Nanometer silicon powder collecting device

Abstract

The utility model relates to the technical field of nano silicon processing, in particular to a nano silicon powder collecting device. Comprising a collecting tank, a discharging valve, a cover plate, an adding assembly and a pumping and removing assembly, the pumping and removing assembly comprises a positioning seat, a first filter screen, a fixing plate, a connecting frame, a second filter screen, a branch pipe, a vacuum pump, a monitoring component and a blocking component, nanometer silicon powder is fed by opening the adding assembly and closing the discharging valve, and it needs to be guaranteed that the first filter screen is not submerged during feeding; then the adding assembly is closed, external air can be directly prevented from entering the interior, a vacuum pump is further started, a control valve on a branch pipe is opened, dust is filtered through a first filter screen and a second filter screen, internal gas can be pumped out, internal powder is prevented from being oxidized, and a discharging valve is opened when material guiding use is needed; therefore, the problem that the existing collecting device does not have the function of keeping the low oxygen in the internal environment, so that the risk that the nano silicon powder is oxidized exists, and the production quality of the product is reduced can be solved.

Description

Technical Field

[0001] This utility model relates to the field of nano-silicon processing technology, and in particular to a nano-silicon powder collection device. Background Technology

[0002] In existing technologies for collecting microsilica powder used in silicon production and processing, due to the inherent characteristics of microsilica powder, it is easy for it to adhere to the inner wall of the collection box during the collection process. This makes it difficult to effectively clean the inner wall of the collection box. Furthermore, when using a filter screen to assist in the collection of microsilica powder, the filter screen is prone to clogging after prolonged use, which in turn affects the overall collection work.

[0003] Existing technology CN217312431 U discloses a microsilicon powder collection device for silicon production and processing, including a main cavity. A motor is centrally located at the top of the main cavity. The motor's housing is fixedly connected to the top of the main cavity via a reinforcing arm. A rotating shaft is movably connected to the drive end at the bottom of the motor. The rotating shaft passes through the inner cavity at the top of the main cavity and is movably sleeved therewith. A filter plate is movably sleeved on the outer wall of the rotating shaft. The filter plate is located on the inner side of the top of the main cavity, and its sidewall is fixedly connected to the inner wall of the main cavity. A processing mechanism is provided on the side of the rotating shaft. The provided conveying pipe facilitates the transport of microsilicon powder generated by external silicon processing equipment into the main cavity. Simultaneously, the main cavity effectively collects the microsilicon powder, and the filter plate inside the main cavity effectively filters and collects the microsilicon powder while facilitating the discharge of internal gases.

[0004] However, the aforementioned collection device does not have the function of maintaining a low-oxygen internal environment during actual use, which makes the nano-silicon powder susceptible to oxidation, thereby reducing the quality of the product output. Utility Model Content

[0005] The purpose of this invention is to provide a nano-silicon powder collection device, which aims to solve the problem that existing collection devices do not have the function of maintaining a low-oxygen internal environment, which makes nano-silicon powder susceptible to oxidation and thus reduces the quality of the product.

[0006] To achieve the above objectives, this utility model provides a nano-silicon powder collection device, including a collection tank, a discharge valve at the bottom of the collection tank, a detachable cover plate at the top, a sealable addition component on the cover plate, and a removal component;

[0007] The extraction assembly includes a positioning seat, a first filter screen, a fixing plate, a connecting frame, a second filter screen, a branch pipe, a vacuum pump, a monitoring component, and a blocking component. The positioning seat is fixed to the cover plate and penetrates through the cover plate. The first filter screen is fixed to the bottom of the positioning seat. The fixing plate is fixed to the top of the positioning seat. The connecting frame is welded to the bottom of the fixing plate and slidably connected to the positioning seat. The second filter screen is fixed to the bottom of the connecting frame and located above the first filter screen. The branch pipe is welded to one side of the positioning seat and communicates with the positioning seat after welding. The air inlet is located above the second filter screen. A control valve is provided on the branch pipe. The vacuum pump is located on the air outlet side of the branch pipe. The monitoring component is located in front of the collection tank. The blocking component is located on the air outlet side of the vacuum pump.

