CN-224214746-U - Bidirectional flow hard sealing metal ball valve

Abstract

The utility model relates to the field of valve production, in particular to a bidirectional flow hard seal metal ball valve, which comprises a valve body and a mounting ring, wherein two symmetrical valve seats are arranged in the valve body, a plurality of sleeves are fixedly connected to the outer wall of each valve seat, a telescopic rod is arranged in each sleeve, one end of each telescopic rod is fixedly connected with the mounting ring, two grooves are formed in each mounting ring, a moving rod is arranged in each groove, and one end of each moving rod is correspondingly connected with a first scraping ring and a second scraping ring respectively. The device utilizes the stepped collaborative cleaning structure of three scraping rings with different sections and the rigid-flexible combined scraping design, realizes the grading efficient cleaning of impurities with different sizes and the effect of avoiding the abrasion of the ball body while ensuring the cleaning force, solves the problems that the prior device lacks a multistage impurity cleaning system and the rigid-flexible balanced scraping structure, and remarkably improves the sealing reliability and the service life of the valve.

Inventors

• HUANG JIANYONG
• FAN CHENGDONG
• ZHENG ZHANXIN

Assignees

• 浙江上业阀门科技有限公司

Dates

Publication Date

20260508

Application Date

20250624

Claims (7)

1. 1. A bidirectional flow hard seal metal ball valve comprises a valve body (6) and a mounting ring (9) and is characterized in that two symmetrical valve seats (7) are arranged in the valve body (6), a plurality of sleeves (15) are fixedly connected to the outer wall of each valve seat (7), a telescopic rod (17) is arranged in each sleeve (15), one end of each telescopic rod (17) is fixedly connected with the mounting ring (9), two grooves (12) are formed in each mounting ring (9), a movable rod (10) is arranged in each groove (12), and one end of each movable rod (10) is correspondingly connected with a first scraping ring (13) and a second scraping ring (18) respectively.
2. 2. The bidirectional flow hard sealing metal ball valve according to claim 1, wherein a plurality of first springs (11) are fixedly connected to the outer walls of one sides of the first scraping ring (13) and the second scraping ring (18), the other ends of the first springs (11) are fixedly connected with the mounting ring (9), one ends of the sleeves (15) are fixedly connected with one ends of the second springs (16), and the other ends of the second springs (16) are fixedly connected with the outer wall of the mounting ring (9).
3. 3. The bidirectional flow hard sealing metal ball valve according to claim 2, wherein the outer wall of the mounting ring (9) is fixedly connected with a plurality of fixing rods (14), and one end of each fixing rod (14) is fixedly connected with a third scraping ring (19).
4. 4. The bidirectional flow hard sealing metal ball valve according to claim 1, wherein a ball body (8) is arranged in the valve body (6), and the ball body (8) is arranged between two valve seats (7).
5. 5. The bidirectional flow hard sealing metal ball valve of claim 4, wherein a valve rod (2) is arranged at the upper end of the ball body (8), and a handle (1) is fixedly connected to the upper end of the valve rod (2).
6. 6. The bidirectional flow hard sealing metal ball valve according to claim 1, wherein the two ends of the valve body (6) are fixedly connected with flange plates (3).
7. 7. The two-way flow hard sealing metal ball valve according to claim 6, wherein a water outlet (4) is arranged on one side of the valve body (6), and a cover (5) is arranged at one end of the water outlet (4).

Description

Bidirectional flow hard sealing metal ball valve Technical Field The utility model relates to the field of valve production, in particular to a bidirectional flow hard seal metal ball valve. Background In the field of industrial fluid control, the bidirectional flow hard seal metal ball valve is widely applied because of the characteristics of bidirectional seal, high temperature and high pressure resistance and the like. However, prior art ball valves suffer from significant drawbacks in handling complex media containing particulates, impurities, etc. Firstly, lack effective impurity clearance structure, tiny particles are easy to embed into the sealing surface, so that the sealing is invalid and leakage is caused, secondly, although partial ball valves are provided with scraping components, most of ball valves are of a single structure, different-size impurities are difficult to deal with, the surface of a ball body is easy to damage due to rigid scraping, and the flexible design cannot guarantee the clearance strength. In addition, after the valve seat sealing structure of the traditional ball valve is used for a long time, the valve seat sealing structure is affected by medium pressure and impurity abrasion, the elastic compensation capability is insufficient, and the sealing reliability is reduced. These problems limit the application of ball valves under high-requirement working conditions such as petrochemical industry, metallurgy and the like, and an improvement scheme which combines high-efficiency impurity removal and reliable sealing is needed. In the prior art, although a certain water flow control effect can be realized in use, the prior device has the defect that the prior device lacks a multistage impurity cleaning system and a rigid-flexible balance scraping structure, and in view of the problems, a bidirectional flow hard seal metal ball valve is provided, so that the problems are solved. Disclosure of utility model The utility model aims to solve the problems in the background art and provides a bidirectional flow hard sealing metal ball valve. The technical scheme includes that the bidirectional flow hard sealing metal ball valve comprises a valve body and a mounting ring, wherein two symmetrical valve seats are arranged in the valve body, a plurality of sleeves are fixedly connected to the outer wall of each valve seat, telescopic rods are arranged in the sleeves, one ends of the telescopic rods are fixedly connected with the mounting ring, two grooves are formed in the mounting ring, moving rods are arranged in the grooves, and one ends of the moving rods are respectively and correspondingly connected with a first scraping ring and a second scraping ring. When the bidirectional flow hard sealing metal ball valve is used, the trapezoid upper bottom at the upper end section of the first scraping ring is shortest, tiny particle impurities such as dust and tiny crystals attached to the surface of a ball body can be effectively scraped in the opening and closing process of the valve, preliminary cleaning is provided for a sealing surface, tiny particles are prevented from attaching to the surface of the ball body, abrasion of the sealing surface is avoided, and sealing performance is ensured; the second scraping ring has a trapezoid upper bottom with the longest cross section, the largest inner diameter and the rigidity fixed with the mounting ring, is mainly responsible for intercepting and scraping impurities with larger size on the periphery of the mounting ring, such as massive sediment, gravel and the like, preventing the impurities with larger size from affecting the normal operation of the mounting ring and internal parts, simultaneously, the cleaning range with large area can cover the wider area inside the valve body, and the two scraping rings are matched to construct an omnibearing impurity cleaning system to maintain the cleaning of the inner cavity of the valve body, the first scraping ring and the second scraping ring are connected with the mounting ring through a first spring to form flexible contact, and the supporting force provided by the spring enables the scraping ring to always attach to the surface of the ball body when the valve operates, thereby not only effectively removing impurities, but also buffering the impact force caused by the rotation of the ball body, ensuring the high precision of the surface of the ball body due to the rigid contact, ensuring the stable working condition, ensuring the stable and stable working condition of the surface of the ball body due to the high precision, the third scraping ring and the mounting ring are rigidly fixed through the fixing rod, impurities with larger sizes can be strongly scraped by virtue of a stable connection mode of the third scraping ring and the mounting ring, the rigid structure can keep stable scraping force when the third scraping ring and the mounting ring face to massive and hard impurities, large-particle s