Sanitary full ball valve capable of cleaning a spherical surface

Abstract

The utility model discloses a sanitary full -enclosed ball valve of can clean spheric surface, its technical scheme main points are including valve body, the ball core of being located in the valve body and two opposite settings and the valve seat of being wrapped in the ball core outside, the inner wall of two valve seats all includes with the flow through department of ball core inner chamber coaxial and supplies medium and passes, with the sealing portion of ball core outer wall adhesion and with the accommodation of ball core outer wall gap exists department, sealing portion is located between flow through department and accommodation department, two accommodations all are provided with two relative ball core axis symmetry and can with ball core outer wall top touch's scratch strip, through ball core relative valve seat rotation makes the scratch strip can scrape the medium on ball core outer wall, solved the existing technology and had the problem that the medium was easy to adhere ball core and deteriorated and ball core rotation difficult.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and more specifically to a sanitary full-coverage ball valve that can clean the surface of a ball. Background Technology

[0002] Sanitary enclosed ball valves are mainly used in industries with high hygiene standards, such as food, beverage, pharmaceuticals, and biotechnology. Sanitary enclosed ball valves require minimal media residue within the valve cavity housing the valve seat and ball core to prevent media variation that could affect media quality. Existing sanitary enclosed ball valves typically use a method where the inner walls of both valve seats jointly cover the spherical surface of the ball core to prevent media adhesion. However, this method still has drawbacks: First, during ball core rotation, a portion of the ball surface will always adhere to the media, which can easily deteriorate due to prolonged stagnation, affecting product quality. Second, existing technology, by tightly fitting the inner walls of the two valve seats to the ball core surface, can easily cause difficulty in the ball core rotating relative to the valve seats. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sanitary full-enclosure ball valve that is easy to rotate and can prevent the medium from remaining on the surface of the ball core.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sanitary-grade fully enclosed ball valve capable of cleaning spherical surfaces, comprising a valve body, a ball core located within the valve body, and two valve seats arranged opposite to each other and enclosing the ball core. The inner walls of the two valve seats each include a flow section coaxial with the inner cavity of the ball core and through which the medium flows, a sealing section that fits against the outer wall of the ball core, and a receiving section with a gap between it and the outer wall of the ball core. The sealing section is located between the flow section and the receiving section. Each of the two receiving sections is provided with two scraper blades symmetrical about the vertical plane containing the axis of the ball core and capable of contacting the outer wall of the ball core. By rotating the ball core relative to the valve seats, the scraper blades can scrape off the medium on the outer wall of the ball core.

[0005] As a further improvement of this utility model, both scrapers are located at the port of the receiving part facing the other receiving part.

[0006] As a further improvement of this utility model, the two ends of the scraper are located on the upper and lower sides of the inner cavity port of the ball core, respectively.

[0007] As a further improvement of this utility model, the width of the scraper gradually decreases in the direction extending towards the outer wall of the ball core.

[0008] As a further improvement of this utility model, the valve seat also includes a smooth portion that connects the sealing portion and the receiving portion together.

[0009] The beneficial effects of this utility model are as follows: The scraper design, which cleans the outer wall of the ball core during its opening and closing process, not only facilitates the rotation of the ball core relative to the valve seat with less resistance compared to existing technologies, but also prevents the medium from remaining on the outer wall of the ball core for extended periods and deteriorating, thus improving product quality. The design of the receiving portion, compared to existing technologies, reduces the contact area between the valve seat and the ball core surface while ensuring a tight seal, thereby reducing the torque required by the ball core and improving its opening and closing efficiency. The design of machining two unconnected scrapers on the valve seat, compared to connecting two scrapers in an approximately U-shape, ensures smooth flow of the medium through the receiving portion and the ball core. It also ensures that the medium accumulated at the bottom of the ball core and the medium scraped off by the scrapers can flow along with the mainstream medium into another channel of the valve body, improving the fluidity of the medium and effectively preventing the medium from accumulating below the ball core and easily deteriorating. Attached Figure Description

[0010] Figure 1 This is a front sectional view of the present invention; Figure 2 for Figure 1 Cross-sectional view of the ball core at point AA when it is connected to the valve seat; Figure 3 for Figure 2 Enlarged view of point B in the middle; Figure 4 for Figure 2 Enlarged view of point C in the middle; Figure 5 This is a split view of the valve seat and the ball core in this utility model; Figure 6 This is a diagram showing the valve seat and ball core in the open state in this utility model; Figure 7 This is a diagram showing the state of the valve seat and the ball core when they are in the open and closed state in this utility model. Figure 8 This is a diagram showing the valve seat and ball core in the closed state in this utility model.

