Double-pilot pressure reducing valve convenient for exhaust control

Abstract

The utility model relates to the technical field of double-pilot pressure reducing valves, in particular to a double-pilot pressure reducing valve convenient for exhaust control, which comprises a valve body and an exhaust pressure reducing mechanism, the exhaust pressure reducing mechanism used for rapidly adjusting pressure reduction and exhaust in the valve body is arranged on one side of the valve body, the exhaust pressure reducing mechanism comprises a movable cavity formed in the valve body, and a connecting pipe is arranged on one side of the movable cavity; when gas passes through the valve body, pressure relief and exhaust can be conducted through the exhaust pressure reduction mechanism when the pressure of the gas passing through the valve body exceeds a threshold value, and the pressure relief value can be flexibly adjusted through the pressure reduction assembly when the pressure changes greatly, so that the use range of the pressure reducing valve is wider, the exhaust effect is better, and the practicability is high. And when the pressure reducing assembly is damaged due to abrasion, the pressure reducing assembly can be quickly replaced through the replacement assembly, so that the operation is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of double-pilot pressure reducing valves, in particular to a double-pilot pressure reducing valve which is convenient for exhaust control. Background Art

[0002] A double pilot pressure reducing valve is a pressure reducing valve used in hydraulic systems. It has two pilot control systems to regulate and stabilize the pressure of the main system. This type of pressure reducing valve is designed to control pressure more accurately, especially in situations where two different pressure settings are required. The double pilot pressure reducing valve is able to switch between two preset pressure levels, providing the system with more flexible and reliable pressure regulation.

[0003] As shown in the reference case "A pilot-operated pressure reducing valve" announcement number "CN220060685U", it can alleviate the pressure fluctuation at the moment the valve body opens and increase working stability;

[0004] However, when the pressure of the existing pressure reducing valve exceeds the threshold, the pilot component can reduce the pressure and exhaust the air. However, the pilot component usually has an exhaust port of a fixed size. In applications where load conditions change frequently, such as lifting machinery, logistics transportation systems, etc., the system pressure may vary greatly depending on the load size. The fixed-size exhaust port cannot be well adapted and adjusted, thereby affecting the use of the pressure reducing valve.

[0005] Therefore, a dual-pilot pressure reducing valve for easy exhaust control is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the present utility model is to provide a dual-pilot pressure reducing valve for easy exhaust control in order to solve the above-mentioned problem, thereby improving the problem that the exhaust outer diameter port of the pilot component is usually fixed in size. In applications where load conditions frequently change, such as lifting machinery, logistics transportation systems, etc., the system pressure may vary greatly depending on the load size, and the fixed-size exhaust port cannot be well adapted and adjusted, thereby affecting the use of the pressure reducing valve.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme: a dual-pilot pressure reducing valve that is easy to control exhaust, comprising: a valve body, wherein two sides of the valve body are respectively connected with an air inlet and an air outlet, an exhaust pressure reducing mechanism, and the exhaust pressure reducing mechanism is arranged on one side of the valve body for quickly adjusting the reduced pressure and exhaust inside the valve body, wherein the exhaust pressure reducing mechanism comprises an active cavity opened in the valve body, a connecting pipe is arranged on one side of the active cavity, a replacement component is arranged between the connecting pipe and the active cavity, and pressure reducing components are arranged on both sides of the connecting pipe, and the exhaust pressure reducing mechanism can be used to relieve the pressure and exhaust when the pressure of the gas passing through the valve body exceeds a threshold value, and the pressure relief value can be flexibly adjusted by the pressure reducing component when the pressure changes greatly, thereby making the use range of the pressure reducing valve wider and the exhaust effect better, and when the pressure reducing component is damaged due to wear, the pressure reducing component can also be quickly replaced by the replacement component, which is very convenient.

[0008] Preferably, the replacement component includes a connecting block fixedly mounted on one side of the connecting pipe, the connecting block is slidably connected to the valve body, and the connecting block is located on one side of the movable chamber, and two connecting ports are penetrated through the surface of the connecting block, and two positioning rods are slidably mounted on one side of the valve body, and the two positioning rods penetrate the two connecting ports, and one end of the two positioning rods is fixedly connected with a screw, and the two screws are threadedly connected to the valve body. When the pressure reducing assembly needs to be replaced, the two positioning rods can be rotated to synchronously drive the corresponding screws to rotate, so that the two positioning rods can be separated from the inside of the valve body, and the two positioning rods can be moved out of the connecting block to separate the connecting block from the valve body, and the disassembly and replacement of the pressure reducing assembly is very convenient.

