CN211501782U - Miniature constant pressure reducing device - Google Patents
Miniature constant pressure reducing device Download PDFInfo
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- CN211501782U CN211501782U CN201922145458.7U CN201922145458U CN211501782U CN 211501782 U CN211501782 U CN 211501782U CN 201922145458 U CN201922145458 U CN 201922145458U CN 211501782 U CN211501782 U CN 211501782U
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Abstract
Miniature constant voltage pressure relief device, including the valve block, the ring channel has been seted up on the inside left side of valve block, go up valve hole and lower valve opening, the ring channel, go up and be equipped with the case in the valve hole, be equipped with the lower valve core in the lower valve opening, the lower valve core lower extreme inlays and is equipped with sealed the pad, lower valve opening bottom is provided with and seals the sealed complex boss of pad crimping, be provided with pressure reducing spring in the ring channel, pressure reducing spring's upper end and last valve core lower surface roof pressure cooperation, first interface has been seted up to valve block bottom, the second interface has been seted up to valve block front side lower part, the. The utility model discloses principle science, compact structure are a section can the balanced pressure relief device who stably exports constant pressure, and is small, and the integrated level is high, can be arranged in gas circuit decompression steady voltage system, in the operating pressure within range that allows, with high-pressure gas's pressure drop to required pressure within range.
Description
Technical Field
The utility model belongs to the technical field of gas circuit system steady voltage pressure regulating, concretely relates to miniature constant voltage pressure relief device.
Background
Because of the compressibility of the gas, no matter in the living field or the production field, the gas is always stored in a compression mode, and when the gas storage device is used, the gas is slowly released in a decompression mode, so that the gas flows out stably. Therefore, in the use process of the compressed gas, a set of constant-pressure decompression equipment is always needed to decompress the compressed high-pressure gas, so that the gas pressure is reduced, and the normal use pressure is met.
The size of the pressure reducing device is generally determined according to the size of the pressure regulating range, and the higher the pressure is, the larger the regulating range is, the larger the volume of the pressure reducing device is, and the heavier the weight of the pressure reducing device is. The gas output pressure is constant and does not exceed 1Mpa, even if the pressure reduction device is used, the size and the weight of the pressure reduction device are not satisfactory, and the pressure reduction device cannot be used in a system with higher integration level. The gas path adjusting system is too light and miniaturized to be bloated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a compact structure, small, light in weight, save space, reliable strong miniature constant voltage pressure relief device.
In order to solve the technical problem, the utility model adopts the following technical scheme: a miniature constant-pressure reducing device comprises a valve block which is cuboid in overall appearance, wherein an annular groove, an upper valve hole and a lower valve hole are formed in the left side inside the valve block, the central lines of the annular groove, the upper valve hole and the lower valve hole are superposed, the central line is arranged along the vertical direction, the diameter of the upper valve hole is larger than the outer diameter of the annular groove, the inner diameter of the annular groove is larger than the diameter of the lower valve hole, the upper ends of the annular groove and the lower valve hole are communicated with the lower end of the upper valve hole, an upper valve core is arranged in the upper valve hole, an upper sealing ring which is in sliding sealing fit with the inner ring of the upper valve hole is arranged on the excircle of the upper valve core, a lower valve core is arranged in the lower valve hole, a lower sealing ring which is in sliding sealing fit with the inner ring of the lower valve hole is arranged on the excircle of the lower valve core, the upper sealing ring and, the lower part of the lower valve core is provided with an air hole communicated with the central hole and the lower cavity in the radial direction, the lower end of the lower valve core is embedded with a sealing gasket, the bottom of the lower valve hole is provided with a boss in press fit with the sealing gasket, a pressure reducing spring is arranged in the annular groove, the upper end of the pressure reducing spring is in press fit with the lower surface of the upper valve core, the bottom of the valve block is provided with a first interface, the lower part of the front side of the valve block is provided with a second interface, the upper part of the front side of the valve block is provided with a third interface, the first interface is communicated with the second interface through a first air flow channel, the first air flow channel is communicated with the lower cavity through a second air flow channel, the upper port of the second air flow channel is positioned in the middle of the upper.
The valve block is assembled by an upper part and a lower part in a split mode, the bottom of the left side of the upper part of the valve block is in threaded and sealed connection with the top of the right side of the lower part of the valve block, the upper valve hole is located in the inner portion of the upper part of the valve block, and the lower valve hole and the annular groove are located in the lower part of the valve block.
