An adjustable counterweight vacuum hopper

Abstract

The utility model discloses a kind of adjustable counterweight's vacuum hoppers, including hopper, hopper cover being set in the top of the hopper, and base being set in the bottom of the hopper, the inside of the base is equipped with discharging assembly;One side of the inside of the base is rotatably installed with balance shaft, the center of the balance shaft is equipped with support plate, the surface of the support plate is equipped with support rod, the support rod is equipped with the discharging valve plate matched with the lower end port of the discharging pipe;One end of the balance shaft located the outside of the base is equipped with detachable counterweight assembly, one side of the base is equipped with travel switch matched with the counterweight assembly;The counterweight assembly includes counterweight piece one, counterweight piece two and counterweight piece three;The utility model reaches control counterweight weight by increasing or reducing counterweight piece, when counterweight weight is higher, the effect of reducing counterweight can be reached by reducing the number of counterweight piece, for lighter material, reducing counterweight can reach the effect of preventing material jam.

Description

Technical Field

[0001] This utility model relates to the field of vacuum hopper technology, specifically to an adjustable-weight vacuum hopper. Background Technology

[0002] Existing vacuum hoppers often have fixed structures, making it difficult to flexibly adjust them according to actual usage requirements. Especially when processing different materials or requiring different feeding speeds, traditional vacuum hoppers lack an effective counterweight adjustment mechanism, leading to unstable feeding processes and the tendency to feed too much or too little material. Particularly when the raw material is relatively light, the material may get stuck at the discharge port due to the counterweight. Therefore, this application proposes a vacuum hopper with adjustable counterweight. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable counterweight vacuum hopper to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an adjustable counterweight vacuum hopper, comprising a hopper, a hopper cover disposed on the top of the hopper, and a base disposed on the bottom of the hopper, wherein a feeding assembly is provided inside the base;

[0005] The feeding assembly includes a feeding tube fixed inside the base. The center of the top of the base is provided with a discharge port corresponding to the feeding tube. The lower end of the feeding tube is inclined. A balance shaft is rotatably installed on one side inside the base. A support plate is provided at the center of the balance shaft. A support rod is provided on the surface of the support plate. A feeding valve plate that cooperates with the lower end of the feeding tube is provided on the support rod.

[0006] The balance shaft is provided with a detachable counterweight assembly at one end located on the outside of the base, and a limit switch that cooperates with the counterweight assembly is provided on one side of the base;

[0007] The counterweight assembly includes counterweight plate one, counterweight plate two, and counterweight plate three.

[0008] The counterweight cam structure, consisting of counterweight plate one, counterweight plate two, and counterweight plate three, drives the balance shaft to rotate counterclockwise under the action of gravity, causing the feeding valve plate to block the lower end of the feeding pipe. When the feeding valve plate blocks the lower end of the feeding pipe, the counterweight cam structure triggers the limit switch.

[0009] The hopper is equipped with a feed pipe on the top of one side, and the feed pipe is connected to an external raw material storage silo via a pipeline.

[0010] The hopper cover covers the opening at the top of the hopper, and a filter screen is provided between the hopper cover and the opening at the top of the hopper.

[0011] The hopper cover is equipped with an air outlet pipe at the top, which is connected to an external vacuum pump via a pipe.

[0012] The base has a through hole on one side, a mesh is provided at the through hole, and a pressure plate is provided on the outside of the mesh. The mesh is fixed to the base by the pressure plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention controls the counterweight by adding or removing counterweight plates. When the counterweight is high, the number of counterweight plates can be reduced to lighten the counterweight. For lighter materials, reducing the counterweight can prevent material jamming. The counterweight can be flexibly adjusted according to the characteristics of different materials and the required feeding speed, solving the problem of unstable feeding caused by the fixed structure of traditional vacuum hoppers.

[0015] The counterweight cam structure, composed of counterweight plate one, counterweight plate two, and counterweight plate three in the counterweight assembly, can drive the balance shaft to rotate under the action of gravity, thereby controlling the opening and closing of the feeding valve plate and achieving precise feeding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the isometric structure of the present invention in the first direction;

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the second-direction isometric structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the isometric structure of the base of this utility model;

[0020] Figure 5 This is a schematic diagram of the first direction of the feeding assembly of this utility model;

[0021] Figure 6 This is a schematic diagram of the second-direction isometric structure of the feeding assembly of this utility model;

[0022] Figure 7 This is a schematic diagram of the third-direction isometric structure of the feeding component of this utility model.

