CN217927418U - Pulse electromagnetic valve - Google Patents

Abstract

The application relates to the technical field of pulse electromagnetic valves, in particular to a pulse electromagnetic valve. The pulse electromagnetic valve comprises a valve body, a coil, a membrane and a magnetic part; the pulse electromagnetic valve further comprises a first attraction piece and a second attraction piece, the first attraction piece is installed on the membrane and is used for attracting with the magnetic piece when the magnetic piece closes the valve port, the second attraction piece is arranged in the valve cavity and is arranged at an interval with the first attraction piece and is used for attracting with the magnetic piece when the magnetic piece opens the valve port, and the magnetic piece is arranged as a permanent magnet. The utility model has the advantages that: through setting up the magnetic part into the permanent magnet, because permanent magnet self has the speciality that can keep magnetism for a long time, consequently after the coil loses the electricity, the magnetic part still can adsorb mutually with first actuation spare or second actuation spare, need not the magnetizer and increases the electromagnetic force, and pulse solenoid valve still can normal ooff valve to energy cost and material cost have been practiced thrift.

Description

Pulse electromagnetic valve

Technical Field

The application relates to the technical field of pulse electromagnetic valves, in particular to a pulse electromagnetic valve.

Background

The pulse electromagnetic valve uses the energizing coil to excite and generate electromagnetic force to drive the valve core to move so as to open or close the valve and change the flowing direction of the fluid.

In the existing pulse electromagnetic valve, the continuous energization of the coil is usually required to realize the on-off valve of the pulse electromagnetic valve, which generates great waste of energy.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a pulse solenoid valve that can save energy.

A pulse electromagnetic valve comprises a valve body, a coil, a diaphragm and a magnetic part, wherein the valve body is internally provided with a valve cavity, the coil is wound outside the valve body, the diaphragm is arranged in the valve cavity and provided with a valve port, the magnetic part is arranged in the valve cavity, and the magnetic part can be close to or far away from the diaphragm in the valve cavity under the control of the coil so as to open/close the valve port; the pulse electromagnetic valve further comprises a first attraction piece and a second attraction piece, wherein the first attraction piece is installed on the membrane, is used for closing the valve port of the magnetic piece and magnetically attracts the magnetic piece, the second attraction piece is arranged in the valve cavity and is arranged at intervals with the first attraction piece, is used for opening the magnetic piece and magnetically attracts the magnetic piece, and the magnetic piece is arranged as a permanent magnet.

It can be understood that this application is through inciting somebody to action the magnetism spare sets up to the permanent magnet, because permanent magnet self has the peculiarity that can keep magnetism for a long time, consequently after the coil loses the electricity, the magnetism spare still can with first actuation spare or second actuation spare adsorbs mutually, need not the magnetizer and increases the electromagnetic force, pulse solenoid valve still can normal ooff valve to energy cost and material cost have been practiced thrift.

In one embodiment, the first suction member and the second suction member are soft magnets.

It can be understood that, by making the first attraction part and the second attraction part both soft magnetic, the first attraction part and the second attraction part do not need to be attracted with the magnetic part under the control of the coil, and further energy conservation is realized.

In one embodiment, the first and second engaging members are iron pieces.

It can be understood that the cost is further reduced by making the first and second suction members iron pieces.

In one embodiment, the diaphragm is provided with a closed first accommodating cavity, and the first absorbing element is accommodated in the first accommodating cavity; one end of the valve body, which is far away from the valve port, is provided with a closed second accommodating cavity, the second suction piece is accommodated in the second accommodating cavity, and the magnetic piece is positioned between the first accommodating cavity and the second accommodating cavity.

It can be understood that the first suction element and the second suction element are protected from corrosion of moisture in the air and abrasion due to impact of the magnetic element by respectively accommodating the first suction element and the second suction element in the closed first accommodating cavity and the closed second accommodating cavity.

In one embodiment, the pulse solenoid valve further comprises a protective shell, wherein a closed inner cavity is formed in the protective shell, and the magnetic element is arranged in the inner cavity.

It can be understood that, through will the magnetic part is located in the protective housing the inner chamber, thereby will the magnetic part is isolated with outside air, has avoided on the one hand the magnetic part receives the corruption of outside air and moisture, and on the other hand has also avoided the magnetic part is in cut with other parts production in the motion process in the valve body and rub and cause wearing and tearing, and then has prolonged the life of magnetic part.

In one embodiment, the protective casing includes a casing and a cover detachably connected to the casing to enclose the inner cavity.

It will be appreciated that by having the cover removably attached to the housing, the magnetic member is easily installed and removed, facilitating subsequent maintenance and replacement.

In one embodiment, the protective shell is a plastic shell.

In one embodiment, the outer side wall of the protective shell and the inner side wall of the valve body are mutually attached.

