Non-return device with flow limiting function and working method thereof

Abstract

The invention discloses a non-return device with a flow limiting function and a working method of the non-return device, relates to the technical field of non-return devices, and aims to solve the problems that the interior of an existing non-return device is mainly of a single non-return structure, and the single non-return structure is extremely easy to damage after being used for a long time when media with high safety coefficients are conveyed, so that the non-return effect is poor. The problems that the sealing performance of the non-return structure is reduced, the follow-up non-return effect is affected, potential safety hazards are generated, and the flow of the non-return structure cannot be adjusted according to requirements are solved. Comprising a main valve body, valve body pipelines are integrally arranged at the two ends of the main valve body, second combined flanges are arranged at the ends of the valve body pipelines, and valve ports are formed in the second combined flanges; the valve further comprises a limiting block which is arranged in the valve body pipeline, a liquid inlet channel is formed in the middle of the limiting block, and a spherical clamping groove is formed in one end of the liquid inlet channel.

Description

Technical Field

[0001] The invention relates to the technical field of non-return devices, in particular to a non-return device with a flow limiting function and a working method thereof. Background Art

[0002] A check valve is a valve that has a circular disc as the opening and closing part and blocks the backflow of the medium by its own weight and the pressure of the medium. It is an automatic valve and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The disc movement modes are divided into lift type and swing type. The lift check valve is similar to the stop valve in structure, except that it lacks a valve stem to drive the disc. The medium enters the valve from the inlet (the swing check valve has a disc that is tilted and can rotate around the axis, and its working principle is similar to that of the lift check valve. Check valves are often used as bottom valves for pumping devices to prevent the backflow of water.

[0003] The existing check device mainly has a single check structure inside. When transporting some media with a higher safety factor, the single check structure is extremely easy to be damaged after long-term use, resulting in a decrease in the sealing performance of the check structure, affecting the subsequent check effect and creating safety hazards. In addition, the check structure cannot adjust the flow rate according to demand. For this reason, we provide a check device with a flow limiting function. Summary of the invention

[0004] The object of the present invention is to provide a non-return device with a flow limiting function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a check device with flow limiting function, comprising a main valve body, both ends of the main valve body are integrally provided with valve body pipelines, the end of the valve body pipeline is provided with a second combination flange, and the interior of the second combination flange is provided with a valve port;

[0006] Also includes:

[0007] A limit block is installed inside the valve body pipeline, a liquid inlet channel is opened in the middle of the limit block, a spherical slot is provided at one end of the liquid inlet channel, and the spherical slot is located on the outer wall of the limit block, an annular electromagnetic suction block is provided on the inner wall of the spherical slot, and the electromagnetic suction block is magnetically connected to the check ball, a pressure sensing block is provided on the outer ring of the electromagnetic suction block, and a rubber strip is provided on the outer ring of the pressure sensing block;

[0008] A check ball is installed inside the valve body pipeline, and the shape of the check ball matches that of the spherical slot. A mounting seat is installed above the check ball, and the mounting seat is fixed on the inner top wall of the valve body pipeline. A reset shaft is provided on the outer wall of the mounting seat. A driven bracket is installed between the reset shaft and the check ball, and the check ball rotates on the reset shaft through the driven bracket.

[0009] Preferably, a first controller is installed above the valve body pipeline, and the input end of the first controller is electrically connected to the output end of the first pressure sensing block, and the output end of the first controller is electrically connected to the control end of the electromagnetic suction block.

[0010] Preferably, an anti-collision pad is provided on the inner wall of the valve body pipeline.

[0011] Preferably, a connecting pipe is installed above the main valve body via a first combined flange, a control end is installed above the connecting pipe, and an assembly cover is installed above the control end via screws.

[0012] Preferably, both sides of the main valve body are provided with in-valve channels, and the in-valve channels are respectively connected with the valve body pipelines on both sides, a lifting channel is provided between the in-valve channels, and a flange opening is provided at the upper end of the lifting channel.

