A PVC electric double-sided ball valve convenient to maintain

Abstract

The utility model discloses a kind of electric PVC bilateral by order ball valve convenient to maintain, it is related to PVC ball valve field, the device includes PVC ball valve main body and the servo motor being installed in the top of PVC ball valve main body, the top of PVC ball valve main body is rotatably provided with valve stem, servo motor is provided with rotating shaft, and bearing is installed between rotating shaft and servo motor, the top of valve stem is coaxially installed with rotating shaft, motor base is installed between the bottom of servo motor and PVC ball valve main body, cavity is provided in the top of motor base, bearing is located in the top of cavity, oil hole is provided on the lateral wall of cavity, lubricating oil is filled in cavity by high pressure through oil hole, so that lubricating oil is infiltrated to bearing, while lubricating oil flows down along rotating shaft and is infiltrated on valve stem, so as to be not disassembled to servo motor 2 in maintenance process, reduce maintenance difficulty, while reducing dismounting loss.

Description

Technical Field

[0001] This utility model relates to the field of PVC ball valves, and in particular to an easy-to-maintain electric PVC double-sided rudder ball valve. Background Technology

[0002] The electric PVC double-sided ball valve is a ball valve with a PVC body and threaded connectors at both ends for quick installation and removal from pipelines. A motor is installed on top, and the motor can optionally drive the shaft to rotate using a direct drive or gear mechanism, thereby achieving electric opening and closing of the entire valve body.

[0003] During installation, the motor is mounted via a motor mount and a flange on top of the valve seat. During use, there are two maintenance points: the bearing between the motor shaft and stator requires regular lubrication; the valve body and stem are made of PVC, which initially has a self-lubricating effect due to its surface treatment. However, with increased use, wear occurs due to rotational friction, especially in winter when the material expands and contracts with temperature changes, increasing friction and posing a risk of the valve stem breaking. Therefore, lubrication of the valve stem and body is also necessary. Traditional solutions require removing the motor for lubrication, and frequent disassembly and reassembly can easily damage the flange on top of the valve body. Therefore, a more easily maintained electric PVC double-sided ball valve is provided. Utility Model Content

[0004] The purpose of this invention is to provide an easy-to-maintain electric PVC double-sided ball valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-maintain electric PVC double-sided ball valve, comprising a PVC ball valve body and a servo motor mounted on the top of the PVC ball valve body. A valve stem is rotatably mounted on the top of the PVC ball valve body. A rotating shaft is provided in the servo motor, and a bearing is installed between the rotating shaft and the servo motor. The top of the valve stem is coaxially mounted with the rotating shaft. A motor base is installed between the bottom of the servo motor and the PVC ball valve body. A cavity is provided at the top of the motor base. The bearing is located at the top of the cavity. An oil injection hole is provided on the side wall of the cavity. Lubricating oil is injected into the cavity under high pressure through the oil injection hole, thereby lubricating oil wets the bearing. At the same time, the lubricating oil flows down along the rotating shaft to wet the valve stem.

[0006] Preferably, the top end of the valve stem is integrally formed with an external hexagonal shaft, which is movably inserted into the rotating shaft.

[0007] Preferably, a support ring is fixedly installed inside the cavity, and the top volume inside the cavity can be changed by adjusting the vertical installation height of the support ring inside the cavity.

[0008] Preferably, the outer part of the support ring is made of rubber so that the support ring and the cavity form a soft seal, the rotating shaft is rotatably connected in the support ring, and a gap is naturally formed between the rotating shaft and the support ring for the lubricating oil to flow downward.

[0009] Preferably, a sealing plug is threaded into the oil injection hole.

[0010] Preferably, the PVC ball valve body includes a valve body and a flange seat integrally formed on the top of the valve body, wherein an oil receiving bowl is detachably installed in the flange seat, and the top of the oil receiving bowl abuts against the support ring.

[0011] Preferably, the valve stem is rotatably connected in the oil receiving bowl, so that lubricating oil flows down the upper end of the valve stem into the oil receiving bowl, and then flows down the lower end of the valve stem into the valve body.

[0012] Preferably, the motor mount is bolted to the flange seat, the flange seat is fitted with a sealing ring, and the bottom of the motor mount is provided with a sealing groove that matches the sealing ring.

[0013] Preferably, a valve core is installed inside the valve body, and the valve stem is coaxially mounted with the valve core.

