Environment monitoring device for casting workshop and monitoring method thereof

Abstract

The invention belongs to the technical field of casting workshop monitoring, and discloses an environment monitoring device for a casting workshop and a monitoring method thereof.The environment monitoring device comprises an air suction assembly, a processing box is fixedly installed at the rear end of the air suction assembly, an exhaust valve is fixedly communicated with the middle of the rear end of the processing box, and a three-way valve is fixedly communicated with the rear end of the exhaust valve; clamping grooves are formed in the left side and the right side, close to the rear end, of the treatment box, an HEPA filter screen is movably connected between the two clamping grooves in a clamped mode, a diffusion spray head is installed on the front face of the treatment box in an embedded mode, the diffusion spray head is located right in front of the HEPA filter screen, and the front end of the diffusion spray head communicates with the rear end of the air suction assembly. According to the device, the HEPA filter screen is automatically cleaned through the device, in other words, when air extraction is achieved, separation of air and dust is automatically completed, the dust is collected and then detected, the whole process is completed synchronously, the problem that the precision of a sensor is reduced due to the fact that a traditional device needs to extract air for a long time is solved, and the detection precision is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of foundry monitoring, and in particular relates to an environment monitoring device for a foundry and a monitoring method thereof. Background Art

[0002] The main equipment in the foundry workshop includes sand mixer, molding machine, core making machine, briquetting machine, sand dropping machine, shot blasting machine, etc. These equipment play their respective roles in the casting process and work together to complete the casting production tasks. Due to the limitations of the casting environment and casting raw materials, the entire casting process will cause a certain amount of dust in the foundry workshop. In order to avoid affecting the health of operators, environmental monitoring devices are often used to monitor the dust in the air.

[0003] The workshop environment monitoring device currently used is mainly composed of two parts: an exhaust device and a detection device. The exhaust device is used to absorb the air in the workshop for detection. After the air is absorbed, the air will be introduced into the detection device. The detection device is mainly composed of a sensor and a filter. After long-term use of this detection method, the dust-containing air will remain on the filter, causing the filter to be blocked, seriously affecting the air filtration and detection accuracy.

[0004] At the same time, when the above method is used for detection, only a channel for air exhaust is set up, and the dust in the air remains on the sensor or filter, resulting in the need for manual disassembly and cleaning after each detection, otherwise it will affect the accuracy of the next detection, and improvement is urgently needed. Summary of the invention

[0005] The object of the present invention is to provide an environmental monitoring device and a monitoring method for a foundry to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an environmental monitoring device for a foundry, comprising an air suction component, a processing box is fixedly installed at the rear end of the air suction component, an exhaust valve is fixedly connected to the middle of the rear end of the processing box, and a three-way valve is fixedly connected to the rear end of the exhaust valve, and a card slot is provided on both sides of the left and right sides of the processing box near the rear end, and a HEPA filter is movably connected between the two card slots, a diffusion nozzle is embedded and installed on the front of the processing box, the diffusion nozzle is located directly in front of the HEPA filter, and the front end of the diffusion nozzle is connected to the rear end of the air suction component, a self-cleaning component is provided on the front of the HEPA filter, and the self-cleaning component passes through the top of the processing box and is connected to the air suction component, a through slot is provided at the bottom end of the processing box, and the bottom end of the through slot is fixedly connected to a receiving box, a differential scale is provided at the bottom end of the receiving box, and the differential scale is located directly below the receiving box, an extension rod is fixedly connected to the right side of the differential scale, and a separation component is fixedly connected to the bottom end of the three-way valve, and the bottom end of the separation component is connected to the top of the extension rod.

[0007] Before using the device, ensure that there is no obstruction at the bottom of the air suction component, that is, the air suction component can directly absorb the air in the workshop. At the same time, the processing box can be hoisted at the top of the workshop, and the rear end of the three-way valve can be extended out of the wall for air discharge, completing the preparations before monitoring.

[0008] As a further technical solution of the present invention, the air suction assembly includes an air suction tank, a locking frame is installed at the bottom end of the air suction tank, and is connected to the front of the processing box through the locking frame, and the front end of the air suction tank is fixedly connected to a negative pressure pipe.

[0009] As a further technical solution of the present invention, the rear end of the air intake tank is fixedly connected to an exhaust port, the rear end of the exhaust port is connected to the front end of the diffusion nozzle, the middle part of the air intake tank is movably connected to a main shaft, and the outer side surface of the main shaft is fixedly sleeved with a turbine located inside the air intake tank.

