CN220337484U

CN220337484U - Safety valve capable of preventing valve rod from deflecting

Info

Publication number: CN220337484U
Application number: CN202321613866.0U
Authority: CN
Inventors: 周敏杰; 周柯
Original assignee: Changzhou Amg Refrigeration Equipment Co ltd
Current assignee: Changzhou Amg Refrigeration Equipment Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2024-01-12
Anticipated expiration: 2033-06-25

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a safety valve for preventing a valve rod from deflecting, which comprises a valve body, wherein the upper side of the valve body is rotationally connected with a fixed seat, the inner thread of the fixed seat is connected with a valve rod, the surface of the valve rod is fixedly connected with a plugging disc, the plugging disc is positioned on the upper side of a communication port in the valve body, the lower side of the plugging disc is fixedly connected with a fixed rod on the lower side of the surface of the valve rod.

Description

Safety valve capable of preventing valve rod from deflecting

Technical Field

The utility model relates to the technical field of valves, in particular to a safety valve capable of preventing a valve rod from deflecting.

Background

In a valve which is horizontally arranged and adopts a piston type valve core structure, the stress on the bottom surface of the valve core shows obvious unbalance phenomenon, the unbalanced moment is generated at the bottom surface of the valve core due to the unbalanced pressure distribution phenomenon, and the valve core can drive the valve rod to deflect under the action of the unbalanced moment, so that the valve rod and the valve cover are extruded, and the valve rod is bent and deformed.

In the valve structure on the market at present, lack the improvement design to the valve rod clamping stagnation problem that arouses because the unbalanced moment that the case received, chinese patent of utility model CN211371292U discloses a novel steam regulating valve, this structure passes through the elastic component with case and circulation board to be connected, when the driving element on this steam valve upper portion became invalid, the case moves down under the effect of gravity and elastic component to make case and circulation board closely laminate through the pressure that steam brought, make the evaporating valve be in the closed condition all the time, prevent to cause the injury to the equipment that uses steam, the maintenance personal of being convenient for overhauls.

However, the valve structure is tightly matched between the valve rod and the valve cover, large extrusion force is easy to generate between the valve rod and the valve cover, the valve rod has no additional supporting force to increase the vertical stabilizing effect, and the valve rod can generate clamping stagnation under the thrust of fluid for a long time.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a safety valve for preventing the deflection of a valve rod, and solves the background problem.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a prevent inclined relief valve of valve rod, includes the valve body, the upside of valve body rotates and is connected with the fixing base, the inside threaded connection of fixing base has the valve rod, the fixed surface of valve rod is connected with the shutoff dish, the shutoff dish is located the upside of the inside intercommunication mouth of valve body, the downside of shutoff dish is in the surperficial downside fixedly connected with dead lever of valve rod, a plurality of notches have been seted up to the surperficial downside of dead lever.

Preferably, the downside of dead lever is in the inside fixed perpendicular groove of seting up of valve body, the dead lever activity is in the inside of perpendicular groove, a plurality of transverse grooves have all been fixedly setted up in the inside of valve body to the left and right sides of perpendicular groove, the inside sliding connection in transverse groove has the movable rod, the surface cover of movable rod is equipped with the cooperation spring, the surface sliding connection of notch has the lug, lug and movable rod fixed connection.

Preferably, the upper end face of fixing base fixedly connected with connecting rod, the upper end face fixedly connected with rolling disc of connecting rod.

Preferably, the upper side of the plugging disc is movably connected with a steel ring on the surface of the valve rod, the surface of the steel ring is fixedly connected with an elastic ring, the elastic ring is fixedly connected with the inside of the valve body, and the thickness of the elastic ring is larger than that of the steel ring.

Preferably, a sealing ring is arranged at the joint of the plugging disc and the valve body.

Preferably, the connecting rod, the fixing seat, the steel ring, the valve rod, the plugging disc and the fixing rod are all coaxially arranged.