[0009] Preferably, a flow port is provided through one side of the connecting block, and the interior of the active cavity and the connecting pipe are connected to each other through the flow port. The gas can enter the active cavity through the air inlet, and enter the interior of the connecting pipe through the flow port when the pressure is released, and then the pressure is reduced by the pressure reducing assembly.

[0010] Preferably, the decompression assembly includes a decompression chamber fixedly mounted at both ends of a connecting pipe, a first spring is arranged inside the decompression chamber, one end of the first spring is fixedly connected to a piston plate, the piston plate is slidably connected to the inner wall of the connecting pipe, two exhaust channels are fixedly mounted on one side of the connecting pipe, the two exhaust channels are respectively located on one side of the two piston plates, one side of the two exhaust channels is fixedly connected to an exhaust pipe, the connecting block is located between the two piston plates, when the pressure exceeds a threshold value, excess gas can enter the interior of the connecting pipe through the connecting block and move through the piston plates on both sides, when the piston plate moves, the exhaust channel will gradually open, and the gradually opened exhaust channel can increase the pressure relief amount, thereby adapting, and synchronously squeezing the first spring when the piston plate moves, when the pressure relief is over, the first spring can be reset to synchronously reset the piston plate, which is very convenient.

[0011] Preferably, the decompression assembly also includes a piston rod arranged on one side of the decompression chamber, one end of the piston rod extends into the interior of the decompression chamber, and one end of the piston rod is threadedly connected to the inner wall of the decompression chamber. The two piston rods are respectively located on one side of the two piston plates, and one end of the two piston rods are rotatably connected to the adjacent first springs. When the pressure relief resistance needs to be adjusted, the piston rod can be rotated to allow one side of the piston rod to move with the threads of the inner wall of the decompression chamber, so that the piston rod can be driven to move, and the piston rod can synchronously push the piston plate to move. By changing the spacing between the two piston plates, the gas entering the connecting pipe needs to push the piston plate to move a greater distance to open the exhaust channel for pressure relief, thereby quickly adjusting the pressure relief resistance, and different pressure relief resistances can be set for the piston rods on both sides.

[0012] Preferably, the exhaust passage is a strip-shaped passage, one end of the exhaust pipe is connected to the outside, and the strip-shaped exhaust passage can better increase the connecting space with the inside of the connecting pipe as the piston plate opens, so that the pressure relief adjustment is more stable.

[0013] Preferably, an adjusting block is provided inside the active cavity, a vent is formed through one side of the adjusting block, one side of the adjusting block is slidably connected to the inner wall of the active cavity, and one side of the adjusting block is fixedly connected to the top wall of the active cavity via a second spring. When gas enters the active cavity and the pressure is normal, it can flow to the air outlet through the gap between the adjusting block and the active cavity for use, and the vent is a narrow channel.

[0014] Preferably, one side of the adjusting block is located above the air inlet, and a piston plate is fixedly mounted on the surface of the adjusting block. The piston plate is set in a semicircular shape and is located on one side of the air outlet. When the pressure at the air inlet of the valve body initially increases, the adjusting block can be moved by squeezing the adjusting block so that the adjusting block rises and synchronously drives the piston plate to move, so as to gradually open the air outlet. In this way, the pressure of the gas passing through the valve body can be maintained, and it is very convenient to perform preliminary adjustments when the pressure at the air inlet increases.

[0015] The beneficial effects of the utility model are:

[0016] 1. When passing through the valve body, the exhaust pressure relief mechanism can be used to relieve the pressure when the pressure of the gas exceeds the threshold, and the pressure relief value can be flexibly adjusted through the pressure relief component when the pressure changes greatly, so that the use range of the pressure relief valve is wider and the exhaust effect is better. When the pressure relief component is damaged due to wear, it can also be quickly replaced by the replacement component, which is very convenient;

[0017] 2. When the pressure relief resistance needs to be adjusted, the piston rod can be rotated to allow the piston rod to synchronously push the piston plate to move. By changing the distance between the two piston plates, the gas entering the connecting pipe needs to push the piston plate to move a greater distance to open the exhaust channel for pressure relief, thereby quickly adjusting the pressure relief resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the valve body of the utility model;

[0020] Figure 3 This is a schematic diagram of the positioning rod structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the pressure reducing assembly of the utility model.

