An exhaust gas filter detection device

Abstract

This utility model provides a waste gas filtration detection device, including an electronic scale. A weighing platform is installed on the top of the electronic scale, and a cover is fitted on the weighing platform. A column is installed at the middle of the upper surface of the cover, and a cylinder for installation on the exhaust outlet of a waste gas generating device is installed at the upper end of the column. A detachable filter screen for filtering particulate matter is installed at one end of the cylinder. A support plate is installed on the side of the cover surface near the filter screen, and a support screw is threaded to the end of the support plate away from the cover. This utility model has the following advantages: it eliminates the need to repeatedly transfer the filter screen between the waste gas generating device and the electronic scale, thus improving the accuracy of waste gas filtration detection.

Description

Technical Field

[0001] This utility model is a waste gas filtration detection device, belonging to the field of filtration detection. Background Technology

[0002] Exhaust gas filtration testing is a crucial step in ensuring that pollution sources such as industrial emissions and vehicle exhaust meet environmental standards after treatment. Its purpose is to evaluate the performance of filtration devices, monitor filtration efficiency, and ensure that emissions comply with relevant regulations. The gravimetric method is a commonly used approach for testing the filtration efficiency of exhaust gases containing particulate matter. A cylinder with a filter screen is placed on an electronic scale. The weight of the cylinder and filter screen (forming the structure with unfiltered exhaust gas) is measured, followed by the weight of the cylinder and filter screen (forming the structure with filtered exhaust gas). This provides data to support the filter's filtration efficiency. However, this method requires repeated transfer between the exhaust gas generating equipment and the scale. During this transfer, vibrations can cause particles adhering to the filter screen to fall off, introducing errors into the measurement data and affecting the accuracy of the exhaust gas filtration test. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an exhaust gas filtration detection device to solve the problems mentioned in the background technology. This utility model eliminates the need to repeatedly transfer the filter screen between the exhaust gas generating device and the electronic scale, thereby improving the accuracy of exhaust gas filtration detection.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a waste gas filtration and detection device, including an electronic scale, a weighing platform installed on the top of the electronic scale, a cover fitted on the weighing platform, a column rod installed at the middle of the upper surface of the cover, a cylinder for installation on the exhaust outlet of a waste gas generating device installed at the upper end of the column rod, a detachable filter screen for filtering particulate matter installed at one end of the cylinder, a support plate installed on the side of the cover surface near the filter screen, and a support screw threaded to the end of the support plate away from the cover.

[0005] Furthermore, a first connecting ring is fitted onto one end of the cylinder near the filter screen and is fixed to the cylinder. The filter screen fits into the first connecting ring. A pressure ring is provided on the side of the filter screen away from the first connecting ring. The pressure ring is connected to the first connecting ring by multiple bolts.

[0006] Furthermore, a second connecting ring for connecting to the exhaust outlet of the waste gas generating device is installed at the end of the cylinder away from the first connecting ring, and the first connecting ring and the second connecting ring have the same specifications.

[0007] Furthermore, a sealing gasket is provided between the first connecting ring and the filter screen, and the bolt passes through the sealing gasket.

[0008] Furthermore, a vertical hole is provided on the upper surface of the support plate away from the cover. A straight cylinder is installed in the vertical hole, and a circular nut is installed in the middle of the straight cylinder. The support screw is threadedly connected to the circular nut. Both ends of the support screw extend to the outside of the straight cylinder. A blocking ring is provided on both sides of the circular nut along the length of the support screw. The blocking ring is sleeved on the support screw and connected and fixed to the support screw. The outer diameter of the blocking ring is the same as the inner diameter of the straight cylinder, and the blocking ring slides in contact with the straight cylinder.

[0009] Furthermore, a knob rod is installed at the upper end of the support screw, and the knob rod is arranged perpendicular to the support screw.

[0010] Furthermore, the lower end of the support screw is threadedly connected to a threaded sleeve, and a base is installed at the lower end of the threaded sleeve. The threaded sleeve and the base are arranged concentrically.

[0011] Furthermore, an elongated opening is provided on the upper surface of the support plate, and the elongated opening is arranged along the length direction of the support plate.

