CN201014005Y

CN201014005Y - Explosion-proof structure of membrane valve

Info

Publication number: CN201014005Y
Application number: CNU2007200050010U
Authority: CN
Inventors: 钟溪圳
Original assignee: LIHUI CO Ltd
Current assignee: LIHUI CO Ltd
Priority date: 2007-02-12
Filing date: 2007-02-12
Publication date: 2008-01-30
Anticipated expiration: 2017-02-12

Abstract

The utility model discloses an explosion-proof structure of a diaphragm valve. A valve body of the utility model essentially consists of a middle diaphragm that is arranged in a lower shell body and an upper shell body that further covers over the valve body, and screws that are used for locking and fixedly sealing the four sides of the valve body. An electromagnetic valve used as drive for starting the valve is arranged in parallel on the valve body. A hollow holding room is arranged in a bursting mode in the center of the upper shell body, resulting in that the electromagnetic valve can be arranged in the center, an upper cover for sealing cover and protection is further arranged above the upper shell body and screws are used for locking and fixing the four sides of the upper shell body. Besides, a side hole for the lines of the electromagnetic valve to go through is arranged at the side of the holding room. Therefore, the utility model can be selectively changed and arranged above an ordinary diaphragm valve. The arrangement is comparatively easy for the simplified structure and the electromagnetic valve can be safely sealed and arranged in the holding room on the valve body and separated from outside, thus sparkle can be effectively avoided to realize explosion proof and the valve can rotate instantly and rapidly without causing any universal delay.

Description

The diaphragm valve blasting resistance structure

Technical field:

The utility model relates to the improvement on a kind of diaphragm valve, especially a kind of structure of finger is simplified configuration easily, the cost of production lower price is reasonable, the alternative replacing is equipped on the diaphragm valve top, prevent effectively that not only spark from producing, reach explosion-proof effect, but and again quick start of moment the diaphragm valve blasting resistance structure that interlock postpones can not take place.

Background technique:

In industrial production and refuse incineration, the filter of waste gas is very important only, general its waste gas can discharge after all must handling through control of dust, this dust collecting equipment inside is provided with some framves with sheathed filter bag, when making the waste gas suction filtration, dust can be removal that filter bag is isolated, filter in the running, for avoiding filter bag surface laying dust too much, filter clean effect and cause ventilative difficulty to lose, advanced design is to use several diaphragm valves with the control superheated steam, the mat automatic control mode makes valve moment unlatching, brute force is filled in the filter bag, oppositely to expel its surperficial laying dust, is collected out by below waste material bucket collection again.

In order to save the energy, and obtain good removing effect, used air pressure is very high, and diaphragm valve must work in moment, general ON time is several seconds zero point approximately, the too big problem of unlikely generation is controlled in more small-sized valve body start, if but pick out behind institute's control valve body when managing greatly, just must control and reach by the multiple layer of differential pressure interlock, promptly in a valve body, be provided with the air chamber of two different sizes, indoorly be respectively equipped with the anisometric dynamic diaphragm of doing, this two diaphragms tool elasticity of destroying or force to yield, center are set as the hard valve to block the below guiding tube, and the periphery of diaphragm is then selected and established several air inlets perforation, making the gas that is imported by adapter can follow the hole is injected in the 2 air chambers respectively, do interlock control, electromagnetic valve is then used in its top, and gas pressure is subjected to storage that this two valves interlock is and then closed when closing, and solenoid valve is when opening, and then gas is run away this two valve is and then opened.

Though fast by this combination action, but inevasible is on the general industrial safety, its dust concentration is met factors such as electrostatic discharge spark or extraneous igniting in the back (being explosion limit) that acquires a certain degree as dashing forward, then very easily cause blast and fire, especially how rice science and technology is just in development like a raging fire in the current whole world, when producing nanoparticle with lapping mode, will produce a large amount of dust, because of its particle little, required ignition energy diminishes relatively, so only need small friction spark or static, promptly may thereby ignite levigation dirt and produce fire and blast.

