A vacuum loading system

Abstract

The utility model provides a kind of vacuum feeding system, its technical scheme is, including vacuum pump, the vacuum pump is communicated with the cloth bag upper lateral wall of vacuum hopper by suction duct, the cloth bag lower lateral wall of vacuum hopper is communicated with bunker by vacuum pipe, the bottom of bunker is by feeding mechanism Material is sent to next section;Bunker top is connected with ton bag.The utility model has the beneficial effects that (1) completely solve the problem of material residue, reduce raw material waste and labor cost;(2) double protection guarantees the stable operation of vacuum pump, prolongs equipment life;(3) nitrogen pipeline realizes filter material online cleaning, improves production continuity;(4) detachable recycled material collection tank realizes material recycling, reduces secondary pollution.

Description

Technical Field

[0001] This utility model belongs to the technical field of material conveying equipment, and in particular relates to a vacuum feeding system. Background Technology

[0002] Vacuum conveying systems, as efficient and clean material handling equipment, are widely used in chemical, pharmaceutical, food, and building materials industries, and are especially suitable for the automated transfer of powdered and granular materials. Their core principle is to use a vacuum pump to generate negative pressure, drawing material from the source (such as ton bags or silos) to the target container, offering advantages such as reduced dust pollution and lower labor intensity.

[0003] However, existing vacuum feeding systems still have the following problems in practical applications: (1) Material residue and waste: The end of the suction pipe of the traditional system usually cannot reach the bottom of the material source (such as ton bag), which makes it difficult to completely suck up the remaining material in the ton bag, resulting in raw material waste. In addition, manual cleaning of the remaining material is required, which increases the operating cost.

[0004] (2) Impurity contamination and equipment wear: During the suction process, the material is prone to dust and particulate impurities. If they enter the vacuum pump directly, it will cause wear and blockage of the internal parts of the pump body, shorten the service life of the equipment, and affect the stability of the vacuum degree and reduce the feeding efficiency.

[0005] (3) Filter media clogging and maintenance difficulties: After long-term use, the filter media (such as cloth bags) in the vacuum hopper are prone to material dust adhering to their surface. If not cleaned in time, it will lead to a decrease in air permeability and an increase in negative pressure loss. Frequent shutdowns for disassembly and cleaning are required, which will affect the continuity of production.

[0006] (4) Lack of recycling function: The materials scattered at the bottom of the vacuum hopper are usually discarded directly and cannot be recycled, which not only causes waste, but may also cause secondary pollution due to dust accumulation.

[0007] Therefore, in view of the problems existing in the current technology, such as material residue, equipment damage, cumbersome maintenance and insufficient adaptability, there is an urgent need for a vacuum feeding system with optimized structure and comprehensive functions to improve conveying efficiency, reduce costs and enhance applicability to special materials. Summary of the Invention

[0008] To address the problems in the prior art, this utility model provides a vacuum feeding system. The technical solution includes a vacuum pump, which is connected to the upper side wall of the cloth bag in the vacuum hopper via a suction pipe. The lower side wall of the cloth bag in the vacuum hopper is connected to the hopper via a vacuum tube. The bottom of the hopper is fed to the next stage by a feeding mechanism. The top of the hopper is connected to a ton bag.

[0009] In a preferred embodiment, a nitrogen pipeline is provided directly above the filter bag inside the vacuum hopper for purging the filter bag, and a recycling collection trough is detachably provided at the bottom of the vacuum hopper.

[0010] As a preferred embodiment, the vacuum pump's suction pipe is equipped with a filter to further prevent impurities from entering the vacuum pump during vacuuming.

[0011] In a preferred embodiment, a feed tee is installed on the top of the hopper, with the first port of the feed tee connected to the inside of the hopper, the second port connected to the vacuum tube, and the third port connected to the suction tube.

[0012] In a more preferred embodiment, the end of the suction pipe is located at the bottom of the ton bag, which is used to completely suck up the raw materials inside the ton bag and prevent raw material residue.

[0013] In a preferred embodiment, the feeding mechanism includes a screw feeder, a shut-off valve, and a discharge ball valve. The bottom of the hopper is connected to the feed inlet of the screw feeder via the shut-off valve, and the discharge outlet of the screw feeder is connected to the next section via the discharge ball valve.

