CN218494311U

CN218494311U - Valve anti-theft device

Info

Publication number: CN218494311U
Application number: CN202222010646.0U
Authority: CN
Inventors: 顾岱鸿; 刘广峰; 豆彬龙; 闫建武; 吕占芯; 王璐; 薛启启; 刘金超
Original assignee: Beijing Polydoctor Petroleum Technology Co ltd; China University of Petroleum Beijing
Current assignee: Beijing Polydoctor Petroleum Technology Co ltd; China University of Petroleum Beijing
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-02-17
Anticipated expiration: 2032-08-01

Abstract

The utility model relates to the technical field of anti-theft devices, and provides a valve anti-theft device, which comprises a valve body component and a driving component, wherein the valve body component comprises a valve seat, a valve core and a valve rod, the valve seat is provided with a valve port, the valve core is arranged at the position of the valve port, and the valve rod is connected on the valve core; the driving assembly comprises a driving component, an opening valve component and a closing valve component, the opening valve component and the closing valve component are respectively connected with the valve rod, the driving component is connected with the opening valve component and is suitable for driving the opening valve component to move so as to drive the valve rod to move so as to open the valve port, and the closing valve component is suitable for driving the valve rod to move reversely so as to close the valve port. The valve body assembly and the driving assembly are arranged, so that the driving part works, the valve opening part is driven to move to drive the valve rod to move, and the valve core rotates along the axial direction of the valve core to open the valve port; the valve closing component is suitable for driving the valve rod to move reversely so as to close the valve port. Realize the automatic opening of valve port and close through mechanical structure, can improve the security of well head or hydraulic fluid port, avoid the theft phenomenon to take place.

Description

Valve anti-theft device

Technical Field

The utility model relates to an anti-theft device technical field especially relates to a valve anti-theft device.

Background

In the related technology, due to the fact that the oil field area is large, supervision and anti-theft measures are not enough, the phenomenon that oil field crude oil at an oil extraction well head, an oil outlet of an oil storage tank and a gate valve control point of an oil conveying pipeline is stolen occurs occasionally, the normal production of the oil field is seriously affected, and the oil field is easily subjected to heavy economic loss.

SUMMERY OF THE UTILITY MODEL

The utility model provides a valve anti-theft device for solve the defect of above-mentioned at least one item in the prior art, realize through mechanical structure that the valve port is automatic to be opened and close, can improve the security of well head or hydraulic fluid port, prevent artificially to destroy the valve in order to take place the theft phenomenon.

The utility model provides a valve anti-theft device, include:

the valve body assembly comprises a valve seat, a valve core and a valve rod, wherein a valve port is formed in the valve seat, the valve core is arranged at the position of the valve port, and the valve rod is connected to the valve core;

the driving component is connected with the valve opening component and is suitable for driving the valve opening component to move so as to drive the valve rod to move and open the valve port, and the valve closing component is suitable for driving the valve rod to move in the reverse direction so as to close the valve port.

According to the utility model provides a pair of valve anti-theft device, the disk seat includes:

a first flange;

the second flange is coaxially arranged with the first flange;

a first end cap connected between the first flange and the second flange;

the second end cover is arranged opposite to the first end cover and is connected between the first flange and the second flange;

wherein the valve port is configured in a space enclosed by the first flange, the second flange, the first end cover and the second end cover.

According to the utility model provides a pair of valve anti-theft device, first end cover with the through-hole has been seted up on any in the second end cover, the valve rod with case fixed connection, the valve rod is worn to locate the through-hole.

According to the utility model provides a valve anti-theft device, a first runner is constructed in the first flange, and a second runner is constructed in the second flange;

the diameter of the valve core is respectively larger than the inner diameters of the first flow passage and the second flow passage;

the valve core is provided with a sealing surface and an overflowing surface which are arranged at an included angle, the valve core opens the valve port, the overflowing surface is suitable for fluid circulation, the valve core closes the valve port, and the sealing surface abuts against at least one of the first flange and the second flange.

