Concealed locking valve

Abstract

The utility model discloses a built-in locking valve, which belongs to the technical field of valves, and is characterized in that the built-in locking valve comprises a valve body, a valve rod, a valve core and an unlocking cap, the valve core is rotatably arranged in the valve body, the valve rod is rotatably arranged in the valve body, the valve core is connected with the valve rod, the outer side wall of the valve rod is provided with a containing groove, and the unlocking cap is arranged in the containing groove. A first magnetic block and a first spring are arranged in the containing groove, a positioning groove is formed in the inner side wall of the valve body, the first spring is used for pushing one part of the magnetic block into the positioning groove, a second magnetic block is arranged on the side wall of the unlocking cap, the second magnetic block and the first magnetic block repel each other in magnetism, the second magnetic block is used for pushing the first magnetic block away from the positioning groove, and the unlocking cap can drive the valve rod to rotate. According to the locking valve, the overall structure is simplified, the manufacturing complexity is effectively reduced, production and manufacturing are more convenient, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a built-in locking valve. Background Art

[0002] A ball valve is a very common valve. Its opening and closing member (the ball) is driven by a valve stem and rotates around the stem's axis. The ball's rotation allows the flow or shutoff of media within the pipeline. When media is flowing, the ball valve is open; when the flow rate is at its maximum, the ball valve is fully open; when media flow is cut off, the ball valve is closed. Conventional ball valves often have a handle fixed to their stem, allowing anyone to change the valve's operating state by turning the handle. To prevent unauthorized changes to the valve's operating state, a ball valve with a lockable stem is required.

[0003] Chinese patent publication number CN206280599U discloses a locking valve, belonging to the field of valve technology. It addresses the problem of the locking function of existing locking valves being easily lost. The locking valve comprises a valve body, a valve core mounted within the valve body, a valve stem connected to the upper end of the valve core, a locking hole disposed at the upper end of the valve body, the upper end of the valve stem positioned within the locking hole, and a locking device disposed above the valve stem, capable of being secured within the locking hole. The locking device comprises a locking core and a locking sleeve. The locking sleeve comprises an upper cover, the lower surface of which has an annular wall defining a mounting cavity. The locking core comprises a rotating core positioned within the mounting cavity, the annular wall having a mounting hole (1) disposed therein, and a locking ball mounted within the mounting hole (1). The outer wall of the rotating core comprises a receiving groove. When the receiving groove is offset from the mounting hole (1), the inner side of the locking ball abuts against the outer wall of the rotating core. When the receiving groove is aligned with the mounting hole (1), the inner side of the locking ball is drawn into the receiving groove.

[0004] The locking device of the above-mentioned locking valve includes a lock core and a lock sleeve. The lock core includes a cylindrical rotating core. The lock sleeve includes a disc-shaped upper cover with a socket at the center and a lower cover with a U-shaped cross-section. The locking valve also includes an opening and closing wrench. One end of the opening and closing wrench is an unlocking end, and the other end of the opening and closing wrench is an opening and closing end. The structures of the locking device and the opening and closing wrench are complicated, which is not conducive to production and manufacturing. Utility Model Content

[0005] The purpose of the present invention is to solve the above problems in the prior art and to propose a built-in lock valve. The technical problem to be solved by the present invention is: how to simplify the structure of the lock valve.

[0006] The above-mentioned technical purpose of the present invention can be achieved through the following technical solutions: a built-in locking valve, including a valve body, a valve stem, a valve core and an unlocking cap, the valve core is rotatably arranged in the valve body, the valve stem is rotatably arranged in the valve body, and the valve core is connected to the valve stem, the outer side wall of the valve stem is provided with a receiving groove, a magnet and a spring are provided in the receiving groove, the inner side wall of the valve body is provided with a positioning groove, the spring is used to push a part of the magnet into the positioning groove, the side wall of the unlocking cap is provided with a magnet, the magnet and the magnet repel each other magnetically, the magnet is used to push the magnet away from the positioning groove, and the unlocking cap can drive the valve stem to rotate.

[0007] In the above-mentioned built-in locking valve, a limiting groove is provided on the inner side wall of the valve body, and a limiting rod is provided on the outer side wall of the valve stem, and the limiting rod extends into the limiting groove.

[0008] In the above-mentioned built-in locking valve, the positioning groove and the limiting groove are staggered along the length direction of the valve stem.

[0009] In the above-mentioned built-in locking valve, an accommodating groove is provided on the outer side wall of the valve stem, and a second spring is provided in the accommodating groove. The second spring is used to support the limiting rod.

