Three-way ball valve

Abstract

The three-way ball valve comprises a valve body, a valve rod and a ball core, an inlet and two outlets are formed in the valve body, an L-shaped channel is formed in the ball core, the channel comprises two channel openings, a filter cover is arranged outside the ball core, a through hole consistent with the channel openings in diameter is formed in the filter cover, and a filter screen covers the through hole. A first valve seat is arranged at the inlet, a second valve seat is arranged at the outlet, a control rod parallel to the valve rod is arranged on the filter cover, and a through cavity allowing the control rod to penetrate through and rotating in the circumferential direction of the valve rod is formed in the valve body. A fixing part for fixing the control rod and the valve body is arranged between the control rod and the valve body, the filter cover can be controlled to rotate along the ball core through the control rod, and after the filter cover rotates until the through hole is aligned with the inlet, the filter cover is fixed through the fixing part, and industrial water entering from the inlet can be filtered.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to a three-way ball valve. Background Art

[0002] The ball valve is one of the most common valves, which can regulate and control the fluid. The L-type three-way ball valve is a common ball valve, which is mainly composed of valve body, ball core, valve stem, valve seat and actuator. There are inlet and outlet on the valve body, and the valve seat and ball core are both set in the valve body. The channel of the ball core is L-shaped, and the ball core is connected to the actuator through the valve stem. By controlling the ball core, the switching of the medium flow direction can be flexibly controlled.

[0003] Different industries have different requirements for industrial water. Some companies use water from nearby rivers, lakes and other surface waters as industrial water. There are still a small amount of impurities in the coarsely filtered surface water, such as sand and debris. After the impurities enter the equipment through the pipe, they will accumulate in the equipment and affect the normal operation of the equipment.

[0004] In order to prevent the solid matter in the water from affecting industrial production, the utility model with application number 202421366498.9 discloses a three-way internal spiral ball valve, wherein filter tubes are provided at both ends of the valve body, and the filter tubes are connected to the valve body by mounting screws, and a filter disc is provided at one end of the filter tube close to the rotating shaft. Impurities in the water are filtered by the filter disc at the end of the filter tube.

[0005] However, in order to prevent the accumulation of filtered impurities affecting the water output, the above utility model needs to regularly disassemble the filter tube for cleaning, which is time-consuming and laborious. In addition, the filter plate is arranged in a plane, and impurities are easily spread on the entire filter plate to block the filter plate, shortening the cleaning interval of the filter tube. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a three-way ball valve which is less likely to be clogged than the filter tube of the prior art and is more convenient to clean.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a three-way ball valve, including a valve body, a valve stem and a ball core, the valve body is provided with an inlet and two outlets, the ball core is provided with an L-shaped channel, the channel includes two channel openings, a filter cover is provided outside the ball core, the filter cover is provided with a through hole with the same diameter as the channel opening, the through hole is covered with a filter screen, the surface of the filter screen facing away from the ball core and the surface of the filter cover facing away from the ball core are located on the same virtual spherical surface, a valve seat 1 is provided at the inlet, a valve seat 2 is provided at the outlet, a control rod parallel to the valve stem is provided on the filter cover, the valve body is provided with a through cavity for the control rod to pass through and rotate along the circumference of the valve stem, and a fixing member for fixing the control rod to the valve body is provided between the control rod and the valve body.

[0008] By adopting the above scheme, the filter cover can be controlled to rotate along the ball core by the control rod. After the filter cover is rotated until the through hole is aligned with the inlet, it is fixed by the fixing piece, so that the industrial water entering from the inlet can be filtered.

[0009] Compared with the prior art, after a certain amount of impurities are accumulated on the filter net of the present invention, it is not necessary to disassemble the filter cover for cleaning. When it is necessary to remove the impurities accumulated on the filter net, first change the water outlet location or set the filter net at the end of the pipeline, then release the fixing of the fixing part, and then control the filter cover to rotate along the rotation direction of the ball core through the control rod, so that the filter cover leaves the inlet location, and the side wall of the valve seat can scrape off the impurities on the filter net. Under the impact of the water flow, the scraped impurities are directly discharged into the water intake site or remain on the filter net with the water flow. After the impurities on the filter net are removed, the filter cover can be rotated by the control rod to make the filter net cover the channel mouth again, and then the water outlet location can be changed back to the predetermined water outlet location or the filter net can be cancelled.

[0010] The filter screen of the present invention has an arc surface, so that the filtered impurities are not easy to spread on the entire filter screen. With the impact of water flow, the impurities will gather around the filter screen. Compared with the prior art, the cleaning cycle is longer.

