A rice flour packaging filling machine and method thereof

Abstract

This invention relates to the field of filling equipment, specifically to a filling machine and method for rice noodle packaging. The machine includes a filling shell and a filling pipe disposed at the lower part of the filling shell, forming an outer shell. Inside the outer shell are a suction shell, a suction pipe, a fan, and filter cotton. The suction shell is vertically disposed inside the filling shell. The suction pipe is vertically fixed at the bottom of the suction shell and communicates with it, forming an inner shell. An annular gap for temporarily storing rice noodles exists between the inner and outer shells, and the rice noodles are discharged from the bottom of the annular gap. The fan is disposed at the upper part of the suction shell, and air in the inner shell flows upward under the action of the fan. The filter cotton is disposed at the air inlet of the fan. This invention improves filling efficiency, and the filter cotton disposed at the front end of the fan prevents rice noodles entering the suction shell from overflowing from the upper part of the suction shell.

Description

Technical Field

[0001] This invention application relates to the field of filling equipment, specifically to a filling machine and method for rice noodle packaging. Background Technology

[0002] Traditional rice noodle filling methods involve directly inserting the delivery pipe into the storage tank, which can cause the rice noodles to concentrate in the middle of the tank while the amount near the inside is relatively small. This requires manual shaking of the tank to distribute the powder evenly. This method is complicated by human-machine interaction, inconvenient to operate, consumes a lot of manpower, and has low work efficiency.

[0003] Chinese Patent Publication No. CN117799908B discloses a filling machine for corn flour packaging, comprising a conveying pipe, a drive pipe, a conveying disc, a conveying trough plate, and a filling pipe arranged vertically in sequence. Threads are provided on the outer wall of the conveying pipe and the inner wall of the drive pipe. The drive pipe is screwed onto the conveying pipe. The conveying disc is hollow and connected to the bottom of the drive pipe, with a discharge port at the bottom. The conveying trough plate has an arc-shaped cross-section and is fitted onto the outer wall of the conveying disc. The conveying trough plate is coaxial with the conveying disc and can rotate along the axis of the conveying disc. The filling pipe is installed at the bottom of the conveying trough plate, and the conveying disc is connected to the filling pipe through the discharge port. A push-pull mechanism is provided on the drive pipe to drive the conveying trough plate to swing on the conveying disc.

[0004] The above solution ensures that the corn flour poured into the storage tank remains uniform. Similarly, it can solve the problem of uneven filling of rice flour. However, due to the special nature of rice flour, it tends to rise during the filling process. Furthermore, the air in the storage tank needs to be expelled in real time during filling, and this expelled air carries the rising rice flour out through the top opening of the storage tank. To avoid this, the top opening of the storage tank needs to be sealed during filling. While this prevents the rice flour from flying out, the sealed tank allows air to escape only through the filling pipe, hindering the flow of rice flour into the storage tank. This prolongs the filling time and reduces filling efficiency. Summary of the Invention

[0005] To address the aforementioned problems, a rice noodle packaging filling machine and method are provided. The method involves installing an air extraction shell inside the filling shell, with an air extraction pipe fixedly installed at the lower part of the shell. The air extraction shell and pipe together form an inner shell, creating an annular gap between the inner and outer shells for the rice noodles to enter the storage container. A fan is installed at the upper part of the air extraction shell to extract air from inside, and a filter cotton is installed at the front end of the fan to filter the air. During filling, the fan operates synchronously, and the rice noodles are filled into the storage container through the annular gap. The fan guides the air out of the storage container through the air extraction pipe, ensuring that the descending rice noodles and the rising exhaust air do not obstruct each other during filling.

[0006] To address the problems of the prior art, this invention application provides a filling machine for rice noodle packaging, including a filling shell and a filling pipe disposed at the lower part of the filling shell, wherein the filling shell and the filling pipe together form an outer shell;

[0007] Inside the outer casing are an air extraction shell, an air extraction pipe, a fan, and filter cotton;

[0008] The evacuation shell is vertically positioned inside the filling shell;

[0009] The suction pipe is vertically fixed at the bottom of the suction shell and is connected to the suction shell. The suction pipe and the suction shell together form the inner shell. There is an annular gap between the inner shell and the outer shell for temporarily storing rice noodles. The rice noodles are discharged from the bottom of the annular gap.

