Small-sized dust remover provided with three-stage air filter

Abstract

The utility model belongs to the field of environment-friendly dust removal equipment, and particularly relates to a small-sized dust remover provided with a three-stage air filter, which comprises a small-sized dust remover, a secondary air filter arranged on the back of the small-sized dust remover, a three-stage air filter arranged on the side surface of the small-sized dust remover, a first filter element is arranged in the first shell, and the first air inlet is connected with an air outlet of a silencing pipe of the small dust remover through a ventilation pipe; the third-stage air filter comprises a second shell, a second filter element is arranged in the second shell, and the second air inlet is connected with the first air outlet through a ventilation pipe elbow. The two-stage and three-stage dust removal device realizes two-stage and three-stage dust removal, can be used for in-situ dust collection and three-stage dust removal of'clean workshops' or individual or several dust pollution source points of the'clean workshops', and solves the problem that the space height is limited by the height of the workshops.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection dust removal equipment, and in particular a small dust collector equipped with a three-stage air filter. Background Technology

[0002] A utility model patent entitled "Integrated Cabinet-Type Small Offline Dust Collector" with application number "201920050356.4" discloses a small dust collector with a secondary air filter placed on top. However, the specific configuration is not explained. Moreover, it cannot be implemented when the height of the space is limited by the height of the workshop. Furthermore, for environments with strict dust control requirements, setting only a secondary air filter is not sufficient. Summary of the Invention

[0003] To overcome the shortcomings of the existing technology, this utility model proposes a small dust collector equipped with a three-stage air filter, achieving both two-stage and three-stage dust removal. It can be used for on-site dust collection and three-stage dust removal at individual or several dust pollution sources in "clean workshops" or "hygienic workshops," solving the problem of height limitations imposed by workshop height. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0004] A small dust collector equipped with a three-stage air filter includes a small dust collector, a secondary air filter installed at the back of the small dust collector, and a tertiary air filter installed on the side of the small dust collector. The secondary air filter includes a first housing, a first filter element installed inside the first housing, a first air inlet installed at the upper end of the first housing, and first air outlets installed on the sides of the first housing. The front of the first housing is a sealing plate, and the back of the first housing is a first fixing flange, which is fixedly connected to the back of the small dust collector. There are two first filter elements, which are distributed vertically inside the first housing, with the front of the first filter elements facing the direction of the first fixing flange. The first air inlet is connected to the air outlet of the silencer pipe of the small dust collector through a ventilation pipe.

[0005] The three-stage air filter includes a second housing, a second filter element inside the second housing, a second air inlet on the side of the second housing, a perforated plate on the front of the second housing serving as an air outlet, a second fixed flange on the back of the second housing, which is fixedly connected to the side of the small dust collector, and the second air inlet is connected to the first air outlet through a ventilation pipe elbow.

[0006] Furthermore, both the first fixed flange and the second fixed flange are 3# angle steel inner flanges. The size of the first fixed flange is consistent with the inner side of the first shell, and the size of the second fixed flange is consistent with the inner side of the second shell.

[0007] Furthermore, a first sealing gasket is provided between the first fixed flange and the back of the small dust collector, and a second sealing gasket is provided between the second fixed flange and the side of the small dust collector.

[0008] Furthermore, a first inner partition is provided on the upper part of the first housing. The first inner partition is fixedly connected to the top of the first housing through a first sealing plate. The first inner partition, the first sealing plate, and the upper part of the first housing form an airflow diffusion channel.

[0009] Specifically, the distance between the first inner partition and the top of the first housing is 86 mm.

[0010] Specifically, the distance between the first inner partition and the first fixed flange is 50mm.

[0011] Specifically, a second inner partition is provided on the right inner side or the left inner side of the second housing. The second inner partition is fixedly connected to the right side or the left side of the second housing through a second sealing plate, and the second inner partition and the right side or the left side of the second housing form an airflow diffusion channel.

[0012] Specifically, the distance between the second inner partition and the top of the second housing is 50 mm.