[0011] Reference numerals: 1. Valve body; 2. Ball core; 3. Valve seat; 31. Flow section; 32. Sealing section; 33. Receiving section; 34. Scraper; 35. Smooth section. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals.

[0013] Reference Figures 1 to 8 As shown, a sanitary full-coverage ball valve capable of cleaning spherical surfaces in this embodiment includes a valve body 1, a ball core 2 located inside the valve body 1, and two valve seats 3 arranged opposite to each other and wrapped around the ball core 2. Based on the aforementioned prior art, a receiving portion 33 with an inner diameter larger than the diameter of the ball core 2 is machined into the valve seat 3 from the two opposing ports of the valve seat 3. The unprocessed portion that fits against the outer wall of the ball core 2 to form a hard seal is the sealing portion 32. The flow portion 31 is coaxially connected to the port of the sealing portion 32 and communicates with the inner cavity of the ball core 2. During the processing of the receiving portion 33, two arc-shaped scrapers 34 are machined on the receiving portion 33 and are coaxial with the valve seat 3. The two scrapers 34 are symmetrical with respect to the vertical plane where the axis of the valve seat 3 is located. The circumference diameter of the inner wall of the scraper 34 facing the center of the valve seat 3 is the same as the outer wall diameter of the ball core 2. In the initial state, the inner cavity of the ball core 2 is coaxial with the flow section 31. The portion of the outer wall of the ball core 2 near the inner cavity port is tightly fitted with the sealing part 32 to form a hard seal. The medium only flows through the inner cavity of the ball core 2, and the scrapers 34 on both receiving parts 33 are in contact with the outer wall of the ball core 2. During the closing process of the ball core 2, the ball core 2 rotates relative to the valve seat 3. Before the inner cavity port of the ball core 2 is completely misaligned with the flow section 31, some medium will flow to the sealing part 32 and the receiving part 33. Medium will adhere to the outer wall of the ball core 2 opposite to the receiving part 33. The scraper 34 can scrape off the medium on the surface of the ball core 2. The scraped medium will flow with the mainstream medium into another channel of the valve body 1 until the inner cavity port of the ball core 2 is completely misaligned with the flow section 31, and the sealing part 32 and the outer wall of the ball core 2 are completely misaligned. A new effective hard seal is formed, and the medium is blocked on one side of the ball core 2. The medium retained in the inner cavity of the ball core 2 will flow to the receiving part 33 and eventually remain stationary. In the stationary state, the medium will adhere to the outer wall of the ball core 2 and the receiving part 33. During the opening process of the ball core 2, the ball core 2 rotates relative to the valve seat 3. The scraper 34 can scrape off the medium adhering to the outer wall of the ball core 2. The medium enters the inner cavity of the ball core 2 and the scouring force generated on the receiving part 33 will drive the medium on the receiving part 33 to return to the flow state. A part of the medium will be obstructed by the scraper 34 and flow down to the ball core 2. Then the medium will carry the medium below the ball core 2 to flow through the gap between the ends of the pair of scraper 34 until the ball core 2 returns to the initial state. The medium can only flow through the inner cavity of the ball core 2. The scraper 34, designed to clean the outer wall of the ball core 2 during opening and closing, not only facilitates the rotation of the ball core 2 relative to the valve seat 3 with less resistance compared to existing technologies, but also prevents the medium from remaining on the outer wall of the ball core 2 for a long time and deteriorating, thus improving product quality. The design of the receiving part 33, compared to existing technologies, reduces the contact area between the valve seat 3 and the ball core 2 while ensuring a tight seal, thereby reducing the torque required by the ball core 2 and improving its opening and closing efficiency. The design of machining two unconnected scrapers 34 on the valve seat 3, compared to connecting two scrapers 34 in an approximately U-shape, ensures smooth flow of the medium between the receiving part 33 and the ball core 2. It also ensures that the medium accumulated at the bottom of the ball core 2 and the medium scraped off by the scrapers 34 can flow with the mainstream medium into another channel of the valve body 1, improving the fluidity of the medium and effectively preventing the medium from accumulating below the ball core 2 and easily deteriorating.

