CN220488294U - High-temperature stop valve - Google Patents

Abstract

The utility model discloses a high-temperature stop valve, which comprises a stop valve main body, wherein a baffle is arranged at the middle position inside the stop valve main body, a valve cover is arranged at the top of the stop valve main body, an internal thread sleeve is arranged at the middle position inside the valve cover, a valve rod handle is rotatably arranged at the top outside the internal thread sleeve, clamping rods are slidably arranged inside the valve rod handle, clamping grooves are formed in two sides of the top of the internal thread sleeve, and the internal thread of the internal thread sleeve is connected with a valve rod. According to the device, the four groups of extrusion plates are arranged in the sealing plug, when the outer side of the sealing plug is worn, the driving plate and the extrusion rod are matched, so that the extrusion plates can be pressed to extrude the sealing plug to expand outwards, the sealing plug is tightly extruded with the side wall of the water outlet, and the sealing effect is improved.

Description

High-temperature stop valve

Technical Field

The utility model relates to the technical field of stop valves, in particular to a high-temperature stop valve.

Background

The structure of the stop valve comprises a valve body, a valve seat, a valve clack, a valve rod, a valve cover, a bracket and a hand wheel, wherein the hand wheel rotates to drive the valve rod to move up and down through a valve rod nut, so that the opening and closing operation of the valve clack is realized. In a thermal system of thermal power generation, a high-temperature high-pressure stop valve is an important component of the thermal system. All thermodynamic devices are connected by valves and pipes to form a system. Therefore, the valve and the pipeline, especially the high temperature and high pressure stop valve, have the advantages and disadvantages of the technical level and the product quality, and directly influence the safe, reliable and economic operation of the thermal generator set.

However, there are certain disadvantages in using a shut-off valve:

1. when the stop valve is started and closed for a long time, friction occurs between the sealing plug and the water inlet, and the friction can lead to abrasion of the outer side of the sealing plug, so that the sealing effect of the sealing plug is reduced or even leakage occurs;

2. meanwhile, when the stop valve is used, the valve rod is directly exposed to the outside, accidental opening of the valve rod is easy to occur, and leakage of medium in the stop valve is caused.

Disclosure of Invention

The present utility model is directed to a high temperature stop valve to solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high temperature stop valve, includes the stop valve main part, the inside intermediate position department of stop valve main part is provided with the baffle, the top of stop valve main part is provided with the valve gap, the inside intermediate position department of valve gap is provided with the internal thread sleeve pipe, the top in the internal thread sleeve pipe outside rotates and is provided with the valve stem handle, the inside slip of valve stem handle is provided with the draw-in lever, the both sides at internal thread sleeve pipe top are provided with the draw-in groove, the inside threaded connection of internal thread sleeve pipe has the valve rod, the bottom in the valve rod outside is provided with the sealing plug, the bottom evenly slides of the inside side of valve rod is provided with four sets of squeeze bars, four sets of one side that the centre of a circle was kept away from to the squeeze bar is provided with the stripper plate, the top of valve rod both sides is provided with fixed subassembly, the inside rotation of valve rod is provided with the axis of rotation, the bottom of axis of rotation is provided with the drive plate, the outside of axis of rotation is provided with the gear.

Preferably, the fixed component comprises a spring, a slide bar and a rack, wherein the slide bar is positioned at the top of one side of the valve rod, and the rack and the spring are slidably arranged on the outer side of the slide bar.

Preferably, both sides of the spring are fixedly connected with the valve rod and the rack respectively.

Preferably, the clamping rod is located in the valve rod handle and slides, and the clamping rod is mutually matched with the clamping groove.

Preferably, the driving plate is located between four groups of extrusion rods, and one side of each extrusion rod extends out of the valve rod.

Preferably, the extrusion plate is located at the outer side of the valve rod, and the extrusion plate is arc-shaped.

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

1. through being provided with four groups of stripper plates in the inside of sealing plug, when wearing and tearing appear in the outside of sealing plug, can apply pressure to the stripper plate through drive plate and extrusion rod cooperation this moment and extrude outside expansion to the sealing plug for sealing plug and the lateral wall of delivery port extrude tightly, improve sealed effect.

2. When the stop valve is not needed to be used, the clamping rod can be pulled out from the clamping groove, connection between the valve rod handle and the internal thread sleeve can be released, the valve rod handle and the internal thread sleeve are in a mutually sliding state, misoperation of the valve rod handle is prevented, and leakage of medium in the stop valve is caused.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure A of FIG. 1 according to the present utility model;

FIG. 3 is a top view of the drive plate of the present utility model;

FIG. 4 is an enlarged schematic view of the structure at B of FIG. 1 according to the present utility model

Fig. 5 is an enlarged schematic view of the structure at C of fig. 1 according to the present utility model.

In the figure: 1. a shutoff valve body; 2. a baffle; 3. a valve cover; 4. a rotating shaft; 5. an internally threaded sleeve; 6. a valve stem; 7. a clamping groove; 8. a clamping rod; 9. a valve stem; 10. a spring; 11. a slide bar; 12. a rack; 13. a gear; 14. a driving plate; 15. a sealing plug; 16. an extrusion rod; 17. and extruding the plate.

