An automatic flow control device based on frequency conversion technology and its use method

Abstract

The present invention belongs to the field of valve technology, and in particular to an automatic flow control device based on frequency conversion technology and a method for using the same. In view of the problem that static liquid in an existing flow valve is prone to freezing under low ambient temperature, the size of the valve opening cannot be accurately controlled, the control amount cannot be intuitively displayed, and the dirt attached to the valve plate and the valve opening affects the use of the flow valve, the following scheme is proposed, which includes a pipe body, a flow meter is fixed to the bottom of the pipe body by bolts, and the ends of the pipe body and the flow meter that are away from each other are fixed to pipes by bolts; and also includes a valve plate fixed in the pipe body, a valve flap is provided in the valve plate. In the present invention, the opening size of the valve opening can be controlled by rotating the rotating shaft and the valve flap, so as to control the flow rate, and when the rotating shaft rotates, not only the rotation angle of the valve flap can be clearly determined, but also the dirt on the top of the valve plate and the inner wall of the valve opening can be scraped off by the first scraper and the second scraper.

Description

Technical Field

[0001] The present invention relates to the field of valve technology, and in particular to an automatic flow control device based on frequency conversion technology and a use method thereof. Background Art

[0002] A flow valve is a device used to control the flow of fluid in a pipeline. Its working principle is based on the principle of fluid mechanics. By adjusting the position of the valve core through the adjusting device, the opening of the valve port will change accordingly, thereby achieving precise control of the fluid flow.

[0003] However, the flow valve in the prior art still has some shortcomings when used:

[0004] 1. In the cold winter, the stationary liquid in the flow valve is prone to freezing under the low temperature outside, causing the flow control device to freeze and be unable to adjust;

[0005] 2. When adjusting the flow valve, the size of the valve port cannot be accurately controlled, so the scale of the flow valve adjustment cannot be controlled, and the control amount cannot be displayed intuitively;

[0006] 3. When the flow valve is used for a long time, dirt is likely to adhere to the valve plate and valve port, affecting the use of the flow valve.

[0007] In view of the above problems, the present invention proposes an automatic flow control device based on frequency conversion technology and a method for using the same. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the existing flow valve, such as the static liquid is prone to freezing, the size of the valve port cannot be accurately controlled, the control amount cannot be intuitively displayed, and the dirt attached to the valve plate and the valve port affects the use of the flow valve. An automatic flow control device based on frequency conversion technology and its use method are proposed.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] An automatic flow control device based on frequency conversion technology comprises a pipe body, a flow meter is fixed to the bottom of the pipe body by bolts, and a pipe is fixed to one end of the pipe body and the flow meter away from each other by bolts;

[0011] It also includes a valve plate fixed in the tube body, a valve disc is arranged in the valve plate, and the valve plate and the valve disc cooperate to control the flow rate, an annular box body is fixed to the outer wall of the tube body, a scale is arranged on the outer side of the annular box body, a first scraper is rotatably connected to the top of the valve plate, and the first scraper cooperates with the annular box body to clearly display the rotation angle of the valve disc;

[0012] It also includes a lifting ring, a circular ring and an annular liquid bin, and the lifting ring is sleeved on the outer wall of the tube body, the annular liquid bin is fixedly sleeved on the outer wall of the tube body, and the annular liquid bin is located above the lifting ring, the circular ring is slidably arranged in the tube body, and the cooperation between the lifting ring and the annular liquid bin can circulate the static water in the tube body;

[0013] A circulation structure is arranged in the annular liquid bin, and the circulation structure includes a liquid outlet pipe, a liquid inlet pipe and an annular sealing plate with multiple one-way valves. The top end of the liquid inlet pipe slides through the lifting ring, and the annular sealing plate moves up and down to drive the liquid in the pipe body to flow through the liquid inlet pipe, the annular liquid bin and the liquid outlet pipe and then flow back into the pipe body, so as to keep the water in the pipe body in a circulating flow state to prevent the water from being stagnant and freezing;

[0014] A control structure is arranged in the valve plate, the control structure comprises a rotating chamber and a rotating shaft, the valve flap is fixedly sleeved on the outer wall of the rotating shaft, a valve port is arranged in the valve plate, and the valve port cooperates with the valve flap to control the rotation angle of the valve flap;

[0015] A display structure is arranged above the valve plate, and the display structure includes a fixed ring and two third magnets. Two fourth magnets are slidably connected inside the fixed ring. A red laser emitter is fixed to the two sides of the fourth magnets away from each other through a supporting plate, and the red laser emitter cooperates with the scale on the annular box body to display the rotation angle of the valve disc on the outside of the tube body.

