A whitening agent solid vacuum feeding machine device
By combining the pneumatic hammer frame and the compressed air backflushing device, the problem of filter blockage in the vacuum feeder was solved, enabling stable conveying and efficient feeding of whitening agent solid materials, and improving production continuity and capacity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI SHENMAO NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-02
AI Technical Summary
When existing vacuum feeders transport solid whitening agents for extended periods, the filter element is prone to adhering to the powder material, forming a material accumulation layer. This leads to decreased air permeability, reduced vacuum pump performance, and impacts production continuity and capacity stability.
The pneumatic hammer frame drives the hammer head to strike the powder silo wall to clear blockages, and a compressed air back-blowing device removes powder from the filter surface to prevent blockages. The material is then transported stably through the unloading assembly.
It effectively prevents filter clogging, improves vacuum pump evacuation efficiency, ensures the conveying efficiency and stability of the feeder, and avoids production interruptions caused by clogging.
Smart Images
Figure CN224312763U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of feeding machine devices, and in particular to a vacuum feeding machine device for solid whitening agents. Background Technology
[0002] Solid whitening agents typically have small particle sizes and high specific surface areas, making them susceptible to dust and airborne contamination during transportation. Furthermore, some solid whitening agents may exhibit strong hygroscopic or electrostatic properties, further exacerbating the risk of dust pollution. Vacuum feeders, transporting materials in enclosed pipes, effectively reduce dust and pollution, contributing to a cleaner working environment and employee health. They also reduce the risk of material contamination. While other feeders (chain bucket feeders or belt feeders) can reduce pollution by adding dust removal equipment when handling powder materials, they are still less environmentally friendly than vacuum feeders.
[0003] In existing technologies, when existing vacuum feeders continuously transport materials for extended periods, a large amount of powder material gradually accumulates in their internal filter elements. Due to factors such as electrostatic adsorption, inter-particle friction, or environmental humidity, this powder material easily adheres tightly to the surface and pore structure of the filter element, forming a difficult-to-remove accumulation layer. As the accumulation thickness increases, the air permeability of the filter element decreases significantly, obstructing the airflow into the vacuum pump. This indirectly leads to blockage of the internal pipes and impeller of the vacuum pump, reducing its pumping performance and slowing down its pumping rate. Ultimately, this results in a significant reduction in the material transport rate of the feeder, severely impacting the continuity and production capacity stability of the production line. Therefore, it is necessary to develop an improved vacuum feeder device for solid whitening agents to solve the above problems. Utility Model Content
[0004] To overcome the problem that a large amount of powder material will adhere to the filter element during long-term feeding of existing vacuum feeders, indirectly clogging the vacuum pump, reducing the pumping efficiency, and causing slow feeding.
[0005] The technical solution of this utility model is as follows: a vacuum feeding device for solid whitening agent, including a frame, a feeding hopper and a discharge assembly. The feeding hopper is fixedly connected to the top of the frame. A powder hopper is set on the top of the feeding hopper. A vacuum chamber is set on the top of the powder hopper. A discharge assembly is set between the powder hopper and the feeding hopper to facilitate the discharge of whitening agent. A top cover is set on the top of the vacuum chamber. A filter is fixedly connected inside the vacuum chamber. A compressed air backflushing device for cleaning the filter is fixedly connected to the top cover. The compressed air backflushing device is electrically connected to the control box. A pneumatic hammer frame is fixedly connected to the powder hopper. A limit rod is slidably connected inside the pneumatic hammer frame. A hammer head for vibrating the outside of the powder hopper is fixedly connected to the right end of the limit rod. The hammer head is set inside the pneumatic hammer frame.
[0006] Preferably, two sets of filters are provided, which are symmetrically distributed inside the vacuum chamber.
[0007] Preferably, the outer frame of the pneumatic hammer has a matching groove at the corresponding position of the hammer head, and the hammer head is set in the groove of the outer frame of the pneumatic hammer.
[0008] Preferably, the pneumatic hammer has a connection port on its outer frame for easy connection to an external pneumatic device.
[0009] Preferably, a control box is fixedly connected to the top of the frame, and a Roots blower is fixedly connected to the top of the frame. The Roots blower is electrically connected to the control box. The Roots blower is fixedly connected to the air outlet at the top of the top cover via a connecting pipe. A suction port is fixedly connected to the powder hopper. A level controller for detecting the material level inside the discharge hopper is fixedly connected to the discharge hopper. The level controller is electrically connected to the control box. A return spring is fixedly connected between the hammer and the outer frame of the pneumatic hammer. A limit plate is fixedly connected to the left end of the limit rod.
