CN207421438U

CN207421438U - Micro pressure adjuster

Info

Publication number: CN207421438U
Application number: CN201721581063.6U
Authority: CN
Inventors: 宗鹏举; 王航; 李汶汶
Original assignee: Xuzhou Hongye Instrument Co Ltd
Current assignee: Xuzhou Hongye Instrument Co Ltd
Priority date: 2017-11-23
Filing date: 2017-11-23
Publication date: 2018-05-29
Anticipated expiration: 2027-11-23

Abstract

The utility model discloses a kind of micro pressure adjuster, regulator body includes the voltage regulation part accommodating cavity and pressure maintaining valve accommodating cavity set gradually from top to bottom；Voltage regulation part is equipped in voltage regulation part accommodating cavity, voltage stabilizing valve member is equipped in pressure maintaining valve accommodating cavity, in voltage stabilizing valve member, valve rod, which stretches out valve seat, to be fixed the front end of end face through partition plate and withstands lower spring cup, suction nozzle is fixed on the inlet end of valve seat, filtering plug in suction nozzle withstands valve rod rear end by the pressure-stabilizing spring being placed in valve seat, and the position that valve rod stretches out valve seat fixation end face is arranged valve block；Regulator body lower end is embedded in an air inlet nut, and upper end is arranged with pressure and adjusts lid.The utility model is small and light-weight, when the pressure change in gas cylinder, gap and gas output meeting respective change between valve rod and valve block, due to the presence of pressure-stabilizing spring, the power for being applied to lower spring cup upper surface and the power for being applied to lower spring cup lower surface gently can reach an equalization point, remain stable pressure output.

Description

Micro pressure adjuster

Technical field

The utility model is related to a kind of micro pressure adjusters, belong to gas pressure control field.

Background technology

Pressure regulator is mounted in the bottleneck of pressure gas bomb for controlling the regulating device of outlet pressure, common at present Pressure regulator be one-step pressure regulator, when use, can ensure cylinder outlet pressure stability, however this pressure is adjusted Device can not achieve stepless voltage regulation, and stable output pressure cannot be kept after pressure regulation；In addition, this one-step pressure regulator body Product and weight are larger, very inconvenient when installing and using and dismantling.

The content of the invention

In view of the above-mentioned problems of the prior art, to be to provide a kind of volume, weight smaller for the purpose of this utility model, it can To realize the micro pressure adjuster that stable output pressure can be kept after stepless voltage regulation and pressure regulation.

To achieve the above object, the technical solution adopted in the utility model is：A kind of micro pressure adjuster, including adjusting Device main body, the regulator body include the voltage regulation part accommodating cavity and pressure maintaining valve accommodating cavity set gradually from top to bottom, institute It states and partition plate is equipped between voltage regulation part accommodating cavity and pressure maintaining valve accommodating cavity；Voltage regulation part is equipped in the voltage regulation part accommodating cavity, Voltage regulation part includes upper spring seat, lower spring cup and the pressure spring being folded between upper spring seat, lower spring cup；The voltage stabilizing Voltage stabilizing valve member is equipped in valve accommodating cavity, voltage stabilizing valve member includes valve seat, valve rod and suction nozzle, and the valve rod rear end is placed in valve seat Central through hole in, valve rod stretches out valve seat and fixes the front end of end face through partition plate and lower spring cup is withstood, and the suction nozzle passes through Suction nozzle trim ring is fixed on the inlet end of valve seat, and filtering plug is equipped in suction nozzle, and the filtering plug is by being placed in valve seat Pressure-stabilizing spring withstands valve rod rear end, and the position that valve rod stretches out valve seat fixation end face is arranged valve block；The regulator body lower end is embedding Enter an air inlet nut, upper end is arranged with pressure and adjusts lid, and the pressure adjusts lid and is spun on by screw thread on regulator body, and presses Power adjusts lid and withstands upper spring seat upper surface from top.

Further, the pressure adjusts tops center and is equipped with adjusting screw, and the adjusting screw passes perpendicularly through pressure It adjusts lid and end is contacted with upper spring seat upper surface.Adjusting screw front end can be changed by turning adjusting screw and stretch into pressure The length of lid is adjusted, so as to adjust the output gas pressure standard value of whole device.Further, adjusting screw is equipped with envelope Plate, sealing plate can prevent the random turn adjusting screw of layman from changing output pressure standard value.

Further, locating pin is further included, the locating pin adjusts along edge-perpendicular through pressure and covers and withstand adjuster Main body.Locating pin can adjust lid /V to pressure, and pressure is made, which to adjust lid, can only rotate/enclose, and be screwed into bottom output pressure counterclockwise It is zero, the output pressure of customer requirement can be reached by being screwed into bottom clockwise.

