Automatic powder cleaning and recycling equipment for powder food packaging production line

Abstract

The utility model discloses automatic powder cleaning and recycling equipment for a powder food packaging production line, which relates to the technical field of powder food packaging dust removal and comprises a funnel, a shell, an air inducing component and a purging component. The funnel is used for receiving powder; the shell is installed above the funnel, an annular air duct is arranged in the shell, a material passing hole is formed in the center of the shell and located above the funnel, powder can enter the funnel through the material passing hole, a plurality of first ventilation holes communicated with the annular air duct are formed in the inner wall of the material passing hole, and a filter screen is installed on the inner side of the material passing hole; the air inducing assembly is communicated with the annular air duct so as to extract air in the annular air duct; the purging assembly communicates with the annular air channel so as to introduce air into the annular air channel. The powder recycling device can automatically clean and recycle the collected powder.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal for powder food packaging, and particularly relates to an automatic powder cleaning and recycling device for a powder food packaging production line. Background Art

[0002] A powder packaging production line is a general term for equipment for packaging powder-like items. The powder packaging production line is used in the food industry for metering and packaging items such as protein powder, milk powder, soy milk powder, and coffee powder. Although food powder packaging production lines are widely used, there are still problems with current food powder packaging production lines. During the operation of the powder packaging production line, a large amount of dust is generated, and the existing dust removal equipment needs to be manually cleaned after absorbing dust, and the food powder collected by the dust removal equipment cannot be recycled. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an automatic powder cleaning and recycling device for a powder food packaging production line, which can automatically clean and recycle the collected powder.

[0004] An automatic powder cleaning and recycling device for a powder food packaging production line according to an embodiment of the first aspect of the utility model includes: a funnel, a housing, an air induction component, and a purging component. The funnel is used for receiving powder; the housing is installed above the funnel, an annular air duct is arranged inside the housing, a material passing hole is opened at the center of the housing, the material passing hole is located above the funnel, the powder can enter the funnel through the material passing hole, a plurality of first ventilation holes communicated with the annular air duct are arranged on the inner wall of the material passing hole, and a filter screen is installed inside the material passing hole; the air induction component is communicated with the annular air duct to extract air inside the annular air duct; the purging component is communicated with the annular air duct to introduce air into the annular air duct.

[0005] An automatic powder cleaning and recycling device for a powder food packaging production line according to an embodiment of the utility model has at least the following beneficial effects: the air induction component is communicated with the annular air duct to extract air inside the annular air duct; the powder material flows with the air and is intercepted by the filter screen, the purging component inputs air into the annular air duct to form a positive pressure in the annular air duct, which has an effect of back-blowing on the filter screen, blows the powder on the filter screen into the material passing hole, and then the powder enters the funnel under the action of gravity, realizing automatic cleaning and recycling of the collected powder.

[0006] According to some embodiments of the utility model, an annular baffle can be continuously connected to the housing, a plurality of second ventilation holes are opened on the annular baffle, and the annular baffle and the inner wall of the material passing hole cooperate to clamp the filter screen.

[0007] According to some embodiments of the present utility model, the diameter of the annular baffle is not greater than the diameter of the upper end of the funnel.

[0008] According to some embodiments of the present utility model, an annular air distribution pipe is provided below the housing, the annular air distribution pipe is communicated with the annular air duct through a plurality of intermediate pipes, and the air extraction assembly and the purging assembly are connected to the annular air duct through the annular air distribution pipe.

[0009] According to some embodiments of the present utility model, the air extraction assembly includes an air extraction fan and an air extraction valve, and the air extraction fan is communicated with the annular air distribution pipe through the air extraction valve.

[0010] According to some embodiments of the present utility model, the purging assembly includes a compressor, a compressed air tank and a purging valve, the compressed air tank is communicated with the annular air distribution pipe through the purging valve, and the compressor is connected to the compressed air tank to inject compressed air into the compressed air tank.

