CN208886005U - A kind of safety relief holding valve - Google Patents

Abstract

The utility model discloses a kind of safety relief holding valves, including right connector sleeve, valve body is fixedly connected on the left of the right connector sleeve, the valve body upper center is fixedly installed with valve seat, the valve seat processing sets up has the first pressure releasing passages, second pressure releasing passages and third pressure releasing passages, first pressure releasing passages are located at the bottom of valve seat, the third pressure releasing passages are located at valve seat upper end, first pressure releasing passages are connected to third pressure releasing passages by the second pressure releasing passages, the valve seat lower end is fixedly installed with the first spring, the first spring right end is welded in the first valve block below the first pressure releasing passages, the valve seat upper end is installed by welding with second spring, the valve seat is flexibly connected with the second valve block by second spring, the valve seat upper seal is bonded with gate valve.The safety relief holding valve, can make a part of water flow into valve seat, be reduced hydraulic pressure, can also pass water through the effect of conduit and check valve, flow back into the water route of pipeline.

Description

A kind of safety relief holding valve

Technical field

The utility model belongs to pressure release holding valve relevant device technical field, and in particular to a kind of safety relief holding valve.

Background technique

Pressure release holding valve is mainly used in fire-fighting or other water systems, to prevent locking system superpressure or maintains fire fighting supply system The pressure of system.Fire pump can be with characteristic after closing, and the suspended particulate for keeping specific gravity larger and being relatively large in diameter will not enter control system System, it is ensured that system circulation is unblocked, and valve is enable safely and reliably to run.System acting is steady, intensity is high, service life It is long.Suitable for 600 bores pipeline below.Irrigation control valve is exactly the valve of hydraulic pressure control, and hydraulic control valve is by a main valve And its composition such as conduit, pilot valve, needle-valve, ball valve and pressure gauge set up.According to using purpose, function and the difference in place that can drill Become remote control float valve, pressure reducing valve, Slow Close Valve, flow control valve, relief valve, waterpower motor-operated control valve, control valve for water pump Deng.In order to make water system preferably work, the performance for improving pressure release holding valve merits attention, current safety relief holding valve It also needs to improve, the work for how realizing that pressure is held in pressure release has the space improved.

Now be sought after a kind of safety relief holding valve, can use the first valve block and the second valve block, come control water energy it is no into Enter the second pressure releasing passages, to realize pressure release and hold the purpose of pressure.

Utility model content

It is mentioned above in the background art to solve the purpose of this utility model is to provide a kind of safety relief holding valve Problem.

To achieve the above object, the utility model provides the following technical solutions: a kind of safety relief holding valve, including right company Female connector, the right connector sleeve left side are fixedly connected with valve body, and the valve body upper center is fixedly installed with valve seat, and the valve seat adds Work is provided with the first pressure releasing passages, the second pressure releasing passages and third pressure releasing passages, and first pressure releasing passages are located at the bottom of valve seat, and described Three pressure releasing passages are located at valve seat upper end, and first pressure releasing passages are connected to third pressure releasing passages by the second pressure releasing passages, under the valve seat End is fixedly installed with the first spring, and the first spring right end is welded in the first valve block below the first pressure releasing passages, institute It states valve seat upper end and is installed by welding with second spring, the second valve block below the valve seat and second spring passes through second spring activity Connection, the valve seat upper seal are bonded with gate valve, and conduit is installed by welding on the left of the valve seat, sealing peace in the middle part of the conduit Equipped with check valve, the conduit lower end is welded on the pipeline connected with conduit, is fixedly connected with left connection on the left of the pipeline Set.

Preferably, the first valve block processing sets up is fluted.

Preferably, the second valve block processing sets up has slope surface.

Preferably, the gate valve is manual knife gate valve.

Preferably, the conduit is steel pipe.

The technical effect and advantage of the utility model: the safety relief holding valve, by being provided with the first valve block and first Spring, when hydraulic pressure is excessive, water will push the first valve block and move to left, and connect the intracorporal chamber of valve and the first pressure releasing passages, leading to reduces It crosses and is provided with the second valve block and second spring, when hydraulic pressure continues to increase, the second valve block compresses second spring movement, can make second Pressure releasing passages and body cavity are connected, and by being provided with conduit and check valve, can make to flow into the first pressure releasing passages and the second pressure release arrives Water is flow back into water route；The safety relief holding valve, can make a part of water flow into valve seat, be reduced hydraulic pressure, can also make Water passes through the effect of conduit and check valve, flow back into the water route of pipeline.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the first valve block concrete structure schematic diagram in Fig. 1；

Fig. 3 is the second valve block concrete structure schematic diagram in Fig. 1.

