CN111998104A - Novel butterfly non-return combined valve - Google Patents

Abstract

The invention discloses a novel butterfly check combined valve, which relates to the technical field of combined valves, comprising a second valve body, one end of the second valve body is connected with a second sealing ring, and the second sealing ring is far away from One end of the second valve body is connected with the first valve body, the end of the second valve body close to the first valve body is threadedly connected with the first stud, and the inside of the second valve body is fixed on the side away from the first valve body A second butterfly valve flap is connected, a first nut is threadedly connected to the side of the first stud away from the second valve body, and a second valve is fixedly connected to the side of the first valve body close to the second valve body The first valve seat is fixedly connected to one end of the first valve body close to the second valve seat. The present invention can make the assembly and disassembly of the device more convenient through the cooperation between the first stud and the first nut and the cooperation between the second stud and the second nut installed inside the device.

Description

A new type of butterfly check valve

technical field

The invention relates to the technical field of combined valves, in particular to a novel butterfly check combined valve.

Background technique

At present, valves used in high-pressure water injection, petroleum, chemical and other industries are mostly composed of two valves, one ball valve and one check valve. The two valves of the ball valve and the check valve are connected by flanges or welded together. It is inconvenient to replace the damaged structural parts, most of which are replaced by the whole machine, and the later maintenance costs are relatively high.

In China Invention Patent Application No.: CN201721598141.3, an improved combined valve body is disclosed, which includes a check structure, a valve assembly, and a valve handle. The check structure is fixedly connected to the fluid output end of the valve assembly, and the valve assembly is provided with The lower valve port, the valve core, and the upper end sealing seat, the valve core has a conical structure, the conical small end of the valve core forms a two-half valve plate structure through the cutout, and the conical large end of the valve core is detachably fixed on the upper end of the valve assembly inside the seal. The improved combined valve body does not have a valve disc inside the device, so the valve control performance of the device is poor, and the sealing effect of the device is poor. During the working process, leakage will occur. Therefore, it can be troublesome in the installation process of the device.

Therefore, it is necessary to propose a new type of butterfly check combined valve to solve the above problems.

SUMMARY OF THE INVENTION

(1) Technical problems solved

The purpose of the present invention is: in order to solve the problems of troublesome assembly, poor valve control performance and poor sealing performance of the existing device, the present invention provides a novel butterfly check combined valve.

(2) Technical solutions

In order to achieve the above purpose, the present invention specifically adopts the following technical solutions: a novel butterfly check combined valve, comprising a second valve body, one end of the second valve body is connected with a second sealing ring, the second sealing ring One end away from the second valve body is connected with the first valve body, the end of the second valve body close to the first valve body is threadedly connected with the first stud, and the inner side of the second valve body is away from the first valve body A second butterfly valve flap is fixedly connected, a first nut is threadedly connected to the side of the first stud away from the second valve body, and a second valve body is fixedly connected to the side of the first valve body close to the second valve body. A valve seat, one end of the first valve body close to the second valve seat is fixedly connected with a first valve seat, one side of the first valve body close to the first valve seat is fixedly connected with a first spring, the first valve The inner side of the body close to the first valve seat is rotatably connected with a valve ball, the side of the first valve body close to the second valve seat is fixedly connected with a first sealing ring, and the top of the valve ball is fixedly connected with a valve stem , the top surface of the valve stem is fixedly connected with a packing pressure sleeve, the end of the packing pressure sleeve away from the plane bearing is fixedly connected with a packing pressure plate, the two ends of the packing pressure plate are threadedly connected with a second stud, the second A second nut is fixedly connected to the end of the stud away from the first valve body, and a butterfly spring is connected to the end of the second nut close to the first valve body.

Further, the bottom end of the second butterfly valve disc is connected with a cylindrical pin, the circumference of the cylindrical pin is connected with a second spring, and the end of the cylindrical pin away from the second butterfly valve disc is connected with a first butterfly valve. valve disc.

