CN207687333U - A kind of Composition spacer - Google Patents

Abstract

The utility model provides a kind of Composition spacer, including：Elastomeric pad and be arranged on the elastomeric pad, the hard disk for increasing the elastomeric pad intensity.On the one hand Composition spacer provided by the utility model realizes the sealing effect to sealing device by the hard disk on elastomeric pad；On the other hand the compression strength of elastomeric pad is enhanced, when high pressure gas impacts, due to the combination of hard disk and elastomeric pad, hard disk protects elastomeric pad not to be deformed, while therefore elastomeric pad is not also damaged, service life is extended.

Description

A kind of Composition spacer

Technical field

The utility model is related to technical fields of mechanical processing, in particular to a kind of Composition spacer.

Background technology

Gasket is as the element for reinforcing mechanical seal between two objects, such as the sealing for preventing gas, liquid leakage Element is arranged between two articles static seal face.Currently, gasket in the market is mostly simple elastoplastic gasket, since it is strong Degree is weaker, when sealing element internal pressure is larger, cannot form band to band sealing element, be easy to happen leakage phenomenon, need It is further perfect.

China Patent Publication No.：102425604 A of CN, disclose a kind of Composition spacer, which includes：Including The composite material of the polymer laminate of substantially rigid base material and covering on the substrate, which, which has, is formed with out The open annular structure of seam.

In above-mentioned technical proposal, existing gasket can only often play the role of sealing, blocked in sealed tube body or The port of the other sealing structures of person prevents the inner air and outer air of sealing structure from circulating, but can not bear the impact of high pressure gas, It can not realize high pressure gas circulation controllable in the space inside and outside gasket.

Utility model content

In consideration of it, the utility model proposes a kind of Composition spacers, it is intended to which it is easy to solve existing gasket being under pressure The problem of deformation weakens sealing effect, influences service life.

The utility model proposes a kind of basin tank deck breather valves, including：Elastomeric pad and setting are in the elastomeric pad The upper, hard disk for increasing the elastomeric pad intensity.

Further, it in above-mentioned Composition spacer, is provided on the elastomeric pad and passes through the first perforation.

Further, in above-mentioned Composition spacer, the hard disk is arranged concentrically with the elastomeric pad, be provided with Corresponding second through hole of first through hole.

Further, in above-mentioned Composition spacer, the outer rim of the hard disk is coated by the outer rim of the elastomeric pad.

Further, in above-mentioned Composition spacer, the hard disk surrounds first through hole uniformly or arbitrary arrangement is set It sets on the elastomeric pad.

Further, in above-mentioned Composition spacer, the hard disk is symmetrically arranged on the elastomeric pad.

Further, in above-mentioned Composition spacer, the shape of the hard disk is circle.

Further, in above-mentioned Composition spacer, the shape of the hard disk is strip, triangle or prismatic.

Further, in above-mentioned Composition spacer, the unilateral or bilateral in the elastomeric pad is arranged in the hard disk.

Further, the hard disk is metal or rigid non-metallic material.

Compared with prior art, the beneficial effects of the utility model are, by the hard disk on elastomeric pad, on the one hand Realize the sealing effect to sealing device；On the other hand the compression strength for enhancing elastomeric pad, when high pressure gas impacts, Also not therefore due to the combination of hard disk and elastomeric pad, hard disk protects elastomeric pad not to be deformed, while elastomeric pad It damages, extends service life；Also, due to the weight of the hard disk of application be it is preset, will not be because of in cushion On piece increases hard disk and changes the approximate range of air pressure in sealing device.In particular, the hard disk of the utility model integrally covers In the one side of elastomeric pad, impact of the high pressure gas to entire elastomeric pad is uniformly born.The utility model elastomeric pad can It is used for as sealing element in the pipeline sealing of the valve seal such as chemical field, mechanical equipment.

