Raw water supply pipeline flow regulating device

Abstract

This utility model provides a raw water supply pipeline flow regulation device, belonging to the field of municipal engineering. It includes a flow pipeline equipped with a connecting flange. After the flow pipeline is installed via the connecting flange, an electromagnetic flowmeter monitors the water flow in real time. By detecting the induced electromotive force generated when a conductive liquid flows in a magnetic field, the flow velocity and flow rate of the liquid are indirectly calculated. Based on the detected flow rate, pressure, and other parameters, the device is compared with preset values, and then a control signal is sent to a servo motor. The servo motor controls the opening and closing of a sealing plate to control the water flow. Raw water supply pipelines require high flow accuracy. The device achieves micron-level flow regulation through an electromagnetic flowmeter, servo motor, and reciprocating screw, which is far superior to traditional manual regulation. It meets the needs of precise water distribution in different time periods and areas of raw water pipelines, reducing flow regulation errors.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering, and more specifically, to a raw water supply pipeline flow regulation device. Background Technology

[0002] A raw water supply pipeline flow regulating device is a device used to control the flow rate of raw water in the pipeline. Its purpose is to ensure that the raw water supply can meet the needs of different users and working conditions, while ensuring the stable and safe operation of the water supply system.

[0003] A search revealed that Chinese patent CN219472744U discloses a "pipeline flow regulating device," comprising a pipe body with a regulating pipe at one end. The regulating pipe has several connecting holes protruding outwards from its edge near the regulating pipe end. Several connecting rods are fixedly connected to the regulating pipe's protruding edge near the pipe body end, each rod threaded with a nut. A regulating chamber is fixedly connected to the top of the regulating pipe, with a through hole at the top of the chamber. An regulating rod is inserted into the through hole, and the bottom end of the regulating rod penetrates the top of the regulating pipe and is fixedly connected to a baffle located inside the regulating pipe. Several transmission rods are fixedly connected to the top of the regulating rod, and a transmission disc is fixedly connected to the end of each transmission rod. This invention is easy to install and disassemble for maintenance and replacement after prolonged use, and exhibits high stability, resisting shaking and deviation during flow regulation. However, it still has the following drawbacks:

[0004] (1) The flow rate of raw water pipeline is greatly affected by the start and stop of water pumps, peak and trough periods of water use, and fluctuations in pipeline pressure. Without closed-loop regulation, the flow rate will fluctuate drastically with external factors, causing the downstream treatment system to be unable to adapt to the fluctuations, resulting in a decrease in the efficiency of raw water treatment.

[0005] (2) Reciprocating screw drives have a certain degree of precision, but in actual operation, various factors, such as screw wear and transmission clearance, may cause deviations in the closing position of the sealing plate. To address this, a flow regulation device for raw water supply pipelines is proposed. Utility Model Content

[0006] The purpose of this invention is to address the problem that the flow rate of raw water pipelines is greatly affected by factors such as pump start-up and shutdown, peak and off-peak water usage, and pipeline pressure fluctuations. Without closed-loop regulation, the flow rate will fluctuate drastically with external factors, causing the downstream treatment system to be unable to adapt to the fluctuations and resulting in a decrease in raw water treatment efficiency.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] The present invention is as follows: a raw water supply pipeline flow regulating device, including a flow pipe with a connecting flange, an electromagnetic flow meter on the circumferential surface of the flow pipe, and a control device on the inner wall of the flow pipe. The control device includes a hollow tube fixedly installed on the inner wall of the flow pipe, and a mounting bracket fixedly installed on the circumferential surface of the hollow tube. A servo motor is fixedly mounted at the bottom of the mounting bracket, and a reciprocating screw is fixedly mounted at the output end of the servo motor. A sliding rod is threaded onto the circumferential surface of the reciprocating screw, and a sealing plate is fixedly mounted on one side of the bottom of the sliding rod. The reciprocating screw is driven to rotate by the output end of the servo motor, which in turn moves the sliding rod. When the sliding rod moves upward, it moves the sealing plate upward, causing the flow port to move upward, allowing water to flow out. When the sliding rod moves downward, it moves the sealing plate downward, causing the flow port to move downward and gradually blocking the water flow.

[0009] As a preferred technical solution of this utility model, the number of connecting flanges is set to two, and they are symmetrical to each other along the vertical central axis of the flow pipe. The electromagnetic flowmeter is electrically connected to the servo motor.