Further, the bottom end of the second butterfly valve flap is connected with the top end of the first butterfly valve flap, the top end of the second butterfly valve flap is connected with the second valve body, and the first butterfly valve flap is connected. The bottom end is connected with the second valve body.

Further, the cylindrical pin is fixedly connected with the inner wall of the second valve body, and the second spring is fixedly connected with the inside of the second valve body.

Further, the end of the valve stem away from the valve ball is fixedly connected with a plane bearing, the end of the plane bearing away from the valve stem is connected with a sliding bearing, the two sides of the valve stem close to the sliding bearing are connected with a first packing, the The top of the first packing is connected with the second packing.

Further, a stuffing box is fixedly connected to one end of the first valve body close to the stuffing pressure plate, the inside of the stuffing box is provided with screws, and the end of the stuffing box close to the sliding bearing is fixedly connected with a third sealing ring.

Further, there are two first fillers, and the two first fillers are symmetrically distributed at both ends of the second filler.

(3) Beneficial effects

The beneficial effects of the present invention are as follows:

1. In the present invention, the assembly and disassembly of the device can be made more convenient through the cooperation between the first stud and the first nut and the cooperation between the second stud and the second nut installed inside the device.

2. In the present invention, through the cooperation of the first butterfly valve disc and the second butterfly valve disc installed inside the device, the working process of the device can be made more sensitive and the working efficiency of the device can be improved.

3. In the present invention, through the cooperation between the stuffing box, the first packing and the second packing installed inside the device, the sealing performance of the device can be better, and the blocking effect of the valve can be prevented from being reduced due to air leakage during the working process of the device. .

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the overall structure of the present invention;

Fig. 2 is the side sectional schematic diagram of the overall structure of the present invention;

Fig. 3 is the enlarged schematic diagram of the structure at B in Fig. 2 of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 2 of the present invention.

Reference numerals: 1. The first valve body; 2. The first spring; 3. The first valve seat; 4. The valve ball; 5. The second valve seat; 6. The first sealing ring; 7. The second sealing ring; 8, the second valve body; 9, the first stud; 10, the first nut; 11, the second spring; 12, the cylindrical pin; 13, the first butterfly valve disc; 14, the second butterfly valve disc; 15 , valve stem; 16, plane bearing; 17, sliding bearing; 18, third sealing ring; 19, screw; 20, stuffing box; 21, first packing; 22, second packing; 23, packing press sleeve; 24, Packing pressure plate; 25, butterfly spring; 26, second stud; 27, second nut.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

Please refer to Figures 1 and 2, a new type of butterfly check combined valve includes a second valve body 8, one end of the second valve body 8 is connected with a second sealing ring 7, and the second sealing ring 7 is far away from the second valve body One end of the second valve body 8 is connected with the first valve body 1 , one end of the second valve body 8 close to the first valve body 1 is threadedly connected with the first stud 9 , and the inner side of the second valve body 8 away from the first valve body 1 is fixedly connected There is a second butterfly valve flap 14, the side of the first stud 9 away from the second valve body 8 is threadedly connected with a first nut 10, and the side of the first valve body 1 close to the second valve body 8 is fixedly connected with a second valve body 8. The valve seat 5, one end of the first valve body 1 close to the second valve seat 5 is fixedly connected with the first valve seat 3, the side of the first valve body 1 close to the first valve seat 3 is fixedly connected with the first spring 2, the first valve seat The inside of the valve body 1 close to the first valve seat 3 is rotatably connected with the valve ball 4 , the side of the first valve body 1 close to the second valve seat 5 is fixedly connected with the first sealing ring 6 , and the top of the valve ball 4 is fixed The valve stem 15 is connected, the top surface of the valve stem 15 is fixedly connected with a packing pressure sleeve 23, and one end of the packing pressure sleeve 23 away from the plane bearing 16 is fixedly connected with a packing pressure plate 24, and the two ends of the packing pressure plate 24 are threadedly connected with a second stud 26. One end of the second stud 26 away from the first valve body 1 is fixedly connected with a second nut 27, and one end of the second nut 27 close to the first valve body 1 is connected with a butterfly spring 25.

