Filtering ball valve

Abstract

The application provides a filtering ball valve and belongs to the technical field of valves. The filtering ball valve solves the problem of low water passing efficiency of the existing ball valve. The filtering ball valve comprises a valve body provided with a water inlet channel and a water outlet channel, a cylinder body connected with the water inlet channel and the water outlet channel is arranged on the valve body, a ball core is arranged in the water inlet channel, a cylindrical filter screen is arranged in the cylinder body, a brush is arranged in the cylindrical filter screen, the brush comprises a roller body and brush hairs mounted on the roller body, the outer end of the roller body extends out of the cylindrical filter screen, a propeller is fixed to the inner end of the roller body, a supporting cylinder is screwed in the cylinder body, the supporting cylinder, the cylinder body and the cylindrical filter screen are coaxially arranged, and the outer end of the supporting cylinder extends out of the cylinder body; the outer end of the roller body extends into the supporting cylinder and the two are rotationally connected; a support is fixed to the outside of the supporting cylinder, the support comprises a sealing plate arranged opposite to the supporting cylinder, the supporting cylinder is between the cylindrical filter screen and the sealing plate, and the supporting cylinder can be pressed on the sealing plate and the outer port of the supporting cylinder is closed by the sealing plate. The filtering ball valve has high water passing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of valve technology and relates to a filter valve, particularly a filter ball valve. Background Technology

[0002] A filter ball valve is a type of filter valve that typically achieves filtration through a built-in filter screen.

[0003] Existing filter ball valves, such as the automatic sewage discharge filter ball valve disclosed in the Chinese Patent Database (application number: 201822209404.8), include a Y-shaped three-way valve body. The three-way valve body has an inlet chamber, an outlet chamber, and a sewage discharge chamber that are interconnected. A filter screen cylinder is installed inside the sewage discharge chamber to seal both the sewage discharge chamber and the outlet chamber. A first ball valve is installed at the outlet end of the sewage discharge chamber, and a second ball valve is installed at the inlet end of the inlet chamber. The first ball valve and the sewage discharge chamber are connected by a connecting cylinder. A fixed bracket is fixedly installed inside the connecting cylinder. A support column is fixedly installed on the frame. The support column is inserted into the sewage discharge chamber and is coaxially arranged with the sewage discharge chamber. A rotating cylinder is rotatably installed outside the support column. A support rod is fixedly installed outside the rotating cylinder. A brush is fixedly installed on the support rod. The brush is arranged parallel to the support column and is in contact with the inner wall of the filter cylinder. A propeller is fixedly installed coaxially outside the rotating cylinder. The propeller is located at the junction of the inlet chamber and the sewage discharge chamber. A limit block is detachably installed on the support column. The limit block restricts the rotating cylinder from moving axially along the support column.

[0004] When the ball valve is in use, the liquid medium drives the propeller to rotate, which in turn drives the brush to remove suspended or colloidal substances adsorbed on the inner wall of the filter screen, thus providing a good filter screen cleaning function. However, the relative positions of the brush and the filter screen are fixed. During normal use of the ball valve, the brush will also rotate with the fluid and block part of the filter screen holes, affecting the water flow efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a filter ball valve with high water flow efficiency and good sewage discharge effect.

[0006] The objective of this invention can be achieved through the following technical solution: A filter ball valve includes a valve body having an inlet channel and an outlet channel, a cylinder on the valve body connecting the inlet channel and the outlet channel, a ball core inside the inlet channel, a cylindrical filter screen inside the cylinder, a brush inside the cylindrical filter screen, the brush including a roller and bristles mounted on the roller, the outer end of the roller extending out of the cylindrical filter screen, and a propeller fixed at the inner end of the roller, characterized in that a support cylinder is screwed into the cylinder, the support cylinder, the cylinder body, and the cylindrical filter screen are coaxially arranged, and the outer end of the support cylinder extends out of the cylinder body; the outer end of the roller body extends into the support cylinder and the two are rotatably connected; a bracket is fixed outside the support cylinder, the bracket including a sealing plate disposed opposite the support cylinder, the support cylinder being located between the cylindrical filter screen and the sealing plate, and the support cylinder being able to press against the sealing plate and have its outer port sealed by the sealing plate.