[0011] As a further configuration of the present invention, the outer wall of the filter cover is provided with a plurality of convex strips 1 extending along the rotation direction of the filter cover, the valve seat 1 and the valve seat 2 are provided with movable grooves for the convex strip 1 to move along the rotation direction of the ball core, and the movable grooves are provided with a plurality of convex strips 2 offset from the convex strip 1.

[0012] With the above solution, after the convex strip 1 enters the moving groove, the convex strip 1 and the convex strip 2 are arranged one by one, and the convex strip 1 and the convex strip 2 are abutted. The cooperation between the convex strip 1 and the convex strip 2 can make the filter cover rotate more stably, and at the same time can better scrape off the impurities accumulated on the filter net.

[0013] Preferably, there are at least three convex strips, and the distances between adjacent convex strips are consistent.

[0014] As a further configuration of the present invention, the valve seat 1 and the valve seat 2 are both made of elastic material and are both annular, the convex strip 2 is provided with a sealing lip extending toward the adjacent convex strip 2, and the end of the convex strip 1 is an arc surface.

[0015] With the above solution, the sealing lip and the convex strip 2 are integrally arranged, and when the convex strip 1 is separated from the valve seat 1 or the valve seat 2, the gap between the adjacent convex strips 2 can be sealed to improve the sealing effect. The shape of the end of the convex strip 1 facilitates the convex strip 1 to enter between two adjacent convex strips 2.

[0016] As a further configuration of the present invention, an inner edge of the valve seat 1 is provided with an annular frame made of a hard material, and the frame is provided with an opening for the convex strip 1 to enter the movable groove.

[0017] By adopting the above solution, impurities accumulated on the filter screen can be scraped off better, and at the same time, the impurities can be prevented from damaging the valve seat 1, thereby extending the service life of the valve seat 1.

[0018] As a further configuration of the present invention, when the control rod rotates along the rotation direction of the ball core until it abuts against the inner wall of the through cavity, the inlet and the filter cover are completely misaligned; when the control rod is located in the middle of the through cavity, the filter cover completely covers the inlet.

[0019] The above scheme is adopted to facilitate operator control.

[0020] As a further configuration of the present invention, a cross section of the outer wall of the filter cover along the rotation direction of the core is an arc less than or equal to 90°.

[0021] The above solution is adopted to facilitate the assembly of the filter cover and prevent the filter cover from affecting the water outlet of the channel.

[0022] As a further configuration of the present invention, the valve body includes a platform, the through cavity is arranged on the platform, the control rod is located at one end outside the valve body and is provided with an operating rod or an operating disk, the fixing part includes a movable rod, the operating rod or the operating disk is provided with a movable hole with both ends extending in the direction close to the platform, the movable rod is penetrated in the movable hole, the platform is provided with a fixing groove, the movable rod is provided with a limiting end that can form a limit with the hole opening of the movable hole facing away from the platform; when the limiting end forms a limit with the hole opening of the movable hole facing away from the platform, the end of the movable rod away from the limiting end is inserted into the fixing groove; when the movable rod is inserted into the fixing groove, the filter screen completely covers the inlet.

[0023] By adopting the above solution, when rotation is required, the movable rod is firstly disengaged from the fixed groove, and then the operating disk or the operating rod can be rotated, which has a simple structure and is easy to operate.

[0024] As a further configuration of the present invention, the movable rod is a square rod, the movable hole is a circular hole for the movable rod to rotate, and the fixed groove is a square groove.

[0025] Adopting the above scheme can achieve a better fixing effect.

[0026] As a further configuration of the present invention, protruding columns are provided on the two opposite outer walls of the movable rod, and a limiting groove for the protruding column to be embedded is provided on the inner wall of the movable hole, and the limiting groove is connected with the hole opening of the movable hole facing away from the valve core; when the limiting end forms a limit with the hole opening of the movable hole facing away from the ball core, the protruding column is located in the embedding groove.

[0027] By adopting the above scheme, when the control lever needs to be rotated, the movable rod is lifted away from the fixing hole to disengage the boss from the embedded groove and rotated to a certain angle to prevent the movable rod from moving toward the platform and interfering with the movement of the operating rod or operating panel.

[0028] As a further configuration of the present invention, a limiting groove for embedding the convex column is provided at the opening of the movable hole facing away from the valve core, and the groove depth of the limiting groove is smaller than the groove depth of the embedding groove. When the convex column is located in the limiting groove, the end of the movable rod away from the limiting end is located in the movable hole or is flush with the opening of the movable hole facing the valve core.

