Flow adjusting ball valve

Abstract

The utility model discloses a flow regulating ball valve, belongs to the technical field of ball valves, and solves the problems that the structure of a valve ball of a V-shaped ball valve is too thin, the valve ball which is not similar to a normal valve ball has higher structural strength, and the valve ball is frequently opened and closed under the condition of high-flow or extremely high-flow-rate fluid transportation, so that the valve ball cannot be opened and closed easily. And the problem that damage is easy to occur in the prior art is solved. Comprising a valve ball, a channel is formed in the valve ball, the section of the channel is in a step shape, and the opening width of the channel is gradually increased from the two ends to the middle. In the working process of the flow regulating valve, only the valve ball needs to be rotated to regulate the flow, the exposed part of the channel can be gradually enlarged in a linear mode, and regular flow regulation is achieved. Due to the fact that the groove widths of the first-stage channel, the second-stage channel, the third-stage channel and the third-stage channel are gradually increased in sequence, flow changes caused by rotation of the valve ball are stepped and show three-section linear and regular increasing speed, meanwhile, the valve ball is of a spherical structure, impact resistance is enhanced, and the valve ball is not prone to being damaged due to fluid impact.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a flow regulating ball valve. Background Art

[0002] The ball valve adjusts the flow rate by changing the relative angle between the ball and the pipeline axis. This adjustment method allows the ball valve to accurately control the flow rate and flow rate of the fluid in a partially open state. When the ball of the ball valve rotates an angle and the channel on the ball is partially aligned with the connection port of the pipeline, the fluid begins to flow, and as the rotation angle of the ball increases, the flow area gradually increases, and the flow rate also increases accordingly.

[0003] Since the passage of the valve ball itself is cylindrical, it can only open and close when adjusting the fluid flow in the valve body. If precise control of the fluid is required, it is necessary to make the opening change of the passage in the valve ball follow a certain regularity, just like a V-type ball valve. However, the valve ball of the V-type ball valve is too thin in structure and does not have a strong structural strength like a normal valve ball. When encountering large flow or extremely fast flow rate fluid transportation, it is more prone to damage with frequent opening and closing. Therefore, a ball valve is required to be able to adjust the flow and also have good structural strength to withstand fluid impact.

[0004] Therefore, a flow regulating ball valve is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a flow regulating ball valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A flow regulating ball valve comprises a valve ball. A channel is provided on the valve ball. The cross section of the channel is stepped, and the opening width of the channel is gradually increased from both ends to the middle.

[0008] Preferably, the channel includes a tertiary channel located in the middle, secondary channels located on both sides of the tertiary channel, and a primary channel located on one side of the secondary channel, and the groove widths of the primary channel, the secondary channel, and the tertiary channel are arranged to increase in sequence.

[0009] Preferably, the cross-sections of the primary channel, the secondary channel, and the tertiary channel are all rectangular.

[0010] Preferably, it also includes a valve body and a valve stem, and the valve stem penetrates the valve body and is fixedly connected to the valve ball.

[0011] Preferably, it also includes a fixing component, a valve seat, and a stepper motor, wherein the valve seat is fixedly connected to the valve body via the fixing component, and the stepper motor is fixedly connected to the valve seat, and the output shaft of the stepper motor is coaxially connected to the valve stem.

[0012] Preferably, it also includes a valve tube, which is fixedly connected to both ends of the valve body through a fixing assembly.

[0013] Preferably, the fixing assembly includes a plurality of lower connecting seats fixedly connected to the outer ring of the valve tube, a chassis fixedly connected to the bottom surface of the valve seat, an upper connecting seat fixedly connected to the chassis, a support rod, and connecting bolts. The connecting bolts penetrate the lower connecting seats on the valve tubes on both sides and are threadedly connected with nuts. The lower end of the support rod is penetrated by the connecting bolts, and the upper end of the support rod is fixedly connected to the upper connecting seat by a connecting screw.

[0014] The utility model has the following beneficial effects:

[0015] In the actual working process of the utility model, if it is necessary to adjust the flow rate, it is only necessary to rotate the valve ball to make the exposed part of the channel expand in a linear growth manner, so that the flow rate regulation is regular. At the same time, due to the reason that the groove widths of the primary channel, the primary channel, the secondary channel, and the tertiary channel are increased in sequence, the flow rate change brought about by the rotation of the valve ball is also step-by-step, and there are three sections of linear and regular growth rates. At the same time, the valve ball is maintained to maintain a spherical structure, which has better impact resistance and is not easily damaged by fluid impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0018] Figure 3 It is a partial cross-sectional view of the utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0020] 1. Valve body; 2. Valve tube; 3. Lower connecting seat; 4. Connecting bolts; 5. Support rod; 6. Upper connecting seat; 7. Chassis; 8. Valve seat; 9. Stepper motor; 10. Valve stem; 11. Connecting screws; 12. Sealing sheet; 13. Sealing sleeve; 14. Valve ball; 15. Primary channel; 16. Secondary channel; 17. Tertiary channel. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] A flow regulating ball valve, such as Figure 1 and 3 As shown, it includes a valve body 1, a valve stem 10, a valve ball 14, a valve tube 2, a fixing assembly, a valve seat 8, and a stepper motor 9. The valve stem 10 passes through the valve body 1 and is fixedly connected to the valve ball 14. The valve seat 8 is fixedly connected to the valve body 1 through a fixing assembly, and the stepper motor 9 is fixedly connected to the valve seat 8. The output shaft of the stepper motor 9 is coaxially connected to the valve stem 10, and the valve tube 2 is fixedly connected to both ends of the valve body 1 through a fixing assembly.

