Cleaning ball valve

Abstract

According to the technical scheme, the cleaning ball valve is characterized in that the cleaning ball valve comprises a valve body, a valve element and a valve seat, the valve body is provided with a liquid inlet and a liquid outlet which are communicated, the valve element has an opening state and a closing state, and a cleaning assembly is arranged on the valve body; the valve element is provided with a movable pressing block, the pressing block is provided with a control block used for controlling movement, and the valve body is provided with a movable cavity matched with the control block. The valve body is provided with a control port A and a control port B, and the control port A and the control port B are communicated with the two ends of the movable cavity respectively. Residual fluid can be quickly and conveniently cleaned through the cleaning assembly, the pressing block can be well attached to the ball valve to reduce permeation gaps of the residual fluid caused by opening and closing the valve element, the pressing block can be far away from the valve element by operating the control block, and the contact face of the valve element and the pressing block can be deeply cleaned.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically to a cleaning ball valve. Background Technology

[0002] Currently, ball valves are robust valves used in many applications, sometimes under extreme operating conditions including high temperatures and high pressures. Such conditions are encountered, for example, in the petroleum industry and various other energy-related fields, such as in equipment for storing and recovering solar energy by heating and transporting molten salt.

[0003] However, the aforementioned existing technologies still have some drawbacks. In energy-related fields such as the petroleum industry, which involve high temperatures and pressures, a certain amount of fluid remains inside and downstream of the traditional ball valve when it is closed. After the system cools and dries, these residues tend to solidify, which may not only require greater operating force to reopen the valve, but in severe cases, may even cause blockages in the valve itself or downstream process pipelines. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a cleaning ball valve.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cleaning ball valve, comprising a valve body, a valve core, and a valve seat. The valve body is provided with a liquid inlet and a liquid outlet. The valve core has two states: open and closed. A cleaning component is provided on the valve body. The valve core is equipped with a movable clamping block. The clamping block has a closed state close to the valve core and an open state away from the valve core. The clamping block is provided with a control block for controlling its movement. The valve body is provided with a movable cavity adapted to the control block. The valve body is provided with control port A and control port B, which are respectively connected to both ends of the movable cavity for operating the control block to move left and right within the movable cavity.

[0006] The present invention is further configured such that: the cleaning component includes an external flushing port arranged near the liquid outlet and an internal flushing port near the inner side of the valve core; the clamping block is provided with an opening; and the valve body is provided with a water inlet; when the clamping block is in the open state, the opening will make the water inlet and the external flushing port connected.

[0007] The present invention is further configured such that when the clamping block is in the open state, a gap cavity is formed between the clamping block and the valve core, and the valve body is provided with a fluid channel connecting the gap cavity and the water inlet.

[0008] The present invention is further configured such that: the valve body is provided with a waste liquid port that communicates with the inner cavity of the valve core, and the waste liquid port communicates with the liquid outlet.

[0009] The present invention is further configured such that at least two external flushing ports are evenly arranged along the circumference of the valve body.

[0010] The present invention is further configured such that: the inner flushing port forms an angle with the inner surface of the valve core; in the closed state, there is an axial extension line L of the valve core passing through the vertex, the vertex is laterally offset from the valve body by Di, the flushing fluid impact position of the outer flushing port is laterally offset from the valve seat by Dii, the angle between the fluid extension line of the outer flushing port and L satisfies 60°-90°, and Dii / Di satisfies 0.4-0.6.

[0011] In summary, this utility model has the following beneficial effects: the cleaning component enables quick and convenient cleaning of residual fluid; the clamping block fits well with the ball valve, reducing the seepage of residual liquid into the gaps caused by opening and closing the valve core; and the operating control block allows the clamping block to move away from the valve core, enabling deep cleaning of the contact surface between the valve core and the clamping block. Attached Figure Description

[0012] Figure 1 This is a top sectional view of this embodiment;

[0013] Figure 2 This is a magnified view of a portion of point A in this embodiment;

[0014] Figure 3 This is a schematic diagram of the geometric parameters of this embodiment;