[0010] The fan is located at the top of the air extraction shell, and the air in the inner shell flows from bottom to top under the action of the fan;

[0011] The filter cotton is installed at the air inlet of the fan.

[0012] Preferably, there are two fans, and a partition plate is vertically installed inside the air extraction shell. The partition plate divides the air extraction shell into two chambers, and the two fans are located in the two chambers respectively and operate alternately.

[0013] Preferably, a cleaning unit for cleaning the lower end face of the filter cotton is provided at the lower part of the filter cotton. The cleaning unit includes a hammer that is rotatably disposed below the filter cotton around the axis of the air extraction shell. The hammer swings periodically, and when it swings, the upper end of the hammer squeezes and deforms the lower end of the filter cotton.

[0014] Preferably, the cleaning unit further includes a rotating shaft, a coil spring, a swing rod, and a trigger block;

[0015] The rotating shaft is located at the lower end of the hammer along the radial direction of the vacuum shell, and the rotating shaft and the hammer rotate synchronously around the axis of the vacuum shell.

[0016] The coil spring is sleeved around the rotating shaft;

[0017] The swing arm is fixedly mounted at the end of the rotating shaft;

[0018] Multiple trigger blocks are provided, and these trigger blocks are evenly fixed on the inner wall of the air extraction shell around the axis of the air extraction shell.

[0019] Preferably, the cleaning unit further includes a first scraper and a second scraper;

[0020] Multiple first scrapers are arranged inside the air extraction shell around the axis of the air extraction shell. Each first scraper is equipped with a rotating shaft. The first scraper can rotate around the axis of the air extraction shell, and the end of the first scraper slides in cooperation with the side wall of the air extraction shell.

[0021] The second scraper is vertically fixed below the first scraper. The second scraper extends into the suction pipe and slides against the inner wall of the suction pipe. The second scraper and the first scraper rotate synchronously.

[0022] Preferably, the cleaning unit also includes a push plate and an electric push rod;

[0023] The electric actuator is vertically positioned above the filter cotton, and the output shaft of the electric actuator passes through the filter cotton and extends below the filter cotton.

[0024] The push plate is rotatably mounted at the end of the output shaft of the electric push rod. Multiple sliding grooves are evenly distributed around the axis of the push plate on its outer periphery. The sliding grooves correspond one-to-one with the second scraper and slide in fit.

[0025] Preferably, a second annular magnetic actuator, an annular frame, and an extension plate are provided below the filling tube;

[0026] The second annular magnetic actuator is fixedly installed at the lower part of the filling tube;

[0027] The ring frame is rotatably mounted on one side of the inner ring of the second annular magnetic actuator, which drives the ring frame to rotate. The ring frame is located directly below the annular gap.

[0028] Multiple extension plates are provided and are evenly distributed around the axis of the ring frame at the lower part of the ring frame.

[0029] Preferably, a rubber ring is fixedly provided at the lower part of the filling shell.

[0030] Preferably, a one-way valve is provided on the side wall of the filling shell, through which external air can flow into the filling shell.

[0031] This invention also relates to a filling method for rice noodle packaging, which uses a rice noodle packaging filling machine, and the specific steps are as follows:

[0032] S1. Move the storage container for filling rice noodles to directly below the filling shell. After aligning the filling tube with the opening of the storage container, lower the filling tube and insert it into the storage container.

[0033] S2. Add rice noodles into the annular gap, and at the same time start the fan. A measured amount of rice noodles is discharged into the storage tank through the bottom of the annular gap. The air in the storage tank enters the air extraction shell through the air extraction pipe and is discharged by the fan.

[0034] S3. After filling is complete, stop the blower and remove the filling tube from the storage tank.

[0035] The advantages of this invention application compared to the prior art are:

[0036] 1. This invention relates to a method of constructing an air extraction shell inside the filling container, with an air extraction pipe fixedly installed at the lower part of the shell. The air extraction shell and pipe together form an inner shell, creating an annular gap between the inner and outer shells for the rice noodles to enter the storage container. A fan is installed at the upper part of the air extraction shell to extract air from its interior, and a filter cotton is installed at the front end of the fan to filter the air. During filling, the fan operates synchronously, and the rice noodles are filled into the storage container through the annular gap. The fan guides the air out of the storage container through the air extraction pipe, ensuring that the descending rice noodles and the rising air do not obstruct each other during filling, thus improving filling efficiency. Simultaneously, the filter cotton at the front end of the fan prevents the rice noodles entering the air extraction shell from overflowing from the top of the shell.

