CN210003849U - A gate valve with a bypass - Google Patents

Abstract

The utility model discloses a gate valve with a bypass, which comprises a valve body, a valve cover, a top cover, a gear box, a first gear, a first end gear, a valve stem, a limiting shaft, a nut, a sleeve stem and a valve disc , The first valve handle, the rotating rod, the turntable, the second gear, the second end gear, the fixed plate, the push rod, the connecting pipe, the bypass valve, the sealing cover, the second valve handle and the fixed rod. The gate valve with bypass has a simple structure and is easy to operate, and the opening of the sealing plug is beneficial to the pressure relief inside the valve body through the connecting pipe, which improves the convenience of operation and avoids the problem of difficulty in opening the gate valve. It avoids the problem that the sudden opening of the gate valve may easily lead to the sudden influx of fluid, and avoids the problem of damage to the valve body and the pipeline; by opening the gate valve, the bypass valve is also opened, which is beneficial to ensure the pressure difference on both sides of the gate valve. Similarly, the convenience of operation is improved, the operation is convenient, and the complexity of the operation is reduced.

Description

A gate valve with a bypass

technical field

The utility model relates to a gate valve, in particular to a gate valve with a bypass, which belongs to the technical field of gate valve application.

Background technique

The gate valve is an opening and closing gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed through the contact between the valve seat and the gate, usually sealed. The surface will be surfacing metal materials to increase wear resistance, such as stainless steel, etc. The gate has a rigid gate and an elastic gate. According to the different gates, the gate valve is divided into a rigid gate valve and an elastic gate valve. On the bypass pipe of the pipe section, the valves used to fill the water to balance the water pressure before and after the inlet valve, such as pressure reducing valves, control valves and steam traps, are usually equipped with bypass pipes, and the valves installed on the bypass pipes are called Bypass valve. The term bypass valve refers to a valve installed on a bypass line, but does not specifically refer to valve type and construction. The bypass valve is also known as the self-operated bypass differential pressure valve, the self-operated self-pressure differential control valve, and the self-operated self-pressure differential control valve is an alternative product of the electric differential pressure control valve.

At present, the gate valve with bypass on the market is a protection measure for the main valve through the bypass valve to prevent the opening resistance due to the excessive pressure difference between the front and rear of the valve, and the valve is not easy to open. For the open gate valve, since the gate valve needs to be vented through the bypass valve before opening during operation, it is easy to cause the sudden influx of fluid when the gate valve is opened, and it is also easy to cause the problem of difficulty in opening the gate valve; and the bypass valve needs to be opened when in use. After the pressure relief of the through valve, the gate valve can only be opened by closing the bypass valve, which increases the complexity of the operation, increases the difficulty of operation, and is not conducive to the rapid opening of the gate valve. Therefore, a gate valve with bypass is proposed to solve the above problems.

Utility model content

The purpose of the present invention is to provide a gate valve with a bypass in order to solve the above problems. The utility model achieves the above purpose through the following technical solutions, a gate valve with bypass, comprising a valve cover installed on the top of the valve body, an opening mechanism and a pressure relief mechanism;

The opening mechanism includes a valve body, a valve cover, a top cover, a gear box, a first gear, a first end gear, a valve stem, a limit shaft, a nut, a sleeve rod, a valve disc, a first valve handle, a rotating rod, and a turntable. , the second gear, the second end gear, the fixing plate and the push rod, the valve body top pipe is sealed and fixedly connected to the valve cover through bolts, the top of the valve cover is fixedly connected to the top cover, and the top of the top cover is connected to the gear The box is fixedly connected, the inside of the gear box is rotatably connected with the first gear, the first gear is meshed with the first end gear, the first end gear is fixedly connected with the top of the valve stem, the middle of the valve stem is connected with the limit The shaft is fixedly connected, the bottom end of the valve rod is threadedly connected with the nut, the nut is fixedly connected with the inside of the sleeve rod, the side wall of the sleeve rod is fixedly connected with the valve disc, and the first gear is fixed with the first valve handle The edge of the first valve handle is rotatably connected with the end of the rotating rod, and the other end of the rotating rod is rotatably connected with the side wall of the turntable, the turntable is fixedly connected with the second gear, and the second gear is connected with the second The end gear is meshed and connected, the bottom end of the second end gear is rotatably connected with the middle part of the fixing plate, and the bottom end of the second end gear is fixedly connected with the push rod;