[0008] The monitoring component includes a humidity sensor and an oxygen content sensor. The humidity sensor is mounted on the collection tank and located at the front of the collection tank; the oxygen content sensor is mounted at the front of the collection tank and close to the humidity sensor.

[0009] The blocking component includes a connecting plate and a filter head. The connecting plate is fixed to the outlet side of the vacuum pump, and the filter head is welded to the connecting plate.

[0010] A one-way valve is also installed between the branch pipe and the vacuum pump.

[0011] The nano-silicon powder collecting device further includes a placement component, which includes a placement tube and a sealing cap. The placement tube is fixed to the cap plate, and its bottom is not penetrated. A filter screen structure is provided on the bottom of the placement tube. A desiccant is placed inside the bottom of the placement tube. The sealing cap is fixed to the top of the placement tube.

[0012] This invention discloses a nano-silicon powder collection device. Nano-silicon powder is added into the collection tank by opening the adding component and closing the discharge valve. During addition, it is essential to ensure that the first filter screen is not submerged. Then, the adding component is closed to directly prevent external air from entering the tank. Furthermore, the vacuum pump is turned on and the control valve on the branch pipe is opened. Dust is filtered through the first and second filters, allowing internal gases to be extracted, thus preventing oxidation of the internal powder. When the powder needs to be transferred, the discharge valve is opened. This invention solves the problem that existing collection devices lack the ability to maintain a low-oxygen internal environment, which poses a risk of oxidation of the nano-silicon powder and reduces product quality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of the nano-silicon powder collection device according to the first embodiment of this utility model.

[0015] Figure 2 This is a schematic diagram of the connecting frame according to the first embodiment of this utility model.

[0016] Figure 3 This is a schematic diagram of the overall structure of the nano-silicon powder collection device according to the second embodiment of this utility model.

[0017] Figure 4 This is a cross-sectional view of the placement tube according to the second embodiment of this utility model.

[0018] In the diagram: 101-Collection tank, 102-Discharge valve, 103-Cover plate, 104-Adding component, 105-Positioning seat, 106-First filter screen, 107-Fixing plate, 108-Connecting frame, 109-Second filter screen, 110-Branch pipe, 111-Vacuum pump, 112-Humidity sensor, 113-Oxygen content sensor, 114-Connecting plate, 115-Filter head, 116-One-way valve, 201-Placement pipe, 202-Sealing cover. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0020] Example 1:

[0021] like Figure 1 and Figure 2 As shown, where Figure 1 This is a schematic diagram of the overall structure of the nano-silicon powder collection device. Figure 2 This is a schematic diagram of the connecting frame 108. This utility model provides a nano-silica powder collection device, including a collection tank 101, a discharge valve 102, a cover plate 103, an adding component 104, and a removal component. The removal component includes a positioning seat 105, a first filter screen 106, a fixing plate 107, a connecting frame 108, a second filter screen 109, a branch pipe 110, a vacuum pump 111, a monitoring component, and a blocking component. The monitoring component includes a humidity sensor 112 and an oxygen content sensor 113. The blocking component includes a connecting plate 114 and a filter head 115. This solution solves the problem that existing collection devices lack the ability to maintain a low-oxygen internal environment, which poses a risk of oxidation to the nano-silica powder and reduces product quality. It is understood that this solution can prevent the nano-silica powder from being oxidized during storage.

[0022] In this embodiment, the collection tank 101 is provided with a discharge valve 102 at the bottom and a detachable cover plate 103 at the top. A sealable addition component 104 is provided on the cover plate 103. The discharge valve 102 can be opened to discharge raw materials. The cover plate 103 is fixed by bolts. The addition component 104 includes an addition tube and a threaded cap. The addition tube is welded to the cover plate 103. The threaded cap is installed on the top of the addition tube. The threaded cap can be removed to add materials. After adding materials, it can be installed to seal.

