Centrifugal fan type reverse blowing ash and dust remover

Abstract

The utility model discloses a centrifugal fan type reverse-blowing ash-cleaning dust remover which comprises a centrifugal fan, an air outlet is formed in one end of the centrifugal fan, an air exhaust barrel is communicated with the air outlet, and a first cabin, a second cabin and a third cabin are sequentially arranged in the air exhaust barrel from the air outlet end to the outside. A first plate valve capable of being automatically opened is arranged between the first cabin and the second cabin, a cloth bag dust removal plate is arranged between the second cabin and the third cabin, and a second plate valve is arranged between the third cabin and the outer end of the exhaust cylinder. The filter bag is reversely blown to the second cabin through high-pressure air, so that the inner surface, where dust is gathered, of the filter bag is turned outwards and opened, meanwhile, dynamic knocking is formed between the filter bag and the first plate valve under the air blowing effect, dust and dirt on the inner surface of the filter bag can be ejected out through reverse blowing air and discharged through the dust discharging opening, and a filter part is effectively cleaned under mutual cooperation; shutdown and manual cleaning and dismounting are not needed, time and labor are saved, and production delay is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collectors, in particular to a centrifugal fan type reverse blowing dust cleaning dust collector. Background Technique

[0002] The centrifugal fan belongs to a kind of impeller machinery and is widely used in industry. Among them, the centrifugal ventilator is one of the commonly used devices in the dust removal ventilation system. When operating, it relies on the rotation of the impeller to form a negative pressure inside the fan, inhale the outside air and discharge the air through the impeller passage and the volute.

[0003] In practical applications, a cloth bag dust removal plate will be set at the position of the exhaust outlet according to actual needs, that is, the air with dust is filtered through a cloth bag, so that the air without or carrying a small amount of fine dust is discharged through the cloth bag filter element, so as to achieve the purpose of environmental protection emission. However, during the process of screening dust by the cloth bag, dust and dirt will gradually accumulate, and the cloth bag filter holes will be blocked accordingly. This will not only reduce the dust removal effect, but also increase the power consumption of the fan. Therefore, after working for a period of time, the machine will stop and the cloth bag dust removal plate will be cleaned and replaced manually. When cleaning, the adhered dust is mainly removed by shaking or knocking, which is not only time-consuming and laborious, but also may delay production. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. In this part, as well as in the abstract and the title of the specification of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this part, the abstract of the specification and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide a centrifugal fan type reverse blowing dust cleaning dust collector to solve the problem that in the existing dust collector device, after working for a period of time, the machine will stop and the cloth bag dust removal plate will be cleaned and replaced manually. When cleaning, the adhered dust is mainly removed by shaking or knocking, which is not only time-consuming and laborious, but also may delay production as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a centrifugal fan type reverse blowing dust cleaning dust collector, which includes a centrifugal fan. One end of the centrifugal fan has an exhaust port, and an exhaust duct is connected to the exhaust port. Inside the exhaust duct, there are successively a first chamber, a second chamber and a third chamber from the exhaust port end to the outside. A plate valve one that can be automatically opened is arranged between the first chamber and the second chamber. A cloth bag dust removal plate is arranged between the second chamber and the third chamber. There is a plate valve two between the third chamber and the outer end of the exhaust duct.

[0007] One side of the top of the first chamber is provided with an air inlet, the top of the third chamber is provided with an air return port, a diversion air chamber is communicated between the air inlet and the air return port, and a dust discharge port which can be opened and closed is arranged at the bottom of the second chamber;

[0008] Wherein, when the first plate valve rotates to the horizontal state, it can block the air inlet.

[0009] As a preferred scheme of a centrifugal fan type reverse blowing and dust cleaning dust collector of the present utility model, an air inlet is further arranged on one side of the centrifugal fan, and the air inlet is communicated with the air discharge port through a fan volute.

[0010] As a preferred scheme of a centrifugal fan type reverse blowing and dust cleaning dust collector of the present utility model, filter bags are distributed on one side of the third chamber where the bag dust removal plate is located, and the distance between the first plate valve and the bag dust removal plate is less than the length of the filter bags.

[0011] As a preferred scheme of a centrifugal fan type reverse blowing and dust cleaning dust collector of the present utility model, an electric butterfly valve is further arranged inside the dust discharge port.

[0012] As a preferred scheme of a centrifugal fan type reverse blowing and dust cleaning dust collector of the present utility model, a sealing gasket corresponding to the air inlet is further arranged on one side of the first chamber where the first plate valve is located.

[0013] As a preferred scheme of a centrifugal fan type reverse blowing and dust cleaning dust collector of the present utility model, a door plate corresponding to the bag dust removal plate is further arranged on the outer side of the exhaust duct, and a control box is further arranged on the outer side of the exhaust duct;

[0014] Wherein, the first plate valve and the second plate valve are in an electric or pneumatic driving form, and a signal connection is arranged between the driving control ends of the first plate valve and the second plate valve and the control box.

