Silicon powder filter with automatic cleaning function

Abstract

The utility model relates to the technical field of polycrystalline silicon production, in particular to a silicon powder filter with an automatic cleaning function, which comprises a tank body, an annular support is mounted on the outer wall of the tank body, one end of a hydraulic push rod is mounted at each of four corners of the bottom of the annular support, and a support base is mounted at the other end of each hydraulic push rod. The surface of one side of the tank body is provided with an air inlet, the surface of the other side of the tank body is provided with one end of an air outlet, the other end of the air outlet is provided with a vacuum pump, the surface of the top of the vacuum pump is provided with an air outlet pipe, and the bottom of the tank body is provided with a discharge port. According to the improved silicon powder filter, the automatic cleaning design is adopted, silicon powder particles on the surface of the filter element can be effectively cleaned, the working efficiency of the silicon powder filter is effectively improved, the separation type design is adopted, the top cover assembly and the tank body adopt the rapid separation type design, the filter element is convenient to maintain and replace, and the service life of the filter element is prolonged. Meanwhile, the inner wall of the tank body can be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of polysilicon production, in particular to a silicon powder filter with an automatic cleaning function. Background Art

[0002] Polysilicon is an important material in the solar photovoltaic industry. Its production process can be divided into several steps: refining silicon ore, refining silicon, preparing silicon rods, cutting silicon wafers, cleaning silicon wafers, growing polysilicon crystals, cutting polysilicon rods, and preparing polysilicon wafers.

[0003] In the production of polysilicon, the generated gas contains a small amount of silicon powder, which needs to be filtered through a silicon powder filter. After long-term use, the silicon powder accumulates on the surface of the filter element of the traditional silicon powder filter, causing the filter element to be blocked, affecting the filtration of the silicon powder filter and resulting in poor filtration efficiency of the silicon powder filter.

[0004] In the process of realizing the present utility model, the inventors found that the prior art had the following problems: 1. When the existing silicon powder filter filters silicon powder, silicon powder accumulates on the surface of the filter element for a long time, which easily causes the filter element to be blocked, thereby reducing the filtering efficiency of the silicon powder filter; 2. The filter element of the existing silicon powder filter is usually fixedly installed inside the tank body, which makes it inconvenient to quickly remove the filter element from the tank body, and it is not easy to maintain and replace the filter element in time, which affects the use of the silicon powder filter. Utility Model Content

[0005] The purpose of the utility model is to provide a silicon powder filter with an automatic cleaning function, so as to solve the problem that the silicon powder filter mentioned in the above background technology has silicon powder causing the filter element to be blocked and the filter element is inconvenient to maintain and replace. To achieve the above purpose, the utility model provides the following technical solutions: a silicon powder filter with an automatic cleaning function, comprising a tank body, an annular bracket is installed on the outer wall of the tank body, one end of a hydraulic push rod is installed at the four corners of the bottom of the annular bracket, and a support base is installed on the other end of the hydraulic push rod, an air inlet is installed on one side surface of the tank body, one end of an air outlet is installed on the other side surface of the tank body, a vacuum pump is installed on the other end of the air outlet, an air outlet pipe is installed on the top surface of the vacuum pump, a discharge port is provided at the bottom of the tank body, an opening cover assembly is installed on the outer wall of the tank body, a top cover assembly is installed on one side surface of the opening cover assembly, and a quick release assembly is installed on one side surface of the top cover assembly.

[0006] The lid opening assembly includes a support block installed on the outer wall of the tank body, a limit rail is installed on the top surface of the support block, a servo motor is installed on the inner wall of the limit rail, a threaded rod is installed on the output end of the servo motor, a slider is installed on the outer wall of the threaded rod, one end of the support rod is installed on one side surface of the slider, and a connecting block is installed on the other end of the support rod.

[0007] The top cover assembly includes a tank cover installed at the bottom of the connecting block, a vibration motor is installed in the middle of the top of the tank cover, a vibration rod is installed at the output end of the vibration motor, a filter element is installed on the outer wall of the vibration rod, and a fixing block is installed at one end of the vibration rod through a thread.

[0008] The quick-release assembly comprises an annular sleeve mounted on one side surface of the fixed block, an annular baffle is mounted on the inner wall of the annular sleeve, an insertion rod is mounted on the inner wall of the annular baffle, and a spring is arranged outside the insertion rod.

