CN210978689U - Movable iron core control device and control valve with same - Google Patents

Abstract

The utility model discloses a move iron core controlling means and have its control valve should move iron core controlling means and include: the permanent magnet piece can move to be close to or far away from the movable iron core, so that the position of the movable iron core is changed by magnetic force; the shell is arranged on the valve body and corresponds to the position of the movable iron core, and a space for the permanent magnetic piece to move is formed in the shell; the pressing locking mechanism is in extrusion fit with the permanent magnetic piece; the permanent magnet pieces are moved and can be kept at the moved positions by applying non-continuous physical pressure to the pressing locking mechanism. The permanent magnetic piece is used for adsorbing the movable iron core, and the position of the permanent magnetic piece is changed by the pressing locking mechanism to control whether the movable iron core is adsorbed or not; and the position of the permanent magnetic piece can be kept without applying continuous physical pressure to the pressing locking mechanism, and the operation is convenient.

Description

Movable iron core control device and control valve with same

Technical Field

The utility model relates to a control valve field especially relates to a move iron core controlling means and have its control valve.

Background

The automatic control solenoid valve is useful in many fields, such as the application fields of intelligent sanitary wares, and the situation of unexpected power failure often can appear in the practical application environment, and the sanitary ware still needs to be washed in this situation, so the automatic control solenoid valve still needs to be supplied with power for control in a standby mode. The electric power supplement mode adopted by each manufacturer is a standby battery, and is limited by the energy of the battery, so that the power consumption of the product is required to be low, the electromagnetic air gap of a movable iron core of an original element in the product is small, dirt is attached to the iron core and a spring, the pressure change range is large and other factors cause that the electromagnetic force pushing force of a valve core (movable iron core) of the electromagnetic valve is insufficient, the moving stroke such as accumulated machining errors of a plurality of parts is too short, the electromagnetic valve rebounds and malfunctions and other states, and the normal use of the; a manual control function is added on part of products, and when the electric control function is inconvenient to use, the valve body can be normally used by manually controlling the closing/opening of the movable iron core; however, the manual control structure of the existing control valve is not good enough, the direct connection of the mechanism to the medium often has the problems of unreliable sealing, overlarge operating force, incapability of self-locking, inconvenience in use and the like, for example, the movable iron core can be kept in an open state by frequently pressing a switch. In addition, the structure of the existing control valve with electric and manual control functions is not perfect.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to at least solve one of the problems of the prior manual control structure of the control valve that the use is inconvenient or the structure of the control valve itself is not good to a certain extent; for this purpose, a movable iron core control device is proposed on the one hand, and a control valve with the movable iron core control device is proposed on the other hand.

The utility model discloses the technical scheme of an aspect is so realized:

a moving core control device comprising:

the permanent magnet piece can move to be close to or far away from the movable iron core, so that the position of the movable iron core is changed by magnetic force;

the shell is arranged on the valve body and corresponds to the position of the movable iron core, and a space for the permanent magnetic piece to move is formed in the shell;

the pressing locking mechanism is in extrusion fit with the permanent magnetic piece; the permanent magnet pieces are moved and can be kept at the moved positions by applying non-continuous physical pressure to the pressing locking mechanism.