[0022] In the figure: 1. valve body; 101. air inlet; 102. air outlet; 2. exhaust and pressure reducing mechanism; 21. movable chamber; 22. connecting pipe; 23. replacement assembly; 231. connecting block; 232. connecting port; 233. positioning rod; 234. screw; 24. pressure reducing assembly; 241. pressure reducing chamber; 242. piston rod; 243. first spring; 244. piston plate; 245. exhaust channel; 246. exhaust pipe; 25. adjusting block; 26. vent hole; 27. second spring; 28. piston plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] When implementing: Figure 1-4 As shown, a dual-pilot pressure reducing valve for easy exhaust control comprises: a valve body 1, two sides of the valve body 1 are respectively connected with an air inlet 101 and an air outlet 102, an exhaust pressure reducing mechanism 2, and the exhaust pressure reducing mechanism 2 for quickly adjusting the reduced pressure and exhaust inside the valve body 1 is arranged on one side of the valve body 1, wherein the exhaust pressure reducing mechanism 2 comprises an active chamber 21 opened in the valve body 1, one side of the active chamber 21 is provided with a connecting pipe 22, a replacement component 23 is provided between the connecting pipe 22 and the active chamber 21, and pressure reducing components 24 are provided on both sides of the connecting pipe 22. Gas can pass through the valve body 1 through the air inlet 101 and the air outlet 102, and when passing through the valve body 1, the exhaust pressure reducing mechanism 2 can be used to relieve the pressure and exhaust the gas when the pressure of the gas passing through exceeds a threshold value, and when the pressure changes greatly, the pressure relief value can be flexibly adjusted through the pressure reducing component 24, thereby making the use range of the pressure reducing valve wider and the exhaust effect better, and when the pressure reducing component 24 is damaged due to wear, the pressure reducing component 24 can also be quickly replaced by the replacement component 23, which is very convenient.

[0025] like Figure 2 and Figure 3 As shown, the replacement component 23 includes a connection block 231 fixedly mounted on one side of the connection pipe 22, the connection block 231 is slidably connected to the valve body 1, and the connection block 231 is located on one side of the active chamber 21, and two connection ports 232 are penetrated through the surface of the connection block 231, and two positioning rods 233 are slidably mounted on one side of the valve body 1, and the two positioning rods 233 penetrate the two connection ports 232, and one end of the two positioning rods 233 is fixedly connected with a screw 234, and the two screws 234 are both threadedly connected to the valve body 1, and the connection block 231 is sealingly slidably connected to the valve body 1. When the pressure reducing component 24 needs to be replaced, it can be replaced by By rotating the two positioning rods 233 and allowing the two positioning rods 233 to synchronously drive the corresponding screw rods 234 to rotate, the two positioning rods 233 can be separated from the interior of the valve body 1, and by allowing the two positioning rods 233 to move out of the connecting block 231, the connecting block 231 can be separated from the valve body 1. It is very convenient to disassemble and replace the pressure reducing assembly 24. A flow port is provided on one side of the connecting block 231. The interior of the active chamber 21 and the connecting pipe 22 are connected to each other through the flow port. The gas can enter the interior of the active chamber 21 through the air inlet 101, and enter the interior of the connecting pipe 22 through the flow port when the pressure is released, and then the pressure is reduced by the pressure reducing assembly 24.

