Multifunctional electromagnetic flowmeter

Abstract

The invention discloses a multifunctional electromagnetic flow meter, and relates to the technical field of electromagnetic flow meters, the multifunctional electromagnetic flow meter comprises a flow meter pipe body, a liquid inlet pipe and a liquid outlet pipe are fixedly arranged at the left end and the right end of the flow meter pipe body respectively, a flow guide cylinder is fixedly arranged at the right end of the liquid inlet pipe, and a flow guide assembly is arranged in the flow guide cylinder; a cooling assembly is arranged in the flowmeter pipe body; the flow guide assembly comprises a rotating shaft rod rotationally arranged on the inner wall of the flow guide cylinder. The flow guide assembly is arranged, after fluid enters the liquid inlet pipe, the flow guide blades can be pushed to drive the rotating shaft rod to rotate, the flow guide blades can comb the fluid, unstable flowing states such as vortexes and turbulent flows in the fluid are broken through, and the fluid enters the flow meter pipe body in a more stable and uniform state. The rotating shaft rod can drive the rotating blades to rotate at the same time, when the circulating conveying pipe conveys the cooling liquid into the transfer box and impacts the rotating blades, circulating flowing of the cooling liquid is achieved, and meanwhile the flow field can be continuously optimized.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic flowmeter technology, specifically to a multifunctional electromagnetic flowmeter. Background Technology

[0002] In fields such as industrial production, municipal water supply, and environmental monitoring, electromagnetic flowmeters have become one of the core devices for fluid flow measurement due to their advantages such as no mechanical wear, wide measurement range, and insensitivity to fluid viscosity.

[0003] For example, patent document CN115717915A discloses a highly efficient dustproof electromagnetic flowmeter. While the electromagnetic flowmeter proposed in this patent document improves its dustproof effect by adding a dustproof structure, it does not solve the measurement error problem caused by turbulent flow field inside the flowmeter. Furthermore, some existing electromagnetic flowmeters with heat dissipation mechanisms rely on manual replenishment of coolant, resulting in low automation and limited applicability under complex operating conditions.

[0004] To address the problems existing in current electromagnetic flowmeters, we designed a multifunctional electromagnetic flowmeter. Summary of the Invention

[0005] The purpose of this invention is to provide a multifunctional electromagnetic flowmeter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional electromagnetic flowmeter, comprising a flowmeter tube body, wherein an inlet pipe and an outlet pipe are fixedly provided at the left and right ends of the flowmeter tube body respectively, a flow guide tube is fixedly provided at the right end of the inlet pipe, a flow guide component is provided inside the flow guide tube, and a cooling component is provided inside the flowmeter tube body;

[0007] The flow guiding assembly includes a rotating shaft rotatably disposed on the inner wall of the flow guiding cylinder. Several flow guiding blades are evenly distributed on the surface of the rotating shaft. The flow guiding assembly also includes a transfer box fixedly connected to the bottom of the flow guiding cylinder. The transfer box is located directly below the rotating shaft, and the bottom end of the rotating shaft extends into the interior of the transfer box. Several rotating blades are fixedly connected to the bottom surface of the rotating shaft.

[0008] The cooling assembly includes an annular guide shell fixedly connected to the side of the flow meter tube body, and an annular cooling cavity opened inside the flow meter tube body. Several coolant flow holes are opened on the side of the flow meter tube body.

[0009] Preferably, a coolant inlet pipe and a coolant outlet pipe are fixedly embedded on the surface of the annular guide shell. A fluid guide hose is fixedly connected to the inlet end of the coolant inlet pipe. A drain sleeve is fixedly embedded on the left side of the transfer box. The end of the fluid guide hose away from the coolant inlet pipe extends into the interior of the drain sleeve. A one-way valve plate is rotatably installed inside the drain sleeve. An outlet hole is opened on the surface of the transfer box. The size of the one-way valve plate matches the outlet hole.

[0010] Preferably, the output end of the coolant output pipe is fixedly connected to a circulation conveying pipe, the end of the circulation conveying pipe away from the coolant output pipe extends into the interior of the transfer box, and the outlet of the circulation conveying pipe corresponds to the position of the rotating blade.

