CN208703214U - Wall-hung boiler safety valve - Google Patents

Abstract

The utility model provides wall-hung boiler safety valve, belongs to safety valve field.Wall-hung boiler safety valve, including valve body, connect cap, nut cap and resetting-mechanism, there is the inlet and outlet communicated on valve body, cap is connect to be connected with valve body, resetting-mechanism includes connecting rod, seal receptacle and reset spring, and seal receptacle seals import, and the inner end of connecting rod is connected with seal receptacle, reset spring is set in connecting rod, and the outer end of connecting rod is connected with nut cap；Wherein, when seal receptacle is upwardly separated from import, connecting rod is also moved upwards, and reset spring makes seal receptacle have the trend resetted in compressed configuration at this time；Wherein, nut cap and connect between cap have drive mechanism, manually rotate nut cap when, by drive mechanism, seal receptacle can be upwardly separated from import.The case where intrinsic safety full valve realizes pressure non-regulated formula structure, realizes dual-mode functions, is not in adjustment structure failure, stability is strong.

Description

Wall-hung boiler safety valve

Technical field

The utility model belongs to safety valve field, is related to wall-hung boiler safety valve.

Background technique

Wall-hung boiler safety valve is suitable for burnt gas wall hanging furnace, electric wall-hung boiler, electric heater and air energy water heater, has simultaneously Check-valves and relief valve function can prevent the aqueous reflux into pipeline, and when wall-hung boiler discharge pressure is higher, it is extra to drain Pressure.And existing safety valve is easy occur adjusting nut loosening in actual use there are external pressure adjustable structure Situation causes safe valve regulation pressure failure, and above-mentioned adjustable safety valve can not carry out manual pressure discharge operations at present, so The applicant designs a new non-regulated formula double mode wall-hung boiler safety valve, to meet the needs of existing market.

Summary of the invention

The purpose of this utility model is to provide wall-hung boiler safety valve for the above-mentioned problems in the prior art, this The case where wall-hung boiler safety valve realizes pressure non-regulated formula structure, realizes dual-mode functions, is not in adjustment structure failure, surely It is qualitative strong, solve the problems such as current adjustable safety valve pressure adjusting function is easy to appear failure, can not be operated manually.

The purpose of this utility model can be realized by the following technical scheme: wall-hung boiler safety valve, including valve body, connect cap, Nut cap and resetting-mechanism have the inlet and outlet communicated on the valve body, and the cap that connects is connected with the valve body, and feature exists In: the resetting-mechanism includes connecting rod, seal receptacle and reset spring, and the seal receptacle seals the import, the connection The inner end of bar is connected with the seal receptacle, and the reset spring is set in the connecting rod, and the outer end of the connecting rod is connected with The nut cap；

Wherein, when the seal receptacle is upwardly separated from the import, the connecting rod is also moved upwards, at this time reset spring Make the seal receptacle that there is the trend resetted in compressed configuration；

Wherein, it the nut cap and connects there is drive mechanism between cap, when rotating the nut cap manually, by drive mechanism, The seal receptacle can be upwardly separated from the import.

Intrinsic safety full valve is specific as follows: import on valve body is inlet or air inlet, exports as liquid outlet or gas outlet, connects Cap is substantially a part of valve body, is only separate structure by valve design, convenient for the installation of resetting-mechanism.Intrinsic safety full valve tool There are two types of use pattern, the first is releasing pressure automatically mode first, pressure medium in the duct within a predetermined range when, reset Mechanism is normal condition, and seal receptacle fits closely import and seals import at this time.When pressure medium is excessive, pressure is higher than setting value When, medium, which can open seal receptacle, communicates inlet and outlet realization, to realize decompression function, after pressure is normal, is being pressed The action of reset spring bottom sealing socket of contracting reseals import.Second is manual relief mode, and there are two under this kind of mode Kind situation, the first situation are temporarily to carry out pressure release to pipeline, meet terminal pressure demand, second situation is that intrinsic safety full valve is long Not working long causes seal receptacle and import joint place to stick together phenomenon, and seal receptacle is caused not transported under default vent pressure It is dynamic.In both cases, the mode that can take manual pressure release rotates nut cap, under the action of the transmission structure when specific operation Seal receptacle is set to be detached from import, to realize pressure discharge operations.Intrinsic safety full valve is combined by double mode, realizes that automatically and manually pressure release is grasped Make, is suitable for level pressure pipe-line system.