[0023] At the same time, a sealing sleeve 13 is provided on the outer side of the valve stem 10 , and the lower end of the sealing sleeve 13 is fixedly connected to a sealing sheet 12 arranged in contact with the outer peripheral wall of the valve body 1 , both of which are made of stainless steel, and the upper end of the sealing sleeve 13 is arranged in contact with the bottom surface of the chassis 7 .

[0024] like Figure 2 As shown, the fixing assembly includes a plurality of lower connecting seats 3 fixedly connected to the outer ring of the valve tube 2, a chassis 7 fixedly connected to the bottom surface of the valve seat 8, an upper connecting seat 6 fixedly connected to the chassis 7, a support rod 5, and a connecting bolt 4. The connecting bolt 4 passes through the lower connecting seats 3 on the valve tubes 2 on both sides, and is threadedly connected with a nut. The lower end of the support rod 5 is penetrated by the connecting bolt 4, and the upper end of the support rod 5 is fixedly connected to the upper connecting seat 6 by a connecting screw 11.

[0025] like Figure 4 As shown, a channel is opened on the valve ball 14, the cross section of the channel is stepped, and the opening width of the channel is gradually increased from both ends to the middle. The channel includes a tertiary channel 17 located in the middle, secondary channels 16 located on both sides of the tertiary channel 17, and a primary channel 15 located on one side of the secondary channel 16. The groove widths of the primary channel 15, the secondary channel 16, and the tertiary channel 17 are increased in sequence, and the cross sections of the primary channel 15, the secondary channel 16, and the tertiary channel 17 are all rectangular.

[0026] When the utility model is actually working, the valve stem 10 is driven to rotate by the stepper motor 9. When the valve stem 10 rotates, it can drive the valve ball 14 to rotate in the valve body 1. When the valve ball 14 rotates, its channel is no longer blocked by the inner wall of the valve body 1. First, the primary channel 15 is exposed. Since its cross-section is rectangular, its available cross-sectional area of ​​the channel increases linearly. When the primary channel 15 is fully exposed, it enters the second stage, and the secondary channel 16 is used to increase the flow rate. At this time, the flow rate growth coefficient is higher, but it still maintains linear growth. Similarly, the tertiary channel 17 is also the same. After the tertiary channel 17 is opened, it returns to the secondary channel 16 until the primary channel 15 circulates, and finally the entire channel is fully opened to facilitate fluid flow regulation, and the flow regulation can be more precise. At the same time, the valve ball 14 is kept in a spherical structure, which has better impact resistance and is not prone to damage to the valve ball 14.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flow regulating ball valve, comprising a valve ball (14), characterized in that: The valve ball (14) is provided with a channel, the cross section of the channel is stepped, and the opening width of the channel gradually increases from both ends to the middle.

2. A flow regulating ball valve according to claim 1, characterized in that: The channel comprises a tertiary channel (17) located in the middle, secondary channels (16) located on both sides of the tertiary channel (17), and a primary channel (15) located on one side of the secondary channel (16), and the groove widths of the primary channel (15), the secondary channel (16), and the tertiary channel (17) are arranged to increase in sequence.

3. A flow regulating ball valve according to claim 2, characterized in that: The cross sections of the primary channel (15), the secondary channel (16), and the tertiary channel (17) are all rectangular.

4. A flow regulating ball valve according to claim 1, characterized in that: It also comprises a valve body (1) and a valve stem (10); the valve stem (10) penetrates the valve body (1) and is fixedly connected to the valve ball (14).

5. A flow regulating ball valve according to claim 4, characterized in that: It also includes a fixing assembly, a valve seat (8), and a stepper motor (9), wherein the valve seat (8) is fixedly connected to the valve body (1) via the fixing assembly, and the stepper motor (9) is fixedly connected to the valve seat (8), and the output shaft of the stepper motor (9) is coaxially connected to the valve stem (10).

6. A flow regulating ball valve according to claim 5, characterized in that: It also comprises a valve tube (2), wherein the valve tube (2) is fixedly connected to two ends of the valve body (1) via a fixing assembly.

7. A flow regulating ball valve according to claim 6, characterized in that: The fixing assembly comprises a plurality of lower connecting seats (3) fixedly connected to the outer ring of the valve tube (2), a chassis (7) fixedly connected to the bottom surface of the valve seat (8), an upper connecting seat (6) fixedly connected to the chassis (7), a support rod (5), and a connecting bolt (4), wherein the connecting bolt (4) passes through the lower connecting seats (3) on the valve tubes (2) on both sides and is threadedly connected with a nut, the lower end of the support rod (5) is passed through by the connecting bolt (4), and the upper end of the support rod (5) is fixedly connected to the upper connecting seat (6) by a connecting screw (11).

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