Precise powder valve device

Abstract

The utility model relates to a powder precise valve device which comprises an installation main plate, a powder bin and a powder feeding hopper, the powder bin is fixedly arranged on one side of the installation main plate, and the powder feeding hopper is communicated with the powder bin; a powder throwing rotating shaft is arranged in the powder bin, an upper wear-resisting ring is arranged at the bottom of the powder bin, the bottom of the powder throwing rotating shaft penetrates through the upper wear-resisting ring and then is fixedly provided with a lower blocking wafer, and a gap between the upper wear-resisting ring and the lower blocking wafer forms a powder outlet; a first driving mechanism used for driving the powder throwing rotating shaft to rotate is arranged on one side of the top of the mounting main plate, and a second driving mechanism used for driving the first driving mechanism to move up and down along the mounting main plate so as to drive the lower blocking wafer at the bottom of the powder throwing rotating shaft to move up and down is arranged on the other side of the top of the mounting main plate. And the second driving mechanism is used for adjusting the size of the powder outlet. The powder discharging precision and the powder discharging working efficiency can be improved, and material blocking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of powder material processing equipment, in particular to a powder material precision valve device. Background Art

[0002] At present, in mineral powder processing equipment, a batching valve is usually used, which is not compatible with powder outputs of different gram weights.

[0003] The powder valve in the existing mineral powder processing equipment adjusts the powder output by presetting a gap and adjusting the size of the gap.

[0004] For heavy powder, the powder output precision is low, and for light powder, when the powder output precision is high, the powder output speed is slow and the work efficiency is low.

[0005] The powder falls naturally, and it is difficult to pass through the gap, so it is impossible to achieve ultra-precision powder discharge. In addition, when the weight is small, the powder will not be discharged, and it cannot pass through the gap, which is easy to get stuck.

[0006] In addition, the powder processing device in the prior art uses a hard stirring blade, which is easy to get stuck and block. Utility Model Content

[0007] The main purpose of the utility model is to provide a powder material precision valve device, aiming to improve the powder discharging accuracy and powder discharging work efficiency and avoid material jamming.

[0008] To achieve the above-mentioned purpose, the utility model proposes a powder material precision valve device, comprising: a mounting main board, a powder material bin and a powder inlet hopper, wherein the powder material bin is fixedly arranged on one side of the mounting main board, and the powder inlet hopper is communicated with the powder material bin; a powder throwing shaft is arranged in the powder material bin, an upper wear-resistant ring is arranged at the bottom of the powder material bin, a lower stop disc is fixedly arranged at the bottom of the powder throwing shaft after passing through the upper wear-resistant ring, and the gap between the upper wear-resistant ring and the lower stop disc constitutes a powder outlet;

[0009] A first driving mechanism for driving the powder throwing shaft to rotate is arranged on one side of the top of the mounting mainboard, and a second driving mechanism for driving the first driving mechanism to move up and down along the mounting mainboard is arranged on the other side of the top of the mounting mainboard, so as to drive the lower stop disc at the bottom of the powder throwing shaft to move up and down, thereby adjusting the size of the powder outlet.

[0010] A further technical solution of the utility model is that the first driving mechanism includes a powder throwing speed regulating motor, a bearing limiting frame and a slider, the powder throwing speed regulating motor is fixedly arranged on the bearing limiting frame, the bearing limiting frame is slidably connected to the mounting main board through the slider, the bearing limiting frame is connected to the output end of the second driving mechanism, and a coupling is provided at the output end of the powder throwing speed regulating motor, and the coupling is detachably connected to the powder throwing shaft through a hexagonal male and female connector.

[0011] A further technical solution of the utility model is that the second driving mechanism includes a valve opening speed regulating motor, a bearing and an eccentric shaft, the output end of the valve opening speed regulating motor is connected to the input end of the eccentric shaft, the output end of the eccentric shaft is provided with the bearing, and the bearing is provided in the bearing limiting frame.

[0012] A further technical solution of the utility model is that the valve opening speed regulating motor is provided with an origin sensor and an origin sensor baffle.

[0013] A further technical solution of the utility model is that the powder precision valve device also includes a powder weighing module arranged below the lower baffle disc, and a control system connected to the powder weighing module, the powder throwing speed regulating motor, and the valve opening speed regulating motor; the powder weighing module includes a weighing body and a weighing container arranged on the weighing body.