[0016] In a possible design, an annular sealing plate is sealingly and slidably connected in an annular liquid bin, a plurality of one-way valves are fixedly passed through the annular sealing plate, a plurality of liquid outlet pipes are arranged on a side of the annular liquid bin close to the tube body, and the plurality of liquid outlet pipes are communicated with the tube body, a plurality of liquid inlet pipes are arranged at the bottom of the annular liquid bin, and the plurality of liquid inlet pipes are communicated with the tube body, a plurality of sliding rods are fixed at the bottom of the annular sealing plate, the bottom ends of the plurality of sliding rods all seal and slide through the bottom of the annular liquid bin and are all fixedly connected to the top of the lifting ring, a first variable frequency motor is fixed at the top of the annular box body, and the first variable frequency motor is fixed at the top of the annular box body. A reciprocating screw is fixed to the output shaft of a variable frequency motor, and the top thread of the reciprocating screw penetrates the lifting ring and is rotatably connected to the bottom of the annular liquid bin, and the rotation of the reciprocating screw is used to drive the lifting ring to move back and forth up and down; the output shaft of the first variable frequency motor drives the reciprocating screw to rotate, and the reciprocating screw drives the annular sealing plate to move back and forth up and down through the lifting ring and the sliding rod. Under the action of the one-way valve, the water in the pipe body flows back into the pipe body through the liquid inlet pipe, the annular liquid bin and the liquid outlet pipe, thereby ensuring that the water in the pipe body is in a circulating state, avoiding the water in the pipe body from being stationary and freezing in winter.

[0017] In a possible design, a rotating chamber is arranged in the valve plate, a rotating shaft rotates and passes through the valve plate, and a valve disc rotates in the rotating chamber, and the cooperation between the valve port and the valve disc is used to control the size of the flow rate, a sealing box is fixed at the bottom of the valve plate, the bottom end of the rotating shaft extends into the sealing box and is rotatably connected to the bottom inner wall of the sealing box, a second variable frequency motor is fixed to one side of the tube body through a frame, a screw is fixed to the output shaft of the second variable frequency motor through a coupling, one end of the screw extends into the tube body in a sealed rotation and is rotatably connected to the inner wall of one side of the sealing box, a dial plate is fixedly sleeved on the outer wall of the rotating shaft, a toggle block is slidably fitted in the dial plate, and the toggle block is threadedly connected to the screw, and the movement of the toggle block can drive the dial plate and the rotating shaft to rotate; the second variable frequency motor drives the screw to rotate, and the screw drives the toggle block to move, and the toggle block drives the rotating shaft to rotate through the cooperation of the sliding column and the sliding groove, and the rotating shaft drives the valve disc to rotate in the rotating chamber, thereby controlling the size of the valve port opening and the size of the flow rate.

[0018] In a possible design, two third magnets are arranged above the valve plate, the two third magnets are respectively fixed at two ends of the first scraper, the first scraper is fixedly sleeved on the outer wall of the rotating shaft, the fixing ring is fixedly sleeved on the outer wall of the tube body, the fixing ring is located in the annular box body, the outer wall of the fixing ring is provided with an annular groove, two fourth magnets are slidably connected in the annular groove, the two fourth magnets are respectively magnetically matched with the two third magnets, the two bearing plates are respectively fixed on the side away from each other of the two fourth magnets, and the two red laser emitting heads are respectively fixed on the side away from each other of the two bearing plates; the rotating shaft can drive the first scraper and the third magnet to rotate, the magnetic attraction between the third magnet and the fourth magnet drives the bearing plate and the red laser emitting head to rotate, the red laser emitted by the red laser emitting head just irradiates on the transparent acrylic plate, the angle of rotation of the valve disc can be clearly observed through the scale on the transparent acrylic plate and the laser emitted by the red laser emitting head, so that the opening size of the valve port can be clearly determined, and in addition, when the rotating shaft drives the valve disc and the first scraper to rotate, the first scraper can scrape off the dirt attached to the top of the valve plate to prevent the dirt from affecting the drainage of the valve port.

[0019] In a possible design, a transparent acrylic plate is fixedly embedded in the outer wall of the annular box body, and a scale is set on the outer wall of the transparent acrylic plate to make the red laser emitted by the red laser emitter clearly displayed on the outer wall of the transparent acrylic plate.

[0020] In a possible design, the outer wall of the circular ring is provided with a plurality of notches, and a second magnet is fixed in each of the plurality of notches; a plurality of first magnets are fixed on the inner wall of the lifting ring, and a magnetic attraction is generated between the first magnet and the second magnet; a cross rod is fixed in the circular ring; the lifting ring drives the circular ring and the cross rod to move up and down through the cooperation of the first magnet and the second magnet, and the circular ring and the cross rod further stir the water in the tube body to prevent the water from being in a static state; at the same time, during the synchronous up and down movement of the lifting ring and the circular ring, the water in the tube body just flows through the notches between the adjacent first magnet and the second magnet; the water located between the two magnets may become more active due to the effect of the magnetic field on the water molecules, making it more difficult to form the skeleton structure of ice, and the magnetic field may make the condensed droplets smaller in size and more evenly distributed, and prolong the freezing time of the water droplets (the water located between the two magnets is less likely to freeze than the water without the effect of the magnetic field), thereby further preventing the static water in the tube body from freezing.

[0021] In a possible design, a guide rod is fixed between the bottom of the annular liquid bin and the top of the annular box body, and the lifting ring is slidably sleeved on the outer surface of the guide rod; the guide rod can increase the stability of the lifting ring moving up and down.

[0022] In a possible design, the top inner wall and the bottom inner wall of the paddle plate are both provided with sliding grooves, the top and the bottom of the paddle block are both rotatably connected with sliding columns, and the two sliding columns are respectively slidably matched with the corresponding sliding grooves; when the screw drives the paddle block to move, the screw can drive the paddle plate and the rotating shaft to rotate through the cooperation of the sliding column and the sliding groove, thereby controlling the size of the valve opening and displaying the rotation angle on the transparent acrylic plate.