[0010] As a preferred technical solution of this utility model, the hollow tube is connected to the flow pipe, and the inner wall of the hollow tube is slidably installed on the other side of the sealing plate.

[0011] As a preferred technical solution of this utility model, the surface of the sealing plate is provided with a flow port, and the radius of the flow port is consistent with the radius of the inner wall of the flow pipe.

[0012] As a preferred technical solution of this utility model, the surface of the flow pipe is provided with an auxiliary device, the auxiliary device including a hollow cylinder, the hollow cylinder being fixedly installed on the inner wall of the hollow pipe, the number of the hollow cylinders being set to two, and being symmetrical to each other along the vertical central axis of the sealing plate.

[0013] As a preferred technical solution of this utility model, a limiting rod is slidably installed on the inner wall of the hollow cylinder. A triangular groove is formed on the surface of the sealing plate near the hollow cylinder. The surface of the limiting rod near the triangular groove is set as an arc surface. When the closed state, the limiting rod contacts the arc surface of the limiting rod through its triangular groove, causing the limiting rod to move along the inner wall of the hollow cylinder first and then compress the spring seat. When the limiting rod is at the center of the triangular groove, the spring seat resets and drives the limiting rod to insert into the triangular groove, so that the limiting rod is temporarily in the triangular groove, and the sealing plate is temporarily fixed by the elasticity of the spring seat.

[0014] As a preferred technical solution of this utility model, a guide rod is fixedly installed on the surface of the limiting rod away from the sealing plate, and a spring seat is provided between the limiting rod and the hollow cylinder. When the sealing plate moves normally, the inclined surface of the triangular groove contacts the arc surface of the limiting rod, so that the limiting rod is squeezed out of the triangular groove, allowing the sealing plate to move normally.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. Through the set control device, after the flow pipe is installed through the connecting flange, the water flow is monitored in real time by the electromagnetic flow meter. By detecting the induced electromotive force generated when the conductive liquid flows in the magnetic field, the flow velocity and flow rate of the liquid are indirectly calculated. Based on the detected flow rate, pressure and other parameters, the preset values ​​are compared, and then a control signal is sent to the servo motor. The servo motor controls the opening and closing of the sealing plate to control the flow of water. The raw water supply pipeline has high requirements for flow accuracy. The flow rate can be adjusted at the micron level by the electromagnetic flow meter, servo motor and reciprocating screw, which is far superior to the traditional manual adjustment. It is suitable for the needs of precise water distribution in the raw water pipeline by time period and area, and reduces the error of flow adjustment.

[0017] 2. Through the auxiliary device, when the sealing plate is opened and closed, the sealing plate is temporarily fixed by the limiting rod in the closed state. The reciprocating screw drive itself has a certain degree of accuracy, but in actual operation, various factors such as screw wear and transmission clearance may cause deviations in the closing position of the sealing plate. The temporary limiting can provide an accurate positioning when the sealing plate is closed, so that the sealing plate reaches the same position every time it closes, improving the accuracy of the sealing plate's closing position and thus ensuring the accuracy of flow control. When the sealing plate moves normally, the inclined surface of the triangular groove contacts the arc surface of the limiting rod, causing the limiting rod to be squeezed out of the triangular groove, allowing the sealing plate to move normally. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the raw water supply pipeline flow regulation device provided by this utility model;

[0019] Figure 2 A schematic diagram of the electromagnetic flowmeter and the flow pipe location of the raw water supply pipeline flow regulation device provided by this utility model.

[0020] Figure 3 A schematic diagram of the internal structure of the flow regulating device for raw water supply pipelines provided by this utility model;

[0021] Figure 4 A schematic diagram of the structure of the sealing plate and hollow pipe of the raw water supply pipeline flow regulation device provided by this utility model.

[0022] Figure 5 The raw water supply pipeline flow regulation device provided by this utility model Figure 4 Enlarged schematic diagram of part A in the middle.

