A precision ball valve

Abstract

The utility model discloses a kind of precision ball valves, comprising: first connecting pipe, second connecting pipe, valve ball and filtering mechanism.Valve ball is installed in valve body, and valve ball top is clamped with control rod.Filtering mechanism is installed on first connecting pipe, and filtering mechanism includes: filter cavity, rotary sealing element, filter piece, first through-hole and control assembly.Filter cavity is located on first connecting pipe, and filter cavity bottom is sealed with sealing plate.Rotary sealing element rotates in filter cavity, and rotary sealing element is carved with the installation groove of semicircular shape on it.Rotor piece is installed in installation groove, and first through-hole is carved on the side wall of rotary sealing element away from valve body, and second through-hole consistent with it is provided in first connecting pipe at first through-hole place.Control assembly is installed on the side wall of filter cavity, for rotating rotary sealing element to drive.This utility model facilitates the removal and cleaning of filter screen in ball valve, thereby prolonging the service life of ball valve.

Description

Technical Field

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

[0002] Precision ball valves are a type of valve widely used in industrial, fluid control, and automation systems. A precision ball valve is driven by a valve stem that rotates around its axis. In pipelines, precision ball valves are mainly used for shut-off, distribution, and changing the flow direction of media. Because various fluid media pass through the ball valve, some contain impurities such as sediment and suspended solids. Over long-term use, these impurities may accumulate inside the valve body, eventually causing blockage and inconvenience.

[0003] To reduce clogging, existing ball valves typically have a filter screen installed inside. However, it is inconvenient to disassemble and clean the filter screen in existing ball valves. After long-term filtration, a large amount of filter residue will be generated on the filter end face and in the filter holes of the filter mechanism, and the presence of filter residue will also cause blockage of the pipeline.

[0004] Therefore, it is necessary to provide a precision ball valve to address the aforementioned technical problems.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a precision ball valve that solves the problem of inconvenient disassembly of the filter screen in existing ball valves.

[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0008] A precision ball valve includes: a first connecting pipe, a second connecting pipe, a valve ball, and a filter mechanism.

[0009] A valve body is fixed to one side of the first connecting pipe. A second connecting pipe is located on the side of the first connecting pipe closest to the valve body, and a sealing cap is fixed to the side of the second connecting pipe closest to the valve body. The sealing cap is fixed to one side of the valve body. A valve ball is installed inside the valve body, and a control rod is snapped onto the top of the valve ball. A handle is installed on the end of the control rod outside the valve body, and seals are installed on both sides of the valve ball.

[0010] The filtering mechanism is mounted on the first connecting pipe and includes a filter chamber, a rotary seal, a filter element, a first through hole, and a control component. The filter chamber is located on the first connecting pipe, and a sealing plate seals the bottom of the filter chamber. The rotary seal rotates within the filter chamber and has a semi-circular mounting groove. The filter element is mounted within the mounting groove. A first through hole is formed on the side wall of the rotary seal away from the valve body, and a second through hole corresponding to the first through hole is located within the first connecting pipe. The control component is mounted on the side wall of the filter chamber and is used to drive the rotary seal to rotate.

[0011] In one embodiment of this utility model, a groove is formed on the top of the valve ball, and a first locking head is fixed to the bottom of the control rod, the first locking head being engaged in the groove. The valve ball and the control rod are engaged with each other by the first locking head being engaged in the groove.

[0012] In one embodiment of this utility model, a locking block is fixed to one end of the control lever outside the valve body, and a second locking head is fixed to one end of the handle. The second locking head is locked onto the locking block, and a gasket is provided between the second locking head and the valve body. The control lever and the handle are engaged with each other by the second locking head being locked onto the locking block.

[0013] In one embodiment of this utility model, a threaded head is fixed to the top of the locking block, and a nut is threaded onto the threaded head. By tightening the nut onto the threaded head, the nut secures the second locking head to the locking block.

[0014] In one embodiment of this utility model, multiple pairs of lugs are fixed to both the sealing cover and the valve body, and bolts are tightened on each pair of lugs. The sealing cover and the valve body are fixedly connected by tightening bolts on the multiple pairs of lugs, thereby fixing the valve ball to the valve body.

