CN218543302U - Combined valve core structure of safety valve - Google Patents

Abstract

The utility model discloses a modular case structure of relief valve, the technical scheme of adoption is, including case, groove, spring one, supporting pad, O type circle, spacing pad, bolt, spring two, backing plate, limiting plate, ring, ladder groove, supporting shoe and briquetting. The supporting pad arranged in the device is contacted with the valve body shell, when the first spring performs rebound operation, the elastic force of the first spring causes a small amount of displacement, the surface of an inner groove of the valve core can not be scratched, and the valve core is protected; and in the process of the tight case in handle top, the impact and the friction of backing plate can be cushioned to spring two that set up, prevent that spacing pad from causing the damage, prolong the life-span of O type circle.

Description

Combined valve core structure of safety valve

Technical Field

The utility model belongs to relief valve field of making relates to a modular case structure of relief valve.

Background

The safety valve is in a normally closed state under the action of external force, and when the pressure of the system exceeds a specified value, the safety valve is opened to discharge a part of gas in the system, so that the pressure of the system does not exceed an allowable value, and the system is prevented from accidents caused by overhigh pressure.

When the safety valve works, the valve core finishes the return work through the resilience of the spring, in the process of jacking the valve core by the handle, the friction impact can be caused to the limiting pad in the valve core in the patent 202022498513.3, and the limiting pad can be damaged by long-time use, so that the force is deviated, and the service life of the O-shaped ring is influenced; at the sealed position of case, often adopt the metal block laminating, there is steam inside the pipeline, can cause the corrosion on case surface to cause the not good condition of sealed effect, play the effect of safe pressure release on the contrary.

SUMMERY OF THE UTILITY MODEL

In view of the problem that exists among the prior art, the utility model discloses a technical scheme be: the valve core comprises a valve core, the groove fixed mounting on the upper portion of valve core has spring one, the upper portion fixed mounting of spring one has the supporting pad, spacing pad is installed through the bolt in the lower part ladder inslot of valve core, spacing pad has the backing plate through two fixed mounting of spring, spacing pad below fixed mounting has the briquetting, the briquetting below corresponds there is the supporting shoe, supporting shoe fixed mounting is in the backing plate top, and spring two can utilize elasticity, and when the exogenic action, cushion spacing pad, prevent that external force from leading to the fact the impact to spacing pad, and spring one can push up the supporting pad tight step position in the inside sealing position of valve body and inslot, realizes sealedly.

As a preferred scheme of the utility model, the supporting pad middle part is provided with the round hole, and the round hole of setting can pass the round platform on case upper portion, makes the supporting pad enter the inslot, and the upper portion of supporting pad is used for enough laminating with the contact of valve body internal seal position, and the lower part of supporting pad is used for laminating with the step contact on the inslot on case upper portion.

As the utility model discloses a preferred scheme, the round is handled in supporting pad outside corner, through setting up the radius, makes the stress dispersion of supporting pad outside corner, when the external force gives the extrusion force, the surface of supporting pad can evenly dispersed to the power, stress concentration point position can not appear to when using, be difficult to the crack appears, prolongs the life of supporting pad.

As a preferred scheme of the utility model, ladder groove mid-mounting has O type circle, O type circle is installed in spacing pad outside middle part, and the medial surface and the spacing laminating of filling up the lateral surface of O type circle, and the ladder pore wall laminating of its lateral surface and case lower part can rise tightly between case and spacing pad, makes spacing pad rise tightly with the bolt, prevents that the bolt from appearing not hard up.

As the utility model discloses an optimal scheme, O type circle outside corner carries out the radius and handles, sets up the radius and can reduce stress concentration, carries out the extruded time at spacing O type circle that fills up, and the stress dispersion of spacing O outside corner, the surface of supporting pad can evenly dispersed to the power, is difficult to appear stress concentration point position, is difficult to appear the internal force and causes the problem of damage.

As the utility model discloses an optimal scheme, spacing pad below fixed mounting has two sets of limiting plates, the limiting plate is the circular arc type, limiting plate circumference surface slidable mounting has the ring, ring fixed mounting is in the backing plate top, the lateral surface of limiting plate and the medial surface laminating installation of ring, the centre of a circle between them is concentric.