[0011] According to some embodiments of the present utility model, an auxiliary funnel extending downward into the funnel is provided in the material passing hole, and the upper edge of the upper end of the auxiliary funnel is connected to the upper end of the housing.

[0012] According to some embodiments of the present utility model, the size of the auxiliary funnel is smaller than the size of the funnel.

[0013] According to some embodiments of the present utility model, an installation cylinder is provided below the housing, and the size of the installation cylinder matches the size of the upper end of the funnel.

[0014] According to some embodiments of the present utility model, a sealing ring is provided on the outer side of the installation cylinder, and the sealing ring is used to seal the gap between the installation cylinder and the funnel.

[0015] According to an automatic powder cleaning and recycling device for a powder food packaging production line according to an embodiment of the present utility model, it has at least the following beneficial effects:

[0016] (1) The air extraction assembly is connected to the annular air duct to extract the air in the annular air duct. Under the push of the atmospheric pressure, the air in the auxiliary funnel flows downward into the funnel, and the air flowing downward in the auxiliary funnel can prevent powder leakage.

[0017] (2) The purging valve is quickly opened and closed to generate an air flow impact in the annular air duct, and the powder on the filter screen is blown into the funnel, automatically completing the cleaning and recycling.

[0018] (3) The annular baffle is detachably connected to the housing, which is convenient for removing the annular baffle to replace the damaged and aged filter screen.

[0019] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments, where:

[0021] Figure 1 is a schematic diagram of an installation structure of an embodiment of the present utility model;

[0022] Figure 2 is an exploded view of an embodiment of the present utility model

[0023] Figure 3 is a cross-sectional view of an embodiment of the present utility model

[0024] Figure 4 is Figure 3 an enlarged view of part A in

[0025] Figure 5 is a schematic diagram of an annular baffle of an embodiment of the present utility model

[0026] Figure 6 is a schematic diagram of a housing of an embodiment of the present utility model.

[0027] Reference Numerals in the Drawings:

[0028] Funnel 100;

[0029] Housing 200, annular air duct 201, material passing hole 210, filter screen 211, first ventilation hole 220;

[0030] Air induction assembly 300, air induction fan 310, air induction valve 320;

[0031] Blowing assembly 400, compressor 410, compressed air tank 420, blowing valve 430;

[0032] Annular baffle 500, second ventilation hole 510;

[0033] Annular air distribution pipe 600, intermediate pipe 610;

[0034] Auxiliary funnel 700;

[0035] Installation cylinder 800. Detailed Embodiments

[0036] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0037] In the description of the present utility model, it should be understood that with respect to the orientation description, such as up, down, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0038] In the description of the present utility model, "plurality" means more than two. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the description of the present utility model, unless otherwise clearly defined, words such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0040] Refer to Figures 1 to 6As shown in the figure, an automatic powder cleaning and recycling device for a powder food packaging production line according to an embodiment of the present utility model includes: a funnel 100, a housing 200, an air induction assembly 300, and a purging assembly 400. The funnel 100 is used to receive powder; the funnel 100 can also be used for temporary storage and conveying the powder to the next process. The funnel 100 can use the funnel 100 of the existing powder food packaging production line, that is, transform the funnel 100 on the existing production line to save costs. The housing 200 is installed above the funnel 100, and the material of the housing 200 is selected as food-grade 314 stainless steel to meet the production process requirements of contacting food. An annular air duct 201 is provided inside the housing 200, and the housing 200 is a hollow ring formed by welding stainless steel plates. A material passing hole 210 is opened in the center of the housing 200. The material passing hole 210 is located above the funnel 100, and the powder can enter the funnel 100 through the material passing hole 210. The material passing hole 210 provides a path for the food powder to pass through. A plurality of first ventilation holes 220 communicating with the annular air duct 201 are provided on the inner side wall of the material passing hole 210, and the plurality of first ventilation holes 220 are evenly distributed on the inner side wall of the material passing hole 210. A filter screen 211 is installed inside the material passing hole 210; the filter screen 211 is annular to completely cover the inner side wall of the material passing hole 210. The material passing hole 210 and the filter screen 211 are both vertically arranged, and the filter screen 211 is used to filter solid particles passing through the first ventilation holes 220. The air induction assembly 300 is connected to the annular air duct 201 to extract the air inside the annular air duct 201; when the air induction assembly 300 extracts the air inside the annular air duct 201, the air pressure inside the annular air duct 201 is less than the external atmospheric pressure. The air near the material passing hole 210 enters the annular air duct 201 from the first ventilation opening under the push of the atmospheric pressure. When the powder enters the funnel 100, a small part of the powder will be impacted and lifted into the air by the airflow. This part of the powder is intercepted by the filter screen 211 as it flows with the air, effectively improving the air quality near the packaging production line, and also reducing the powder deposited around the powder food packaging production line to keep the environment clean. The purging assembly 400 is connected to the annular air duct 201 to introduce air into the annular air duct 201. The powder intercepted by the filter screen 211 will always be adsorbed on the filter screen 211 under the action of negative pressure, making the resistance of the filter screen 211 to the airflow larger and larger. Therefore, it is necessary to close the air induction assembly 300 when the production line stops production, and turn on the purging assembly 400 to input air into the annular air duct 201 to form a positive pressure in the annular air duct 201, forming a back-blowing effect on the filter screen 211, blowing the powder on the filter screen 211 into the material passing hole 210, and then the powder enters the funnel 100 under the action of gravity. This part of the powder is not wasted but recycled. While facilitating the cleaning of the filter screen 211, it also avoids powder waste and effectively saves production costs.

