阅读说明：本技术 一种人防工程用防爆超压排气活门 (A kind of civil air defense constructions and installations Antiexplosive overpressure air exhaust valve ) 是由 陆曼青 于 2019-07-25 设计创作，主要内容包括：本发明公开了一种人防工程用防爆超压排气活门,属于人防工程设备领域,包括阀体和阀盖,阀体的右侧安装有法兰,阀体上设有贯穿阀体左、右两端的排气孔,阀体右侧端面上设有与排气孔共轴线的台阶孔,阀盖的左侧端面与台阶孔的底面密封配合；还包括阀盖锁紧机构,阀盖锁紧机构包括周向均匀分布在阀体左侧端面上的若干个导向柱、套装在导向柱上的若干个压缩弹簧、连接在阀盖左侧的螺柱以及与若干个导向柱滑动连接的压盘,导向柱与压缩弹簧一一对应,压盘上设有与导向柱一一对应的若干个导向孔,压盘上还设有与螺柱相适配的通孔,位于压盘左侧的螺柱上安装有锁紧螺母。本发明结构简单、设计合理,阀盖开合方便、密封效果好、不易失效且方便维护。(The invention discloses a kind of civil air defense constructions and installations Antiexplosive overpressure air exhaust valves, belong to civil air defense constructions and installations apparatus field, including valve body and valve deck, flange is installed on the right side of valve body, valve body is equipped with the gas vent through the left and right both ends of valve body, valve body right end face is equipped with the stepped hole with gas vent coaxial line, and the left end face of valve deck and the sealing bottom surface of stepped hole cooperate；It further include valve deck retaining mechanism, valve deck retaining mechanism includes circumferential several guide posts being evenly distributed in valve body left end face, several compressed springs being sleeved in guide post, the stud being connected on the left of valve deck and the platen being slidably connected with several guide posts, guide post and compressed spring correspond, platen is equipped with and several one-to-one pilot holes of guide post, it is additionally provided with through-hole compatible with stud on platen, locking nut is installed on the stud on the left of platen.Rationally, valve deck folding with convenience, sealing effect be good, not vulnerable and maintain easily for the configuration of the present invention is simple, design.)

1. a kind of civil air defense constructions and installations Antiexplosive overpressure air exhaust valve, it is characterised in that: including valve body and valve deck, the right side of the valve body Flange is installed, the valve body is equipped with the gas vent through the left and right both ends of valve body, and the valve body right end face is equipped with and institute The stepped hole of gas vent coaxial line is stated, the diameter of the stepped hole is greater than the diameter of the gas vent, and the diameter of the valve deck is big In the diameter of the gas vent, less than the diameter of the stepped hole, the bottom surface of the left end face of the valve deck and the stepped hole Sealing cooperation；It further include valve deck retaining mechanism, the valve deck retaining mechanism includes circumferentially being evenly distributed on the valve body left-hand end Several guide posts on face, several compressed springs being sleeved in the guide post, the spiral shell being connected on the left of the valve deck Column and the platen being slidably connected with several described guide posts, the guide post and the compressed spring correspond, described Platen be equipped with several one-to-one pilot holes of the guide post, be additionally provided on the platen and be adapted with the stud Through-hole, locking nut is installed on the stud on the left of the platen.

2. civil air defense constructions and installations Antiexplosive overpressure air exhaust valve according to claim 1, it is characterised in that: the valve deck with it is described The sealing mating surface of stepped hole is the conical surface.

3. civil air defense constructions and installations Antiexplosive overpressure air exhaust valve according to claim 2, it is characterised in that: the bottom of the stepped hole Face is equipped with sealed groove, is equipped with sealing ring in the sealed groove.

4. civil air defense constructions and installations Antiexplosive overpressure air exhaust valve according to claim 1, it is characterised in that: set in the guide post There is graduation mark.

5. civil air defense constructions and installations Antiexplosive overpressure air exhaust valve according to claim 1, it is characterised in that: installed on the platen There is driving motor, driving gear is installed on the driving motor, is equipped on the locking nut and the driving gear phase The driven gear of adaptation.

