A regulating electric valve with a diamond-shaped diameter

Abstract

The present invention discloses an adjustable electric valve with a diamond-shaped diameter, which belongs to the field of electric valves and solves the problem that ordinary ball valves cannot accurately realize linear adjustment control of air flow. The present invention includes a valve body, a valve core and a valve cover, the valve core is rotatably connected in the valve body, the valve cover covers the valve body and the valve core, the valve core is connected to an electric actuator, the valve body is provided with a diamond-shaped diameter, the valve core is provided with a diamond-shaped hole, and the cross-sectional area of ​​the diamond-shaped hole is equal to that of the diamond-shaped diameter. The present invention has a simple and compact structure, and the design of the diamond-shaped diameter can realize linear adjustment control of the air flow, with a large adjustment range and high metering accuracy. It has a very important influence on the control of the air flow in the low-oxygen aeration control system for municipal sewage treatment, and obtains a good energy-saving effect.

Description

Technical Field

[0001] The invention belongs to the field of electric valves, and in particular relates to an adjustable electric valve with a diamond-shaped diameter. Background Art

[0002] At present, the regulating valves commonly used in engineering projects have round ball valves or butterfly valves, or gate valves with square holes in the gate.

[0003] At present, ordinary regulating ball valves include valve body and valve core. There are circular holes on the valve body and valve core respectively. The air flow is controlled by the overlap of the circular holes. The butterfly valve includes a butterfly plate and a valve body. By rotating the butterfly plate, the butterfly valve and the valve body are closed, thereby adjusting the air flow. The advantages of the above two valves are simple structure, stability, and easy processing and production. The disadvantage is that the diameter of the valve body and the valve core is irregular, and the linear regulation control of the air flow cannot be accurately achieved.

[0004] Although the gate valve with a square hole can achieve linear adjustment of the diameter, the electric actuator of the gate valve needs to be a multi-turn electric actuator with an angular displacement stroke of α>360°, which is more complicated to adjust. In addition, the gate valve has a long stroke, which requires a larger installation space in the vertical direction of the valve. Summary of the invention

[0005] The purpose of the present invention is to provide a regulating electric valve with a diamond-shaped diameter to solve the problem that ordinary ball valves cannot accurately realize linear regulation and control of air flow.

[0006] The technical solution of the present invention is: a regulating electric valve with a diamond-shaped diameter, comprising a valve body, a valve core and a valve cover, the valve core is rotatably connected in the valve body, the valve cover covers the valve body and the valve core, the valve core is connected to an electric actuator, the valve body is provided with a diamond-shaped diameter, the valve core is provided with a diamond-shaped hole, and the cross-sectional area of ​​the diamond-shaped hole is equal to that of the diamond-shaped diameter.

[0007] As a further improvement of the present invention, the diamond-shaped holes and the diamond-shaped diameters are square, which has the highest ventilation efficiency.

[0008] As a further improvement of the present invention, the upper and lower edges of the valve core are respectively provided with first convex edges, and the edge of the diamond-shaped hole on the valve core is provided with a second convex edge, and the first convex edge and the second convex edge are both in contact with the inner wall of the valve body.

[0009] As a further improvement of the present invention, a rolling bearing is provided at the rotational connection between the valve core and the valve body.

[0010] As a further improvement of the present invention, a first sealing ring is provided at the connection between the valve body and the valve cover.

[0011] As a further improvement of the present invention, a second sealing ring is provided at the connection between the valve core and the valve cover.

[0012] As a further improvement of the present invention, connecting pipes communicating with the diamond-shaped path are provided at both ends of the valve body, and the apex of the diamond-shaped path is tangent to the inner diameter of the connecting pipe.

[0013] As a further improvement of the present invention, a connecting flange is provided at the end of the connecting pipe.

[0014] Driven by an electric actuator, the valve core and the valve body undergo relative rotational motion, thereby changing the overlapping area of ​​the diamond hole on the valve core and the diamond diameter on the valve body, achieving a change in the valve diameter and ultimately regulating and controlling the air flow.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The present invention has a simple and compact structure. The diamond-shaped diameter design can realize linear regulation and control of the air flow rate, with a large regulation range and high metering accuracy. It has a very important influence on the control of the air flow rate in the low-oxygen aeration control system for municipal sewage treatment, and has achieved good energy-saving effects.

[0017] 2. The relative motion between the valve core and the valve body is a relative rotational motion, which reduces the stroke of the valve core to a certain extent and saves the installation space required for equipment installation. At the same time, the cost of the angular stroke electric actuator is lower than that of the multi-turn electric actuator, which saves the cost of the overall valve equipment to a certain extent.

[0018] 3. The sealing between the valve core and the valve body is achieved by the first convex edge and the second convex edge, which reduces the relative friction area between the valve body and the valve core as much as possible. At the same time, a rolling bearing is provided at the rotating connection between the valve core and the valve body. These designs reduce the torque required to drive the valve core to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 yes Figure 1 AA view in;

[0021] Figure 3 It is a structural schematic diagram of the valve core in the present invention;

[0022] Figure 4 It is a relationship diagram between valve opening and flow rate of the present invention.

