Automatic soot blowing device for cleaning packaging bag

Abstract

The utility model relates to the technical field of automatic soot blowing devices, in particular to an automatic soot blowing device for cleaning packaging bags, which comprises a control unit, a conveying mechanism, an air blowing mechanism and a dust collecting mechanism, the air blowing mechanism and the dust collecting mechanism are respectively arranged on two sides of the conveying mechanism, and the control unit controls the air blowing mechanism and the dust collecting mechanism to work. The conveying mechanism is used for conveying packaging bags, the blowing mechanism comprises a gas storage tank, an adapter, a first blowing gun head and a second blowing gun head, the adapter is arranged on one side of the gas storage tank, and the first nozzle is arranged at the outlet end of the adapter and faces the dust collecting mechanism. According to the automatic dust blowing device, the first nozzle, the first air blowing gun head and the second air blowing gun head on the air blowing mechanism blow dust in the middle and on the two sides of a packaging bag into the dust collecting mechanism, and the dust is subjected to multi-stage filtration through the dust collecting mechanism, so that the dust is discharged into the atmosphere after reaching the discharge standard; and the pollution to the environment caused by large-area dust is effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of automatic dust blowing devices, specifically an automatic dust blowing device for cleaning packaging bags. Background Technology

[0002] Automatic bag packaging machines can automatically package granular materials. The packaging bags are automatically packaged, slit, conveyed, and palletized on the production line.

[0003] However, during the packaging process, due to factors such as poor dust collection efficiency of the built-in system, inadequate sealing, and contamination of the conveyor belt, a small amount of dust adheres to the finished packaging bags. This dust is conveyed along the conveyor belt and eventually enters the palletizer, becoming finished products for shipment. This not only affects product quality but also causes problems for subsequent equipment cleaning, and also leads to environmental pollution, which in turn harms the health of operators. Therefore, there is an urgent need to design an automatic dust blowing device for cleaning packaging bags to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic dust blowing device for cleaning packaging bags, which solves the problem mentioned above that the dust on the packaging bags cannot be removed by the dust collection device built into the packaging machine during the packaging process, resulting in poor product quality and making the packaging machine difficult to clean later.

[0005] To solve the above-mentioned technical problems, this utility model provides an automatic dust blowing device for cleaning packaging bags, including a control unit, a conveying mechanism, and an air blowing mechanism and a dust collection mechanism respectively disposed on both sides of the conveying mechanism. The control unit controls the operation of the air blowing mechanism and the dust collection mechanism, and the conveying mechanism is used for transporting the packaging bags.

[0006] The blowing mechanism includes a gas storage tank, an adapter, a first blowing nozzle, and a second blowing nozzle. The adapter is located on one side of the gas storage tank, and a first nozzle is provided at the outlet end of the adapter, with the first nozzle facing the dust collection mechanism. The first blowing nozzle and the second blowing nozzle are respectively installed on both sides of the adapter through adjusting pipes. The adjusting pipes are connected to the inner cavity of the adapter and the inner cavity of the gas storage tank. Both the first blowing nozzle and the second blowing nozzle have a blade spray structure.

[0007] Furthermore, the dust collection mechanism includes a mounting frame, a collection hopper, an induced draft fan, several axial flow fans, and a filter screen. The collection hopper is disposed within the mounting frame, and its dust outlet extends through the bottom plate of the mounting frame. The induced draft fan is disposed on the top of the mounting frame via an induced draft pipe, and the induced draft pipe communicates with the inner cavity of the collection hopper. A fixing plate is provided at one end of the induced draft pipe, and several filters are embedded in the fixing plate. Each filter is provided with a first solenoid valve, and a compressed gas delivery pipe passes through its side wall. The end of the compressed gas delivery pipe that enters the filter is connected to a second nozzle, and a filter element is installed inside the filter.

[0008] Several axial flow fans are arranged side by side at one end of the mounting frame and are installed at the inlet of the collection hopper and communicate with the inner cavity of the collection hopper. Several filter screens are spaced apart in the collection hopper and their tops are fixedly connected to the inner top surface of the mounting frame through a reinforcing frame. The bottom of the filter screen near the upper outlet of the collection hopper is fixed to the inner wall of the collection hopper.

[0009] Furthermore, the number of the aforementioned axial flow fans is at least two.

[0010] Furthermore, the number of said filters is four.

