Air volume detection and dust collection device

Abstract

The utility model relates to the technical field of industrial air volume detection, in particular to an air volume detection and dust collection device which comprises a workbench, a welding furnace is arranged on the workbench, the welding furnace is communicated with a connecting frame and an air draft pipeline externally connected with environmental assessment equipment, and the air draft pipeline is communicated with the connecting frame. The connecting frame is detachably provided with a detection unit used for detecting the air quantity passing through the connecting frame, and the workbench is further provided with a limiting mechanism used for fixing the detection unit to the connecting frame, so that the detection unit can stably measure the air quantity. When the soldering flux evaporated by heating in the welding furnace is extracted, the soldering flux gas firstly passes through the connecting frame communicated with the welding furnace, then is extracted into the air draft pipeline along the air flow, and finally is discharged into external environmental assessment equipment through the air draft pipeline to be filtered, and at the moment, the detection unit arranged on the connecting frame is used for detecting the soldering flux. Abnormity of the air draft system can be found in time by detecting the air volume, and air volume control or equipment maintenance can be conveniently conducted in time.

Description

Technical Field

[0001] This application relates to the field of industrial air volume detection technology, and in particular to a device for detecting air volume and collecting dust. Background Technology

[0002] Flux is typically used in welding furnaces to weld products. After the flux evaporates, it produces some gaseous substances and tiny particles. These substances may re-adhere to the welding surface, affecting the welding quality and causing problems such as weak welds and poor conductivity. Therefore, it is necessary to extract the evaporated flux in the welding furnace through an exhaust system. The extracted flux is discharged through exhaust pipes to external environmental protection equipment for further filtration and discharge treatment, thereby ensuring the smooth progress of product welding operations in the welding furnace.

[0003] During the ventilation process, if the air volume is too large, the airflow speed inside the furnace will be too fast, which will disrupt the normal flow of the shielding gas inside the welding furnace, preventing the shielding gas from effectively covering the welding area. It will also remove other shielding gases in the welding furnace, such as nitrogen, thus affecting the welding effect of the product. If the air volume is too small, it may cause pipe blockage or incomplete extraction. Therefore, it is necessary to detect abnormalities in the ventilation system in a timely manner through air volume detection. Utility Model Content

[0004] In order to detect the amount of air drawn, this application provides a device for detecting air volume and dust collection.

[0005] This application provides a device for detecting air volume and collecting dust, which adopts the following technical solution:

[0006] A device for detecting air volume and collecting dust includes a workbench, on which a welding furnace is provided. The welding furnace is connected to a connecting frame and an exhaust duct for external environmental assessment equipment. The exhaust duct is connected to the connecting frame. A detection unit for detecting the air volume passing through the connecting frame is detachably provided on the connecting frame. A limiting mechanism for fixing the detection unit to the connecting frame is also provided on the workbench.

[0007] By adopting the above technical solution, when the flux evaporated by heating in the welding furnace is extracted, the flux gas first passes through the connecting frame connected to the welding furnace, and then is drawn into the exhaust duct along the airflow. Finally, it is discharged to the external environmental assessment equipment for filtration treatment through the exhaust duct. At this time, by using the detection unit set on the connecting frame, abnormalities in the exhaust system can be detected in time by detecting the air volume, which facilitates timely air volume control or equipment maintenance, reducing the equipment failure rate. Moreover, by using the setting of the limit structure, the detection unit can stably measure the air volume, thereby improving the measurement accuracy.

[0008] Preferably, a detection port is provided on the side of the connecting frame away from the exhaust duct, and the detection unit includes a pressure plate for sealing the detection port and a sensor for detecting the air volume, the sensor being disposed on the pressure plate.

[0009] By adopting the above technical solution, and using the pressure plate and sensor, the pressure plate can press and seal the detection port of the connecting frame to prevent gas leakage from affecting the detection accuracy and polluting the environment; at the same time, the sensor on the pressure plate can detect the air volume passing through the connecting frame in real time, which makes it easy for staff to understand the air volume.

[0010] Preferably, two limiting mechanisms are symmetrically arranged. Each limiting mechanism includes a connecting plate, an electric cylinder, a fixing bolt for fixing the electric cylinder to the connecting plate, and an abutting plate for forming an abutting fit with the pressure plate. Each connecting plate is arranged on the worktable, and the piston rod of the electric cylinder is connected to the abutting plate.

