Needle valve

Abstract

The utility model provides a needle type valve, relates to valve technical field, the utility model provides a needle type valve, it includes valve body, said valve body both ends are provided with auxiliary device, said auxiliary device includes two L-shaped plate, one end of two L-shaped plate is with the bottom of valve body one end symmetrically and fixedly connected, the inner wall of two L-shaped plate both is rotatingly connected with threaded rod, and the threaded rod is connected with the valve body one end. The device comprises two threaded rods, the ends, close to each other, of the two threaded rods are fixedly connected, threads of the two threaded rods are the same in size and opposite in direction, connecting plates are connected to the outer surfaces of the two threaded rods in a threaded mode, and clamping plates are fixedly connected to the bottoms of the connecting plates. And the two threaded rods can respectively drive one clamping plate to move oppositely until the two clamping plates completely clamp a connecting pipeline connected with the valve body, so that the connection between the valve body and the connecting pipeline is prevented from loosening, and the leakage of the needle valve is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a needle-type valve. Background Art

[0002] A needle valve is a valve that can be precisely adjusted and has a wide range of uses. For example, the cutting distance used in flame cutting and the knob for adjusting the flame temperature are needle valves. Instrument needle valves are an important component of instrument measurement pipeline systems, mainly including stop valves and ball valves, and their function is to open or cut off pipeline passages.

[0003] When using a needle valve, the two ends of the valve body need to be connected to one end of the input pipe and one end of the output pipe respectively. However, the water flow inside the needle valve will cause an impact on the connection between the valve body and the pipe. Under long-term impact, the connection between the valve body and the connecting pipe may become loose, which will cause the needle valve to leak. Summary of the Invention

[0004] The utility model proposes a needle valve to solve the problem that the water flow flowing inside the needle valve may cause impact on the connection between the valve body and the pipeline. Under long-term impact, the connection between the valve body and the connecting pipeline may become loose, which may lead to leakage of the needle valve.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a needle valve, comprising a valve body, auxiliary devices are provided at both ends of the valve body, the auxiliary devices include two L-shaped plates, one end of the two L-shaped plates is symmetrically fixedly connected to the bottom of one end of the valve body, the inner walls of the two L-shaped plates are rotatably connected to threaded rods, the two threaded rods are fixedly connected at one end that is close to each other, the threads of the two threaded rods are the same size and opposite in direction, the outer surfaces of the two threaded rods are threadedly connected to connecting plates, the bottom of the connecting plate is fixedly connected to a splint, the two splints are symmetrically arranged at one end of the valve body, the top of the valve body is fixedly connected to a connecting piece, the inner wall of the connecting piece is rotatably connected to a valve stem, one end of the valve stem is fixedly connected to a handle, and the outer surface of the handle is provided with an anti-slip device.

[0006] The effect achieved by the above components is: by setting up two clamping plates, under the action of two threaded rods, the two threaded rods are rotated, and the two threaded rods will respectively drive a clamping plate connected to the connecting plate to move toward each other until the two clamping plates completely clamp the connecting pipe connected to the valve body, which is helpful to prevent the connection between the valve body and the connecting pipe from loosening, and thus prevent leakage of the needle valve.

[0007] Preferably, the inner walls of the two connecting plates are slidably connected to a same round rod, and the outer surfaces of the round rod are fixedly connected to the inner wall of the L-shaped plate.

[0008] The effect achieved by the above components is: by setting the round rod, when the connecting plate moves under the action of the threaded rod, the connecting plate will slide synchronously on the outer surface of the round rod, which can limit the splint connected to the connecting plate.

[0009] Preferably, both ends of the round rod are fixedly connected to a baffle, and the outer surface of the threaded rod is inserted into the inner wall of the baffle.

[0010] The effect achieved by the above components is that by setting the baffle, the two ends of the round rod can be blocked, which is helpful to prevent the connecting plate from being separated from the round rod due to misoperation.

[0011] Preferably, the ends of the two threaded rods that are away from each other are fixedly connected to an operating block, and the outer surface of the operating block is provided with a protrusion.

