Electromagnetic metering pump fault detection method

Abstract

The invention relates to the related technical field of electromagnetic metering pumps, in particular to an electromagnetic metering pump fault detection method, which comprises the following steps of: observing the appearance of a faulted electromagnetic metering pump by detecting the appearance of the faulted electromagnetic metering pump; basic problems such as obvious damage of the pump body, looseness of a joint and damage of a cable are checked, then whether wiring in the control box is firm and whether elements such as a relay and a contactor are damaged are checked, a flowmeter and a pressure gauge are used for measuring actual flow and outlet pressure respectively, and finally, a pump cover is opened; the states of the quick-wear parts such as the diaphragm, the valve ball, the valve seat and the like are checked, the reasons of faults of the electromagnetic metering pump can be effectively detected through the detection, meanwhile, the non-fault parts of the electromagnetic metering pump can be detected and maintained, and the possibility of faults can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field related to electromagnetic metering pumps, and in particular to a fault detection method for electromagnetic metering pumps. Background Art

[0002] The electromagnetic metering pump uses an electromagnetic push rod to drive the diaphragm to reciprocate in the pump head, causing changes in the volume and pressure of the pump head cavity. The pressure changes cause the opening and closing of the suction valve and the discharge valve to achieve quantitative suction and discharge of liquid. The electromagnetic metering pump is driven by an electromagnet and is designed for conveying small flow and low pressure pipeline liquids. It is popular in the industry for its simple structure, low energy consumption, accurate metering and easy adjustment. When the electromagnetic metering pump fails, it needs to be maintained. Therefore, a method for detecting electromagnetic metering pump faults is particularly needed.

[0003] Because the existing electromagnetic metering pumps have deficiencies in fault detection, for example, during the detection process, the electromagnetic metering pump may be damaged secondary because the method used is too simple or the equipment operation is different, which affects the use of the electromagnetic metering pump. Summary of the invention

[0004] The object of the present invention is to provide a method for detecting faults of an electromagnetic metering pump to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides a method for detecting faults of an electromagnetic metering pump, which is performed according to the following steps: S1. Appearance inspection: When detecting faults in electromagnetic metering pumps, first observe whether there is any obvious damage on the outer surface of the pump body.

[0006] S2. Check the electrical system. When there is no obvious damage on the surface of the pump body, use the equipment to observe whether the components inside the pump control box are damaged.

[0007] S3. Flow and pressure detection, observe whether the internal components of the pump control box are damaged. At this time, use the equipment to measure the inlet and outlet pressures of the electromagnetic metering pump and compare them.

[0008] S4. Internal component inspection: when the external inspection shows no problems, the electromagnetic metering pump needs to be disassembled to observe whether there is any obvious damage to the internal parts of the pump body.

[0009] S5. After the system inspection, if there is no obvious damage to the pump body as a whole, restart the system used by the electromagnetic metering pump or adjust the parameters.

[0010] Preferably, the appearance inspection in S1 includes the connection of the pump body, the pump body cables, and the sound of the pump when it is running.

[0011] Preferably, the electrical system inspection in S2 includes detection of internal components of the control box and inverter parameters.

[0012] Preferably, the flow and pressure detection in S3 includes detecting the flow rates at the water inlet and outlet of the electromagnetic metering pump and comparing them with specified values.

[0013] Preferably, the internal component inspection in S4 includes inspecting the diaphragm, valve ball and valve seat inside the electromagnetic metering pump.

[0014] Preferably, the quality of the electronic components inside the electromagnetic metering pump control box will directly affect the safety of the electromagnetic metering pump. Therefore, during the detection process, the electronic components inside the electromagnetic metering pump control box need to use corresponding tools to ensure the authenticity of the test results.