[0013] Preferably, an electric cylinder is installed inside the control end, and the electric cylinder includes a piston rod, and the lower end of the piston rod extends into the lifting channel.

[0014] Preferably, a lifting frame is installed at the lower end of the piston rod, a valve plate is installed at the lower end of the lifting frame, and the electric cylinder is transmission-connected to the valve plate through the piston rod.

[0015] Preferably, a pressure sensing groove matching the shape of the bottom of the valve plate is provided at the middle position of the bottom of the main valve body, a receiving transmitter is provided below the pressure sensing groove, and the pressure sensing groove is wirelessly connected to the second controller via the receiving transmitter.

[0016] Preferably, a second controller is installed on one side of the electric cylinder, and an input end of the second controller is wirelessly connected to the output end of the first controller and the receiving transmitter.

[0017] Preferably, a working method of a check device with a flow limiting function comprises the following steps:

[0018] Step 1: During the liquid delivery, the medium flows from the valve port to the liquid inlet channel. The first controller controls the electromagnetic suction block to deenergize it, and the medium thrust pushes the check ball. The reset shaft rotates under the thrust, driving the driven bracket and the check ball below to flip, so that the check ball is separated from the ball slot, the liquid inlet channel is opened, and the medium flows from the ball slot into the valve body pipeline;

[0019] Step 2: As the check ball is disengaged, the pressure at the pressure-sensitive block changes, and the feedback model is sent to the first controller, which records the pressure change, transmits a signal to the second controller, and the second controller summarizes the data and transmits the data back to the user terminal;

[0020] Step 3: The medium flows from the valve body pipeline into the valve channel of the main valve body and is blocked by the valve plate in the lifting channel. The electric cylinder is controlled to drive the valve plate to move upward through the piston rod so that the valve plate no longer blocks the valve channel. The medium flows outward along the connected valve channel to the other valve body pipeline, and the above-mentioned check ball non-return process is repeated to make the medium flow outward;

[0021] Step 4: In the non-return state, the electric cylinder drives the piston rod to move downward, pressing the valve plate down and fixing it in the pressure sensing groove to block the passage inside the valve;

[0022] Step 5: The reset shaft retracts and resets, driving the check ball to flip into the spherical slot. The first controller turns on the electromagnetic suction block to magnetically fix the check ball in the spherical slot, so that the main valve body and the valve body pipeline are closed and checked.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention can effectively improve the check effect by installing multiple check structures on the valve body. After the check structure is removed and damaged, the check operation can still be performed through other check structures; and the check structure can also adjust the sealing strength at various positions to limit the flow rate through the sealing strength; wherein, through the thrust of the medium and the setting of the reset shaft, the check ball is driven to perform a displacement check operation; in the liquid inlet state, the medium thrust pushes the check ball, so that the reset shaft rotates, driving the check ball to flip, opening the liquid inlet channel, and performing the liquid inlet operation; in the check state, the reset shaft rotates and resets, driving the check ball to displace and engage in the spherical slot, and fixes it by electromagnetic attraction, so that the spherical slot is closed, and the refluxed medium cannot effectively pass through the spherical slot, thereby achieving a check effect. On the basis of the check of the main valve body, a check structure is installed in the valve body pipeline, so that the valve body can have a multi-stage check structure, and does not affect the normal assembly combination with the medium pipeline, and occupies less space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 A perspective view of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of the valve body pipeline of the present invention;

[0028] Figure 4 It is a schematic diagram of the local structure of the limit block of the present invention;

[0029] Figure 5 It is a schematic diagram of the internal structure of the main valve body of the present invention;