[0011] Preferably, an installation pipe is fixedly connected to the right end of the guide tube, and a coolant self-replenishing mechanism is fixedly provided on the lower surface of the installation pipe. The coolant self-replenishing mechanism includes a coolant cylinder fixedly connected to the bottom of the installation pipe and a limiting bracket fixedly connected to the inner wall of the installation pipe. A double-stroke memory metal spring is fixedly connected to the lower surface of the limiting bracket. A movable disc is fixedly connected to the bottom end of the double-stroke memory metal spring. A movable push rod is fixedly connected to the lower surface of the movable disc. The bottom end of the movable push rod extends into the interior of the coolant cylinder and is fixedly connected to a piston block. The piston block is slidably connected to the inner wall of the coolant cylinder.

[0012] Preferably, a coolant supply pipe is fixedly embedded on the right side of the coolant cylinder, and a one-way inlet valve is fixedly provided on the surface of the coolant supply pipe. A coolant replenishment pipe is fixedly embedded on the left side of the coolant cylinder, and the end of the coolant replenishment pipe away from the coolant cylinder extends into the interior of the transfer box. A one-way outlet valve is fixedly connected to the surface of the coolant replenishment pipe.

[0013] Preferably, the inner wall of the mounting tube is provided with a limiting through hole that matches the movable push rod. The movable push rod is slidably connected to the inner wall of the limiting through hole. A leak-proof sealing sleeve is fixedly connected between the lower surface of the mounting tube and the top of the coolant cylinder. The movable push rod is located inside the leak-proof sealing sleeve.

[0014] Preferably, the plurality of coolant flow holes are evenly distributed in a circular pattern on the inner wall of the annular cooling cavity, and the positions of the coolant flow holes correspond to the annular guide shell, with one end of the coolant flow hole extending into the interior of the annular guide shell.

[0015] Preferably, a waste liquid discharge pipe is fixedly embedded on the left side of the flow meter tube, and an electromagnetic switch valve is fixedly connected to the surface of the waste liquid discharge pipe.

[0016] Preferably, an extension plate is fixedly connected to the left side of the flow meter tube body, and a pressure sensor is fixedly installed on the upper surface of the extension plate. The sensing end of the pressure sensor extends downward into the interior of the inlet pipe. The inlet pipe and the guide tube are fixedly connected by a flange. A temperature sensor is fixedly installed on the side of the flange, and the sensing end of the temperature sensor extends into the interior of the guide tube.

[0017] Preferably, a control box is fixedly installed on the top of the flow meter tube, and a multi-functional display screen is fixedly installed on the front of the control box.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] (1) By setting up a flow guiding component, after the fluid enters the inlet pipe, it will drive the flow guiding vanes to rotate the rotating shaft. The flow guiding vanes can sort the fluid, break the unstable flow state such as vortices and turbulence in the fluid, and make the fluid enter the flow meter tube in a more stable and uniform state. The rotating shaft can also drive the rotating vanes to rotate. When the circulating delivery pipe delivers the coolant to the transfer box and impacts the rotating vanes, the coolant circulates and continuously optimizes the flow field.

[0020] (2) By opening the annular cooling chamber inside the flow meter tube, the coolant enters the annular guide shell from the coolant inlet pipe and then enters the annular cooling chamber evenly through multiple coolant flow holes, forming a comprehensive cooling area around the inside of the tube. This can quickly absorb the heat generated by the flow meter tube during operation and improve the service life of the flow meter.

[0021] (3) By setting up an automatic coolant replenishment mechanism, the temperature-sensing automatic expansion and contraction characteristics of the double-stroke memory metal spring are utilized. When the fluid temperature is too high, the double-stroke memory metal spring will undergo corresponding expansion and contraction deformation, which will drive the movable disc, movable push rod and piston block to move in the coolant cylinder. Then, the coolant in the coolant cylinder is automatically replenished to the transfer box through the coolant replenishment pipe, ensuring that the coolant in the circulation system is always at a low temperature, without the need for frequent manual monitoring and operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a front view structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the rear view structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the front section structure of the present invention;

[0026] Figure 5This is a partial cross-sectional view of the present invention;

[0027] Figure 6 This is a side view of the mounting tube structure of the present invention;

[0028] Figure 7 for Figure 5 Enlarged structural diagram at point A;

[0029] Figure 8 for Figure 5 A magnified structural diagram at point B in the middle.

