Rotary conduit control valve

Abstract

The present application relates to the technical field of pipeline valve, especially to a rotary pipeline control valve, comprising a front protective cover, a rear protective cover, a rotary valve, a main control gear, a motor, a motor gear, a main control gear sealing ring and a rotary valve handle. The valve is opened and closed by the front protective cover, the rear protective cover, the rotary valve and the non-contact rotation, the rear protective cover can be connected with various connecting pipes and different pipe diameter equipment, and the water inlet height of the equipment can be changed at will. The present application has simple structure, and the components can be made of plastic, stainless steel, aluminum profile and other materials. Compared with the existing gate valve, butterfly valve and ball valve, the cost is lower. The present application has full diameter straight through, low flow resistance, uniform speed rotation, and controllable water hammer risk.

Description

Technical Field

[0001] This invention relates to the field of pipeline valve technology, and in particular to a rotary pipeline control valve. Background Technology

[0002] With the development of the social economy, the scale of intensive agricultural production has increased year by year, and the improvement of agricultural mechanization has greatly improved the efficiency of crop production. Among them, farmland irrigation usually adopts intelligent irrigation equipment, mainly including intelligent gate valves, ball valves, and solenoid valves. The above equipment can now realize intelligent operation of farmland irrigation, but the following problems still exist in the process of upgrading and transforming farmland irrigation equipment: (1) the equipment cost is relatively high; (2) the installation location and method of the equipment have certain requirements on environmental conditions, and the existing valves are prone to failure in the farmland environment. The applicability of the above-mentioned pipeline valves in farmland irrigation has certain limitations.

[0003] Therefore, it is necessary to propose a pipeline control valve that is simple in structure, low in cost, and suitable for farmland irrigation. Summary of the Invention

[0004] To address the above problems, this invention proposes a rotary pipeline control valve, the technical solution of which is as follows: A rotary pipeline control valve includes a front protective cover, a rear protective cover, a rotary valve, a main control gear, a motor, a motor gear, a main control gear sealing ring, and a rotary valve handle; The front protective cover has a first cylindrical portion and a square flange portion located at the rear end of the first cylindrical portion, and a protective cover opening is provided on the side wall of the first cylindrical portion. The rear protective cover has a second cylindrical portion and a rear end cover located at the rear end of the second cylindrical portion, and the front end of the second cylindrical portion is sealed to the square flange portion. The rotary valve is cylindrical and coaxially disposed within the cavity formed by the front protective cover and the rear protective cover. A rotary valve opening is provided on the side wall of the rotary valve. The outer circumferential surface of the rotary valve is in clearance fit with the inner circumferential surfaces of the first cylindrical part and the second cylindrical part. The main control gear is an annular external gear, which is fixedly sleeved on the outer circumferential surface of the rotary valve; The motor is fixed to the inside of the rear end cover; the motor gear is fixed to the output shaft of the motor and meshes with the main control gear. The main control gear sealing rings are respectively disposed between the two end faces of the main control gear and the corresponding end faces of the front protective cover and the rear protective cover; The rotary valve handle is rod-shaped, with one end fixedly connected to the front end face of the rotary valve, and the other end extending through the corresponding through hole of the front protective cover.

[0005] Optionally, the front end of the first cylindrical portion is provided with a circular opening, and the opening of the protective cover is a rectangular opening; the opening of the rotary valve is a rectangular opening that matches the shape of the opening of the protective cover.

[0006] Optionally, the gap between the outer circumferential surface of the rotary valve and the inner circumferential surface of the first cylindrical portion and the second cylindrical portion is 0.15-0.2 mm.

[0007] Optionally, annular grooves are respectively provided on both end faces of the main control gear, and the main control gear sealing ring is embedded in the annular grooves, and the main control gear sealing ring is pre-pressed into contact with the corresponding end faces of the front protective cover and the rear protective cover.

[0008] Optionally, the rotary valve handle is a cylindrical rod with a handle portion at one end extending out of the front protective cover; a sealing ring is provided in the through hole on the front protective cover.

[0009] Optionally, the motor gear is a small-diameter gear, and the main control gear is a large-diameter gear, together forming a speed reduction transmission.

[0010] Optionally, the motor housing is provided with an annular glue-filling groove, which is filled with sealant; a rubber plug is provided at the motor lead wire, and the outside of the rubber plug is coated with sealant.

[0011] Optionally, the outer circumferential surface of the second cylindrical portion is provided with a connecting surface for connecting a pipe.

[0012] Optionally, the rotary pipeline control valve further includes a stroke encoder, which is connected to the main control gear or the rotary valve to detect the rotation angle.

