Eccentric rotating closed air valve

Abstract

The utility model discloses an eccentric rotating closed air valve, which relates to the field of environment-friendly ventilating duct engineering, and comprises an air valve barrel, a sealing ring and a sealing ring, the axis of the valve rod is perpendicular to the axis of the air valve barrel in different planes; and one end face of the valve plate can be rotationally closed with the sealing ring. A driving assembly is arranged at the upper end of the valve rod and comprises a transmission set and a handle rotationally arranged at one end of the transmission set. The valve plate and the valve rod are eccentrically arranged, the layout mode that a valve rod of a traditional closed air valve is arranged in the center is replaced, and the eccentric layout is high in response speed when the valve plate is closed. And the inclined surface is arranged at the edge of the periphery of the valve plate ring, so that the valve plate can be in hard sealing with the inclined surface of the sealing ring after rotating, the required sealing effect can be achieved by adopting the sealing mode without soft sealing materials such as a rubber ring, and the tighter the valve rotates, the tighter the contact of the sealing surface is, and the better the sealing effect is. The problem that the air leakage rate of a traditional air valve is too high all the time is solved.

Description

Technical Field

[0001] The utility model belongs to the field of environmental protection ventilation duct engineering, in particular to an eccentric rotating closed air valve. Background Art

[0002] The closed valve is a valve used to isolate the ventilation system inside the protective project from the outside world. According to the power, it can be divided into two categories: manual and manual and electric. The former is composed of a shell, a valve plate and a manual drive device, while the latter is composed of a shell, a valve plate, a manual device, a reduction gear box and an electric device. It is installed on the air duct outside the air inlet and exhaust fans. If necessary, the valve can be closed to cut off the air path.

[0003] Manual air valve devices in the prior art mostly use a central valve stem to rotate. The air valve with a central rotation method has a disconnected sealing surface at its sealing position, which results in poor sealing effect and high air leakage rate during the sealing operation. Therefore, in order to solve the problem of poor sealing effect of traditional dynamic airtight air valves, it is urgent to design a sealed air valve that is easy to use and has good sealing effect. Utility Model Content

[0004] The purpose of the utility model is to provide an eccentric rotating airtight air valve to solve the problems of poor sealing effect and high air leakage rate mentioned in the above background technology. The following technical solution is provided: an eccentric rotating airtight air valve, comprising:

[0005] Air valve cylinder;

[0006] The sealing ring is fixedly arranged on the inner ring end wall of the air valve cylinder, and the inner ring end of the sealing ring is inclined;

[0007] The valve stem is rotatably arranged inside the air valve cylinder, one end of the valve stem protrudes outward and the axis of the valve stem is perpendicular to the axis of the air valve cylinder;

[0008] The valve plate is fixedly arranged on one side of the valve stem, and one end surface of the valve plate can be rotatably closed with the sealing ring.

[0009] The upper end of the valve stem is provided with a driving assembly, which comprises a transmission group and a handle rotatably arranged at one end of the transmission group.

[0010] In the present technical solution, the valve stem is eccentrically arranged, and the valve plate is sealed with the sealing ring by rotating the eccentric valve stem. When the device is in use, the handle is first rotated manually, and the handle drives the valve stem to rotate through the transmission group. The transmission group can use a worm gear mechanism or a mechanism that can drive the valve stem to rotate. This application does not make any specific restrictions on this. The axis of the valve stem is arranged on one side of the air valve cylinder body and is perpendicular to the central axis of the air valve cylinder body (that is, the valve stem is eccentrically arranged). When the valve stem rotates, it drives the valve plate and the sealing ring to close to achieve complete sealing of the entire valve body.

[0011] In any of the above technical solutions, further, the edge of the valve plate ring end is inclined, a rotating plate is fixedly provided on one end surface of the valve plate, and a mounting groove for clamping with the valve stem is also provided on the rotating plate.