[0014] Preferably, the valve body has threaded connectors integrally formed at both ends, and threaded sleeves are threadedly connected to the threaded connectors, with heat-fusion pipes installed in the threaded sleeves.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This easy-to-maintain electric PVC double-sided ball valve pumps lubricating oil into the oil injection hole via a high-pressure pump, filling the cavity with lubricating oil. Before injection, the appropriate volume of lubricating oil is taken according to the reserved space volume of the cavity, ensuring that the lubricating oil completely fills the cavity. Then, the sealing plug is installed in the oil injection hole. At this time, the lubricating oil in the cavity is in contact with the bottom end of the bearing. As the shaft rotates, the lubricating oil wets the bearing. At the same time, the lubricating oil flows down the surface of the shaft to the outer surface of the valve stem. Then, the lubricating oil flows into the oil receiving bowl from the upper end of the valve stem, and then flows into the valve body from the bottom end of the oil receiving bowl along the lower end of the valve stem. This allows the lubricating oil to lubricate the valve body and the valve stem, thus eliminating the need to disassemble the servo motor 2 during maintenance, reducing maintenance difficulty, and minimizing disassembly and assembly losses. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall outer surface structure of this utility model;

[0018] Figure 2 This is an exploded view of the overall structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the surface structure of the valve body of this utility model;

[0020] Figure 4 This is a schematic diagram of the bottom structure of the servo motor of this utility model;

[0021] Figure 5 This is a cross-sectional view of the internal structure of the motor base of this utility model;

[0022] Figure 6 This is a cross-sectional schematic diagram of the connection structure between the motor base and the top of the valve body of this utility model.

[0023] In the diagram: 1. PVC ball valve body; 11. Valve body; 12. Threaded connector; 13. Threaded sleeve; 14. Heat fusion connector; 15. Valve stem; 16. External hexagonal shaft; 17. Flange seat; 18. Sealing ring; 19. Oil collection bowl; 110. Valve core; 2. Servo motor; 22. Motor base; 23. Rotating shaft; 24. Sealing groove; 25. Sealing plug; 26. Cavity; 27. Bearing; 28. Support ring; 29. ​​Oil injection hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides, for example Figures 1 to 6 The diagram shows an easy-to-maintain electric PVC double-sided ball valve, comprising a PVC ball valve body 1 and a servo motor 2 mounted on the top of the PVC ball valve body 1. A valve stem 15 is rotatably mounted on the top of the PVC ball valve body 1. A rotating shaft 23 is provided in the servo motor 2, and a bearing 27 is installed between the rotating shaft 23 and the servo motor 2. The top of the valve stem 15 is coaxially mounted with the rotating shaft 23. A motor base 22 is installed between the bottom of the servo motor 2 and the PVC ball valve body 1. A cavity 26 is provided at the top of the motor base 22. The bearing 27 is located at the top of the cavity 26. An oil injection hole 29 is provided on the side wall of the cavity 26. Lubricating oil is injected into the cavity 26 under high pressure through the oil injection hole 29, thereby lubricating oil wets the bearing 27. At the same time, the lubricating oil flows down along the rotating shaft 23 to wet the valve stem 15.

[0026] The top of the valve stem 15 is integrally formed with an external hexagonal shaft 16, which is movably inserted into the rotating shaft 23.

[0027] A support ring 28 is fixedly installed inside the cavity 26. The top volume inside the cavity 26 can be changed by adjusting the vertical installation height of the support ring 28 inside the cavity 26.

[0028] The outer part of the support ring 28 is made of rubber so that the support ring 28 and the cavity 26 form a soft seal. The rotating shaft 23 is rotatably connected in the support ring 28, and a gap is naturally formed between the rotating shaft 23 and the support ring 28 for the lubricating oil to flow downward.

[0029] The oil filling hole 29 is threaded with a sealing plug 25.

[0030] The PVC ball valve body 1 includes a valve body 11 and a flange seat 17 integrally formed on the top of the valve body 11. An oil receiving bowl 19 is detachably installed in the flange seat 17. The top of the oil receiving bowl 19 abuts against the support ring 28. The outer top of the oil receiving bowl 19 protrudes upward to form an annular support part for supporting the support ring 28. In use, by placing an annular washer on the top of the oil receiving bowl 19, the height of the support ring 28 is changed, thereby adjusting the volume of the cavity 26.

[0031] The valve stem 15 is rotatably connected to the oil receiving bowl 19 so that the lubricating oil flows down the upper end of the valve stem 15 and into the oil receiving bowl 19, and then flows down the lower end of the valve stem 15 into the valve body 11.

[0032] The motor mount 22 is bolted to the flange seat 17, and a sealing ring 18 is installed on the flange seat 17. A sealing groove 24 that matches the sealing ring 18 is opened at the bottom of the motor mount 22.

[0033] The valve body 11 houses the valve core 110, and the valve stem 15 is coaxially mounted with the valve core 110.

[0034] The valve body 11 has threaded connectors 12 integrally formed at both ends, and threaded sleeves 13 are threadedly connected to the threaded connectors 12. A heat fusion pipe 14 is installed in the threaded sleeves 13.

