CN107859749B - Double-piston electromagnetic pulse valve - Google Patents
Double-piston electromagnetic pulse valve Download PDFInfo
- Publication number
- CN107859749B CN107859749B CN201711278187.1A CN201711278187A CN107859749B CN 107859749 B CN107859749 B CN 107859749B CN 201711278187 A CN201711278187 A CN 201711278187A CN 107859749 B CN107859749 B CN 107859749B
- Authority
- CN
- China
- Prior art keywords
- piston
- valve body
- cavity
- valve
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000005507 spraying Methods 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000001174 ascending effect Effects 0.000 abstract 2
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000630 rising effect Effects 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
Abstract
The invention discloses a double-piston electromagnetic pulse valve which is used in the field of ash removal system equipment and comprises a valve body, wherein an upper cavity and a lower cavity are arranged in the valve body, the upper cavity is positioned above the lower cavity, the upper cavity is communicated with the lower cavity through a through hole, a first piston capable of ascending and descending is arranged in the upper cavity, a blocking surface for blocking the through hole is formed at the bottom of the first piston, a pressure relief opening is arranged at the top of the upper cavity, a driving structure for driving the first piston to move upwards is arranged on the valve body, a second piston capable of ascending and descending is arranged in the lower cavity, a bypass opening which can lead to an air bag is arranged at a position, corresponding to the second piston, on the valve body, a blowing outlet is arranged at the bottom of the valve body, and the bypass opening is communicated with the blowing outlet after the second piston ascends. According to the invention, the two pistons are arranged, after the first piston moves, the second piston responds to the movement, so that compressed gas of the gas bag is sprayed out from the spraying outlet to finish the spraying process, the two pistons are structured to enable the valve to have a buffering effect in the opening process, the impact is small, and the service life of a product is prolonged.
Description
Technical Field
The invention relates to the field of ash removal system equipment and facilities, in particular to a double-piston electromagnetic pulse valve.
Background
In a pulse dust removal ash removal system, an electromagnetic pulse valve is generally used as a control device to realize pulse type injection. The existing electromagnetic pulse valves are all single-piston type, and the control cannot realize buffering, so that the service life of the existing electromagnetic pulse valve is short and the noise is large.
Disclosure of Invention
In order to solve the problems, the invention provides a double-piston electromagnetic pulse valve, which can prolong the service life of products.
The technical scheme adopted by the invention is as follows:
the utility model provides a double-piston electromagnetic pulse valve, includes the valve body, and the inside cavity that is equipped with of valve body is located the upper chamber of top and is located the lower cavity of below, and upper chamber passes through the through-hole intercommunication with lower cavity, is equipped with the first piston of liftable in the upper chamber, the bottom of first piston forms the shutoff face of shutoff through-hole, and the top of upper chamber is equipped with the pressure release mouth, is equipped with the drive structure that drives first piston and moves up on the valve body, is equipped with the second piston of liftable in the cavity down, and the position that corresponds the second piston on the valve body is equipped with the bypass mouth that can lead to the air pocket, and the valve body bottom is equipped with the jetting export, and the bypass mouth is linked together with the jetting export after the second piston rises.
As a further development of the invention, the outer diameter of the first piston is smaller than the outer diameter of the second piston.
As a further improvement of the invention, the outer diameter of the second piston is 3-5 times of the outer diameter of the second piston.
As a further improvement of the invention, the valve body comprises an upper valve body and a lower valve body connected with the lower end of the upper valve body, the upper chamber is arranged in the upper valve body, and the lower chamber, the bypass port and the injection outlet are all arranged in the lower valve body.
As a further improvement of the invention, the first piston comprises an upper part and a lower part, the diameter of the lower part is smaller than that of the upper part, the outer wall of the upper part is hermetically connected with the wall of the upper chamber so as to divide the upper chamber into a first cavity above and a second cavity below, the blocking surface is arranged at the lower part, and the driving structure comprises a vent hole arranged on the wall of the valve body, and the vent hole is communicated with the outside of the upper valve body and the second cavity.
As a further improvement of the invention, a bypass hole with the aperture smaller than that of the vent hole is also arranged in the upper valve body, and two ends of the bypass hole are led to the first cavity and the vent hole.