Advantageous effects

The utility model provides a safety valve capable of preventing a valve rod from deflecting. Compared with the prior art, the method has the following beneficial effects:

1. according to the utility model, the notch is arranged on the surface of the fixed rod and is clamped with the convex block, so that stability is improved, when the fixed rod is inserted into the vertical groove, the convex block is pushed by the surface of the fixed rod to drive the movable rod to slide towards the inner part of the transverse groove, when the convex block is contacted with the notch, the movable rod controls the convex block to move under the action of the matched spring, the convex block enters the inner part of the notch to form a closed state, and the friction force is improved by increasing the contact area between the convex block and the notch, so that the vertical stability of the fixed rod is further improved;

2. according to the utility model, the valve rod is buffered by arranging the steel ring and the elastic ring, so that the extrusion acting force between the valve rod and the fixed seat is buffered while the normal movement and sealing of the valve rod are ensured, and the deflection of the valve rod is avoided.

Drawings

FIG. 1 is a schematic diagram of a safety valve with a valve stem prevented from deflecting;

FIG. 2 is a schematic diagram showing the internal structure of a safety valve for preventing deflection of a valve rod according to the present utility model; the method comprises the steps of carrying out a first treatment on the surface of the

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic illustration of the connection of a recess to a protrusion on a valve stem surface;

FIG. 5 is a schematic view of the steel ring and the elastic ring according to the present utility model;

in the figure: 1. a valve body; 2. a rotating disc; 3. a connecting rod; 4. a fixing seat; 6. a valve stem; 7. a plugging disc; 8. an elastic ring; 9. a steel ring; 10. a fixed rod; 11. a transverse groove; 12. a mating spring; 13. a movable rod; 14. a bump; 15. a vertical groove; 16. a recess.

Detailed Description

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.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a prevent inclined relief valve of valve rod, including valve body 1, the upside of valve body 1 rotates and is connected with fixing base 4, the inside threaded connection of fixing base 4 has valve rod 6, the fixed surface of valve rod 6 is connected with shutoff dish 7, shutoff dish 7 is located the upside of the inside intercommunication mouth of valve body 1, drive and carry out vertical motion rather than threaded connection's valve rod 6 when fixing base 4 rotates, valve rod 6 drives and moves rather than fixed connection's shutoff dish 7, thereby realize the intercommunication and the closure of valve body 1, the downside of shutoff dish 7 is in the fixed surface downside fixedly connected with dead lever 10 of valve rod 6, a plurality of notches 16 have been seted up to the fixed surface downside of dead lever 10.

In order to further improve the stability of the valve rod 6, a vertical groove 15 is fixedly formed in the valve body 1 at the lower side of the fixed rod 10, the fixed rod 10 moves in the vertical groove 15, a plurality of transverse grooves 11 are fixedly formed in the valve body 1 at the left side and the right side of the vertical groove 15, a movable rod 13 is slidably connected in the transverse grooves 11, a matched spring 12 is sleeved on the surface of the movable rod 13, a bump 14 is slidably connected on the surface of the notch 16, and the bump 14 is fixedly connected with the movable rod 13.

In order to further improve the opening and closing effect of the valve body 1, the upper end surface of the fixed seat 4 is fixedly connected with a connecting rod 3, the upper end surface of the connecting rod 3 is fixedly connected with a rotating disc 2, the connecting rod 3 is driven to rotate by twisting the rotating disc 2, the connecting rod 3 drives the fixed seat 4 fixedly connected with the connecting rod to rotate,

in order to further improve the stability of valve rod 6, the upside of shutoff dish 7 is in valve rod 6's surface swing joint have steel ring 9, and steel ring 9's fixed surface is connected with elastic ring 8, and elastic ring 8 and the inside fixed connection of valve body 1, as shown in fig. 5, the thickness of elastic ring 8 is greater than steel ring 9, and when valve rod 6 received the fluid force, steel ring 9 was buffering work to valve rod 6 under elastic ring 8's elasticity effect, avoided valve rod 6 to lead to the fact the skew because of extrusion deformation.

