CN204592345U - A kind of Pneumatic knife gate valve - Google Patents
A kind of Pneumatic knife gate valve Download PDFInfo
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- CN204592345U CN204592345U CN201520262848.1U CN201520262848U CN204592345U CN 204592345 U CN204592345 U CN 204592345U CN 201520262848 U CN201520262848 U CN 201520262848U CN 204592345 U CN204592345 U CN 204592345U
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Abstract
The utility model discloses a kind of Pneumatic knife gate valve, comprise: a valve body, valve body is made up of first, second valve body plate of spaced and parallel setting, and the middle position of first, second valve body plate offers first, second runner hole and the runner of this first, second runner hole formation valve body of arranging with one heart; One is arranged on the flashboard between first, second valve body plate; One is arranged on the pneumatic actuator above valve body; And one is arranged on valve rod between valve body and pneumatic actuator, the upper end of valve rod is connected with the output terminal of pneumatic actuator, and its lower end is connected with the top of flashboard; The end face of first, second valve body plate is provided with first, second wiper blade.When flashboard moves upward, the fluid that the plate face of flashboard is adhered to scrapes by first, second wiper blade, and anti-fluid leaks out valve body, and when flashboard moves downward, attachment on the plate face of flashboard scrapes by first, second wiper blade, prevents attachment from entering valve body.
Description
Technical field
The utility model relates to switch valve technical field, particularly relates to a kind of Pneumatic knife gate valve.
Background technique
Pneumatic knife gate valve is exactly briefly use pneumatic actuator control valve, thus realizes the Kai Heguan of valve.It can be divided into upper and lower two-part, and upper half part is pneumatic actuator, and lower half portion is valve.
Enter China from the eighties, less than in the vicennial time, its using scope extend to more wide all trades and professions from general field.From the coal separation of mine power plant, discharge refuse, deslagging, develop into the sewage treatment in city, developed into the special pipeline systems such as food, health, medicine from general industrial pipeline.The disconnecting link plate that blade type gate valve utilizes it ultra-thin achieves that volume is little, flow resistance is little, lightweight, easy installation, the advantage such as quick detachable, the knotty problem that the flow resistance thoroughly solving the class valves such as common gate valve, plate valve, ball valve, stop valve, modulating valve, butterfly valve is large, weight large, it is difficult to install, floor space is large etc.Blade type gate valve occur after, a large amount of general cut-out class valves and modulating valve by replacement.Until today, what global blade type gate valve consumption was maximum is the U.S. and Japan.
The open-shut device of blade type gate valve is flashboard, and moving direction and the flow direction of flashboard are perpendicular, and blade type gate valve can only make standard-sized sheet and complete shut-down, can not make adjustments and throttling.Flashboard has two sealing surfaces, and two sealing surfaces of the most frequently used pattern gate valve form wedge shape, key groove is different with valve parameter, and be generally 50, the flashboard of wedge-type blade type gate valve can make an entirety, is called rigidity flashboard; Also can make the flashboard that can produce micro-deformation, to improve its manufacturability, make up the deviation that sealing surface angle produces in course of working, this flashboard is called Flexible disc.
When blade type gate valve is closed, sealing surface can only rely on pressure medium to seal, and namely relies on pressure medium the sealing surface of flashboard to be pressed to the valve seat of opposite side to ensure the sealing of sealing surface, selfsealings that Here it is.Major part blade type gate valve adopts forced seal, namely during valve closing, external force be relied on by force flashboard to be pressed to valve seat, to ensure the sealing of sealing surface.
Pneumatic knife gate valve has simple and compact for structure, reasonable in design, light-duty material-saving, sealing is reliable, operation light and flexible, volume is little, passage is smooth, flow resistance is little, lightweight, easy installation, the advantage such as quick detachable, at working pressure 1.0MPa-2.5MPa, normally can work in serviceability temperature-29-650 DEG C of situation.Its flashboard of blade type gate valve has shearing function, and the adhesion on scraped sealing surface, removes foreign material automatically, and stainless steel flashboard can prevent from corroding the seal leakage caused.Take the useful space little, effectively can support the intensity of pipeline, the possibility of pipe vibration can be reduced.17-4HP stainless steel selected by flashboard, and corrosion resistant performance improves greatly, can effectively prevent because flashboard corrodes the seal leakage caused.Upper gland packing adopts flexible PTFE, and sealing is reliable, operation light and flexible.The function that flashboard has " plug-in strip ", can to break all kinds of foreign material in medium by effective lock.
At present, pneumatic blade type gate valve generally comprises valve body, flashboard, valve rod and pneumatic actuator, and pneumatic actuator controls flashboard along moving up and down perpendicular to flow direction by valve rod, cuts off or opens the runner in valve body.Due to the plate face of flashboard and fluid contact being attached with fluid, when flashboard moves upward the fluid opened in valve body, the fluid that flashboard adheres to moves upward along with flashboard and is taken out of valve body, causes drainage situation.In addition, when flashboard is in long-term opening state, flashboard is exposed to outside valve body and atmosphere, easily there is attachment in the plate face of flashboard, and when flashboard cuts out, the attachment on flashboard enters valve body along with flashboard and enters in valve body, attachment and with the fluid contact in runner, if attachment is pollutant, just can pollutes the fluid in runner, cause potential safety hazard.
