Valve device for accurate flow control

Abstract

The utility model discloses a valve device for accurate flow control, which belongs to the technical field of valve control and comprises a valve pipe, an adjusting pipe is fixedly mounted on one side of the valve pipe, and two groups of mounting racks are symmetrically and fixedly mounted on one side, far away from the valve pipe, in the adjusting pipe. According to the valve device for accurate flow control, by arranging a rotating ring, a pressure spring, a positioning sleeve and a positioning clamping strip, the positioning sleeve is pushed to be away from the rotating ring, so that the positioning clamping strip is separated from a positioning clamping groove, and the rotating ring is controlled to rotate by a proper angle on the surface of the adjusting pipe until the positioning clamping strip corresponds to the positioning clamping groove; the positioning sleeve is loosened, and the positioning sleeve is ejected to the surface of the rotating ring under the springback action of the compression spring, so that the positioning clamping strips are clamped in the corresponding positioning clamping grooves, and the rotating ring is prevented from rotating randomly between the adjusting pipe and the positioning sleeve to influence the rotating angle of the adjusting plate in the adjusting pipe; therefore, the flow of liquid passing through the inside of the adjusting pipe is changed.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve control, and particularly relates to a valve device for precise flow control. Background Technique

[0002] A valve is a pipeline accessory used to open and close pipelines, control the flow direction, adjust and control the parameters of the transported medium. It is a control component in a fluid transportation system and has functions such as cutoff, regulation, diversion, prevention of backflow, pressure stabilization, flow splitting, or overflow pressure relief.

[0003] When the existing valve device adjusts the flow rate, the adjusting plate is prone to rotate inside the adjusting pipe due to the pressure change when the liquid flows through, resulting in a change in the flow rate inside the adjusting pipe. Therefore, improvement is needed. Content of the Utility Model

[0004] In order to overcome the above defects, the utility model provides a valve device for precise flow control, which solves the problem that when the existing valve device is in liquid circulation, the adjusting plate is prone to rotate inside the adjusting pipe due to the pressure change when the liquid flows through, resulting in a change in the flow rate inside the adjusting pipe.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A valve device for precise flow control, including a valve pipe, one side of the valve pipe is fixedly installed with an adjusting pipe, on the side of the adjusting pipe far from the valve pipe, two groups of mounting brackets are symmetrically and fixedly installed, an adjusting plate is rotatably installed between the two groups of mounting brackets inside the adjusting pipe, a rotating ring is provided on the surface of the adjusting pipe corresponding to the adjusting plate, and a positioning sleeve is slidably provided on the surface of the rotating ring;

[0006] One side of the positioning sleeve is fixedly installed with a retaining ring, six pressing rods are fixedly installed at equal angles on the side of the retaining ring far from the positioning sleeve, a fixed ring is fixedly installed on the surface of the adjusting pipe, and the ends of the six pressing rods far from the retaining ring pass through the fixed ring and are fixedly installed with an annular connecting plate. A pressing spring is provided on the surface of the pressing rod between the fixed ring and the retaining ring.

[0007] As a further solution of the utility model: A valve core is rotatably installed at the central position inside the valve pipe, and the top end of the valve core passes through the valve pipe and extends to the outside of the valve pipe and is fixedly installed with a handwheel.

[0008] As a further solution of the utility model: Three groups of through slots one are provided at equal angles on the surface of the mounting bracket, and three groups of arc-shaped limiting slots are provided at equal angles on the surface of the adjusting pipe between the two groups of mounting brackets.

[0009] As a further solution of the utility model: Three groups of through slots two are provided at equal angles on the surface of the adjusting plate, and the through slots two correspond to the through slots one.

[0010] As a further solution of the present utility model: Three limit clamping columns are fixedly installed on the surface of the adjusting plate at equal angles, and the limit clamping columns correspond to the arc-shaped limit grooves. The three limit clamping columns pass through the arc-shaped limit grooves and extend to the outside of the adjusting pipe to be fixedly connected with the rotating ring.

[0011] As a further solution of the present utility model: Three positioning card slots are provided on the surface of the rotating ring at equal angles, and three positioning card strips are fixedly installed on the inner wall of the positioning sleeve at equal angles, and the positioning card strips correspond to the positioning card slots.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For the valve device for precise flow control, by setting the rotating ring, compression spring, positioning sleeve and positioning card strip, the positioning sleeve is pushed away from the rotating ring to make the positioning card strip disengage from the positioning card slot. After controlling the rotating ring to rotate at an appropriate angle on the surface of the adjusting pipe until the positioning card strip corresponds to the positioning card slot, release the positioning sleeve, and under the elastic return of the compression spring, the positioning sleeve is pushed towards the surface of the rotating ring to ensure that the positioning card strip is stuck inside the corresponding positioning card slot, so as to ensure that the rotating ring will not rotate randomly between the adjusting pipe and the positioning sleeve, affecting the rotation angle of the adjusting plate inside the adjusting pipe and causing the liquid flow rate passing through the inside of the adjusting pipe to change.

