Anti-interference electromagnetic flowmeter

Abstract

The utility model relates to the technical field of electromagnetic flow meters, and discloses an anti-interference electromagnetic flow meter which comprises a flow display meter, a connecting seat is arranged below the flow display meter, a quick-release assembly is arranged in the connecting seat, a measuring tube is fixedly connected to the lower surface of the connecting seat, first flanges are fixedly connected to the two ends of the measuring tube, and second flanges are fixedly connected to the two ends of the measuring tube. The two ends of the measuring tube are sleeved with connecting discs, and connecting assemblies are arranged in the connecting discs. The connecting assembly comprises a first positioning column and a second positioning column, one end of the second positioning column is fixedly connected with a pull ring, the pull ring is arranged in the connecting disc, one side of the first flange is provided with a second flange, the interior of the second flange is fixedly connected with a hollow pipe, and the outer wall of the hollow pipe is sleeved with a connecting ring. According to the anti-interference electromagnetic flowmeter, the first positioning column and the second positioning column are accurately matched with the first hole groove and the second hole groove, automatic alignment of the first flange and the second flange is achieved, it is guaranteed that the sealing gasket is evenly pressed, and the leakage risk is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic flowmeter technology, and in particular to an anti-interference electromagnetic flowmeter. Background Technology

[0002] Electromagnetic flowmeters, based on Faraday's law of electromagnetic induction, calculate flow rate by measuring the electromotive force generated when a conductive fluid cuts magnetic field lines. However, in complex industrial environments, equipment is often subjected to electromagnetic interference from frequency converters, high-power motors, and wireless communications, leading to signal distortion, decreased accuracy, or even failure of traditional electromagnetic flowmeters. Anti-interference electromagnetic flowmeters, through collaborative hardware and software design, significantly improve anti-interference capabilities, ensuring stable measurement even in high-noise environments. Their core applications include high-electromagnetic-interference workshops in industries such as metallurgy, chemicals, and power, for monitoring the flow rate of fluids such as cooling water and acid / alkali solutions; wastewater treatment plants and water supply networks; and pharmaceutical and food production.

[0003] Existing anti-interference electromagnetic flowmeters achieve their anti-interference effect through multi-dimensional structural design. They employ dual-frequency excitation coils and symmetrical electrode layouts, combined with highly insulating lining materials and an electromagnetic shielding layer inside the sensor. This is existing technology and will not be elaborated further here. Traditional flange connections rely on manual alignment and bolt fixing, which can easily lead to uneven stress on the sealing gaskets due to misalignment. After long-term operation, the connection is prone to loosening due to pipeline vibration or thermal expansion and contraction, affecting signal stability. Therefore, an anti-interference electromagnetic flowmeter with a novel connection method is needed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an anti-interference electromagnetic flowmeter, which aims to improve problems such as easy loosening at the connection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an anti-interference electromagnetic flowmeter, including a flow display meter, a connecting seat is provided below the flow display meter, a quick-release assembly is provided inside the connecting seat, a measuring tube is fixedly connected to the lower surface of the connecting seat, a flange is fixedly connected to both ends of the measuring tube, a connecting plate is sleeved on both ends of the measuring tube, and a connecting assembly is provided inside the connecting plate;

[0006] The connecting assembly includes a positioning post one, one end of which is fixedly connected to one side of the connecting plate. A positioning post two is slidably connected to one side of the connecting plate. A pull ring is fixedly connected to one end of the positioning post two and is disposed inside the connecting plate. A flange two is disposed on one side of flange one, and a hollow tube is fixedly connected inside flange two. A connecting ring is sleeved on the outer wall of the hollow tube.

[0007] Furthermore, the quick-release assembly includes a pin, one end of which is fixedly connected to the lower surface of the flow meter, and a locking block is slidably connected inside the connector.

[0008] Furthermore, a second spring is provided inside the connecting seat, and one end of the second spring is fixedly connected inside the locking block.

[0009] Furthermore, a slider is slidably connected inside the connecting seat, a pull rod is fixedly connected inside the slider, and a spring is sleeved on the outer wall of the pull rod.

[0010] Furthermore, a spring is provided inside the connecting disc, and the spring is fitted onto the outer wall of the pull ring.

[0011] Furthermore, a through-hole groove is provided inside the connecting ring, and a through-hole groove is provided inside the connecting ring.

[0012] Furthermore, the first positioning post is disposed inside the first flange, the first positioning post is disposed inside the second flange, and the first positioning post is disposed inside the first slot.

