High-pressure-difference three-way regulating valve

Abstract

The utility model relates to the technical field of regulating valves, in particular to a high-pressure-difference three-way regulating valve. The valve comprises a valve body, a valve rod is slidably connected into the valve body, and a valve element is arranged at the bottom of the valve rod. Firstly, the valve rod moves upwards to drive the multi-section arc-shaped telescopic plate to move upwards, the top of the multi-section arc-shaped telescopic plate is blocked by the inner surface of the valve body so that the multi-section arc-shaped telescopic plate can retract, then when the valve rod moves downwards, the second spring rebounds to drive the upper side installation block to slide upwards, and then the installation block slides upwards to drive the double-section telescopic rod and the first spring to move upwards. The double-section telescopic rod moves upwards to drive the multi-section arc-shaped telescopic plate to extend, meanwhile, fluid impacts on the multi-section arc-shaped telescopic plate to enable the multi-section arc-shaped telescopic plate to move rightwards, the multi-section arc-shaped telescopic plate moves rightwards to drive the first spring to retract, and then the first spring rebounds to drive the multi-section arc-shaped telescopic plate to move leftwards, so that the buffering force is increased; and fluid is blocked by the multi-section arc-shaped telescopic plate, so that the valve rod is not easy to break, and the service life of the valve rod is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a high-pressure differential three-way regulating valve. Background Art

[0002] The high pressure differential three-way regulating valve is a valve used to regulate fluid flow, which can maintain stable regulating performance under high pressure differential conditions.

[0003] If the valve stem diameter is too thin, the structural strength is insufficient, or the operating environment is not fully considered, in a high temperature and high pressure environment, if the valve design does not consider the impact of thermal expansion and thermal stress on the valve stem, the valve stem may break due to excessive deformation or stress concentration.

[0004] However, the existing high-pressure differential three-way regulating valve needs to withstand water flow impact and high pressure during use, which can easily cause the valve stem to break, resulting in internal fluid leakage, which can easily increase the risk of safety accidents. In addition, the maintenance process increases maintenance costs and downtime. In view of this, we propose a high-pressure differential three-way regulating valve. Utility Model Content

[0005] The purpose of this utility model is to solve the above shortcomings and provide a high pressure differential three-way regulating valve;

[0006] To achieve the above-mentioned object, the utility model provides a high-pressure differential three-way regulating valve, comprising a valve body, a valve stem being slidably connected to the interior of the valve body, a valve core being provided at the bottom of the valve stem, a slot being provided at the middle end of the top of the valve core, the interior of the slot being plugged into the bottom of the valve stem, a multi-section arc-shaped telescopic plate being provided on the left side of the outer surface of the valve stem, a double-section telescopic rod being fixedly connected to the right surface of the multi-section arc-shaped telescopic plate, a first spring being sleeved on the outside of the double-section telescopic rod, an end of the first spring being fixedly connected to the right surface of the multi-section arc-shaped telescopic plate, and a mounting block being fixedly connected to the other end of the double-section telescopic rod and the first spring;

[0007] The first spring rebounds to cause the fluid to impact the multi-section arc-shaped telescopic plate, thereby increasing the buffering force.

[0008] As a further improvement of the present technical solution, a rectangular groove is provided on the outer surface of the valve stem, and a mounting block is slidably connected to the inner wall of the rectangular groove. There are two mounting blocks, and the outer surface of the lower mounting block is fixedly connected to the inner surface of the rectangular groove. The top of the lower mounting block is fixedly connected to the end of a second spring, and the other end of the second spring is fixedly connected to the bottom of the upper mounting block.

[0009] As a further improvement of the present technical solution, a hole groove is provided near the top of the outer surface of the valve core, and the inner surface of the hole groove is slidably connected to the outer surface of the mounting block.

[0010] As a further improvement of the present technical solution, a slot is provided on the outer surface of the valve stem, a block is inserted into the slot, a movable plate is fixedly connected to the outer surface of the block, a bidirectional lead screw is threadedly connected to the inner surface of the movable plate, a connecting plate is rotatably connected to the outer surface of the bidirectional lead screw, and the bottom of the connecting plate is fixedly connected to the top of the valve core.