[0037] 2. A cleaning unit is installed at the bottom of the filter cotton. Before striking the filter cotton, the hammer is in a vertical position, with its upper part penetrating the bottom of the filter cotton. This vertical hammer creates a pressing indentation at the bottom of the filter cotton. Therefore, when the swing rod passes the trigger block, the hammer tilts first under the drive of the rotating shaft. After the swing rod has completely passed the trigger block, the coil spring drives the rotating shaft to quickly return to its original position. The rotating shaft causes the hammer to strike the lower surface of the filter cotton upon returning to its original position. This striking of the lower part of the filter cotton causes it to vibrate, dislodging the rice powder adhering to the bottom of the filter cotton, thus completing the cleaning process. Furthermore, compared to filtering with a filter screen, using filter cotton to filter rice powder provides better resistance to hammer impacts and results in a longer service life. Attached Figure Description

[0038] Figure 1 This is a three-dimensional schematic diagram of a rice noodle packaging filling machine according to the present invention.

[0039] Figure 2 This is a side view of a rice noodle packaging filling machine inserted into a storage container, as described in this invention application.

[0040] Figure 3 This invention application relates to a filling machine for rice noodle packaging. Figure 2 Schematic diagram of cross-section at point AA.

[0041] Figure 4 This is a cross-sectional perspective view of a rice noodle packaging filling machine inserted into a storage container, as described in this invention application. Figure 1 .

[0042] Figure 5 This invention application relates to a filling machine for rice noodle packaging. Figure 4 A magnified view of a portion of point B in the middle.

[0043] Figure 6 This invention application relates to a filling machine for rice noodle packaging. Figure 4 A magnified view of a portion of point C.

[0044] Figure 7 This is a cross-sectional perspective view of a rice noodle packaging filling machine inserted into a storage container, as described in this invention application. Figure 2 .

[0045] Figure 8 This is a three-dimensional schematic diagram of a rice noodle packaging filling machine after the filling shell has been removed, according to the present invention application.

[0046] Figure 9 This invention application relates to a filling machine for rice noodle packaging. Figure 8 A magnified view of a portion of point D.

[0047] Figure 10 This is a three-dimensional schematic diagram of a rice noodle packaging filling machine after the filling shell and the air extraction shell have been removed, according to the present invention application.

[0048] The numbers on the map are:

[0049] 1. Filling shell; 11. Filling tube; 12. Rubber ring; 13. Second annular magnetic actuator; 14. Annular frame; 15. Extension plate; 16. One-way valve; 2. Evacuation shell; 21. Evacuation pipe; 22. Fan; 23. Filter cotton; 24. Isolation plate; 25. Cleaning unit; 251. Hammer; 252. Rotating shaft; 253. Coil spring; 254. Swing rod; 255. Trigger block; 256. First scraper; 2561. First annular magnetic actuator; 257. Second scraper; 258. Push plate; 2581. Slide groove; 259. Electric push rod; 3. Storage tank; 4. Annular gap. Detailed Implementation

[0050] To further understand the features, technical means, and specific objectives and functions achieved by this invention application, the invention application will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0051] Reference Figures 1-8 A rice noodle packaging filling machine includes a filling shell 1 and a filling tube 11 disposed at the lower part of the filling shell 1, wherein the filling shell 1 and the filling tube 11 together form an outer shell;

[0052] Inside the outer casing are an air extraction shell 2, an air extraction pipe 21, a fan 22, and a filter cotton 23;

[0053] The vacuum shell 2 is vertically installed inside the filling shell 1;

[0054] The suction pipe 21 is vertically fixed at the bottom of the suction shell 2 and communicates with the suction shell 2. The suction pipe 21 and the suction shell 2 together form an inner shell. There is an annular gap 4 between the inner shell and the outer shell for temporarily storing rice noodles. The rice noodles are discharged from the bottom of the annular gap 4.

[0055] The fan 22 is located at the top of the air extraction shell 2, and the air in the inner shell flows from bottom to top under the action of the fan 22;

[0056] The filter cotton 23 is installed at the air inlet of the fan 22.