[0030] In the figure: 1. main valve body; 2. valve body pipeline; 3. first combination flange; 4. connecting pipe; 5. control end; 6. assembly cover; 7. second combination flange; 8. valve port; 9. first controller; 10. liquid inlet channel; 11. limit block; 12. spherical card slot; 13. electromagnetic suction block; 14. pressure sensing block; 15. rubber strip; 16. check ball; 17. mounting seat; 18. reset shaft; 19. driven bracket; 20. anti-collision pad; 21. valve channel; 22. lifting channel; 23. valve plate; 24. pressure sensing slot; 25. receiving transmitter; 26. lifting frame; 27. electric cylinder; 28. piston rod; 29. ​​second controller; 30. flange mouth. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-5 The present invention provides an embodiment: a check device with a flow limiting function, comprising a main valve body 1, both ends of the main valve body 1 are integrally provided with a valve body pipeline 2, the end of the valve body pipeline 2 is provided with a second combination flange 7, and the interior of the second combination flange 7 is provided with a valve port 8;

[0033] Also includes:

[0034] A limit block 11 is installed inside the valve body pipeline 2. A liquid inlet channel 10 is opened in the middle of the limit block 11. A spherical groove 12 is provided at one end of the liquid inlet channel 10. The spherical groove 12 is located on the outer wall of the limit block 11. An annular electromagnetic suction block 13 is provided on the inner wall of the spherical groove 12. The electromagnetic suction block 13 is magnetically connected to the check ball 16. A pressure sensing block 14 is provided on the outer ring of the electromagnetic suction block 13. A rubber strip 15 is provided on the outer ring of the pressure sensing block 14.

[0035] A check ball 16 is installed inside the valve body pipeline 2, and the shape of the check ball 16 matches that of the spherical slot 12. A mounting seat 17 is installed above the check ball 16, and the mounting seat 17 is fixed on the inner top wall of the valve body pipeline 2. A reset shaft 18 is provided on the outer wall of the mounting seat 17. A driven bracket 19 is installed between the reset shaft 18 and the check ball 16, and the check ball 16 rotates on the reset shaft 18 through the driven bracket 19;

[0036] A first controller 9 is installed above the valve body pipeline 2 , and an input end of the first controller 9 is electrically connected to an output end of the first pressure sensing block 14 , and an output end of the first controller 9 is electrically connected to a control end of the electromagnetic suction block 13 .

[0037] Through the thrust of the medium and the setting of the reset shaft 18, the check ball 16 is driven to perform a displacement check operation; in the liquid inlet state, the thrust of the medium pushes the check ball 16, causing the reset shaft 18 to rotate, driving the check ball 16 to flip, opening the liquid inlet channel 10, and performing the liquid inlet operation;

[0038] In the non-return state, the reset shaft 18 rotates and resets, driving the non-return ball 16 to move and engage in the spherical slot 12, and fixes it by electromagnetic attraction, so that the spherical slot 12 is closed, and the refluxed medium cannot effectively pass through the spherical slot 12, achieving a non-return effect;

[0039] On the basis of the check function of the main valve body 1, a check structure is installed in the valve body pipeline 2, so that the valve body can have a multi-stage check structure without affecting the normal assembly combination with the medium pipeline and occupying less space.

[0040] By controlling the current intensity at the electromagnetic suction block 13, the magnetic suction force there is adjusted, and different medium thrusts are responded to according to the magnitude of the magnetic suction force; the greater the current intensity, the greater the magnetic suction force, the stronger the connection between the check ball 16 and the spherical slot 12, and the more difficult it is to separate; the smaller the current intensity, the smaller the magnetic suction force, making the check ball 16 easier to be pushed by the medium.

[0041] Each time the check ball 16 performs a separation operation, a pressure change occurs at the pressure sensing block 14. The first controller 9 receives and records the signal, and can obtain data such as the number of changes and time, which is convenient for user management. In order to prevent the pressure sensing block 14 from being accidentally triggered by water, the pressure range is adjusted in advance, and the recording operation is performed only when the pressure range is reached.