[0010] In the above-mentioned built-in locking valve, an insert is provided in the unlocking cap, and a linkage groove is provided on the valve stem. The insert can be inserted into the linkage groove, and the linkage groove positions the insert circumferentially.

[0011] In the above-mentioned built-in locking valve, one end of the spring 1 is connected to the bottom of the accommodating groove, and the other end of the spring 1 is connected to the magnetic block 1.

[0012] In the above-mentioned built-in locking valve, one end of the second spring is connected to the bottom of the accommodating groove, and the other end of the second spring is connected to the limiting rod.

[0013] In the above-mentioned built-in locking valve, a card slot is provided on the valve body, a retaining spring is provided in the card slot, and an assembly slot is provided in the unlocking cap. After the unlocking cap is plugged into the valve body, the retaining spring enters the assembly slot and limits the unlocking cap and the valve body.

[0014] In the above-mentioned built-in locking valve, the limiting groove is annular and is opened along the circumference of the valve body.

[0015] In the above-mentioned built-in locking valve, there are two accommodating grooves and the two are arranged opposite to each other. Corresponding magnetic blocks and springs are arranged in the two accommodating grooves. There are two positioning grooves and the two are arranged opposite to each other. The two accommodating grooves correspond to the two positioning grooves respectively.

[0016] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0017] When in the locked state, spring 1 pushes a part of the magnet into the positioning groove, so that the accommodating groove and the positioning groove cooperate with magnet 1 to keep the valve stem and the valve body relatively stable, thereby realizing the positioning of the valve stem, that is, the valve stem cannot be rotated by external force. In the unlocked state, magnet 1 is pushed away from the positioning groove by magnet 2 on the unlocking cap, and the valve stem can be driven to rotate by the unlocking cap. It is only necessary to open a accommodating groove on the outer wall of the valve stem, arrange magnet 1 and spring 1 in the accommodating groove, open a positioning groove on the inner wall of the valve body, and equip it with an unlocking cap and magnet 2 to realize the locking and unlocking functions. The overall structure is simplified, which effectively reduces the manufacturing complexity, makes production more convenient, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the embodiment in the unlocked state;

[0019] Figure 2 It is a structural diagram of an embodiment;

[0020] Figure 3 It is a partial structural diagram of an embodiment;

[0021] Figure 4 It is a partial exploded view of an embodiment;

[0022] Figure 5 is a schematic cross-sectional view of a valve body in an embodiment;

[0023] Figure 6 Schematic diagram of the structure of the unlocking cap in the embodiment;

[0024] Figure 7 It is a cross-sectional view of the embodiment in the locked state;

[0025] Figure 8 It is a partial cross-sectional schematic diagram of an embodiment.

[0026] Figure numerals: 1, valve body; 2, valve stem; 3, valve core; 4, unlocking cap; 5, accommodating groove; 6, magnet one; 7, spring one; 8, positioning groove; 9, magnet two; 10, limiting groove; 11, limiting rod; 12, accommodating groove; 13, spring two; 14, insert; 15, linkage groove; 16, clamping groove; 17, assembly groove; 18, retaining spring. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] A built-in lock valve, such as Figures 1-8 As shown, it includes a valve body 1, a valve stem 2, a valve core 3 and an unlocking cap 4. The valve core 3 is rotatably set in the valve body 1, and the valve stem 2 is rotatably set in the valve body 1. The valve core 3 is connected to the valve stem 2, that is, rotating the valve stem 2 can drive the valve core 3 to rotate, and the rotation of the valve core 3 can control the on-off and flow rate of the water flow.

[0029] The outer wall of the valve stem 2 is provided with a receiving groove 5, in which a magnet 6 and a spring 7 are arranged, and the inner wall of the valve body 1 is provided with a positioning groove 8. It should be noted that in this embodiment, there are two receiving grooves 5 and the two are arranged opposite to each other, and corresponding magnets 6 and springs 7 are arranged in the two receiving grooves 5. There are two positioning grooves 8 and the two are arranged opposite to each other, and the two receiving grooves 5 correspond to the two positioning grooves 8 respectively.

[0030] Spring 17 is used to push part of magnet 16 into positioning groove 8. Specifically, one end of spring 17 is connected to the bottom of accommodating groove 5, and the other end of spring 17 is connected to magnet 16. Through the elastic force of spring 17, when accommodating groove 5 and positioning groove 8 are opposite to each other, magnet 16 is partially pushed into positioning groove 8. At this time, the other part of magnet 16 is located in accommodating groove 5. That is, magnet 16 is positioned by accommodating groove 5 and positioning groove 8. At this time, valve stem 2 and valve body 1 remain relatively stable, and valve stem 2 cannot rotate.