In this embodiment, through the cooperation between the first stud 9 and the first nut 10 installed inside the device, and the cooperation between the second stud 26 and the second nut 27, the assembly and disassembly of the device can be more convenient , during assembly, the first valve body 1 and the second valve body 8 of the device can be fixed by the first stud 9 and the first nut 10, and the valve inside the device can be fixed by the second stud 26 and the second nut 27. The rod 15 is conveniently assembled inside the valve, which improves the molding efficiency of the device.

Example 2

Please refer to FIGS. 2 and 4. This embodiment is further optimized on the basis of Embodiment 1. Specifically, the bottom end of the second butterfly valve disc 14 is connected with a cylindrical pin 12, and the circumference of the cylindrical pin 12 is connected There is a second spring 11 , and one end of the cylindrical pin 12 away from the second butterfly valve disc 14 is connected with the first butterfly valve disc 13 .

Specifically, the bottom end of the second butterfly valve flap 14 is connected with the top end of the first butterfly valve flap 13 , the top end of the second butterfly valve flap 14 is connected with the second valve body 8 , and the first butterfly valve flap 13 The bottom end is connected to the second valve body 8 .

Specifically, the cylindrical pin 12 is fixedly connected to the inner wall of the second valve body 8 , and the second spring 11 is fixedly connected to the inside of the second valve body 8 .

In this embodiment, through the cooperation of the first butterfly valve disc 13 and the second butterfly valve disc 14 installed inside the device, the working process of the device can be made more sensitive, and the working efficiency of the device can be improved. The installed first butterfly valve disc 13 and second butterfly valve disc 14 work by the initial sealing force provided by the second spring 11, the first valve seat 3 and the second valve seat 5, and at the same time due to the first butterfly valve The difference in shape between the flap 13 and the second butterfly valve flap 14 and the standard valve flap can make the working process of the device more convenient and sensitive.

Example 3

Please refer to FIGS. 2 and 3. This embodiment is optimized as follows on the basis of Example 1 or Example 2. Specifically, the end of the valve stem 15 away from the valve ball 4 is fixedly connected with a plane bearing 16, and the plane bearing 16 is away from the valve stem. A sliding bearing 17 is connected to one end of the 15 , a first packing 21 is connected to both sides of the valve stem 15 close to the sliding bearing 17 , and a second packing 22 is connected to the top of the first packing 21 .

Specifically, a stuffing box 20 is fixedly connected to one end of the first valve body 1 close to the packing pressure plate 24 , a screw 19 is provided inside the stuffing box 20 , and a third sealing ring 18 is fixedly connected to one end of the stuffing box 20 close to the sliding bearing 17 .

Specifically, there are two first fillers 21 , and the two first fillers 21 are symmetrically distributed at both ends of the second filler 22 .

In this embodiment, through the cooperation between the stuffing box 20, the first packing 21, and the second packing 22 installed inside the device, the sealing performance of the device can be improved, and the valve can be prevented from leaking due to air leakage during the working process of the device. When the valve is installed, the first packing 21 and the second packing 22 in the stuffing box 20 can be filled to the side of the valve stem 15 through the gap between the valve stem 15 and the stuffing box 20, and then the packing pressure plate 24 The filler is compacted inside the device to improve the sealing effect of the device.

To sum up, in the present invention, through the cooperation between the first stud 9 and the first nut 10 installed inside the device, and the cooperation between the second stud 26 and the second nut 27, the device can be assembled and disassembled It is more convenient. During assembly, the first valve body 1 and the second valve body 8 of the device can be fixed by the first stud 9 and the first nut 10, and the device can be fixed by the second stud 26 and the second nut 27. The inner valve stem 15 is easily assembled into the valve, which improves the molding efficiency of the device. The cooperation of the first butterfly valve disc 13 and the second butterfly valve disc 14 installed inside the device can make the working process of the device more sensitive and improve the working efficiency of the device. The stuffing box 20 installed inside the device, the first packing 21. The cooperation between the second packing 22 can make the sealing performance of the device better, and prevent the blocking effect of the valve from decreasing due to air leakage during the working process of the device.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. The scope of patent protection of the present invention is subject to the claims. Any equivalent structural changes made by using the contents of the description and drawings of the present invention are the same. All should be included in the protection scope of the present invention.