In figure: 1 right connector sleeve, 2 valve bodies, 3 valve seats, 31 first pressure releasing passages, 32 second pressure releasing passages, 33 third pressure releasing passages, 4 One spring, 5 first valve blocks, 6 second springs, 7 second valve blocks, 8 gate valves, 9 conduits, 10 check valves, 11 pipelines, 12 left connector sleeves.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, Fig. 1 is the structural schematic diagram of the utility model, a kind of safety relief holding valve, including right connector sleeve 1, valve body 2 is fixedly connected on the left of the right connector sleeve 1, and 2 upper center of valve body is fixedly installed with valve seat 3, the valve seat 3 Processing sets up has the first pressure releasing passages 31, the second pressure releasing passages 32 and third pressure releasing passages 33, and first pressure releasing passages 31 are located at valve seat 3 Bottom, the third pressure releasing passages 33 are located at 3 upper end of valve seat, and first pressure releasing passages 31 pass through the second pressure release with third pressure releasing passages 33 Road 32 is connected to, and 3 lower end of valve seat is fixedly installed with the first spring 4, and 4 right end of the first spring is welded on positioned at the first pressure release In first valve block 5 of 31 lower section of road.

Please refer to Fig. 1 and Fig. 2, Fig. 2 is the first valve block concrete structure schematic diagram in Fig. 1, and Fig. 3 is the in Fig. 1 Two valve block concrete structure schematic diagrams, 5 processing sets up of the first valve block is fluted, and 3 upper end of valve seat is installed by welding with second Spring 6, the valve seat 3 are flexibly connected with the second valve block 7 of 6 lower section of second spring by second spring 6, second valve block 7 Processing sets up has slope surface, and 3 upper seal of valve seat is bonded with gate valve 8, and the gate valve 8 is manual knife gate valve, the valve seat 3 Left side is installed by welding with conduit 9, and the conduit 9 is steel pipe, is sealed and installed with check valve 10, the conduit 9 in the middle part of the conduit 9 Lower end is welded on the pipeline 11 connected with conduit, and left connector sleeve 12 is fixedly connected on the left of the pipeline 11.

The course of work: using fit sealings parts such as bolts, right connector sleeve 1 and left connector sleeve 12 is made to be connected to the pipe of water flowing Lu Zhong when carrying out water supply work, when hydraulic pressure is normal, can play the role of holding pressure, and hydraulic pressure is also possible to increase, when hydraulic pressure is excessively high, First valve block 5 moves downward, and overcomes the pretightning force of the first spring 4, until when the first pressure releasing passages 31 and the inner cavity of valve body 2 are connected, Water flows into the second pressure releasing passages 32 from the first pressure releasing passages 31, subsequently enters conduit 9, then enter pipeline 11 by conduit 9, reenters water Lu Zhong, when hydraulic pressure reduces, the first valve block 5 is moved right, and can block the first pressure releasing passages 31, cannot be introduced into the water in valve body 2 First pressure releasing passages can make the second valve when hydraulic pressure is greater than hydraulic pressure when the first pressure releasing passages 31 are connected with valve body 2, and continues to increase Block 7 does the movement of compression second spring 6, and the second pressure releasing passages 33 can directly connect valve body 2, and water proceeds to flow into conduit 9 and pipeline 11, Gate valve 8 is manually controlled if hydraulic pressure still increases with the purpose for realizing decompression, water can be made to flow out from third pressure releasing passages 33, to realize The purpose of pressure release.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (5)

1. a kind of safety relief holding valve, including right connector sleeve (1), it is characterised in that: fixed on the left of the right connector sleeve (1) to connect It is connected to valve body (2), valve body (2) upper center is fixedly installed with valve seat (3), and valve seat (3) processing sets up has first to let out Pressure road (31), the second pressure releasing passages (32) and third pressure releasing passages (33), first pressure releasing passages (31) are located at the bottom of valve seat (3), The third pressure releasing passages (33) are located at valve seat (3) upper end, and first pressure releasing passages (31) and third pressure releasing passages (33) pass through second Pressure releasing passages (32) connection, valve seat (3) lower end are fixedly installed with the first spring (4), and the first spring (4) right end is welded on In the first valve block (5) below the first pressure releasing passages (31), valve seat (3) upper end is installed by welding with second spring (6), institute It states valve seat (3) and is flexibly connected with the second valve block (7) below second spring (6) by second spring (6), on the valve seat (3) Side's sealing is bonded with gate valve (8), is installed by welding with conduit (9) on the left of the valve seat (3), sealing installation in the middle part of the conduit (9) Have check valve (10), conduit (9) lower end is welded on the pipeline (11) connected with conduit, fixed on the left of the pipeline (11) It is connected with left connector sleeve (12).

2. a kind of safety relief holding valve according to claim 1, it is characterised in that: the first valve block (5) processing is set It is equipped with groove.

3. a kind of safety relief holding valve according to claim 1, it is characterised in that: the second valve block (7) processing is set It is equipped with slope surface.

4. a kind of safety relief holding valve according to claim 1, it is characterised in that: the gate valve (8) is manual blade type Gate valve.

5. a kind of safety relief holding valve according to claim 1, it is characterised in that: the conduit (9) is steel pipe.