Positive and negative pressure integrated dust removal device for dust explosion area

Abstract

A positive and negative pressure integrated dust removal device for a dust explosion area is provided with a dust hood, an exhaust fan, a negative pressure air duct, a positive pressure blowing pipe, a positive pressure comb-shaped blowing opening, a comb-shaped part arranged on the positive pressure comb-shaped blowing opening and a dust filter bag. According to the dust collection device, the exhaust fan is arranged to extract air in the first cavity, so that negative pressure is formed in the negative pressure air duct, dust is sucked, the comb-shaped part guides air in the positive pressure air blowing pipe to face airflow blown out of the positive pressure comb-shaped air blowing opening, and the air in the negative pressure air blowing pipe is blown out of the negative pressure comb-shaped air blowing opening. The dust suction hood is arranged in the second cavity, so that dust in the opening is blown by airflow and limited in the second cavity by the dust suction hood, an exhaust fan is matched to extract the airflow in the negative-pressure air suction pipe, and the dust is sucked into the dust filter bag along the negative-pressure air suction pipe, so that the suction force at the inlet end of the negative-pressure air suction pipe is improved, and the dust in the covering area of the opening is removed.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal device field especially is a kind of for dust explosion area positive-negative pressure integrated dust removal device. BACKGROUND

[0002] In recent years, dust explosion enterprises are required to clean dust regularly, but there is currently a lack of a dust collector suitable for dust explosion areas. Negative pressure cleaning dust is not effective for stubborn dust accumulated for a long time. If positive pressure is used to clean dust, it is easy to cause secondary dusting of flammable and explosive dust, which can easily cause dust explosion, resulting in personnel injury and property loss.

[0003] Defects and deficiencies of prior art: the dust collector on the market at present only considers household scenarios (for example: Chinese utility model patent (application number: 202220160257.3, publication number: CN216962293U), Chinese utility model patent (application number: 202320414832.2, publication number: CN219720564U)), without considering the special requirements of explosive dust areas for electrical equipment, and the produced dust collector cannot meet the explosion-proof requirements of electrical equipment in dust explosion-proof areas.

[0004] Chinese utility model patent (application number: 202320414832.2, publication number: CN219720564U) discloses a suction and blowing integrated dust collector, which can perform dust removal in blowing and suction states, but cannot simultaneously meet the requirements of dust cleaning in positive and negative pressure conditions. Only positive pressure blowing can easily cause secondary dusting, which does not meet the requirements of cleaning flammable and explosive dust places.

[0005] The present disclosure provides a dust removal device for dust explosion area positive-negative pressure integration, which not only effectively prevents secondary dusting caused by disturbance, but also solves the problem of difficult cleaning in large factory cleaning areas. Utility model content

[0006] The utility model provides a dust removal device for dust explosion area positive-negative pressure integration, which mainly aims to overcome the defect that the existing dust collector uses positive pressure to clean dust, which can easily cause secondary dusting during dust removal.

[0007] To solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The present disclosure provides a dust removal device for dust explosion area positive-negative pressure integration, which has:

[0009] A dust collection box;

[0010] An air extractor is arranged on the dust collection box;

[0011] A dust suction cover, an opening in the dust suction cover is arranged downwardly so that a cover of the dust suction cover is arranged on a corresponding dust upper side;

[0012] A dust filter bag arranged in a first cavity of the dust collecting box;

[0013] A negative pressure air suction pipe, an inlet end of the negative pressure air suction pipe is communicated with a second cavity in the dust suction cover;

[0014] A positive pressure air blowing pipe, one end of the positive pressure air blowing pipe is communicated with the second cavity in the dust suction cover;

[0015] A positive pressure comb-shaped air blowing port arranged on an air outlet of the positive pressure air blowing pipe, air blown out of the positive pressure air blowing pipe is guided by a comb-shaped part of the positive pressure comb-shaped air blowing port so that dust in the opening is blown up;

[0016] A three-way valve, the other end of the positive pressure air blowing pipe is communicated with the first cavity through a first branch pipe of the three-way valve; and

[0017] A negative pressure air duct;

[0018] Wherein, an air extractor is arranged to extract air in the first cavity so that a negative pressure is formed in the negative pressure air duct to suck dust, the comb-shaped part guides air in the positive pressure air blowing pipe to blow out of the positive pressure comb-shaped air blowing port so that dust in the opening is blown up and the dust is limited in the second cavity by the dust suction cover, air in the negative pressure air suction pipe is extracted by the air extractor, dust is sucked into the dust filter bag along the negative pressure air suction pipe, so that suction force at the inlet end of the negative pressure air suction pipe is improved to remove dust in a covered area of the opening.