According to the utility model provides a pair of valve anti-theft device, the case with be provided with the sealing member between first flange and/or the second flange, wherein arbitrary one the sealing member supports through righting the ball seat.

According to the utility model provides a pair of valve anti-theft device, open the valve part and include:

the jacking assembly comprises a cam and a transmission shaft, the cam is fixedly connected to the transmission shaft, and the transmission shaft is in transmission connection with the driving part;

the moving assembly comprises a lifting block and a first moving piece, the first moving piece is in transmission connection with the valve rod through a transmission part, the lifting block is fixedly connected with the first moving piece, and the lifting block is located on a motion path of the cam and is suitable for being jacked up by the cam.

According to the anti-theft device for the valve, the valve closing part comprises a second moving part and an elastic part, the second moving part is in transmission connection with the valve rod through a transmission part and is arranged opposite to the first moving part;

the elastic piece is sleeved on the first moving piece and is positioned between the limiting piece and the limiting table.

According to the utility model provides a pair of valve anti-theft device, first moving member with the second moving member dorsad the equal butt in one side of transmission portion has anticreep piece, anticreep piece is suitable for the restriction first moving member with the second moving member breaks away from transmission portion.

According to the utility model provides a pair of valve anti-theft device still includes magnetism and inhales the subassembly, magnetism is inhaled the subassembly and is included sucking disc and electro-magnet, the sucking disc sets up open the tip of valve part, and follow open the valve part and remove, the electro-magnet sets up on the removal route of sucking disc, be suitable for the absorption the sucking disc.

According to the utility model provides a pair of valve anti-theft device, drive unit includes motor, input control circuit and master control circuit, input control circuit with master control circuit electric connection is suitable for the signal transmission who acquires and gives master control circuit, master control circuit with motor electric connection is suitable for the signal of gathering and judges the processing, and control the motor operation.

The valve anti-theft device provided by the utility model is provided with the valve body component and the driving component, so that the driving component works, the valve opening component is driven to move to drive the valve rod to move, the valve core is driven to rotate along the axial direction of the valve core, and the valve port is opened to communicate the runners connected to the two sides of the valve port; the valve closing component is suitable for driving the valve rod to move reversely so as to close the valve port. Realize the automatic opening of valve port and close through mechanical structure, can improve the security of well head or hydraulic fluid port, avoid the theft phenomenon to take place.

Drawings

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

Fig. 1 is a sectional view of a valve anti-theft device provided by the present invention;

fig. 2 is a sectional view of a valve body assembly in the anti-theft device for a valve provided by the present invention;

fig. 3 is a cross-sectional view (left side view) of the valve body assembly and the driving assembly in the valve theft preventing device provided by the present invention;

fig. 4 is a partial sectional view (front view) of a valve body assembly and a driving assembly in the anti-theft device of the valve according to the present invention.

Reference numerals are as follows:

10. a valve body assembly; 11. a valve seat; 111. a first flange; 1111. a first flow passage; 112. a second flange; 1121. a second flow passage; 113. a first end cap; 114. a second end cap; 115. a gland; 116. a first seal ring; 117. righting the ball seat; 118. a second seal ring; 12. a valve core; 13. a valve stem; 131. a driven gear; 14. a bearing;

20. a drive assembly; 21. a drive member; 211. a motor; 212. a motor mounting seat; 213. a base plate; 214. a base; 22. a valve opening member; 221. a cam; 222. a drive shaft; 223. a lifting block; 224. a first moving member; 23. a valve closing member; 231. a second moving member; 232. an elastic member; 233. a limiting member; 234. a limiting table; 24. a first drop prevention member; 25. a second drop prevention member;

30. a magnetic component; 31. a suction cup; 32. an electromagnet; 33. a support;

40. and (4) a box body.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, 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 embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.

In embodiments of the invention, 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," "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.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Embodiments of the present invention will be described below with reference to fig. 1 to 4. It is to be understood that the following description is only exemplary of the present invention and is not intended to constitute any limitation on the present invention.

