Material level control device for powder tank

Abstract

The utility model belongs to the technical field of material level control, and particularly relates to a material level control device for a powder tank, which can open an access door of a powder tank body and rotate a sleeving frame along a threaded surface of a driving shaft so as to control the height of a bottom material level alarm. A stepping motor at the top is started through a control end, a motor shaft of the stepping motor drives a driving shaft to rotate, the driving shaft drives a sleeving frame and a detection plate at the bottom to rotate, when the powder stacking height exceeds a material level alarm, the material level alarm sends a signal to a PLC control end, and the PLC control end sends a command to control a feeding valve of a feeding pipe to be closed; the material level control effect of the device is further achieved; due to the fact that the annular disc is fixed in the powder tank body, the annular rack on the inner side is meshed with the outer teeth of the planet wheels, under gear transmission, the three sets of planet wheels can drive the limiting frame to rotate along the middle of the annular disc, then the electric vibration rods on the outer sides of the planet wheels are driven to rotate, caked powder is scattered, and the powder is prevented from blocking a discharging port.

Description

Technical Field

[0001] The utility model belongs to the technical field of material level control, and in particular relates to a material level control device for a powder tank. Background Art

[0002] The material level control device for powder tanks generally refers to a device installed inside the powder tank to control the position of liquid or powdered materials in the powder tank. At present, the control of the powder level in the powder tank is mostly done by electronic level meters, such as radar, ultrasonic, tuning fork, etc. This type of level meter has a relatively stable control over liquids, but has poor control over some powders, mainly because the powder environment is poor and it is easy to adhere to the electronic level meter, resulting in inaccurate or malfunctioning material level control.

[0003] After searching, the announcement number: CN219858750U announced a powder tank level control device. In the utility model, the position of the material in the tank body can be sensed by the first contact switch, the second contact switch, and the photoelectric sensor. When the photoelectric sensor senses the material, the feeding speed is controlled by the feeding control mechanism, and the baffle is moved downward to slow down the feeding speed and prevent large amounts of feeding. By arranging a silo outside the tank body and a sensor inside the silo, it is possible to avoid interference of the powder on the control device causing sensing failure. However, the powder in the tank body is prone to clumping and arching when stored for a long time or when it is damp. This material tank cannot perform auxiliary crushing while controlling the material, which leads to blockage of the tank body discharge port.

[0004] Therefore, a powder tank material level control device is designed to solve the above problems. Utility Model Content

[0005] To solve the problems raised in the above background technology. The utility model provides a powder tank material level control device. When the device is in use, powder can be put into the inside of the powder tank body from the feed pipe. The staff can freely adjust the storage amount of the powder according to the classification of the powder. During operation, the inspection door of the powder tank body can be opened, and the sleeve frame can be rotated along the threaded surface of the drive shaft. The sleeve frame is completed by the built-in threaded hole to complete the lifting and adjustment, so as to control the height of the bottom material level alarm; when storing materials, the stepper motor at the top is started through the control end, and its motor shaft drives the drive shaft to rotate, and the drive shaft drives the sleeve frame and the detection plate at the bottom to rotate. When the powder accumulation height exceeds the material level alarm, the material level alarm sends a signal to the PLC control end, and the PLC control end sends a command to control the feed valve of the feed pipe to close, thereby achieving the material level control effect of the device.

[0006] To prevent the powder inside the powder tank body from clumping, when the stepper motor is in operation, the drive shaft will drive the main gear on the top to rotate, and the main gear will mesh with the planetary gear, and the inner side of the planetary gear will be rotatably connected to the limit frame. Since the annular disk is fixed inside the powder tank body and the annular rack on the inside meshes with the outer teeth of the planetary gear, under the gear transmission, the three sets of planetary gears can drive the limit frame to rotate along the middle of the annular disk, and then drive the electric vibrator rods on their outer sides to rotate, thereby breaking up the agglomerated powder and preventing the powder from clogging the discharge port; and the nylon shock-absorbing disk buffers the tension, so that the connecting surface of the electric vibrator rod on the outer side of the planetary gear plays a good buffering pressure, reduces the wear of the gear surface of the planetary gear, and improves the service life of the device.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a powder tank level control device, comprising a powder tank body, an anti-caking material level control mechanism is arranged inside the powder tank body, the anti-caking material level control mechanism comprises a stepper motor, an annular disk, a drive shaft, a socket frame, a detection plate and a material level alarm, the stepper motor is threadedly connected to the middle of the top end of the powder tank body, the drive shaft passes through the top inner wall of the powder tank body and is fixedly connected to the motor shaft of the stepper motor through a coupling, the annular disk is fixedly connected to the inside of the powder tank body, the socket frame is threadedly sleeved on the outside of the drive shaft, the detection plate is fixedly connected to one side of the socket frame, the material level alarm is threadedly connected to the surface of the detection plate, and a vibration component is also arranged on the outside of the drive shaft.