[0035] Working principle: When using this device, the hot melt connectors 14 at both ends are connected to the pipes at both ends with hot melt adhesive, and then the threaded sleeve 13 is threaded onto the threaded connector 12 to complete the installation. When in use, the device is connected to a motor controller, which controls the start and stop of the servo motor 2. The servo motor 2 drives the valve stem 15 to rotate through the rotating shaft 23, thereby causing the valve core 110 to rotate inside the valve body 11, thus realizing the opening and closing of the valve body 11.

[0036] During routine maintenance, lubricating oil is pumped into the oil injection hole 29 using a high-pressure pump, filling the cavity 26. Before injection, the appropriate volume of lubricating oil is taken according to the reserved space volume of the cavity 26, ensuring that the lubricating oil completely fills the cavity 26. Then, the sealing plug 25 is installed in the oil injection hole 29. At this time, the lubricating oil in the cavity 26 is in contact with the bottom end of the bearing 27. As the shaft 23 rotates, the lubricating oil wets the bearing 27. At the same time, the lubricating oil flows down along the surface of the shaft 23 to the outer surface of the valve stem 15. The lubricating oil then flows into the oil receiving bowl 19 from the upper end of the valve stem 15, and then flows into the valve body 11 from the bottom end of the oil receiving bowl 19 along the lower end of the valve stem 15. This allows the lubricating oil to lubricate the valve body 11 and the valve stem 15, thus eliminating the need to disassemble the servo motor 2 during maintenance, reducing maintenance difficulty, and minimizing disassembly and assembly losses.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A maintenance-friendly electric PVC double-sided servo ball valve, comprising a PVC ball valve body (1) and a servo motor (2) mounted on top of the PVC ball valve body (1), characterized in that, A valve stem (15) is rotatably mounted on the top of the PVC ball valve body (1). A rotating shaft (23) is provided in the servo motor (2), and a bearing (27) is installed between the rotating shaft (23) and the servo motor (2). The top of the valve stem (15) is coaxially mounted with the rotating shaft (23). A motor base (22) is installed between the bottom of the servo motor (2) and the PVC ball valve body (1). A cavity (26) is provided at the top of the motor base (22). The bearing (27) is located at the top of the cavity (26). An oil injection hole (29) is provided on the side wall of the cavity (26). Lubricating oil is injected into the cavity (26) under high pressure through the oil injection hole (29), so that the lubricating oil wets the bearing (27). At the same time, the lubricating oil flows down along the rotating shaft (23) to wet the valve stem (15).

2. The easy-to-maintain electric PVC double-sided ball valve according to claim 1, characterized in that, The valve stem (15) has an integrally formed external hexagonal shaft (16) at its top end, which is movably inserted into the rotating shaft (23).

3. The easy-to-maintain electric PVC double-sided ball valve according to claim 1, characterized in that, A support ring (28) is fixedly installed inside the cavity (26). By adjusting the vertical installation height of the support ring (28) inside the cavity (26), the top volume inside the cavity (26) can be changed.

4. The easy-to-maintain electric PVC double-sided ball valve according to claim 3, characterized in that, The outer part of the support ring (28) is made of rubber so that the support ring (28) and the cavity (26) form a soft seal. The rotating shaft (23) is rotatably connected in the support ring (28). A gap is naturally formed between the rotating shaft (23) and the support ring (28) for the lubricating oil to flow downward.

5. The easy-to-maintain electric PVC double-sided ball valve according to claim 1, characterized in that, A sealing plug (25) is threaded into the oil injection hole (29).

6. The easy-to-maintain electric PVC double-sided ball valve according to claim 3, characterized in that, The PVC ball valve body (1) includes a valve body (11) and a flange seat (17) integrally formed on the top of the valve body (11). An oil receiving bowl (19) is detachably installed in the flange seat (17), and the top of the oil receiving bowl (19) abuts against the support ring (28).

7. A maintenance-friendly electric PVC double-sided ball valve according to claim 6, characterized in that, The valve stem (15) is rotatably connected to the oil receiving bowl (19) so that the lubricating oil flows down the upper end of the valve stem (15) and enters the oil receiving bowl (19), and then flows down the lower end of the valve stem (15) into the valve body (11).

8. A maintenance-friendly electric PVC double-sided ball valve according to claim 6, characterized in that, The motor mount (22) is bolted to the flange seat (17), and a sealing ring (18) is installed on the flange seat (17). A sealing groove (24) adapted to the sealing ring (18) is opened at the bottom of the motor mount (22).

9. A maintenance-friendly electric PVC double-sided duct ball valve according to claim 6, characterized in that, The valve body (11) is equipped with a valve core (110), and the valve stem (15) is coaxially mounted with the valve core (110).

10. A maintenance-friendly electric PVC double-sided rubbing ball valve according to claim 6, characterized in that, The valve body (11) has threaded connectors (12) integrally formed at both ends, and threaded sleeves (13) are threadedly connected to the threaded connectors. A hot melt pipe (14) is installed in the threaded sleeves (13).

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