[0011] Furthermore, the blade spray structure includes a gun head body and a blade-type nozzle. The gun head body is threadedly connected to the outlet end of the regulating pipe. The blade-type nozzle is eccentrically positioned with respect to the gun head body, and the two are integrally formed. The spray range of the blade-type nozzle is 15°-45°.

[0012] Furthermore, the conveying mechanism is equipped with a weighing sensing mechanism, which is connected to the control unit.

[0013] Furthermore, a pressure sensor is installed on the gas storage tank, and the pressure sensor is connected to the control unit.

[0014] Furthermore, both the adapter and the regulating pipe are equipped with a second solenoid valve, which is connected to the control unit.

[0015] Furthermore, the control unit is also equipped with a low-pressure alarm module, a high-pressure alarm module, and a weighing sensor interlock module.

[0016] Furthermore, the adapter and the first nozzle are integrally formed.

[0017] The beneficial effects of this utility model are as follows: The automatic dust blowing device of this utility model is designed with air blowing mechanism and dust collection mechanism symmetrically arranged on both sides of the conveying mechanism of the packaging bag. The first nozzle, first air blowing head and second air blowing head on the air blowing mechanism blow the dust in the middle and sides of the packaging bag into the dust collection mechanism. The dust collection mechanism performs multi-stage filtration so that it meets the emission standards before being discharged into the atmosphere. This effectively prevents the pollution of the environment caused by large-area dust and can also effectively remove dust from the packaging bag and improve the cleanliness of the packaging bag.

[0018] The dust collection mechanism allows dust blown by the air blowing mechanism to be transported to the collection hopper by an axial flow fan, and then intercepted by several filters in the collection hopper. The multi-stage filters play a role in reducing wind speed and physically intercepting the dust. Most of the dust particles are transported and collected through the dust outlet at the bottom of the collection hopper, while the fine dust particles are filtered by the filter under the suction of the induced draft fan before entering the induced draft fan and being transported to the atmosphere from the outlet of the induced draft fan. This adopts a graded screening method for graded collection and treatment of dust.

[0019] The first solenoid valve on the filter can be controlled by the control unit to control the opening and closing of the first solenoid valve to control the working status of each filter. When the first solenoid valve is closed, the compressed air drawn from the filter backflushes the filter and the filter element inside the filter, thereby effectively cleaning the dust deposited on the filter.

[0020] The blade spray structure of the first and second air gun heads can effectively spray and sweep both sides of the packaging bag, effectively preventing gas from blowing directly onto the packaging bag and damaging the sealing part of the packaging bag, thus avoiding side leakage of the packaging bag seal.

[0021] The weighing sensor on the conveying mechanism, the pressure sensor installed on the gas storage tank, the second solenoid valve on the adapter and regulating pipeline, and the low-pressure alarm module, high-pressure alarm module and weighing sensor interlock module in the control unit can effectively weigh the packaging bag and adjust the pressure in the gas storage tank based on the measured weight data. This adjusts the blowing force of the blowing mechanism, enabling the ash blowing process of the packaging bag to operate automatically, thereby reducing labor and labor costs. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an overall structural diagram of an automatic dust-blowing device for cleaning packaging bags according to this utility model;

[0024] Figure 2 This is a cross-sectional view of the dust collection mechanism of an automatic dust blowing device for cleaning packaging bags according to this utility model;

[0025] Figure 3 This utility model relates to an automatic dust-blowing device for cleaning packaging bags. Figure 2 Partial sectional view of AA in the image;

[0026] Figure 4 This is a side view of the axial flow fan of an automatic dust blowing device for cleaning packaging bags according to this utility model;

[0027] Figure 5 This is a cross-sectional view of an automatic dust-blowing device for cleaning packaging bags according to this utility model;

[0028] Figure 6 This is a structural diagram of the blade-type nozzle of an automatic dust-blowing device for cleaning packaging bags according to this utility model;

[0029] Figure 7 This is a front view of the blade-type nozzle of an automatic dust-blowing device for cleaning packaging bags according to this utility model;

[0030] In the diagram: 1-Control unit, 2-Conveying mechanism, 3-Blowing mechanism, 4-Dust collection mechanism, 5-Packaging bag, 31-Gas storage tank, 32-Adapter, 33-First blowing gun head, 34-Second blowing gun head, 35-First nozzle, 36-Adjusting pipe, 41-Mounting bracket, 42-Collection hopper, 43-Exhaust fan, 44-Axial flow fan, 45-Filter screen, 46-Exhaust duct, 47-Fixing plate, 48-Filter, 49-First solenoid valve, 50-Second nozzle, 341-Gun head body, 342-Blade nozzle, 421-Dust outlet, 422-Inlet, 423-Outlet. Detailed Implementation