[0030] In the diagram: 1. Flow meter body; 2. Inlet pipe; 3. Outlet pipe; 4. Flow guide tube; 5. Flow guide assembly; 6. Cooling assembly; 7. Mounting pipe; 8. Coolant self-replenishing mechanism; 9. Waste liquid discharge pipe; 10. Solenoid valve; 11. Pressure sensor; 12. Flange; 13. Temperature sensor; 14. Control box; 15. Multifunctional display screen;

[0031] 501. Rotating shaft; 502. Guide vane; 503. Transfer box; 504. Rotating vane; 505. Drainage sleeve; 506. Check valve plate;

[0032] 601. Annular guide shell; 602. Annular cooling chamber; 603. Coolant flow hole; 604. Coolant inlet pipe; 605. Coolant outlet pipe; 606. Coolant guide hose; 607. Circulation delivery pipe;

[0033] 801. Coolant reservoir; 802. Limiting bracket; 803. Two-way memory metal spring; 804. Movable disc; 805. Movable push rod; 806. Piston block; 807. Coolant supply pipe; 808. One-way inlet valve; 809. Coolant replenishment pipe; 810. One-way outlet valve; 811. Leak-proof sealing sleeve. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-8 The present invention provides a technical solution: a multifunctional electromagnetic flowmeter, including a flowmeter tube body 1, with an inlet pipe 2 and an outlet pipe 3 fixedly installed at the left and right ends respectively. The inlet pipe 2 is used to receive the fluid to be measured, and the outlet pipe 3 is used to discharge the fluid after the measurement is completed.

[0036] At the right end of the inlet pipe 2, a flange 12 is used to fix it to the guide tube 4. The temperature sensor 13 is fixedly installed on the side of the flange 12, and its sensing end extends directly into the interior of the guide tube 4, which can monitor the temperature data of the fluid in the guide tube 4 in real time.

[0037] An extension plate is fixedly connected to the left side of the flowmeter tube body 1. A pressure sensor 11 is fixedly installed on the upper surface of the extension plate. The sensing end of the pressure sensor 11 penetrates downward through the extension plate and extends into the interior of the inlet pipe 2, enabling it to capture pressure changes in the fluid within the inlet pipe 2 and promptly report any abnormal fluid pressure. Simultaneously, a waste liquid discharge pipe 9 is also fixedly embedded on the left side of the flowmeter tube body 1. An electromagnetic switch valve 10 is connected in series on the surface of the waste liquid discharge pipe 9. The electromagnetic switch valve 10 is electrically connected to the control box 14, allowing operators to control the opening and closing of the electromagnetic switch valve 10 via the control box 14, facilitating the discharge of residual waste liquid or impurities from the device and reducing maintenance difficulty.

[0038] A control box 14 is fixedly installed on the top of the flow meter tube body 1. The control box 14 integrates a data processing module, a control module and a power supply module. A multi-functional display screen 15 is fixedly installed on its front. The multi-functional display screen 15 communicates with the pressure sensor 11 and the temperature sensor 13, and can intuitively display key parameters such as the temperature, pressure and flow rate of the fluid.

[0039] The flow guiding assembly 5 is integrated inside and at the bottom of the flow guiding cylinder 4, including a rotating shaft 501. The rotating shaft 501 is rotatably mounted at the center of the inner wall of the flow guiding cylinder 4 via bearings, and its axis coincides with the axis of the flow guiding cylinder 4, ensuring that the rotating shaft 501 can uniformly act on the fluid inside the flow guiding cylinder 4 when it rotates. On the surface of the rotating shaft 501, a number of flow guiding blades 502 are evenly distributed along the circumferential direction, and the flow guiding blades 502 are vertically fixed to the rotating shaft 501.