Description of the drawings

By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to this practicality Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：

Fig. 1 is the overall structure diagram of basin tank deck breather valve embodiment provided by the utility model；

Fig. 2 is the structural schematic diagram of the Composition spacer of the utility model embodiment one；

Fig. 3 is the structural schematic diagram of the Composition spacer of the utility model embodiment two；

Fig. 4 is the structural schematic diagram of the Composition spacer of the utility model embodiment three；

Fig. 5 is the open type joint structure connecting valve schematic diagram of the utility model basin tank deck breather valve embodiment；

Fig. 6 is the embedded connecting structure schematic diagram of the utility model basin tank deck breather valve embodiment.

Specific implementation mode

Preferred embodiments of the present invention are described with reference to the accompanying drawings.It should be understood by those skilled in the art that It is that these embodiments are used only for explaining the technical principle of the utility model, it is not intended that limit the protection of the utility model Range.

It should be noted that term "upper", "lower", "left", "right", "inner", "outside" etc. in the description of the present invention, The direction of instruction or the term of position relationship are direction based on ... shown in the drawings or position relationship, this, which is intended merely to facilitate, retouches It states, rather than indicates or imply that described device or element must have a particular orientation, with specific azimuth configuration and operation, because This should not be understood as limiting the present invention.

In addition it is also necessary to explanation, in the description of the present invention, unless otherwise clearly defined and limited, art Language " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or It is integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be by between intermediary It connects connected, can be the connection inside two elements.To those skilled in the art, can understand as the case may be above-mentioned The concrete meaning of term in the present invention.

As shown in fig.1, it is the overall structure diagram of the utility model basin tank deck breather valve embodiment, basin tank Pushing up breather valve includes：Breathe cavity 1, pressure relief valve body 2, pressurising valve body 3 and limiting mechanism of pressure 4, wherein breathing cavity 1 passes through pipe Road is connected with the chamber of basin, so that basin chamber indoor gas passes in and out；Pressure relief valve body 2 is arranged on 1 top of breathing cavity And communicate therewith, being entered in pressure relief valve body 2 with will pass through the indoor high pressure gas of basin chamber, completing pressure release；Pressurising valve body 3 is arranged In the lower part of breathing cavity 1, to when ambient pressure is higher than the indoor gas of basin chamber, air enter the breathing cavity 1, And in basin chamber；The setting of limiting mechanism of pressure 4 changes the breathing valve body in 2 upside of pressure relief valve body by the limiting mechanism of pressure 4 The air pressure in cavity 1 is breathed, to reach preset air pressure threshold value, and then changes breathing cavity 1 and the indoor gas of basin chamber Pressure.The basin tank deck breather valve of the present embodiment, by being arranged in tank top, for maintaining the air pressure in basin to be set in advance In fixed range, when air pressure is higher than the range in basin, pressure relief valve body exhaust decompression；When air pressure is less than the range, inflation Valve air inlet ftercompction.

Specifically, the monnolithic case of breathing cavity 1 is cylindrical structure, it is provided with 11 He of pure air entrance on it Clean air outlet 12, wherein clean air outlet 12 are connected by pipeline with basin, and pure air is from pure air entrance 11 enter in breathing cavity 1, then are entered in basin by clean air outlet 12, to make basin obtain pure air Positive pressure protection prevents extraneous non-clean gas and microorganism from entering wherein.

Specifically, pressure relief valve body 2 includes pressure release chamber 21,21 upper and lower side of pressure release chamber is open, wherein in pressure-releasing chamber Composition spacer is arranged in 21 upper end of room comprising elastomeric pad 22, the closing of elastomeric pad 22 are connect with 21 upper end of pressure release chamber Mouthful, the First piston bar across elastomeric pad 22 is also set up on elastomeric pad 22, in the pressure release chamber 21 air pressure be less than When the second air pressure threshold value, elastic packing is formed between elastomeric pad 22 and First piston bar 23；The air pressure in the breathing cavity 1 When higher than the first air pressure threshold value, high pressure gas enters in the pressure release chamber 21, and air pressure is higher than the second gas in pressure release chamber 21 When pressing threshold value, the high pressure gas in pressure release chamber 21 is broken through the elastic packing between elastomeric pad 22 and First piston bar 23 and is arranged Go out outside pressure release chamber 21.