[0015] In one embodiment of this utility model, a pair of semi-circular limiting rings are fixed to the filter element, and a retaining plate is fixed between the pair of limiting rings, with the retaining plate positioned in the middle of the limiting rings. When the filter element is engaged in the mounting groove, the two ends of the pair of semi-circular limiting rings respectively abut against the outer edge of the mounting groove, thereby preventing the filter element from rotating within the mounting groove. When it is necessary to remove the filter element from the mounting groove, the retaining plate is hooked, thereby pulling the filter element out of the mounting groove.

[0016] In one embodiment of this utility model, a sealing plug is provided on the sealing plate, and a groove is provided on the side of the sealing plug near the filter element. An elastic claw is fixed in the groove, and the elastic claw hooks onto the clamping plate. When the sealing plate is sealed at the bottom of the filter chamber, the sealing plug is inserted into the bottom of the filter chamber to increase the sealing performance. When it is necessary to clean impurities in the filter element, first rotate the rotating seal to make the rotating seal drive the filter element to rotate until the opening of the mounting groove faces the sealing plate. When the rotating seal drives the filter element to rotate until the elastic claw is positioned between a pair of limiting rings, the elastic claw opens outward. At this time, the top wall of the elastic claw adheres to the filter element. Then, continue to rotate the filter element so that the elastic claw hooks into the clamping plate. Then, when the sealing plate is opened, the filter element can be pulled out in one go.

[0017] In one embodiment of this utility model, a limiting block is fixed on the outer wall of the rotary seal near the first through hole, and a pair of limiting grooves adapted to the limiting block are chiseled on the bottom wall of the second through hole. The rotational position of the rotary seal is limited by the pair of limiting grooves and the limiting block. The positions of the pair of limiting grooves correspond to the positions when the first through hole and the second through hole are completely aligned and when they are completely misaligned, respectively.

[0018] In one embodiment of this utility model, the control component includes: a pair of first gears, a rotating shaft, and a pair of second gears. The pair of first gears are respectively fixed to both ends of the rotary seal. The rotating shaft rotates within the filter chamber and is located on one side of the rotary seal. The pair of second gears are both fixed to the rotating shaft, and each pair of second gears meshes with the pair of first gears. A knob is fixed to one end of the rotating shaft outside the filter chamber. When it is necessary to rotate the rotary seal, the knob drives the rotating shaft to rotate, which in turn drives the pair of second gears to rotate. The pair of second gears, through the pair of first gears, drive the rotary seal to rotate.

[0019] Compared with the prior art, the precision ball valve of this utility model, through its related structural design, facilitates the removal and cleaning of the filter screen in the ball valve, thereby extending the service life of the ball valve. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a precision ball valve according to one embodiment of the present invention;

[0022] Figure 2 This is an exploded view of a precision sphere according to one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the filter mechanism in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the rotary seal, filter and sealing plug in one embodiment of the present invention.

[0025] Explanation of key figure labels:

[0026] 1-First connecting pipe, 101-Valve body, 102-Second connecting pipe, 103-Sealing cap, 104-Valve ball, 105-Seal, 106-Control lever, 107-Slot, 108-First clamp, 109-Clamping block, 110-Threaded head, 111-Handle, 112-Second clamp, 113-Gasket, 114-Nut, 115-Ear plate, 116-Bolt, 2-Filter mechanism, 2 01-Filter chamber, 202-Sealing plate, 203-Rotary seal, 204-First through hole, 205-Second through hole, 206-Mounting groove, 207-Filter element, 208-Limiting ring, 209-Sealing plug, 210-Clamping plate, 211-Elastic cleaver, 212-First gear, 213-Second gear, 214-Rotating shaft, 215-Knob, 216-Limiting block, 217-Limiting groove. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0028] like Figures 1 to 4 As shown, a precision ball valve in one embodiment of the present invention includes: a first connecting pipe 1, a second connecting pipe 102, a valve ball 104, and a filter mechanism 2.