[0010] As a further technical solution of the present invention, an extension seat is fixedly installed on one side of the air suction tank, a motor is fixedly installed on the top of the extension seat, and the output end of the motor is connected to the main shaft.

[0011] When extracting air in the workshop, the extension seat can be opened to drive the motor to rotate. At this time, the main shaft on one side of the motor will rotate accordingly, and drive the exhaust port to rotate. At this time, negative pressure can be generated through the negative pressure pipe, and the air in the workshop is sucked into the interior of the suction tank through the negative pressure pipe, and at the same time introduced into the interior of the diffusion nozzle through the exhaust port, and after diffusion by the diffusion nozzle, it enters the interior of the treatment box and is filtered through the HEPA filter to block the dust in the air to the front end of the HEPA filter, and the filtered air is discharged through the exhaust valve and the three-way valve.

[0012] As a further technical solution of the present invention, the self-cleaning component includes a first connecting rod, the first connecting rod is fixedly sleeved with the main shaft, and the end of the first connecting rod away from the main shaft is movably connected to the second connecting rod through a rotating shaft. The self-cleaning component also includes an extension frame, the bottom end of the extension frame passes through the top of the processing box and is movably sleeved with the processing box.

[0013] As a further technical solution of the present invention, the bottom end of the extension frame is fixedly connected to a cleaning brush located on the front side of the HEPA filter, the top end of the extension frame is fixedly connected to a mounting seat, the second connecting rod is movably connected to the mounting seat, and the back side of the cleaning brush is in contact with the front side of the HEPA filter.

[0014] At the same time, when the workshop air is extracted, the rotation of the main shaft can synchronously drive the first connecting rod to swing, and the second connecting rod will swing accordingly, and at the same time exert a force on the mounting seat. At this time, under the guidance of the extension frame and the processing box, the extension frame can be driven to reciprocate up and down relative to the processing box. At this time, the cleaning brush at the bottom will reciprocate up and down relative to the HEPA filter, and rely on friction to automatically clean the surface of the HEPA filter, completing the autonomous cleaning process.

[0015] By utilizing the rotation process of the main shaft during air extraction and the cooperation between the HEPA filter and the self-cleaning component, the surface of the HEPA filter can be automatically cleaned when air is extracted. The entire cleaning process and the air extraction process are completed simultaneously. There is no need for traditional devices to regularly clean the HEPA filter, which reduces the problem of filter clogging caused by long-term use and reduces the difficulty of maintenance.

[0016] As a further technical solution of the present invention, when the separation assembly is in an initial state, the differential balance is located at the highest point and the top of the differential balance is located inside the receiving box and completely blocks the bottom of the receiving box.

[0017] When the cleaning brush moves up and down relative to the HEPA filter, the dust filtered by the HEPA filter is scraped off from the surface of the HEPA filter. The scraped dust is discharged through the through slot at the bottom of the processing box and enters the receiving box below. Since the top of the differential scale is located inside the receiving box, when the dust collection per unit time is completed, all the dust is located at the top of the differential scale. The differential scale can be turned on to weigh the dust to complete the dust monitoring process in the air.

[0018] By utilizing the device's exhaust process during air monitoring and the device's autonomous cleaning process of the HEPA filter, the separation of air and dust is automatically completed when air is extracted, and the dust is collected and tested. The entire process is completed simultaneously, avoiding the problem of traditional devices requiring a long time to extract air, resulting in a decrease in sensor accuracy, and significantly improving detection accuracy.

[0019] As a further technical solution of the present invention, the separation component includes a temporary storage tube, the internal movably sleeved with a piston plate, the bottom end of the piston plate is fixedly connected to a piston rod inside the temporary storage tube, the bottom end of the piston rod passes through the bottom end of the temporary storage tube and is connected to the top end of the extension rod.

[0020] As a further technical solution of the present invention, a return spring is movably sleeved on the outer side of the piston rod, and the upper and lower ends of the return spring are respectively connected to the bottom end of the piston plate and the bottom end of the inner cavity of the temporary storage tube.

