Pressure regulating valve

Abstract

The utility model discloses a pressure regulating valve which comprises a valve body, a valve element for controlling the flow in the valve body, a valve rod for enabling the valve element to move up and down in the valve body and a buffering protection assembly for buffering the flow in the valve body. The buffer protection assembly comprises a first throttling plate and a second throttling plate for guiding and discharging fluid in the first throttling plate, and the adjusting valve further comprises a reset buffer assembly for resetting the first throttling plate and the second throttling plate. The first throttling plate and the second throttling plate are matched with each other, so that fluid in the valve body can be conveniently buffered in the initial flowing stage, the situation that the valve element in the valve body is damaged due to the fact that the flow speed of the fluid is too large in the initial stage that the valve body opens a gate to communicate the fluid is avoided, and the service life of the valve body and the service life of the valve element are prolonged in a disguised mode.

Description

Technical Field

[0001] The utility model relates to the technical field of valve components, in particular to a pressure regulating valve. Background Art

[0002] The pressure regulating valve, also known as the self-operated balancing valve, flow control valve, flow controller, dynamic balancing valve, and flow balancing valve, is an intuitive and simple flow regulation control device. However, after the existing pressure regulating valve is connected to the fluid (such as air flow, water flow, etc.), the existing fluid flow rate is too fast and the valve body will be damaged, thereby affecting the service life of the valve body.

[0003] A pressure regulating valve disclosed in a Chinese utility model patent (publication number CN215410398U) can automatically regulate the pressure of the fluid entering the pressure regulating shell by installing a pressure regulating mechanism and an adjusting mechanism, and at the same time facilitate flow adjustment of the fluid entering the water inlet, thereby reducing the wear of the pressure regulating shell. The pressure regulating block is made of rubber material and is in soft contact with the inner wall of the pressure regulating shell, thereby reducing the wear of the inner wall of the pressure regulating shell and the surface of the pressure regulating block, extending the service life of the inner wall of the pressure regulating shell and the surface of the pressure regulating block, facilitating the fluid to squeeze the pressure regulating block, and quickly adjusting the fluid.

[0004] However, in actual use of the above structure, when the fluid is connected to the valve body and the fluid flows in the valve body, the flow rate of the fluid may be too high, making it difficult for the regulating mechanism to regulate the flowing fluid, thereby reducing the effect of regulating the fluid in disguise. Moreover, when the flow rate of the fluid is high, it may cause certain damage to the valve body. Utility Model Content

[0005] In view of the above problems, a pressure regulating valve is provided, which solves the problem that the fluid flow rate is fast and it is difficult to adjust the flow rate through a first throttle plate and a second throttle plate.

[0006] In order to solve the problems of the prior art, the utility model provides a pressure regulating valve, including a valve body, a valve core for controlling the flow in the valve body, a valve stem for moving the valve core up and down in the valve body, and a buffer protection component for buffering the flow in the valve body, the buffer protection component including a first throttle plate and a second throttle plate for guiding the discharge of fluid in the first throttle plate, and the regulating valve also includes a reset buffer component for resetting the first throttle plate and the second throttle plate.

[0007] Preferably, the reset buffer assembly also includes a sliding plate and a first reset spring; the sliding plate is slidably arranged inside the valve body; the first reset spring is arranged between the sliding plate and the second throttle plate, and both ends of the first reset spring are respectively fixed to the ends of the sliding plate and the second throttle plate.

[0008] Preferably, the reset buffer assembly further includes a guide rod and a reset piece; the guide rod is slidably installed in the valve body and fixed to one end of the sliding piece, the axis of the guide rod and the sliding piece is horizontally arranged, and the axis of the guide rod and the sliding piece is collinear; the reset piece is installed at one end of the guide rod and close to one end of the second throttle plate.

[0009] Preferably, the reset buffer assembly further includes a second reset spring; the second reset spring is installed at one end of the reset piece, and the other end of the second reset spring is fixed to the outside of the guide rod.

