Negative pressure type dust removal device

Abstract

The utility model provides a negative pressure type dust removal device which comprises a negative pressure assembly and a dust removal assembly, the negative pressure assembly is connected with the dust removal assembly used for removing dust in gypsum calcination through a negative pressure fan, the negative pressure assembly comprises a negative pressure fan cover and a negative pressure fan, the surface of the negative pressure fan cover is provided with a filter part in a sealing and clamping mode through an installation clamping groove, and the filter part is connected with the negative pressure fan. Compared with the prior art, the negative pressure assembly has the advantages that when the negative pressure assembly is used, the negative pressure fan cover can effectively cover a dust producing area of the gypsum calcining equipment, the dust producing area of the gypsum calcining equipment can be effectively covered, and the dust producing area of the gypsum calcining equipment can be effectively covered by the negative pressure fan cover. Due to the fact that the dust outlet connecting position of the dust collecting device and the gypsum calcining equipment is in the negative pressure state through the negative pressure fan, when the negative pressure fan works, dust-containing gas generated by the gypsum calcining equipment can be actively sucked in, escaped dust can be rapidly sucked in, the dust catching capacity is greatly improved, and dust diffusion in a workshop is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal equipment, and specifically relates to a negative pressure dust removal device. Background Technology

[0002] A gypsum calcination dust removal device is used to remove dust generated during the calcination of gypsum. During gypsum calcination, physical and chemical changes produce a large amount of dust. If this dust is released into the air, it will not only pollute the environment but also harm the health of operators. Current gypsum calcination dust removal devices have several shortcomings. During dust removal, the suction efficiency is poor. Without negative pressure suction to guide the dust, the dust-laden gas relies solely on natural diffusion or simple ventilation to flow towards the dust removal device. In the complex environment of the gypsum calcination workshop, the dust easily disperses and accumulates, making efficient capture difficult. This is due to the lack of directional pressure difference driving, resulting in disordered and slow gas flow.

[0003] The conventional solution is to add ventilation ducts. However, while the purpose of adding ventilation ducts is to enhance ventilation and guide airflow, long-distance, multi-bend ducts will further increase wind resistance, reduce gas velocity, and cause dust to settle and block the ducts. This leads to frequent subsequent cleaning and maintenance, affecting the continuous and stable operation of the equipment, and also increases the downtime for equipment maintenance, thus reducing production efficiency. Therefore, a new structure is needed to solve the above-mentioned technical problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a negative pressure dust removal device to solve the problems mentioned in the background technology.

[0005] This utility model is achieved through the following technical solution: a negative pressure dust removal device, comprising: a negative pressure component and a dust removal component, wherein the negative pressure component is connected to a dust removal component for calcining gypsum via a negative pressure fan, the negative pressure component comprising: a negative pressure hood and a negative pressure fan, wherein a filter element is installed on the surface of the negative pressure hood via a mounting slot, and an air inlet pipe is installed on the rear surface of the negative pressure hood via a connector, the air inlet pipe being connected to the air inlet end of the negative pressure fan, and an air outlet pipe being installed on the air outlet end of the negative pressure fan; the dust removal component comprising: a second air inlet pipe and a dust collector, wherein the second air inlet pipe is installed on the outer surface of the air outlet pipe, and the end of the second air inlet pipe away from the air outlet pipe is connected to the inlet end of the dust collector, and a discharge end is provided at the lower end of the dust collector.

[0006] As a preferred implementation, the negative pressure air baffle is connected with the dust outlet of the gypsum calcining device, a sealing ring is arranged at the connection between the negative pressure air baffle and the gypsum calcining device, a mounting clamping groove with sealing rubber is arranged on the upper surface of the negative pressure air baffle, the filter element comprises a mounting frame, a filter screen and a handle, the handle is mounted on the upper surface of the mounting frame, and the filter screen can preliminarily filter the dust-containing gas entering the negative pressure air baffle during use. During the gypsum calcining process, dust of various particle sizes is generated, among which the larger particle dust (such as blocky gypsum fragments, unground impurities and the like) can be intercepted by the filter screen, which not only prevents these large particles from entering the subsequent dust suction pipeline and dust removal assembly, avoiding pipeline blockage or damage to the dust removal equipment.