Set up jaggedly between the lower part right side of the upper portion right side of valve piece and valve piece, penetrating mounting hole about having seted up on the upper portion right side of valve piece, the lower part right side upper surface of valve piece be provided with the mounting hole fourth interface that corresponds from top to bottom, the lower part front side of valve piece is opened and is equipped with the fifth interface, the fifth interface rear end passes through fourth air current way and fourth interface lower extreme intercommunication.
And a pressure sensor penetrates through the mounting hole, and the lower end of the pressure sensor penetrates through the notch to be assembled in the fourth interface.
The valve block is internally in threaded connection with a mechanical rotary rod along the front-back horizontal direction, the front end of the mechanical rotary rod extends into the first air flow channel and is in sealing fit with the first air flow channel, and the front end of the mechanical rotary rod is positioned between the lower port of the second air flow channel and the first interface.
Adopt above-mentioned technical scheme, the utility model discloses a balanced principle of mechanical pressure system through atmospheric pressure, spring force, frictional force, atmospheric pressure, the balanced linkage of mechanical structure relative pressure, reaches the invariable purpose of regulation output pressure.
The utility model discloses have five interfaces and a mechanical swing arm, first interface is external air supply interface (connect the high-pressure gas source end, for example high-pressure gas circuit or gas cylinder), provides the gas supply of higher pressure for the device is inside.
The second interface is a pressure gauge mounting interface and is used for mounting a pressure gauge and detecting and observing the gas pressure of the high-pressure gas source end; the second interface can also provide sufficient gas supply for the whole high-pressure gas circuit or the gas cylinder, and when the gas pressure is insufficient, the pressure gauge of the second interface is taken down, and the required gas is timely supplemented to the high-pressure gas circuit or the gas cylinder through the second interface; the gas is directly supplied to the gas cylinder under the condition that a connecting pipeline of the pressure reducing device and the gas cylinder is not removed, the operation flow of the gas path system is simplified, and frequent disassembly of the gas path pipeline is reduced.
The third interface is a pressure output interface (low pressure) that is directly connected to the location where the lower pressure gas is to be used.
The fourth interface is used for connecting pressure sensor, and the air inlet when fifth interface adopts pressure sensor to detect gas circuit pressure can be with third interface connection, and pressure sensor detects the size of output gas pressure.
The mechanical rotary rod is used for controlling the on-off of the whole gas circuit, when the mechanical rotary rod is opened, the first interface, the first gas flow channel, the second gas flow channel, the lower cavity, the gas hole, the central hole, the upper cavity and the third interface are communicated, and the whole gas circuit system of the device is communicated. When the mechanical rotary rod is closed, the first air flow channel is plugged by the front end of the mechanical rotary rod, the whole air path system is closed from the high-pressure air source end, no air pressure exists in the device, and the on-off of the air path is controlled from the source.
The utility model discloses built-in last case and lower valve core constitute a T style of calligraphy case structure, and sealed the pad adopts the polytetrafluoroethylene gasket, and last sealing washer and lower sealing washer separate the last valve hole that communicates and the inside top-down of lower valve hole for last cavity, well cavity and lower cavity in proper order, go up the cavity and be linked together with the third interface, and well cavity communicates with each other with external atmosphere, and lower cavity communicates with each other with the high pressurized air source air feed end. The sealing gasket and the boss at the bottom of the lower cavity form end face sealing, when the sealing gasket and the boss are tightly pressed, the second air flow channel is isolated from the lower cavity, and when the sealing gasket and the boss are separated, the air path channel is opened.
The utility model discloses be provided with pressure relief spring in the ring channel, pressure relief spring's upper end and lower case lower surface roof pressure cooperation, pressure relief spring is used for the relative motion between balanced case (last case and lower case) and the valve piece, pressure relief spring all is in compression state at whole in-process, gas pressure, spring force, frictional force, atmospheric pressure, the supporting force between case and the valve piece constitutes the balanced element of system jointly, along with gas pressure's change, reach the product scale of not equidimension between each element, thereby realize the relative motion of case, play the effect of adjusting gas output pressure.
