Packaging machine exhaust device and packaging machine

Abstract

The utility model relates to powder packing technical field discloses a kind of exhaust device and packaging machine of packaging machine, and packaging machine exhaust device includes exhaust pipe, suction mechanism, dust removal pipe and backflushing pipe, exhaust pipe has first end and second end, first end is used to connect in the position to be exhausted;Suction mechanism is equipped with air inlet and air outlet, air inlet connects the second end of exhaust pipe;Dust removal pipe is connected to air outlet;One end of backflushing pipe is connected to the side of exhaust pipe close to air inlet, the other end is used to connect compressed gas source.Exhaust, suction mechanism suction gas flows from exhaust pipe to dust removal pipe;When backflushing, the compressed gas of compressed gas source flows out to exhaust pipe and dust removal pipe through backflushing pipe.The utility model is blown by compressed gas source to backflushing pipe after exhausting, and compressed gas flows out to exhaust pipe and dust removal pipe through backflushing pipe, and exhaust pipe and dust removal pipe are purged, to avoid the material carried in suction gas to remain in exhaust pipe and dust removal pipe, long-term accumulation and influence exhaust effect.

Description

Technical Field

[0001] This utility model relates to the field of powder packaging technology, and in particular to an exhaust device for a packaging machine and a packaging machine. Background Technology

[0002] During starch filling, air can enter the packaging bag and mix with the starch, making it difficult for the air to escape and separate. This causes the packaging bag to swell and not fill completely. This not only affects the weight of each packaged product, but also, after sealing, the trapped air can be compressed during stacking, leading to bag breakage and posing a significant safety risk. Currently, negative pressure fans are generally used for exhaust. The fan is continuously running, and the valve is opened during feeding to create negative pressure and draw air out of the packaging bag. However, when using negative pressure fans for exhaust, material can easily remain in the ductwork. Prolonged accumulation of material in the ductwork will affect the suction and exhaust efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a packaging machine exhaust device and packaging machine to solve the problem that material is easily left in the air duct when using a negative pressure fan for exhaust in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a packaging machine exhaust device, comprising:

[0006] An exhaust pipe has a first end and a second end, the first end being used to connect to the position where exhaust is to be performed;

[0007] The suction mechanism is provided with an air inlet and an air outlet, wherein the air inlet is connected to the second end;

[0008] Dust collection pipe, connected to the air outlet; and

[0009] The backflush pipe has one end connected to the side of the exhaust pipe near the air inlet, and the other end is used to connect to a compressed air source.

[0010] During exhaust, the suction mechanism draws gas from the exhaust pipe to the dust removal pipe; during backflushing, the compressed gas from the compressed gas source flows out through the backflushing pipe to the exhaust pipe and the dust removal pipe.

[0011] In some embodiments, the suction mechanism includes:

[0012] The Venturi injector is provided with a power source inlet, and both the air inlet and the air outlet are located in the Venturi injector;

[0013] The air intake pipe has one end connected to the power source inlet and the other end used to connect to the compressed air source;

[0014] A control valve is installed in the intake pipe.

[0015] In some embodiments, the system further includes a flow detection element and a flow regulating valve, wherein the flow detection element and the flow regulating valve are sequentially disposed on the exhaust pipe along the exhaust direction, the flow detection element is used to detect the exhaust flow rate of the exhaust pipe, and the flow regulating valve is used to regulate the exhaust flow rate of the exhaust pipe.

[0016] In some embodiments, a controller is also included, wherein the flow detection element and the flow regulating valve are electrically connected to the controller.

[0017] In some embodiments, a pressure relief valve is also included, connected to the side of the exhaust pipe near the air inlet.

[0018] In some embodiments, a controller is also included, and the pressure relief valve is electrically connected to the controller.

[0019] In some embodiments, a four-way connector is further included, the four-way connector having a first interface, a second interface, a third interface and a fourth interface, the first interface being connected to the exhaust pipe, the second interface being connected to the air inlet, the third interface being connected to the backflush pipe, and the fourth interface being connected to the pressure relief valve.