[0057] In the process of filling rice noodles, the main step is to fill the rice noodles into the storage tank 3. In the traditional filling method, the filling tube 11 is usually inserted directly into the storage tank 3 and then the filling work begins. Since there is a gap between the filling tube 11 and the storage tank 3, the rice noodles falling into the storage tank 3 are prone to being lifted up during the filling process. The lifted rice noodles are easy to overflow through the gap, causing the rice noodles to scatter everywhere. Therefore, in order to avoid the rice noodles scattering everywhere during the filling process, a transparent plastic film is usually placed around the filling tube 11. After the filling tube 11 is inserted into the storage tank 3, the transparent plastic film is placed over the opening at the top of the storage tank 3. During the filling process, the rice noodles that overflow through the gap are all blocked by the transparent plastic film, thereby preventing the rice noodles from overflowing. It is worth noting that when rice noodles are filled into storage tank 3, as rice noodles continuously enter storage tank 3, the air inside storage tank 3 needs to be discharged through the opening of storage tank 3. However, since the outside of the filling tube 11 is covered with a transparent plastic film, the transparent plastic film will hinder the normal discharge of air, causing the air in storage tank 3 to flow backward through the filling tube 11. The upward air flows in the opposite direction to the downward rice noodles, which hinders the filling speed of rice noodles and results in low filling efficiency.

[0058] To avoid the aforementioned situation, the structure of the existing filling machine was redesigned so that, during the rice noodle filling process, the air discharged from the storage tank 3 would not obstruct the rice noodles being filled, thus improving the filling efficiency. The specific structure and working process of this invention are as follows:

[0059] During filling, the storage tank 3 is first positioned directly below the filling shell 1, aligning the filling tube 11 with the opening of the storage tank 3. The filling tube 11 is then inserted into the storage tank 3. A rubber ring 12 is fixedly installed at the lower part of the filling shell 1. The filling shell 1 contacts the opening at the top of the storage tank 3 through the rubber ring 12, sealing the storage tank 3 and preventing rice noodles from overflowing from the opening during subsequent filling. After the storage tank 3 is sealed by the rubber ring 12, the rice noodles enter the annular gap 4 through the upper part of the filling shell 1. Guided by the annular gap 4, the rice noodles enter the storage tank 3 from the bottom of the annular gap 4. Simultaneously with the rice noodles being added to the storage tank 3, the blower 22 starts. The blower 22 extracts air from the storage tank 3 through the air extraction shell 2 and the air extraction pipe 21. Guided by the fan 22, air in the storage tank 3 flows upward through the exhaust pipe 21 into the exhaust shell 2, and is discharged after being filtered by the filter cotton 23. Although some flying rice noodles may enter the exhaust shell 2 with the flowing air during the operation of the fan 22, resulting in rice noodles adhering to the lower end of the filter cotton 23, the filling time of the storage tank 3 is short, and the filter cotton 23 will not be completely blocked by flying rice noodles during the filling period. At the same time, a cleaning unit 25 is also provided below the filter cotton 23. The cleaning unit 25 cleans the lower surface of the filter cotton 23 during the filling process, avoiding excessive rice noodles adhering to the lower part of the filter cotton 23 and ensuring the airflow of the filter cotton 23. The details of the cleaning unit 25 will be described below. Guided by the fan 22, all air from the storage tank 3 is discharged into the exhaust shell 2 through the exhaust pipe 21, avoiding the obstruction between the rising airflow and the falling rice noodles during the filling of the storage tank 3.

[0060] By setting an extraction shell 2 inside the filling shell 1, and fixing an extraction pipe 21 at the lower part of the extraction shell 2, the extraction shell 2 and the extraction pipe 21 together form an inner shell. An annular gap 4 is formed between the inner shell and the outer shell to allow rice noodles to enter the storage tank 3. A fan 22 is set at the upper part of the extraction shell 2 to extract the air inside the extraction shell 2, and a filter cotton 23 is set at the front end of the fan 22 to filter the air. During filling, the fan 22 runs synchronously, and the rice noodles are filled into the storage tank 3 through the annular gap 4. The fan 22 guides the air in the storage tank 3 to be discharged through the extraction pipe 21, so that the descending rice noodles and the rising air will not obstruct each other when the storage tank 3 is being filled, thus improving the filling efficiency. At the same time, the filter cotton 23 set at the front end of the fan 22 can prevent the rice noodles entering the extraction shell 2 from overflowing from the upper part of the extraction shell 2.