[0011] As a further improvement of the present technical solution, the end of the bidirectional screw is fixedly connected to a twisting handle, the inner surface of the connecting plate is fixedly connected to the end of the sliding rod, and the outer surface of the sliding rod is slidably connected to the inside of the movable plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] First, the valve stem moves upward, driving the multi-section arc telescopic plate to move up, and the top portion is blocked by the inner surface of the valve body, causing the multi-section arc telescopic plate to retract. Then, when the valve stem moves downward, the second spring rebounds and drives the upper mounting block to slide upward. Then, the mounting block slides upward, driving the double-section telescopic rod and the first spring to move upward, and the double-section telescopic rod moves upward, driving the multi-section arc telescopic plate to extend. At the same time, the fluid impacts the multi-section arc telescopic plate, causing the multi-section arc telescopic plate to move right, and the multi-section arc telescopic plate moves right to drive the first spring to retract. Then, the first spring rebounds and drives the multi-section arc telescopic plate to move left, increasing the buffering force. The multi-section arc telescopic plate blocks the fluid, making the valve stem not easy to break, thereby extending the service life of the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the sliding structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the clamping structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the mobile structure of the utility model;

[0018] Figure 5 For the utility model Figure 4 Schematic diagram of point A;

[0019] Figure 6 It is a schematic diagram of the rotating structure of the utility model.

[0020] The meaning of each number in the figure is:

[0021] 1. Valve body; 11. Valve stem; 111. Rectangular groove; 112. Clamping groove; 12. Valve core; 121. Hole groove; 122. Slot;

[0022] 2. Multi-section arc-shaped telescopic plate; 21. Double-section telescopic rod; 22. First spring; 23. Mounting block; 24. Second spring;

[0023] 3. Clamping block; 31. Moving plate; 32. Bidirectional screw; 33. Sliding rod; 34. Connecting plate; 35. Turn the handle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The high pressure differential three-way regulating valve is a valve used to regulate fluid flow, which can maintain stable regulating performance under high pressure differential conditions.

[0026] If the valve stem diameter is too thin, the structural strength is insufficient, or the operating environment is not fully considered, in a high temperature and high pressure environment, if the valve design does not consider the impact of thermal expansion and thermal stress on the valve stem, the valve stem may break due to excessive deformation or stress concentration.

[0027] See also Figures 1-6 As shown, this embodiment provides a high-pressure differential three-way regulating valve, including a valve body 1. In order to make the valve stem 11 more impact-resistant, the details are as follows: the valve body 1 is slidably connected to the valve stem 11, the bottom of the valve stem 11 is provided with a valve core 12, the top middle end of the valve core 12 is provided with a slot 122, the slot 122 is inserted into the bottom of the valve stem 11, the left side of the outer surface of the valve stem 11 is provided with a multi-section arc-shaped telescopic plate 2, the right surface of the multi-section arc-shaped telescopic plate 2 is fixedly connected to a double-section telescopic rod 21, and the outside of the double-section telescopic rod 21 is sleeved with a first spring 22 The end of the first spring 22 is fixedly connected to the right side surface of the multi-section arc-shaped telescopic plate 2, and the other end of the double-section telescopic rod 21 and the first spring 22 is fixedly connected to a mounting block 23. The rebound of the first spring 22 causes the fluid impact on the multi-section arc-shaped telescopic plate 2 to increase the buffering force. However, the existing high-pressure differential three-way regulating valve needs to withstand water flow impact and high pressure during use, which can easily cause the valve stem 11 to break, resulting in internal fluid leakage, which can easily increase the risk of safety accidents, and increase maintenance costs and downtime during maintenance.