[0014] 2. For the valve device for precise flow control, by setting the mounting frame, adjusting plate, limit clamping columns and arc-shaped limit grooves, hold the rotating ring and rotate it on the surface of the adjusting pipe, control the limit clamping columns to rotate inside the arc-shaped limit grooves, and limit the rotation angle of the adjusting plate inside the adjusting pipe to ensure that when the adjusting plate rotates between the two mounting frames, the first through groove and the second through groove can correspond, which is convenient for adjusting the liquid flow rate passing through the inside of the adjusting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional sectional structure schematic diagram of the present utility model;

[0016] Figure 2 is a three-dimensional structure schematic diagram of the adjusting pipe and the mounting frame of the present utility model;

[0017] Figure 3 is a three-dimensional sectional structure schematic diagram of the adjusting plate and the rotating ring of the present utility model;

[0018] Figure 4 is a three-dimensional sectional structure schematic diagram of the compression spring, fixed ring and positioning sleeve of the present utility model;

[0019] In the figure: 1, valve pipe; 2, valve core; 3, handwheel; 4, adjusting pipe; 5, mounting bracket; 6, first through groove; 7, arc-shaped limiting groove; 8, adjusting plate; 9, second through groove; 10, limiting clamping post; 11, rotating ring; 12, positioning clamping groove; 13, fixing ring; 14, pressing rod; 15, annular connecting plate; 16, retaining ring; 17, pressing spring; 18, positioning sleeve; 19, positioning clamping strip. Specific embodiments

[0020] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0021] As Figures 1-4 shown, the present utility model provides a technical solution: a valve device for precise flow control, including a valve pipe 1. A valve core 2 is rotatably installed at the central position inside the valve pipe 1, and the top end of the valve core 2 passes through the valve pipe 1 and extends to the outside of the valve pipe 1 and is fixedly installed with a handwheel 3. By providing the valve core 2, rotating the handwheel 3 controls the rotation of the valve core 2 inside the valve pipe 1, thereby controlling the flow of liquid inside the valve pipe 1.

[0022] One side of the valve pipe 1 is fixedly installed with an adjusting pipe 4. On the side of the adjusting pipe 4 far from the valve pipe 1, two groups of mounting brackets 5 are symmetrically and fixedly installed. The surface of the mounting bracket 5 is provided with three groups of first through grooves 6 at equal angles. On the surface of the adjusting pipe 4 between the two groups of mounting brackets 5, three groups of arc-shaped limiting grooves 7 are provided at equal angles. An adjusting plate 8 is rotatably installed inside the adjusting pipe 4 between the two groups of mounting brackets 5. The surface of the adjusting plate 8 is provided with three groups of second through grooves 9 at equal angles, and the second through grooves 9 correspond to the first through grooves 6. Due to the provision of the first through grooves 6 and the second through grooves 9, when there is an overlapping part between the first through grooves 6 and the second through grooves 9, the liquid can flow through the overlapping part of the first through grooves 6 and the second through grooves 9, thereby adjusting the size of the liquid flow.

[0023] Three groups of limiting clamping posts 10 are fixedly installed on the surface of the adjusting plate 8 at equal angles, and the limiting clamping posts 10 correspond to the arc-shaped limiting grooves 7. The three groups of limiting clamping posts 10 pass through the arc-shaped limiting grooves 7 and extend to the outside of the adjusting pipe 4 and are fixedly connected with a rotating ring 11. By providing the limiting clamping posts 10 and the arc-shaped limiting grooves 7, holding the rotating ring 11 controls the rotation of the limiting clamping posts 10 inside the arc-shaped limiting grooves 7, thereby restricting the rotation angle of the rotating ring 11 on the surface of the adjusting pipe 4.

[0024] The surface of the adjusting pipe 4 corresponding to the adjusting plate 8 is provided with a rotating ring 11. A positioning sleeve 18 is slidably arranged on the surface of the rotating ring 11; three groups of positioning clamping grooves 12 are provided on the surface of the rotating ring 11 at equal angles. Three groups of positioning clamping strips 19 are fixedly installed on the inner wall of the positioning sleeve 18 at equal angles, and the positioning clamping strips 19 correspond to the positioning clamping grooves 12. Due to the provision of the positioning clamping grooves 12 and the positioning clamping strips 19, after the positioning clamping strips 19 are clamped into the corresponding positioning clamping grooves 12, the rotating ring 11 is clamped and fixed on the surface of the adjusting pipe 4 to ensure that the rotating ring 11 will not rotate randomly on the surface of the adjusting pipe 4.