[0007] The usage process is as follows:

[0008] During normal use, rotate the support cylinder outward to press it against the sealing plate. At this time, the sealing plate will close the outer end of the support cylinder. The brush will move with the support cylinder and detach from the cylindrical filter screen. Water will enter the cylinder through the inlet channel, be filtered by the cylindrical filter screen, and then be discharged into the outlet channel.

[0009] During sewage discharge, the support cylinder is rotated inward to extend into the cylinder body. At this time, the outer port of the support cylinder opens, and the brush moves with the support cylinder into the cylindrical filter screen. Water drives the propeller to rotate, which in turn drives the brush to brush off the suspended or colloidal matter adsorbed on the inner wall of the cylindrical filter screen. The brushed-off dirt is finally discharged through the outer port of the support cylinder, which has a good sewage discharge effect.

[0010] This application converts the rotation of the support cylinder into axial movement of the brush, allowing the brush to extend into or detach from the cylindrical filter screen. This effectively prevents the brush from blocking the filter holes of the cylindrical filter screen during normal operation of the filter ball valve, ensuring smooth water flow through the cylindrical filter screen and improving water flow efficiency.

[0011] Secondly, by abutting against the support cylinder, the sealing plate serves both to limit the outward movement distance of the support cylinder and to seal the outer port of the support cylinder. In this application, the sealing plate has a dual function, simplifying the structure and facilitating assembly.

[0012] In the aforementioned filter ball valve, a pressure ring is fixed inside the cylinder, allowing the brush and propeller to pass through. The pressure ring is coaxially arranged with the cylinder and positioned between the cylindrical filter screen and the support cylinder. A water passage hole is formed inside the valve body to connect the cylinder and the water inlet channel. Both ends of the cylindrical filter screen are tightly pressed against the edge of the water passage hole and the pressure ring, respectively. The inner end face of the support cylinder can press against the pressure ring. The pressure ring serves two purposes: limiting the inward movement distance of the support cylinder to allow the brush to move into place in one go, and also cooperating with the inner wall of the valve body to limit the cylindrical thread. Therefore, in this application, the pressure ring also has a dual function, simplifying the structure and further facilitating assembly.

[0013] In the aforementioned filter ball valve, the pressure ring is threaded to the cylinder body, and the inner hole of the pressure ring is a polygonal hole to facilitate the positioning of the pressure ring.

[0014] In the aforementioned filter ball valve, an annular groove is provided on the outer wall of the inner end of the support cylinder. The annular groove is coaxial with the support cylinder. An O-ring is provided in the annular groove, and the outer circumferential surface of the O-ring presses against the inner wall of the cylinder, effectively enhancing the sealing effect between the support cylinder and the cylinder body, preventing leakage, and ensuring stable operation of the ball valve.

[0015] In the aforementioned filter ball valve, an annular positioning groove is provided on the outer end face of the support cylinder. An annular sealing gasket is fixed in the positioning groove. One end face of the annular sealing gasket presses against the bottom wall of the positioning groove, and the other end face of the annular sealing gasket can press against the sealing plate to enhance the sealing effect of the sealing plate on the outer port of the support cylinder and further improve the working stability of the ball valve.

[0016] In the aforementioned filter ball valve, the support also includes a ring body that matches the cylinder body. The ring body is sleeved on the outside of the cylinder body and the two are fixedly connected. In this way, during assembly, the distance between the sealing plate and the support cylinder can be changed by sliding the ring body, which facilitates assembly and adjustment.

[0017] In the aforementioned filter ball valve, a connecting ring is integrally formed on the inner wall of the support cylinder. The connecting ring is coaxial with the support cylinder and sleeved on the roller body. Two pressure caps are screwed onto the outer end of the roller body, and the two pressure caps press against the two end faces of the connecting ring respectively. The roller body and the support cylinder are rotatably connected by clamping the connecting ring with the two pressure caps, which has the advantages of simple structure and convenient assembly.

[0018] As an alternative, in the aforementioned filter ball valve, a positioning ring is integrally formed on the inner wall of the support cylinder. The positioning ring is coaxial with the support cylinder and sleeved on the roller body. A bearing is provided between the roller body and the positioning ring, and the inner and outer rings of the bearing are fixedly connected to the roller body and the positioning ring, respectively. Using this design, a rotatable connection between the roller body and the support cylinder can also be achieved.