It can be understood that, by making the outer side wall of the protective shell and the cavity wall of the valve cavity mutually fit, the movement of the magnetic member in the valve cavity is guided, and the magnetic member is prevented from being skewed to affect the sealing performance of the pulse electromagnetic valve when the valve is closed.

In one embodiment, a valve needle is arranged at one end of the housing close to the diaphragm, and the valve needle at least partially extends into the valve port along with the movement of the magnetic part towards the diaphragm so as to seal the valve port.

In one embodiment, the valve body further has a first through hole and a second through hole, and the magnetic member can be disengaged from/abutted against the valve port to realize the on/off between the first through hole and the second through hole.

Compared with the prior art, this application is through inciting somebody to action the magnetism spare sets up to the permanent magnet, because permanent magnet self has the speciality that can keep magnetism for a long time, consequently the coil loses the electricity after, the magnetism spare still can with first actuation spare or second actuation spare adsorbs mutually, need not the magnetizer and increases the electromagnetic force, pulse solenoid valve still can normal ooff valve to energy cost and material cost have been practiced thrift.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a pulse solenoid valve provided in the present application;

fig. 2 is a schematic view of an assembly structure of a protective shell and a magnetic member provided by the present application.

Reference numerals: 100. a pulse electromagnetic valve; 10. a valve body; 11. a valve cavity; 12. a first circulation port; 13. a second flow port; 20. a coil; 30. a membrane; 31. a valve port; 40. a magnetic member; 41. a protective shell; 411. an inner cavity; 412. a housing; 4121. a valve needle; 413. a cover body; 50. a first absorbing member; 51. a first accommodating cavity; 60. a second engaging member; 61. a second accommodating cavity.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

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 intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

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 at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of this application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, the present application provides a pulse solenoid valve 100, wherein the pulse solenoid valve 100 is generally excited by an energizing coil 20 to generate an electromagnetic force, so as to drive a valve plug to move, so as to open or close a valve port 31 and change a flow direction of a fluid.

In the existing pulse electromagnetic valve, the continuous energization of the coil is usually required to realize the on-off valve of the pulse electromagnetic valve, and great waste is generated on energy.

In order to solve the problems of the existing pulse electromagnetic valve, the utility model provides a pulse electromagnetic valve 100, this pulse electromagnetic valve 100 includes valve body 10, coil 20, diaphragm 30 and magnetic part 40, valve chamber 11 has in the valve body 10, coil 20 is around locating outside the valve body 10, diaphragm 30 is installed in valve chamber 11 and has been seted up valve port 31 on the diaphragm 30, magnetic part 40 locates in valve chamber 11, magnetic part 40 can be close to or keep away from diaphragm 30 in valve chamber 11 under the control of coil 20 to open/close valve port 31; the pulse solenoid valve 100 further includes a first attraction member 50 and a second attraction member 60, the first attraction member 50 is mounted on the diaphragm 30 and magnetically attracted to the magnetic member 40 when the magnetic member 40 closes the valve port 31, the second attraction member 60 is disposed in the valve chamber 11 and spaced apart from the first attraction member 50 and magnetically attracted to the magnetic member 40 when the magnetic member 40 opens the valve port 31, wherein the magnetic member 40 is configured as a permanent magnet.

It should be noted that, in the existing pulse electromagnetic valve, the movable valve core in the valve cavity is usually a soft magnet, which has the characteristics of being easily magnetized and demagnetized, and when the coil is energized, the soft magnet is magnetized to generate magnetism, so as to move in the valve cavity to realize the on-off valve of the pulse electromagnetic valve; however, when the coil is powered off, the soft magnet can immediately lose magnetism and restore to the original position. That is, in order to maintain the open or closed state of the pulse solenoid valve, the conventional pulse solenoid valve must maintain the coil in the energized state, which inevitably results in a large waste of energy. Based on this problem, in the pulse solenoid valve 100 provided in the present application, the magnetic member 40 moving in the valve chamber 11 is set as a permanent magnet, and the permanent magnet is a strong magnetic material, and is a magnet capable of maintaining its magnetism for a long time, that is, is not easy to demagnetize.

Based on the characteristic that the permanent magnet is not easy to demagnetize, in the application, when the coil 20 is powered on in the forward direction, the magnetic member 40 set as the permanent magnet moves in the valve cavity 11 in the direction away from the diaphragm 30, the valve port 31 is opened, at this time, the magnetic member 40 is attracted with the second attraction member 60, after the coil 20 is powered off, the magnetic member 40 still has magnetism due to the self characteristic, and can still keep the attraction state with the second attraction member 60, so that the stable opening of the pulse electromagnetic valve 100 is realized, and the coil 20 does not need to be always kept in the power-on state, so that the energy is saved; when the coil 20 is energized reversely, the magnetic member 40 configured as a permanent magnet moves in the valve cavity 11 toward the direction close to the diaphragm 30, the valve port 31 is closed, and at this time, the magnetic member 40 attracts the first attracting member 50, and when the coil 20 is de-energized, the magnetic member 40 still has magnetism due to its own characteristics, and still can maintain the attracting state with the first attracting member 50, so that the steady-state valve closing of the pulse electromagnetic valve 100 is realized, and the coil 20 does not need to maintain the energized state all the time, thereby saving energy. In addition, the permanent magnet is used for replacing the soft magnet, so that the material cost is greatly reduced.