[0040] When the fluid enters the guide tube 4 from the inlet pipe 2, it impacts the guide vanes 502 and drives the rotating shaft 501 to rotate around its own axis. During this process, the guide vanes 502 can sort the fluid, break the unstable flow state such as vortices and turbulence that may exist in the fluid, and make the fluid enter the flow meter tube 1 in a stable and uniform laminar flow state, thereby improving the accuracy and reliability of the measurement data.

[0041] The transfer box 503 is fixedly connected to the bottom of the guide tube 4 and located directly below the rotating shaft 501. It has a hollow box-like structure with a through hole at the top that matches the rotating shaft 501. The bottom end of the rotating shaft 501 extends through the through hole into the interior of the transfer box 503. Several rotating blades 504 are fixedly connected to the bottom surface of the rotating shaft 501 inside the transfer box 503. The rotating blades 504 are also fixed vertically to the rotating shaft 501, and the blades face the outlet of the circulation conveying pipe 607.

[0042] A drain sleeve 505 is fixedly embedded on the left side wall of the transfer box 503. The axis of the drain sleeve 505 is horizontally set, with one end communicating with the interior of the transfer box 503 and the other end extending to the outside of the guide tube 4 for connecting to the liquid guiding hose 606. Inside the drain sleeve 505, a one-way valve plate 506 is rotatably set by a pin. A liquid outlet hole is opened on the wall at the connection between the transfer box 503 and the drain sleeve 505. The size of the one-way valve plate 506 is perfectly matched with the liquid outlet hole, and the one-way valve plate 506 can only rotate outward from the drain sleeve 505.

[0043] When the coolant pressure inside the transfer box 503 reaches the set threshold, the one-way valve plate 506 is opened, and the coolant can enter the drain sleeve 505 through the outlet hole and then flow into the guide hose 606; when the pressure inside the transfer box 503 decreases, the one-way valve plate 506 resets under its own weight and external pressure, blocking the outlet hole and preventing the coolant from flowing back into the transfer box 503.

[0044] The cooling assembly 6 is used to dissipate heat and cool the flowmeter tube body 1 and the internal fluid. It includes an annular guide shell 601, which has a circular structure and is fixedly sleeved on the middle of the side of the flowmeter tube body 1, forming a closed annular channel between the annular guide shell 601 and the flowmeter tube body 1. Inside the flowmeter tube body 1, an annular cooling cavity 602 is formed at the position corresponding to the annular guide shell 601.

[0045] On the side of the flowmeter tube body 1, a plurality of coolant flow holes 603 are evenly distributed along the circumference. One end of each coolant flow hole 603 extends through the side wall of the flowmeter tube body 1 into the interior of the annular guide shell 601, and the other end extends into the interior of the annular cooling chamber 602. Coolant can flow evenly from the annular guide shell 601 into the annular cooling chamber 602, forming a surrounding cooling area inside the flowmeter tube body 1. This allows the coolant to fully cover the inner wall of the flowmeter tube body 1, quickly absorbing the heat of the tube body and the internal fluid, avoiding local overheating, and significantly improving the heat dissipation efficiency of the device.

[0046] On the surface of the annular guide shell 601, a coolant inlet pipe 604 and a coolant outlet pipe 605 are symmetrically fixed and embedded. The inlet end of the coolant inlet pipe 604 is fixedly connected to the coolant guide hose 606 by a pipe clamp. The end of the coolant inlet pipe 604 passes through the outer port of the drain sleeve 505 and extends into the interior of the drain sleeve 505, forming a sliding seal with the drain sleeve 505 to ensure that the coolant discharged from the transfer box 503 can be stably delivered to the coolant inlet pipe 604 through the coolant guide hose 606.

[0047] The output end of the coolant output pipe 605 is fixedly connected to the circulation delivery pipe 607. The circulation delivery pipe 607 extends along the outer wall of the flow meter tube 1 to the bottom of the guide tube 4. The end of the circulation delivery pipe 607 away from the coolant output pipe 605 passes through the side wall of the transfer box 503 and extends into the interior of the transfer box 503. The outlet of the circulation delivery pipe 607 inside the transfer box 503 faces the rotating blade 504.