[0023] In the diagram: 10. Hopper; 11. Feed pipe; 20. Hopper cover; 21. Air outlet pipe; 30. Base; 31. Partition net; 32. Pressure plate; 33. Discharge port; 40. Feeding assembly; 41. Feeding pipe; 42. Balance shaft; 43. Support plate; 44. Support rod; 45. Feeding valve plate; 50. Counterweight assembly; 51. Counterweight plate one; 52. Counterweight plate two; 53. Counterweight plate three; 60. Limit switch. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figure 1-7 This utility model provides a technical solution: an adjustable counterweight vacuum hopper, including a hopper 10, a hopper cover 20 disposed on the top of the hopper 10, and a base 30 disposed at the bottom of the hopper 10. A feeding assembly 40 is disposed inside the base 30. A feeding pipe 11 is disposed on the top of one side of the hopper 10, and the feeding pipe 11 is connected to an external raw material storage chamber via a pipe. The hopper cover 20 covers the opening at the top of the hopper 10, and a filter screen is disposed between the hopper cover 20 and the opening at the top of the hopper 10. The top of the hopper cover 20 is provided with an air outlet pipe 21, which is connected to an external vacuum pump through a pipe. When it is necessary to feed material through the vacuum hopper, the vacuum pump is turned on, and then the vacuum pump extracts the air in the hopper 10 through the air outlet pipe 21, so that a vacuum is formed in the hopper 10. Then the raw material in the storage chamber is sucked into the hopper 10 under the action of vacuum adsorption, and the raw material is isolated by the filter screen to prevent the raw material from being sucked away by the vacuum pump. At the same time, the raw material sucked into the hopper 10 falls downward under the action of gravity.

[0026] The feeding assembly 40 includes a feeding pipe 41 fixed inside the base 30. A discharge port 33 corresponding to the feeding pipe 41 is opened at the center of the top of the base 30. The lower end of the feeding pipe 41 is inclined. A balance shaft 42 is rotatably installed on one side inside the base 30. A support plate 43 is provided at the center of the balance shaft 42. A support rod 44 is provided on the surface of the support plate 43. A feeding valve plate 45 that cooperates with the lower end of the feeding pipe 41 is provided on the support rod 44. A detachable counterweight assembly 50 is provided at one end of the balance shaft 42 located outside the base 30. A limit switch 60 that cooperates with the counterweight assembly 50 is provided on one side of the base 30. The counterweight assembly 50 includes a first counterweight plate 51, a second counterweight plate 52, and a third counterweight plate 53.

[0027] Specifically, the counterweight cam structure composed of counterweight plate 1 51, counterweight plate 2 52 and counterweight plate 3 53 drives the balance shaft 42 to rotate counterclockwise under the action of gravity, so that the feed valve plate 45 on the support rod 44 blocks the lower port of the feed pipe 41. At this time, the counterweight cam structure will trigger the limit switch 60, and the limit switch 60 can send a signal to indicate that the feed valve plate 45 is currently in a blocked state.

[0028] Furthermore, the limit switch 60 is electrically connected to an external PLC controller, which is also electrically connected to an external vacuum pump. When material needs to be discharged, the vacuum pump is controlled to work. The vacuum pump then extracts the air from the hopper 10 through the air outlet pipe 21, creating a vacuum inside the hopper 10. The raw material in the storage bin is then sucked into the hopper 10 under the action of vacuum adsorption. At the same time, the raw material sucked into the hopper 10 falls downward under the action of gravity, causing the raw material to fall onto the discharge valve plate 45, gradually filling the hopper 10. When the hopper 10 is close to full, the PLC controller will automatically stop the operation of the vacuum pump after the preset suction time is reached. The discharge valve plate 45 then loses vacuum suction. The weight of the material on the discharge valve plate 45 exceeds the force applied by the counterweight component 50 to the balance shaft 42. The discharge valve plate 45 automatically opens under the action of the gravity of the raw material in the hopper 10, and the material flows out quickly through the lower port of the discharge pipe 41, thus realizing the discharge.

[0029] When the raw material in the hopper 10 has fallen out, and the weight of the discharge valve plate 45 is less than the force applied by the counterweight component 50 to the balance shaft 42, the counterweight component 50 drives the balance shaft 42 to rotate counterclockwise under the action of gravity, so that the discharge valve plate 45 seals the lower port of the discharge pipe 41 again. At this time, the counterweight cam structure triggers the limit switch 60 again. The limit switch 60 sends a signal to the PLC controller, indicating that the current discharge valve plate 45 is in a blocked state, waiting for the next suction command. The continuous suction, discharge and suction cycle is run to realize automated suction.

[0030] Meanwhile, since the counterweight assembly 50 includes detachable counterweight plate 1 51, counterweight plate 2 52 and counterweight plate 3 53, the user can increase or decrease the number of counterweight plates according to actual needs, thereby adjusting the total weight of the counterweight assembly 50 to adapt to materials with different characteristics and feeding speed requirements. Specifically, when handling lighter materials, the number of counterweight plates can be reduced to lighten the counterweight and prevent materials from getting stuck at the feeding port; when handling heavier materials or requiring a faster feeding speed, the number of counterweight plates can be increased to enhance the counterweight and ensure the stability and efficiency of feeding.