[0025] A retaining ring 16 is fixedly installed on one side of the positioning sleeve 18. Six pressing rods 14 are fixedly installed at equal angles on the side of the retaining ring 16 away from the positioning sleeve 18. A fixing ring 13 is fixedly installed on the surface of the adjusting pipe 4. One ends of the six pressing rods 14 away from the retaining ring 16 pass through the fixing ring 13 and are fixedly installed with an annular connecting plate 15. A pressing spring 17 is arranged on the surface of the pressing rod 14 between the fixing ring 13 and the retaining ring 16. By providing the pressing spring 17, under the rebounding action of the pressing spring 17, the retaining ring 16 is pressed towards the rotating ring 11, so that the positioning sleeve 18 can be stuck on the surface of the rotating ring 11, thereby clamping and fixing the rotating ring 11.

[0026] The working principle of the present utility model is as follows:

[0027] Turn the handwheel 3 to control the valve core 2 to rotate and open inside the valve pipe 1, push the retaining ring 16 away from the rotating ring 11, so that the positioning sleeve 18 is separated from the rotating ring 11. Hold the rotating ring 11 and control the adjusting plate 8 to rotate inside the adjusting pipe 4, thereby adjusting the overlapping size of the first through groove 6 and the second through groove 9, and controlling the flow rate inside the adjusting pipe 4. After the rotating ring 11 rotates a certain angle, release the retaining ring 16, and under the rebounding action of the pressing spring 17, the positioning sleeve 18 is pressed against the surface of the rotating ring 11, ensuring that the positioning card strip 19 can be inserted into the corresponding positioning card slot 12, ensuring that the adjusting plate 8 will not rotate randomly inside the adjusting pipe 4 due to the liquid pressure when the liquid flows through the inside of the adjusting pipe 4, thereby affecting the flow rate of the liquid inside the adjusting pipe 4.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0029] The above has described the preferred embodiments of this patent in detail, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of this patent.

Claims

1. A valve device for precise flow control, comprising a valve tube (1), characterized in that: An adjusting tube (4) is fixedly mounted on one side of the valve tube (1); two groups of mounting frames (5) are symmetrically fixedly mounted on the side of the adjusting tube (4) away from the valve tube (1); an adjusting plate (8) is rotatably mounted between the two groups of mounting frames (5) inside the adjusting tube (4); a rotating ring (11) is provided on the surface of the adjusting tube (4) corresponding to the adjusting plate (8); a positioning sleeve (18) is slidably mounted on the surface of the rotating ring (11); A retaining ring (16) is fixedly mounted on one side of the positioning sleeve (18); six groups of clamping rods (14) are fixedly mounted at equal angles on the side of the retaining ring (16) away from the positioning sleeve (18); a fixing ring (13) is fixedly mounted on the surface of the adjusting tube (4); and an annular connecting plate (15) is fixedly mounted on one end of the six groups of clamping rods (14) away from the retaining ring (16) through the retaining ring (13); and a clamping spring (17) is provided on the surface of the clamping rod (14) located between the retaining ring (13) and the retaining ring (16).

2. A valve device for precise flow control according to claim 1, characterized in that: A valve core (2) is rotatably mounted at the central position of the inner side of the valve tube (1), and a hand wheel (3) is fixedly mounted on the outer side of the valve tube (1) and extends through the top end of the valve core (2) to the outer side of the valve tube (1).

3. A valve device for precise flow control according to claim 1, characterized in that: The surface of the mounting frame (5) is provided with three groups of through grooves (6) at equal angles, and the surface of the adjustment tube (4) is provided with three groups of arc-shaped limiting grooves (7) at equal angles between the two groups of mounting frames (5).

4. A valve device for precise flow control according to claim 3, characterized in that: The surface of the adjustment plate (8) is provided with three groups of through slots 2 (9) at equal angles, and the through slots 2 (9) correspond to the through slots 1 (6).

5. A valve device for precise flow control according to claim 4, characterized in that: Three groups of limit clamping columns (10) are fixedly mounted at equal angles on the surface of the adjustment plate (8), and the limit clamping columns (10) correspond to the arc-shaped limit grooves (7). The three groups of limit clamping columns (10) pass through the arc-shaped limit grooves (7) and extend to the outside of the adjustment tube (4) and are fixedly connected to the rotating ring (11).

6. A valve device for precise flow control according to claim 1, characterized in that: The surface of the rotating ring (11) is provided with three groups of positioning slots (12) at equal angles, and the inner wall of the positioning sleeve (18) is fixedly provided with three groups of positioning strips (19) at equal angles, and the positioning strips (19) correspond to the positioning slots (12).

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