The utility model adopts the design scheme of dynamic pressure balance, the upper valve core moves up and down under the action of force to realize whether the air supply of the air source is needed or not, when the air pressure in the upper cavity is larger than the elasticity of the pressure reducing spring, namely when the air pressure in the device is larger than the air pressure needed to be used (the air pressure of the third interface is higher), the valve core moves downwards under the comprehensive action of each force, the sealing gasket is tightly pressed on the boss, the air supply of the high-pressure air source is cut off, and the pressure in the upper cavity is; when the air pressure in the upper cavity is smaller than the air pressure required to be used (the air pressure of the third interface is lower), the valve core moves upwards under the action of the elastic force of the pressure reducing spring, the second air flow channel is communicated with the lower cavity, the air supply of the air source is recovered, the pressure in the upper cavity is increased, and the air output pressure of the third interface is relatively constant in the circulation mode.
The utility model discloses a relief spring performance parameter is through the precision calculation, constitutes the frame of balanced system pressure with valve block and corresponding cavity, makes output gas pressure ability dynamic balance in application range to invariable output under the condition of realizing effective pressure supply.
To sum up, the utility model discloses principle science, compact structure are a section can the balanced pressure relief device who stably exports constant pressure, and is small, and the integrated level is high, can be used to among the gas circuit decompression steady voltage system, in the operating pressure scope that allows, falls to required pressure range with high-pressure gas's pressure.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention;
fig. 2 is a vertical cross-sectional view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figures 1 and 2, the miniature constant pressure reducing device of the utility model comprises a valve block 1 with a cuboid overall appearance, a ring-shaped groove 2, an upper valve hole and a lower valve hole are arranged on the left side inside the valve block 1, the center lines of the ring-shaped groove 2, the upper valve hole and the lower valve hole are coincided and are arranged along the vertical direction, the diameter of the upper valve hole is larger than the outer diameter of the ring-shaped groove 2, the inner diameter of the ring-shaped groove 2 is larger than the diameter of the lower valve hole, the upper ends of the ring-shaped groove 2 and the lower valve hole are both communicated with the lower end of the upper valve hole, an upper valve core 5 is arranged in the upper valve hole, an upper sealing ring 6 which is in sliding sealing fit with the inner ring of the upper valve hole is arranged on the excircle of the upper valve core 5, a lower valve core 7 is arranged in the lower valve hole, a lower sealing ring 8 which is in sliding sealing fit with the, the upper end of the lower valve core 7 is fixedly connected with the lower surface of the upper valve core 5, a central hole 12 which penetrates through the upper valve core 5 and is communicated with the upper cavity 9 is arranged in the lower part of the lower valve core 7, an air hole 13 which is communicated with the central hole 12 and the lower cavity 11 is arranged in the radial direction at the lower part of the lower valve core 7, a sealing gasket 14 is embedded at the lower end of the lower valve core 7, a boss which is in press-fit and sealing fit with the sealing gasket 14 is arranged at the bottom of the lower valve hole, a pressure reducing spring 16 is arranged in the annular groove 2, the upper end of the pressure reducing spring 16 is in press-fit with the lower surface of the upper valve core 5, a first connector 17 is arranged at the bottom of the valve block 1, a second connector 18 is arranged at the lower part of the front side of the valve block 1, a third connector 19 is arranged at the upper part of the front side of the valve block 1, the third port 19 communicates with the upper chamber 9 through a third gas flow duct 22, and the middle chamber 10 communicates with the environment outside the valve block 1 through an elongated hole.
The valve block 1 is formed by assembling an upper part and a lower part in a split mode, the bottom of the left side of the upper part of the valve block 1 is in threaded and sealed connection with the top of the right side of the lower part of the valve block 1, the upper valve hole is located in the inner portion of the upper part of the valve block 1, and the lower valve hole and the annular groove 2 are located in the lower part of the valve block 1.
The upper portion right side of valve block 1 and the lower part right side of valve block 1 have seted up breach 23 between, and penetrating mounting hole about the upper portion right side of valve block 1 has been seted up, and the lower part right side upper surface of valve block 1 is provided with fourth interface 24 who corresponds from top to bottom with the mounting hole, and the lower part front side of valve block 1 is opened and is equipped with fifth interface 25, and fourth air current channel 26 and the 24 lower extreme of fourth interface are passed through to fifth interface 25 rear end.
A pressure sensor 27 penetrates through the mounting hole, and the lower end of the pressure sensor 27 passes through the notch 23 and is assembled in the fourth port 24.