[0041] It is foreseeable that when the purge assembly 400 is turned on, in order to prevent the powder from leaving the upper end of the material hole 210 with the air flow, a cover plate can be temporarily placed on the material hole 210. The cover plate is composed of a circular frame and a non-woven fabric arranged in the frame. The cover plate has a certain filtering ability.

[0042] Reference Figures 1 to 4 As shown, it can be understood that the housing 200 is bolted with an annular baffle 500, which is vertically arranged in the feeding hole 210, and a plurality of second ventilation holes 510 are opened on the annular baffle 500, and the plurality of second ventilation holes 510 are evenly distributed on the annular baffle 500, and the annular baffle 500 cooperates with the inner wall of the feeding hole 210 to clamp the filter screen 211. Since the second ventilation holes 510 are arranged on the annular baffle 500, the airflow through the filter screen 211 will not be affected. The annular baffle 500 is detachably connected to the housing 200 by bolts, so that the annular baffle 500 can be removed to replace the damaged and aged filter screen 211. The annular baffle 500 and the housing 200 can also be connected by means of snaps or the like to achieve the purpose of detachability.

[0043] Reference Figure 5 As shown, it can be understood that the diameter of the annular baffle 500 is not greater than the diameter of the upper end of the funnel 100. When the purge assembly 400 is turned on, the powder on the filter screen 211 will enter the material passage hole 210 from the second vent on the annular baffle 500. Since the diameter of the annular baffle 500 is not greater than the diameter of the upper end of the funnel 100, the powder leaving the second vent can directly fall into the funnel 100 when falling, avoiding the waste of powder.

[0044] Reference Figures 1 to 3 As shown, it can be understood that an annular air balancing duct 600 is provided below the housing 200, and the annular air balancing duct 600 is connected to the annular air duct 201 through four intermediate tubes 610, and the four intermediate tubes 610 are symmetrically arranged, and the induced draft assembly 300 and the purge assembly 400 are connected to the annular air duct 201 through the annular air balancing duct 600. Since the filter screen 211 is annular, the induced draft assembly 300 and the purge assembly 400 are first connected to the annular air balancing duct 600 and then connected to the annular air duct 201 through the four intermediate tubes 610, so that when the induced draft assembly 300 and the purge assembly 400 are working, the pressure at various locations in the annular air duct 201 is roughly equal, thereby improving the filtering effect.