[0012] The beneficial effects of this utility model are: 1. The cylinder is mounted on the scale platform of the electronic scale via a column rod and can be directly connected to the air outlet of the exhaust gas generating equipment. This ensures that the filter screen remains fixed on the electronic scale during the testing process, eliminating the need for repeated transfer between the exhaust gas equipment and the electronic scale. The particles attached to the filter screen are not affected by the transfer vibration during the testing process, ensuring that the weight difference before and after filtration measured by the electronic scale accurately reflects the amount of particles retained and avoiding measurement errors caused by particles falling off.

[0013] 2. The support plate is fixed to the ground or equipment by the support screw. The height of the support screw can be adjusted by the knob. The base and threaded sleeve enhance the support stability, prevent the cylinder from shaking during the flow of exhaust gas, and improve the stability of the structure.

[0014] 3. The threaded connection between the round nut and the support screw is hidden in the closed space formed by the straight cylinder and the two retaining rings. Thus, when the support screw is turned, the retaining rings do not affect the adjustment of the support screw and prevent particulate matter from adhering to the support screw and affecting the turning of the support screw. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a waste gas filtration and testing device according to the present invention; Figure 2 This is another perspective view of the exhaust gas filtration and detection device of this utility model; Figure 3This is a cross-sectional perspective view of a waste gas filtration and detection device according to the present invention; Figure 4 This is an exploded structural diagram of a waste gas filtration and detection device according to the present invention; In the diagram: 1-Electronic scale, 2-Cover, 3-Column rod, 4-Second connecting ring, 5-Cylinder, 6-First connecting ring, 7-Pressure ring, 8-Filter screen, 9-Support plate, 10-Oblong opening, 11-Knob rod, 12-Support screw, 13-Straight cylinder, 14-Threaded sleeve, 15-Base, 16-Round nut, 17-Blocking ring, 18-Vertical hole, 19-Sealing washer, 20-Scale platform. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] Please see Figures 1-4 This utility model provides a technical solution: a waste gas filtration testing device, including an electronic scale 1, a weighing platform 20 installed on the top of the electronic scale 1, a cover 2 fitted on the weighing platform 20, a column rod 3 installed at the middle of the upper surface of the cover 2, a cylinder 5 for installation on the air outlet of the waste gas generating equipment installed at the upper end of the column rod 3, a detachable filter screen 8 for filtering particulate matter installed at one end of the cylinder 5, the cylinder 5 is installed on the weighing platform 20 of the electronic scale 1 through the column rod 3, and can be directly connected to the air outlet of the waste gas generating equipment, so that the filter screen 8 is always fixed on the electronic scale 1 during the testing process, without the need for reciprocating transfer between the waste gas generating equipment and the electronic scale 1, and the particulate matter attached to the filter screen 8 is not affected by the transfer vibration during the testing process, ensuring that the weight difference before and after filtration measured by the electronic scale 1 truly reflects the amount of particulate matter retained, and avoiding measurement errors caused by particulate matter falling.

[0018] See Figures 1-4 A first connecting ring 6 is fitted onto one end of the cylinder 5 near the filter screen 8 and is fixed to the cylinder 5. A second connecting ring 4 is installed on the other end of the cylinder 5 away from the first connecting ring 6 for connecting to the exhaust outlet of the exhaust gas generating equipment. The first connecting ring 6 and the second connecting ring 4 are of the same specifications. The filter screen 8 is fitted to the first connecting ring 6. A pressure ring 7 is provided on the side of the filter screen 8 away from the first connecting ring 6. The pressure ring 7 is connected to the first connecting ring 6 by multiple bolts. A sealing gasket 19 is provided between the first connecting ring 6 and the filter screen 8. The bolts pass through the sealing gasket 19. The sealing gasket 19 improves the sealing between the filter screen 8 and the first connecting ring 6. The pressure ring 7 and the first connecting ring 6 cooperate with each other to restrict the position of the filter screen 8.

