A device for solving the problem of automatic stop of welding machine caused by low water pressure

Abstract

The utility model discloses a device for solving the automatic shutdown of welding machine caused by low water pressure, and relates to the field of welding machine cooling. The device comprises a double-pump connecting piece, a low-pressure backflow prevention assembly is installed at the front end of the double-pump connecting piece, a double-pump partition block is fixedly connected in the double-pump connecting piece, the double-pump partition block is used for separating the output channels of two groups of pump machines, the low-pressure backflow prevention assembly comprises an output shell, an electric contact pressure gauge and a reverse rotation prevention plate, the output shell is arranged at the front end of the double-pump partition block, the electric contact pressure gauge is installed at the upper end of the output shell, and the reverse rotation prevention plate is rotationally connected in the output shell. The reverse rotation prevention plate is used for preventing liquid backflow when one group of water pumps stops. The device solves the problem of water pressure reduction within the switching time, thereby solving the problem of automatic shutdown of the automatic welding machine due to low water pressure. In addition, the low-pressure backflow prevention assembly and the reverse rotation prevention plate are arranged to prevent water flow diversion when one group of pump machines completely stops, thereby protecting the water pumps and maintaining the stability of the pressure in the pipe.

Description

Technical Field

[0001] This utility model relates to the field of welding machine cooling, and in particular to a device for solving the problem of automatic shutdown of welding machines caused by low water pressure. Background Technology

[0002] To cool and protect welding equipment, welding machines require a cooling water circulation system. During welding, this system continuously circulates water to remove heat from the machine's internal components, preventing overheating. If the circulation system malfunctions or contains air, it can disrupt the normal circulation of the coolant, reducing its cooling effect and causing the temperature of various components to rise, impacting welding quality and equipment lifespan. Therefore, highly automated welding machines are typically equipped with low-pressure alarms to protect the equipment.

[0003] Cooling water circulation systems typically have two circulating water pumps, serving as backups for each other. During timed switching, the main and backup pumps start and stop simultaneously, with the switching time usually completed within 0.5 minutes.

[0004] During the switchover period, because the main pump has stopped while the standby pump is still starting, the circulating water pressure is low, causing the automatic welding machine to automatically shut down due to a low circulating water pressure alarm. The current practice is to wait for the water pressure to return to normal and then have the operator restart each welding machine individually. This method is time-consuming and labor-intensive, hindering the production of the automated welding line, affecting the production cycle, and reducing production efficiency. To address these issues, this invention provides a device to solve the problem of automatic welding machine shutdown caused by low water pressure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a device for resolving the automatic shutdown of welding machines caused by low water pressure. It solves the problem that during the switching period, when the main pump has stopped but the standby pump is still starting, the circulating water pressure is low, causing the automatic welding machine to automatically shut down due to a low circulating water pressure alarm. The existing method for resuming operation when the automatic welding machine shuts down due to a low circulating water pressure alarm is to wait for the water pressure to return to normal and then have the operator restart each welding machine individually. This solution is time-consuming and labor-intensive, hindering the production of automated welding lines, affecting production cycle time, and reducing production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for solving the problem of automatic shutdown of a welding machine caused by low water pressure, comprising a dual-pump connector, an anti-low-pressure backflow component installed at the front end of the dual-pump connector, a dual-pump separator block fixedly connected inside the dual-pump connector, the dual-pump separator block being used to separate the output channels of two sets of pumps, the anti-low-pressure backflow component comprising an output housing, an electric contact pressure gauge, and a back-reversing plate, the output housing being disposed at the front end of the dual-pump separator block, the electric contact pressure gauge being installed at the upper end of the output housing, the electric contact pressure gauge being used to detect the pressure of the water flowing through the output housing, and using the electrical signal of the electric contact pressure gauge and the start-up signal of the standby pump as the stop-pump signal of the main pump, the back-reversing plate being rotatably connected inside the output housing, the back-reversing plate being used to prevent liquid backflow when one set of pumps stops.

[0007] Preferably, the dual-pump connector includes a connecting housing, the dual-pump separator is installed inside the connecting housing, and the dual-pump separator has two sets of output channels, which are used to introduce two sets of output fluid into the output housing.