[0045] Reference Figure 1As shown, it can be understood that the air induction assembly 300 includes an air induction fan 310 and an air induction valve 320. Compared with the dust collectors in the prior art, the air induction fan 310 in the embodiments of the present utility model selects a centrifugal fan with a power of 10w to 40w, which can meet the requirement of preventing powder from leaving the material passing hole 210 along with the air during material feeding, and has good energy-saving effect. The air induction fan 310 is connected to the annular air distribution pipe 600 through the air induction valve 320. When the air induction fan 310 starts, the air induction valve 320 opens; when the air induction fan 310 shuts down, the air induction valve 320 closes. Closing the air induction valve 320 can prevent the purging assembly 400 from introducing compressed air into the air induction fan 310. The centrifugal fan can be fixedly installed outside the housing 200 through a bracket.

[0046] Referring to Figure 1 As shown, it can be understood that the purging assembly 400 includes a compressor 410, a compressed air tank 420, and a purging valve 430. The compressed air tank 420 is connected to the annular air distribution pipe 600 through the purging valve 430, and the compressor 410 is connected to the compressed air tank 420 to inject compressed air into the compressed air tank 420. The air pressure in the compressed air tank 420 is 1.5MPa to 3MPa before the purging valve 430 opens. Since the purging frequency is relatively low, the compressor 410 does not need to be turned on for a long time, and only needs to inflate the compressed air tank 420 to the preset pressure before purging. The purging valve 430 selects a pneumatic butterfly valve that can be quickly opened, and the air source used by the purging valve 430 can be provided by the compressor 410. Quickly opening and closing the purging valve 430 can generate an air flow impact in the annular air duct 201 to more fully blow the powder on the filter screen 211 off. It can be foreseen that if there are other devices using compressed air on the packaging production line, the compressor 410 and the compressed air tank 420 can be shared to save costs. The air induction valve 320 and the purging valve 430 can be controlled to open and close regularly to achieve automated operation.

[0047] Referring to Figure 3 and Figure 6 As shown, it can be understood that an auxiliary funnel 700 extending downward into the funnel 100 is provided in the material passing hole 210, and the upper edge of the upper end of the auxiliary funnel 700 is connected to the upper end of the housing 200. The auxiliary funnel 700 is used to reduce the cross-sectional area of the material leaving the material passing hole 210, which is beneficial to further reducing the powder leaving the material passing hole 210. Moreover, the downwardly extending auxiliary funnel 700 can also prevent the powder from being directly sucked onto the filter screen 211 when passing through the material passing hole 210. The air flow direction is from the inside of the auxiliary funnel 700 flowing downward into the funnel 100, which is beneficial to preventing powder leakage, and then flowing upward to the filter screen 211. Since the area of the filter screen 211 is much larger than the opening at the lower end of the auxiliary funnel 700, the air gradually decelerates during the upward flow process, which is beneficial to the separation of the powder from the air under the action of gravity and reduces the powder adsorbed on the filter screen 211.

[0048] Referring to Figure 6 as shown, it can be understood that the size of the auxiliary funnel 700 is smaller than that of the funnel 100. The auxiliary funnel 700 is as small as possible under the condition of meeting the feeding requirement, so as to increase the air flow speed in the auxiliary funnel 700 when the power of the induced draft fan 310 remains unchanged. The greater the air flow speed in the auxiliary funnel 700, the less powder will escape when adding powder into the funnel 100.

[0049] Referring to Figure 4 as shown, it can be understood that an installation cylinder 800 is welded below the housing 200, and the size of the installation cylinder 800 matches that of the upper end of the funnel 100. The shape of the installation cylinder 800 is adapted to the shape of the upper end of the funnel 100 so that the installation cylinder 800 can just be embedded into the upper end of the funnel 100. To ensure the firm connection between the housing 200 and the funnel 100, bolts can be used to connect the installation cylinder 800 and the funnel 100 to enhance the connection stability.

[0050] Referring to Figure 6 as shown, it can be understood that a sealing ring is provided outside the installation cylinder 800, and the sealing ring is made of food-grade silica gel. The sealing ring is used to seal the gap between the installation cylinder 800 and the funnel 100 to prevent powder from leaking between the installation cylinder 800 and the funnel 100.

