CN116899333B - Precise pressure reducing valve - Google Patents
Precise pressure reducing valve Download PDFInfo
- Publication number
- CN116899333B CN116899333B CN202310139194.2A CN202310139194A CN116899333B CN 116899333 B CN116899333 B CN 116899333B CN 202310139194 A CN202310139194 A CN 202310139194A CN 116899333 B CN116899333 B CN 116899333B
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- Prior art keywords
- inlet channel
- channel
- pressure reducing
- filter element
- valve body
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- 239000000428 dust Substances 0.000 claims abstract description 63
- 238000010009 beating Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000010030 laminating Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 11
- 239000012535 impurity Substances 0.000 description 13
- 239000012530 fluid Substances 0.000 description 9
- 230000000087 stabilizing effect Effects 0.000 description 9
- 238000001914 filtration Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
- B01D46/121—V-type arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The application relates to a precision pressure reducing valve relates to the technical field of valves, and it includes the lower valve body, valve body one side is provided with inlet channel, opposite side and is provided with the passageway of giving vent to anger down, inlet channel upper end intercommunication has the guide's passageway, the intercommunication has logical chamber between inlet channel and the passageway of giving vent to anger, the lower valve body lower extreme is connected with the base, the base upside is provided with the case that is used for the shutoff to lead to the chamber, be provided with the spring between case and the base, case upper end butt has the valve rod, inlet channel department is provided with the filter, one side that the case is close to the filter is connected with the beating device that is used for beating the filter, inlet channel lower extreme inner wall intercommunication has the dust storage chamber, the dust storage chamber is located one side that the filter deviates from the beating device. The application utilizes the working principle of the precise pressure reducing valve to realize self-cleaning of the filter element, and the filter element is not required to be disassembled for cleaning, so that time and labor are saved.
Description
Technical Field
The application relates to the field of valves, in particular to a precise pressure reducing valve.
Background
The precise pressure reducing valve is mainly used for reducing and stabilizing the pressure of the air source to a fixed value so that the regulating valve can obtain stable air source power. The decompression principle is as follows: the opening of the opening and closing piece in the valve body is controlled to regulate the flow of the medium, the pressure of the medium is reduced, and meanwhile, the opening of the opening and closing piece is regulated by the action of the pressure behind the valve, so that the outlet pressure is kept within a set range under the condition that the inlet pressure is continuously changed.
The Chinese patent with the publication number of CN204985903U discloses a precise pressure reducing valve, which comprises a valve body, a pressure stabilizing seat, a valve cover, an adjusting hand wheel, a pressure regulating spring, a pressure stabilizing diaphragm assembly, an overflow diaphragm assembly, a valve core and a locking cover, wherein the pressure stabilizing diaphragm assembly comprises a pressure stabilizing top, a first pressure stabilizing disc, a first diaphragm, a middle sleeve and a second diaphragm, and a first reset spring is arranged between the pressure stabilizing top and the pressure stabilizing seat; the upper end of the pressure stabilizing seat is respectively extended with a boss and a cylinder body surrounding the periphery of the boss, the boss is provided with an air guide hole communicated with the second cavity, the top end of the boss is provided with a steel ball, and the top end of the cylinder body is provided with a clamping reed matched with the steel ball stop; the overflow diaphragm assembly comprises a tray seat, a third diaphragm and a fourth diaphragm, wherein a tray and a tray cover which is correspondingly matched with the tray are arranged between the third diaphragm and the fourth diaphragm.
When the pressure reducing valve is used for air intake, a filter screen is often arranged in an air intake channel for filtering dust impurities in the air, but the following technical defects still exist: after long-term use, dust is accumulated at the filter screen to influence air circulation, and if the filter screen needs to be disassembled and cleaned, the pressure reducing valve needs to be disassembled from the pipeline system, so that the operation is troublesome.
Disclosure of Invention
In order to realize the filter screen self-cleaning, this application provides a precision relief pressure valve.