[0019] In a possible implementation, an outlet end of the negative pressure air suction pipe is connected with the dust filter bag, air in the negative pressure air suction pipe is sucked by the air extractor so that the negative pressure air suction pipe absorbs dust in the dust suction cover and guides the dust into the dust filter bag.

[0020] In a possible implementation, the first branch pipe is used to control air flow from the first cavity to the positive pressure air blowing pipe.

[0021] In a possible implementation, the first cavity, the first branch pipe, the positive pressure air blowing pipe, the positive pressure comb-shaped air blowing port, the second cavity, the negative pressure air suction pipe, the air extractor and the dust filter bag are connected together to form a complete cycle of the negative pressure air duct.

[0022] Compared with the prior art, the dust suction device has the following beneficial effects:

[0023] The utility model discloses simple structure, practicality is strong, through the setting up air extractor extracts gas in the first cavity, to make the negative pressure air duct form negative pressure, the gas in the positive pressure air blowing pipe is blown out by the airflow of the comb part guide positive pressure comb air outlet, to make the dust in the opening be blown up by the airflow and dust is restricted in the second cavity by dust cover, cooperate the air extractor and extract the airflow in the negative pressure air suction pipe, and dust is inhaled into the filter bag along the negative pressure air suction pipe, thereby make the suction force of the inlet end of negative pressure air suction pipe, to remove the dust in the covering area of opening. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the explosion view of dust removal device.

[0025] Figure 2 It is the explosion view of positive pressure comb air outlet.

[0026] Figure 3 It is the module view of negative pressure air duct, and the arrow direction indicates the gas flow direction.

[0027] Figure 4 It is the structural view of dust removal device.

[0028] Figure 5 It is the structural schematic view of wheel assembly.

[0029] Figure 6 It is the schematic view of gas flow direction in negative pressure air duct, and the arrow direction indicates the gas flow direction.

[0030] Figure 7 It is the schematic view of gas flow direction in positive pressure comb air outlet, and the arrow direction indicates the gas flow direction.

[0031] In the drawing: 101, dust collection box;100, air extractor;102, dust cover;103, filter bag;104, negative pressure air suction pipe;105, first cavity;106, positive pressure comb air outlet;107, positive pressure air blowing pipe;108, three-way valve;112, first branch pipe;200, wheel assembly;Handle 201. DETAILED DESCRIPTION

[0032] To make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme of the utility model embodiment will be clearly and completely described below with the drawings of the utility model embodiment. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment.

[0033] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with one another.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The application will be described with reference to the accompanying drawings, in which like reference numerals indicate like elements throughout the several figures. The use of "first", "second", and "third" or similar terms in the specification is used for clarity and does not necessarily indicate any order, quantity, or importance.

[0035] With reference to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a positive and negative pressure integrated industrial dust removal device has a dust collection box 101, an air extractor 100, a dust suction hood 102, a dust filter bag 103, a negative pressure air suction pipe 104, a positive pressure air blowing pipe 107, a positive pressure comb-shaped air blowing port 106, a three-way valve 108, a first branch pipe 112, a second branch pipe, a wheel assembly 200, and a handle 201.

[0036] With reference to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the air extractor 100 is arranged on the dust collection box 101. The air extractor 100 is provided with an air speed adjusting switch.

[0037] With reference to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the opening in the dust suction hood 102 is arranged downward, so that the cover of the dust suction hood 102 is arranged on the corresponding dust upper side.

[0038] With reference to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the dust filter bag 103 is arranged in the first cavity 105 of the dust collection box 101.

[0039] With reference to Figure 1、 Figure 2 、 Figure 3 and Figure 4 The inlet end 109 of the negative pressure air suction pipe 104 is connected to the second cavity 106 in the dust cover 102, and the outlet end of the negative pressure air suction pipe 104 is connected to the dust filter bag 103. The air suction fan 100 is used to suck the air in the negative pressure air suction pipe 104, so that the negative pressure air suction pipe 104 absorbs the dust in the dust cover 102 and leads the dust into the dust filter bag 103.

[0040] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 One end of the positive pressure air blowing pipe 107 is connected to the second cavity 106 in the dust cover 102.

[0041] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The positive pressure comb air blowing port 106 is arranged on the air outlet of the positive pressure air blowing pipe 107. The air flow blown by the positive pressure air blowing pipe 107 is guided by the comb part 110 of the positive pressure comb air blowing port 106, so that the dust in the opening is blown up.

[0042] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The other end of the positive pressure air blowing pipe 107 is connected to the first cavity 105 through the first branch pipe 112 of the three-way valve 108, and the flow of gas from the first cavity 105 to the positive pressure air blowing pipe 107 is controlled through the first branch pipe 112.