[0010] Preferably, the unloading assembly includes an unloading frame, which is fixedly connected between the feeding hopper and the powder hopper. The unloading frame has a first through hole at the end near the powder hopper and a second through hole at the end near the feeding hopper. A motor is fixedly connected to the front end of the unloading frame, and an optical shaft is fixedly connected to the output end of the motor. The optical shaft is rotatably connected inside the unloading frame, and an unloading plate is fixedly connected to the optical shaft. The unloading plate is located inside the unloading frame, and a sealing ring for improving sealing is fixedly connected inside the unloading frame. The optical shaft rotates inside the sealing ring.
[0011] Preferably, there are six sets of unloading plates, which are symmetrically distributed on the optical axis.
[0012] The beneficial effects of this utility model are:
[0013] 1. Compared to existing vacuum feeders that require long-term material feeding, this system uses external air pressure to drive the hammers inside the pneumatic hammer frame to generate impact force, striking the powder hopper wall to clear any clumps or blockages of whitening agent. Then, a compressed air backflushing device uses compressed air pulses to backflush the filter, knocking off the powder adsorbed on the filter surface. This ensures normal material feeding, prevents blockage, improves feeding efficiency, and enhances the practicality of the device. It also avoids the problem of large amounts of powder adhering to the filter element, indirectly clogging the vacuum pump, reducing the vacuum pump's evacuation efficiency, and causing slow feeding.
[0014] 2. By rotating the discharge plate, the material inside the powder silo is sequentially fed into the discharge silo, and then transported from the inner cavity of the discharge silo to the receiving equipment, thereby improving the stability of the feeding process. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of one embodiment of the vacuum feeding device for solid whitening agents according to the present invention;
[0016] Figure 2 This is a schematic diagram of the vacuum chamber structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the filter structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the outer frame of this utility model;
[0019] Figure 5 This is a schematic diagram of the unloading assembly structure of this utility model;
[0020] Figure 6 This is a schematic diagram of the first through hole and the second through hole of this utility model.
[0021] Explanation of reference numerals in the attached drawings: 1. Frame; 21. Feed hopper; 22. Material level controller; 23. Powder hopper; 24. Vacuum chamber; 25. Suction port; 26. Top cover; 27. Filter; 28. Compressed air backflushing device; 29. Pneumatic hammer outer frame; 210. Limit rod; 211. Limit plate; 212. Hammer head; 213. Return spring; 214. Control box; 215. Roots blower; 31. Discharge frame; 32. Motor; 33. Optical shaft; 34. Sealing ring; 35. Discharge plate; 36. First through hole; 37. Second through hole. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] Please see Figure 1 - Figure 6This utility model provides an embodiment: a vacuum feeding device for solid whitening agents, including a frame 1, a feeding hopper 21, and a discharge assembly. The feeding hopper 21 is fixedly connected to the top of the frame 1. A powder hopper 23 is disposed on the top of the feeding hopper 21. A vacuum chamber 24 is disposed on the top of the powder hopper 23. A discharge assembly for facilitating the discharge of whitening agents is disposed between the powder hopper 23 and the feeding hopper 21. A top cover 26 is disposed on the top of the vacuum chamber 24. A filter 27 is fixedly connected inside the vacuum chamber 24. A compressed air backflushing device 28 for cleaning the filter 27 is fixedly connected to the top cover 26. The compressed air backflushing device 28 is electrically connected to a control box 214. A pneumatic hammer frame 29 is fixedly connected to the powder hopper 23. A limit rod 210 is slidably connected inside the pneumatic hammer frame 29. The right end of the positioning rod 210 is fixedly connected to a hammer 212 that vibrates the outside of the powder silo 23. The hammer 212 is located inside the outer frame 29 of the pneumatic hammer. The hammer 212 inside the outer frame 29 of the pneumatic hammer generates a certain impact force to strike the wall of the powder silo 23 by external air pressure, so as to clear the clumps or blockages of whitening agent. Then, the compressed air back-blowing device 28 uses compressed air pulses to back-blow the filter 27, knocking off the powder adsorbed on the surface of the filter 27, ensuring that the material can be sucked up normally, preventing blockage, improving the feeding efficiency, and improving the practicality of the device. The unloading assembly rotates the unloading plate 35 to allow the material inside the powder silo 23 to enter the inside of the discharge silo 21 in sequence, so that it is transported from the inner cavity of the discharge silo 21 to the receiving equipment, thereby improving the stability of the feeding.