The application provides a precision pressure reducing valve adopts following technical scheme:
the utility model provides a precision pressure reducing valve, includes the valve body down, valve body one side is provided with inlet channel, opposite side is provided with the passageway of giving vent to anger down, inlet channel upper end intercommunication has the guide's passageway, the intercommunication has logical chamber between inlet channel and the passageway of giving vent to anger, the lower valve body lower extreme is connected with the base, the base upside is provided with the case that is used for shutoff logical chamber, be provided with the spring between case and the base, case upper end butt has the valve rod, inlet channel department is provided with the filter, one side that the case is close to the filter is connected with the device of beating that is used for beating the filter, inlet channel lower extreme inner wall intercommunication has the dust storage chamber, the dust storage chamber is located one side that the filter deviates from the device of beating.
Through adopting above-mentioned technical scheme, fluid medium gets into from inlet channel to act on the diaphragm subassembly along the guide's passageway, make the valve rod pushed down, jack-up case, and then make the logical chamber open, fluid medium just can follow outlet channel and flow out.
When the pressure reducing valve works, the valve core floats due to continuous change of inlet pressure, so that the knocking device impacts the filtering piece, dust impurities attached to the filtering piece are knocked down, and the dust impurities fall down and enter the dust storage cavity without affecting normal passing of follow-up fluid media. The application utilizes the working principle of the precise pressure reducing valve to realize self-cleaning of the filter element, and the filter element is not required to be disassembled for cleaning, so that time and labor are saved.
Optionally, the filter element comprises an inclined net, and the interval between the inclined net and the valve rod is gradually reduced from top to bottom;
the beating device comprises a beating ball and an elastic strip connected between the beating ball and the valve core, and the beating ball is positioned at one side of the middle part of the inclined net, which is close to the valve core.
By adopting the technical scheme, firstly, dust adhered to the surface of the inclined net is easy to fall down after knocking; secondly, the elastic strip increases the shaking sense of the striking ball, so that the striking force of the striking ball on the filter element is stronger when the valve core floats, and dust is convenient to separate from the filter element.
Optionally, the inclined screen outside is connected with the side net, the side net laminating is in the air inlet channel inner wall and cover in guide's passageway department of admitting air.
By adopting the technical scheme, the air entering the pilot channel is filtered, so that dust impurities are prevented from accumulating at the diaphragm to influence the normal operation of the pressure reducing valve.
Optionally, be connected with the dust guide sloping block between sloping net lower extreme and the side net, the one side that stores up dirt chamber upper end and deviate from the dust guide sloping block is provided with the vortex piece.
Through adopting above-mentioned technical scheme, the vortex piece blocks fluid medium, and the dust impurity of guarantee whereabouts can fall into dust storage intracavity smoothly through leading dirt sloping block.
Optionally, the elastic strip is the arc setting and upwards arches, be connected with the rib between elastic strip middle part and the beating ball.
Through adopting above-mentioned technical scheme, beat the ball and shake the time vibration by a small margin for the elastic strip is difficult to excessively deform, guarantees to beat the device and can normally work for a long time.
Optionally, one side of inclined wire towards the case is connected with the bracing piece, the one end that the bracing piece kept away from the inclined wire is fixedly connected with the supporting seat of butt in lower valve body inner wall.
Through adopting above-mentioned technical scheme, guarantee that the filter element is stable in position relative to beating device, the filter element of being convenient for carries out self-cleaning.
Optionally, the guide passageway includes export, toper passageway and the entry that from top to bottom set gradually, toper passageway department is provided with the steel ball, the diameter of steel ball is greater than the entry internal diameter and is less than the export internal diameter, the intercommunication has the return air passageway between entry upper end one side and the air inlet passageway, the intercommunication department of return air passageway and air inlet passageway is located the one side that the filter element is close to the case.
By adopting the technical scheme, when the pressure reducing valve just enters, part of air is blocked by the steel balls and is sprayed on the surface of the filter element through the air return channel, so that dust on the surface of the filter element is blown down, and the cleaning effect is achieved. When the air pressure is increased, the steel ball is jacked up, and the normal operation of the pressure reducing valve is not influenced.
Optionally, the air inlet channel inner wall is connected with the guide plate, the guide plate is located between return air channel and the filter, the guide plate interval is connected with a plurality of water conservancy diversion mouths just facing the filter.
By adopting the technical scheme, the air flow is conveniently guided to the filter element, and dust on the surface of the filter element is conveniently blown down.