For this reason, applicant carried out useful exploration and trial, have found result of the above problems, technological scheme described below produces under this background.
Model utility content
Technical problem to be solved in the utility model: provide a kind of for the deficiencies in the prior art and prevent drainage, prevent attachment from entering Pneumatic knife gate valve in its valve body.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of Pneumatic knife gate valve, comprising:
One valve body, described valve body is made up of the first valve body plate of spaced and parallel setting and the second valve body plate, and the middle position of first, second valve body plate described offers first, second runner hole of arranging with one heart and this first, second runner hole forms the runner of described valve body;
One is arranged on the flashboard between described first valve body plate and the second valve body plate;
One is arranged on the pneumatic actuator above described valve body by medium-height trestle; And
One is arranged on the valve rod between described valve body and pneumatic actuator, and the upper end of described valve rod is connected with the output terminal of pneumatic actuator, and its lower end is connected with the top of flashboard;
Described pneumatic actuator controls flashboard along moving up and down the runner of opening or cutting off described valve body perpendicular to flow direction by valve rod;
The end face of first, second valve body plate described is provided with first, second wiper blade along the width direction of flashboard, the inner side of first, second wiper blade described respectively with first, second plate face close contact of flashboard.
In a preferred embodiment of the present utility model, be arranged with a dust-proof guide rail in the periphery of described valve rod, the upper end of described dust-proof guide rail is fixed on described pneumatic actuator.
In a preferred embodiment of the present utility model, the lower end of described valve rod is connected with the top of flashboard by a gate pin.
In a preferred embodiment of the present utility model, the outer side surface of first, second valve body plate described is symmetrically arranged with concentric first, second pressure plate loop arranged with first, second runner hole.
In a preferred embodiment of the present utility model, the inner ring surface of first, second pressure plate loop is respectively arranged with first, second lining.
Owing to have employed technological scheme as above, the beneficial effects of the utility model are: by arranging first, second wiper blade on the end face of first, second valve body plate, when flashboard moves upward the runner opening valve body, the fluid that the plate face of flashboard is adhered to scrapes by first, second wiper blade, anti-fluid leaks out valve body, when flashboard moves downward the runner cutting off valve body, attachment on the plate face of flashboard scrapes by first, second wiper blade, prevents attachment from entering valve body.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the three-dimensional structure schematic diagram of an angle of the present utility model.
Fig. 2 is the three-dimensional structure schematic diagram of another angle of the present utility model.
Fig. 3 is front view of the present utility model.
Fig. 4 is side view of the present utility model.
Fig. 5 is I place's enlarged view of Fig. 4.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See Fig. 1 to Fig. 4, what provide in figure is a kind of Pneumatic knife gate valve, comprises valve body 100, flashboard 200, pneumatic actuator 300 and valve rod 400.
Valve body 100 is made up of the first valve body plate 110 and the second valve body plate 120, and the first valve body plate 110 and the second valve body plate 120 are parallel to each other and keep at a certain distance away, and forms the space of moving for flashboard 200 between the first valve body plate 110 and the second valve body plate 120.The middle position of first, second valve body plate 110,120 offers first, second runner hole 111,112 respectively, and first, second runner hole 111,112 is arranged with one heart, and both form the runner 130 of valve body 100.The outer side surface of first, second valve body plate 110,120 is symmetrically arranged with and concentric first, second pressure plate loop 140,150 arranged in first, second runner hole 111,112, first, second pressure plate loop 140,150 is for being tightly connected with the pipeline opening of pipeline, in the present embodiment, first, second pressure plate loop 140,150 adopts rubber to make.The inner ring surface of first, second pressure plate loop 140,150 is respectively arranged with first, second lining 141,151, in the present embodiment, first, second lining 141,151.
Flashboard 200 is arranged between the first valve body plate 110 and the second valve body plate 120, and in the present embodiment, flashboard 200 adopts stainless steel to make.
Pneumatic actuator 300 is arranged on the top of valve body 100 by medium-height trestle 500, and the output terminal 310 of pneumatic actuator 300 is towards valve body 100.The end face of pneumatic actuator 300 is provided with a hanger 320, convenient mobile whole knife gate valve.In the present embodiment, pneumatic actuator 300 is double-acting cylinder.
Valve rod 400 is arranged between valve body 100 and pneumatic actuator 300, and the upper end of valve rod 400 is connected with the output terminal 310 of pneumatic actuator 300, and its lower end is connected with the top of flashboard 200 by a flashboard pin 410, and this flashboard pin 410 adopts stainless steel to make.Be arranged with a dust-proof guide rail 420 in the periphery of valve rod 400, the upper end of dust-proof guide rail 420 is fixed on pneumatic actuator 300 and has on the side of output terminal 310, in the output terminal 310 of pneumatic actuator 300 bag is also contained in by this dust-proof guide rail 420.The design of dust-proof guide rail 420 effectively prevents from being in for a long time on the valve rod 400 in atmosphere environment on the one hand and adheres to attachment, thus has influence on the performance of valve rod 400, also plays positioning action to the motion of valve rod 400 on the other hand.In the present embodiment, dust-proof guide rail 420 adopts stainless steel to make.