[0010] Preferably, the valve body further includes a positioning assembly for fixedly locking the up and down movement of the valve rod; the positioning assembly includes a pull rod and a clamping block; the pull rod is slidably installed on the valve body and close to the valve rod; the clamping block is arranged at one end of the pull rod and close to the valve rod, and the clamping block is in clearance fit with the valve rod.

[0011] Preferably, the positioning assembly further includes a fixing plate; the fixing plate is arranged on the valve body, the fixing plate is rectangular in shape, and the fixing plate is horizontally arranged with the vertical sliding direction of the valve rod.

[0012] Preferably, the positioning assembly further includes a third reset spring; the third reset spring is arranged outside the pull rod, and both ends of the third reset spring are fixed to the pull rod and the fixing plate respectively.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows:

[0014] 1. By setting the first throttle plate and the second throttle plate to cooperate with each other, the present utility model is convenient for buffering the fluid in the valve body at the initial stage of flow, avoiding damage to the valve core in the valve body caused by too large fluid flow velocity at the initial stage of opening the valve to connect the fluid, and indirectly improving the service life of the valve body and the valve core.

[0015] 2. By setting the first reset spring to drive the sliding piece to reset when there is no fluid passing through, the present utility model is convenient for setting the sliding piece in the valve body to return to the initial position.

[0016] 3. By setting the pull rod and the clamping block, the present utility model is convenient for controlling the valve core, and further achieves the effect of opening and blocking the fluid in the valve body. Description of the Drawings

[0017] Figure 1 is a three-dimensional structure diagram of a pressure regulating valve from the first perspective.

[0018] Figure 2 is a three-dimensional structure diagram of a pressure regulating valve from the second perspective.

[0019] Figure 3 is a front view structure diagram of a pressure regulating valve.

[0020] Figure 4 is a kind of pressure regulating valveFigure 3 Middle sectional view structure diagram.

[0021] Figure 5 It is a Figure 4 Enlarged structure diagram at position B in the middle.

[0022] Figure 6 It is a three-dimensional sectional structure diagram of a pressure regulating valve.

[0023] Figure 7 It is a Figure 1 Enlarged structure diagram at position A in the middle.

[0024] Figure 8 It is a three-dimensional structure diagram of the first throttle plate and the second throttle plate of a pressure regulating valve.

[0025] The reference numerals in the figure are: 1 - valve body; 2 - valve core; 3 - buffer protection assembly; 31 - first throttle plate; 32 - second throttle plate; 4 - reset buffer assembly; 41 - sliding piece; 42 - first reset spring; 43 - guide rod; 44 - reset piece; 45 - second reset spring; 5 - positioning assembly; 51 - pull rod; 52 - clamping block; 53 - fixing plate; 54 - third reset spring. Specific implementation manner

[0026] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0027] Refer to Figure 1 and Figure 8 As shown, a pressure regulating valve includes a valve body 1, a valve core 2 for controlling the flow rate inside the valve body 1, a valve stem for moving the valve core 2 up and down inside the valve body 1, and a buffer protection assembly 3 for buffering the flow rate inside the valve body 1. The buffer protection assembly 3 includes a first throttle plate 31 and a second throttle plate 32 for guiding and discharging the fluid inside the first throttle plate 31. The regulating valve further includes a reset buffer assembly 4 for resetting the first throttle plate 31 and the second throttle plate 32. A diversion groove for the fluid to pass through the first throttle plate 31 is provided inside the valve body 1. The first throttle plate 31 is in a circular ring shape and is arranged in the diversion groove in a segmented manner. A plurality of diversion ports for the fluid to flow out are provided on the second throttle plate 32. The diversion ports can be square or polygonal, preferably circular. The circular shape is convenient for reducing the resistance of the fluid during flow and enabling the fluid to pass through evenly. A positioning ring is provided between the second throttle plate 32 and close to the first throttle plate 31 and the diversion groove. The positioning ring is a hollow cylinder. In the initial state, the positioning ring is located inside the diversion groove to block the flow of the fluid inside the diversion groove, and the distance between the positioning rings is smaller than the second throttle plate 32 and larger than the outer diameter of the diversion ports provided on the second throttle plate 32.