Further, the first and second suction elements 50 and 60 are soft magnetic materials.

It should be noted that, the first engaging element 50 and the second engaging element 60 are made of soft magnetic material, so that the first engaging element 50 and the second engaging element 60 can generate magnetic attraction with the magnetic element 40 under the residual magnetism of the magnetic element 40, and the coil 20 does not need to be electrified to conduct magnetism, thereby saving energy.

It should be noted that, in the present application, the forward and reverse energization of the coil 20 only needs to provide a force to the magnetic member 40 to move close to the first engaging member 50 or close to the second engaging member 60, and during the movement of the magnetic member 40 close to the first engaging member 50 or close to the second engaging member 60, due to the proximity of the distance to the first engaging member 50 or the second engaging member 60, the magnetic field generated by the magnetic member 40 can cause the first engaging member 50 or the second engaging member 60 to generate a magnetic attraction to the magnetic member 40, and this magnetic attraction does not need to be provided by energizing the coil 20.

In addition, because a spring is connected between the movable iron core and the static iron core in the existing pulse electromagnetic valve, when the coil is electrified, the movable iron core moves towards the static iron core and compresses the spring, and the valve port is opened; after the coil is powered off, the movable iron core is pushed by the elastic restoring force of the spring to move towards the direction far away from the static iron core until the valve port is blocked, and the valve port is closed. In the present application, the spring is eliminated, and the magnetic attraction between the magnetic member 40 and the first suction member 50 is directly utilized to maintain the sealing at the valve port 31, thereby simplifying the structure.

Preferably, the first and second suction members 50 and 60 are iron pieces. Among the present pulse solenoid valve, the movable valve core that sets up to soft magnetism body is stainless steel material usually, and stainless steel is comparatively expensive for the iron sheet, and this application adopts the iron sheet with first piece 50 and the second piece 60 of inhaling to material cost has been reduced.

Further, the diaphragm 30 has a closed first accommodating cavity 51, and the first absorbing element 50 is accommodated in the first accommodating cavity 51; the valve body 10 has a closed second receiving cavity 61 at an end away from the valve port 31, the second engaging member 60 is received in the second receiving cavity 61, and the magnetic member 40 is located between the first receiving cavity 51 and the second receiving cavity 61.

It should be noted that, since the first suction element 50 and the second suction element 60, which are configured as iron sheets, are easily corroded by moisture in the air and rusted, the first suction element 50 and the second suction element 60 need to be isolated from the air, that is, the first suction element 50 and the second suction element 60 are respectively accommodated in the first accommodating cavity 51 and the second accommodating cavity 61 which are closed. The first and second suction elements 50 and 60 are respectively accommodated in the closed first and second accommodation cavities 51 and 61, so that the first and second suction elements 50 and 60 can be prevented from being corroded by moisture in the air, the magnetic element 40 can be prevented from directly colliding with the first and second suction elements 50 and 60, abrasion is caused, and the service lives of the first and second suction elements 50 and 60 are shortened.

Similarly, the magnetic member 40 needs to be protected from corrosion or abrasion. As shown in fig. 2, the pulse solenoid valve 100 further includes a protective casing 41, a closed inner cavity 411 is formed in the protective casing 41, and the magnetic member 40 is disposed in the inner cavity 411. The protective shell 41 encloses the magnetic element 40 in the inner cavity 411, which also aims to prevent the magnetic element 40 from being corroded by moisture in the air and prevent the magnetic element 40 from being abraded between the magnetic element 40 and the cavity wall of the valve cavity 11 during the movement process in the valve cavity 11, thereby prolonging the service life of the magnetic element 40.

Specifically, the protective casing 41 includes a casing 412 and a cover 413, and the cover 413 is detachably connected to the casing 412 to close the inner cavity 411. By detachably attaching the cover 413 to the housing 412, the magnetic member 40 can be easily attached and detached, and the subsequent maintenance and replacement can be facilitated.

In this embodiment, the protective case 41 is made of plastic; of course, in other embodiments, the protective casing 41 may be made of other materials such as rubber, and is not limited herein.

Further, the outer side wall of the protective shell 41 and the inner side wall of the valve body 10 are attached to each other. The movement of the magnetic member 40 in the valve cavity 11 is guided in this way, so that the magnetic member 40 is prevented from being skewed to affect the sealing performance of the pulse solenoid valve 100 when the valve is closed.

