CN219493163U - Explosion-proof type electric regulating valve - Google Patents

Abstract

The utility model discloses an explosion-proof electric regulating valve, which comprises a valve body and an electric actuator, wherein a pressure relief hole is formed in the inner wall of the valve body, a pressure relief needle is inserted into the pressure relief hole, and the pressure relief needle is connected with the valve body through a pressure regulating structure; the pressure adjusting structure comprises a spring, a screw rod and a core rod, wherein the screw rod and the core rod are mutually telescopic and sleeved, one end of the screw rod extends out of the valve body and is in threaded connection with the valve body, the other end of the screw rod is inserted into the core rod, and the spring is sleeved at one end of the core rod extending out of the screw rod. According to the utility model, the pressure adjusting structure is arranged, the screw rod is rotated to enable the screw rod to rotate inwards or outwards to the valve body, so that the length of the spring between the screw rod and the pressure relief needle is adjusted, the pressure of the spring for pressing the pressure relief needle is adjusted, and the pressure relief pressure value which is adaptive is set according to different medium conveying requirements, so that the adaptability and the use flexibility of the whole valve are effectively improved.

Description

Explosion-proof type electric regulating valve

Technical Field

The utility model relates to the technical field of electric regulating valves, in particular to an explosion-proof electric regulating valve.

Background

The actuating mechanism of the electric valve is a full-electronic electric actuating mechanism, adopts an electromechanical integrated structure, has functions of in-machine servo operation, opening signal position feedback, position indication and the like, has strong functions, reliable performance and simple connection, and can be widely applied to industries such as petroleum, chemical industry, water treatment, papermaking, power stations, heat supply, light industry and the like. When the existing electronic regulating valve body generates larger pressure, the pressure is not released, and the valve body is easy to damage.

For this purpose, chinese patent: an explosion-proof electric control valve for chemical production is applied for to application number CN202022046219.9, and it discloses: through setting up pressure release piece and spring, when the valve body internal pressure is too big, the pressure release piece removes in to the mounting hole to the pressure release through-hole is opened, and the medium passes through the pressure release through-hole, makes pressure reduction, realizes the effect of pressure release protection.

However, when the pressure relief structure is installed, the spring has a certain elasticity, and the pressure relief effect can be achieved only after exceeding a fixed pressure value, and when different substances are conveyed in the valve body, the pressure relief pressure required by the pressure relief structure is different, and the pressure relief pressure value of the existing structure is certain, so that the pressure relief structure has poor suitability for pipelines conveying different substances, and therefore, the improvement still exists.

For this reason, we propose an explosion-proof electric control valve to solve the above problems.

Disclosure of Invention

The utility model aims to provide an explosion-proof electric regulating valve, which aims to solve the problems that the pressure relief pressure value of the existing structure proposed in the background art is certain, and the suitability of pipelines for conveying different substances is poor, so that the problem of improvement still exists.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the explosion-proof electric regulating valve comprises a valve body and an electric actuator, wherein a pressure relief hole is formed in the inner wall of the valve body, a pressure relief needle is inserted into the pressure relief hole, and the pressure relief needle is connected with the valve body through a pressure regulating structure;

the pressure regulating structure comprises a spring, a screw rod and a core rod, wherein the screw rod and the core rod are mutually telescopic and sleeved, one end of the screw rod extends out of the valve body and is in threaded connection with the valve body, the other end of the screw rod is inserted into the core rod in a plugging mode, the spring is sleeved at one end of the core rod extending out of the screw rod, and the screw rod is rotated by threads of the screw rod to drive the core rod and the spring to stretch or shorten so as to regulate the pressure applied to the outer side of the pressure relief needle.

In a further embodiment, a sheath is connected to one end of the pressure release needle, which is close to the core bar, and an annular elastic sealing ring is connected to one side of the sheath, which is close to the pressure release needle.

In a further embodiment, the outer diameter of the sheath is greater than the outer diameter of the pressure relief needle and the outer diameter of the sheath is less than the outer diameter of the screw.

In a further embodiment, a cross groove is formed in one end of the screw extending out of the valve body.

In a further embodiment, a sealing cover is connected to the outer side of one end of the screw extending out of the valve body in a sealing mode, and a dust cover is hinged to the upper port of the sealing cover and seals the cross groove against dust.

In a further embodiment, the outer wall of the core rod is inlaid with a plurality of rotating balls, and the balls are closely attached to the inner wall of the screw.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the pressure adjusting structure is arranged, the screw rod is rotated to enable the screw rod to rotate inwards or outwards to the valve body, so that the length of the spring between the screw rod and the pressure relief needle is adjusted, the pressure of the spring for pressing the pressure relief needle is adjusted, and the pressure relief pressure value which is adaptive is set according to different medium conveying requirements, so that the adaptability and the use flexibility of the whole valve are effectively improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic perspective view of a pressure regulating structure according to the present utility model;

fig. 3 is a schematic view of a partial enlarged structure at a in fig. 1 according to the present utility model.

In the figure: 1. a valve body; 2. an electric actuator; 3. a pressure relief hole; 4. a pressure relief needle; 41. a sheath; 42. an elastic sealing ring; 5. a spring; 6. a screw; 61. a cross groove; 7. a core bar; 71. a ball; 8. a sealing cover; 9. a dust cover.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Please refer to fig. 1, an explosion-proof electric control valve, including valve body 1 and electric actuator 2 of installing in valve body 1 top, wherein, electric actuator 2 structure keeps unanimous with the electron drive structure of the electronic control valve among the prior art, does not improve, pressure release hole 3 has been seted up to the inner wall of valve body 1, pressure release hole 3 intercommunication valve body 1's both ends passageway, the inside grafting of this pressure release hole 3 has pressure release needle 4, after pressure release needle 4 inserts pressure release hole 3 completely, can seal pressure release hole 3, and then prevent that the medium from circulating through pressure release hole 3.

