Primary filtering suction arm air pipe of dust filtering unit

Abstract

The utility model discloses a primary filtering suction arm air pipe of a dust filtering unit, which comprises a bracket mounted on the outer side of a plant, and further comprises a fine filtering unit mounted at the upper end of the bracket and used for filtering sucked small-particle dust, and a secondary filtering unit mounted at the lower end of the bracket and used for filtering sucked small-particle dust, the coarse filtering unit comprises a filtering section which is communicated with the fine filtering unit and is used for filtering large-particle dust before the large-particle dust enters the fine filtering unit, and an ash storage section which is arranged at the inlet end of the filtering section and is used for collecting the large-particle dust filtered by the filtering section; and the ash pumping section is arranged at the inlet end of the ash storage section and is used for pumping out the dust in the plant. Large-particle dust is filtered through the second filtering holes, the filtered large-particle dust is concentrated in the dust collecting cavity, and small-particle dust penetrates through the second filtering holes, enters the dust collecting box through the air supply pipe and then is concentrated in the dust collecting box after being filtered by the first filtering holes; large-particle dust and small-particle dust are filtered in a classified mode, and the first filtering holes are prevented from being quickly blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of dust filtration, in particular to a primary filter suction arm air duct of a dust filtration unit. Background Art

[0002] When the dust collector in a textile factory works normally, under the action of the system fan, the air can be blown onto the surface of the textile or even penetrate through the textile. The blowing can take away the dust on the textile, and the dust-containing gas is sucked into the outlet pipe, evenly distributed to each outlet chamber through each intake branch pipe, and then rushes into the filter screen. A large amount of dust is intercepted on the surface of the filter screen, while the air flow passes through the filter screen to achieve purification.

[0003] However, during the dust suction process of the primary filter suction arm air duct in the existing dust filtration unit, usually a filter cover with a group of small filter holes is used to filter the inhaled dust. Due to the different particle sizes of the inhaled dust, using only a filter cover with a group of small filter holes to filter the dust cannot classify and filter large-particle dust and small-particle dust. It is easy for large-particle dust to quickly accumulate on the surface of the filter holes, resulting in the filter holes being quickly blocked. It is necessary to clean the filter cover frequently by hand in a short period, which is time-consuming and laborious.

[0004] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is the closest prior art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a primary filter suction arm air duct of a dust filtration unit to solve the problem that in the existing primary filter suction arm air duct of a dust filtration unit, a filter cover with a group of small filter holes is used to filter the inhaled dust, which cannot classify and filter large-particle dust and small-particle dust, and it is easy for large-particle dust to quickly accumulate on the surface of the filter holes, resulting in the filter holes being quickly blocked, and it is necessary to clean the filter cover frequently by hand in a short period, which is time-consuming and laborious.

[0006] To achieve the above purpose, the utility model provides the following technical solution:

[0007] The primary filter suction arm air duct of a dust filtration unit includes a bracket installed outside the factory building, and further includes:

[0008] A fine filtration unit, installed at the upper end of the bracket, for filtering the small-particle dust drawn in;

[0009] A coarse filtration unit, including a filtration section connected to the fine filtration unit for filtering the large-particle dust before entering the fine filtration unit, an ash storage section provided at the inlet end of the filtration section for collecting the large-particle dust filtered by the filtration section, and an ash extraction section provided at the inlet end of the ash storage section for extracting the dust in and out of the factory building.

[0010] Furthermore, the fine filtration unit includes:

[0011] A dust collection box, installed at the upper end of the bracket, and a cavity for accommodating small-particle dust is provided inside the dust collection box;

[0012] A closing door, provided at an opening end of the dust collection box, for blocking the small-particle dust inside the dust collection box;

[0013] An air outlet pipe, connected to the upper end of the dust collection box and communicating with the inside of the dust collection box;

[0014] A fan, provided inside the air outlet pipe, for continuously pumping air inside the dust collection box to form a negative pressure state;

[0015] A first filter cover, provided inside the dust collection box and inserted into the lower end opening of the air outlet pipe through an insertion ring;

[0016] First filter holes, evenly distributed on the outer side of the first filter cover, for filtering small-particle dust.

[0017] Furthermore, the filtration section includes:

[0018] An air supply pipe, connected to one end of the dust collection box and communicating with the inside of the dust collection box;

[0019] A second filter cover, fixedly connected to the air inlet end of the air supply pipe, the second filter cover is frustum-shaped, and an external thread is provided on the outer side of the connection between the air supply pipe and the second filter cover;

[0020] Second filter holes, evenly distributed on the outer side of the second filter cover, for filtering large-particle dust, and the aperture of the second filter holes is larger than that of the first filter holes.