[0019] See Figures 1-4A support plate 9 is installed on the side of the cover 2 near the filter screen 8. An elongated opening 10 is provided on the upper surface of the support plate 9, which is arranged along the length of the support plate 9. A vertical hole 18 is provided on the side of the upper surface of the support plate 9 away from the cover 2. A straight cylinder 13 is installed in the vertical hole 18. A round nut 16 is installed in the middle of the straight cylinder 13. A support screw 12 is threadedly connected to the round nut 16. Both ends of the support screw 12 extend to the outside of the straight cylinder 13. A knob rod 11 is installed on the upper end of the support screw 12. The knob rod 11 is arranged perpendicular to the support screw 12. A threaded sleeve 14 is threadedly connected to the lower end of the support screw 12. A base plate 15 is installed on the lower end of the threaded sleeve 14. The threaded sleeve 14 and the base plate 15 are arranged concentrically. The support plate 9 is fixed to the ground or equipment by the support screw 12. The knob rod 11 can adjust the height of the support screw 12. The base plate 15 and the threaded sleeve 14 enhance the support stability, prevent the cylinder 5 from shaking during the flow of exhaust gas, and improve the stability of the structure.

[0020] See Figure 3 and Figure 4 The circular nut 16 has a retaining ring 17 on both sides along the length of the support screw 12. The retaining ring 17 is sleeved on the support screw 12 and connected and fixed to the support screw 12. The outer diameter of the retaining ring 17 is the same as the inner diameter of the straight cylinder 13. The retaining ring 17 slides in contact with the straight cylinder 13, so that the threaded connection between the circular nut 16 and the support screw 12 is hidden in the closed space formed by the straight cylinder 13 and the two retaining rings 17. Thus, when the support screw 12 is turned, the retaining ring 17 prevents particulate matter from adhering to the support screw 12 and affecting the turning of the support screw 12 without affecting the adjustment of the support screw 12.

[0021] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An exhaust gas filter detection device comprising an electronic scale (1), characterized in that: The electronic scale (1) is equipped with a weighing platform (20) on top. A cover (2) is fitted on the weighing platform (20). A column (3) is installed in the middle of the upper surface of the cover (2). A cylinder (5) for installation on the exhaust end of the exhaust gas generating equipment is installed at the upper end of the column (3). A detachable filter screen (8) for filtering particulate matter is installed at one end of the cylinder (5). A support plate (9) is installed on the side of the cover (2) near the filter screen (8). A support screw (12) is threaded to the end of the support plate (9) away from the cover (2).

2. An exhaust gas filter detection apparatus according to claim 1, characterized by: The cylinder (5) is fitted with a first connecting ring (6) at one end near the filter screen (8), and the filter screen (8) is attached to the first connecting ring (6). A pressure ring (7) is provided on the side of the filter screen (8) away from the first connecting ring (6). The pressure ring (7) is connected to the first connecting ring (6) by multiple bolts.

3. An exhaust gas filter detection apparatus according to claim 2, characterized in that: The cylinder (5) is equipped with a second connecting ring (4) at the end away from the first connecting ring (6) for connecting the exhaust end of the exhaust gas generating device. The first connecting ring (6) and the second connecting ring (4) have the same specifications.

4. An exhaust gas filter detection apparatus according to claim 2, characterized by: A sealing gasket (19) is provided between the first connecting ring (6) and the filter screen (8), and the bolt passes through the sealing gasket (19).

5. An exhaust gas filter detection apparatus according to claim 1, characterized by: A vertical hole (18) is provided on the side of the upper surface of the support plate (9) away from the cover (2). A straight cylinder (13) is installed in the vertical hole (18). A round nut (16) is installed in the middle of the straight cylinder (13). The support screw (12) is threadedly connected to the round nut (16). Both ends of the support screw (12) extend to the outside of the straight cylinder (13). The round nut (16) is provided with a blocking ring (17) on both sides along the length direction of the support screw (12). The blocking ring (17) is sleeved on the support screw (12) and connected and fixed to the support screw (12). The outer diameter of the blocking ring (17) is the same as the inner diameter of the straight cylinder (13). The blocking ring (17) slides in contact with the straight cylinder (13).

6. An exhaust gas filter detection apparatus according to claim 5, characterized in that: A knob rod (11) is installed on the upper end of the support screw (12), and the knob rod (11) is arranged perpendicular to the support screw (12).

7. An exhaust gas filter detection apparatus according to claim 5, characterized by: The lower end of the support screw (12) is threadedly connected to a threaded sleeve (14), and a base plate (15) is installed at the lower end of the threaded sleeve (14). The threaded sleeve (14) and the base plate (15) are arranged concentrically.

8. An exhaust gas filter detection apparatus according to claim 1, characterized by: The upper surface of the support plate (9) is provided with an elongated opening (10), which is arranged along the length of the support plate (9).

Images