It is the Composition spacer of the utility model basin tank deck breather valve embodiment one, two, three refering to shown in Fig. 2-4 Structural schematic diagram is provided with hard disk 221 in the present embodiment, to enhance the strong of the elastomeric pad 22 on Composition spacer 22 It spends, prevent it from being deformed under the impact of high pressure gas, in particular, in the present embodiment, high pressure gas passes through elastomeric pad 22 and first Gap discharge between piston rod 23, under high pressure gas impact, elastomeric pad 22 is easily deformed, generates bending, passes through setting Hard disk 221 generates resistance when high pressure gas is impacted with high pressure gas, protects elastomeric pad 22, prevents its deformation.Meanwhile Hard disk 221 is provided on elastomeric pad 22, when air pressure is less than the second air pressure threshold value in the pressure release chamber 21 under normal pressure, Elastomeric pad 22 can block the upper end of pressure release chamber 21, isolation relief valve 2 and extraneous air.

It is the various structures schematic diagram of the Composition spacer of the utility model embodiment, due to elasticity in conjunction with shown in Fig. 2-4 Gasket 22 is arranged in 21 upper end of pressure release chamber, and when high pressure gas impacts, the entire side of elastomeric pad 22 can be impacted, Therefore, in Fig. 3,4, the side of elastomeric pad 22 is distributed several hard disks 221, and hard disk 221 is uniform around through hole 222 Or arbitrary arrangement is in elastomeric pad 22, hard disk 221 can it is in a strip shape or it is discoid be arranged in the side of elastomeric pad 22, pass through It squeezes or is bonded as one；Or the outer rim of hard disk 222 is coated by the outer rim of the elastomeric pad.Hard disk 221 Can be circle, bar shaped, triangle or prismatic.It will be appreciated by persons skilled in the art that hard disk 221 is logical with elastomeric pad 22 It crosses arbitrarily firm mode to be fixed as one, hard disk 221 is made of metal material or rigid composite material.As optimal reality Mode is applied, in Fig. 2, hard disk 22 is whole to be covered in the one side of elastomeric pad 22, as shown in Fig. 2, uniformly bearing high pressure gas Impact of the body to entire elastomeric pad.Certainly, hard disk 22 also can be integrally covered on two sides of elastomeric pad 22.Continue As shown in fig.2, being provided with the first through hole 222 for wearing the First piston bar 23 on elastomeric pad 22, described first lives 23 lower end of stopper rod is placed in inside the pressure release chamber 21, and upper end is placed in outside the pressure release chamber 21.As best embodiment party Formula is provided with perforation corresponding with through hole on the elastomeric pad 22 on hard disk 221, and First piston bar 23 sequentially passes through bullet Property gasket 22 and hard disk 221.It will be appreciated by persons skilled in the art that the hard disk is metal or nonmetallic hard Material only need to meet enough hardness, intensity and can be combined with elastomeric pad；The material of the elastomeric pad is common Gasket material, this is repeated no more.

Shown in Fig. 1,23 lower end of First piston bar is in pressure release chamber 21, is provided with the first spool 24；Under normal pressure, the first spool 24 is blocked in 21 lower end connector of pressure release chamber, can close 22 lower end of pressure release chamber Connector.Since breathing cavity 1 and basin are in connected state, under normal conditions, the atmospheric pressure value in tank body and breathing cavity 1 Interior atmospheric pressure value is identical.When air pressure is higher than the first air pressure threshold value first threshold in tank, the pressure-releasing chamber under the driving of high pressure gas The first spool 24 and 21 lower end connector of pressure release chamber in room 21 are detached from, to make gas enter in pressure release chamber 21, in institute When stating in pressure release chamber 21 air pressure and being higher than the second air pressure threshold value, by the way that the elastomeric pad 22 in 21 upper end of pressure release chamber is arranged and wears Gap between the First piston bar 23 being located on elastomeric pad 22 is automatically drained out to the external world.High pressure gas is connected automatically by this Continuous exhaust mode effusion, speed is relatively slower, stablizes, and can prevent outside air from entering, ensure that basin and respiratory cavity Internal cleaning health.As the air pressure in pressure release chamber 21 continuously decreases, air pressure is less than second in the pressure release chamber 21 When air pressure threshold value, the gap between elastomeric pad 22 and the First piston bar 23 being threaded through on elastomeric pad 22 is not then exhausted from gas Body, the two re-form elastic packing, and outside air is prevented to enter in pressure release chamber 21；The process is equivalent to form check valve, Only gas is allowed to be discharged into air out of pressure release chamber 21.With the effusion of high pressure gas, when atmospheric pressure value is less than the first gas in basin After pressing threshold value, the first spool 24 moves downward, and restores bonding state with the connector of 21 lower end of pressure release chamber, to which closing is let out Press the connector of 21 lower end of chamber, gas that cannot then be escaped again by pressure relief valve body 2.Meanwhile when in basin atmospheric pressure value it is extremely high When the second air pressure threshold value, pressure release can be carried out by opening the super-pressure exhaust outlet 211 being arranged on 21 side wall of pressure release chamber； Certainly, if the air pressure in pressure release chamber 21 can change in controllable range, super-pressure exhaust outlet 211 can be also not provided with.