Optionally, the lower valve body is connected with a push rod abutting against one side of the steel ball in a threaded manner.
By adopting the technical scheme, when the pressure of the air inlet of the pressure reducing valve is smaller, the ejector rod is utilized to jack the steel balls, so that the steel balls do not influence the normal operation of the pressure reducing valve.
Optionally, the dust storage chamber lower extreme link up to lower valve body outer wall, lower valve body threaded connection has the end cap of card income dust storage chamber.
By adopting the technical scheme, the plug is unscrewed, so that dust in the dust storage cavity can be cleaned, and the plug is unscrewed, so that air flow can not flow out of the dust storage cavity.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the filtering piece, dust impurities in the air are filtered, so that subsequent equipment cannot be polluted, and the air source dust filter is particularly suitable for scenes with higher dust content of an air source;
2. through the setting of beating device, steel ball and return air passageway, realize the automatically cleaning of filter, need not to dismantle the washing, labour saving and time saving has energy-conserving meaning.
Drawings
FIG. 1 is a schematic view of a configuration of a precision pressure reducing valve according to an embodiment of the present application;
FIG. 2 is a schematic view of the structure of a lower valve body according to an embodiment of the present application;
FIG. 3 is an enlarged schematic view of area A of FIG. 2;
fig. 4 is a schematic structural view of the steel ball according to the embodiment of the present application after being jacked up by the jack.
Reference numerals illustrate: 1. a lower valve body; 11. an air intake passage; 12. an air outlet channel; 13. a pilot passage; 131. an outlet; 132. a tapered channel; 133. an inlet; 14. a cavity is communicated; 15. a dust storage cavity; 16. an air return channel; 17. a deflector; 18. a flow guiding nozzle; 19. steel balls; 2. a base; 3. a valve core; 4. a spring; 5. a valve stem; 6. a filter; 61. an inclined wire; 62. a side net; 63. a dust guiding oblique block; 64. a support rod; 65. a support base; 7. a beating device; 71. striking a ball; 72. an elastic strip; 73. ribs; 8. a spoiler; 9. a push rod; 10. and (5) plugging.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a precise pressure reducing valve.
Referring to fig. 1, the precision pressure reducing valve comprises an upper cover, an upper valve body, a middle valve body, a lower valve body 1 and a base 2 which are sequentially arranged from top to bottom, wherein one side of the lower valve body 1 is provided with an air inlet channel 11, the other opposite side is provided with an air outlet channel 12, and the inner wall of one end, opposite to the air inlet channel 11 and the air outlet channel 12, is provided with internal threads so as to be connected with a pipe fitting. A through cavity 14 is communicated between the air inlet channel 11 and the air outlet channel 12, and the axial lead of the through cavity 14 is vertically arranged so that air in the air inlet channel 11 flows into the air outlet channel 12 from bottom to top.
Referring to fig. 1 and 2, a base 2 is opposite to a through cavity 14 and is connected with a lower valve body 1 through bolts, a valve core 3 is vertically and slidably connected to the upper side of the base 2, and a spring 4 is abutted between the valve core 3 and the base 2. The outer edge of the upper end of the valve core 3 is provided with a stepped groove, a gasket is arranged at the stepped groove, and a convex edge is arranged at the opening of the through cavity 14 of the lower valve body 1. The spring 4 applies thrust to the valve core 3, so that the gasket is abutted to the convex edge, and the upper end of the valve core 3 is closed to the through cavity 14 to isolate the air inlet channel 11 and the air outlet channel 12.
Referring to fig. 1 and 2, the upper end of the valve core 3 is abutted against the valve rod 5, the upper end of the valve rod 5 is connected with a diaphragm assembly, the upper end of the air inlet channel 11 is communicated with a pilot channel 13, and the pilot channel 13 supplies air of the air inlet channel 11 to flow into the diaphragm assembly. Therefore, after the fluid medium enters from the air inlet channel 11, the fluid medium acts on the diaphragm assembly along the pilot channel 13, so that the valve rod 5 is pressed down to push the valve core 3 open, and the through cavity 14 is opened, so that the fluid medium can flow out from the air outlet channel 12.