So at the industrial spark that produces when effectively taking precautions against diaphragm valve in start, its safety design is to establish an airtight casing away from dust in addition than explosive generation part, as shown in Figure 1, solenoid valve on a plurality of diaphragm valve bodies is all concentrated to be located at wherein, the electrical equipment that so can effectively completely cut off equipment partly, fire and the blast that dust caused of igniting accidentally of the spark when preventing solenoid valve conduction.

But such structure, because also will set up casing in addition and add pipeline and select the position configuration, so can improve the manufacture cost of whole group dust collecting equipment, and because solenoid valve and diaphragm valve are to adopt separate configuration, so the centre must be established connecting leg in addition, but so promptly can when its start, cause some delays, and can't reach original disjunctor the time moment QA effect, be its major defect.

In addition, though advanced at present foreign products is existing one-body molded the solenoid valve outside is sealed up one deck sparkproof and explosion-proof design of shell again, but all too high no matter new clothes of finished product cost or maintenance are replaced and are incured a considerable or great expense, except meeting causes the minimizing of industry profit, common customer also generally can't accept, and is its shortcoming.

The model utility content:

Technical problem to be solved in the utility model is: at above-mentioned the deficiencies in the prior art, a kind of diaphragm valve blasting resistance structure is provided, its alternative replacing is equipped on the diaphragm valve top, prevent effectively that not only spark from producing, reach explosion-proof effect, but and again quick start of moment interlock can not take place postpones.

In order to solve the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of diaphragm valve blasting resistance structure, diaphragm in the middle of the installing one in the lower shell body of its valve body, this lower shell body top lid covers a upper shell, last lower shell body seals with the screw interlocking admittedly in four limits, string establishes one as the solenoid valve that opens the power of control on valve body, it is characterized in that: a medium altitude chamber is equipped with at the center of described upper shell, solenoid valve is disposed at this room between two parties, this room top is protected with a loam cake enclosed hood, four limits and with screw locking are provided with the lateral opening of power supply magnet valve outlet on the side of room.

By this; The alternative replacing is equipped on general diaphragm valve top, utilization is simplified structural arrangements and is easier to, solenoid valve can conceal safely in the close room that is disposed on the valve body with outer isolated when making application, can prevent effectively that not only spark from producing, reach explosion-proof effect, but and again quick start of moment interlock can not take place postpones.

Constitution content of the present utility model and other characteristics can describe the back in detail and be tending towards clear in the embodiment who reads following conjunction with figs..

Description of drawings:

Fig. 1 is the application illustration of known structure.

Fig. 2 is a three-dimensional exploded view of the present utility model.

Fig. 3 is the three-dimensional combination figure of Fig. 1.

Fig. 4 is a planimetric map of the present utility model.

Fig. 5 is the three-dimensional combination figure that the utility model is located at another kind of valve body.

Fig. 6 is the planimetric map that the utility model is located at small-sized valve body.

Fig. 7 is the partial cutaway diagrammatic sketch that the utility model is located at multicoat membrane sheet valve body.

Label declaration:

1 valve body, 11 lower shell bodys

12 upper shells, 13 diaphragms

14 screws, 15 rooms

151 hole posts, 15 pores

2

16 loam cakes 16 connect the hole

1

162 bibs, 17 screws

18 lateral opening 19 screw threads

21 cappings of 2 solenoid valves

25 connect axle

Embodiment:

As Fig. 2-shown in Figure 7, the set a kind of diaphragm valve blasting resistance structure of the utility model, its valve body 1 mainly is installing one a middle diaphragm 13 in a lower shell body 11, the top is covered with a upper shell 12 lids again, and in four limits with screw 14 interlockings seal admittedly form, string is established a solenoid valve 2 with as the power that opens control on valve body 1, is primarily characterized in that:

A medium altitude chamber 15 is equipped with at the center of this upper shell 12, and solenoid valve 2 can be disposed between two parties, protects with a loam cake 16 enclosed hoods in the top again, and screw 17 lockings are also used in four limits, and; On the side of room 15, be provided with lateral opening 18 for solenoid valve 2 outlets, by this; Solenoid valve 2 can conceal safely in the close room 15 that is disposed on the valve body 1 with outer isolated, can prevent effectively that not only spark from producing, reach explosion-proof effect, but and again quick start of moment the interlock delay can not take place.