Referring to fig. 1, an embodiment of the present invention provides a valve anti-theft device to improve the safety of the oil valve port and achieve the anti-theft purpose. The valve is the essential device such as oil recovery well head, oil storage tank oil-out, defeated oil pipe line gate valve control point in the oil field for cut or adjust the fluidic flow in the pipeline, a lot of oil line pipeline installation routes are longer, the scope is great, especially large-scale oil field, because the oil field area that relates to is great, it is not enough to watch to manage and take precautions against theft, the oil recovery well head, the oil-out of oil storage tank, the stolen phenomenon of the crude oil of the oil field of the gate valve control point of defeated oil pipe line takes place occasionally, bring serious influence for the normal production and the work in oil field.

To this end, the present invention provides a valve anti-theft device, as shown in fig. 1 and 2, the valve anti-theft device includes a valve body assembly 10 and a driving assembly 20. The valve body assembly 10 includes a valve seat 11, a valve core 12, and a valve rod 13, wherein a valve port (not numbered) is configured on the valve seat 11, the valve core 12 is disposed at the position of the valve port, and the valve rod 13 is fixedly connected to the valve core 12.

As shown in fig. 1 and 3, the driving assembly 20 includes a driving member 21, a valve opening member 22, and a valve closing member 23. The valve opening part 22 and the valve closing part 23 are respectively connected with the valve rod 13, the driving part 21 is connected with the valve opening part 22 and is suitable for driving the valve opening part 22 to move so as to drive the valve rod 13 to move so as to open the valve port, and the valve closing part 23 is suitable for driving the valve rod 13 to move reversely so as to close the valve port.

It can be understood that, the present invention sets the valve body assembly 10 and the driving assembly 20 to make the driving part 21 work, and drives the valve opening part 22 to move to drive the valve rod 13 to move, so that the valve core 12 rotates along the axial direction thereof to open the valve port to communicate the flow passages connected to the two sides of the valve port; the shut-off valve member 23 is adapted to bring the valve stem 13 in a reverse direction to close the valve port. Realize the automatic opening of valve port and close through mechanical structure, can improve the security of well head or hydraulic fluid port, avoid the theft phenomenon to take place.

As shown in fig. 2, it can be understood that the valve seat 11 includes a first flange 111, a second flange 112, a first end cap 113, and a second end cap 114, the first flange 111 and the second flange 112 are coaxially disposed and are respectively coupled to both ends of the first end cap 113 and the second end cap 114, a first flow passage 1111 for allowing oil to flow therethrough is formed inside the first flange 111, and a second flow passage 1121 for allowing oil to flow therethrough is formed inside the second flange 112. The valve port is formed in the sealed space formed by the first flange 111, the second flange 112, the first end cover 113 and the second end cover 114, and the valve core 12 is positioned at the valve port.

It will be appreciated that the first end cap 113 and the second end cap 114 may be coupled between the first flange 111 and the second flange 112 by fasteners such as bolts, and may be sealingly coupled to the first flange 111 and the second flange 112 by sealing rings. The first flange 111 and the second flange 112 may connect an oil pipe.

As shown in fig. 2, a through hole is formed in the first end cap 113 or the second end cap 114, and the valve rod 13 is connected to the through hole through a transmission member such as a bearing 14, so that the valve rod 13 can rotate in the through hole under the driving of the valve opening component 22, and the valve core 12 is driven to rotate to open the valve port, so that the first flow channel 1111 and the second flow channel 1121 are communicated with each other.

As shown in fig. 2, in order to improve the sealing performance of the through hole and prevent the valve rod 13 from colliding with the second end cap 114 during the movement process, a stepped hole is formed in the through hole, a gland 115 is disposed in the stepped hole, and the gland 115 is in transmission connection with the valve rod 13 through a transmission member such as a bearing 14.