Further, emergency valve seat is further included, the emergency valve seat is mounted on regulator body one side, and connects by first Through hole is connected with pressure maintaining valve accommodating cavity, and the position that emergency valve seat connects with the first intercommunicating pore is equipped with burst disk.When the gas in gas cylinder During body hypertonia, the gap between suction nozzle trim ring and suction nozzle can be strutted, gas directly enters pressure maintaining valve from gap and houses Chamber, and apply pressure to burst disk into the first intercommunicating pore, directly from the two side holes pressure release of emergency valve seat after burst disk rupture.

Further, low pressure gauge outfit is further included, the low pressure gauge outfit is mounted on by plus screw on regulator body, and Voltage regulation part accommodating cavity is connected to by the second intercommunicating pore.After gas enters voltage regulation part accommodating cavity, then pass through the second intercommunicating pore Into low pressure gauge outfit, low pressure gauge outfit measures the output pressure of gases at high pressure.

Further, in order to ensure that sealing is tight, the lower spring cup is arranged with sealing ring, the sealing around its circumferential direction Circle outer ring houses cavity wall close contact with voltage regulation part.

Further, the valve cup ring offers a ring annular groove around its circumferential direction, and annular surface is equipped with a ventilation Hole, the venthole inwardly pass to the central through hole of valve seat.After gas enters central through hole, it can be filled through venthole into annular In space between groove and pressure maintaining valve accommodating cavity, valve seat automatic capturing can be helped during the work time, is more advantageous to valve rod Sealing.

Further, in order to enhance leakproofness, the first O-ring is arranged in the suction nozzle circumferential direction, outside first O-ring Circle is in close contact with suction nozzle trim ring inner surface；The suction nozzle trim ring and pressure maintaining valve house to be arranged in the circumferential direction that cavity wall contacts There is the second O-ring.

In use, by the air inlet nut access gas cylinder gas outlet of micro-actuator, suction nozzle is the thimble of gas cylinder gas outlet Opening starts to supply.Gas is after suction nozzle, filtering plug, into central through hole, and to one upward thrust of valve rod, adjusts Pressure adjusts lid, and pressure adjusts the upper surface that lid transmits force to downwards lower spring cup by upper spring seat, pressure spring, make its to Lower movement opens valve rod, and gas can enter in the gap opened between valve block and valve rod through central through hole, and enters pressure regulation Portions house chamber, then exported through gas outlet.In this process, the power of lower spring cup upper surface and the power meeting of lower surface are applied to Reach a balance, so as to give an output pressure value.

The utility model simple structure, small and weight are light, and installation and removal are convenient, can realize stepless voltage regulation, When the pressure change in gas cylinder, gap and gas output meeting respective change between valve rod and valve block, in the process, due to steady The presence of pressing spring, the power for being applied to lower spring cup upper surface and the power for being applied to lower spring cup lower surface gentle again can reach To an equalization point, so as to remain stable output pressure.

Description of the drawings

Fig. 1 is the front sectional view of the utility model；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the pressure maintaining valve block diagram in Fig. 1；

In figure, I, regulator bodies, I -1, partition plate, 1. air inlet nuts, 2 suction nozzles, 3. suction nozzle trim rings, 4. the oneth O shapes Circle, 5. pressure-stabilizing springs, 6. second O-rings, 7. valve seats, 7a. central through holes, 7b. annular grooves, 7c. ventholes, 8. valve rods, 9. Valve block, 10. sealing rings, 11. lower spring cups, 12. pressure springs, 13. upper spring seats, 14. locating pins, 15. sealing plates, 16. are adjusted Screw, 17. pressure adjust lid, 19. burst disks, 20. first intercommunicating pores, 21. emergency valve seats, 22. filtering plugs, 23. inlet seals Pad, 24. low pressure gauge outfits, the second intercommunicating pores of 24a., 25. plus screw, 26. gas outlets.

Specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in the figure, a kind of micro pressure adjuster, including regulator body I, the regulator body I is included from upper The voltage regulation part accommodating cavity and pressure maintaining valve accommodating cavity set gradually under, the voltage regulation part accommodating cavity and pressure maintaining valve accommodating cavity it Between be equipped with partition plate I -1；Voltage regulation part is equipped in the voltage regulation part accommodating cavity, voltage regulation part includes upper spring seat 13, lower spring Seat 11 and the pressure spring 12 being folded between upper spring seat 13, lower spring cup 11；Voltage stabilizing is equipped in the pressure maintaining valve accommodating cavity Valve member, voltage stabilizing valve member include valve seat 7, valve rod 8 and suction nozzle 2, and 8 rear end of valve rod is placed in the central through hole 7a of valve seat 7 In, valve rod 8, which stretches out valve seat 7, to be fixed the front end of end face through partition plate I -1 and withstands lower spring cup 11, the suction nozzle 2 by into Gas nozzle trim ring 3 is fixed on the inlet end of valve seat 7, and filtering plug 22 is equipped in suction nozzle 2, and the filtering plug 22 is by being placed in valve seat Pressure-stabilizing spring 5 in 7 withstands 8 rear end of valve rod, and the position that valve rod 8 stretches out the fixation of valve seat 7 end face is arranged valve block 9；The adjuster I lower end of main body is embedded in an air inlet nut 1, and upper end is arranged with pressure and adjusts lid 17, and the pressure adjusts lid 17 and is spun on by screw thread On regulator body I, and pressure adjusts lid 17 and withstands 13 upper surface of upper spring seat from top.

