Locking valve

Abstract

The utility model relates to a locking valve, which belongs to the technical field of valves, and comprises a valve body, a valve core and a valve rod, a base is arranged on the valve body, the valve core is positioned in the valve body, one end of the valve rod penetrates through the base and the valve body and then is connected with the valve core, the other end of the valve rod extends out of the base, the upper end part of the valve rod is connected with a valve cover, and a travel groove is arranged on the base. A stroke groove is formed in the base, a stroke block used in cooperation with the stroke groove is arranged in the valve deck, a locking device is arranged between the base and the valve deck and comprises an elastic piece and a first magnet, a mounting groove used for containing the elastic piece and the first magnet is formed in the base, and a limiting groove used for containing part of the first magnet is formed in the valve deck. The first magnet extends into the limiting groove of the valve deck under the elastic effect of the elastic piece, and an unlocking device capable of controlling the first magnet to move away from the valve deck is arranged on the valve deck. The locking valve is simple and reasonable in structure, and the valve locking device is difficult to damage.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to a lock valve. Background Art

[0002] Ball valves are widely used in civil applications as well as in industries such as petroleum and chemical engineering. Existing ball valves lack effective controls for opening and closing, with the opening and closing mechanisms directly exposed to the outside of the valve body and lacking necessary protective mechanisms. These valves are not only susceptible to accidental damage or unauthorized opening, but also allow anyone with access to operate them at will, undoubtedly increasing the difficulty of managing public facilities and community properties.

[0003] Common valves equipped with locking devices on the market, such as the magnetic locking valve disclosed in Chinese Patent Publication No. CN205504164U, comprise a valve stem and a valve body with a journal. The outer end of the valve stem extends from the journal, while the inner end of the valve stem is located within the valve body. A rotating drum connected to the valve stem is mounted on the journal, and a groove is formed on the inner wall of the rotating drum. The journal is provided with a magnetic post that can move radially along the journal, and a spring that forces the magnetic post to enter the groove. The inner wall of the rotating drum is provided with an arc groove that faces the journal, and a stopper that is inserted into the arc groove. The inner wall of the rotating drum also has a blocking surface. One end of the arc groove, the blocking surface, the other end of the arc groove, and the groove are arranged in sequence around the axis of the rotating drum. When the magnetic post is released from the groove and the rotating drum is rotated, the magnetic post can contact the blocking surface. This magnetic locking valve offers the advantage that even when the magnetic lock is removed, the user can still control the valve opening and closing.

[0004] This type of valve requires a specific magnetic lock to unlock, which improves the valve's safety and reliability to a certain extent. However, the design of the lockshield valve is not rational. It uses a single magnetic column to lock the drum. Clamping the connecting lug on the drum with a pipe wrench can violently destroy the magnetic column, rendering the locking device ineffective and allowing the valve to be easily opened or closed. Utility Model Content

[0005] The utility model aims to provide a locking valve with a simple and reasonable structure and a valve locking device that is difficult to destroy.

[0006] The purpose of this utility model is achieved in this way:

[0007] A locking valve comprises a valve body, a valve core and a valve stem, wherein the valve body is provided with a base, the valve core is located in the valve body, one end of the valve stem passes through the base and the valve body and is connected to the valve core, the other end of the valve stem extends out of the base, the upper end of the valve stem is connected to the valve cover, the valve cover covers the outer side of the base, the base is provided with a travel groove, the valve cover is provided with a travel block used in conjunction with the travel groove, a locking device is provided between the base and the valve cover, the locking device comprises an elastic member and a magnet, the base is provided with a mounting groove for accommodating the elastic member and the magnet, the valve cover is provided with a limiting groove for accommodating part of the magnet, one end of the elastic member abuts against the bottom of the mounting groove, and the other end abuts against the magnet, and the magnet extends into the limiting groove of the valve cover under the elastic action of the elastic member, the valve cover is provided with an unlocking device that can control the magnet to move away from the valve cover, and the valve core can be controlled to open and close the liquid channel in the valve body by rotating the unlocking device.