[0021] After completing a dust monitoring in the air, the valve at the rear end of the three-way valve can be closed, and the valve at the bottom end of the three-way valve can be opened at the same time. At this time, air will enter the interior of the temporary storage tube and exert downward pressure on the piston plate. At this time, the reset spring can be compressed and drive the piston rod to move downward. At this time, the piston rod exerts pressure on the extension rod and drives the differential scale to move downward. When the top end of the differential scale leaves the interior of the receiving box, the top end of the differential scale is no longer blocked and its surface can be cleaned.

[0022] By utilizing the air extracted during monitoring and the cooperation between the separation component and the differential scale, when the device is normally monitoring, the top of the differential scale is located inside the receiving box and normally receives the dust. After the monitoring is completed, the differential scale can be automatically moved down to quickly clean the surface of the differential scale, avoiding the problem of traditional devices needing to be disassembled for cleaning, thereby improving the ease of use of the device.

[0023] A monitoring method for an environmental monitoring device for a foundry, comprising the following steps:

[0024] S1: Before use, the bottom end of the negative pressure pipe 102 needs to be passed through the ceiling, the processing box 4 needs to be hoisted on the top of the workshop, and the rear end of the three-way valve 9 needs to be passed through the wall to connect with the external environment to complete the preparation before air inhalation;

[0025] S2: During monitoring, the motor 3 is turned on to drive the main shaft 103 to rotate and drive the turbine 105 to rotate, and negative pressure is generated inside the air suction tank 101, and the workshop air is sucked through the negative pressure pipe 102. The sucked air enters the interior of the diffusion nozzle 5 through the air suction tank 101 and the exhaust port 104, and diffuses inside the treatment box 4. The diffused air can be filtered through the HEPA filter 6, and the filtered air is discharged through the exhaust valve 8 and the rear end of the three-way valve 9;

[0026] S3: At the same time, the main shaft 103 rotates to drive the first connecting rod 701 to swing, and the second connecting rod 702 swings synchronously, and drives the extension frame 704 to move up and down reciprocatingly, and finally drives the cleaning brush 705 to move up and down reciprocatingly relative to the HEPA filter 6, and scrapes off the dust on the surface of the HEPA filter 6. The scraped dust then passes through the bottom of the processing box 4 into the interior of the receiving box 10, and finally enters the top of the differential scale 12;

[0027] S4: The differential scale 12 can be turned on to weigh the dust scraped off per unit time to obtain the dust content in the air and complete the monitoring of air dust;

[0028] S5: After the monitoring is completed, the valve at the bottom of the three-way valve 9 can be opened to introduce air into the temporary storage tube 111. At this time, the piston plate 112 and the piston rod 113 move downward and drive the differential balance 12 to move downward. At this time, the dust on the surface of the differential balance 12 can be cleaned. After cleaning, the air inside the temporary storage tube 111 can be discharged.

[0029] The beneficial effects of the present invention are as follows:

[0030] (1) The present invention utilizes the air extraction process of the device during air monitoring and the autonomous cleaning process of the device on the HEPA filter. That is, when air is extracted, the air and dust are automatically separated, and the dust is collected and then tested. The whole process is completed synchronously, avoiding the problem that the traditional device needs to extract air for a long time, resulting in a decrease in sensor accuracy, and significantly improving the detection accuracy.

[0031] (2) The present invention utilizes the air extracted during monitoring and the cooperation between the separation component and the differential scale, so that when the device is normally monitoring, the top of the differential scale is located inside the receiving box and normally receives dust. After the monitoring is completed, the differential scale can be automatically moved down to quickly clean the surface of the differential scale, avoiding the problem of traditional devices needing to be disassembled for cleaning, thereby improving the ease of use of the device.

[0032] (3) The present invention utilizes the rotation process of the main shaft during air extraction and the cooperation between the HEPA filter and the self-cleaning component, so that when air is extracted, the surface of the HEPA filter can be automatically cleaned. The entire cleaning process and the air extraction process are completed synchronously. There is no need for traditional devices to regularly clean the HEPA filter, which reduces the problem of filter clogging caused by long-term use and reduces the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2It is a schematic diagram of the coordination of the air intake assembly and the extension seat structure of the present invention;

[0035] Figure 3 A separate cross-sectional schematic diagram of the internal structure of the getter assembly of the present invention;

[0036] Figure 4 It is a schematic diagram of the coordination of the treatment box, the HEPA filter and the self-cleaning component structure of the present invention;

[0037] Figure 5 A separate schematic diagram of the self-cleaning component structure of the present invention;

[0038] Figure 6 It is an exploded schematic diagram of the treatment box and the HEPA filter of the present invention;

[0039] Figure 7 It is a schematic diagram of the coordination of the receiving box and the separation component structure of the present invention;

[0040] Figure 8 It is a cross-sectional schematic diagram of the internal structure of the separation component of the present invention.