[0029] By adopting the above solution, the movable rod is kept relatively fixed with the operating rod or the operating disk when the operating rod or the operating disk moves.

[0030] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Attached Figure 1 It is an external schematic diagram of a specific embodiment of the present invention;

[0032] Attached Figure 2 It is a cross-sectional view of a specific embodiment of the present invention;

[0033] Attached Figure 3 It is a schematic diagram of a filter cover according to a specific embodiment of the present invention;

[0034] Attached Figure 4 This is a schematic diagram of the assembly of a valve seat 1 and a frame according to a specific embodiment of the present invention;

[0035] Attached Figure 5 This is a schematic diagram of a valve seat 2 according to a specific embodiment of the present invention;

[0036] Attached Figure 6 It is a schematic diagram of a movable rod in a specific embodiment of the present invention;

[0037] Attached Figure 7 Schematic diagram of the movable hole in a specific embodiment of the present invention

[0038] Attached Figure 8 It is a schematic diagram of a platform according to a specific embodiment of the present invention.

[0039] Valve body 1, inlet 11, outlet 12, platform 13, fixed groove 131, through cavity 14, valve stem 2, ball core 3, channel 31, channel opening 311, filter cover 4, through hole 41, filter screen 42, control rod 43, operating rod 44, movable hole 441, embedding groove 442, limiting groove 443, notch 45, convex strip 1 46, valve seat 1 5, valve seat 2 6, movable groove 7, convex strip 2 71, sealing lip 711, movable rod 8, limiting end 81, boss 82, skeleton 9, opening 91. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that, unless otherwise specified, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. used in the description to indicate the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] Specific embodiments of the present invention are shown in the accompanying drawings.

[0043] A three-way ball valve includes a valve body 1, a valve stem 2 and a ball core 3. The valve body 1 is provided with an inlet 11 and two outlets 12. The ball core 3 is provided with an L-shaped channel 31, and the channel 31 includes two channel openings 311. A filter cover 4 is provided outside the ball core 3. The filter cover 4 is provided with a through hole 41 with the same diameter as the channel opening 311. The through hole 41 is covered with a filter screen 42. The surface of the filter screen 42 facing away from the ball core 3 and the surface of the filter cover 4 facing away from the ball core 3 are located on the same virtual spherical surface. A valve seat 1 5 is provided at the inlet 11, and a valve seat 2 6 is provided at the outlet 12.

[0044] The valve body 1 includes a platform 13, a control rod 43 parallel to the valve stem 2 is provided on the filter cover 4, and a through cavity 14 is provided on the platform 13 for the control rod 43 to pass through and rotate along the circumferential direction of the valve stem 2. An operating rod 44 extending in a direction away from the valve stem 2 is provided at one end of the control rod 43 located outside the valve body 1, and a movable hole 441 extending in a direction close to the platform 13 and having two ends passing through is provided on the operating rod 44, and a movable rod 8 is passed through the movable hole 441, and a fixing groove 131 is provided on the platform 13, and a limiting end 81 is provided on the movable rod 8 that can form a limit with the hole of the movable hole 441 facing away from the platform 13. When the limiting end 81 forms a limit with the hole of the movable hole 441 facing away from the platform 13, the end of the movable rod 8 away from the limiting end 81 is inserted into the fixing groove 131.

[0045] When the filter cover 4 is in the filtering state, the filter screen 42 completely covers the inlet 11 and can filter the industrial water entering the channel opening 311 from the inlet 11. At this time, the movable rod 8 is inserted into the fixing groove 131 to keep the filter cover 4 and the valve body 1 relatively fixed.

[0046] Compared with the prior art, after a certain amount of impurities are accumulated on the filter screen 42 of the present invention, it is not necessary to disassemble the filter cover 4 for cleaning. When it is necessary to remove the impurities accumulated on the filter screen 42, first change the water outlet location or set a filter screen at the end of the pipeline, then disengage the movable rod 8 from the fixed groove 131, and then control the filter cover 4 to rotate along the ball core 3 through the operating rod 44. The side wall of the valve seat 15 can scrape off the impurities on the filter screen 42 and make the filter cover 4 leave the location of the inlet 11. Under the impact of the water flow, the scraped impurities are directly discharged into the water intake site or remain on the filter screen along with the water flow. After the impurities on the filter screen 42 are removed, the filter cover 4 can be rotated by the control rod 43 to make the filter screen 42 cover the channel opening 311 again, and then the water outlet location can be changed back to the predetermined water outlet location or the filter screen can be cancelled.

