Vacuum feeding machine with anti-blocking structure

Abstract

The utility model discloses a vacuum feeding machine with an anti-blocking structure, which comprises a container, a vacuum pump arranged outside the container and used for vacuumizing the inside of the container to form a negative pressure environment, a negative pressure sensor used for detecting the vacuum degree inside the container, and a feeding mechanism used for controlling feeding into the container, the vacuum pump communicates with the interior of the container through a communicating pipe, a filter screen is arranged at the end, extending into the container, of the communicating pipe, the two sides of the filter screen are connected to the container through buffer mechanisms, a vibration motor is arranged on the side, away from the buffer mechanisms, of the filter screen, a motor box is arranged below the filter screen, and a first motor is arranged in the motor box. A rotating rod is connected to the power output end of the first motor, scrapers are connected to the two sides of the rotating rod, cleaning brushes are arranged on the scrapers, the negative pressure sensor is electrically connected with the feeding mechanism, and a discharging opening is formed in the side, away from the vacuum pump, of the container. According to the utility model, the occurrence of blockage can be efficiently reduced, the maintenance is convenient, and the scraping effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum feeding equipment, and particularly relates to a vacuum feeder with an anti-blocking structure. Background Art

[0002] Traditional vacuum feeders mainly rely on vacuum suction to convey granular and powdery materials. Although they can achieve dust-free closed-pipe conveying and improve the cleanliness of the working environment, there are some deficiencies. For example, long-term accumulation of materials may cause caking and block the discharge port. The cleaning process is time-consuming and laborious, affecting the overall working efficiency.

[0003] The existing patent (Publication No.: CN216335253U) discloses an anti-blocking vacuum feeder, which includes a storage chamber, a vacuum pump, and a filter. The top end of the storage chamber is provided with a filter chamber communicating with it. The filter is installed at the top end inside the filter chamber. The vacuum pump is installed at the top end of the storage chamber, and a connecting pipe is provided at the input end of the vacuum pump. The connecting pipe communicates with the inside of the filter. One side of the storage chamber is provided with a feed inlet, and the bottom end of the storage chamber is provided with a discharge port, and a discharge valve is provided at the bottom end of the discharge port. A controller is installed on the outer side wall of the storage chamber. During operation, it can avoid blocking of the filter and the discharge port, save energy and protect the environment, and has strong practicability. However, the inventor found the following problems in the process of researching and developing such technologies:

[0004] The existing anti-blocking vacuum feeder uses a spring to vibrate the particles on the dust bag, with low efficiency and frequent maintenance. Relying on a single scraper to scrape the residual dust on the inner wall of the inner cavity cannot remove the dust in the corners, and the effect is poor. At the same time, the feed inlet cannot control the feed volume according to the internal situation, and overfeeding may cause blockage. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a vacuum feeder with an anti-blocking structure, which can efficiently reduce the occurrence of blockage, is convenient for maintenance, and has a good scraping effect.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A vacuum feeder with an anti-clogging structure comprises a container, wherein a vacuum pump, a negative pressure sensor and a feeding mechanism are arranged on the outside of the container, the vacuum pump is connected to the interior of the container through a connecting pipe, a filter is arranged at one end of the connecting pipe extending into the interior of the container, both sides of the filter are connected to the container through a buffer mechanism, a vibration motor is arranged on the side of the filter away from the buffer mechanism, a motor box is arranged below the filter, a first motor is arranged inside the motor box, a rotating rod is connected to the power output end of the first motor, scrapers are connected on both sides of the rotating rod, a cleaning brush is arranged on the scraper, the negative pressure sensor is electrically connected to the feeding mechanism, and a discharge port is arranged on the side of the container away from the vacuum pump.

[0008] Furthermore, the buffer mechanism includes an upper support, a lower support and a buffer assembly, the upper support is fixed on the filter net, the lower support is fixed on the container, the buffer assembly is connected between the upper support and the lower support, and the upper support can move up and down relative to the lower support.

[0009] Furthermore, the buffer assembly includes a guide structure, a first spring and a second spring, the guide structure is telescopically connected between the upper support and the lower support, the first spring is arranged inside the guide structure, and the second spring is sleeved outside the guide structure.

[0010] Furthermore, a positioning rod is fixedly provided inside the container, the positioning rod is arranged on the outside of the filter screen, and the lower support is fixed on the positioning rod.

