Self-cleaning ball valve

Abstract

The utility model relates to the technical field of ball valves, and discloses a self-cleaning type ball valve which comprises a first valve body, a second valve body and follow-up mechanisms, the follow-up mechanisms are arranged in the first valve body and the second valve body respectively, and each follow-up mechanism comprises two first screw rods and a ball body. First supports are fixedly connected to the front ends and the rear ends of the inner walls of the first valve body and the second valve body correspondingly, the front ends and the rear ends of the first screw rods are rotationally connected with the first supports correspondingly, a plurality of first scraping plates are fixedly connected to the outer walls of rod bodies of the first screw rods, and second supports are fixedly connected to the two sides of the inner wall of the ball correspondingly. According to the self-cleaning ball valve, the first support in the follow-up mechanism is rotationally connected with the first screw rod, the second support in the follow-up mechanism is rotationally connected with the second screw rod, the first screw rod and the second screw rod can be driven by fluid, and the inner walls of the first valve body, the second valve body and the ball body are self-cleaned through the first scraping plate and the second scraping plate.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a self-cleaning ball valve. Background Art

[0002] A ball valve is a valve that opens, closes and adjusts flow by allowing a ball with a hole inside the valve body to rotate around the axis of the valve stem. It is widely used in the chemical, pharmaceutical, food and electric power industries.

[0003] However, as various fluids flow inside the valve body, a layer of attachments will slowly accumulate on the inner wall of the flow channel. Over time, this will cause the flow channel to narrow as a whole and cause blockage. Most of the pneumatic ball valves currently available on the market are not convenient for cleaning the inner wall of the flow channel, which increases the difficulty of workers' maintenance of pneumatic ball valves.

[0004] Therefore, those skilled in the art provide a self-cleaning ball valve to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a self-cleaning ball valve, in which the first bracket in the follower mechanism is rotatably connected to the first screw rod, and the second bracket is rotatably connected to the second screw rod, so that the first screw rod and the second screw rod can be driven by the fluid, and the first scraper and the second scraper are used to scrape the inner walls of the first valve body, the second valve body and the ball to perform self-cleaning.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A self-cleaning ball valve comprises a first valve body, a second valve body and a follow-up mechanism, wherein the first valve body and the second valve body are both provided with a follow-up mechanism, the follow-up mechanism comprises two first spiral rods and a ball, the front ends and rear ends of the inner walls of the first valve body and the second valve body are both fixedly connected to a first bracket, the front ends and rear ends of the first spiral rod are both rotatably connected to the first bracket, a plurality of first scrapers are fixedly connected to the outer wall of the first spiral rod body, the two sides of the inner wall of the ball are both fixedly connected to the second bracket, the second bracket is rotatably connected to the second spiral rod on one side close to the center of the ball, a plurality of second scrapers are fixedly connected to the outer wall of the second spiral rod body, the upper end of the first valve body is fixedly connected to a valve seat, and the center of the upper end of the ball is fixedly connected to a valve stem;

[0008] Through the above technical solution, the first bracket fixed in the first valve body and the second valve body is rotationally connected to the first screw rod, and the second bracket fixed in the spherical body is rotationally connected to the second screw rod. When the fluid flows, the first screw rod and the second screw rod can be driven to rotate rapidly. Cooperating with a plurality of first scrapers fixedly connected to the outer wall of the first screw rod and a plurality of second scrapers fixedly connected to the outer wall of the second screw rod, the inner walls of the first valve body, the second valve body and the spherical body can be scraped by the first scrapers and the second scrapers.

[0009] Further, a first connection disk is fixedly connected to the rear end of the first valve body, and a second connection disk is fixedly connected to the front end of the second valve body;

[0010] Through the above technical solution, the first connection disk and the second connection disk fixedly connected to the first valve body and the second valve body enable the staff to fixedly connect with an external pipeline by using a plurality of bolts and nuts, and then install the pneumatic ball valve in the pipeline system.

[0011] Further, a first mounting disk is fixedly connected to the front end of the outer wall of the first valve body, and a second mounting disk is fixedly connected to the rear end of the outer wall of the second valve body. The second mounting disk is fixedly connected to the first mounting disk by a plurality of bolts and nuts;

[0012] Through the above technical solution, through the first mounting disk and the second mounting disk fixedly connected to the first valve body and the second valve body, and in cooperation with a plurality of bolts and nuts, the first valve body and the second valve body can be connected together.

