Ball valve easy to maintain

Abstract

The utility model discloses a ball valve easy to maintain, and relates to the technical field of ball valves. The ball valve easy to maintain comprises a valve body, a valve seat, a valve rod and a valve clack, the valve seat is located below the valve body, the valve rod is connected to the valve body, the valve clack is located on the inner side of the valve body, the valve body comprises a valve shell and connecting flanges, the connecting flanges are connected to the two ends of the valve shell, a first arc groove is formed in the bottom of the valve shell, and a second arc groove is formed in the bottom of the valve shell. An opening is formed in the connecting flange, and the connecting flange is used for being connected with a pipeline. According to the ball valve easy to maintain, the separable valve seat is arranged and comprises the seat plate and the positioning block, the positioning block is designed to be in a groove shape tightly connected with the valve clack in a clamped mode, the positioning block is matched with the valve seat sealing ring designed on the outer side of the positioning block, the sealing performance of the ball valve is guaranteed, and when the sealing ring needs to be replaced and the valve clack needs to be overhauled, only the valve seat needs to be detached; the whole ball valve is prevented from being disassembled, the workload of maintainers is reduced, and the maintenance speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve that is easy to maintain. Background Art

[0002] A ball valve is a common fluid control valve that controls the flow of fluid by rotating the ball. It has the characteristics of simple structure, good sealing, and easy operation, and is used in various fields. However, in actual use, since the ball valve is in a humid, low-temperature, and high-pressure environment for a long time, it is easy to cause the sealing gasket to age, deform, harden, and other damage.

[0003] The sealing gasket is the most frequently repaired and replaced internal part of the ball valve. The sealing gasket is inside the ball valve, and during use, the valve disc is in constant contact and friction with the valve body, which can easily cause the valve disc to wear and cause poor sealing effect. The valve disc needs to be inspected regularly, and the replacement of the sealing ring and valve disc requires disassembling the ball valve. To ensure the sealing effect, the ball valve needs to be connected to the pipeline through a flange, and the flange needs to be reinforced with a large number of screws. When disassembling and assembling the ball valve, the installation and tightening of a large number of screws are time-consuming and laborious.

[0004] Ball valves are prone to wear and tear during use, requiring frequent maintenance and replacement. The valve disc, due to friction from frequent opening and closing, can easily wear out, resulting in poor sealing performance. Regular valve disc inspection and maintenance are necessary. Both gasket replacement and disc inspection require disassembly of the ball valve, requiring the removal and installation of numerous screws, which is both time-consuming and labor-intensive. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the present invention provides an easy-to-maintain ball valve that solves the problems of gasket wear and tear during use, which requires frequent maintenance and replacement. The valve disc, due to friction caused by frequent opening and closing, can easily wear out the valve disc, resulting in poor sealing performance and the need for regular valve disc inspection and maintenance. Both gasket replacement and valve disc inspection require disassembly of the ball valve, which requires the removal of numerous screws and the time-consuming and labor-intensive installation.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a ball valve that is easy to maintain, comprising a valve body, a valve seat, a valve stem, and a valve disc, wherein the valve seat is located below the valve body, the valve stem is connected to the valve body, and the valve disc is located inside the valve body. The valve body comprises a valve housing and a connecting flange, wherein the connecting flange is connected to both ends of the valve housing, a first arc groove is formed at the bottom of the valve housing, and an opening is formed on the connecting flange, wherein the connecting flange is used to connect to a pipeline;

[0007] The valve seat includes a seat plate and a positioning block, the positioning block is fixedly connected to the top of the seat plate, the positioning block is tightly clamped on the inner side of the valve body, the seat plate is provided with arc-shaped evenly distributed connecting screw holes, connecting bolts are inserted into the connecting screw holes, a valve seat groove is provided on the top of the seat plate, and the valve seat groove is located between the connecting screw holes and the positioning block.

[0008] Preferably, a fixing platform is fixedly provided on the top of the valve housing, a second arc groove is opened on the inner side of the fixing platform, a sealing cover ring is threadedly connected to the top of the fixing platform, a clamping groove is opened on the inner side of the sealing cover ring, and the clamping groove corresponds to the position of the second arc groove.

[0009] Preferably, the valve seat further includes a valve seat sealing ring, which is clamped in the valve seat groove, and the top of the valve seat sealing ring abuts against the first circular arc groove.

[0010] Preferably, the valve stem includes a connecting rod and a valve stem sealing ring, the valve stem sealing ring is sleeved on the outside of the connecting rod, a valve stem groove is provided on the outside of the connecting rod, the valve stem groove corresponds to the second circular arc groove, the valve stem sealing ring is tightly clamped between the valve stem groove and the second circular arc groove, a turning handle is provided on the top of the connecting rod, and the turning handle is fixedly connected to the connecting rod by bolts.