As shown in fig. 2, the valve body 12 is approximately spherical, the diameter of the valve body 12 is larger than the inner diameter of the first flow channel 1111 and the second flow channel 1121, respectively, a sealing surface and an overflowing surface are formed on the valve body 12, and when the valve body 12 closes the valve port, the sealing surface abuts against the end portions of the first flange 111 and the second flange 112 to block the first flow channel 1111 and the second flow channel 1121; when the valve element 12 opens the valve port, an overflow gap is formed between the overflow surface and the inner wall of the valve port, the overflow gap communicates with the first flow channel 1111 and the second flow channel 1121, and oil can flow through the first flow channel 1111 and the second flow channel 1121.

The sealing surface may be an arc surface, the overflow surface may be a plane formed by cutting on the surface of the valve element 12, from the plane, an overflow through hole is formed in a direction perpendicular to the plane, the overflow through hole penetrates through the valve element 12, and when the valve element 12 rotates to enable the overflow surface to face the first flow channel 1111 or the second flow channel 1121, oil can flow from the first flow channel 1111 to the second flow channel 1121, or from the second flow channel 1121 to the first flow channel 1111, so that the valve port is opened.

As shown in fig. 2, in order to improve the sealing between the valve body 12 and the valve port, a seal is provided between the valve body 12 and at least one of the first flange 111 and the second flange 112.

It can be understood that the first sealing ring 116 may be disposed between the spool 12 and the first flange 111, and the first sealing ring 116 may be directly embedded at one end of the first flange 111 near the spool 12, or embedded at one end of the first flange 111 near the spool 12 through a righting ball seat 117, and the righting ball seat 117 is disposed to accommodate adjustment of a sealing gap between the first flange 111 and the spool 12, so as to ensure reliable sealing between the first flange 111 and the spool 12.

Alternatively, a second sealing ring 118 may be disposed between the valve core 12 and the second flange 112, and the second sealing ring 118 may be mounted in the same manner as the first sealing ring 116, and may be directly embedded in one end of the second flange 112 close to the valve core 12, or may be embedded in one end of the second flange 112 close to the valve core 12 through a centering ball seat 117.

Alternatively, a first sealing ring 116 may be provided between the valve element 12 and the first flange 111, a second sealing ring 118 may be provided between the valve element 12 and the second flange 112, the second sealing ring 118 may serve as a fixed sealing element, and the first sealing ring 116 may serve as an adjustable sealing element. Therefore, during installation, the valve core 12 can be ensured to abut against the second sealing ring 118, and the sealing gap between the valve core 12 and the first sealing ring 116 can be adjusted by adjusting the centering ball seat 117.

Specifically, the first sealing ring 116 and the second sealing ring 118 may abut against a sealing surface of the valve core 12 to realize sealing, the first sealing ring 116 and the second sealing ring 118 may be hydrogenated butyronitrile sealing gaskets, a friction coefficient of the hydrogenated butyronitrile sealing gaskets and steel is 0.05, and when the valve is opened or closed, friction between the valve core 12 and each flange can be effectively reduced, so that the valve port can be conveniently and smoothly opened or closed. The first sealing ring 116 is mounted on the first flange 111 by using a centering ball seat 117, and the centering ball seat 117 can provide a pretightening force to enable the first sealing ring 116 to abut against a sealing surface of the valve core 12 for sealing, so that a better sealing effect is achieved.

As shown in fig. 3, it is understood that the driving part 21 includes a motor 211, the motor 211 is fixed on a base plate 213 by a motor mounting base 212, the base plate 213 is detachably coupled to a base 214 by a fastener such as a bolt, and the base 214 is installed inside the cabinet 40.

As shown in fig. 3, it can be understood that the valve opening part 22 includes a jack-up assembly and a moving assembly. The jacking assembly comprises a cam 221 and a transmission shaft 222, the cam 221 can be fixedly connected to the transmission shaft 222 in a key connection or interference fit mode, the transmission shaft 222 is in transmission connection with an output shaft of the motor 211 and can be connected through a coupler, or a driving gear is fixedly connected to an output end of the motor 211, a gear meshed with the driving gear is fixedly arranged on the transmission shaft 222, and the motor 211 and the transmission shaft 222 can be in transmission connection through gear meshing.