In above-mentioned wall-hung boiler safety valve, to be tightly connected, the both ends for connecing cap are equal for the connection for connecing cap and valve body For opening and lower end outer wall has external screw thread, and there is the body top rounded and inner wall to have internal thread installing port, institute It states and connects the lower end outer wall of cap and be threaded on the installing port inner wall, described connect has sealing ring between cap and the valve body.

It connects cap and valve body is connected through a screw thread realization connection, sealing ring guarantees to connect the leakproofness between cap and valve body.

It is described with the sealing table top in circular ring shape below installing port on the valve body in above-mentioned wall-hung boiler safety valve Card slot one annular in shape is offered on sealing table top, card slot two annular in shape is offered on the lower end surface for connecing cap, The sealing ring is stuck on the card slot one and card slot two.

Realize that the card of sealing ring sets installation by card slot one and card slot two.

In above-mentioned wall-hung boiler safety valve, described connect has cylindrical sleeve part inside cap, outside the connecting rod End is pierced by the sleeve part.

In above-mentioned wall-hung boiler safety valve, the top of the reset spring withstands on the sleeve part top and realizes limit.

There are two the effects of sleeve part, and first effect is to play guiding role to connecting rod, and connecting rod is made to move up and down Steadily, second effect, which is to provide position, makes reset spring upper end carry out being arranged limit.Sleeved part is along the section of its axis direction For a pair of symmetrically arranged L shape, the sleeved part of this kind of shape makes the upper end of reset spring can be realized press limit.

In above-mentioned wall-hung boiler safety valve, the inner end outer wall of the connecting rod integrally formed with limiting section annular in shape, The seal receptacle is cylindrical and bottom is closing, and the connecting rod inner end is located in the seal receptacle, the limiting section and institute Seal receptacle is stated mutually to block.

In above-mentioned wall-hung boiler safety valve, caulking groove annular in shape, the limiting section are offered on the seal receptacle inner wall Outer is embedded in the caulking groove.

Limiting section is stuck in caulking groove, and seal receptacle is enable directly to drive connecting rod or connecting rod to move upwards when moving upwards When be able to drive seal receptacle, there is boss annular in shape, having on the outer wall of limiting section is in annulus on the inner wall of caulking groove The depressed area of shape, boss match with depressed area, increase seal receptacle and connecting rod bonding strength, reduce disengaging May, seal receptacle is made of rubber, and connecting rod is made of plastics.

In above-mentioned wall-hung boiler safety valve, the bottom center of the seal receptacle has buffer part spherical in shape, described close Offer rounded close-fitting slot with the buffer part corresponding position in envelope seat inner bottom wall, the inner end end one of the connecting rod at Type has cylindrical close-fitting head, and the close-fitting head is a tight fit in the close-fitting slot.

The join domain at one that kept seal receptacle and connecting rod more after close-fitting slot and the cooperation of close-fitting head, can enhance seal receptacle and Bonding strength between connecting rod.The effect of buffer part is can to reduce the big medium of pressure to cause compared with favourable opposition seal receptacle bottom surface It hits, seal receptacle bottom surface is caused to be damaged, there is certain buffer function.

In above-mentioned wall-hung boiler safety valve, the drive mechanism connects the ring-shaped distributed ring-type in cap upper end end including described The built-in slot annular in shape opened up on wedge-shaped part and the nut cap lower end surface, the ring-type wedge-shaped part are inserted into the built-in slot It is interior, several pieces of convex blocks are arranged at intervals in the built-in groove bottom, the convex block can move on the ring-like wedge-portion to be made The nut cap moves up and down.

When can be manually rotated nut cap, convex block can do lasting circular motion on ring-like wedge-portion, occur nut cap on one Persistent movement once, when low spot traveling lofty perch of the convex block from ring-like wedge-portion, connecting rod is moved upwards at this time, thus will Manual pressure release is realized in seal receptacle pull-up, and then convex block falls to the low spot of next wedge-shaped segment from high point, continues to complete low spot to height The movement of point.

In above-mentioned wall-hung boiler safety valve, the nut cap both ends are perforation and intracavity bottom forms card edge annular in shape, Inner cavity top is combined with capping, and the outside end of the connecting rod protrudes into the nut cap, and the lid is located in the connecting rod Outer wall in cap offers ring recess annular in shape, and card has retainer ring on the ring recess, and the retainer ring is resisted against the card edge Upper surface.

When releasing pressure automatically, seal receptacle, connecting rod and retainer ring jack up upwards.When for manual pressure release, after rotating nut cap, by It can be moved upwards under the action of the transmission structure in nut cap, card is moved upwards along drive retainer ring, connecting rod and seal receptacle at this time.Capping Be in order to which the only exposed influence of setting up defences of the interior chamber lid of nut cap is beautiful.

