Quick-assembly filter efficiency detection device

Abstract

The utility model discloses a fast-assembly type filter efficiency detection device, which relates to the technical field of filter efficiency detection devices and comprises an upper fixing assembly, a rotary fixing part and a lower fixing assembly which are sequentially arranged from top to bottom, and the upper fixing assembly comprises an upper abutting plate and a cylinder fixedly arranged at the bottom end of the upper abutting plate. The rotary fixing part comprises a connecting rod and a handle fixedly connected to the outer wall of the connecting rod, the lower fixing assembly comprises a lower abutting plate and an inner threaded cylinder fixedly connected to the lower abutting plate, and the outer wall of the connecting rod located below the limiting ring is in threaded connection with the inner wall of the inner threaded cylinder; the outer wall of the portion, located above the limiting ring, of the connecting rod is attached to the inner wall of the cylinder and is in sliding connection with the inner wall of the cylinder, and a detector is fixedly connected to the outer wall of the inner threaded cylinder. Therefore, when the detector and the flange are installed and fixed, the detector can adapt to flanges of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of filter efficiency detection devices, in particular to a quick-install filter efficiency detection device. Background Art

[0002] At present, filters are generally used for air purification in ventilation pipe networks. The upstream and downstream of the filters are often connected to the ventilation pipe network through flanges. In order to detect the filtering effect of the filters during use, they are often detected by detectors. The detectors include a dust-generating uniform device installed in the upstream flange of the filter and a uniform detection device installed in the downstream flange of the filter. The dust-generating uniform device is used to emit a certain amount of PAO oil (polyalphaolefin) to simulate the quantitative number of particles upstream of the filter. The uniform detection device is used to detect the number of particles in the air after the filter is filtered. The existing detection devices are mostly fixed on the flanges upstream and downstream of the filter by welding or cable ties.

[0003] Welding fixation: Weld a fixed bracket at the flange mouth, and weld and fix the dust generation uniformity device or uniformity detection device on the fixed bracket;

[0004] Fixing with cable ties: The current equalizing plate fixing bracket needs to be welded and fixed at the flange air outlet, and the current equalizing plate needs to be riveted to the fixing bracket with rivets. Then, the dust generation uniformity device / uniformity detection method needs to be positioned and fixed with cable ties.

[0005] The processes of these two methods are complicated and the processing is inconvenient, resulting in high production costs. At the same time, since the flange sizes of different filters are different, the detector needs to be customized according to the flange size, further increasing the production cost. Utility Model Content

[0006] The purpose of the utility model is to provide a quick-install filter efficiency detection device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a quick-install filter efficiency detection device, comprising an upper fixed assembly, a rotating fixed part and a lower fixed assembly arranged in sequence from top to bottom, the upper fixed assembly comprising an upper support plate and a cylinder fixedly arranged at the bottom end of the upper support plate, the rotating fixed part comprising a connecting rod and a handle fixedly connected to the outer wall of the connecting rod, the lower fixed assembly comprising a lower support plate and an internally threaded cylinder fixedly connected to the lower support plate, the outer wall of the connecting rod located below the limiting ring is threadedly connected to the inner wall of the internally threaded cylinder, the outer wall of the connecting rod located above the limiting ring is fitted and slidably connected to the inner wall of the cylinder, and a detector is fixedly connected to the outer wall of the internally threaded cylinder.

[0008] Furthermore, a limiting ring is sleeved and fixedly provided on the middle part of the outer wall of the connecting rod.

[0009] Furthermore, the outer wall of the connecting rod located between the bottom end of the limiting ring and the internal threaded tube is threadedly connected to a nut.

[0010] Furthermore, upper side plates and lower side plates are fixedly arranged on the side walls of the upper and lower abutment plates away from the inspector, and the cross-sections of the upper side plates and the upper abutment plates and the cross-sections of the lower side plates and the lower abutment plates both form L-shaped structures.

[0011] Furthermore, the top end of the upper abutment plate and the bottom end of the lower abutment plate are both provided with evenly arranged protrusions.

[0012] The beneficial effects achieved by the utility model are:

[0013] 1. Through the threaded connection between the internal threaded tube and the connecting rod, the distance between the upper and lower plates can be adjusted, so that when the detector is installed and fixed between the flange, it can adapt to flanges of different sizes. It has a simple structure, convenient processing, and quick and convenient installation;

[0014] 2. Standardized design can also reduce the problem of high production costs caused by flange size issues, and at the same time, standardized design also improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of a quick-install filter efficiency detection device in the embodiment;

[0016] Figure 2 An exploded view of a quick-install filter efficiency detection device in an embodiment;

[0017] Figure 3 The figure shows the top end of the upper abutment plate and the bottom end of the lower abutment plate;