It should be noted that, the working principle of the precise pressure reducing valve disclosed in the embodiment of the present application and the structure involved in implementing the pressure reducing principle are all in the prior art, and the other undescribed structures are not described herein. The above description of the structure of the relief valve is for the purpose of explaining the movement of the spool 3 for the convenience of understanding the structure described below.
Referring to fig. 2 and 3, a filter 6 for filtering air is provided at the intake passage 11, and the filter 6 is made of stainless steel. The filter element 6 comprises an inclined net 61, a side net 62, a dust guiding inclined block 63, a supporting rod 64 and a supporting seat 65, wherein the inclined net 61 is positioned on one side of the pilot channel 13 close to the valve core 3, and the outer edge of the inclined net 61 is attached to the inner wall of the air inlet channel 11, so that dust impurities are removed by filtering through the inclined net 61 before air flows into the air outlet channel 12. The distance between the inclined net 61 and the valve rod 5 is gradually reduced from top to bottom, so that impurities attached to the surface of the inclined net 61 are easy to fall under the action of gravity after knocking.
Referring to fig. 2 and 3, the side net 62 is fixedly connected to the outer edge of the inclined net 61 at a side away from the valve core 3, and the side net 62 is attached to the inner wall of the air inlet channel 11 and covers the air inlet of the pilot channel 13, so that air entering the pilot channel 13 can be filtered, and dust and impurities are prevented from accumulating at the diaphragm to affect the normal operation of the pressure reducing valve. In addition, the side net 62 can also increase the contact area between the filter element 6 and the inner wall of the air inlet channel 11, so as to ensure the stability of the filter element 6 placed in the air inlet channel 11.
Referring to fig. 2 and 3, a support rod 64 is fixedly connected to one side of the inclined net 61 facing the valve core 3, one end of the support rod 64 away from the inclined net 61 is fixedly connected with a support seat 65 abutting against the inner wall of the lower valve body 1, and the support seat 65 is in an arc shape, so that the filter element 6 always keeps a stable position under the air inlet pressure, and cannot be easily shifted, and further the filtering effect is ensured. A dust guide inclined block 63 is fixedly connected between the lower end of the inclined net 61 and the side net 62, and the height of the dust guide inclined block 63 gradually decreases along the direction deviating from the valve core 3.
Referring to fig. 2 and 3, a beating device 7 for beating the filter element 6 is connected to one side of the valve core 3 close to the filter element 6, the beating device 7 comprises a beating ball 71, an elastic strip 72 and ribs 73, one end of the elastic strip 72 is fixedly connected to one side of the valve core 3 close to the filter element 6, the other end of the elastic strip 72 is fixedly connected with the beating ball 71, and the elastic strip 72 is arranged in an arc shape and is arched upwards. The rib 73 is fixedly connected between the middle of the elastic strip 72 and the striking ball 71. The striking ball 71 is positioned at one side of the middle part of the inclined net 61 near the valve core 3, and a gap is reserved between the striking ball 71 and the inclined net 61 when no air is taken in.
When the pressure reducing valve works, the valve core 3 can float up and down due to the continuous change of the inlet pressure, so that the elastic strip 72 shakes, the striking ball 71 strikes the surface of the inclined net 61, and dust impurities attached to the filter element 6 are knocked down.
Referring to fig. 2 and 3, the inner wall of the lower end of the air inlet channel 11 is communicated with a dust storage cavity 15, the upper end opening of the dust storage cavity 15 is opposite to the pilot channel 13, and the lower end of the dust storage cavity is communicated with the outer wall of the lower end of the lower valve body 1, so that the dust storage cavity 15 is positioned on one side of the filter element 6, which is away from the beating device 7, and falling dust impurities can enter the dust storage cavity 15 without influencing the normal passing of subsequent fluid media. The lower valve body 1 is in threaded connection with a plug 10 clamped into the dust storage cavity 15, and dust in the dust storage cavity 15 can be cleaned by unscrewing the plug 10.
Referring to fig. 3, a spoiler 8 is disposed on a side of the upper end of the dust storage cavity 15 facing away from the dust guiding inclined block 63, the spoiler 8 is fixedly connected to the inner wall of the air inlet channel 11, the cross section of the spoiler 8 is triangular, and the upper end of the spoiler 8 is slightly higher than the upper end of the dust guiding inclined block 63. The turbulent flow block 8 blocks the fluid medium, so that falling dust impurities can be ensured to smoothly fall into the dust storage cavity 15 through the dust guide inclined block 63.