As shown in fig. 3, the moving assembly includes a lifting block 223 and a first moving member 224, the lifting block 223 is fixedly connected to the first moving member 224, the first moving member 224 is guided to penetrate through the motor mounting base 212, the bottom plate 213 and the base 214, and the end portion of the first moving member 224 extends out of the base 214 and extends into the valve seat 11 to be in transmission connection with the valve rod 13 through a transmission portion arranged on the valve rod 13.

Specifically, the transmission part is the driven gear 131 that passes through key connection or interference fit's mode fixed connection at the tip of valve rod 13, and first moving member 224 can be rack or worm, and first moving member 224 meshes with driven gear 131, and when first moving member 224 removed, can drive driven gear 131 and rotate to drive valve rod 13 and rotate, so that case 12 synchronous rotation, in order to open the valve port.

The first moving member 224 may be integrally formed, and partially disposed with a rack, and partially disposed with a polish rod, and the lifting block 223 is fixedly connected to the polish rod. The first moving member 224 may also be provided separately and includes a rack and a moving rod, and the rack is fixedly connected to the moving rod so that the rack moves synchronously with the moving rod.

When the motor 211 works to drive the transmission shaft 222 to rotate, the cam 221 rotates along with the transmission shaft 222 to jack the lifting block 223, the lifting block 223 drives the first moving member 224 to move upwards, the driven gear 131 is driven to rotate to drive the valve rod 13 to rotate, and the valve core 12 rotates by a certain angle to open the valve port.

As shown in fig. 4, it can be understood that the valve closing member 23 includes a second moving member 231 and an elastic member 232, the second moving member 231 is disposed opposite to the first moving member 224 and is engaged with the driven gear 131, a stopper 233 is fixedly disposed at an end portion of the second moving member 231, a stopper stage 234 is disposed on the valve seat 11 on a moving path of the second moving member 231, and the elastic member 232 is fitted over the second moving member 231 and is disposed between the stopper 233 and the stopper stage 234.

The second moving part 231 is arranged in the same manner as the first moving part 224, and can be arranged by referring to the arrangement of the first moving part 224, which is not described herein.

When the control valve port is opened, the driven gear 131 is driven by the first moving part 224 to rotate, and simultaneously drives the second moving part 231 to move in the direction opposite to the moving direction of the first moving part 224, that is, the first moving part 224 moves upwards to drive the driven gear 131 to rotate clockwise, so that the second moving part 231 moves downwards, and the elastic part 232 abuts against the limiting part 233 and the limiting table 234 respectively, so that the valve is in a compression state, and has the capability of recovering elastic deformation.

When the motor 211 is powered off and the elastic member 232 recovers the elastic deformation, the limiting member 233 is lifted upwards, and the limiting member 233 drives the second rack to move, so that the driven gear 131 rotates counterclockwise, and further the valve rod 13 rotates in the reverse direction, and the valve core 12 is driven to rotate in the reverse direction to close the valve port.

As shown in fig. 4, it is understood that the position-limiting platform 234 can be a stepped groove formed on the valve seat 11, and the stepped groove not only can play a position-limiting role to restrain the elastic member 232 from moving, but also can provide a guide for the movement of the elastic member 232 to prevent the elastic member 232 from tilting during the movement process to damage the elastic member 232.

As shown in fig. 4, in order to make the engagement between the first moving member 224 and the driven gear 131 more effective, a first escape preventing member 24 is abutted on a side of the first moving member 224 facing away from the driven gear 131.

The first anti-slip member 24 may be a bearing or a gear, and when the first anti-slip member 24 is a bearing, a surface of the bearing may be disposed on the first moving member 224 in a fitting manner, and when the first moving member 224 moves, the surface of the bearing may be in rolling contact with a surface of the first moving member 224. When the first anti-slip element 24 is a gear, a rack is correspondingly disposed on a side of the first moving element 224 opposite to the driven gear 131, and the gear can be in transmission connection with the rack, so as to prevent the first moving element 224 from disengaging from the driven gear 131, and disable the connection relationship therebetween.

