Impeller water pump, exhaust gas treatment device, and carbonate preparation system

Abstract

The application discloses a kind of impeller water pump, including permanent magnet motor, shell, impeller, transmission shaft and front end vibration detector and rear end vibration detector. Impeller is rotatably arranged in shell;Transmission shaft one end is connected with the drive end of permanent magnet motor, the other end extends into shell and is connected with impeller;Front end vibration detector is arranged at the one end of permanent magnet motor close to its drive end, rear end vibration detector is arranged at the one end of permanent magnet motor away from its drive end. By permanent magnet motor driving impeller rotation realizes the delivery of fluid, when being applied to waste gas treatment device, since permanent magnet motor full load interval energy efficiency is higher than that of asynchronous motor, so it can effectively reduce energy consumption. At the same time, by front end vibration detector and rear end vibration detector, the running condition of permanent magnet motor is monitored, mechanical failure can be accurately diagnosed in early stage, and maintenance cost increase caused by failure is reduced. The application also discloses a kind of waste gas treatment device and carbonate preparation system.

Description

Technical Field

[0001] This application belongs to the field of fluid transport equipment technology, specifically relating to an impeller water pump, a waste gas treatment device, and a carbonate preparation system. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the demand for batteries and their key components, such as electrolytes, is also growing rapidly. Electrolytes are mainly composed of solvents, additives, and electrolytes. The solvents are typically carbonates, such as ethylene carbonate, propylene carbonate, dimethyl carbonate, ethyl methyl carbonate, and diethyl carbonate.

[0003] The production of carbonates generates byproducts such as methanol and ethylene glycol. If these industrial exhaust gases are discharged into the environment without treatment or with inadequate treatment, they will pollute the air, harm the ecological environment, and, if they enter the human body, cause serious harm to people's health.

[0004] Water pumps are widely used as general-purpose machinery. In waste gas treatment systems, water pumps are used for processes such as spray washing, chemical solution circulation and proportioning, and condensation cooling. Existing water pumps typically use ordinary asynchronous motors with impellers to transport fluids. However, in scenarios like waste gas treatment systems that require long-term continuous operation and large load fluctuations, the efficiency of asynchronous motors drops significantly under light load or no-load conditions, resulting in higher energy costs. Utility Model Content

[0005] The technical problem to be solved by this application is that the existing water pumps used in waste gas treatment devices use asynchronous motors, which have high energy consumption. In order to solve this technical problem, an impeller water pump, a waste gas treatment device and a carbonate preparation system that can reduce energy consumption are provided.

[0006] The technical solution proposed in this application is as follows: An impeller water pump, comprising: Permanent magnet motor; A housing and an impeller, wherein the impeller is rotatably disposed within the housing; The drive shaft has one end connected to the drive end of the permanent magnet motor, and the other end extends into the housing and is connected to the impeller. A front-end vibration detector and a rear-end vibration detector are provided, wherein the front-end vibration detector is located at the end of the permanent magnet motor closer to its drive end, and the rear-end vibration detector is located at the end of the permanent magnet motor farther from its drive end.

[0007] The aforementioned impeller pump, driven by a permanent magnet motor, transports fluid. When applied to waste gas treatment devices, the permanent magnet motor's higher energy efficiency across the entire load range compared to an asynchronous motor effectively reduces energy consumption. Furthermore, monitoring the permanent magnet motor's operation using front-end and rear-end vibration detectors allows for early and accurate diagnosis of mechanical faults, minimizing the risk of severe malfunctions and increased maintenance costs.

[0008] Furthermore, the permanent magnet motor includes a frame, a front cover, a rear cover, a stator, and a rotor. The front cover and the rear cover are respectively connected to opposite ends of the frame. The stator and the rotor are both disposed on the frame, and the rotor extends from the front cover and is connected to the drive shaft. The front vibration detector is disposed on the front cover.

[0009] Furthermore, the permanent magnet motor also includes an encoder, which is disposed on the base and connected to the rotor.

