Silicon material detector

Abstract

The utility model provides a silicon material detector and relates to the technical field of silicon material detection. The device comprises a material box, a detection device is arranged in the material box, the detection device comprises a three-way electromagnetic valve, an air particle counter and a pump machine which are sequentially communicated through a pipeline, the three-way electromagnetic valve is communicated with a detection pipe and a cleaning pipe, and a maintenance mechanism is arranged in the air particle counter. And the maintenance mechanism comprises a protective permeable membrane arranged on the inner wall of the air particle counter. The device can detect the dust content of the silicon material on line so as to convert the dust content into the turbidity of the silicon material, and is high in timeliness.

Description

Technical Field

[0001] This utility model relates to the field of silicon material testing technology, and specifically to a silicon material testing instrument. Background Technology

[0002] During the crushing process of silicon material, dust is generated and accumulates on the surface of the silicon material. After the silicon material is crushed, its turbidity, that is, the severity of dust adhering to the surface of the silicon material, is tested.

[0003] In existing technologies, turbidity testing of silicon materials requires sampling the silicon material and then performing testing according to common turbidity testing methods. The steps include: placing 70g of silicon material in a container, adding 140g of water, shaking, and then placing the container in a turbidity analyzer for testing. This method cannot be performed online, lacks timeliness, is inconvenient, complex, and time-consuming, and the silicon material used for testing is already contaminated with water, making it unsuitable for sale according to the corresponding grade. Utility Model Content

[0004] The purpose of this invention is to develop a silicon material detector that can detect the dust content of silicon material online and convert it into silicon material turbidity, and has high timeliness.

[0005] This utility model is achieved through the following technical solution:

[0006] A silicon material testing instrument, comprising:

[0007] Material bin;

[0008] The detection device is located inside the material bin;

[0009] The detection device includes a three-way solenoid valve, an air particle counter, and a pump connected in sequence via pipelines. The three-way solenoid valve is connected to a detection tube and a cleaning tube.

[0010] The air particle counter is equipped with a maintenance mechanism, which includes a protective membrane disposed on the inner wall of the air particle counter.

[0011] Optionally, the inlet end of the detection tube is located inside the material bin, while the inlet end of the cleaning tube is located outside the material bin.

[0012] Optionally, an air filter is provided inside the inlet end of the cleaning pipe, and a flow meter is connected between the air particle counter and the pump.

[0013] Optionally, the air particle counter has a cavity inside, and a laser emitting part and a laser receiving part are respectively provided in the opposite side walls of the cavity, and the protective membrane is provided on the outside of the laser emitting part and the laser receiving part.

[0014] Optionally, a second roller and a first roller are rotatably provided in the upper and lower sidewalls of the laser emitting part and the laser receiving part. The sidewalls of the first roller and the second roller near the cavity are provided with slots. The protective transparent film is wound on the first roller and the second roller, and the protective transparent film on the first roller and the second roller enters the outside of the laser emitting part or the laser receiving part through the slots.

[0015] Optionally, a sealing gasket is provided at both the top and bottom of the slot, and the protective membrane slides between the two sealing gaskets.

[0016] Optionally, a torsion spring or a clock spring is provided between the first roller and the air particle counter, and a motor is provided on the air particle counter on the side of the second roller to drive its rotation.

[0017] Optionally, vertically arranged guide blocks are provided on the side walls of both the laser emitting part and the laser receiving part. The top and bottom of the guide blocks extend to the slots on the sides of the second roller and the first roller, respectively. The inner side wall of the guide blocks is provided with guide grooves for the sliding of the protective membrane.

[0018] Optionally, sealing gaskets are provided on both sides of the guide groove, and the protective membrane slides between the two sealing gaskets.

[0019] The beneficial effects of this utility model are:

[0020] By detecting the dust content after the crushed silicon material falls, the dust content is converted to silicon material turbidity through experiments. That is, after measuring the dust content, the turbidity of the silicon material at that dust content is measured. By forming a pattern, it is no longer necessary to measure the silicon material turbidity. Only the silicon powder content needs to be measured to obtain the corresponding silicon material turbidity.

[0021] Online testing is highly efficient, eliminating the need for turbidity testing of silicon material, avoiding complex operating procedures, and preventing silicon material from being contaminated by water and affecting sales.