[0041] In the figure: 1. Suction assembly; 101. Suction tank; 102. Negative pressure pipe; 103. Main shaft; 104. Exhaust port; 105. Turbine; 2. Extension seat; 3. Motor; 4. Processing box; 5. Diffusion nozzle; 6. HEPA filter; 7. Self-cleaning assembly; 701. First connecting rod; 702. Second connecting rod; 703. Mounting seat; 704. Extension rack; 705. Cleaning brush; 8. Exhaust valve; 9. Three-way valve; 10. Receiving box; 11. Separation assembly; 111. Temporary storage tube; 112. Piston plate; 113. Piston rod; 114. Reset spring; 12. Differential balance; 13. Slot; 14. Extension rod. DETAILED DESCRIPTION

[0042] 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 described embodiments 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.

[0043] like Figures 1 to 8As shown, in the embodiment of the present invention, an environmental monitoring device for a foundry comprises an air suction component 1, a processing box 4 is fixedly installed at the rear end of the air suction component 1, an exhaust valve 8 is fixedly connected to the middle of the rear end of the processing box 4, and a three-way valve 9 is fixedly connected to the rear end of the exhaust valve 8, and a card slot 13 is provided on both sides of the left and right sides of the processing box 4 near the rear end, and a HEPA filter 6 is movably connected between the two card slots 13, and a diffusion nozzle 5 is embedded and installed on the front of the processing box 4, and the diffusion nozzle 5 is located in front of the HEPA filter 6 and the front end of the diffusion nozzle 5 is connected to the air suction component 1. The rear end of the component 1 is connected, and a self-cleaning component 7 is provided on the front of the HEPA filter 6. The self-cleaning component 7 passes through the top of the processing box 4 and is connected to the air intake component 1. A through groove is provided at the bottom end of the processing box 4, and the bottom end of the through groove is fixedly connected to a receiving box 10. A differential balance 12 is provided at the bottom end of the receiving box 10. The differential balance 12 is located directly below the receiving box 10. An extension rod 14 is fixedly connected to the right side of the differential balance 12. The bottom end of the three-way valve 9 is fixedly connected to a separation component 11, and the bottom end of the separation component 11 is connected to the top of the extension rod 14.

[0044] Before using the device, ensure that the bottom end of the air suction component 1 is unobstructed, that is, the air suction component 1 can directly absorb the air in the workshop. At the same time, the processing box 4 can be hoisted at the top of the workshop, and the rear end of the three-way valve 9 can be extended out of the wall for air discharge, completing the preparation before monitoring.

[0045] like Figure 1 and Figure 2 as well as Figure 3 As shown, the air intake assembly 1 includes an air intake tank 101, a locking frame is installed at the bottom end of the air intake tank 101, and is connected to the front of the processing box 4 through the locking frame, the front end of the air intake tank 101 is fixedly connected to a negative pressure pipe 102, the rear end of the air intake tank 101 is fixedly connected to an exhaust port 104, the rear end of the exhaust port 104 is connected to the front end of the diffusion nozzle 5, the middle part of the air intake tank 101 is movably connected to a main shaft 103, the outer side surface of the main shaft 103 is fixedly sleeved with a turbine 105 located inside the air intake tank 101, an extension seat 2 is fixedly installed on one side of the air intake tank 101, a motor 3 is fixedly installed on the top of the extension seat 2, and the output end of the motor 3 is connected to the main shaft 103.

[0046] When extracting air in the workshop, the extension seat 2 can be opened to drive the motor 3 to rotate. At this time, the main shaft 103 on one side of the motor 3 rotates accordingly, and drives the exhaust port 104 to rotate. At this time, negative pressure can be generated through the negative pressure pipe 102, and the air in the workshop is sucked into the interior of the suction tank 101 through the negative pressure pipe 102, and at the same time introduced into the interior of the diffusion nozzle 5 through the exhaust port 104, and after diffusion by the diffusion nozzle 5, it enters the interior of the treatment box 4, and is filtered through the HEPA filter 6 to block the dust in the air to the front end of the HEPA filter 6, and the filtered air is discharged through the exhaust valve 8 and the three-way valve 9.

