Anti-leakage self-locking valve

Abstract

The utility model discloses an anti-leakage self-sealing valve, and belongs to the technical field of valves. Comprising a valve body, a valve plate, a valve rod and a first hand wheel. Side sealing plates are arranged on the two sides of the valve plate in a sliding mode respectively, end sealing plates are arranged at the two ends of the valve plate respectively, the ends, located in the valve plate, of the side sealing plates and the end sealing plates are arc faces inclining downwards, and cones controlling the side sealing plates and the end sealing plates to move outwards are arranged in the middles of the four arc faces. A cone is arranged at the lower end of the valve rod, the cone is controlled to move up and down through a threaded rod penetrating through the valve rod and the first hand wheel, a second hand wheel is arranged at the upper end of the threaded rod, side sealing plate grooves are formed in the two sides of a valve groove, allowing the valve plate to ascend, of the valve body respectively, and end sealing plate grooves are formed in the two ends of the valve groove respectively. The cones are used for controlling the moving side sealing plates and the moving end sealing plates, so that the side sealing plates and the end sealing plates can be clamped to the ends of the side sealing plate grooves and the end sealing plate grooves, and when the first hand wheel is touched by mistake, the valve plate can be prevented from moving.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an anti-leakage self-sealing valve. Background Art

[0002] Valves are key components in fluid control systems and play a core role in regulating and controlling the flow direction, pressure and flow of media such as liquids, gases and steam to achieve opening and closing. Their wide variety of designs meet various needs in a wide range of industries and daily life, from simple stop valves to complex regulating valves, such as gate valves, ball valves, butterfly valves, check valves, safety valves, pressure reducing valves, etc., each with its own specialty. The materials include cast iron, steel, copper, stainless steel and even plastic, which can meet the requirements of harsh environments such as corrosion resistance, high temperature and high pressure, and low temperature. Valves are driven by manual knobs, electric, pneumatic and hydraulic actuators to achieve remote automatic control and improve system efficiency and safety. Their precise blocking and durability are the key to evaluating the quality, which is related to system stability, energy efficiency and safety. Therefore, they are indispensable in the fields of nuclear power, chemical industry, petroleum, water treatment, medicine, aerospace, etc. The innovation of valve design and manufacturing technology continues to promote the process of industrial automation and intelligentization.

[0003] At present, after the valve is used many times, the valve stem, valve plate and valve body will be worn and loosened, and it is easy to be misoperated when touched again, which affects the use of the valve, and the medium in the pipeline is easy to leak from the gap between the valve stem, valve plate and valve body. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing valve is easy to be misoperated after being used for many times, and the misoperation is easy to move the valve plate.

[0005] In order to solve the above problems, the utility model proposes: an anti-leakage self-locking valve, comprising a valve body 1, a valve plate 2 arranged inside the valve body, a valve stem 3 connected to the valve plate through a bearing 5, and a hand wheel 4 connected to the upper end of the valve stem; side blocking plates 201 are slidably provided on both sides of the valve plate 2, and end blocking plates 202 are provided at both ends; one end of the side blocking plate 201 and the end blocking plate 202 located inside the valve plate 2 is an arc surface inclined downward, and a cone 203 for controlling the side blocking plate 201 and the end blocking plate 202 to move outward is provided in the middle of the four arc surfaces. The cone 203 is controlled to move up and down by a threaded rod 204 that passes through the valve stem 3 and a handwheel 1 4. A handwheel 205 is provided at the upper end of the threaded rod 204. A valve groove 101 is provided in the valve body 1 for the valve plate 2 to rise. The two sides of the valve groove 101 are respectively a side blocking plate groove 1011 corresponding to the side blocking plate 201 and an end blocking plate groove 1012 corresponding to the end blocking plate 202. By rotating the handwheel 205, the threaded rod and the cone are driven to move up and down. The cone controls the movement of the side blocking plate and the end blocking plate in the side blocking groove and the end blocking groove, thereby preventing the valve plate from moving.

[0006] Preferably, the cone is made of magnetic material, and the side blocking plates and end blocking plates can be attracted by the cone.

[0007] Preferably, connecting flanges are provided at both ends of the valve body, and baffles are provided at both ends of the valve plate at the lower part of the valve body;

[0008] Preferably, the valve plate is connected to the valve stem via a bearing, and the valve stem is connected to the valve body via a thread; the threaded rod is sleeved on the valve stem, and there is a gap between the threaded rod and the valve stem.