[0043] Referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 1 and Figure 2 The first cavity 105, the first branch pipe 112, the positive pressure air blowing pipe 107, the positive pressure comb air blowing port 106, the second cavity 106, the negative pressure air suction pipe 104, the air suction fan 100 and the dust filter bag 103 are connected together to form a complete circulating negative pressure air duct. The air suction fan 100 is arranged to extract the gas in the first cavity 105, so that the negative pressure air duct forms a negative pressure. The comb part 110 guides the air flow in the positive pressure air blowing pipe 107 towards the air flow blown out of the positive pressure comb air blowing port 106, so that the dust in the opening is blown up and the dust is limited in the second cavity 106 by the dust cover 102. The air suction fan 100 extracts the air flow in the negative pressure air suction pipe 104. The dust is sucked into the dust filter bag 103 along the negative pressure air suction pipe 104, so that the suction force at the inlet end 109 of the negative pressure air suction pipe 104 is improved to remove the dust in the covered area of the opening.

[0044] In some embodiments, referring to Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 1 and Figure 2 , the positive pressure blowing pipe 107 is depressurized through the second branch pipe of the three-way valve 108.

[0045] In some embodiments, referring to Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 1 and Figure 2 , the comb part 110 is provided with a hole air outlet for accelerating the flow rate of the gas so that the dust is blown up.

[0046] In some embodiments, referring to Figure 3 , Figure 4 , Figure 6 and Figure 7 , the negative pressure suction pipe 104 has at least two branch pipes 111 which are arranged at intervals on the cover body, and the inlet ends of the branch pipes 111 extend through the cover body into the second cavity 106, and when the dust is blown up, the dust enters the negative pressure suction pipe 104 through the corresponding branch pipe 111.

[0047] In some embodiments, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 , the bottom of the dust collection box 101 is provided with a wheel assembly 200 for walking, and the rear of the dust collection box 101 is provided with a handle 201.

[0048] In some embodiments, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 , the holes of the comb part 110 can blow up the stubborn dust and at the same time suck away the suspended dust in a negative pressure suction manner through the negative pressure suction pipe 104 in the dust suction cover 102. Not only effectively curb the secondary dust caused by disturbance, but also solve the problem of difficult cleaning of stubborn dust.

[0049] In some embodiments, referring to Figure 3 , Figure 6 , Figure 7 , Figure 3 , Figure 6 and Figure 7The two ends of the negative pressure air suction pipe 104 are connected with the dust suction cover 102 with comb-shaped dust blowing holes and the dust collection box 101 and the dust suction end of the air suction machine 100 through the motor impeller.

[0050] In some embodiments, referring to Figure 3 , Figure 6 and Figure 7 , the positive pressure comb-shaped air blowing hole 106 is connected with the air suction machine 100 through the positive pressure air blowing pipe 107, and high-speed airflow is blown out through the small holes to blow up stubborn dust.

[0051] In some embodiments, referring to Figure 3 , Figure 6 and Figure 7 , the dust suction cover 102 uses the negative pressure air suction pipe 104 to suck the dust blown up by the high-speed airflow into the dust collection box 101.

[0052] In some embodiments, referring to Figure 1 , Figure 2 and Figure 3 , the first control switch is arranged to control the air suction machine 100, and the second control switch is arranged to control the three-way valve 108, so that the dust suction can be realized in two modes; one is the negative pressure dust suction mode, the first branch pipe 112 of the three-way valve 108 is closed through the second control switch to close the positive pressure air blowing pipe 107, and the air suction machine 100 is turned on through the first control switch, so that the negative pressure air suction pipe 104 is turned on, and the ordinary dust is cleaned; the other is the positive and negative pressure mixed dust suction mode, when there is part of stubborn dust accumulation, the positive and negative pressure mixed dust suction mode is turned on, the three-way valve 108 is turned on through the second control switch to turn on the positive pressure air blowing pipe 107, and the air suction machine 100 is turned on through the first control switch to turn on the negative pressure air suction pipe 104, so that the stubborn dust is effectively cleaned.

[0053] In some embodiments, referring to Figure 4 , Figure 6 and Figure 7 , by using the high-pressure air blowing of the small holes of the comb-shaped part 110, the stubborn dust is floated in the full-coverage cover type dust suction cover 102, and through the design of the positive and negative pressure integration, the ordinary accumulated dust can be cleaned, and the stubborn dust can be effectively cleaned.

