Flow regulation device

Abstract

The utility model discloses a flow regulating device which comprises a fluid channel, a shaft sleeve, a driving mechanism and a flow control column, an opening is formed in the fluid channel, the shaft sleeve is communicated with the fluid channel through the opening, the flow control column is arranged in the shaft sleeve, and the flow control column is driven by the driving mechanism to axially slide along the shaft sleeve; the flow control column comprises a column body and a flow control plug fixed at the bottom of the column body, a flow choking block is arranged in the fluid channel, the flow choking block is arranged at the opening and divides the fluid channel into a channel front section and a channel rear section, a flow control groove matched with the flow control plug in shape is formed in the flow choking block, the flow control plug is inserted into the flow control groove, and the flow control plug is connected with the flow choking block. A first fluid through hole is formed between the flow control groove and the channel front section, a second fluid through hole is formed between the flow control groove and the channel rear section, fluid in the channel front section sequentially flows through the first fluid through hole, the flow control groove and the second fluid through hole and then enters the channel rear section, and the flow control device has the advantages of being simple in structure, convenient to adjust, high in control precision and the like.

Description

Technical Field

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

[0002] Flow control valves are often required in pipe networks to adjust the flow of fluids (gas, liquid, etc.) in the pipe networks. Flow control valves generally include valve stems and valve stem drivers. The valve stem drivers can be manual or electric. The valve stem drivers can drive the valve stem to move up and down and extend from the pipe network. The flow in the pipe network is controlled by the extent to which the bottom of the valve stem extends into the pipe network, so as to adjust the flow of fluids in the pipe network. However, the accuracy of valve stem flow regulation varies. At the same time, when the valve stem driver is manual, the accuracy of controlling the movement of the valve stem cannot be controlled, which will also affect the accuracy of flow regulation. When the valve stem driver is electric, an electric push rod or a cylinder is generally used to drive the valve stem to move up and down. The accuracy of the electric push rod or the cylinder in driving the valve stem cannot meet the requirements in situations where high flow regulation accuracy is required.

[0003] Therefore, there is an urgent need to design a flow regulating device with simple structure and high flow regulation accuracy. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art and to provide a flow regulating device with simple structure, convenient regulation and high control accuracy.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A flow regulating device, characterized in that it comprises a fluid channel, a shaft sleeve, a driving mechanism and a flow control column, wherein an opening is provided on the fluid channel, the shaft sleeve is connected with the fluid channel through the opening, the flow control column is arranged in the shaft sleeve, and the flow control column is driven by the driving mechanism to slide axially along the shaft sleeve;

[0007] The flow control column comprises a column and a flow control plug fixed at the bottom of the column, a flow block is arranged in the fluid channel, the flow block is arranged at the opening to divide the fluid channel into a front section and a rear section of the channel, a flow control groove matching the shape of the flow control plug is opened on the flow block, the flow control plug is inserted into the flow control groove, a fluid through hole 1 is arranged between the flow control groove and the front section of the channel, a fluid through hole 2 is arranged between the flow control groove and the rear section of the channel, and the fluid in the front section of the channel flows through the fluid through hole 1, the flow control groove, and the fluid through hole 2 in sequence before entering the rear section of the channel;

[0008] The cooperation between the flow blocking block and the flow control column can accurately adjust the flow accuracy according to the position of the flow control column in the flow control groove. When the flow control plug is fully inserted into the flow control groove, the fluid passage can be disconnected.

[0009] The flow control plug and the flow control groove of the utility model are both in the shape of an inverted frustum or an inverted cone, and the size of the flow control plug is matched with the size of the flow control groove; they can not only play a guiding role so that the flow control plug can be smoothly inserted into the flow control groove, but also ensure that the passage is disconnected when the flow control plug is fully inserted into the flow control groove.

[0010] The front side wall of the flow control groove of the utility model is connected with the front section of the channel to form a fluid through hole 1, and the connection between the upper surface of the rear side wall of the flow control groove and the lower end of the sleeve is connected with the rear section of the channel to form a fluid through hole 2; the position setting of the fluid through hole further ensures the fluid on-off effect.

