CN201539592U - Closed pneumatic gate valve - Google Patents
Closed pneumatic gate valve Download PDFInfo
- Publication number
- CN201539592U CN201539592U CN2009202111253U CN200920211125U CN201539592U CN 201539592 U CN201539592 U CN 201539592U CN 2009202111253 U CN2009202111253 U CN 2009202111253U CN 200920211125 U CN200920211125 U CN 200920211125U CN 201539592 U CN201539592 U CN 201539592U
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- push
- hole
- pull valve
- valve
- gate valve
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Abstract
The utility model relates to a closed pneumatic gate valve, which comprises a gate valve main body and an air cylinder. A full-closed connecting support is arranged between the gate valve main body and the air cylinder; two access holes are arranged on the full-closed connecting support and connected with the full-closed connecting support through bolts; a hole cover is arranged on each access hole; a nitrogen purging hole and a discharging hole are arranged on the hole cover; the nitrogen purging hole is connected with a nitrogen pipeline; and the discharging hole is connected with a gas discharging pipeline arranged on the top portion of a producer. The closed pneumatic gate valve has the advantages of reducing environment pollution, enhancing operational safety, having strong interchangeability with equipment, needing low equipment investment cost and maintenance cost and saving cost.
Description
[technical field]
The utility model relates to the Iron And Steel Industry technical field, specifically, is a kind of enclosed pneumatic push-pull valve.
[background technique]
In Iron And Steel Industry, the application of push-pull valve is quite general.Push-pull valve is mainly used in the conveying solid substance medium, is applicable to all kinds of powders or granular material.In device, the general and rotary valve of push-pull valve is used, and also can use separately.The effect of push-pull valve is to work the effect of blocking in device.The Specifeca tion speeification scope of push-pull valve is: nominal pressure generally is PN=0.4MPa, and generally below 120 ℃, the inside nominal diameter major part is at DN200～600mm for Applicable temperature.
Distinguish by structural type, push-pull valve can be divided into multiple patterns such as fan-shaped push-pull valve and lens type push-pull valve.The working principle of push-pull valve is on the valve plate frame that moves or rotate two valve plate passages to be set, and one of them valve plate passage is made into the blind plate type, and the another one passage then is made into the through hole type.When real work,, aim at the pipeline center when blind plate type passage or through hole type passage are switched and finish cut-out and the connection requirement of push-pull valve pipeline by the traversing or rotating machinery of valve plate frame.No matter be the push-pull valve of which kind of type, in the operation that valve cuts off and connects, certainly exist following operation program: at first be that the sealed connection of push-pull valve is thrown off, carry out the switching of through hole and blind plate passage then, recover sealed connection at last again.
What the gas station producer used is a kind of Pneumatic unidirectional push-pull valve 6, is the semi-open type structure.It mainly acts on is to be used for controlling the raw coal that enters in the burner hearth 8, sees also accompanying drawing 1.
See also accompanying drawing 2, Pneumatic unidirectional push-pull valve 6 mainly is made up of parts such as valve body 9, seal ring 10, plate 11, filler 12, Gland 13, support 15, handle 14 and cylinders 17; During work, drive plate 11 by cylinder 17 and move reciprocatingly, realize the on off state of valve, thereby realize the break-make of control material; Inner with the extraneous sealing of push-pull valve mainly relies on Gland 13 that filler 12 is compressed with plate 11 and realizes with valve body 9 tight contacts; Because the surface area of plate 11 is very big, causes the sealing area of filler 12 also very big, the frictional force between filler 12 and the plate 11 increases, and makes filler 12 wearing and tearing easily, forms leakage point.
In addition, in the using process of reality, the coal in valve plate 11 and the coal bunker 4 is directly to contact, and the upper surface of valve plate 11 is easy to be infected with ickings, when it moves back and forth, easily ickings is taken in the filler 12, thereby has aggravated the wearing and tearing of filler 12, causes leakage.
Owing to the leakage point that above reason causes, make that the coal gas in the producer 8 leak by push-pull valve 6, operator and maintainer's personal safety is worked the mischief, environment is formed pollute, the maintenance amount is also bigger.
