Feeding mechanism based on vacuum feeding

Abstract

The utility model belongs to the technical field of mechanical equipment, and discloses a feeding mechanism based on vacuum feeding, which comprises a suction pipe, a discharge pipe, a pneumatic vacuum valve and an anti-blocking breather pipe, and is characterized in that the pneumatic vacuum valve is arranged between the suction pipe and the discharge pipe; the anti-blocking breather pipe is arranged on a branch of one end, far away from the pneumatic vacuum valve, of the suction pipe, one end of the anti-blocking breather pipe is communicated with the suction pipe, and the other end of the anti-blocking breather pipe is communicated with the atmosphere. The material suction device is simple in structure, easy to implement, smooth in material suction, not prone to blockage, good in applicability and high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical equipment, and particularly relates to a feeding mechanism based on vacuum feeding. Background Art

[0002] Wet granulators are mainly used to mix, crush, granulate and dry raw materials for subsequent processing and production. They are mainly used in the pharmaceutical and food industries to process products. In the pharmaceutical industry, they are mainly used to prepare granular medicines; in the food industry, they are mainly used to prepare food raw materials, such as infant food, instant soups and condiments. In addition to the pharmaceutical and food industries, wet granulators can also be used in other industries that require granule preparation, such as chemicals, veterinary drugs and feed.

[0003] At present, there are two main feeding methods for wet granulators: gravity feeding and vacuum feeding. The feeders used in the gravity feeding process are mostly open conical feeders, which rely solely on gravity for feeding. However, the above feeding methods have problems such as small feeder capacity, low feeding efficiency, insufficient smoothness when adding adhesives, and inability to effectively control the flow rate, which can easily lead to uneven particles produced. Vacuum feeding has a high degree of automation and is easy to operate. It can quickly and continuously transport materials to the wet granulator, and can also avoid dust flying during the transportation process, reducing pollution to the environment. However, for some materials that are more viscous or prone to agglomeration, vacuum feeding may cause poor transportation or blockage.

[0004] Based on the above analysis, it can be seen that the existing feeding mechanism of the wet granulator still has some defects. Therefore, the art urgently needs to improve the existing feeding mechanism to overcome the defects of the existing feeding mechanism. Summary of the invention

[0005] The utility model aims to provide a feeding mechanism based on vacuum feeding, which has a simple structure, is easy to implement, has smooth material suction, is not easy to be blocked, has good applicability and strong practicality.

[0006] The technical solution adopted to achieve the purpose of this utility model is:

[0007] A feeding mechanism based on vacuum feeding includes a suction pipe, a discharge pipe and an anti-blocking vent pipe, wherein one end of the discharge pipe is connected to the suction pipe, and the other end is connected to an external negative pressure generating device; the anti-blocking vent pipe is arranged on a branch of the suction pipe away from one end of the suction pipe, and one end of the anti-blocking vent pipe is connected to the suction pipe, and the other end is connected to the outside atmosphere.

[0008] Furthermore, a pneumatic vacuum valve is also included, and the pneumatic vacuum valve is arranged between the suction pipe and the discharge pipe.

[0009] Furthermore, a flexible connecting pipe is provided between the suction pipe and the pneumatic vacuum valve. The flexible connecting pipe is connected to the pneumatic vacuum valve through a reducing connector, and one end of the reducing connector with a larger opening is connected to the pneumatic vacuum valve.

[0010] Furthermore, the center line of the anti-blocking ventilation pipe is parallel to the center line of the suction pipe, the lower end of the anti-blocking ventilation pipe is connected to the suction pipe through an arc-shaped elbow, the upper end is provided with a supporting fixture, and the two ends of the supporting fixture are respectively fixedly connected to the outer surfaces of the suction pipe and the anti-blocking ventilation pipe.

[0011] Furthermore, a handle is provided on the outer wall of the upper part of the suction pipe.

[0012] Furthermore, an inclined cutout is provided at the end of the suction pipe away from one end of the discharge pipe.

[0013] Furthermore, the angle α between the inclined cut end surface and the center line of the suction pipe is 30° to 60°.

[0014] The beneficial effects of the utility model are:

[0015] 1. The anti-blocking vent pipe in the utility model can prevent material blockage, maintain air pressure balance, extend the service life of the suction pipe and improve work efficiency.

[0016] 2. The suction pipe and the pneumatic vacuum valve in the utility model are connected by a flexible connecting pipe, which can facilitate the flexible adjustment of the position of the suction pipe. When sucking materials, after the materials in one position in the material storage container are sucked out, the suction pipe can be moved to another position where more materials are accumulated; the flexible connecting pipe can also relieve the stress at the connection between the suction pipe and the pneumatic vacuum valve and reduce pipeline vibration, making the pipeline connection more reliable and improving the safety of the device.