[0011] The outer diameter of the large diameter end of the flow control plug in the utility model is smaller than the outer diameter of the lower surface of the column, and a lower limit surface is formed between the large diameter end of the flow control plug and the lower surface of the column. The flow control plug is inserted in the flow control groove, and the lower limit surface abuts against the upper surface of the flow blocking block; when the flow control plug is completely inserted into the flow control groove, the lower limit surface abuts against the upper surface of the flow blocking block, thereby blocking the connection between the flow control groove and the second fluid through hole.

[0012] The shaft sleeve of the utility model comprises an upper shaft sleeve and a lower shaft sleeve which are coaxially arranged, the inner diameter of the upper shaft sleeve is larger than the inner diameter of the lower shaft sleeve, and a horizontal limit end surface is formed between the upper shaft sleeve and the lower shaft sleeve;

[0013] The upper end of the column extends radially outward to form a limiting boss, the outer diameter of the limiting boss matches the inner diameter of the upper sleeve, the outer diameter of the column matches the inner diameter of the lower sleeve, and the lower surface of the limiting boss matches the horizontal limiting end surface.

[0014] The utility model discloses an outer wall of the limiting boss and an inner wall of the upper sleeve, both of which are provided with guide vertical surfaces. The guide vertical surfaces on the outer wall of the limiting boss are in contact with and slide along the guide vertical surfaces on the inner wall of the upper sleeve, so as to limit the sliding direction of the flow control column, which can only move along the axial direction of the sleeve but cannot rotate circumferentially, thereby ensuring the accuracy of the flow control column in regulating the flow.

[0015] The utility model discloses a sealing groove is provided at the lower end of the column along the circumferential direction, and a sealing ring is provided in the sealing groove, which is used to realize the sealing between the flow control column and the inner wall of the shaft sleeve.

[0016] The driving mechanism of the utility model adopts a motor, an internal threaded hole is axially opened at the upper end of the column, an external thread is arranged on the motor shaft of the motor, the motor shaft of the motor extends into the internal threaded hole and is threadedly connected with the column, and the rotation of the motor shaft drives the flow control column to move axially.

[0017] A flow regulating device, characterized in that it includes a fluid channel, a sleeve, a motor and a flow control column, the fluid channel is provided with an opening, the sleeve is connected with the fluid channel through the opening, the flow control column is arranged in the sleeve, the flow control column includes a column and a flow control plug which can be extended into the fluid channel, the flow control plug is fixed at the lower end of the column, the upper end of the column is axially provided with an internal threaded hole, the motor shaft of the motor is provided with an external thread, the motor shaft of the motor extends into the internal threaded hole and is threadedly connected with the column, and the motor shaft rotates to drive the flow control column to move axially along the sleeve; the motor is used as the driving part, the structure is simple, the motor and the flow control column are matched, the installation, assembly and maintenance are convenient, the movement of the flow control column is controlled with high accuracy, and the flow regulation accuracy is high.

[0018] The outer wall of the flow control column of the utility model matches the shape and size of the inner wall of the sleeve. The outer wall of the column and the inner wall of the sleeve are both provided with guide vertical surfaces arranged along the axial direction. The guide vertical surfaces on the outer wall of the column are in contact with the guide vertical surfaces on the inner wall of the sleeve and slide along the guide vertical surfaces on the inner wall of the sleeve to limit the sliding direction of the flow control column, which can only move along the axial direction of the sleeve but cannot rotate circumferentially, thereby ensuring the accuracy of the flow control column in adjusting the flow.

[0019] The beneficial effects of the utility model are as follows: the cooperation between the flow blocking block and the flow control column can accurately adjust the flow accuracy according to the position of the flow control column in the flow control groove, and when the flow control plug is fully inserted into the flow control groove, the fluid passage can be disconnected; the motor is used as the driving part, the structure is simple, the cooperation between the motor and the flow control column is convenient for installation, assembly and maintenance, the movement of the flow control column is controlled with high accuracy, and the flow regulation accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 yes Figure 1 Main view.

[0022] Figure 3 yes Figure 2 Middle AA section view.

[0023] Figure 4 yes Figure 2 Middle BB section view.

[0024] Figure 5 This is the main view of the right side of the base.

[0025] Figure 6 yes Figure 5 Middle CC section view.

[0026] Figure 7 yes Figure 3 Enlarged view of point D in the middle.