[0061] Reference Figure 3 There are two fans 22. A partition plate 24 is vertically installed inside the air extraction shell 2. The partition plate 24 divides the air extraction shell 2 into two chambers. The two fans 22 are located in the two chambers respectively and operate alternately.

[0062] During the filling process, one of the two blowers 22 is always running. Under the action of the blower 22, the air in the extraction shell 2 passes through the filter cotton 23 and enters the chamber corresponding to the blower 22. The air in the chamber is discharged by the blower 22. After the blower 22 has been running for a period of time, it stops running and the other blower 22 starts synchronously. This avoids the problem of too much rice flour adhering to the filter cotton 23 directly below the blower 22 when the same blower 22 is running, which would greatly reduce the airflow of the filter cotton 23. After the blower 22 stops running, some of the rice flour that has adhered to the filter cotton 23 due to the airflow can fall off by itself and be discharged back into the storage tank 3 through the extraction pipe 21.

[0063] Reference Figure 8 and Figure 9 A cleaning unit 25 is provided at the lower part of the filter cotton 23 to clean the lower end surface of the filter cotton 23. The cleaning unit 25 includes a hammer 251 that is rotatably disposed below the filter cotton 23 around the axis of the air extraction shell 2. The hammer 251 swings periodically, and when it swings, the upper end of the hammer 251 squeezes and deforms the lower end of the filter cotton 23.

[0064] By striking the bottom of the filter cotton 23 with the hammer 251, the rice powder attached to the bottom of the filter cotton 23 is dislodged by the vibration generated when the hammer 251 strikes, thereby improving the cleaning effect of the filter cotton 23.

[0065] Reference Figure 9 and Figure 10 The cleaning unit 25 also includes a rotating shaft 252, a coil spring 253, a swing rod 254, and a trigger block 255;

[0066] The rotating shaft 252 is arranged at the lower end of the hammer 251 along the radial direction of the vacuum shell 2, and the rotating shaft 252 and the hammer 251 rotate synchronously around the axis of the vacuum shell 2.

[0067] The coil spring 253 is sleeved around the rotating shaft 252;

[0068] The swing arm 254 is fixedly mounted at the end of the rotating shaft 252;

[0069] Multiple trigger blocks 255 are provided, and the multiple trigger blocks 255 are evenly fixed on the inner wall of the air extraction shell 2 around the axis of the air extraction shell 2.

[0070] During the filling process, the rotating shaft 252 and the striking hammer 251 rotate synchronously around the axis of the vacuum shell 2. The swing rod 254 at the end of the rotating shaft 252 rotates synchronously around the axis of the vacuum shell 2 with the rotating shaft 252. When the swing rod 254 passes the trigger block 255 set on the inner wall of the vacuum shell 2, the swing rod 254 is pushed and tilted by the trigger block 255. As the rotating shaft 252 continues to rotate around the axis of the vacuum shell 2, the swing rod 254 drives the rotating shaft 252 to rotate around the axis of the rotating shaft 252. Since the striking hammer 251 is fixedly set on the rotating shaft 252, the striking hammer 251 set on the rotating shaft 252 tilts synchronously with the rotating shaft 252. At this time, the coil spring 253 is in a continuously tightened state. When the swing rod 254 completely passes the trigger block 255, the rotating shaft 252 rotates to reset under the action of the reset elastic force of the coil spring 253. The rotating shaft 252 drives the tilted striking hammer 251 to reset. It is worth noting that after the hammer 251 completes its reset, it is in a vertical position, and the upper part of the hammer 251 penetrates the bottom of the filter cotton 23. This means that the vertical hammer 251 creates a pressing indentation on the lower part of the filter cotton 23. Therefore, when the swing rod 254 passes the trigger block 255, the hammer 251 tilts first under the drive of the rotating shaft 252. After the swing rod 254 has completely passed the trigger block 255, the coil spring 253 drives the rotating shaft 252 to quickly reset and rotate. The rotating shaft 252 causes the hammer 251 to strike the lower end face of the filter cotton 23 during reset. This striking of the lower part of the filter cotton 23 causes it to vibrate, thus shaking off the rice noodles adhering to the bottom of the filter cotton 23, thereby completing the cleaning of the filter cotton 23. Furthermore, compared to filtering with a filter screen, using the filter cotton 23 to filter rice noodles provides better resistance to the impact of the hammer 251 and results in a longer service life.