[0023] The positioning seat 105 is fixed to the cover plate 103 and passes through the cover plate 103. The first filter screen 106 is fixed to the bottom of the positioning seat 105. The fixing plate 107 is fixed to the top of the positioning seat 105. The connecting frame 108 is welded to the bottom of the fixing plate 107 and is slidably connected to the positioning seat 105. The second filter screen 109 is fixed to the bottom of the connecting frame 108 and is located above the first filter screen 106. The branch pipe 110 is welded to one side of the positioning seat 105 and communicates with the positioning seat 105 after welding. The air inlet is located above the second filter screen 109. A control valve is provided on the branch pipe 110. The vacuum pump 111 is provided on the air outlet side of the branch pipe 110. The monitoring component is provided on the front side of the collection tank 101. The blocking component is provided on the air outlet side of the vacuum pump 111. The positioning seat 105 has a U-shaped cross-section. The mounting plate is fixed with bolts. A sealing gasket is provided on the contact surface between the mounting plate and the cover plate 103 for sealing. The fixing frame of the first filter screen 106 is fixed with bolts. The fixing plate 107 is fixed with bolts. The connecting frame 108 consists of four pull rods and a circular block. The pull rods are welded to the fixing plate 107. The circular block can slide in the inner circular cavity of the positioning seat 105. An O-shaped groove is provided on the outside of the circular block. An O-shaped rubber heat-resistant sealing ring is fitted in the O-shaped groove to further seal against the inner wall of the positioning seat 105. At the same time, a circular cavity is provided on the vertical center line of the circular block to facilitate the installation of the second filter screen 109. The fixing bracket of the second filter screen 109 is fixed by bolts. The filter hole diameters of the first filter screen 106 and the second filter screen 109 are the same. When the first filter screen 106 is damaged, the second filter screen 109 will play the main filtering role. The air inlet side of the branch pipe 110 is welded to the outside of the mating hole of the positioning seat 105. A control valve is provided on the branch pipe 110. The control valve can be a manual valve or an electric valve for easy opening and closing control. The air inlet flange of the vacuum pump 111 is connected to the connecting flange of the branch pipe 110 by a screw nut. The monitoring component is used for internal humidity and oxygen content detection. The blocking component prevents external impurities from entering the vacuum pump 111.

[0024] Secondly, the humidity sensor 112 is mounted on the collection tank 101 and located at the front of the collection tank 101; the oxygen content sensor 113 is mounted at the front of the collection tank 101 and close to the humidity sensor 112. Both the humidity sensor 112 and the oxygen content sensor 113 are mounted at the front of the collection tank 101, with their detection heads extending into the interior to monitor internal humidity and oxygen content. Existing products in the prior art can be directly used. A controller is mounted on the collection tank 101. The controller is electrically connected to the humidity sensor 112, the oxygen content sensor 113, and other electrical components of the device via a power cord. The controller has operation buttons for operation and a data display screen for data display.

[0025] Then, the connecting plate 114 is fixed to the outlet side of the vacuum pump 111; the filter head 115 is welded to the connecting plate 114. The connecting plate 114 is fixed by screws and nuts, and has a circular hole inside, which is concentric with the inner hole of the circular pipe on the outlet side of the vacuum pump 111. The filter head 115 has a U-shaped cross-section, and a filter screen structure is provided on its end face to facilitate air passage and reduce the entry of external impurities into the pipe of the vacuum pump 111.

[0026] Finally, a one-way valve 116 is also connected between the branch pipe 110 and the vacuum pump 111. The one-way valve 116 opens when the vacuum pump 111 is working and closes when the vacuum pump 111 stops, thereby further preventing the control valve on the branch pipe 110 from not closing in time, causing external air to enter the interior.