[0014] A further technical solution of the utility model is that a valve clamping plate is arranged on the mounting main board, the powder bin is arranged on the valve clamping plate, and a vibration motor is also arranged on the upper wear-resistant ring at the bottom of the powder bin.

[0015] A further technical solution of the utility model is that a powder bin sensor is arranged on the mounting main board.

[0016] A further technical solution of the utility model is that a stirring spring is arranged at the bottom of the powder throwing shaft.

[0017] A further technical solution of the utility model is that a thrust bearing is arranged on the top of the powder throwing shaft, and a powder throwing shaft return spring is arranged in the thrust bearing.

[0018] The beneficial effects of the powder material precision valve device of the utility model are:

[0019] The utility model, through the above technical scheme, includes: an installation mainboard, a powder bin and a powder inlet hopper, the powder bin is fixedly arranged on one side of the installation mainboard, and the powder inlet hopper is communicated with the powder bin; a powder throwing shaft is arranged in the powder bin, an upper wear-resistant ring is arranged at the bottom of the powder bin, and a lower stop disc is fixedly arranged at the bottom of the powder throwing shaft after passing through the upper wear-resistant ring, and the gap between the upper wear-resistant ring and the lower stop disc constitutes a powder outlet; a first driving mechanism for driving the powder throwing shaft to rotate is arranged on one side of the top of the installation mainboard, and a second driving mechanism for driving the first driving mechanism to move up and down along the installation mainboard is arranged on the other side of the top of the installation mainboard to drive the lower stop disc at the bottom of the powder throwing shaft to move up and down, thereby adjusting the size of the powder outlet, which can improve the powder outlet accuracy and powder outlet work efficiency and avoid material jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the powder material precision valve device of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of a preferred embodiment of the powder material precision valve device of the utility model from another angle;

[0022] Figure 3 is a structural schematic diagram of a second driving mechanism;

[0023] Figure 4 is a schematic structural diagram of the second driving mechanism from another angle;

[0024] Figure 5 is a structural schematic diagram of a first driving mechanism;

[0025] Figure 6 It is a structural schematic diagram of the powder-shaking shaft;

[0026] Figure 7 It is a schematic diagram of the structure of the upper wear-resistant ring;

[0027] Figure 8 It is a structural diagram of the powder silo;

[0028] Fig. 9 It is a schematic diagram of the structure of a powder silo with a vibration motor.

[0029] Description of Figure Numbers:

[0030] Install the main board 1; powder silo 2; powder inlet hopper 3; powder silo outlet 4; powder throwing shaft 5; upper wear-resistant ring 6; lower baffle disc 7; powder outlet 8; center support hole 9; powder throwing speed regulating motor 10; bearing limit frame 11; slider 12; coupling 13; hexagonal male and female connector male head 14; hexagonal male and female connector female head 15; slide rail 16; valve opening speed regulating motor 17; bearing 18; eccentric shaft 19; origin sensor 20; origin sensor baffle 21; valve clamp 22; vibration motor 23; powder silo sensor 24; stirring spring 25.

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0032] It should be understood that the specific embodiments described herein are only a part of the embodiments of the utility model and are not intended to limit the utility model. All other embodiments derived from the embodiments of the utility model without creative design are within the scope of protection of the utility model.

[0033] Please refer to Figures 1 to 9 The utility model provides a powder material precision valve device. The preferred embodiment of the powder material precision valve device of the utility model includes a mounting main board 1, a powder material bin 2 and a powder inlet hopper 3.

[0034] The powder bin 2 is fixedly arranged on one side of the mounting main board 1, and the powder inlet hopper 3 is connected to the powder bin 2. A powder bin opening 4 is provided on the top of the powder bin 2, and the powder in the powder inlet hopper 3 enters the powder bin 2 through the powder bin opening 4.

[0035] A powder-shaking shaft 5 is provided in the powder bin 2, an upper wear-resistant ring 6 is provided at the bottom of the powder bin 2, a lower baffle disc 7 is fixedly provided at the bottom of the powder-shaking shaft 5 after passing through the upper wear-resistant ring 6, a powder outlet 8 is constituted by a gap between the upper wear-resistant ring 6 and the lower baffle disc 7, and a valve-like function is played by the gap between the upper wear-resistant ring 6 and the lower baffle disc 7. The larger the gap between the upper wear-resistant ring 6 and the lower baffle disc 7, that is, the larger the powder outlet 8 is, the larger the valve opening is, and the smaller the gap between the upper wear-resistant ring 6 and the lower baffle disc 7, that is, the smaller the powder outlet 8 is, the smaller the valve opening is.