[0008] As a preferred embodiment of a powder tank level control device of the utility model, the vibration assembly includes a planetary gear, a nylon shock-absorbing disk and an electric vibration rod, the outer side of the planetary gear is plugged into one side of the nylon shock-absorbing disk, and the electric vibration rod is plugged into the inner side of the middle part of the nylon shock-absorbing disk.

[0009] As a preferred embodiment of the powder tank material level control device of the utility model, a main gear is fixedly connected to a side of the drive shaft close to the annular disk, and the outer teeth of the main gear are meshed with the outer teeth of the planetary gear.

[0010] As a preferred embodiment of the powder tank material level control device of the utility model, an annular rack matched with the outer teeth of the planetary gear is further arranged inside the annular disk.

[0011] As a preferred embodiment of the powder tank material level control device of the utility model, the inner side of the annular disk is also rotatably connected to a limiting frame, and the outer side of the limiting frame is rotatably connected to the inner side of the planetary wheel.

[0012] As a preferred embodiment of the powder tank material level control device of the utility model, the connection between the sleeve frame and the drive shaft is further provided with mutually matching screw threads and threaded holes.

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

[0014] 1. In the utility model, the inspection door of the powder tank body can be opened, and the sleeve frame can be rotated along the threaded surface of the driving shaft. The sleeve frame can be adjusted up and down through the built-in threaded holes to control the height of the bottom material level alarm. When storing materials, the stepper motor on the top is started through the control end, and its motor shaft drives the driving shaft to rotate, and the driving shaft drives the sleeve frame and the detection plate at the bottom to rotate. When the powder accumulation height exceeds the material level alarm, the material level alarm sends a signal to the PLC control end, and the PLC control end sends a command to control the feed valve of the feed pipe to close, thereby achieving the material level control effect of the device.

[0015] 2. In the utility model, when the stepper motor is in operation, the driving shaft drives the main gear on the top to rotate, the main gear meshes with the planetary gear, and the inner side of the planetary gear is rotatably connected with the limit frame. Since the annular disk is fixed inside the powder tank body, and the inner annular rack meshes with the outer teeth of the planetary gear, under the gear transmission, the three sets of planetary gears can drive the limit frame to rotate along the middle of the annular disk, and then drive the electric vibrating rods on the outer side of each to rotate, thereby breaking up the agglomerated powder and preventing the powder from clogging the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a cross-sectional view of the interior of the medium powder tank body of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the inner side of the annular disk in the utility model;

[0020] Figure 4 This is a disassembly diagram of the limit frame and the planetary gear in the utility model;

[0021] Figure 5 This is a disassembled diagram of the drive shaft and the sleeve frame in the utility model;

[0022] In the figure:

[0023] 1. Powder tank body; 2. Anti-caking material level control mechanism; 21. Stepper motor; 22. Annular disk; 23. Drive shaft; 24. Socket frame; 25. Detection plate; 26. Material level alarm; 3. Vibration assembly; 31. Planetary gear; 32. Nylon shock-absorbing disk; 33. Electric vibrator; 4. Main gear; 5. Annular rack; 6. Limiting frame; 7. Screw thread; 8. Threaded hole; 9. Feed pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 As shown:

[0026] A powder tank material level control device is disclosed in CN219858750U. The position of the material in the tank is sensed by a first contact switch, a second contact switch, and a photoelectric sensor. When the photoelectric sensor senses the material, the feeding speed is controlled by a feeding control mechanism, so that the baffle moves downward to slow down the feeding speed and prevent large amounts of feeding. By arranging a silo outside the tank and arranging a sensor inside the silo, it is possible to avoid interference of the powder with the control device resulting in sensing failure. However, the powder in the tank is prone to agglomeration and arching when stored for a long time or when it is damp. This material tank cannot perform auxiliary crushing while controlling the material, which leads to blockage of the tank discharge port. On this basis, an anti-caking material level control mechanism 2 is added.

[0027] like Figure 1 , Figure 2 and Figure 5 As shown:

[0028] In an optional embodiment: the anti-caking material level control mechanism 2 includes a stepper motor 21, an annular disk 22, a drive shaft 23, a socket frame 24, a detection plate 25 and a material level alarm 26, the stepper motor 21 is threadedly connected to the middle of the top of the powder tank body 1, the drive shaft 23 passes through the top inner wall of the powder tank body 1 and is fixedly connected to the motor shaft of the stepper motor 21 through a coupling, the annular disk 22 is fixedly connected to the inside of the powder tank body 1, the socket frame 24 is threadedly socketed on the outside of the drive shaft 23, the detection plate 25 is fixedly connected to one side of the socket frame 24, the material level alarm 26 is threadedly connected to the surface of the detection plate 25, and the connection between the socket frame 24 and the drive shaft 23 is also provided with mutually matching screw threads 7 and threaded holes 8.