[0011] Preferably, the valve flap includes a valve ball and a valve flap sealing ring, the valve flap sealing ring is sleeved on the outside of the valve ball, a threaded hole is provided on the top of the valve ball, the threaded hole is threadedly sleeved on the bottom of the connecting rod, valve flap slots are provided at both ends of the valve ball, the valve flap sealing ring is clamped in the valve flap slot, and the valve flap sealing ring is tightly abutted against the valve housing and the inner side of the positioning block.

[0012] The utility model discloses a ball valve which is easy to maintain, and has the following beneficial effects: a detachable valve seat is provided, comprising a seat plate and a positioning block, the positioning block is designed to be in the shape of a groove which is tightly engaged with the valve disc, and cooperates with the valve seat sealing ring designed on the outer side of the positioning block to ensure the sealing of the ball valve, and when it is necessary to replace the sealing ring and inspect the valve disc, it is only necessary to disassemble the valve seat, avoiding disassembly of the entire ball valve, thereby reducing the workload of maintenance personnel and improving maintenance speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the valve body of the utility model;

[0016] Figure 3 This is a structural diagram of the valve seat of the utility model;

[0017] Figure 4 This is a structural diagram of the valve stem of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the valve disc of the utility model.

[0019] In the figure: 1. Valve body; 11. Valve shell; 111. First arc groove; 12. Connecting flange; 121. Opening; 13. Fixing platform; 131. Second arc groove; 14. Sealing cover ring; 141. Clamping groove; 2. Valve seat; 21. Seat plate; 211. Connecting screw hole; 212. Connecting bolt; 213. Valve seat groove; 22. Positioning block; 23. Valve seat sealing ring; 3. Valve stem; 31. Connecting rod; 311. Valve stem groove; 32. Valve stem sealing ring; 33. Turning handle; 4. Valve disc; 41. Valve ball; 411. Threaded hole; 412. Valve disc clamping groove; 42. Valve disc sealing ring. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. 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 making any creative efforts are within the scope of protection of the present invention.

[0021] The embodiments of the present application provide an easy-to-maintain ball valve, solving the problem of gasket wear during use, which requires frequent maintenance and replacement. The valve disc, due to friction caused by frequent opening and closing, can easily wear out the valve disc, resulting in poor sealing performance and the need for regular valve disc inspection and maintenance. Both gasket replacement and valve disc inspection require disassembly of the ball valve, which is time-consuming and laborious to remove and install numerous screws. This achieves the goal of convenient and quick ball valve maintenance.

[0022] The embodiment of the utility model discloses a ball valve that is easy to maintain.

[0023] According to the attached Figure 1-5As shown, it includes a valve body 1, a valve seat 2, a valve stem 3 and a valve disc 4. The valve seat 2 is located below the valve body 1, the valve stem 3 is connected to the valve body 1, and the valve disc 4 is located inside the valve body 1. The valve body 1 includes a valve shell 11 and a connecting flange 12. The connecting flange 12 is connected to both ends of the valve shell 11. A first arc groove 111 is formed at the bottom of the valve shell 11, and an opening 121 is formed on the connecting flange 12. The connecting flange 12 is used to connect to a pipeline.

[0024] The valve seat 2 includes a seat plate 21 and a positioning block 22. The positioning block 22 is fixedly connected to the top of the seat plate 21. The positioning block 22 is tightly clamped on the inner side of the valve body 1. The seat plate 21 is provided with arc-shaped evenly distributed connecting screw holes 211. Connecting bolts 212 are inserted into the connecting screw holes 211. A valve seat groove 213 is provided on the top of the seat plate 21. The valve seat groove 213 is located between the connecting screw holes 211 and the positioning block 22.

[0025] A detachable valve seat 2 is provided, including a seat plate 21 and a positioning block 22. The positioning block 22 is designed to be in the shape of a groove that is tightly engaged with the valve disc 4. The valve seat sealing ring 23 designed on the outside of the positioning block 22 cooperates to ensure the sealing of the ball valve. When it is necessary to replace the sealing ring and inspect the valve disc 4, it is only necessary to disassemble the valve seat 2 to avoid disassembling the entire ball valve, thereby reducing the workload of maintenance personnel and improving maintenance speed.

[0026] Furthermore, a fixing platform 13 is fixedly provided on the top of the valve housing 11, and a second arc groove 131 is opened on the inner side of the fixing platform 13. A sealing cover ring 14 is threadedly connected to the top of the fixing platform 13, and a clamping groove 141 is opened on the inner side of the sealing cover ring 14. The clamping groove 141 corresponds to the position of the second arc groove 131.

[0027] Furthermore, the valve seat 2 further includes a valve seat sealing ring 23 . The valve seat sealing ring 23 is clamped in the valve seat groove 213 , and the top of the valve seat sealing ring 23 abuts against the first circular arc groove 111 .