[0024] Please see Figure 1 - Figure 4In this embodiment, two sets of filters 27 are provided, symmetrically distributed inside the vacuum chamber 24, to facilitate the removal of powder from the surfaces of the filters 27 on both sides, ensuring normal material suction and improving the practicality of the device. The pneumatic hammer frame 29 has corresponding slots for the hammer heads 212. The hammer heads 212 are located within these slots. By connecting the pneumatic hammer frame 29 to external equipment, external air pressure drives the hammer heads 212 inside the frame to generate impact force, striking the wall of the powder hopper 23 to clear any clumps or blockages of whitening agent. A return spring 213 resets the hammer heads 212, allowing for repeated striking and reducing blockage in the powder hopper 23, thus improving the device's practicality. The pneumatic hammer frame 29 has a connection port for easy connection to external equipment, further enhancing the device's practicality. A control box 214 is fixedly connected to the top of the frame 1. A Roots blower 215 is fixedly connected to the top of the frame 1. The Roots blower 215 is electrically connected to the control box 214. The Roots blower 215 is fixedly connected to the air outlet at the top of the top cover 26 via a connecting pipe. A suction port 25 is fixedly connected to the powder hopper 23. A level controller 22 for detecting the material level inside the discharge hopper 21 is fixedly connected to the discharge hopper 21. The level controller 22 is electrically connected to the control box 214. A return spring 213 is fixedly connected between the hammer head 212 and the outer frame 29 of the pneumatic hammer. The left end of the limiting rod 210 is fixedly connected to the limiting plate 211. The hammer head 212 inside the outer frame 29 of the pneumatic hammer is driven by external air pressure to generate a certain impact force to strike the wall of the powder hopper 23, so as to clear the clumps or blockages of whitening agent. Then, the compressed air back-blowing device 28 uses compressed air pulses to back-blow the filter 27, knocking off the powder adsorbed on the surface of the filter 27, ensuring that the material can be sucked normally, preventing blockage, improving the feeding efficiency, and improving the practicality of the device.
[0025] Please see Figure 5 - Figure 6In this embodiment, the unloading assembly includes an unloading frame 31, which is fixedly connected between the feeding hopper 21 and the powder hopper 23. A first through hole 36 is provided at one end of the unloading frame 31 near the powder hopper 23, and a second through hole 37 is provided at the other end of the unloading frame 31 near the feeding hopper 21. A motor 32 is fixedly connected to the front end of the unloading frame 31, and an optical shaft 33 is fixedly connected to the output end of the motor 32. The optical shaft 33 is rotatably connected inside the unloading frame 31, and an unloading plate 35 is fixedly connected to the optical shaft 33. The unloading plate 35 is disposed inside the unloading frame 31, and a sealing enhancement mechanism is fixedly connected inside the unloading frame 31. The sealing ring 34 and the optical shaft 33 rotate inside the sealing ring 34. The unloading assembly rotates the unloading plate 35 to allow the material inside the powder hopper 23 to enter the material discharge hopper 21 in sequence, so that it is transported from the inner cavity of the material discharge hopper 21 to the receiving equipment, thereby improving the stability of the feeding. There are six sets of unloading plates 35, which are symmetrically distributed on the optical shaft 33. Each of the six sets of unloading plates 35 is fixedly connected with a sealing gasket. The sealing gasket contacts the inner wall of the unloading frame 31, so that by adjusting the position of the six sets of unloading plates 35, the powder hopper 23 can be in a vacuum state, thereby improving the practicality of the device.
[0026] During operation, the Roots blower 215 generates the necessary vacuum environment. When the two discharge plates 35 seal the discharge frame 31, a vacuum is maintained in the powder silo 23 and the material pipe. Under vacuum, the solid whitening agent is drawn into the powder silo 23 from the suction position through the conveying pipe and suction port 25. In the powder silo 23, gas-material separation occurs. The separated material is then transferred to the receiving equipment via the discharge plate 35 driven by the starting motor 32. When the material clumps or becomes blocked in the powder silo 23, the pneumatic hammer frame 29 is connected to external equipment, allowing it to pass through external... Air pressure drives the hammer head 212 inside the pneumatic hammer frame 29 to generate a certain impact force to strike the wall of the powder hopper 23, thereby clearing the clumps or blockages of whitening agent. The return spring 213 resets the hammer head 212, making it easy to repeatedly strike. The compressed air back-blowing device 28 uses compressed air pulses to back-blow the filter 27, knocking off the powder adsorbed on the surface of the filter 27, ensuring that the material suction can proceed normally. When the material level controller 22 detects that the material has reached the preset full state, the pneumatic three-way valve will automatically switch the air path to stop the material suction operation. When the material level drops to the preset minimum limit, the equipment will automatically resume the material suction function.