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. 1-5, embodiments of the present utility model are provided: the utility model provides a high temperature stop valve, including stop valve main part 1, the inside intermediate position department of stop valve main part 1 is provided with baffle 2, the top of stop valve main part 1 is provided with valve gap 3, the inside intermediate position department of valve gap 3 is provided with internal thread sleeve pipe 5, the top rotation in the internal thread sleeve pipe 5 outside is provided with valve stem handle 9, the inside slip of valve stem handle 9 is provided with draw-in lever 8, the both sides at internal thread sleeve pipe 5 top are provided with draw-in groove 7, the inside threaded connection of internal thread sleeve pipe 5 has valve rod 6, the bottom in the valve rod 6 outside is provided with sealing plug 15, the bottom evenly slides in the inside side of valve rod 6 is provided with four sets of squeeze bars 16, one side that the centre of a circle was kept away from to four sets of squeeze bars 16 is provided with squeeze plate 17, the top of valve rod 6 both sides is provided with fixed subassembly, the inside rotation of valve rod 6 is provided with axis of rotation 4, the bottom of axis of rotation 4 is provided with drive plate 14, the outside of axis of rotation 4 is provided with gear 13.

Further, the fixing component comprises a spring 10, a sliding rod 11 and a rack 12, the sliding rod 11 is positioned at the top of one side of the valve rod 6, the rack 12 and the spring 10 are slidably arranged on the outer side of the sliding rod 11, and the rotating shaft 14 can be fixed through the cooperation of the gear 13.

Further, both sides of the spring 10 are fixedly connected with the valve rod 6 and the rack 12, respectively, so that the rack 12 can be automatically reset.

Further, the clamping rod 8 is located in the valve rod handle 9 to slide, the clamping rod 8 and the clamping groove 7 are mutually matched, and the valve rod handle 9 and the internal thread sleeve 5 can be fixed through the clamping rod 8.

Further, the driving plate 14 is located between the four sets of squeeze rods 16, and one side of the squeeze rods 16 extends out of the interior of the valve stem 6 while squeezing the four sets of squeeze rods 16.

Further, the extrusion plate 17 is located on the outer side of the valve rod 6, the extrusion plate 17 is arc-shaped, the contact area between the extrusion plate 17 and the piston 15 is larger, and the sealing effect is improved.

Working principle: firstly, when the stop valve needs to be opened or closed, the clamping rod 8 is pulled upwards at the moment, one end of the clamping rod 8 is rotated to the position above the clamping groove 7 and then is pressed downwards, so that the valve rod handle 9 and the internal thread sleeve 5 are fixedly connected with each other, at the moment, the internal thread sleeve 5 can be rotated through the valve rod handle 9, and the valve rod 6 can be driven to rotate through threads of the internal thread sleeve 5 to move up and down.

When the stop valve of using for a long time, certain wearing and tearing can appear in sealing plug 15, can draw rack 12 and keep away from each other this moment, and rotatory axis of rotation 4 drives drive board 14 rotatory this moment, and the limit of drive board 14 promotes extrusion pole 16 for extrusion pole 16 promotes the lateral wall contact and the extrusion of extrusion board 17 and sealing plug 15, makes sealing plug 15 produce deformation, makes sealing plug 15 and the inseparabler of the lateral wall connection of delivery port.

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.

Claims (6)

1. High temperature stop valve, including stop valve main part (1), its characterized in that: the utility model discloses a stop valve, including stop valve main part (1), valve gap (3), valve rod handle (9), clamping rod (8), clamping groove (7) are provided on both sides at the inside intermediate position department of stop valve main part (1), stop valve main part (1) top is provided with valve gap (3), valve gap (3) inside intermediate position department is provided with internal thread sleeve (5), the top rotation in the internal thread sleeve (5) outside is provided with valve rod handle (9), the inside slip of valve rod handle (9) is provided with clamping rod (8), the both sides at internal thread sleeve (5) top are provided with draw-in groove (7), the internal thread connection of internal thread sleeve (5) has valve rod (6), the bottom in the outside of valve rod (6) is provided with sealing plug (15), the bottom evenly sliding of the inside side of valve rod (6) is provided with four sets of squeeze rod (16), and one side that the centre of a circle was kept away from to squeeze rod (16) is provided with squeeze plate (17), the top of valve rod (6) both sides is provided with fixed subassembly, the inside rotation of valve rod (6) is provided with axis of rotation (4), the bottom of axis (4) is provided with driving plate (14), the outside of axis (4) is provided with gear (13).

2. A high temperature shut-off valve as defined in claim 1 wherein: the fixed component comprises a spring (10), a sliding rod (11) and a rack (12), wherein the sliding rod (11) is positioned at the top of one side of the valve rod (6), and the rack (12) and the spring (10) are slidably arranged on the outer side of the sliding rod (11).

3. A high temperature shut-off valve as defined in claim 2 wherein: the two sides of the spring (10) are fixedly connected with the valve rod (6) and the rack (12) respectively.

4. A high temperature shut-off valve as defined in claim 1 wherein: the clamping rod (8) is located in the valve rod handle (9) to slide, and the clamping rod (8) is matched with the clamping groove (7).

5. A high temperature shut-off valve as defined in claim 1 wherein: the driving plate (14) is positioned among four groups of extrusion rods (16), and one side of each extrusion rod (16) extends out of the valve rod (6).

6. A high temperature shut-off valve as defined in claim 1 wherein: the extrusion plate (17) is positioned at the outer side of the valve rod (6), and the extrusion plate (17) is arc-shaped.