[0029] like Figures 1 to 4As shown, a valve body 101 is fixed to one side of the first connecting pipe 1. A second connecting pipe 102 is located on the side of the first connecting pipe 1 near the valve body 101, and a sealing cap 103 is fixed to the side of the second connecting pipe 102 near the valve body 101. The sealing cap 103 is fixed to one side of the valve body 101. A valve ball 104 is installed inside the valve body 101, and a control rod 106 is snapped onto the top of the valve ball 104. A handle 111 is installed on the end of the control rod 106 located outside the valve body 101, and sealing elements 105 are installed on both sides of the valve ball 104.

[0030] like Figures 1 to 4 As shown, the filter mechanism 2 is mounted on the first connecting pipe 1. The filter mechanism 2 includes: a filter chamber 201, a rotary seal 203, a filter element 207, a first through hole 204, and a control assembly. The filter chamber 201 is located on the first connecting pipe 1, and a sealing plate 202 is sealed at the bottom of the filter chamber 201. The rotary seal 203 rotates within the filter chamber 201, and a semi-circular mounting groove 206 is carved on the rotary seal 203. The filter element 207 is mounted within the mounting groove 206. A first through hole 204 is carved on the side wall of the rotary seal 203 away from the valve body 101, and a second through hole 205 corresponding to the first through hole 204 is provided inside the first connecting pipe 1. The control assembly is mounted on the side wall of the filter chamber 201 and is used to drive the rotary seal 203 to rotate.

[0031] When this device is in use, both ends of the first connecting pipe 1 and the second connecting pipe 102 are connected to the pipeline via flanges. One end of the first connecting pipe 1 is the water inlet, and one end of the second connecting pipe 102 is the water outlet. During use, the valve ball 104 is rotated by the handle 111 and the control rod 106, thereby opening and closing the valve. When fluid flows through this device, it first flows through the first through hole 204 and the second through hole 205 into the rotary seal 203, and then through the filter element 207 to filter impurities in the fluid. The intercepted impurities remain in the filter element 207. The filtered fluid continues to flow forward into the valve ball 104 and finally flows out from the second connecting pipe 102.

[0032] During the use of this device, it is necessary to periodically clean the impurities in the filter element 207 to prevent clogging of the filter screen. To clean the filter element 207, first rotate the valve ball 104 to the closed position using the handle 111. Then, rotate the rotary seal 203 using the control component, positioning it so that the first through hole 204 and the second through hole 205 are offset from each other. This offset position prevents fluid from flowing out of the second through hole 205. The rotation of the rotary seal 203 also simultaneously rotates the filter element 207, aligning the opening of the mounting groove 206 with the sealing plate 202. Then, open the sealing plate 202 from the bottom of the filter chamber 201, remove the filter element 207, and clean off any impurities. After cleaning, install the filter element 207 into the mounting groove 206, seal the bottom of the filter chamber 201 with the sealing plate 202, and rotate the rotating seal 203 to the corresponding position of the first through hole 204 and the second through hole 205.

[0033] like Figures 1 to 4 As shown, a groove 107 is cut into the top of the valve ball 104, and a first locking head 108 is fixed to the bottom of the control rod 106, which is engaged in the groove 107. The valve ball 104 and the control rod 106 are engaged in the groove 107 by the first locking head 108. A locking block 109 is fixed to one end of the control rod 106 outside the valve body 101, and a second locking head 112 is fixed to one end of the handle 111, which is engaged in the locking block 109. A gasket 113 is provided between the second locking head 112 and the valve body 101. The control rod 106 and the handle 111 are engaged in the locking block 109 by the second locking head 112.

[0034] like Figures 1 to 4 As shown, a threaded head 110 is fixed to the top of the locking block 109, and a nut 114 is threaded onto the threaded head 110. The nut 114 is tightened onto the threaded head 110, thereby fixing the second locking head 112 onto the locking block 109. Multiple pairs of lugs 115 are fixed to both the sealing cover 103 and the valve body 101, and each pair of lugs 115 is secured with a bolt 116. The sealing cover 103 and the valve body 101 are fixedly connected by tightening the bolts 116 on the multiple pairs of lugs 115, thereby fixing the valve ball 104 inside the valve body 101.