[0011] Furthermore, the feeding mechanism includes a valve body, a valve flap, a rotating shaft, a valve handle and a driving assembly. The valve body is fixed on the container and its feeding channel is connected to the interior of the container. The valve flap is arranged at the center of the feeding channel of the valve body. One end of the valve flap is rotatably connected to the valve body through the rotating shaft, the other end of the valve flap is fixedly connected to one end of the valve handle, and the other end of the valve handle is transmission-connected to the driving assembly.

[0012] Furthermore, the driving assembly includes a control box, a controller, a second motor and a transmission rod, the control box is fixed on the container, the controller, the second motor and the transmission rod are all installed in the control box, the power output end of the second motor is connected to one end of the transmission rod, the other end of the transmission rod is connected to the valve handle, the controller is electrically connected to the negative pressure sensor and the second motor respectively, and the controller controls the operation of the second motor through the connection with the negative pressure sensor.

[0013] Furthermore, two groups of the cleaning brushes are provided on each of the scraping blades, and the two groups of the cleaning brushes are symmetrically arranged on the two side surfaces of the scraping blade.

[0014] Furthermore, the container is cylindrical, and a plurality of mounting blocks are fixedly provided on the outer wall of the container, and the plurality of mounting blocks are uniformly arranged along the circumferential direction of the container.

[0015] Implementing the vacuum feeding machine with an anti-blocking structure of the present utility model, compared with the prior art, has the following beneficial effects:

[0016] (1) The vacuum feeding machine with an anti-blocking structure of the present utility model is provided with a vibrating filter screen below the vacuum machine. The vibration generated by the vibration motor can effectively prevent the accumulation of materials on the filter screen, thereby reducing the occurrence of blockages. The vibration helps the materials to pass through the filter screen smoothly, improves the filtering efficiency, reduces the equipment wear and maintenance requirements caused by blockages, extends the service life of the vacuum feeding machine, reduces the downtime caused by cleaning and maintenance, ensures that the vacuum feeding machine can operate continuously and efficiently, and improves the production efficiency.

[0017] (2) The vacuum feeding machine with an anti-blocking structure of the present utility model is provided with cleaning brushes on both sides of the scraping blade. The cleaning brushes can effectively remove the residual materials on both sides and the inner cavity wall of the scraping blade, ensure the cleanliness of the scraping blade, thereby maintaining the efficient operation of the system. By reducing the residual and accumulation of materials, the cleaning brushes help to maintain the stable operation of the vacuum feeding machine and reduce the equipment failures caused by blockages or contaminations.

[0018] (3) The vacuum feeding machine with an anti-blocking structure of the present utility model uses a negative pressure sensor to monitor the vacuum degree inside the container in real time and automatically adjusts the valve opening of the feeding mechanism according to the set parameters, which can effectively prevent blockages caused by the excessive feeding of materials. This design can maintain a stable material feeding speed, avoid uneven load on the filter screen caused by uneven feeding. This system realizes automatic control, reduces manual intervention, and reduces the operation complexity. By reducing blockages and uneven feeding, the service life of the vacuum feeding machine can be extended. At the same time, by maintaining a stable feeding speed and preventing blockages, the production efficiency of the vacuum feeding machine can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0020] Figure 1 It is a schematic structural diagram of the vacuum feeding machine with an anti-blocking structure provided by the embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the filter screen and the shock absorption mechanism in the embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the negative pressure sensor and the feeding mechanism in the embodiment of the present utility model;

[0023] Figure 4 This is a schematic structural diagram of the scraper and the cleaning brush in the embodiment of the present utility model.

[0024] Markings in the figure:

[0025] 1. Container; 11. Discharge port; 12. Positioning rod; 13. Mounting block; 2. Vacuum pump; 3. Negative pressure sensor; 4. Feeding mechanism; 41. Valve body; 42. Valve flap; 43. Rotating shaft; 44. Valve handle; 45. Control box; 46. Controller; 47. Second motor; 48. Transmission rod; 5. Filter screen; 6. Vibration motor; 7. Buffer mechanism; 71. Upper support; 72. Lower support; 73. Buffer assembly; 731. Guide post; 732. Guide sleeve; 733. First spring; 734. Second spring; 8. Stirring mechanism; 81. Motor box; 82. First motor; 83. Rotating rod; 84. Scraper; 85. Cleaning brush; 9. Connecting pipe. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] As Figures 1 to 4 shown, a vacuum feeding machine with an anti-blocking structure includes a container 1. A vacuum pump 2 for evacuating the inside of the container 1 to form a negative pressure environment, a negative pressure sensor 3 for detecting the vacuum degree inside the container 1, and a feeding mechanism 4 for controlling the feeding into the container 1 are arranged outside the container 1. A filter screen 5 for intercepting materials from being sucked into the vacuum pump 2, a vibration motor 6 for transmitting vibration mechanical energy to the filter screen 5, a buffer mechanism 7 for reducing the influence of vibration on other parts of the equipment, and a stirring mechanism 8 for stirring materials are arranged inside the container 1.