[0028] It is particularly disclosed that the valve stem 3 includes a connecting rod 31 and a valve stem sealing ring 32. The valve stem sealing ring 32 is sleeved on the outside of the connecting rod 31. A valve stem groove 311 is provided on the outside of the connecting rod 31. The valve stem groove 311 corresponds to the second circular arc groove 131. The valve stem sealing ring 32 is tightly clamped between the valve stem groove 311 and the second circular arc groove 131. A turning handle 33 is provided on the top of the connecting rod 31, and the turning handle 33 is fixedly connected to the connecting rod 31 by bolts.

[0029] It is particularly disclosed that the valve flap 4 includes a valve ball 41 and a valve flap sealing ring 42. The valve flap sealing ring 42 is sleeved on the outside of the valve ball 41. A threaded hole 411 is provided on the top of the valve ball 41. The threaded hole 411 is threadedly sleeved on the bottom of the connecting rod 31. Valve flap grooves 412 are provided at both ends of the valve ball 41. The valve flap sealing ring 42 is clamped in the valve flap groove 412. The valve flap sealing ring 42 is tightly abutted against the valve housing 11 and the inner side of the positioning block 22.

[0030] Working principle: The ball valve is installed on the pipeline. When the sealing ring needs to be replaced and the valve disc 4 needs to be repaired, only the valve seat 2 needs to be disassembled.

[0031] First, suspend the use of the pipeline and drain the medium transmitted in the pipeline;

[0032] Then, loosen the connecting bolts 212 plugged into the bottom of the seat plate 21 to separate the valve seat 2 from the valve body 1. Then, remove the valve seat 2, rotate the valve stem 3 to remove the valve disc 4, and then inspect the valve disc 4. At this time, there is no valve disc blocking the valve body 1, which also makes it easier for maintenance personnel to replace the sealing ring.

[0033] Finally, after the inspection is completed, the sealing ring and the valve disc 4 are installed, and finally the valve seat 2 and the valve body 1 are tightly connected using the connecting bolts 212 to complete the inspection.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A ball valve that is easy to maintain, comprising a valve body (1), a valve seat (2), a valve stem (3) and a valve flap (4), wherein the valve seat (2) is located below the valve body (1), the valve stem (3) is connected to the valve body (1), and the valve flap (4) is located inside the valve body (1), characterized in that: The valve body (1) comprises a valve housing (11) and a connecting flange (12), wherein the connecting flange (12) is connected to both ends of the valve housing (11), a first arc groove (111) is provided at the bottom of the valve housing (11), and an opening (121) is provided on the connecting flange (12), and the connecting flange (12) is used for connecting a pipeline; The valve seat (2) includes a seat plate (21) and a positioning block (22), wherein the positioning block (22) is fixedly connected to the top of the seat plate (21), and the positioning block (22) is tightly clamped on the inner side of the valve body (1). The seat plate (21) is provided with arc-shaped evenly distributed connecting screw holes (211), and connecting bolts (212) are inserted into the connecting screw holes (211). A valve seat groove (213) is provided on the top of the seat plate (21), and the valve seat groove (213) is located between the connecting screw holes (211) and the positioning block (22).

2. The easy-to-maintain ball valve according to claim 1, characterized in that: A fixing platform (13) is fixedly provided on the top of the valve housing (11), a second arc groove (131) is provided on the inner side of the fixing platform (13), a sealing cover ring (14) is threadedly connected to the top of the fixing platform (13), a clamping groove (141) is provided on the inner side of the sealing cover ring (14), and the clamping groove (141) corresponds to the position of the second arc groove (131).

3. The easy-to-maintain ball valve according to claim 1, characterized in that: The valve seat (2) further comprises a valve seat sealing ring (23), the valve seat sealing ring (23) being clamped in the valve seat groove (213), and the top of the valve seat sealing ring (23) being in contact with the first circular arc groove (111).

4. The easy-to-maintain ball valve according to claim 1, characterized in that: The valve stem (3) includes a connecting rod (31) and a valve stem sealing ring (32), the valve stem sealing ring (32) is sleeved on the outside of the connecting rod (31), a valve stem groove (311) is provided on the outside of the connecting rod (31), the valve stem groove (311) corresponds to the second circular arc groove (131), the valve stem sealing ring (32) is tightly clamped between the valve stem groove (311) and the second circular arc groove (131), a turning handle (33) is provided on the top of the connecting rod (31), and the turning handle (33) is fixedly connected to the connecting rod (31) by bolts.

5. The easy-to-maintain ball valve according to claim 1, characterized in that: The valve flap (4) comprises a valve ball (41) and a valve flap sealing ring (42), wherein the valve flap sealing ring (42) is sleeved on the outside of the valve ball (41), a threaded hole (411) is provided on the top of the valve ball (41), and the threaded hole (411) is threadedly sleeved on the bottom of the connecting rod (31), and valve flap grooves (412) are provided at both ends of the valve ball (41), and the valve flap sealing ring (42) is clamped in the valve flap groove (412), and the valve flap sealing ring (42) is tightly abutted against the inner side of the valve housing (11) and the positioning block (22).

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