[0031] The side wall of the unlocking cap 4 is provided with a magnet 2 9, which magnetically repels magnet 1 6. Magnet 2 9 is used to push magnet 1 6 away from the positioning groove 8. It should be noted that in this embodiment, when unlocking, the unlocking cap 4 is sleeved on the outside of the valve body 1, and magnet 2 9 is opposite to magnet 1 6. The repulsive force of magnet 2 9 on magnet 1 6 pushes magnet 1 6 away from the positioning groove 8. At this time, magnet 1 6 is not restricted by the positioning groove 8, so the valve stem 2 can rotate.

[0032] The unlocking cap 4 can drive the valve stem 2 to rotate. Specifically, an insert block 14 is provided in the unlocking cap 4, and a linkage groove 15 is provided on the valve stem 2. The insert block 14 can be inserted into the linkage groove 15. The linkage groove 15 positions the insert block 14 circumferentially, that is, when the unlocking cap 4 is sleeved on the outside of the valve body 1, the insert block 14 is inserted into the linkage groove 15. When the operator rotates the unlocking cap 4, the unlocking cap 4 can drive the valve stem 2 to rotate through the cooperation between the linkage groove 15 and the insert block 14.

[0033] It should be further explained that in this embodiment, the plug block 14 and the linkage groove 15 are both wavy, that is, the plug block 14 is adapted to the linkage groove 15. Therefore, the placement of the unlocking cap 4 can be quickly completed according to the relative position relationship between the plug block 14 and the linkage groove 15 to ensure that the magnetic block 2 9 is opposite to the magnetic block 1 6, making the unlocking operation simpler and more convenient.

[0034] A limiting groove 10 is provided on the inner wall of the valve body 1, and a limiting rod 11 is provided on the outer wall of the valve stem 2. The limiting rod 11 extends into the limiting groove 10. A receiving groove 12 is provided on the outer wall of the valve stem 2. A spring 2 13 is provided in the receiving groove 12. The spring 2 13 is used to support the limiting rod 11. Specifically, one end of the spring 2 13 is connected to the bottom of the receiving groove 12, and the other end of the spring 2 13 is connected to the limiting rod 11, that is, through the elastic force of the spring 2 13, the limiting rod 11 always extends into the limiting groove 10.

[0035] It should be noted that the limiting groove 10 limits the limiting rod 11, thereby achieving the limitation of the valve stem 2, and because the limiting groove 10 is annular and the limiting groove 10 is opened along the circumference of the valve body 1, the circumferential limitation of the valve stem 2 is achieved, thereby achieving the limitation of the circumferential rotation angle of the valve core 3, so that the user can more accurately control the on-off and size of the water flow.

[0036] It should be noted that, in this embodiment, the circumferential rotation angle of the valve stem 2 is limited to 0-90 degrees by the cooperation between the limiting rod 11 and the limiting groove 10, so the circumferential rotation angle of the valve core 3 is also limited to 0-90 degrees.

[0037] The upper end surface of the valve stem 2 is flush with the upper surface of the valve body 1, which not only makes the overall structure more compact and the locked valve body 1 smaller, but also makes it difficult for other tools to apply external force to the valve stem 2 to rotate it, without the unlocking cap 4, and it is difficult to forcibly rotate the valve stem 2 using other tools. As another solution, the upper end surface of the valve stem 2 is lower than the upper surface of the valve body 1.

[0038] The positioning groove 8 and the limiting groove 10 are staggered along the length direction of the valve stem 2. The positioning groove 8 and the limiting groove 10 are staggered to avoid interference between the two, and also to avoid opening the positioning groove 8 and the limiting groove 10 at the same level of the valve body 1, thereby avoiding affecting the structural strength of the valve body 1.

[0039] In some embodiments, a card slot 16 is provided on the valve body 1, a retaining spring 18 is provided in the card slot 16, and an assembly groove 17 is provided in the unlocking cap 4. After the unlocking cap 4 is plugged into the valve body 1, the rebound retaining spring 18 will enter the assembly groove 17, so that the retaining spring 18 is located in the card slot 16 and the assembly groove 17, thereby limiting the unlocking cap 4 and the valve body 1. The utility model can be used as a conventional ball valve that can be opened and closed.