[0015] Preferably, some parts inside the electromagnetic metering pump are easily damaged. Therefore, when inspecting the internal parts of the electromagnetic metering pump, it is necessary to pay attention to the inspection method of the diaphragm, valve ball, and valve seat to prevent damage to the internal parts of the electromagnetic metering pump during the inspection process.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Through the appearance and inspection of the faulty electromagnetic metering pump, observe the appearance of the electromagnetic metering pump, check whether the pump body has obvious damage, whether the connection is loose, whether the cable is damaged and other basic problems, and then check whether the wiring in the control box is firm, whether the relay, contactor and other components are damaged, and use the flow meter and pressure gauge to measure the actual flow and outlet pressure respectively, and finally open the pump cover to check the status of wearing parts such as diaphragm, valve ball, valve seat, etc. These tests can effectively detect the cause of the electromagnetic metering pump failure, and at the same time, they can also detect and maintain the non-faulty parts of the electromagnetic metering pump, which can effectively avoid the possibility of failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the steps of a method for detecting a fault of an electromagnetic metering pump according to the present invention; Figure 2 A schematic diagram of the appearance inspection structure of an electromagnetic metering pump fault detection method of the present invention; Figure 3 A schematic diagram of the electrical system inspection structure of an electromagnetic metering pump fault detection method of the present invention; Figure 4 It is a schematic diagram of the flow and pressure detection structure of an electromagnetic metering pump fault detection method of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 - Figure 4 , the present invention provides a method for detecting faults of an electromagnetic metering pump, which is performed according to the following steps; S1. Appearance inspection: When detecting faults in electromagnetic metering pumps, first observe whether there is any obvious damage on the outer surface of the pump body.

[0020] S2. Check the electrical system. When there is no obvious damage on the surface of the pump body, use the equipment to observe whether the components inside the pump control box are damaged.

[0021] S3. Flow and pressure detection, observe whether the internal components of the pump control box are damaged. At this time, use the equipment to measure the inlet and outlet pressures of the electromagnetic metering pump and compare them.

[0022] S4. Internal component inspection: when the external inspection shows no problems, the electromagnetic metering pump needs to be disassembled to observe whether there is any obvious damage to the internal parts of the pump body.

[0023] S5. After the system inspection, if there is no obvious damage to the pump body as a whole, restart the system used by the electromagnetic metering pump or adjust the parameters.

[0024] First of all, when testing the faulty electromagnetic metering pump, it is necessary to first test the external structure of the electromagnetic metering pump. When the outer wall surface of the electromagnetic metering pump pipeline or the connection of the water pump cable is found to be damaged, it is necessary to replace and maintain it. Use the flow meter and pressure gauge to measure the actual flow and outlet pressure respectively, and compare them with the set values. If there is a large deviation, it is necessary to check whether the pump head is blocked. At this time, the pump head should be removed, cleaned or replaced. Then use a multimeter to measure the power supply of the electromagnetic metering pump to check whether the power supply voltage meets the working requirements of the pump, and check whether the wiring in the control box is firm, whether the relay, contactor and other components are damaged, and pay attention to listening to the pump when it is running. Abnormal sounds often indicate internal mechanical failure or electrical problems. If there are abnormal sounds, you need to open the pump cover and check the status of the diaphragm, valve ball, valve seat and other wearing parts inside the electromagnetic metering pump. When the diaphragm is cracked or severely deformed, it needs to be replaced immediately; and pay attention to whether the seal between the valve ball and the valve seat is intact. Poor sealing between the valve ball and the valve seat will also cause unstable flow, which needs to be cleaned or replaced to ensure good sealing. At the same time, the lubrication condition of transmission parts such as bearings and gears cannot be ignored. Lubricating oil needs to be added to extend the service life of transmission parts such as bearings and gears. Finally, the electromagnetic metering pump use system should be inspected and maintained to avoid failure of the electromagnetic metering pump again.

[0025] Furthermore, the visual inspection in S1 includes the connections of the pump body, the pump body cables, and the sound of the pump when it is running.

[0026] Furthermore, the electrical system inspection in S2 includes the detection of internal components of the control box and inverter parameters.

[0027] Furthermore, the flow and pressure detection in S3 includes detecting the flow rates at the water inlet and outlet of the electromagnetic metering pump and comparing them with specified values.

[0028] Furthermore, the internal component inspection in S4 includes testing the diaphragm, valve ball, and valve seat inside the electromagnetic metering pump.

[0029] Furthermore, the quality of the electronic components inside the electromagnetic metering pump control box will directly affect the safe use of the electromagnetic metering pump. Therefore, during the detection process, the electronic components inside the electromagnetic metering pump control box need to use corresponding tools to ensure the authenticity of the test results.

[0030] Furthermore, some parts inside the electromagnetic metering pump are easily damaged. Therefore, when inspecting the internal parts of the electromagnetic metering pump, it is necessary to pay attention to the inspection method of the diaphragm, valve ball, and valve seat to prevent damage to the internal parts of the electromagnetic metering pump during the inspection process.

