CN221323303U - Leakage-proof stop valve - Google Patents

Abstract

The utility model discloses a leakage-proof stop valve, which relates to the technical field of stop valves and comprises a valve seat and two valve pipes which are connected in a penetrating way, wherein a protection box is connected between the valve seat and the valve pipes in a penetrating way, the same magnetic suction pipe is connected between the protection box and the valve seat in a penetrating way, two sealing covers are rotatably arranged on two sides of the magnetic suction pipe and are elastically connected with the magnetic suction pipe, a pressure sensor is arranged at the top of the protection box, a pressure reducing valve is arranged on the protection box, an electromagnet is sleeved on the inner side of the magnetic suction pipe, and a side door is rotatably connected on one side of the magnetic suction pipe. The valve seat and valve tube protection box is reasonable in structure, pressure regulation of fluid in the stop valve is facilitated through the use of the valve seat and valve tube protection box, electromagnetic interception of the valve seat is facilitated through rotation regulation of the electromagnet and the sealing cover, rapid interception of the stop valve is achieved, the protection structure in the stop valve is increased, the use effect of the stop valve is improved, and the valve seat and valve tube protection box is practical.

Description

A leak-proof stop valve

Technical Field

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

Background technique

The globe valve, also called the stop valve, is one of the most widely used valves. It is popular because of the small friction between the sealing surfaces during opening and closing, the durability, the small opening height, the easy manufacturing and maintenance, and it is suitable not only for medium and low pressure, but also for high pressure. The closing principle of the globe valve is to rely on the valve stem pressure to make the valve disc sealing surface fit closely with the valve seat sealing surface to prevent the flow of the medium.

At present, in order to avoid leakage of internal fluid, a removable sealing ring is provided inside the valve body of the stop valve, so that the sealing ring can be replaced in time, saving the maintenance cost of the valve disc.

For example, a Chinese patent with publication number CN219345535U discloses a leakage-proof stop valve, which relates to the technical field of stop valves. Through the provision of an elastic sealing ring, when the lower end of the valve disc closes the through hole on the valve seat under the pressure of the valve stem, a flexible seal is achieved between the valve disc and the inclined surface of the valve seat, which greatly reduces the mutual wear between the valve disc and the valve seat. At the same time, the deformation hole increases the deformation degree of the elastic sealing ring, making it easier for the elastic sealing ring to fit with the inner wall of the through hole of the valve seat. When the inner wall of the through hole of the valve seat is worn by the conveying medium, the elastic sealing ring can still achieve a good sealing effect under the action of pressure, and the elastic sealing ring can be replaced in time when it is worn. Compared with replacing the entire valve disc, the maintenance cost is greatly reduced, thereby reducing the maintenance cost of the stop valve while achieving a good leakage-proof effect. At the same time, the reinforcing ribs enhance the structural strength at the edge of the valve disc, so that the valve disc is not easy to deform, thereby avoiding medium leakage.

Although the above-mentioned stop valve has a valve disc replacement structure, it does not have a flow cutoff protection structure, and the sealing effect at the end of the valve body is poor. It cannot be used for high-pressure fluid cutoff and has poor use effect. Therefore, the present application provides a leakage-proof stop valve to meet the needs.

Utility Model Content

The purpose of the present application is to provide a leakage-proof stop valve, to solve the problem that the stop valve does not have a cut-off protection structure and cannot cut off the high-pressure fluid, to achieve rapid cut-off of the stop valve, and to increase the protection structure inside the stop valve.

To achieve the above-mentioned objectives, the present application provides the following technical solutions: a leakage-proof stop valve, comprising a valve seat and two valve tubes that are connected through each other, a protective box being connected through each other between the valve seat and the valve tube, a same magnetic tube being connected through each other between the protective box and the valve seat, two sealing covers being rotatably provided on both sides of the magnetic tube, and the sealing covers being elastically connected to the magnetic tube, a pressure sensor being provided on the top of the protective box, and a pressure reducing valve being provided on the protective box.

Preferably, an electromagnet is sleeved on the inner side of the magnetic suction tube, a through rod is fixedly connected in the middle of the electromagnet, and the through rod is fixedly connected to the sealing cover through a traction strip.

Preferably, a spring is provided in the middle of the traction strip, and rubber blocks are fixedly connected to both ends of the traction strip, and the rubber blocks are fixedly connected to the through rod and the cover respectively.

Preferably, the sealing cover is a semicircular plate-shaped structure, and the diameter ends of the two sealing covers are relatively distributed.

Preferably, the two sealing covers are both located inside the protective box, the diameter of the sealing covers is larger than the diameter of the magnetic suction tube, and the sealing covers are made of magnetic suction material.

Preferably, one side of the magnetic suction tube is rotatably connected to a side door, a controller is provided on the top of the protective box, and a sliding resistor and is provided on the controller.