[0023] In a possible design, a movable groove is provided at the bottom of the first scraper, and two second scrapers are slidably connected in the movable groove, and the bottom ends of the second scrapers extend into the valve port and touch the top of the valve disc, and tension springs are fixed on the sides of the two second scrapers that are away from each other, and the ends of the two tension springs that are away from each other are respectively fixedly connected to the inner walls of one side of the corresponding movable groove, and the tension springs can make the second scrapers close to the inner wall of the valve port; when the first scraper rotates, the second scraper closes to the inner wall of the valve port under the tension of the tension spring, so as to remove dirt attached to the inside of the valve port and prevent the dirt from affecting the cross-sectional area of ​​the valve port.

[0024] In the present application, a method for using an automatic flow control device based on frequency conversion technology comprises the following steps:

[0025] S1, the pipe body and the flow meter are connected to the pipeline by bolts to ensure that the liquid flows through the flow meter; the rotation of the valve disc is achieved by the second variable frequency motor driving the screw and the toggle block, thereby adjusting the size of the valve port to control the flow; the flow meter records the flow data through the pipe body in real time;

[0026] S2. Through the rotation of the rotating shaft, the valve disc and the first scraper rotate synchronously; the red laser emission head rotates with the third magnet, and the laser emitted by it is projected on the transparent acrylic plate, which is convenient for observing the rotation angle of the valve disc, so as to clarify the opening state of the valve port;

[0027] S3. During the rotation of the valve disc and the first scraper, not only the flow rate is controlled, but also the dirt on the valve disc and the inner wall of the valve port can be automatically scraped off to ensure the unobstructed flow of the valve port;

[0028] S4. When the valve disc closes the valve port, the water in the pipe body enters a circulation state; the first variable frequency motor drives the reciprocating screw to move the annular sealing plate up and down in the pipe body, cooperating with the one-way valve and the annular liquid tank to ensure the circulation of water; at the same time, the ring and the cross rod stir the water under the action of the magnetic field, reducing the time for the water to stand still, thereby reducing the risk of water freezing; the water located between the two magnets becomes more active due to the action of the magnetic field, further enhancing the anti-freezing effect.

[0029] Beneficial Effects

[0030] In the present invention, a plurality of one-way valves are fixedly passed through the annular sealing plate, a plurality of liquid outlet pipes connected to the tube body are provided on the side of the annular liquid bin close to the tube body, a plurality of liquid inlet pipes connected to the tube body are provided at the bottom of the annular liquid bin, a lifting ring is fixed to the bottom of the annular sealing plate through a plurality of sliding rods, and a reciprocating screw rod threadedly passing through the lifting ring is fixed to the output shaft of the first variable frequency motor; the reciprocating screw rod drives the annular sealing plate to move up and down reciprocatingly through the lifting ring and the sliding rod, and the water in the tube body flows back into the tube body through the liquid inlet pipe, the annular liquid bin and the liquid outlet pipe under the action of the one-way valve, thereby ensuring that the water in the tube body is in a circulating state, and preventing the water in the tube body from being stationary and freezing in winter;

[0031] In the present invention, the outer wall of the circular ring is provided with a plurality of notches, and the second magnets are fixed in the plurality of notches; the inner wall of the lifting ring is fixed with a plurality of first magnets, and magnetic attraction is generated between the first magnets and the second magnets; the circular ring and the cross rod move up and down to stir the water in the tube body to prevent the water from being in a static state; at the same time, the water between the two magnets can prolong the freezing time of water droplets due to the effect of the magnetic field on water molecules, thereby further preventing the static water in the tube body from freezing;

[0032] In the present invention, the valve disc fixing sleeve is arranged on the outer wall of the rotating shaft, the valve plate is provided with a valve port, one end of the screw is rotatably connected to the inner wall of one side of the sealing box, the outer wall fixing sleeve of the rotating shaft is provided with a dial plate, a dial block is slidably fitted in the dial plate, and the dial block is threadedly connected to the screw; the second variable frequency motor drives the screw to rotate, the screw drives the dial block to move, the dial block drives the rotating shaft to rotate through the cooperation of the sliding column and the sliding groove, and the rotating shaft drives the valve disc to rotate in the rotating chamber, thereby being able to control the size of the valve port opening and the size of the flow rate.

[0033] In the present invention, the two third magnets are respectively fixed at the two ends of the first scraper, the outer wall of the tube body is fixedly sleeved with a fixing ring, and the outer wall of the fixing ring is slidably connected with two red laser emitting heads through an annular groove, a fourth magnet and a supporting plate; the magnetic attraction between the third magnet and the fourth magnet drives the red laser emitting head to rotate, and the red laser emitted by the red laser emitting head just irradiates the transparent acrylic plate, and the rotation angle of the valve disc can be clearly observed through the scale on the transparent acrylic plate and the laser emitted by the red laser emitting head, so that the opening size of the valve port can be clearly determined, and in addition, when the rotating shaft drives the valve disc and the first scraper to rotate, the first scraper can scrape off the dirt attached to the top of the valve plate to prevent the dirt from affecting the drainage of the valve port.

