Stop structure of low-temperature high-pressure stop valve

Abstract

The utility model discloses a cut-off structure of a low-temperature high-pressure cut-off valve, which relates to the field of high-pressure cut-off valves and comprises a valve body, a valve rod is arranged in the valve body, a valve core is arranged at the bottom end of the valve rod, a fixing frame is arranged on the outer wall of the valve rod, and an adjusting screw rod is arranged on the top wall of the fixing frame. According to the scheme, through cooperation of the valve body, the valve rod, the valve element and other devices, the device can conveniently drive the valve element to ascend and descend, the valve element is driven to move in a more labor-saving mode, opening and closing operation of the high-pressure valve is facilitated, and quick and labor-saving cut-off operation is facilitated; and through cooperation of a rotating wheel, a first supporting rod, a second supporting rod and other devices, the adjusting frame can be conveniently prevented from deflecting, the adjusting frame can be conveniently lifted and moved, the second supporting rod can be conveniently driven to move, and follow-up stopping operation is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure globe valves, and particularly relates to a cut-off structure of a cryogenic high-pressure globe valve. Background Art

[0002] A globe valve, also called a stop valve, is one of the most widely used valves. It is widely popular because of the small friction between the sealing surfaces during the opening and closing process, relatively durable, small opening height, easy to manufacture, convenient to maintain, and applicable not only to medium and low pressures but also to high pressures. In the prior art, the valve inside the device is driven to achieve the cut-off effect by rotating the manual wheel that can rotate at the top of the device. Due to the pressure of the high-pressure valve, it is difficult for the valve core to move. When cutting off, a large force is required to rotate the adjusting screw to drive the valve core to move for cutting off, resulting in difficult and quick cut-off operations. For this reason, we propose a cut-off structure of a cryogenic high-pressure globe valve. Content of the Utility Model

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a cut-off structure of a cryogenic high-pressure globe valve, which effectively solves the problem that due to the pressure of the high-pressure valve, it is difficult for the valve core to move, and a large force is required to rotate the manual wheel to drive the valve core to move for cutting off during cut-off, resulting in difficult and quick cut-off operations.

[0004] To achieve the above object, the utility model provides the following technical solution: A cut-off structure of a cryogenic high-pressure globe valve, including a valve body. A valve stem is arranged inside the valve body. A valve core is arranged at the bottom end of the valve stem. A fixing frame is arranged on the outer wall of the valve stem. An adjusting screw is arranged on the top wall of the fixing frame. An adjusting frame is arranged at the bottom end of the adjusting screw. Link rods are arranged on both the left and right sides of the top wall of the valve stem. Support frames are arranged on both the left and right sides of the bottom wall of the inner cavity of the fixing frame. First support rods are arranged on both the front and rear side walls of the inner cavity of the support frame. Support grooves are formed on the front side walls of the link rods. The first support rods are located inside the support grooves. Second support rods are arranged on the left and right sides of both the front and rear side walls of the inner cavity of the adjusting frame. Adjusting grooves are formed on the left and right sides of the front side walls of the link rods. The second support rods are located inside the adjusting grooves.

[0005] Preferably, sliding grooves are formed on both the left and right side walls of the inner cavity of the fixing frame, and the adjusting frame is located on the inner walls of the sliding grooves.

[0006] Preferably, runners are arranged on the outer walls of the first support rods and the second support rods, and the runners are respectively located inside the support grooves and the adjusting grooves.

[0007] Preferably, a hand wheel is arranged at the top end of the adjusting screw. An anti-slip sleeve is arranged on the outer wall of the hand wheel. A hexagonal block is arranged on the top wall of the hand wheel.