In order to ensure that the outer side wall of the protective shell 41 and the inner side wall of the valve body 10 are attached to each other, in the present embodiment, the protective shell 41 is configured to be cylindrical and adapted to the shape of the valve body 10; of course, in other embodiments, the protective case 41 may be provided in other shapes such as a rectangular parallelepiped shape, and is not limited herein.

Further, the housing 412 is provided with a valve needle 4121 at an end thereof close to the diaphragm 30, and the valve needle 4121 at least partially extends into the valve port 31 as the magnetic member 40 moves toward the diaphragm 30 to close off the valve port 31.

In the present embodiment, the valve needle 4121 is provided in a conical shape, which enables the flow rate to be adjusted to some extent during the process in which the valve needle 4121 protrudes into the valve port 31. For ease of manufacture, the valve needle 4121 is provided as one piece with the housing 412.

As shown in fig. 1, the valve body 10 further includes a first communication port 12 and a second communication port 13, and when the valve needle 4121 extends into the valve port 31 to close the valve port 31, the first communication port 12 and the second communication port 13 are blocked; when the valve needle 4121 disengages from the valve port 31 to open the valve port 31, the first communication port 12 and the second communication port 13 communicate with each other, thereby realizing the on-off valve of the pulse solenoid valve 100.

The utility model provides a pulse solenoid valve 100 through setting up magnetic part 40 into the permanent magnet, because permanent magnet self has the speciality that can keep magnetism for a long time, consequently after coil 20 loses the electricity, magnetic part 40 still can inhale with first piece 50 or second piece 60 mutually, need not the magnetizer and increases the electromagnetic force, pulse solenoid valve 100 still can normal ooff valve to energy cost and material cost have been practiced thrift.

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 express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A pulse electromagnetic valve comprises a valve body (10), a coil (20), a diaphragm (30) and a magnetic part (40), wherein a valve cavity (11) is formed in the valve body (10), the coil (20) is wound outside the valve body (10), the diaphragm (30) is installed in the valve cavity (11), a valve port (31) is formed in the diaphragm (30), the magnetic part (40) is arranged in the valve cavity (11), and the magnetic part (40) can be close to or far away from the diaphragm (30) in the valve cavity (11) under the control of the coil (20) so as to open/close the valve port (31);

the pulse electromagnetic valve is characterized by further comprising a first attraction piece (50) and a second attraction piece (60), wherein the first attraction piece (50) is installed on the diaphragm (30) and is used for being magnetically attracted with the magnetic piece (40) when the valve port (31) is closed by the magnetic piece (40), the second attraction piece (60) is arranged in the valve cavity (11) and is arranged at an interval with the first attraction piece (50) and is used for being magnetically attracted with the magnetic piece (40) when the valve port (31) is opened by the magnetic piece (40), and the magnetic piece (40) is arranged as a permanent magnet.

2. The pulsed solenoid valve according to claim 1, wherein the first engaging member (50) and the second engaging member (60) are soft magnetic bodies.

3. A pulsed solenoid valve according to claim 2, wherein the first and second absorbing members (50, 60) are iron pieces.

4. A pulse solenoid valve according to claim 1, wherein said diaphragm (30) has a closed first housing chamber (51) therein, said first suction member (50) being housed in said first housing chamber (51);

one end, far away from the valve port (31), of the valve body (10) is provided with a closed second accommodating cavity (61), the second attraction piece (60) is accommodated in the second accommodating cavity (61), and the magnetic piece (40) is located between the first accommodating cavity (51) and the second accommodating cavity (61).

5. A pulsed solenoid valve according to claim 1, further comprising a protective housing (41), said protective housing (41) having an enclosed interior chamber (411) therein, said magnetic member (40) being disposed in said interior chamber (411).

6. The pulse solenoid valve according to claim 5, characterized in that said protective casing (41) comprises a casing (412) and a cover (413), said cover (413) being removably connected to said casing (412) to close said internal chamber (411).

7. A pulse solenoid valve according to claim 5, characterised in that said protective housing (41) is a plastic housing.

8. A pulse solenoid valve according to claim 5, characterized in that the outer side wall of said protective casing (41) and the inner side wall of said valve body (10) are mutually conformed.

9. The pulsed solenoid valve according to claim 6, wherein the housing (412) is provided with a valve needle (4121) at an end thereof adjacent to the diaphragm (30), the valve needle (4121) extending at least partially into the valve port (31) to close off the valve port (31) as the magnetic member (40) moves toward the diaphragm (30).

10. The pulsed solenoid valve according to claim 1, wherein the valve body (10) further has a first communication port (12) and a second communication port (13) therein, and the magnetic member (40) is capable of being disengaged from/abutted against the valve port (31) to enable on/off between the first communication port (12) and the second communication port (13).

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