[0013] Further, a sealing ring is fixedly connected to the front end of the first valve body, and the front end of the sealing ring is in close fit with the second valve body;

[0014] Through the above technical solution, by the sealing ring fixedly connected to the first valve body being in close fit with the second valve body, the sealing performance when the two first valve body and the second valve body are connected is improved.

[0015] Further, a first fitting block is fixedly connected to the inner wall of one side of the first valve body close to the center of the spherical body, and a second fitting block is fixedly connected to the inner wall of one side of the second valve body close to the center of the spherical body. The outer walls of the rear end of the second fitting block and the front end of the first fitting block are both in close fit with the spherical body;

[0016] Through the above technical solution, by making the first fitting block fixedly connected in the first valve body and the second fitting block fixedly connected in the second valve body be in close fit with the spherical body, the opening of the spherical body is perpendicular to the first valve body. When the ball valve is closed, the sealing performance is improved, preventing fluid leakage. At the same time, direct contact with the inner wall of the valve body can be avoided, reducing wear.

[0017] Further, a cover is fixedly connected to the edge of the upper end of the valve seat through a plurality of bolts and nuts. The upper end of the valve stem sequentially penetrates through the first valve body, the valve seat and the cover and is fixedly connected to a handle.

[0018] Through the above technical solution, the cover fixedly connected to the valve seat through a plurality of bolts and nuts can press the valve stem to fix its up and down position and reduce shaking. By rotating the handle fixedly connected to the upper end of the valve stem, the valve stem can drive the sphere to rotate inside the first valve body.

[0019] Further, a sealing ring is fixedly connected to the middle of the upper end of the valve seat, and the upper end of the sealing ring is in close fit with the valve stem.

[0020] Through the above technical solution, the sealing ring fixedly connected to the valve seat is in close fit with the valve stem, avoiding the fluid from breaking through the first and second fitting blocks and flowing out and leaking between the valve stem and the inner wall of the first valve body, thus improving the sealing performance.

[0021] The utility model has the following beneficial effects:

[0022] A self-cleaning ball valve proposed by the utility model, through the first bracket fixed in the first valve body and the second valve body in the follow-up mechanism is rotationally connected with the first screw rod, and the second bracket fixed in the sphere is rotationally connected with the second screw rod, so that when the fluid flows, the first screw rod and the second screw rod can be driven to rotate rapidly. Cooperating with a plurality of first scraping plates fixedly connected to the outer wall of the rod body of the first screw rod and a plurality of second scraping plates fixedly connected to the outer wall of the rod body of the second screw rod, the inner walls of the first valve body, the second valve body and the sphere can be scraped by the first scraping plates and the second scraping plates, thereby enabling self-cleaning of the inner wall of the flow channel, reducing the number of times of manual cleaning by staff, and reducing the working difficulty of maintaining the pneumatic ball valve. Description of the Drawings

[0023] Figure 1 is a schematic diagram of the main structure of a self-cleaning ball valve proposed by the utility model;

[0024] Figure 2 is an exploded view of a self-cleaning ball valve proposed by the utility model;

[0025] Figure 3 is a side sectional view of a self-cleaning ball valve proposed by the utility model;

[0026] Figure 4 is a front sectional view of a self-cleaning ball valve proposed by the utility model;

[0027] Figure 5 is Figure 3 an enlarged view of part A in

[0028] Legend Explanation:

[0029] 1. First valve body; 2. First connection plate; 3. First mounting plate; 4. Second valve body; 5. Second connection plate; 6. Second mounting plate; 7. Follow-up mechanism; 701. First bracket; 702. First screw rod; 703. First scraper; 704. Sphere; 705. Second bracket; 706. Second screw rod; 707. Second scraper; 8. Sealing ring; 9. First fitting block; 10. Second fitting block; 11. Valve seat; 12. Sealing ring; 13. Valve rod; 14. Cover; 15. Handle. Specific embodiments

