CN115487612B - Electromagnetic pulse valve for high-speed differential control airflow channel - Google Patents
Electromagnetic pulse valve for high-speed differential control airflow channel Download PDFInfo
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- CN115487612B CN115487612B CN202211238265.6A CN202211238265A CN115487612B CN 115487612 B CN115487612 B CN 115487612B CN 202211238265 A CN202211238265 A CN 202211238265A CN 115487612 B CN115487612 B CN 115487612B
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- hole
- valve body
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- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Classifications
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- 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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses an electromagnetic pulse valve for a high-speed differential control airflow channel, which comprises a valve body, wherein a main diaphragm is arranged at the bottom of the valve body, an output port is arranged right below the main diaphragm, a first rear air chamber and a first front air chamber are respectively arranged at the upper side and the lower side of the main diaphragm, a first throttling hole is arranged on the main diaphragm or the valve body, the first rear air chamber is communicated with a second front air chamber, a first exhaust hole is arranged at one side of the second front air chamber, a secondary diaphragm is arranged above the first exhaust hole, a second rear air chamber is arranged above the secondary diaphragm, a second throttling hole is arranged on the secondary diaphragm or the valve body, a second exhaust hole is arranged at one side of the second rear air chamber, the first throttling hole is communicated with the second front air chamber through an air inlet channel, and the second front air chamber is communicated with the first rear air chamber through a central channel. When the first exhaust hole is exhausted, the gas from the first throttling hole is directly exhausted from the first exhaust hole, so that the first rear air chamber is rapidly depressurized, and the pulse valve is rapidly opened. Its peak pressure and output pressure rise rate etc. are significantly improved.
Description
Technical Field
The invention relates to an electromagnetic pulse valve for a high-speed differential control airflow channel, and belongs to the field of electromagnetic pulse valves for pulse blowing bag type dust collectors.
Background
The electromagnetic pulse valve is a generating device of the ash-removing air source of the pulse blowing bag type dust collector. The filter bag dust removing device is controlled by an electric signal output by a pulse injection controller, and compressed gas is injected to remove dust from the filter bag.
The electromagnetic pulse valve is shown in fig. 1 and 2. The main diaphragm 11 divides the atmosphere chamber of the valve into a first front air chamber 1 and a first rear air chamber 2, and the auxiliary diaphragm 9 divides the small air chamber into a second front air chamber 3 and a second rear air chamber 4. When the compressed gas source is turned on, the compressed gas passes through the first orifice 12, the second orifice 7, and enters the first rear air chamber 2 and the second rear air chamber 4, respectively. At this time, the first exhaust hole 10 and the second exhaust hole 8 are blocked, so that the pressure of the first rear air chamber 2 makes the main diaphragm 11 cling to the output port 13 of the valve, and the electromagnetic pulse valve is in a closed state, as shown in fig. 1.
When the armature 6 of the electromagnetic pilot head is driven to move by the electric signal, the second vent hole 8 is opened, the auxiliary diaphragm 9 moves backwards, and the first vent hole 10 is opened. The first rear air chamber 2 is depressurized, the pressure of the first front air chamber 1 moves the main diaphragm 11 backwards, compressed air is blown through the output port 13, and the electromagnetic pulse valve is in an open state as shown in fig. 2.
When the electric signal disappears, the armature 6 of the electromagnetic pilot head is reset, the second vent hole 8 is reset, the auxiliary diaphragm 9 moves forwards, the first vent hole 10 is blocked, the pressure of the first rear air chamber 2 rises, the first rear air chamber is clung to the output port 13 of the valve, and the electromagnetic pulse valve is in a closed state.
The pressure difference between the front and rear air chambers determines the active position of the diaphragm, and the pulse valve is opened or closed. The pulse valve is therefore also referred to as a differential gas valve.
The motive force of pulse ash removal is compressed gas blown by a pulse valve, and obviously, the blowing performance of the pulse valve has direct influence on the effect of pulse ash removal. The peak pressure and the rate of rise of the output pressure generated when the pulse valve blows are the most important parameters. Therefore, how to increase the opening and closing speed of the pulse valve is a key technology for blowing ash removal.
