Vacuum feeding machine

Abstract

The utility model relates to the technical field of powder conveying mechanical equipment, in particular to a vacuum feeding machine which comprises a vacuum hopper, a vacuum pump, a storage bin, a suction pipe, a discharging pipe and a scraping assembly. The top end of the side wall of the vacuum hopper communicates with a vacuum pipeline, the vacuum pump is connected to the end, away from the vacuum hopper, of the vacuum pipeline, the storage bin is used for storing particle and powder materials needing to be conveyed, one end of the suction pipe communicates with the side wall of the vacuum hopper, and the end, away from the vacuum hopper, of the suction pipe is arranged in the storage bin. The discharging pipe is arranged at the bottom of the vacuum hopper in a communicating mode, an electromagnetic valve is arranged on the discharging pipe, and the scraping assembly is installed in the vacuum hopper and used for scraping residual materials in the vacuum hopper. The device has the effects that caked wall-adhering materials in the device are scraped, and therefore the quality and safety of conveyed materials are improved.

Description

Technical Field

[0001] The present application relates to the technical field of powder conveying mechanical equipment, and in particular to a vacuum loader. Background Art

[0002] Vacuum loader, also known as vacuum conveyor, is a pipeline conveying equipment that uses the air pressure difference between vacuum and ambient space to transport granular and powdered materials. It is widely used in production workshops in the food and pharmaceutical industries to transport powdered materials.

[0003] During operation, the existing vacuum loader creates a negative pressure environment inside the equipment through a vacuum pump, so that the material is sucked into the conveying pipe from the suction port, then enters the interior of the equipment, and finally discharged to the next production link.

[0004] However, in actual use, some raw materials in production and transportation have high viscosity and humidity, which causes the materials to clump and stick to the walls of the equipment during transportation through the vacuum feeder. This causes the agglomerated materials to remain in the transport container for a long time. The materials that remain in the equipment for a long time are prone to moisture and mold inside the equipment, thereby causing cross-contamination with the materials transported later. Utility Model Content

[0005] In order to scrape off the materials that are agglomerated and stuck to the walls of the equipment, thereby improving the quality and safety of transported materials, the present application provides a vacuum loader.

[0006] The present application provides a vacuum loader, which adopts the following technical solution:

[0007] A vacuum loader, comprising:

[0008] A vacuum hopper, wherein the top end of the side wall of the vacuum hopper is connected to a vacuum pipe;

[0009] a vacuum pump connected to an end of the vacuum pipe away from the vacuum hopper;

[0010] A storage silo, which is used to store granular and powdered materials that need to be transported;

[0011] A suction pipe, one end of which is connected to the side wall of the vacuum hopper and one end of which is away from the vacuum hopper and is arranged in the storage bin;

[0012] A discharge pipe, the discharge pipe is connected to and arranged at the bottom of the vacuum hopper, and an electromagnetic valve is provided on the discharge pipe;

[0013] A scraping assembly is installed in the vacuum hopper and is used to scrape residual materials in the vacuum hopper.

[0014] By adopting the above technical solution, the vacuum pump sucks out air through the vacuum pipeline, creating a negative pressure environment in the vacuum hopper. The granular and powdery materials in the storage bin are sucked into the vacuum hopper through the suction pipe. Then, the vacuum pump is turned off and the electromagnetic valve is opened, and the materials are discharged through the feeding pipe at the next station, thus realizing material transportation. The electromagnetic valve has good sealing performance. During vacuum feeding, the electromagnetic valve needs to be closed to maintain the sealing of the vacuum funnel and improve the vacuum degree, thereby enhancing the feeding efficiency. The scraping assembly is installed in the vacuum hopper and can timely scrape the materials attached to the inner wall of the vacuum hopper, effectively preventing the materials from remaining in the vacuum hopper and improving the quality and safety of the transported materials.