[0009] Preferably, the length of the side blocking plate does not exceed the length of the side edge of the valve plate, and the length of the end blocking plate does not exceed the length of the end edge of the valve plate;

[0010] Preferably, when the upper and middle part of the cone contacts the four arc surfaces, the ends of the side blocking plate and the end blocking plate contact the ends of the side blocking plate groove and the end blocking plate groove respectively;

[0011] Preferably, the width of the side blocking plate and the end blocking plate is the same as the width of the side blocking plate slot and the end blocking plate slot, respectively;

[0012] Beneficial effects of the utility model:

[0013] A threaded rod whose rotation is controlled by handwheel 2 is provided, a cone is provided at the lower end of the threaded rod, and the cone is used to control the movement of the side blocking plate and the end blocking plate, so that the side blocking plate and the end blocking plate can be stuck in the ends of the side blocking plate groove and the end blocking plate groove, so as to prevent the valve plate from moving when handwheel 1 is accidentally touched. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a leakage-proof self-sealing valve.

[0015] Figure 2 The utility model is a cross-sectional view of a valve body of a leakage-proof self-sealing valve.

[0016] Figure 3 It is a partial cross-sectional view of a valve plate of a leakage-proof self-sealing valve of the utility model.

[0017] Figure 4 The utility model is an exploded view of a cone, a side blocking plate and an end blocking plate of an anti-leakage self-blocking valve.

[0018] 1. Valve body; 101. Valve slot; 1011. Side blocking plate slot; 1012. End blocking plate slot; 102. Connecting flange; 103. Baffle; 2. Valve plate; 201. Side blocking plate; 202. End blocking plate; 203. Cone; 204. Threaded rod; 205. Handwheel 2; 3. Valve stem; 4. Handwheel 1; 5. Bearing. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] according to Figure 1 —4: The utility model provides a leakage-proof self-locking valve: comprising a valve body 1, a valve plate 2, a valve stem 3, and a handwheel 4; side blocking plates 201 are slidably provided on both sides of the valve plate 2, and end blocking plates 202 are provided on both ends; one end of the side blocking plate 201 and the end blocking plate 202 located inside the valve plate 2 is an arc surface inclined downward, and a cone 203 for controlling the side blocking plate 201 and the end blocking plate 202 to move outward is provided in the middle of the four arc surfaces; the cone 203 is controlled to move up and down by a threaded rod 204 passing through the valve stem 3 and the handwheel 4, and a handwheel 205 is provided on the upper end of the threaded rod 204; the valve body 1 is provided with a valve groove 101 for the valve plate 2 to rise on both sides thereof There is a side blocking plate groove 1011, and end blocking plate grooves 1012 are respectively provided at both ends. The widths of the side blocking plate 201 and the end blocking plate 202 are respectively the same as the widths of the side blocking plate groove 1011 and the end blocking plate groove 1012; a threaded rod 204 whose rotation is controlled by a hand wheel 205 is provided, and a cone 203 is provided at the lower end of the threaded rod 204. The cone 203 is made of a magnetic material, and the movement of the side blocking plate 201 and the end blocking plate 202 can be controlled by magnetic attraction, so that the side blocking plate 201 and the end blocking plate 202 can be stuck at the ends of the side blocking plate groove 1011 and the end blocking plate groove 1012, and when the hand wheel 1 4 is accidentally touched, the valve plate 2 can be prevented from moving;

[0021] according to Figure 1 , 2 As shown in Figure 3: the two ends of the valve body 1 are respectively provided with connecting flanges 102, the lower part of the valve body 1 is located on the two sides of the valve plate 2 and is respectively provided with baffles 103, the valve plate 2 is connected to the valve stem 3 through the bearing 5, and the valve stem 3 is connected to the valve body 1 through a thread; the threaded rod is sleeved on the valve stem, and there is a gap between the threaded rod and the valve stem. In this way, the valve stem 3 can be driven to rotate by turning the hand wheel 4, thereby driving the valve plate 2 to move up and down;

[0022] according to Figure 2 , 3 4: the length of the side blocking plate 201 does not exceed the length of the side of the valve plate 2, and the length of the end blocking plate 202 does not exceed the length of the end of the valve plate 2; thus, the side blocking plate 201 and the end blocking plate 202 can enter the valve plate 2 without affecting each other;

[0023] according to Figure 2 , 3As shown in Figure 4: when the upper and middle part of the cone 203 contacts the four curved surfaces, the ends of the side blocking plate 201 and the end blocking plate 202 contact the ends of the side blocking plate groove 1011 and the end blocking plate groove 1012 respectively. The cone 203 is made of magnetic material, and the side blocking plate 201 and the end blocking plate 202 can be attracted by the cone 203. In this way, when the cone 203 descends, the side blocking plate 201 and the end blocking plate 202 can be pushed to move outward, thereby fixing the position of the valve plate 2. When the cone 203 rises, the side blocking plate 201 and the end blocking plate 202 will be attracted by the cone 203, thereby not affecting the movement of the valve plate 2.