[0028] The improvement of this embodiment is that:

[0029] First, the valve stem 11 moves upward, driving the multi-section arc-shaped telescopic plate 2 to move upward, and the top is blocked by the inner surface of the valve body 1, causing the multi-section arc-shaped telescopic plate 2 to retract. Then, when the valve stem 11 moves downward, the second spring 24 rebounds and drives the upper mounting block 23 to slide upward. Then, the mounting block 23 slides upward, driving the double-section telescopic rod 21 and the first spring 22 to move upward, and the double-section telescopic rod 21 moves upward, driving the multi-section arc-shaped telescopic plate 2 to extend. At the same time, the fluid impacts the multi-section arc-shaped telescopic plate 2, causing the multi-section arc-shaped telescopic plate 2 to move right. The multi-section arc-shaped telescopic plate 2 moves rightward and drives the first spring 22 to retract. Then, the first spring 22 rebounds and drives the multi-section arc-shaped telescopic plate 2 to move left, increasing the buffering force. The multi-section arc-shaped telescopic plate 2 blocks the fluid, making the valve stem 11 not easy to break, thereby extending the service life of the valve stem 11.

[0030] In order to allow the multi-section arc telescopic plate 2 to be extended, a rectangular groove 111 is opened on the outer surface of the valve stem 11, and a mounting block 23 is slidably connected to the inner wall of the rectangular groove 111. There are two mounting blocks 23, and the outer surface of the lower mounting block 23 is fixedly connected to the inner surface of the rectangular groove 111. The top of the lower mounting block 23 is fixedly connected to the end of the second spring 24, and the other end of the second spring 24 is fixedly connected to the bottom of the upper mounting block 23. First, the second spring 24 rebounds to drive the upper mounting block 23 to slide upward, and then the mounting block 23 slides upward to drive the double-section telescopic rod 21 to slide upward, and then the multi-section arc telescopic plate 2 slides upward to drive the multi-section arc telescopic plate 2 to extend, so that the multi-section arc telescopic plate 2 can be extended.

[0031] In order to facilitate the upper mounting block 23 to slide down without being blocked by the valve core 12, a hole groove 121 is opened near the top of the outer surface of the valve core 12, and the inner surface of the hole groove 121 is slidably connected to the outer surface of the mounting block 23. First, the mounting block 23 can slide on the inner surface of the slot 122, and then the upper mounting block 23 can slide down without being blocked by the valve core 12.

[0032] Secondly, in order to facilitate the replacement of the valve stem 11, a slot 112 is opened on the outer surface of the valve stem 11, and a block 3 is inserted into the slot 112. The outer surface of the block 3 is fixedly connected to a movable plate 31, and the inner thread of the movable plate 31 is connected to a two-way screw 32. The outer surface of the two-way screw 32 is rotatably connected to a connecting plate 34, and the bottom of the connecting plate 34 is fixedly connected to the top of the valve core 12. First, the two-way screw 32 rotates to drive the movable plate 31 to move, and then the movable plate 31 moves to drive the block 3 to move, and then the block 3 moves to drive the valve stem 11 to be fixed, so that the valve stem 11 is easy to replace.

[0033] Considering that the bidirectional screw 32 is not convenient to rotate, a turning handle 35 is fixedly connected to the end of the bidirectional screw 32, and the inner surface of the connecting plate 34 is fixedly connected to the end of the slide rod 33. The outer surface of the slide rod 33 is slidably connected to the inside of the movable plate 31. First, the handle 35 is turned to rotate to drive the bidirectional screw 32 to rotate, and then the convenience of rotating the bidirectional screw 32 is achieved.

[0034] In summary, the working principle of this solution is as follows:

[0035] When the fluid enters from the water inlet, the valve stem 11 moves up and down, driving the valve core 12 to block the water outlet below. At this time, the fluid entering will drive the multi-section arc telescopic plate 2 to move right, and the multi-section arc telescopic plate 2 moves right to drive the first spring 22 to retract, and then the first spring 22 rebounds to drive the multi-section arc telescopic plate 2 to move left, increasing the buffering force. When the valve core 12 blocks the upper water outlet, the valve stem 11 moves up to drive the mounting block 23 and the first spring 22 and the double-section telescopic rod 21 and the multi-section arc telescopic plate 2 to move up. At this time, the upper end of the multi-section arc telescopic plate 2 is blocked by the top of the inner surface of the valve body 1, and then the multi-section arc telescopic plate 2 retracts. The retraction of the multi-section arc telescopic plate 2 drives the upper mounting block 23 to move downward, and the downward movement of the upper mounting block 23 drives the second spring 24 to retract. When the valve stem 11 moves downward, the rebound of the second spring 24 can The upper mounting block 23 is driven to slide upward, and the upper double-section telescopic rod 21 and the first spring 22 are driven to move upward by the mounting block 23. The multi-section arc telescopic plate 2 is driven to move upward by the movement of the upper double-section telescopic rod 21 and the first spring 22, so that the multi-section arc telescopic plate 2 is blocked in front of the valve stem 11. When the valve stem 11 needs to be replaced, the handle 35 is manually turned and twisted. The rotation of the handle 35 drives the two-way screw 32 to rotate, and the rotation of the two-way screw 32 drives the moving plate 31 to move. The movement of the moving plate 31 drives the clamping block 3 to move, and the clamping block 3 moves out of the slot 112. The valve stem 11 is pulled upward by hand, making the valve stem 11 easy to install and disassemble quickly. The multi-section arc telescopic plate 2 blocks the valve stem 11, which can reduce the fluid impact of the valve stem 11 and increase the service life of the valve stem 11.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure differential three-way regulating valve, comprising a valve body (1), characterized in that: The valve body (1) is internally slidably connected to a valve stem (11), a valve core (12) is provided at the bottom of the valve stem (11), a slot (122) is provided at the middle end of the top of the valve core (12), and the slot (122) is inserted into the bottom of the valve stem (11), a multi-section arc-shaped telescopic plate (2) is provided on the left side of the outer surface of the valve stem (11), a double-section telescopic rod (21) is fixedly connected to the right side surface of the multi-section arc-shaped telescopic plate (2), a first spring (22) is sleeved on the outside of the double-section telescopic rod (21), an end of the first spring (22) is fixedly connected to the right side surface of the multi-section arc-shaped telescopic plate (2), and the other end of the double-section telescopic rod (21) and the first spring (22) is fixedly connected to a mounting block (23); The first spring (22) rebounds to cause the fluid to impact the multi-section arc-shaped telescopic plate (2) to increase the buffering force.

2. The high-pressure differential three-way regulating valve according to claim 1, characterized in that: A rectangular groove (111) is provided on the outer surface of the valve stem (11), and a mounting block (23) is slidably connected to the inner wall of the rectangular groove (111). There are two mounting blocks (23), and the outer surface of the lower mounting block (23) is fixedly connected to the inner surface of the rectangular groove (111). The top of the lower mounting block (23) is fixedly connected to the end of a second spring (24), and the other end of the second spring (24) is fixedly connected to the bottom of the upper mounting block (23).

3. The high pressure differential three-way regulating valve according to claim 1, characterized in that: The valve core (12) is provided with a hole groove (121) near the top of the outer surface, and the inner surface of the hole groove (121) is slidably connected to the outer surface of the mounting block (23).

4. The high-pressure differential three-way regulating valve according to claim 1, characterized in that: The outer surface of the valve stem (11) is provided with a slot (112), a block (3) is inserted into the slot (112), the outer surface of the block (3) is fixedly connected to a movable plate (31), the inner surface of the movable plate (31) is threadedly connected to a bidirectional lead screw (32), the outer surface of the bidirectional lead screw (32) is rotatably connected to a connecting plate (34), and the bottom of the connecting plate (34) is fixedly connected to the top of the valve core (12).

5. The high-pressure differential three-way regulating valve according to claim 4, characterized in that: The end of the bidirectional lead screw (32) is fixedly connected to a twisting handle (35), the inner surface of the connecting plate (34) is fixedly connected to the end of the slide rod (33), and the outer surface of the slide rod (33) is slidably connected to the inside of the movable plate (31).

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