CN208634456U - A kind of mechanical type pressure relief device - Google Patents

Abstract

The utility model discloses a kind of mechanical type pressure relief devices, including valve body and adjustment lid, the valve body bottom righthand side offers interface, and valve body upper end is equipped with top cover labyrinth, the top cover labyrinth upper end face is provided with spring base, and spring base bottom offers stepped hole, and stepped hole is through top cover labyrinth and spring base upper and lower end faces, top cover labyrinth left and right ends surface offers 2 total pressure relief openings, and it is respectively arranged with the first gas pressure relief slot from bottom to top on the inside of total pressure relief opening, second gas pressure relief slot, third gas pressure relief slot and the 4th gas pressure relief slot, the adjustment lid is mounted on right above spring base, the adjustment lower spring end is equipped with slide bar, the seal head upper end is equipped with holddown spring.The mechanical type pressure relief device has the function of setting pressure release size, accelerates pressure release speed, and the device overall structure is simple, convenient for operation, and prevents ambient atmos from entering inside the pressure relief device, increases the safety of the device.

Description

A kind of mechanical type pressure relief device

Technical field

The utility model relates to field of mechanical technique, specially a kind of mechanical type pressure relief device.

Background technique

With the rapid development of social scientific and technological level, the development in modern mechanical field is getting faster, and mechanical technique is led Domain is using more and more extensive, and wherein mechanical type pressure relief device, has played highly important effect in terms of pipeline transportation, ensures The safety of pipeline transportation, still, structure is complicated for existing pressure relief device, is easily damaged, and replacement cost is higher, also, let out The opening that pipeline cannot be closed after pressure in time, make gas in pipelines leak and the entrance of ambient atmos, while most of letting out Pressure device cannot set pressure size, bring great inconvenience to user.

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 mechanical type pressure relief device Structure is complicated for existing pressure relief device, is easily damaged, and replacement cost is higher, also, cannot close pipeline after pressure release in time Opening, make gas in pipelines leak and the entrance of ambient atmos, while most of pressure relief device cannot set pressure size, The problem of great inconvenience is brought to user.

To achieve the above object, the utility model provides the following technical solutions: a kind of mechanical type pressure relief device, including valve body It is covered with adjustment, the valve body bottom righthand side offers interface, and valve body upper end is equipped with top cover labyrinth, top cover labyrinth upper end table Face is provided with spring base, and spring base bottom offers stepped hole, and stepped hole is through above and below top cover labyrinth and spring base Both ends of the surface, top cover labyrinth left and right ends surface offers 2 total pressure relief openings, and sets respectively from bottom to top on the inside of total pressure relief opening Be equipped with the first gas pressure relief slot, the second gas pressure relief slot, third gas pressure relief slot and the 4th gas pressure relief slot, the adjustment lid be mounted on spring base just on Side, and adjust lid lower end and adjustment spring is installed, the adjustment lower spring end is equipped with slide bar, and slide bar upper and lower ends are set respectively It is equipped with fixing head and seal head, and slide bar, through stepped hole, the seal head upper end is equipped with holddown spring.

Preferably, the spring base is ring structure, and the internal height of spring base is greater than the maximum lift of slide bar.

Preferably, total pressure relief opening respectively with the first gas pressure relief slot, the second gas pressure relief slot, third gas pressure relief slot and the 4th gas pressure relief slot It mutually connects, and the diameter of total pressure relief opening is all larger than the first gas pressure relief slot, the second gas pressure relief slot, third gas pressure relief slot and the 4th gas pressure relief slot Diameter.

Preferably, the adjustment lid upper end diameter is greater than lower end diameter, and upper adjustment outer side of lid and spring base inner thread Connection.

Preferably, the slide bar mid diameter is less than the diameter of upper and lower ends, and slide bar and stepped hole constitute slide construction.

Preferably, the diameter of the fixing head is greater than stepped hole upper end diameter, and fixing head diameter is less than adjustment lid lower end Internal diameter.