Preferably, a sealing plug is elastically connected to the top of the pressure reducing valve, and the pressure sensor and the pressure reducing valve are both electrically connected to a controller.

In summary, the technical effects and advantages of the utility model are:

1. The utility model has a reasonable structure. Through the provision of a protective box, a magnetic suction tube, a sealing cover and a traction strip, it is convenient to increase the electromagnetic shutoff structure inside the stop valve, perform protective treatment on both sides of the valve seat, improve the sealing convenience of the valve disc in the valve seat, increase the shutoff firmness and airtightness of the stop valve, and adjust the magnetism of the electromagnet in the magnetic suction tube through a sliding resistor, so as to facilitate the adjustment of the connection angle between the sealing cover and the magnetic suction tube, quickly adjust the fluid speed, realize the regulation and shutoff of the fluid pressure, perform protective treatment on the stop valve, and improve the use effect of the stop valve.

2. In the utility model, by setting up the pressure sensor, pressure reducing valve and controller, it is convenient to add the pressure detection structure on both sides of the valve seat, which can flexibly grasp the pressure of the fluid, carry out the pressure reduction treatment of the high-pressure fluid, avoid the leakage of the valve body, improve the shut-off strength of the stop valve, solve the problems of poor sealing of the stop valve and poor high-pressure shut-off effect, improve the use effect of the stop valve, and have practicality.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of the overall structure of a leak-proof stop valve;

FIG2 is a partial structural cross-sectional view of a valve tube and a protection box in a leak-proof stop valve;

FIG3 is a partial structural cross-sectional view of a protection box and a valve tube in a leak-proof stop valve;

FIG4 is a schematic diagram of a partial structure of a valve tube in a leak-proof stop valve;

FIG. 5 is a schematic diagram of a partial structure of a protection box in a leak-proof stop valve.

In the figure: 1. valve seat; 2. valve tube; 3. protection box; 4. side door; 5. magnetic suction tube; 6. sealing cover; 7. traction strip; 8. pressure sensor; 9. pressure reducing valve; 10. controller; 11. electromagnet; 12. through rod; 13. spring; 14. rotating shaft; 15. sealing plug; 16. sliding resistor; 17, display screen;.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Embodiment: Referring to Figures 1-5, a leakage-proof stop valve is shown, comprising a through-connected valve seat 1 and two valve tubes 2, a protective box 3 is through-connected between the valve seat 1 and the valve tube 2, a same magnetic tube 5 is through-connected between the protective box 3 and the valve seat 1, two sealing covers 6 are rotatably provided on both sides of the magnetic tube 5, and the sealing covers 6 are elastically connected to the magnetic tube 5, a pressure sensor 8 is provided on the top of the protective box 3, and a pressure reducing valve 9 is provided on the protective box 3. The valve seat 1 and valve tube 2 in this embodiment are both existing structures of the stop valve, wherein a valve stem is provided on the top of the valve seat 1, and a valve disc is provided at the bottom of the valve stem inside the valve seat 1, and the valve disc is rotatably adjusted by the valve stem so that it can be used for the shutoff treatment of the flowing medium in the two valve tubes 2.

An electromagnet 11 is sleeved on the inner side of the magnetic suction tube 5, and a through rod 12 is fixedly connected in the middle of the electromagnet 11. The through rod 12 is fixedly connected to the cover 6 through the traction bar 7. The electromagnet 11 is used to increase the electromagnetic adsorption structure on the magnetic suction tube 5. The through rod 12 elastically connects the traction bar 7 and the cover 6, which is convenient for elastic traction of the cover 6 and opening of the two covers 6.

A spring 13 is provided in the middle of the traction strip 7, and rubber blocks are fixedly connected to both ends of the traction strip 7, and the rubber blocks are respectively fixedly connected to the through rod 12 and the cover 6. Through the elastic characteristics of the spring 13 and the use of rubber blocks at both ends of the traction strip 7, it is convenient for the traction strip 7 to support the cover 6. When the cover 6 is fitted with the magnetic suction tube 5, the traction strip 7 is bent and stored, so that the cover 6 seals the magnetic suction tube 5.

The sealing cover 6 is a semicircular plate structure, and the diameter ends of the two sealing covers 6 are relatively distributed. Through the magnetic attraction and fit between the two sealing covers 6 and the magnetic suction tube 5, the sealing cover 6 can seal the magnetic suction tube 5, thereby realizing the pre-interception of the fluid in the valve seat 1, and can intercept and protect the fluid in the valve tube 2, thereby increasing the cut-off strength of the stop valve.

Both covers 6 are located inside the protective box 3. The diameter of the covers 6 is larger than the diameter of the magnetic tube 5. The covers 6 are made of magnetic material and are magnetic through the connection of the electromagnet 11 to an external power supply. The covers 6 can be magnetically connected to the covers 6 to close the magnetic tube 5, which is convenient for intercepting the valve seat 1 and increasing the convenience of intercepting the fluid in the valve seat 1.