[0009] Further preferably, there are four hydraulic push rods in total, and the hydraulic push rods are symmetrical about the central axis of the tank body, and the hydraulic push rods and the tank body form a lifting mechanism through an annular bracket.

[0010] Further preferably, the servo motor forms a transmission mechanism through a threaded rod and a slider.

[0011] Further preferably, the vibration motor forms a transmission mechanism through a vibration rod and a filter element.

[0012] Further preferably, an insert block is provided on the outer wall of the vibration rod, and a slot having an internal dimension structure consistent with the external dimension structure of the insert block is opened on the inner wall of the filter element, and the filter element and the vibration rod form a plug-in structure.

[0013] Further preferably, one end of the vibration rod is provided with a thread, and a circular hole with an internal dimension structure consistent with the external dimension structure of the insertion rod is opened on one side surface of the vibration rod, and the insertion rod forms an elastic mechanism with a spring through an annular baffle and an annular sleeve.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the utility model, an automatic cleaning design is adopted. A vibration rod is installed on the inner wall of the filter element, and a vibration motor is installed at one end of the vibration rod. When the silicon powder filter is used for a long time and silicon powder accumulates to cause the filter element to be blocked, the vibration motor can be started. The vibration motor causes the filter element to vibrate at a high frequency through the vibration rod, which can effectively clean the silicon powder particles on the surface of the filter element. The cleaned silicon powder particles are discharged along the discharge port, which effectively improves the working efficiency of the silicon powder filter.

[0016] In the utility model, a separation design is adopted, and the top cover assembly and the tank body are designed to be quickly separated. The servo motor can be started, and the servo motor drives the threaded rod to rotate, driving the slider to move upward, and the top cover assembly is driven to move upward through the support rod and the connecting block, so that the equipment has the function of self-opening the cover, and the top cover assembly is quickly separated from the tank body, which is convenient for repair and replacement of the filter element, and the inner wall of the tank can be cleaned at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is an enlarged structural diagram of the cover opening component of the utility model;

[0019] Figure 3 This is a schematic diagram of the exploded and enlarged structure of the top cover assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the fully cutaway and enlarged structure of the quick-release assembly of the utility model;

[0021] Figure 5 It is a schematic diagram of the enlarged structure of the filter element of the utility model.

[0022] In the figure: 1. tank body; 2. annular bracket; 3. hydraulic push rod; 4. support base; 5. air inlet; 6. air outlet; 7. vacuum pump; 8. air outlet pipe; 9. discharge port; 10. cover opening assembly; 1001. support block; 1002. limit rail; 1003. servo motor; 1004. threaded rod; 1005. slider; 1006. support rod; 1007. connecting block; 11. top cover assembly; 1101. tank cover; 1102. vibration motor; 1103. vibration rod; 1104. filter element; 1105. fixing block; 12. quick release assembly; 1201. annular sleeve; 1202. annular baffle; 1203. plug rod; 1204. spring. DETAILED DESCRIPTION

[0023] 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 technical personnel in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 5The utility model provides a technical solution: a silicon powder filter with automatic cleaning function, comprising a tank body 1, an annular bracket 2 is installed on the outer wall of the tank body 1, one end of a hydraulic push rod 3 is installed at the four corners of the bottom of the annular bracket 2, and a supporting base 4 is installed on the other end of the hydraulic push rod 3, an air inlet 5 is installed on the surface of one side of the tank body 1, one end of an air outlet 6 is installed on the other side of the tank body 1, a vacuum pump 7 is installed on the other end of the air outlet 6, an air outlet pipe 8 is installed on the top surface of the vacuum pump 7, a discharge port 9 is provided at the bottom of the tank body 1, an opening cover assembly 10 is installed on the outer wall of the tank body 1, a top cover assembly 11 is installed on one side surface of the opening cover assembly 10, and a quick release assembly 12 is installed on one side surface of the top cover assembly 11.

[0025] The lid opening assembly 10 includes a support block 1001 installed on the outer wall of the tank body 1, a limit rail 1002 is installed on the top surface of the support block 1001, a servo motor 1003 is installed on the inner wall of the limit rail 1002, a threaded rod 1004 is installed on the output end of the servo motor 1003, a slider 1005 is installed on the outer wall of the threaded rod 1004, one end of a support rod 1006 is installed on the surface of one side of the slider 1005, and a connecting block 1007 is installed on the other end of the support rod 1006.