[0011] By adopting the above technical solution, during use, the electric cylinder drives the abutment plate to form an abutment fit with the pressure plate, so that the abutment plate can stably seal the detection port of the connecting frame, thereby ensuring the accuracy of the sensor's detection of air volume.

[0012] Preferably, the connecting plate is provided with a waist-shaped groove, and the fixing bolt passes through the waist-shaped groove and is threadedly connected to the electric cylinder.

[0013] By adopting the above technical solution, the fixing bolts are inserted through the waist-shaped groove and connected to the electric cylinder by threads. The setting of the waist-shaped groove allows the installation position of the electric cylinder to be adjusted within a certain range, which facilitates fine-tuning of the position of the electric cylinder according to the actual situation, so as to adapt to different installation requirements and ensure a good fixing effect on the pressure plate.

[0014] Preferably, the exhaust duct includes an S-shaped pipe, a straight pipe for connecting the connecting frame, and an external pipe for connecting external environmental assessment equipment. One end of the S-shaped pipe is connected to the straight pipe, and the other end of the S-shaped pipe is connected to the external pipe.

[0015] By adopting the above technical solution and utilizing the S-shaped pipe, straight pipe, and external pipe, this structural design makes the layout of the exhaust duct more flexible. The straight pipe is used to connect with the connecting frame to ensure that the flux gas can smoothly enter the exhaust duct from the connecting frame. The external pipe is responsible for connecting with the external environmental assessment equipment to realize the emission and further treatment of the gas. When the flux gas evaporated by heating in the welding furnace is extracted and enters the exhaust duct through the connecting frame, the large dust particles mixed in it will flow with the airflow. The sudden change in airflow direction will cause the large dust particles to settle at the bend and eventually accumulate at the bottom of the S-shaped pipe.

[0016] Preferably, a first connecting ring for connecting the straight pipe and the S-shaped pipe is threaded between the straight pipe and the S-shaped pipe, and a second connecting ring for connecting the S-shaped pipe and the outer connecting pipe is threaded between the S-shaped pipe and the outer connecting pipe.

[0017] By adopting the above technical solution, the straight pipe and the S-shaped pipe are connected by a first connecting ring threaded connection, and the S-shaped pipe and the outer connecting pipe are connected by a second connecting ring threaded connection. The threaded connection method facilitates the installation and disassembly of the S-shaped pipe, the straight pipe and the outer connecting pipe, making it convenient to maintain, repair or replace parts of the exhaust duct, thus improving maintainability.

[0018] Preferably, the S-shaped tube is provided with a filter screen for filtering large dust particles.

[0019] By adopting the above technical solution and utilizing the filter screen inside the S-shaped tube, the filter screen can filter large dust particles, prevent large dust particles from entering the external environmental assessment equipment, reduce the filtration burden of the environmental assessment equipment, and at the same time avoid large dust particles from clogging or damaging the exhaust pipe and other components, thus extending the service life of the device.

[0020] Preferably, the connecting frame is symmetrically provided with guide surfaces for guiding the gas inside the connecting frame smoothly into the exhaust duct.

[0021] By adopting the above technical solution and utilizing the guide surface on the connecting frame, the guide surface can guide the gas inside the connecting frame to smoothly enter the exhaust duct, reducing the resistance and turbulence of the gas inside the connecting frame, making the gas flow smoother and improving the exhaust efficiency. At the same time, it is also beneficial to ensure the accuracy of air volume detection, because stable gas flow helps the sensor to detect the air volume more accurately.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. When the flux evaporated by heating in the welding furnace is extracted, the flux gas first passes through the connecting frame connected to the welding furnace, and then is drawn into the exhaust duct along the airflow. Finally, it is discharged to the external environmental assessment equipment for filtration treatment through the exhaust duct. At this time, the detection unit on the connecting frame can detect abnormalities in the exhaust system in time by detecting the air volume, which facilitates timely air volume control or equipment maintenance, reducing the equipment failure rate. In addition, the setting of the limit structure enables the detection unit to stably measure the air volume, thereby improving the measurement accuracy.