The prior art is compared, this wall-hung boiler safety valve has the advantage that

1, the case where this wall-hung boiler safety valve is designed by pressure non-regulated formula structure, is not in adjustment structure failure, High safety.

2, this wall-hung boiler safety valve is designed by dual-mode structure, can be realized releasing pressure automatically and manual pressure discharge operations, is tied Structure is ingenious in design.

3, this wall-hung boiler safety valve circumferentially rotates structure design by ring wedge, and pressure release behaviour can be controlled by circumferentially rotating Make.

Detailed description of the invention

Fig. 1 is the structure sectional view of this wall-hung boiler safety valve.

Fig. 2 is the structure sectional view that cap is connect in this wall-hung boiler safety valve.

Fig. 3 is the structural schematic diagram that cap is connect in this wall-hung boiler safety valve.

Fig. 4 is the enlarged drawing of a-quadrant in Fig. 1.

Fig. 5 is partial region structural schematic diagram in Fig. 1.

Fig. 6 is the enlarged drawing of B area in Fig. 1.

Fig. 7 is the structural schematic diagram of retainer ring in this wall-hung boiler safety valve.

Fig. 8 is the bottom substance schematic diagram of nut cap in this wall-hung boiler safety valve.

List of numerals

In figure, 1, valve body；

1a, import；

1b, outlet；

1c, installing port；

1d, sealing table top；

1d1, card slot one；

2, cap is connect；

2a, card slot two；

2b, sleeve part；

2c, cyclic annular wedge-shaped part；

3, nut cap；

3a, built-in slot；

3a1, convex block；

3b, card edge；

4, connecting rod；

4a, limiting section；

4b, close-fitting head；

4c, ring recess；

5, seal receptacle；

5a, caulking groove；

5b, buffer part；

5c, close-fitting slot；

6, reset spring；

7, sealing ring；

8, it covers；

9, retainer ring.

Specific embodiment

As shown in Figures 1 to 8, this wall-hung boiler safety valve includes valve body 1, connects cap 2, nut cap 3 and resetting-mechanism, on valve body 1 It with the import 1a and outlet 1b communicated, connects cap 2 and is connected with valve body 1, resetting-mechanism includes connecting rod 4, seal receptacle 5 and reset bullet Spring 6, seal receptacle 5 seal import 1a, and the inner end of connecting rod 4 is connected with seal receptacle 5, and reset spring 6 is set in connecting rod 4, The outer end of connecting rod 4 is connected with nut cap 3；

Wherein, as shown in Figure 1, Figure 4 and Figure 5, the connection of cap 2 and valve body 1 is connect to be tightly connected, and the both ends for connecing cap 2 are Opening and lower end outer wall have external screw thread, at the top of valve body 1 there is rounded and inner wall to have internal thread installing port 1c, connect cap 2 Lower end outer wall be threaded on installing port 1c inner wall, connect between cap 2 and valve body 1 have sealing ring 7.It connects cap 2 and valve body 1 is logical It crosses threaded connection and realizes connection, sealing ring 7 guarantees to connect the leakproofness between cap 2 and valve body 1, tool below installing port 1c on valve body 1 There is the sealing table top 1d in circular ring shape, seals and offer one 1d1 of card slot annular in shape on table top 1d, connect the lower end surface of cap 2 On offer two 2a of card slot annular in shape, sealing ring 7 is stuck on two 2a of one 1d1 of card slot and card slot.Pass through one 1d1 of card slot and card Two 2a of slot realizes that the card of sealing ring 7 sets installation；

Wherein, as shown in Fig. 2, Fig. 3 and Fig. 8, nut cap 3 and connect between cap 2 have drive mechanism, drive mechanism include connect cap The built-in slot 3a annular in shape opened up on 2 upper ends end, 3 lower end surface ring-shaped distributed ring-type wedge-shaped part 2c and nut cap, it is cyclic annular Wedge-shaped part 2c is inserted into built-in slot 3a, several pieces of convex block 3a1 is arranged at intervals on the bottom surface built-in slot 3a, convex block 3a1 can be in ring Movement makes nut cap 3 move up and down on shape wedge-shaped part.When can be manually rotated nut cap 3, convex block 3a1 can continue on ring-like wedge-portion Circular motion, so that nut cap 3 persistent movement one on the other is occurred, when convex block 3a1 advance from the low spot of ring-like wedge-portion it is supreme When point, connecting rod 4 is moved upwards at this time, so that manual pressure release is realized in 5 pull-up of seal receptacle, then convex block 3a1 is fallen from high point To the low spot of next wedge-shaped segment, the movement of low spot to high point is continued to complete.