[0021] Furthermore, the dust storage section includes:

[0022] A telescopic pipe, threadedly connected to the outer side of the air supply pipe, and an internal thread adapted to the external thread is provided inside the telescopic pipe;

[0023] A limit ring, fixedly sleeved on the outer side of the telescopic pipe and located inside the ash extraction section, for limiting the movement of the telescopic pipe;

[0024] A rotating rod, fixedly connected to the outer side of the telescopic pipe, for rotating and adjusting the telescopic pipe.

[0025] Furthermore, a dust blocking ring is fixedly inserted inside the telescopic pipe, and the distance between the dust blocking ring and the internal thread is greater than the length of the second filter cover;

[0026] A dust collection cavity for collecting the large-particle dust filtered by the second filter cover is formed among the dust blocking ring, the telescopic pipe, and the internal thread.

[0027] Further, the ash extraction section includes:

[0028] A sleeve, slidably sleeved outside the ash storage section. The sleeve is fixedly inserted into the wall of the factory building, with one end inside the factory building and the other end outside the factory building;

[0029] A hose, connected to the end of the sleeve inside the factory building;

[0030] A dust suction block, connected to the end of the hose opposite to the sleeve, for removing dust from the areas in the factory building that need to be dusted;

[0031] A lifting rod, fixedly connected to the upper end of the dust suction block, for adjusting the position of the dust suction block.

[0032] Compared with the prior art, the beneficial effects of the present utility model are:

[0033] 1. In the process of dust entering the air supply pipe from the sleeve through the second filter holes, the second filter holes filter large-particle dust. The filtered large-particle dust accumulates in the dust collection cavity, and small-particle dust passes through the second filter holes and then enters the dust collection box through the air supply pipe. Subsequently, after being filtered by the first filter holes, it accumulates in the dust collection box, thereby realizing the hierarchical filtration of large-particle dust and small-particle dust, avoiding the first filter holes from being quickly blocked, reducing the manual cleaning frequency of the first filter holes, and avoiding air pollution caused by direct dust discharge.

[0034] 2. The present utility model can be cleaned by opening the closing door and taking out the dust in the dust collection box. For the cleaning of the dust collection cavity, by rotating the rotating rod, the rotating rod drives the telescopic pipe to rotate, so that the internal thread of the telescopic pipe is separated from the external thread, and then pushing the rotating rod, the rotating rod drives the limiting ring to move along the sleeve through the telescopic pipe, so that one end of the telescopic pipe is away from the second filter cover. At this time, the dust in the dust collection cavity can be taken out, which is convenient for cleaning the filtered dust. Description of the Drawings

[0035] Figure 1 is the overall structural schematic diagram of the present utility model;

[0036] Figure 2 is the cooperation relationship diagram of the fine filtration unit and the coarse filtration unit of the present utility model;

[0037] Figure 3 is the internal structural schematic diagram of the fine filtration unit and the coarse filtration unit of the present utility model;

[0038] Figure 4 is the present utility model in Figure 3 the enlarged view at A;

[0039] Figure 5 This is a schematic diagram of the separation state between the ash storage section and the filtration section of the present utility model.

[0040] Reference numerals: 100, factory building; 101, support; 1, fine filtration unit; 11, dust collection box; 12, closing door; 13, air outlet pipe; 14, fan; 15, first filter cover; 151, first filter hole; 16, insertion ring; 17, rain shield; 2, coarse filtration unit; 21, filtration section; 211, air supply pipe; 212, second filter cover; 213, second filter hole; 214, external thread; 22, ash storage section; 221, telescopic pipe; 2211, rotating rod; 222, internal thread; 223, dust baffle ring; 224, ash collection cavity; 225, limit ring; 23, ash extraction section; 231, sleeve; 232, hose; 233, dust suction block; 234, lifting rod. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0042] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0043] The primary filtration suction arm air duct of the dust filtration unit includes a support 101 installed outside the factory building 100, and further includes:

[0044] A fine filtration unit 1, installed at the upper end of the support 101, for filtering the small particle dust drawn in.

[0045] A coarse filtration unit 2, including a filtration section 21 connected to the fine filtration unit 1 for filtering large particle dust before entering the fine filtration unit 1, an ash storage section 22 provided at the inlet end of the filtration section 21 for collecting the large particle dust filtered by the filtration section 21, and an ash extraction section 23 provided at the inlet end of the ash storage section 22 for extracting the dust in and out of the factory building 100.