[0034] In the present invention, the opening size of the valve port can be controlled by the rotation of the rotating shaft and the valve flap, thereby controlling the flow rate. When the rotating shaft rotates, not only the rotation angle of the valve flap can be clearly determined, but also the dirt on the top of the valve plate and the inner wall of the valve port can be scraped off by the first scraper and the second scraper. In addition, the up and down reciprocating movement of the annular sealing plate and the lifting ring can make the water in the pipe body circulate, thereby preventing the stagnant water from freezing in the pipe body in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the three-dimensional structure of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0036] Figure 2 A schematic diagram of the main cross-sectional structure of a pipe body of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0037] Figure 3 A partial three-dimensional cross-sectional structural schematic diagram of a pipe body and an annular liquid bin of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0038] Figure 4 A schematic diagram of the three-dimensional structure of the cooperation between the lifting ring and the circular ring of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0039] Figure 5A schematic diagram of a three-dimensional exploded structure of an annular sealing plate, a one-way valve and a sliding rod of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0040] Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of an annular box body and a fixed ring of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0041] Figure 7 A schematic diagram of a three-dimensional exploded structure of a fixing ring, a bearing plate and a first scraper of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0042] Figure 8 A schematic diagram of a three-dimensional exploded cross-sectional structure of a valve plate and a valve flap of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0043] Fig. 9 A schematic diagram of a three-dimensional exploded structure of a rotating shaft and a sealing box of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0044] Fig.10 A schematic diagram of a three-dimensional exploded structure of a paddle and a paddle block of an automatic flow control device based on frequency conversion technology provided in Example 1 of the present invention;

[0045] Fig.11 This is a schematic diagram of the main cross-sectional structure of a valve plate and a first scraper of an automatic flow control device based on frequency conversion technology provided in Example 2 of the present invention.

[0046] In the figure: 1, pipe body; 2, flow meter; 3, valve plate; 4, valve disc; 5, annular liquid bin; 6, liquid outlet pipe; 7, liquid inlet pipe; 8, lifting ring; 9, annular sealing plate; 10, one-way valve; 11, sliding rod; 12, reciprocating screw rod; 13, first variable frequency motor; 14, first magnet; 15, ring; 16, notch; 17, second magnet; 18, cross rod; 19, rotating chamber; 20, rotating shaft; 21, valve port; 22, seal Sealing box; 23. dial plate; 24. toggle block; 25. sliding column; 26. sliding groove; 27. screw; 28. second frequency conversion motor; 29. ​​annular box body; 30. transparent acrylic plate; 31. fixing ring; 32. first scraper; 33. third magnet; 34. bearing plate; 35. fourth magnet; 36. red laser emitting head; 37. guide rod; 38. annular groove; 39. movable groove; 40. second scraper; 41. tension spring. DETAILED DESCRIPTION

[0047] 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 the embodiments.

[0048] Example 1

[0049] Reference Figure 1-Figure 10 A control device is used in the field of flow control, comprising a pipe body 1, a flow meter 2 is fixed to the bottom of the pipe body 1 by bolts, and a pipe is fixed to the ends of the pipe body 1 and the flow meter 2 away from each other by bolts;

[0050] It also includes a valve plate 3 fixed in the pipe body 1, a valve flap 4 is arranged in the valve plate 3, and the valve plate 3 and the valve flap 4 cooperate to control the flow rate, an annular box body 29 is fixed to the outer wall of the pipe body 1, and a scale is arranged on the outer side of the annular box body 29, and a first scraper 32 is rotatably connected to the top of the valve plate 3, and the first scraper 32 cooperates with the annular box body 29 to clearly display the rotation angle of the valve flap 4;

[0051] It also includes a lifting ring 8, a circular ring 15 and an annular liquid bin 5, and the lifting ring 8 is sleeved on the outer wall of the tube body 1, the annular liquid bin 5 is fixedly sleeved on the outer wall of the tube body 1, and the annular liquid bin 5 is located above the lifting ring 8, the circular ring 15 is slidably set in the tube body 1, and the cooperation between the lifting ring 8 and the annular liquid bin 5 can circulate the static water in the tube body 1.