[0018] Figure 4 This is a display diagram of a quick-install filter efficiency detection device in an embodiment in a flange connected state. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] like Figure 1 and 2As shown, the utility model discloses a quick-install filter efficiency detection device, comprising: an upper fixed assembly, a rotating fixed part and a lower fixed assembly which are arranged in sequence from top to bottom, the upper fixed assembly comprising an upper abutment plate 11 and a cylinder 12 fixedly arranged at the bottom end of the upper abutment plate 11, the rotating fixed part comprising a connecting rod 21, a limiting ring 22 which is sleeved and fixedly connected to the middle part of the outer wall of the connecting rod 21 and a handle 23 fixedly connected to the outer wall of the limiting ring 22, the lower fixed assembly comprising a lower abutment plate 31 and an internally threaded cylinder 32 fixedly connected to the lower abutment plate 31, the outer wall of the connecting rod 21 located below the limiting ring 22 is threadedly connected to the inner wall of the internally threaded cylinder 32, the outer wall of the connecting rod 21 located above the limiting ring 22 is fitted with and slidably connected to the inner wall of the cylinder 12, a detector is fixedly connected to the outer wall of the internally threaded cylinder 32, and the execution end of the detector faces the inside of the filter.

[0021] Further, such as Figure 1 and 2 As shown, a limiting ring 22 is sleeved and fixedly provided on the middle part of the outer wall of the connecting rod 21 , and the top end of the limiting ring 22 abuts against the bottom end of the cylinder 12 .

[0022] Further, such as Figure 1 and 2 As shown, in order to increase the fixing effect between the connecting rod and the internal threaded barrel, the outer wall of the connecting rod 21 located between the bottom end of the limiting ring 22 and the internal threaded barrel 32 is threadedly connected to the nut 4.

[0023] Further, such as Figure 1 and 2 As shown, in order to ensure that the upper abutment plate and the lower abutment plate are parallel to the inner wall of the flange and to increase the anti-displacement effect, the upper abutment plate 11 and the lower abutment plate 31 are respectively and fixedly provided with an upper side plate 13 and a lower side plate 33 on the side walls away from the inspector, and the cross-sections of the upper side plate 13 and the upper abutment plate 11 and the cross-sections of the lower side plate 33 and the lower abutment plate 31 form an L-shaped structure.

[0024] Further, such as Figure 3 As shown, in order to increase the friction between the upper abutment plate and the lower abutment plate and the inner wall of the flange respectively, the top end of the upper abutment plate 11 and the bottom end of the lower abutment plate 31 are both provided with evenly arranged protrusions 5.

[0025] Based on the above structure, Figure 1-4As shown, when in use, the bottom end of the lower plate 31 is abutted against the inner wall of the flange, and the inner wall of the lower side plate 33 is fitted with the side wall of the flange close to the inside of the filter. Then, the handle 23 is manually turned, and the handle 23 drives the connecting rod 21 to rotate through the limit ring 22. Since the connecting rod 21 and the internal threaded tube 32 are threadedly connected, the connecting rod 21 will expand and contract during rotation, thereby adjusting the spacing between the upper plate 11 and the lower plate 31. By continuously rotating the connecting rod 21, the connecting rod 21 pushes the upper fixing assembly upward through the limit ring 22. When the top of the upper side plate 13 is about to contact the inner wall of the flange, the angle of the upper plate 11 is adjusted by rotating the cylinder 12, so that the upper side plate 13 and the lower side plate 33 remain vertical, and the connecting rod 21 is continued to be rotated until the top of the upper plate 11 abuts against the inner wall of the flange, and then the nut 4 is rotated until the nut 4 abuts against the top of the internal threaded tube 32 and is screwed.

[0026] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A quick-install filter efficiency detection device, It is characterized in that The invention comprises an upper fixing component, a rotating fixing component and a lower fixing component which are arranged in sequence from top to bottom, wherein the upper fixing component comprises an upper support plate (11) and a cylinder (12) fixedly arranged at the bottom end of the upper support plate (11), the rotating fixing component comprises a connecting rod (21) and a handle (23) fixedly connected to the outer wall of the connecting rod (21), the lower fixing component comprises a lower support plate (31) and an internally threaded cylinder (32) fixedly connected to the lower support plate (31), the outer wall of the connecting rod (21) located below the limiting ring (22) is threadedly connected to the inner wall of the internally threaded cylinder (32), the outer wall of the connecting rod (21) located above the limiting ring (22) is in contact with and slidably connected to the inner wall of the cylinder (12), and a detector is fixedly connected to the outer wall of the internally threaded cylinder (32).

2. A quick-install filter efficiency detection device according to claim 1, Features: A limiting ring (22) is sleeved and fixedly arranged on the middle part of the outer wall of the connecting rod (21).

3. A quick-install filter efficiency detection device according to claim 1, Features: The outer wall of the connecting rod (21) located between the bottom end of the limiting ring (22) and the internal threaded tube (32) is threadedly connected to the nut (4).

4. A quick-install filter efficiency detection device according to claim 1, Features: An upper side plate (13) and a lower side plate (33) are respectively and fixedly arranged on the side walls of the upper abutment plate (11) and the lower abutment plate (31) away from the inspector, and the cross-sections of the upper side plate (13) and the upper abutment plate (11) and the cross-sections of the lower side plate (33) and the lower abutment plate (31) both form an L-shaped structure.

5. A quick-install filter efficiency detection device according to claim 1, Features: The top end of the upper abutment plate (11) and the bottom end of the lower abutment plate (31) are both provided with evenly arranged protrusions (5).

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