[0030] Next, the technical solutions in the specific embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the specific embodiments of the present invention. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, rather than all of the specific embodiments. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0031] Refer to Figures 1-5 , a specific embodiment provided by the present invention: a self-cleaning ball valve, including a first valve body 1, a second valve body 4 and a follow-up mechanism 7. The follow-up mechanism 7 is provided inside both the first valve body 1 and the second valve body 4. The follow-up mechanism 7 includes two first screw rods 702 and a sphere 704. The front and rear ends of the inner walls of the first valve body 1 and the second valve body 4 are fixedly connected with first brackets 701. The front and rear ends of the first screw rod 702 are rotatably connected with the first brackets 701. A plurality of first scrapers 703 are fixedly connected to the outer wall of the rod body of the first screw rod 702. Both sides of the inner wall of the sphere 704 are fixedly connected with second brackets 705. A second screw rod 706 is rotatably connected to one side of each second bracket 705 close to the center of the sphere 704. A plurality of second scrapers 707 are fixedly connected to the outer wall of the rod body of the second screw rod 706. The upper end of the first valve body 1 is fixedly connected with a valve seat 11. The center of the upper end of the sphere 704 is fixedly connected with a valve rod 13.

[0032] The first bracket 701 fixed in the first valve body 1 and the second valve body 4 in the follow-up mechanism 7 is rotationally connected to the first screw rod 702, and the second bracket 705 fixed in the sphere 704 is rotationally connected to the second screw rod 706. When the fluid flows, the first screw rod 702 and the second screw rod 706 can be driven to rotate rapidly. With the cooperation of a plurality of first scraping plates 703 fixedly connected to the outer wall of the rod body of the first screw rod 702 and a plurality of second scraping plates 707 fixedly connected to the outer wall of the rod body of the second screw rod 706, the inner walls of the first valve body 1, the second valve body 4 and the sphere 704 can be scraped by the first scraping plates 703 and the second scraping plates 707. Furthermore, the inner wall of the flow channel can be self-cleaned, the number of times of manual cleaning by staff is reduced, and the working difficulty of maintaining the pneumatic ball valve is lowered.

[0033] A first connection disk 2 is fixedly connected to the rear end of the first valve body 1, and a second connection disk 5 is fixedly connected to the front end of the second valve body 4. By means of the first connection disk 2 and the second connection disk 5 fixedly connected to the first valve body 1 and the second valve body 4 respectively, workers can use multiple bolts and nuts to fixedly connect with an external pipeline, and then install the pneumatic ball valve in the pipeline system. A first mounting disk 3 is fixedly connected to the front end of the outer wall of the first valve body 1, and a second mounting disk 6 is fixedly connected to the rear end of the outer wall of the second valve body 4. The second mounting disk 6 is fixedly connected to the first mounting disk 3 by multiple bolts and nuts. By means of the first mounting disk 3 and the second mounting disk 6 fixedly connected to the first valve body 1 and the second valve body 4 respectively, and in cooperation with multiple bolts and nuts, the first valve body 1 and the second valve body 4 can be connected together. A sealing ring 8 is fixedly connected to the front end of the first valve body 1, and the front end of the sealing ring 8 is in close fit with the second valve body 4. By means of the sealing ring 8 fixedly connected to the first valve body 1 being in close fit with the second valve body 4, the sealing performance when the two, i.e., the first valve body 1 and the second valve body 4, are connected is improved. A first fitting block 9 is fixedly connected to the inner wall of the first valve body 1 on one side near the center of the ball 704, and a second fitting block 10 is fixedly connected to the inner wall of the second valve body 4 on one side near the center of the ball 704. The outer wall of the rear end of the second fitting block 10 and the outer wall of the front end of the first fitting block 9 are both in close fit with the ball 704. By means of the first fitting block 9 fixedly connected inside the first valve body 1 and the second fitting block 10 fixedly connected inside the second valve body 4 being in close fit with the ball 704, the opening of the ball 704 is perpendicular to the first valve body 1. And when the ball valve is closed, the sealing performance is improved, preventing fluid leakage. At the same time, direct contact with the inner wall of the valve body can be avoided, reducing wear. A cover 14 is fixedly connected to the edge at the upper end of the valve seat 11 by multiple bolts and nuts. The upper end of the valve stem 13 sequentially penetrates through the first valve body 1, the valve seat 11 and the cover 14 and is fixedly connected to the handle 15. By means of the cover 14 fixedly connected to the valve seat 11 by multiple bolts and nuts, the valve stem 13 can be pressed to fix its vertical position and reduce shaking. And by rotating the handle 15 fixedly connected to the upper end of the valve stem 13, the valve stem 13 can drive the ball 704 to rotate inside the first valve body 1. A sealing ring 12 is fixedly connected to the middle of the upper end of the valve seat 11, and the upper end of the sealing ring 12 is in close fit with the valve stem 13. By means of the sealing ring 12 fixedly connected to the valve seat 11 being in close fit with the valve stem 13, it is avoided that fluid breaks through the first fitting block 9 and the second fitting block 10 and flows out and leaks between the valve stem 13 and the inner wall of the first valve body 1, enhancing the sealing performance.