Claims (7)

1. A novel butterfly check combined valve, comprising a second valve body (8), characterized in that: one end of the second valve body (8) is connected with a second sealing ring (7), and the second valve body (8) is connected with a second sealing ring (7). One end of the second sealing ring (7) away from the second valve body (8) is connected with the first valve body (1), and the end of the second valve body (8) close to the first valve body (1) is threadedly connected with the first valve body (1). A stud (9), a second butterfly valve flap (14) is fixedly connected to the inner side of the second valve body (8) away from the first valve body (1), and the first stud (9) is far away from A first nut (10) is threadedly connected to one side of the second valve body (8), and a second valve seat (5) is fixedly connected to the side of the first valve body (1) close to the second valve body (8). , the end of the first valve body (1) close to the second valve seat (5) is fixedly connected with the first valve seat (3), and the first valve body (1) is close to one end of the first valve seat (3) A first spring (2) is fixedly connected to the side, a valve ball (4) is rotatably connected to the inner side of the first valve body (1) close to the first valve seat (3), and the first valve body (1) ) A first sealing ring (6) is fixedly connected to the side close to the second valve seat (5), the top end of the valve ball (4) is fixedly connected to a valve stem (15), and the top end of the valve stem (15) is fixedly connected A packing press sleeve (23) is fixedly connected to the surface, and a packing press plate (24) is fixedly connected to one end of the packing press sleeve (23) away from the plane bearing (16), and both ends of the packing press plate (24) are threadedly connected with a first Two studs (26), the end of the second stud (26) away from the first valve body (1) is fixedly connected with a second nut (27), and the second nut (27) is close to the first valve body (1). One end of 1) is connected with a butterfly spring (25). 2. A novel butterfly check combined valve according to claim 1, characterized in that: the bottom end of the second butterfly valve disc (14) is connected with a cylindrical pin (12), the cylindrical pin A second spring (11) is connected to the circumference of (12), and a first butterfly valve disc (13) is connected to one end of the cylindrical pin (12) away from the second butterfly valve disc (14). 3. A novel butterfly check combined valve according to claim 2, characterized in that: the bottom end of the second butterfly valve disc (14) and the top end of the first butterfly valve disc (13) The top end of the second butterfly valve disc (14) is connected with the second valve body (8), and the bottom end of the first butterfly valve disc (13) is connected with the second valve body (8). 4. A novel butterfly check combined valve according to claim 2, characterized in that: the cylindrical pin (12) is connected with the inner wall of the second valve body (8), and the second spring (11) is connected to the inner wall of the second valve body (8). ) is fixedly connected to the inside of the second valve body (8). 5. A novel butterfly check combined valve according to claim 1, characterized in that: one end of the valve stem (15) away from the valve ball (4) is fixedly connected with a plane bearing (16), the A sliding bearing (17) is connected to one end of the plane bearing (16) away from the valve stem (15), and a first packing (21) is connected to both sides of the valve stem (15) close to the sliding bearing (17). The top of the packing (21) is connected with a second packing (22). 6. A novel butterfly check combined valve according to claim 1, characterized in that: one end of the first valve body (1) close to the packing pressure plate (24) is fixedly connected with a packing box (20), A screw (19) is provided inside the stuffing box (20), and a third sealing ring (18) is fixedly connected to one end of the stuffing box (20) close to the sliding bearing (17). 7. A novel butterfly check combined valve according to claim 1, characterized in that: there are two first packings (21), and two of the first packings (21) are in the second packing (22) Symmetrical distribution at both ends.

Images