[0012] The effect achieved by the above components is: by setting the operating block, rotating the operating block can drive the two threaded rods to rotate synchronously. At the same time, the outer surface of the operating block is provided with a protrusion, which can effectively increase the friction force of the outer surface of the operating block and have an anti-slip effect when rotating the operating block.

[0013] Preferably, the adjacent sides of the two clamping plates are both fixedly connected with a rubber block, and one side of the rubber block is arc-shaped.

[0014] The effect achieved by the above components is: by setting the rubber block, one side of the clamping plate can be replaced to abut against the outer surface of the connecting pipe, which can increase the friction between the clamping plate and the connecting pipe, making the clamping plate clamp the connecting pipe more firmly.

[0015] Preferably, the anti-slip device includes two rubber sleeves, both of which are sleeved on the outer surface of the handle, the middle part of the handle and one end of the valve stem are fixedly connected to the same auxiliary block, one end of the two rubber sleeves are respectively abutted against the two sides of the auxiliary block, and the outer surface of the rubber sleeve is evenly provided with grooves.

[0016] The effect achieved by the above components is: by providing a rubber sleeve with grooves, the friction on the outer surface of the handle can be increased, so that it has an anti-slip effect when the valve stem is rotated by the handle, and at the same time the rubber sleeve is detachable, which makes it easy to replace the aging or damaged rubber sleeve.

[0017] Preferably, a clamping strip is fixedly connected to the inner wall of the rubber sleeve, and clamping grooves are symmetrically opened on the outer surface of the handle, and the outer surface of the clamping strip is inserted into the inner wall of the clamping groove.

[0018] The effect achieved by the above components is that the rubber sleeve can be limited by providing the clamping strip and the clamping slot, thereby preventing the rubber sleeve from rotating on the outer surface of the handle when the handle is gripped and rotated.

[0019] Preferably, both ends of the handle are provided with a stopper, the inner wall of the stopper is inserted with a bolt, and the outer surface of the bolt is threadedly inserted into the inner wall of the handle.

[0020] The effect achieved by the above components is: by setting a block and a bolt, inserting the bolt into the inner wall of the block, and rotating the bolt so that the bolt enters the inner wall of the handle, the two blocks can be fixed to the two ends of the handle respectively, and the block can block the two ends of the handle, which is helpful to prevent the rubber sleeve from falling off the handle.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are:

[0022] In the present invention, by setting two clamping plates, under the action of two threaded rods, the two threaded rods can respectively drive one clamping plate to move toward each other until the two clamping plates completely clamp the connecting pipe connected to the valve body, which is helpful to prevent the connection between the valve body and the connecting pipe from loosening, and thus prevent leakage of the needle valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the auxiliary device of the utility model;

[0025] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0026] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point B.

[0027] Legend: 1. Valve body; 2. Auxiliary device; 21. L-shaped plate; 22. Threaded rod; 23. Connecting plate; 24. Clamp; 25. Round rod; 26. Baffle; 27. Operating block; 28. Rubber block; 3. Connector; 4. Valve stem; 5. Anti-slip device; 51. Rubber sleeve; 52. Auxiliary block; 53. Clip strip; 54. Slot; 55. Stop block; 56. Bolt; 6. Handle. DETAILED DESCRIPTION

[0028] Example 1, with reference to Figure 1-Figure 4As shown, this embodiment discloses a needle valve, including a valve body 1, with auxiliary devices 2 provided at both ends of the valve body 1, the auxiliary device 2 including two L-shaped plates 21, one end of the two L-shaped plates 21 being symmetrically fixedly connected to the bottom of one end of the valve body 1, the inner walls of the two L-shaped plates 21 are rotatably connected to threaded rods 22, the ends of the two threaded rods 22 being fixedly connected, the threads of the two threaded rods 22 being of the same size and in opposite directions, the outer surfaces of the two threaded rods 22 are threadedly connected to connecting plates 23, the bottom of the connecting plate 23 is fixedly connected to a clamping plate 24, and the two clamping plates 24 are symmetrically arranged on the valve body 1. At one end, the top of the valve body 1 is fixedly connected to a connecting piece 3, the inner wall of the connecting piece 3 is rotatably connected to the valve stem 4, one end of the valve stem 4 is fixedly connected to a handle 6, and the outer surface of the handle 6 is provided with an anti-slip device 5. By providing two clamping plates 24, under the action of the two threaded rods 22, the two threaded rods 22 are rotated, and the two threaded rods 22 will respectively drive a clamping plate 24 connected to the connecting plate 23 to move toward each other until the two clamping plates 24 completely clamp the connecting pipe connected to the valve body 1, which is conducive to preventing the connection between the valve body 1 and the connecting pipe from loosening, thereby preventing leakage of the needle valve.