As shown in fig. 4, in order to make the engagement effect between the second moving member 231 and the driven gear 131 better, a second anti-falling member 25 is abutted on a side of the second moving member 231 opposite to the driven gear 131, and the form and the arrangement mode of the second anti-falling member 25 may be the same as those of the first anti-falling member 24, and thus are not described again.

Referring to fig. 1, fig. 3 and fig. 4, as an embodiment of the present invention, on the basis of the above embodiment, the present embodiment further includes a magnetic attraction assembly 30. The magnetic attraction assembly 30 comprises a suction cup 31 and an electromagnet 32, wherein the suction cup 31 is connected to the end of the first moving member 224, and the electromagnet 32 is fixedly installed on the top of the box body 40 and is located on the moving path of the suction cup 31.

When the motor 211 works, drive the transmission shaft 222 and rotate, the cam 221 rotates along with the transmission shaft 222 to jack up the lifting block 223, the lifting block 223 drives the first moving part 224 to move upwards, the sucking disc 31 moves upwards along with the first moving part 224, approach to the electromagnet 32, generate magnetic force after electrifying the electromagnet 32, so that the electromagnet 32 and the sucking disc 31 are adsorbed together, the valve port keeps an open state, at the moment, the power can be cut off for the motor 211, the sucking disc 31 and the electromagnet 32 continuously keep an adsorption state, the valve port can be kept in an open state, the motor 211 can be effectively prevented from continuously working, the motor 211 is prevented from being burnt out, valve faults are caused, and meanwhile the service life of the motor 211 can be prolonged.

When the valve port needs to be closed, the electromagnet 32 is powered off, the electromagnet 32 loses magnetic force, the adsorption force between the suction disc 31 and the electromagnet 32 is weakened, the elastic restoring force of the elastic piece 232 overcomes the adsorption force between the suction disc 31 and the electromagnet 32, the elastic piece 232 restores elastic deformation and jacks up the limiting piece 233, and the limiting piece 233 drives the second rack to move, so that the driven gear 131 rotates anticlockwise, the valve rod 13 rotates reversely, and the valve core 12 is driven to rotate reversely to close the valve port. When the driven gear 131 rotates counterclockwise, the first moving member 224 is driven to move downward synchronously, and the suction cup 31 moves downward along with the first moving member 224 to return to the original position.

It should be noted that the box 40 has an explosion-proof performance, and is permanently closed, i.e. it cannot be opened in a nondestructive manner, so as to further achieve the purpose of theft prevention. The case 40 may be a cast aluminum alloy explosion-proof case, a Q235 steel plate welded explosion-proof case, a 304 or 316 stainless steel welded explosion-proof case, or the like. At least a portion of the drive assembly 20 is located within the housing 40 to increase the anti-theft effect.

In some embodiments of the present application, the valve anti-theft device may be set to be fully automatically controlled, that is, the driving assembly 20 further includes an input control circuit and a main control circuit, the input control circuit is electrically connected to the main control circuit, and is adapted to transmit the acquired signal to the main control circuit, the main control circuit is electrically connected to the motor 211, and is adapted to perform judgment processing on the acquired signal and control the motor 211 to operate.

The input control circuit can include a keypad circuit, a fingerprint head circuit and a face recognition circuit, after a user inputs a key, a fingerprint or a face recognition, the corresponding circuit transmits a signal to the main control circuit, the main control circuit judges and processes the collected signal, if the input password, fingerprint data or face recognition data are correct, the motor drive is controlled through a single chip microcomputer output signal, and the motor drive controls the motor 211 to operate through level conversion.