[0042] The rubber strip 15 is used to improve the sealing between the check ball 16 and the spherical groove 12, improve the check effect, and avoid medium leakage; the rubber strip 15 is also elastic. When the check ball 16 is reset to the spherical groove 12, the rubber strip 15 can reduce the impact force generated by the check ball 16 and reduce damage to the parts there.

[0043] See also Figure 3 , an anti-collision pad 20 is provided on the inner wall of the valve body pipeline 2;

[0044] When the impact force of the medium is too large, the check ball 16 is easy to hit the inner wall of the valve body pipeline 2 due to flipping, causing damage to the inner wall; through the provision of the anti-collision pad 20, the impact force of the check ball 16 on the inner wall can be reduced, and the check ball 16 can be blocked from the inner wall to prevent the check ball 16 from directly contacting the inner wall, and to prevent the inner wall from being damaged by collision with the check ball 16, thereby improving protection.

[0045] See also Figure 1A connecting pipe 4 is installed above the main valve body 1 through a first combined flange 3, a control end 5 is installed above the connecting pipe 4, and an assembly cover 6 is installed above the control end 5 through screws;

[0046] The control end 5 is used to assemble various components used by the main valve body 1, and the assembly cover 6 is detachable, which is convenient for users to inspect and replace internal components.

[0047] See also Figure 5 , both sides of the main valve body 1 are provided with valve inner passages 21, and the valve inner passages 21 are respectively connected with the valve body pipelines 2 on both sides, and a lifting passage 22 is provided between the valve inner passages 21, and a flange opening 30 is provided at the upper end of the lifting passage 22;

[0048] The valve inner channel 21 is used for medium circulation, and the lifting channel 22 is located in the middle of the valve inner channel 21. The valve plate 23 installed therein is used to move up and down at the lifting channel 22 to block and cut off the valve inner channel 21, thereby achieving a check effect.

[0049] See also Figure 5 The control end 5 is internally provided with an electric cylinder 27, the electric cylinder 27 includes a piston rod 28, and the lower end of the piston rod 28 extends into the lifting channel 22;

[0050] The lower end of the piston rod 28 is provided with a lifting frame 26, the lower end of the lifting frame 26 is provided with a valve plate 23, and the electric cylinder 27 is transmission-connected to the valve plate 23 via the piston rod 28;

[0051] The electric cylinder 27 drives the piston rod 28 to achieve telescopic movement. The lifting frame 26 is used to connect the valve plate 23 and the piston rod 28. When the piston rod 28 moves telescopically, it drives the valve plate 23 to achieve lifting and lowering movement.

[0052] In the rising state, the valve inner passage 21 is no longer completely closed, so that the medium can be transported;

[0053] In the descending state, the valve plate 23 blocks the valve inner passage 21, and the medium is blocked and cannot flow to the other end;

[0054] The flow rate of the medium can also be adjusted according to the lifting height.

[0055] See also Figure 5 A pressure sensing groove 24 matching the bottom shape of the valve plate 23 is provided at the middle position of the bottom of the main valve body 1, and a receiving transmitter 25 is provided below the pressure sensing groove 24, and the pressure sensing groove 24 is wirelessly connected to the second controller 29 through the receiving transmitter 25;

[0056] The pressure sensing groove 24 is used to detect the pressure change at this location. Every time the valve plate 23 rises, the pressure at this location changes once. The signal is fed back to the second controller 29 by the receiving transmitter 25 to record the number of opening and closing times and the opening and closing duration of the valve plate 23. The pressure range at the pressure sensing groove 24 is preset, and the pressure is recorded only after reaching the set pressure range to avoid accidental water pressure touch.

[0057] Through pressure feedback, users can be ensured to be aware of changes in the check structure and determine whether the check structure is in a check state based on the changes. In the event of medium leakage, users can know it at the first time and determine the location of the leaking check structure based on the pressure records at different check structures, thereby improving safety and facilitating users to quickly troubleshoot and repair.