[0024] 2. The electric cylinder drives the abutment plate to form an abutment fit with the pressure plate, so that the abutment plate can stably seal the detection port of the connecting frame, thereby ensuring the accuracy of the air volume detected by the sensor;

[0025] 3. By utilizing the S-shaped pipe, straight pipe, and external connecting pipe, this structural design makes the layout of the exhaust duct more flexible. The straight pipe is used to connect with the connecting frame to ensure that the flux gas can smoothly enter the exhaust duct from the connecting frame. The external connecting pipe is responsible for connecting with external environmental assessment equipment to realize the emission and further treatment of gas. When the flux gas evaporated by heating in the welding furnace is extracted and enters the exhaust duct through the connecting frame, the large dust particles mixed in it will flow with the airflow. The sudden change in airflow direction will cause the large dust particles to settle at the bend and eventually accumulate at the bottom of the S-shaped pipe. Attached Figure Description

[0026] Figure 1 This is an isometric schematic diagram of the main overall structure in the embodiments of this application;

[0027] Figure 2 This is a partial exploded view of the ventilation duct structure, which is the main feature of this application embodiment;

[0028] Figure 3 This is a schematic diagram of the main limiting mechanism in the embodiments of this application.

[0029] Reference numerals: 1. Workbench; 2. Welding furnace; 3. Connecting frame; 31. Detection unit; 311. Pressure plate; 312. Sensor; 32. Detection port; 33. Guide surface; 4. Exhaust duct; 41. Straight pipe; 42. S-shaped pipe; 43. External pipe; 44. First connecting ring; 45. Second connecting ring; 46. Ash collection seat; 47. Third connecting ring; 48. Filter screen; 5. Limiting mechanism; 51. Connecting plate; 511. Waist-shaped groove; 52. Electric cylinder; 53. Fixing bolt; 54. Abutment plate. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail.

[0031] This application discloses a device for detecting air volume and collecting dust.

[0032] Reference Figure 1 A device for detecting air volume and collecting dust includes a workbench 1, on which a welding furnace 2 is fixedly installed. A connecting frame 3 and an exhaust pipe 4 are connected to the side wall of the welding furnace 2. The exhaust pipe 4 is located above the connecting frame 3 and is connected to the connecting frame 3. The end of the exhaust pipe 4 away from the connecting frame 3 is connected to an external environmental assessment device. When the flux evaporated by heating in the welding furnace 2 is extracted, the flux gas first passes through the connecting frame 3 connected to the welding furnace 2, and then is extracted into the exhaust pipe 4 along the airflow. Finally, it is discharged to the external environmental assessment device for filtration treatment through the exhaust pipe 4.

[0033] Reference Figure 2 and Figure 3 A detection unit 31 is detachably installed on the connecting frame 3. The detection unit 31 is used to detect the air volume flowing through the connecting frame 3. A limiting mechanism 5 is also provided on the workbench 1 to fix the detection unit 31 on the connecting frame 3. Through the cooperation of the detection unit 31 and the limiting mechanism 5, the air volume is stably and accurately monitored, which makes it convenient for staff to control the air volume or maintain the equipment in a timely manner.

[0034] Reference Figure 2 and Figure 3 The connecting frame 3 has a downward-facing detection port 32 on the side opposite to the exhaust duct 4. The detection unit 31 includes a pressure plate 311 for sealing the detection port 32 and a sensor 312 for detecting the air volume. The pressure plate 311 is rectangular and its cross-sectional area is larger than that of the detection port 32, so that the pressure plate 311 can press and seal the detection port 32 of the connecting frame 3. The sensor 312 is fixed to the edge of the pressure plate 311 by bolts, so as to detect the air volume passing through the connecting frame 3 in real time, which makes it easy for the staff to understand the air volume.

[0035] Reference Figure 2 and Figure 3 Two limit mechanisms 5 are symmetrically arranged to ensure that the detection unit 31 is more firmly fixed, to prevent the pressure plate 311 from shaking when the sensor 312 is performing detection, and to improve the accuracy of detection.