[0048] When the coolant is sprayed out from the outlet of the circulation delivery pipe 607, it directly impacts the rotating blades 504, providing additional rotational power to the rotating shaft 501 and enhancing the fluid-gathering effect of the guide vanes 502. This achieves coolant recycling, reducing coolant consumption costs and minimizing waste coolant emissions, thus meeting energy conservation and environmental protection requirements. Furthermore, the coolant impact drives the rotating shaft 501, linking the guide assembly 5 and the cooling assembly 6, thereby improving the overall continuity and stability of the device's operation.

[0049] The coolant self-replenishing mechanism 8 is used to automatically replenish low-temperature coolant when the coolant in the cooling circulation system is insufficient or the temperature is too high. It includes a coolant cylinder 801, which is fixedly connected to the lower surface of the mounting pipe 7 by welding. The coolant cylinder 801 has a cylindrical hollow structure, and its top is tightly fitted with the lower surface of the mounting pipe 7 to form a closed liquid storage space for storing spare low-temperature coolant.

[0050] A limiting bracket 802 is fixedly installed on the inner wall of the mounting tube 7, directly above the coolant cylinder 801. The edge of the limiting bracket 802 is welded and fixed to the inner wall of the mounting tube 7. The top end of the double-stroke memory metal spring 803 is fixedly connected to the center of the lower surface of the limiting bracket 802, and the bottom end extends vertically downward and is fixedly connected to the movable disc 804. The center of the lower surface of the movable disc 804 is fixedly connected to the movable push rod 805. A limiting through hole matching the diameter of the movable push rod 805 is opened on the lower surface of the mounting tube 7. The bottom end of the movable push rod 805 passes through the limiting through hole, extends into the interior of the coolant cylinder 801, and is fixedly connected to the piston block 806.

[0051] The piston block 806 has a circular structure and forms a sliding seal with the inner wall of the coolant cylinder 801, ensuring that the piston block 806 can perform liquid suction or discharge when sliding inside the coolant cylinder 801.

[0052] To prevent coolant leakage from the gap between the movable push rod 805 and the limiting through hole, a leak-proof sealing sleeve 811 is fixedly connected between the lower surface of the mounting pipe 7 and the top of the coolant cylinder 801. The leak-proof sealing sleeve 811 is made of a telescopic corrugated sealing material, which completely encloses the movable push rod 805 inside, so as not to affect the up and down sliding of the movable push rod 805, and effectively prevents the coolant from contacting the outside.

[0053] A coolant supply pipe 807 is fixedly embedded in the right wall of the coolant reservoir 801. One end of the coolant supply pipe 807 communicates with the interior of the coolant reservoir 801, and the other end can be connected to an external coolant storage tank for replenishing the coolant reservoir 801 with new low-temperature coolant. A one-way inlet valve 808 is fixedly installed on the surface of the coolant supply pipe 807. The one-way inlet valve 808 only allows external coolant to flow into the coolant reservoir 801 from the coolant supply pipe 807, preventing the coolant in the coolant reservoir 801 from flowing back out.

[0054] A coolant replenishment pipe 809 is fixedly embedded in the left side wall of the coolant reservoir 801. One end of the coolant replenishment pipe 809 communicates with the interior of the coolant reservoir 801, and the other end extends into the interior of the transfer box 503. It is used to transport the low-temperature coolant in the coolant reservoir 801 to the transfer box 503 to replenish the coolant consumed in the cooling circulation system. A one-way discharge valve 810 is fixedly installed on the surface of the coolant replenishment pipe 809. The one-way discharge valve 810 only allows the coolant in the coolant reservoir 801 to flow into the transfer box 503, preventing the coolant or fluid in the transfer box 503 from flowing back into the coolant reservoir 801.