As a further alternative of the movable iron core control device, the pressing locking mechanism comprises a first elastic piece, a rotating piece, a positioning piece and a push rod, wherein the first elastic piece and the permanent magnetic piece are coaxially arranged; the first elastic piece is arranged at one end of the permanent magnetic piece to apply a force far away from the movable iron core to the permanent magnetic piece; the rotating piece, the positioning piece and the push rod are arranged at the other end of the permanent magnetic piece, the positioning piece is a ring-shaped body and is fixed in the shell, one end, facing the permanent magnetic piece, of the positioning piece is provided with first ratchets which are arranged circumferentially, a first guide rail and a second guide rail are arranged on the inner wall of the positioning piece at intervals and are sunken in positions corresponding to the first ratchets, and the sunken depths of the first guide rail and the second guide rail are different; the rotating piece is provided with a plurality of second ratchets which are arranged at intervals along the periphery and matched with the first ratchets; one end of the push rod is provided with annular concave teeth matched with the second ratchet teeth, the circle diameter of the annular concave teeth is smaller than that of the inner wall of the positioning piece, convex blocks which are equidistantly spaced are arranged on the outer side of the push rod along the circumferential direction, and the convex blocks are clamped with the first guide rail or the second guide rail, so that the push rod cannot be separated from the positioning piece; the second ratchet may be inserted into the first guide rail but not into the second guide rail, enabling the rotation member to move and may be held at a moved position.

As a further alternative of the moving iron core control device, an outer sleeve is arranged outside the permanent magnetic piece, a channel for embedding the permanent magnetic piece is arranged in the outer sleeve, the outer sleeve abuts against the first elastic piece, the permanent magnetic piece is connected with the rotating piece through a second elastic piece, and the second elastic piece applies a force for embedding the permanent magnetic piece into the outer sleeve.

As a further alternative of the movable iron core control device, an urging member is arranged in the housing, and the urging member abuts against the first elastic member.

As a further alternative of the movable iron core control device, a pressing piece is arranged on the push rod.

The movable iron core control device has the beneficial effects that: the permanent magnetic piece is used for adsorbing the movable iron core, and the position of the permanent magnetic piece is changed by the pressing locking mechanism to control whether the movable iron core is adsorbed or not; the position of the permanent magnetic piece can be kept without applying continuous physical pressure to the pressing locking mechanism, and the operation is convenient; in addition, the movable iron core control device can be arranged outside a valve body of the control valve, and the situations of corrosion, rusting and the like caused by the influence of media in the valve body are avoided.

The utility model discloses on the other hand's technical scheme is realized like this:

a control valve comprises the movable iron core control device.

As a further alternative of the control valve, the control valve comprises a valve body, a first chamber and a second chamber are arranged in the valve body, the first chamber and the second chamber are isolated by a diaphragm assembly, the first chamber is annular, a medium outlet is arranged in the first chamber, a partition plate is arranged between the first chamber and the medium outlet, and a gap is formed between the partition plate and the diaphragm assembly; a bypass hole is formed in the membrane assembly, and the first chamber is communicated with the second chamber through the bypass hole; the first chamber is communicated with a medium inlet; the second chamber is communicated with the medium outlet through a pressure relief channel, an electric control movable iron core structure and a manual movable iron core structure are arranged on the pressure relief channel to control closing/opening, and the manual movable iron core structure is controlled by a movable iron core control device.

As a further alternative of the control valve, the electrically controlled movable core structure includes a first movable core and a third chamber, the third chamber is communicated with the pressure relief channel through a first pilot hole, and the first movable core can close/open the first pilot hole; the manual movable iron core structure comprises a second movable iron core and a fourth cavity, the fourth cavity is communicated with the pressure relief channel through a second pilot hole, and the second movable iron core can close/open the second pilot hole; the third chamber and the fourth chamber are communicated through a third pilot hole, and the second chamber is communicated with the third chamber or the fourth chamber through a fourth pilot hole.

As a further alternative of the control valve, the first movable iron core closes the first pilot hole through an elastic force provided by a third elastic member, and the first movable iron core opens the first pilot hole through an electronic control component; the second movable iron core closes the second pilot hole through the elastic force provided by the fourth elastic piece, and the second movable iron core opens the second pilot hole through the movable iron core control device.

As a further alternative of the control valve, the plunger control means may be removably secured outside the valve body.

The control valve has the advantages that: the movable iron core control device is used as a manual control structure of the control valve, so that the control valve is more convenient to use; in addition, the control valve has electric and manual control functions at the same time, and the internal structure is compact.