[0013] Optionally, the main control gear sealing ring is an annular sealing ring.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects: (1) This invention proposes a rotary pipeline control valve. The equipment connecting pipe can be connected to equipment with different pipe diameters through various external connecting pipes. At the same time, the height of the equipment inlet can be changed at will. The core control components of the equipment are simple in structure. The components can be made of materials such as plastic, stainless steel, and aluminum profiles. Compared with existing gate valves, butterfly valves, and ball valves, the cost is lower.

[0015] (2) The present invention proposes a rotary pipeline control valve, which realizes valve opening and closing through a seamlessly fitted perforated pipe and non-contact rotation. Compared with existing gate valves, butterfly valves and ball valves, the present invention has a full-bore straight-through, extremely low flow resistance, and uniform rotation speed for opening and closing, making water hammer risk controllable.

[0016] (3) The present invention also includes sealing rings respectively disposed between the two end faces of the main control gear and the corresponding end faces of the front protective cover and the rear protective cover, so as to realize the sealing and isolation of the gear compartment and simplify maintenance.

[0017] (4) Unlike existing gate valves, butterfly valves or ball valves, the rotary pipeline control valve provided by this invention has low requirements for materials and can be made of plastic, stainless steel or aluminum profiles, which is cheaper and suitable for large-scale promotion of farmland irrigation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a rotary pipeline control valve. Figure 2 for Figure 1 Exploded view; Among them, 1-motor, 2-motor gear, 3-main control gear, 4-rotary valve, 5-front protective cover, 6-rear protective cover, 7-main control gear sealing ring, 8-rotary valve handle. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and 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 effort are within the scope of protection of the present invention.

[0021] Example 1: like Figure 1 and Figure 2 As shown, this embodiment provides a rotary pipeline control valve, including a front protective cover 5, a rear protective cover 6, a rotary valve 4, a main control gear 3, a motor 1, a motor gear 2, a main control gear sealing ring 7, and a rotary valve handle 8; The front protective cover 5 has a first cylindrical part and a square flange part located at the rear end of the first cylindrical part, and a protective cover opening is provided on the side wall of the first cylindrical part. The rear protective cover 6 has a second cylindrical portion and a rear cover located at the rear end of the second cylindrical portion, and the front end of the second cylindrical portion is sealed to the square flange portion. The rotary valve 4 is cylindrical and coaxially disposed within the cavity formed by the front protective cover 5 and the rear protective cover 6. A rotary valve opening is provided on the side wall of the rotary valve 4. The outer circumferential surface of the rotary valve 4 is in clearance fit with the inner circumferential surface of the first cylindrical part and the second cylindrical part. The main control gear 3 is an annular external gear, which is fixedly sleeved on the outer circumferential surface of the rotary valve 4; The motor 1 is fixed to the inside of the rear end cover; the motor gear 2 is fixed to the output shaft of the motor 1 and meshes with the main control gear 3. The main control gear sealing rings 7 are respectively disposed between the two end faces of the main control gear 3 and the corresponding end faces of the front protective cover 5 and the rear protective cover 6. The rotary valve handle 8 is rod-shaped, with one end fixedly connected to the front end face of the rotary valve 4, and the other end extending through the corresponding through hole of the front protective cover 5.

[0022] It should be noted that the front protective cover 5, rear protective cover 6, rotary valve 4 and main control gear 3 in this embodiment are made of plastic, stainless steel or aluminum profiles. Compared with existing butterfly valves, ball valves or gate valves, the rotary pipeline control valve provided in this embodiment can be made of lower cost materials, which is suitable for large-scale promotion of farmland irrigation.

[0023] Furthermore, the main control gear sealing ring 7 is an annular sealing ring.

[0024] In this embodiment, the front end of the first cylindrical part is provided with a circular opening, the opening of the protective cover is a rectangular opening, and the opening of the rotary valve is a rectangular opening that matches the shape of the opening of the protective cover.

[0025] Preferably, in this embodiment, the gap between the outer circumferential surface of the rotary valve 4 and the inner circumferential surface of the first cylindrical part and the second cylindrical part is 0.2mm. The rotary pipeline control valve provided in this embodiment adopts a non-contact rotary seal. The rotary valve and the arc surface of the front / rear protective cover are coaxial, with a gap of only 0.2mm. There is no relative friction between the sealing surfaces during normal opening and closing. The sealing force comes from the thrust of the water pressure in the pipeline on the rotary valve, which presses the rotary valve and the protective cover tightly. This water pressure self-tightening principle makes the sealing force increase with the increase of water pressure, and the sealing reliability does not decrease with time.

[0026] In this embodiment, annular grooves are respectively provided on both end faces of the main control gear 3, and the main control gear sealing ring 7 is embedded in the annular grooves. The main control gear sealing ring 7 is in pre-pressed contact with the corresponding end faces of the front protective cover 5 and the rear protective cover 6.