Wherein, as shown in Fig. 1, Fig. 6 and Fig. 7,3 both ends of nut cap are perforation and intracavity bottom forms card edge annular in shape 3b, inner cavity top are combined with capping 8, and the outside end of connecting rod 4 protrudes into nut cap 3, and the portion in nut cap 3 is located in connecting rod 4 Exceptionally wall offers ring recess 4c annular in shape, and card has retainer ring 9 on ring recess 4c, and retainer ring 9 is resisted against card along the upper surface 3b.When automatic When pressure release, seal receptacle 5, connecting rod 4 and retainer ring 9 jack up upwards.When for manual pressure release, after rotating nut cap 3, since nut cap 3 exists It can be moved upwards under drive mechanism effect, block drive retainer ring 9, connecting rod 4 and seal receptacle 5 to move upwards along 3b at this time.Capping 8 It is in order to which the only exposed influence of setting up defences of the interior chamber lid of nut cap 3 is beautiful.

Wherein, as depicted in figs. 1 and 2, connecing has cylindrical sleeve part 2b inside cap 2, the outer end of connecting rod 4 is pierced by Sleeve part 2b.The top of reset spring 6 withstands on the top sleeve part 2b and realizes limit.There are two the effects of sleeve part 2b, and first Effect is to play guiding role to connecting rod 4, and connecting rod 4 is made to move up and down steadily, and second effect, which is to provide position, to be made to reset 6 upper end of spring carries out being arranged limit.Sleeved part is a pair of symmetrically arranged L shape along the section of its axis direction, this kind of shape Sleeved part makes the upper end of reset spring 6 can be realized press limit.

Wherein, as shown in Figure 1 and Figure 5, the inner end outer wall of connecting rod 4 is close integrally formed with limiting section 4a annular in shape Envelope seat 5 is cylindrical and bottom is closing, and 4 inner end of connecting rod is located in seal receptacle 5, limiting section 4a and 5 phase card of seal receptacle.Sealing Caulking groove 5a annular in shape is offered on 5 inner walls of seat, the outer limiting section 4a is embedded in caulking groove 5a.Limiting section 4a is stuck in caulking groove 5a It is interior, enable seal receptacle 5 that connecting rod 4 or connecting rod 4 directly to be driven to be able to drive seal receptacle 5 when moving upwards when moving upwards, There is boss annular in shape on the inner wall of caulking groove 5a, there is depressed area annular in shape on the outer wall of limiting section 4a, Boss matches with depressed area, increases seal receptacle 5 and 4 bonding strength of connecting rod, reduces the possibility of disengaging, seal receptacle 5 are made of rubber, and connecting rod 4 is made of plastics.

Wherein, as shown in Figure 1 and Figure 5, the bottom center of seal receptacle 5 has buffer part 5b spherical in shape, in seal receptacle 5 Rounded close-fitting slot 5c is offered on bottom wall with the corresponding position buffer part 5b, the inner end end of connecting rod 4 is integrally formed in circle Columnar close-fitting head 4b, close-fitting head 4b are a tight fit in close-fitting slot 5c.Make 5 He of seal receptacle after close-fitting slot 5c and close-fitting head 4b cooperation Join domain at connecting rod more than 4 one, can enhance the bonding strength between seal receptacle 5 and connecting rod 4.The effect of buffer part 5b It is that can reduce the big medium of pressure to cause greater impact to 5 bottom surface of seal receptacle, 5 bottom surface of seal receptacle is caused to be damaged, has certain Buffer function.

Intrinsic safety full valve is specific as follows: the import 1a on valve body 1 is inlet or air inlet, and outlet 1b is liquid outlet or outlet Mouthful, connecing cap 2 substantially is a part of valve body 1, valve body 1 is only designed as separate structure, convenient for the installation of resetting-mechanism.This There are two types of use patterns for safety valve tool, the first is releasing pressure automatically mode first, and pressure medium in the duct is in preset range When interior, resetting-mechanism is normal condition, and seal receptacle 5 fits closely import 1a and seals import 1a at this time.When pressure medium is excessive, When pressure is higher than setting value, medium, which can open seal receptacle 5, communicates import 1a and outlet 1b realization, thus realize decompression function, After pressure is normal, import 1a is resealed in compressed reset spring 6 effect bottom sealing socket 5.Second is manual pressure release Mode, there are two kinds of situations under this kind of mode, the first situation is temporarily to carry out pressure release to pipeline, meets terminal pressure need It asks, second situation is that intrinsic safety full valve does not work seal receptacle 5 and the joint place import 1a is caused to stick together phenomenon for a long time, is caused close Envelope seat 5 does not move under default vent pressure.In both cases, the mode of manual pressure release can be taken, it is specific to grasp Nut cap 3 is rotated when making, and so that seal receptacle 5 is detached from import 1a under the action of the transmission structure, to realize pressure discharge operations.Intrinsic safety full valve is logical Double mode combination is crossed, realizes automatically and manually pressure discharge operations, is suitable for level pressure pipe-line system.