[0015] Reference numerals: 1. Valve body; 11. Inlet; 12. Outlet; 13. Movable cavity; 131. Control port A; 132. Control port B; 14. Water inlet; 141. Fluid passage; 2. Valve core; 21. Waste liquid outlet; 3. Clamping block; 31. Control block; 311. Opening; 4. Cleaning component; 41. Internal flushing port; 42. External flushing port; 5. Gap cavity; 6. L; 7. Di; 8. Dii. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] This embodiment discloses a cleaning ball valve, such as Figures 1 to 2As shown, the valve includes a valve body 1, a valve core 2, and a valve seat. The valve body 1 has a liquid inlet 11 and a liquid outlet 12 that are connected. The valve core 2 has two states: open and closed. A cleaning component 4 is provided on the valve body 1. The valve core 2 is equipped with a movable clamping block 3. The clamping block 3 has a closed state that is close to the valve core 2 and an open state that is away from the valve core 2. The clamping block 3 in the closed state can clamp the valve core 2 to reduce the leakage of fluid medium into the gap between the valve core 2 and the valve body 1 when the valve core 2 rotates or the valve body 1 is working. The clamping block 3 is provided with a control block 31 for controlling its movement. The valve body 1 is provided with a movable cavity 13 that is adapted to the control block 31. When the control block 31 moves, it will drive the clamping block 3 to move synchronously. The valve body 1 is provided with a control port A131 and a control port B132. The control port A131 and the control port B132 are respectively connected to the two ends of the movable cavity 13 and are used to operate the control block 31 to move left and right within the movable cavity 13. When liquid enters through control port A131, the liquid flows into the left end of the movable chamber 13, pushing control block 31 to move to the right, causing clamping block 3 to move away from valve core 2; when liquid enters through control port B, the liquid flows into the right end of the movable chamber 13, pushing control block 31 to move to the left, causing clamping block 3 to approach and press against the outer surface of the ball valve to ensure good contact.

[0018] Further improvements include the following: the cleaning component 4 includes an external flushing port 42 located near the liquid outlet 12 and an internal flushing port 41 located near the inner side of the valve core 2. The clamping block 3 is provided with an opening 311, and the valve body 1 is provided with a water inlet 14 located on the outside of the valve body 1 for adding cleaning liquid. When the clamping block 3 is in the open state, the opening 311 connects the water inlet 14 and the external flushing port 42. When the valve core 2 is in the closed state, the internal flushing port 41 and the external flushing port 42 are connected to the external water inlet 14, and high-pressure fluid is directly sprayed to remove residual media from the inner and outer surfaces of the valve core 2, respectively, in the closed state. The opening 311 allows the clamping block 3 to control the opening of the external flushing port 42, ensuring that the external flushing port 42 is normally open when the valve body 1 is being cleaned and closed when the valve body 1 is in operation, thus preventing fluid leakage from the pipeline.

[0019] Further improvements include the following: when the clamping block 3 is in the open state, a gap cavity 5 is formed between the clamping block 3 and the valve core 2. The valve body 1 is provided with a fluid channel 141 connecting the gap cavity 5 and the water inlet 14. During cleaning, the cleaning fluid will also clean the open gap cavity 5, ensuring that the medium brought into the gap of the valve core 2 and clamping block 3 during operation and rotation is cleaned. The fluid channel 141 allows clean fluid to be directly sprayed into the gap cavity 5, avoiding insufficient cleaning caused by residual cleaning wastewater.

[0020] To further improve the design, the valve body 1 is provided with a waste liquid port 21 that connects to the inner cavity of the valve core 2, and the waste liquid port 21 connects to the liquid outlet 12. The waste liquid port 21 is used to discharge the waste liquid used for cleaning the inner cavity of the valve core 2. At the same time, the setting of the waste liquid port 21 helps to balance the internal air pressure of the valve core 2 and avoid the operation of the inner cleaning port being affected by air pressure.

[0021] To further improve the design, at least two external flushing ports 42 are evenly arranged around the circumference of the valve body 1. The arrangement of multiple external flushing ports 42 facilitates the spraying of cleaning media to cover the entire circumferential surface of the valve core 2, avoiding dead corners or uneven cleaning caused by single-point flushing. Furthermore, the synergistic effect of multiple flushing streams can remove contaminants more quickly, shorten cleaning time, and is more effective against stubborn stains or highly adhesive impurities.

