CN212106989U - Gate valve - Google Patents

Abstract

The utility model relates to a belong to valve technical field, and a gate valve. The problem solved by the sealing device is how to improve the stability while improving the sealing performance. This gate valve includes the valve body, the case, the lower liner, gland and oil cup, the inside of valve body sets up the case, the outside of case sealing washer is equipped with the valve body sealing washer, the top fixed mounting valve gap of valve body, the junction of valve gap and valve body is equipped with the gasket, the inside fixed mounting valve rod of valve gap, valve rod and case pass through square nut fixed connection, and fix with the spiral tail taper pin, valve gap and lower liner pass through double-screw bolt fixed connection, still the cover is equipped with the spring on the valve rod in the valve gap, the spring lower extreme supports and leans on the valve gap roof at case upper end and spring upper end, the case remains the trend of downstream all the time under the spring action. This gate valve advantage lies in having improved the leakproofness when having strengthened the stability of gate valve.

Description

Gate valve

Technical Field

The utility model relates to a belong to valve technical field, and a gate valve.

Background

The movement direction of the flashboard is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. The gate has two sealing surfaces, the two sealing surfaces of the most common mode gate valve form a wedge shape, which varies with the valve parameters. The flashboard on the current gate valve passes through the mounting groove of copper ring card income between valve body and the flashboard, realizes the location, and processing is troublesome, and the operation is complicated, and stability is relatively poor, and sealing performance receives the influence. The sealing performance between the gate plate and the valve body of the gate valve is easily affected by the valve rod and the hand wheel. Therefore, the problem of solving the above existing problem is that we are not ready to deal with things at present.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a gate valve. The technical problem solved by the sealing device is how to improve the stability while improving the sealing performance.

In order to realize the purpose, the utility model adopts the technical scheme that:

the utility model provides a gate valve, includes valve body, case, lower liner, gland and oil cup, the inside of valve body sets up the case, and the junction of valve body and case is sealed through the case sealing washer, and the bottom of valve body is equipped with the plug screw, and the outside of case sealing washer is equipped with the valve body sealing washer, its characterized in that, the top fixed mounting valve gap of valve body, the junction of valve gap and valve body are equipped with the gasket, and the inside fixed mounting valve rod of valve gap, valve rod and case pass through square nut fixed connection to fix with the spiral tail taper pin, valve gap and lower liner pass through double-screw bolt fixed connection, still the cover is equipped with the spring on the valve rod in the valve gap, the spring lower extreme supports and leans on the valve gap roof at case upper end and spring upper end, and the trend.

In the gate valve, the lower bushing is filled with the filler, the lower bushing is movably connected with the swing bolt through the pin shaft, the gland is fixedly arranged at the upper end of the lower bushing through the swing bolt, and the joint of the gland and the swing bolt is fixedly connected through the second nut.

In the above gate valve, the oil cup is fixedly mounted on the pressing cover, the oil cup is internally provided with an upper bushing, the inner part of the upper bushing is provided with a stuffing box, the top of the upper bushing is provided with a thrust ball bearing, the top of the oil cup is sealed by a bearing pressing cover, and a sealing ring is arranged between the thrust ball bearing and the bearing pressing cover.

In the gate valve, one side of the oil cup is provided with a sign, the sign and the oil cup are fixedly connected through a screw, and the sign is provided with a pointer.

The top end of the valve rod is provided with a hand wheel, the valve rod is fixedly connected with the hand wheel through a first nut, a gasket is arranged between the first nut and the hand wheel, and the top of the valve rod is provided with a split pin.

In the gate valve, the valve body and the valve cover are both made of stainless steel, and the surface of the valve body is plated with a zinc layer.

In the above gate valve, the gasket is made of a non-asbestos rubber plate, and the gasket is of a circular structure.

In the above gate valve, the inside of the oil cup is filled with hydraulic oil.