[0034] Working principle: When using this new pneumatic ball valve, first, the staff uses multiple bolts and nuts to cooperate with the first connection plate 2 fixed on the first valve body 1 and the second connection plate 5 fixedly connected to the second valve body 4 to connect this pneumatic ball valve into the pipeline. Secondly, the staff can use the handle 15 to make the valve stem 13 drive the ball 704 to rotate inside the first valve body 1, change the opening and closing of the valve, and change the flow condition of the fluid. Finally, by rotatably connecting the first bracket 701 with the first screw rod 702 and the second bracket 705 with the second screw rod 706, the first screw rod 702 and the second screw rod 706 can be driven to rotate by the fluid, and the inner walls of the first valve body 1, the second valve body 4 and the ball 704 are scraped by the first scraper 703 and the second scraper 707 to clean the attachments on the inner wall of the flow channel.

[0035] Finally, it should be noted that the above are only the preferred specific embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing specific embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-cleaning ball valve, comprising a first valve body (1), a second valve body (4) and a follower mechanism (7), characterized in that: A follower mechanism (7) is provided inside the first valve body (1) and the second valve body (4), and the follower mechanism (7) comprises two first screw rods (702) and a sphere (704). The front and rear ends of the inner walls of the first valve body (1) and the second valve body (4) are fixedly connected to a first bracket (701), the front and rear ends of the first screw rod (702) are rotatably connected to the first bracket (701), the outer wall of the first screw rod (702) is fixedly connected to a plurality of first scrapers (703), the inner walls of the sphere (704) are fixedly connected to second brackets (705) on both sides, the second bracket (705) is rotatably connected to a second screw rod (706) on one side close to the center of the sphere (704), the outer wall of the second screw rod (706) is fixedly connected to a plurality of second scrapers (707), the upper end of the first valve body (1) is fixedly connected to a valve seat (11), and the center of the upper end of the sphere (704) is fixedly connected to a valve stem (13).

2. A self-cleaning ball valve according to claim 1, characterized in that: The rear end of the first valve body (1) is fixedly connected to a first connection disk (2), and the front end of the second valve body (4) is fixedly connected to a second connection disk (5).

3. A self-cleaning ball valve according to claim 1, characterized in that: The front end of the outer wall of the first valve body (1) is fixedly connected to a first mounting plate (3), and the rear end of the outer wall of the second valve body (4) is fixedly connected to a second mounting plate (6), and the second mounting plate (6) is fixedly connected to the first mounting plate (3) by means of a plurality of bolts and nuts.

4. A self-cleaning ball valve according to claim 1, characterized in that: A sealing ring (8) is fixedly connected to the front end of the first valve body (1), and the front end of the sealing ring (8) is tightly fitted to the second valve body (4).

5. A self-cleaning ball valve according to claim 1, characterized in that: A first fitting block (9) is fixedly connected to the inner wall of the first valve body (1) on one side close to the center of the sphere (704), and a second fitting block (10) is fixedly connected to the inner wall of the second valve body (4) on one side close to the center of the sphere (704). The outer wall at the rear end of the second fitting block (10) and the outer wall at the front end of the first fitting block (9) are both tightly fitted to the sphere (704).

6. A self-cleaning ball valve according to claim 1, characterized in that: A cover (14) is fixedly connected to the edge of the upper end of the valve seat (11) via a plurality of bolts and nuts, and the upper end of the valve stem (13) passes through the first valve body (1), the valve seat (11) and the cover (14) in sequence and is fixedly connected to the handle (15).

7. A self-cleaning ball valve according to claim 1, characterized in that: A sealing ring (12) is fixedly connected to the middle of the upper end of the valve seat (11), and the upper end of the sealing ring (12) is tightly fitted to the valve stem (13).

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