[0013] Ideally, there are two sets of three-stage air filters, symmetrically arranged on the left and right sides of the small dust collector.

[0014] This invention achieves two-stage and three-stage dust removal, and can be used for on-site dust collection and three-stage dust removal at individual or several dust pollution sources in "clean workshops" or "clean workshops", solving the problem of space height being limited by workshop height. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0016] Figure 2 for Figure 1 Side view;

[0017] Figure 3 This is a schematic diagram of the internal structure of a secondary air filter;

[0018] Figure 4 for Figure 3 A top view without the air inlet and inner partition;

[0019] Figure 5 for Figure 3 The left view;

[0020] Figure 6 This is a schematic diagram of the internal structure of a three-stage air filter;

[0021] Figure 7 for Figure 6Top view;

[0022] Figure 8 for Figure 6 The left view;

[0023] Figure 9 This is a structural schematic diagram of Embodiment 2 of the present invention. Detailed Implementation

[0024] Example 1

[0025] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Side view, Figure 2 The internal structure diagram of the intermediate and secondary air filters is shown. Figure 3 This is a schematic diagram of the internal structure of a secondary air filter; Figure 4 for Figure 3 A top view without the air inlet and inner partition; Figure 5 for Figure 3 The left view. (e.g.) Figures 1 to 5 As shown, a small dust collector equipped with a three-stage air filter includes a small dust collector 10. See also... Figure 1 As shown, Figure 1 This is a schematic diagram of the back of a small dust collector 10. A secondary air filter 1 is installed on the back of the small dust collector 10, and a tertiary air filter 2 is installed on the side of the small dust collector 10. The secondary air filter 1 includes a first housing 1.1, a first filter element 1.2 installed inside the first housing 1.1, a first air inlet 1.3 installed at the upper end of the first housing 1.1, and first air outlets 1.4 respectively installed on the side of the first housing 1.1. The front of the first housing 1.1 is a sealing plate 1.5, and the back of the first housing 1.1 is a first fixing method. The first fixed flange 1.6 is fixedly connected to the back of the small dust collector 10. There are two first filter elements 1.2, which are distributed vertically inside the first housing 1.1. The front of the first filter element 1.2 faces the first fixed flange 1.6. The first air inlet 1.3 is connected to the silencer outlet 11 of the small dust collector 10 through the ventilation pipe 1.7. In order to avoid the existing accessories of the small dust collector 10, the ventilation pipe 1.7 in Embodiment 1 has a 90° elbow, two bends and a flared mouth.

[0026] The three-stage air filter 2 includes a second housing 2.1, a second filter element 2.2 disposed inside the second housing 2.1, a second air inlet 2.3 disposed on the side of the second housing 2.1, a perforated plate 2.4 on the front of the second housing 2.1 which serves as an air outlet, a second fixing flange 2.5 on the back of the second housing 2.1 which is fixedly connected to the side of the small dust collector 10, and the second air inlet 2.3 connected to the first air outlet 1.4 via a ventilation pipe elbow 2.6.

[0027] The first fixed flange 1.6 and the second fixed flange 2.5 are both inner flanges of No. 3 angle steel. The size of the first fixed flange 1.6 is consistent with the inner side of the first housing 1.1, and the size of the second fixed flange 2.5 is consistent with the inner side of the second housing 2.1. A first sealing gasket 1.8 is provided between the first fixed flange 1.6 and the back of the small dust collector 10, and a second sealing gasket 2.7 is provided between the second fixed flange 2.5 and the side of the small dust collector 10.

[0028] See Figures 3 to 5 As shown, a first inner partition 1.9 is provided on the upper part of the first housing 1.1. The first inner partition 1.9 is fixedly connected to the top of the first housing 1.1 through a first sealing plate 1.10. The first inner partition 1.9, the first sealing plate 1.10, and the upper part of the first housing 1.1 form an airflow diffusion channel. The distance H between the first inner partition 1.9 and the top of the first housing 1.1 is 86mm, and the distance L between the first inner partition 1.9 and the first fixed flange 1.6 is 50mm. In Embodiment 1, a sealing plate fixing bracket 1.11 is provided between the upper and lower first filter elements 1.2. The sealing plate fixing bracket 1.11 is fixedly connected to the sealing plate 1.5.