[0031] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In one specific embodiment of this utility model, such as Figures 1-7As shown, an automatic dust-blowing device for cleaning packaging bags is disclosed, including a control unit 1, a conveying mechanism 2, and an air-blowing mechanism 3 and a dust-collecting mechanism 4 respectively disposed on both sides of the conveying mechanism 2. The control unit 1 controls the operation of the air-blowing mechanism 3 and the dust-collecting mechanism 4, and the conveying mechanism 2 is used for conveying the packaging bags 5.

[0033] The blowing mechanism 3 includes a gas storage tank 31, a connector 32, a first blowing nozzle and a second blowing nozzle. The connector 32 is located on one side of the gas storage tank 31. The first nozzle 35 is located at the outlet end of the connector 32 and faces the dust collection mechanism 4. The first blowing nozzle and the second blowing nozzle are respectively installed on both sides of the connector 32 through an adjusting pipe 36. The adjusting pipe 36 is connected to the inner cavity of the connector 32 and the inner cavity of the gas storage tank 31. Both the first blowing nozzle and the second blowing nozzle are blade spray structures.

[0034] The blade spray structure of the first and second air gun heads can effectively spray and sweep both sides of the packaging bag 5, effectively preventing gas from being blown directly onto the packaging bag 5 and damaging the sealing part of the packaging bag 5, thus avoiding side leakage of the packaging bag 5.

[0035] The dust collection mechanism 4 includes a mounting frame 41, a collection hopper 42, an induced draft fan 43, several axial flow fans 44, and a filter screen 45. The collection hopper 42 is installed inside the mounting frame 41, and its dust outlet 421 passes through the bottom plate of the mounting frame 41 and extends out. A vibrator is installed on the collection hopper 42. The induced draft fan 43 is installed on the top of the mounting frame 41 through an induced draft pipe 46, and the induced draft pipe 46 communicates with the inner cavity of the collection hopper 42. A fixing plate 47 is provided at one end of the induced draft pipe 46, and several filters 48 are embedded in the fixing plate 47. In this embodiment, the filters 48 are preferably self-cleaning filters, and the number of filters 48 is four. Each filter 48 is provided with a first electromagnetic... Valve 49, and a compressed gas delivery pipe is provided on its side wall. The end of the compressed gas delivery pipe that enters the filter 48 is connected to a second nozzle 50. The other end of the compressed gas delivery pipe passes through the mounting bracket 41 and extends out to connect to the compressed gas system. A filter element is installed inside the filter 48. The setting of the first solenoid valve 49 on the filter 48 can control the working state of each filter 48 by controlling the opening and closing of the first solenoid valve 49 through the control unit. When the first solenoid valve 49 is closed, the compressed air drawn out from the filter 48 backflushs the filter 48 and the filter element inside the filter 48, thereby effectively backflushing and cleaning the dust deposited on the filter.

[0036] The number of axial flow fans 44 is at least two, and in this embodiment, four are preferred. The axial flow fans 44 are arranged side by side at one end of the mounting frame 41 and are installed at the inlet 422 of the collection hopper 42 and communicate with the inner cavity of the collection hopper 42. The filters 45 are spaced apart in the collection hopper 42 and their tops are fixedly connected to the inner top surface of the mounting frame 41 through a reinforcing frame. The bottom of the filters 45 near the upper outlet 423 of the collection hopper 42 is fixed to the inner wall of the collection hopper 42.

[0037] The blade spray structure includes a gun head body 341 and a blade nozzle 342. The gun head body 341 is threadedly connected to the outlet end of the regulating pipe 36. The blade nozzle 342 is eccentrically set with the gun head body 341, and the two are integrally formed. The spray range of the blade nozzle 342 is 15°-45°.

[0038] The dust collection mechanism 4 is designed so that the dust blown by the blowing mechanism 3 can be transported to the collection hopper 42 by the axial flow fan 44, and then intercepted by several filters 45 in the collection hopper 42. The multi-stage filters 45 play a role in reducing the wind speed and physically intercepting the dust. Most of the dust particles will be transported and collected through the dust outlet 421 at the bottom of the collection hopper 45. The fine dust particles will be filtered by the filter 48 under the suction of the induced draft fan 43 and then enter the induced draft fan 43, and be transported out from the outlet of the induced draft fan 43 for collection. The dust is collected and processed in a graded manner by using a graded screening method.