[0058] See also Figure 5 A second controller 29 is installed on one side of the electric cylinder 27, and the input end of the second controller 29 is wirelessly connected to the output end of the first controller 9 and the receiving transmitter 25;

[0059] The second controller 29 is used to aggregate data and transmit the data to the user terminal or cloud platform for user reference.

[0060] See also Figure 1-5 , a working method of a check device with a flow limiting function, comprising the following steps:

[0061] Step 1: During the liquid inlet transportation, the medium flows from the valve port 8 to the liquid inlet channel 10, and the first controller 9 controls the electromagnetic suction block 13 to demagnetize it by power off. The medium thrust pushes the check ball 16, and the reset shaft 18 rotates under the thrust, driving the driven bracket 19 and the check ball 16 below to flip, so that the check ball 16 is separated from the ball slot 12, and the liquid inlet channel 10 is opened, and the medium flows from the ball slot 12 into the valve body pipeline 2;

[0062] Step 2: As the check ball 16 is disengaged, the pressure at the pressure sensing block 14 changes, and the feedback model is sent to the first controller 9, which records the pressure change, transmits a signal to the second controller 29, and the second controller 29 collects the data and transmits the data back to the user terminal;

[0063] Step 3: The medium flows from the valve body pipeline 2 into the valve inner channel 21 of the main valve body 1, and is blocked by the valve plate 23 in the lifting channel 22. The electric cylinder 27 is controlled to drive the valve plate 23 to move upward through the piston rod 28, so that the valve plate 23 no longer blocks the valve inner channel 21, and the medium flows outward along the connected valve inner channel 21 to the other valve body pipeline 2, and the above-mentioned non-return process of the non-return ball 16 is repeated to make the medium flow outward;

[0064] Step 4: In the non-return state, the electric cylinder 27 drives the piston rod 28 to move downward, pressing the valve plate 23 down and fixing it in the pressure sensing groove 24, blocking the valve channel 21;

[0065] Step 5: The reset shaft 18 retracts and resets, driving the check ball 16 to flip into the spherical slot 12, and the first controller 9 turns on the electromagnetic suction block 13 to magnetically fix the check ball 16 in the spherical slot 12, so that the main valve body 1 and the valve body pipeline 2 are closed and checked.

[0066] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A check device with a flow limiting function, comprising a main valve body (1), both ends of the main valve body (1) being integrally provided with valve body pipelines (2), the ends of the valve body pipeline (2) being provided with a second combined flange (7), the interior of the second combined flange (7) being provided with a valve port (8); Features: Also includes: A limit block (11) is installed inside the valve body pipeline (2); a liquid inlet channel (10) is provided at the middle position of the limit block (11); a spherical groove (12) is provided at one end of the liquid inlet channel (10); the spherical groove (12) is located on the outer wall of the limit block (11); an annular electromagnetic suction block (13) is provided on the inner wall of the spherical groove (12); the electromagnetic suction block (13) is magnetically connected to a check ball (16); a pressure sensing block (14) is provided on the outer ring of the electromagnetic suction block (13); and a rubber strip (15) is provided on the outer ring of the pressure sensing block (14); A check ball (16) is installed inside the valve body pipeline (2), and the shape of the check ball (16) matches that of the spherical slot (12). A mounting seat (17) is installed above the check ball (16), and the mounting seat (17) is fixed on the inner top wall of the valve body pipeline (2). A reset shaft (18) is provided on the outer wall of the mounting seat (17). A driven bracket (19) is installed between the reset shaft (18) and the check ball (16), and the check ball (16) rotates on the reset shaft (18) through the driven bracket (19).

2. A non-return device with flow limiting function according to claim 1, characterized in that: A first controller (9) is installed above the valve body pipeline (2), and the input end of the first controller (9) is electrically connected to the output end of the first pressure sensing block (14), and the output end of the first controller (9) is electrically connected to the control end of the electromagnetic suction block (13).