[0047] like Figure 1 and Figure 4 as well as Figure 5 As shown, the self-cleaning component 7 includes a first connecting rod 701, which is fixedly connected to the main shaft 103, and the end of the first connecting rod 701 away from the main shaft 103 is movably connected to the second connecting rod 702 through a rotating shaft. The self-cleaning component 7 also includes an extension frame 704, the bottom end of the extension frame 704 passes through the top of the processing box 4 and is movably connected to the processing box 4, the bottom end of the extension frame 704 is fixedly connected to a cleaning brush 705 located on the front side of the HEPA filter 6, the top of the extension frame 704 is fixedly connected to a mounting seat 703, the second connecting rod 702 and the mounting seat 703 are movably connected, and the back side of the cleaning brush 705 is in contact with the front side of the HEPA filter 6.

[0048] At the same time, when the workshop air is extracted, the rotation of the main shaft 103 can synchronously drive the first connecting rod 701 to swing, and the second connecting rod 702 will swing accordingly, and at the same time, a force will be applied to the mounting seat 703. At this time, under the guidance of the extension frame 704 and the processing box 4, the extension frame 704 can be driven to reciprocate up and down relative to the processing box 4. At this time, the cleaning brush 705 at the bottom will reciprocate up and down relative to the HEPA filter 6, and rely on friction to automatically clean the surface of the HEPA filter 6, completing the autonomous cleaning process.

[0049] By utilizing the rotation process of the main shaft 103 when air is extracted, and utilizing the cooperation between the HEPA filter 6 and the self-cleaning component 7, the surface of the HEPA filter 6 can be automatically cleaned when air is extracted. The entire cleaning process and the air extraction process are completed synchronously. There is no need for traditional devices to regularly clean the HEPA filter 6, which reduces the problem of filter clogging caused by long-term use and reduces the difficulty of maintenance.

[0050] like Figure 4 and Figure 6 as well as Figure 7 As shown, when the separation assembly 11 is in the initial state, the differential balance 12 is located at the highest point and the top end of the differential balance 12 is located inside the receiving box 10 and completely blocks the bottom end of the receiving box 10 .

[0051] Embodiment: When the cleaning brush 705 moves up and down relative to the HEPA filter 6, the dust filtered by the HEPA filter 6 is scraped off from the surface of the HEPA filter 6, and the scraped dust is discharged through the through groove at the bottom of the processing box 4 and enters the receiving box 10 below. Since the top of the differential scale 12 is located inside the receiving box 10, when the dust collection per unit time is completed, all the dust is located at the top of the differential scale 12, and the differential scale 12 can be turned on to weigh the dust to complete the dust monitoring process in the air.

[0052] By utilizing the exhaust process of the device during air monitoring and the autonomous cleaning process of the HEPA filter 6, the separation of air and dust is automatically completed when air is extracted, and the dust is collected and tested. The whole process is completed synchronously, avoiding the problem of traditional devices requiring long time to extract air, resulting in a decrease in sensor accuracy, and significantly improving the detection accuracy.

[0053] like Figure 1 and Figure 4 as well as Figure 7 and Figure 8 As shown, the separation component 11 includes a temporary storage tube 111, and a piston plate 112 is movably sleeved inside the temporary storage tube 111. The bottom end of the piston plate 112 is fixedly connected to a piston rod 113 inside the temporary storage tube 111. The bottom end of the piston rod 113 passes through the bottom end of the temporary storage tube 111 and is connected to the top end of the extension rod 14. The outer side surface of the piston rod 113 is movably sleeved with a return spring 114, and the upper and lower ends of the return spring 114 are respectively connected to the bottom end of the piston plate 112 and the bottom end of the inner cavity of the temporary storage tube 111.

[0054] Embodiment: After completing a dust monitoring in the air, the valve at the rear end of the three-way valve 9 can be closed, and the valve at the bottom end of the three-way valve 9 can be opened at the same time. At this time, air enters the interior of the temporary storage tube 111 and exerts downward pressure on the piston plate 112. At this time, the return spring 114 can be compressed and drive the piston rod 113 to move downward. At this time, the piston rod 113 exerts pressure on the extension rod 14 and drives the differential balance 12 to move downward. When the top end of the differential balance 12 leaves the interior of the receiving box 10, the top end of the differential balance 12 is no longer blocked and its surface can be cleaned.