[0017] 3. The reducer connector of the utility model can make the material pass more smoothly, reduce resistance, and further reduce the possibility of blockage; the reducer connector can also be customized according to actual needs to adapt to the needs of different materials and working environments, and improve the anti-blockage effect.

[0018] 4. The utility model opens an inclined cut at the end of the suction pipe to better control and regulate the flow of materials, allowing the materials to flow more smoothly in the suction pipe and reduce the possibility of blockage and accumulation; in addition, the inclined cut can also help regulate the flow of materials. By adjusting the inclination angle and size of the cut, the speed and flow of materials through the pipeline can be controlled to meet different needs in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the structure of the coordination of a suction pipe, an anti-blocking vent pipe, a handle and a first quick-release hose connector.

[0022] Figure 3 yes Figure 2 A left-view structural diagram of .

[0023] Figure 4 It is a schematic diagram of the structure of the discharge pipe, the pneumatic vacuum valve and the second quick-release hose connector.

[0024] In the figure: 1. Suction pipe; 2. Discharge pipe; 3. Pneumatic vacuum valve; 4. Anti-blocking ventilation pipe; 5. Flexible connecting pipe; 6. Reducer connector; 7. Arc elbow; 8. Support fixture; 9. Handle; 10. Inclined cutout; 11. First quick-release hose connector; 12. Second quick-release hose connector. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 4 As shown, a feeding mechanism based on vacuum feeding includes a suction pipe 1, a discharge pipe 2 and an anti-blocking vent pipe 4, wherein one end of the discharge pipe 2 is connected to the suction pipe 1, and the other end is connected to an external negative pressure generating device; the anti-blocking vent pipe 4 is arranged on a branch of the suction pipe 1 away from one end of the suction pipe 1, and one end of the anti-blocking vent pipe 4 is connected to the suction pipe 1, and the other end is connected to the outside atmosphere.

[0027] The pneumatic vacuum valve 3 is also included, and the pneumatic vacuum valve 3 is arranged between the suction pipe 1 and the discharge pipe 2 .

[0028] The vacuum feeding mechanism of the utility model is mainly used in existing wet granulators. The end of the suction pipe 1 is inserted into a container for storing raw materials, and the end is submerged in the raw materials. The end of the suction pipe 1 is connected to the feeding port of the wet granulator. In actual use, after the pneumatic vacuum valve 3 is started, the material is sucked from the storage container into the suction pipe 1 and flows along the suction pipe 1 to the pneumatic vacuum valve 3, and finally flows out from the discharge pipe 2.

[0029] The external negative pressure generating device is a common vacuum device in the existing wet granulator, and can be an existing vacuum feeder, such as the vacuum device disclosed in the patent with publication number CN214076514U, and the vacuum feeder disclosed in the patent with publication number CN114797666A. In actual use, the end of the discharge port 2 is connected to the external negative pressure generating device, and the negative pressure generating device generates a negative pressure environment during the material suction process to drive the material to move.

[0030] The suction pipe 1 in the utility model can be arranged vertically or inclined according to actual conditions. The discharge pipe 2 is arranged vertically, and this arrangement facilitates the material to flow into the discharge pipe 2 from the pneumatic vacuum valve 3 and then enter the wet granulator under the action of gravity, thereby preventing blockage.

[0031] The pneumatic vacuum valve 3 is a common pneumatic vacuum valve 3 in the prior art. The specific model can be selected and adjusted according to the actual field. The practical applicable fields include laboratories, manufacturing and medical fields. The pneumatic vacuum valve 3 has the advantages of high-precision control, easy operation, compact structure, good sealing, convenient maintenance, wide application range and safety and reliability. It adopts a pneumatic actuator to achieve fast and accurate opening and closing control. During the working process, the sensitivity and reliability of the pneumatic actuator on the pneumatic vacuum valve 3 can accurately control the opening of the valve to meet the accurate control requirements of the vacuum pipeline under different working conditions. In actual use, the control system of the pneumatic vacuum valve 3 can also be equipped with a PID control algorithm to further improve the control accuracy.

[0032] The anti-blocking vent pipe 4 in the utility model can prevent material blockage, maintain air pressure balance, extend the service life of the suction pipe 1 and improve work efficiency.

[0033] The anti-blocking vent pipe 4 can prevent material blockage. During the suction process, the material may block the suction pipe 1 due to humidity, particle size and viscosity. The anti-blocking vent pipe 4 is provided to facilitate air to enter the suction pipe 1 and help the material flow more smoothly.

[0034] The anti-blocking vent pipe 4 can maintain the air pressure balance. When the device of the utility model absorbs materials from the container storing materials, the air pressure in the container will change. The setting of the anti-blocking vent pipe 4 can balance the air pressure inside and outside the container, ensuring that the suction process is more stable.