[0027] In this embodiment, the rotary valve handle 8 is a cylindrical rod with a handle portion at one end extending from the front protective cover 5; a sealing ring is provided in the through hole on the front protective cover 5. It should be noted that the rotary valve 4 has a rotary valve handle 8 extending from the front protective cover 5. When the motor 1 malfunctions or loses power, the rotary valve handle 8 can be manually rotated to open and close the valve, ensuring uninterrupted irrigation of farmland. The design of the handle extending from the end cover allows it to be operated even when the equipment is installed underwater.

[0028] In this embodiment, the motor gear 2 is a small-diameter gear, and the main control gear 3 is a large-diameter gear, together forming a speed reduction transmission.

[0029] In this embodiment, the outer casing of the motor 1 is provided with an annular glue-filling groove, which is filled with sealant; a rubber plug is provided at the lead wire of the motor 1, and the outer side of the rubber plug is coated with sealant.

[0030] In this embodiment, the outer circumferential surface of the second cylindrical portion is provided with a connecting surface for connecting a pipe.

[0031] In addition, this embodiment also includes a stroke encoder, which is connected to the main control gear 3 or the rotary valve 4 to detect the rotation angle. In this embodiment, the motor drives the rotary valve to rotate after gear reduction, and the opening and closing speed is uniform and controllable. By controlling the motor speed or using a stroke encoder to monitor the angle in real time, a slow-closing function can be achieved, effectively suppressing water hammer.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. All equivalent transformations made based on the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the protection scope of the present invention.

Claims

1. A rotary pipeline control valve, characterized in that, It includes a front protective cover (5), a rear protective cover (6), a rotary valve (4), a main control gear (3), a motor (1), a motor gear (2), a main control gear sealing ring (7), and a rotary valve handle (8); The front protective cover (5) has a first cylindrical part and a square flange part located at the rear end of the first cylindrical part, and a protective cover opening is provided on the side wall of the first cylindrical part. The rear protective cover (6) has a second cylindrical portion and a rear end cover located at the rear end of the second cylindrical portion, and the front end of the second cylindrical portion is sealed to the square flange portion. The rotary valve (4) is cylindrical and is coaxially disposed in the cavity formed by the front protective cover (5) and the rear protective cover (6). A rotary valve opening is provided on the side wall of the rotary valve (4). The outer circumferential surface of the rotary valve (4) is clearance-fitted with the inner circumferential surface of the first cylindrical part and the second cylindrical part. The main control gear (3) is an annular external gear, which is fixedly sleeved on the outer circumferential surface of the rotary valve (4); The motor (1) is fixed to the inside of the rear end cover; the motor gear (2) is fixed to the output shaft of the motor (1) and meshes with the main control gear (3); The main control gear sealing ring (7) is respectively disposed between the two end faces of the main control gear (3) and the corresponding end faces of the front protective cover (5) and the rear protective cover (6); The rotary valve handle (8) is rod-shaped, with one end fixedly connected to the front end face of the rotary valve (4), and the other end extending through the corresponding through hole of the front protective cover (5).

2. The rotary pipeline control valve according to claim 1, characterized in that, The front end of the first cylindrical part is provided with a circular opening, and the opening of the protective cover is a rectangular opening; the opening of the rotary valve is a rectangular opening that matches the shape of the opening of the protective cover.

3. The rotary pipeline control valve according to claim 1, characterized in that, The gap between the outer circumferential surface of the rotary valve (4) and the inner circumferential surface of the first cylindrical part and the second cylindrical part is 0.15-0.2mm.

4. The rotary pipeline control valve according to claim 1, characterized in that, The main control gear (3) has annular grooves on both sides of its end face. The main control gear sealing ring (7) is embedded in the annular grooves and is in pre-pressed contact with the corresponding end faces of the front protective cover (5) and the rear protective cover (6).

5. The rotary pipeline control valve according to claim 1, characterized in that, The rotary valve handle (8) is a cylindrical rod with a handle portion at one end extending out of the front protective cover (5); a sealing ring is provided in the through hole on the front protective cover (5).

6. The rotary pipeline control valve according to claim 1, characterized in that, The motor gear (2) is a small-diameter gear, and the main control gear (3) is a large-diameter gear. The two together form a speed reduction transmission.

7. The rotary pipeline control valve according to claim 1, characterized in that, The motor (1) has an annular glue-filling groove on its outer casing, and the annular glue-filling groove is filled with sealant; the motor (1) has a rubber plug at its lead wire, and the outside of the rubber plug is coated with sealant.

8. The rotary pipeline control valve according to claim 1, characterized in that, The outer circumferential surface of the second cylindrical part is provided with a connecting surface for connecting pipes.

9. The rotary pipeline control valve according to claim 1, characterized in that, It also includes a stroke encoder, which is connected to the main control gear (3) or the rotary valve (4) for detecting the rotation angle.

10. The rotary pipeline control valve according to claim 1, characterized in that, The main control gear sealing ring (7) is an annular sealing ring.

Images