When the electromagnetic pulse valve is opened and closed, the air chamber pressure is built through the inflation of the throttle hole, so that the valve is closed; when the exhaust hole is exhausted, the air chamber is depressurized, so that the valve is opened. The aperture of the throttle hole is enlarged, so that the pulse valve can be rapidly closed; the aperture of the exhaust hole is enlarged, so that the pulse valve is opened rapidly. However, when the vent hole is exhausted, the throttle hole is still inflated, and because the throttle hole is inflated, gas can flow to the vent hole after passing through the rear air chamber, as shown by the arrow in fig. 1, the throttle hole can continuously provide gas flow to the rear air chamber, offset the speed of exhausting and reducing the pressure of the vent hole, and cause the pulse valve membrane to gradually move backwards, so that the pulse valve is gradually opened, and the pressure of the gas distribution box is gradually reduced; when the pulse valve is fully open, the gas distribution tank pressure supplied to the electromagnetic pulse valve has been gradually reduced. The indexes such as peak pressure and output pressure rising rate of the ash removing agent synchronously drop, and the ash removing effect is seriously affected.
After the pulse valve is blown into the bag filter from the last sixty century, the requirement on the blowing performance of the pulse valve is continuously improved due to the progress of the pulse blowing technology, and particularly, the peak pressure and the output pressure rising rate are two key indexes.
Disclosure of Invention
The invention aims to solve the technical problems that: how to increase the peak pressure and the output pressure rising rate when the pulse valve blows.
In order to solve the technical problems, the technical scheme of the invention provides an electromagnetic pulse valve for controlling an airflow channel in a high-speed differential mode, which comprises a valve body, wherein a main diaphragm is arranged at the bottom of the valve body, an output port is arranged right below the main diaphragm, a first rear air chamber and a first front air chamber are respectively arranged at the upper side and the lower side of the main diaphragm, a first throttling hole is arranged on the main diaphragm or the valve body, the first rear air chamber is communicated with a second front air chamber, a first exhaust hole is arranged at one side of the second front air chamber, a secondary diaphragm for sealing the first exhaust hole is arranged above the first exhaust hole, a second rear air chamber is arranged above the secondary diaphragm, a second throttling hole for enabling the second front air chamber to be communicated with the second rear air chamber is arranged on the secondary diaphragm or the valve body, an armature for sealing the second exhaust hole is arranged above the second rear air chamber, and the electromagnetic pulse valve is characterized in that the first throttling hole is communicated with the second front air chamber through an air inlet channel, and the second front air chamber is communicated with the first rear air chamber through a central channel.
Preferably, the first throttling hole is connected with one end of an air inlet channel, and the other end of the air inlet channel is arranged in the second front air chamber; the other end of the air inlet channel is communicated with one end of the central channel, and the other end of the central channel is arranged in the first rear air chamber.
Preferably, the other end of the air inlet channel is arranged at a position close to the second throttling hole and a position close to the contact position of the first exhaust hole and the auxiliary diaphragm.
Preferably, the other end of the air inlet passage is opposite to the second orifice.
Preferably, the secondary diaphragm is provided with at least one second orifice; at least one first throttling hole is arranged on the main membrane; the number of intake passages is the same as the number of first throttle holes.
Preferably, the central channels are separate pipeline channels, and the number of the central channels is the same as that of the air inlet channels.
Preferably, the central passage is an entire cavity communicating with the first rear air chamber.
Preferably, one side of the lower part of the valve body is provided with a gas inlet communicated with the first rear air chamber, and the first throttling hole is arranged on the main diaphragm or a position on the valve body close to the gas inlet.
Preferably, the top of the main diaphragm is connected with the inner wall of the valve body above the main diaphragm through a first compression spring; the top of the auxiliary diaphragm is connected with the inner wall of the valve body above the auxiliary diaphragm through a second compression spring.