In order to solve this type of problem of Pneumatic unidirectional push-pull valve, following several scheme is arranged generally:
(1) improves for the filler in the Pneumatic unidirectional push-pull valve 12.This generally has two kinds of methods:
First method is the material that changes filler, select rational filler to seal, but because this class sealing means is that filler 12 directly directly contacts with valve plate 11, as select for use the filler on hard ground to produce very galling to valve plate 11, cause its sealing surface uneven, valve plate 11 can not well be cooperated with seal ring 10, cause valve internal to leak.As the packing of selecting the quality softness for use then packing_seal damage easily.And also have ickings on the plate 11 often, the operating mode situation is more special, and is therefore very difficult for the packing Material Selection, and safety coefficient is also lower when using, and is not suitable for using;
Second method is the sealing station that changes filler 12, and the part that filler 12 is sealed is cylinder piston rod 16 rather than plate 11.Because cylinder piston rod 16 is thinner, the surface area ratio sealing plate 11 that filler 12 is sealed is much smaller, so sealability is reliable, the surface friction drag that the filler part is produced is also much smaller.But this method only is suitable for the bigger valve of valve body 9, and the valve of our factory is if will adopt this sealing means just must do change to valve body, and up-front investment is bigger, is not suitable for use;
(2) original packing_seal 12 of cancellation and Gland 13 are installed nitrogen gas seal equipment at this place.But for supply gas and detection seal arrangement, complicated buffer gas system must be set, cost is higher, and the plant maintenance amount is very big, is not suitable for realizing at our factory.
Because what push-pull valve was carried is solid dielectric, for different operating points, the structure of push-pull valve also is different.Under different working conditions, how to guarantee the complete machine performance of valve, be the problem that will solve in the push-pull valve development.
Comparison by prior art and to the investigation of our factory actual conditions, we find the problem that existing method can not good treatment our factory Pneumatic unidirectional push-pull valve coal gas leaks.So we improve the structure of push-pull valve according to own on-the-spot actual conditions, change the Pneumatic unidirectional push-pull valve into full-closed structure, thereby obtain to prevent the effect of gas leakage.We also find in patent retrieval subsequently, because the particularity of Pneumatic unidirectional push-pull valve use occasion is not found similar patent both at home and abroad, therefore structurally have certain novelty.
[model utility content]
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of enclosed pneumatic push-pull valve is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of enclosed pneumatic push-pull valve comprises the push-pull valve body, seal ring, and plate, filler, Gland, handle connects support, and cylinder piston rod and cylinder between push-pull valve body and cylinder, are provided with a totally enclosed connection support.
According to a kind of enclosed pneumatic push-pull valve of the present utility model, the purpose of totally enclosed connection support is for replacing original open support, coal gas just can not leak when operation like this, avoided environmental pollution, guarantee operator's safety, and rigidity is also better than original, and structure is also compacter;
According to a kind of enclosed pneumatic push-pull valve of the present utility model, described totally enclosed connection support is provided with 2 access openings, connects with the totally enclosed support that is connected by bolt; Access opening be provided with port lid, in maintenance or when safeguarding, open this port lid and just can overhaul inside;
According to a kind of enclosed pneumatic push-pull valve of the present utility model, described port lid is provided with nitrogen purge hole and one and diffuses the hole, and the nitrogen purge hole is connected with nitrogen pipeline; Diffusing the hole is connected with producer top coal gas diffusion pipeline;
According to a kind of enclosed pneumatic push-pull valve of the present utility model, before maintenance repair and safeguarding, open the nitrogen valve, so that purge the dust stratification at valve seat and transmission position, it is opened flexibly, the coal gas that displacement is inner is guaranteed safety;
According to a kind of enclosed pneumatic push-pull valve of the present utility model, in daily use, the coal gas that leak at this place and the nitrogen of purging can enter the coal gas diffusion pipe and are discharged in the atmosphere by diffusing the hole, have avoided coal gas to hoard in inside.
Compared with prior art, good effect of the present utility model is:
(1) sealing of the present utility model is splendid, has stopped the problem of original gas leakage, has reduced the pollution of environment;
(2) the utility model has increased the Security of operation, and former Open architecture exists the plate of gas leakage and motion can cause mechanical wounding, by improving the possibility of having avoided above danger fully;
(3) interchangeability of equipment of the present utility model is strong, and installation dimension need not that the coal system ontology is done any change and just can realize with original consistent;
(4) equipment input expense of the present utility model and maintenance cost are few, reduce the push-pull valve maintenance times, have saved cost.
[description of drawings]
Fig. 1 is a producer coal system schematic;
Fig. 2 is a Pneumatic unidirectional push-pull valve structural drawing;
Fig. 3 is open connection support schematic representation;
Fig. 4 is totally enclosed connection support schematic representation;
Fig. 5 is enclosed pneumatic push-pull valve structural drawing;
Label in the accompanying drawing is respectively: 1, run coal bin, 2, manual unidirectional push-pull valve, 3, pneumatic dome valve, 4, the metering coal bunker, 5, dredging hole, 6, pneumatic push-pull valve, 7, expansion joint, 8, producer, 9, push-pull valve body, 10, seal ring, 11, plate, 12, filler, 13, Gland, 14, handle, 15, open connection support, 16, cylinder piston rod, 17, cylinder, 18, totally enclosed connection support, 19, access opening, 20, port lid, 21, diffuse the hole, 22, the nitrogen purge hole.
[embodiment]
The embodiment of a kind of enclosed pneumatic push-pull valve of the utility model below is provided.
