V-shaped ball valve with self-grinding valve ball

Abstract

The utility model discloses a V-shaped ball valve with a self-grinding valve ball, belongs to the technical field of valves, and solves the problems that the concentration of solid particles in fluid is low, the probability that the solid particles remain on the valve ball is very high if the concentration is high and the fluid has certain viscosity, and the maintenance and cleaning period of the V-shaped ball valve is shortened. Comprising two outer fixing sleeves and a scraping part, the two ends of the scraping part are fixedly connected to the outer rings of the outer fixing sleeves to form connecting parts, and the scraping part is linear. When the V-shaped valve ball is opened and closed, the outer ring of the V-shaped valve ball can complete the self-grinding action relative to the scraping part, and then solid particles attached to the outer side of the outer ring are scraped off, so that the situation that when the outer ring of the V-shaped valve ball is attached to the inner wall of the valve body, the outer ring of the V-shaped valve ball and the inner wall of the valve body are abraded by the solid particles between the outer ring of the V-shaped valve ball and the inner wall of the valve body is avoided; the sealing performance of the V-shaped valve ball during sealing is ensured, and the maintenance and cleaning period of the ball valve is prolonged.

Description

Technical Field

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

[0002] The V-type ball valve is a valve with a compact structure and excellent sealing performance, which is widely used in various industries. Its main feature is that there is a ball with a V-shaped cutout in the valve body. When the valve stem rotates, the V-shaped cutout on the ball forms different angles with the flow channel, thereby controlling the flow rate of the medium. The sealing surface of the V-type ball valve is usually made of metal or reinforced plastic, which has good wear resistance and corrosion resistance. In addition, the V-type ball valve also has the characteristics of easy operation, fast opening and closing, and simple maintenance. Due to its structural design, the V-type ball valve can achieve precise control when adjusting the flow rate, and is suitable for occasions that require precise adjustment. In industrial automation and process control, V-type ball valves are favored for their reliability and economy.

[0003] Especially in the pulping and papermaking process, the V-type ball valve can handle fluids containing suspended particles such as pulp, white water, black liquor, and white liquor. The solid particles in the fluid may adhere to the valve ball, especially when handling fluids with high concentrations of solid particles. Therefore, the maintenance and regular cleaning of the V-type ball valve are also important measures to ensure its long-term stable operation. However, if the concentration of solid particles in the fluid is low, it is acceptable. If the concentration is high and the fluid itself has a certain viscosity, the probability of solid particles remaining on the valve ball will be very high, which will also shorten the maintenance and cleaning cycle of the V-type ball valve.

[0004] Therefore, a V-type ball valve with self-grinding valve ball is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a V-shaped ball valve with a self-grinding valve ball.

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

[0007] A V-shaped ball valve with self-grinding valve ball comprises two outer fixing sleeves and a scraper, wherein the two ends of the scraper are fixedly connected to the outer ring of the outer fixing sleeve to form a connecting portion, the scraper is linear, and also comprises a V-shaped valve ball rotatably arranged between the two outer fixing sleeves, and the scraper is arranged to fit the outer peripheral wall of the V-shaped valve ball.

[0008] Preferably, the scraping portion is arranged tautly.

[0009] Preferably, there are a plurality of scraping parts, the plurality of scraping parts are evenly spaced apart, and the concave surfaces of the scraping parts are arranged toward the feeding direction of the fluid.

[0010] Preferably, the scraping part is a stainless steel wire.

[0011] Preferably, the outer ring of the V-shaped valve ball is fixedly connected to two rotating seats that are centrally symmetrically arranged, and the rotating seats are rotatably connected to the inner ring of the outer fixed sleeve.

[0012] Preferably, the outer side of the V-shaped valve ball is provided with an outer chamfered surface located at the edge of its cutout.

[0013] Preferably, the inner side of the V-shaped valve ball is provided with an inner chamfered surface located at the edge of its cutout.

[0014] Preferably, it also includes a valve body and a valve shaft, the valve body is connected to a valve seat, the inner wall of the valve body is provided with a rotating groove coaxially arranged with the valve seat, the outer fixed sleeve on one side is fixedly connected to the rotating groove, and the outer fixed sleeve on the other side is fixedly connected to the valve seat, and the lower end of the valve shaft passes through the valve seat into the valve body and is fixedly connected to the rotating seat on one side.

[0015] The utility model has the following beneficial effects:

[0016] The utility model can make the outer ring of the V-shaped valve ball complete the self-grinding action relative to the scraper when the V-shaped valve ball is opened and closed, and then scrape off the solid particles attached to the outside thereof, so as to avoid the solid particles between the outer ring of the V-shaped valve ball and the inner wall of the valve body when they are in contact with each other to wear both of them, thereby ensuring the sealing performance of the V-shaped valve ball when sealing, and also extending the maintenance and cleaning cycle of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the V-shaped valve ball in the utility model.