[0023] The diagram shows: 1. Flow pipe; 2. Connecting flange; 3. Electromagnetic flow meter; 4. Control device; 40. Hollow tube; 41. Mounting bracket; 42. Servo motor; 43. Reciprocating screw; 44. Sliding rod; 45. Sealing plate; 46. Flow port; 5. Auxiliary device; 50. Hollow cylinder; 51. Limiting rod; 52. Triangular groove; 53. Guide rod; 54. Spring seat. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] like Figure 1 - Figure 4As shown, this embodiment proposes a raw water supply pipeline flow regulation device, including a flow pipeline 1, a connecting flange 2, an electromagnetic flow meter 3 on the circumferential surface of the flow pipeline 1, and a control device 4 on the inner wall of the flow pipeline 1. The control device 4 includes a hollow tube 40, which is fixedly installed on the inner wall of the flow pipeline 1. A mounting bracket 41 is fixedly installed on the circumferential surface of the hollow tube 40. A servo motor 42 is fixedly installed at the bottom of the mounting bracket 41. A reciprocating screw 43 is fixedly installed at the output end of the servo motor 42. A sliding rod 44 is threaded on the circumferential surface of the reciprocating screw 43. A sealing plate 45 is fixedly installed on one side of the bottom of the sliding rod 44. The flow rate is regulated at the micron level through the electromagnetic flow meter, servo motor, and reciprocating screw, which is far superior to traditional manual regulation. It is suitable for the needs of precise water distribution in different time periods and areas of the raw water pipeline. For example, when the demand for municipal water is high during the morning peak, the valve can be opened to increase the flow rate; when the demand is low at night, the valve can be closed to avoid waste and reduce flow regulation errors.

[0029] like Figure 1 - Figure 4 As shown, in a preferred embodiment, based on the above method, the number of connecting flanges 2 is further set to two, and they are symmetrical to each other along the vertical central axis of the flow pipe 1. The electromagnetic flow meter 3 is electrically connected to the servo motor 42.

[0030] like Figure 1 - Figure 4 As shown, in a preferred embodiment, based on the above method, the hollow tube 40 is further connected to the flow pipe 1, and the inner wall of the hollow tube 40 is slidably installed on the other side of the sealing plate 45.

[0031] like Figure 1 - Figure 4 As shown, in a preferred embodiment, based on the above method, the surface of the sealing plate 45 is further provided with a flow port 46, the radius of which is consistent with the inner wall radius of the flow pipe 1, so as to facilitate the flow of matching water.

[0032] like Figures 1-5 As shown, in a preferred embodiment, based on the above method, an auxiliary device 5 is further provided on the surface of the flow pipe 1. The auxiliary device 5 includes a hollow cylinder 50, which is fixedly installed on the inner wall of the hollow pipe 40. The number of hollow cylinders 50 is set to two, and they are symmetrical to each other along the vertical central axis of the sealing plate 45.

[0033] like Figure 1 - Figure 5As shown, in a preferred embodiment, based on the above method, a limiting rod 51 is slidably installed on the inner wall of the hollow cylinder 50, and a triangular groove 52 is formed on the surface of the sealing plate 45 near the hollow cylinder 50. The surface of the limiting rod 51 near the triangular groove 52 is set as an arc surface, so that the sealing plate 45 can reach the same position every time it is closed, thereby improving the accuracy of the closing position of the sealing plate 45 and ensuring the accuracy of flow control.

[0034] like Figure 1 - Figure 5 As shown, in a preferred embodiment, based on the above method, a guide rod 53 is fixedly installed on the surface of the limiting rod 51 away from the sealing plate 45, and a spring seat 54 is provided between the limiting rod 51 and the hollow cylinder 50, so that the limiting rod 51 can be reset by the provided spring seat 54.

[0035] Specifically, when using the raw water supply pipeline flow regulating device: after the flow pipe 1 is installed through the connecting flange 2, the water flow is monitored in real time by the electromagnetic flow meter 3. By detecting the induced electromotive force generated when the conductive liquid flows in a magnetic field, the flow velocity and flow rate of the liquid are indirectly calculated. Based on the detected flow rate, pressure and other parameters, they are compared with preset values, and then a control signal is sent to the servo motor 42. The output end of the servo motor 42 drives the reciprocating screw 43 to rotate. The rotation of the reciprocating screw 43 drives the sliding rod 44 to move. When the sliding rod 44 moves upward, it drives the sealing plate 45 to move upward, thus regulating the flow. When the opening 46 moves upward, water can flow out from the opening 46. When the sliding rod 44 moves downward, it drives the sealing plate 45 to move downward. The movement of the sealing plate 45 causes the opening 46 to move downward, gradually blocking the flow of water, thereby adjusting the valve opening. The raw water supply pipeline has high requirements for flow accuracy. The flow rate can be adjusted at the micron level by using an electromagnetic flow meter, servo motor, and reciprocating screw, which is far superior to traditional manual adjustment. This is suitable for the needs of precise water distribution in different time periods and areas of the raw water pipeline. For example, when the demand for municipal water is high during the morning peak, the valve can be opened to increase the flow rate; when the demand is low at night, the valve can be closed to avoid waste and reduce flow adjustment errors.