Embodiment 1
See also accompanying drawing 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 have installed this enclosed pneumatic push-pull valve in the coal system of producer.A kind of enclosed pneumatic push-pull valve comprises push-pull valve body 9, seal ring 10, plate 11, filler 12, Gland 13, handle 14 connects support 18, cylinder piston rod 16 and cylinder 17, between push-pull valve body 9 and cylinder 17, a totally enclosed connection support 18 is set, its purpose is for replacing original open support 15, coal gas just can not leak when operation like this, has avoided environmental pollution, guarantees operator's safety, and rigidity is also better than original, and structure is also compacter;
Described totally enclosed connection support 18 is provided with 2 access openings 19, connects with the totally enclosed support 18 that is connected by bolt; Access opening 19 be provided with port lid 20, in maintenance or when safeguarding, open this port lid 20 and just can overhaul inside;
Described port lid 20 is provided with nitrogen purge hole 22 and one and diffuses hole 21, and nitrogen purge hole 22 is connected with nitrogen pipeline; And be provided with valve, and before maintenance repair and safeguarding, open the nitrogen valve, so that purge the dust stratification at valve seat and transmission position, it is opened flexibly, the coal gas that displacement is inner is guaranteed safety; Diffusing hole 21 is connected with producer top coal gas diffusion pipeline; In daily use, the coal gas that leak at this place and the nitrogen of purging can enter the coal gas diffusion pipe and are discharged in the atmosphere by diffusing the hole, have avoided coal gas to hoard in inside.
The utility model is a kind of special industrial valve that is applicable to that granular or powder material are carried, but because the defective of device structure, be easy to the spillage risk medium in plate packing seal place, often we are not dangerous higher to its processing method, be exactly that investment cost is big, the maintenance cost height, become is the problem of puzzlement enterprise always.And this closed pneumatic push-pull valve has solved above problem fully, and little investment, and is safe and reliable, easy to operate, and the operation maintenance workload is little, and the efficient height has good use value and economic benefit, has vast market prospect.
Advantage of the present utility model is: sealing of the present utility model is splendid, has stopped the problem of original gas leakage, has reduced the pollution of environment; The utility model has increased the Security of operation, and former Open architecture exists the plate of gas leakage and motion can cause mechanical wounding, by improving the possibility of having avoided above danger fully; The interchangeability of equipment of the present utility model is strong, and installation dimension need not that the coal system ontology is done any change and just can realize with original consistent; Equipment input expense of the present utility model and maintenance cost are few, reduce the push-pull valve maintenance times, have saved cost.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model design; can also make some improvements and modifications, these improvements and modifications also should be considered as in the protection domain of the present utility model.
Claims (4)
1. an enclosed pneumatic push-pull valve comprises push-pull valve body and cylinder, it is characterized in that, between push-pull valve body and cylinder, a totally enclosed connection support is set.
2. a kind of enclosed pneumatic push-pull valve as claimed in claim 1 is characterized in that described totally enclosed connection support is provided with 2 access openings.
3. a kind of enclosed pneumatic push-pull valve as claimed in claim 2 is characterized in that, described access opening be provided with port lid.
4. a kind of enclosed pneumatic push-pull valve as claimed in claim 3 is characterized in that, described port lid is provided with nitrogen purge hole and one and diffuses the hole, and the nitrogen purge hole is connected with nitrogen pipeline; Diffusing the hole is connected with producer top coal gas diffusion pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202111253U CN201539592U (en) | 2009-10-23 | 2009-10-23 | Closed pneumatic gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202111253U CN201539592U (en) | 2009-10-23 | 2009-10-23 | Closed pneumatic gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539592U true CN201539592U (en) | 2010-08-04 |
Family
ID=42591044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202111253U Expired - Fee Related CN201539592U (en) | 2009-10-23 | 2009-10-23 | Closed pneumatic gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539592U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062225A (en) * | 2011-02-12 | 2011-05-18 | 上海科发泵阀制造有限公司 | Open ash valve |
| CN111019709A (en) * | 2019-11-22 | 2020-04-17 | 唐山科源环保技术装备有限公司 | Device and method for recycling coal gas discharged to coal charger in coal charging process |
| CN113883291A (en) * | 2021-09-09 | 2022-01-04 | 孙自玲 | Gate opening air-reversing gate valve |
-
2009
- 2009-10-23 CN CN2009202111253U patent/CN201539592U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062225A (en) * | 2011-02-12 | 2011-05-18 | 上海科发泵阀制造有限公司 | Open ash valve |
| CN111019709A (en) * | 2019-11-22 | 2020-04-17 | 唐山科源环保技术装备有限公司 | Device and method for recycling coal gas discharged to coal charger in coal charging process |
| CN113883291A (en) * | 2021-09-09 | 2022-01-04 | 孙自玲 | Gate opening air-reversing gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20161023 |