Further, the pressure adjusts 17 top center of lid and is equipped with adjusting screw 16, and the adjusting screw 16 is vertically worn Excess pressure adjusts lid 17 and end is contacted with 13 upper surface of upper spring seat.Adjusting screw can be changed by turning adjusting screw 16 The length that pressure adjusts lid 17 is stretched into 16 front ends, so as to adjust the output gas pressure standard value of whole device.Further, Adjusting screw 16 is equipped with sealing plate 15, and sealing plate 15 can prevent the random turn adjusting screw 16 of layman from changing output pressure Standard value.

Further, locating pin 14 is further included, the locating pin 14 adjusts lid 17 through pressure along edge-perpendicular and withstands Regulator body I.Locating pin 14 can adjust 17 /V of lid to pressure, and pressure is made, which to adjust lid 17, can only rotate 3/4 circle, counterclockwise It is zero to be screwed into bottom output pressure, and the output pressure of customer requirement can be reached by being screwed into bottom clockwise.

Further, emergency valve seat 21 is further included, the emergency valve seat 21 is mounted on I one side of regulator body, and passes through First intercommunicating pore 20 is connected with pressure maintaining valve accommodating cavity, and the position that emergency valve seat 21 connects with the first intercommunicating pore 20 is equipped with burst disk 19.When the gas pressure in gas cylinder is excessively high, the gap between suction nozzle trim ring 3 and suction nozzle 2 can be strutted, gas is directly from seam Gap enters pressure maintaining valve accommodating cavity, and applies pressure to burst disk 19 into the first intercommunicating pore 20, burst disk 19 rupture after directly from The two side holes pressure release of emergency valve seat 21.

Further, low pressure gauge outfit 24 is further included, the low pressure gauge outfit 24 is mounted on adjuster master by plus screw 25 On body I, and voltage regulation part accommodating cavity is connected to by the second intercommunicating pore 24a.After gas enters voltage regulation part accommodating cavity, then pass through Second intercommunicating pore 24a enters low pressure gauge outfit 24, and low pressure gauge outfit 24 measures the output pressure of gases at high pressure.

Further, in order to ensure that sealing is tight, the lower spring cup 11 is arranged with sealing ring 10 around its circumferential direction, described 10 outer ring of sealing ring houses cavity wall close contact with voltage regulation part.

Further, the valve seat 7 offers a ring annular groove 7b around its circumferential direction, and annular groove 7b surfaces are equipped with one Venthole 7c, the venthole 7c inwardly pass to the central through hole 7a of valve seat 7.It, can be through ventilation after gas enters central through hole 7a 7c fillings in hole enter in the space between annular groove 7b and pressure maintaining valve accommodating cavity, can help valve seat 7 during the work time certainly Dynamic centering, is more advantageous to the sealing of valve rod 8.

Preferably, the regulator body I is straight tube shape.

Further, in order to enhance leakproofness, the first O-ring 4, first O-ring are arranged in 2 circumferential direction of suction nozzle 4 outer rings are in close contact with 3 inner surface of suction nozzle trim ring；The suction nozzle trim ring 3 and pressure maintaining valve house the circumferential direction that cavity wall contacts On be arranged with the second O-ring 6.

Preferably, the axial line of the valve rod 8 is overlapped with the axial line of valve seat 7.

Further, 3 outer end face of suction nozzle trim ring is arranged with inlet seal pad 23.