[0019] 1. Valve body; 2. Valve shaft; 3. V-type valve ball; 4. Rotating seat; 5. External chamfered surface; 6. Internal chamfered surface; 7. External fixed sleeve; 8. Connecting part; 9. Scraping part. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] A self-grinding V-type ball valve, such as Figure 1As shown, it includes a valve body 1, a valve shaft 2, two external fixing sleeves 7, a V-shaped valve ball 3 rotatably arranged between the two external fixing sleeves 7, and a scraper 9. The outer ring of the V-shaped valve ball 3 is fixedly connected to two rotating seats 4 arranged symmetrically with the center. The rotating seat 4 is rotatably connected to the inner ring of the external fixing sleeve 7. The valve body 1 is connected to the valve seat. A rotating groove coaxially arranged with the valve seat is opened on the inner wall of the valve body 1. The external fixing sleeve 7 on one side is fixedly connected to the rotating groove, and the external fixing sleeve 7 on the other side is fixedly connected to the valve seat. The lower end of the valve shaft 2 passes through the valve seat to the inside of the valve body 1 and is fixedly connected to the rotating seat 4 on one side.

[0022] like Figure 2 As shown, the outer side of the V-shaped valve ball 3 is provided with an outer chamfered surface 5 located at the edge of the cutout, and the inner side of the V-shaped valve ball 3 is provided with an inner chamfered surface 6 located at the edge of the cutout.

[0023] like Figure 2 As shown, both ends of the scraper 9 are fixedly connected to the outer ring of the outer fixed sleeve 7 to form a connecting portion 8, the scraper 9 is linear, the scraper 9 is arranged to fit the outer peripheral wall of the V-shaped valve ball 3, the scraper 9 is arranged tautly, the number of the scrapers 9 is several, the several scrapers 9 are arranged evenly spaced, and the concave surface of the scraper 9 is arranged toward the feeding direction of the fluid. Specifically, the scraper 9 is a stainless steel wire.

[0024] When the utility model is actually used, it is only necessary for the valve shaft 2 to drive the V-shaped valve ball 3 to deflect in the valve body 1 to realize the opening and closing of the flow channel in the valve body 1 .

[0025] The V-shaped valve ball 3 is preferably provided with a plurality of outer chamfered surfaces 5 and an inner chamfered surface 6, so that the V-shaped valve ball 3 can be easily cut off from the fluid by the outer chamfered surface 5 when the V-shaped valve ball 3 is cut off.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-grinding V-type ball valve, characterized in that: The invention comprises two outer fixing sleeves (7) and a scraper (9), wherein two ends of the scraper (9) are fixedly connected to the outer ring of the outer fixing sleeve (7) to form a connecting portion (8), and the scraper (9) is linear. The invention also comprises a V-shaped valve ball (3) rotatably arranged between the two outer fixing sleeves (7), and the scraper (9) is arranged to fit the outer peripheral wall of the V-shaped valve ball (3).

2. A self-grinding V-shaped ball valve according to claim 1, characterized in that: The scraping part (9) is arranged in a taut manner.

3. A self-grinding V-shaped ball valve according to claim 1 or 2, characterized in that: The number of the scraping parts (9) is a plurality, the plurality of scraping parts (9) are arranged at even intervals, and the concave surfaces of the scraping parts (9) are arranged toward the feeding direction of the fluid.

4. A self-grinding V-shaped ball valve according to claim 3, characterized in that: The scraping part (9) is a stainless steel wire.

5. The self-grinding V-shaped ball valve according to claim 1, characterized in that: The outer ring of the V-shaped valve ball (3) is fixedly connected to two rotating seats (4) which are centrally symmetrically arranged, and the rotating seats (4) are rotatably connected to the inner ring of the outer fixed sleeve (7).

6. A self-grinding V-shaped ball valve according to claim 1, characterized in that: The outer side of the V-shaped valve ball (3) is provided with an outer chamfered surface (5) located at the edge of its cutout.

7. The self-grinding V-shaped ball valve according to claim 1, characterized in that: The inner side of the V-shaped valve ball (3) is provided with an inner chamfered surface (6) located at the edge of the cutout.

8. The self-grinding V-shaped ball valve according to claim 5, characterized in that: It also includes a valve body (1) and a valve shaft (2), wherein the valve body (1) is connected to a valve seat, and a rotation groove coaxially arranged with the valve seat is opened on the inner wall of the valve body (1), the outer fixed sleeve (7) on one side is fixedly connected to the rotation groove, and the outer fixed sleeve (7) on the other side is fixedly connected to the valve seat, and the lower end of the valve shaft (2) passes through the valve seat to the inside of the valve body (1) and is fixedly connected to the rotating seat (4) on one side.

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