[0020] In some embodiments, the first interface and the second interface are coaxially arranged, the third interface and the fourth interface are coaxially arranged, and the axis of the first interface and the second interface is perpendicular to the axis of the third interface and the fourth interface.

[0021] This utility model also provides a packaging machine, including a packaging machine body and a packaging machine exhaust device as described above. The packaging machine body is provided with a packaging bag mounting position for mounting packaging bags. The first end of the exhaust pipe is located above and close to the packaging bag mounting position.

[0022] In some embodiments, the packaging machine body is provided with a feeding hopper for feeding materials into the packaging bag, and the dust removal pipe is connected to the feeding hopper.

[0023] Compared with the prior art, the advantages of this utility model embodiment of the packaging machine exhaust device and packaging machine are as follows:

[0024] The packaging machine exhaust device of this utility model has the first end of the exhaust pipe positioned at the exhaust point, and the second end connected to a suction mechanism. The suction mechanism connects the exhaust pipe and a dust removal pipe. A backflush pipe is also connected to the exhaust pipe, and a compressed air source is connected to the backflush pipe. During exhaust, the suction mechanism draws gas from the exhaust pipe to the dust removal pipe, and then discharges it through the dust removal pipe, thus achieving the exhaust operation at the exhaust point. After the exhaust operation is completed, compressed air is blown into the backflush pipe through the compressed air source. The compressed gas flows out through the backflush pipe to the exhaust pipe and the dust removal pipe, purifying them and preventing material carried in the suction gas from remaining in the exhaust pipe and dust removal pipe, thus avoiding long-term accumulation and affecting the exhaust effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the exhaust device of the packaging machine according to an embodiment of the present invention;

[0026] Figure 2 This is a partial view of the exhaust device of the packaging machine according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the packaging machine described in an embodiment of this utility model.

[0028] Numbering on the map:

[0029] 100. Packaging machine exhaust device,

[0030] 1. Exhaust pipe; 11. First end; 12. Second end; 2. Suction mechanism; 21. Venturi injector; 211. Air inlet; 212. Air outlet; 213. Power source inlet; 22. Inlet pipe; 23. Control valve; 3. Dust removal pipe; 4. Backflush pipe; 5. Flow detection element; 6. Flow regulating valve; 7. Pressure relief valve; 8. Four-way connector; 81. First interface; 82. Second interface; 83. Third interface; 84. Fourth interface; 9. Control cabinet.

[0031] 200. Packaging machine body; 2001. Packaging bag installation position; 201. Packaging bag; 202. Feeding hopper; 203. Weighing device. Detailed Implementation

[0032] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0035] See Figure 1 and Figure 2 As shown, this utility model embodiment provides a packaging machine exhaust device 100, including an exhaust pipe 1, a suction mechanism 2, a dust removal pipe 3, and a backflush pipe 4. The exhaust pipe 1 has a first end 11 and a second end 12. The first end 11 is used to connect to the position to be vented, for example, the position to be vented can be a position near the bag opening of the packaging bag 201, so as to facilitate the extraction of air from the packaging bag 201. The suction mechanism 2 has an air inlet 211 and an air outlet 212. The air inlet 211 is connected to the second end 12 of the exhaust pipe 1. The dust removal pipe 3 is connected to the air outlet 212. One end of the backflush pipe 4 is connected to the side of the exhaust pipe 1 near the air inlet 211, and the other end of the backflush pipe 4 is used to connect to a compressed air source, which provides compressed air to the backflush pipe 4. During exhaust, the suction mechanism 2 draws gas from the exhaust pipe 1 to the dust removal pipe 3; during backflush, the compressed gas from the compressed air source flows out through the backflush pipe 4 to the exhaust pipe 1 and the dust removal pipe 3.

[0036] This invention forms an exhaust path through an exhaust pipe 1, a suction mechanism 2, and a dust removal pipe 3. The suctioned gas is discharged through the dust removal pipe 3, completing the exhaust operation. This exhaust operation ensures that the packaging bag 201 is filled and flat, preventing breakage. After the exhaust operation is completed, compressed air is blown into the backflush pipe 4. The compressed gas flows out through the backflush pipe 4 to the exhaust pipe 1 and the dust removal pipe 3, purging them and promptly removing any residual material. This prevents material carried in the suctioned gas from accumulating in the exhaust pipe 1 and dust removal pipe 3, thus avoiding long-term accumulation and affecting the exhaust effect.