[0013] Furthermore, the second positioning post is disposed inside the first flange, the first positioning post is disposed inside the second flange, and the first positioning post is disposed inside the second slot.

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

[0015] In this utility model, the anti-interference electromagnetic flowmeter achieves automatic alignment of flange one and flange two through the precise cooperation of positioning column one and positioning column two with slot one and slot two, eliminating manual adjustment errors, ensuring uniform pressure on the sealing gasket, significantly reducing the risk of leakage, and the linkage design of spring one and pull ring provides elastic compensation, effectively absorbing displacement caused by pipeline vibration or thermal expansion and contraction, maintaining long-term stability at the connection, and reducing signal fluctuations.

[0016] In this invention, the anti-interference electromagnetic flowmeter uses a spring-driven locking mechanism with pins and locking blocks to achieve quick assembly and disassembly of the electromagnetic flowmeter and the connecting seat without the need for tools, greatly improving maintenance efficiency. The sliding cooperation between the slider and the pull rod, combined with the spring's triple reset function, simplifies the disassembly process and is suitable for operation in confined spaces. The modular design allows for partial replacement of damaged parts such as the measuring tube, avoiding complete scrapping and reducing maintenance costs. It is also compatible with various pipe diameters and operating conditions. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an anti-interference electromagnetic flowmeter proposed in this utility model;

[0018] Figure 2 This is a side view of the anti-interference electromagnetic flowmeter proposed in this utility model.

[0019] Figure 3This is a schematic diagram of the connection plate structure of an anti-interference electromagnetic flowmeter proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the measuring tube structure of an anti-interference electromagnetic flowmeter proposed in this utility model;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Flow display meter; 2. Connecting seat; 3. Measuring tube; 4. Flange 1; 5. Connecting plate; 6. Positioning pin 1; 7. Positioning pin 2; 8. Pull ring; 9. Spring 1; 10. Flange 2; 11. Hollow tube; 12. Connecting ring; 13. Groove 1; 14. Groove 2; 15. Pin; 16. Locking block; 17. Spring 2; 18. Sliding block; 19. Pull rod; 20. Spring 3. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1-3This utility model provides an embodiment of an anti-interference electromagnetic flowmeter, including a flow display meter 1, a connecting seat 2 below the flow display meter 1, a quick-release assembly inside the connecting seat 2, a measuring tube 3 fixedly connected to the lower surface of the connecting seat 2, flanges 4 fixedly connected to both ends of the measuring tube 3, and connecting discs 5 sleeved on both ends of the measuring tube 3. A connecting assembly is installed inside the connecting discs 5. The connecting assembly includes a positioning post 6, one end of which is fixedly connected to one side of the connecting disc 5. A second positioning post 7 is slidably connected to one side of the connecting disc 5, and a pull ring 8 is fixedly connected to one end of the second positioning post 7. The pull ring 8 is located inside the connecting disc 5. A second flange 10 is provided on one side of the flange 4, and a hollow tube 11 is fixedly connected inside the second flange 10. A connecting ring 12 is sleeved on the outer wall of the hollow tube 11. A spring 9 is installed inside the connecting disc 5 and sleeved on the outer wall of the pull ring 8. The elastic pressure of the pull ring 8 pushes the flange 4 and the second flange 10 to fit tightly together, while the absorption tube... To prevent displacement caused by vibration or thermal expansion and contraction, and to maintain long-term stability at the connection point and reduce signal fluctuations, the connecting ring 12 has a through-hole groove 13 and a through-hole groove 14. By inserting positioning pin 16 into the through-hole groove 13 of flange 14 and flange 20, and through the sliding fit between positioning pin 27 and through-hole groove 14, automatic and precise alignment of flange 14 and flange 20 is achieved, eliminating manual adjustment errors, ensuring uniform pressure on the sealing gasket, and significantly reducing the risk of leakage. Positioning pin 16 is located inside flange 14, flange 20, and through-hole groove 13. Positioning pin 27 is located inside flange 14, flange 20, and through-hole groove 14. The through-hole groove 13 is used to fix positioning pin 16, ensuring initial positioning stability. Through the elastic force of spring 9, through-hole groove 14 is pressed into positioning pin 27, achieving double locking and preventing accidental rotation of the connecting ring 12 that could cause loosening.