[0026] The top cover assembly 11 includes a tank cover 1101 installed at the bottom of the connecting block 1007, a vibration motor 1102 is installed in the middle of the top of the tank cover 1101, a vibration rod 1103 is installed at the output end of the vibration motor 1102, a filter element 1104 is installed on the outer wall of the vibration rod 1103, and a fixing block 1105 is installed at one end of the vibration rod 1103 through a thread.

[0027] The quick-release assembly 12 includes an annular sleeve 1201 mounted on one side surface of the fixing block 1105 , an annular baffle 1202 is mounted on the inner wall of the annular sleeve 1201 , an insert rod 1203 is mounted on the inner wall of the annular baffle 1202 , and a spring 1204 is disposed outside the insert rod 1203 .

[0028] In this embodiment, Figure 1 As shown, there are four hydraulic push rods 3, and the hydraulic push rods 3 are symmetrical about the central axis of the tank body 1, and the hydraulic push rods 3 and the tank body 1 form a lifting mechanism through the annular bracket 2; through this design, the hydraulic push rods 3 can be started as needed to adjust the height of the annular bracket 2 and the tank body 1, thereby adjusting the height of the equipment.

[0029] In this embodiment, Figure 2As shown, the servo motor 1003 forms a transmission mechanism through the threaded rod 1004 and the slider 1005; through this design, the servo motor 1003 can be started, and the servo motor 1003 drives the threaded rod 1004 to rotate, driving the slider 1005 to move upward, and driving the top cover assembly 11 to move upward through the support rod 1006 and the connecting block 1007, so that the equipment has the function of self-opening the cover, and the top cover assembly 11 can be separated from the tank body 1, which is convenient for repairing and replacing the filter element 1104, and the inner wall of the tank body 1 can be cleaned at the same time.

[0030] In this embodiment, Figure 3 As shown, the vibration motor 1102 forms a transmission mechanism through the vibration rod 1103 and the filter element 1104; through the transmission mechanism, when the silicon powder filter has been used for a long time and the silicon powder accumulates to cause the filter element 1104 to be blocked, the vibration motor 1102 can be started, and the vibration motor 1102 can make the filter element 1104 vibrate at a high frequency through the vibration rod 1103, which can effectively clean the silicon powder particles on the surface of the filter element 1104, and the cleaned silicon powder particles are discharged along the discharge port 9.

[0031] In this embodiment, Figure 5 As shown, the outer wall of the vibration rod 1103 is provided with an insert block, and the inner wall of the filter element 1104 is provided with a slot whose internal dimension structure is consistent with the external dimension structure of the insert block, and the filter element 1104 and the vibration rod 1103 form a plug-in structure; through this design, it is convenient to quickly plug and install the filter element 1104 with the vibration rod 1103 through the insert block and the slot, and it is also convenient to pull the filter element 1104 out of the vibration rod 1103.

[0032] In this embodiment, Figure 3 As shown, one end of the vibration rod 1103 is provided with a thread, and a circular hole with an internal size structure consistent with the external size structure of the insertion rod 1203 is opened on the surface of one side of the vibration rod 1103, and the insertion rod 1203 forms an elastic mechanism with the annular baffle 1202 and the annular sleeve 1201 and the spring 1204; through this design, the insertion rod 1203 is first pushed to one side to move the annular baffle 1202 to one side, and the spring 1204 is compressed, and then the fixed block 1105 is rotated and installed with the vibration rod 1103 through the thread. At this time, the insertion rod 1203 is consistent with the circular hole on the surface of the vibration rod 1103, and the spring 1204 is restored, driving the annular baffle 1202 and the insertion rod 1203 to move to one side of the circular hole, so that the insertion rod 1203 is inserted into the circular hole, and the fixed block 1105 and the vibration rod 1103 are fixed again, which can effectively prevent the fixed block 1105 from being displaced during vibration and affecting the use of the equipment.