With continued reference to Fig. 1, extra-high outlet 211, extra-high row are provided on 21 side wall of pressure release chamber The closing cap of adaptation is provided in outlet 211, it is generally the case that extra-high outlet 211 is in closed state.In high pressure When the pressure anomaly of gas is high, high pressure gas is removed to be discharged by the gap between the elastomeric pad 22 and First piston bar 23 Outside, it is also discharged by extra-high outlet 211；Alternatively, when the pressure in tank body increases suddenly, high pressure gas passes through super High pressure gas outlet 211 is discharged.Electrically-controlled valve or other valve bodies can be arranged in the outlet end of extra-high outlet 211, lead to It crosses and gas pressure threshold value is arranged to valve body, gas is discharged, or be directly open and install to extra-high outlet 211, discharge Gas.

With continued reference to Fig. 1, limiting mechanism of pressure is arranged on the upside of pressure relief valve body, for setting above-mentioned first air pressure threshold value, passes through The limiting mechanism of pressure changes the air pressure in the breathing cavity 1, includes as wherein a preferred embodiment, limiting mechanism of pressure：Connection The counterweight valve body 4 with preset weight in 2 upper end of pressure relief valve body, counterweight valve body 4 include the counterweight for adjusting counterweight valve weight Block 41 loads the cylinder body 42 of clump weight, the cylinder body lid 43 being arranged at cylinder body upper end opening, and be connected with clump weight 41 Second piston bar 26, second piston bar 26 are connected with 24 upper end of First piston bar.Therefore, the gravity of counterweight valve body 4 can lead to It crosses second piston bar 26 and First piston bar 23 acts on the first spool 24, by adjusting the gravity size of counterweight valve body 4, come The size for controlling the first air pressure threshold value, to achieve the purpose that accurately to adjust pneumatic floating range in basin.

Specifically, clump weight 41 is multiple entity circular ring structures of different-thickness, annulus endoporus can be inserted in second piston Bar 26, when installation, can select the ring body of its respective thickness to adjust valve body downlink gravity as needed；Cylinder body 42 is cylindrical structure, The upper end, which is provided with, to be open and is configured with cylinder body lid 43, the top that bottom end passes through open type joint structure connecting valve 5 and pressure relief valve body 2 It is connected；Cylinder body lid 43 is circular ring shape, and middle part is equipped with the star-like sealing ring with 26 top seal of second piston bar, main function It is positioned for clump weight 41 and second piston bar 26, so that it is not generated inclination when moving up and down, preferably set on cylinder body lid 43 It is equipped with gas vent, to make clump weight 41 and second piston bar 26 not generate air-resistance phenomenon in reciprocatory movement.