[0019] Compared with existing technologies, this filter ball valve has the following advantages:

[0020] 1. This application converts the rotation of the support cylinder into axial movement of the brush, allowing the brush to extend into or detach from the cylindrical filter screen. This effectively prevents the brush from blocking the filter holes of the cylindrical filter screen during normal operation of the filter ball valve, ensuring smooth water flow through the cylindrical filter screen and improving water flow efficiency.

[0021] 2. The sealing plate, by abutting against the support cylinder, serves both to limit the outward movement distance of the support cylinder and to seal the outer port of the support cylinder. In this application, the sealing plate has a dual function, simplifying the structure and facilitating assembly.

[0022] 3. The pressure ring serves two purposes: limiting the inward movement distance of the support cylinder to allow the brush to move into place in one go, and also cooperating with the inner wall of the valve body to limit the cylindrical thread. In this application, the pressure ring also has a dual function, simplifying the structure and further facilitating assembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the filter ball valve during sewage discharge.

[0024] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0025] Figure 3 This is a schematic diagram of the structure of a filter ball valve in normal use.

[0026] Figure 4 yes Figure 3 A magnified structural diagram at point B in the middle.

[0027] In the diagram, 1. Valve body; 1a. Inlet channel; 1b. Outlet channel; 1c. Cylinder; 1d. Water passage hole; 2. Ball core; 3. Valve stem; 4. Handwheel; 5. Cylindrical filter screen; 6. Brush; 6a. Roller; 6b. Brush bristles; 7. Propeller; 8. Support cylinder; 8a. Connecting ring; 9. Bracket; 9a. Sealing plate; 9b. Ring body; 10. Pressure ring; 11. Pressure cap; 12. O-ring; 13. Annular sealing gasket. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] Example 1

[0030] like Figure 1 As shown, this filter ball valve includes a valve body 1, an inlet channel 1a and an outlet channel 1b formed inside the valve body 1, a cylinder 1c formed on the valve body 1, the cylinder 1c being located between the inlet channel 1a and the outlet channel 1b, and a water passage 1d and a water guide hole formed inside the valve body 1 to connect the inlet channel 1a and the outlet channel 1b to the inner cavity of the cylinder 1c respectively.

[0031] in,

[0032] A ball core 2 is installed inside the water inlet channel 1a. The valve body 1 has a through hole connecting to the water inlet channel 1a, with the through hole directly opposite the ball core 2. A valve stem 3 is installed inside the through hole. The inner end of the valve stem 3 extends into the water inlet channel 1a and connects to the ball core 2, used to drive the ball core 2 to rotate and control the opening and closing of the water inlet channel 1a. The outer end of the valve stem 3 extends out of the through hole and connects to a handwheel 4. In the actual product, the valve stem 3 and the through hole are sealed with packing.

[0033] A cylindrical filter screen 5 is installed inside the cylindrical body 1c, and the cylindrical body 1c and the cylindrical filter screen 5 are arranged coaxially. A brush 6 is installed inside the cylindrical filter screen 5. The brush 6 is an existing product and is available on the market. The brush 6 includes a roller body 6a and bristles 6b installed on the roller body 6a. The bristles 6b are pressed against the inner wall of the cylindrical filter screen 5 to clean suspended or colloidal substances adsorbed on the inner wall of the cylindrical filter screen 5. The outer end of the roller body 6a extends out of the cylindrical filter screen 5, and a propeller 7 is fixed to the inner end of the roller body 6a.

[0034] like Figures 1 to 4 As shown, a support cylinder 8 is screwed into the cylinder 1c, and the support cylinder 8 and the cylinder 1c are arranged coaxially. The outer end of the support cylinder 8 extends out of the cylinder 1c and is located outside the valve body 1. The outer end of the roller 6a extends into the support cylinder 8, and the two are rotatably connected. At this time, the roller 6a and the support cylinder 8 are axially fixed and circumferentially rotated. A bracket 9 is fixed outside the support cylinder 8. The bracket 9 includes a sealing plate 9a disposed opposite the support cylinder 8. The support cylinder 8 is located between the cylindrical filter screen 5 and the sealing plate 9a, and the support cylinder 8 can press on the sealing plate 9a and have its outer port sealed by the sealing plate 9a.