[0055] By utilizing the air extracted during monitoring and utilizing the cooperation between the separation component 11 and the differential scale 12, when the device is performing normal monitoring, the top end of the differential scale 12 is located inside the receiving box 10 and normally receives the dust. After the monitoring is completed, the differential scale 12 can be automatically moved downward to quickly clean the surface of the differential scale 12, thereby avoiding the problem of traditional devices needing to be disassembled for cleaning and improving the ease of use of the device.

[0056] A monitoring method for an environmental monitoring device for a foundry, comprising the following steps:

[0057] S1: Before use, the bottom end of the negative pressure pipe 102 needs to be passed through the ceiling, the processing box 4 needs to be hoisted on the top of the workshop, and the rear end of the three-way valve 9 needs to be passed through the wall to connect with the external environment to complete the preparation before air inhalation;

[0058] S2: During monitoring, the motor 3 is turned on to drive the main shaft 103 to rotate and drive the turbine 105 to rotate, and negative pressure is generated inside the air suction tank 101, and the workshop air is sucked through the negative pressure pipe 102. The sucked air enters the interior of the diffusion nozzle 5 through the air suction tank 101 and the exhaust port 104, and diffuses inside the treatment box 4. The diffused air can be filtered through the HEPA filter 6, and the filtered air is discharged through the exhaust valve 8 and the rear end of the three-way valve 9;

[0059] S3: At the same time, the main shaft 103 rotates to drive the first connecting rod 701 to swing, and the second connecting rod 702 swings synchronously, and drives the extension frame 704 to move up and down reciprocatingly, and finally drives the cleaning brush 705 to move up and down reciprocatingly relative to the HEPA filter 6, and scrapes off the dust on the surface of the HEPA filter 6. The scraped dust then passes through the bottom of the processing box 4 into the interior of the receiving box 10, and finally enters the top of the differential scale 12;

[0060] S4: The differential scale 12 can be turned on to weigh the dust scraped off per unit time to obtain the dust content in the air and complete the monitoring of air dust;

[0061] S5: After the monitoring is completed, the valve at the bottom of the three-way valve 9 can be opened to introduce air into the temporary storage tube 111. At this time, the piston plate 112 and the piston rod 113 move downward and drive the differential balance 12 to move downward. At this time, the dust on the surface of the differential balance 12 can be cleaned. After cleaning, the air inside the temporary storage tube 111 can be discharged.

[0062] 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 embodiments 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. An environmental monitoring device for a foundry, comprising an air suction assembly (1), characterized in that: A processing box (4) is fixedly installed at the rear end of the air intake component (1), an exhaust valve (8) is fixedly connected to the middle of the rear end of the processing box (4), and a three-way valve (9) is fixedly connected to the rear end of the exhaust valve (8). A card slot (13) is provided on both left and right sides of the processing box (4) near the rear end, and a HEPA filter (6) is movably connected between the two card slots (13). A diffusion nozzle (5) is embedded and installed on the front of the processing box (4), and the diffusion nozzle (5) is located directly in front of the HEPA filter (6) and the front end of the diffusion nozzle (5) is connected to the rear end of the air intake component (1). The HEPA filter (6) is connected to the rear end of the air intake component (1). A self-cleaning component (7) is provided on the front of the processing box (6), the self-cleaning component (7) passes through the top of the processing box (4) and is connected to the suction component (1), the bottom of the processing box (4) is provided with a through groove and the bottom of the through groove is fixedly connected to a receiving box (10), the bottom of the receiving box (10) is provided with a differential balance (12), the differential balance (12) is located directly below the receiving box (10), the right side of the differential balance (12) is fixedly connected to an extension rod (14), the bottom end of the three-way valve (9) is fixedly connected to a separation component (11), and the bottom end of the separation component (11) is connected to the top of the extension rod (14).

2. The foundry environment monitoring device according to claim 1, characterized in that: The air suction assembly (1) comprises an air suction tank (101), a locking frame is installed at the bottom end of the air suction tank (101), and is connected to the front side of the processing box (4) through the locking frame, and the front end of the air suction tank (101) is fixedly connected to a negative pressure pipe (102).