[0026] like Figure 2 and Figure 4 As shown, the decompression assembly 24 includes a decompression chamber 241 fixedly installed at both ends of the connecting pipe 22, a first spring 243 is arranged inside the decompression chamber 241, one end of the first spring 243 is fixedly connected to a piston plate 244, the piston plate 244 is slidably connected to the inner wall of the connecting pipe 22, one side of the connecting pipe 22 is fixedly installed with two exhaust channels 245, the two exhaust channels 245 are respectively located on one side of the two piston plates 244, one side of the two exhaust channels 245 are fixedly connected with an exhaust pipe 246, the connecting block 231 is located between the two piston plates 244, When the pressure exceeds the threshold, the excess gas can enter the connecting pipe 22 through the connecting block 231 and move through the piston plates 244 on both sides. When the piston plates 244 move, the exhaust channel 245 will be gradually opened, and the gradually opened exhaust channel 245 can increase the pressure relief amount, so as to adapt. When the piston plate 244 moves, the first spring 243 is squeezed synchronously. When the pressure relief is completed, the first spring 243 is reset to synchronously reset the piston plate 244. It is very convenient. The decompression assembly 24 also includes a movable member arranged on one side of the decompression chamber 241. The plug rod 242, one end of the piston rod 242 extends into the interior of the decompression chamber 241, one end of the piston rod 242 is threadedly connected to the inner wall of the decompression chamber 241, the two piston rods 242 are respectively located on one side of the two piston plates 244, and one end of the two piston rods 242 is rotatably connected to the adjacent first spring 243. When the pressure relief resistance needs to be adjusted, the piston rod 242 can be rotated to allow one side of the piston rod 242 to move with the thread of the inner wall of the decompression chamber 241, so that the piston rod 242 can be driven to move, and the piston rod 242 can synchronously push the piston plate 244 to move. By changing the distance between the two piston plates 244, the gas entering the connecting pipe 22 needs to push the piston plate 244 to move a greater distance to open the exhaust channel 245 for pressure relief, thereby quickly adjusting the pressure relief resistance, and the piston rods 242 on both sides can set different pressure relief resistances. The exhaust channel 245 is a strip channel, and one end of the exhaust pipe 246 is connected to the outside world. The strip exhaust channel 245 can better increase the connecting space with the inside of the connecting pipe 22 as the piston plate 244 opens, making the pressure relief adjustment more stable.

[0027] like Figure 2 and Figure 4As shown, an adjusting block 25 is provided inside the active chamber 21, and a vent hole 26 is provided on one side of the adjusting block 25, and one side of the adjusting block 25 is slidably connected to the inner wall of the active chamber 21, and one side of the adjusting block 25 is fixedly connected to the inner top wall of the active chamber 21 through a second spring 27, and one side of the adjusting block 25 is located above the air inlet 101 and is sealed and slidably connected to the inside of the active chamber 21, and a certain gap is left between the adjusting block 25 and the active chamber 21, and when the gas enters the inside of the active chamber 21 and the pressure is normal, it can flow to the air outlet 102 through the gap between the adjusting block 25 and the active chamber 21 for use, and the vent hole 26 is a narrow channel, and the adjusting block 25 is fixedly connected to the inner top wall of the active chamber 21 through a second spring 27. One side of the node block 25 is located above the air inlet 101, and a piston plate 28 is fixedly installed on the surface of the adjusting block 25. The piston plate 28 is set to a semicircular shape and is located on one side of the air outlet 102. The gas enters the air outlet 102 through the bottom of the piston plate 28 and flows. When the pressure at the air inlet 101 of the valve body 1 initially increases, the adjusting block 25 can be squeezed to move, so that the adjusting block 25 rises and synchronously drives the piston plate 28 to move, so as to gradually open the air outlet 102. In this way, the pressure of the gas passing through the valve body 1 can be maintained, and when the pressure at the air inlet 101 increases, it is very convenient to perform preliminary adjustments.