Unmentioned detailed structure in present specification, specific part dimension and principle be conventionally known common sense or What those skilled in the art can be derived that by simple selection, it does not repeat them here.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (10)

1. wall-hung boiler safety valve, including valve body, cap, nut cap and resetting-mechanism are connect, there is the import communicated on the valve body and go out Mouthful, the cap that connects is connected with the valve body, it is characterised in that: and the resetting-mechanism includes connecting rod, seal receptacle and reset spring, The seal receptacle seals the import, and the inner end of the connecting rod is connected with the seal receptacle, and the reset spring is set in In the connecting rod, the outer end of the connecting rod is connected with the nut cap；

Wherein, when the seal receptacle is upwardly separated from the import, the connecting rod is also moved upwards, and reset spring is in pressure at this time Contracting form makes the seal receptacle have the trend resetted；

Wherein, the nut cap and connect between cap have drive mechanism, it is described by drive mechanism when rotating the nut cap manually Seal receptacle can be upwardly separated from the import.

2. wall-hung boiler safety valve according to claim 1, which is characterized in that the connection for connecing cap and valve body connects for sealing It connects, the both ends for connecing cap are opening and lower end outer wall has external screw thread, and there is the body top rounded and inner wall to have Internal thread installing port, the lower end outer wall for connecing cap are threaded on the installing port inner wall, the cap and described of connecing There is sealing ring between valve body.

3. wall-hung boiler safety valve according to claim 2, which is characterized in that have below installing port in circle on the valve body The sealing table top of annular offers card slot one annular in shape on the sealing table top, opens up on the lower end surface for connecing cap There is card slot two annular in shape, the sealing ring is stuck on the card slot one and card slot two.

4. according to right want 1 described in wall-hung boiler safety valve, which is characterized in that described connect has cylindrical sleeve inside cap Portion, the outer end of the connecting rod are pierced by the sleeve part.

5. wall-hung boiler safety valve according to claim 4, which is characterized in that the top of the reset spring withstands on the set Realize limit in canister portion top.

6. wall-hung boiler safety valve according to claim 1, which is characterized in that the inner end outer wall of the connecting rod is integrally formed There is limiting section annular in shape, the seal receptacle is cylindrical and bottom is closing, and the connecting rod inner end is located at the sealing In seat, the limiting section mutually blocks with the seal receptacle.

7. wall-hung boiler safety valve according to claim 6, which is characterized in that offer on the seal receptacle inner wall in annulus The caulking groove of shape, the limiting section outer are embedded in the caulking groove.

8. wall-hung boiler safety valve according to claim 1, which is characterized in that the bottom center of the seal receptacle, which has, is in Spherical buffer part offers rounded close-fitting slot, the company with the buffer part corresponding position in the seal receptacle inner bottom wall The inner end end of extension bar is a tight fit in the close-fitting slot integrally formed with cylindrical close-fitting head, the close-fitting head.

9. wall-hung boiler safety valve according to claim 1, which is characterized in that the drive mechanism connects cap upper end including described The built-in slot annular in shape opened up on the ring-shaped distributed cyclic annular wedge-shaped part in end and the nut cap lower end surface, the ring-type wedge Shape portion is inserted into the built-in slot, is arranged at intervals with several pieces of convex blocks in the built-in groove bottom, the convex block can be described Movement makes the nut cap move up and down on ring-like wedge-portion.

10. wall-hung boiler safety valve according to claim 1, which is characterized in that the nut cap both ends are perforation and interior bottom of chamber Portion forms card edge annular in shape, and inner cavity top is combined with capping, and the outside end of the connecting rod protrudes into the nut cap, institute It states the outer wall being located in the nut cap in connecting rod and offers ring recess annular in shape, card has retainer ring on the ring recess, institute It states retainer ring and is resisted against the card along upper surface.