CN213393826U - Pressure reducing valve with damping and anti-whistling functions - Google Patents
Pressure reducing valve with damping and anti-whistling functions Download PDFInfo
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- CN213393826U CN213393826U CN202021943187.6U CN202021943187U CN213393826U CN 213393826 U CN213393826 U CN 213393826U CN 202021943187 U CN202021943187 U CN 202021943187U CN 213393826 U CN213393826 U CN 213393826U
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- pressure reducing
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Abstract
The utility model relates to a take damping anti-whistle relief pressure valve solves the problem that the high frequency drunkenness can produce the noise of whistling about the valve rod of current diaphragm formula relief pressure valve. This device includes the valve body, and valve body upper portion is equipped with the diaphragm, and the diaphragm top is equipped with pressure regulating mechanism, and the diaphragm below is cavity under the diaphragm, is equipped with the valve plate under the input port of valve body and the diaphragm between the cavity, and the valve plate is equipped with the mesopore, and the valve rod is worn to be equipped with in the valve plate mesopore, and diaphragm lower surface middle part is equipped with the kicking block of establishing the valve rod upper end to pushing up downwards, the below of valve rod is equipped with and holds the seatpad, the upper portion that holds the seatpad is equipped with the damping piece, the lower extreme from the top down of valve rod is worn to establish in. The utility model discloses the tail end of valve rod is embraced and is pressed from both sides and set up the damping piece, and valve rod and damping piece can relative slip, nevertheless have certain damping force, can reduce the frequency and the range of drunkenness about the valve rod, reduce the air current shearing action of valve plate mesopore position, eliminate and cry the noise.
Description
Technical Field
The utility model belongs to the valve field relates to a relief pressure valve structure, in particular to take damping anti-whistle relief pressure valve.
Background
The pressure reducing valve is a valve for releasing the high-pressure gas in the high-pressure gas tank to output at a stable pressure. The principle of the diaphragm type pressure reducing valve is that pressure is applied to the upper portion of a diaphragm, the diaphragm is pushed downwards, a valve rod is pushed downwards to enable the valve rod to be separated from a valve plate, the valve is opened, gas pressure at the output end of the pressure reducing valve is applied to the lower portion of the diaphragm, when the pressure below the diaphragm is balanced with the pressure above the diaphragm, the valve rod is reset and sealed with the valve plate, and the output end of the pressure reducing valve is enabled to output airflow at stable pressure. The air pressure at the output end of the pressure reducing valve is in the process of continuously fluctuating up and down at the set air pressure, and the diaphragm is of an elastic structure and can generate high-frequency vibration when the output pressure fluctuates, so that the valve rod moves in a high frequency up and down direction, the interface of the valve rod and the valve plate shears air flow, and squealing noise is generated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the problem that the high frequency drunkenness can produce the noise of whistling about the valve rod of current diaphragm formula relief pressure valve, provide a take damping to prevent the relief pressure valve of whistling, apply the damping to the valve rod, reduce valve rod drunkenness frequency, eliminate the noise of whistling.
The purpose of the utility model is mainly realized by the following scheme: the utility model provides a take damping anti-chirping's relief pressure valve, includes the valve body, and valve body upper portion is equipped with the diaphragm, and the diaphragm top is equipped with pressure regulating mechanism, and the diaphragm below is cavity under the diaphragm, and the cavity is connected the input port and the delivery outlet of valve body respectively under the diaphragm, is equipped with the valve plate under the input port of valve body and the diaphragm between the cavity, and the valve plate is equipped with the mesopore, and valve rod, its characterized in that are worn to be equipped with in: the valve rod middle part outwards forms annular bulge, and annular bellied upper surface is for the valve rod conical surface with valve plate mesopore matching, and diaphragm lower surface middle part is equipped with the kicking block of establishing the valve rod upper end to pushing down, the below of valve rod is equipped with holds the seatpad, the upper portion that holds the seatpad is equipped with the damping piece, holds seatpad and damping piece and is equipped with the mesopore of lining up, the lower extreme from the top down of valve rod wears to establish in proper order in the mesopore of damping piece and holding the seatpad, and the valve rod overlaps in annular bellied below and is equipped with reset spring, and the reset spring top is established between annular bulge. In the device, the damping block is arranged at the tail end of the valve rod on the upper surface of the bearing pad, the damping block is clamped on the valve rod and is fixedly arranged on the bearing pad by the top of the reset spring, the damping block and the valve rod can slide relatively, but certain damping force is provided, when the output port air pressure floats up and down to drive the module to bounce up and down, the frequency and amplitude of the vertical movement of the valve rod can be reduced, the air flow shearing at the position of the valve plate is reduced, and the squealing noise is eliminated.