[0052] Reference Figure 2-Figure 5The device also includes a circulation structure arranged in the annular liquid bin 5, which is used to keep the water in the pipe body 1 in a circulating flow state to prevent the water from being stagnant and freezing; the circulation structure includes an annular sealing plate 9 that is sealingly and slidably connected to the annular liquid bin 5, and a plurality of one-way valves 10 are fixedly penetrated in the annular sealing plate 9. A plurality of liquid outlet pipes 6 connected to the pipe body 1 are provided on the side of the annular liquid bin 5 close to the pipe body 1, and a plurality of liquid inlet pipes 7 connected to the pipe body 1 are provided at the bottom of the annular liquid bin 5, and the top of the liquid inlet pipe 7 slides through the lifting ring 8. The annular sealing plate 9 moves up and down to drive the liquid in the pipe body 1 to flow through the liquid inlet pipe 7, the annular liquid bin 5 and the liquid outlet pipe 6 to flow back into the pipe body 1. A plurality of sliding rods 11 are fixed at the bottom of the annular sealing plate 9, and the bottom ends of the plurality of sliding rods 11 are sealed and slidable and penetrate the annular liquid bin 5. The bottom is fixedly connected to the top of the lifting ring 8, and a first variable frequency motor 13 is fixed to the top of the annular box body 29. The output shaft of the first variable frequency motor 13 is fixed with a reciprocating screw 12, and the top thread of the reciprocating screw 12 penetrates the lifting ring 8 and is rotatably connected to the bottom of the annular liquid bin 5. The rotation of the reciprocating screw 12 is used to drive the lifting ring 8 to reciprocate up and down; the output shaft of the first variable frequency motor 13 drives the reciprocating screw 12 to rotate, and the reciprocating screw 12 drives the annular sealing plate 9 to reciprocate up and down through the lifting ring 8 and the sliding rod 11. Under the action of the one-way valve 10, the water in the tube body 1 flows back into the tube body 1 through the liquid inlet pipe 7, the annular liquid bin 5 and the liquid outlet pipe 6, thereby ensuring that the water in the tube body 1 is in a circulating state, avoiding the water in the tube body 1 from being stationary and freezing in winter.

[0053] Reference Figure 3-Figure 4 , the outer wall of the circular ring 15 is provided with a plurality of notches 16, and the plurality of notches 16 are all fixed with second magnets 17, the inner wall of the lifting ring 8 is fixed with a plurality of first magnets 14, and magnetic attraction is generated between the first magnets 14 and the second magnets 17, and a cross bar 18 is fixed in the circular ring 15; the lifting ring 8 drives the circular ring 15 and the cross bar 18 to move up and down through the cooperation of the first magnet 14 and the second magnet 17, and the circular ring 15 and the cross bar 18 further stir the water in the tube body 1 to prevent the water from being in a static state. At the same time, during the synchronous up and down movement of the lifting ring 8 and the circular ring 15, the water in the tube body 1 just flows through the notches 16 and between the adjacent first magnets 14 and the second magnet 17; the water located between the two magnets may become more active due to the effect of the magnetic field on the water molecules, making it more difficult to form the skeleton structure of ice, and the magnetic field may make the condensed droplets smaller in size and more evenly distributed, and prolong the freezing time of the water droplets (the water located between the two magnets is less likely to freeze than the water without the effect of the magnetic field), thereby further preventing the static water in the tube body 1 from freezing.

[0054] Reference Figure 2 and Figure 3A guide rod 37 is fixed between the bottom of the annular liquid bin 5 and the top of the annular box body 29, and the lifting ring 8 is slidably sleeved on the outer surface of the guide rod 37; the guide rod 37 can increase the stability of the lifting ring 8 moving up and down.

[0055] Reference Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 The device also includes a control structure arranged in the valve plate 3, which is used to control the rotation angle of the valve disc 4; the control structure includes a rotation chamber 19 arranged in the valve plate 3, a rotating shaft 20 is rotated through the valve plate 3, the valve disc 4 is fixedly sleeved on the outer wall of the rotating shaft 20, and the valve disc 4 rotates in the rotation chamber 19, a valve port 21 is arranged in the valve plate 3, and the valve port 21 cooperates with the valve disc 4 to control the flow rate, a sealing box 22 is fixed at the bottom of the valve plate 3, the bottom end of the rotating shaft 20 extends into the sealing box 22 and is rotatably connected to the bottom inner wall of the sealing box 22, and a second variable frequency motor 28 is fixed to one side of the pipe body 1 through a frame, and the output shaft of the second variable frequency motor 28 is fixed by a coupling There is a screw 27, one end of which is sealed and rotated to extend into the tube body 1 and is rotatably connected to the inner wall of one side of the sealing box 22. A dial plate 23 is fixedly sleeved on the outer wall of the rotating shaft 20. A toggle block 24 is slidably fitted in the dial plate 23, and the toggle block 24 is threadedly connected to the screw 27. The movement of the toggle block 24 can drive the dial plate 23 and the rotating shaft 20 to rotate; the second frequency conversion motor 28 drives the screw 27 to rotate, and the screw 27 drives the toggle block 24 to move. The toggle block 24 drives the rotating shaft 20 to rotate through the cooperation of the sliding column 25 and the sliding groove 26. The rotating shaft 20 drives the valve disc 4 to rotate in the rotating chamber 19, thereby being able to control the size of the valve port 21 opening and the size of the flow rate.

[0056] Reference Figure 7-10 The top inner wall and the bottom inner wall of the dial plate 23 are both provided with sliding grooves 26, and the top and the bottom of the dial block 24 are rotatably connected with sliding columns 25, and the two sliding columns 25 are respectively slidably matched with the corresponding sliding grooves 26; when the screw 27 drives the dial block 24 to move, the screw 27 can drive the dial plate 23 and the rotating shaft 20 to rotate through the cooperation of the sliding column 25 and the sliding groove 26, so as to control the size of the opening of the valve port 21 and display the rotation angle on the transparent acrylic plate 30.