[0036] In this embodiment, a central support hole 9 is provided at the bottom of the upper wear-resistant retaining ring, and the bottom of the powder-spinning shaft 5 passes through the central support hole 9 and is connected to the lower retaining disc 7. The design of the central support hole 9 allows the powder-spinning shaft 5 to maintain a central position.

[0037] A first driving mechanism for driving the powder throwing shaft 5 to rotate is provided on one side of the top of the mounting mainboard 1, and a second driving mechanism for driving the first driving mechanism to move up and down along the mounting mainboard 1 is provided on the other side of the top of the mounting mainboard 1, so as to drive the lower stop disc 7 at the bottom of the powder throwing shaft 5 to move up and down, thereby adjusting the size of the powder outlet 8.

[0038] In this embodiment, the size of the powder outlet 8 is adjusted by the second driving mechanism, and the speed of the powder throwing shaft 5 is adjusted by the first driving mechanism. The two cooperate with each other. When discharging small gram weight powder, the gap between the upper wear-resistant ring 6 and the lower stop disc 7 forms the smallest valve of the powder outlet 8, and the powder throwing shaft 5 rotates slowly to squeeze out the powder; when discharging large gram weight powder, the gap between the upper wear-resistant ring 6 and the lower stop disc 7 forms the largest valve of the powder outlet 8, and the powder throwing shaft 5 rotates at a high speed to throw out the powder. When discharging ultra-precision powder, the powder throwing speed regulating motor 10 is connected to the powder throwing shaft 5 group to rotate forward and reverse at the speed of sonic waves, generating high-frequency oscillation, and the gap between the upper wear-resistant ring 6 and the lower stop disc 7 is ground into powder, and the powder falls into the weighing container to achieve ultra-precision powder discharging.

[0039] The first driving mechanism includes a powder-throwing speed-regulating motor 10, a bearing limiting frame 11 and a slider 12. The powder-throwing speed-regulating motor 10 is fixedly arranged on the bearing limiting frame 11. The bearing limiting frame 11 is slidably connected to the mounting main board 1 through the slider 12. The bearing limiting frame 11 is connected to the output end of the second driving mechanism. A coupling 13 is arranged at the output end of the powder-throwing speed-regulating motor 10.

[0040] The coupling 13 can prevent the motor shaft of the powder throwing speed regulating motor 10 and the powder throwing rotating shaft 5 from wearing out when the motor shaft is eccentric.

[0041] In this embodiment, the coupling 13 is detachably connected to the powder throwing shaft 5 via a hexagonal male and female connector.

[0042] In specific implementation, a hexagonal male and female connector male head 14 can be provided on the coupling 13, and a hexagonal male and female connector female head 15 can be provided on the powder throwing shaft 5, thereby realizing detachable connection and power transmission between the coupling 13 and the powder throwing shaft 5.

[0043] In this embodiment, the speed and amount of powder output can be determined by the rotation speed of the motor of the powder throwing shaft 5 and the size of the powder outlet 8.

[0044] In this embodiment, a slide rail 16 is provided on one side of the top of the mounting main board 1 in the vertical direction, and the slider 12 is slidably provided on the slide rail 16. The second driving mechanism can drive the first driving mechanism to move up and down as a whole, thereby driving the lower baffle disc 7 at the bottom of the powder throwing shaft 5 to move up and down, and adjusting the size of the powder outlet 8. When the second driving mechanism drives the lower baffle disc 7 to move upward, the valve of the powder outlet 8 formed by the gap between the upper wear-resistant ring 6 and the lower baffle disc 7 becomes smaller, and when the second driving mechanism drives the lower baffle disc 7 to move upward, the valve of the powder outlet 8 formed by the gap between the upper wear-resistant ring 6 and the lower baffle disc 7 becomes larger.

[0045] Furthermore, in this embodiment, the second driving mechanism includes a valve opening speed regulating motor 17, a bearing 18 and an eccentric shaft 19, the output end of the valve opening speed regulating motor 17 is connected to the input end of the eccentric shaft 19, the bearing 18 is arranged at the output end of the eccentric shaft 19, and the bearing 18 is arranged in the bearing limiting frame 11.