[0007] As a preferred implementation, the mounting frame is internally mounted with the filter screen, the negative pressure air baffle is internally sealed and clamped with the filter screen with the mounting frame through the mounting clamping groove, and the side surface of the negative pressure air baffle away from the gypsum calcining rotating shaft is mounted with the air inlet pipe one through the connecting piece.

[0008] As a preferred implementation, the air outlet end of the upper surface of the negative pressure fan is mounted with the air outlet pipe, a sealing ring is arranged at the connection between the negative pressure fan and the air inlet pipe one, a sealing ring is arranged at the connection between the air outlet pipe and the air outlet end, and the outer surface of the air outlet pipe is mounted with the air inlet pipe two.

[0009] As a preferred implementation, the air inlet pipe two is matched with the air inlet pipe one in specification, one end of the air inlet pipe two away from the air outlet pipe is connected with the inlet end of the dust collector, the dust collector is a bag-type dust collector, a discharge end is mounted on the lower surface of the dust collector, and the negative pressure air baffle can effectively cover the dust production area of the gypsum calcining device during use, actively sucks the dust-containing gas generated by the gypsum calcining device, rapidly sucks the escaped dust, greatly enhances the dust capture ability, and reduces the diffusion of dust in the workshop.

[0010] As a preferred implementation, a one-way air valve is arranged at the connection between the air inlet pipe one, the air inlet pipe two and the air outlet pipe.

[0011] The beneficial effects of the present application are as follows: the negative pressure assembly is connected with the dust removal assembly for dust removal of the gypsum calcination through a negative pressure fan, and the negative pressure assembly comprises a negative pressure fan cover and a negative pressure fan; the rear surface of the negative pressure fan cover is provided with an air inlet pipe one through a connecting piece; and the air inlet pipe one is connected with the air inlet end of the negative pressure fan.

[0012] The filter is installed on the surface of the negative pressure fan cover through a clamping groove, the upper surface of the negative pressure fan cover is provided with a clamping groove with a sealing rubber, and the filter comprises a mounting frame, a filter screen and a handle. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Fig. 1 It is a whole structure schematic view of the negative pressure type dust removal device.

[0015] Fig. 2 It is a schematic view of the negative pressure assembly of the negative pressure type dust removal device.

[0016] Fig. 3 It is a schematic view of the filter of the negative pressure type dust removal device.

[0017] In the drawings, 100-negative pressure assembly, 110-negative pressure fan cover, 111-clamping groove, 120-connecting piece, 130-air inlet pipe one, 140-negative pressure fan, 150-air outlet pipe;

[0018] 200 - dust removal assembly, 210 - air inlet pipe two, 220 - dust collector, 230 - discharging end;

[0019] 300 - mounting frame, 310 - handle, 320 - filter screen. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figs. 1 to 3 The present application provides a technical solution: a negative pressure type dust removal device, comprising: a negative pressure assembly 100 and a dust removal assembly, the negative pressure assembly 100 is connected with the dust removal assembly for dust removal of gypsum calcination through a negative pressure fan 140, the negative pressure assembly 100 comprises: a negative pressure fan cover 110 and a negative pressure fan 140, the surface of the negative pressure fan cover 110 is sealed and clamped with a filter piece through a mounting clamping groove 111, the rear surface of the negative pressure fan cover 110 is installed with an air inlet pipe one 130 through a connecting piece 120, the air inlet pipe one 130 is connected with the air inlet end of the negative pressure fan 140, the air outlet end of the negative pressure fan 140 is installed with an air outlet pipe 150, the dust removal assembly comprises: an air inlet pipe two 210 and a dust collector 220, the outer surface of the air outlet pipe 150 is installed with the air inlet pipe two 210, the end of the air inlet pipe two 210 away from the air outlet pipe 150 is connected with the inlet end of the dust collector 220, and the lower end of the dust collector 220 is provided with a discharging end 230.