The invention is to prevent the air flow entering from the first throttle hole from interfering with the exhaust of the first exhaust hole. The air flow entering through the first throttling hole does not directly enter the first rear air chamber, but enters the first rear air chamber through a differential air flow channel (namely an air inlet channel) to the first air outlet hole and enters the first rear air chamber through a central channel behind the main diaphragm, so that the main diaphragm clings to an output port of the pulse valve, and the valve is closed.
The invention solves the problems that when the first exhaust hole is exhausted, the gas from the first throttling hole is directly exhausted from the first exhaust hole, even if the first throttling hole stops inflating the first rear air chamber, the exhaust of the first exhaust hole is not interfered any more, the first rear air chamber is rapidly depressurized, and the pulse valve is rapidly opened. The indexes such as peak pressure and output pressure rising rate are obviously improved, and the ash removing capability is enhanced.
Drawings
FIG. 1 is a schematic diagram of an original solenoid valve for differentially controlling air flow channels (closed state);
FIG. 2 is a schematic diagram of an electromagnetic pulse valve (open state) of an original differential control airflow channel;
FIG. 3 is a schematic illustration of an electromagnetic pulse valve (closed state) for a high speed differential control airflow path;
fig. 4 is a schematic diagram (open state) of an electromagnetic pulse valve for high-speed differential control of air flow channels.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
The terms "upper" and "lower" in this embodiment are used for convenience in explaining the structural relationship of the present invention, and are dependent on the positions in the drawings of the specification.
The invention provides an electromagnetic pulse valve for a high-speed differential control airflow channel, which comprises a valve body 17, as shown in fig. 3 and 4, wherein a main diaphragm 11 is arranged in the middle of the bottom of the valve body 17, an output port 13 is arranged right below the main diaphragm 11, the main diaphragm 11 is used for sealing the output port 13, a first rear air chamber 2 and a first front air chamber 1 are respectively arranged on the upper side and the lower side of the main diaphragm 11, a gas inlet communicated with the first rear air chamber 2 is arranged on one side of the lower part of the valve body 17, a first throttling hole 12 is arranged on the main diaphragm 11 or on the valve body 17 and close to the gas inlet, the first rear air chamber 2 is communicated with the second front air chamber 3, a first exhaust hole 10 is arranged on one side of the second front air chamber 3, an auxiliary diaphragm 9 used for sealing the first exhaust hole 10 is arranged above the first exhaust hole 10, a second rear air chamber 4 is arranged above the auxiliary diaphragm 9 or on the valve body 17, a second throttling hole 7 used for enabling the second front air chamber 3 and the second rear air chamber 4 to be communicated is arranged on one side of the second rear air chamber 4, a second exhaust hole 8 is arranged above the second rear air chamber 8, and an armature 6 used for sealing the second exhaust hole 8 is arranged above the second rear air chamber 8. The top of the main diaphragm 11 is connected with the inner wall of the valve body 17 above the main diaphragm 11 through a first compression spring 14; the top of the auxiliary diaphragm 9 is connected with the inner wall of the valve body 17 above the auxiliary diaphragm 9 through a second compression spring 5; the armature 6 is connected with the electromagnetic pilot head through a compression spring.
The first orifice 12 communicates with the first rear air chamber 2 through the intake passage 15 and the center passage 16. The first throttling hole 12 is communicated with the second front air chamber 3 through an air inlet channel 15, the second front air chamber 3 is communicated with the first rear air chamber 2 through a central channel 16, the first throttling hole 12 is separated from the first rear air chamber 2 through the air inlet channel 15 and cannot be directly communicated, and therefore gas can be communicated with the first rear air chamber 2 after sequentially passing through the air inlet channel 15 and the central channel 16. The first orifice 12 is connected with one end of an air inlet channel 15, the other end of the air inlet channel 15 is arranged in the second front air chamber 3, the other end of the air inlet channel 15 is close to the position of the second orifice 7 and the position of the first exhaust hole 10 contacting the auxiliary diaphragm 9, the other end of the air inlet channel 15 is communicated with one end of a central channel 16, and the other end of the central channel 16 is arranged in the first rear air chamber 2 and communicated with the first rear air chamber 2. The other end of the intake passage 15 is opposite to the second orifice 7.