[0071] Reference Figure 5 and Figure 8 The cleaning unit 25 also includes a first scraper 256 and a second scraper 257;

[0072] Multiple first scrapers 256 are arranged inside the suction shell 2 around the axis of the suction shell 2. Each first scraper 256 is provided with a rotating shaft 252. The first scraper 256 can rotate around the axis of the suction shell 2, and the end of the first scraper 256 slides in cooperation with the side wall of the suction shell 2.

[0073] The second scraper 257 is vertically fixed at the lower part of the first scraper 256. The second scraper 257 extends into the suction pipe 21 and slides in cooperation with the inner wall of the suction pipe 21. The second scraper 257 and the first scraper 256 rotate synchronously.

[0074] A first annular magnetic actuator 2561 is provided around the first scraper 256. The first annular magnetic actuator 2561 is located in the vacuum shell 2. The first annular magnetic actuator 2561 is used to drive the first scraper 256 to rotate. When the blower 22 draws air from the storage tank 3 into the vacuum shell 2, rice flour will adhere to the inner wall of the vacuum shell 2 and the inner wall of the vacuum pipe 21. During the filling process, the first scraper 256 and the second scraper 257 always rotate around the axis of the vacuum shell 2. The first scraper 256 and the second scraper 257 scrape the rice flour on the inner wall of the vacuum shell 2 and the inner wall of the vacuum pipe 21 in real time, respectively, to avoid rice flour residue in the vacuum shell 2 and the vacuum pipe 21, and to ensure the unobstructed flow of the vacuum pipe 21.

[0075] Reference Figure 5 and Figure 10 The cleaning unit 25 also includes a push plate 258 and an electric push rod 259;

[0076] The electric actuator 259 is vertically positioned above the filter cotton 23, and the output shaft of the electric actuator 259 passes through the filter cotton 23 and extends to the bottom of the filter cotton 23.

[0077] The push disk 258 is rotatably mounted at the end of the output shaft of the electric push rod 259. Multiple sliding grooves 2581 are evenly provided around the axis of the push disk 258 on the outer periphery of the push disk 258. The sliding grooves 2581 correspond one-to-one with the second scraper 257 and slide together.

[0078] After filling is completed, the filling tube 11 rises, separating the filling shell 1 from the upper part of the storage tank 3. During the rising process of the filling tube 11, the electric push rod 259 is activated, driving the push plate 258 vertically, causing the push plate 258 to move from top to bottom. Since the sliding groove 2581 on the push plate is in sliding engagement with the second scraper 257, the gradually descending push plate scrapes off the rice noodles attached to the second scraper 257. It is worth noting that when the filling tube 11 rises, the blower 22 stops operating, which helps the rice noodles remaining in the suction shell 2 and suction pipe 21 to be smoothly discharged into the storage tank 3.

[0079] Reference Figure 6 and Figure 8 Below the filling tube 11, there is a second annular magnetic actuator 13, an annular frame 14 and an extension plate 15.

[0080] The second annular magnetic actuator 13 is fixedly installed at the lower part of the filling tube 11;

[0081] The ring frame 14 is rotatably mounted on one side of the inner ring of the second ring magnetic actuator 13. The second ring magnetic actuator 13 is used to drive the ring frame 14 to rotate. The ring frame 14 is located directly below the annular gap 4.

[0082] Multiple extension plates 15 are provided and are evenly arranged around the axis of the ring frame 14 at the lower part of the ring frame 14.

[0083] During the filling process, the second annular magnetic actuator 13 drives the annular frame 14 to rotate, and the annular frame 14 drives the extension plate 15 to rotate. The rice noodles discharged from the bottom of the annular gap 4 will pass through the rotating extension plate 15, and the rotating extension plate 15 can evenly spread the rice noodles to avoid accumulation in the container.

[0084] Reference Figures 5-7 A rubber ring 12 is fixedly installed at the lower part of the filling shell 1.

[0085] When the filling shell 1 and the filling tube 11 descend synchronously, the filling shell 1 contacts the upper part of the storage tank 3 through the rubber ring 12, thereby achieving a sealing effect on the storage tank 3.

[0086] Reference Figure 1 A one-way valve 16 is provided on the side wall of the filling shell 1, through which external air can flow into the filling shell 1.