[0046] As an improvement, as Figure 3 , Figure 5 shown, the fine filtration unit 1 includes:

[0047] A dust collection box 11, installed at the upper end of the support 101, and a cavity for accommodating small particle dust is provided inside the dust collection box 11;

[0048] The closed door 12 is provided at the opening at one end of the dust collection box 11 for blocking small particulate dust in the dust collection box 11;

[0049] The air outlet pipe 13 is connected to the upper end of the dust collection box 11 and communicates with the inside of the dust collection box 11;

[0050] The fan 14 is provided inside the air outlet pipe 13 for continuously pumping air in the dust collection box 11 to form a negative pressure state. A driving motor is provided at the lower end of the fan 14;

[0051] The first filter cover 15 is provided inside the dust collection box 11 and is inserted into the lower end opening of the air outlet pipe 13 through the insertion ring 16;

[0052] The first filter holes 151 are evenly distributed on the outer side of the first filter cover 15 for filtering small particulate dust.

[0053] Preferably, a rain shield 17 is installed at the upper end of the support 101 for shielding rain from the upper end opening of the air outlet pipe 13;

[0054] Preferably, the insertion ring 16 is stuck inside the air outlet pipe 13 by the friction force with the air outlet pipe 13, facilitating subsequent disassembly and cleaning of the first filter cover 15.

[0055] Further, as Figure 3 , Figure 5 shown, the filtering section 21 includes:

[0056] The air supply pipe 211 is connected to one end of the dust collection box 11 and communicates with the inside of the dust collection box 11;

[0057] The second filter cover 212 is fixedly connected to the air inlet end of the air supply pipe 211. The second filter cover 212 is frustum-shaped, and an external thread 214 is provided on the outer side of the connection between the air supply pipe 211 and the second filter cover 212;

[0058] The second filter holes 213 are evenly distributed on the outer side of the second filter cover 212 for filtering large particulate dust. The aperture of the second filter holes 213 is larger than the aperture of the first filter holes 151.

[0059] Even further, as Figure 4 shown, the ash storage section 22 includes:

[0060] The telescopic pipe 221 is threadedly connected to the outer side of the air supply pipe 211, and an internal thread 222 adapted to the external thread 214 is provided inside the telescopic pipe 221;

[0061] The limit ring 225 is fixedly sleeved on the outer side of the telescopic pipe 221 and is located inside the ash extraction section 23 for limiting the movement of the telescopic pipe 221;

[0062] The rotating rod 2211 is fixedly connected to the outside of the telescopic tube 221 and is used for rotationally adjusting the telescopic tube 221.

[0063] Among them, as Figures 3-4 shown, a dust blocking ring 223 is fixedly inserted inside the telescopic tube 221, and the distance between the dust blocking ring 223 and the internal thread 222 is greater than the length of the second filter cover 212;

[0064] A dust collection cavity 224 for collecting large particle dust filtered by the second filter cover 212 is formed among the dust blocking ring 223, the telescopic tube 221, and the internal thread 222.

[0065] As an improvement, the dust extraction section 23 includes:

[0066] A sleeve 231 is slidably sleeved outside the ash storage section 22. The sleeve 231 is fixedly inserted into the wall of the workshop 100, with one end inside the workshop 100 and the other end outside the workshop 100;

[0067] A hose 232 is connected to one end of the sleeve 231 inside the workshop 100;

[0068] A dust suction block 233 is connected to one end of the hose 232 opposite to the sleeve 231 and is used for dust removal in the area that needs to be dusted in the workshop 100;

[0069] A lifting rod 234 is fixedly connected to the upper end of the dust suction block 233 and is used for position adjustment of the dust suction block 233.

[0070] It should be noted that in the specific implementation process of the present invention, as Figures 1-2 shown, when a certain area in the workshop 100 needs to be dusted, the drive motor at the lower end of the fan 14 is started, and the drive motor drives the fan 14 to rotate at a high speed, so that the dust suction block 233 located inside the workshop 100 will start to continuously extract air, and the extracted air will pass through the hose 232, the sleeve 231, the telescopic tube 221, the second filter hole 213, the air supply pipe 211, the dust collection box 11, the first filter hole 151, and the air outlet pipe 13 in sequence for discharge. During this process, the staff can lift the lifting rod 234 to switch the position of the dust suction block 233 to ensure that the dust suction block 233 can be further close to the area that needs to be dusted, and the dust removal effect is good;

[0071] As Figures 3-4As shown, during the process of dust entering the air supply duct 211 from the sleeve 231 through the second filtering holes 213, the second filtering holes 213 filter out large-particle dust. The filtered large-particle dust accumulates in the dust collection cavity 224. Small-particle dust passes through the second filtering holes 213 and then enters the dust collection box 11 through the air supply duct 211. Subsequently, it is filtered by the first filtering holes 151 and accumulates in the dust collection box 11. Thus, hierarchical filtration of large-particle dust and small-particle dust is achieved, preventing the first filtering holes 151 from being quickly blocked, reducing the manual cleaning frequency of the first filtering holes 151, and avoiding air pollution caused by direct dust emission.