[0024] Principle of the utility model: when in use, first install the device on the pipeline through the connecting flange 102. Since the upper end of the threaded rod 204 is fixedly connected to the hand wheel 205, the lower end passes through the central hole of the hand wheel 4 and the inside of the valve stem 3, and extends to the fixedly connected cone 203. When the hand wheel 205 is turned, the cone 203 connected to the lower end of the threaded rod 204 can move upward. When the cone 203 moves upward, it will drive the side blocking plate 201 and the end blocking plate 202 with magnetic attraction connection to move toward the middle of the valve plate 2. Since there is a magnetic connection between the threaded rod 204 and the valve stem, The gap is formed, so that the movement of the side blocking plate 201 and the end blocking plate 202 will not affect the movement of the valve plate 2; then, the hand wheel 4 is turned to make the valve stem 3 sleeved on the outside of the threaded rod 204 rise or fall, and the upper end of the valve stem 3 and the periphery of the center hole at the lower end of the hand wheel 4 are fixedly connected. Since the lower end of the valve stem 3 and the upper end of the valve plate 2 are connected through the bearing 5, the rise or fall of the valve stem 3 will drive the valve plate 2 connected to the bearing 5 to rise or fall, and will not affect the rotation of the threaded rod 204 and the hand wheel 2 205 fixedly connected to the upper end of the threaded rod 204, thereby realizing the control of the medium flow in the pipeline. When the medium flow reaches the required level, turn handwheel 205 to move threaded rod 204 and cone 203 downward, and cone 203 will push side blocking plate 201 and end blocking plate 202 that are magnetically attracted to cone 203 to move outward until the other ends of side blocking plate 201 and end blocking plate 202 touch the ends of side blocking plate groove 1011 and end blocking plate groove 1012. In this way, the self-locking property of valve stem 3 can be used to prevent the position of valve plate 2 from being displaced, even if it is accidentally touched.

[0025] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An anti-leakage self-sealing valve, comprising a valve body (1), a valve plate (2) arranged inside the valve body, a valve stem (3) connected to the valve plate via a bearing (5), and a hand wheel (4) connected to the upper end of the valve stem; characterized in that: The valve plate (2) is provided with side blocking plates (201) on both sides thereof for sliding movement, and end blocking plates (202) on both ends thereof; one end of the side blocking plates (201) and the end blocking plates (202) located inside the valve plate (2) is an arc surface inclined downward; a cone (203) for controlling the outward movement of the side blocking plates (201) and the end blocking plates (202) is provided in the middle of the four arc surfaces; the cone (203) is controlled to move up and down by a threaded rod (204) that passes through the valve stem (3) and the hand wheel (4); the threaded rod (204) is provided to control the upward and downward movement of the cone (203); A second hand wheel (205) is provided at the upper end of the rod (204), and a valve groove (101) for the valve plate (2) to rise is provided in the valve body (1), and the two sides of the valve groove (101) are a side blocking plate groove (1011) corresponding to the side blocking plate (201) and an end blocking plate groove (1012) corresponding to the end blocking plate (202). By rotating the second hand wheel (205), the threaded rod and the cone are driven to move up and down, and the cone controls the movement of the side blocking plate and the end blocking plate in the side blocking groove and the end blocking groove, thereby preventing the movement of the valve plate.

2. The anti-leakage self-sealing valve according to claim 1, characterized in that: The cone (203) is made of a magnetic material, and the side blocking plate (201) and the end blocking plate (202) can be attracted by the cone (203).

3. The anti-leakage self-sealing valve according to claim 1, characterized in that: Connecting flanges (102) are respectively provided at both ends of the valve body (1), and baffles (103) are respectively provided at both ends of the valve plate (2) at the lower part of the valve body (1).

4. The anti-leakage self-sealing valve according to claim 1, characterized in that: The valve plate (2) and the valve stem (3) are connected via a bearing (5); the valve stem (3) and the valve body (1) are connected via threads; the threaded rod (204) is sleeved on the valve stem (3), and a gap is provided between the threaded rod (204) and the valve stem (3).

5. The anti-leakage self-sealing valve according to claim 1, characterized in that: The length of the side blocking plate (201) does not exceed the length of the side edge of the valve plate (2), and the length of the end blocking plate (202) does not exceed the length of the end edge of the valve plate (2).

6. The anti-leakage self-sealing valve according to claim 1, characterized in that: When the upper middle portion of the cone (203) contacts the four arc surfaces, the ends of the side blocking plate (201) and the end blocking plate (202) contact the ends of the side blocking plate groove (1011) and the end blocking plate groove (1012) respectively.

7. The anti-leakage self-sealing valve according to claim 1, characterized in that: The widths of the side blocking plate (201) and the end blocking plate (202) are respectively the same as the widths of the side blocking plate groove (1011) and the end blocking plate groove (1012).

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