[0015] Optionally, a clamping groove is formed on the inner wall of the vacuum hopper, and the scraping assembly includes:

[0016] A motor, the fixed end of which is fixedly installed on the vacuum hopper;

[0017] A lead screw, which is fixedly installed at the output end of the motor and is arranged inside the vacuum hopper;

[0018] A scraper, which is threadedly connected to the lead screw and abuts against the vacuum hopper;

[0019] A clamping block, which is fixedly installed on the scraper and is slidably arranged in the clamping groove.

[0020] By adopting the above technical solution, during or after the material feeding process, the motor is started. The motor drives the lead screw to rotate, thereby driving the scraper to move up and down, so as to scrape the residual materials on the inner wall of the vacuum hopper. The cooperation between the clamping block and the clamping groove enables the scraper to move up and down linearly under the drive of the motor and the lead screw, improving the quality of the transported products and reducing the quality problems caused by the residual materials.

[0021] Optionally, a filter screen is fixedly installed at one end of the vacuum pipeline close to the vacuum hopper.

[0022] By adopting the above technical solution, the filter screen can effectively block the granular and powdery materials from entering the vacuum pipeline and the vacuum pump, thereby avoiding the wear, blockage or damage of the internal parts of the vacuum pump and prolonging the service life of the vacuum pump.

[0023] Optionally, an anti-blowing assembly is installed on the vacuum pipeline, and the anti-blowing assembly includes:

[0024] An anti-blowing air bag, which is communicated with the vacuum pipeline;

[0025] A quick exhaust valve, which is arranged on the anti-blowing air bag;

[0026] An inflation valve, and the inflation valve is arranged on the back-blowing air bag.

[0027] By adopting the above technical solution, after the vacuum feeding machine operates for a period of time, powder materials will accumulate on the filter screen, and there will also be some tiny powders entering and adhering to the pipeline wall. The quick exhaust valve can be quickly opened within a short time, and the high-pressure gas in the back-blowing air bag is quickly released into the vacuum pipeline, blowing these accumulated materials back into the vacuum hopper, preventing pipeline blockage, ensuring that the vacuum pipeline always remains unobstructed, and improving the reliability and stability of the equipment.

[0028] Optionally, a controller is fixedly installed on the outer wall of the vacuum hopper, a level monitor is fixedly installed at the top of the inner wall of the vacuum hopper, the level monitor is electrically connected to the controller, and the electromagnetic valve is electrically connected to the controller.

[0029] By adopting the above technical solution, the level monitor can accurately monitor the material height in the vacuum hopper in real time. By being electrically connected to the controller, the level information is transmitted to the controller in a timely manner, enabling the controller to precisely control the operation of the feeding machine according to the level situation. When the level is too high, the controller controls it to stop feeding and controls the electromagnetic valve to open for discharging, avoiding overfilling of the vacuum hopper and causing material overflow or equipment damage, and ensuring the safe and stable progress of the feeding process.

[0030] Optionally, the vacuum pump, the motor, and the quick exhaust valve are all electrically connected to the controller.

[0031] By adopting the above technical solution, when starting the feeding process, the controller first starts the motor to drive the scraping component for pre-cleaning. After the scraper resets, the vacuum pump is started to generate negative pressure for sucking materials. At the same time, the quick exhaust valve is controlled appropriately according to needs for back-blowing operations. Through precise control and coordination, the rotation speed of the motor and the opening and closing timing of the quick exhaust valve are reasonably controlled to improve the efficiency of vacuum feeding.

[0032] Optionally, the bottom of the vacuum hopper is in a necked shape along the vertically downward direction.

[0033] By adopting the above technical solution, the necked shape design makes the cross-sectional area at the bottom of the vacuum hopper gradually decrease. Under the action of gravity, the materials are more likely to converge towards the center, which helps the materials to form a stable flow at the discharge port, reduce the residue of materials at the bottom of the hopper, and improve the smoothness and efficiency of discharging.

[0034] Optionally, the suction pipe is a pressure-resistant flexible pipe.