[0054] In some embodiments, referring to Figure 1 , Figure 2 and Figure 3 , by adjusting the opening and closing states of the negative pressure air suction pipe 104 and the positive pressure air blowing pipe 107, two dust suction modes are controlled: (1) in the case that the negative pressure air suction pipe 104 is turned on and the positive pressure air blowing pipe 107 is turned off, the negative pressure dust suction for the ordinary dust can be realized; (2) in the case that the negative pressure air suction pipe 104 is turned on and the positive pressure air blowing pipe 107 is turned on, the positive pressure dust blowing and the negative pressure dust suction exist in the dust suction cover 102 at the same time, and the stubborn dust is blown up.

[0055] Working principle: refer to Figure 4 , Figure 6 , Figure 7 , ​ , ​ and ​ , by setting the first cavity 105, the first branch pipe 112, the positive pressure blowing pipe 107, the positive pressure comb blowing port 106, the second cavity 106, the negative pressure suction pipe 104, the exhaust fan 100 and the dust filter bag 103 are connected together to constitute a complete cycle of negative pressure air duct, the exhaust fan 100 extracts gas in the first cavity 105, so that the negative pressure air duct forms a negative pressure, thereby sucking dust, the comb part 110 guides the gas in the positive pressure blowing pipe 107 to blow out the airflow towards the positive pressure comb blowing port 106, so that the dust in the opening is blown up by the airflow and the dust is limited in the second cavity 106 by the dust cover 102, cooperating with the exhaust fan 100 to extract the airflow in the negative pressure suction pipe 104, the dust is sucked into the dust filter bag 103 along the negative pressure suction pipe 104, thereby improving the suction force at the inlet end 109 of the negative pressure suction pipe 104 to remove the dust in the covered area of the opening.

[0056] Refer to ​ , ​ , ​ , ​ , ​ and ​ , the exhaust fan 100 extracts the gas in the negative pressure suction pipe 104 to form a positive pressure in the positive pressure blowing pipe 107, the internal positive pressure is normally discharged by opening the second branch pipe of the three-way valve 108, and the internal positive pressure is discharged by closing the second branch pipe of the three-way valve 108 to blow off the stubborn dust by the positive pressure blowing pipe 107 and the positive pressure comb blowing port 106.

[0057] The above is only a specific embodiment of the present application, but the design concept of the present application is not limited to this, any non-essential change of the present application using this concept should belong to the behavior of infringing the protection scope of the present application.

Claims

1. A dust explosion area positive and negative pressure integrated dust removal device, characterized in that, Possessing: a dust collecting box; an air extractor arranged on the dust collecting box; a dust suction hood, an opening in the dust suction hood is arranged downwardly so that a cover of the dust suction hood is arranged on a corresponding dust upper side; a dust filtering bag arranged in a first cavity of the dust collecting box; a negative pressure air suction pipe, an inlet end of the negative pressure air suction pipe is communicated with a second cavity in the dust suction hood; a positive pressure air blowing pipe, one end of the positive pressure air blowing pipe is communicated with the second cavity in the dust suction hood; a positive pressure comb-shaped air blowing port arranged on an air outlet of the positive pressure air blowing pipe, air blown out of the positive pressure air blowing pipe is guided by a comb-shaped part of the positive pressure comb-shaped air blowing port so that dust in the opening is blown up; a three-way valve, the other end of the positive pressure air blowing pipe is communicated with the first cavity through a first branch pipe of the three-way valve; and a negative pressure air duct; wherein, the air extractor is configured to extract air in the first cavity so that a negative pressure is formed in the negative pressure air duct to suck dust, the comb-shaped part guides air in the positive pressure air blowing pipe to blow out of the positive pressure comb-shaped air blowing port so that dust in the opening is blown up and dust is limited in the second cavity by the dust suction hood, air in the negative pressure air suction pipe is extracted by the air extractor, dust is sucked into the dust filtering bag along the negative pressure air suction pipe, so that suction force at the inlet end of the negative pressure air suction pipe is improved to remove dust in a covered area of the opening.

2. The dust explosion area positive and negative pressure integrated dust removal device according to claim 1, wherein, An outlet end of the negative pressure air suction pipe is connected with the dust filtering bag, air in the negative pressure air suction pipe is sucked by the air extractor so that the negative pressure air suction pipe absorbs dust in the dust suction hood and guides dust into the dust filtering bag.

3. The dust explosion area positive and negative pressure integrated dust removal device according to claim 1, characterized in that, The first branch pipe is used to control air flow from the first cavity to the positive pressure air blowing pipe.

4. The dust explosion area positive and negative pressure integrated dust removal device according to claim 1, wherein, The first cavity, the first branch pipe, the positive pressure air blowing pipe, the positive pressure comb-shaped air blowing port, the second cavity, the negative pressure air suction pipe, the air extractor and the dust filtering bag are connected together to form a complete cycle of the negative pressure air duct.

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