[0037] See Figure 1 and Figure 2 As shown, in some embodiments, the suction mechanism 2 includes a Venturi injector 21, an air inlet pipe 22, and a control valve 23. An air inlet 211 and an air outlet 212 are both located on the Venturi injector 21, which also has a power source inlet 213. One end of the air inlet pipe 22 is connected to the power source inlet 213, and the other end is used to connect to a compressed air source. The control valve 23 is installed on the air inlet pipe 22 and controls the connection and disconnection between the air inlet pipe 22 and the compressed air source. When the control valve 23 is opened, the compressed air source provides compressed air to the air inlet pipe 22. This compressed air serves as the power source for the Venturi injector 21. Under the action of the Laval nozzle of the Venturi injector 21, a vacuum zone is generated in the injector chamber, thereby drawing air from the packaging bag 201 into the injector chamber through the exhaust pipe 1, and then spraying it into the dust removal pipe 3 for discharge, thus completing the exhaust operation. During backflushing, close control valve 23 to cut off the power source of Venturi injector 21. Using Venturi injector 21 for negative pressure extraction is particularly suitable for small-volume packaging, making it easier to control the exhaust volume. Furthermore, Venturi injector 21 uses compressed air as its power source, easily meeting explosion-proof requirements.

[0038] It should be noted that the intake pipe 22 and the backflush pipe 4 can be connected to the same compressed air source or to different compressed air sources.

[0039] See Figure 1 and Figure 2As shown, in some embodiments, the packaging machine exhaust device 100 further includes a flow detection element 5 and a flow regulating valve 6. The flow detection element 5 is used to detect the exhaust flow rate of the exhaust pipe 1, and the flow regulating valve 6 is used to regulate the exhaust flow rate of the exhaust pipe 1. The flow detection element 5 and the flow regulating valve 6 are sequentially arranged along the exhaust direction on the exhaust pipe 1. Based on the detection result of the flow detection element 5, the flow regulating valve 6 can be easily adjusted to control the exhaust volume, ensuring a smooth exhaust process and preventing excessive exhaust from carrying away powder material, which would affect the accurate weighing of the packaging. It also prevents insufficient exhaust, which could result in the packaging bag 201 being full but the powder material weight being insufficient, or the packaging bag 201 bulging and breaking after sealing. The flow detection element 5 is a flow meter.

[0040] See Figure 1 and Figure 2 As shown, in some embodiments, the packaging machine exhaust device 100 further includes a controller, with a flow detection element 5 and a flow regulating valve 6 electrically connected to the controller. The flow detection element 5 detects the exhaust flow rate in the exhaust pipe 1. Based on the detection result of the flow detection element 5, the controller controls the flow regulating valve 6 to adjust the exhaust flow rate in the exhaust pipe 1, thereby achieving automatic adjustment of the exhaust volume. The controller is located inside the control cabinet 9.

[0041] See Figure 1 and Figure 2 As shown, in some embodiments, the packaging machine exhaust device 100 further includes a pressure relief valve 7, which is connected to the side of the exhaust pipe 1 near the air inlet 211. The pressure relief valve 7 is used to release pressure in a timely manner when the pressure inside the device is high, reducing safety risks. Furthermore, when no venting is required during the initial filling of the packaging bag 201, the pressure relief valve 7 can maintain constant pressure in the exhaust pipe 1, preventing interference with packaging weighing. To achieve automatic control of the pressure relief valve 7, it is electrically connected to a controller.

[0042] See Figure 1 and Figure 2 As shown, in some embodiments, the packaging machine exhaust device 100 further includes a four-way connector 8, which has a first interface 81, a second interface 82, a third interface 83, and a fourth interface 84. The first interface 81 is connected to the exhaust pipe 1, the second interface 82 is connected to the air inlet 211, the third interface 83 is connected to the backflush pipe 4, and the fourth interface 84 is connected to the pressure relief valve 7. The four-way connector 8 facilitates the connection of the exhaust pipe 1, the backflush pipe 4, the pressure relief valve 7, and the suction mechanism 2. In some embodiments, a flow regulating valve 6 is connected between the second end 12 of the exhaust pipe 1 and the first interface 81 to more precisely regulate the amount of exhaust entering the suction mechanism 2.