In order to further improve the sealing effect of the sealing disc 7, a sealing ring is arranged at the joint of the sealing disc 7 and the valve body 1.

The connecting rod 3, the fixing seat 4, the steel ring 9, the valve rod 6, the plugging disc 7 and the fixing rod 10 are all coaxially arranged.

Working principle: in a general valve structure, when a valve rod 6 controls a plugging disc 7 to plug a communication part of a valve body 1, uneven distribution of fluid in the valve causes uneven force applied to the valve rod 6, unbalanced moment generated on the surface of the valve rod 6 deflects, so that extrusion deformation is generated between the valve rod 6 and a fixed seat 4, and deflection of the valve rod 6 is caused; according to the utility model, the notch 16 is arranged on the surface of the fixed rod 10 and is clamped with the convex block 14, so that stability is improved, when the fixed rod 10 is inserted into the vertical groove 15, the convex block 14 is pushed by the surface of the fixed rod 10 to drive the movable rod 13 to slide towards the inside of the horizontal groove 11, when the convex block 14 is contacted with the notch 16, the movable rod 13 controls the convex block 14 to move under the action of the matched spring 12, the convex block 14 enters the inside of the notch 16 to form a closed state, and friction force is improved by increasing the contact area between the convex block 14 and the notch 16, so that stability of the fixed rod 10 is further improved;

the stability of the valve rod 6 is further improved by arranging the elastic ring 8 and the steel ring 9, when the valve rod 6 is subjected to the action of fluid force, the valve rod 6 transmits the received force to the elastic ring 8, and the elastic ring 8 buffers under the action of the elastic force of the steel ring 9, so that deformation caused by extrusion between the valve rod 6 and the fixed seat 4 is avoided.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A safety valve for preventing deflection of a valve rod, comprising a valve body (1), characterized in that: the upper side of valve body (1) rotates and is connected with fixing base (4), the inside threaded connection of fixing base (4) has valve rod (6), the fixed surface of valve rod (6) is connected with shutoff dish (7), shutoff dish (7) are located the upside of the inside intercommunication mouth of valve body (1), the downside of shutoff dish (7) is in the surperficial downside fixedly connected with dead lever (10) of valve rod (6), a plurality of notches (16) have been seted up to the surperficial downside of dead lever (10).

2. A safety valve for preventing deflection of a valve stem as defined in claim 1, wherein: the utility model discloses a valve body, including valve body (1) and fixed rod (10), the downside of dead lever (10) is fixed in the inside of valve body (1) has seted up perpendicular groove (15), the dead lever (10) activity is in the inside of perpendicular groove (15), all fixedly seted up a plurality of transverse grooves (11) in the inside of valve body (1) in the left and right sides of perpendicular groove (15), the inside sliding connection of transverse grooves (11) has movable rod (13), the surface cover of movable rod (13) is equipped with cooperation spring (12), the surface sliding connection of notch (16) has lug (14), lug (14) and movable rod (13) fixed connection.

3. A safety valve for preventing deflection of a valve stem as defined in claim 2, wherein: the upper end face of fixing base (4) fixedly connected with connecting rod (3), the up end fixedly connected with rolling disc (2) of connecting rod (3).

4. A safety valve for preventing deflection of a valve stem as set forth in claim 3, wherein: the upper side of shutoff dish (7) is in the surface swing joint of valve rod (6) have steel ring (9), the fixed surface of steel ring (9) is connected with elastic ring (8), the inside fixed connection of elastic ring (8) and valve body (1), the thickness of elastic ring (8) is greater than the thickness of steel ring (9).

5. A safety valve for preventing deflection of a valve stem as defined in claim 4, wherein: the sealing ring is arranged at the joint of the sealing disc (7) and the valve body (1).

6. A safety valve for preventing deflection of a valve stem as defined in claim 5, wherein: the connecting rod (3), the fixing seat (4), the steel ring (9), the valve rod (6), the plugging disc (7) and the fixing rod (10) are all coaxially arranged.