It will be appreciated by persons skilled in the art that as limiting mechanism of pressure preferred embodiment, elastic parts can be used Instead of clump weight, spring such as is set in counterweight valve body 4, the upper end closed of counterweight valve body is connect with spring, lower end setting closure Baffle, second piston bar 26 connect with the baffle of lower end, and the elastic force of spring passes through second piston bar 26 and First piston bar 23 act on the first spool 24, by the amount of force of adjustment spring, to control the size of the first air pressure threshold value, to reach To the accurate purpose for adjusting pneumatic floating range in basin.Certainly, those skilled in the art can also replace with spring controllable Pneumatic cylinder or hydraulic cylinder etc. are capable of providing the element of preset active force.

With continued reference to Fig. 1, pressurising valve body 3 includes pressurising chamber 31 and can be combined or disengaged with the pressurising chamber 31 Second spool 25, second spool 25 are opened in the preset third air pressure threshold value of 1 air pressure inside of breathing cavity, Outside air is set to enter 1 equilibrium air pressure of breathing cavity.Specifically, pressurising valve body 3 includes being connected to 1 lower end of breathing cavity Pressurising chamber 31 and the second spool 25 for being connected with the engraved structure of 31 lower end of pressurising chamber by connecting shaft 251, second Spool 25 can be combined or disengaged with pressurising chamber 31.When the air pressure in storage filling is less than third air pressure threshold value, the second spool 25 It is detached from pressurising chamber 31, the outside air by filtering is entered by pressurising chamber 31 in breathing cavity 1, and then supplements basin Interior air pressure, when the air pressure in basin restores to more than third air pressure threshold value, the second spool 25 and pressurising chamber 31 restore knot Conjunction state, outside air cannot then be entered by pressurising valve body 3 in tank body again.In the present embodiment, by pressurising valve body 3, let out The effect of pressure valve body 2 maintains the pressure in breathing cavity 1 and tank body in default range.

Dismountable opening is set shown in Fig. 1 and Fig. 5, between the limiting mechanism of pressure and the pressure relief valve body 2 The pressure relief valve body 2 is discharged by the opening on its side wall for formula joint structure connecting valve 5, the open type joint structure connecting valve 5 High pressure gas discharge into the atmosphere.Specifically, open type joint structure connecting valve 5 is connected including the first connection cover 51, second Lid 52 and connecting plate 53.Wherein, the first connection cover 51 is connected with 21 upper end of pressure release chamber, and the second connection cover 52 passes through insertion Formula bindiny mechanism 6 is connected with 412 lower end of cylinder body of counterweight valve body 41, and the setting of connecting plate 53 connects in the first connection cover 51 and second Between connecing lid 52, and opening is formed between the first connection cover 51 and the second connection cover 52, to play fixed and supporting function, Quantity is indefinite, and certainly, the shape of connecting plate 53 is not limited, in the present embodiment, be several arc panels, each arc panel it Between interval is set, by the way that spaced several arc panels are arranged, can also facilitate gripping, so that breather valve can facilitate installation And it carries.

With continued reference to Fig. 5, centrally disposed perforative first connecting hole 511 of the first connection cover 51, the second connection cover 52 Second connecting hole 521 corresponding with the first connecting hole 51 is set at center, to wear First piston bar 23 and second piston bar 26, and prevent it from deviateing during the motion.Meanwhile 511 periphery of the first connecting hole in first connection cover 51 is set It is equipped with gas vent, gas vent is also provided in the first connection cover 51 and is lived with described first the elastomeric pad 22 will be broken through Elastic packing between stopper rod 23 and the high pressure gas that is discharged outside pressure release chamber 21 are discharged into the atmosphere.In addition, open type valve body Preformed hole 531 is additionally provided in connection structure 5, for being worn used in tool when installation or removal.The utility model embodiment passes through Split type, removable limiting mechanism of pressure, pressure relief valve body 2, open type joint structure connecting valve 5 are set, manufacture, each mechanism point are facilitated It is i.e. not plastic by casting and machining, compared to the casting of monoblock type, save activity time；Also, each mechanism can be with Dismounting is replaced, convenient to be overhauled to each mechanism, in particular, can be to the elastomeric pad and limiting mechanism of pressure in pressure relief valve body 2 Interior counterweight valve body or spring assembly are replaced, to adapt to different application environments；Meanwhile by the way that spaced company is arranged Fishplate bar makes to communicate with air on the inside of bindiny mechanism, and 511 periphery of through hole in the first connection cover is provided with gas vent, in pressure release It, can be big with the external world when the indoor high pressure gas of chamber breaks through the elastic packing between the elastomeric pad and the First piston bar Gas phase is same.