[0029] The container 1 is made of metal materials, which plays a role in maintaining vacuum and support. The welding requirements of the container 1 need to ensure no air leakage so as to maintain good vacuum performance of the container 1.

[0030] The vacuum pump 2 is installed on the top of the container 1 and is in communication with the interior of the container 1 through a connecting pipe 9. In this embodiment, the vacuum pump 2 should be selected with appropriate force and capacity to ensure sufficient negative pressure generation; the connecting pipe 9 is vertically inserted into the top of the inner cavity of the container 1, and the diameter and length of the connecting pipe 9 should be designed according to the material characteristics and the conveying distance to ensure efficient material conveying.

[0031] The filter screen 5 is arranged at one end of the connecting pipe 9 extending into the container 1. In this embodiment, the filter screen 5 is in the shape of a mesh box, and its upper end is provided with a mating port that is slidably sleeved with the connecting pipe 9 to ensure that the filter screen 5 can block the material from entering the vacuum pump 2 through the connecting pipe 9. The pore diameter of the mesh of the filter screen 5 is selected according to the material particle size.

[0032] Both sides of the filter screen 5 are connected to the container 1 through a buffer mechanism 7. In this embodiment, the buffer mechanism 7 includes an upper support 71, a lower support 72, and a buffer component 73. The upper support 71 is fixed on the filter screen 5, the lower support 72 is fixed on the container 1, the buffer component 73 is connected between the upper support 71 and the lower support 72, and the upper support 71 can move up and down relative to the lower support 72. When the filter screen 5 vibrates, the vibration energy of the filter screen 5 will be transmitted to the container 1 through the upper support 71, the buffer component 73, and the lower support 72. During this transmission process, the setting of the buffer component 73 can buffer the impact of the vibration of the filter screen 5 on the container 1, thereby reducing the impact of the vibration on other parts of the equipment.

[0033] The vibration motor 6 is arranged on the side of the filter screen 5 away from the buffer mechanism 7. When the vibration motor 6 operates, it can transmit vibration mechanical energy to the filter screen 5, and the residual material dust on the surface of the filter screen 5 will fall off through vibration, preventing blockage on the surface of the filter screen 5. Specifically, the vibration motor 6 is installed at the bottom of the filter screen 5, and the frequency and amplitude of the vibration motor 6 need to be adjustable to optimize according to the material characteristics and working conditions.

[0034] The stirring mechanism 8 is arranged below the filter screen 5. The stirring mechanism 8 includes a motor box 81, a first motor 82, a rotating rod 83 and a scraper 84. The motor box 81 is fixed on the container 1 through a mounting bracket and is located below the filter screen 5. The first motor 82 is installed in the motor box 81. The power output end of the first motor 82 is connected to the rotating rod 83. Scrapers 84 are connected to both sides of the rotating rod 83. Cleaning brushes 85 are arranged on the scrapers 84. The negative pressure sensor 3 is electrically connected to the feeding mechanism 4. An outlet is arranged on one side of the container 1 away from the vacuum pump 2. It should be noted that the motor box 81 can protect the first motor 82 from being affected by powdery materials during operation in the inner cavity of the container 1, extending its service life; the rotating rod 83, as the supporting structure for the scraper 84 and the cleaning brush 85, should have sufficient strength and stiffness to ensure stability during rotation. The rotating rod 83 is usually made of corrosion-resistant materials to resist the erosion of materials. The two groups of scrapers 84 are arranged symmetrically on the left and right of the rotating rod 83. The material of the scraper 84 needs to consider its compatibility with the material, as well as wear resistance and strength. The shape and size of the scraper 84 should be designed to effectively scrape the residual materials on the inner wall; the cleaning brush 85 should be selected with suitable materials and hardness to effectively remove the residual materials without damaging the inner wall. The installation method of the cleaning brush 85 should be convenient for replacement and maintenance.

[0035] The negative pressure sensor 3 is electrically connected to the feeding mechanism 4. Thus, through the real-time sensing of the negative pressure sensor 3, the feeding amount of the feeding mechanism 4 can be adjusted in real time, so as to control the feeding speed of the material according to the vacuum degree in the container 1 and prevent the material from entering the container 1 too fast and causing blockage.