One side of the magnetic suction tube 5 is rotatably connected to the side door 4, and a controller 10 is arranged on the top of the protection box 3. The controller 10 is provided with sliding resistors 16 and 17. The side door 4 is used to conveniently open the opening port of the protection box 3, and the maintenance and replacement of the components in the protection box 3 are convenient. The sliding resistor 16 is used to conveniently adjust and control the electromagnetic size of the electromagnet 11 in the magnetic suction tube 5, adjust the connection angle between the cover 6 and the magnetic suction tube 5, realize the slow closing of the magnetic suction tube 5, and adjust the pressure of the fluid in the valve seat 1.

A sealing plug 15 is elastically connected to the top of the pressure reducing valve 9. The pressure sensor 8 and the pressure reducing valve 9 are both electrically connected to the controller 10. By applying existing liquid pressure detection technology and pressure reducing technology, the pressure sensor 8 can detect the pressure in the protective box 3. When the detected pressure is too high, the pressure in the protective box 3 can be adjusted through the sealing plug 15.

How this utility works:

When in use, the fluid in the stop valve can be transported by flowing through the valve tube 2 and the protective box 3. During the fluid transportation process, the magnetic suction tube 5 is opened through the support between the traction bar 7 and the through rod 12 and the cover 6, and the fluid can enter the interior of the valve seat 1 through the magnetic suction tube 5. The real-time detection of the fluid by the pressure sensor 8 in the protective box 3 is convenient for external personnel to obtain the fluid pressure. The size of the magnetic force of the electromagnet 11 is adjusted by the sliding resistor 16 in the controller 10, so that the electromagnet 11 can be magnetically connected with the cover 6. The cover 6 rotates toward the magnetic suction tube 5 through the rotating shaft 14, reducing the opening area of the magnetic suction tube 5, thereby increasing the pressure of the output fluid and improving the flow. The conveying speed of the fluid is improved, and the conveying efficiency of the stop valve is improved. When the pressure of the conveyed fluid is too high, the pressure reducing valve 9 can be used to reduce the pressure inside the valve seat 1 and the valve tube 2 to reduce the pressure of the fluid, avoid damage to the stop valve, and increase its service life. During use, when the screw on the valve seat 1 is sealed by the valve disc, the electromagnet 11 in the input end protection box 3 can be opened, and the magnetic adsorption of the electromagnet 11 and the sealing cover 6 can be used to seal the magnetic suction tube 5 to cut off the fluid. Finally, the valve disc is sealed by the rotation of the screw, thereby increasing the cut-off protection structure of the stop valve, improving the cut-off sealing of the stop valve, and improving the use effect of the stop valve, which is practical.

Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a stop valve of leak protection, includes disk seat (1) and two valve pipes (2) that link up, its characterized in that: the novel magnetic valve is characterized in that a protection box (3) is connected between the valve seat (1) and the valve pipe (2) in a penetrating manner, one magnetic suction pipe (5) is connected between the protection box (3) and the valve seat (1) in a penetrating manner, two sealing covers (6) are rotatably arranged on two sides of the magnetic suction pipe (5), the sealing covers (6) are elastically connected with the magnetic suction pipe (5), a pressure sensor (8) is arranged at the top of the protection box (3), and a pressure reducing valve (9) is arranged on the protection box (3).

2. A leak-proof shut-off valve as defined in claim 1, wherein: the inner side of the magnetic suction pipe (5) is sleeved with an electromagnet (11), the middle of the electromagnet (11) is fixedly connected with a penetrating rod (12), and the penetrating rod (12) is fixedly connected with the sealing cover (6) through a traction strip (7).

3. A leak-proof shut-off valve as defined in claim 2, wherein: the middle part of traction strip (7) is provided with spring (13), both ends of traction strip (7) all rigid coupling have the rubber piece, and the rubber piece respectively with run through pole (12) and closing cap (6) fixed connection.

4. A leak-proof shut-off valve as defined in claim 1, wherein: the sealing covers (6) are of semicircular plate-shaped structures, and the diameter ends of the two sealing covers (6) are distributed relatively.

5. A leak-proof shut-off valve as defined in claim 1, wherein: the two sealing covers (6) are both positioned in the protective box (3), the diameter of each sealing cover (6) is larger than that of the magnetic suction pipe (5), and each sealing cover (6) is made of a magnetic suction material.

6. A leak-proof shut-off valve as defined in claim 1, wherein: one side of the magnetic suction pipe (5) is rotatably connected with a side door (4), a controller (10) is arranged at the top of the protection box (3), and sliding resistors (16) and (17) are arranged on the controller (10).

7. A leak-proof shut-off valve as defined in claim 6, wherein: the top of relief pressure valve (9) elastic connection has sealing plug (15), pressure sensor (8) and relief pressure valve (9) are all connected with controller (10) electricity.