[0057] Reference Figure 6 and Figure 7The device also includes a display structure arranged above the valve plate 3, which is used to display the rotation angle of the valve disc 4 on the outside of the tube body 1; the display structure includes two third magnets 33 arranged above the valve plate 3, the two third magnets 33 are respectively fixed at both ends of the first scraper 32, the first scraper 32 is fixedly sleeved on the outer wall of the rotating shaft 20, the outer wall of the tube body 1 is fixedly sleeved with a fixing ring 31, the fixing ring 31 is located in the annular box body 29, the outer wall of the fixing ring 31 is provided with an annular groove 38, and two fourth magnets 35 are slidably connected in the annular groove 38, the two fourth magnets 35 are respectively magnetically matched with the two third magnets 33, and the two fourth magnets 35 are fixed with a supporting plate 34 on the side away from each other, and the two supporting plates 34 are fixed with a red laser on the side away from each other. The red laser emitting head 36 matches the scale on the annular box body 29; the rotating shaft 20 can drive the first scraper 32 and the third magnet 33 to rotate, and the magnetic attraction between the third magnet 33 and the fourth magnet 35 drives the supporting plate 34 and the red laser emitting head 36 to rotate. The red laser emitted by the red laser emitting head 36 just irradiates the transparent acrylic plate 30. The rotation angle of the valve flap 4 can be clearly observed through the scale on the transparent acrylic plate 30 and the laser emitted by the red laser emitting head 36, so that the opening size of the valve port 21 can be clearly determined. In addition, when the rotating shaft 20 drives the valve flap 4 and the first scraper 32 to rotate, the first scraper 32 can scrape off the dirt attached to the top of the valve plate 3 to prevent the dirt from affecting the drainage of the valve port 21.

[0058] Reference Figure 6 A transparent acrylic plate 30 is fixedly embedded on the outer wall of the annular box body 29 , and a scale is set on the outer wall of the transparent acrylic plate 30 , so that the red laser emitted by the red laser emitting head 36 is clearly displayed on the outer wall of the transparent acrylic plate 30 .

[0059] Example 2

[0060] refer to Fig.11 , an improvement on the basis of Example 1: a movable groove 39 is provided at the bottom of the first scraper 32, and two second scrapers 40 are slidably connected in the movable groove 39, and the bottom ends of the second scrapers 40 extend into the valve port 21 and touch the top of the valve disc 4, and tension springs 41 are fixed on the sides of the two second scrapers 40 that are away from each other, and the ends of the two tension springs 41 that are away from each other are respectively fixedly connected to the inner walls of one side of the corresponding movable groove 39, and the tension springs 41 can make the second scrapers 40 close to the inner wall of the valve port 21; when the first scraper 32 rotates, the second scraper 40 is close to the inner wall of the valve port 21 under the tension of the tension spring 41, so as to remove the dirt attached to the inside of the valve port 21 and prevent the dirt from affecting the cross-sectional area of ​​the valve port 21.

[0061] A method for using an automatic flow control device based on frequency conversion technology comprises the following steps:

[0062] The ends of S1, the tube body 1 and the flow meter 2 that are away from each other are connected to corresponding pipes by bolts, and the liquid flows through the tube body 1 and the flow meter 2. The size of the opening of the valve port 21 is controlled by the rotation of the valve disc 4 to control the size of the flow, and the flow meter 2 can monitor the flow through the tube body 1 in real time.

[0063] S2. When the size of the valve opening 21 needs to be controlled, the second variable frequency motor 28 drives the screw 27 to rotate, and the screw 27 drives the toggle block 24 to move. The toggle block 24 drives the rotating shaft 20 to rotate through the cooperation of the sliding column 25 and the sliding groove 26. The rotating shaft 20 drives the valve flap 4 to rotate in the rotating chamber 19, thereby controlling the size of the valve opening 21. The rotating shaft 20 can also drive the first scraper 32 and the third magnet 33 to rotate. The magnetic attraction between the third magnet 33 and the fourth magnet 35 drives the carrier plate 34 and the red laser emitting head 36 to rotate. The red laser emitted by the red laser emitting head 36 just irradiates the transparent acrylic plate 30. The rotation angle of the valve flap 4 can be clearly observed through the scale on the transparent acrylic plate 30 and the laser emitted by the red laser emitting head 36, so that the opening size of the valve opening 21 can be clearly determined.

[0064] S3. In addition, when the rotating shaft 20 drives the valve disc 4 and the first scraper 32 to rotate, the first scraper 32 can scrape off the dirt attached to the top of the valve plate 3 to prevent the dirt from affecting the drainage of the valve port 21. At the same time, when the first scraper 32 rotates, the second scraper 40 is tightly attached to the inner wall of the valve port 21 under the tension of the tension spring 41, so as to remove the dirt attached to the inside of the valve port 21 to prevent the dirt from affecting the cross-sectional area of ​​the valve port 21.