[0014] As one specific implementation method of the improvement, refer to Figure 3 , Figures 5 to 8 As shown, when both scraper bars 34 on the receiving part 33 are positioned at the port of the receiving part 33 away from the sealing part 32, after the two valve seats 3 are joined together, the scraper bars 34 of the two receiving parts 33 can be joined together, and the joined scraper bars 34 are located on the symmetrical plane where the center of the ball core 2 is located. The joined scraper bars 34 are more stable and stronger in structure than the unjoined scraper bars 34, making them suitable for more frequent and repeated scraping, and with a longer service life. In terms of processing, the scraper bars 34 are easier to process when positioned at the port of the receiving part 33. In terms of media flow, the design of joining the scraper bars 34, compared to the design of spreading the scraper bars 34, can reduce the obstruction of the media flow by the scraper bars 34, ensuring that the media can flow to the other channel of the valve body 1 in a timely manner.

[0015] As one specific implementation of the improvement, there is a phenomenon where the scraper 34 completely separates from the outer wall of the ball core 2 after the ball core 2 is fully closed. If the ball core 2 shifts relative to the valve seat 3, the scraper 34 will collide with the ball core 2 and hinder its rotation during the subsequent process of turning the ball core 2 back to the open state. Furthermore, the scraper 34 may be damaged upon contact. To solve the aforementioned problem, refer to... Figures 5 to 8As shown, the scraper 34 is located on a vertical plane perpendicular to the axis of the ball core 2. The projected length of the scraper 34 in the vertical plane is greater than the diameter of the inner cavity port of the ball core 2. The two ends of the scraper 34 are located on the upper and lower sides of the inner cavity port of the ball core 2, respectively. That is, the height of the two ends of the scraper 34 is higher than the highest point and lower than the lowest point of the inner cavity port of the ball core 2, respectively. This design ensures that the two ends of the scraper 34 are always in contact with the outer wall of the ball core 2, which indirectly improves the connection stability of the ball core 2 relative to the valve seat 3. At the same time, it ensures that the scraper 34 can smoothly re-contact the outer wall of the ball core 2 during the opening process of the ball core 2, which indirectly ensures the stability of the scraper 34 structure and extends the service life of the scraper 34.

[0016] As one specific implementation method of the improvement, refer to Figure 3 As shown, the width of the scraper 34 gradually decreases in the direction extending towards the outer wall of the ball core 2, and the scraper 34 tends to be sharp. This design can reduce the frictional resistance generated between the scraper 34 and the outer wall of the ball core 2, which is conducive to the smooth rotation of the ball core 2 relative to the scraper 34, and indirectly improves the opening and closing efficiency of the ball core 2.

[0017] As one specific implementation method of the improvement, refer to Figure 4 and Figure 5 As shown, the valve seat 3 also includes a smooth section 35 that connects the sealing part 32 and the receiving part 33. The inner diameter of the smooth section 35 gradually increases along the direction from the sealing part 32 to the receiving part 33. This design, compared to the design where the connection between the sealing part 32 and the receiving part 33 is a shoulder, can facilitate the smooth flow of the medium and prevent the medium from accumulating at the connection between the sealing part 32 and the receiving part 33 and deteriorating.

[0018] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A sanitary full-coverage ball valve capable of cleaning a spherical surface, comprising a valve body (1), a ball core (2) located within the valve body (1), and two valve seats (3) arranged opposite to each other and wrapped around the ball core (2), characterized in that: The inner walls of both valve seats (3) include a flow section (31) coaxial with the inner cavity of the ball core (2) and through which the medium flows, a sealing section (32) that fits against the outer wall of the ball core (2), and a receiving section (33) with a gap between it and the outer wall of the ball core (2). The sealing section (32) is located between the flow section (31) and the receiving section (33). Both receiving sections (33) are provided with two scraper strips (34) that are symmetrical about the vertical plane containing the axis of the ball core (2) and can touch the outer wall of the ball core (2). The scraper strips (34) can scrape the medium on the outer wall of the ball core (2) by rotating the ball core (2) relative to the valve seat (3).

2. The sanitary-grade fully enclosed ball valve capable of cleaning spherical surfaces according to claim 1, characterized in that: Both scrapers (34) are located at the port of the receiving part (33) facing the other receiving part (33).

3. A sanitary-grade fully enclosed ball valve capable of cleaning spherical surfaces according to claim 1 or 2, characterized in that: The two ends of the scraper (34) are located on the upper and lower sides of the inner cavity port of the ball core (2).

4. A sanitary-grade fully enclosed ball valve capable of cleaning a spherical surface according to claim 1 or 2, characterized in that: The width of the scraper (34) gradually decreases in the direction extending toward the outer wall of the ball core (2).

5. A sanitary-grade fully enclosed ball valve capable of cleaning a spherical surface according to claim 1 or 2, characterized in that: The valve seat (3) also includes a smooth section (35) that connects the sealing part (32) and the receiving part (33).

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