As a further improvement of the invention, the second piston is in an I shape and comprises a piston part positioned at the top, a connecting part connected to the bottom end of the piston part and a blocking part connected to the bottom end of the connecting part, the outer wall of the piston part is in sealing connection with the inner wall of the lower chamber, the blocking part is provided with a blocking surface for blocking the injection outlet, and the bypass port is positioned between the piston part and the blocking part when the blocking part blocks the injection outlet.
As a further improvement of the invention, the top end of the second piston is provided with a limiting core, and the limiting core protrudes out of the top end surface of the second piston.
As a further improvement of the invention, the top end of the first piston is provided with a limiting rod, and the limiting rod protrudes out of the top end surface of the first piston.
The beneficial effects of the invention are as follows: according to the invention, the two pistons are arranged, after the first piston moves, the second piston responds to the movement, so that compressed gas of the gas bag is sprayed out from the spraying outlet to finish the spraying process, the two pistons are structured to enable the valve to have a buffering effect in the opening process, the impact is small, and the service life of a product is prolonged.
Drawings
The invention will be further described with reference to the drawings and embodiments.
FIG. 1 is an exploded schematic view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a cross-sectional view A-A of fig. 2.
Detailed Description
The double-piston electromagnetic pulse valve as shown in fig. 1 to 3 comprises a valve body, wherein an upper chamber positioned above and a lower chamber 1 positioned below are arranged inside the valve body, a separation structure is arranged between the upper chamber and the lower chamber 1, and a through hole 2 is formed in the separation structure, so that the upper chamber and the lower chamber 1 can be communicated through the through hole 2.
The upper chamber is internally provided with a first piston 3 which can be lifted, the bottom of the first piston 3 forms a blocking surface 31 for blocking the through hole 2, and when the valve is in a closed state, the blocking surface 31 blocks the through hole 2, so that the upper chamber and the lower chamber 1 are separated and are not ventilated. The top of the upper chamber is provided with a pressure relief opening 4, and the pressure relief opening 4 is positioned above the first piston 3 and is communicated with the upper space of the first piston 3. The valve body is also provided with a driving structure for driving the first piston 3 to move upwards.
The lower chamber 1 is internally provided with a second piston 5 which can be lifted, a bypass opening 6 which can lead to the air bag is arranged on the valve body at a position corresponding to the second piston 5, and an air spraying and blowing opening 7 is arranged at the bottom of the valve body. In the closed state of the valve, the second piston 5 is at the bottommost position, and after the second piston 5 is lifted, the bypass port 6 communicates with the blowout port 7, so that the compressed gas in the air bag enters the blowout port 7 and is ejected.
The working principle of the above embodiment is then as follows:
after the electromagnetic valve is in power failure, the pressure relief opening 4 is opened, the pressure above the first piston 3 is reduced, at the moment, the driving structure drives the first piston 3 to rapidly rise, and the blocking surface 31 is separated from the through hole 2; after the upper chamber is communicated with the lower chamber 1, the space above the second piston 5 is enlarged, the pressure acting on the upper end of the second piston 5 is reduced, and at the moment, the air pressure in the air bag is relatively increased, so that the second piston 5 is driven to rise; the bypass port 6 is communicated with the blowout port 7 after the second piston 5 ascends, so that the compressed gas in the air bag enters the blowout port 7 and is quickly ejected, and the primary blowing process is completed.
Due to the structure that the two pistons are sequentially opened, the valve has a buffering effect in the opening process, the impact is small, the service life of the product is prolonged, and the valve is more suitable for the use requirement of a high-temperature environment.
It is further preferred that the outer diameter of the first piston 3 is smaller than the outer diameter of the second piston 5, i.e. the effective sealing area of the first piston 3 is smaller than the effective sealing area of the second piston 5, and the horizontal cross-sectional area of the upper chamber is smaller than the horizontal cross-sectional area of the lower chamber 1. The structure with one large and one small can greatly improve the response time of the second piston 5 when the first piston 3 ascends, and has better and stronger pulse effect under the condition of compressed gas with the same air quantity.
It is further preferable that the outer diameter of the second piston 5 is 3 to 5 times the outer diameter of the second piston 5.