[0022] The maintenance mechanism can automatically replace the protective membranes on the outside of the laser emitter and receiver to maintain detection accuracy. By adjusting the air intake route through a three-way solenoid valve, clean air can be introduced into the air particle counter for purging, thereby improving the cleanliness inside the air particle counter, extending the replacement cycle of the protective membrane, and reducing the replacement frequency of the protective membrane. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural diagram of the present utility model;

[0025] Figure 2 This is a diagram of the internal structure of an air particle counter.

[0026] Reference numerals: 1. Three-way solenoid valve; 2. Air particle counter; 21. Cavity; 22. Laser emitting unit; 23. Laser receiving unit; 24. First roller; 25. Second roller; 26. Groove; 27. Guide block; 28. Protective membrane; 3. Flow meter; 4. Pump; 5. Cleaning pipe; 6. Detection pipe. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] This utility model discloses a silicon material detector, including a material box into which crushed silicon material falls. The material box is filled with dust. A container can be set at the bottom of the material box to transfer the silicon material or a conveyor belt can be set to transport it.

[0032] The material bin is equipped with, for example Figure 1The detection device shown includes a three-way solenoid valve 1, an air particle counter 2, a flow meter 3, and a pump 4 connected in sequence by pipelines. The detection device also includes a control box electrically connected to the three-way solenoid valve 1, the air particle counter 2, the flow meter 3, and the pump 4.

[0033] The three-way solenoid valve 1 is also connected to a detection tube 6 and a cleaning tube 5. The inlet end of the detection tube 6 is inside the material box, and the inlet end of the cleaning tube 5 is outside the material box. An air filter element is installed inside the inlet end of the cleaning tube 5.

[0034] like Figure 2 As shown, the air particle counter 2 has a cavity 21 through which airflow passes. A laser emitting part 22 and a laser receiving part 23 are respectively provided in the two opposite side walls of the cavity 21. A maintenance mechanism is provided on the outside of both the laser emitting part 22 and the laser receiving part 23.

[0035] The maintenance mechanism includes a first roller 24 located in the lower side wall of the laser emitting part 22 or the laser receiving part 23 and a second roller 25 located in the upper side wall. The side walls of the first roller 24 and the second roller 25 near the cavity 21 are provided with slots 26, and the top and bottom of the slots 26 are provided with a layer of elastic material sealing gaskets.

[0036] Vertically arranged strip-shaped guide blocks 27 are provided on the side walls of both sides of the laser emitting part 22 and the laser receiving part 23. The top and bottom of the guide blocks 27 extend to the slots 26 on the sides of the second roller 25 and the first roller 24, respectively. Guide grooves are provided on the inner side walls of the guide blocks 27, that is, on the side walls where the two guide blocks 27 are close to each other. Elastic sealing gaskets are also provided on the side walls of the guide grooves.

[0037] A torsion spring or clockwork spring is provided between the first roller 24 and the air particle counter 2, allowing the first roller 24 to rotate elastically. A motor (not shown) is provided on the air particle counter 2 on the side of the second roller 25 to drive its rotation. A protective membrane 28 is wound onto the first roller 24. The protective membrane 28 enters the cavity 21 through the slot 26 on the side of the first roller 24. Inside the cavity 21, the two edges of the protective membrane 28 slide into the guide grooves on the inner sidewalls of the two guide blocks 27. After passing through the guide grooves, the protective membrane 28 passes through the slot 26 on the side of the second roller 25 and is wound onto the second roller 25. The elastic rotation of the first roller 24 creates a winding force on the protective membrane 28, thus tensioning the protective membrane 28. Within the slot 26 and the guide grooves, the protective membrane 28 slides between the two sealing gaskets, achieving a seal.

[0038] After the air particle counter 2 has been running for a certain period of time, the protective membrane 28 on the outside of the laser emitting part 22 and the laser receiving part 23 is covered with a layer of dust. In order to maintain the detection accuracy of the air particle counter 2, the motor runs to make the second roller 25 rotate to roll up the protective membrane 28. The clean new protective membrane 28 is guided off the first roller 24 and gradually slides to the outside of the laser emitting part 22 and the laser receiving part 23.