[0035] By adopting the above technical solution, during the vacuum feeding process, the suction tube can maintain structural stability in the face of the negative pressure generated in the vacuum hopper and the pressure changes caused by the material flow, and will not be deformed or broken due to pressure, so that the suction process can be carried out continuously and stably without being affected by pressure fluctuations, thereby improving the reliability of feeding.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] 1. By setting up a vacuum pump, a negative pressure environment is created in the vacuum hopper. The granular and powdered materials in the storage bin are sucked into the vacuum hopper through the suction pipe to realize material transportation;

[0038] 2. By setting up a scraping component, the material attached to the inner wall of the vacuum hopper can be scraped off in time, effectively preventing the material from remaining in the vacuum hopper and improving the quality and safety of the transported products;

[0039] 3. By setting up the filter and backflush assembly, it can effectively prevent particles and powdery materials from entering the vacuum pipe and vacuum pump, thereby avoiding wear, blockage or damage to the internal parts of the vacuum pump and extending the service life of the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural diagram of an embodiment of the present application;

[0041] Figure 2 It is a cross-sectional view of an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 1. Vacuum hopper; 2. Vacuum pipe; 3. Vacuum pump; 4. Storage bin; 5. Suction pipe; 6. Scraping assembly; 61. Motor; 62. Screw; 63. Scraper; 64. Block; 65. Slot; 7. Feeding pipe; 71. Solenoid valve; 8. Filter; 9. Backflush assembly; 91. Backflush air bag; 92. Quick exhaust valve; 93. Inflation valve; 10. Material level monitor; 11. Controller. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the 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 therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0046] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0047] The following will further elaborate on this application Figure 1-2 in conjunction with the attached drawings.

[0048] The embodiment of this application discloses a vacuum feeding machine.

[0049] Referring to Figure 1 , the vacuum feeding machine includes a vacuum hopper 1, a vacuum pump 3, a storage bin 4, a suction pipe 5, a discharge pipe 7, and a scraping assembly 6. The top end of the side wall of the vacuum hopper 1 is communicatively connected with a vacuum pipeline 2. The vacuum pump 3 is connected to one end of the vacuum pipeline 2 away from the vacuum hopper 1. The storage bin 4 is used to store particulate and powdered materials to be transported. One end of the suction pipe 5 is communicatively connected to the side wall of the vacuum hopper 1, and the end of the suction pipe 5 away from the vacuum hopper 1 is arranged inside the storage bin 4. The discharge pipe 7 is communicatively connected to the bottom of the vacuum hopper 1, and an electromagnetic valve 71 is arranged on the discharge pipe 7. The scraping assembly 6 is mounted inside the vacuum hopper 1, and the scraping assembly 6 is used to scrape the residual materials inside the vacuum hopper 1.

[0050] During use, the vacuum pump 3 is started, and the vacuum pump 3 begins to work. The vacuum pump 3 sucks out air through the vacuum pipeline 2, creating a negative pressure environment in the vacuum hopper 1. The granular and powdered materials in the storage bin 4 are sucked into the vacuum hopper 1 through the suction pipe 5 under the action of the pressure difference. After the feeding is completed, the vacuum pump 3 is turned off, and the solenoid valve 71 is opened. The materials are discharged through the discharge pipe 7 at the next station. At the same time, the scraping assembly 6 is started to scrape the residual materials attached to the inner wall of the vacuum hopper 1, reducing the risk of cross-contamination and improving the quality and safety of the transported materials.

[0051] Referring to Figure 1 and Figure 2 , the vacuum hopper 1 is in the shape of a circular barrel. Vertical clamping grooves 65 are provided on the inner wall of the vacuum hopper 1, and the bottom of the vacuum hopper 1 is constricted in the vertical downward direction.

[0052] Referring to Figure 1 and Figure 2 , the scraping assembly 6 includes a motor 61, a lead screw 62, a scraper 63, and a clamping block 64. The fixed end of the motor 61 is fixedly installed on the vacuum hopper 1. The lead screw 62 is arranged vertically and is fixedly installed at the output end of the motor 61. The lead screw 62 is arranged inside the vacuum hopper 1. The scraper 63 is arranged horizontally and is threadedly connected to the lead screw 62. The circumferential side of the scraper 63 abuts against the side wall of the vacuum hopper 1. The clamping block 64 is fixedly installed on the scraper 63, and the clamping block 64 is slidably arranged in the clamping groove 65.