The end face of first, second valve body plate 110,120 is provided with first, second wiper blade 610,620 along the width direction of flashboard 200, the inner side of first, second wiper blade 610,620 respectively with first, second plate face 210,220 close contact of flashboard 200.
When pneumatic actuator 300 by valve rod 400 control flashboard 200 open the runner 130 of valve body 100 along moving upward perpendicular to flow direction time, the fluid of attachment on the plate face 210,220 of flashboard 200 scrapes by first, second wiper blade 610,620, and anti-fluid leaks out valve body.When pneumatic actuator 300 controls flashboard 200 along when moving downward the runner 130 cutting off valve body 100 perpendicular to flow direction by valve rod 400, attachment on the plate face 210,220 of flashboard 200 scrapes by first, second wiper blade 610,620, prevents attachment from entering in valve body 100.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a Pneumatic knife gate valve, comprising:
One valve body, described valve body is made up of the first valve body plate of spaced and parallel setting and the second valve body plate, and the middle position of first, second valve body plate described offers first, second runner hole of arranging with one heart and this first, second runner hole forms the runner of described valve body;
One is arranged on the flashboard between described first valve body plate and the second valve body plate;
One is arranged on the pneumatic actuator above described valve body by medium-height trestle; And
One is arranged on the valve rod between described valve body and pneumatic actuator, and the upper end of described valve rod is connected with the output terminal of pneumatic actuator, and its lower end is connected with the top of flashboard;
Described pneumatic actuator controls flashboard along moving up and down the runner of opening or cutting off described valve body perpendicular to flow direction by valve rod; It is characterized in that,
The end face of first, second valve body plate described is provided with first, second wiper blade along the width direction of flashboard, the inner side of first, second wiper blade described respectively with first, second plate face close contact of flashboard.
2. Pneumatic knife gate valve as claimed in claim 1, it is characterized in that, be arranged with a dust-proof guide rail in the periphery of described valve rod, the upper end of described dust-proof guide rail is fixed on described pneumatic actuator.
3. Pneumatic knife gate valve as claimed in claim 1, is characterized in that, the lower end of described valve rod is connected with the top of flashboard by a gate pin.
4. Pneumatic knife gate valve as claimed in claim 1, is characterized in that, the outer side surface of first, second valve body plate described is symmetrically arranged with concentric first, second pressure plate loop arranged with first, second runner hole.
5. Pneumatic knife gate valve as claimed in claim 4, is characterized in that, the inner ring surface of first, second pressure plate loop is respectively arranged with first, second lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262848.1U CN204592345U (en) | 2015-04-24 | 2015-04-24 | A kind of Pneumatic knife gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262848.1U CN204592345U (en) | 2015-04-24 | 2015-04-24 | A kind of Pneumatic knife gate valve |
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| CN204592345U true CN204592345U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520262848.1U Active CN204592345U (en) | 2015-04-24 | 2015-04-24 | A kind of Pneumatic knife gate valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676497A (en) * | 2017-08-28 | 2018-02-09 | 铜陵百锐设备配件有限公司 | A kind of intelligent pneumatic power valve |
| CN110296226A (en) * | 2019-03-15 | 2019-10-01 | 青海中控太阳能发电有限公司 | A kind of self-cleaning operated pneumatic valve |
| CN111237490A (en) * | 2020-03-21 | 2020-06-05 | 中诚阀门集团有限公司 | High-performance zero-leakage knife gate valve |
| CN111420325A (en) * | 2020-04-29 | 2020-07-17 | 大连理工度达安全工程有限公司 | Dust explosion-proof integrated system |
| CN111946845A (en) * | 2020-08-08 | 2020-11-17 | 左东 | Thick liquid powder gate valve for chemical industry |
-
2015
- 2015-04-24 CN CN201520262848.1U patent/CN204592345U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676497A (en) * | 2017-08-28 | 2018-02-09 | 铜陵百锐设备配件有限公司 | A kind of intelligent pneumatic power valve |
| CN110296226A (en) * | 2019-03-15 | 2019-10-01 | 青海中控太阳能发电有限公司 | A kind of self-cleaning operated pneumatic valve |
| CN110296226B (en) * | 2019-03-15 | 2020-12-25 | 青海中控太阳能发电有限公司 | Self-cleaning pneumatic valve |
| CN111237490A (en) * | 2020-03-21 | 2020-06-05 | 中诚阀门集团有限公司 | High-performance zero-leakage knife gate valve |
| CN111420325A (en) * | 2020-04-29 | 2020-07-17 | 大连理工度达安全工程有限公司 | Dust explosion-proof integrated system |
| CN111946845A (en) * | 2020-08-08 | 2020-11-17 | 左东 | Thick liquid powder gate valve for chemical industry |
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