[0036] An outlet 11 is arranged on one side of the container 1 away from the vacuum pump 2. Specifically, the outlet 11 is arranged at the bottom of the container 1. To facilitate the control of the discharging of the outlet 11, a valve is arranged on the outlet 11.

[0037] Embodiment 2

[0038] On the basis of the above embodiment, the solution in the above Embodiment 1 is further refined and introduced in combination with the following specific working methods, as Figures 1 to 4 shown, and the details are described below:

[0039] As a preferred embodiment, the buffer assembly 73 includes a guide structure, a first spring 733 and a second spring 734. The guide structure is telescopically connected between the upper support 71 and the lower support 72. The first spring 733 is arranged inside the guide structure, and the second spring 734 is sleeved on the outside of the guide structure. Specifically, the guide structure is composed of a guide column 731 and a guide sleeve 732, the guide column 731 is fixed on the upper support 71, the guide sleeve 732 is fixed on the lower support 72, the lower end of the guide column 731 is slidably inserted in the guide sleeve 732, the first spring 733 is sleeved on the outer side of the guide sleeve 732, the upper end of the first spring 733 is against the upper support 71, the lower end of the first spring 733 is against the lower support 72, the second spring 734 is arranged in the guide sleeve 732, the upper end of the second spring 734 is against the lower end of the guide column 731, and the lower end of the second spring 734 is against the bottom of the guide sleeve 732. Therefore, through the cooperation between the guide column 731 and the guide sleeve 732, the upper support 71 can only move up and down relative to the lower support 72, so that the filter screen 5 vibrates in the vertical direction to prevent the filter screen 5 from shifting under multi-directional vibration; at the same time, through the setting of double springs, the impact of the vibration of the filter screen 5 on the container 1 can be better cushioned.

[0040] As a preferred embodiment, in order to conveniently fix the position of the filter screen 5 at one end of the connecting pipe 9, a positioning rod 12 is fixed inside the container 1, and the positioning rod 12 is arranged on the outside of the filter screen 5, and the lower support 72 is fixed on the positioning rod 12. Further, the positioning rod 12 is made of metal material, preferably stainless steel material, to prevent residue from being generated on the surface and have strong corrosion resistance.

[0041] As a preferred embodiment, in order to facilitate the control of feeding into the container 1, the feeding mechanism 4 is preferably an electric valve, specifically: the feeding mechanism 4 includes a valve body 41, a valve flap 42, a rotating shaft 43, a valve handle 44 and a driving assembly, the valve body 41 is fixed on the container 1 and its feeding channel is connected to the inside of the container 1, the valve flap 42 is arranged at the center of the feeding channel of the valve body 41, one end of the valve flap 42 is rotatably connected to the valve body 41 through the rotating shaft 43, the other end of the valve flap 42 is fixedly connected to one end of the valve handle 44, and the other end of the valve handle 44 is drivingly connected to the driving assembly. Further, the valve body 41, the valve flap 42, the rotating shaft 43, etc. are preferably made of stainless steel materials, so that they have good corrosion resistance and extend the service life.

[0042] As a preferred embodiment, the drive assembly includes a control box 45, a controller 46, a second motor 47 and a transmission rod 48. The control box 45 is fixed on the container 1. The controller 46, the second motor 47 and the transmission rod 48 are all installed in the control box 45. The power output end of the second motor 47 is connected to one end of the transmission rod 48, and the other end of the transmission rod 48 is connected to the valve handle 44. The controller 46 is electrically connected to the negative pressure inductor 3 and the second motor 47 respectively. The controller 46 controls the operation of the second motor 47 through the connection with the negative pressure inductor 3, so that the equipment realizes automatic control, reduces manual intervention, reduces operation complexity, maintains a stable feeding speed and prevents blockage, can improve the production efficiency of the vacuum feeding machine, and at the same time reduces material waste by optimizing the feeding speed, meeting the requirements of environmental protection and energy conservation.

[0043] As a preferred embodiment, two groups of cleaning brushes 85 are provided on each scraper 84, and the two groups of cleaning brushes 85 are symmetrically arranged on the two side faces of the scraper 84. Thus, through the combination of the scraper 84 and the cleaning brushes 85, driven by the rotating rod 83, the residual materials on the inner wall of the container 1 are efficiently removed, reducing the risk of material accumulation and blockage. This automatic cleaning mechanism reduces the need for manual cleaning, reducing operation costs and labor intensity.

[0044] As a preferred embodiment, the container 1 is cylindrical, and a plurality of mounting blocks 13 are fixedly provided on the outer wall of the container 1, and are evenly arranged along the circumferential direction of the container 1. Further, the mounting blocks 13 are made of metal materials. Through the connection of the mounting blocks 13, the equipment can be stably fixed on the supporting mounting position. The container 1 being set to be cylindrical can effectively reduce the residual amount of materials on the inner wall and reduce the formation of blockage.