Drawings

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

Fig. 1 is a schematic structural diagram of a movable iron core control device of the present invention;

fig. 2 is an exploded schematic view of a movable iron core control device according to the present invention;

fig. 3 is a schematic sectional view of a movable iron core control device according to the present invention;

fig. 4 is a schematic structural view of the positioning element, the rotating element and the push rod of the present invention;

fig. 5 is a schematic structural diagram of a control valve according to the present invention;

fig. 6 is a top view of a control valve according to the present invention;

FIG. 7 is a cross-sectional view A-A of FIG. 6;

fig. 8 is a sectional view of B-B in fig. 6.

In the figure: 100. a movable iron core control device; 110. a permanent magnet member; 111. a second elastic member; 120. a housing; 130. a first elastic member; 140. a rotating member; 141. a second ratchet; 150. a positioning member; 151. a first ratchet; 152. a first guide rail; 153. a second guide rail; 160. a push rod; 161. an annular concave tooth; 162. a bump; 170. an outer casing; 180. a top tightening member; 190. a pressing member;

1. a valve body; 11. a first chamber; 12. a second chamber; 13. a partition plate; 14. a fourth pilot hole; 15. a third pilot hole; 2. a diaphragm assembly; 21. a bypass orifice; 3. a media outlet; 4. a media inlet; 5. a pressure relief channel; 61. a third chamber; 62. a first movable iron core; 63. a first pilot hole; 71. a fourth chamber; 72. a second movable iron core; 73. a second pilot hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "depth", "inner", "outer", "clockwise", "axial", "radial", "circumferential", 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 thus, should not be considered 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only 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.

Example one

Referring to fig. 1-4, there is shown a moving core control device comprising:

a permanent magnet 110, the permanent magnet 110 being movable toward or away from the movable core to change the position of the movable core with a magnetic force;

a housing 120 disposed on the valve body 1 at a position corresponding to the movable core, wherein the housing 120 has a space for the permanent magnet 110 to move;

the pressing locking mechanism is in extrusion fit with the permanent magnetic piece 110; by applying a non-continuous physical pressure to the press locking mechanism, the permanent magnet 110 is moved and can be held at the moved position.

In other words, the movable iron core is attracted by the permanent magnet 110, and the position of the permanent magnet 110 is changed by the pressing locking mechanism to control whether the movable iron core is attracted; moreover, the position of the permanent magnetic piece 110 can be kept without applying continuous physical pressure to the pressing locking mechanism, and the operation is convenient; in addition, the movable iron core control device can be arranged outside a valve body of the control valve, and the situations of corrosion, rusting and the like caused by the influence of media in the valve body are avoided.

In some specific embodiments, the pressing locking mechanism may refer to a telescopic locking structure in a ball-point pen, and refer to fig. 2 to 4, the pressing locking mechanism includes a first elastic member 130, a rotating member 140, a positioning member 150, and a push rod 160 coaxially disposed with the permanent magnet member 110; the first elastic member 130 is arranged at one end of the permanent magnet 110 to apply a force to the permanent magnet 110 away from the plunger; the rotating element 140, the positioning element 150 and the push rod 160 are disposed at the other end of the permanent magnet 110, the positioning element 150 is a ring-shaped body and is fixed in the housing 120, one end of the positioning element 150 facing the permanent magnet 110 is provided with first ratchet teeth 151 arranged circumferentially, a first guide rail 152 and a second guide rail 153 are recessed in the inner wall of the positioning element 150 at intervals corresponding to the first ratchet teeth 151, and the recessed depth of the first guide rail 152 is different from that of the second guide rail 153; the rotating member 140 is provided with a plurality of second ratchet teeth 141 which are arranged at intervals along the circumference and matched with the first ratchet teeth 151; one end of the push rod 160 abuts against the second ratchet 141, a projection 162 is circumferentially arranged on the outer side of the push rod 160 at equal intervals, and the projection 162 is engaged with the first guide rail 152 or the second guide rail 153, so that the push rod 160 cannot be separated from the positioning member 150; the second ratchet 141 may be inserted into the first guide rail 152 but not into the second guide rail 153, enabling the rotation member 140 to move and may be maintained in a moved position.