[0053] During use, during the feeding process, the scraper 63 stays at the top of the vacuum hopper 1. During the discharging process or after the discharging is completed, the motor 61 is started. The motor 61 drives the lead screw 62 to rotate, causing the scraper 63 to move up and down inside the vacuum hopper 1 to scrape the residual materials attached to the inner wall of the hopper, effectively scraping the residual materials to the bottom of the hopper for successful discharging, which helps to keep the vacuum hopper 1 clean and hygienic.

[0054] Referring to Figure 1 and Figure 2 , a filter screen 8 is fixedly installed at one end of the vacuum pipeline 2 close to the vacuum hopper 1. An air back-blowing assembly 9 is installed on the vacuum pipeline 2. The air back-blowing assembly 9 includes an air back-blowing air bag 91, a quick exhaust valve 92, and an inflation valve 93. The air back-blowing air bag 91 is communicated with the vacuum pipeline 2. The quick exhaust valve 92 is arranged on the air back-blowing air bag 91. The exhaust valve is electrically connected to the controller 11. An inflation valve 93 is arranged on the air back-blowing air bag 91. The quick exhaust valve 92 is an existing technology and will not be elaborated here.

[0055] During use, when the vacuum loader is feeding, the materials in the storage bin 4 are sucked into the vacuum hopper 1 through the vacuum pump 3 and the suction pipe 5. At this time, the materials may enter the vacuum pump 3 through the suction pipe 5. The filter screen 8 plays a blocking role to prevent the materials from entering the vacuum pipeline 2 and the vacuum pump 3, ensuring the normal operation of the vacuum pump 3.

[0056] When a certain amount of material accumulates on or the filter screen 8 becomes blocked, the controller 11 controls the rapid exhaust valve 92 to open quickly, and sufficient gas is filled into the back-blowing air bag 91 through the inflation valve 93. The high-pressure gas in the back-blowing air bag 91 is instantly released into the vacuum pipeline 2, and the powerful air flow impacts the vacuum pipeline 2 in the reverse direction, blowing the material blocked at the filter screen 8 back into the vacuum hopper 1, ensuring the filtering effect of the filter screen 8 to protect the vacuum pump 3 and maintain the normal operation of the vacuum feeding machine.

[0057] Refer to Figure 1 and Figure 2 As shown in [relevant figure numbers], a controller 11 is fixedly installed on the outer wall of the vacuum hopper 1, and a material level monitor 10 is fixedly installed at the top of the inner wall of the vacuum hopper 1. The material level monitor 10 is electrically connected to the controller 11, and the electromagnetic valve 71, the vacuum pump 3, the motor 61, and the rapid exhaust valve 92 are all electrically connected to the controller 11.

[0058] During use, the material level monitor 10 can accurately monitor the height of the material in the hopper and transmit the data to the controller 11. The controller 11 judges the current operating state according to the received material level information. When the material level monitor 10 detects a low material level, the controller 11 sends a signal to start the vacuum pump 3 to generate a negative pressure in the vacuum hopper 1 for continuous feeding. When the material level monitor 10 detects a high material level, the controller 11 controls the vacuum pump 3 to close and the electromagnetic valve 71 to open, and the material flows out from the feeding pipe 7, realizing the automatic control and efficient operation of the vacuum feeding machine and improving the work efficiency.

[0059] The implementation principle of a vacuum feeding machine according to an embodiment of the present application is as follows: During use, the controller 11 controls the vacuum pump 3 to start. The vacuum pump 3 sucks out air through the vacuum pipeline 2, creating a negative pressure environment in the vacuum hopper 1. The granular and powdery materials in the storage bin 4 are sucked into the vacuum hopper 1 through the suction pipe 5 under the action of the pressure difference. When the material level monitor 10 detects a high material level, the feeding stops. The controller 11 controls the vacuum pump 3 to close and the electromagnetic valve 71 to open, and the material flows out from the feeding pipe 7 and is transported to the next production link. At the same time, the controller 11 controls the motor 61 to start, and the motor 61 drives the lead screw 62 to rotate, thereby driving the scraper 63 to move up and down, effectively scraping the residual material attached to the inner wall of the hopper and flowing out from the feeding pipe 7.