[0045] As a preferred embodiment, the model of the negative pressure inductor 3 is ZSE20F / ISE20, and the negative pressure inductor 3 can detect the vacuum degree inside the container 1 in real time to ensure the smooth transmission of materials and the normal operation of the equipment.

[0046] The working process of the present utility model is as follows: First, the material is added into the container 1 from the feeding mechanism 4. Then, under the action of the vacuum pump 2, the material is stored in the container 1 in a vacuum state. A filter screen 5 is provided at the air inlet of the connecting pipe 9 of the vacuum pump 2 to prevent dust from entering the vacuum pump 2. At the same time, the vibration motor 6 on the filter screen 5 is started synchronously to avoid the accumulation of dust on the surface of the filter screen 5 and cause blockage. Then, the first motor 82 drives the rotating rod 83 to drive the scraper 84 and the cleaning brush 85 to start scraping the dust on the inner wall of the container 1. At the same time, the negative pressure sensor 3 provided on one side of the container 1 monitors the internal vacuum degree in real time. When it detects fluctuations in the vacuum degree, it will control the feeding mechanism 4 to slow down the feeding speed to prevent blockage.

[0047] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications falling within the scope of the present utility model.

[0048] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and its equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A vacuum feeder with an anti-blocking structure, characterized in that: It includes a container, the outside of which is provided with a vacuum pump, a negative pressure sensor and a feeding mechanism, the vacuum pump is connected to the interior of the container through a connecting pipe, a filter is provided at one end of the connecting pipe extending into the interior of the container, both sides of the filter are connected to the container through a buffer mechanism, a vibration motor is provided on the side of the filter away from the buffer mechanism, a motor box is provided below the filter, a first motor is provided inside the motor box, a rotating rod is connected to the power output end of the first motor, scrapers are connected to both sides of the rotating rod, a cleaning brush is provided on the scraper, the negative pressure sensor is electrically connected to the feeding mechanism, and a discharge port is provided on the side of the container away from the vacuum pump.

2. The vacuum feeder with an anti-blocking structure according to claim 1, characterized in that: The buffer mechanism includes an upper support, a lower support and a buffer assembly, the upper support is fixed on the filter net, the lower support is fixed on the container, the buffer assembly is connected between the upper support and the lower support, and the upper support can move up and down relative to the lower support.

3. The vacuum feeder with an anti-blocking structure according to claim 2, characterized in that: The buffer assembly includes a guide structure, a first spring and a second spring. The guide structure is telescopically connected between the upper support and the lower support. The first spring is arranged inside the guide structure, and the second spring is sleeved outside the guide structure.

4. The vacuum feeder with an anti-blocking structure according to claim 2, characterized in that: A positioning rod is fixedly arranged inside the container, the positioning rod is arranged on the outside of the filter screen, and the lower support is fixed on the positioning rod.

5. The vacuum feeder with an anti-blocking structure according to claim 1, characterized in that: The feeding mechanism includes a valve body, a valve flap, a rotating shaft, a valve handle and a driving assembly. The valve body is fixed on the container and its feeding channel is connected to the interior of the container. The valve flap is arranged at the center of the feeding channel of the valve body. One end of the valve flap is rotatably connected to the valve body through the rotating shaft, the other end of the valve flap is fixedly connected to one end of the valve handle, and the other end of the valve handle is transmission-connected to the driving assembly.

6. The vacuum feeder with an anti-blocking structure according to claim 5, characterized in that: The driving assembly includes a control box, a controller, a second motor and a transmission rod. The control box is fixed on the container. The controller, the second motor and the transmission rod are all installed in the control box. The power output end of the second motor is connected to one end of the transmission rod, and the other end of the transmission rod is connected to the valve handle. The controller is electrically connected to the negative pressure sensor and the second motor respectively, and the controller controls the operation of the second motor through the connection with the negative pressure sensor.

7. The vacuum feeder with an anti-blocking structure according to claim 1, characterized in that: Each scraper is provided with two groups of cleaning brushes, and the two groups of cleaning brushes are symmetrically arranged on the two side elevations of the scraper.

8. The vacuum feeder with an anti-blocking structure according to claim 1, characterized in that: The container is cylindrical, and a plurality of mounting blocks are fixedly arranged on the outer wall of the container, and the plurality of mounting blocks are evenly arranged along the circumferential direction of the container.

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