Preferably, the damping block is provided with an elastic groove which is opened along the radial direction. The elastic groove enables the damping block to be clamped on the valve rod inwards.
Preferably, the damping block is made of plastic, and further the damping block is made of polytetrafluoroethylene. The fluoroplastic has good lubricity, and ensures that the valve rod slides smoothly when the valve rod is held tightly to generate damping.
Preferably, the lower surface of the damping block is a conical convex block, and the center of the upper surface of the bearing seat cushion is correspondingly provided with a conical concave.
Preferably, the circumference of the bearing seat cushion is square, corners of the square circumference of the bearing seat cushion are rounded, the valve body is embedded with the bearing seat cushion and is a circular cavity wall, and a ventilation gap is formed between the square circumference of the bearing seat cushion and the side edge of the circular cavity wall of the valve body. The ventilation gap is communicated with the upper part and the lower part of the cushion bearing pad, so that the air pressure balance is ensured.
Preferably, a nozzle with an increased diameter is arranged above the valve plate, and the upper end of the valve rod is higher than the upper end of the nozzle.
Preferably, an upper cover is arranged above the diaphragm, a lower cover is arranged below the diaphragm, and the periphery of the diaphragm is hermetically clamped by the upper cover and the lower cover.
Preferably, the middle of the upper surface of the diaphragm is provided with a flat plate, the ejector block penetrates through the diaphragm and is fixed on the flat plate, the pressure regulating spring is arranged above the flat plate, the adjusting knob is arranged above the pressure regulating spring, and the adjusting knob is propped against the pressure regulating spring through a screw rod structure.
Preferably, the valve stem central axis is aligned with the diaphragm central axis.
The utility model discloses the tail end of valve rod is embraced and is pressed from both sides and set up the damping piece, and valve rod and damping piece can relative slip, nevertheless have certain damping force, can reduce the frequency and the range of drunkenness about the valve rod, reduce the air current shearing action of valve plate mesopore position, eliminate and cry the noise.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.
Figure 3 is a top view of the damping block of the present invention.
Fig. 4 is a top view of the cushion of the present invention.
Illustration of the drawings: 1. adjusting knob, 2, screw rod structure, 3, pressure regulating spring, 4, flat plate, 5, ejector block, 6, diaphragm, 7, upper cover, 8, lower cover, 9, input port, 10, output port, 11, nozzle, 12, valve plate, 13, valve rod, 14, annular protrusion, 15, reset spring, 16, damping block, 17, bearing pad, 18, elastic groove, 19, cone is recessed, 20, diaphragm lower cavity.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b): a pressure reducing valve with damping anti-squeal, as shown in figure 1. The device comprises a valve body, wherein a diaphragm 6 is arranged on the upper portion of the valve body, a pressure regulating mechanism is arranged above the diaphragm, an upper cover 7 is arranged above the diaphragm 6, a lower cover 8 is arranged below the diaphragm, and the periphery of the diaphragm 6 is hermetically clamped by the upper cover 7 and the lower cover 8. The diaphragm 6 and the lower cover 8 form a diaphragm lower cavity 20 therebetween. The upper surface middle part subsides of diaphragm 6 are equipped with flat board 4, and diaphragm lower surface center is equipped with kicking block 5, and kicking block 5 passes diaphragm 6 to be fixed on flat board 4, and flat board 4 top is equipped with pressure regulating spring 3, and pressure regulating spring's top is equipped with adjust knob 1, and adjust knob passes through 2 tops of lead screw structure and establishes pressure regulating spring.
The lower diaphragm cavity 20 is connected with the input port 9 and the output port 10 of the valve body respectively. As shown in fig. 2, a valve plate 12 is arranged between the input port 9 of the valve body and the diaphragm lower cavity 20, the valve plate is provided with a central hole, a valve rod 13 penetrates through the central hole of the valve plate, an annular bulge 14 is formed at the middle part of the valve rod outwards, and the upper surface of the annular bulge is a valve rod conical surface matched with the central hole of the valve plate. The nozzle 11 with the increased caliber is arranged above the valve plate 12, the upper end of the valve rod 13 is higher than the upper end of the nozzle 11, and the upper end of the valve rod 13 is arranged on the top block 5 on the lower surface of the diaphragm in a propping mode. The valve rod 13 central axis is aligned with the central axis of the diaphragm 6. The below of valve rod 13 is equipped with holds the seatpad 17, the upper portion of holding the seatpad is equipped with annular damping piece 16, and bearing pad 17 and damping piece 16 are equipped with the mesopore of aligning, the lower extreme from the top down of valve rod 13 wears to establish in the mesopore of damping piece 16 and bearing pad 17 in proper order, and valve rod 13 overlaps in the bellied below of annular and is equipped with reset spring 15, and the reset spring top is established between annular arch and damping piece.