3. A non-return device with flow limiting function according to claim 2, characterized in that: An anti-collision cushion block (20) is arranged on the inner wall of the valve body pipeline (2).

4. A non-return device with flow limiting function according to claim 3, characterized in that: A connecting pipe (4) is installed above the main valve body (1) via a first combined flange (3), a control end (5) is installed above the connecting pipe (4), and an assembly cover (6) is installed above the control end (5) via screws.

5. A non-return device with flow limiting function according to claim 4, characterized in that: Both sides of the main valve body (1) are provided with in-valve channels (21), and the in-valve channels (21) are respectively connected to the valve body pipelines (2) on both sides. A lifting channel (22) is provided between the in-valve channels (21), and a flange opening (30) is provided at the upper end of the lifting channel (22).

6. A non-return device with flow limiting function according to claim 5, characterized in that: An electric cylinder (27) is installed inside the control end (5), and the electric cylinder (27) includes a piston rod (28), and the lower end of the piston rod (28) extends into the lifting channel (22).

7. A non-return device with flow limiting function according to claim 6, characterized in that: A lifting frame (26) is installed at the lower end of the piston rod (28), a valve plate (23) is installed at the lower end of the lifting frame (26), and the electric cylinder (27) is transmission-connected to the valve plate (23) via the piston rod (28).

8. A non-return device with flow limiting function according to claim 7, characterized in that: A pressure sensing groove (24) matching the shape of the bottom of the valve plate (23) is provided at the middle position of the bottom of the main valve body (1), a receiving transmitter (25) is provided below the pressure sensing groove (24), and the pressure sensing groove (24) is wirelessly connected to the second controller (29) via the receiving transmitter (25).

9. A non-return device with flow limiting function according to claim 8, characterized in that: A second controller (29) is installed on one side of the electric cylinder (27), and the input end of the second controller (29) is wirelessly connected to the output end of the first controller (9) and the receiving transmitter (25).

10. A method for operating a non-return device with a flow rate limiting function, implemented based on the non-return device with a flow rate limiting function according to claim 9, characterized in that: The following steps are involved: Step 1: During the liquid inlet transportation, the medium flows from the valve port (8) to the liquid inlet channel (10), the first controller (9) controls the electromagnetic suction block (13) to cut off the power and demagnetize it, the thrust of the medium pushes the check ball (16), the reset shaft (18) is affected by the thrust and rotates, driving the driven bracket (19) and the check ball (16) below to flip, so that the check ball (16) is separated from the ball groove (12), the liquid inlet channel (10) is opened, and the medium flows from the ball groove (12) into the valve body pipeline (2); Step 2: As the check ball (16) is disengaged, the pressure at the pressure sensing block (14) changes, and the feedback model is sent to the first controller (9). The first controller (9) records the pressure change, and the first controller (9) transmits a signal to the second controller (29). The second controller (29) collects the data and feeds the data transmission back to the user terminal; Step 3: The medium flows from the valve body pipeline (2) into the valve inner passage (21) of the main valve body (1), and is blocked by the valve plate (23) in the lifting passage (22). The electric cylinder (27) is controlled to drive the valve plate (23) to move upward through the piston rod (28), so that the valve plate (23) no longer blocks the valve inner passage (21). The medium flows outward along the connected valve inner passage (21) to the other valve body pipeline (2), and the above-mentioned non-return process of the non-return ball (16) is repeated, so that the medium flows outward; Step 4: In the non-return state, the electric cylinder (27) drives the piston rod (28) to move downward, pressing the valve plate (23) down and fixing it in the pressure sensing groove (24), thereby blocking the valve internal passage (21); Step 5: The reset shaft (18) retracts and resets, driving the check ball (16) to flip into the spherical slot (12). The first controller (9) turns on the electromagnetic suction block (13) to magnetically fix the check ball (16) in the spherical slot (12), so that the main valve body (1) and the valve body pipeline (2) are closed and checked.

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