[0026] Reference Figures 1-5The quick-release assembly includes a pin 15, one end of which is fixedly connected to the lower surface of the flow display meter 1. A locking block 16 is slidably connected inside the connector 2. After the pin 15 is fixed to the lower surface of the flow display meter 1, the locking block 16 automatically locks the pin 15 under the drive of the second spring 17, achieving quick installation without tools. The connector 2 is equipped with a second spring 17, one end of which is fixedly connected to the inside of the locking block 16. A slider 18 is slidably connected inside the connector 2. A pull rod 19 is fixedly connected inside the slider 18. A third spring 20 is sleeved on the outer wall of the pull rod 19. During disassembly, pulling the pull rod 19 causes the slider 18 to slide, compressing the third spring 20 and releasing the locking block 16 from the pin 15, thus quickly separating the flow display meter 1 from the connector 2. This is suitable for maintenance work in narrow spaces. The second spring 17 ensures that the locking block 16 automatically resets after disassembly, facilitating the next installation. The third spring 20 drives the slider 18 to reset, simplifying the operation process.

[0027] Working principle: When using this anti-interference electromagnetic flowmeter, first connect the measuring tube 3 to the flange 10 through flange 4. Use the connecting components inside the connecting plate 5 to achieve quick installation. Insert the positioning pin 6 into the slot 13 of flange 4, flange 10 and connecting ring 12. At this time, the positioning pin 7 is pressed into the connecting plate 5. Rotate the connecting ring 12 to lock the positioning pin 6 in the slot 13. The positioning pin 7 is pressed into the slot 14 by the spring 9. The spring 9 applies elastic pressure through the pull ring 8 to push the flange to fit tightly. When disassembly is required, pull out the pull ring 8 to compress the spring 9 and retract the positioning pin 7 into the connecting plate 5. Then rotate the connecting ring 12 to release the positioning pin 6 and move the connecting plate 5 and connecting ring 12 to both sides to complete the disassembly.

[0028] When installing the flow display meter 1, simply insert the pin 15 into the groove of the connector 2. The pin 15 will automatically lock into the locking block 16. When disassembly is required, pull the lever 19 to move the slider 18 downwards, releasing the locking block 16 from the pin 15. This allows for quick separation of the flow display meter 1 from the connector 2 with one hand. Spring 2 17 automatically resets the locking block 16, and spring 3 20 automatically resets the slider 18.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-interference electromagnetic flowmeter, comprising a flow display meter (1), characterized in that: A connecting seat (2) is provided below the flow display meter (1). A quick-release assembly is provided inside the connecting seat (2). A measuring tube (3) is fixedly connected to the lower surface of the connecting seat (2). A flange (4) is fixedly connected to both ends of the measuring tube (3). A connecting plate (5) is sleeved on both ends of the measuring tube (3). A connecting assembly is provided inside the connecting plate (5). The connecting assembly includes a positioning post one (6), one end of which is fixedly connected to one side of the connecting plate (5). A positioning post two (7) is slidably connected to one side of the connecting plate (5). A pull ring (8) is fixedly connected to one end of the positioning post two (7). The pull ring (8) is located inside the connecting plate (5). A flange two (10) is provided on one side of the flange one (4). A hollow tube (11) is fixedly connected inside the flange two (10). A connecting ring (12) is sleeved on the outer wall of the hollow tube (11).

2. The anti-interference electromagnetic flowmeter according to claim 1, characterized in that: The quick-release assembly includes a pin (15), one end of which is fixedly connected to the lower surface of the flow display meter (1), and a locking block (16) is slidably connected inside the connector (2).

3. The anti-interference electromagnetic flowmeter according to claim 2, characterized in that: The connecting seat (2) is provided with a second spring (17), one end of which is fixedly connected to the inside of the locking block (16).

4. The anti-interference electromagnetic flowmeter according to claim 3, characterized in that: The connecting seat (2) has a slider (18) slidably connected inside, and a pull rod (19) is fixedly connected inside the slider (18). A spring (20) is sleeved on the outer wall of the pull rod (19).

5. The anti-interference electromagnetic flowmeter according to claim 1, characterized in that: The connecting disc (5) is provided with a spring (9), which is sleeved on the outer wall of the pull ring (8).

6. The anti-interference electromagnetic flowmeter according to claim 1, characterized in that: The connecting ring (12) has a through-hole groove one (13) and a through-hole groove two (14).

7. The anti-interference electromagnetic flowmeter according to claim 6, characterized in that: The first positioning post (6) is located inside the first flange (4), the first positioning post (6) is located inside the second flange (10), and the first positioning post (6) is located inside the first slot (13).

8. The anti-interference electromagnetic flowmeter according to claim 6, characterized in that: The second positioning post (7) is located inside the first flange (4), the first positioning post (6) is located inside the second flange (10), and the first positioning post (6) is located inside the second slot (14).

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