[0010] Furthermore, the rear end cover is disposed over the encoder, and the rear end cover has multiple heat dissipation holes; The permanent magnet motor also includes a cooling fan, which is provided corresponding to the rear end cover.

[0011] Furthermore, the permanent magnet motor also includes a rear bearing, which is disposed on the base, the rear end of the rotor is supported on the rear bearing, and the rear end vibration detector is disposed on the rear bearing.

[0012] Furthermore, it also includes a shaft end vibration detector, which is disposed on the drive shaft.

[0013] Furthermore, the front-end vibration detector, the rear-end vibration detector, and the shaft-end vibration detector are all triaxial vibration sensors.

[0014] Furthermore, a vibration damping pad is provided between the drive end and the transmission shaft.

[0015] An exhaust gas treatment device includes the aforementioned impeller pump.

[0016] A carbonate preparation system, comprising the impeller pump or the waste gas treatment device. Attached Figure Description

[0017] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the structure of an impeller pump provided in an embodiment of this application; Figure 2 for Figure 1 The diagram shows the structure of the connecting flange in the impeller pump. Figure 3 for Figure 1 The diagram shows the structure of the permanent magnet motor in the impeller water pump.

[0019] Label Explanation: 110. Permanent magnet motor; 111. Frame; 112. Front cover; 113. Rear cover; 114. Stator; 115. Rotor; 1151. Drive end; 116. Front bearing; 117. Rear bearing; 118. Encoder; 119. Cooling fan; 120. Housing; 130. Drive shaft; 140. Front vibration detector; 150. Rear vibration detector; 160. Shaft end vibration detector; 170. Vibration damping pad; 180. Connecting flange. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] On the one hand, such as Figure 1 As shown, one embodiment of this application provides an impeller water pump, including a permanent magnet motor 110, a housing 120, an impeller, and a drive shaft 130. The impeller is rotatably disposed within the housing 120. One end of the drive shaft 130 is connected to the drive end 1151 of the permanent magnet motor 110, and the other end extends into the housing 120 and is connected to the impeller, so that the permanent magnet motor 110 drives the impeller to rotate within the housing 120 via the drive shaft 130. It is also determined that the housing 120 has a conveying channel, along which fluid can be conveyed during the rotation of the impeller.

[0027] It should be noted that when applied to exhaust gas treatment devices, the permanent magnet motor 110 has higher energy efficiency across the entire load range compared to asynchronous motors, and can effectively reduce energy consumption during long-term continuous operation. Secondly, the permanent magnet motor 110 adopts vector control, which makes speed regulation more precise and can quickly and accurately adjust the output according to the actual working conditions during operation. In addition, the permanent magnet motor 110 uses permanent magnet materials, and does not need to draw excitation current from the power grid during operation like asynchronous motors, which can effectively reduce copper losses in the stator 114 winding and iron losses in the core, thus reducing maintenance costs.

[0028] Furthermore, the impeller pump also includes a front-end vibration detector 140 and a rear-end vibration detector 150. The front-end vibration detector 140 is located at the end of the permanent magnet motor 110 closest to its drive end 1151, and the rear-end vibration detector 150 is located at the end of the permanent magnet motor 110 furthest from its drive end. It should be noted that the end of the permanent magnet motor 110 closest to its drive end 1151 is the front end, and the corresponding end furthest from its drive end 1151 is the rear end. The two vibration detectors can effectively detect the vibration of the permanent magnet motor 110, thereby monitoring the operating status of the permanent magnet motor 110 and enabling early and accurate diagnosis of mechanical faults, such as balance problems, reducing the risk of increased maintenance costs due to severe faults.

[0029] The aforementioned impeller pump, driven by a permanent magnet motor 110, transports fluid. When applied to waste gas treatment devices, the permanent magnet motor 110's energy efficiency across the entire load range is higher than that of an asynchronous motor, thus effectively reducing energy consumption. Simultaneously, by monitoring the operating status of the permanent magnet motor 110 using a front-end vibration detector 140 and a rear-end vibration detector 150, mechanical faults can be accurately diagnosed at an early stage, reducing the risk of increased maintenance costs due to severe malfunctions.