As the utility model discloses a preferred scheme, the supporting pad adopts the plastic material, and the supporting pad be the ring form, divide into inside and outside two rings, and the inner circle chooses for use rubber materials, can seal, the inner circle is sealed with valve body and case contact in work, and the outer lane is the plastics material, and the outer lane adopts the plastics material, can provide the support.

As a preferred scheme of the utility model, O type circle adopts the rubber material, chooses for use the rubber material, has good elasticity expansibility, through the inflation of self material, can rise and tightly in the outside on 6 upper portions of spacing pad, makes the shoulder hole laminating of spacing pad and case inseparabler, prevents that spacing pad from appearing not hard up to the influence is used.

The utility model discloses a combination formula case structure beneficial effect of relief valve: the upper part of a supporting pad arranged in the device is contacted with a sealing part in the valve body, and the lower part of the supporting pad is contacted and sealed with a groove in the valve core at the same time, so that when a first spring performs rebound work, the elastic force of the first spring pushes the supporting pad, and the supporting pad can be tightly attached to the inside of the valve body;

and in the process of tightly propping the valve core by the handle, the impact and the friction of the backing plate can be buffered by the second spring, so that the limit pad is prevented from being damaged, and the service life of the O-shaped ring is prolonged.

Drawings

Fig. 1 is an overall structural view of a combined valve core structure of a safety valve according to the present invention;

fig. 2 is a lower structural view of a combined valve core structure of a safety valve according to the present invention;

fig. 3 is a top structural view of a combined valve core structure of a safety valve according to the present invention;

fig. 4 is a supporting pad structure diagram of the combined valve core structure of the safety valve according to the present invention;

in the figure: the pressure-reducing valve comprises a valve core 1, a groove 2, a spring I3, a support pad 4, an O-shaped ring 5, a limiting pad 6, a bolt 7, a spring II 8, a spring II, a backing plate 9, a limiting plate 10, a ring 11, a stepped groove 12, a support block 13 and a pressing block 14.

Detailed Description

As shown in fig. 1 to 4, the utility model discloses a combined valve core structure of safety valve, the technical scheme of adoption is, including valve core 1, groove 2 fixed mounting on the upper portion of valve core 1 has spring one 3, the upper portion fixed mounting of spring one 3 has supporting pad 4, install spacing pad 6 through bolt 7 in the lower part ladder groove 12 of valve core 1, spacing pad 6 has backing plate 9 through two 8 fixed mounting of spring, fixed mounting has briquetting 14 below spacing pad 6, there is supporting shoe 13 corresponding to briquetting 14 below, supporting shoe 13 fixed mounting is above backing plate 9, in this embodiment, the upper portion of the supporting pad 4 that sets up contacts with the inside seal part of valve body, the lower part of supporting pad 4 is sealed with the groove contact in the valve core simultaneously, when spring one 3 kick-backs work, the elasticity of spring one 3 has thrust to supporting pad 4, make supporting pad 4 can paste tight valve body inside; and in the process of tightly propping the valve core 1 by the handle, the impact and the friction of the backing plate 9 can be buffered by the second spring 8, the limit pad 6 is prevented from being damaged, and the service life of the O-shaped ring 5 is prolonged.

Supporting pad 4 middle part is provided with the round hole, and the round hole of setting, supporting pad 4 of being convenient for can be through the round platform that case 1 upper portion central point put to in the locking relief valve, supporting pad 4 is pushed down, and spring 3 is compressed, and supporting pad 4 is in the deep groove 2, and the inner circle of supporting pad 4 pastes tightly with the round platform of 2 inboards in groove for form between supporting pad 4 and the case 1 sealedly.

The round treatment is carried out to the corner in the outside of supporting pad 4, through the round treatment, not only pleasing to the eye, more mellow and more, prevents that the corner from being cut and rubbed, causes the damage of supporting pad, and the round treatment can disperse concentrated stress effectively simultaneously, and when pressing supporting pad 4, the surface of force ability homodisperse to the supporting pad 4 outer lane prevents to crush supporting pad 4, prolongs supporting pad 4's life.

The O-shaped ring 5 is arranged in the middle of the stepped groove 12, the O-shaped ring 5 is arranged in the middle of the outer side of the limiting pad 6, the O-shaped ring 5 is made of rubber, and can be tightly tensioned on the outer side of the upper portion of the limiting pad 6 through expansion of the material, so that the limiting pad 6 is more stable to be connected with the valve core 1, and the bolt 7 is outwards supported by the limiting pad 6 through expansion, and looseness is not prone to occurring.