[0065] S4, when the valve disc 4 closes the valve port 21, the water in the pipe body 1 is stationary, and the output shaft of the first variable frequency motor 13 drives the reciprocating screw 12 to rotate, and the reciprocating screw 12 drives the annular sealing plate 9 to move up and down through the lifting ring 8 and the sliding rod 11. Under the action of the one-way valve 10, the water in the pipe body 1 flows back into the pipe body 1 through the liquid inlet pipe 7, the annular liquid tank 5 and the liquid outlet pipe 6, thereby ensuring that the water in the pipe body 1 is in a circulating state, and preventing the water in the pipe body 1 from being stationary and freezing in winter; in addition, when the lifting ring 8 moves up and down, the magnetic attraction between the first magnet 14 and the second magnet 17 drives the circular ring 15 and the cross rod 18 to move up and down synchronously, and the circular ring 15 and the cross rod 18 further stir the water in the tube body 1 to prevent the water from being in a static state. At the same time, during the synchronous up and down movement of the lifting ring 8 and the circular ring 15, the water in the tube body 1 just flows through the gap 16 and passes between the adjacent first magnet 14 and second magnet 17; the water between the two magnets may become more active due to the effect of the magnetic field on water molecules, making it more difficult to form the skeleton structure of ice, and the magnetic field may make the condensed droplets smaller and more evenly distributed, and prolong the freezing time of the water droplets (the water between the two magnets is less likely to freeze than the water without the effect of the magnetic field), thereby further preventing the static water in the tube body 1 from freezing.

[0066] However, as is well known to those skilled in the art, the working principles and wiring methods of the second variable frequency motor 28, the red laser emission head 36 and the first variable frequency motor 13 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0067] 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic flow control device based on frequency conversion technology, characterized in that: It comprises a pipe body (1), a flow meter (2) being fixed to the bottom of the pipe body (1) by means of bolts, and a pipeline being fixed to the ends of the pipe body (1) and the flow meter (2) which are away from each other by means of bolts; It also comprises a valve plate (3) fixed in the tube body (1), a valve flap (4) being provided in the valve plate (3), and the valve plate (3) and the valve flap (4) are used in cooperation to control flow, an annular box body (29) is fixed to the outer wall of the tube body (1), a scale is provided on the outer side of the annular box body (29), a first scraper (32) is rotatably connected to the top of the valve plate (3), and the first scraper (32) cooperates with the annular box body (29) to clearly display the rotation angle of the valve flap (4); It also comprises a lifting ring (8), a circular ring (15) and an annular liquid bin (5), wherein the lifting ring (8) is sleeved on the outer wall of the tube body (1), the annular liquid bin (5) is fixedly sleeved on the outer wall of the tube body (1), and the annular liquid bin (5) is located above the lifting ring (8), the circular ring (15) is slidably arranged in the tube body (1), and the cooperation between the lifting ring (8) and the annular liquid bin (5) can cause static water in the tube body (1) to circulate; A circulation structure is arranged in the annular liquid bin (5), the circulation structure comprising a liquid outlet pipe (6), a liquid inlet pipe (7) and an annular sealing plate (9) having a plurality of one-way valves (10), the top end of the liquid inlet pipe (7) slidingly penetrates the lifting ring (8), and the annular sealing plate (9) moves up and down to drive the liquid in the pipe body (1) to flow through the liquid inlet pipe (7), the annular liquid bin (5) and the liquid outlet pipe (6) and flow back into the pipe body (1), so as to keep the water in the pipe body (1) in a circulating flow state to prevent the water from being stagnant and freezing; A control structure is arranged in the valve plate (3), the control structure comprising a rotating chamber (19) and a rotating shaft (20), the valve flap (4) is fixedly sleeved on the outer wall of the rotating shaft (20), a valve port (21) is arranged in the valve plate (3), and the valve port (21) cooperates with the valve flap (4) to control the rotation angle of the valve flap (4); A display structure is arranged above the valve plate (3), the display structure comprising a fixing ring (31) and two third magnets (33), two fourth magnets (35) are slidably connected inside the fixing ring (31), a red laser emitting head (36) is fixed to the two fourth magnets (35) on the sides away from each other via a bearing plate (34), and the red laser emitting head (36) cooperates with the scale on the annular box body (29) to display the rotation angle of the valve flap (4) on the outside of the tube body (1); A rotating chamber (19) is arranged in the valve plate (3), a rotating shaft (20) rotates and penetrates the valve plate (3), a valve flap (4) rotates in the rotating chamber (19), the valve port (21) cooperates with the valve flap (4) to control the size of the flow rate, a sealing box (22) is fixed at the bottom of the valve plate (3), the bottom end of the rotating shaft (20) extends into the sealing box (22) and is rotatably connected to the bottom inner wall of the sealing box (22), a second variable frequency motor (28) is fixed to one side of the tube body (1) through a frame, The output shaft of the second variable frequency motor (28) is fixed with a screw rod (27) via a coupling, one end of the screw rod (27) is sealed and rotatably extended into the tube body (1) and is rotatably connected to an inner wall of a sealing box (22), the outer wall of the rotating shaft (20) is fixedly sleeved with a dial plate (23), a dial block (24) is slidably fitted in the dial plate (23), and the dial block (24) is threadedly connected to the screw rod (27), and the movement of the dial block (24) can drive the dial plate (23) and the rotating shaft (20) to rotate; Two third magnets (33) are arranged above the valve plate (3), the two third magnets (33) are respectively fixed at two ends of the first scraper (32), the first scraper (32) is fixedly sleeved on the outer wall of the rotating shaft (20), a fixing ring (31) is fixedly sleeved on the outer wall of the tube body (1), the fixing ring (31) is located in the annular box body (29), an annular groove (38) is provided on the outer wall of the fixing ring (31), two fourth magnets (35) are slidably connected in the annular groove (38), the two fourth magnets (35) are respectively magnetically matched with the two third magnets (33), two supporting plates (34) are respectively fixed on the side of the two fourth magnets (35) away from each other, and two red laser emission heads (36) are respectively fixed on the side of the two supporting plates (34) away from each other; A transparent acrylic plate (30) is fixedly embedded in the outer wall of the annular box body (29), and a scale is provided on the outer wall of the transparent acrylic plate (30) so as to enable the red laser emitted by the red laser emitting head (36) to be clearly displayed on the outer wall of the transparent acrylic plate (30).