[0022] Please refer to Figs. 1 to 3 As a first embodiment of the present application: the negative pressure fan cover 110 is connected with the dust outlet of the gypsum calcination device, a sealing ring is arranged at the connection between the negative pressure fan cover 110 and the gypsum calcination device, the upper surface of the negative pressure fan cover 110 is provided with a mounting clamping groove 111 with sealing rubber, the filter piece comprises: a mounting frame 300, a filter screen 320 and a handle 310, the upper surface of the mounting frame 300 is installed with the handle 310;

[0023] The mounting frame 300 is internally installed with a filter screen, the inside of the negative pressure fan cover 110 is sealed and clamped with the filter screen with the mounting frame 300 through the mounting clamping groove 111, and the side surface of the negative pressure fan cover 110 away from the gypsum calcination shaft is installed with the air inlet pipe one 130 through the connecting piece 120;

[0024] When in use, the negative pressure assembly 100 is provided with multiple groups, when the user needs to perform dust removal on the gypsum calcining device, first install the negative pressure air cover 110 of the negative pressure assembly 100 at the dust outlet of the gypsum calcining device (the actual installation quantity and position need to be selected according to the actual situation), after the installation is completed, when the gypsum calcining device generates smoke dust, the smoke dust will be sucked into the inside of the negative pressure assembly 100, and then is discharged into the inside of the dust removal assembly, before entering the inside of the negative pressure assembly 100, the smoke dust will first pass through the filter screen 320 in the inside of the negative pressure air cover 110, so that the filter screen 320 preliminarily filters the smoke dust, so that larger smoke dust particles and fragments will not be sucked into the inside of the negative pressure fan 140, after the entire dust removal operation is completed, the user can hold the handle 310, and the installation frame 300 is separated from the negative pressure air cover 110, so that the inner wall of the installation frame 300 is installed with the filter screen 320, the surface of the filter screen 320 is not flush with the surface of the installation frame 300, so that the impurities on the surface of the filter screen 320 are not stripped through the negative pressure air cover 110 when the installation frame 300 is separated, then the surface of the filter screen 320 is cleaned, and then the installation frame 300 is reinstalled, since the filter screen 320 can preliminarily filter the dust-containing gas entering the negative pressure air cover 110 when in use, during the gypsum calcining process, various particle size dusts are generated, and larger particle size dusts (such as blocky gypsum fragments and unground impurities) can be intercepted by the filter screen 320, which not only can prevent the large particles from entering the subsequent dust suction pipeline and the dust removal assembly, avoids causing pipeline blockage or damage to the dust removal equipment, but also can reduce the pressure of the subsequent dust removal link, after each dust removal is completed, only the filter screen needs to be separated through the handle 310 for cleaning and then reinstallation.

[0025] Please refer to Figs. 1 to 3 , as a second embodiment of the utility model: the upper surface of the negative pressure fan 140 is provided with an air outlet pipe 150, the connection position between the negative pressure fan 140 and the air inlet pipe one 130 is provided with a sealing ring, the connection position between the air outlet pipe 150 and the air outlet end is provided with a sealing ring, and the outer surface of the air outlet pipe 150 is provided with an air inlet pipe two 210;

[0026] The air inlet pipe two 210 is matched with the air inlet pipe one 130 in specification, one end of the air inlet pipe two 210 away from the air outlet pipe 150 is connected with the inlet end of the dust collector 220, the dust collector 220 is a bag-type dust collector 220, and the lower surface of the dust collector 220 is provided with a discharge end 230 at the central position;

[0027] The connection positions between the air inlet pipe one 130, the air inlet pipe two 210 and the air outlet pipe 150 are all provided with one-way air valves;