Specifically, the working principle of the pressing locking mechanism can refer to fig. 3 and 4, the first elastic body, the permanent magnetic member 110, the rotating member 140 and the positioning member 150 are disposed in the housing 120, and the push rod 160 is at least partially disposed in the housing 120; the first elastic member 130 is arranged at one end of the permanent magnet 110 to apply a force to the permanent magnet 110 away from the movable iron core, and the rotating member 140, the positioning member 150 and the push rod 160 are arranged at the other end of the permanent magnet to apply a force to the permanent magnet 110 close to the movable iron core; the push rod 160 is pushed to the rotating member 140 by pressing the push rod 160, at this time, the second ratchet 141 on the rotating member 140 is disengaged from the first ratchet 151 on the positioning member 150, and then the push rod 160 is released, the rotating member 140 is forced by the first elastic member 130, the second ratchet 141 on the rotating member 140 is inserted into the first ratchet 151 of the positioning member 150 again, in the process of inserting again, referring to fig. 4, the second ratchet 141 slides along the inclined tooth surface on the first ratchet 151 to rotate a tooth position, i.e. the rotating member 140 rotates one position on the positioning member 150 every time the push rod 160 is pressed and released; meanwhile, the first ratchet 151 is positioned corresponding to the first guide rail 152 and the second guide rail 153 which are spaced apart from each other, the first guide rail 152 and the second guide rail 153 are recessed from the inner wall of the positioning member 150, the recessed depth of the first guide rail 152 and the recessed depth of the second guide rail 153 are different, and the second ratchet 141 can be inserted into the first guide rail 152 but cannot be inserted into the second guide rail 153; the projection 162 of the push rod 160 moves along the first guide rail 152 and/or the second guide rail 153; when the second ratchet teeth 141 rotate on the first ratchet teeth 151, the second ratchet teeth 141 may be caught in the first guide rail 152 or caught on the first ratchet teeth 151 corresponding to the second guide rail 153, and both may circulate, so that the position of the rotating member 140 in the housing 120 may be locked, that is, the position of the permanent magnet member 110 may be fixed.

In addition, in order to protect the second ratchet 141, referring to fig. 4, an annular concave tooth 161 may be disposed at an end of the push rod 160 that abuts against the second ratchet 141, a circular diameter of the annular concave tooth 161 is smaller than a circular diameter of an inner wall of the positioning member 150, that is, the annular concave tooth 161 may pass through the positioning member 150, and the annular concave tooth 161 cooperates with the second ratchet 141 to prevent the second ratchet 141 from being easily worn to affect the rotation of the rotating member 140; it should be noted that the concave teeth of the annular concave teeth 161 are smooth, and the height of the teeth is not large, so as not to hinder the second ratchet 141 from rotating.

In some specific embodiments, since the permanent magnet 110 needs to collide with the first elastic body and the rotating member 140, in order to avoid severe wear of the permanent magnet 110, referring to fig. 2, an outer sleeve 170 is disposed outside the permanent magnet 110, a channel for the permanent magnet 110 to be embedded is disposed in the outer sleeve 170, the outer sleeve 170 abuts against the first elastic body 130, the permanent magnet 110 is connected to the rotating member 140 through a second elastic body 111, and the second elastic body 111 applies a force to the permanent magnet 110 to be embedded in the outer sleeve 170.