[0039] When the detection device detects the contents of the material bin, the three-way solenoid valve 1 closes the cleaning pipe 5, the detection pipe 6 is connected to the air particle counter 2, the pump 4 is running, and the dust in the material bin enters the detection pipe 6 with the airflow, and passes through the air particle counter 2 and the flow meter 3 in sequence. The air particle counter 2 detects the dust content, and the detection data is output by the control box.

[0040] When the air particle counter 2 is not detecting dust, it can self-clean. At this time, the three-way solenoid valve 1 closes the detection tube 6 and connects the cleaning tube 5 to the air particle counter 2. Then the pump 4 runs, and clean air outside the material box is continuously drawn in by the cleaning tube 5. The air filter in the inlet of the cleaning tube 5 filters the air again. Clean air continuously enters the air particle counter 2 and blows away some of the dust attached to it, improving the measurement accuracy of the air particle counter 2.

[0041] This invention detects the dust content after crushed silicon material falls, and then converts the dust content with the turbidity of the silicon material through experiments. That is, after measuring the dust content, the turbidity of the silicon material at that dust content is measured. By establishing a pattern, it is no longer necessary to measure the turbidity of the silicon material. Only the silicon powder content needs to be measured to obtain the corresponding turbidity of the silicon material.

[0042] This invention enables online detection with high timeliness, eliminating the need for turbidity testing of silicon material, avoiding complicated operating procedures, and preventing the silicon material from being contaminated by water and affecting sales.

[0043] The maintenance mechanism of this utility model can automatically replace the protective membrane 28 on the outside of the laser emitting part 22 and the laser receiving part 23 to maintain detection accuracy. By adjusting the air intake route through the three-way solenoid valve 1, clean air can enter the air particle counter 2 to achieve purging, improve the cleanliness inside the air particle counter 2, extend the replacement cycle of the protective membrane 28, and reduce the replacement frequency of the protective membrane 28.

[0044] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A silicon material detector, characterized in that, include: Material bin; The detection device is located inside the material bin; The detection device includes a three-way solenoid valve, an air particle counter, and a pump connected in sequence via pipelines. The three-way solenoid valve is connected to a detection tube and a cleaning tube. The air particle counter is equipped with a maintenance mechanism, which includes a protective membrane disposed on the inner wall of the air particle counter.

2. The silicon material detector according to claim 1, characterized in that, The inlet end of the detection tube is inside the material box, while the inlet end of the cleaning tube is outside the material box.

3. The silicon material detector according to claim 2, characterized in that, An air filter is installed inside the inlet of the cleaning pipe, and a flow meter is connected between the air particle counter and the pump.

4. The silicon material detector according to any one of claims 1 to 3, characterized in that, The air particle counter has an internal cavity, and a laser emitting part and a laser receiving part are respectively provided in the two opposite side walls of the cavity. The protective membrane is located on the outside of the laser emitting part and the laser receiving part.

5. The silicon material detector according to claim 4, characterized in that, The laser emitting part and the laser receiving part are provided with a second roller and a first roller rotating in the sidewalls of the upper and lower parts. The sidewalls of the first roller and the second roller near the cavity are provided with slots. The protective transparent film is wound on the first roller and the second roller. The protective transparent film on the first roller and the second roller enters the outside of the laser emitting part or the laser receiving part through the slots.

6. The silicon material detector according to claim 5, characterized in that, A sealing gasket is provided at the top and bottom of the slot, and the protective membrane slides between the two sealing gaskets.

7. The silicon material detector according to claim 5, characterized in that, A torsion spring or a clock spring is provided between the first roller and the air particle counter, and a motor is provided on the air particle counter on the side of the second roller to drive its rotation.

8. The silicon material detector according to claim 7, characterized in that, Vertically arranged guide blocks are provided on the side walls of both the laser emitting part and the laser receiving part. The top and bottom of the guide blocks extend to the slots on the sides of the second roller and the first roller, respectively. The inner side wall of the guide blocks is provided with guide grooves for the sliding of the protective membrane.

9. The silicon material detector according to claim 8, characterized in that, The guide groove has sealing gaskets on both sides, and the protective membrane slides between the two sealing gaskets.

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