[0008] In the above-mentioned locking valve, there are three locking devices, two of which are arranged away from the travel groove, and the other one is arranged close to the travel groove.

[0009] In the above-mentioned locking valve, the unlocking device controls the rotation angle of the valve cover to be 90°.

[0010] In the above-mentioned lock valve, the travel groove is a fan-shaped structure.

[0011] In the above-mentioned locking valve, the unlocking device includes an unlocking cap, a handle and several second magnets. The handle is inserted into the unlocking cap, and the second magnet is fixed in the unlocking cap, and the lower end surface and the upper end surface of the first magnet are repelled from each other.

[0012] In the above-mentioned locking valve, the number of the magnets 2 is six, three magnets 2 form a group, and two groups of magnets 2 are arranged opposite to each other.

[0013] In the above-mentioned locking valve, a rotating shaft is protruded on the upper end of the valve cover, a positioning groove is provided on the circumference of the rotating shaft, the unlocking cap is provided with an axial hole for use with the rotating shaft, and a locking tooth for use with the positioning groove is provided on the side wall of the axial hole.

[0014] In the above-mentioned locking valve, a plurality of positioning grooves are provided, and the positioning grooves are arranged in groups of two. Four groups of positioning grooves are provided on the circumference of the rotating shaft.

[0015] In the above-mentioned locking valve, the four groups of positioning grooves are arranged opposite to each other in pairs, and the distances between two adjacent groups of positioning grooves are different.

[0016] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0017] The valve body of the utility model is provided with a stroke groove on the base, the valve cover provided on the valve seat is connected to the valve stem, and a stroke block used in conjunction with the stroke groove is provided in the valve cover. The valve cover can only rotate 90 degrees in the forward or reverse direction under the cooperation of the stroke groove and the stroke block. At the same time, a locking device is provided between the base and the valve cover. When the valve core closes the liquid passage in the valve body, the upper and lower parts of the magnet of the locking device are located in the limit groove of the valve cover and the mounting groove of the base, and there are three locking devices, which is used to increase the difficulty of destruction by destroyers; when the valve core opens the liquid passage in the valve body, the upper and lower parts of the magnet of one of the locking devices are located in the limit groove of the valve cover and the mounting groove of the base, which can also prevent other people from closing the valve and increase the difficulty of destruction by destroyers; and a rotating shaft is provided on the valve cover, and a positioning groove is provided on the rotating shaft. The number of positioning grooves is small, and it is not easy for destroyers to clamp the rotating valve cover with needle-nosed pliers or pliers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0019] Figure 2 yes Figure 1 sectional view of

[0020] Figure 3 yes Figure 1 Exploded diagram;

[0021] Figure 4 This is an exploded view of the unlocking device, valve cover and locking device of the utility model;

[0022] Figure 5 It is a top view of the valve cover of the utility model;

[0023] Figure 6 This is a cross-sectional view of the valve core after it is opened (the arrow direction indicates the disengagement direction of the locking device);

[0024] Figure 7 It is a cross-sectional view of the valve core after closing.

[0025] The meaning of the numbers in the figure:

[0026] 1. Valve body; 2. Valve core; 3. Valve stem; 4. Base; 41. Stroke groove; 42. Stroke block;

[0027] 5. Valve cover; 51. Rotating shaft; 52. Positioning groove; 53. Shaft hole; 54. Gear;

[0028] 6. Locking device; 61. Elastic member; 62. Magnet 1; 63. Mounting slot; 64. Limiting slot;

[0029] 7. Unlocking device; 71. Unlocking cap; 72. Handle; 73. Magnet 2. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with specific embodiments:

[0031] like Figure 1-Figure 7 As shown: A locking valve, comprising a valve body 1, a valve core 2 and a valve stem 3, wherein the valve body 1 is provided with a base 4, the valve core 2 is located in the valve body 1, one end of the valve stem 3 passes through the base 4 and the valve body 1 and is connected to the valve core 2, the other end of the valve stem 3 extends out of the base 4, the upper end of the valve stem 3 is bonded or screwed with a valve cover 5, which is equivalent to the valve cover 5 being fixedly connected to the valve stem 3, the valve cover 5 covering the outside of the base 4, the base 4 is provided with a stroke groove 41, the valve cover 5 is provided with a stroke block 42 used in conjunction with the stroke groove 41, a locking device 6 is provided between the base 4 and the valve cover 5, the locking device 6 includes an elastic member 61 and a magnet 62, and the base 4 is provided with a member for accommodating the elastic member 6 1 and a mounting groove 63 for magnet 1 62, the valve cover 5 is provided with a limiting groove 64 for accommodating part of the magnet 1 62, one end of the elastic member 61 abuts against the bottom of the mounting groove 63, and the other end abuts against the magnet 1 62, and the magnet 1 62 extends into the limiting groove 64 under the elastic action of the elastic member 61, the elastic member 61 is a spring or a spring, and the valve cover 5 is provided with an unlocking device 7 that can control the magnet 1 62 to move away from the valve cover 5. By rotating the unlocking device 7, the valve core 2 can be controlled to open and close the liquid channel in the valve body 1. The unlocking device 7 controls the rotation angle of the valve cover 5 to 90°, and the travel groove 41 is a fan-shaped structure. Specifically, this is to ensure that the user can conveniently open or close the locking valve.

[0032] The travel block 42 and the valve cover 5 are integrally formed. In some embodiments, the travel block 42 and the valve cover 5 are separate bodies, and the travel block 42 and the valve cover 5 are connected by plugging or screws.

[0033] In the above-mentioned locking valve, there are three locking devices 6, and two of them are arranged away from the stroke groove 41, and the other is arranged close to the stroke groove 41. Specifically, the positions of the three locking devices are arranged to form a right triangle, and when the valve core closes the liquid passage in the valve body, the upper and lower parts of the magnet of the locking device are located in the limit groove of the valve cover and the mounting groove of the base, and there are three locking devices, which is used to increase the difficulty of destruction by destroyers; when the valve core opens the liquid passage in the valve body, the upper and lower parts of the magnet of one of the locking devices are located in the limit groove of the valve cover and the mounting groove of the base, so that It can also prevent other people from closing the valve, and increase the difficulty of destruction by saboteurs. It is worth mentioning that the three magnets of the three locking devices are magnet 1A, magnet 1B and magnet C, and the distance between magnet 1A and magnet 1B is smaller than the distance between magnet 1A and magnet C and the distance between magnet 1B and magnet C. There are also three limiting grooves on the valve cover, which correspond one to one with magnet 1A, magnet 1B and magnet C. The three limiting grooves are limiting groove a, limiting groove b and limiting groove c. When the valve core opens the liquid channel in the valve body, magnet 1B extends into the limiting groove c.

[0034] In the above-mentioned locking valve, the unlocking device 7 includes an unlocking cap 71, a handle 72 and several magnets 73. The handle 72 is passed through the unlocking cap 71, and the magnet 73 is fixed in the unlocking cap 71. The magnetic force between the lower end surface of the magnet 73 and the upper end surface of the magnet 1 62 is a repulsive force. Specifically, this is to facilitate the user to unlock. The magnet 2 can push the magnet 1 to move downward and disengage from the limit groove, so that the unlocking cap 71 can drive the valve cover and rotate, thereby controlling the valve core to open and close the liquid channel of the valve body.

[0035] In the above-mentioned locking valve, the number of the second magnets 73 is six, and the second magnets 73 are grouped into three, and the two groups of second magnets 73 are arranged opposite to each other. Specifically, this is to reduce the difficulty of use for the user. No matter in which direction the user mates the unlocking cap with the valve cover, the second magnet can always push the first magnet to move downward and out of the limit groove.