[0087] The external air is filtered, ensuring that the rice noodles are not contaminated by external dust during the filling process. When the blower 22 is started, it generates a certain suction force on the storage tank 3, which in turn generates the same suction force in the annular gap 4. The one-way valve 16 introduces external air into the annular gap 4, so that the air entering the annular gap 4 pushes the rice noodles in the annular gap 4, improving the filling efficiency of the rice noodles.

[0088] Reference Figures 1-10 This invention also relates to a filling method for rice noodle packaging, using a rice noodle packaging filling machine, the specific steps of which are as follows:

[0089] S1. Move the storage container 3 for filling rice noodles to directly below the filling shell 1. After the filling tube 11 is aligned with the opening of the storage container 3, the filling tube 11 is lowered and inserted into the storage container 3.

[0090] S2. Rice noodles are put into the annular gap 4. At the same time, the fan 22 is started. A certain amount of rice noodles are discharged into the storage tank 3 through the bottom of the annular gap 4. The air in the storage tank 3 enters the air extraction shell 2 through the air extraction pipe 21 and is discharged by the fan 22.

[0091] S3. After filling is completed, the blower 22 stops running and the filling tube 11 is removed from the storage tank 3.

[0092] Working principle: During filling, the storage tank 3 is first positioned directly below the filling shell 1, aligning the filling tube 11 with the opening of the storage tank 3. The filling tube 11 is then inserted into the storage tank 3. A rubber ring 12 is fixedly installed at the lower part of the filling shell 1. The filling shell 1 contacts the opening at the top of the storage tank 3 through the rubber ring 12, sealing the storage tank 3 and preventing rice noodles from overflowing from the opening during subsequent filling. After the storage tank 3 is sealed by the rubber ring 12, the rice noodles enter the annular gap 4 through the upper part of the filling shell 1. Guided by the annular gap 4, the rice noodles enter the storage tank 3 from the bottom of the annular gap 4. Simultaneously with the rice noodles being added to the storage tank 3, the blower 22 starts. The blower 22, through the suction shell 2 and suction pipe 21, circulates air from the storage tank 3... Air is extracted from the storage tank 3. Guided by the fan 22, the air rises from the bottom and enters the extraction shell 2 through the extraction pipe 21. After being filtered by the filter cotton 23, it is discharged. Although some flying rice noodles may enter the extraction shell 2 with the airflow during the operation of the fan 22, resulting in rice noodles adhering to the lower end of the filter cotton 23, the filling time of the storage tank 3 is short, and the filter cotton 23 will not be completely blocked by flying rice noodles during the filling process. At the same time, a cleaning unit 25 is set below the filter cotton 23. The cleaning unit 25 cleans the lower surface of the filter cotton 23 during the filling process, avoiding excessive rice noodles adhering to the lower part of the filter cotton 23 and ensuring airflow through the filter cotton 23. Guided by the fan 22, all air from the storage tank 3 is discharged into the extraction shell 2 through the extraction pipe 21, avoiding the obstruction between the rising airflow and the falling rice noodles during the filling process of the storage tank 3.

[0093] The above embodiments only illustrate one or more implementation methods of this invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these all fall within the scope of protection of this invention. Therefore, the scope of protection of this invention should be determined by the appended claims.

Claims

1. A rice noodle packaging filling machine, comprising a filling shell (1) and a filling tube (11) disposed at the lower part of the filling shell (1), wherein the filling shell (1) and the filling tube (11) together form an outer shell; characterized in that Inside the outer casing are an air extraction shell (2), an air extraction pipe (21), a fan (22) and a filter cotton (23). The vacuum shell (2) is vertically installed inside the filling shell (1); The suction pipe (21) is vertically fixed at the bottom of the suction shell (2) and communicates with the suction shell (2). The suction pipe (21) and the suction shell (2) together form an inner shell. There is an annular gap (4) between the inner shell and the outer shell for temporarily storing rice noodles. The rice noodles are discharged from the bottom of the annular gap (4). The fan (22) is located at the top of the air extraction shell (2), and the air in the inner shell flows from bottom to top under the action of the fan (22); The filter cotton (23) is placed at the air inlet of the fan (22).

2. The rice noodle packaging filling machine according to claim 1, characterized in that, There are two fans (22). A partition plate (24) is vertically installed inside the air extraction shell (2). The partition plate (24) divides the air extraction shell (2) into two chambers. The two fans (22) are located in the two chambers respectively and operate alternately.