[0035] In this embodiment,

[0036] like Figure 1 and Figure 2 As shown, the filter screen positioning method of the cylinder 1c is as follows: A pressure ring 10 is fixed inside the cylinder 1c, through which the brush 6 and propeller 7 can pass. The pressure ring 10 is coaxially arranged with the cylinder 1c and positioned between the cylindrical filter screen 5 and the support cylinder 8. The two ends of the cylindrical filter screen 5 are respectively pressed tightly against the edge of the water passage hole 1d and the pressure ring 10, and the inner end face of the support cylinder 8 can press against the pressure ring 10. The pressure ring 10 is used to limit the inward movement distance of the support cylinder 8, so that the brush 6 can move into place in one go, and also cooperates with the inner wall of the valve body 1 to limit the cylindrical thread. That is, in this application, the pressure ring 10 also has a dual function, simplifying the structure and further facilitating assembly. Preferably, the pressure ring 10 is threadedly connected to the cylinder 1c, and the inner hole of the pressure ring 10 is a polygonal hole to facilitate the positioning of the pressure ring 10.

[0037] The roller body 6a is connected to the support cylinder 8 as follows: a connecting ring 8a is integrally formed on the inner wall of the support cylinder 8. The connecting ring 8a is coaxial with the support cylinder 8 and is sleeved on the roller body 6a. Two pressure caps 11 are screwed onto the outer end of the roller body 6a. The two pressure caps 11 press on the two end faces of the connecting ring 8a respectively. It has the advantages of simple structure and convenient assembly.

[0038] The connection between the support 9 and the cylinder 1c is as follows: The support 9 is an integral structure, consisting of a ring 9b and an L-shaped frame. The shape and size of the ring 9b match those of the cylinder 1c. The ring 9b is fitted onto the cylinder 1c and the two are fixedly connected. Preferably, the ring 9b and the cylinder 1c are welded together. One end of the frame is connected to the ring 8a, and the other end of the frame is the aforementioned sealing plate 9a.

[0039] To further explain, such as Figure 2 As shown, an annular groove is formed on the outer wall of the inner end of the support cylinder 8. The annular groove is coaxial with the support cylinder 8. An O-ring 12 is provided in the annular groove, and the outer circumferential surface of the O-ring 12 presses against the inner wall of the cylinder 1c, effectively enhancing the sealing effect between the support cylinder 8 and the cylinder 1c, preventing leakage, and ensuring stable operation of the ball valve. An annular positioning groove is formed on the outer end face of the support cylinder 8. An annular sealing gasket 13 is fixed in the positioning groove. One end face of the annular sealing gasket 13 presses against the bottom wall of the positioning groove, and the other end face of the annular sealing gasket 13 can press against the sealing plate 9a to enhance the sealing effect of the sealing plate 9a on the outer port of the support cylinder 8, further improving the working stability of the ball valve.

[0040] The usage process is as follows:

[0041] like Figure 3 As shown, during normal use, the support cylinder 8 is rotated outward to press against the sealing plate 9a. At this time, the sealing plate 9a closes the outer port of the support cylinder 8, and the brush 6 moves with the support cylinder 8 to detach from the cylindrical filter screen 5. Water enters the cylinder 1c through the water inlet channel 1a, is filtered by the cylindrical filter screen 5, and is discharged into the water outlet channel 1b.

[0042] like Figure 1 As shown, during sewage discharge, the support cylinder 8 is rotated inward to extend into the cylinder 1c. At this time, the outer port of the support cylinder 8 opens, and the brush 6 moves with the support cylinder 8 into the cylindrical filter screen 5. Water drives the propeller 7 to rotate, thereby rotating the brush 6 to brush away the suspended matter or colloidal matter adsorbed on the inner wall of the cylindrical filter screen 5. The brushed-off dirt is finally discharged through the outer port of the support cylinder 8, which has a good sewage discharge effect.

[0043] This application converts the rotation of the support cylinder 8 into the axial movement of the brush 6, allowing the brush 6 to extend into or detach from the cylindrical filter screen 5. This effectively prevents the brush 6 from blocking the filter holes of the cylindrical filter screen 5 during normal operation of the filter ball valve, ensuring that water flows smoothly through the cylindrical filter screen 5 and improving water flow efficiency.

[0044] Secondly, by abutting against the support cylinder 8, the sealing plate 9a serves both to limit the outward movement distance of the support cylinder 8 and to seal the outer port of the support cylinder 8. In this application, the sealing plate 9a has a dual function, simplifying the structure and facilitating assembly.