Referring to fig. 2 and 3, the pilot passage 13 includes an outlet 131, a tapered passage 132, and an inlet 133, which are sequentially provided from top to bottom, and the inner diameter of the inlet 133 is smaller than the inner diameter of the outlet 131. The conical passage 132 is provided with a steel ball 19, and the diameter of the steel ball 19 is larger than the inner diameter of the inlet 133 and smaller than the inner diameter of the outlet 131. An air return channel 16 is communicated between one side of the upper end of the inlet 133 and the air inlet channel 11, and the communication part of the air return channel 16 and the air inlet channel 11 is positioned on one side of the filter element 6 close to the valve core 3. The inner wall of the air inlet channel 11 is connected with a deflector 17 which is obliquely arranged, the deflector 17 is positioned between the air return channel 16 and the filter element 6, and a plurality of deflector nozzles 18 which are opposite to the filter element 6 are fixedly connected with the deflector 17 at intervals.
When the pressure reducing valve is just in air intake, part of air is blocked by the steel balls 19, and is sprayed on the surface of the filter element 6, which is close to one side of the valve core 3, through the air return channel 16, the guide plate 17 and the guide nozzle 18, so that dust on the surface of the filter element 6 is blown down to play a cleaning role.
Referring to fig. 3 and 4, the lower valve body 1 is screw-coupled with a push rod 9 abutting against one side of the steel ball 19, the push rod 9 is disposed in a horizontal direction, and an end portion can extend into the tapered passage 132. If the ejector rod 9 is not screwed into the conical channel 132, the steel balls 19 can reflux part of air to play a role in self-cleaning, if the ejector rod 9 is screwed into the conical channel 132, the steel balls 19 are jacked up, so that the steel balls 19 can not obstruct the air to pass through, the normal work of the pressure reducing valve is not influenced, and the self-cleaning device is suitable for the time when the pressure inlet pressure of the pressure reducing valve is smaller.
The implementation principle of the precise pressure reducing valve in the embodiment of the application is as follows:
when the filter element 6 needs to be cleaned, the ejector rod 9 is unscrewed firstly, so that the steel ball 19 seals the inlet 133, then when the pressure reducing valve works, air enters the air inlet channel 11, and firstly flows through the inlet 133, the air return channel 16, the guide plate 17 and the guide nozzle 18 to be sprayed on the surface of the filter element 6, which is close to one side of the valve core 3, so that dust on the surface of the filter element 6 is blown down; when the air pressure is increased or after the ejector rod 9 is screwed in, the steel ball 19 is ejected, air acts on the diaphragm assembly, the valve rod 5 and the valve core 3 are pressed down, and the striking ball 71 is driven to strike the inclined net 61, so that residual dust impurities are knocked off.
The falling dust enters the dust storage cavity and is accumulated on the inner wall of the lower end, and the dust in the dust storage cavity can be cleaned after the plug is unscrewed.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. The utility model provides a precision pressure reducing valve, includes valve body (1), valve body (1) one side is provided with inlet channel (11), opposite side are provided with outlet channel (12) down, inlet channel (11) upper end intercommunication has guide's passageway (13), the intercommunication has logical chamber (14) between inlet channel (11) and outlet channel (12), valve body (1) lower extreme is connected with base (2) down, base (2) upside is provided with case (3) that are used for shutoff logical chamber (14), be provided with spring (4) between case (3) and base (2), case (3) upper end butt has valve rod (5), inlet channel (11) department is provided with filter (6), its characterized in that: one side of the valve core (3) close to the filter element (6) is connected with a beating device (7) for beating the filter element (6), the inner wall of the lower end of the air inlet channel (11) is communicated with a dust storage cavity (15), and the dust storage cavity (15) is positioned at one side of the filter element (6) away from the beating device (7);
the filter element (6) comprises an inclined net (61), and the distance between the inclined net (61) and the valve rod (5) is gradually reduced from top to bottom;
the beating device (7) comprises a beating ball (71) and an elastic strip (72) connected between the beating ball (71) and the valve core (3), wherein the beating ball (71) is positioned at one side, close to the valve core (3), of the middle part of the inclined net (61);
the pilot channel (13) comprises an outlet (131), a conical channel (132) and an inlet (133) which are sequentially arranged from top to bottom, a steel ball (19) is arranged at the conical channel (132), the diameter of the steel ball (19) is larger than the inner diameter of the inlet (133) and smaller than the inner diameter of the outlet (131), an air return channel (16) is communicated between one side of the upper end of the inlet (133) and the air inlet channel (11), and the communicated part of the air return channel (16) and the air inlet channel (11) is positioned at one side, close to the valve core (3), of the filter element (6);
the air inlet channel (11) inner wall is connected with guide plates (17), the guide plates (17) are positioned between the air return channel (16) and the filter element (6), and the guide plates (17) are connected with a plurality of guide nozzles (18) which are opposite to the filter element (6) at intervals.