[0012] The valve plate is also provided with ribs for reinforcing the rotating plate. The valve plate and the sealing ring are made of glass fiber reinforced plastic material. After the inclined surface rotates, it is hard-sealed and closed with the inclined surface of the inner ring end of the sealing ring.

[0013] In the present technical solution, the valve plate adopts an eccentric valve stem rotation structure. When the valve plate rotates eccentrically, the inclined surface is in close contact with the sealing ring arranged inside the air valve cylinder, which plays a complete sealing role. Since the sealing ring is a complete circle, the valve plate and the sealing ring adopt an inclined contact surface hard seal, and no soft sealing materials such as rubber rings are required to achieve the required sealing effect. The tighter the valve rotates, the tighter the sealing surface contacts, and the better the sealing effect, thereby ensuring that the entire valve body has an excellent sealing effect, solving the problems of ordinary air valves with disconnected sealing surfaces, poor sealing effects, and high air leakage rates. The valve plate is produced by mechanical molding, in which the ribs can ensure the stability of the structure between the rotating plates. In addition, the valve plate and valve body in the present application can be produced by fiberglass materials, and can also be produced by plastics and other materials under special circumstances.

[0014] And because the valve stem is eccentrically set, when the valve plate rotates around its axis, the two end points c and d of the valve plate rotate around point o respectively, and the two end points of the sealing ring are a and b respectively, and the distance between oc is equal to the distance between ob, and the distance between od and oa is also equal, so it can be ensured that the valve plate can be completely closed with the sealing ring after rotating 90° around point o. When closed, the inclined surface and the inclined surface of the sealing ring are hard-sealed. The position of the center o of the valve stem rotation can be designed according to valves of different specifications and diameters to ensure that the valve plate rotates without interference.

[0015] In any of the above technical solutions, further, the air valve cylinder includes a first air cylinder and a second air cylinder, and the first air cylinder and the second air cylinder are respectively semi-cylindrical, and the joints of the first air cylinder and the second air cylinder are respectively provided with sealing grooves for sealing connection and mounting holes for installation, and the lower end of the second air cylinder is also provided with a positioning ring for installing the valve stem.

[0016] In the technical scheme, the air valve cylinder is divided into a first air cylinder and a second air cylinder. The first air cylinder, the second air cylinder and the valve plate are all produced by mechanical molding, which has high production efficiency and controllable product quality. In addition, sealing grooves are provided on the sides of the first air cylinder and the second air cylinder. After the two are butt-jointed and installed, the butt-joint sealing of the first air cylinder and the second air cylinder is ensured. The installation holes are provided to ensure the bolt assembly of the first air cylinder and the second air cylinder, so that the assembly efficiency of the whole equipment is improved and the appearance is more beautiful. One end of the valve stem is rotatably arranged in the positioning ring to ensure its stability during rotation.

[0017] The beneficial effects of the utility model are as follows: the valve plate and the valve stem are eccentrically arranged, replacing the traditional closed air valve valve stem central arrangement layout. The eccentric layout has a fast response speed when the valve plate is closed. An inclined surface is arranged at the peripheral edge of the valve plate ring, so that the valve plate can be hard-sealed with the inclined surface of the sealing ring after rotation. This sealing method does not require soft sealing materials such as rubber rings to achieve the desired sealing effect, and the tighter the valve rotates, the tighter the sealing surface contacts, and the better the sealing effect. The problem of high air leakage rate of ordinary air valves has been solved. The valve plate and valve body are both produced by mechanical standardization, with high efficiency, stable quality and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0019] Figure 2 It is an exploded view of the utility model;

[0020] Figure 3 It is a three-dimensional schematic diagram of the valve plate and the second air duct in the utility model;

[0021] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the utility model when it is opened;

[0023] Figure 6 It is a schematic diagram of the utility model when it is closed.