[0029] Figure 6 This is a schematic diagram of the internal structure of a three-stage air filter; Figure 7 for Figure 6 Top view; Figure 8 for Figure 6 The left view, such as Figures 6 to 8 As shown, a second inner partition 2.8 is provided on the right inner side or left inner side of the second housing 2.1. The second inner partition 2.8 is fixedly connected to the second housing 2.1. The second inner partition 2.8 and the right or left side of the second housing 2.1 form an airflow diffusion channel. The distance between the second inner partition 2.8 and the right or left side of the second housing 2.1 is 50mm. In Embodiment 1, the second inner partition 2.8 is provided on the right inner side of the second housing 2.1. The second inner partition 2.8 and the right side of the second housing 2.1 form an airflow diffusion channel. The distance between the second inner partition 2.8 and the right side of the second housing 2.1 is 50mm. There are two second filter elements 2.2. The two second filter elements 2.2 are distributed vertically inside the second housing 2.1. The front of the second filter element 2.2 faces the direction of the second fixed flange 2.5.

[0030] It also includes a filter element holder 3, which maintains a 2-3mm gap with the first filter element 1.2 and the second filter element 2.2 respectively. The filter element holder 3 is made of 30×60mm square tubing, with the 60mm wide side as the vertical surface to form a large rectangular frame. Then, a 30×60mm square tubing is used to divide the large rectangular frame into two smaller rectangular frames. The large rectangular frame is embedded in the first housing 1.1 and the second housing 2.1 and welded to seal. Two smaller rectangular frames are made of 20×20mm square tubing with the same spacing as the smaller rectangular frames. The two smaller rectangular frames are embedded in the two smaller rectangular frames and welded to seal. The bottom of the frame is on the same vertical plane as the large rectangular frame. The two smaller rectangular frames form the base and the two smaller rectangular frames form the filter element holder 3.

[0031] Both the first filter element 1.2 and the second filter element 2.2 are locked to the filter element fixing frame 3 by fixing screws 4 and a central asymmetric plate 5. The fixing screws 4 are vertically welded to the 30mm surface of the 30×60mm square tube. The central asymmetric plate 5, when not fixed by nuts, always remains vertically downward under the action of gravity, facilitating the insertion of the filter element into the filter element fixing frame without being blocked by the central asymmetric plate 5. The supporting iron plate 6 is a small iron plate of 5-6mm, which is welded to the inner side of the housing corresponding to the screw position. Its height is consistent with the depth of the filter element, ensuring that the two ends of the central asymmetric plate 5 can stably lock the filter element. After the filter element is inserted, the central asymmetric plate 5 is placed in a horizontal position and tightened with nuts. The contact surface between the filter element and the base is equipped with a sealing gasket. Finally, the sealing gasket that presses the filter element is sealed and fixed to the base.

[0032] This utility model solves the problem of space height being limited by workshop height. In Embodiment 1, the three-stage air filter 2 can be set on the left or right side of the small dust collector 10. The clean air filtered by the filter cloth of the first-stage small dust collector 10 is then silenced by the silencer elbow device and reaches the silencer pipe outlet 11. Through the connecting pipeline, it enters the second-stage air filter 1, first reaching the air volume diffusion channel of the first housing 1.1 to ensure balanced air volume distribution. The interior of the first housing 1.1 forms a tightly sealed filter surface. All clean air must pass through the first filter element 1.2 before reaching the first outlet 1.4. Then it enters the third-stage air filter 2 and reaches the air volume diffusion channel of the second housing 2.1, where it is further filtered by the second filter element 2.2. In this way, the filtered air reaches the same cleanliness level as the filter element, thus obtaining clean air. For example, if the filter element cleanliness level is U15, then the corresponding "ISO Class 6 (Class 1000) clean air" is obtained.