Compared with prior art, the utility model has the beneficial effects that the mechanical type pressure relief device,

1. total pressure relief opening is mutually connected with the first gas pressure relief slot, the second gas pressure relief slot, third gas pressure relief slot and the 4th gas pressure relief slot respectively, As the pressure of valve inner increases, slide bar is pushed into upward sliding by air pressure, lets out the first gas pressure relief slot, the second gas pressure relief slot, third Indent and the 4th gas pressure relief slot are opened one by one, make the pressure release speed for accelerating the pressure relief device, and the device overall structure is simple, is convenient for Operation；

2. the elastic force for adjusting spring and holddown spring acts on jointly with valve inner pressure balance, the pressure relief device is expanded The pressure limit that can bear, and by rotation adjustment lid, so that adjustment spring force is changed, and then have the pressure relief device There is the function of setting pressure release size；

3. the elastic force effect for adjusting spring and holddown spring makes slide bar rapidly to downslide after the reduction of valve inner pressure It is dynamic, the first gas pressure relief slot, the second gas pressure relief slot, third gas pressure relief slot and the 4th gas pressure relief slot are closed, pressure release is stopped, preventing ambient atmos into Enter inside the pressure relief device, increases the safety of the device.

Detailed description of the invention

Fig. 1 is the utility model front schematic diagram of internal structure；

Fig. 2 is schematic diagram of internal structure on the left of the utility model；

Fig. 3 is that the utility model overlooks external structure schematic diagram.

In figure: 1, valve body；2, interface；3, top cover labyrinth；4, spring base；5, stepped hole；6, total pressure relief opening；7, the first pressure release Slot；8, the second gas pressure relief slot；9, third gas pressure relief slot；10, the 4th gas pressure relief slot；11, adjustment lid；12, spring is adjusted；13, slide bar；14, Fixing head；15, seal head；16, holddown spring.

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.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of mechanical type pressure relief device, including valve body 1, Interface 2, top cover labyrinth 3, spring base 4, stepped hole 5, total pressure relief opening 6, the first gas pressure relief slot 7, the second gas pressure relief slot 8, third gas pressure relief slot 9, the 4th gas pressure relief slot 10, adjustment lid 11, adjustment spring 12, slide bar 13, fixing head 14, seal head 15 and holddown spring 16, valve body 1 Bottom righthand side offers interface 2, and 1 upper end of valve body is equipped with top cover labyrinth 3, and 3 upper end face of top cover labyrinth is provided with spring base 4, And 4 bottom of spring base offers stepped hole 5, and stepped hole 5 is through 4 upper and lower end faces of top cover labyrinth 3 and spring base, spring Seat 4 is ring structure, and the internal height of spring base 4 is greater than the maximum lift of slide bar 13, in the device pressure leak process, slide bar 13 move up, and prevent the upper end of slide bar 13 to be in contact with adjustment lid 11, expand the range of the device pressure release, top cover labyrinth 3 Left and right ends surface offers 2 total pressure relief openings 6, and 6 inside of total pressure relief opening be respectively arranged with from bottom to top the first gas pressure relief slot 7, Second gas pressure relief slot 8, third gas pressure relief slot 9 and the 4th gas pressure relief slot 10, total pressure relief opening 6 respectively with the first gas pressure relief slot 7, the second gas pressure relief slot 8, Third gas pressure relief slot 9 is mutually connected with the 4th gas pressure relief slot 10, and the diameter of total pressure relief opening 6 is all larger than the first gas pressure relief slot 7, the second pressure release The diameter of slot 8, third gas pressure relief slot 9 and the 4th gas pressure relief slot 10 is convenient for total pressure relief opening 6 when the device is in maximum pressure release state Air pressure in first gas pressure relief slot 7, the second gas pressure relief slot 8, third gas pressure relief slot 9 and the 4th gas pressure relief slot 10 is effectively discharged, valve body 1 is maintained Air pressure inside balance, adjustment lid 11 are mounted on the surface of spring base 4, and adjust 11 lower end of lid and be equipped with adjustment spring 12, adjust Whole 11 upper end diameter of lid is greater than lower end diameter, and 11 outside of upper adjustment lid is connect with 4 inner thread of spring base, is not using the dress When setting, adjustment lid 11 is disassembled convenient for user and cleans and repairs, the practicability of the device is improved, adjusts spring 12 lower ends are equipped with slide bar 13, and 13 upper and lower ends of slide bar are respectively arranged with fixing head 14 and seal head 15, and slide bar 13 passes through It is through at stepped hole 5,13 mid diameter of slide bar is less than the diameter of upper and lower ends, and slide bar 13 and stepped hole 5 constitute slide construction, In the device pressure leak process, convenient for slide bar 13 according to the air pressure inside valve body 1 in 5 internal slide of stepped hole, accurate regulation valve body 1 Air pressure inside is stablized, while improving the accuracy of the device, and the diameter of fixing head 14 is greater than 5 upper end diameter of stepped hole, and solid Determine first 14 diameter and improves the safety of the device less than adjustment 11 bottom diameter of lid convenient for slide bar 13 is fixed, it is fixed First 14 upper end is equipped with holddown spring 16.