[0022] like Figure 3 As shown, the inner flushing port 41 forms an angle with the inner surface of the valve core 2. In the closed state, there is an axial extension line L6 of the valve core 2 passing through the vertex, a lateral offset Di7 between the vertex and the valve body 1, and a lateral offset Dii8 between the flushing fluid impact position of the outer flushing port 42 and the valve seat. The angle between the fluid extension line of the outer flushing port 42 and L6 is 60°-90°, and Dii8 / Di7 is 0.4-0.6. The angle between the fluid extension line of the outer flushing port 42 and L6 is preferably 60°-90°. The acute angle design (such as 60°) allows for flexible adjustment of the inlet axial position, providing strong adaptability. The Dii8 / Di7 is 0.4-0.6, and the curvature of the spherical surface of the valve core 2 increases first and then decreases from the valve seat to the vertex. The impact point corresponding to the 0.4-0.6 ratio is located in the "golden curvature segment" of the spherical surface (the radius of curvature is approximately 1.2-1.5 times the radius of the sphere). At this point, after the fluid impacts the spherical surface of valve core 2, the adhering flow generated by the Coanda effect can extend along the curved surface to the far side of the spherical valve core 2, covering more than 85% of the outer surface area of ​​valve core 2. This design ensures that the fluid can adhere to and extend to the far side of the spherical curved surface at the optimal curvature. While reducing the amount of purging fluid, it effectively improves the removal rate, shortens the cleaning time, and reduces the risk of residue solidification and jamming, combining cost and reliability advantages.

[0023] Working principle of this utility model

[0024] During operation, the clamping block 3 presses the valve core 2 to reduce the seepage of pipeline fluid into the gap between the valve core 2 and the clamping block 3. During cleaning, the valve core 2 rotates and closes, and liquid enters through the control port A131. The clamping block 3 will move away from the valve core 2 under the action of the control block 31. The external flushing port 42 is connected to the water inlet 14. When the water inlet 14 starts working, the cleaning fluid will spray out from the internal flushing port 41 and the external flushing port 42 to clean the inner cavity and outer surface of the valve core 2. After cleaning, the waste liquid flushed from the inner cavity of the valve core 2 will be discharged from the waste liquid port 21 to the outlet port 12 and discharged together. Liquid is introduced into the control port B132 to make the clamping block 3 reset, approach and press the valve core 2.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cleaning ball valve, comprising a valve body (1), a valve core (2), and a valve seat, wherein the valve body (1) is provided with a liquid inlet (11) and a liquid outlet (12) communicating with each other, and the valve core (2) has two states: open and closed, characterized in that: The valve body (1) is provided with a cleaning component (4); the valve core (2) is provided with a movable clamping block (3), the clamping block (3) has a closed state close to the valve core (2) and an open state away from the valve core (2), the clamping block (3) is provided with a control block (31) for controlling the movement, the valve body (1) is provided with an active cavity (13) adapted to the control block (31); the valve body (1) is provided with a control port A (131) and a control port B (132), the control port A (131) and the control port B (132) respectively connect to both ends of the active cavity (13) for operating the control block (31) to move left and right in the active cavity (13).

2. A cleaning ball valve according to claim 1, characterized in that: The cleaning component (4) includes an external flushing port (42) arranged near the liquid outlet (12) and an internal flushing port (41) near the inside of the valve core (2). The clamping block (3) is provided with an opening (311), and the valve body (1) is provided with a water inlet (14). When the clamping block (3) is in the open state, the opening (311) will make the water inlet (14) and the external flushing port (42) connected.

3. A cleaning ball valve according to claim 2, characterized in that: When the clamping block (3) is in the open state, a gap cavity (5) will be formed between the clamping block (3) and the valve core (2), and the valve body (1) is provided with a fluid channel (141) connecting the gap cavity (5) and the water inlet (14).

4. A cleaning ball valve according to claim 2, characterized in that: The valve body (1) is provided with a waste liquid port (21) that connects to the inner cavity of the valve core (2), and the waste liquid port (21) connects to the liquid outlet (12).

5. A cleaning ball valve according to claim 2, characterized in that: At least two external flushing ports (42) are evenly arranged around the valve body (1).

6. A cleaning ball valve according to claim 2, characterized in that: The inner flushing port (41) forms an angle with the inner surface of the valve core (2); in the closed state, there is an axial extension line L (6) of the valve core (2) through the vertex, the lateral offset Di (7) between the vertex and the valve body (1), the flushing fluid impact position of the outer flushing port (42) and the lateral offset Di (8) between the valve seat, the angle between the fluid extension line of the outer flushing port (42) and L (6) satisfies 60°-90°, and Di (8) / Di (7) satisfies 0.4-0.6.

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