[0008] Preferably, the dual-pump connector further includes a pump body connecting flange, with side through holes on both sides of the connecting housing, the pump body connecting flange being fixedly connected in the side through holes, the pump body connecting flange communicating with the output channel, and the pump body connecting flange being used for installation with the pump body.

[0009] Preferably, the low-pressure backflow prevention assembly further includes a connecting ring plate, which is fixedly connected to the back end of the output housing, and the output housing is fixedly mounted on the connecting housing.

[0010] Preferably, the low-pressure backflow prevention assembly further includes a tapered pipe section and an output pipe. The tapered pipe section is fixedly connected to the front end of the output housing, and the output pipe is fixedly connected to the front end of the tapered pipe section. The electrical contact pressure gauge is installed on the output pipe, and the output pipe is used to connect to the pipeline.

[0011] Preferably, sealing plugs are installed on both sides of the anti-reverse deflection plate, and the sealing plugs are used to engage with the output channel.

[0012] The technical effects and advantages of this utility model are as follows: This device solves the problem of water pressure drop during switching time by adding an electrical contact pressure gauge to the water pump outlet main pipe. The "AND" logic of the pressure gauge's electrical signal and the standby pump's start signal is used as the main pump's stop signal. This solves the problem of automatic shutdown of the automatic welding machine due to low water pressure. Furthermore, by setting up an anti-low-pressure backflow component and an anti-reverse reversing plate, it prevents water flow diversion when a set of pumps completely stops, protecting the water pump and maintaining stable pressure in the pipe. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall front structure of this utility model; Figure 2 This is a schematic diagram of the overall exploded structure of this utility model; Figure 3 This is a schematic diagram showing the detailed structure of the low-pressure backflow prevention component of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the output housing of this utility model.

[0015] In the diagram: 1. Dual pump connector; 11. Connecting housing; 111. Side through hole; 12. Dual pump separator; 121. Output channel; 13. Pump body connecting flange; 2. Anti-low-pressure backflow assembly; 21. Output housing; 22. Connecting ring plate; 23. Electrical contact pressure gauge; 24. Anti-reverse deflection plate; 241. Sealing plug; 25. Conical pipe section; 26. Output pipe. Detailed Implementation

[0016] 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.

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] This utility model discloses a device for solving the problem of automatic shutdown of a welding machine caused by low water pressure, according to the attached... Figures 1 to 3As shown, the system includes a dual-pump connector 1, with a low-pressure backflow prevention component 2 installed at the front end of the dual-pump connector 1. A dual-pump separator 12 is fixedly connected inside the dual-pump connector 1. The dual-pump separator 12 is used to separate the output channels of the two sets of pumps. The low-pressure backflow prevention component 2 includes an output housing 21, an electric contact pressure gauge 23, and a reverse-actuating plate 24. The output housing 21 is located at the front end of the dual-pump separator 12. The electric contact pressure gauge 23 is installed at the upper end of the output housing 21. The electric contact pressure gauge 23 is used to detect the pressure of the water flowing through the output housing 21, and the electrical signal of the electric contact pressure gauge 23 and the start signal of the standby pump are used as the stop signal of the main pump. The reverse-actuating plate 24 is rotatably connected inside the output housing 21. The reverse-actuating plate 24 is used to prevent liquid backflow when one set of pumps stops.

[0019] In this embodiment, when the pump body needs to be replaced, the standby pump body is turned on first. After the pressure gauge 23 of the electrical contact reaches the preset value, a signal is triggered and an "AND" logic is formed with the turned-on standby pump body to link the main pump to stop, so that the pressure will not fluctuate when the main pump stops.

[0020] According to the appendix Figures 1 to 2 As shown, the dual-pump connector 1 further includes a connecting housing 11, a dual-pump partition block 12 installed inside the connecting housing 11, and two sets of output channels 121 opened inside the dual-pump partition block 12. The two sets of output channels 121 are used to introduce two sets of output fluid into the output housing 21. The dual-pump connector 1 also includes a pump body connecting flange 13. Side through holes 111 are opened on both sides of the connecting housing 11. The pump body connecting flange 13 is fixedly connected in the side through holes 111. The pump body connecting flange 13 communicates with the output channels 121 and is used for installation with the pump body.