[0028] When the utility model is in use, when the pressure reducing assembly 24 needs to be replaced, the two positioning rods 233 can be rotated to allow the two positioning rods 233 to synchronously drive the corresponding screw rod 234 to rotate, so that the two positioning rods 233 can be separated from the inside of the valve body 1, and the two positioning rods 233 can be moved out of the connecting block 231, so that the connecting block 231 can be separated from the valve body 1, and the pressure reducing assembly 24 can be disassembled and replaced very conveniently. When the pressure exceeds the threshold, the excess gas can enter the inside of the connecting pipe 22 through the connecting block 231 and move through the piston plates 244 on both sides. When the piston plates 244 move, the exhaust channel 245 will be gradually opened, and the gradually opened exhaust channel 245 can increase the pressure relief amount, thereby adapting. When the piston plate 244 moves, the first spring 243 is squeezed synchronously. When the pressure relief is completed, the first spring 243 is reset to reset the piston plate 244 synchronously, which is very convenient. When the pressure relief resistance needs to be adjusted, the piston rod 242 can be rotated to make one side of the piston rod 242 move with the inner wall thread of the decompression chamber 241, so as to drive the piston rod 242 to move, and make the piston rod 242 synchronously push the piston plate 244 to move. By changing the distance between the two piston plates 244, the gas entering the connecting pipe 22 needs to push the piston plate 244 to move a greater distance to open the exhaust channel 245 for pressure relief, thereby quickly adjusting the pressure relief resistance, and different pressure relief resistances can be set for the piston rods 242 on both sides.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double pilot pressure reducing valve for easy exhaust control, characterized in that: include: A valve body (1), wherein two sides of the valve body (1) are respectively connected to an air inlet (101) and an air outlet (102); An exhaust pressure reducing mechanism (2), used for quickly adjusting the pressure reducing exhaust inside the valve body (1), the exhaust pressure reducing mechanism (2) being arranged on one side of the valve body (1); The exhaust pressure reducing mechanism (2) comprises an active chamber (21) opened inside the valve body (1), a connecting pipe (22) is provided on one side of the active chamber (21), a replacement component (23) is provided between the connecting pipe (22) and the active chamber (21), and pressure reducing components (24) are provided on both sides of the connecting pipe (22); The replacement component (23) comprises a connection block (231) fixedly mounted on one side of the connection pipe (22), the connection block (231) being slidably connected to the valve body (1), and the connection block (231) being located on one side of the movable chamber (21), and two connection ports (232) being provided through the surface of the connection block (231), and two positioning rods (233) being slidably mounted on one side of the valve body (1), the two positioning rods (233) being provided through the two connection ports (232), and one end of the two positioning rods (233) being fixedly connected to a screw rod (234), and the two screw rods (234) being threadedly connected to the valve body (1), and a flow port being provided through one side of the connection block (231), and the interior of the movable chamber (21) and the connection pipe (22) being communicated with each other through the flow port; The decompression assembly (24) comprises a decompression chamber (241) fixedly mounted on both ends of the connecting pipe (22); a first spring (243) is arranged inside the decompression chamber (241); one end of the first spring (243) is fixedly connected to a piston plate (244); the piston plate (244) is slidably connected to the inner wall of the connecting pipe (22); two exhaust channels (245) are fixedly mounted on one side of the connecting pipe (22); the two exhaust channels (245) are respectively located on one side of two piston plates (244); one side of the two exhaust channels (245) is fixedly connected to an exhaust pipe (246); and the connecting block (231) is located between the two piston plates (244); The decompression assembly (24) further comprises a piston rod (242) arranged on one side of the decompression chamber (241), one end of the piston rod (242) extending into the interior of the decompression chamber (241), one end of the piston rod (242) being threadedly connected to the inner wall of the decompression chamber (241), the two piston rods (242) being respectively located on one side of the two piston plates (244), and one end of the two piston rods (242) being rotatably connected to the adjacent first spring (243).

2. A dual-pilot pressure reducing valve for easy exhaust control according to claim 1, characterized in that: The exhaust channel (245) is a strip-shaped channel, and one end of the exhaust pipe (246) is connected to the outside.

3. A dual-pilot pressure reducing valve for easy exhaust control according to claim 1, characterized in that: An adjusting block (25) is disposed inside the movable chamber (21), a vent hole (26) is formed through one side of the adjusting block (25), one side of the adjusting block (25) is slidably connected to the inner wall of the movable chamber (21), and one side of the adjusting block (25) is fixedly connected to the inner top wall of the movable chamber (21) via a second spring (27).

4. A dual-pilot pressure reducing valve for easy exhaust control according to claim 3, characterized in that: One side of the regulating block (25) is located above the air inlet (101), a piston plate (28) is fixedly mounted on the surface of the regulating block (25), the piston plate (28) is arranged in a semicircular shape, and the piston plate (28) is located on one side of the air outlet (102).

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