In other words, the outer sleeve member is in contact with the first elastic member and the rotating member 140, so as to prevent the permanent magnetic member 110 from directly contacting with the first elastic member 130 and the rotating member 140 and being worn; referring to fig. 4, the permanent magnet piece 110 is embedded in the outer casing 170, and for easy assembly and convenient replacement of the permanent magnet piece 110, the permanent magnet piece 110 is detachably fixed in the outer casing 170, that is, the permanent magnet piece 110 is pushed into the outer casing 170 by the second elastic piece 111; of course, in order to facilitate the fixing of the second elastic member 111, a mounting hole may be provided on the rotating member 140, one end of the second elastic member 111 is inserted into the mounting hole, and the other end abuts against the permanent magnet member 110, so that the permanent magnet member 110 cannot move in the channel inside the outer casing 170. The outer sleeve may be made of rubber, and one end of the outer sleeve near the movable iron core is provided with a through hole, the through hole is connected with a channel where the permanent magnet 110 is located, and the through hole may be used for pushing out the permanent magnet 110 during disassembly.

In some embodiments, in order to provide a suitable contact surface at one end of the first elastic member 130 for better applying force to the permanent magnetic member 110, referring to fig. 2 and 3, a top member 180 is disposed in the housing 120, the top member 180 abuts against the first elastic member 130, and the top member 180 provides a flat contact surface for the first elastic member 130, that is, the first elastic member 130 can make good contact with the contact surface for applying force to the permanent magnetic member 110.

In some specific embodiments, in order to better press the push button, referring to fig. 1, 2 or 3, a pressing member 190 is disposed on the push rod 160. The pressing member 190 has a large pressing surface to facilitate pressing, and the pressing member 190 may be made of a soft material, such as rubber, which is more comfortable when pressed by a human hand.

It should be noted that, although the non-continuous physical pressure may be applied to the pressing and locking mechanism by human power, or the non-continuous physical pressure may be applied to the pressing and locking mechanism by using an existing mechanical device, since the electrically controlled movable iron core of the existing control valve is energized, the magnetically attracted movable iron core is generated, but this method requires a continuous energization, which results in a large consumption of electric energy; when the electric control mode is realized by using the movable iron core control device, only intermittent electrification is needed, namely, the existing mechanical device is electrified to press the pressing locking mechanism, and then the power is cut off, so that the pressing locking mechanism is subjected to non-continuous physical pressure, and the movable iron core can be controlled. Therefore, the movable iron core control device can be used in an electric control mode and can also be used in a manual mode.

Example two

Referring to fig. 5-8, a control valve is shown that includes the plunger control apparatus 100 described above.

In some specific embodiments, the structure of the control valve can refer to fig. 5, fig. 7 and fig. 8, the control valve comprises a valve body 1, a first chamber 11 and a second chamber 12 are arranged in the valve body 1, the first chamber 11 and the second chamber 12 are separated by a diaphragm assembly 2, the first chamber 11 is annular, a medium outlet 3 is arranged in the first chamber 11, a partition plate 13 is arranged between the first chamber 11 and the medium outlet 3, and a gap is formed between the partition plate 13 and the diaphragm assembly 2; a bypass hole 21 is formed in the diaphragm assembly 2, and the first chamber 11 is communicated with the second chamber 12 through the bypass hole 21; the first chamber 11 is communicated with a medium inlet 4; the second chamber 12 is communicated with the medium outlet 3 through a pressure relief channel 5, an electric control movable iron core structure and a manual movable iron core structure are arranged on the pressure relief channel 5 to control closing/opening, and the manual movable iron core structure is controlled by the movable iron core control device 100.

The electric control movable iron core structure comprises a first movable iron core 62 and a third chamber 61, the third chamber 61 is communicated with the pressure relief channel 5 through a first pilot hole 63, and the first movable iron core 62 can close/open the first pilot hole 63; the manual moving core structure comprises a second moving core 72 and a fourth chamber 71, the fourth chamber 71 is communicated with the pressure relief channel 5 through a second pilot hole 73, and the second moving core 72 can close/open the second pilot hole 73; the third chamber 61 and the fourth chamber 71 communicate through a third pilot hole 15, and the second chamber 12 communicates with the third chamber 61 or the fourth chamber 71 through a fourth pilot hole 14. The first movable iron core 62 closes the first pilot hole 63 through the elastic force provided by the third elastic member, and the first movable iron core 62 opens the first pilot hole 63 through the electric control component; the second plunger 72 closes the second pilot hole 73 by the elastic force provided by the fourth elastic member, and the second plunger 72 opens the second pilot hole 73 by the plunger control means 100.