[0035] The anti-blocking vent pipe 4 can extend the service life of the suction pipe 1. If there is no anti-blocking vent pipe 4, a certain negative pressure will be formed in the suction pipe 1 when sucking materials, resulting in a large pressure on the wall of the suction pipe 1. Long-term pressure may cause the suction pipe 1 to deform or be damaged. The anti-blocking vent pipe 4 can reduce the negative pressure in the pipe, thereby reducing the pressure on the suction pipe 1 and extending its service life.

[0036] The anti-blocking vent pipe 4 can improve the working efficiency. The anti-blocking vent pipe 4 can make the suction process smoother, reduce problems such as blockage and air pressure imbalance, thereby improving the working efficiency.

[0037] like Figure 1 As shown, a flexible connecting pipe 5 is provided between the suction pipe 1 and the pneumatic vacuum valve 3 . The flexible connecting pipe 5 is connected to the pneumatic vacuum valve 3 via a reducing connector 6 , and the end of the reducing connector 6 with a larger opening is connected to the pneumatic vacuum valve 3 .

[0038] The suction pipe 1 and the pneumatic vacuum valve 3 are connected by a flexible connecting pipe 5, which can facilitate the flexible adjustment of the position of the suction pipe 1. Specifically, when sucking materials, after the materials in one position in the material storage container are sucked out, the suction pipe 1 can be moved to another position where more materials are accumulated. In addition, the flexible connecting pipe 5 can also relieve the stress at the connection between the suction pipe 1 and the pneumatic vacuum valve 3 and reduce pipeline vibration, making the connection of the pipeline more reliable and improving the safety of the device. In the actual assembly process, the material of the flexible connecting pipe 5 can be flexibly selected, such as a rubber tube and a titanium alloy elastic tube.

[0039] In the present invention, the flexible connecting tube 5 is connected to the suction tube 1 and the reducer connector 6 through a quick-release hose connector. Specifically, the flexible connecting tube 5 is connected to the suction tube 1 through a first quick-release hose connector 11, and the flexible connecting tube 5 is connected to the reducer connector 6 through a second quick-release hose connector 12.

[0040] like Figures 1 to 3 As shown, a chuck is provided at one end of the first quick-release hose connector 11 that matches the suction pipe 1, and a corresponding chuck is also provided at one end of the suction pipe 1 that matches the first quick-release hose connector 11. One end of the first quick-release hose connector 11 is connected to the suction pipe 1 through a clamp, and a quick-release chuck sealing gasket is also provided on the outer periphery of the clamp, and the other end is fixedly connected to the flexible connecting pipe 5.

[0041] like Figure 1 and Figure 4As shown, a chuck is provided at one end of the second quick-release hose connector 12 that cooperates with the reducer connector 6, and a corresponding chuck is also provided at one end of the reducer connector 6 that cooperates with the second quick-release hose connector 12. One end of the second quick-release hose connector 12 is connected to the reducer connector 6 through a clamp, and a quick-release chuck sealing gasket is also provided on the outer periphery of the clamp, and the other end is fixedly connected to the flexible connecting pipe 5.

[0042] The pneumatic vacuum valve 3 is connected to the reducer 6 and the discharge pipe 2 through a clamp. A chuck is provided on the corresponding connecting parts of the pneumatic vacuum valve 3, the reducer 6 and the discharge pipe 2, and a quick-release chuck sealing gasket is provided on the outer periphery of the clamp after the clamp connection is completed.

[0043] In a preferred embodiment of the present utility model, the flexible connecting tube 5 is a silicone steel wire tube, which has obvious advantages in terms of softness, mechanical strength, high and low temperature resistance, corrosion resistance, shock absorption, fluid resistance, safe use, and easy installation. It can not only greatly improve work efficiency, but also extend the service life of the device.

[0044] The reducer connector 6 of the utility model can make the material pass more smoothly, reduce resistance, and further reduce the possibility of blockage. The reducer connector 6 of the utility model can also be customized according to actual needs to adapt to the needs of different materials and working environments and improve the anti-blocking effect.

[0045] like Figures 1 to 3 As shown, the center line of the anti-blocking ventilation pipe 4 is parallel to the center line of the suction pipe 1, the lower end of the anti-blocking ventilation pipe 4 is connected to the suction pipe 1 through an arc-shaped elbow 7, and a supporting fixture 8 is provided at the upper end, and the two ends of the supporting fixture 8 are fixedly connected to the outer surfaces of the suction pipe 1 and the anti-blocking ventilation pipe 4 respectively.