[0029] In this embodiment: powder can be put into the inside of the powder tank body 1 from the feed pipe 9, and the staff can freely adjust the storage amount of the powder according to the classification of the powder. During operation, the inspection door of the powder tank body 1 can be opened, and the sleeve frame 24 can be rotated along the threaded surface 7 of the drive shaft 23. The sleeve frame 24 completes the lifting and lowering adjustment through the built-in threaded hole 8, thereby controlling the height of the bottom material level alarm 26; when storing materials, the top stepper motor 21 is started through the control end, and its motor shaft drives the drive shaft 23 to rotate, and the drive shaft 23 drives the bottom sleeve frame 24 and the detection plate 25 to rotate. When the powder accumulation height exceeds the material level alarm 26, the material level alarm 26 sends a signal to the PLC control end, and the PLC control end sends a command to control the feed valve of the feed pipe to close, thereby achieving the material level control effect of the present device.

[0030] More specifically:

[0031] like Figure 2 , Figure 3 and Figure 4 As shown:

[0032] In an optional embodiment: the vibration component 3 includes a planetary gear 31, a nylon shock-absorbing disk 32 and an electric vibration rod 33. The outer side of the planetary gear 31 is plugged into one side of the nylon shock-absorbing disk 32, and the electric vibration rod 33 is plugged into the inner side of the middle part of the nylon shock-absorbing disk 32. The side of the drive shaft 23 close to the annular disk 22 is also fixedly connected to a main gear 4. The outer teeth of the main gear 4 are meshed with the outer teeth of the planetary gear 31. The interior of the annular disk 22 is also provided with an annular rack 5 that is adapted to the outer teeth of the planetary gear 31. The inner side of the annular disk 22 is also rotatably connected to a limiting frame 6, and the outer side of the limiting frame 6 is rotatably connected to the inner side of the planetary gear 31.

[0033] In this embodiment: to avoid the internal powder of the powder tank body 1 from agglomerating, when the stepper motor 21 is in operation, the driving shaft 23 will drive the main gear 4 on the top to rotate, and the main gear 4 will mesh with the planetary gear 31, and the inner side of the planetary gear 31 will be rotatably connected with the limiting frame 6. Since the annular disk 22 is fixed inside the powder tank body 1, and the inner annular rack 5 is meshed with the outer teeth of the planetary gear 31, under the gear transmission, the three sets of planetary gears 31 can drive the limiting frame 6 to rotate along the middle of the annular disk 22, and then drive the electric vibrating rods 33 on the outer side of each to rotate, so as to break up the agglomerated powder and prevent the powder from clogging the discharge port; and the nylon shock-absorbing disk 32, through the buffering tension, makes the connecting surface of the electric vibrating rod 33 on the outer side of the planetary gear 31 play a good buffering pressure, reduce the gear surface wear of the planetary gear 31, and improve the service life of the device.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A powder tank material level control device, comprising a powder tank body (1), wherein an anti-caking material level control mechanism (2) is arranged inside the powder tank body (1), characterized in that: The anti-caking material level control mechanism (2) comprises a stepper motor (21), an annular disk (22), a drive shaft (23), a sleeve frame (24), a detection plate (25) and a material level alarm (26); the stepper motor (21) is threadedly connected to the middle of the top end of the powder tank body (1); the drive shaft (23) passes through the top inner wall of the powder tank body (1) and is fixedly connected to the motor shaft of the stepper motor (21) via a coupling; the annular disk (22) is fixedly connected to the inside of the powder tank body (1); the sleeve frame (24) is threadedly sleeved on the outside of the drive shaft (23); the detection plate (25) is fixedly connected to one side of the sleeve frame (24); the material level alarm (26) is threadedly connected to the surface of the detection plate (25); and a vibration component (3) is also provided on the outside of the drive shaft (23).

2. The powder tank level control device according to claim 1, characterized in that: The vibration assembly (3) comprises a planetary wheel (31), a nylon damping disc (32) and an electric vibration rod (33), wherein the outer side of the planetary wheel (31) is plugged into one side of the nylon damping disc (32), and the electric vibration rod (33) is plugged into the inner side of the middle part of the nylon damping disc (32).

3. The powder tank level control device according to claim 2, characterized in that: A main gear (4) is also fixedly connected to one side of the drive shaft (23) close to the annular disk (22), and the outer teeth of the main gear (4) are meshed with the outer teeth of the planetary gear (31).

4. The powder tank material level control device according to claim 3 is characterized in that: An annular rack (5) adapted to the outer teeth of the planetary gear (31) is also arranged inside the annular disk (22).

5. The powder tank level control device according to claim 4, characterized in that: The inner side of the annular disk (22) is also rotatably connected to a limiting frame (6), and the outer side of the limiting frame (6) is rotatably connected to the inner side of the planetary gear (31).

6. The powder tank material level control device according to claim 1, characterized in that: The connection between the sleeve frame (24) and the drive shaft (23) is also provided with mutually matching threaded teeth (7) and threaded holes (8).

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