6. civil air defense constructions and installations Antiexplosive overpressure air exhaust valve according to claim 1, it is characterised in that: several described guiding Hole is circumferentially uniformly distributed centered on the through-hole.

Technical field

The present invention relates to civil air defense constructions and installations apparatus field, in particular to a kind of civil air defense constructions and installations Antiexplosive overpressure air exhaust valve.

Background technique

Antiexplosive overpressure air exhaust valve is mainly used for the exhaust outlet of civil air defense constructions and installations, is usually in close state, when needing to carry out When gas filtration ventilation, make to keep 30-50pa superpressure inside civil air defense constructions and installations, at this time work of the valve deck of Antiexplosive overpressure air exhaust valve in superpressure With lower automatic opening, to exclude the poison gas in gas defence channel, while superpressure is but also the poison gas in atmosphere cannot be introduced into people's air defense work Inside journey.

Currently, Antiexplosive overpressure air exhaust valve mainly includes valve body and the hinged valve deck of valve body and valve deck locking mechanism. When the ventilation of wartime requirement isolation type, valve deck is locked by valve deck locking mechanism, extraneous poison gas and shock wave are completely cut off with this. In well known Antiexplosive overpressure air exhaust valve, valve deck locking mechanism is made of a cam gear, the driven member and valve deck of cam Affixed integral, rotation cam can be such that driven member and valve deck is subjected to displacement together, so that valve deck is pressed together on valve body.

But existing Antiexplosive overpressure air exhaust valve, during closing lid, the pressure between cam and driven member is very big, Cam is not only caused operating difficulties but also is prone to wear cam, directly affect after cam wear by very big frictional resistance Valve deck is pressed together on the tightness on valve body.

Summary of the invention

For Antiexplosive overpressure air exhaust valve of the existing technology valve deck locking mechanism frictional force is big, asking of being prone to wear Topic, the purpose of the present invention is to provide a kind of civil air defense constructions and installations Antiexplosive overpressure air exhaust valves.

To achieve the above object, the technical solution of the present invention is as follows:

A kind of civil air defense constructions and installations Antiexplosive overpressure air exhaust valve, including valve body and valve deck are equipped with method on the right side of the valve body Orchid, the valve body are equipped with the gas vent through the left and right both ends of valve body, and the valve body right end face is equipped with and the gas vent The stepped hole of coaxial line, the diameter of the stepped hole are greater than the diameter of the gas vent, and the diameter of the valve deck is greater than the row The diameter of stomata cooperates less than the diameter of the stepped hole, the left end face of the valve deck and the sealing bottom surface of the stepped hole； Further include valve deck retaining mechanism, the valve deck retaining mechanism include it is circumferential be evenly distributed on it is several in the valve body left end face A guide post, several compressed springs being sleeved in the guide post, the stud being connected on the left of the valve deck and with institute The platen that several guide posts are slidably connected is stated, the guide post and the compressed spring correspond, and the platen is equipped with With several one-to-one pilot holes of the guide post, through-hole compatible with the stud, position are additionally provided on the platen Locking nut is installed on the stud on the left of the platen.

Preferably, the sealing mating surface of the valve deck and the stepped hole is the conical surface.

Further, the bottom surface of the stepped hole is equipped with sealed groove, is equipped with sealing ring in the sealed groove.

Further, the guide post is equipped with graduation mark.

Further, driving motor is installed on the platen, driving gear, the lock are installed on the driving motor Driven gear compatible with the driving gear is installed on tight nut.

Preferably, several described pilot holes are circumferentially uniformly distributed centered on the through-hole.

By adopting the above technical scheme, due to the setting of compressed spring, platen and stud and locking nut, so that passing through lock The rotation of tight nut, i.e., the pressure of adjustable compressed spring, and then make that there is certain mutual tightening force between platen and valve deck, So that the pressure that the air pressure of civil air defense constructions and installations side must overcome compressed spring can push valve deck open when exhaust, superpressure row is realized The purpose of gas；The setting of stepped hole realizes explosion-proof mesh so that valve deck can not be pushed into civil air defense constructions and installations side from outside by external force 's.

Detailed description of the invention

Fig. 1 is the structural diagram of the present invention.

