Valve capable of preventing mistaken opening

Abstract

The utility model relates to the technical field of valves, in particular to a mistaken opening prevention valve which comprises a valve body, the top of the valve body is connected with an end cover, a cover cap is arranged in the end cover, the bottom of the cover cap is fixedly connected with a guide shaft, and the top of the cover cap is fixedly connected with a grip. And the valve rod is rotationally connected into the valve body, the bottom of the valve rod is connected with an opening and closing piece, the opening and closing piece is rotationally arranged in the valve body, the valve rod is sleeved with a spring, the spring is located in the end cover, and the spring is located below the cover cap. According to the utility model, through the arrangement of the lifting pressing type grip, the grip and the valve rod can be separated from each other when the device is in a non-use state, so that the valve rod cannot be rotated even if the device touches the grip by mistake, the valve is effectively prevented from being opened or closed by mistake, and the use stability of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve which can prevent accidental opening. Background Art

[0002] Valves are control components in fluid delivery systems and have functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest shut-off valves to the various valves used in extremely complex automatic control systems.

[0003] Existing valves mainly rotate the opening and closing parts inside the valve body by rotating the handle outside the valve body, thereby achieving the on-off control of the valve. However, due to the influence of the length and other positions of the external handle, the operator may accidentally touch the handle when working near the valve, which may cause the handle to rotate and affect the on-off control of the valve. Utility Model Content

[0004] The utility model aims to provide a valve that prevents accidental opening, so as to solve the problem in the above background technology that an operator may accidentally touch the handle when working near the valve, thereby causing the handle to rotate.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve for preventing accidental opening, comprising:

[0006] A valve body, wherein the top of the valve body is connected to an end cover, and a cover cap is arranged inside the end cover, the bottom of the cover cap is fixedly connected to a guide shaft, and the top of the cover cap is fixedly connected to a handle;

[0007] The valve stem is rotatably connected to the inside of the valve body, and the bottom of the valve stem is connected to an opening and closing member, and the opening and closing member is rotatably arranged inside the valve body. The outside of the valve stem is sleeved with a spring, and the spring is inside the end cover, and the spring is below the cover cap.

[0008] Preferably, a rotation groove is provided on the end cover, and a handle passes through the interior of the rotation groove. A limiting groove is provided on the handle, and the limiting groove fits with the outer wall of the end cover.

[0009] Preferably, a guide groove is provided at the center of the upper surface of the valve stem, and a guide shaft is slidably inserted into the interior of the guide groove, and the bottom of the guide shaft is in a step shape.

[0010] Preferably, the end of the handle that contacts the cap is circular in structure, and the circular outer walls of the cap and the handle fit with the inner wall of the end cover, and a soft rubber sleeve is provided at the end of the handle away from the cap.

[0011] Preferably, the outer wall of the valve stem is connected to the valve body in a rotational sealing manner via a shaft seal, and the top cross-section of the valve stem is a hexagonal structure, and the hexagonal structure is matched with the internal groove of the cap.

[0012] Preferably, the cross section of the end cover is L-shaped, and positioning holes are evenly opened on the horizontal end of the end cover, threaded holes are opened at the corresponding positioning holes of the valve body, and countersunk screws are passed through the positioning holes to the inside of the threaded holes.

[0013] Preferably, the outer diameter of the cap is equal to the inner diameter of the end cover, the height of the rotating groove is equal to the height of the cap, and when the upper surface of the handle contacts the inner wall of the end cover, the lower surface of the cap is above the upper surface of the valve stem.

[0014] Compared with the prior art, the beneficial effect of the utility model is that the utility model provides a liftable and pressable handle so that when the device is not in use, the handle and the valve stem are separated from each other, so that even if the device accidentally touches the handle, the valve stem will not be caused to rotate, thereby effectively avoiding the accidental opening or closing of the valve and greatly improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0016] Figure 2 For the utility model Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0017] Figure 3 It is a schematic diagram of the partial explosion structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the explosion structure of the handle of the utility model;

[0019] Figure 5 It is a schematic diagram of the overall structure of the utility model.

[0020] In the figure: 1. valve body; 2. end cover; 21. rotating groove; 3. cover cap; 31. guide shaft; 4. handle; 41. limit groove; 6. valve stem; 61. guide groove; 7. spring; 8. opening and closing part; 9. shaft sealing part. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides an embodiment: a valve for preventing accidental opening, comprising:

[0023] A valve body 1, the top of the valve body 1 is connected with an end cover 2, and a cover cap 3 is arranged inside the end cover 2, the bottom of the cover cap 3 is fixedly connected with a guide shaft 31, and the top of the cover cap 3 is fixedly connected with a handle 4;

[0024] The valve stem 6 is rotatably connected to the inside of the valve body 1, and the bottom of the valve stem 6 is connected to an opening and closing member 8, and the opening and closing member 8 is rotatably arranged inside the valve body 1. The outside of the valve stem 6 is sleeved with a spring 7, and the spring 7 is inside the end cover 2, and the spring 7 is below the cap 3. Through the mutual cooperation between the cap 3 and the valve stem 6, when the handle 4 presses the cap 3, the valve stem 6 can be sleeved, so that the valve stem 6 is driven to rotate by the rotation of the handle 4, and the opening and closing control of the opening and closing member 8 is further realized, and when the pressure on the handle 4 is released, the cap 3 rises due to the elasticity of the spring 7, thereby releasing the limit sleeve on the valve stem 6, so that in this state, it can effectively prevent it from accidentally opening or closing.