3. The rice noodle packaging filling machine according to claim 1, characterized in that, A cleaning unit (25) for cleaning the lower end face of the filter cotton (23) is provided at the lower part of the filter cotton (23). The cleaning unit (25) includes a hammer (251) that is rotatably disposed below the filter cotton (23) around the axis of the air extraction shell (2). The hammer (251) swings periodically, and when it swings, the upper end of the hammer (251) squeezes and deforms the lower end of the filter cotton (23).

4. A rice noodle packaging filling machine according to claim 3, characterized in that, The cleaning unit (25) also includes a rotating shaft (252), a coil spring (253), a swing rod (254), and a trigger block (255); The rotating shaft (252) is arranged at the lower end of the hammer (251) along the radial direction of the vacuum shell (2), and the rotating shaft (252) and the hammer (251) rotate synchronously around the axis of the vacuum shell (2); A coil spring (253) is sleeved around the rotating shaft (252); The swing arm (254) is fixedly mounted at the end of the rotating shaft (252); Multiple trigger blocks (255) are provided, and multiple trigger blocks (255) are evenly fixed on the inner wall of the air extraction shell (2) around the axis of the air extraction shell (2).

5. A rice noodle packaging filling machine according to claim 4, characterized in that, The cleaning unit (25) also includes a first scraper (256) and a second scraper (257); Multiple first scrapers (256) are provided inside the suction shell (2) around the axis of the suction shell (2). Each first scraper (256) is provided with a rotating shaft (252). The first scraper (256) can rotate around the axis of the suction shell (2), and the end of the first scraper (256) slides with the side wall of the suction shell (2). The second scraper (257) is vertically fixed at the lower part of the first scraper (256). The second scraper (257) extends into the suction pipe (21) and slides in cooperation with the inner wall of the suction pipe (21). The second scraper (257) and the first scraper (256) rotate synchronously.

6. A rice noodle packaging filling machine according to claim 5, characterized in that, The cleaning unit (25) also includes a push plate (258) and an electric push rod (259); The electric actuator (259) is vertically positioned above the filter cotton (23), and the output shaft of the electric actuator (259) passes through the filter cotton (23) and extends to the bottom of the filter cotton (23); The push disk (258) is rotatably mounted at the end of the output shaft of the electric push rod (259). Multiple sliding grooves (2581) are evenly provided around the axis of the push disk (258) on the outer periphery of the push disk (258). The sliding grooves (2581) correspond one-to-one with the second scraper (257) and slide together.

7. A rice noodle packaging filling machine according to claim 1, characterized in that, A second annular magnetic actuator (13), an annular frame (14) and an extension plate (15) are provided below the filling tube (11). The second annular magnetic actuator (13) is fixedly installed at the lower part of the filling tube (11); The ring frame (14) is rotatably mounted on one side of the inner ring of the second ring magnetic actuator (13). The second ring magnetic actuator (13) is used to drive the ring frame (14) to rotate. The ring frame (14) is located directly below the annular gap (4). Multiple extension plates (15) are provided and are evenly arranged around the axis of the ring frame (14) at the lower part of the ring frame (14).

8. A rice noodle packaging filling machine according to claim 1, characterized in that, A rubber ring (12) is fixedly installed at the lower part of the filling shell (1).

9. A rice noodle packaging filling machine according to claim 1, characterized in that, A one-way valve (16) is provided on the side wall of the filling shell (1), and external air can flow into the filling shell (1) through the one-way valve (16).

10. A filling method for rice noodle packaging, employing a filling machine for rice noodle packaging as described in any one of claims 1-9, characterized in that, The specific steps are as follows: S1. Move the storage container (3) for filling rice noodles directly below the filling shell (1). After the filling tube (11) is aligned with the opening of the storage container (3), the filling tube (11) is lowered and inserted into the storage container (3). S2. Rice noodles are put into the annular gap (4), and the fan (22) is started at the same time. A certain amount of rice noodles are discharged into the storage tank (3) through the bottom of the annular gap (4). The air in the storage tank (3) enters the air extraction shell (2) through the air extraction pipe (21) and is discharged by the fan (22). S3. After filling is completed, the blower (22) stops running and the filling tube (11) is removed from the storage tank (3).

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