[0028] When the fluid flows through the first diversion plate, after passing through the diversion groove, it drives the second throttle plate 32 and the positioning circle to eject. Then, when the fluid passes through the diversion opening formed in the second throttle plate 32, the fluid can drive the positioning ring and the second throttle plate 32 to move away from each other, thereby buffering and blocking the flow rate of the fluid. Moreover, after the first throttle plate 31 and the second throttle plate 32 move and unfold, the fluid can pass through the first throttle plate 31 and the second throttle plate 32 at a uniform speed, achieving buffering of the initial flow rate of the fluid flowing in and indirectly improving the protection of the valve body 1.

[0029] See Figure 3 and Figure 5 As shown, the reset buffer assembly 4 further includes a sliding piece 41 and a first reset spring 42; the sliding piece 41 is slidably disposed inside the valve body 1; the first reset spring 42 is disposed between the sliding piece 41 and the second throttle plate 32, and both ends of the first reset spring 42 are fixed to the sliding piece 41 and the end of the second throttle plate 32 respectively.

[0030] The sliding piece 41 is in a circular solid shape. The first reset spring 42 drives the sliding piece 41 to reset when there is no fluid passing through, driving the sliding piece 41 to move horizontally along the axis until the sliding piece 41 returns to its initial position.

[0031] See Figure 3 and Figure 5 As shown, the reset buffer assembly 4 further includes a guide rod 43 and a reset piece 44; the guide rod 43 is slidably installed inside the valve body 1 and fixed to one end of the sliding piece 41. The guide rod 43 is horizontally arranged with the axis of the sliding piece 41, and the guide rod 43 is collinear with the axis of the sliding piece 41; the reset piece 44 is installed at one end of the guide rod 43 and close to one end of the second throttle plate 32.

[0032] When the sliding piece 41 moves, it drives the guide rod 43 to move synchronously, driving the guide rod 43 and the reset piece 44 to move. When moving, the sliding piece 41 loses the block on the diversion groove, so that the fluid flows out through the first throttle plate 31. After flowing in, the fluid drives the second throttle piece and the positioning ring to move, and then the fluid can flow out again through the diversion opening formed in the second throttle plate 32 after moving.

[0033] See Figure 5 and Figure 6 As shown, the reset buffer assembly 4 further includes a second reset spring 45; the second reset spring 45 is installed at one end of the reset piece 44, and the other end of the second reset spring 45 is fixed to the outside of the guide rod 43.

[0034] When there is no fluid flowing through the valve body 1, the second return spring 45 drives the guide rod 43 to move towards the position closer to the second throttle plate 32. Further movement then causes the return piece 44, the second throttle plate 32, and the positioning ring to slide into the drainage groove, closing the drainage groove. At the same time, when the second throttle plate 32 slides, the fluid in the chamber between the second throttle plate 32 and the sliding piece 41 is discharged through the guiding opening provided on the second throttle plate 32, facilitating the reduction of resistance for the second throttle plate 32 and the positioning ring to reset and block the fluid from flowing back.

[0035] See Figure 6 and Figure 7 As shown, the valve body 1 further includes a positioning component 5 for fixedly locking the up and down movement of the valve stem; the positioning component 5 includes a pull rod 51 and a clamping block 52; the pull rod 51 is slidably installed on the valve body 1 and is close to the valve stem; the clamping block 52 is provided at one end of the pull rod 51 and is close to the valve stem, and the clamping block 52 is in clearance fit with the valve stem.

[0036] When pulling the pull rod 51 outward, the clamping rod fixed to the other end of the pull rod 51 is driven to move outward of the valve stem, causing the clamping block 52 to disengage from the outside of the valve stem. At this time, it is convenient to adjust the valve stem in the vertical direction up and down, facilitating the control of the valve core 2, and thus achieving the effect of opening and blocking the fluid in the valve body 1.