2. The automatic flow control device based on frequency conversion technology according to claim 1 is characterized in that: An annular sealing plate (9) is sealingly and slidably connected in the annular liquid bin (5); a plurality of one-way valves (10) are fixedly connected and penetrate the annular sealing plate (9); a plurality of liquid outlet pipes (6) are arranged on a side of the annular liquid bin (5) close to the tube body (1), and the plurality of liquid outlet pipes (6) are connected to the tube body (1); a plurality of liquid inlet pipes (7) are arranged at the bottom of the annular liquid bin (5), and the plurality of liquid inlet pipes (7) are connected to the tube body (1); a plurality of sliding rods (11) are fixedly connected to the bottom of the annular sealing plate (9); and a plurality of The bottom ends of the slide rods (11) are sealed and slidably penetrate the bottom of the annular liquid bin (5) and are fixedly connected to the top of the lifting ring (8). A first variable frequency motor (13) is fixed to the top of the annular box body (29). A reciprocating screw (12) is fixed to the output shaft of the first variable frequency motor (13). The top thread of the reciprocating screw (12) penetrates the lifting ring (8) and is rotatably connected to the bottom of the annular liquid bin (5). The rotation of the reciprocating screw (12) is used to drive the lifting ring (8) to move reciprocatingly up and down.

3. The automatic flow control device based on frequency conversion technology according to claim 2 is characterized in that: The outer wall of the circular ring (15) is provided with a plurality of notches (16), and a second magnet (17) is fixed in each of the plurality of notches (16). The inner wall of the lifting ring (8) is fixed with a plurality of first magnets (14), and magnetic attraction is generated between the first magnets (14) and the second magnets (17). A cross rod (18) is fixed in the circular ring (15).

4. The automatic flow control device based on frequency conversion technology according to claim 3 is characterized in that: A guide rod (37) is fixed between the bottom of the annular liquid bin (5) and the top of the annular box body (29), and the lifting ring (8) is slidably sleeved on the outer surface of the guide rod (37).

5. The automatic flow control device based on frequency conversion technology according to claim 4 is characterized in that: The top inner wall and the bottom inner wall of the shift plate (23) are both provided with sliding grooves (26), the top and the bottom of the shift block (24) are both rotatably connected with sliding columns (25), and the two sliding columns (25) are respectively slidably matched with the corresponding sliding grooves (26).

6. The automatic flow control device based on frequency conversion technology according to claim 5 is characterized in that: A movable groove (39) is provided at the bottom of the first scraper (32), and two second scrapers (40) are slidably connected in the movable groove (39), and the bottom ends of the second scrapers (40) extend into the valve port (21) and contact the top of the valve flap (4), and tension springs (41) are fixed on the sides of the two second scrapers (40) that are away from each other, and the ends of the two tension springs (41) that are away from each other are respectively fixedly connected to the inner wall of one side of the corresponding movable groove (39), so that the second scrapers (40) can be closely attached to the inner wall of the valve port (21) through the tension springs (41).

7. A method for using an automatic flow control device based on frequency conversion technology according to claim 6, characterized in that: The following steps are involved: S1, the pipe body (1) and the flow meter (2) are connected to the pipeline by bolts to ensure that the liquid flows through the flow meter (2). The rotation of the valve disc (4) is achieved by the second variable frequency motor (28) driving the screw rod (27) and the toggle block (24), thereby adjusting the size of the valve port (21) to control the flow rate; the flow meter (2) records the flow data passing through the pipe body (1) in real time; S2. The valve flap (4) and the first scraper (32) rotate synchronously through the rotation of the rotating shaft (20); the red laser emitting head (36) rotates along with the third magnet (33), and the laser light emitted by the red laser emitting head (36) is projected onto the transparent acrylic plate (30), so as to facilitate observation of the rotation angle of the valve flap (4), thereby clarifying the opening state of the valve port (21); S3, during the rotation of the valve disc (4) and the first scraper (32), not only the flow rate is controlled, but also dirt on the inner wall of the valve plate (3) and the valve port (21) can be automatically scraped off, thereby ensuring that the valve port (21) is unobstructed; S4. When the valve disc (4) closes the valve port (21), the water in the pipe body (1) enters a circulating state. The first variable frequency motor (13) drives the reciprocating screw (12) to move the annular sealing plate (9) up and down in the pipe body (1), and cooperates with the one-way valve (10) and the annular liquid tank (5) to ensure the circulation of water. At the same time, the ring (15) and the cross rod (18) stir the water under the action of the magnetic field, thereby reducing the time that the water remains stationary, thereby reducing the risk of water freezing.

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