[0055] The dual-path memory metal spring 803 is made of an alloy material with a dual-path memory effect and has the characteristic of automatically expanding and contracting according to temperature changes. When the temperature sensor 13 detects that the fluid temperature in the guide tube 4 is too high, the high temperature is transferred to the dual-path memory metal spring 803, causing the dual-path memory metal spring 803 to elongate and deform, pushing the movable plate 804 to move downward. The movable plate 804 drives the movable push rod 805 and the piston block 806 to slide downward in the coolant cylinder 801, compressing the space inside the coolant cylinder 801, increasing the internal coolant pressure, opening the one-way outlet valve 810, and flowing into the transfer box 503 through the coolant replenishment pipe 809, realizing the automatic replenishment of low-temperature coolant.

[0056] When the fluid temperature drops to the normal range, the double-stroke memory metal spring 803 resumes its contraction deformation, pulling the movable disc 804, movable push rod 805 and piston block 806 upward, creating a negative pressure in the coolant cylinder 801, opening the one-way inlet valve 808, and allowing external low-temperature coolant to enter the coolant cylinder 801 through the coolant supply pipe 807, completing the automatic replenishment and feeding of coolant.

[0057] Working principle: The fluid to be measured enters through the inlet pipe 2 and flows through the guide tube 4 connected by the flange 12, impacting the guide vanes 502 of the guide assembly 5, which drives the rotating shaft 501 to rotate, smoothing the fluid into a stable laminar flow before entering the flow meter tube 1. At the same time, the temperature sensor 13 measures the fluid temperature inside the guide tube 4, and the pressure sensor 11 on the left extension plate of the flow meter tube 1 measures the fluid pressure inside the inlet pipe 2. The data are processed by the control box 14 and displayed on the multi-function display screen 15.

[0058] When control box 14 determines that cooling is needed, the coolant in transfer box 503 pushes open the one-way valve plate 506, flows through the liquid guide hose 606 and coolant inlet pipe 604 into the annular guide shell 601, then flows through coolant flow hole 603 into annular cooling chamber 602 to absorb heat, and then returns to transfer box 503 through coolant outlet pipe 605 and circulation delivery pipe 607, impacting rotating blades 504 for auxiliary flow guidance. When the coolant overheats, the double-stroke memory metal spring 803 deforms to push piston block 806, replenishing coolant in coolant cylinder 801 into transfer box 503 through coolant replenishment pipe 809. The operator opens solenoid switch valve 10 through control box 14 to discharge waste liquid through waste liquid discharge pipe 9.

Claims

1. A multifunctional electromagnetic flowmeter, comprising a flowmeter tube body (1), characterized in that: The flow meter tube body (1) is fixedly provided with an inlet pipe (2) and an outlet pipe (3) at its left and right ends respectively. A flow guide tube (4) is fixedly provided at the right end of the inlet pipe (2). A flow guide component (5) is provided inside the flow guide tube (4). A cooling component (6) is provided inside the flow meter tube body (1). The flow guiding assembly (5) includes a rotating shaft (501) rotatably disposed on the inner wall of the flow guiding cylinder (4). A plurality of flow guiding blades (502) are evenly distributed on the surface of the rotating shaft (501). The flow guiding assembly (5) also includes a transfer box (503) fixedly connected to the bottom of the flow guiding cylinder (4). The transfer box (503) is located directly below the rotating shaft (501), and the bottom end of the rotating shaft (501) extends into the interior of the transfer box (503). A plurality of rotating blades (504) are fixedly connected to the bottom surface of the rotating shaft (501). The cooling assembly (6) includes an annular guide shell (601) fixedly connected to the side of the flow meter tube (1) and an annular cooling cavity (602) opened inside the flow meter tube (1). The side of the flow meter tube (1) is provided with a plurality of coolant flow holes (603).

2. The multifunctional electromagnetic flowmeter according to claim 1, characterized in that: The surface of the annular guide shell (601) is fixedly embedded with a coolant inlet pipe (604) and a coolant outlet pipe (605). The inlet end of the coolant inlet pipe (604) is fixedly connected with a liquid guide hose (606). The left side of the transfer box (503) is fixedly embedded with a drain sleeve (505). The end of the liquid guide hose (606) away from the coolant inlet pipe (604) extends into the interior of the drain sleeve (505). A one-way valve plate (506) is rotatably installed inside the drain sleeve (505). The surface of the transfer box (503) is provided with a liquid outlet hole. The size of the one-way valve plate (506) matches the size of the liquid outlet hole.