Working principle: when using the mechanical type pressure relief device, air pressure first is passed to valve from the interface 2 of 1 bottom righthand side of valve body Inside body 1, and 1 air pressure inside of valve body directly acts on the seal head 15 of 13 lower end of slide bar, to act on adjustment 12 He of spring Holddown spring 16 makes slide bar 13 in 5 inside upward sliding of stepped hole, and the first gas pressure relief slot 7, the second gas pressure relief slot 8, third pressure release Slot 9 and the 4th gas pressure relief slot 10 are opened one by one with 13 upward sliding of slide bar, while the adjustment lid by changing 4 upper end of spring base 11 setting pressure release sizes, then 1 air pressure inside of valve body is let out from the first gas pressure relief slot 7, the second gas pressure relief slot 8, third gas pressure relief slot 9 and the 4th Indent 10 enters total pressure relief opening 6, and air pressure is discharged from total 6 upper end of pressure relief opening, makes the reduction of 1 air pressure inside of valve body, inside valve body 1 After air pressure reduces, the elastic force for adjusting spring 12 and holddown spring 16 is respectively acting on the fixing head 14 of 13 upper and lower ends of slide bar and close End socket 15 closes the first gas pressure relief slot 7, the second gas pressure relief slot 8, third gas pressure relief slot 9 and the 4th gas pressure relief slot 10, stops pressure release, whole During a, top cover labyrinth 3 plays sealing function to the pressure relief device upper end, increases whole practicability.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (6)

1. a kind of mechanical type pressure relief device, including valve body (1) and adjustment lid (11), it is characterised in that: valve body (1) bottom righthand side It offers interface (2), and valve body (1) upper end is equipped with top cover labyrinth (3), top cover labyrinth (3) upper end face is provided with bullet Spring abutment (4), and spring base (4) bottom offers stepped hole (5), and stepped hole (5) is through top cover labyrinth (3) and spring base (4) upper and lower end faces, top cover labyrinth (3) the left and right ends surface offer 2 total pressure relief openings (6), and in total pressure relief opening (6) Side is respectively arranged with the first gas pressure relief slot (7), the second gas pressure relief slot (8), third gas pressure relief slot (9) and the 4th gas pressure relief slot from bottom to top (10), the adjustment lid (11) is mounted on the surface of spring base (4), and adjusts lid (11) lower end and be equipped with adjustment spring (12), adjustment spring (12) lower end is equipped with slide bar (13), and slide bar (13) upper and lower ends are respectively arranged with fixing head (14) and seal head (15), and slide bar (13), through stepped hole (5), seal head (15) upper end is equipped with holddown spring (16)。

2. a kind of mechanical type pressure relief device according to claim 1, it is characterised in that: the spring base (4) is ring junction Structure, and the internal height of spring base (4) is greater than the maximum lift of slide bar (13).

3. a kind of mechanical type pressure relief device according to claim 1, it is characterised in that: total pressure relief opening (6) respectively with First gas pressure relief slot (7), the second gas pressure relief slot (8), third gas pressure relief slot (9) are mutually connected with the 4th gas pressure relief slot (10), and total pressure relief opening (6) diameter is all larger than the straight of the first gas pressure relief slot (7), the second gas pressure relief slot (8), third gas pressure relief slot (9) and the 4th gas pressure relief slot (10) Diameter.

4. a kind of mechanical type pressure relief device according to claim 1, it is characterised in that: (11) upper end diameter is covered in the adjustment It is connect greater than lower end diameter, and on the outside of upper adjustment lid (11) with spring base (4) inner thread.

5. a kind of mechanical type pressure relief device according to claim 1, it is characterised in that: slide bar (13) mid diameter is small In the diameter of upper and lower ends, and slide bar (13) and stepped hole (5) constitute slide construction.

6. a kind of mechanical type pressure relief device according to claim 1, it is characterised in that: the diameter of the fixing head (14) is big In stepped hole (5) upper end diameter, and fixing head (14) diameter is less than adjustment lid (11) bottom diameter.