A mechanical rotary rod 28 is screwed in the valve block 1 along the front-back horizontal direction, the front end of the mechanical rotary rod 28 extends into the first air flow passage 20 and is in sealing fit with the first air flow passage 20, and the front end of the mechanical rotary rod 28 is located between the lower port of the second air flow passage 21 and the first interface 17.
The utility model discloses a balanced principle of mechanical pressure system through atmospheric pressure, spring force, frictional force, atmospheric pressure, the balanced linkage of mechanical structure relative pressure, reaches the invariable purpose of regulation output pressure.
The utility model discloses have five interfaces and a mechanical swing arm 28, first interface 17 is external air supply interface (connect the high-pressure gas source end, for example high-pressure gas circuit or gas cylinder), provides the gas supply of higher pressure for the device is inside.
The second interface 18 is a pressure gauge mounting interface and is used for mounting a pressure gauge and detecting and observing the gas pressure of the high-pressure gas source end; the second interface 18 can also provide sufficient gas supply for the whole high-pressure gas circuit or gas cylinder, when the gas pressure is insufficient, the pressure gauge of the second interface 18 is taken down, and the required gas is timely supplemented to the high-pressure gas circuit or gas cylinder through the second interface 18; the gas is directly supplied to the gas cylinder under the condition that a connecting pipeline of the pressure reducing device and the gas cylinder is not removed, the operation flow of the gas path system is simplified, and frequent disassembly of the gas path pipeline is reduced.
The third port 19 is a pressure output port (low pressure), and the third port 19 is directly connected to a place where a gas of a lower pressure is to be used.
The fourth port 24 is used for connecting the pressure sensor 27, the fifth port 25 is an air inlet when the pressure sensor 27 detects the pressure of the air path, the fifth port 25 can be connected with the third port 19, and the pressure sensor 27 detects the pressure of the output air.
The mechanical rotary rod 28 is used for controlling the on-off of the whole air path, when the mechanical rotary rod 28 is opened, the first interface 17, the first air flow channel 20, the second air flow channel 21, the lower cavity 11, the air hole 13, the central hole 12, the upper cavity 9 and the third interface 19 are communicated, and the whole air path system of the device is communicated. When the mechanical rotary rod 28 is closed, the front end of the mechanical rotary rod 28 seals the first air channel 20, the whole air channel system is closed from a high-pressure air source end, no air pressure exists in the device, and the on-off of the air channel is controlled from the source.
The utility model discloses built-in last case 5 and lower valve core 7 constitute a T style of calligraphy case structure, and sealed 14 adoption polytetrafluoroethylene gaskets seal, and last sealing washer 6 and lower sealing washer 8 separate the last valve hole that communicates and the inside top-down of lower valve hole for last cavity 9, well cavity 10 and lower cavity 11 in proper order, go up cavity 9 and third interface 19 and be linked together, and well cavity 10 communicates with each other with external atmosphere, and lower cavity 11 communicates with each other with the high pressurized air source air feed end. The sealing gasket 14 and a boss at the bottom of the lower cavity 11 form end face sealing, when the sealing gasket 14 and the boss are tightly pressed, the second air flow channel 21 is isolated from the lower cavity 11, and when the sealing gasket 14 and the boss are separated, the air path channel is opened.
The utility model discloses be provided with relief spring 16 in ring channel 2, relief spring 16's upper end and the cooperation of lower surface roof pressure of lower valve element 7, relief spring 16 is used for the relative motion between balanced case (last case 5 and lower valve element 7) and the valve block 1, relief spring 16 all is in compression state at whole in-process, gas pressure, spring force, frictional force, atmospheric pressure, the holding power between case and the valve block 1 constitutes the balanced element of system jointly, along with gas pressure's change, reach the article balance of different degrees between each element, thereby realize the relative motion of case, play the effect of adjusting gas output pressure.
The utility model adopts the design scheme of dynamic pressure balance, the upper valve core 5 moves up and down under the action of force to realize whether the air supply of the air source is needed, when the air pressure in the upper cavity 9 is larger than the elasticity of the pressure reducing spring 16, namely when the air pressure in the device is larger than the air pressure needed to be used (the air pressure of the third interface 19 is higher), the valve core moves downwards under the comprehensive action of each force, the sealing gasket 14 is tightly pressed on the boss, the air supply of the high-pressure air source is cut off, and the pressure in the upper cavity 9 is reduced; when the air pressure in the upper cavity 9 is smaller than the air pressure required to be used (the air pressure of the third interface 19 is lower), the valve core 7 moves upwards under the action of the elastic force of the pressure reducing spring 16, the second air flow channel 21 is communicated with the lower cavity 11, the air supply of the air source is recovered, the pressure in the upper cavity 9 is increased, and the air output pressure of the third interface 19 is relatively constant through circulation.