[0031] The counterweight cam structure, consisting of counterweight plate 1 51, counterweight plate 2 52, and counterweight plate 3 53, drives the balance shaft 42 to rotate counterclockwise under the action of gravity, causing the discharge valve plate 45 to block the lower port of the discharge pipe 41. When the discharge valve plate 45 blocks the lower port of the discharge pipe 41, the counterweight cam structure triggers the limit switch 60, which sends a signal to the PLC controller. The controller determines whether the discharge valve plate 45 is in the blocking position based on the signal status, thereby monitoring the discharge process. When the counterweight needs to be adjusted, the user can change the total weight of the counterweight assembly 50 by disassembling or installing counterweight plate 1 51, counterweight plate 2 52, and counterweight plate 3 53, so that the vacuum hopper can flexibly adapt to the discharge requirements of different materials.

[0032] The base 30 has a through hole on one side, and a partition net 31 is provided at the through hole. A pressure plate 32 is provided on the outside of the partition net 31. The partition net 31 is fixed to the base 30 by the pressure plate 32 to ensure that the internal atmospheric pressure of the base 30 is balanced with the external atmospheric pressure. At the same time, the partition net 31 can prevent external debris from entering the interior of the base 30 and avoid interfering with the normal operation of the feeding component 40.

[0033] Working principle: When in use, the feed pipe 11 is connected to the external raw material storage bin through a pipe, and the air outlet pipe 21 is connected to the external vacuum pump through a pipe. When feeding is required, the vacuum pump is turned on. The vacuum pump extracts the air in the hopper 10 through the air outlet pipe 21, so that a vacuum environment is formed in the hopper 10. At this time, the raw material in the raw material storage bin is sucked into the hopper 10 under the vacuum adsorption. During this process, the filter screen will block the raw material to prevent it from being sucked away by the vacuum pump.

[0034] The raw material in the suction hopper 10 falls onto the discharge valve plate 45 under gravity, gradually filling the hopper 10. When the hopper 10 is nearly full, the PLC controller will automatically stop the vacuum pump after the preset suction time is reached. The discharge valve plate 45 then loses vacuum suction. When material needs to be discharged, the weight of the material on the discharge valve plate 45 exceeds the force applied by the counterweight component 50 to the balance shaft 42. The discharge valve plate 45 automatically opens under the gravity of the raw material in the hopper 10, and the material quickly passes through the discharge pipe. Material flows out from the lower port of 41, realizing material feeding; when the material in the hopper 10 has fallen all, the weight of the feeding valve plate 45 is less than the force applied by the counterweight component 50 to the balance shaft 42. Under the action of gravity, the counterweight component 50 drives the balance shaft 42 to rotate counterclockwise, so that the feeding valve plate 45 re-blocks the lower port of the feeding pipe 41. At this time, the counterweight cam structure triggers the limit switch 60 again. The limit switch 60 sends a signal to the PLC controller, indicating that the feeding valve plate 45 is currently in a blocked state and waiting for the next feeding command.

[0035] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. An adjustable counterweight vacuum hopper, comprising a hopper (10), a hopper cover (20) disposed on the top of the hopper (10), and a base (30) disposed on the bottom of the hopper (10), characterized in that: The base (30) is equipped with a feeding assembly (40); The feeding assembly (40) includes a feeding tube (41) fixed inside the base (30). The center of the top of the base (30) is provided with a discharge port (33) corresponding to the feeding tube (41). The lower end of the feeding tube (41) is inclined. A balance shaft (42) is rotatably installed on one side inside the base (30). A support plate (43) is provided at the center of the balance shaft (42). A support rod (44) is provided on the surface of the support plate (43). A feeding valve plate (45) that cooperates with the lower end of the feeding tube (41) is provided on the support rod (44). The balance shaft (42) is provided with a detachable counterweight assembly (50) at one end located outside the base (30), and a limit switch (60) that cooperates with the counterweight assembly (50) is provided on one side of the base (30). The counterweight assembly (50) includes counterweight plate one (51), counterweight plate two (52) and counterweight plate three (53).

2. The adjustable counterweight vacuum hopper according to claim 1, characterized in that: The counterweight cam structure composed of counterweight plate one (51), counterweight plate two (52) and counterweight plate three (53) drives the balance shaft (42) to rotate counterclockwise under the action of gravity, so that the feed valve plate (45) blocks the lower port of the feed pipe (41). When the feed valve plate (45) blocks the lower port of the feed pipe (41), the counterweight cam structure triggers the limit switch (60).

3. The adjustable counterweight vacuum hopper according to claim 1, characterized in that: The top of one side of the hopper (10) is provided with a feed pipe (11), which is connected to an external raw material storage silo via a pipeline.

4. The adjustable counterweight vacuum hopper according to claim 1, characterized in that: The hopper cover (20) covers the opening at the top of the hopper (10), and a filter screen is provided between the hopper cover (20) and the opening at the top of the hopper (10).

5. The adjustable counterweight vacuum hopper according to claim 1, characterized in that: The top of the hopper cover (20) is provided with an air outlet pipe (21), which is connected to an external vacuum pump through a pipe.

6. The adjustable counterweight vacuum hopper according to claim 1, characterized in that: The base (30) has a through hole on one side, and a mesh (31) is provided at the through hole. A pressure plate (32) is provided on the outside of the mesh (31), and the mesh (31) is fixed on the base (30) by the pressure plate (32).

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