnet 111 near the signal element 103, thereby protecting the first magnet 109 and the second magnet 111.

Optionally, the first magnet 109 and the second magnet 111 are permanent magnets.

Example two

The signal feedback device in the second embodiment is an improvement on the basis of the above embodiment, and the technical content disclosed in the above embodiment is not repeated, and the content disclosed in the above embodiment also belongs to the content disclosed in the second embodiment.

Referring to fig. 2, in an alternative of this embodiment, the signal feedback device further includes a buffer member 113; the buffer member 113 is connected to the support base 107, and the signal element 103 is located between the buffer member 113 and the support base 107.

In this embodiment, the second magnetic member 102 has a movement tendency toward the signal element 103 or away from the signal element 103 under the action of magnetic force, so that the signal element 103 is easily vibrated. The buffer member 113 is connected to the support seat 107, and the signal element 103 is clamped between the buffer member and the support seat, so that vibration is buffered.

In an alternative solution of this embodiment, the buffer member 113 is provided with a first through hole 114, and the connecting line of the signal element 103 can pass through the first through hole 114, so as to realize the electrical connection between the signal element 103 and an external device.

In an alternative solution of this embodiment, the material of the buffer member 113 is an insulating material, so as to prevent the signal element 103 from generating an electric leakage phenomenon, and enhance the protection effect. Alternatively, the material of the buffer member 113 is polytetrafluoroethylene material, which has insulation and buffering effects.

In an alternative to this embodiment, the signal feedback device further comprises a protective cap 115; the protective cap 115 is connected with the supporting seat 107, and the protective cap 115 covers the buffer piece 113; the second through hole 116 is formed in the protective cap 115, and the connecting wire of the signal element 103 can pass through the second through hole 116.

In this embodiment, since the buffer member 113 is mostly made of soft materials, in order to prevent the buffer member 113 from being damaged, a protective cap 115 is further covered outside the buffer member 113, and a second through hole 116 is formed in the protective cap 115, the second through hole 116 is disposed corresponding to the first through hole 114, and the connection line of the signal element 103 can pass through the first through hole 114, so that the signal element 103 is electrically connected to an external device. Optionally, the protective cap 115 is made of copper material, and the outer surface is knurled, so that the protective cap is convenient to disassemble and assemble.

Example III

The third embodiment of the present application provides a valve, which includes the signal feedback device of any one of the above embodiments, so that the valve has all the beneficial technical effects of the signal feedback device of any one of the above embodiments, and will not be described herein.

Referring to fig. 3, in an alternative to this embodiment, the valve 104 includes a valve body 117 and a sealing cap 118; the sealing cap 118 is connected to an inner wall of a housing 119 of the valve body 117, the sealing cap 118 being formed with a moving chamber in which the first magnetic member 101 and the moving member 105 of the signal feedback device are located and movable with respect to the sealing cap 118.

In this embodiment, the sealing cover 118 is a pressure-bearing shell of the valve 104, and is capable of preventing the working medium from leaking out, and the sealing cover 118 is formed with a movement cavity, so that the moving member 105 can move in the movement cavity. When the valve 104 works, the moving part 105 moves upwards, the first magnetic part 101 moves upwards along with the moving part 105 and acts with the second magnetic part 102, and the second magnetic part 102 moves upwards under the action of the first magnetic part 101 due to the repulsion of the polarities, so as to trigger the switch 106 of the signal element 103 and output a feedback signal.

In an alternative to this embodiment, the sealing cap 118 includes a first sealing portion 120 and a second sealing portion 121 that are connected, alternatively, the first sealing portion 120 and the second sealing portion 121 may be welded or integrally formed; the movement cavity comprises a first cavity 122 and a second cavity 123 which are communicated; the first sealing part 120 is positioned in the shell 119 of the valve main body 117 and is connected with the inner wall of the shell 119, the first sealing part 120 forms a first cavity 122, and the main body part of the moving part 105 is positioned in the first cavity 122; the housing 119 is formed with a through hole 124, and the second sealing portion 121 passes through the through hole 124, and the rod portion of the moving member 105 and the first magnetic member 101 are located in the second cavity 123.

In this embodiment, the first sealing portion 120 provides a movement space for the main body of the moving member 105, and the second sealing portion 121 provides a movement space for the stem of the moving member 105, so that when the moving member 105 is not in place (the valve 104 is abnormally operated), the pushing force of the first magnetic member 101 is insufficient to push the second magnetic member 102 to trigger the signal element 103, and thus, malfunction during signal feedback can be effectively prevented. The first sealing portion 120 protrudes from the through hole 124 of the valve 104, which occupies less space and can also make the distance between the first magnetic member 101 and the second magnetic member 102 closer.

When the signal feedback device is provided with the supporting seat 107, the second sealing portion 121 is connected with the supporting seat 107, preferably, the supporting seat 107 is provided with a containing groove, so that the second sealing portion 121 is located in the containing groove, and further plays a role in protection.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application. Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments.

Claims

1. A signal feedback device for a valve, the signal feedback device comprising a first magnetic member, a second magnetic member, and a signal element;

The second magnetic part is positioned outside the valve and can touch the switch of the signal element or disconnect the switch under the action of the magnetic force;

The device also comprises a supporting seat;

The signal element is connected with one end of the supporting seat far away from the valve, and is arranged at the notch of the limiting groove;

the first magnetic piece comprises a first magnet and a protective shell, and the protective shell is covered outside the first magnet;

2. The signal feedback device of claim 1, further comprising a buffer;

3. The signal feedback device of claim 2, wherein the buffer member is provided with a first through hole, and the connecting line of the signal element can pass through the first through hole.

4. The signal feedback device of claim 2, wherein the material of the buffer is an insulating material.

5. The signal feedback device of claim 2, further comprising a protective cap;

6. A valve comprising a signal feedback device as claimed in any one of claims 1 to 5.

7. The valve of claim 6, comprising a valve body and a sealing cap;

8. The valve of claim 7, wherein the seal housing comprises a first seal and a second seal connected, the motion chamber comprising a first chamber and a second chamber in communication;