[0014] In a preferred embodiment, the vacuum pump is controlled by a control console positioned above it.

[0015] The beneficial effects of this utility model are: (1) This utility model extends the end of the suction pipe to the bottom of the ton bag and uses a feeding tee to achieve precise connection between the ton bag and the vacuum hopper. It can completely suck up the raw materials in the ton bag and avoid the residual material caused by the suction pipe not being able to reach the bottom in the traditional system. This design not only reduces the waste of raw materials (especially for high-value powder and granular materials), but also eliminates the manual cleaning of the residual material in the ton bag, reducing the labor intensity and cost, and avoiding dust pollution caused by the exposure of residual material. (2) The filter bag inside the vacuum hopper can initially intercept dust and impurities in the material, preventing them from entering the subsequent pipeline with the airflow; on the other hand, the filter added to the vacuum pump suction pipeline can further filter fine impurities, forming a double protection of "filter bag initial filtration + pipeline fine filtration". This structure effectively avoids impurities from entering the vacuum pump and wearing the rotor and clogging the pump chamber, which not only ensures the vacuum stability of the vacuum pump and ensures that the feeding efficiency does not decrease, but also significantly extends the service life of the vacuum pump and reduces the equipment maintenance and replacement costs; (3) In view of the problem that dust easily adheres to the filter bags in the traditional system and that frequent shutdowns are required for disassembly and cleaning, this utility model sets a nitrogen pipeline directly above the filter bags, which can quickly remove the dust adhering to the surface of the filter bags by nitrogen purging. This "online purging and cleaning" method does not require shutdown to disassemble the filter material. The cleaning can be completed by controlling the opening and closing of the nitrogen pipeline through the control console. It effectively avoids negative pressure loss and production interruption caused by filter material blockage, and greatly improves the continuous operation capability of the system. It is especially suitable for the continuous production needs of chemical, pharmaceutical and other fields. (4) The removable recycling trough at the bottom of the vacuum hopper can collect a small amount of material that falls during the feeding process, avoiding the waste caused by the direct disposal of scattered materials in traditional systems. The collected material can be put back into production after inspection, improving the utilization rate of raw materials. At the same time, this design also avoids secondary dust pollution caused by the accumulation of scattered materials at the bottom of the equipment, maintaining the cleanliness of the production environment and meeting the hygiene requirements of the chemical, food and other fields for the production environment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] In the diagram: 1. Vacuum pump; 2. Filter; 3. Vacuum hopper; 4. Recycled material collection tank; 5. Vacuum pipe; 6. Feed tee; 7. Suction pipe; 8. Ton bag; 9. Hopper; 10. Shut-off valve; 11. Screw feeder; 12. Discharge ball valve; 13. Nitrogen pipeline; 14. Control console. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Example like Figure 1 The vacuum feeding system shown includes a vacuum pump 1, which is connected to the upper side wall of the cloth bag of the vacuum hopper 3 through a suction pipe. The lower side wall of the cloth bag of the vacuum hopper 3 is connected to the hopper 9 through a vacuum tube 5. The bottom of the hopper 9 sends the material to the next section through a feeding mechanism. The top of the hopper 9 is connected to a ton bag 8.

[0020] Furthermore, a nitrogen pipeline 13 is provided directly above the cloth bag inside the vacuum hopper 3 for purging the cloth bag, and a recycling collection trough 4 is detachably provided at the bottom of the vacuum hopper 3.

[0021] Furthermore, a filter 2 is provided on the suction pipe of the vacuum pump 1 to further prevent impurities from entering the vacuum pump 1 during vacuuming.

[0022] Furthermore, a feed tee 6 is installed on the top of the hopper 9. The first port of the feed tee 6 is connected to the inside of the hopper 9, the second port is connected to the vacuum tube 5, and the third port is connected to the suction tube 7.

[0023] Furthermore, the end of the suction pipe 7 is located at the bottom of the ton bag 8, which is used to completely suck up the raw materials inside the ton bag 8 to prevent raw material residue.