[0035] like Figures 1 to 4As shown, a pair of semi-circular limiting rings 208 are fixed on the filter element 207, and a retaining plate 210 is fixed between the pair of limiting rings 208, with the retaining plate 210 positioned in the middle of the limiting rings 208. When the filter element 207 is engaged in the mounting groove 206, the two ends of the pair of semi-circular limiting rings 208 respectively abut against the outer edge of the mounting groove 206, thereby preventing the filter element 207 from rotating within the mounting groove 206. When it is necessary to remove the filter element 207 from the mounting groove 206, the retaining plate 210 is hooked, thereby pulling the filter element 207 out of the mounting groove 206.

[0036] like Figures 1 to 4 As shown, a sealing plug 209 is provided on the sealing plate 202. A groove is provided on the side of the sealing plug 209 near the filter element 207, and an elastic claw 211 is fixed in the groove. The elastic claw 211 hooks onto the clamping plate 210. When the sealing plate 202 seals the bottom of the filter chamber 201, the sealing plug 209 is inserted into the bottom of the filter chamber 201 to increase the seal. When it is necessary to clean impurities from the filter element 207, first rotate the rotating seal 203 so that the rotating seal 203 drives the filter element 207 to rotate until the opening of the mounting groove 206 faces the sealing plate 202. When the rotating seal 203 drives the filter element 207 to rotate until the elastic claw 211 is positioned between a pair of limiting rings 208, the elastic claw 211 expands outwards. At this time, the top wall of the elastic claw 211 adheres to the filter element 207. Then, continue rotating the filter element 207 so that the elastic claw 211 hooks into the clamping plate 210. Then, when the sealing plate 202 is opened, the filter element 207 can be pulled out together.

[0037] like Figures 1 to 4 As shown, a limiting block 216 is fixed on the outer wall of the rotary seal 203 near the first through hole 204, and a pair of limiting grooves 217 adapted to the limiting block 216 are carved on the bottom wall of the second through hole 205. The rotational position of the rotary seal 203 is limited by the pair of limiting grooves 217 and the limiting block 216. The positions of the pair of limiting grooves 217 correspond to the positions when the first through hole 204 and the second through hole 205 are completely aligned and when they are completely misaligned, respectively.

[0038] like Figures 1 to 4As shown, the control assembly includes: a pair of first gears 212, a rotating shaft 214, and a pair of second gears 213. The pair of first gears 212 are respectively fixed to both ends of the rotary seal 203. The rotating shaft 214 rotates within the filter chamber 201 and is located on one side of the rotary seal 203. The pair of second gears 213 are both fixed to the rotating shaft 214, and each pair of second gears 213 meshes with the pair of first gears 212. A knob 215 is fixed to one end of the rotating shaft 214 outside the filter chamber 201. When the rotary seal 203 needs to be rotated, the knob 215 drives the rotating shaft 214 to rotate, which in turn drives the pair of second gears 213 to rotate. The pair of second gears 213, through the pair of first gears 212, drive the rotary seal 203 to rotate.

[0039] Working Principle: In operation, both ends of the first connecting pipe 1 and the second connecting pipe 102 are connected to the pipeline via flanges. One end of the first connecting pipe 1 is the inlet, and one end of the second connecting pipe 102 is the outlet. During operation, the valve ball 104 is rotated by the handle 111 and the control lever 106, thereby opening and closing the valve. When fluid flows through this device, it first flows through the first through hole 204 and the second through hole 205 into the rotary seal 203, and then through the filter element 207 to filter impurities. The intercepted impurities remain in the filter element 207. The filtered fluid continues to flow forward into the valve ball 104 and finally flows out from the second connecting pipe 102.

[0040] During the use of this device, it is necessary to periodically clean the impurities in the filter element 207 to prevent clogging of the filter screen. To clean the filter element 207, first rotate the valve ball 104 to the closed position using the handle 111. Then, the knob 215 drives the rotating shaft 214 to rotate. The rotating shaft 214 drives a pair of second gears 213 to rotate, which in turn drives a pair of first gears 212 to rotate the rotating seal 203. This rotates the rotating seal 203 to a position where the first through hole 204 and the second through hole 205 are offset from each other. This offset position of the first through hole 204 and the second through hole 205 prevents fluid from flowing out of the second through hole 205.