As shown in fig.6, the second connection cover 52 of open type joint structure connecting valve 5 passes through embedded bindiny mechanism 6 and institute It states 412 lower end of cylinder body to be connected, embedded bindiny mechanism 6 includes the first groove 54, the second groove 55 and locating part 56, wherein The setting of first groove 54 in 52 side-wall outer side of the second connection cover, the second groove 55 is arranged on 412 lower end inner wall of the cylinder body, with First groove 54 corresponds to, and locating part 56 is fastened on simultaneously in the first groove 54 and the second groove 55, to limit counterweight valve Body 41 and the movement of open type joint structure connecting valve 5 in the axial direction.

Specifically, locating part 56 its can select wire, preferably one end carries the wire of hook；Meanwhile second The entrance hole 551 of 412 side wall of cylinder body is provided through in groove 55, to import or export described first by the locating part 56 Groove 54 and the second groove 55.When mounted, the second connection cover 52 is made to be combined with cylinder body 412, the first groove 54 and the second groove 55 alignment, by one end of locating part 56 by entrance hole 551, and are fixed on the first groove 54, by rotating round about Cylinder body 412 and opening bindiny mechanism 5, make the free end of the locating part 56 slowly enter the first groove 54 and the second groove 55, And make locating part 56 while being fastened in the first groove 54 and the second groove 55, realize locking；In dismounting, revolve round about Turn cylinder body 412 and opening bindiny mechanism 5, so that the free end of locating part 56 is exposed, and free end is clamped, continuation is revolved round about Turn cylinder body 412 and opening bindiny mechanism 5, makes locating part 56 slowly the first groove 54 of export and the second groove 55, until locating part 56 completely disengage the first groove 54 and the second groove 55, and the second connection cover 52 is made to be detached from cylinder body 412.

As preferred embodiment, in order to which locating part 56 is fixed on the first groove 54 in installation and dismounting, Location hole 541 is provided in first groove 54, wire of the locating part selection with crotch passes through 56 hook end of locating part Entrance hole 551 be fixed to location hole 541 in realize fix, by rotary cylinder-block 412 round about and opening bindiny mechanism 5, Make into and out first groove, 54 and second groove 55 in free one end of the locating part 56, has reached installation and removal mesh 's.

Liang Ge mechanisms are installed compared to clamping hoop type bindiny mechanism by the embedded bindiny mechanism 6 of the utility model, have more The stability added, clamping hoop type bindiny mechanism pass through screw-driving, reality by the way that annular fixing member is arranged in the outside of Liang Ge mechanisms It now fixes, by the shear strength of the cladding shoulder side wall of the locking and annular fixing member of bolt structure；And the utility model is logical It crosses on inside and lateral surface in two mechanisms being combined and groove is set, and between being fastened on two mechanisms by locating part, pass through Radial pressure between locating part and recess sidewall is contended with the axial tensions of two mechanisms, than having stronger work using clamp mechanism Use effect；Meanwhile compared to the structure of welding manner post-failure behaviors, the utility model mounting means can be dismantled, conveniently to machine Structure in structure is operated and is replaced, and installation and dismounting can be realized in the rotation that only need to two mechanisms be carried out with opposite direction；And And the connection type is arranged in the inside of two mechanisms, is not take up mechanism exterior space, the operation convenience with bigger；Pass through Setting entrance hole facilitates locating part to pass in and out groove, easy for installation laborsaving.

Further include filter mechanism 7 in basin tank deck breather valve provided in this embodiment with continued reference to Fig. 1, is arranged in pressurising The lower end of valve body 3 includes mainly shielding for filtering the filter screen 71 of natural air and being arranged on the outside of filter screen Shell 72.A plurality of long pore structure is wherein offered on shell 72 side by side, filter screen 71 is arranged in a manner of liner in shell 72 It is internal.