Wherein the primary diaphragm 11 is provided with at least one first orifice 12 and the secondary diaphragm 9 is provided with at least one second orifice 7. The number of intake passages 15 is the same as the number of first throttle holes 12; the central passages 16 may be separate pipe passages, the number of the central passages 16 being the same as the number of the intake passages 15; the central channel 16 may also be an entire cavity communicating with the first rear air chamber 2.
When the electric signal drives the armature 6 of the electromagnetic pilot head to move, the second exhaust hole 8 is opened, and the auxiliary diaphragm 9 is decompressed and then extended by the second rear air chamber 4. The first exhaust hole 10 is opened, and the intake passage 15 is directly connected to the atmosphere through the first exhaust hole 10 since the intake passage 15 is close to the port of the first exhaust hole 10. The compressed air passing through the air inlet passage 15 from the first orifice 12 is directly discharged, the first rear air chamber 2 of the main diaphragm 11 is not pressurized, the main diaphragm 11 is moved backward, and the output port 13 is opened, i.e., the pulse valve is opened rapidly.
Claims (6)
1. An electromagnetic pulse valve for high-speed differential control of an airflow channel comprises a valve body (17), wherein a main diaphragm (11) is arranged at the bottom of the valve body (17), an output port (13) is arranged under the main diaphragm (11), a first rear air chamber (2) and a first front air chamber (1) are respectively arranged on the upper side and the lower side of the main diaphragm (11), a first throttle hole (12) is arranged on the main diaphragm (11) or the valve body (17), the first rear air chamber (2) is communicated with a second front air chamber (3), a first exhaust hole (10) is arranged on one side of the second front air chamber (3), a secondary diaphragm (9) for sealing the first exhaust hole (10) is arranged above the first exhaust hole (10), a second rear air chamber (4) is arranged above the secondary diaphragm (9), a second throttle hole (7) for enabling the second front air chamber (3) to be communicated with the second rear air chamber (4) is arranged on the valve body (17), a second exhaust hole (8) is arranged on one side of the second rear air chamber (4), a second armature (8) is arranged above the second exhaust hole (8), and the second throttle hole (8) is communicated with the first air chamber (4) through the first throttle hole (12), the second front air chamber (3) is communicated with the first rear air chamber (2) through a central channel (16);
the other end of the air inlet channel (15) is arranged at a position close to the second throttling hole (7) and a position close to the contact position of the first exhaust hole (10) and the auxiliary diaphragm (9);
the first throttling hole (12) is connected with one end of the air inlet channel (15), and the other end of the air inlet channel (15) is arranged in the second front air chamber (3); the other end of the air inlet channel (15) is communicated with one end of the central channel (16), and the other end of the central channel (16) is arranged in the first rear air chamber (2);
the other end of the air inlet channel (15) is opposite to the second orifice (7);
the first throttling hole (12) is separated from the first rear air chamber (2) through the air inlet channel (15) and cannot be directly communicated, so that the air can be communicated with the first rear air chamber (2) after sequentially passing through the air inlet channel (15) and the central channel (16).
2. An electromagnetic pulse valve for high speed differential control of air flow passage according to claim 1, characterized in that said secondary diaphragm (9) is provided with at least one second orifice (7); at least one first orifice (12) is arranged on the main membrane (11); the number of intake passages (15) is the same as the number of first throttle holes (12).
3. An electromagnetic pulse valve for high speed differential control of air flow passages according to claim 2, characterized in that said central passages (16) are separate pipe passages, the number of central passages (16) being the same as the number of air inlet passages (15).
4. An electromagnetic pulse valve for high speed differential control of air flow passages according to claim 2, characterized in that said central passage (16) is an entire cavity communicating with the first rear air chamber (2).
5. An electromagnetic pulse valve for high speed differential control of air flow passage according to claim 1, characterized in that one side of the lower part of said valve body (17) is provided with a gas inlet communicating with the first rear air chamber (2), and the first orifice (12) is provided on the main diaphragm (11) or on the valve body (17) at a position close to the gas inlet.