The pressure relief mechanism includes a valve body, a connecting pipe, a bypass valve, a sealing cover, a second valve handle and a fixing rod, the side wall of the valve body is communicated with the connecting pipe, and the connecting pipes are communicated with the bypass valve, The top end of the connecting pipe is screwed with the sealing cover, the top end of the bypass valve is rotatably connected with the second valve handle, and the top end of the second valve handle is fixedly connected with the fixing rod.

Preferably, the first gear and the first valve handle are respectively located on two sides of the gear box, and the first gear and the first valve handle are fixedly connected by a rotating shaft.

Preferably, the valve stem penetrates through the gear box, the top cover and the valve cover respectively and extends to the inside of the sleeve rod, and the valve flap on the side wall of the sleeve rod is slidably connected to the inside of the valve body.

Preferably, the number of the connecting pipes is two, the ends of the two connecting pipes are respectively located on both sides of the valve flap, and both the connecting pipes are connected with the sealing cover by sealing threads.

Preferably, both the turntable and the second gear are rotatably connected to the side wall of the valve cover, and the edge of the turntable is rotatably connected to the end of the rotating rod.

Preferably, the number of the fixing rods is two, the two fixing rods are respectively fixedly connected to both sides of the top end of the second valve handle, and the two fixing rods are respectively in contact with the two ends of the push rod.

The beneficial effects of the present utility model are:

1. The gate valve with bypass has a simple structure and is easy to operate. The opening of the sealing cover is conducive to the pressure relief inside the valve body through the connecting pipe, which improves the convenience of operation and avoids the problem of difficulty in opening the gate valve. It also avoids the problem that the sudden opening of the gate valve easily leads to the sudden influx of fluid, and avoids the problem of damage to the valve body and pipeline;

2. The gate valve with bypass opens the gate valve and also opens the bypass valve, which is beneficial to ensure the same pressure difference on both sides of the gate valve, improves the convenience of operation, facilitates the operation, and helps to reduce the complexity of the operation. difficulty.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

Fig. 1 is the front view structure schematic diagram of the present utility model;

Fig. 2 is the internal side view structure schematic diagram of the utility model;

FIG. 3 is a schematic diagram of the external side view of the utility model.

In the picture: 1. Valve body, 2. Bonnet, 3. Top cover, 4. Gear box, 5. First gear, 6. First face gear, 7. Valve stem, 8. Limit shaft, 9. Nut , 10, sleeve rod, 11, valve disc, 12, first valve handle, 13, rotating rod, 14, turntable, 15, second gear, 16, second face gear, 17, fixed plate, 18, push rod, 19, connecting pipe, 20, bypass valve, 21, sealing cover, 22, second valve handle, 23, fixing rod.

Detailed ways

In order to make the purpose, features and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for the convenience of describing the present utility model 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 a reference to the present utility model. limits.

Please refer to Figure 1-3, a gate valve with bypass, including a valve cover 2 installed on the top of the valve body 1, an opening mechanism and a pressure relief mechanism;