[0072] As Figures 4-5 shown, when it is necessary to clean the inside of the dust collection box 11 and the dust collection cavity 224, by opening the closing door 12, the dust in the dust collection box 11 can be taken out to achieve cleaning. For the cleaning of the dust collection cavity 224, by rotating the rotating rod 2211, the rotating rod 2211 drives the telescopic pipe 221 to rotate, so that the internal thread 222 of the telescopic pipe 221 is separated from the external thread 214. Then, by pushing the rotating rod 2211, the rotating rod 2211 drives the limiting ring 225 to move along the sleeve 231 through the telescopic pipe 221, so that one end of the telescopic pipe 221 is far away from the second filtering cover 212. At this time, the dust in the dust collection cavity 224 can be taken out, which is convenient for cleaning the filtered dust.

[0073] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0074] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A primary filter suction arm duct of a dust filter unit, comprising a bracket (101) installed outside a plant (100), characterized in that: Also includes: A fine filtering unit (1), mounted on the upper end of the bracket (101), for filtering small dust particles sucked in; The coarse filtering unit (2) comprises a filtering section (21) connected to the fine filtering unit (1) for filtering large dust particles before entering the fine filtering unit (1), an ash storage section (22) arranged at the inlet end of the filtering section (21) for collecting the large dust particles filtered by the filtering section (21), and an ash extraction section (23) arranged at the inlet end of the ash storage section (22) for extracting dust in and out of the factory building (100).

2. The primary filter suction arm duct of the dust filter unit according to claim 1 is characterized in that: The fine filtration unit (1) comprises: A dust box (11) is mounted on the upper end of the bracket (101), wherein a cavity for accommodating small particles of dust is provided inside the dust box (11); A closed door (12) is provided at an opening at one end of the dust box (11) and is used to seal off small dust particles in the dust box (11); An air outlet pipe (13) connected to the upper end of the dust collecting box (11) and communicated with the interior of the dust collecting box (11); A fan (14) is arranged inside the air outlet pipe (13) and is used to continuously draw air from the dust collecting box (11) to form a negative pressure state; A first filter cover (15) is arranged inside the dust collecting box (11) and is inserted into the lower opening of the air outlet pipe (13) through an insert ring (16); The first filter holes (151) are evenly distributed on the outside of the first filter cover (15) and are used to filter small dust particles.

3. The primary filter suction arm duct of the dust filter unit according to claim 2 is characterized in that: The filtering section (21) comprises: An air supply pipe (211) connected to one end of the dust collecting box (11) and communicated with the interior of the dust collecting box (11); A second filter cover (212) is fixedly connected to the air inlet end of the air supply pipe (211); the second filter cover (212) is in a truncated cone shape; an external thread (214) is provided on the outer side of the connection between the air supply pipe (211) and the second filter cover (212); The second filter holes (213) are evenly distributed on the outside of the second filter cover (212) and are used to filter large particles of dust. The aperture of the second filter holes (213) is larger than the aperture of the first filter holes (151).

4. The primary filter suction arm duct of the dust filter unit according to claim 3 is characterized in that: The ash storage section (22) comprises: A telescopic tube (221) is threadedly connected to the outside of the air supply tube (211); an internal thread (222) matching the external thread (214) is provided inside the telescopic tube (221); A limiting ring (225) is fixedly sleeved on the outside of the telescopic tube (221) and located inside the ash extraction section (23), and is used to limit the movement of the telescopic tube (221); The rotating rod (2211) is fixedly connected to the outside of the telescopic tube (221) and is used to perform rotation adjustment on the telescopic tube (221).

5. The primary filter suction arm duct of the dust filter unit according to claim 4, characterized in that: A dust blocking ring (223) is fixedly inserted inside the telescopic tube (221), and the distance between the dust blocking ring (223) and the internal thread (222) is greater than the length of the second filter cover (212); An ash collecting chamber (224) for collecting large dust particles filtered by the second filter cover (212) is formed between the ash retaining ring (223), the telescopic tube (221) and the internal thread (222).

6. The primary filter suction arm duct of the dust filter unit according to claim 1, characterized in that: The ash extraction section (23) comprises: A sleeve (231) is slidably sleeved on the outside of the ash storage section (22); the sleeve (231) is fixedly inserted into the wall of the factory building (100) with one end located inside the factory building (100) and the other end outside the factory building (100); A hose (232) connected to one end of the sleeve (231) located inside the factory building (100); A dust suction block (233) is connected to the end of the hose (232) opposite to the sleeve (231) and is used to remove dust from the area in the factory building (100) that needs to be dusted; The lifting rod (234) is fixedly connected to the upper end of the dust suction block (233) and is used to adjust the position of the dust suction block (233).

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