The damping block 16 is made of teflon, and as shown in fig. 3, the damping block 16 is provided with an elastic groove 18 which is opened along the radial direction. As shown in fig. 4, the lower surface of the damping block 16 is a conical protrusion, and the center of the upper surface of the seat cushion 17 is correspondingly provided with a conical recess 19 for aligning and matching the damping block and the seat cushion.
The valve rod and the damping block can slide relatively, but have certain damping force, so that the frequency and amplitude of the vertical movement of the valve rod can be reduced, the airflow shearing action of the hole position in the valve plate is reduced, and the squealing noise is eliminated.
Claims (10)
1. The utility model provides a take damping anti-chirping's relief pressure valve, includes the valve body, and valve body upper portion is equipped with the diaphragm, and the diaphragm top is equipped with pressure regulating mechanism, and the diaphragm below is cavity under the diaphragm, and the cavity is connected the input port and the delivery outlet of valve body respectively under the diaphragm, is equipped with the valve plate under the input port of valve body and the diaphragm between the cavity, and the valve plate is equipped with the mesopore, and valve rod, its characterized in that are worn to be equipped with in: the valve rod middle part outwards forms annular bulge, and annular bellied upper surface is for the valve rod conical surface with valve plate mesopore matching, and diaphragm lower surface middle part is equipped with the kicking block of establishing the valve rod upper end to pushing down, the below of valve rod is equipped with holds the seatpad, the upper portion that holds the seatpad is equipped with the damping piece, holds seatpad and damping piece and is equipped with the mesopore of lining up, the lower extreme from the top down of valve rod wears to establish in proper order in the mesopore of damping piece and holding the seatpad, and the valve rod overlaps in annular bellied below and is equipped with reset spring, and the reset spring top is established between annular bulge.
2. The pressure reducing valve with damping anti-chirp function as claimed in claim 1, wherein: the damping block is provided with an elastic groove which is arranged along the radial direction.
3. The pressure reducing valve with damping anti-chirp function as claimed in claim 1, wherein: the damping block is made of plastic.
4. A damped whistle relief valve as set forth in claim 3 in which: the damping block is made of polytetrafluoroethylene.
5. A pressure reducing valve with damping anti-chirp according to claim 1 or 2 or 3 or 4, wherein: the lower surface of the damping block is a conical convex block, and the center of the upper surface of the bearing seat cushion is correspondingly provided with a conical concave.
6. A pressure reducing valve with damping anti-chirp according to claim 1 or 2 or 3 or 4, wherein: the periphery of the bearing seat cushion is square, the corners of the square periphery of the bearing seat cushion are chamfered, the valve body is embedded in the bearing seat cushion and is a circular cavity wall, and a ventilation gap is formed between the square periphery of the bearing seat cushion and the side edge of the circular cavity wall of the valve body.
7. A pressure reducing valve with damping anti-chirp according to claim 1 or 2 or 3 or 4, wherein: the valve plate is provided with a nozzle with an increased caliber above the valve plate, and the upper end of the valve rod is higher than the upper end of the nozzle.
8. A pressure reducing valve with damping anti-chirp according to claim 1 or 2 or 3 or 4, wherein: an upper cover is arranged above the diaphragm, a lower cover is arranged below the diaphragm, and the periphery of the diaphragm is hermetically clamped by the upper cover and the lower cover.
9. A pressure reducing valve with damping anti-chirp according to claim 1 or 2 or 3 or 4, wherein: the diaphragm is characterized in that a flat plate is attached to the middle of the upper surface of the diaphragm, the ejector block penetrates through the diaphragm and is fixed on the flat plate, a pressure regulating spring is arranged above the flat plate, an adjusting knob is arranged above the pressure regulating spring, and the adjusting knob is propped through a screw rod structure and is provided with the pressure regulating spring.
10. A pressure reducing valve with damping anti-chirp according to claim 1 or 2 or 3 or 4, wherein: the valve rod central axis is aligned with the central axis of the diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021943187.6U CN213393826U (en) | 2020-09-08 | 2020-09-08 | Pressure reducing valve with damping and anti-whistling functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021943187.6U CN213393826U (en) | 2020-09-08 | 2020-09-08 | Pressure reducing valve with damping and anti-whistling functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213393826U true CN213393826U (en) | 2021-06-08 |
Family
ID=76215053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021943187.6U Active CN213393826U (en) | 2020-09-08 | 2020-09-08 | Pressure reducing valve with damping and anti-whistling functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213393826U (en) |
-
2020
- 2020-09-08 CN CN202021943187.6U patent/CN213393826U/en active Active
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