Stop valve body capable of emergency braking

Abstract

The utility model discloses a stop valve body capable of emergency braking, and relates to the field of stop valve devices. The stop valve body capable of emergency braking comprises a stop valve main body and a valve cover arranged at the top of the stop valve main body, and a valve rod is arranged at the top of the valve cover; a fixing mechanism used for fixing the valve rod is arranged at the top of the valve cover and comprises an arc-shaped plate arranged on the peripheral wall of the valve rod, and the arc-shaped plate is used for fixing the valve rod; clamping plates are arranged on the side walls of the arc-shaped plates and used for fixing the two arc-shaped plates. According to the stop valve body capable of emergency braking, the fixing mechanism is arranged on the valve cover of the stop valve, two sets of arc-shaped plates are kneaded, fixing is conducted through a clamping plate and a buckling rod, at the moment, the two sets of arc-shaped plates can clamp and fix the valve rod, the stability of the valve rod can be further improved, and the situation that the valve rod slides and rotates at will is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cut-off valves, in particular to a cut-off valve body capable of emergency braking. Background Art

[0002] The emergency shut-off valve is also called the safety shut-off valve. It means that in the event of an emergency, the valve will be quickly closed or opened to avoid accidents. The emergency shut-off valve has excellent technical performance, low load loss and high reliability, and is widely used in gas supply network systems and residential safety facilities.

[0003] The valve stem of the existing cut-off valve is prone to wear after long-term use, which can cause the valve stem to slip, and easily cause the problem of reduced sealing when the valve stem is cut off and closed;

[0004] The reason for this problem is that the current shut-off valves on water pipes mainly shut off and close the valve channel inside the valve by rotating the valve stem. Since the valve stem is usually threaded through the shut-off valve, and the valve stem placed inside the valve is in contact with the water, the valve stem is prone to wear after long-term use, resulting in valve stem slippage. At this time, the impact force of the water in the valve is likely to cause the valve stem to move, resulting in reduced sealing when the valve stem is cut off and closed. In view of the shortcomings of the existing technology, we propose a shut-off valve body that can be emergency braked to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a shut-off valve body that can be emergency braked, which solves the problem that the valve stem on the current shut-off valve is prone to wear after long-term use, thereby causing the valve stem to slip, which easily causes the sealing performance to decrease when the valve stem is cut and closed.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a shut-off valve body capable of emergency braking, comprising a shut-off valve body and a valve cover arranged on the top of the shut-off valve body, wherein a valve stem is arranged on the top of the valve cover;

[0007] A fixing mechanism for fixing the valve stem is provided on the top of the valve cover, and the fixing mechanism includes:

[0008] An arc plate, which is arranged on the outer peripheral wall of the valve stem, and is used to fix the valve stem;

[0009] The clamping plate is arranged on the side wall of the arc-shaped plate, and is used to fix the two groups of arc-shaped plates.

[0010] Preferably, the top of the valve cover is fixedly connected to a valve ring, and the top of the valve cover and the bottom of the valve ring are both provided with sliding grooves.

[0011] Preferably, both upper and lower ends of the arc-shaped plate are fixedly connected with sliders, and the sliders are slidably connected inside the slide grooves.

[0012] Preferably, the fixing mechanism further comprises:

[0013] A buckle rod, which is fixedly connected to the side wall of another set of arc-shaped plates, and is used to fix the clamping plate;

[0014] A spring is arranged on the side wall of the slider, and the spring is used to reset the slider.

[0015] Preferably, the side wall of the arc-shaped plate is fixedly connected with a shaft rod, the clamping plate is rotatably connected to the outer peripheral wall of the shaft rod, and the end side of the clamping plate is clamped on the inner side of the buckle rod on another group of arc-shaped plates.

[0016] Preferably, the spring is fixedly connected to the side wall of the slide block, and the end of the spring is fixedly connected to the inside of the slide groove.

[0017] Preferably, a valve core is fixedly connected to the interior of the shut-off valve body, a valve flap is fixedly connected to the bottom of the valve stem, the positions of the valve core and the valve flap correspond to each other up and down, and flange rings are provided on the inner side of the valve core and the outer peripheral wall of the valve flap.

[0018] The utility model discloses a shut-off valve body capable of emergency braking, which has the following beneficial effects: the shut-off valve body capable of emergency braking is achieved by arranging a fixing mechanism on the valve cover of the shut-off valve, pinching two groups of arc plates, and fixing them through a clamping plate and a buckle rod. At this time, the two groups of arc plates will clamp and fix the valve stem, which can further increase the stability of the valve stem and avoid the situation where the valve stem slips and rotates arbitrarily. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of the main body of the cut-off valve of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the valve stem of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the fixing mechanism of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the curved plate of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the flange ring of the utility model.

[0025] In the figure: 1. shut-off valve body; 101. valve core; 102. flange ring; 2. valve cover; 201. valve ring; 202. slide groove; 3. valve stem; 301. valve disc; 4. fixing mechanism; 401. arc plate; 402. clamping plate; 403. shaft rod; 404. buckle rod; 405. slider; 406. spring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0027] The embodiment of the present application provides a shut-off valve body that can be emergency braked, thereby solving the problem that the valve stem on the current shut-off valve is prone to wear after long-term use, which can cause the valve stem to slip and easily cause the sealing performance to decrease when the valve stem is cut and closed.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] The utility model embodiment discloses a cut-off valve body capable of emergency braking.

[0030] According to the attached Figure 1-5 As shown, a shut-off valve body capable of emergency braking comprises a shut-off valve body 1 and a valve cover 2 arranged on the top of the shut-off valve body 1, wherein a valve stem 3 is arranged on the top of the valve cover 2;

[0031] The specific functions of the cut-off valve body 1 can refer to the stainless steel flange cut-off valve of model J41W.