During enforcement, this medium altitude chamber 15 can be long O type tube shape, one-body molded being connected with above upper shell 12, make the center that axle 25 is sitting at room 15 that connects of solenoid valve 2, the side of room 15 can be provided with pore 152, the default hole post 151 that is spirally connected in room 15 inboard four limits, and upper cover plate 16 also is long O type, its four limit is provided with the hole 161 of connecting for screws 17 interlockings, in connecing on 161 limits, hole and being provided with the eyebrow shape bib 162 of projection; This lateral opening 18 can be provided with internal thread 19 with the outlet capping 21 that is spirally connected again.

In addition, see also Fig. 3-shown in Figure 6, this valve body 1 edge can be dish or quadrilateral all can, no matter the big or small valve body 1 of the different appearance of each money all can use, even be provided with on the valve body 1 of multicoat membrane sheet 13 in also can being used in as shown in Figure 7, its configuration is just risen height with its room 15 bottoms and is locked in and establish, and the composition of all the other each ones is all identical.

By this; as Fig. 2-shown in Figure 4; when deathtrap more at dust or that easily ignite; as long as selectivity is changed the upper shell 12 of its diaphragm valve; need not select the position configuration fully separately; so it is very easy fast to install; and can save and known solenoid valve 2 be concentrated must the pull strings unnecessary operation of pipe arrangement of vannings in addition; because total is simplified and be one-body molded; so the reasonable client of cost of production lower price is easy to accept; solenoid valve 2 can be subjected to the latent privacy protection of safety equally during application; directly just be disposed in the room 15 on the valve body 1 with outer isolated; can prevent effectively that not only spark from producing, reach explosion-proof effect, but known structure can not take place because of leading the problem that the pipe interlock postpones in quick start of moment again.

In sum, the utility model novel structure and practicality, function far wins prior art tool progressive and industrial utilization, closes in the patent application important document, proposes novel patent application in accordance with the law.

Claims

1. diaphragm valve blasting resistance structure, diaphragm in the middle of the installing one in the lower shell body of its valve body, this lower shell body top lid covers a upper shell, last lower shell body seals with the screw interlocking admittedly in four limits, and string establishes one as the solenoid valve that opens the power of control on valve body, and it is characterized in that: a medium altitude chamber is equipped with at the center of described upper shell, solenoid valve is disposed at this room between two parties, this room top is protected with a loam cake enclosed hood, and four limits and with the screw locking are provided with the lateral opening of power supply magnet valve outlet on the side of room.

2. diaphragm valve blasting resistance structure according to claim 1, it is characterized in that: described medium altitude chamber is long O type tube shape, one-body molded being connected with on upper shell, make the center that axle is sitting at room that connects of solenoid valve, room side is provided with pore, the default Kong Zhu that is spirally connected in four limits, inboard of room, and upper cover plate also is long O type, its four limit is provided with the hole that connects for screw relative interlocking, in connecing on the limit, hole and being provided with the eyebrow shape bib of projection.

3. diaphragm valve blasting resistance structure according to claim 1 is characterized in that: the described lateral opening internal thread that is provided with the outlet capping that is spirally connected.

4. diaphragm valve blasting resistance structure according to claim 1 is characterized in that: described valve body edge is dish.

5. diaphragm valve blasting resistance structure according to claim 1 is characterized in that: described valve body edge is quadrilateral.

6. diaphragm valve blasting resistance structure according to claim 1 is characterized in that: be provided with the multicoat membrane sheet in the described valve body.