[0025] Furthermore, a rotation groove 21 is provided on the end cover 2, and a handle 4 is passed through the interior of the rotation groove 21. A limit groove 41 is provided on the handle 4, and the limit groove 41 fits with the outer wall of the end cover 2. The stability of the rotation of the handle 4 is ensured through its limited rotation contact. At the same time, the opening of the rotation groove 21 can play an auxiliary limiting role for the handle 4. At the same time, the auxiliary limiting of the cap 3 and the handle 4 can ensure the precise docking of the cap 3 and the valve stem 6.

[0026] Furthermore, a guide groove 61 is provided at the center of the upper surface of the valve stem 6, and a guide shaft 31 is slidably inserted inside the guide groove 61. The bottom of the guide shaft 31 is stepped. Through the sliding insertion of the guide shaft 31 and the guide groove 61, an auxiliary guiding effect is further played on the docking of the cap 3 and the valve stem 6, thereby ensuring their coaxiality.

[0027] Furthermore, the end of the handle 4 that contacts the cap 3 is circular, and the circular outer walls of the cap 3 and the handle 4 fit together with the inner wall of the end cover 2. A soft rubber sleeve is provided at the end of the handle 4 away from the cap 3. The provision of the soft rubber sleeve improves the comfort of contact with the hand.

[0028] Furthermore, the outer wall of the valve stem 6 is rotationally sealed with the valve body 1 via the shaft seal 9. The top cross-section of the valve stem 6 is a hexagonal structure, and the hexagonal structure is adapted to the internal groove of the cap 3. Through the hexagonal limiting plug-in, it is ensured that the rotation of the cap 3 can drive the valve stem 6 to rotate.

[0029] Furthermore, the cross section of the end cover 2 is L-shaped, and positioning holes are evenly opened on the horizontal end of the end cover 2. The valve body 1 is opened with threaded holes corresponding to the positioning holes, and countersunk screws are passed through the positioning holes to the inside of the threaded holes.

[0030] Furthermore, the outer diameter of the cap 3 is equal to the inner diameter of the end cover 2, the height of the rotating groove 21 is equal to the height of the cap 3, and when the upper surface of the handle 4 contacts the inner wall of the end cover 2, the lower surface of the cap 3 is above the upper surface of the valve stem 6.

[0031] Working principle: the valve body 1 and the opening and closing member 8 used in this application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be repeated here. When the utility model is in use, the device is first assembled, and in the normal state of the device, due to the elasticity of the spring 7, the cap 3 is at the top. At this time, even if the handle 4 is colliding from the outside, the opening and closing member 8 will not be caused to rotate and open. When the opening and closing member 8 needs to be opened and closed, the handle 4 is pressed down by hand, which further drives the cap 3 to be pressed down. When the cap 3 and the valve stem 6 are plugged into each other, the handle 4 can be rotated, and the valve stem 6 can be driven to rotate through the cap 3, thereby completing the rotation adjustment of the opening and closing member 8.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A valve that prevents accidental opening, characterized in that: include: A valve body (1), wherein the top of the valve body (1) is connected to an end cover (2), and a cover cap (3) is arranged inside the end cover (2), the bottom of the cover cap (3) is fixedly connected to a guide shaft (31), and the top of the cover cap (3) is fixedly connected to a handle (4); A valve stem (6), wherein the valve stem (6) is rotatably connected to the interior of the valve body (1), and the bottom of the valve stem (6) is connected to an opening and closing member (8), and the opening and closing member (8) is rotatably arranged inside the valve body (1), and a spring (7) is sleeved on the outside of the valve stem (6), and the spring (7) is located inside the end cover (2), and the spring (7) is located below the cover cap (3).

2. The anti-mis-opening valve according to claim 1, characterized in that: The end cover (2) is provided with a rotation groove (21), and a handle (4) is passed through the rotation groove (21). The handle (4) is provided with a limit groove (41), and the limit groove (41) and the outer wall of the end cover (2) are mutually fitted.

3. The anti-mis-opening valve according to claim 1, characterized in that: A guide groove (61) is provided at the center of the upper surface of the valve stem (6), and a guide shaft (31) is slidably inserted into the interior of the guide groove (61), and the bottom of the guide shaft (31) is in a step shape.

4. The anti-mis-opening valve according to claim 1, characterized in that: The end of the handle (4) that contacts the cover cap (3) is of a circular structure, and the circular outer walls of the cover cap (3) and the handle (4) are in contact with the inner wall of the end cover (2). A soft rubber sleeve is provided at the end of the handle (4) away from the cover cap (3).

5. The anti-mis-opening valve according to claim 1, characterized in that: The outer wall of the valve stem (6) is connected to the valve body (1) in a rotational sealing manner via a shaft seal (9); the top cross-section of the valve stem (6) is a hexagonal structure, and the hexagonal structure is compatible with the internal groove of the cover cap (3).

6. The anti-mis-opening valve according to claim 5, characterized in that: The cross section of the end cover (2) is L-shaped, and positioning holes are evenly arranged on the horizontal end of the end cover (2). The valve body (1) is provided with threaded holes corresponding to the positioning holes, and countersunk screws are inserted into the positioning holes to the inside of the threaded holes.

7. The anti-mis-opening valve according to claim 2, characterized in that: The outer diameter of the cap (3) is equal to the inner diameter of the end cover (2), the height of the rotation groove (21) is equal to the height of the cap (3), and when the upper surface of the handle (4) contacts the inner wall of the end cover (2), the lower surface of the cap (3) is located above the upper surface of the valve stem (6).

Images