The utility model has the advantages that: according to the marine sluice valve, the valve body and the valve cover are made of stainless steel, so that the production cost is low, and the marine sluice valve is easy to machine and form; the surface of the valve body is plated with a zinc layer, so that the valve body is prevented from being corroded by seawater in long-term use, and the valve body is protected; the gasket is made of a non-asbestos rubber plate, so that the gasket is safe and environment-friendly and has excellent tensile property; the gasket is of a circular ring structure, has a good sealing effect, avoids water leakage caused by overlong time, and enhances the sealing property of the gate valve; the valve core is always abutted against the valve body through the arrangement of the spring, so that water leakage caused by looseness of a hand wheel or a valve rod is prevented, the stability of the gate valve is enhanced, and meanwhile, the sealing performance is improved; the inside of the oil cup is filled with hydraulic oil, so that the oil cup has a lubricating effect, and the gate valve can be quickly opened or closed through the valve rod; be equipped with the pointer on the sign, can know the switching condition of gate valve through observing the pointer.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a half sectional view of the present invention.

In the figure, 1, a valve body; 2. a valve core; 3. a square nut; 4. a gasket; 5. a valve cover; 6. a valve stem; 7. a lower bushing; 8. a filler; 9. a gland; 10. a stuffing box; 11. an upper bushing; 12. Pushing the ball bearing; 13. a bearing gland; 14. a hand wheel; 15. a gasket; 16. a first nut; 17. A cotter pin; 18. an indicator needle; 19. a sign; 20. a screw; 21. an oil cup; 22. a second nut; 23. an eye bolt; 24. a pin shaft; 25. a bolt; 26. a valve body sealing ring; 27. a valve core sealing ring; 28. a plug screw; 29. a screw tail taper pin; 30. a stud; 31. a seal ring; 32. a spring.

Detailed Description

As shown in fig. 1, a gate valve comprises a valve body 1, a valve core 2, a lower bushing 7, a gland 9 and an oil cup 21, wherein the valve core 2 is arranged inside the valve body 1, the joint of the valve body 1 and the valve core 2 is sealed by a valve core sealing ring 27, a plug screw 28 is arranged at the bottom of the valve body 1, a valve body sealing ring 26 is arranged outside the valve core sealing ring 27, a zinc layer is plated on the surface of the valve body 1, and the valve body 1 is prevented from being corroded by seawater when the gate valve is used for a long time, so that the valve body 1 is protected; the valve cover 5 is fixedly installed at the top of the valve body 1, the gasket 4 is arranged at the joint of the valve cover 5 and the valve body 1, the valve rod 6 is fixedly installed inside the valve cover 5, and the gasket 4 is made of a non-asbestos rubber plate, so that the valve is safe and environment-friendly and has excellent tensile property; the gasket 4 is of a circular ring structure, has a good sealing effect, avoids water leakage caused by overlong time, and enhances the sealing property of the gate valve; the valve rod 6 and the valve core 2 are fixedly connected through a square nut 3 and are fixed through a screw tail taper pin 29, and the valve body 1 and the valve cover 5 are both made of stainless steel, so that the production cost is low, and the valve is easy to machine and form; the valve cover 5 is fixedly connected with the lower bushing 7 through a stud 30; the lower bushing 7 is filled with the filling material 8, the lower bushing 7 is movably connected with the swing bolt 23 through a pin shaft 24, the gland 9 is fixedly arranged at the upper end of the lower bushing 7 through the swing bolt 23, and the joint of the gland 9 and the swing bolt 23 is fixedly connected through a second nut 22; the oil cup 21 is fixedly arranged on the gland 9, the inside of the oil cup 21 is filled with hydraulic oil, so that the oil cup has a lubricating effect, and the gate valve can be quickly opened or closed through the valve rod 6; an upper bushing 11 is arranged inside the oil cup 21, a stuffing box 10 is arranged inside the upper bushing 11, a thrust ball bearing 12 is arranged at the top of the upper bushing 11, the top of the oil cup 21 is sealed through a bearing gland 13, and a sealing ring 31 is arranged between the thrust ball bearing 12 and the bearing gland 13; an indication plate 19 is arranged on one side of the oil cup 21, the indication plate 19 is fixedly connected with the oil cup 21 through a screw 20, an indication needle 18 is arranged on the indication plate 19, and the opening and closing conditions of the gate valve can be known by observing the indication needle 18; the top end of the valve rod 6 is provided with a hand wheel 14 for opening or closing the gate valve, the valve rod 6 is fixedly connected with the hand wheel 14 through a first nut 16, a gasket 15 is arranged between the first nut 16 and the hand wheel 14, and the top of the valve rod 6 is provided with a split pin 17. The valve rod 6 in the valve cover 5 is also sleeved with a spring 32, the lower end of the spring 32 is abutted against the upper end of the valve core 2, the upper end of the spring 32 is abutted against the top wall of the valve cover 5, and the valve core 2 always keeps the trend of downward movement under the action of the elastic force of the spring 32. The valve core 2 is always abutted against the valve body 1 through the arrangement of the spring 32, so that water leakage caused by looseness of the hand wheel 14 or the valve rod 6 is prevented, the stability of the gate valve is enhanced, and meanwhile, the sealing performance is improved.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only for convenience of description, and are not intended to indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and therefore, are not to be considered as limitations of the present invention, and the fundamental principles, main features, and advantages of the present invention have been shown and described above, as would be understood by those skilled in the art.