[0043] See Figure 1 and Figure 2As shown, in some embodiments, the first interface 81 and the second interface 82 are coaxially arranged, and the third interface 83 and the fourth interface 84 are coaxially arranged, with the axes of the first interface 81 and the second interface 82 perpendicular to the axes of the third interface 83 and the fourth interface 84. Taking the first interface 81 as an example, the axis is the central axis extending from the first interface 81 in the axial direction. This arrangement minimizes dead zones and prevents airborne powder from clogging the system. Figure 1 and Figure 2 As shown, the axes of the first interface 81 and the second interface 82 are set vertically, while the axes of the third interface 83 and the fourth interface 84 are set horizontally.

[0044] See Figure 3 As shown, this utility model also provides a packaging machine, including a packaging machine body 200 and a packaging machine exhaust device 100 as described above. The packaging machine body 200 is provided with a packaging bag mounting position 2001, which is used to mount a packaging bag 201 to supply powder material (e.g., starch) into the packaging bag 201, thereby packaging the powder material. The first end 11 of the exhaust pipe 1 is located above and close to the packaging bag mounting position 2001, such that the first end 11 is close to the bag opening of the packaging bag 201 at the packaging bag mounting position 2001. The opening of the first end 11 of the exhaust pipe 1 is arranged downward and towards the packaging bag mounting position 2001, such that the opening of the exhaust pipe 1 is directly opposite the bag opening of the packaging bag 201.

[0045] The packaging machine's exhaust device 100 promptly removes air and airborne powder from the packaging bag 201 during the packaging process, preventing dust from overflowing and affecting the environment when the packaging bag 201 is sealed, as well as preventing a large amount of residual air in the packaging bag 201 from affecting the actual weight of the product and posing a risk of bloating and bursting.

[0046] See Figure 3 As shown, the packaging machine body 200 is equipped with a feeding hopper 202, which is used to feed material into the packaging bag 201. The dust removal pipe 3 is connected to the feeding hopper 202. The suction mechanism 2 extracts the air and powder carried in the air from the packaging bag 201 to the dust removal pipe 3, and discharges it into the feeding hopper 202 for recycling, thus avoiding material waste.

[0047] The packaging machine body 200 is also equipped with a weighing device 203, which is located above the packaging bag installation position 2001. The weighing device 203 is used to weigh the powder material entering the packaging bag 201.

[0048] It should be noted that the packaging machine body 200 also includes a device for clamping the bag opening of the packaging bag 201 and a device for conveying powder materials, etc., which will not be described in detail in this utility model.

[0049] The working process of this utility model is as follows:

[0050] Powder material is supplied to packaging bag 201 through hopper 202. In the initial stage of bagging, the pressure relief valve 7 maintains normal pressure in exhaust pipe 1. In the later stage of bagging, the venturi injector 21 uses negative pressure to draw gas from packaging bag 201, causing the gas to enter dust collection pipe 3 through exhaust pipe 1 and then exit back to hopper 202. During gas extraction, the exhaust volume is adjusted by the flow detection element 5 and the flow regulating valve 6 to prevent insufficient weight or bloating of packaging bag 201. During exhaust, some of the airborne powder material enters exhaust pipe 1 and dust collection pipe 3 with the gas, leaving material residue in these pipes. After exhaust is complete, compressed air is supplied to backflush pipe 4. The compressed air then enters exhaust pipe 1 and dust collection pipe 3 through backflush pipe 4, blowing out any remaining material.