[0037] See Figure 6 and Figure 7 As shown, the positioning component 5 further includes a fixing plate 53; the fixing plate 53 is provided on the valve body 1, the fixing plate 53 is rectangular in shape, the fixing plate 53 is horizontally arranged in the vertical sliding direction of the valve stem, and a circular hole for the pull rod 51 to slide is provided on the fixing plate 53. The diameter of the circular hole can be matched with the outside of the pull rod 51 or the diameter is larger than the diameter of the pull rod 51. Preferably, the diameters are matched, facilitating the smooth sliding of the pull rod 51 on the sliding plate.

[0038] The setting of the fixing plate 53 facilitates the operation of pulling the pull rod 51, and the fixing plate 53 can be quickly installed on the valve body 1 through bolts, facilitating the quick installation and replacement of the fixing plate 53.

[0039] See Figure 1 and Figure 7 As shown, the positioning component 5 further includes a third return spring; the third return spring 54 is provided outside the pull rod 51, and both ends of the third return spring 54 are fixed to the pull rod 51 and the fixing plate 53 respectively.

[0040] The third return spring 54 is used to drive the pull rod 51 to always cause the clamping block 52 to engage with the valve stem in the initial state and perform the reset work on the pulled pull rod 51, facilitating the fixation of the position of the valve stem, and simplifying the control effect on the valve core 2 compared with the traditional thread.

[0041] The above embodiments only represent one or several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the appended claims.

Claims

1. A pressure regulating valve, comprising a valve body (1), a valve core (2) for controlling the flow rate inside the valve body (1), a valve stem for moving the valve core (2) up and down inside the valve body (1), and a buffer protection assembly (3) for buffering the flow rate inside the valve body (1); characterized in that, The buffer protection component (3) includes a first throttle plate (31) and a second throttle plate (32) for guiding and discharging the fluid inside the first throttle plate (31). The regulating valve further includes a reset buffer component (4) for resetting the first throttle plate (31) and the second throttle plate (32).

2. The pressure regulating valve according to claim 1, characterized in that, The reset buffer component (4) further includes a sliding piece (41) and a first reset spring (42); the sliding piece (41) is slidably arranged inside the valve body (1); the first reset spring (42) is arranged between the sliding piece (41) and the second throttle plate (32), and both ends of the first reset spring (42) are fixed to the sliding piece (41) and the end of the second throttle plate (32) respectively.

3. A pressure regulating valve according to claim 1, characterized in that, The reset buffer component (4) further includes a guide rod (43) and a reset piece (44); the guide rod (43) is slidably installed inside the valve body (1) and fixed to one end of the sliding piece (41). The guide rod (43) is horizontally arranged with the axis of the sliding piece (41), and the guide rod (43) is collinear with the axis of the sliding piece (41); the reset piece (44) is installed at one end of the guide rod (43) and close to one end of the second throttle plate (32).

4. A pressure regulating valve according to claim 1, characterized in that, The reset buffer component (4) further includes a second reset spring (45); the second reset spring (45) is installed at one end of the reset piece (44), and the other end of the second reset spring (45) is fixed to the outside of the guide rod (43).

5. The pressure regulating valve according to claim 1, wherein The valve body (1) further includes a positioning component (5) for fixedly locking the up and down movement of the valve stem; the positioning component (5) includes a pull rod (51) and a clamping block (52); the pull rod (51) is slidably installed on the valve body (1) and close to the valve stem; the clamping block (52) is arranged at one end of the pull rod (51) and close to the valve stem, and the clamping block (52) has a clearance fit with the valve stem.

6. The pressure regulating valve according to claim 1, wherein, The positioning component (5) further includes a fixing plate (53); the fixing plate (53) is arranged on the valve body (1), the fixing plate (53) is rectangular in shape, and the fixing plate (53) is horizontally arranged with the vertical sliding direction of the valve stem.

7. A pressure regulating valve according to claim 1, characterized in that, The positioning component (5) further includes a third reset spring; the third reset spring (54) is arranged outside the pull rod (51), and both ends of the third reset spring (54) are fixed to the pull rod (51) and the fixing plate (53) respectively.

Images