[0023] In the figure: 1-electric actuator; 2-valve cover; 3-first sealing ring; 4-valve body; 41-diamond diameter; 5-valve core; 51-diamond hole; 52-first flange; 53-second flange; 6-rolling bearing; 7-connecting pipe; 8-second sealing ring; 9-connecting flange. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-Figure 3 As shown, a regulating electric valve with a diamond-shaped diameter includes a valve body 4, a valve core 5 and a valve cover 2. The valve core 5 is rotatably connected in the valve body 4, the valve cover 2 covers the valve body 4 and the valve core 5, the valve core 5 is connected to an electric actuator 1, the valve body is provided with a diamond-shaped diameter 41, the valve core 5 is provided with a diamond-shaped hole 51, and the cross-sectional area of ​​the diamond-shaped hole 51 is equal to that of the diamond-shaped diameter 41.

[0026] The diamond-shaped hole 51 and the diamond-shaped passage 41 are in a square shape, and the ventilation efficiency is the highest.

[0027] The upper and lower edges of the valve core 5 are respectively provided with first convex edges 52, and the edge of the diamond hole 51 on the valve core 5 is provided with a second convex edge 53, and the first convex edge 52 and the second convex edge 53 are both in contact with the inner wall of the valve body 4. The sealing surface of the valve core 5 is composed of the first convex edge 52 and the second convex edge 53.

[0028] A rolling bearing 6 is provided at the rotational connection between the valve core 5 and the valve body 4. The rolling bearing 6 plays a positioning role, ensuring that the gap between the contact sealing surfaces of the valve core 5 and the valve body 4 is uniform, and at the same time ensuring that the friction between the upper and lower shaft ends of the valve core 5 is minimized.

[0029] A first O-shaped sealing ring 3 is provided at the connection between the valve body 4 and the valve cover 2. A second O-shaped sealing ring 8 is provided at the connection between the valve core 5 and the valve cover 2.

[0030] Connecting pipes 7 communicating with the rhombus-shaped passage 41 are disposed at both ends of the valve body 4 , and the apex of the rhombus-shaped passage 41 is tangent to the inner diameter of the connecting pipe 7 .

[0031] A connecting flange 9 is provided at the end of the connecting pipe 7 .

[0032] After the present invention is assembled, the error between the center of the diamond hole 51 on the valve core 5 and the diamond diameter 41 on the valve body 4 in the vertical direction does not exceed 1mm (when the diameter of the air main pipeline is less than or equal to DN50, this error does not exceed 0.5mm). The present invention is connected to the air main pipeline through the left and right connecting flanges 9, and a flange-specific gasket is placed between the flanges.

[0033] The electric actuator 1 has multiple air flow control modes, such as on-site / remote, electric / manual, etc. When in use, the electric actuator 1 at the top of the device drives the valve core 5, so that the valve core 5 and the valve body 4 rotate relative to each other, thereby changing the overlapping area of ​​the diamond hole 51 on the valve core 5 and the diamond diameter 41 on the valve body 4, realizing the change of the valve diameter, and finally performing linear regulation control on the air flow. Figure 4 The figure shows the relationship between the valve opening and the flow rate of the present invention. In the figure, the horizontal axis is the valve opening and the vertical axis is the air flow rate. Figure 4 It can be seen from the figure that the valve opening of the present invention has a good linear relationship with the air flow rate.

[0034] The angular travel α≤90° generated by the valve core 5 and the valve body 4 can realize linear regulation control of 0-100% of the air flow. The present invention is particularly suitable for a valve for linearly regulating air flow in a low oxygen aeration control system of a municipal sewage treatment plant.

Claims

1. A diamond-shaped regulating electric valve, comprising a valve body, a valve core and a valve cover, wherein the valve core is rotatably connected to the valve body, the valve cover covers the valve body and the valve core, and the valve core is connected to an electric actuator. Features: The valve body is provided with a rhombus-shaped passage (41), the valve core (5) is provided with a rhombus-shaped hole (51), and the cross-sectional area of ​​the rhombus-shaped passage (51) is equal to that of the rhombus-shaped passage (41); The diamond-shaped hole (51) and the diamond-shaped passage (41) are in a square shape; The upper and lower edges of the valve core (5) are respectively provided with a first convex edge (52), and the edge of the rhombus hole (51) on the valve core (5) is provided with a second convex edge (53), and both the first convex edge (52) and the second convex edge (53) are in contact with the inner wall of the valve body (4); Connecting pipes (7) communicating with the rhombus-shaped passage (41) are provided at both ends of the valve body (4), and the apex of the rhombus-shaped passage (41) is tangent to the inner diameter of the connecting pipe (7).

2. The adjustable electric valve with a diamond-shaped diameter according to claim 1, Features: A rolling bearing (6) is provided at the rotation connection between the valve core (5) and the valve body (4).

3. A diamond-shaped regulating electric valve according to claim 1 or 2, Features: A first sealing ring (3) is provided at the connection between the valve body (4) and the valve cover (2).

4. The adjustable electric valve with a diamond-shaped diameter according to claim 3, Features: A second sealing ring (8) is provided at the connection between the valve core (5) and the valve cover (2).

5. The adjustable electric valve with a diamond-shaped diameter according to claim 4, Features: A connecting flange (9) is provided at the end of the connecting pipe (7).

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