CN103244693B - Abrasion-proof exhaust valve - Google Patents
Abrasion-proof exhaust valve Download PDFInfo
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- CN103244693B CN103244693B CN201210286145.3A CN201210286145A CN103244693B CN 103244693 B CN103244693 B CN 103244693B CN 201210286145 A CN201210286145 A CN 201210286145A CN 103244693 B CN103244693 B CN 103244693B
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Abstract
A kind of abrasion-proof exhaust valve, relate to technical field of system control, include valve body, cylinder block and flap, flap is connected with the valve rod in cylinder block, wherein one end of valve body is provided with valve gap, this valve gap the inner is provided with and is enclosed within seal ring outside flap and filler, the valve body the other end is first interface, this first interface is crimped with seal retainer ring, sealing gasket is provided with in the outer end of seal retainer ring, the tapered end of flap interts in sealing gasket and seal retainer ring, valve rod has one end pass in the tapered end of flap and be connected with the leading truck being contained in sealing gasket outer end, sealing gland ring is provided with between leading truck and sealing gasket, the face that sealing gland ring contacts with flap tapered end is provided with circular groove, this circular groove opening is towards flap, through hole is provided with in the sidewall of sealing gland ring, through hole one end is communicated with circular groove, the other end is the 4th interface, this abrasion-proof exhaust valve can prevent dusty gas to the wearing and tearing of the sealed working face of flap and sealing gasket effectively, extend the working life of valve, reach more than 1 year working life.
Description
Technical field
The present invention relates to technical field of system control, especially a kind of abrasion-proof exhaust valve.
Background technique
Existingly generally use rubber seal outlet valve for the outlet valve be arranged on Pneumatic conveying pump storehouse, as Fig. 1, rubber seal outlet valve mainly contains valve body 101, flap 103, leading truck 112, sealing gasket 111, seal retainer ring 110, filler 107, pressure cap 108, seal ring 106, valve gap 105, valve rod 104, spring 114, cylinder block 102, cylinder head 115, piston 116, piston locating pad 117 forms, this outlet valve has three interfaces, first interface 109 is connected with pump storehouse by flange, second interface 113 is connected with the pipeline of dust collector by flange, 3rd interface 118 is connected with pressurized gas by high pressure hose, during work, Hysteresis for Pneumatic Control Valves pressurized gas carries out Quick-pressing or fast evacuation by the 3rd interface to cylinder block, when the pressurized gas of cylinder block is by Hysteresis for Pneumatic Control Valves fast evacuation, valve rod is under the elastic force effect of spring, move to cylinder head direction, drive and move together with its flap linked together, when the tapered end of flap and sealing retaining ring touch, the conical surface of flap is pressed onto the sealing surface of sealing gasket, and now outlet valve is in closed condition, when the pressurized gas of cylinder block is by pneumatic control valve Quick-pressing, piston is compressed the effect of gas, overcome the elastic force effect of valve rod spring, to leaving the motion of cylinder head direction, drive and move together with its flap linked together, the tapered end of flap leaves the sealing surface of sealing gasket, until when piston movement is to piston locating pad, now outlet valve is in full open position, now, the gas in pump storehouse enters valve body by the passage of outlet valve open position and enters dust collector from the second interface by dust collector connecting tube again, is finally discharged in air.The Sealing of filler, pressure cap, seal ring, valve gap, valve rod composition prevents outlet valve dusty gas when open mode to be discharged in air; There is following problem in such rubber seal outlet valve:
1, the sealing gasket of rubber seal outlet valve is after startup a period of time, is subject to flap percussion back and forth, can come off or the defect such as crackle on the small surface of appearance slowly with the position of flap surface contact; Pneumatic conveying pump is when pumping granular material, outlet valve is in closed condition, when there is foregoing defect in the rubber ring of outlet valve, the pressure that pump storehouse includes dust is that the clearance channel that the high-pressure powder dust concentration gas of 0.3 ~ 0.4Mpa will be formed through the defect flap surface and sealing gasket surface of contact wash away flap and sealing gasket at a high speed, flap and sealing gasket are under the effect of high pressure high dust concentration gas, can be worn and damage very soon, cause exhaust valve operation to lose efficacy;
2, when pump storehouse internal pressure is lower than 0.12Mpa, stop conveying material, now open outlet valve, the moment that Ventilating valve is just being opened, between flap and sealing gasket, gap is little, pump storehouse internal pressure be the dusty gas of 0.12Mpa with high flow velocities by the passage compared with small gap between flap and rubber gasket, directly wash away the sealed working face of flap and sealing gasket, comparatively fast just be worn and damage, causing exhaust valve operation to lose efficacy.
Such rubber seal outlet valve valve is only 10 days working life, and by mixing Tungsten carbite to flap surface, then heat-treating, making surface hardness reach more than HRc50, the life-span is no more than 20 days.