[0021] According to the appendix Figures 3 to 4 As shown, the low-pressure backflow prevention assembly 2 further includes a connecting ring plate 22, which is fixedly connected to the back end of the output housing 21. The output housing 21 is fixedly mounted on the connecting housing 11. The low-pressure backflow prevention assembly 2 also includes a tapered tube section 25 and an output tube 26. The tapered tube section 25 is fixedly connected to the front end of the output housing 21, and the output tube 26 is fixedly connected to the front end of the tapered tube section 25. An electric contact pressure gauge 23 is mounted on the output tube 26, which is used to connect to a pipeline. Sealing plugs 241 are installed on both sides of the anti-reverse deflection plate 24, which are used to snap into the output channel 121.

[0022] In this embodiment, when the water in one set of output channels 121 is low or even dry, the anti-reverse actuation plate 24, under the action of the water flow in the other output channel 121, closes the dry output channel 121. This not only prevents the water flow in the two sets of output channels 121 from turbulent collision, but also closes the output channel 121 to prevent backflow.

[0023] 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. A device for solving the problem of automatic shutdown of a welding machine caused by low water pressure, comprising a dual-pump connector (1), characterized in that, The front end of the dual-pump connector (1) is equipped with a low-pressure backflow prevention component (2), and a dual-pump separator (12) is fixedly connected inside the dual-pump connector (1). The dual-pump separator (12) is used to separate the output channels of the two sets of pumps. The low-pressure backflow prevention component (2) includes an output housing (21), an electric contact pressure gauge (23), and a reverse-reversing plate (24). The output housing (21) is located at the front end of the dual pump separator (12). The electric contact pressure gauge (23) is installed on the upper end of the output housing (21). The electric contact pressure gauge (23) is used to detect the pressure of the water flowing through the output housing (21). The electrical signal of the electric contact pressure gauge (23) and the start signal of the standby pump are used as the stop signal of the main pump. The anti-reverse actuation plate (24) is rotatably connected inside the output housing (21). The anti-reverse actuation plate (24) is used to prevent liquid backflow when a set of water pumps stops.

2. The device for solving the problem of automatic shutdown of welding machine caused by low water pressure according to claim 1, characterized in that, The dual-pump connector (1) includes a connecting housing (11), and the dual-pump separator (12) is installed inside the connecting housing (11). The dual-pump separator (12) has two sets of output channels (121) inside, and the two sets of output channels (121) are used to introduce two sets of output fluid into the output housing (21).

3. The device for solving the problem of automatic shutdown of welding machine caused by low water pressure according to claim 2, characterized in that, The dual-pump connector (1) also includes a pump body connecting flange (13). The connecting housing (11) has side through holes (111) on both sides. The pump body connecting flange (13) is fixedly connected in the side through holes (111). The pump body connecting flange (13) is connected to the output channel (121). The pump body connecting flange (13) is used for installation with the pump body.

4. The device for solving the problem of automatic shutdown of welding machine caused by low water pressure according to claim 2, characterized in that, The low-pressure backflow prevention assembly (2) also includes a connecting ring plate (22), which is fixedly connected to the back end of the output housing (21), and the output housing (21) is fixedly installed on the connecting housing (11).

5. The device for solving the problem of automatic shutdown of welding machine caused by low water pressure according to claim 1, characterized in that, The anti-low-pressure backflow assembly (2) also includes a tapered pipe section (25) and an output pipe (26). The tapered pipe section (25) is fixedly connected to the front end of the output housing (21), and the output pipe (26) is fixedly connected to the front end of the tapered pipe section (25). The electric contact pressure gauge (23) is installed on the output pipe (26), and the output pipe (26) is used to connect to the pipeline.

6. The device for solving the problem of automatic shutdown of a welding machine caused by low water pressure according to claim 2, characterized in that, The anti-reverse reversing plate (24) is equipped with sealing plugs (241) on both sides, and the sealing plugs (241) are used to snap into the output channel (121).

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