[0047] The filter screen 42 of the present invention is an arc surface, so that the filtered impurities are not easily spread on the entire filter screen 42. With the impact of water flow, the impurities will gather around the filter screen 42. Compared with the prior art, the cleaning cycle is longer.

[0048] In this embodiment, a notch 45 surrounding the valve stem 2 is provided on the filter cover 4 to facilitate the rotation of the filter cover 4 .

[0049] In this embodiment, the outer wall of the filter cover 4 is provided with five convex strips 46 extending along the rotation direction of the filter cover 4, and the distances between adjacent convex strips 46 are consistent. The valve seat 1 5 and the valve seat 2 6 are provided with a moving groove 7 for the convex strip 46 to move along the rotation direction of the ball core 3, and the moving groove 7 is provided with a plurality of convex strips 71 staggered with the convex strip 46. After the convex strip 46 enters the moving groove 7, the convex strip 46 and the convex strip 71 are arranged one by one, and the cooperation of the convex strip 46 and the convex strip 71 can make the filter cover 4 rotate more stably, and at the same time, the impurities accumulated on the filter screen 42 can be scraped off better.

[0050] In this embodiment, the filter cover 4, the filter net 42 and the convex strip 46 are integrally arranged. If the filter cover 4, the filter net 42 and the convex strip 46 are made of metal material, the filter cover 4, the filter net 42 and the convex strip 46 are welded and fixed. If the filter cover 4, the filter net 42 and the convex strip 46 are made of plastic material, the filter cover 4, the filter net 42 and the convex strip 46 are integrally injection molded.

[0051] The valve seat 1 5 and the valve seat 2 6 are both made of elastic material and are both annular. The convex strip 2 71 is provided with a sealing lip 711 extending toward the adjacent convex strip 2 71, and the end of the convex strip 1 46 is an arc surface. The sealing lip 711 is integrally arranged with the convex strip 2 71, and can seal the gap between the adjacent convex strips 2 71 when the convex strip 1 46 is separated from the valve seat 1 5 or the valve seat 2 6, thereby improving the sealing effect. The shape of the end of the convex strip 1 46 facilitates the convex strip 1 46 to enter between two adjacent convex strips 2 71.

[0052] The inner edge of the valve seat 5 is provided with an annular frame 9 made of hard material, and the frame 9 is provided with an opening 91 for the convex strip 46 to enter the movable groove 7. In this embodiment, a plurality of plugs are provided on the surface of the frame 9 facing the valve seat 5, and the valve seat 5 is provided with a slot for the plugs to be inserted. The frame 9 and the valve seat 5 can be fixed by the cooperation of the plugs and the slot. The frame 9 can better scrape off the impurities accumulated on the filter screen 42, and prevent the impurities from damaging the valve seat 5, so as to extend the service life of the valve seat 5.

[0053] When the control rod 43 rotates along the rotation direction of the ball core 3 until it abuts against the inner wall of the through cavity 14, the inlet 11 and the filter cover 4 are completely misaligned; when the control rod 43 is located in the middle of the through cavity 14, the filter cover 4 completely covers the inlet 11, which is convenient for operators to control.

[0054] In this embodiment, the cross section of the outer wall of the filter cover 4 along the rotation direction of the ball core 3 is an arc of 90°, which facilitates the assembly of the filter cover 4 and prevents the filter cover 4 from affecting the water outlet of the channel 31 .

[0055] The movable rod 8 is a square rod, the movable hole 441 is a circular hole for the movable rod 8 to rotate, and the fixing groove 131 is a square groove.

[0056] The two opposite outer walls of the movable rod 8 are provided with protruding columns 82, and the opening of the movable hole 441 facing away from the platform 13 is provided with an embedding groove 442 for the protruding columns 82 to be embedded in; when the limiting end 81 forms a limit with the opening of the movable hole 441 facing away from the core 3, the protruding columns 82 are located in the embedding groove 442. The protruding columns 82 of this embodiment are semi-cylindrical, and the diameter of the bottom surface of the protruding columns 82 is consistent with the side length of the bottom surface of the movable rod 8.

[0057] A limiting groove 443 for the convex column 82 to be embedded is provided on the inner wall of the movable hole 441. The limiting groove 443 is connected to the hole opening of the movable hole 441 facing away from the valve core. The groove depth of the limiting groove 443 is less than the groove depth of the embedding groove 442. When the convex column 82 is located in the limiting groove 443, the end of the movable rod 8 away from the limiting end 81 is located in the movable hole 441 or is flush with the hole opening of the movable hole 441 facing the valve core.