[0045] Example 2

[0046] The structure and principle of this second embodiment are basically the same as those of the first embodiment, except that a positioning ring is integrally formed on the inner wall of the support cylinder 8. The positioning ring is coaxial with the support cylinder 8 and is sleeved on the roller body 6a. A bearing is provided between the roller body 6a and the positioning ring, and the inner and outer rings of the bearing are fixedly connected to the roller body 6a and the positioning ring, respectively. With the above design, the roller body 6a and the support cylinder 8 can also be rotatably connected.

[0047] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A filter ball valve, comprising a valve body (1) having an inlet channel (1a) and an outlet channel (1b), the valve body (1) having a cylindrical body (1c) communicating with the inlet channel (1a) and the outlet channel (1b), a ball core (2) being provided in the inlet channel (1a), a cylindrical filter screen (5) being provided in the cylindrical body (1c), a brush (6) being provided in the cylindrical filter screen (5), the brush (6) comprising a roller body (6a) and bristles (6b) mounted on the roller body (6a), the outer end of the roller body (6a) extending out of the cylindrical filter screen (5), and a propeller (7) fixed to the inner end of the roller body (6a), characterized in that, A support cylinder (8) is screwed into the cylinder body (1c). The support cylinder (8), the cylinder body (1c), and the cylindrical filter screen (5) are arranged coaxially, and the outer end of the support cylinder (8) extends out of the cylinder body (1c). The outer end of the roller body (6a) extends into the support cylinder (8) and the two are rotatably connected. A bracket (9) is fixed outside the support cylinder (8). The bracket (9) includes a sealing plate (9a) set opposite to the support cylinder (8). The support cylinder (8) is located between the cylindrical filter screen (5) and the sealing plate (9a), and the support cylinder (8) can press on the sealing plate (9a) and the outer port is sealed by the sealing plate (9a). The rotating support cylinder (8) drives the brush (6) to move axially, so that the brush selectively extends into or detaches from the cylindrical filter screen (5).

2. The filter ball valve according to claim 1, characterized in that, The aforementioned cylinder (1c) has a pressure ring (10) that allows the brush (6) and propeller (7) to pass through. The pressure ring (10) is coaxially arranged with the cylinder (1c) and located between the cylindrical filter screen (5) and the support cylinder (8). The valve body (1) has a water passage hole (1d) formed inside for connecting the cylinder (1c) and the water inlet channel (1a). The two ends of the cylindrical filter screen (5) are pressed tightly against the edge of the water passage hole (1d) and the pressure ring (10) respectively. The inner end face of the support cylinder (8) can press against the pressure ring (10).

3. The filter ball valve according to claim 2, characterized in that, The pressure ring (10) is threaded to the cylinder (1c), and the inner hole of the pressure ring (10) is a polygonal hole.

4. The filter ball valve according to claim 1, characterized in that, An annular groove is provided on the outer wall of the inner end of the support cylinder (8). The annular groove is coaxial with the support cylinder (8). An O-ring (12) is provided in the annular groove, and the outer circumferential surface of the O-ring (12) presses against the inner wall of the cylinder (1c).

5. The filter ball valve according to claim 1, characterized in that, The outer end face of the support cylinder (8) is provided with an annular positioning groove, and an annular sealing gasket (13) is fixed in the positioning groove. One end face of the annular sealing gasket (13) is pressed on the bottom wall of the positioning groove, and the other end face of the annular sealing gasket (13) can be pressed on the sealing plate (9a).

6. The filter ball valve according to claim 1, characterized in that, The support (9) also includes a ring (9b) that matches the cylinder (1c), the ring (9b) being sleeved on the outside of the cylinder (1c) and the two being fixedly connected.

7. The filter ball valve according to claim 1, characterized in that, A connecting ring (8a) is integrally formed on the inner wall of the support cylinder (8). The connecting ring (8a) is coaxial with the support cylinder (8) and sleeved on the roller body (6a). Two pressure caps (11) are screwed onto the outer end of the roller body (6a). The two pressure caps (11) press on the two end faces of the connecting ring (8a) respectively.

8. The filter ball valve according to claim 1, characterized in that, A positioning ring is integrally formed on the inner wall of the support cylinder (8). The positioning ring is coaxial with the support cylinder (8) and sleeved on the roller body (6a). A bearing is provided between the roller body (6a) and the positioning ring, and the inner ring and outer ring of the bearing are fixedly connected to the roller body (6a) and the positioning ring, respectively.

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