[0031] Working principle: First, when testing the faulty electromagnetic metering pump, it is necessary to first test the external structure of the electromagnetic metering pump. When the outer wall surface of the electromagnetic metering pump pipeline or the connection of the water pump cable is found to be damaged, it is necessary to replace and maintain it. Use the flow meter and pressure gauge to measure the actual flow rate and outlet pressure respectively, and compare them with the set values. If there is a large deviation, it is necessary to check whether the pump head is blocked. At this time, the pump head should be removed, cleaned or replaced. Then use a multimeter to measure the power supply of the electromagnetic metering pump to check whether the power supply voltage meets the working requirements of the pump, and check whether the wiring in the control box is firm, whether the relays, contactors and other components are damaged, and pay attention to the sound of the pump when it is running. , abnormal sounds often indicate internal mechanical failure or electrical problems. If there are abnormal sounds, you need to open the pump cover and check the status of the diaphragm, valve ball, valve seat and other wearing parts inside the electromagnetic metering pump. When the diaphragm is cracked or severely deformed, it needs to be replaced immediately; and pay attention to whether the seal between the valve ball and the valve seat is intact. Poor sealing between the valve ball and the valve seat will also cause unstable flow. It needs to be cleaned or replaced to ensure good sealing. At the same time, the lubrication condition of transmission parts such as bearings and gears cannot be ignored. Lubricating oil needs to be added to extend the service life of transmission parts such as bearings and gears. Finally, the electromagnetic metering pump use system should be inspected and maintained to avoid electromagnetic metering pump failure again. At the same time, the following technical points need to be noted: 1. External inspection: Check the connection of the pump body, the pump body cable, the sound of the pump when it is running, and check the internal components of the control box and the inverter parameters.

[0032] 2. Internal inspection: When inspecting the internal parts of the electromagnetic metering pump, it is necessary to pay attention to the inspection method of the diaphragm, valve ball, and valve seat to prevent damage to the internal parts of the electromagnetic metering pump during the inspection process.

[0033] 3. System detection: After the overall detection of the electromagnetic metering pump, the system used by the electromagnetic metering pump as a whole needs to be detected. Sometimes, a simple software restart or parameter adjustment can solve seemingly complex faults.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the implementation rules without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting faults of an electromagnetic metering pump is carried out according to the following steps; S1. Appearance inspection: when detecting the fault of electromagnetic metering pump, it is necessary to first observe whether there is any obvious damage on the outer surface of the pump body; S2. Check the electrical system. If there is no obvious damage on the surface of the pump body, use the equipment to observe whether the components inside the pump body control box are damaged. S3, flow and pressure test, observe that the internal components of the pump control box are not damaged, and use the equipment to measure the inlet and outlet pressures of the electromagnetic metering pump and compare them; S4. Internal component inspection: if the external inspection shows no problems, the electromagnetic metering pump needs to be disassembled to check whether there is any obvious damage to the internal parts of the pump body; S5. After the system inspection, if there is no obvious damage to the pump body as a whole, restart the system used by the electromagnetic metering pump or adjust the parameters.

2. The electromagnetic metering pump fault detection method according to claim 1, characterized in that: The appearance inspection in S1 includes the connection of the pump body, the pump body cable, and the sound of the pump when it is running.

3. The electromagnetic metering pump fault detection method according to claim 1, characterized in that: The electrical system inspection in S2 includes the detection of the internal components of the control box and the inverter parameters.

4. The electromagnetic metering pump fault detection method according to claim 1, characterized in that: The flow and pressure detection in S3 includes detecting the flow at the water inlet and outlet of the electromagnetic metering pump and comparing it with the specified value.

5. The electromagnetic metering pump fault detection method according to claim 1, characterized in that: The internal component inspection in S4 includes inspecting the diaphragm, valve ball and valve seat inside the electromagnetic metering pump.

6. The electromagnetic metering pump fault detection method according to claim 3 is characterized in that: The quality of the electronic components inside the electromagnetic metering pump control box will directly affect the safe use of the electromagnetic metering pump. Therefore, during the detection process, the electronic components inside the electromagnetic metering pump control box need to use appropriate tools to ensure the authenticity of the test results.

7. The electromagnetic metering pump fault detection method according to claim 5, characterized in that: Some parts inside the electromagnetic metering pump are easily damaged. Therefore, when inspecting the internal parts of the electromagnetic metering pump, it is necessary to pay attention to the inspection method of the diaphragm, valve ball, and valve seat to prevent damage to the internal parts of the electromagnetic metering pump during the inspection process.

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