Referring to fig. 1-2, considering that in the actual use process, the required pressure relief pressure is different when different mediums are conveyed, and according to each medium, the cost is higher for producing an electronic regulating valve with a required pressure relief value, therefore, a pressure regulating structure is arranged between a pressure relief needle 4 and a valve body 1, the pressure relief pressure can be regulated according to actual needs, the pressure regulating structure comprises a spring 5 and a screw rod 6 and a core rod 7 which are mutually telescopic and sleeved, wherein the surface of the screw rod 6 is provided with threads, the inside of the screw rod 6 is hollow, the screw rod 6 is in threaded connection with the valve body 1, one end of the screw rod 6 extends out of the valve body 1 is in a closed state, the other end of the screw rod 6 is open, the inside of the screw rod 6 is inserted with a telescopic core rod 7, the outside of one end of the core rod 7 extends out of the screw rod 6 is fixedly provided with the spring 5, when the screw rod 6 rotates relative to the valve body 1, and when the screw rod 6 rotates relative to the valve body 1, the screw rod 6 rotates, the compression spring 5 shortens, so that the pressure applied to the pressure of the pressure relief needle 4 by the spring 5 increases, and the pressure value is further increased; conversely, when the screw 6 is unscrewed, the pulling spring 5 is extended, so that the pressure applied to the pressure release needle 4 by the spring 5 is reduced, and the pressure release pressure value is reduced.

Referring to fig. 3, in order to improve the sealing effect of the pressure release needle 4 when inserted into the pressure release hole 3, a sheath 41 is connected to one end of the pressure release needle 4 close to the core rod 7, an annular elastic sealing ring 42 is connected to one side of the sheath 41 close to the pressure release needle 4, and the sealing performance of the pressure release needle 4 when inserted is improved by tightly adhering the elastic sealing ring 42 to the periphery of the pressure release hole 3, so that the possibility of medium leakage from a gap is reduced.

Referring to fig. 3, for facilitating the assembly and the later disassembly and maintenance of the whole structure, the outer diameter of the sheath 41 is larger than the outer diameter of the pressure release needle 4, the sheath 41 is larger, the contact surface is enlarged, the sealing effect is further improved, the outer diameter of the sheath 41 is smaller than the outer diameter of the screw rod 6, the sheath 41 is smaller than the screw rod 6, and the whole pressure regulating structure is conveniently inserted and assembled from the connecting screw hole of the valve body 1 and the screw rod 6.

Referring to fig. 3, in order to facilitate rotating the screw rod 6 and avoid the personnel from rotating by mistake, a cross groove 61 is formed at one end of the screw rod 6 extending out of the valve body 1, meanwhile, a sealing cover 8 is connected to the outer side of one end of the screw rod 6 extending out of the valve body 1 in a sealing manner, the screw rod 6 is retracted in the sealing cover 8, the mistaken touch rotation can be prevented, and meanwhile, a dust cover 9 is hinged to the upper port of the sealing cover 8, and the dust cover 9 seals the cross groove 61.

Referring to fig. 3, in order to improve the stability of the pressure release needle 4 during pressure release movement, a plurality of rotating balls 71 are embedded on the outer wall of the core rod 7, and the balls 71 are tightly attached to the inner wall of the screw rod 6, so that the stability of the core rod 7 and the screw rod 6 during expansion and contraction can be maintained, left and right shaking is avoided, and meanwhile, the sliding property of the core rod 7 and the screw rod 6 during expansion and contraction can be ensured due to small rolling friction force caused by the fact that the balls 71 can rotate.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. The utility model provides an explosion-proof type electric control valve, includes valve body (1) and electric actuator (2), its characterized in that: the inner wall of the valve body (1) is provided with a pressure relief hole (3), a pressure relief needle (4) is inserted into the pressure relief hole (3), and the pressure relief needle (4) is connected with the valve body (1) through a pressure adjusting structure;

the pressure regulating structure comprises a spring (5), a screw rod (6) and a core rod (7), wherein the screw rod (6) and the core rod (7) are mutually telescopic and sleeved, one end of the screw rod (6) extends out of the valve body (1) and is in threaded connection with the valve body, the other end of the screw rod (6) is inserted into the core rod (7), the spring (5) is sleeved at one end of the core rod (7) extending out of the screw rod (6), and the screw rod (6) is driven by threaded rotation to extend or shorten the core rod (7) and the spring (5) so as to regulate the pressure applied to the outer side of the pressure relief needle (4).

2. An explosion-proof electric regulator valve according to claim 1, wherein: one end of the pressure release needle (4) close to the core bar (7) is connected with a sheath (41), and one side of the sheath (41) close to the pressure release needle (4) is connected with an annular elastic sealing ring (42).

3. An explosion-proof electric regulator valve according to claim 2, wherein: the outer diameter of the sheath (41) is larger than that of the pressure release needle (4), and the outer diameter of the sheath (41) is smaller than that of the screw (6).

4. An explosion-proof electric regulator valve according to claim 1, wherein: one end of the screw rod (6) extending out of the valve body (1) is provided with a cross groove (61).

5. An explosion-proof electric regulator valve according to claim 4, wherein: the screw rod (6) stretches out the one end outside sealing connection of valve body (1) and has sealed cowling (8), and the last port of sealed cowling (8) articulates there is shield (9), and this shield (9) seals dustproof to cross recess (61).

6. An explosion-proof electric regulator valve according to claim 1, wherein: the outer wall of the core bar (7) is inlaid with a plurality of rotating balls (71), and the balls (71) are tightly attached to the inner wall of the screw (6).