Further include wiper mechanism 8 comprising setting exists the present embodiment provides in basin tank deck breather valve with continued reference to Fig. 1 The cleaning solution import 81 on 1 outer wall of cavity is breathed, setting is on breathing 1 inner wall of cavity, cleaning corresponding with cleaning solution import 81 Spray the cleaning solution recovery approach on the inside of ball 82 and shell.

In conclusion the basin tank deck breather valve of the utility model is by being arranged pressure relief valve body, in pressure relief valve body setting with Atmospheric pressure value in pressure relief valve body and the elastomeric pad and piston rod for changing marriage relation, in the pressure-releasing chamber room pressure less than the When two air pressure threshold values, elastic packing is formed between elastomeric pad and First piston bar；In the pressure-releasing chamber room pressure higher than the Enough gaps are generated when two air pressure threshold values, between elastomeric pad and First piston bar, the indoor high pressure gas of pressure-releasing chamber breaks through bullet Elastic packing between property gasket and First piston bar and be discharged outside pressure-releasing chamber room.Compared to by being arranged in pressure relief valve body side wall On high pressure gas outlet, the utility model on the one hand can prevent under high pressure conditions open high pressure gas outlet pressure release and cause Ambient atmosphere is poured in down a chimney, and pollutes the substance in basin, no matter high pressure gas outlet is higher than certain item in normally open or in air pressure The state opened under part unavoidably pollutes tank body substance, influences material purity in basin, and the utility model passes through setting The elastomeric pad and piston rod that marriage relation changes with air pressure are realized the indoor gas unidirectional discharge of pressure-releasing chamber, are absolutely avoided outer The reversed inflow of boundary's air；On the other hand, by avoiding that high pressure gas outlet is arranged in pressure relief valve body lateral wall or reducing high Gas vent frequency of use is pressed, avoids causing rigid damage to valve body structure；Meanwhile when air pressure is micro- high in basin, realize certainly It is dynamic to adjust atmospheric pressure value in storage filling, equilibrium state is reached, the break-make exported to high pressure gas is avoided to operate, in certain journey Labor intensity has been saved on degree, has been improved work efficiency.

So far, it has been combined preferred embodiment shown in the drawings and describes the technical solution of the utility model, still, this Field technology personnel are it is easily understood that the scope of protection of the utility model is expressly not limited to these specific implementation modes. Under the premise of the principles of the present invention, those skilled in the art can make the relevant technologies feature equivalent change Or replace, the technical solution after these changes or replacement is fallen within the scope of protection of the utility model.

Claims (9)

1. a kind of Composition spacer, which is characterized in that including：Elastomeric pad（22）And hard disk（221）；Wherein, the cushion Piece（22）On be provided with the first through hole（222）；The hard disk（221）It is arranged in the elastomeric pad（22）On, for increasing Add the elastomeric pad（22）Intensity.

2. Composition spacer according to claim 1, which is characterized in that the hard disk（221）With the elastomeric pad （22）It is arranged concentrically, is provided with and first through hole（222）Corresponding second through hole.

3. Composition spacer according to claim 2, which is characterized in that the hard disk（221）Outer rim pass through the bullet Property gasket（22）Outer rim cladding.

4. Composition spacer according to claim 1, which is characterized in that the hard disk（221）Run through around described first Hole（222）Uniformly or arbitrary arrangement is arranged in the elastomeric pad（22）On.

5. Composition spacer according to claim 4, which is characterized in that the hard disk（221）It is symmetrical to be arranged described Elastomeric pad（22）On.

6. Composition spacer according to claim 1 or 4, which is characterized in that the hard disk（221）Shape be circle.

7. Composition spacer according to claim 4 or 5, which is characterized in that the hard disk（221）Shape be strip Shape, triangle or prismatic.

8. according to the Composition spacer described in claim 1-5 any one, which is characterized in that the hard disk（221）Setting exists The elastomeric pad（22）Unilateral or bilateral.

9. according to the Composition spacer described in claim 1-5 any one, which is characterized in that the hard disk（221）For metal Or rigid non-metallic material.