[0036] Reference Figure 1 and Figure 3 Each limiting mechanism 5 includes a connecting plate 51, an electric cylinder 52, a fixing bolt 53, and an abutment plate 54. The connecting plate 51 is L-shaped, and the horizontal section of the connecting plate 51 is fixed to the workbench 1 by bolts. The vertical section of the connecting plate 51 is provided with a waist-shaped groove 511. Multiple waist-shaped grooves 511 are provided. In this embodiment, two waist-shaped grooves 511 are provided at intervals.

[0037] Reference Figure 2 and Figure 3 There are two fixing bolts 53 corresponding to the waist-shaped grooves 511. Any fixing bolt 53 passes through the corresponding waist-shaped groove 511 and is threadedly connected to the electric cylinder 52, thereby stably fixing the electric cylinder 52 on the connecting plate 51. The operator can adjust the installation height of the electric cylinder 52 by adjusting the position of the fixing bolt 53 in the waist-shaped groove 511. At the same time, the waist-shaped groove 511 facilitates the operator to install and disassemble the electric cylinder 52.

[0038] Reference Figure 2 and Figure 3The piston rod of the electric cylinder 52 extends upward and is connected to the abutment plate 54. The abutment plate 54 and the pressure plate 311 form an abutment fit. An installation space for installing the pressure plate 311 is formed between the connecting frame 3 and the abutment plate 54. When the pressure plate 311 is inserted into the installation space for installation, the electric cylinder 52 drives the abutment plate 54 to rise until the upper surface of the abutment plate 54 is tightly abutted against the lower surface of the pressure plate 311. This allows the pressure plate 311 to stably seal the detection port 32 of the connecting frame 3, further ensuring the accuracy of the air volume detection by the sensor 312.

[0039] Reference Figure 2 and Figure 3 The inner wall of the connecting frame 3 is symmetrically provided with inclined guide surfaces 33. The two guide surfaces 33 expand outward in a trumpet shape. In this embodiment, the inclination angle of the guide surfaces 33 is 60°. The design of the guide surfaces 33 of the connecting frame 3 optimizes the airflow distribution, so that the gas in the connecting frame 3 can smoothly enter the exhaust pipe 4, avoiding excessive local resistance from affecting the accuracy of airflow detection and further improving the reliability of airflow detection.

[0040] Reference Figure 2 The exhaust duct 4 includes a straight pipe 41, an S-shaped pipe 42, and an external pipe 43. The S-shaped pipe 42 is horizontally arranged. A first connecting ring 44 is threaded between the straight pipe 41 and the S-shaped pipe 42 to connect the straight pipe 41 and the S-shaped pipe 42. A second connecting ring 45 is threaded between the S-shaped pipe 42 and the external pipe 43 to connect the S-shaped pipe 42 and the external pipe 43. That is, one end of the S-shaped pipe 42 is threaded to the straight pipe 41 through the first connecting ring 44, and the other end of the S-shaped pipe 42 is threaded to the external pipe 43 through the second connecting ring 45, so that the straight pipe 41, the S-shaped pipe 42, and the external pipe 43 are connected in sequence, and at the same time, it is convenient to disassemble and maintain the exhaust duct 4.

[0041] Reference Figure 2 The bottom of the S-shaped tube 42 is threaded with a dust collection seat 46. The bending angle of the S-shaped tube 42 is 90°. Due to the special shape of the S-shaped tube 42, the airflow will change direction when flowing inside the tube, generating a certain amount of turbulence and resistance. As a result, large dust particles have greater inertia and cannot follow the airflow to turn smoothly. They will gradually accumulate in the dust collection seat 46 at the bottom of the S-shaped tube 42. After working for a period of time, the staff can unscrew the dust collection seat 46 for cleaning and maintenance.

[0042] Reference Figure 2 Both the straight pipe 41 and the outer pipe 43 are vertically arranged, and the straight pipe 41 is connected to the connecting frame 3. The outer pipe 43 is connected to the external environmental assessment equipment. The S-shaped pipe 42 is composed of two U-shaped pipes in opposite directions. There is a third connecting ring 47 threaded between the two U-shaped pipes, so the two U-shaped pipes are connected through the third connecting ring 47. The ash collection seat 46 is set at the bottom of the U-shaped pipe near the outer pipe 43.