[0015] Compared with the prior art, the beneficial effect of the present utility model is that: for this centrifugal fan type reverse blowing and dust cleaning dust collector, when it is necessary to clean the bag dust removal plate, the first plate valve originally blocking the air inlet will rotate to the vertical state, and the second plate valve will also rotate to the vertical state. The fan is started, and the high-pressure air flow introduced from the air discharge port will enter the third chamber through the air inlet, the diversion air chamber and the air return port. At this time, the third chamber is in a positive pressure state, and the high-pressure air will reverse blow the filter bags into the second chamber, so that the inner surface of the filter bags where the dust accumulates is turned outwards and opened. At the same time, under the action of the wind, a dynamic knocking is formed between the filter bags and the first plate valve, and the reverse blowing can push out the dust and dirt on the inner surface of the filter bags and discharge them through the dust discharge port. With the mutual cooperation, the filter elements can be effectively cleaned without stopping the machine and without manual cleaning, disassembly and replacement, which saves time and effort and avoids delaying production. Description of the Drawings

[0016] Figure 1 This is a schematic diagram of the overall external structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the exhaust duct of the present utility model;

[0018] Figure 3 This is a schematic diagram of the internal detailed structure of the exhaust duct of the present utility model.

[0019] In the figure: 100, centrifugal fan; 110, air outlet; 120, air inlet; 200, exhaust duct; 201, first chamber; 202, second chamber; 203, third chamber; 204, gas transmission port; 205, air return port; 210, first plate valve; 211, gasket; 220, bag dust removal plate; 221, filter bag; 230, second plate valve; 240, dust discharge port; 241, electric butterfly valve; 250, air guide chamber; 260, door panel; 300, control box. Specific embodiments

[0020] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings.

[0021] Secondly, the present utility model will be described in detail in combination with the schematic diagrams. When detailing the embodiments of the present utility model, for the convenience of description, the sectional views showing the device structure will be enlarged locally out of the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0022] In order to make the purpose, technical solution, and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0023] Figures 1 - 3 Shown is a schematic diagram of the entire structure of a centrifugal fan type reverse blowing and dust cleaning dust collector of the present utility model. Please refer to Figures 1 - 3, A centrifugal fan type reverse blowing and dust cleaning dust collector according to this embodiment includes a centrifugal fan 100. One end of the centrifugal fan 100 has an air outlet 110, and an exhaust duct 200 is connected to the air outlet 110. Inside the exhaust duct 200, there are a first chamber 201, a second chamber 202, and a third chamber 203 in sequence from the air outlet 110 end to the outside. A plate valve one 210 that can be automatically opened is provided between the first chamber 201 and the second chamber 202. A bag dust removal plate 220 is provided between the second chamber 202 and the third chamber 203. There is a plate valve two 230 between the third chamber 203 and the outer end of the exhaust duct 200. On one side of the top of the first chamber 201, there is an air supply port 204. On the top of the third chamber 203, there is a return air port 205. A diversion air chamber 250 is connected between the air supply port 204 and the return air port 205. A dust discharge port 240 that can be opened and closed is provided at the bottom of the second chamber 202. Among them, when the plate valve one 210 rotates to the horizontal state, it can block the air supply port 204.

[0024] An air inlet 120 is also provided on one side of the centrifugal fan 100, and the air inlet 120 communicates with the air outlet 110 through a fan volute. It can be understood that the centrifugal fan 100 drives the impeller to rotate at a high speed through the inside of the volute by a motor, and inhales the air source containing or possibly containing dust through the air inlet 120, and then sends it into the exhaust duct 200 through the air outlet 110. Filter bags 221 are distributed on one side of the bag dust removal plate 220 in the third chamber 203. The distance between the plate valve one 210 and the bag dust removal plate 220 is less than the length of the filter bags 221. Here, when the third chamber 203 is under positive pressure, the filter bags 221 on one side of the bag dust removal plate 220 will be pushed back to the second chamber 202, so that the inner surface of the filter bags 221 that accumulates dust is turned outwards and opened. Under the reverse blowing action of the wind, a dynamic knocking is formed between the filter bags 221 and the plate valve one 210. Repeating like this, the dust on the filter bags 221 can be effectively removed and peeled off. An electric butterfly valve 241 is also provided inside the dust discharge port 240. During the process of reverse blowing and dust cleaning, a large amount of peeled dust and excess air pressure can be discharged uniformly through the dust discharge port 240 after the electric butterfly valve 241 is opened, which is simple and reasonable. A sealing gasket 211 corresponding to the air supply port 204 is also provided on one side of the plate valve one 210 in the first chamber 201. When the plate valve one 210 rotates to the horizontal state, it can effectively block the air supply port 204 through the sealing gasket 211, so that the air discharged from the air outlet 110 can smoothly pass through the three chambers.