[0058] When it is necessary to rotate the control rod 43, lift the movable rod 8 in the direction away from the fixing hole so that the boss 82 disengages from the embedding groove 442, and rotate it at a certain angle so that the boss 82 is aligned with the limiting groove 443, and then the boss 82 is embedded in the limiting groove 443, so as to prevent the movable rod 8 from moving toward the direction close to the platform 13, so that the movable rod 8 and the operating rod 44 remain relatively fixed when the control rod 43 rotates along the through cavity 14, thereby preventing the movable rod 8 from interfering with the movement of the operating rod 44.

[0059] The present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art may adopt other various specific implementation modes to implement the present invention based on the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A three-way ball valve, comprising a valve body, a valve stem and a ball core, wherein the valve body is provided with an inlet and two outlets, and the ball core is provided with an L-shaped channel, wherein the channel comprises two channel openings, and wherein: A filter cover is provided outside the ball core, and the filter cover is provided with a through hole consistent with the diameter of the channel opening, and the through hole is covered with a filter screen, and the surface of the filter screen facing away from the ball core and the surface of the filter cover facing away from the ball core are located on the same virtual spherical surface, a valve seat 1 is provided at the inlet, and a valve seat 2 is provided at the outlet, a control rod parallel to the valve stem is provided on the filter cover, and a through cavity for the control rod to pass through and rotate along the circumference of the valve stem is provided on the valve body, and a fixing member for fixing the control rod to the valve body is provided between the control rod and the valve body.

2. A three-way ball valve according to claim 1, characterized in that: The outer wall of the filter cover is provided with a plurality of convex strips 1 extending along the rotation direction of the filter cover, and the valve seat 1 and valve seat 2 are provided with movable grooves for the convex strip 1 to move along the rotation direction of the ball core, and the movable grooves are provided with a plurality of convex strips 2 staggered with the convex strip 1.

3. A three-way ball valve according to claim 2, characterized in that: The valve seat 1 and the valve seat 2 are both made of elastic material and are both annular. The convex strip 2 is provided with a sealing lip extending toward the adjacent convex strip 2, and the end of the convex strip 1 is an arc surface.

4. A three-way ball valve according to claim 3, characterized in that: The inner edge of the valve seat 1 is provided with an annular frame made of hard material, and the frame is provided with an opening for the convex strip 1 to enter the moving groove.

5. A three-way ball valve according to claim 4, characterized in that: When the control rod rotates along the rotation direction of the ball core until it abuts against the inner wall of the through cavity, the inlet and the filter cover are completely misaligned; when the control rod is located in the middle of the through cavity, the filter cover completely covers the inlet.

6. A three-way ball valve according to claim 5, characterized in that: The cross section of the outer wall of the filter cover along the rotation direction of the ball core is an arc less than or equal to 90 degrees.

7. A three-way ball valve according to claim 6, characterized in that: The valve body includes a platform, the through cavity is arranged on the platform, the control rod is located at one end outside the valve body and is provided with an operating rod or an operating disk, the fixing part includes a movable rod, the operating rod or the operating disk is provided with a movable hole with two ends extending toward the direction close to the platform, the movable rod is penetrated in the movable hole, the platform is provided with a fixing groove, the movable rod is provided with a limiting end which can form a limit with the hole opening of the movable hole facing away from the platform; when the limiting end forms a limit with the hole opening of the movable hole facing away from the platform, the end of the movable rod away from the limiting end is inserted into the fixing groove; when the movable rod is inserted into the fixing groove, the filter screen completely covers the inlet.

8. A three-way ball valve according to claim 7, characterized in that: The movable rod is a square rod, the movable hole is a circular hole for the movable rod to rotate, and the fixed groove is a square groove.

9. A three-way ball valve according to claim 8, characterized in that: The two opposite outer walls of the movable rod are provided with convex columns, and the inner wall of the movable hole is provided with a limiting groove for the convex column to be embedded, and the limiting groove is connected with the hole opening of the movable hole facing away from the valve core; when the limiting end forms a limit with the hole opening of the movable hole facing away from the ball core, the convex column is located in the embedding groove.

10. A three-way ball valve according to claim 9, characterized in that: A limiting groove for embedding the convex column is provided at the opening of the movable hole facing away from the valve core, and the groove depth of the limiting groove is smaller than the groove depth of the embedding groove. When the convex column is located in the limiting groove, the end of the movable rod away from the limiting end is located in the movable hole or is flush with the opening of the movable hole facing the valve core.

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