6. An electromagnetic pulse valve for high-speed differential control air flow channel according to claim 1, characterized in that the top of the main diaphragm (11) is connected with the inner wall of the valve body (17) above the main diaphragm (11) through a first compression spring (14); the top of the auxiliary diaphragm (9) is connected with the inner wall of the valve body (17) above the auxiliary diaphragm (9) through a second compression spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211238265.6A CN115487612B (en) | 2022-10-11 | 2022-10-11 | Electromagnetic pulse valve for high-speed differential control airflow channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211238265.6A CN115487612B (en) | 2022-10-11 | 2022-10-11 | Electromagnetic pulse valve for high-speed differential control airflow channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115487612A CN115487612A (en) | 2022-12-20 |
| CN115487612B true CN115487612B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211238265.6A Active CN115487612B (en) | 2022-10-11 | 2022-10-11 | Electromagnetic pulse valve for high-speed differential control airflow channel |
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| CN (1) | CN115487612B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04285381A (en) * | 1991-03-14 | 1992-10-09 | Kishikawa Tokushu Valve Seisakusho:Kk | Rapid opening/closing pulse valve |
| CN2550590Y (en) * | 2002-06-26 | 2003-05-14 | 力挥企业有限公司 | Diaphragm valve struture improvement |
| CN200954422Y (en) * | 2006-09-21 | 2007-10-03 | 武汉建腾科技有限公司 | Pulse valve for pulse-bag-type duster |
| JP2012247056A (en) * | 2011-05-27 | 2012-12-13 | Nippon Air Filter Kk | Diaphragm valve |
| CN103574092A (en) * | 2013-10-31 | 2014-02-12 | 成都易态科技有限公司 | Pulse valve |
| CN211901661U (en) * | 2020-03-10 | 2020-11-10 | 上海尚泰环保配件有限公司 | Electromagnetic pulse valve with orifice filter |
| CN213885371U (en) * | 2020-10-29 | 2021-08-06 | 昆山盛庆隆环保设备有限公司 | Explosion-proof central dust collector convenient to operation |
| CN215258109U (en) * | 2021-01-11 | 2021-12-21 | 福鼎市鑫龙机械部件有限公司 | Electromagnetic pulse valve using piston with sealing ring |
| CN114689353A (en) * | 2022-03-28 | 2022-07-01 | 苏州协昌环保科技股份有限公司 | Automatic fault detection device, method and system |
-
2022
- 2022-10-11 CN CN202211238265.6A patent/CN115487612B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04285381A (en) * | 1991-03-14 | 1992-10-09 | Kishikawa Tokushu Valve Seisakusho:Kk | Rapid opening/closing pulse valve |
| CN2550590Y (en) * | 2002-06-26 | 2003-05-14 | 力挥企业有限公司 | Diaphragm valve struture improvement |
| CN200954422Y (en) * | 2006-09-21 | 2007-10-03 | 武汉建腾科技有限公司 | Pulse valve for pulse-bag-type duster |
| JP2012247056A (en) * | 2011-05-27 | 2012-12-13 | Nippon Air Filter Kk | Diaphragm valve |
| CN103574092A (en) * | 2013-10-31 | 2014-02-12 | 成都易态科技有限公司 | Pulse valve |
| CN211901661U (en) * | 2020-03-10 | 2020-11-10 | 上海尚泰环保配件有限公司 | Electromagnetic pulse valve with orifice filter |
| CN213885371U (en) * | 2020-10-29 | 2021-08-06 | 昆山盛庆隆环保设备有限公司 | Explosion-proof central dust collector convenient to operation |
| CN215258109U (en) * | 2021-01-11 | 2021-12-21 | 福鼎市鑫龙机械部件有限公司 | Electromagnetic pulse valve using piston with sealing ring |
| CN114689353A (en) * | 2022-03-28 | 2022-07-01 | 苏州协昌环保科技股份有限公司 | Automatic fault detection device, method and system |
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|---|---|
| CN115487612A (en) | 2022-12-20 |
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