[0025] In this embodiment, when it is necessary to clean the dust removal bag plate 220, the first plate valve 210 originally blocking the air delivery port 204 will rotate to a vertical state, and the second plate valve 230 will also rotate to a vertical state. The fan is started, and the high-pressure air flow introduced from the air exhaust port 110 will enter the third chamber 203 through the air delivery port 204, the diversion air chamber 250, and the air return port 205. At this time, the third chamber 203 is in a positive pressure state, and the high-pressure air will blow the filter bag 221 back to the second chamber 202, causing the inner surface of the filter bag 221 where dust accumulates to turn outwards and open. At the same time, under the action of the wind, a dynamic knocking is formed between the filter bag 221 and the first plate valve 210, and the reverse blowing can push out the dust and dirt on the inner surface of the filter bag 221 and discharge it through the dust discharge port 240. With their mutual cooperation, the filter element can be effectively cleaned without stopping the machine and without manual cleaning and replacement, saving time and effort and avoiding delaying production.

[0026] It should be noted that in the normal use state, the first plate valve 210 and the second plate valve 230 are in a horizontal state, and the dust discharge port 240 is in a closed state. In this way, a direct connection state is formed between the first chamber 201, the second chamber 202, and the third chamber 203, so that it can operate normally.

[0027] A door panel 260 corresponding to the dust removal bag plate 220 is further provided on the outer side of the exhaust air cylinder 200, and a control box 300 is also provided on the outer side of the exhaust air cylinder 200. Among them, the first plate valve 210 and the second plate valve 230 are in an electric or pneumatic drive form, and the drive control ends of the first plate valve 210 and the second plate valve 230 are signal-connected to the control box 300. It can be understood that the control box 300 is the control unit of the entire dust cleaning and dust removal device. The staff can control each operating unit of the dust removal device through remote wiring, on-site control, or pre-setting methods, improving the convenience of using the device and saving time and being convenient.

[0028] In summary, for a centrifugal fan type reverse blowing dust cleaning and dust removal device of this embodiment, when it is necessary to clean the dust removal bag plate 220, the first plate valve 210 originally blocking the air delivery port 204 will rotate to a vertical state, and the second plate valve 230 will also rotate to a vertical state. The fan is started, and the high-pressure air flow introduced from the air exhaust port 110 will enter the third chamber 203 through the air delivery port 204, the diversion air chamber 250, and the air return port 205. At this time, the third chamber 203 is in a positive pressure state, and the high-pressure air will blow the filter bag 221 back to the second chamber 202, causing the inner surface of the filter bag 221 where dust accumulates to turn outwards and open. At the same time, under the action of the wind, a dynamic knocking is formed between the filter bag 221 and the first plate valve 210, and the reverse blowing can push out the dust and dirt on the inner surface of the filter bag 221 and discharge it through the dust discharge port 240. With their mutual cooperation, the filter element can be effectively cleaned without stopping the machine and without manual cleaning and replacement, saving time and effort.

[0029] Although the present utility model has been described above with reference to the embodiments, various improvements can be made thereto and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the features in the embodiments disclosed by the present utility model can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A centrifugal fan type reverse blow cleaning dust collector, characterized in that, It includes a centrifugal fan (100). One end of the centrifugal fan (100) has an air outlet (110). A ventilation duct (200) is connected to the air outlet (110). Inside the ventilation duct (200), there are successively a first chamber (201), a second chamber (202), and a third chamber (203) from the air outlet (110) end outwards. A first plate valve (210) that can be automatically opened is arranged between the first chamber (201) and the second chamber (202). A bag dust removal plate (220) is arranged between the second chamber (202) and the third chamber (203). There is a second plate valve (230) between the third chamber (203) and the outer end of the ventilation duct (200). On one side of the top of the first chamber (201), there is an air inlet (204). On the top of the third chamber (203), there is a return air outlet (205). A diversion air chamber (250) is connected between the air inlet (204) and the return air outlet (205). At the bottom of the second chamber (202), there is a dust discharge port (240) that can be opened and closed. Among them, when the first plate valve (210) rotates to the horizontal state, it can block the air inlet (204).

2. The centrifugal fan type reverse blowing dust cleaning dust collector according to claim 1, characterized in that: On one side of the centrifugal fan (100), there is also an air inlet (120), and the air inlet (120) communicates with the air outlet (110) through a fan volute.

3. The centrifugal fan type reverse blowing dust cleaning dust collector according to claim 1, wherein: Filter bags (221) are distributed on one side of the bag dust removal plate (220) in the third chamber (203). The distance between the first plate valve (210) and the bag dust removal plate (220) is less than the length of the filter bags (221).

4. The centrifugal fan type reverse air blowing dust collector according to claim 1, wherein: An electric butterfly valve (241) is also arranged inside the dust discharge port (240).

5. The centrifugal fan type reverse air blowing dust collector according to claim 1, characterized in that: On one side of the first plate valve (210) in the first chamber (201), there is also a sealing gasket (211) corresponding to the air inlet (204).

6. The centrifugal fan type reverse blowing dust cleaning dust collector according to claim 1, wherein: On the outer side of the ventilation duct (200), there is also a door plate (260) corresponding to the bag dust removal plate (220). On the outer side of the ventilation duct (200), there is also a control box (300). Among them, the first plate valve (210) and the second plate valve (230) are in an electric or pneumatic drive form, and the drive control ends of the first plate valve (210) and the second plate valve (230) are signal-connected to the control box (300).

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