[0033] Example 2

[0034] Figure 9 This is a schematic diagram of the structure of Embodiment 2 of this utility model; as shown Figure 9 As shown, in Embodiment 2, there are two sets of tertiary air filters 2, which are symmetrically arranged on the left and right sides of the small dust collector 10. That is, air outlets are provided on both sides of the first housing 1.1 of the secondary air filter 1. The two sets of tertiary air filters 2 are respectively connected to the corresponding air outlets. Embodiment 2 is a preferred embodiment of this utility model. Other settings of Embodiment 2 are the same as those of Embodiment 1, and will not be described again here.

[0035] In summary, this utility model achieves two-stage and three-stage dust removal, and can be used for on-site dust collection and three-stage dust removal at individual or several dust pollution sources in "clean workshops" or "cleanrooms". It also provides various levels of clean air as needed, realizes on-site internal circulation, greatly reduces the investment in centralized dust control equipment, greatly facilitates equipment layout and configuration, and solves the problem of space height being limited by workshop height.

Claims

1. A small dust collector equipped with a three-stage air filter, comprising a small dust collector, characterized in that, A secondary air filter is installed at the back of the small dust collector, and a tertiary air filter is installed on the side of the small dust collector. The secondary air filter includes a first housing, a first filter element is installed inside the first housing, a first air inlet is installed at the upper end of the first housing, and a first air outlet is installed on the side of the first housing. The front of the first housing is a sealing plate, and the back of the first housing is a first fixing flange. The first fixing flange is fixedly connected to the back of the small dust collector. There are two first filter elements, which are distributed vertically inside the first housing. The front of the first filter element faces the direction of the first fixing flange. The first air inlet is connected to the air outlet of the silencer pipe of the small dust collector through a ventilation pipe. The three-stage air filter includes a second housing, a second filter element disposed inside the second housing, a second air inlet disposed on the side of the second housing, a perforated plate on the front of the second housing serving as an air outlet, a second fixed flange on the back of the second housing, the second fixed flange being fixedly connected to the side of the small dust collector, and the second air inlet being connected to the first air outlet via a ventilation pipe elbow.

2. The small dust collector with a three-stage air filter as described in claim 1, characterized in that, Both the first fixed flange and the second fixed flange are 3# angle steel inner flanges. The size of the first fixed flange is consistent with the inner side of the first shell, and the size of the second fixed flange is consistent with the inner side of the second shell.

3. The small dust collector with a three-stage air filter as described in claim 1, characterized in that... A first sealing gasket is provided between the first fixed flange and the back of the small dust collector, and a second sealing gasket is provided between the second fixed flange and the side of the small dust collector.

4. The small dust collector with a three-stage air filter as described in claim 1, characterized in that, The upper part of the first housing is provided with a first inner partition plate, which is fixedly connected to the top of the first housing through a first sealing plate. The first inner partition plate, the first sealing plate, and the upper part of the first housing form an airflow diffusion channel.

5. The small dust collector with a three-stage air filter according to claim 4, characterized in that, The distance between the first inner partition and the top of the first housing is 86 mm.

6. The small dust collector with a three-stage air filter according to claim 4, characterized in that, The distance between the first inner partition and the first fixed flange is 50mm.

7. The small dust collector with a three-stage air filter according to claim 1, characterized in that, A second inner partition is provided on the right inner side or the left inner side of the second housing. The second inner partition is fixedly connected to the right side or the left side of the second housing through a second sealing plate. The second inner partition and the right side or the left side of the second housing form an airflow diffusion channel.

8. The small dust collector with a three-stage air filter according to claim 7, characterized in that, The distance between the second inner partition and the right or left side of the second housing is 50 mm.

9. The small dust collector with a three-stage air filter according to claim 1, characterized in that, The three-stage air filter consists of two sets, symmetrically arranged on the left and right sides of the small dust collector.

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