Summary of the invention
The invention provides a kind of abrasion-proof exhaust valve, it can solve existing outlet valve flap and sealing gasket and easily damage the problem causing valve working life short.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: it includes valve body, the cylinder block be connected with this valve body, stretch into the flap in described valve body, described flap is connected with the valve rod in described cylinder block, described valve body one end is connected with described cylinder block, this end is provided with valve gap, this valve gap the inner is provided with seal ring and filler, described seal ring and described filler are enclosed within outside described flap, the described valve body the other end is the first interface be connected with pump storehouse, this first interface is crimped with seal retainer ring, sealing gasket is provided with in the outer end of described seal retainer ring, the tapered end of described flap interts in described sealing gasket and seal retainer ring, described valve rod has one end pass in the tapered end of described flap and be connected with the leading truck being contained in described sealing gasket outer end, the bottom of described valve body is provided with the second interface be connected with dust collector pipeline, sealing gland ring is provided with between described leading truck and described sealing gasket, this sealing gland ring is fixed on the flange of described first interface, the face that described sealing gland ring contacts with described flap tapered end is provided with seal groove, sealing groove is circular groove, this circular groove opening is towards described flap, through hole is provided with in the sidewall of described sealing gland ring, described through hole one end is communicated with described circular groove, the other end is the 3rd interface be connected with pressurized gas pipeline.
Further: the side of described circular groove near described leading truck side leaves gap facing between the face of described flap and described flap, and this clearance distance is L, L is 0.3 ~ 0.5mm.
Owing to have employed technique scheme, the present invention compared with prior art, has following beneficial effect:
1, owing to being equipped with sealing gland ring on first interface, the face that sealing gland ring contacts with flap tapered end is provided with the seal groove of opening towards flap, through hole is provided with in the sidewall of sealing gland ring, through hole one end is communicated with circular groove, the other end is the 3rd interface be connected with pressurized gas pipeline, the pressurized gas pipeline being 0.7Mpa by the 3rd interface and pressure is connected, when Geldart-D particle pump work, the seal groove of sealing gland ring is full of pressurized gas, the pressure of pressurized gas is greater than dusty gas pressure in pump, effectively prevent dusty gas in pump from entering in the seal groove of seal ring, can effectively prevent dusty gas to the wearing and tearing of the sealed working face of flap and sealing gasket, extend the working life of valve, reach more than 1 year working life.
2, gap is left because the side of seal groove near leading truck side faces toward between the face of flap and flap, when stopping conveying material, open outlet valve, the moment that Ventilating valve is just being opened, between flap and sealing gasket, gap is little, the pressurized gas of sealing gland still reaches balance at this moment, dusty gas cannot enter the sealed working face between flap and sealing gasket at once, until when outlet valve is to certain aperture, dusty gas just realizes degassing function by outlet valve, now between flap and sealing gasket, gap is larger, when dusty gas passes through, flow velocity can reduce greatly, slow down the wearing and tearing of dusty gas to flap and sealing gasket, protect flap and sealing gasket further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rubber seal outlet valve of prior art.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the A place enlarged view of Fig. 2.
Embodiment
Below in conjunction with attached Example, the invention will be further described:
The present embodiment as shown in Figure 2, it includes valve body 1, the cylinder block 2 be connected with this valve body, stretch into the flap 3 in valve body 1, flap 3 is connected with the valve rod 4 in cylinder block 2, valve body 1 one end is connected with cylinder block 2, this end is provided with valve gap 5, this valve gap the inner is provided with seal ring 6 and filler 7, pressure cap 8 is had between seal ring 6 and filler 7, seal ring 6, filler 7 and pressure cap 8 are enclosed within outside flap 3, valve body 1 the other end is the first interface 9 be connected with pump storehouse, this first interface is crimped with seal retainer ring 10, sealing gasket 11 is provided with in the outer end of seal retainer ring 10, the tapered end of flap 3 interts in sealing gasket 11 and seal retainer ring 10, valve rod 4 has one end pass in the tapered end of flap 3 and be connected with the leading truck 12 being contained in sealing gasket 11 outer end, the bottom of valve body 1 is provided with the second interface 13 be connected with dust collector pipeline, sealing gland ring 14 is provided with between leading truck 12 and sealing gasket 11, this sealing gland ring is bolted and is fixed on the flange of first interface, the face that sealing gland ring 14 contacts with flap 3 tapered end is provided with seal groove, sealing groove is circular groove 15, this circular groove opening is towards flap 3, through hole 16 is provided with in the sidewall of sealing gland ring 14, one end of through hole 16 is communicated with circular groove 15, the other end is the 3rd interface 17 be connected with pressurized gas pipeline, the side of circular groove near leading truck 12 side leaves gap 18 facing between the face of flap 3 and flap 3, this clearance distance L is 0.4mm, 3rd interface 17 and pressure are that the pressurized gas pipeline of 0.7Mpa is connected, mounting ball valve on pipeline, source of the gas can be closed when Geldart-D particle air pump inoperative, during Geldart-D particle pump work, this outlet valve is in closed condition, ball valve is opened, ensure that the seal groove of sealing gland ring is full of pressurized gas, the pressure of pressurized gas is 0.7Mpa, be greater than the gas pressure of dust 0.3Mpa in pump, pressurized gas enters in pump by the gap left between circular groove 15 side and flap 3, effectively prevent dusty gas in pump from entering in the seal groove 15 of sealing gland ring 14, even if sealing gasket is after startup a period of time, be subject to flap percussion back and forth, when with the position of flap surface contact can the small surface of appearance slowly come off or the defect such as crackle, as long as the gap that defect produces is not more than the breathing area in gap, pressurized gas still plays the effect of sealing gland, effectively prevent dusty gas to the wearing and tearing of the sealed working face of flap and sealing gasket, when pump storehouse internal pressure is lower than 0.12Mpa, stop conveying material, now open outlet valve, the moment that Ventilating valve is just being opened, between flap and sealing gasket, gap is little, the pressurized gas of sealing gland still reaches balance at this moment, dusty gas cannot enter the sealed working face between flap and sealing gasket at once, until when outlet valve is to certain aperture, dusty gas just realizes degassing function by outlet valve, now between flap and sealing gasket, gap is larger, when dusty gas passes through, flow velocity can reduce greatly, slow down the wearing and tearing of dusty gas to flap and rubber gasket.