3. The foundry environment monitoring device according to claim 2, characterized in that: The rear end of the air intake tank (101) is fixedly connected to an exhaust port (104), and the rear end of the exhaust port (104) is connected to the front end of the diffusion nozzle (5). The middle part of the air intake tank (101) is movably connected to a main shaft (103), and the outer side surface of the main shaft (103) is fixedly sleeved with a turbine (105) located inside the air intake tank (101).

4. The foundry environment monitoring device according to claim 3, characterized in that: An extension seat (2) is fixedly mounted on one side of the air suction tank (101), a motor (3) is fixedly mounted on the top of the extension seat (2), and an output end of the motor (3) is connected to the main shaft (103).

5. The foundry environment monitoring device according to claim 4, characterized in that: The self-cleaning component (7) includes a first connecting rod (701) which is fixedly sleeved with the main shaft (103); one end of the first connecting rod (701) away from the main shaft (103) is movably connected to a second connecting rod (702) via a rotating shaft; the self-cleaning component (7) also includes an extension frame (704); the bottom end of the extension frame (704) passes through the top end of the processing box (4) and is movably sleeved with the processing box (4).

6. The foundry environment monitoring device according to claim 5, characterized in that: The bottom end of the extension frame (704) is fixedly connected to a cleaning brush (705) located on the front side of the HEPA filter (6); the top end of the extension frame (704) is fixedly connected to a mounting seat (703); the second connecting rod (702) is movably connected to the mounting seat (703); and the back side of the cleaning brush (705) is in contact with the front side of the HEPA filter (6).

7. The foundry environment monitoring device according to claim 6, characterized in that: When the separation component (11) is in an initial state, the differential balance (12) is located at the highest point and the top end of the differential balance (12) is located inside the receiving box (10) and completely blocks the bottom end of the receiving box (10).

8. The foundry environment monitoring device according to claim 7, characterized in that: The separation component (11) comprises a temporary storage tube (111), the interior of the temporary storage tube (111) is movably sleeved with a piston plate (112), the bottom end of the piston plate (112) is fixedly connected to a piston rod (113) inside the temporary storage tube (111), and the bottom end of the piston rod (113) passes through the bottom end of the temporary storage tube (111) and is connected to the top end of the extension rod (14).

9. The foundry environment monitoring device according to claim 8, characterized in that: The outer side surface of the piston rod (113) is movably sleeved with a return spring (114), and the upper and lower ends of the return spring (114) are respectively connected to the bottom end of the piston plate (112) and the bottom end of the inner cavity of the temporary storage tube (111).

10. The monitoring method of a foundry environment monitoring device according to claim 9, characterized in that: The following steps are involved: S1: Before use, the bottom end of the negative pressure pipe (102) needs to be passed through the ceiling, the processing box (4) needs to be hoisted on the top of the workshop, and the rear end of the three-way valve (9) needs to be passed through the wall to connect with the external environment, completing the preparation before air inhalation; S2: During monitoring, the motor (3) is turned on to drive the main shaft (103) to rotate and drive the turbine (105) to rotate, and negative pressure is generated inside the air suction tank (101), and the workshop air is sucked through the negative pressure pipe (102). The sucked air enters the interior of the diffusion nozzle (5) through the air suction tank (101) and the exhaust port (104), and is diffused inside the processing box (4). The diffused air can be filtered through the HEPA filter (6), and the filtered air is discharged through the exhaust valve (8) and the rear end of the three-way valve (9); S3: At the same time, the main shaft (103) rotates to drive the first connecting rod (701) to swing, and at the same time, the second connecting rod (702) swings synchronously, and drives the extension frame (704) to move up and down reciprocatingly, and finally drives the cleaning brush (705) to move up and down reciprocatingly relative to the HEPA filter (6), so as to scrape off the dust on the surface of the HEPA filter (6), and the scraped dust then passes through the bottom of the processing box (4) into the interior of the receiving box (10), and finally enters the top of the differential scale (12); S4: The differential scale (12) can be turned on to weigh the dust scraped off per unit time to obtain the dust content in the air and complete the monitoring of air dust; S5: After the monitoring is completed, the valve at the bottom of the three-way valve (9) can be opened to introduce air into the interior of the temporary storage tube (111). At this time, the piston plate (112) and the piston rod (113) move downward and drive the differential balance (12) to move downward. At this time, the dust on the surface of the differential balance (12) can be cleaned. After the cleaning is completed, the air inside the temporary storage tube (111) can be discharged.

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