[0030] In one embodiment, the impeller pump further includes a shaft end vibration detector 160, which is disposed on the drive shaft 130 and used to detect the vibration of the drive shaft 130. Thus, combined with the aforementioned front-end vibration detector 140 and rear-end vibration detector 150, when abnormal vibration is detected, the fault location can be determined based on the detection results of all three, shortening the time for fault location and improving maintenance efficiency. Preferably, the front-end vibration detector 140, the rear-end vibration detector 150, and the shaft end vibration detector 160 are all triaxial vibration sensors.

[0031] Specifically: when the shaft end vibration detector 160 detects abnormal vibration, it may be due to loosening or slippage at the connection between the drive shaft 130 and the drive end 1151, or overload; when the front end vibration detector 140 detects abnormal vibration, it may be due to a problem with the concentricity of the drive shaft of the permanent magnet motor 110; when the rear end vibration detector 150 detects abnormal vibration, it may be due to bearing wear in the permanent magnet motor 110 or an imbalance of the rotor 115.

[0032] Please see Figure 2 In one embodiment, a vibration damping pad 170 is provided between the drive end 1151 and the transmission shaft 130 to absorb vibration while achieving torque transmission, thus preventing the vibration of the permanent magnet motor 110 and the impeller from interfering with each other. Figure 2 For example, the right end of the drive shaft 130 is fixedly connected to the drive end 1151. Two connecting flanges 180 can be provided at the right end of the drive shaft 130 and the drive end 1151 respectively. The two connecting flanges 180 are fixedly connected by bolts, and the vibration damping pad 170 is sandwiched between the two flange faces. Specifically, the vibration damping pad 170 is an annular rubber pad.

[0033] In one embodiment, the permanent magnet motor 110 includes a frame 111, a front cover 112, a rear cover 113, a stator 114, and a rotor 115. The front cover 112 and the rear cover 113 are respectively connected to opposite ends of the frame 111. The stator 114 and the rotor 115 are both disposed on the frame 111, and the rotor 115 extends from the front cover 112 and is connected to the drive shaft 130. The front vibration detector 140 is disposed on the front cover 112.

[0034] Furthermore, the permanent magnet motor 110 also includes a front bearing 116 and a rear bearing 117. The front bearing 116 and rear bearing 117 are spaced apart on the base 111. The front end of the rotor 115 is supported on the front bearing 116, and the rear end is supported on the rear bearing 117. The front cover 112 contacts the front bearing 116, thereby allowing the front vibration detector 140 to detect the vibration of the front end of the rotor 115. The rear vibration detector 150 is located on the rear bearing 117 to detect the vibration of the rear end of the rotor 115. This ensures comprehensive monitoring of the rotor 115's vibration.

[0035] In one embodiment, the permanent magnet motor 110 further includes an encoder 118, which is mounted on the frame 111 and connected to the rotor 115 for detecting the rotational speed of the rotor 115. It is certain that in actual use, a control mechanism electrically connected to the permanent magnet motor 110 will be provided. This control mechanism can obtain the rotational speed of the permanent magnet motor 110 through the encoder 118, thereby adjusting the rotational speed of the permanent magnet motor 110 according to the corresponding operating conditions.

[0036] In one embodiment, a rear cover 113 covers the encoder 118, and the rear cover 113 has multiple heat dissipation holes. The permanent magnet motor 110 also includes a cooling fan 119, which is located on the outside of the rear cover 113, specifically corresponding to the position of the heat dissipation holes. The cooling fan blows cooling air from the heat dissipation holes into the rear cover 113 to dissipate heat from the encoder 118 inside the rear cover 113. Of course, other heat-generating components within the space covered by the rear cover 113 can also be dissipated by the cooling fan 119. In this embodiment, the cooling fan 119 is located on the outside of the rear cover 113. In other embodiments, the cooling fan 119 can also be located within the space covered by the rear cover 113 to exhaust hot air from the space covered by the rear cover 113 through the heat dissipation holes to dissipate heat from the encoder 118.