[0027] Through the above steps, the external air pressure drives the hammer head 212 inside the pneumatic hammer frame 29 to generate a certain impact force to strike the wall of the powder hopper 23, thereby clearing the clumps or blockages of whitening agent. Then, the compressed air back-blowing device 28 uses compressed air pulses to back-blow the filter 27, knocking off the powder adsorbed on the surface of the filter 27, ensuring that the material suction can proceed normally, preventing blockage, improving the feeding efficiency, and enhancing the practicality of the device. This solves the problem that a large amount of powder material will adhere to the filter element, indirectly clogging the vacuum pump, reducing the vacuum pump's evacuation efficiency, and causing slow feeding.
Claims
1. A vacuum feeding device for solid whitening agents, comprising a frame (1), characterized in that: It also includes a feeding hopper (21) and a discharge assembly. The feeding hopper (21) is fixedly connected to the top of the frame (1). A powder hopper (23) is provided on the top of the feeding hopper (21). A vacuum chamber (24) is provided on the top of the powder hopper (23). A discharge assembly is provided between the powder hopper (23) and the feeding hopper (21) to facilitate the discharge of the whitening agent. A top cover (26) is provided on the top of the vacuum chamber (24). A filter (27) is fixedly connected inside the vacuum chamber (24). The top cover (26) is fixedly... A compressed air backflushing device (28) for cleaning the filter (27) is fixedly connected. The compressed air backflushing device (28) is electrically connected to the control box (214). A pneumatic hammer outer frame (29) is fixedly connected to the powder silo (23). A limit rod (210) is slidably connected inside the pneumatic hammer outer frame (29). A hammer head (212) for vibrating the outside of the powder silo (23) is fixedly connected to the right end of the limit rod (210). The hammer head (212) is located inside the pneumatic hammer outer frame (29).
2. The vacuum feeding device for solid whitening agents according to claim 1, characterized in that: Two sets of filters (27) are provided, and the two sets of filters (27) are symmetrically distributed inside the vacuum chamber (24).
3. The vacuum feeding device for solid whitening agents according to claim 1, characterized in that: The outer frame (29) of the pneumatic hammer has a matching groove at the corresponding position of the hammer head (212), and the hammer head (212) is set in the groove of the outer frame (29) of the pneumatic hammer.
4. The vacuum feeding device for solid whitening agents according to claim 1, characterized in that: The outer frame (29) of the pneumatic hammer is provided with a connection port for easy connection with an external pneumatic device.
5. The vacuum feeding device for solid whitening agent according to claim 1, characterized in that: A control box (214) is fixedly connected to the top of the frame (1), a Roots blower (215) is fixedly connected to the top of the frame (1), the Roots blower (215) is electrically connected to the control box (214), the Roots blower (215) is fixedly connected to the air outlet at the top of the top cover (26) through a connecting pipe, a suction port (25) is fixedly connected to the powder silo (23), a material level controller (22) for detecting the material level inside the material silo (21) is fixedly connected to the discharge silo (21), the material level controller (22) is electrically connected to the control box (214), a return spring (213) is fixedly connected between the hammer head (212) and the outer frame (29) of the pneumatic hammer, and a limit plate (211) is fixedly connected to the left end of the limit rod (210).
6. The vacuum feeding device for solid whitening agent according to claim 1, characterized in that: The unloading assembly includes an unloading frame (31), which is fixedly connected between the feeding hopper (21) and the powder hopper (23). A first through hole (36) is provided at one end of the unloading frame (31) near the powder hopper (23), and a second through hole (37) is provided at one end of the unloading frame (31) near the feeding hopper (21). A motor (32) is fixedly connected to the front end of the unloading frame (31), and an optical shaft (33) is fixedly connected to the output end of the motor (32). The optical shaft (33) is rotatably connected inside the unloading frame (31). An unloading plate (35) is fixedly connected to the optical shaft (33), and the unloading plate (35) is located inside the unloading frame (31). A sealing ring (34) for improving sealing is fixedly connected inside the unloading frame (31), and the optical shaft (33) rotates inside the sealing ring (34).
7. The vacuum feeding device for solid whitening agents according to claim 6, characterized in that: There are six sets of unloading plates (35), which are symmetrically distributed on the optical axis (33).