3. The multifunctional electromagnetic flowmeter according to claim 2, characterized in that: The output end of the coolant output pipe (605) is fixedly connected to a circulation conveying pipe (607). The end of the circulation conveying pipe (607) away from the coolant output pipe (605) extends into the interior of the transfer box (503), and the outlet of the circulation conveying pipe (607) corresponds to the position of the rotating blade (504).

4. The multifunctional electromagnetic flowmeter according to claim 3, characterized in that: The right end of the guide tube (4) is fixedly connected to the installation tube (7). The lower surface of the installation tube (7) is fixedly provided with a coolant self-replenishing mechanism (8). The coolant self-replenishing mechanism (8) includes a coolant cylinder (801) fixedly connected to the bottom of the installation tube (7) and a limiting bracket (802) fixedly connected to the inner wall of the installation tube (7). The lower surface of the limiting bracket (802) is fixedly connected to a double-stroke memory metal spring (803). The bottom end of the double-stroke memory metal spring (803) is fixedly connected to a movable disc (804). The lower surface of the movable disc (804) is fixedly connected to a movable push rod (805). The bottom end of the movable push rod (805) extends into the interior of the coolant cylinder (801) and is fixedly connected to a piston block (806). The piston block (806) is slidably connected to the inner wall of the coolant cylinder (801).

5. The multifunctional electromagnetic flowmeter according to claim 4, characterized in that: A coolant supply pipe (807) is fixedly embedded on the right side of the coolant cylinder (801), and a one-way inlet valve (808) is fixedly provided on the surface of the coolant supply pipe (807). A coolant replenishment pipe (809) is fixedly embedded on the left side of the coolant cylinder (801), and the end of the coolant replenishment pipe (809) away from the coolant cylinder (801) extends into the interior of the transfer box (503), and a one-way outlet valve (810) is fixedly connected to the surface of the coolant replenishment pipe (809).

6. The multifunctional electromagnetic flowmeter according to claim 5, characterized in that: The inner wall of the mounting tube (7) is provided with a limiting through hole that matches the movable push rod (805). The movable push rod (805) is slidably connected to the inner wall of the limiting through hole. A leak-proof sealing sleeve (811) is fixedly connected between the lower surface of the mounting tube (7) and the top of the coolant cylinder (801). The movable push rod (805) is located inside the leak-proof sealing sleeve (811).

7. The multifunctional electromagnetic flowmeter according to claim 6, characterized in that: The plurality of coolant flow holes (603) are evenly distributed in a ring on the inner wall of the annular cooling cavity (602), and the position of the coolant flow holes (603) corresponds to the annular guide shell (601). One end of the coolant flow holes (603) extends into the interior of the annular guide shell (601).

8. The multifunctional electromagnetic flowmeter according to claim 7, characterized in that: A waste liquid discharge pipe (9) is fixedly embedded on the left side of the flow meter tube body (1), and an electromagnetic switch valve (10) is fixedly connected to the surface of the waste liquid discharge pipe (9).

9. The multifunctional electromagnetic flowmeter according to claim 8, characterized in that: An extension plate is fixedly connected to the left side of the flow meter tube (1). A pressure sensor (11) is fixedly installed on the upper surface of the extension plate. The sensing end of the pressure sensor (11) extends downward to the inside of the inlet pipe (2). The inlet pipe (2) and the guide tube (4) are fixedly connected by a flange (12). A temperature sensor (13) is fixedly installed on the side of the flange (12). The sensing end of the temperature sensor (13) extends to the inside of the guide tube (4).

10. The multifunctional electromagnetic flowmeter according to claim 9, characterized in that: A control box (14) is fixedly installed on the top of the flow meter tube (1), and a multi-functional display screen (15) is fixedly installed on the front of the control box (14).

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