[0036] When the sealing plate 45 opens and closes, in the closed state, its triangular groove 52 contacts the arc surface of the limiting rod 51, causing the limiting rod 51 to move along the inner wall of the hollow cylinder 50 and then compress the spring seat 54. When the limiting rod 51 is at the center of the triangular groove 52, the spring seat 54 resets, causing the limiting rod 51 to insert into the triangular groove 52, so that the limiting rod 51 is temporarily in the triangular groove 52. The elastic force of the spring seat 54 temporarily fixes the sealing plate 45. The reciprocating screw 43 transmission itself has a certain degree of accuracy, but in actual operation... During operation, various factors, such as wear of the lead screw and transmission clearance, may cause deviations in the closing position of the sealing plate 45. The temporary limit can provide an accurate positioning when the sealing plate 45 is closed, so that the sealing plate 45 can reach the same position every time it closes, improving the accuracy of the closing position of the sealing plate 45 and thus ensuring the accuracy of flow control. When the sealing plate 45 moves normally, the inclined surface of the triangular groove 52 contacts the arc surface of the limit rod 51, causing the limit rod 51 to be squeezed out of the triangular groove 52, so that the sealing plate 45 can move normally.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A raw water supply pipeline flow regulation device, comprising a flow pipe (1), characterized in that, The flow pipe (1) is provided with a connecting flange (2), an electromagnetic flow meter (3) is provided on the circumferential surface of the flow pipe (1), and a control device (4) is provided on the inner wall of the flow pipe (1). The control device (4) includes a hollow tube (40), which is fixedly installed on the inner wall of the flow pipe (1). A mounting bracket (41) is fixedly installed on the circumferential surface of the hollow tube (40). A fixed end of a servo motor (42) is provided at the bottom of the mounting bracket (41). A reciprocating screw (43) is fixedly installed at the output end of the servo motor (42). A sliding rod (44) is threaded on the circumferential surface of the reciprocating screw (43). A sealing plate (45) is fixedly installed on one side of the bottom of the sliding rod (44).

2. The raw water supply pipeline flow regulating device according to claim 1, characterized in that, The number of connecting flanges (2) is set to two, and they are symmetrical to each other along the vertical central axis of the flow pipe (1). The electromagnetic flow meter (3) is electrically connected to the servo motor (42).

3. The raw water supply pipeline flow regulating device according to claim 1, characterized in that, The hollow tube (40) is connected to the flow pipe (1), and the inner wall of the hollow tube (40) is slidably installed on the other side of the sealing plate (45).

4. The raw water supply pipeline flow regulating device according to claim 1, characterized in that, The sealing plate (45) has a flow port (46) on its surface, and the radius of the flow port (46) is the same as the inner wall radius of the flow pipe (1).

5. The raw water supply pipeline flow regulating device according to claim 1, characterized in that, The surface of the flow pipe (1) is provided with an auxiliary device (5), which includes a hollow cylinder (50). The hollow cylinder (50) is fixedly installed on the inner wall of the hollow pipe (40). The number of the hollow cylinders (50) is set to two, and they are symmetrical to each other along the vertical central axis of the sealing plate (45).

6. The raw water supply pipeline flow regulating device according to claim 5, characterized in that, A limiting rod (51) is slidably installed on the inner wall of the hollow cylinder (50). A triangular groove (52) is provided on the surface of the sealing plate (45) near the hollow cylinder (50). The surface of the limiting rod (51) near the triangular groove (52) is set as an arc surface.

7. The raw water supply pipeline flow regulating device according to claim 6, characterized in that, A guide rod (53) is fixedly installed on the surface of the limiting rod (51) away from the sealing plate (45), and a spring seat (54) is provided between the limiting rod (51) and the hollow cylinder (50).

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