[0033] The use method and advantages of the utility model: When the silicon powder filter with automatic cleaning function is used, the working process is as follows:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, firstly, the height of the equipment is adjusted by the hydraulic push rod 3 as needed, and then the vacuum pump 7 is started. The gas containing silicon powder enters the tank body 1 through the air inlet 5, is filtered by the filter element 1104, and is discharged from the air outlet 6 and the air outlet pipe 8. The silicon powder is discharged from the discharge port 9. When the silicon powder filter is used for a long time, the silicon powder accumulates and causes the filter element 1104 to be blocked, the vibration motor 1102 can be started. The vibration motor 1102 makes the filter element 1104 vibrate at a high frequency through the vibration rod 1103, which can effectively clean the silicon powder particles on the surface of the filter element 1104. The cleaned silicon powder particles are discharged along the discharge port 9. If the filter element 1104 needs to be repaired or replaced, the servo can be started. Motor 1003, servo motor 1003 drives threaded rod 1004 to rotate, drives slider 1005 to move upward, drives top cover assembly 11 to move upward through support rod 1006 and connecting block 1007, separates top cover assembly 11 from tank body 1, and then pushes plug rod 1203 to one side, moves annular baffle 1202 to one side, compresses spring 1204, and then rotates fixed block 1105 and vibration rod 1103 through thread, separates fixed block 1105 from vibration rod 1103, and then pulls filter element 1104 off from vibration rod 1103 through plug block and slot, and finally repairs and replaces filter element 1104, and cleans the inner wall of tank body 1.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A silicon powder filter with automatic cleaning function, comprising a tank (1), characterized in that: The outer wall of the tank body (1) is installed with an annular bracket (2), one end of a hydraulic push rod (3) is installed at each of the four corners of the bottom of the annular bracket (2), and a supporting base (4) is installed at the other end of the hydraulic push rod (3); an air inlet (5) is installed on one side surface of the tank body (1), one end of an air outlet (6) is installed on the other side surface of the tank body (1), a vacuum pump (7) is installed on the other end of the air outlet (6), an air outlet pipe (8) is installed on the top surface of the vacuum pump (7), a discharge port (9) is provided at the bottom of the tank body (1), an opening cover assembly (10) is installed on the outer wall of the tank body (1), a top cover assembly (11) is installed on one side surface of the opening cover assembly (10), and a quick-release assembly (12) is installed on one side surface of the top cover assembly (11); The lid opening assembly (10) comprises a support block (1001) mounted on the outer wall of the tank body (1); a limit rail (1002) is mounted on the top surface of the support block (1001); a servo motor (1003) is mounted on the inner wall of the limit rail (1002); a threaded rod (1004) is mounted on the output end of the servo motor (1003); a slider (1005) is mounted on the outer wall of the threaded rod (1004); one end of a support rod (1006) is mounted on one side surface of the slider (1005); and a connecting block (1007) is mounted on the other end of the support rod (1006); The top cover assembly (11) comprises a tank cover (1101) mounted on the bottom of a connecting block (1007); a vibration motor (1102) is mounted in the middle of the top of the tank cover (1101); a vibration rod (1103) is mounted at the output end of the vibration motor (1102); a filter element (1104) is mounted on the outer wall of the vibration rod (1103); and a fixing block (1105) is mounted on one end of the vibration rod (1103) via a thread. The quick-release assembly (12) comprises an annular sleeve (1201) mounted on a side surface of a fixed block (1105), an annular baffle (1202) being mounted on the inner wall of the annular sleeve (1201), an insertion rod (1203) being mounted on the inner wall of the annular baffle (1202), and a spring (1204) being disposed on the outside of the insertion rod (1203).

2. The silicon powder filter with automatic cleaning function according to claim 1, characterized in that: There are four hydraulic push rods (3) in total, and the hydraulic push rods (3) are symmetrical with respect to the central axis of the tank body (1), and the hydraulic push rods (3) form a lifting mechanism with the tank body (1) through the annular bracket (2).

3. The silicon powder filter with automatic cleaning function according to claim 1, characterized in that: The servo motor (1003) forms a transmission mechanism through a threaded rod (1004) and a slider (1005).

4. The silicon powder filter with automatic cleaning function according to claim 1, characterized in that: The vibration motor (1102) forms a transmission mechanism through a vibration rod (1103) and a filter element (1104).

5. The silicon powder filter with automatic cleaning function according to claim 1, characterized in that: The outer wall of the vibration rod (1103) is provided with an insert block, and the inner wall of the filter element (1104) is provided with a slot having an internal dimension structure consistent with the external dimension structure of the insert block, and the filter element (1104) and the vibration rod (1103) form a plug-in structure.

6. The silicon powder filter with automatic cleaning function according to claim 1, characterized in that: One end of the vibration rod (1103) is provided with a thread, and a circular hole having an internal dimension structure consistent with the external dimension structure of the insertion rod (1203) is opened on the surface of one side of the vibration rod (1103), and the insertion rod (1203) forms an elastic mechanism with the spring (1204) through the annular baffle (1202) and the annular sleeve (1201).

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