The round is handled to 5 outside corners of O type circle, handles through the round, can make the internal stress of O type circle be difficult to concentrate, is extruded the inflation in-process at O type circle 5, can not cause stress concentration because of pressing the dynamic deformation in-process and is being extruded the position, prevents to cause the fracture to influence spacing pad 6's elasticity degree, life-span when preventing to influence the device.

Two limiting plates 10 are fixedly mounted below the limiting pad 6, the two limiting plates 10 are symmetrically arranged, the circular rings 11 are slidably mounted on the outer surfaces of the circumferences of the two limiting plates 10, the circular rings 11 are fixedly mounted at the outer ends of the upper surface of the backing plate 9, the arranged circular rings 11 can slide outside the limiting plates 10, and the path of the backing plate 9 in up-and-down reciprocating motion is consistent.

Supporting pad 4 adopts the plastic material, and the supporting pad be the ring form, divide into inside and outside two rings, and the inner circle is the rubber material, and the inner circle chooses for use rubber to seal through extrusion expansion, has good sealed effect, and the outer lane is the plastics material, and the material is hard, is difficult to because steam causes the oxidation, and the plastics material that the outer lane adopted has high strength, can provide the support.

The utility model discloses a combination formula case structure theory of operation of relief valve: when the device is used, firstly, the valve element 1 is closed, external force is applied through the extrusion base plate 9, the second spring 8 is compressed, the circular ring 11 slides outside the limiting plate 10, the downward pressing is continued, the supporting block 13 is in contact with the pressing block 14, the limiting pad 6 is pushed, the valve element 1 is moved, the laminating part inside the valve body pushes the supporting pad 4, the first spring 3 is compressed, the supporting pad 4 is pushed back into the groove 2, the lower part of the supporting pad 4 is laminated with the circular table on the inner side of the groove 2, the upper part of the supporting pad 4 is laminated with the valve body, the safety valve is locked, after the external force is removed, the second spring 8 rebounds, the valve element 1 is pushed tightly against the valve body continuously, the locking work is completed, when the pressure is high, the valve element 1 is pushed to move in the opposite direction, the second spring 8 is compressed, the pressure is outwards leaked along the groove 2, and the pressure relief is completed.

The valve core, the first spring, the supporting pad, the O-shaped ring, the limiting pad, the bolt, the second spring, the limiting plate, the circular ring, the supporting block and the pressing block are all products which can be easily bought in the market, and a person skilled in the field of connection modes and functions of pins can consult related technical manuals or teaching materials and obtain technical inspiration through limited tests.

Components not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art, and modifications or variations without creative efforts are still within the scope of the present invention.

Claims (8)

1. The utility model provides a combination formula case structure of relief valve which characterized in that: including case (1), groove (2) fixed mounting on the upper portion of case (1) has spring (3), the upper portion fixed mounting of spring (3) has supporting pad (4), install spacing pad (6) through bolt (7) in lower part ladder groove (12) of case (1), spacing pad (6) have backing plate (9) through two (8) fixed mounting of spring, spacing pad (6) below fixed mounting has briquetting (14), briquetting (14) below corresponds there is supporting shoe (13), supporting shoe (13) fixed mounting is in backing plate (9) top.

2. The combined valve core structure of a safety valve according to claim 1, wherein: the middle part of the supporting pad (4) is provided with a round hole.

3. The combined spool structure of a relief valve according to claim 1, wherein: and the corners of the outer side of the supporting pad (4) are rounded.

4. The combined spool structure of a relief valve according to claim 1, wherein: stepped groove (12) mid-mounting has O type circle (5), O type circle (5) are installed in spacing pad (6) outside middle part.

5. The combined valve core structure of a safety valve according to claim 4, wherein: and the outer side corner of the O-shaped ring (5) is subjected to rounding treatment.

6. The combined spool structure of a relief valve according to claim 1, wherein: spacing pad (6) below fixed mounting has two sets of limiting plates (10), limiting plate (10) circumference surface slidable mounting has ring (11), ring (11) fixed mounting is in backing plate (9) top.

7. The combined spool structure of a relief valve according to claim 1, wherein: the supporting pad (4) is made of plastic materials.

8. The combined spool structure of a relief valve according to claim 4, wherein: the O-shaped ring (5) is made of rubber.

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