The opening mechanism includes valve body 1, valve cover 2, top cover 3, gear box 4, first gear 5, first end gear 6, valve stem 7, limit shaft 8, nut 9, sleeve rod 10, valve disc 11. The first valve handle 12, the rotating rod 13, the turntable 14, the second gear 15, the second end gear 16, the fixing plate 17 and the push rod 18, the valve body 1 top pipe is sealed and fixedly connected with the valve cover 2 through bolts , the top end of the valve cover 2 is fixedly connected with the top cover 3, and the top end of the top cover 3 is fixedly connected with the gear box 4 for the rotation of the first gear 5 and the first end gear 6. The gear box 4 is internally connected to The first gear 5 is connected in rotation, the first gear 5 is meshed with the first end gear 6 , the first end gear 6 is fixedly connected with the top end of the valve stem 7 , and the middle of the valve stem 7 is fixedly connected with the limit shaft 8 , and the bottom end of the valve rod 7 is threadedly connected with the nut 9, the nut 9 is fixedly connected with the inside of the sleeve rod 10, and the side wall of the sleeve rod 10 is fixedly connected with the valve flap 11 for the opening of the valve body 1, The first gear 5 is fixedly connected with the first valve handle 12, the edge of the first valve handle 12 is rotatably connected with the end of the rotating rod 13, and the other end of the rotating rod 13 is rotatably connected with the side wall of the turntable 14, so The turntable 14 is fixedly connected to the second gear 15, the second gear 15 is meshed with the second end gear 16, the bottom end of the second end gear 16 is rotatably connected to the middle of the fixing plate 17, and the second end gear 16 The bottom end is fixedly connected with the push rod 18 for opening the bypass valve 20;

The pressure relief mechanism includes a valve body 1, a connecting pipe 19, a bypass valve 20, a sealing cover 21, a second valve handle 22 and a fixing rod 23. The side wall of the valve body 1 communicates with the connecting pipe 19. The connecting pipe 19 is communicated with the bypass valve 20, and the top end of the connecting pipe 19 is threadedly connected with the sealing cover 21 for pressure relief inside the valve body 1, the top end of the bypass valve 20 is rotatably connected with the second valve handle 22, And the top end of the second valve handle 22 is fixedly connected with the fixing rod 23 .

The first gear 5 and the first valve handle 12 are respectively located on both sides of the gear box 4, and the first gear 5 and the first valve handle 12 are fixedly connected by a rotating shaft, which is convenient for the rotation of the first valve handle 12, It is convenient to drive the first gear 5 to rotate at the same time; the valve rod 7 respectively penetrates the gear box 4, the top cover 3 and the valve cover 2 and extends to the inside of the sleeve rod 10, and the valve flap 11 on the side wall of the sleeve rod 10 and the valve body 1. The internal sliding connection is convenient for the rotation of the valve stem 7 and the vertical movement of the valve flap 11; , and both of the connecting pipes 19 are connected with the sealing cover 21 by sealing threads, which is convenient for the internal communication of the valve body 1 and the tightening of the sealing cover 21; The edge of the turntable 14 is connected with the end of the rotation rod 13 in rotation, which is convenient for the rotation of the turntable 14 and the second gear 15, and it is convenient to drive the rotation rod 13 to rotate; the number of the fixed rods 23 is two, two Each of the fixing rods 23 is fixedly connected to both sides of the top end of the second valve handle 22 respectively, and two ends of the push rod 18 are in contact with each other between the two fixing rods 23, which facilitates the fixing of the fixing rods 23 and facilitates the push rod 23. The rod 18 drives the fixed rod 23 to rotate.

When the utility model is in use, when pressure relief needs to be performed, by rotating the first valve handle 12, the first valve handle 12 drives the rotating rod 13 to rotate, so that the rotating rod 13 drives the turntable 14 to rotate, and the rotation of the turntable 14 drives the second gear 15 rotates at the same time, thereby driving the second end gear 16 to rotate, and the second end gear 16 drives the push rod 18 to rotate on the fixed plate 17 between them at the same time. Push the fixed rod 20 to rotate, so that the fixed rod 20 drives the second valve handle 22 to rotate, and then the second valve handle 22 is rotated to open the bypass valve 20, so that the connecting pipe 19 is connected, so that the pressure on both sides of the valve body 1 is the same ;

When the first valve handle 12 is rotated, it drives the first gear 5 inside the gear box 4 to rotate, so that the first gear 5 drives the first end gear 6 to rotate, and then drives the valve stem 7 to rotate, the valve stem 7 drives the limit shaft 8 Rotating inside the top cover 3, the rotation of the valve stem 7 makes the nut 9 move vertically, the nut 9 drives the sleeve rod 10 to move at the same time, and then drives the valve flap 11 to move through the sleeve rod 10, so that after the valve flap 11 is opened, the flow of fluid is realized , the valve body 1 and the bypass valve 20 can be opened only by turning the first valve handle 12, which improves the convenience of operation; when the pressure on both sides of the valve body 1 is abnormal atmospheric pressure, the sealing cover can be opened 21 realizes the pressure relief on both sides of the bypass valve 20 and the valve body 1, and after tightening the sealing cover 21, the valve flap 11 and the bypass valve are opened, which is beneficial for the pressure inside the valve body 1 to return to normal.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and scope of the required identical elements are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim. As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention .

Claims (6)

1. A gate valve with a bypass, characterized in that it comprises a valve cover (2) installed on the top of the valve body (1), an opening mechanism and a pressure relief mechanism; The opening mechanism comprises a valve body (1), a valve cover (2), a top cover (3), a gear box (4), a first gear (5), a first face gear (6), a valve stem (7), Limit shaft (8), nut (9), sleeve rod (10), valve disc (11), first valve handle (12), rotating rod (13), turntable (14), second gear (15), The second face gear (16), the fixing plate (17) and the push rod (18), the valve body (1) top pipe is sealed and fixedly connected to the valve cover (2) through bolts, and the top end of the valve cover (2) is connected to the valve cover (2). The top cover (3) is fixedly connected, and the top end of the top cover (3) is fixedly connected with the gear box (4), the inside of the gear box (4) is rotatably connected with the first gear (5), and the first gear ( 5) It is meshed with the first end gear (6), the first end gear (6) is fixedly connected with the top end of the valve stem (7), and the middle part of the valve stem (7) is fixedly connected with the limit shaft (8), And the bottom end of the valve rod (7) is threadedly connected with the nut (9), the nut (9) is fixedly connected with the sleeve rod (10), and the side wall of the sleeve rod (10) is connected with the valve flap (11) Fixed connection, the first gear (5) is fixedly connected with the first valve handle (12), the edge of the first valve handle (12) is rotatably connected with the end of the rotating rod (13), and the rotating rod (13) ) The other end is rotatably connected with the side wall of the turntable (14), the turntable (14) is fixedly connected with the second gear (15), and the second gear (15) is meshed with the second end gear (16), so The bottom end of the second end gear (16) is rotatably connected to the middle of the fixing plate (17), and the bottom end of the second end gear (16) is fixedly connected to the push rod (18); The pressure relief mechanism includes a valve body (1), a connecting pipe (19), a bypass valve (20), a sealing cover (21), a second valve handle (22) and a fixing rod (23). 1) The side wall is communicated with the connecting pipe (19), the connecting pipes (19) are communicated with the bypass valve (20), and the top of the connecting pipe (19) is threadedly connected with the sealing cover (21). The top end of the bypass valve (20) is rotatably connected with the second valve handle (22), and the top end of the second valve handle (22) is fixedly connected with the fixing rod (23). 2. A gate valve with bypass according to claim 1, characterized in that: the first gear (5) and the first valve handle (12) are respectively located on both sides of the gear box (4), and The first gear (5) and the first valve handle (12) are fixedly connected through a rotating shaft. 3. A gate valve with bypass according to claim 1, characterized in that: the valve stem (7) penetrates through the gear box (4), the top cover (3) and the valve cover (2) respectively and extends to the inside of the sleeve rod (10), and the valve flap (11) of the side wall of the sleeve rod (10) is slidably connected to the inside of the valve body (1). 4. A gate valve with a bypass according to claim 1, characterized in that: the number of the connecting pipes (19) is two, and the ends of the two connecting pipes (19) are respectively located in the valve Both sides of the flap (11), and the two connecting pipes (19) are connected with the sealing cover (21) by sealing threads. 5. A gate valve with a bypass according to claim 1, characterized in that both the turntable (14) and the second gear (15) are rotatably connected to the side wall of the valve cover (2), and the The edge of the turntable (14) is rotatably connected with the end of the turning rod (13). 6 . The gate valve with bypass according to claim 1 , wherein the number of the fixing rods ( 23 ) is two, and the two fixing rods ( 23 ) are respectively connected with the second valve handle. 7 . Both sides of the top end of (22) are fixedly connected, and two ends of the push rod (18) are respectively contacted between the two fixed rods (23).

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