[0008] Preferably, a heating ring is provided on the top wall of the inner cavity of the fixing bracket, and the valve stem is located on the inner wall of the heating ring.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. For the cut-off structure of the high-pressure stop valve, by cooperating devices such as the valve body, valve stem, and valve core, the device can easily drive the valve core to move up and down, more labor-saving to drive the valve core to move, which is beneficial for the high-pressure valve to perform opening and closing operations, and is convenient for quick and labor-saving cut-off operations;

[0011] 2. For the cut-off structure of the high-pressure stop valve, by cooperating devices such as the runner, the first support rod, and the second support rod, the device can easily prevent the adjusting frame from deflecting, which is beneficial for the adjusting frame to move up and down, convenient for driving the second support rod to move, and beneficial for subsequent cut-off operations;

[0012] 3. For the cut-off structure of the high-pressure stop valve, by cooperating devices such as the handwheel, the hexagonal block, and the adjusting screw, the device can easily drive the adjusting screw to rotate. It is convenient to clamp and rotate the hexagonal block with a wrench, convenient to twist with the help of a wrench, and more labor-saving for cut-off operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model.

[0014] In the drawings:

[0015] Figure 1 is a schematic structural diagram of the cut-off structure of the high-pressure stop valve of the present utility model;

[0016] Figure 2 is a schematic cross-sectional structure diagram of the fixing bracket of the present utility model;

[0017] Figure 3 is the present utility model Figure 2 partial enlarged view in;

[0018] In the figure: 100, valve body; 101, valve stem; 102, valve core; 103, fixing bracket; 104, adjusting screw; 105, adjusting frame; 106, connecting rod; 107, support frame; 108, first support rod; 109, second support rod; 110, runner; 111, handwheel; 112, hexagonal block; 113, heating ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] It is given by Figure 1 , Figure 2 and Figure 3 The cut-off structure of the low-temperature high-pressure stop valve of the present utility model. A valve stem 101 is slidably connected inside a valve body 100. The valve stem 101 facilitates driving a valve core 102 to move. The bottom end of the valve stem 101 is fixedly connected to the valve core 102. The valve core 102 facilitates cutting off the liquid. A fixing frame 103 is slidably connected to the outer wall of the valve stem 101. The fixing frame 103 facilitates rotating an adjusting screw 104. The fixing frame 103 is fixedly installed on the top wall of the valve body 100. An adjusting screw 104 is screwed on the top wall of the fixing frame 103. The adjusting screw 104 facilitates driving an adjusting frame 105 to move. The bottom end of the adjusting screw 104 is rotatably connected to the adjusting frame 105. The adjusting frame 105 facilitates driving a connecting rod 106 to rotate. The left and right sides of the top wall of the valve stem 101 are both rotatably connected to the connecting rod 106. The connecting rod 106 facilitates driving the valve stem 101 to move up and down. The left and right sides of the bottom wall of the inner cavity of the fixing frame 103 are both fixedly connected to a support frame 107. The support frame 107 facilitates driving a first support rod 108 to support. The front and rear side walls of the inner cavity of the support frame 107 are both fixedly connected to the first support rod 108. The first support rod 108 facilitates supporting the connecting rod 106. Support grooves are provided on the front side walls of the connecting rods 106. The first support rod 108 is located inside the support grooves. The left and right sides of the front and rear side walls of the inner cavity of the adjusting frame 105 are both fixedly connected to a second support rod 109. The second support rod 109 facilitates driving the connecting rod 106 to rotate. Adjusting grooves are provided on the left and right sides of the front side walls of the connecting rods 106. The second support rod 109 is located inside the adjusting grooves.

[0021] In this embodiment: The fixing frame 103 is installed on the valve body 100, and its valve core 102 is located in the inner cavity of the valve body 100. By rotating the adjusting screw 104, the adjusting frame 105 is driven to move up and down. By the adjusting frame 105, the second support rod 109 is driven to move. By the second support rod 109, the connecting rod 106 is driven to rotate. The rotating connecting rod 106 is supported by the first support rod 108. Using the lever principle, the valve rod 101 is driven to move by the connecting rod 106, facilitating the lifting adjustment of the valve rod 101. Through the valve rod 101, it is convenient to drive the valve core 102 to move up and down, enabling the device to easily drive the valve core 102 to move up and down, driving the valve core 102 more labor - saving, which is beneficial for the opening and closing operation of the high - pressure valve and convenient for quick and labor - saving cut - off operation.

[0022] Chute grooves are provided on the left and right side walls of the inner cavity of the fixing frame 103, and the adjusting frame 105 is located on the inner wall of the chute groove.