2. The precision pressure reducing valve according to claim 1, wherein: the outside of inclined net (61) is connected with side net (62), side net (62) laminating is in inlet channel (11) inner wall and cover in guide's passageway (13) inlet.
3. A precision pressure reducing valve as defined in claim 2, wherein: the dust guide inclined block (63) is connected between the lower end of the inclined net (61) and the side net (62), and a spoiler (8) is arranged on one side, deviating from the dust guide inclined block (63), of the upper end of the dust storage cavity (15).
4. The precision pressure reducing valve according to claim 1, wherein: the elastic strip (72) is arranged in an arc shape and is arched upwards, and ribs (73) are connected between the middle part of the elastic strip (72) and the striking ball (71).
5. The precision pressure reducing valve according to claim 1, wherein: one side of the inclined net (61) facing the valve core (3) is connected with a supporting rod (64), and one end of the supporting rod (64) away from the inclined net (61) is fixedly connected with a supporting seat (65) which is abutted against the inner wall of the lower valve body (1).
6. The precision pressure reducing valve according to claim 1, wherein: the lower valve body (1) is in threaded connection with a push rod (9) which is abutted to one side of the steel ball (19).
7. The precision pressure reducing valve according to claim 1, wherein: the lower end of the dust storage cavity (15) penetrates through the outer wall of the lower valve body (1), and the lower valve body (1) is in threaded connection with a plug (10) clamped into the dust storage cavity (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310139194.2A CN116899333B (en) | 2023-02-10 | 2023-02-10 | Precise pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310139194.2A CN116899333B (en) | 2023-02-10 | 2023-02-10 | Precise pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116899333A CN116899333A (en) | 2023-10-20 |
| CN116899333B true CN116899333B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310139194.2A Active CN116899333B (en) | 2023-02-10 | 2023-02-10 | Precise pressure reducing valve |
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| CN (1) | CN116899333B (en) |
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| CN213145495U (en) * | 2020-07-16 | 2021-05-07 | 玉环信山精工机械有限公司 | Filtering pressure reducing valve |
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| CN216344165U (en) * | 2021-10-30 | 2022-04-19 | 永嘉县晨正阀门制造有限公司 | Pilot piston type air pressure reducing valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008065727A (en) * | 2006-09-11 | 2008-03-21 | Neriki:Kk | Pressure reducing valve |
| JP7325118B2 (en) * | 2020-12-14 | 2023-08-14 | 株式会社ミヤワキ | Pressure reducing valve with automatic cleaning function |
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2023
- 2023-02-10 CN CN202310139194.2A patent/CN116899333B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927741A (en) * | 2016-07-06 | 2016-09-07 | 成都航天烽火精密机电有限公司 | Pressure reducing valve for high-pressure gas |
| CN213145495U (en) * | 2020-07-16 | 2021-05-07 | 玉环信山精工机械有限公司 | Filtering pressure reducing valve |
| CN216144023U (en) * | 2021-03-12 | 2022-03-29 | 江西三舰客气体技术有限公司 | Ventilation device that desiccator was used |
| CN216344165U (en) * | 2021-10-30 | 2022-04-19 | 永嘉县晨正阀门制造有限公司 | Pilot piston type air pressure reducing valve |
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| Publication number | Publication date |
|---|---|
| CN116899333A (en) | 2023-10-20 |
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