[0046] The eccentric shaft 19 is provided with the bearing 18, and can rotate from 0 to 180 degrees in cooperation with the valve opening speed regulating motor 17, corresponding to the maximum opening of the powder outlet 8 from closed. The size of the bearing limiting frame 11 is matched with the diameter movement of the bearing 18, and the bearing limiting frame 11 can be prevented from being worn by the action of the bearing 18.

[0047] The valve opening speed regulating motor 17 is provided with an origin sensor 20 and an origin sensor baffle 21 .

[0048] When the origin sensor 20 detects that the valve opening speed regulating motor 17 is reset, the powder outlet 8 is completely closed.

[0049] Furthermore, in this embodiment, the powder precision valve device also includes a powder weighing module (not shown in the figure) arranged below the lower baffle disc 7, and a control system connected to the powder weighing module, the powder throwing speed regulating motor 10, and the valve opening speed regulating motor 17; the powder weighing module includes a weighing body and a weighing container arranged on the weighing body.

[0050] The weighing container is used to collect and weigh powder. The weighing body is linked with the valve opening speed regulating motor 17 in real time, and the PID servo adjusts the size of the powder outlet 8 and the speed of the powder throwing speed regulating motor 10.

[0051] The weighing body is used as a feedback source to adjust the gap between the upper wear-resistant ring 6 and the lower baffle disc 7 to realize an electronic control software closed-loop control system.

[0052] In this embodiment, a valve clamping plate 22 is disposed on the mounting main board 1 , the powder bin 2 is disposed on the valve clamping plate 22 , and a vibration motor 23 is further disposed on the upper wear-resistant ring 6 at the bottom of the powder bin 2 .

[0053] The valve clamping plate 22 is detachably mounted on the mounting main board 1, which is convenient for replacement and later maintenance. The vibration of the vibration motor 23 can assist in making the powder material fall evenly, so that the powder material in the powder material bin 2 can be smoothly discharged from the powder outlet 8 to avoid material jam.

[0054] In this embodiment, a powder bin sensor 2424 is also provided on the mounting main board. When the powder bin sensor detects the presence of material, the control system starts to operate and controls the valve opening speed regulating motor 17 and the powder throwing speed regulating motor 10 to start working.

[0055] Furthermore, in this embodiment, a stirring spring 25 is provided at the bottom of the powder-swinging shaft 5. In this embodiment, the stirring spring 25 cooperates with the powder-swinging shaft 5 to prevent the powder from becoming hollow and from collapsing and falling. The stirring spring 25 is a spiral surface sweeping structure, which can increase the contact surface with the powder. The stirring spring 25 has a small diameter, small resistance, and is not stuck or blocked.

[0056] Furthermore, in this embodiment, a thrust bearing 18 is disposed on the top of the powder-throwing shaft 5 , and a return spring of the powder-throwing shaft 5 is disposed inside the thrust bearing 18 .

[0057] In this embodiment, the thrust bearing 18 can prevent the return spring and the powder bin 2 from wearing out.

[0058] The working principle and working process of the powder precision valve device of the utility model are as follows:

[0059] 1. The valve opening speed regulating motor 17 is reset to its origin, and the powder outlet 8 is closed.

[0060] 2. Powder enters the powder bin 2 from the powder inlet hopper 3, and the powder bin sensor 2424 detects the presence of material.

[0061] 3. Start the valve opening speed regulating motor 17 , and the eccentric shaft 19 drives the second driving mechanism to slide up and down on the slide rail 16 , thereby driving the powder throwing shaft 5 to adjust the opening size of the powder outlet 8 .

[0062] 4. The weighing container collects the weighed powder and controls it in two stages. The powder is spun at high speed with a large gram weight to quickly reach the set weight. Then, the opening size of the PID servo adjustment valve and the speed of the powder-spinning speed regulating motor 10 are switched to a small gram weight to rotate slowly to grind and produce powder. Finally, the weight is close to the set weight and the powder is produced.

[0063] For example, assuming that the powder target is 200 grams, 160 grams is set as the large weight in the first section, and the gap between the upper wear-resistant ring 6 and the lower block disc 7 is set to 5MM. The lower block disc 7 rotates at high speed, and the powder is thrown out of the lower block disc 7 and falls into the weighing container. When the weighing body detects that it is greater than or equal to 160 grams, it switches to the small weight PID servo to adjust the opening size of the powder outlet 8, and rotates at a low speed until 200 grams.