In figure: 1- valve body, 2- valve deck, 3- flange, 4- gas vent, 5- stepped hole, 6- sealing ring, 7- guide post, 8- compression Spring, 9- stud, 10- platen, 11- pilot hole, 12- through-hole, 13- locking nut, 14- driving motor, 15- driving gear, 16- Driven gear.

Specific embodiment

Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.

As shown in Figure 1, a kind of civil air defense constructions and installations Antiexplosive overpressure air exhaust valve, including valve body 1 and valve deck 2, valve body 1 is whole to be in Cylindrical or cuboid, the present embodiment are preferably cylindrical；The right side of valve body 1 is equipped with flange 3, and valve body 1 passes through method Orchid 3 is connected on wall；

Valve body 1 is equipped with the gas vent 4 through the left and right both ends of valve body 1, and gas vent 4 is usually coaxially arranged with valve body 1； The stepped hole 5 with 4 coaxial line of gas vent is additionally provided in the right end face of valve body 1, the diameter of stepped hole 5 is greater than the straight of gas vent 4 Diameter, length need to be less than the length of valve body 1；Correspondingly, in order to keep 2 normal use of valve deck, the diameter of valve deck 2 need to be greater than row The diameter of stomata 4, the diameter that stepped hole 5 need to be less than simultaneously, and the left end face of valve deck 2 and the sealing bottom surface of stepped hole 5 are matched It closes；In the present embodiment, the sealing mating surface of valve deck 2 and stepped hole 5 is the conical surface, and the bottom surface of stepped hole 5 is equipped with sealed groove, close It seals and is equipped with sealing ring 6 in groove.

Civil air defense constructions and installations Antiexplosive overpressure air exhaust valve in the present embodiment further includes valve deck retaining mechanism, valve deck retaining mechanism Including circumferential several guide posts 7 being evenly distributed in 1 left end face of valve body, be sleeved on it is several in several guide posts 7 A compressed spring 8, the stud 9 being connected in 2 left end face of valve deck and the platen 10 being slidably connected with several guide posts 7, Guide post 7 and compressed spring 8 correspond, platen 10 be equipped with several the one-to-one pilot holes 11 of guide post 7, simultaneously The through-hole 12 passed through for stud 9 is additionally provided on platen 10, the diameter of through-hole 12 always slightly greater than the diameter of stud 9, is located at Locking nut 13 is installed on the stud 9 in 10 left side of platen.

In the present embodiment, several pilot holes 11 on platen 10 are circumferentially uniformly distributed centered on through-hole 12.

In order to allow the operator to the pressure value that more intuitive understanding is provided to holddown spring 8, guide post 7, which is equipped with, is carved Line (not shown) is spent, which is the length scale being arranged along the axial direction of guide post 7.

In the present embodiment, driving motor 14 is installed on platen 10, driving gear 15 is installed on driving motor 14, locks Driven gear 16 compatible with driving gear 15 is installed on nut 13.When need to adjust be vented outwards inside civil air defense constructions and installations when Pressure at expulsion size when exhaust (pressure threshold value), it is only necessary to control driving motor 14 and rotate forward or reversion.

In use, the position of locking nut 13 is adjusted, to adjust according to the overpressure value size needed inside civil air defense constructions and installations The decrement of whole holddown spring 8 provides elastic force by compressed holddown spring 8, is incited somebody to action by platen 10, locking nut 13, stud 9 Elastic force passes to valve deck 2, makes the pressure (being adapted with overpressure value) that valve deck 2 is certain to 5 output of stepped hole, when needing to be vented When, the pressure inside civil air defense constructions and installations is more than that overpressure value can push valve deck 2 to overcome the elastic force of holddown spring 8 and move, Make the sealing mating surface between valve deck 2 and stepped hole 5 that gap occur, and then is vented；Conversely, shock wave occurs outside civil air defense constructions and installations When, valve deck 2 can only be pressed on stepped hole 5 by shock wave, seal cooperation between valve deck 2 and stepped hole 5 at this time, and shock wave can not lead to It crosses overpressure exhaust valve to enter inside civil air defense constructions and installations, realizes explosion prevention function.

In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.