[0039] The conveying mechanism 2 is equipped with a weighing sensing mechanism, which is located at the bottom of the conveying mechanism 2 and is connected to the control unit 1; a pressure sensor is installed on the side wall of the gas storage tank 31 and is connected to the control unit 1; a second solenoid valve is installed on both the adapter 35 and the regulating pipe 36 and is connected to the control unit 1; the control unit 1 is also equipped with a low-pressure alarm module, a high-pressure alarm module and a weighing sensing interlock module.

[0040] The weighing sensor on the conveying mechanism 2, the pressure sensor installed on the gas storage tank 31, the second solenoid valve on the adapter 35 and the regulating pipe 36, and the low-pressure alarm module, high-pressure alarm module and weighing sensor interlock module in the control unit 1 can effectively weigh the packaging bag 5 through these control components, and adjust the pressure in the gas storage tank 31 according to the actual weight measurement data, thereby adjusting the blowing force of the blowing mechanism 3, so that the process of blowing dust off the packaging bag 5 can be automated, thereby reducing labor and labor costs.

[0041] The automatic dust blowing device of this utility model is designed with air blowing mechanism 3 and dust collection mechanism 4 symmetrically arranged on both sides of the conveying mechanism 2 of the packaging bag 5. The grippers on the air blowing mechanism 3 can clamp the packaging bag so that the first nozzle 35, the first air blowing head and the second air blowing head on the air blowing mechanism 3 can blow the dust in the middle and sides of the packaging bag 5 into the dust collection mechanism 4. The dust is then filtered through multiple stages by the dust collection mechanism 4 so that it meets the emission standards before being discharged into the atmosphere. This effectively prevents the pollution of the environment caused by large-area dust and can also effectively remove dust from the packaging bag 5, improving the cleanliness of the packaging bag 5.

[0042] The working process of this utility model is as follows:

[0043] The low-pressure alarm module and high-pressure alarm module in the control unit 1 are set with minimum low pressure and maximum high pressure values ​​for the gas. The packaging bag 5 is placed on the conveying mechanism 2, which weighs the packaging bag 5. The weighing mechanism sends the weighing data to the control unit 1. The control unit 1 then adjusts the opening of the second solenoid valve on the adapter 35 according to the measured weight data to regulate the pressure in the gas storage tank 31. At the same time, the packaging bag 5 is conveyed to the blowing mechanism 3 through the conveying mechanism 2. When it reaches the blowing mechanism 3, the first nozzle 35 on the adapter 35 blows dust off the packaging bag 5. At the same time, the control unit 1 opens the second solenoid valve on the regulating pipe 36 and controls its opening. It also adjusts the angle of the regulating pipe 36 to blow dust off both sides of the packaging bag 5.

[0044] The dust or particulate matter blown out from the three parts by the four axial flow fans 44 of the dust collection mechanism 4 is transported to the collection hopper 42. The dust or particulate matter is filtered step by step through several filter screens 45. Under the multi-stage obstruction of several filter screens 45, the wind speed is reduced, and most of the dust particles are blocked by the filter screens 45. During use, the filter screens 45 are periodically shaken off the dust deposited on the filter screens 45 by a vibrator. The blocked dust falls into the bottom of the collection hopper 42, and the gate of the dust outlet 421 of the collection hopper 42 is opened, so that it is transported from the dust outlet 421 to the first dust collection bag installed at the bottom, thereby ensuring good air passage on the filter screens 45.

[0045] Before starting the induced draft fan 43, the control unit opens the first solenoid valve 49 on the filter 48 that needs to be operated. With the first solenoid valve 49 open, a small amount of dust is drawn by the induced draft fan 43 and passes through the opened filter 48 before continuing to be transported towards the outlet of the induced draft fan 43, thereby filtering the dust. The dust and exhaust gas that are not completely filtered are then guided by the induced draft fan 43 and filtered again through the operating filter 48 before being discharged into the atmosphere, effectively preventing environmental pollution from causing pollution to the equipment.

[0046] After a period of dust collection, the control unit closes the first solenoid valve 49 on the previously working filter 48 and opens the first solenoid valve 49 on the filter 48 that has been self-cleaned and blown away. Compressed air is then supplied from the compressed gas delivery pipe to the second nozzle 50 and blown into the filter 48 from the second nozzle 50 to backflush the filter 48 and the filter element inside the filter 48 to remove the dust on the previously working filter 48, thereby increasing the service life of the filter 48. This allows multiple self-cleaning filters to be replaced in a cycle.