[0027] Figure 8 yes Figure 5 Enlarged view of point E in the middle.

[0028] Fig. 9 It is a schematic diagram of the flow control column structure.

[0029] Fig.10 This is the main view of the flow control column.

[0030] Fig.11 yes Fig.10 Middle GG section view.

[0031] Reference numerals: base 1, sleeve 101, upper sleeve 1011, lower sleeve 1012, left guide surface 1013, right guide surface 1014;

[0032] External air inlet connector-201, internal air inlet connector-202, air outlet connector-203;

[0033] External air inlet channel 301, internal air inlet channel 302, air outlet channel 303, fluid through hole 1 3031, fluid through hole 2 3032, flow control groove 3033, flow blocking block 3034;

[0034] Motor-401, flow control column-402, column-4021, flow control plug-4022, limiting boss-4023, left vertical surface-40231, right vertical surface-40232, internal threaded hole-4024, sealing groove-4025. DETAILED DESCRIPTION

[0035] The utility model is described below in conjunction with the accompanying drawings and embodiments.

[0036] In this embodiment, gas flow control is described, which is also applicable to liquid flow control.

[0037] As shown in the accompanying drawings, a flow regulating device is provided with a base 1, a sleeve 101, a driving mechanism and a flow control column 402. An external air inlet channel 301, an internal air inlet channel 302 and an air outlet channel 303 are provided in the base 1. One end of the external air inlet channel 301 is connected to the external air inlet connector 201, and the other end is connected to the air outlet channel 303. One end of the internal air inlet channel 302 is connected to the internal air inlet connector 202, and the other end is connected to the air outlet channel 303. The air outlet channel 303 is away from the external air inlet channel 301, and one end of the internal air inlet channel 302 is connected to the air outlet connector 203.

[0038] An opening is provided on the air outlet channel 303, and the sleeve 101 is connected to the air outlet channel 303 through the opening. In this embodiment, the axis of the sleeve 101 is perpendicular to the axis of the air outlet channel 303, and the flow control column 402 is provided in the sleeve 101. The flow control column 402 is driven by a driving mechanism to slide axially along the sleeve 101.

[0039] The flow control column 402 includes a column 4021 and a flow control plug 4022 fixed at the bottom of the column 4021. The upper end of the column 4021 extends radially outward to form a limiting boss 4023. The outer diameter of the large diameter end of the flow control plug 4022 is smaller than the outer diameter of the lower surface of the column 4021. A lower limiting surface is formed between the large diameter end of the flow control plug 4022 and the lower surface of the column 4021. The shape of the flow control plug 4022 is an inverted frustum or an inverted cone.

[0040] The shaft sleeve 101 comprises an upper shaft sleeve 1011 and a lower shaft sleeve 1012 which are coaxially arranged. The inner diameter of the upper shaft sleeve 1011 is larger than the inner diameter of the lower shaft sleeve 1012. A horizontal limit end surface is formed between the upper shaft sleeve 1011 and the lower shaft sleeve 1012.

[0041] The outer diameter of the limiting boss 4023 matches the inner diameter of the upper sleeve 1011, the outer diameter of the column 4021 matches the inner diameter of the lower sleeve 1012, and the lower surface of the limiting boss 4023 matches the horizontal limiting end surface;

[0042] The left side of the outer wall of the limiting boss 4023 is provided with a left vertical surface 40231, and the right side is provided with a right vertical surface 40232. The left side of the inner wall of the upper sleeve 1011 is provided with a left guide surface 1013, and the right side is provided with a right guide surface 1014. The left vertical surface 40231 on the outer wall of the limiting boss 4023 fits with the left guide surface 1013 on the inner wall of the upper sleeve 1011, and the right vertical surface 40232 fits with the right guide surface 1014 on the inner wall of the upper sleeve 1011. The flow control column 402 slides along the left guide surface 1013 and the right guide surface 1014 on the inner wall of the upper sleeve 1011. The sliding direction of the flow control column is limited, and it can only move along the axial direction of the sleeve 101 but cannot rotate circumferentially, thereby ensuring the accuracy of the flow control column in adjusting the flow.