Claims (2)
1. an abrasion-proof exhaust valve, include valve body, the cylinder block be connected with this valve body, stretch into the flap in described valve body, described flap is connected with the valve rod in described cylinder block, described valve body one end is connected with described cylinder block, this end is provided with valve gap, this valve gap the inner is provided with seal ring and filler, described seal ring and described filler are enclosed within outside described flap, the described valve body the other end is the first interface be connected with pump storehouse, this first interface is crimped with seal retainer ring, sealing gasket is provided with in the outer end of described seal retainer ring, the tapered end of described flap interts in described sealing gasket and seal retainer ring, described valve rod has one end pass in the tapered end of described flap and be connected with the leading truck being contained in described sealing gasket outer end, the bottom of described valve body is provided with the second interface be connected with dust collector pipeline, it is characterized in that: between described leading truck and described sealing gasket, be provided with sealing gland ring, this sealing gland ring is fixed on the flange of described first interface, the face that described sealing gland ring contacts with described flap tapered end is provided with seal groove, sealing groove is circular groove, this circular groove opening is towards described flap, through hole is provided with in the sidewall of described sealing gland ring, described through hole one end is communicated with described circular groove, the other end is the 3rd interface be connected with pressurized gas pipeline.
2. abrasion-proof exhaust valve according to claim 1, is characterized in that: the side of described circular groove near described leading truck side leaves gap facing between the face of described flap and described flap, and this clearance distance is L, L is 0.3 ~ 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286145.3A CN103244693B (en) | 2012-08-13 | 2012-08-13 | Abrasion-proof exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286145.3A CN103244693B (en) | 2012-08-13 | 2012-08-13 | Abrasion-proof exhaust valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103244693A CN103244693A (en) | 2013-08-14 |
| CN103244693B true CN103244693B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210286145.3A Active CN103244693B (en) | 2012-08-13 | 2012-08-13 | Abrasion-proof exhaust valve |
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| CN (1) | CN103244693B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872111B (en) * | 2017-03-31 | 2023-09-08 | 桂林电子科技大学 | Water tap leakage quality detection device conforming to industrial engineering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0417877A1 (en) * | 1989-07-21 | 1991-03-20 | Cooper Industries, Inc. | Shearing gate valve |
| CN2314168Y (en) * | 1997-07-16 | 1999-04-14 | 吴晓平 | Gas exhaust valve with wear resistant porcelain lining |
| CN201858364U (en) * | 2010-11-16 | 2011-06-08 | 常新华 | Convenient exhaust valve |
| CN202065485U (en) * | 2011-05-16 | 2011-12-07 | 浙江精杰自动化仪表阀股份有限公司 | Dusty gas decompression control valve |
| CN202768866U (en) * | 2012-08-13 | 2013-03-06 | 广西鱼峰水泥股份有限公司 | Anti-abrasion vent valve |
-
2012
- 2012-08-13 CN CN201210286145.3A patent/CN103244693B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0417877A1 (en) * | 1989-07-21 | 1991-03-20 | Cooper Industries, Inc. | Shearing gate valve |
| CN2314168Y (en) * | 1997-07-16 | 1999-04-14 | 吴晓平 | Gas exhaust valve with wear resistant porcelain lining |
| CN201858364U (en) * | 2010-11-16 | 2011-06-08 | 常新华 | Convenient exhaust valve |
| CN202065485U (en) * | 2011-05-16 | 2011-12-07 | 浙江精杰自动化仪表阀股份有限公司 | Dusty gas decompression control valve |
| CN202768866U (en) * | 2012-08-13 | 2013-03-06 | 广西鱼峰水泥股份有限公司 | Anti-abrasion vent valve |
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| Publication number | Publication date |
|---|---|
| CN103244693A (en) | 2013-08-14 |
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