[0051] In summary, this utility model embodiment provides a packaging machine exhaust device 100 and a packaging machine. The first end 11 of the exhaust pipe 1 is positioned at the exhaust point, and the second end 12 of the exhaust pipe 1 is connected to a suction mechanism 2. The suction mechanism 2 connects the exhaust pipe 1 and a dust removal pipe 3. A backflush pipe 4 is also connected to the exhaust pipe 1, and a compressed air source is connected to the backflush pipe 4. During exhaust, the suction mechanism 2 draws gas from the exhaust pipe 1 to the dust removal pipe 3, and then discharges it through the dust removal pipe 3, thus achieving the exhaust operation at the exhaust point. After the exhaust operation is completed, compressed air is blown into the backflush pipe 4. The compressed gas from the compressed air source flows out through the backflush pipe 4 to the exhaust pipe 1 and the dust removal pipe 3, thus purifying the exhaust pipe 1 and the dust removal pipe 3. This prevents material carried in the suction gas from remaining in the exhaust pipe 1 and the dust removal pipe 3, which would accumulate over time and affect the exhaust effect.

[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A packaging machine exhaust device, characterized in that, include: An exhaust pipe (1) has a first end (11) and a second end (12), the first end (11) being used to connect to the exhaust position; The suction mechanism (2) is provided with an air inlet (211) and an air outlet (212), wherein the air inlet (211) is connected to the second end (12); Dust removal pipe (3), connected to the air outlet (212); and The backflush pipe (4) is connected at one end to the side of the exhaust pipe (1) near the air inlet (211), and at the other end to the compressed air source. During exhaust, the suction mechanism (2) draws gas from the exhaust pipe (1) to the dust removal pipe (3); during backflushing, the compressed gas from the compressed gas source flows out through the backflushing pipe (4) to the exhaust pipe (1) and the dust removal pipe (3).

2. The packaging machine exhaust device according to claim 1, characterized in that, The suction mechanism (2) includes: The Venturi injector (21) is provided with a power source inlet (213), and the air inlet (211) and the air outlet (212) are both located in the Venturi injector (21); The intake pipe (22) is connected at one end to the power source inlet (213) and at the other end to the compressed air source; A control valve (23) is installed on the intake pipe (22).

3. The packaging machine exhaust device according to claim 1, characterized in that, It also includes a flow detection element (5) and a flow regulating valve (6). The flow detection element (5) and the flow regulating valve (6) are arranged sequentially along the exhaust direction on the exhaust pipe (1). The flow detection element (5) is used to detect the exhaust flow of the exhaust pipe (1), and the flow regulating valve (6) is used to regulate the exhaust flow of the exhaust pipe (1).

4. The packaging machine exhaust device according to claim 3, characterized in that, It also includes a controller, and the flow detection element (5) and the flow regulating valve (6) are electrically connected to the controller.

5. The packaging machine exhaust device according to claim 1, characterized in that, It also includes a pressure relief valve (7) connected to the side of the exhaust pipe (1) near the air inlet (211).

6. The packaging machine exhaust device according to claim 5, characterized in that, It also includes a controller, and the pressure relief valve (7) is electrically connected to the controller.

7. The packaging machine exhaust device according to claim 5, characterized in that, It also includes a four-way connector (8), which has a first interface (81), a second interface (82), a third interface (83) and a fourth interface (84). The first interface (81) is connected to the exhaust pipe (1), the second interface (82) is connected to the air inlet (211), the third interface (83) is connected to the backflush pipe (4), and the fourth interface (84) is connected to the pressure relief valve (7).

8. The packaging machine exhaust device according to claim 7, characterized in that, The first interface (81) and the second interface (82) are coaxially arranged, the third interface (83) and the fourth interface (84) are coaxially arranged, and the axis of the first interface (81) and the second interface (82) is perpendicular to the axis of the third interface (83) and the fourth interface (84).

9. A packaging machine, characterized in that, The packaging machine includes a packaging machine body (200) and a packaging machine exhaust device as described in any one of claims 1-8. The packaging machine body (200) is provided with a packaging bag mounting position (2001) for mounting a packaging bag (201). The first end (11) of the exhaust pipe (1) is located above and close to the packaging bag mounting position (2001).

10. The packaging machine according to claim 9, characterized in that, The packaging machine body (200) is provided with a feeding hopper (202), which is used to feed material into the packaging bag (201), and the dust removal pipe (3) is connected to the feeding hopper (202).

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