[0029] Reference Figure 2 and Figure 3 As shown, the inner walls of the two connecting plates 23 are slidably connected to the same round rod 25, and the outer surfaces of the round rod 25 are fixedly connected to the inner wall of the L-shaped plate 21. By setting the round rod 25, when the connecting plate 23 moves under the action of the threaded rod 22, the connecting plate 23 will slide synchronously on the outer surface of the round rod 25, which can limit the splint 24 connected to the connecting plate 23; both ends of the round rod 25 are fixedly connected to the baffle 26, and the outer surface of the threaded rod 22 is inserted into the inner wall of the baffle 26. By setting the baffle 26, the two ends of the round rod 25 can be blocked, which is beneficial to prevent the connecting plate 23 from detaching from the round rod 25 due to misoperation.

[0030] Reference Figure 2 and Figure 3 As shown, the ends of the two threaded rods 22 that are away from each other are fixedly connected to an operating block 27, and the outer surface of the operating block 27 is provided with a protrusion. By providing the operating block 27, rotating the operating block 27 can drive the two threaded rods 22 to rotate synchronously. At the same time, the outer surface of the operating block 27 is provided with a protrusion, which can effectively increase the friction force of the outer surface of the operating block 27, and has an anti-slip effect when rotating the operating block 27; the side where the two splints 24 are close to each other is fixedly connected to a rubber block 28, and one side of the rubber block 28 is arc-shaped. By providing the rubber block 28, it can replace one side of the splint 24 to abut against the outer surface of the connecting pipe, which can increase the friction force between the splint 24 and the connecting pipe, so that the splint 24 clamps the connecting pipe more firmly.

[0031] Reference Figure 2 and Figure 4 As shown, the anti-slip device 5 includes two rubber sleeves 51, and the two rubber sleeves 51 are both sleeved on the outer surface of the handle 6. The middle part of the handle 6 and one end of the valve stem 4 are fixedly connected with the same auxiliary block 52. One end of the two rubber sleeves 51 is respectively abutted against the two sides of the auxiliary block 52. The outer surface of the rubber sleeve 51 is evenly provided with grooves. By providing the rubber sleeve 51 with grooves, the friction force of the outer surface of the handle 6 can be increased, so that it has an anti-slip effect when the valve stem 4 is rotated by the handle 6. At the same time, the rubber sleeve 51 is detachable, which facilitates the replacement of the aged or damaged rubber sleeve 51.

[0032] Reference Figure 2 and Figure 4 As shown, the inner wall of the rubber sleeve 51 is fixedly connected with a clamping strip 53, and the outer surface of the handle 6 is symmetrically provided with a clamping groove 54, and the outer surface of the clamping strip 53 is inserted into the inner wall of the clamping groove 54. By providing the clamping strip 53 and the clamping groove 54, the rubber sleeve 51 can be limited, which can prevent the rubber sleeve 51 from rotating on the outer surface of the handle 6 when the handle 6 is held and rotated; both ends of the handle 6 are provided with a stopper 55, and the inner wall of the stopper 55 is inserted with a bolt 56, and the outer surface of the bolt 56 is threadedly inserted into the inner wall of the handle 6. By providing the stopper 55 and the bolt 56, the bolt 56 is inserted into the inner wall of the stopper 55, and the bolt 56 is rotated so that the bolt 56 enters the inner wall of the handle 6, so that the two stoppers 55 can be fixed to the two ends of the handle 6 respectively, and the stopper 55 can block the two ends of the handle 6, which is beneficial to prevent the rubber sleeve 51 from separating from the handle 6.