[0024] Furthermore, the feeding mechanism includes a screw feeder 11, a shut-off valve 10, and a discharge ball valve 12. The bottom of the hopper 9 is connected to the feed inlet of the screw feeder 11 through the shut-off valve 10, and the discharge outlet of the screw feeder 11 is connected to the next section through the discharge ball valve 12.

[0025] Furthermore, the vacuum pump 1 is controlled by a control console 14 located above it.

[0026] The operation process of the above system is as follows: Place the ton bag 8 in the designated position, ensuring the end of the suction pipe 7 is inserted into the bottom of the ton bag 8; simultaneously, install the recovery material collection trough 4 at the bottom of the vacuum hopper 3; start the vacuum pump 1 via the control panel 14 located above the vacuum pump 1 (the control panel 14 centrally controls the start / stop and operating parameters of the vacuum pump, achieving automated operation); the vacuum pump 1 begins to evacuate air through the suction pipe, creating a negative pressure environment within the vacuum hopper 3. Under this negative pressure, the raw material in the ton bag 8 enters the third port of the feed tee 6 through the suction pipe 7, and then enters the hopper 9 through the first port; simultaneously, some of the dust-laden airflow enters the vacuum hopper 9 through the top of the hopper 9 and the vacuum pipe 5. The empty hopper 3 and the filter bags inside the vacuum hopper 3 initially intercept dust in the airflow. The airflow that has been initially filtered by the filter bags continues to flow to the vacuum pump 1 through the suction pipe. Along the way, it passes through the filter 2 on the suction pipe, and finally the clean airflow is discharged by the vacuum pump 1 to ensure the stable operation of the pump. When too much dust adheres to the surface of the filter bags in the vacuum hopper 3, nitrogen is introduced into the air above the filter bags through the nitrogen pipeline 13 to ensure the continuous and efficient operation of the negative pressure system. After the material in the hopper 9 accumulates to a certain amount, the shut-off valve 10 is opened, and the material enters the screw feeder 11. Then the discharge ball valve 12 is opened, and the material is conveyed to the next section by the screw feeder 11.

[0027] After the material is fed, turn off the vacuum pump 1 via the control panel 14, disassemble the recycling trough 4 at the bottom of the vacuum hopper 3, and return the collected scattered material to the production process.

Claims

1. A vacuum feeding system, characterized in that, Includes a vacuum pump (1), which is connected to the upper side wall of the bag of the vacuum hopper (3) through a suction pipe. The lower side wall of the bag of the vacuum hopper (3) is connected to the silo (9) through a vacuum tube (5). The bottom of the silo (9) sends the material to the next section through a feeding mechanism. The top of the silo (9) is connected to the ton bag (8).

2. The vacuum feeding system according to claim 1, characterized in that, A nitrogen pipeline (13) is provided directly above the cloth bag in the vacuum hopper (3) for purging the cloth bag. The bottom of the vacuum hopper (3) is also detachably provided with a recycling trough (4).

3. The vacuum feeding system according to claim 1, characterized in that, The vacuum pump (1) is equipped with a filter (2) on its suction pipe to further prevent impurities from entering the vacuum pump (1) during vacuuming.

4. The vacuum feeding system according to claim 1, characterized in that, The top of the hopper (9) is equipped with a feed tee (6). The first port of the feed tee (6) is connected to the hopper (9), the second port is connected to the vacuum tube (5), and the third port is connected to the suction tube (7).

5. A vacuum feeding system according to claim 4, characterized in that, The end of the suction pipe (7) is located at the bottom of the ton bag (8) and is used to completely suck up the raw materials inside the ton bag (8) to prevent raw material residue.

6. The vacuum feeding system according to claim 1, characterized in that, The feeding mechanism includes a screw feeder (11), a shut-off valve (10), and a discharge ball valve (12). The bottom of the hopper (9) is connected to the feed inlet of the screw feeder (11) through the shut-off valve (10), and the discharge outlet of the screw feeder (11) is connected to the next section through the discharge ball valve (12).

7. The vacuum feeding system according to claim 1, characterized in that, The vacuum pump (1) is controlled by a control console (14) located above it.

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