[0037] To demonstrate the advantages of the impeller pump provided in this application compared to traditional asynchronous motor pumps, we will use its application in a wastewater treatment device as an example for verification: Both the permanent magnet motor 110 in the impeller pump and the asynchronous motor in the traditional pump are 75kW, with an annual operating time of 8000 hours. The annual power consumption of the impeller pump is 564,000 kWh, while that of the traditional pump is 595,200 kWh. Furthermore, taking an electricity price of 0.7 yuan per kilowatt-hour as an example, using the impeller pump can save 21,840 yuan in electricity costs annually.

[0038] Based on this, in another aspect, this application also provides a wastewater treatment device, which includes the impeller pump in the above embodiments.

[0039] In addition, this application also provides a carbonate preparation system, which includes the impeller pump or wastewater treatment device in the above embodiments.

[0040] In summary, the impeller pump, wastewater treatment device, and carbonate preparation system provided in this application have at least the following advantages: 1. It adopts a permanent magnet motor 110, which has lower energy consumption and maintenance costs, faster response, and more accurate output adjustment; 2. Setting up a front-end vibration detector 140, a rear-end vibration detector 150, and a shaft-end vibration detector 160 can not only achieve vibration monitoring, avoiding serious mechanical failures that lead to increased maintenance costs, but also enable rapid location of faults, shorten repair time, and improve maintenance efficiency. 3. A vibration damping pad 170 is provided between the drive shaft 130 and the drive end 1151 to reduce vibration while transmitting torque, so as to avoid the vibration of the impeller and the vibration of the permanent magnet motor 110 affecting each other and improving the reliability of the water pump.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impeller water pump, characterized in that, include: Permanent magnet motor; A housing and an impeller, wherein the impeller is rotatably disposed within the housing; The drive shaft has one end connected to the drive end of the permanent magnet motor, and the other end extends into the housing and is connected to the impeller. A front-end vibration detector and a rear-end vibration detector are provided, wherein the front-end vibration detector is located at the end of the permanent magnet motor closer to its drive end, and the rear-end vibration detector is located at the end of the permanent magnet motor farther from its drive end.

2. The impeller pump according to claim 1, characterized in that, The permanent magnet motor includes a frame, a front cover, a rear cover, a stator, and a rotor. The front cover and the rear cover are respectively connected to opposite ends of the frame. The stator and the rotor are both disposed on the frame, and the rotor extends from the front cover and is connected to the drive shaft. The front vibration detector is disposed on the front cover.

3. The impeller pump according to claim 2, characterized in that, The permanent magnet motor also includes an encoder, which is mounted on the base and connected to the rotor.

4. The impeller pump according to claim 3, characterized in that, The rear end cover is disposed over the encoder, and the rear end cover has multiple heat dissipation holes; The permanent magnet motor also includes a cooling fan, which is used to dissipate heat from the encoder.

5. The impeller pump according to claim 2, characterized in that, The permanent magnet motor also includes a rear bearing, which is mounted on the base. The rear end of the rotor is supported on the rear bearing, and the rear end vibration detector is mounted on the rear bearing.

6. The impeller pump according to claim 1, characterized in that, It also includes a shaft end vibration detector, which is disposed on the drive shaft.

7. The impeller pump according to claim 6, characterized in that, The front-end vibration detector, the rear-end vibration detector, and the shaft-end vibration detector are all triaxial vibration sensors.

8. The impeller pump according to claim 1, characterized in that, A vibration damping pad is provided between the drive end and the transmission shaft.

9. A waste gas treatment device, characterized in that, The impeller pump as described in any one of claims 1-8.

10. A carbonate preparation system, characterized in that, Includes the impeller water pump according to any one of claims 1-8 or the waste gas treatment device according to claim 9.

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