[0032] A fixing mechanism 4 for fixing the valve stem 3 is provided on the top of the valve cover 2. The fixing mechanism 4 includes an arc plate 401 arranged on the outer peripheral wall of the valve stem 3, and the arc plate 401 is used to fix the valve stem 3; a clamping plate 402 is provided on the side wall of the arc plate 401, and the clamping plate 402 is used to fix the two groups of arc plates 401. A thread compatible with the valve stem 3 is provided on the inner side of the arc plate 401, so as to clamp and fix the valve stem 3 more tightly.

[0033] The top of the valve cover 2 is fixedly connected with a valve ring 201 , and the top of the valve cover 2 and the bottom of the valve ring 201 are both provided with sliding grooves 202 .

[0034] The upper and lower ends of the arc plate 401 are fixedly connected with sliders 405 , and the sliders 405 are slidably connected inside the slide groove 202 .

[0035] The fixing mechanism 4 also includes a buckle rod 404 fixedly connected to the side wall of another group of arc-shaped plates 401, and the buckle rod 404 is used to fix the clamping plate 402; the side wall of the slider 405 is provided with a spring 406, and the spring 406 is used to reset the slider 405.

[0036] The side wall of the arc plate 401 is fixedly connected with the shaft rod 403, and the clamping plate 402 is rotatably connected to the outer peripheral wall of the shaft rod 403. The end side of the clamping plate 402 is clamped on the inner side of the buckle rod 404 on the other group of arc plates 401. By pinching the two groups of arc plates 401 and clamping the clamping plate 402 on one group of arc plates 401 on the buckle rod 404 of the other group of arc plates 401, the two groups of arc plates 401 will clamp and fix the valve stem 3 to avoid the valve stem 3 from slipping and rotating.

[0037] The spring 406 is fixedly connected to the side wall of the slider 405, and the end of the spring 406 is fixedly connected to the inside of the slide groove 202. By moving the clamping plate 402 on one group of arc plates 401 out of the buckle rod 404 on the other group of arc plates 401, the two groups of arc plates 401 will be moved to both sides by the pulling force of the spring 406, and the valve stem 3 can be rotated at this time.

[0038] A valve core 101 is fixedly connected to the inside of the cut-off valve body 1, and a valve flap 301 is fixedly connected to the bottom of the valve stem 3. The positions of the valve core 101 and the valve flap 301 correspond to each other up and down. Flange rings 102 are provided on the inner side of the valve core 101 and the outer peripheral wall of the valve flap 301. The flange ring 102 can increase the tightness between the valve stem 3 and the valve core 101.

[0039] When the utility model is in use, when it is necessary to cut off the valve core 101 inside the cut-off valve body 1, the valve stem 3 is rotated downward until the valve flap 301 can be inserted into the valve core 101 for sealing and cutting, and then the two groups of arc plates 401 are kneaded, and the clamping plate 402 on one group of arc plates 401 is clamped on the buckle rod 404 of the other group of arc plates 401. At this time, the two groups of arc plates 401 will clamp and fix the valve stem 3.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A shut-off valve body capable of emergency braking, comprising a shut-off valve body (1) and a valve cover (2) arranged on the top of the shut-off valve body (1), wherein a valve stem (3) is arranged on the top of the valve cover (2); It is characterized in that A fixing mechanism (4) for fixing the valve stem (3) is provided on the top of the valve cover (2), and the fixing mechanism (4) comprises: An arc-shaped plate (401) arranged on the outer peripheral wall of the valve stem (3), the arc-shaped plate (401) being used to fix the valve stem (3); A clamping plate (402) is arranged on the side wall of the arc-shaped plate (401), and the clamping plate (402) is used to fix the two groups of arc-shaped plates (401).

2. A shut-off valve body capable of emergency braking according to claim 1, characterized in that: The top of the valve cover (2) is fixedly connected to a valve ring (201), and a sliding groove (202) is provided on the top of the valve cover (2) and the bottom of the valve ring (201).

3. A shut-off valve body capable of emergency braking according to claim 1, characterized in that: The upper and lower ends of the arc-shaped plate (401) are both fixedly connected with sliders (405), and the sliders (405) are slidably connected inside the slide groove (202).

4. A shut-off valve body capable of emergency braking according to claim 1, characterized in that: The fixing mechanism (4) further comprises: A buckle rod (404) fixedly connected to the side wall of another set of arc-shaped plates (401), the buckle rod (404) being used to fix the clamping plate (402); A spring (406) is arranged on a side wall of the slider (405), and the spring (406) is used to reset the slider (405).

5. The shut-off valve body capable of emergency braking according to claim 1, characterized in that: The side wall of the arc-shaped plate (401) is fixedly connected to a shaft (403), the clamping plate (402) is rotatably connected to the outer peripheral wall of the shaft (403), and the end side of the clamping plate (402) is clamped to the inner side of a buckle rod (404) on another set of arc-shaped plates (401).

6. A shut-off valve body capable of emergency braking according to claim 4, characterized in that: The spring (406) is fixedly connected to the side wall of the sliding block (405), and the end of the spring (406) is fixedly connected to the inside of the sliding groove (202).

7. The shut-off valve body capable of emergency braking according to claim 1, characterized in that: A valve core (101) is fixedly connected to the interior of the shut-off valve body (1), a valve flap (301) is fixedly connected to the bottom of the valve stem (3), the valve core (101) and the valve flap (301) are located in corresponding positions, and flange rings (102) are provided on the inner side of the valve core (101) and the outer peripheral wall of the valve flap (301).

Images