[0033] Working principle: When it is necessary to perform auxiliary fixation between the connecting pipe and the valve body 1, the two operating blocks 27 are rotated to drive a threaded rod 22 to rotate respectively. Under the limit of the round rod 25, the two threaded rods 22 will respectively drive a clamping plate 24 connected to the connecting plate 23 to move toward each other until the rubber block 28 on one side of the two clamping plates 24 completely clamps the connecting pipe connected to the valve body 1, which helps to prevent the connection between the valve body 1 and the connecting pipe from loosening; when it is necessary to install the rubber sleeve 51, the rubber sleeve 51 is placed on the surface of the handle 6. The surface is made so that the card strip 53 is inserted into the inner wall of the card slot 54, and then the bolt 56 is inserted into the inner wall of the stopper 55, and the bolt 56 is rotated so that the bolt 56 enters the inner wall of the handle 6, so that the two stoppers 55 can be fixed to the two ends of the handle 6 respectively, and then the rubber sleeve 51 and the handle 6 can be fixed, and the bolt 56 is inserted into the inner wall of the stopper 55, and the bolt 56 is rotated so that the bolt 56 enters the inner wall of the handle 6, so that the two stoppers 55 can be fixed to the two ends of the handle 6 respectively, and the stopper 55 can block the two ends of the handle 6.

Claims

1. A needle valve, comprising a valve body (1), characterized in that: Both ends of the valve body (1) are provided with auxiliary devices (2), and the auxiliary devices (2) include two L-shaped plates (21), one end of the two L-shaped plates (21) is symmetrically fixedly connected to the bottom of one end of the valve body (1), the inner walls of the two L-shaped plates (21) are rotatably connected to threaded rods (22), the two threaded rods (22) are fixedly connected at one end thereof, the threads of the two threaded rods (22) are of the same size and in opposite directions, the outer surfaces of the two threaded rods (22) are threadedly connected to connecting plates (23), the bottom of the connecting plates (23) is fixedly connected to a clamping plate (24), and the two clamping plates (24) are symmetrically arranged at one end of the valve body (1), the top of the valve body (1) is fixedly connected to a connecting piece (3), the inner wall of the connecting piece (3) is rotatably connected to a valve stem (4), one end of the valve stem (4) is fixedly connected to a handle (6), and the outer surface of the handle (6) is provided with an anti-slip device (5).

2. A needle valve according to claim 1, characterized in that: The inner walls of the two connecting plates (23) are slidably connected to a same round rod (25), and the outer surfaces of the round rod (25) are fixedly connected to the inner wall of the L-shaped plate (21).

3. A needle valve according to claim 2, characterized in that: Both ends of the round rod (25) are fixedly connected to a baffle (26), and the outer surface of the threaded rod (22) is inserted into the inner wall of the baffle (26).

4. The needle valve according to claim 1, characterized in that: The ends of the two threaded rods (22) that are away from each other are fixedly connected to an operating block (27), and a protrusion is provided on the outer surface of the operating block (27).

5. The needle valve according to claim 1, characterized in that: The two clamping plates (24) are fixedly connected to a rubber block (28) on one side thereof, and one side of the rubber block (28) is arc-shaped.

6. The needle valve according to claim 1, characterized in that: The anti-slip device (5) comprises two rubber sleeves (51), both of which are sleeved on the outer surface of the handle (6), and the middle of the handle (6) and one end of the valve stem (4) are fixedly connected to the same auxiliary block (52), one end of the two rubber sleeves (51) respectively abuts against both sides of the auxiliary block (52), and the outer surface of the rubber sleeve (51) is uniformly provided with grooves.

7. The needle valve according to claim 6, characterized in that: The inner wall of the rubber sleeve (51) is fixedly connected with a clamping strip (53), the outer surface of the handle (6) is symmetrically provided with a clamping groove (54), and the outer surface of the clamping strip (53) is inserted into the inner wall of the clamping groove (54).

8. The needle valve according to claim 6, characterized in that: Both ends of the handle (6) are provided with a stopper (55), the inner wall of the stopper (55) is inserted with a bolt (56), and the outer surface of the bolt (56) is threadedly inserted into the inner wall of the handle (6).

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