[0060] The filter screen 8 installed in the vacuum pipeline 2 blocks the material from entering the vacuum pipeline 2 and the vacuum pump 3. When the filter screen 8 is blocked, the controller 11 controls the rapid exhaust valve 92 to open, and the high-pressure gas in the back-blowing air bag 91 is instantly released into the vacuum pipeline 2, impacting the pipeline in the reverse direction, and blowing the material on the filter screen 8 back into the vacuum hopper 1. Through the automatic control of the controller 11, the work efficiency is improved, and at the same time, the quality and safety of the transported material are improved.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A vacuum feeding machine, characterized in that, Comprising: A vacuum hopper (1), at the top of the side wall of the vacuum hopper (1), a vacuum pipeline (2) is connected and communicated; A vacuum pump (3), the vacuum pump (3) is connected to one end of the vacuum pipeline (2) far away from the vacuum hopper (1); A storage bin (4), the storage bin (4) is used for storing granular and powdery materials to be transported; A suction pipe (5), one end of the suction pipe (5) is connected and communicated on the side wall of the vacuum hopper (1), and the end of the suction pipe (5) far away from the vacuum hopper (1) is arranged in the storage bin (4); A feeding pipe (7), the feeding pipe (7) is connected and communicated at the bottom of the vacuum hopper (1), and an electromagnetic valve (71) is arranged on the feeding pipe (7); A scraping assembly (6), the scraping assembly (6) is installed in the vacuum hopper (1), and the scraping assembly (6) is used for scraping the residual materials in the vacuum hopper (1).

2. The vacuum feeding machine according to claim 1, characterized in that, A clamping groove (65) is formed on the inner wall of the vacuum hopper (1), and the scraping assembly (6) includes: A motor (61), the fixed end of the motor (61) is fixedly installed on the vacuum hopper (1); A lead screw (62), the lead screw (62) is fixedly installed at the output end of the motor (61), and the lead screw (62) is arranged in the vacuum hopper (1); A scraper (63), the scraper (63) is threadedly connected to the lead screw (62), and the scraper (63) abuts against the vacuum hopper (1); A clamping block (64), the clamping block (64) is fixedly installed on the scraper (63), and the clamping block (64) is slidably arranged in the clamping groove (65).

3. The vacuum feeding machine according to claim 2, wherein A filter screen (8) is fixedly installed at one end of the vacuum pipeline (2) close to the vacuum hopper (1).

4. The vacuum feeding machine according to claim 3, characterized in that, An anti-blowing assembly (9) is installed on the vacuum pipeline (2), and the anti-blowing assembly (9) includes: An anti-blowing air bag (91), the anti-blowing air bag (91) is communicated with the vacuum pipeline (2); A quick exhaust valve (92), the quick exhaust valve (92) is arranged on the anti-blowing air bag (91); An inflation valve (93), the inflation valve (93) is arranged on the anti-blowing air bag (91).

5. The vacuum feeding machine according to claim 4, wherein, A controller (11) is fixedly installed on the outer wall of the vacuum hopper (1), a material level monitor (10) is fixedly installed at the top of the inner wall of the vacuum hopper (1), the material level monitor (10) is electrically connected to the controller (11), and the electromagnetic valve (71) is electrically connected to the controller (11).

6. The vacuum feeding machine according to claim 5, characterized in that, The vacuum pump (3), the motor (61) and the quick exhaust valve (92) are all electrically connected to the controller (11).

7. The vacuum feeding machine according to claim 1, characterized in that, The bottom of the vacuum hopper (1) is in a necked shape along the vertical downward direction.

8. The vacuum feeding machine according to claim 1, characterized in that, The suction pipe (5) is a pressure-resistant flexible pipe.

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