[0047] As the packaging bag 5 continues to be conveyed away from the conveying mechanism 2, the control unit 1 again controls the second solenoid valve on the adapter 35 and the regulating pipe 36 to close, so as to end the dust blowing operation.

[0048] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An automatic dust-blowing device for cleaning packaging bags, characterized in that, It includes a control unit (1), a conveying mechanism (2), and an air blowing mechanism (3) and a dust collection mechanism (4) respectively disposed on both sides of the conveying mechanism (2). The control unit (1) controls the operation of the air blowing mechanism (3) and the dust collection mechanism (4). The conveying mechanism (2) is used for the transfer of the packaging bag (5). The blowing mechanism (3) includes a gas storage tank (31), an adapter (32), a first blowing nozzle, and a second blowing nozzle. The adapter (32) is located on one side of the gas storage tank (31). The outlet end of the adapter (32) is provided with a first nozzle (35), and the first nozzle (35) is positioned facing the dust collection mechanism (4). The first blowing nozzle and the second blowing nozzle are respectively installed on both sides of the adapter (32) through an adjusting pipe (36). The adjusting pipe (36) is connected to the inner cavity of the adapter (32) and the inner cavity of the gas storage tank (31). Both the first blowing nozzle and the second blowing nozzle are blade spray structures.

2. The automatic dust-blowing device for cleaning packaging bags according to claim 1, characterized in that, The dust collection mechanism (4) includes a mounting frame (41), a collection hopper (42), an induced draft fan (43), several axial flow fans (44), and a filter screen (45). The collection hopper (42) is located inside the mounting frame (41), and its dust outlet (421) passes through the bottom plate of the mounting frame (41) and extends out. The induced draft fan (43) is located on the top of the mounting frame (41) through an induced draft pipe (46), and the induced draft pipe (46) is connected to the inner cavity of the collection hopper (42). A fixing plate (47) is provided at one end of the induced draft pipe (46), and several filters (48) are embedded on the fixing plate (47). Each filter (48) is provided with a first solenoid valve (49), and a compressed gas conveying pipe passes through its side wall. The end of the compressed gas conveying pipe that enters the filter (48) is connected to a second nozzle (50). A filter element is installed inside the filter (48). Several axial flow fans (44) are arranged side by side at one end of the mounting frame (41) and installed at the inlet (422) of the collection hopper (42) and communicating with the inner cavity of the collection hopper (42). Several filter screens (45) are spaced apart inside the collection hopper (42) and their tops are fixedly connected to the inner top surface of the mounting frame (41) through a reinforcing frame. The bottom of the filter screen (45) near the upper outlet (423) of the collection hopper (42) is fixed to the inner wall of the collection hopper (42).

3. The automatic dust-blowing device for cleaning packaging bags according to claim 2, characterized in that, The number of the aforementioned axial flow fans (44) is at least two.

4. The automatic dust-blowing device for cleaning packaging bags according to claim 2, characterized in that, The number of the filters (48) is four.

5. The automatic dust-blowing device for cleaning packaging bags according to claim 1, characterized in that, The blade spray structure includes a gun head body (341) and a blade nozzle (342). The gun head body (341) is threadedly connected to the outlet end of the regulating pipe (36). The blade nozzle (342) is eccentrically positioned with respect to the gun head body (341), and the two are integrally formed. The spray range of the blade nozzle (342) is 15°-45°.

6. The automatic dust-blowing device for cleaning packaging bags according to claim 1, characterized in that, The conveying mechanism (2) is equipped with a weighing sensing mechanism, which is connected to the control unit (1).

7. The automatic dust-blowing device for cleaning packaging bags according to claim 1, characterized in that, A pressure sensor is installed on the gas storage tank (31), and the pressure sensor is connected to the control unit (1).

8. An automatic dust-blowing device for cleaning packaging bags according to claim 1, characterized in that, Both the adapter (32) and the regulating pipe (36) are equipped with a second solenoid valve, which is connected to the control unit (1).

9. An automatic dust-blowing device for cleaning packaging bags according to claim 1, characterized in that, The control unit (1) is also equipped with a low-pressure alarm module, a high-pressure alarm module and a weighing induction interlock module.

10. An automatic dust-blowing device for cleaning packaging bags according to claim 1, characterized in that, The adapter (32) and the first nozzle (35) are integrally formed.

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