The embodiment of the utility model provides an in the installation, base 214 is fixed in box 40, bottom plate 213 is fixed on base 214, motor mount pad 212 is fixed on bottom plate 213, motor 211 is fixed on motor mount pad 212, transmission shaft 222 passes through bearing 14 to be fixed on motor mount pad 212, cam 221 passes through the key-type connection to be fixed on transmission shaft 222, lifting block 223 links together through lifting bar (not shown in the figure) with sucking disc 31, electro-magnet 32 is fixed on support 33, support 33 passes through the connecting rod to be fixed on box 40.

When an instruction is input to the motor 211 through a fingerprint, the motor 211 operates to drive the cam 221 and the transmission shaft 222 to integrally rotate, the cam 221 lifts the lifting block 223 and the suction cup 31 to the position of the electromagnet 32, and meanwhile, the electromagnet 32 is electrified to attract the electromagnet 32 and the suction cup 31. The first moving member 224 moves upward to drive the driven gear 131 to rotate, and further drives the valve rod 13 to rotate, so that the valve core 12 rotates a certain angle to open the valve port.

When the valve port needs to be closed, the electromagnet 32 is powered off, the electromagnet 32 loses magnetic force, the adsorption force between the suction disc 31 and the electromagnet 32 is weakened, the elastic restoring force of the elastic piece 232 overcomes the adsorption force between the suction disc 31 and the electromagnet 32, the elastic piece 232 restores elastic deformation and jacks up the limiting piece 233, and the limiting piece 233 drives the second rack to move, so that the driven gear 131 rotates anticlockwise, the valve rod 13 rotates reversely, and the valve core 12 is driven to rotate reversely to close the valve port. When driven gear 131 anticlockwise rotates, drive first moving member 224 downstream in step, sucking disc 31 resumes the normal position along with first moving member 224 downstream, has realized that the fingerprint instruction opens the valve, cuts off the purpose of closing the valve. Because the fingerprint has uniqueness, therefore through fingerprint input control valve opening, can improve valve anti-theft device's security, make the theftproof effect better.

It should be noted that the technical solutions in the embodiments of the present invention can be combined with each other, but the basis of the combination is that those skilled in the art can realize the combination; when the technical solutions are contradictory or cannot be combined, it should be considered that such a technical solution is not present, that is, the technical solution does not belong to the protection scope of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A valve anti-theft device, comprising:

2. The valve theft protection device of claim 1, wherein said valve seat comprises:

a first flange;

the second flange is coaxially arranged with the first flange;

a first end cap connected between the first flange and the second flange;

3. The valve anti-theft device according to claim 2, wherein a through hole is formed in any one of the first end cover and the second end cover, the valve rod is fixedly connected with the valve core, and the valve rod penetrates through the through hole.

4. The valve theft protection device of claim 2, wherein said first flange has a first flow passage formed therein, and said second flange has a second flow passage formed therein;

5. The valve theft protection device of claim 2, wherein a seal is provided between said spool and said first and/or second flange, wherein either of said seals is supported by a centering ball seat.

6. The valve theft protection device of claim 1, wherein said valve opening member comprises:

7. The valve theft protection device of claim 6, wherein said shut-off valve member includes a second moving member and a resilient member, said second moving member being drivingly connected to said valve stem through a transmission portion and disposed opposite said first moving member;

8. The valve theft preventing device according to claim 7, wherein a side of each of the first moving member and the second moving member facing away from the transmission portion abuts with a disengagement preventing member adapted to restrict the first moving member and the second moving member from disengaging from the transmission portion.

9. The valve theft protection device according to any one of claims 1 to 8, further comprising a magnetic attraction member including a suction cup and an electromagnet, wherein the suction cup is disposed at an end of the valve opening member and moves with the valve opening member, and the electromagnet is disposed on a moving path of the suction cup and adapted to attract the suction cup.

10. The valve theft protection device according to any one of claims 1 to 8, wherein the driving unit comprises a motor, an input control circuit and a main control circuit, the input control circuit is electrically connected to the main control circuit and adapted to transmit the acquired signal to the main control circuit, and the main control circuit is electrically connected to the motor and adapted to perform judgment processing on the acquired signal and control the motor to operate.