[0043] The air outlet channel 303 is provided with a flow block 3034, and the flow block 3034 is arranged at the opening to divide the air outlet channel 303 into a front section and a rear section of the channel. The flow block 3034 is provided with a flow control groove 3033 that matches the shape of the flow control plug 4022. In this embodiment, the shape of the flow control groove 3033 is an inverted cone or an inverted cone. The size of the flow control plug 4022 matches the size of the flow control groove 3033. The flow control plug 4022 is inserted into the flow control groove 3033. A fluid through hole 1 3031 is provided between the flow control groove 3033 and the front section of the channel, and a fluid through hole 2 3032 is provided between the flow control groove 3033 and the rear section of the channel. The fluid in the front section of the channel flows through the fluid through hole 1 3031, the flow control groove 3033, and the fluid through hole 2 3032 in sequence before entering the rear section of the channel.

[0044] The cooperation between the flow blocking block 3034 and the flow control column 402 can accurately adjust the flow accuracy according to the position of the flow control column 402 in the flow control groove 3033. When the flow control plug 4022 is fully inserted into the flow control groove 3033, the fluid passage can be disconnected. The shape setting of the flow control plug 4022 and the flow control groove 3033 can not only play a guiding role so that the flow control plug 4022 can be smoothly inserted into the flow control groove 3033, but also ensure that the passage is disconnected when the flow control plug 4022 is fully inserted into the flow control groove 3033.

[0045] In this embodiment, the front side wall of the flow control groove 3033 is connected to the front section of the channel to form a fluid through hole 1 3031, and the connection between the upper surface of the rear side wall of the flow control groove 3033 and the lower end of the sleeve is connected to the rear section of the channel to form a fluid through hole 2 3032; the position setting of the fluid through hole further ensures the fluid on-off effect.

[0046] When the flow control plug 4022 is fully inserted into the flow control groove, the lower limit surface abuts against the upper surface of the flow blocking block, which can block the connection between the flow control groove and the second fluid through hole 3032. At this time, the lower surface of the limit boss 4023 abuts against the horizontal limit end surface.

[0047] A sealing groove 4025 is circumferentially formed at the lower end of the column 4021 , and a sealing ring is disposed in the sealing groove 4025 , which is used to achieve sealing between the flow control column 402 and the inner wall of the shaft sleeve 101 .

[0048] The driving mechanism adopts a motor 401, which is connected to a controller. The controller adopts a PLC controller. An internal threaded hole 4024 is axially provided at the upper end of the column 4021. An external thread is provided on the motor shaft of the motor 401. The motor shaft of the motor extends into the internal threaded hole 4024 and is threadedly connected to the column 4021. The motor housing is provided on the shaft sleeve and fixedly connected to the base. The motor shaft rotates to drive the flow control column 402 to move axially.

[0049] When the utility model is used:

[0050] 1. The gas enters the gas outlet channel 303 from the external gas inlet channel 301 through the external gas inlet connector 201, or enters the gas outlet channel 303 from the internal gas inlet channel 302 through the internal gas inlet connector 202. After entering the gas outlet channel 303, the gas enters the flow control groove 3033 from the fluid through hole 1 3031, and then flows out from the gas outlet connector 203 through the fluid through hole 2 3032;

[0051] 2. When the gas flow needs to be reduced, the controller controls the motor shaft to rotate in the forward direction. Since the flow control column is threadedly connected to the motor shaft, and the flow control column 402 is restricted by the left vertical surface 40231 and the right vertical surface 40232, the flow control column 402 moves downward along the shaft sleeve 101, and the flow control plug 4022 moves toward the bottom of the flow control groove 3033, thereby reducing the gas flow.

[0052] 3. The motor shaft continues to rotate in the forward direction. When the flow control column 402 is completely inserted into the flow control groove 3033, the lower surface of the column 4021 abuts against the upper surface of the flow blocking block 3034, and the lower surface of the limiting boss 4023 abuts against the horizontal limiting end surface, and the flow of gas is completely blocked at this time;

[0053] 4. When the gas flow needs to be increased, the controller controls the motor shaft to rotate in the opposite direction, driving the flow control column 402 to move upward along the shaft sleeve 101 axially.