[0023] In this embodiment: By providing the chute grooves, it is convenient to limit and guide the movement of the adjusting frame 105, preventing the adjusting frame 105 from deflecting, which is beneficial for the up - and - down movement of the adjusting frame 105, facilitating the driving of the second support rod 109 to move, and is conducive to subsequent cut - off operations.

[0024] Rotating wheels 110 are rotatably connected to the outer walls of the first support rod 108 and the second support rod 109, and the rotating wheels 110 are respectively located in the inner cavities of the support groove and the adjustment groove.

[0025] In this embodiment: By the rotating wheels 110, it is convenient for rolling, preventing wear between the first support rod 108, the second support rod 109 and the connecting rod 106, which is beneficial for improving the service life of the device and facilitating cut - off operations.

[0026] The top end of the adjusting screw 104 is fixedly connected with a hand wheel 111. By the hand wheel 111, it is convenient to drive the adjusting screw 104 to rotate. An anti - slip sleeve is provided on the outer wall of the hand wheel 111, and a hexagonal block 112 is provided on the top wall of the hand wheel 111.

[0027] In this embodiment: By rotating the hand wheel 111, it is convenient to drive the adjusting screw 104 to rotate. The anti - slip sleeve is provided on the outer wall of the hand wheel 111 to prevent slipping when holding it. By clamping and turning the hexagonal block 112 with a wrench, it is convenient to turn it with the help of the wrench, facilitating more labor - saving cut - off operations.

[0028] The top wall of the inner cavity of the fixing frame 103 is fixedly connected with a heating ring 113. By the heating ring 113, it is convenient to heat the valve rod 101. A heating wire is provided in the inner cavity of the heating ring 113, and power is connected for heating operation. The valve rod 101 is located on the inner wall of the heating ring 113.

[0029] In this embodiment, the heating ring 113 facilitates power-on heating, which is convenient for heating the valve stem 101. Water vapor in the air condenses at the joint of the valve stem 101 and the valve body 100, making it difficult for the worker to rotate the valve stem 101. After heating, the valve stem 101 facilitates melting the condensed water vapor, which is convenient for subsequent cut-off operations.

Claims

1. The cut-off structure of a low-temperature and high-pressure stop valve, comprising a valve body (100), characterized in that: Inside the valve body (100), there is a valve stem (101). At the bottom end of the valve stem (101), there is a valve core (102). On the outer wall of the valve stem (101), there is a fixing frame (103). On the top wall of the fixing frame (103), there is an adjusting screw rod (104). At the bottom end of the adjusting screw rod (104), there is an adjusting frame (105). On the left and right sides of the top wall of the valve stem (101), there are connecting rods (106). On the left and right sides of the bottom wall of the inner cavity of the fixing frame (103), there are support frames (107). On the front and rear side walls of the inner cavity of the support frame (107), there are first support rods (108). On the front side walls of the connecting rods (106), there are support grooves. The first support rods (108) are located in the inner cavities of the support grooves. On the left and right sides of the front and rear side walls of the inner cavity of the adjusting frame (105), there are second support rods (109). On the left and right sides of the front side walls of the connecting rods (106), there are adjusting grooves. The second support rods (109) are located in the inner cavities of the adjusting grooves.

2. The cut-off structure of the cryogenic high-pressure stop valve according to claim 1, characterized in that: On the left and right side walls of the inner cavity of the fixing frame (103), there are sliding grooves. The adjusting frame (105) is located on the inner walls of the sliding grooves.

3. The cutoff structure of the cryogenic high-pressure stop valve according to claim 1, wherein: On the outer walls of the first support rods (108) and the second support rods (109), there are rotating wheels (110). The rotating wheels (110) are respectively located in the inner cavities of the support grooves and the adjusting grooves.

4. The cut-off structure of the cryogenic high-pressure stop valve according to claim 1, characterized in that: At the top end of the adjusting screw rod (104), there is a hand wheel (111). On the outer wall of the hand wheel (111), there is an anti-slip sleeve. On the top wall of the hand wheel (111), there is a hexagonal block (112).

5. The cutoff structure of the cryogenic high-pressure globe valve according to claim 1, characterized in that: On the top wall of the inner cavity of the fixing frame (103), there is a heating ring (113). The valve stem (101) is located on the inner wall of the heating ring (113).

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