NL2025418B1

NL2025418B1 - Well-sealed Spring Return Ball Valve

Info

Publication number: NL2025418B1
Application number: NL2025418A
Authority: NL
Inventors: Tang Zhongbo
Original assignee: Shanghai Shengtang Valve Tech Co Ltd
Priority date: 2020-03-12
Filing date: 2020-04-24
Publication date: 2020-12-23
Also published as: ZA202002639B; CN113389926A; BE1027606B1; LU101737B1

Abstract

The invention discloses a well-sealed spring return ball valve, comprising a valve body, wherein, a ﬂange is arranged at one end of the valve body, a return spring and a push handle are arranged on 5 the valve body, threads are formed on the ﬂange, limiting grooves are formed in the valve body, gear plates are arranged in the limiting grooves, the gear plates are engaged with gears, rotating rods are ﬁxed at the upper end of the gears, rolling handles are ﬁxed at the upper end of the rotating rods passing through the valve body, limiting plates are ﬁxed at the lower end of the gear plates on one side, and expansion plates are ﬁxed at the lower end of the limiting grooves. The invention has the 10 following beneﬁcial effects: The gears are driven through the rolling handles and the rotating rods and then drive the gear plates which further drive the limiting plates, which can effectively prevent water from ﬂowing into the threaded connection of the ﬂange when water in the pipeline passes through the ﬂange connection, thereby providing a better sealing property for the spring return ball valve, the slipping heads can facilitate adaptation in connection with the ﬂange and the pipeline, 15 and the expansion plates and springs can protect the limiting grooves against the impact force of hydraulic pressure in the pipeline.

Description

Well-sealed Spring Return Ball Valve Technical Field The invention relates to a spring return ball valve, in particular to a well-sealed spring return ball valve, which belongs to the technical field of spring return ball valve.

Background Medium circulation can be connected by rotating the spring ball valve by an angle of only 90° with a small torque, and rebound and return automatically under the action of the spring after the handle of the ball valve is released.

The current spring return ball valve often does not have a very good sealing property when a water pipe is connected. Experienced master workers will wrap with a laver of waterproof adhesive tape the threads on the flange at the connection between the ball valve and the pipeline before connecting the pipeline connecting end to prevent water from overflow. However, the waterproof adhesive tape may gradually become thin due to aging and corrosion when used for a long time, so the sealing property of the pipeline becomes worse. Additionally, the waterproof adhesive tape will flow out with the water in the pipeline, and the water quality is affected.

Summary of the Invention The invention provides a well-sealed spring return ball valve to solve the problem that the spring return ball valve often does not have a very good sealing property when a water pipe is connected.

Experienced master workers will wrap with a layer of waterproof adhesive tape the threads on the flange at the connection between the ball valve and the pipeline before connecting the pipeline connecting end to prevent water from overflow. However, the waterproof adhesive tape may gradually become thin due to aging and corrosion when used for a long time, so the sealing property of the pipeline becomes worse. Additionally, the waterproof adhesive tape will flow out with the water in the pipeline, and the water quality is affected.

To solve the above-mentioned technical problems. the invention provides the following technical solution: The invention provides a well-sealed spring return ball valve, comprising a valve body, wherein, a flange 1s arranged at one end of the valve body, a return spring and a push handle are arranged on the valve body, threads are formed on the flange, limiting grooves are formed in the valve body, gear plates are arranged in the limiting grooves, the gear plates are engaged with gears, rotating rods are fixed at the upper end of the gears, rolling handles are fixed at the upper end of the rotating rods passing through the valve body, limiting plates are fixed at the lower end of the gear plates on one side, expansion plates are fixed at the lower end of the limiting grooves, and springs are fixed inside the expansion plates . As a preferred technical solution of the invention, antislip stripes are formed on the rolling handles. As a preferred technical solution of the invention, the limiting plates are arc-shaped, and slipping heads are arranged at one end of the limiting plates away from the gear plates. As a preferred technical solution of the invention, there are four limiting plates and four limiting grooves, and several of the limiting plates adapt to each other. As a preferred technical solution of the invention, sealing sleeves are fixed at the connections between the rotating rods and the valve body. As a preferred technical solution of the invention, spacer blocks are fixed at the end of the expansion plates close to the limiting plates. The invention has the following beneficial effects:

1. The gears are driven through the rolling handles and the rotating rods provided and then drive the gear plates which further drive the limiting plates, which can effectively prevent water from flowing into the threaded connection of the flange when water in the pipeline passes through the flange connection, thereby providing a better sealing property for the spring return ball valve.

2. The slipping heads can facilitate adaptation in connection with the flange and the pipeline, and the expansion plates and springs can protect the limiting grooves against the impact force of hydraulic pressure in the pipeline. Brief Description of the Drawings The drawings, used for providing a further understanding of the invention and constituting a part of specification, illustrate the invention together with the embodiment(s) of the invention, not constituting a limitation on the invention. In the drawings: FIG. 1 is the structural view of the invention; FIG. 2 is the side sectional view of the valve body of the invention; FIG. 3 is the enlarged view of Point A of the invention. Notation in the figures: 1. valve body; 2. flange; 3. return spring; 4. push handle; 5. thread; 6. rotating rod; 7. sealing sleeve; 8. limiting groove; 9. gear; 10. gear plate; 11. limiting plate; 12. slipping head: 13. expansion plate; 14. spring; 15. spacer block; 16. rolling handle; 17. antislip stripe. Detailed Description of the Preferred Embodiments The technical solution in the embodiments of the invention is described clearly and completely below in combination with the drawings in the embodiments of the invention.