[0036] In the above-mentioned locking valve, a rotating shaft 51 is convexly formed on the upper end of the valve cover 5, and a positioning groove 52 is provided on the circumferential side of the rotating shaft 51. The unlocking cap 71 is provided with an axial hole 53 used in conjunction with the rotating shaft 51, and a latching tooth 54 used in conjunction with the positioning groove 52 is provided on the side wall of the axial hole 53. There are several positioning grooves 52, and the positioning grooves 52 are grouped in pairs. Four groups of positioning grooves 52 are provided on the circumferential side of the rotating shaft 51, and the number of latching teeth 54 corresponds to the number of positioning grooves 52. Specifically, this is to facilitate the unlocking cap to be inserted into the valve cover, and also to facilitate the unlocking cap to drive the valve cover.

[0037] In the above-mentioned locking valve, the four groups of positioning grooves 52 are arranged opposite to each other in pairs, and the distances between two adjacent groups of positioning grooves 52 are different. Specifically, the distances between two relative groups of positioning grooves are the same. This is to ensure that when the unlocking cap is matched with the valve cover, each magnet 1 62 has a corresponding magnet 2 73.

[0038] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A locking valve, comprising a valve body (1), a valve core (2) and a valve stem (3), wherein the valve body (1) is provided with a base (4), the valve core (2) is located in the valve body (1), one end of the valve stem (3) passes through the base (4) and the valve body (1) and is connected to the valve core (2), and the other end of the valve stem (3) extends out of the base (4), characterized in that: The upper end of the valve stem (3) is connected to a valve cover (5), and the valve cover (5) covers the outer side of the base (4). The base (4) is provided with a travel groove (41), and the valve cover (5) is provided with a travel block (42) used in conjunction with the travel groove (41). A locking device (6) is provided between the base (4) and the valve cover (5), and the locking device (6) includes an elastic member (61) and a magnet (62). The base (4) is provided with a mounting groove (63) for accommodating the elastic member (61) and the magnet (62). The valve cover (5) is provided with a limiting groove (64) for accommodating part of the magnet 1 (62), one end of the elastic member (61) abuts against the bottom of the installation groove (63), and the other end thereof abuts against the magnet 1 (62), and the magnet 1 (62) extends into the limiting groove (64) of the valve cover (5) under the elastic action of the elastic member (61), and the valve cover (5) is provided with an unlocking device (7) that can control the magnet 1 (62) to move away from the valve cover (5), and the valve core (2) can be controlled to open and close the liquid channel in the valve body (1) by rotating the unlocking device (7).

2. The lock valve according to claim 1, wherein: There are three locking devices (6), two of which are arranged away from the travel groove (41), and the other is arranged close to the travel groove (41).

3. The lock valve according to claim 1, wherein: The unlocking device (7) controls the rotation angle of the valve cover (5) to be 90°.

4. The lock valve according to claim 1, 2 or 3, characterized in that: The travel groove (41) is a fan-shaped structure.

5. The lock valve according to claim 4, characterized in that: The unlocking device (7) comprises an unlocking cap (71), a handle (72) and a plurality of second magnets (73). The handle (72) is inserted into the unlocking cap (71). The second magnet (73) is fixed in the unlocking cap (71), and the lower end surface and the upper end surface of the first magnet (62) are arranged to repel each other.

6. The lock valve according to claim 5, characterized in that: The number of the second magnets (73) is six, three of the second magnets (73) form a group, and two groups of second magnets (73) are arranged opposite to each other.

7. The lockshield valve according to claim 5 or 6, characterized in that: The upper end portion of the valve cover (5) is convexly formed with a rotating shaft (51), and a positioning groove (52) is provided on the circumferential side of the rotating shaft (51). The unlocking cap (71) is provided with an axial hole (53) used in conjunction with the rotating shaft (51), and a latching tooth (54) used in conjunction with the positioning groove (52) is provided on the side wall of the axial hole (53).

8. The lock valve according to claim 7, wherein: There are a plurality of positioning grooves (52), and the positioning grooves (52) are arranged in groups of two. Four groups of positioning grooves (52) are arranged on the circumference of the rotating shaft (51).

9. The lockshield valve according to claim 8, characterized in that: The four groups of positioning grooves (52) are arranged opposite to each other in pairs, and the distances between two adjacent groups of positioning grooves (52) are different.

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