[0051] Working steps: When adding powder into the funnel 100, the induced draft fan 310 operates at the lowest power. By evenly extracting the air in the annular air duct 201 through the annular air distribution pipe 600, the air in the auxiliary funnel 700 flows downward into the funnel 100 under the push of the atmospheric pressure. The downward flowing air in the auxiliary funnel 700 can prevent powder leakage. After the air enters the funnel 100, it flows upward to the filter screen 211. Since the area of the filter screen 211 is much larger than the opening at the lower end of the auxiliary funnel 700, and the air extraction power of the induced draft fan 310 is small, the air gradually decelerates during the upward flow. Most of the powder falls to the bottom of the funnel 100 under the action of gravity, and a small part of the powder is adsorbed on the filter screen 211. When the production line stops production, at this time, the powder on the filter screen 211 accumulates to a certain thickness, the induced draft valve 320 is closed, and the purge valve 430 is opened to blow back the filter screen 211, and the powder on the filter screen 211 is blown into the funnel 100 for recovery by using compressed air. The recovered powder is sterilized and then continues to be used in production.

[0052] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the purpose of the present invention within the knowledge scope of those of ordinary skill in the art.

Claims

1. A powder automatic cleaning and recycling device for a powder food packaging production line, characterized in that: include: A funnel (100) for receiving powder; A shell (200) is installed above the funnel (100), an annular air duct (201) is arranged in the shell (200), a feeding hole (210) is provided at the center of the shell (200), the feeding hole (210) is located above the funnel (100), the powder can enter the funnel (100) through the feeding hole (210), the inner wall of the feeding hole (210) is provided with a plurality of first ventilation holes (220) connected with the annular air duct (201), and a filter screen (211) is installed inside the feeding hole (210); an air induction component (300) is connected with the annular air duct (201) to extract air in the annular air duct (201); A purge assembly (400) is connected to the annular air duct (201) to allow air to flow into the annular air duct (201).

2. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 1 is characterized in that: The shell (200) may be continuously connected to an annular baffle (500), a plurality of second ventilation holes (510) are provided on the annular baffle (500), and the annular baffle (500) cooperates with the inner wall of the feed hole (210) to clamp the filter screen (211).

3. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 2 is characterized in that: The diameter of the annular baffle (500) is not greater than the diameter of the upper end of the funnel (100).

4. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 1 is characterized in that: An annular air balancing pipe (600) is provided below the shell (200), and the annular air balancing pipe (600) is connected to the annular air duct (201) through a plurality of intermediate pipes (610), and the air induction assembly (300) and the purge assembly (400) are connected to the annular air duct (201) through the annular air balancing pipe (600).

5. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 4 is characterized in that: The induced draft component (300) comprises an induced draft fan (310) and an induced draft valve (320), and the induced draft fan (310) is connected to the annular air balancing duct (600) via the induced draft valve (320).

6. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 4 is characterized in that: The purge assembly (400) comprises a compressor (410), a compressed air tank (420) and a purge valve (430); the compressed air tank (420) is connected to the annular air balancing duct (600) via the purge valve (430); the compressor (410) is connected to the compressed air tank (420) to inject compressed air into the compressed air tank (420).

7. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 1 is characterized in that: An auxiliary funnel (700) extending downward into the funnel (100) is provided in the material passing hole (210), and an upper edge of the auxiliary funnel (700) is connected to the upper end of the shell (200).

8. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 7 is characterized in that: The size of the auxiliary funnel (700) is smaller than that of the funnel (100).

9. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 1, characterized in that: A mounting tube (800) is disposed below the housing (200), and the mounting tube (800) matches the size of the upper end of the funnel (100).

10. The automatic powder cleaning and recycling equipment for a powder food packaging production line according to claim 9, characterized in that: A sealing ring is provided on the outside of the installation tube (800), and the sealing ring is used to seal the gap between the installation tube (800) and the funnel (100).

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