[0064] 5. The valve opening speed regulating motor 17 is reset to its origin, and the valve opening is closed.

[0065] The beneficial effects of the powder material precision valve device of the utility model are:

[0066] The utility model, through the above technical scheme, includes: an installation mainboard, a powder bin and a powder inlet hopper, the powder bin is fixedly arranged on one side of the installation mainboard, and the powder inlet hopper is communicated with the powder bin; a powder throwing shaft is arranged in the powder bin, an upper wear-resistant ring is arranged at the bottom of the powder bin, and a lower stop disc is fixedly arranged at the bottom of the powder throwing shaft after passing through the upper wear-resistant ring, and the gap between the upper wear-resistant ring and the lower stop disc constitutes a powder outlet; a first driving mechanism for driving the powder throwing shaft to rotate is arranged on one side of the top of the installation mainboard, and a second driving mechanism for driving the first driving mechanism to move up and down along the installation mainboard is arranged on the other side of the top of the installation mainboard to drive the lower stop disc at the bottom of the powder throwing shaft to move up and down, thereby adjusting the size of the powder outlet, which can improve the powder outlet accuracy and powder outlet work efficiency and avoid material jamming.

[0067] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A powder precision valve device, characterized in that: include: A main board, a powder bin and a powder inlet hopper are installed, wherein the powder bin is fixedly arranged on one side of the main board, and the powder inlet hopper is communicated with the powder bin; a powder throwing shaft is arranged in the powder bin, an upper wear-resistant ring is arranged at the bottom of the powder bin, a lower stop disc is fixedly arranged at the bottom of the powder throwing shaft after passing through the upper wear-resistant ring, and a gap between the upper wear-resistant ring and the lower stop disc constitutes a powder outlet; A first driving mechanism for driving the powder throwing shaft to rotate is arranged on one side of the top of the mounting mainboard, and a second driving mechanism for driving the first driving mechanism to move up and down along the mounting mainboard is arranged on the other side of the top of the mounting mainboard, so as to drive the lower stop disc at the bottom of the powder throwing shaft to move up and down, thereby adjusting the size of the powder outlet.

2. The powder material precision valve device according to claim 1, characterized in that: The first driving mechanism includes a powder-flinging speed-regulating motor, a bearing limiting frame and a slider. The powder-flinging speed-regulating motor is fixedly arranged on the bearing limiting frame. The bearing limiting frame is slidably connected to the mounting mainboard through the slider. The bearing limiting frame is connected to the output end of the second driving mechanism. The output end of the powder-flinging speed-regulating motor is provided with a coupling, and the coupling is detachably connected to the powder-flinging rotating shaft through a hexagonal male and female connector.

3. The powder material precision valve device according to claim 2, characterized in that: The second driving mechanism includes a valve opening speed regulating motor, a bearing and an eccentric shaft, wherein the output end of the valve opening speed regulating motor is connected to the input end of the eccentric shaft, the output end of the eccentric shaft is provided with the bearing, and the bearing is provided in the bearing limiting frame.

4. The powder material precision valve device according to claim 3, characterized in that: The valve opening speed regulating motor is provided with an origin sensor and an origin sensor baffle.

5. The powder material precision valve device according to claim 3, characterized in that: The powder precision valve device also includes a powder weighing module arranged below the lower baffle disc, and a control system connected to the powder weighing module, the powder throwing speed regulating motor, and the valve opening speed regulating motor; the powder weighing module includes a weighing body and a weighing container arranged on the weighing body.

6. The powder material precision valve device according to claim 1, characterized in that: The mounting main board is provided with a valve clamping plate, the powder bin is provided on the valve clamping plate, and a vibration motor is also provided on the upper wear-resistant ring at the bottom of the powder bin.

7. The powder material precision valve device according to claim 1, characterized in that: A powder bin sensor is arranged on the installation main board.

8. The powder material precision valve device according to claim 1, characterized in that: A stirring spring is arranged at the bottom of the powder-throwing rotating shaft.

9. The powder material precision valve device according to claim 1, characterized in that: A thrust bearing is arranged on the top of the powder throwing shaft, and a powder throwing shaft return spring is arranged in the thrust bearing.

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