The valve body in the embodiment comprises an upper valve body 8 and a lower valve body 9 connected to the lower end of the upper valve body 8. The upper valve body 8 at least comprises a valve cover 83 and a valve seat 84 covered by the valve cover 83, the upper chamber is arranged in the valve seat 84, the through hole 2 is arranged at the bottom end of the valve seat 84, and the pressure relief opening 4 is arranged in the middle of the valve seat 84. The lower chamber 1, the bypass port 6 and the injection outlet 7 are all arranged on the lower valve body 9. The valve cover 83 is connected with the valve seat 84 in a sealing manner, and the valve seat 84 is also connected with the lower valve body 9 in a sealing manner.
Further preferably, the first piston 3 comprises an upper portion 32 and a lower portion 33. The lower portion 33 has a smaller diameter than the upper portion 32 so that the first piston 3 is substantially T-shaped. The outer wall of the upper part 32 is sealingly connected to the wall of the upper chamber so as to divide the upper chamber into a first chamber 34 above the first piston 3 and a second chamber 35 below at the same level as the lower part 33. The lower part 33 of the first piston 3 is provided with the above mentioned blocking surface 31. The driving structure comprises a vent hole 81 formed in the wall of the valve body, and the vent hole 81 is communicated with the outside of the upper valve body 8 and the second cavity 35.
The vent hole 81 is communicated with external pressure gas, when the pressure relief opening 4 is opened, the external pressure is transmitted to the bottom end surface of the upper part 32 of the first piston 3 through the vent hole 81, the first piston 3 is pushed to rise through the upper part 32 of the first piston 3, and the pressure of the gas acting on the lower part 33 of the first piston 3 is transverse, so that the lifting of the first piston 3 is not influenced.
It is further preferred that a bypass hole 82 having a smaller diameter than the vent hole 81 is bored in the upper valve body 8, and both ends of the bypass hole 82 open to the first chamber 34 and the vent hole 81. Before the pressure is released, the first chamber 34 and the second chamber 35 have the same pressure, after the pressure is released, the pressure of the first chamber 34 drops very fast, while the pressure of the second chamber 35 drops slowly, and the pressure difference between the first chamber 34 and the second chamber 35 pushes the first piston 3 to rise.
Further preferably, the second piston 5 is in an "i" shape, and includes a piston portion 51 at the top, a connecting portion 52 connected to the bottom end of the piston portion 51, and a blocking portion 53 connected to the bottom end of the connecting portion 52. The piston portion 51 has the largest outer diameter, and forms a main piston structure, and the outer wall of the piston portion 51 is hermetically connected to the inner wall of the lower chamber 1. The blocking portion 53 is provided with a blocking surface for blocking the injection outlet 7, and the blocking surface is an annular surface, and when the blocking portion 53 blocks the injection outlet 7, the bypass port 6 is located between the piston portion 51 and the blocking portion 53.
When the first piston 3 is lifted, the pressure above the second piston 5 is reduced, a pressure difference is formed between the upper and lower sides of the piston portion 51, and the internal pressure of the air pocket is transmitted to the bottom end surface of the piston portion 51, thereby lifting the second piston 5.
Further preferably, the top end of the second piston 5 is provided with a limiting core 54, and the limiting core 54 protrudes out of the top end surface of the second piston 5. The stopper core 54 is a copper core, which is heat-resistant and serves to prevent damage caused by excessive lifting of the second piston 5.