[0024] The reference numerals in the figure are: 10, air valve cylinder; 11, first air cylinder; 12, second air cylinder; 13, sealing groove; 14, mounting hole; 15, positioning ring; 20, sealing ring; 30, valve plate; 31, inclined surface; 32, rotating plate; 33, rib; 34, mounting groove; 40, valve stem; 50, drive assembly; 51, transmission group; 52, handle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0026] Embodiment 1:

[0027] like Figure 1-3 As shown, this embodiment provides an eccentric rotating closed air valve, comprising:

[0028] Air valve cylinder 10;

[0029] The sealing ring 20 is fixedly arranged at the inner ring end wall of the air valve cylinder 10, and the inner ring end of the sealing ring 20 is inclined;

[0030] The valve stem 40 is rotatably disposed inside the air valve cylinder 10, one end of the valve stem 40 protrudes outward and the axis of the valve stem 40 is skewed and perpendicular to the axis of the air valve cylinder 10;

[0031] The valve plate 30 is fixedly arranged on one side of the valve stem 40 , and one end surface of the valve plate 30 can be rotatably closed with the sealing ring 20 .

[0032] A driving assembly 50 is disposed at the upper end of the valve stem 40 . The driving assembly 50 includes a transmission group 51 and a handle 52 rotatably disposed at one end of the transmission group 51 .

[0033] In the present technical solution, the valve stem 40 is eccentrically arranged, and the valve plate 30 realizes a closed seal with the sealing ring 20 by rotating the eccentric valve stem. When the device is in use, the handle 52 is first rotated manually, and the handle 52 drives the valve stem 40 to rotate through the transmission group 51. The transmission group 51 can be a worm gear mechanism or a mechanism that can drive the valve stem 40 to rotate, and the present application does not make any specific limitation on this.

[0034] The axis of the valve stem 40 is arranged on one side of the air valve cylinder 10 and is eccentrically perpendicular to the central axis of the air valve cylinder 10 (i.e., the valve stem 40 is eccentrically arranged). When the valve stem 40 rotates, it drives the valve plate 30 and the sealing ring 20 to close to achieve complete sealing of the entire valve body.

[0035] In a preferred embodiment of the present invention:

[0036] like Figure 4-6 As shown, specifically, the edge of the ring end of the valve plate 30 is an inclined surface 31 , a rotating plate 32 is fixedly provided at one end surface of the valve plate 30 , and a mounting groove 34 for clamping with the valve stem 40 is also opened on the rotating plate 32 .

[0037] The valve plate 30 is also provided with ribs 33 for reinforcing the rotating plate 32 . The valve plate 30 and the sealing ring 20 are made of glass fiber reinforced plastic material. After the inclined surface 31 rotates, it is hard-sealed with the inclined surface of the inner ring end of the sealing ring 20 .

[0038] In the present technical solution, the valve plate 30 adopts an eccentric valve stem rotation structure. When the valve plate 30 rotates eccentrically, the inclined surface 31 is in close contact with the sealing ring 20 provided inside the air valve cylinder 10, and plays a complete sealing role. Since the sealing ring 20 is a complete circle, the valve plate 30 and the valve plate 30 are hard-sealed with an inclined contact surface, and no soft sealing materials such as rubber rings are required to achieve the desired sealing effect. The tighter the valve rotates, the tighter the sealing surface contacts, and the better the sealing effect, thereby ensuring that the entire valve body has an excellent sealing effect, solving the problems of ordinary air valves with disconnected sealing surfaces, poor sealing effects, and high air leakage rates. The valve plate 30 is produced by mechanical molding, in which the ribs 33 can ensure the stability of the structure between the rotating plates 32. In addition, the valve plate 30 and the valve body in the present application can be produced by glass fiber reinforced plastics, and can also be produced by plastics and other materials under special circumstances.

[0039] And because the valve stem 40 is eccentrically arranged, when the valve plate 30 rotates around its axis, the two end points c and d of the valve plate 30 rotate around the point o respectively, and the two end points of the sealing ring 20 are a and b respectively, and the distance between oc is equal to the distance between ob, and the distance between od and oa is also equal, so it can be ensured that the valve plate 30 can be completely closed with the sealing ring 20 after rotating 90° around the point o. When closed, the inclined surface 31 and the inclined surface of the sealing ring 20 are hard-sealed and closed. The position of the center o of the rotation of the valve stem 40 can be designed according to valves of different specifications and diameters, so as to ensure that the valve plate rotates without interference.