Claims

1. A flow regulating device, characterized in that: It comprises a fluid channel, a shaft sleeve, a driving mechanism and a flow control column, wherein the fluid channel is provided with an opening, the shaft sleeve is connected with the fluid channel through the opening, the flow control column is arranged in the shaft sleeve, and the flow control column is driven by the driving mechanism to slide axially along the shaft sleeve; The flow control column includes a column body and a flow control plug fixed at the bottom of the column body, a flow block is provided in the fluid channel, the flow block is arranged at the opening to divide the fluid channel into a front section and a rear section of the channel, a flow control groove matching the shape of the flow control plug is opened on the flow block, the flow control plug is inserted into the flow control groove, a fluid through hole 1 is provided between the flow control groove and the front section of the channel, a fluid through hole 2 is provided between the flow control groove and the rear section of the channel, and the fluid in the front section of the channel flows through fluid through hole 1, the flow control groove and fluid through hole 2 in sequence and then enters the rear section of the channel.

2. A flow regulating device according to claim 1, characterized in that: The flow control plug and the flow control slot are both in the shape of an inverted frustum or an inverted cone, and the size of the flow control plug matches the size of the flow control slot.

3. A flow regulating device according to claim 1 or 2, characterized in that: The front side wall of the flow control groove is connected with the front section of the channel to form a fluid through hole 1, and the connection between the upper surface of the rear side wall of the flow control groove and the lower end of the sleeve is connected with the rear section of the channel to form a fluid through hole 2.

4. A flow regulating device according to claim 3, characterized in that: The outer diameter of the large diameter end of the flow control plug is smaller than the outer diameter of the lower surface of the cylinder, and a lower limit surface is formed between the large diameter end of the flow control plug and the lower surface of the cylinder. The flow control plug is inserted in the flow control groove, and the lower limit surface is against the upper surface of the flow blocking block.

5. A flow regulating device according to claim 1, 2 or 4, characterized in that: The shaft sleeve comprises an upper shaft sleeve and a lower shaft sleeve which are coaxially arranged, the inner diameter of the upper shaft sleeve is larger than the inner diameter of the lower shaft sleeve, and a horizontal limit end surface is formed between the upper shaft sleeve and the lower shaft sleeve; The upper end of the column extends radially outward to form a limiting boss, the outer diameter of the limiting boss matches the inner diameter of the upper sleeve, the outer diameter of the column matches the inner diameter of the lower sleeve, and the lower surface of the limiting boss matches the horizontal limiting end surface.

6. A flow regulating device according to claim 5, characterized in that: The outer wall of the limiting boss and the inner wall of the upper sleeve are both provided with guide vertical surfaces. The guide vertical surface on the outer wall of the limiting boss is in contact with the guide vertical surface on the inner wall of the upper sleeve and slides along the guide vertical surface on the inner wall of the upper sleeve.

7. A flow regulating device according to claim 1 or 2 or 4 or 6, characterized in that: A sealing groove is provided at the lower end of the column along the circumferential direction, and a sealing ring is provided in the sealing groove.

8. A flow regulating device according to claim 1 or 2 or 4 or 6, characterized in that: The driving mechanism adopts a motor, an internal threaded hole is axially opened at the upper end of the column, an external thread is arranged on the motor shaft of the motor, the motor shaft of the motor extends into the internal threaded hole and is threadedly connected with the column, and the rotation of the motor shaft drives the flow control column to move axially.

9. A flow regulating device, characterized in that: It includes a fluid channel, a sleeve, a motor and a flow control column. The fluid channel is provided with an opening, the sleeve is connected with the fluid channel through the opening, the flow control column is arranged in the sleeve, the flow control column includes a column and a flow control plug which can be extended into the fluid channel, the flow control plug is fixed at the lower end of the column, the upper end of the column is provided with an internal threaded hole along the axial direction, the motor shaft of the motor is provided with an external thread, the motor shaft of the motor extends into the internal threaded hole and is threadedly connected with the column, and the motor shaft rotates to drive the flow control column to move axially along the sleeve.

10. A flow regulating device according to claim 9, characterized in that: The outer wall of the flow control column is matched with the shape and size of the inner wall of the sleeve. The outer wall of the column and the inner wall of the sleeve are both provided with guide vertical surfaces arranged along the axial direction. The guide vertical surfaces on the outer wall of the column are in contact with the guide vertical surfaces on the inner wall of the sleeve and slide along the guide vertical surfaces on the inner wall of the sleeve.

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