The utility model discloses a 16 performance parameters of relief spring pass through the precision calculation, constitute the frame of balanced system pressure with valve block 1 and corresponding cavity, make output gas pressure ability dynamic balance in application range to realize invariable output under the condition that effective pressure supplied with.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. Miniature constant voltage pressure relief device, its characterized in that: the valve comprises a valve block with a cuboid overall shape, wherein an annular groove, an upper valve hole and a lower valve hole are formed in the left side inside the valve block, the central lines of the annular groove, the upper valve hole and the lower valve hole are superposed, the central line is arranged along the vertical direction, the diameter of the upper valve hole is larger than the outer diameter of the annular groove, the inner diameter of the annular groove is larger than the diameter of the lower valve hole, the upper ends of the annular groove and the lower valve hole are communicated with the lower end of the upper valve hole, an upper valve core is arranged in the upper valve hole, an upper sealing ring in sliding sealing fit with the inner ring of the upper valve hole is arranged on the excircle of the upper valve core, a lower valve core is arranged in the lower valve hole, a lower sealing ring in sliding sealing fit with the inner ring of the lower valve hole is arranged on the excircle of the lower valve core, the upper sealing ring and the lower sealing ring divide the, the lower part of the lower valve core is provided with an air hole communicated with the central hole and the lower cavity in the radial direction, the lower end of the lower valve core is embedded with a sealing gasket, the bottom of the lower valve hole is provided with a boss in press fit with the sealing gasket, a pressure reducing spring is arranged in the annular groove, the upper end of the pressure reducing spring is in press fit with the lower surface of the upper valve core, the bottom of the valve block is provided with a first interface, the lower part of the front side of the valve block is provided with a second interface, the upper part of the front side of the valve block is provided with a third interface, the first interface is communicated with the second interface through a first air flow channel, the first air flow channel is communicated with the lower cavity through a second air flow channel, the upper port of the second air flow channel is positioned in the middle of the upper.
2. The micro constant pressure relief device according to claim 1, wherein: the valve block is assembled by an upper part and a lower part in a split mode, the bottom of the left side of the upper part of the valve block is in threaded and sealed connection with the top of the right side of the lower part of the valve block, the upper valve hole is located in the inner portion of the upper part of the valve block, and the lower valve hole and the annular groove are located in the lower part of the valve block.
3. The micro constant pressure relief device according to claim 2, wherein: set up jaggedly between the lower part right side of the upper portion right side of valve piece and valve piece, penetrating mounting hole about having seted up on the upper portion right side of valve piece, the lower part right side upper surface of valve piece be provided with the mounting hole fourth interface that corresponds from top to bottom, the lower part front side of valve piece is opened and is equipped with the fifth interface, the fifth interface rear end passes through fourth air current way and fourth interface lower extreme intercommunication.
4. The micro constant pressure relief device according to claim 3, wherein: and a pressure sensor penetrates through the mounting hole, and the lower end of the pressure sensor penetrates through the notch to be assembled in the fourth interface.
5. The micro constant pressure relief device according to claim 1, wherein: the valve block is internally in threaded connection with a mechanical rotary rod along the front-back horizontal direction, the front end of the mechanical rotary rod extends into the first air flow channel and is in sealing fit with the first air flow channel, and the front end of the mechanical rotary rod is positioned between the lower port of the second air flow channel and the first interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922145458.7U CN211501782U (en) | 2019-12-04 | 2019-12-04 | Miniature constant pressure reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922145458.7U CN211501782U (en) | 2019-12-04 | 2019-12-04 | Miniature constant pressure reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211501782U true CN211501782U (en) | 2020-09-15 |
Family
ID=72413256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922145458.7U Active CN211501782U (en) | 2019-12-04 | 2019-12-04 | Miniature constant pressure reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211501782U (en) |
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2019
- 2019-12-04 CN CN201922145458.7U patent/CN211501782U/en active Active
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