[0028] After the operation steps of the first embodiment, the negative pressure fan 140 inside the negative pressure assembly 100 generates a negative pressure suction force, so that the negative pressure air cover 110 generates a negative pressure suction force at the connection with the gypsum calcining device. When the gypsum calcining device generates dust, the dust is sucked into the negative pressure air cover 110, then enters the air inlet pipe one 130 through the connecting piece 120, enters the air outlet pipe 150 in the air inlet pipe one 130, and is discharged into the air inlet pipe two 210 through the air outlet pipe 150. The air inlet pipe two 210 discharges the dust into the dust collector 220, and the dust collector 220 filters the dust, so that the dust removal operation is completed (the negative pressure fan 140 and the dust collector 220 are prior art, and their working principles and structures are not described here). During use, the negative pressure air cover 110 can effectively cover the dust generation area of the gypsum calcining device. Since the dust discharge connection of the gypsum calcining device is in a negative pressure state through the negative pressure fan 140, when the negative pressure fan 140 works, the dust-containing gas generated by the gypsum calcining device is actively sucked, and the escaped dust is quickly sucked, so that the dust capture ability is greatly enhanced, and the diffusion of dust in the workshop is reduced.

[0029] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A negative pressure dust removal device, comprising: The negative pressure component and the dust removal component are characterized in that the negative pressure component (100) is connected to the dust removal component for calcining gypsum via a negative pressure fan (140), and the negative pressure component (100) includes: a negative pressure hood (110) and a negative pressure fan (140). The surface of the negative pressure hood (110) is sealed with a filter element by a mounting slot (111). The rear surface of the negative pressure hood (110) is fitted with an air inlet pipe (130) by a connector (120). The air inlet pipe (130) is connected to the air inlet end of the negative pressure fan (140). The air outlet end of the negative pressure fan (140) is fitted with an air outlet pipe (150). The dust removal assembly includes: an air inlet pipe 2 (210) and a dust collector (220). The air inlet pipe 2 (210) is installed on the outer surface of the air outlet pipe (150). The end of the air inlet pipe 2 (210) away from the air outlet pipe (150) is connected to the inlet end of the dust collector (220). The lower end of the dust collector (220) is provided with a discharge end (230).

2. The negative pressure dust removal device as described in claim 1, characterized in that: The negative pressure hood (110) is connected to the dust outlet of the gypsum calcination device. A sealing ring is provided at the connection between the negative pressure hood (110) and the gypsum calcination device. An installation slot (111) with sealing rubber is provided on the upper surface of the negative pressure hood (110). The filter element includes: a mounting frame (300), a filter screen (320), and a handle (310). The handle (310) is installed on the upper surface of the mounting frame (300).

3. The negative pressure dust removal device as described in claim 2, characterized in that: The inside of the mounting frame (300) is equipped with a filter screen, and the inside of the negative pressure hood (110) is sealed with a filter screen with a mounting frame (300) through a mounting slot (111). An air inlet pipe (130) is installed on the side of the negative pressure hood (110) away from the gypsum calcination shaft through a connector (120).

4. The negative pressure dust removal device as described in claim 1, characterized in that: An air outlet pipe (150) is installed on the air outlet end of the upper surface of the negative pressure fan (140). A sealing ring is provided at the connection between the negative pressure fan (140) and the first air inlet pipe (130). A sealing ring is provided at the connection between the air outlet pipe (150) and the air outlet end. An air inlet pipe (210) is installed on the outer surface of the air outlet pipe (150).

5. The negative pressure dust removal device as described in claim 4, characterized in that: The second air inlet pipe (210) is matched with the first air inlet pipe (130) in terms of specifications. The end of the second air inlet pipe (210) away from the outlet pipe (150) is connected to the inlet end of the dust collector (220). The dust collector (220) is a bag dust collector (220). The discharge end (230) is installed at the center of the lower surface of the dust collector (220).

6. The negative pressure dust removal device as described in claim 5, characterized in that: One-way valves are provided at the connection points of the first air inlet pipe (130), the second air inlet pipe (210), and the air outlet pipe (150).

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