[0040] In a preferred embodiment of the present invention:

[0041] like Figure 3 As shown, specifically, the air valve cylinder 10 includes a first air cylinder 11 and a second air cylinder 12, and the first air cylinder 11 and the second air cylinder 12 are respectively semi-cylindrical, and the joints of the first air cylinder 11 and the second air cylinder 12 are respectively provided with a sealing groove 13 for sealing connection and a mounting hole 14 for installation, and the lower end of the second air cylinder 12 is also provided with a positioning ring 15 for installing the valve stem 40.

[0042] In the present technical solution, the air valve cylinder 10 is divided into a first air cylinder 11 and a second air cylinder 12. The first air cylinder 11, the second air cylinder 12 and the valve plate 30 are all produced by mechanical molding, which has high production efficiency and controllable product quality. In addition, a sealing groove 13 is provided at the side of the first air cylinder 11 and the second air cylinder 12. After the two are butt-jointed and installed, the butt-joint sealing of the first air cylinder 11 and the second air cylinder 12 is ensured, and the bolt assembly of the first air cylinder 11 and the second air cylinder 12 is ensured through the provided mounting hole 14, so that the loading and unloading efficiency of the whole equipment is improved and the appearance is more beautiful. One end of the valve stem 40 is rotatably arranged in the positioning ring 15 to ensure its stability during rotation.

[0043] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An eccentrically rotating closed air valve, characterized in that: include: Air valve cylinder (10); A sealing ring (20) is fixedly arranged on the inner ring end wall of the air valve cylinder (10), and the inner ring end of the sealing ring (20) is inclined; A valve stem (40) is rotatably disposed inside the air valve cylinder (10), one end of the valve stem (40) protrudes outward and the axis of the valve stem (40) is skewed and perpendicular to the axis of the air valve cylinder (10); The valve plate (30) is fixedly arranged on one side of the valve stem (40), and one end surface of the valve plate (30) can be rotatably closed with the sealing ring (20).

2. An eccentrically rotating closed air valve according to claim 1, characterized in that: A driving assembly (50) is provided at the upper end of the valve stem (40), and the driving assembly (50) comprises a transmission group (51) and a handle (52) rotatably arranged at one end of the transmission group (51).

3. The eccentric rotating closed air valve according to claim 1, characterized in that: The edge of the ring end of the valve plate (30) is in the form of an inclined surface (31), a rotating plate (32) is fixedly arranged at one end surface of the valve plate (30), and a mounting groove (34) for clamping with the valve stem (40) is also provided on the rotating plate (32).

4. The eccentric rotating closed air valve according to claim 3, characterized in that: The valve plate (30) is also provided with ribs (33) for reinforcing the rotating plate (32).

5. The eccentric rotating closed air valve according to claim 3, characterized in that: After the inclined surface (31) rotates, it is hard-sealed with the inclined surface of the inner ring end of the sealing ring (20).

6. The eccentric rotating closed air valve according to claim 1, characterized in that: The air valve cylinder (10) comprises a first air cylinder (11) and a second air cylinder (12), wherein the first air cylinder (11) and the second air cylinder (12) are respectively semi-cylindrical, and a sealing groove (13) for sealing connection and an installation hole (14) for installation are respectively provided at the joint between the first air cylinder (11) and the second air cylinder (12).

7. An eccentrically rotating closed air valve according to claim 6, characterized in that: A positioning ring (15) for mounting the valve stem (40) is also provided at the lower end of the second air cylinder (12).

8. The eccentric rotating closed air valve according to claim 1, characterized in that: The valve plate (30) and the sealing ring (20) are made of glass fiber reinforced plastic material.

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