Specifically, referring to fig. 7 and 8, when the control valve is in a closed state, namely, the first plunger 62 blocks the first pilot hole 63, and the second plunger 72 blocks the second pilot hole 73; at this time, if the medium flows into the medium inlet 4, the medium will fill the first chamber 11 first, and then the medium enters the medium outlet 3 from the gap between the diaphragm assembly 2 and the medium outlet 3, and simultaneously the medium also enters the second chamber 12 from the bypass hole 21 on the diaphragm assembly 2, when the pressure in the second chamber 12 becomes higher and higher, the diaphragm assembly 2 will press towards the medium outlet 3, so that the gap between the diaphragm assembly 2 and the medium outlet 3 is closed, and the medium does not flow into the medium outlet 3 any more. During this process, the medium in the second chamber 12 flows from the fourth pilot hole 14 into the third chamber 61 or the fourth chamber 71, and since the third chamber 61 and the fourth chamber 71 are communicated through the third pilot hole 15, the medium flows into both the third chamber 61 and the fourth chamber 71; at this time, if the first movable iron core 62 is controlled to open the first pilot hole 63 or the second movable iron core 72 is controlled to open the second pilot hole 73, the media in the third chamber 61 and the fourth chamber 71 will flow into the pressure relief channel 5 and then enter the medium outlet 3, even if the medium in the second chamber 12 is discharged, the pressure can be relieved, the diaphragm assembly 2 is not pressed to the medium outlet 3, and the gap between the diaphragm assembly 2 and the medium outlet 3 is opened again.

Thus, the movable iron core control device 100 is used as a manual control structure of the control valve, so that the control valve is more convenient to use; in addition, the control valve has electric and manual control functions at the same time, and the internal structure is compact.

It should be noted that the first movable iron core 62 is controlled by an electronic control component, and the electronic control component may be an electronic control component of an existing control valve, so the specific structure of the electronic control component is not described in detail herein; in addition, for the specific structure and the working principle of the diaphragm assembly 2, reference may be made to a solenoid valve diaphragm assembly 2 disclosed in publication No. CN208024918U, which is not described herein again. The movable iron core control device 100 is detachably fixed outside the valve body 1, so that parts inside the movable iron core control device 100 can be replaced conveniently, and meanwhile, the movable iron core control device 100 is isolated from media, so that the movable iron core control device 100 is prevented from being corroded by the media.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A moving core control device, comprising:

a permanent magnet (110), said permanent magnet (110) being movable towards or away from the plunger to change the position of the plunger with a magnetic force;

the shell (120) is arranged on the valve body and corresponds to the position of the movable iron core, and a space for the permanent magnet piece (110) to move is formed in the shell (120);

the pressing locking mechanism is in extrusion fit with the permanent magnetic piece (110); the permanent magnet (110) is moved and held in a moved position by applying a non-continuous physical pressure to the press locking mechanism.