[0043] Reference Figure 2 The connection between the two U-shaped tubes is fitted with a filter screen 48 for filtering large dust particles, which further intercepts large dust particles in the airflow, ensuring that the content of large dust particles in the gas entering the external environmental assessment equipment is reduced, thus reducing the filtration burden on the environmental assessment equipment. At the same time, the detachable design of the U-shaped tubes makes it easy for staff to disassemble, clean or replace the filter screen 48, improving the convenience of maintenance.

[0044] The implementation principle of this application embodiment is as follows: During welding operations, the flux gas evaporated in the welding furnace 2 flows sequentially through the connecting frame 3, straight pipe 41, S-shaped pipe 42 and external pipe 43 under the action of the exhaust system, and finally enters the environmental impact assessment equipment. When the gas flows through the connecting frame 3, the sensor 312 on the pressure plate 311 detects the air volume data in real time. If the air volume exceeds the set threshold, the system automatically alarms and adjusts the exhaust power through the exhaust fan. At the same time, the filter screen 48 in the S-shaped pipe 42 intercepts large dust particles. Some dust particles settle into the dust collection seat 46 at the bend due to inertia, reducing the load on the environmental impact assessment equipment.

[0045] During maintenance, the contact plate 54 is driven to move down by the electric cylinder 52 to release the pressure on the pressure plate 311, so that the detection unit 31 can be disassembled for cleaning or the sensor 312 can be replaced; loosening the first connecting ring 44, the second connecting ring 45, and the third connecting ring 47 can separate the sections of the exhaust pipe 4 and clean the filter screen 48 and accumulated dust.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An air volume and dust collection detecting device characterized by comprising: The application relates to a welding furnace, which comprises a workbench (1) provided with a welding furnace (2), a connecting frame (3) and an exhaust duct (4) connected with external ring evaluation equipment, the exhaust duct (4) is connected with the connecting frame (3), the connecting frame (3) is detachably provided with a detection unit (31) for detecting the air volume of the connecting frame (3), and the workbench (1) is further provided with a limiting mechanism (5) for fixing the detection unit (31) on the connecting frame (3).

2. The device according to claim 1, wherein: The connecting frame (3) is provided with a detection port (32) on the side away from the exhaust duct (4), the detection unit (31) comprises a sealing plate (311) for sealing the detection port (32) and a sensor (312) for detecting the air volume, and the sensor (312) is arranged on the sealing plate (311).

3. The device according to claim 2, wherein: The limiting mechanism (5) is symmetrically provided with two limiting mechanisms (5), any one of the limiting mechanisms (5) comprises a connecting plate (51), an electric cylinder (52), a fixing bolt (53) for fixing the electric cylinder (52) on the connecting plate (51) and an abutting plate (54) for abutting with the sealing plate (311), any one of the connecting plates (51) is arranged on the workbench (1), and the piston rod of the electric cylinder (52) is connected with the abutting plate (54).

4. The device according to claim 3, wherein: The connecting plate (51) is provided with a waist-shaped groove (511), the fixing bolt (53) penetrates through the waist-shaped groove (511) and is threadedly connected with the electric cylinder (52).

5. The device of claim 1, wherein: The exhaust duct (4) comprises an S-shaped pipe (42), a straight pipe (41) for connecting the connecting frame (3) and an external connecting pipe (43) for connecting external ring evaluation equipment, one end of the S-shaped pipe (42) is connected with the straight pipe (41), and the other end of the S-shaped pipe (42) is connected with the external connecting pipe (43).

6. The device of claim 5, wherein: The first connecting ring (44) for connecting the straight pipe (41) and the S-shaped pipe (42) is threadedly connected between the straight pipe (41) and the S-shaped pipe (42), and the second connecting ring (45) for connecting the S-shaped pipe (42) and the external connecting pipe (43) is threadedly connected between the S-shaped pipe (42) and the external connecting pipe (43).

7. The device of claim 5, wherein: The S-shaped pipe (42) is internally provided with a filter screen (48) for filtering large-particle dust.

8. The device of claim 1, wherein: The connecting frame (3) is symmetrically provided with guide surfaces (33) for guiding the gas in the connecting frame (3) to smoothly enter the exhaust duct (4).

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