[0027] When using this invention to address the problem that existing collection devices lack the function of maintaining a low-oxygen internal environment, which poses a risk of oxidation to nano-silicon powder and thus reduces product quality, the nano-silicon powder is collected by opening the adding component 104 and closing the discharge valve 102 to add the nano-silicon powder into the collection tank 101. During addition, it is necessary to ensure that the first filter screen 106 is not submerged. Then, closing the adding component 104 directly prevents external air from entering the interior. Furthermore, by turning on the vacuum pump 111 and opening the control valve on the branch pipe 110, dust filtration is performed through the first filter screen 106 and the second filter screen 109, thus extracting the internal gas and preventing oxidation of the internal powder. When material needs to be transferred, the discharge valve 102 can be opened. This effectively solves the problem that existing collection devices lack the function of maintaining a low-oxygen internal environment, which poses a risk of oxidation to nano-silicon powder and reduces product quality.

[0028] Example 2:

[0029] like Figure 3 and Figure 4 As shown, where Figure 3 This is a schematic diagram of the overall structure of the nano-silicon powder collection device. Figure 4 This is a cross-sectional view of the placement tube 201. Based on the first embodiment, the present invention provides a nano-silicon powder collection device, which further includes a placement component, including the placement tube 201 and a sealing cap 202.

[0030] The placement tube 201 is fixed to the cover plate 103, with its bottom not penetrating, and a filter screen structure is provided on its bottom. A desiccant is placed inside the bottom of the placement tube 201. The sealing cap 202 is fixed to the top of the placement tube 201. The placement tube 201 has a U-shaped cross-section, with a penetrating internal cavity. A filter screen structure is provided on its bottom for dust filtration and ventilation, and a desiccant is placed inside. The sealing cap 202 is fixed with bolts to seal the top of the placement tube 201.

[0031] In this embodiment, by setting up the placement tube 201 and placing a desiccant at the bottom of the placement tube 201, the moisture inside the collection tank 101 can be treated, which helps to ensure a dry storage environment.

[0032] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A nanometer silicon powder collecting device, comprising a collecting tank, wherein a discharge valve is arranged at the bottom of the collecting tank, and a detachable cover plate is arranged at the top of the collecting tank, and a sealable adding assembly is arranged on the cover plate, characterized in that: a removing assembly is further arranged; the removing assembly comprises a positioning seat, a first filter screen, a fixing plate, a connecting frame, a second filter screen, a branch pipe, a vacuum pump, a monitoring component and a blocking component, the positioning seat is fixed on and penetrates through the cover plate, the first filter screen is fixed at the bottom of the positioning seat, the fixing plate is fixed at the top of the positioning seat, the connecting frame is welded below the fixing plate and is in sliding connection with the positioning seat, the second filter screen is fixed at the bottom of the connecting frame and is located above the first filter screen, the branch pipe is welded at one side of the positioning seat and is in communication with the positioning seat after welding, and the gas inlet is located above the second filter screen, a control valve is arranged on the branch pipe, the vacuum pump is arranged at the gas outlet side of the branch pipe, the monitoring component is arranged at the front side of the collecting tank, and the blocking component is arranged at the gas outlet side of the vacuum pump.

2. The nanometer silicon powder collecting device according to claim 1, characterized in that: the monitoring component comprises a humidity sensor and an oxygen content sensor, the humidity sensor is arranged on the collecting tank and is located at the front side of the collecting tank, and the oxygen content sensor is arranged at the front side of the collecting tank and is close to the humidity sensor.

3. The nanometer silicon powder collecting device according to claim 1, characterized in that: the blocking component comprises a connecting plate and a filter head, the connecting plate is fixed at the gas outlet side of the vacuum pump, and the filter head is welded on the connecting plate.

4. The nanometer silicon powder collecting device according to claim 1, characterized in that: a one-way valve is further arranged between the branch pipe and the vacuum pump. The nanometer silicon powder collecting device further comprises a placing assembly, the placing assembly comprises a placing pipe and a sealing cover, the placing pipe is fixed on the cover plate, the inner bottom of the placing pipe does not penetrate, a filter screen structure is arranged at the bottom of the placing pipe, and a drying agent is placed at the inner bottom of the placing pipe, and the sealing cover is fixed at the top of the placing pipe. ​ ​ ​ ​ 5. The nanosilicon dust collection apparatus of claim 1, wherein : ​

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