2. The movable iron core control device according to claim 1, wherein the pressing locking mechanism comprises a first elastic member (130) coaxially arranged with the permanent magnetic member (110), a rotating member (140), a positioning member (150) and a push rod (160); the first elastic piece (130) is arranged at one end of the permanent magnet piece (110) to apply force to the permanent magnet piece (110) to be far away from the movable iron core; the rotating part (140), the positioning part (150) and the push rod (160) are arranged at the other end of the permanent magnet part (110), the positioning part (150) is a ring body and is fixed in the shell (120), one end of the positioning part (150) facing the permanent magnet part (110) is provided with first ratchets (151) which are arranged circumferentially, a first guide rail (152) and a second guide rail (153) are arranged on the inner wall of the positioning part (150) at intervals corresponding to the first ratchets (151), and the inward sinking depths of the first guide rail (152) and the second guide rail (153) are different; the rotating piece (140) is provided with a plurality of second ratchet teeth (141) which are arranged at intervals along the periphery and matched with the first ratchet teeth (151); one end of the push rod (160) abuts against the second ratchet, lugs (162) which are equidistantly spaced are arranged on the outer side of the push rod (160) along the circumferential direction, and the lugs (162) are clamped with the first guide rail (152) or the second guide rail (153), so that the push rod (160) cannot be separated from the positioning piece (150); the second ratchet (141) can be inserted into the first guide rail (152) but not into the second guide rail (153), and the rotating member (140) is moved and can be held at a moved position.

3. A moving core control device according to claim 2, characterized in that an outer casing (170) is provided outside the permanent magnet (110), a channel for the permanent magnet (110) to be inserted is provided inside the outer casing (170), the outer casing (170) abuts against the first elastic member (130), the permanent magnet (110) is connected to the rotating member (140) through a second elastic member (111), and the second elastic member (111) applies a force to the permanent magnet (110) to be inserted into the outer casing (170).

4. A plunger control device according to claim 2, wherein the end of the push rod (160) abutting the second ratchet (141) is provided with an annular concave tooth (161), and the annular concave tooth (161) is engaged with the second ratchet (141).

5. A plunger control device according to claim 2, characterised in that the plunger (160) is provided with a pressing member (190).

6. A control valve, characterized in that it comprises a moving core control device (100) according to any one of claims 1-5.

7. A control valve according to claim 6, characterized by comprising a valve body (1), wherein a first chamber (11) and a second chamber (12) are arranged in the valve body (1), the first chamber (11) and the second chamber (12) are separated by a diaphragm assembly (2), the first chamber (11) is annular, a medium outlet (3) is arranged in the first chamber (11), a partition plate (13) is arranged between the first chamber (11) and the medium outlet (3), and a gap is arranged between the partition plate (13) and the diaphragm assembly (2); a bypass hole (21) is formed in the membrane assembly (2), and the first chamber (11) is communicated with the second chamber (12) through the bypass hole (21); the first chamber (11) is communicated with a medium inlet (4); the second cavity (12) is communicated with the medium outlet (3) through a pressure relief channel (5), an electric control movable iron core structure and a manual movable iron core structure are arranged on the pressure relief channel (5) to control closing/opening, and the manual movable iron core structure is controlled by a movable iron core control device (100).

8. A control valve according to claim 7, characterized in that said electrically controlled plunger structure comprises a first plunger (62) and a third chamber (61), said third chamber (61) communicating with said pressure relief channel (5) through a first pilot hole (63), said first plunger (62) being able to close/open said first pilot hole (63); the manual movable iron core structure comprises a second movable iron core (72) and a fourth chamber (71), the fourth chamber (71) is communicated with the pressure relief channel (5) through a second pilot hole (73), and the second movable iron core (72) can close/open the second pilot hole (73); the third chamber (61) and the fourth chamber (71) are communicated through a third pilot hole (15), and the second chamber (12) is communicated with the third chamber (61) or the fourth chamber (71) through a fourth pilot hole (14).

9. A control valve according to claim 8, characterized in that said first plunger (62) closes said first pilot hole (63) by means of the elastic force provided by a third elastic member, said first plunger (62) opening said first pilot hole (63) by means of an electric control member; the second movable iron core (72) closes the second pilot hole (73) by the elastic force provided by the fourth elastic member, and the second movable iron core (72) opens the second pilot hole (73) by the movable iron core control device (100).

10. A control valve according to any of claims 6-9, characterized in that the plunger control means (100) is detachably fixed outside the valve body (1).

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