Claims (8)

1. A gate valve comprises a valve body (1), a valve core (2), a lower bushing (7), a gland (9) and an oil cup (21), wherein the valve core (2) is arranged inside the valve body (1), the joint of the valve body (1) and the valve core (2) is sealed through a valve core sealing ring (27), a plug screw (28) is arranged at the bottom of the valve body (1), a valve body sealing ring (26) is arranged outside the valve core sealing ring (27), the gate valve is characterized in that a valve cover (5) is fixedly installed at the top of the valve body (1), a gasket (4) is arranged at the joint of the valve cover (5) and the valve body (1), a valve rod (6) is fixedly installed inside the valve cover (5), the valve rod (6) and the valve core (2) are fixedly connected through a square nut (3) and are fixed through a screw tail taper pin (29), the valve cover (5) and the lower bushing (7) are fixedly connected through a screw bolt (30), and a spring (32) is further sleeved on the, the lower end of the spring (32) abuts against the upper end of the valve core (2), the upper end of the spring (32) abuts against the top wall of the valve cover (5), and the valve core (2) always keeps a downward movement trend under the elastic force action of the spring (32).

2. A gate valve according to claim 1, characterized in that the lower bushing (7) is filled with the filler (8), the lower bushing (7) and the swing bolt (23) are movably connected by a pin (24), the gland (9) is fixedly mounted at the upper end of the lower bushing (7) by the swing bolt (23), and the joint of the gland (9) and the swing bolt (23) is fixedly connected by a second nut (22).

3. A gate valve according to claim 2, characterized in that the oil cup (21) is fixedly mounted on the gland (9), the oil cup (21) is provided with an upper bushing (11) inside, the upper bushing (11) is provided with a stuffing box (10) inside, the top of the upper bushing (11) is provided with a thrust ball bearing (12), the top of the oil cup (21) is sealed by a bearing gland (13), and a sealing ring (31) is arranged between the thrust ball bearing (12) and the bearing gland (13).

4. A gate valve according to claim 3, characterized in that one side of the oil cup (21) is provided with an indication plate (19), the indication plate (19) and the oil cup (21) are fixedly connected through a screw (20), and the indication plate (19) is provided with an indication needle (18).

5. A gate valve according to claim 4, characterized in that the top end of the valve rod (6) is provided with a hand wheel (14), the valve rod (6) and the hand wheel (14) are fixedly connected through a first nut (16), a gasket (15) is arranged between the first nut (16) and the hand wheel (14), and the top of the valve rod (6) is provided with a split pin (17).

6. A gate valve according to any of claims 1-5, characterized in that the valve body (1) and the valve cover (5) are made of stainless steel, and the surface of the valve body (1) is plated with a zinc layer.

7. A gate valve according to any of the claims 1-5, characterized in that the gasket (4) is made of non-asbestos rubber sheet, and that the gasket (4) has a ring-shaped structure.

8. A gate valve according to any of the claims 1-5, characterized in that the interior of the oil cup (21) is filled with hydraulic oil.

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