Obviously, the embodiments described are only a part but not the whole of the embodiments of the invention. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without any creative work are within the protection scope of the invention. Embodiment: As shown in FIG. 1-3, the invention provides a well-sealed spring return ball valve, comprising a valve body 1, wherein, a flange 2 is arranged at one end of the valve body 1, a return spring 3 and a push handle 4 are arranged on the valve body 1, threads 5 are formed on the flange 2. the threads 5 facilitate fixed connection with a pipeline, limiting grooves 8 are formed in the valve body 1, gear plates 10 are arranged in the limiting grooves 8, the limiting grooves 8 play a protective role, the gear plates 10 are engaged with gears 9, rotating rods 6 are fixed at the upper end of the gears 9, rolling handles 16 are fixed at the upper end of the rotating rods 6 passing through the valve body 1, the gears 9 can be driven to rotate through rotation of the rolling handles 16, limiting plates 11 are fixed at the lower end of the gear plates 10 on one side, expansion plates 13 are fixed at the lower end of the limiting grooves 8, springs 14 are fixed inside the expansion plates 13. and the springs 14 can drive the recovery of the expansion plates 13.

There are four limiting plates 11 and four limiting grooves 8, several of the limiting plates 11 adapt to each other to provide a good sealing property, antislip stripes 17 are formed on the rolling handles 16 to facilitate rotation of the rolling handles 16, spacer blocks 15 are fixed at the end of the expansion plates 13 close to the limiting plates 11, the spacer blocks 15 play a protective role to avoid damage due to friction, sealing sleeves 7 are fixed at the connections between the rotating rods 6 and the valve body 1, the sealing sleeves 7 have the effect of sealed connection, the limiting plates 11 are arc-shaped, slipping heads 12 are arranged at one end of the limiting plates 11 away from the gear plates 10, and the slipping heads 12 make contact more adaptive to avoid wear.

Specifically, the pipeline is in threaded connection with the flange 2 at one end of the valve body 1, and a plurality of rotating plates 16 can be rotated after connection. The rolling handles drive the rotating rods 6, so that the gears 9 at the lower end drive the gear plates 10 engaged to rotate. The gear plates 10 rotate and drive the limiting plates 11 at the lower end to rotate, so that a plurality of limiting plates 11 adapt to each other and come into contact with each other, and come into contact with the connection through the slipping heads 12. The gears 9 are driven through the rolling handles 16 and the rotating rods 6 and then drive the gear plates 10 which further drive the limiting plates 11, which can effectively prevent water from flowing into the threaded connection of the flange 2 when in the pipeline passes through the connection of the flange 2, thereby providing a better sealing property for the spring return ball valve. The slipping heads 12 can facilitate adaptation in connection with the flange 2 and the pipeline, and the expansion plates 13 and springs 14 can protect the limiting grooves 8 against the impact force of hydraulic pressure in the pipeline.

Though the embodiments of the invention are given and described, those skilled in the art may understand that various changes, modifications, substitutions and variations of these embodiments are permitted under the conditions of not deviating from the principles and spirits of the invention, and the scope of the invention is defined by the claims attached and their equivalents.

Claims

Conclusions

A well-sealed spring return ball valve, characterized in that it comprises a valve body (1), a flange (2) being arranged on one side of the valve body (1), a return spring (3) and a push handle (4). arranged on the valve body (1), threads (5) are formed on the flange (2), limiting grooves (8) are formed in the valve body (1), gear plates (10) are arranged in the limiting grooves (8), the gear plates ( 10) engage gears (9).

rotating rods (6) are mounted on the top of the gears (9), rolling handles (16) are mounted on the top of the rotating rods (6) passing through the valve body (1), limiting plates (11) are mounted on the bottom of the gear plates (10) on one side, expansion plates (13) are provided on the bottom of the limiting grooves (8). and springs (14) are disposed in the limiting plates (13).

A well-sealed spring return ball valve according to claim 1, characterized in that anti-slip stripes (17) are formed on the rolling handles (16).

The well-sealed spring return ball valve according to claim 1, characterized in that the limiting plates (11) are arcuate, and sliding heads (12) are arranged at one end of the limiting plates (11) away from the gear plates (10).

Well-sealed spring return ball valve according to claim 1, characterized in that there are four limiting plates (11) and four limiting grooves (8), and several limiting plates are matched to each other.

The well-sealed spring return ball valve according to claim 1, characterized in that sealing collars (7) are provided at the joints between the rotating rods (6) and the valve body (1); intermediate blocks (15) are arranged at the end of the expansion plates (13) close to the boundary plates (11).