[0040] The working principle of this utility model is as follows:

[0041] When in the locked state, the elastic force of spring 17 pushes part of magnet 16 into the positioning groove 8. Part of magnet 16 is located in the positioning groove 8, and the other part of magnet 16 is located in the accommodating groove 5. The accommodating groove 5 and the positioning groove 8 position magnet 16. At this time, the valve stem 2 and the valve body 1 remain relatively stable, and the valve stem 2 cannot rotate; when unlocking is required, the insert block 14 is aligned with the linkage groove 15, and then the unlocking cap 4 is sleeved to the outside of the valve body 1, so that the insert block 14 is inserted into the linkage groove 15. At this time, the magnet 2 9 on the unlocking cap 4 pushes magnet 16 away from the positioning groove 8, and the unlocking cap 4 is rotated by external force. The unlocking cap 4 drives the valve stem 2 to rotate through the insert block 14 and the linkage groove 15.

[0042] The specific embodiments described in this article are merely examples of the spirit of the present invention; technicians in the technical field of the present invention may make various modifications or additions to the described specific embodiments or replace them in a similar manner, but they will not deviate from the spirit of the present invention or exceed the scope defined by the attached claims.

Claims

1. A built-in lock valve, characterized by: The invention comprises a valve body (1), a valve stem (2), a valve core (3) and an unlocking cap (4), wherein the valve core (3) is rotatably arranged in the valve body (1), the valve stem (2) is rotatably arranged in the valve body (1), and the valve core (3) is connected to the valve stem (2), the outer wall of the valve stem (2) is provided with a receiving groove (5), a magnet block 1 (6) and a spring 1 (7) are provided in the receiving groove (5), the inner wall of the valve body (1) is provided with a positioning groove (8), the spring 1 (7) is used to push the magnet block 1 (6) partially into the positioning groove (8), the side wall of the unlocking cap (4) is provided with a magnet block 2 (9), the magnet block 2 (9) and the magnet block 1 (6) are magnetically repelled, the magnet block 2 (9) is used to push the magnet block 1 (6) away from the positioning groove (8), and the unlocking cap (4) can drive the valve stem (2) to rotate.

2. The built-in lock valve according to claim 1, characterized in that: The inner side wall of the valve body (1) is provided with a limiting groove (10), and the outer side wall of the valve stem (2) is provided with a limiting rod (11), and the limiting rod (11) extends into the limiting groove (10).

3. The built-in lock valve according to claim 2, characterized in that: The positioning groove (8) and the limiting groove (10) are staggered and distributed along the length direction of the valve stem (2).

4. The built-in lock valve according to claim 2, characterized in that: An accommodating groove (12) is provided on the outer side wall of the valve stem (2), and a second spring (13) is provided in the accommodating groove (12). The second spring (13) is used to support the limiting rod (11).

5. The built-in lock valve according to claim 1, characterized in that: An insert block (14) is provided in the unlocking cap (4), and a linkage groove (15) is provided on the valve stem (2). The insert block (14) can be inserted into the linkage groove (15), and the linkage groove (15) circumferentially positions the insert block (14).

6. The built-in lock valve according to claim 1, characterized in that: One end of the spring 1 (7) is connected to the bottom of the accommodating groove (5), and the other end of the spring 1 (7) is connected to the magnetic block 1 (6).

7. The built-in lock valve according to claim 4, characterized in that: One end of the second spring (13) is connected to the bottom of the accommodating groove (12), and the other end of the second spring (13) is connected to the limiting rod (11).

8. The built-in lockshield valve according to any one of claims 1 to 7, characterized in that: The valve body (1) is provided with a card slot (16), a retaining spring (18) is provided in the card slot (16), and an assembly slot (17) is provided in the unlocking cap (4). After the unlocking cap (4) is plugged into the valve body (1), the retaining spring (18) enters the assembly slot (17) and limits the unlocking cap (4) and the valve body (1).

9. The built-in lockshield valve according to any one of claims 2 to 4, characterized in that: The limiting groove (10) is annular and is opened along the circumference of the valve body (1).

10. The built-in lockshield valve according to any one of claims 1 to 7, characterized in that: There are two receiving grooves (5) and the two receiving grooves are arranged opposite to each other. A corresponding magnetic block (6) and a spring (7) are arranged in each of the two receiving grooves (5). There are two positioning grooves (8) and the two positioning grooves (8) are arranged opposite to each other. The two receiving grooves (5) correspond to the two positioning grooves (8) respectively.

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