Further preferably, the top end of the first piston 3 is provided with a limiting rod 36, and the limiting rod 36 protrudes out of the top end surface of the first piston 3 to prevent damage caused by excessive rising of the first piston 3.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Claims (2)
1. The utility model provides a double-piston electromagnetic pulse valve which characterized in that: the valve comprises a valve body, wherein an upper cavity and a lower cavity (1) are arranged in the valve body, the upper cavity is communicated with the lower cavity (1) through a through hole (2), a first liftable piston (3) is arranged in the upper cavity, a blocking surface (31) for blocking the through hole (2) is formed at the bottom of the first piston (3), a pressure relief opening (4) is formed at the top of the upper cavity, a driving structure for driving the first piston (3) to move upwards is arranged on the valve body, a second liftable piston (5) is arranged in the lower cavity (1), a bypass opening (6) which can lead to a gas bag is formed in the valve body at a position corresponding to the second piston (5), a blowout outlet (7) is formed at the bottom of the valve body, and the bypass opening (6) is communicated with the blowout outlet (7) after the second piston (5) ascends;
the valve body comprises an upper valve body (8) and a lower valve body (9) connected to the lower end of the upper valve body (8), an upper chamber is arranged in the upper valve body (8), and a lower chamber (1), a bypass port (6) and a blowout port (7) are all arranged in the lower valve body (9);
the first piston (3) comprises an upper part (32) and a lower part (33), the diameter of the lower part (33) is smaller than that of the upper part (32), the outer wall of the upper part (32) is connected with the wall of the upper chamber in a sealing way so as to divide the upper chamber into a first cavity (34) above and a second cavity (35) below, the lower part (33) is provided with the blocking surface (31), the driving structure comprises a vent hole (81) arranged on the wall of the valve body, and the vent hole (81) is communicated with the outside of the upper valve body (8) and the second cavity (35);
and a bypass hole (82) with the aperture smaller than that of the vent hole (81) is further arranged in the upper valve body (8), and two ends of the bypass hole (82) are led to the first cavity (34) and the vent hole (81).
2. The dual piston electromagnetic pulse valve of claim 1, wherein: the outer diameter of the first piston (3) is smaller than the outer diameter of the second piston (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278187.1A CN107859749B (en) | 2017-12-06 | 2017-12-06 | Double-piston electromagnetic pulse valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278187.1A CN107859749B (en) | 2017-12-06 | 2017-12-06 | Double-piston electromagnetic pulse valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859749A CN107859749A (en) | 2018-03-30 |
| CN107859749B true CN107859749B (en) | 2023-12-26 |
Family
ID=61705271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711278187.1A Active CN107859749B (en) | 2017-12-06 | 2017-12-06 | Double-piston electromagnetic pulse valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859749B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU507739A1 (en) * | 1974-07-31 | 1976-03-25 | Всесоюзный научно-исследовательский институт противопожарной обороны МВД СССР | Hydraulic valve |
| CN86105073A (en) * | 1985-09-17 | 1987-03-18 | Tlv有限公司 | The separation of condensate and discharger |
| CN87215755U (en) * | 1987-11-24 | 1988-11-02 | 大连工学院 | Multifunction-closed type pre-operation safe valve |
| CN102147028A (en) * | 2011-04-15 | 2011-08-10 | 王元清 | Low-pressure pilot operated safety valve |
| CN103821950A (en) * | 2014-02-28 | 2014-05-28 | 成都易态科技有限公司 | Pulse valve |
| CN104019257A (en) * | 2014-06-05 | 2014-09-03 | 中国科学院等离子体物理研究所 | Novel vacuum decompression valve |
| CN204312838U (en) * | 2014-11-18 | 2015-05-06 | 上海大学 | A kind of multi-function electromagnetic valve |
| CN207673870U (en) * | 2017-12-06 | 2018-07-31 | 广州碧空环保产品有限公司 | A kind of double-piston electromagnetic impulse valve |
-
2017
- 2017-12-06 CN CN201711278187.1A patent/CN107859749B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU507739A1 (en) * | 1974-07-31 | 1976-03-25 | Всесоюзный научно-исследовательский институт противопожарной обороны МВД СССР | Hydraulic valve |
| CN86105073A (en) * | 1985-09-17 | 1987-03-18 | Tlv有限公司 | The separation of condensate and discharger |
| CN87215755U (en) * | 1987-11-24 | 1988-11-02 | 大连工学院 | Multifunction-closed type pre-operation safe valve |
| CN102147028A (en) * | 2011-04-15 | 2011-08-10 | 王元清 | Low-pressure pilot operated safety valve |
| CN103821950A (en) * | 2014-02-28 | 2014-05-28 | 成都易态科技有限公司 | Pulse valve |
| CN104019257A (en) * | 2014-06-05 | 2014-09-03 | 中国科学院等离子体物理研究所 | Novel vacuum decompression valve |
| CN204312838U (en) * | 2014-11-18 | 2015-05-06 | 上海大学 | A kind of multi-function electromagnetic valve |
| CN207673870U (en) * | 2017-12-06 | 2018-07-31 | 广州碧空环保产品有限公司 | A kind of double-piston electromagnetic impulse valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107859749A (en) | 2018-03-30 |
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