In use, the air inlet nut 1 of micro-actuator is accessed gas cylinder gas outlet, suction nozzle 2 is the top of gas cylinder gas outlet Needle open starts to supply.Gas is after suction nozzle 2, filtering plug 22, into central through hole 7a, and upward to valve rod 8 one Thrust adjusts pressure and adjusts lid 17, and pressure adjusts lid 17 and transmits force to lower spring downwards by upper spring seat 13, pressure spring 12 The upper surface of seat 11, moving down it opens valve rod 8, and gas can enter between valve block 9 and valve rod 8 through central through hole 7a In the gap of opening, and enter voltage regulation part accommodating cavity, then exported through gas outlet 26.In this process, it is applied to lower spring The seat power of 11 upper surfaces and the power of lower surface can reach a balance, so as to give an output pressure value；When the pressure in gas cylinder When power reduces, gas enters central through hole 7a and the upward thrust to valve rod 8 becomes smaller, and is equivalent to pressure adjusting lid 17 and passes through The thrust that upper spring seat 13, pressure spring 12 transmit force to downwards 11 upper surface of lower spring cup becomes larger, can promote at this time valve rod 8 to The position movement of gas cylinder gas outlet in the process, due to the presence of pressure-stabilizing spring 5, is applied to the power of lower spring cup upper surface Gently an equalization point can be reached with the power for being applied to lower spring cup lower surface, so as to keep stable output pressure；Work as gas Due to the presence of pressure-stabilizing spring 5 when pressure in bottle increases, it is applied to the power of 11 upper surface of lower spring cup and is applied to lower spring The power of 11 lower surfaces of seat also can gently reach an equalization point.

Claims

1. a kind of micro pressure adjuster, which is characterized in that including regulator body (I), the regulator body (I) includes The voltage regulation part accommodating cavity and pressure maintaining valve accommodating cavity set gradually from top to bottom, the voltage regulation part accommodating cavity and pressure maintaining valve house Partition plate (I -1) is equipped between chamber；Voltage regulation part is equipped in the voltage regulation part accommodating cavity, voltage regulation part includes upper spring seat (13), lower spring cup (11) and the pressure spring (12) being folded between upper spring seat (13), lower spring cup (11)；The voltage stabilizing Voltage stabilizing valve member is equipped in valve accommodating cavity, voltage stabilizing valve member includes valve seat (7), valve rod (8) and suction nozzle (2), the valve rod (8) Rear end is placed in the central through hole (7a) of valve seat (7), and the front end that valve rod (8) stretches out the fixed end face of valve seat (7) passes through partition plate (I -1) And lower spring cup (11) is withstood, the suction nozzle (2) is fixed on the inlet end of valve seat (7), and air inlet by suction nozzle trim ring (3) Filtering plug (22) is equipped in mouth (2), the filtering plug (22) withstands valve rod (8) by the pressure-stabilizing spring (5) being placed in valve seat (7) Rear end, the position that valve rod (8) stretches out the fixed end face of valve seat (7) are arranged valve block (9)；Regulator body (I) the lower end insertion one Air inlet nut (1), upper end are arranged with pressure and adjust lid (17), and the pressure adjusts lid (17) and is spun on regulator body by screw thread (I) on, and pressure adjusts lid (17) and withstands upper spring seat (13) upper surface from top.

2. micro pressure adjuster according to claim 1, which is characterized in that the pressure adjusts lid (17) top center Equipped with adjusting screw (16), the adjusting screw (16) passes perpendicularly through pressure and adjusts lid (17) and on end and upper spring seat (13) Surface contacts.

3. micro pressure adjuster according to claim 1, which is characterized in that further include locating pin (14), the positioning Nail (14) adjusts lid (17) through pressure along edge-perpendicular and withstands regulator body (I).

4. micro pressure adjuster according to claim 1, which is characterized in that further include emergency valve seat (21), the peace Full valve seat (21) is mounted on regulator body (I) one side, and is connected by the first intercommunicating pore (20) with pressure maintaining valve accommodating cavity, safety The position that valve seat (21) connects with the first intercommunicating pore (20) is equipped with burst disk (19).

5. micro pressure adjuster according to claim 1, which is characterized in that low pressure gauge outfit (24) is further included, it is described low Gauge outfit (24) is pressed to be mounted on regulator body (I), and voltage regulation part accommodating cavity is connected to by the second intercommunicating pore (24a).

6. micro pressure adjuster according to claim 1, which is characterized in that the lower spring cup (11) is around its circumferential direction Sealing ring (10) is arranged with, sealing ring (10) outer ring houses cavity wall close contact with voltage regulation part.

7. micro pressure adjuster according to claim 1, which is characterized in that the valve seat (7) opens up around its circumferential direction There is a ring annular groove (7b), annular groove (7b) surface is equipped with a venthole (7c), and the venthole (7c) inwardly passes to valve The central through hole (7a) of seat (7).

8. micro pressure adjuster according to claim 1, which is characterized in that is arranged in suction nozzle (2) circumferential direction One O-ring (4), the first O-ring (4) outer ring are in close contact with suction nozzle trim ring (3) inner surface；The suction nozzle trim ring (3) housed with pressure maintaining valve and the second O-ring (6) is arranged in the circumferential direction that cavity wall contacts.