[0046] The center line of the anti-blocking vent pipe 4 is parallel to the center line of the suction pipe 1, so that the vent of the anti-blocking vent pipe 4 is consistent with the overall direction of the suction pipe 1, which is convenient for operation. The arc elbow 7 mainly plays the role of connecting the suction pipe 1 with the anti-blocking vent pipe 4. Designing it as an arc can make the center line of the anti-blocking vent pipe 4 parallel to the center line of the suction pipe 1 on the one hand, and change the flow direction of air on the other hand, so that the outside air is connected to the suction pipe 1. The support fixing member 8 fixes the anti-blocking vent pipe 4 with the suction pipe 1 to further improve the stability of the anti-blocking vent pipe 4. In the actual design process, the support fixing member 8 can be a solid connecting rod or a connecting block, or a connecting pipe, but considering that the material may enter the connecting pipe and cause the anti-blocking vent pipe 4 to be blocked, the support fixing member 8 of the utility model selects a solid structure. If there is no solid connecting member and only a hollow connecting pipe is used, it is necessary to pay attention to fixing the hollow connecting pipe with the suction pipe 1 and the outer wall of the anti-blocking vent pipe 4 when using the hollow connecting pipe for connection.

[0047] like Figures 1 to 3As shown, a handle 9 is also provided on the outer wall of the upper part of the suction pipe 1. The handle 9 is provided to facilitate the worker to move the position of the suction pipe 1 during the suction process. When the material at one position in the material storage container is sucked out, the suction pipe 1 can be moved to another position where more materials are accumulated by grabbing the handle 9. The specific number and position of the handle 9 can be adjusted according to actual needs.

[0048] like Figure 1 and Figure 2 As shown, an inclined cutout 10 is provided at the end of the suction pipe 1 away from the vacuum feeding valve.

[0049] The utility model provides an inclined cutout 10 at the end of the suction pipe 1 to better control and regulate the flow of materials, so that the materials can flow more smoothly in the suction pipe 1 and reduce the possibility of blockage and accumulation. The inclined cutout 10 can also help regulate the flow of materials. By adjusting the inclination angle and size of the cutout, the speed and flow of materials through the pipeline can be controlled to meet different needs in the production process. In the utility model, the angle α between the end face of the inclined cutout 10 and the center line of the suction pipe 1 is 30° to 60°. At the above angle, it can ensure that the materials can pass through the pipeline smoothly, reducing production interruptions and efficiency reductions caused by material accumulation or blockage. In a preferred embodiment of the utility model, the angle between the end face of the inclined cutout 10 and the center line of the suction pipe 1 is 45°.

[0050] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions and improvements made within the scope of the utility model should be included in the protection scope of the utility model.

Claims

1. A feeding mechanism based on vacuum feeding, characterized in that: The invention comprises a suction pipe (1), a discharge pipe (2) and an anti-blocking ventilation pipe (4), wherein one end of the discharge pipe (2) is connected to the suction pipe (1), and the other end is connected to an external negative pressure generating device; the anti-blocking ventilation pipe (4) is arranged on a branch of the suction pipe (1) away from one end of the suction pipe (1), and one end of the anti-blocking ventilation pipe (4) is connected to the suction pipe (1), and the other end is connected to the external atmosphere.

2. The feeding mechanism based on vacuum feeding according to claim 1, characterized in that: It also comprises a pneumatic vacuum valve (3), and the pneumatic vacuum valve (3) is arranged between the suction pipe (1) and the discharge pipe (2).

3. The feeding mechanism based on vacuum feeding according to claim 2, characterized in that: A flexible connecting pipe (5) is also provided between the suction pipe (1) and the pneumatic vacuum valve (3); the flexible connecting pipe (5) and the pneumatic vacuum valve (3) are connected via a reducing connector (6); and the end of the reducing connector (6) with a larger opening is connected to the pneumatic vacuum valve (3).

4. The feeding mechanism based on vacuum feeding according to claim 1, 2 or 3, characterized in that: The center line of the anti-blocking ventilation pipe (4) is parallel to the center line of the suction pipe (1); the lower end of the anti-blocking ventilation pipe (4) is connected to the suction pipe (1) through an arc-shaped bent pipe (7); the upper end is provided with a supporting fixture (8), and the two ends of the supporting fixture (8) are respectively fixedly connected to the outer surfaces of the suction pipe (1) and the anti-blocking ventilation pipe (4).

5. The feeding mechanism based on vacuum feeding according to claim 1, 2 or 3, characterized in that: A handle (9) is also provided on the outer wall of the upper part of the suction pipe (1).

6. The feeding mechanism based on vacuum feeding according to claim 4, characterized in that: A handle (9) is also provided on the outer wall of the upper part of the suction pipe (1).

7. The feeding mechanism based on vacuum feeding according to claim 1, 2, 3 or 6, characterized in that: An inclined cutout (10) is provided at the end of the suction pipe (1) away from the discharge pipe (2).

8. The feeding mechanism based on vacuum feeding according to claim 7, characterized in that: The included angle α between the end surface of the inclined cutout (10) and the center line of the suction pipe (1) is 30° to 60°.

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