[0041] The rotation of the rotary seal 203 simultaneously drives the filter element 207 to rotate, aligning the opening of the mounting groove 206 with the sealing plate 202. After the rotary seal 203 rotates the filter element 207 until the elastic claw 211 is positioned between the pair of limiting rings 208, the elastic claw 211 expands outwards, its top wall adhering to the filter element 207. The filter element 207 continues to rotate until the elastic claw 211 hooks into the retaining plate 210. Then, the sealing plate 202 is opened from the bottom of the filter chamber 201, and as it is pulled outwards, the filter element 207 is pulled out of the mounting groove 206. Impurities on the filter element 207 are then cleaned. After cleaning, the filter element 207 is installed back into the mounting groove 206, the sealing plate 202 seals the bottom of the filter chamber 201, and the rotary seal 203 is rotated to the corresponding position of the first through hole 204 and the second through hole 205.

[0042] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precision ball valve, characterized in that, include: A first connecting pipe, on one side of which a valve body is fixed; The second connecting pipe is located on the side of the first connecting pipe near the valve body, and a sealing cap is fixed on the side of the second connecting pipe near the valve body. The sealing cap is fixed on one side of the valve body. A valve ball is installed inside the valve body. A control rod is snapped onto the top of the valve ball. A handle is installed on one end of the control rod outside the valve body. Sealing elements are installed on both sides of the valve ball. and A filtering mechanism is installed on a first connecting pipe. The filtering mechanism includes a filtering chamber, a rotary seal, a filter element, a first through hole, and a control component. The filtering chamber is located on the first connecting pipe, and a sealing plate is sealed at the bottom of the filtering chamber. The rotary seal rotates within the filtering chamber, and a semi-circular mounting groove is carved on the rotary seal. The filter element is installed in the mounting groove. A first through hole is carved on the side wall of the rotary seal away from the valve body. A second through hole corresponding to the first through hole is provided in the first connecting pipe. The control component is installed on the side wall of the filtering chamber and is used to drive the rotary seal to rotate.

2. The precision ball valve according to claim 1, characterized in that, The valve ball has a groove on its top, and the control rod has a first locking head fixed at its bottom, which is engaged in the groove.

3. A precision ball valve according to claim 2, characterized in that, The control lever has a locking block fixed at one end outside the valve body, and a second locking head is fixed at one end of the handle. The second locking head is locked onto the locking block, and a gasket is provided between the second locking head and the valve body.

4. A precision ball valve according to claim 3, characterized in that, The top of the card block is fixed with a threaded head, and a nut is threaded onto the threaded head.

5. A precision ball valve according to claim 1, characterized in that, Both the sealing cover and the valve body are fixed with multiple pairs of lugs, and each pair of lugs is tightened with bolts.

6. A precision ball valve according to claim 1, characterized in that, A pair of semi-circular limiting rings are fixed on the filter element, and a retaining plate is fixed between the pair of limiting rings, with the retaining plate located in the middle of the limiting rings.

7. A precision ball valve according to claim 6, characterized in that, A sealing plug is provided on the sealing plate, and a groove is provided on the side of the sealing plug near the filter element. An elastic claw is fixed in the groove and hooks onto the plate.

8. A precision ball valve according to claim 1, characterized in that, A limiting block is fixed on the outer wall of the rotary seal near the first through hole, and a pair of limiting grooves adapted to the limiting block are chiseled on the bottom wall of the second through hole.

9. A precision ball valve according to claim 1, characterized in that, The control component includes: A pair of first gears are fixed to both ends of the rotary seal; A rotating shaft, rotatable within the filter chamber, is located on one side of the rotary seal; and A pair of second gears are fixed on the rotating shaft, and the pair of second gears mesh with a pair of first gears respectively.

10. A precision ball valve according to claim 9, characterized in that, A knob is fixed at one end of the rotating shaft outside the filter chamber.

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