Filter for silicon dioxide powder

Abstract

The utility model discloses a filter for silicon dioxide powder. The filter comprises a filter main body, a silicon dioxide powder inlet, a silicon dioxide powder outlet, an exhaust nozzle, a stirring blade, a filter and a gas supply assembly, the silicon dioxide powder inlet and the exhaust nozzle are arranged on the filter main body cover body; the silicon dioxide powder outlet is formed in the filter main body, the filter is arranged in a container of the filter main body, the stirring blade is of a U-shaped hollow structure, and the stirring blade is rotatably arranged in the container of the filter main body and located in a mounting gap between the filter and the container; a plurality of gas spraying holes facing the side surface and the bottom surface of the filter are formed in the stirring blades at intervals; the gas supply assembly is arranged below the filter main body, and a gas outlet of the gas supply assembly is communicated with the inner cavity of the stirring blade. According to the utility model, the problem that the filter needs to be frequently opened for cleaning in the filtering operation process in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial production filter technical field especially, it relates to a filter for silicon dioxide powder. BACKGROUND

[0002] Silica is widely used as an additive in the production of silicone resin and adhesive, which can increase viscosity, adjust thixotropy and improve the mechanical properties of the material. In particular, fumed silica, also known as pyrogenic silica, can be used as an additive in high-value silicone rubber and adhesive.

[0003] The primary particle size of fumed silica is very small, about 5-50 nm, and the primary particles have a beaded structure, forming aggregates of hundreds to tens of microns. These aggregates are dispersed in the resin, and the aggregate structure is broken, resulting in increased viscosity and thixotropy. When there are aggregates (hereinafter referred to as large particles) that are not easily dispersed in the resin, particles are formed, and the viscosity of the resin after the addition of silica is inconsistent, affecting the appearance of the product.

[0004] If large particles are present in the silica product, they need to be filtered through a filter. These large particles are generally hundreds to thousands of mm in size, and are not large in size. If the filtration operation is continued, the filter is easily clogged, affecting the filtration effect, and the filter needs to be frequently opened for cleaning during the filtration operation, which is inconvenient. Therefore, a filter for silica powder is needed to solve the problem of frequent opening of the filter for cleaning during the filtration operation in the prior art. SUMMARY

[0005] The utility model discloses a filter for silica powder, which can solve the problem of frequent opening of the filter for cleaning during the filtration operation in the prior art.

[0006] The utility model is implemented as follows:

[0007] The utility model provides a kind of silica powder filter, including filter main body, silica powder inlet, silica powder outlet, exhaust nozzle, stirring vane, filter and gas supply assembly;Silica powder inlet is installed in the cover side of filter main body, exhaust nozzle is installed in the cover top of filter main body;Silica powder outlet is installed in the container bottom of filter main body, filter is arranged in the container of filter main body, and installation gap is left between the outer wall of filter and the inner wall of the container of filter main body;Stirring vane is U-shaped hollow structure, stirring vane is rotatably arranged in the container of filter main body, and located in the installation gap between filter and container, and a plurality of gas injection holes are formed on stirring vane, which are arranged towards the side and bottom surface of filter;Gas supply assembly is arranged below filter main body, and the gas outlet of gas supply assembly is communicated with the internal cavity of stirring vane.

[0008] The bottom of the stirring vane is provided with a connecting shaft, which penetrates through the bottom surface of the container of the filter main body and connects the output shaft of the engine, so that the stirring vane is rotatably arranged in the installation gap.

[0009] The connecting shaft is a hollow structure and is communicated with the internal cavity of the stirring vane, and the gas supply assembly is mounted on the connecting shaft.

[0010] The gas injection holes located on both sides of the stirring vane are staggered in height.

[0011] The bottom edge of the cover of the filter main body is formed with a first flange, the top edge of the container of the filter main body is formed with a second flange, the top edge of the filter is formed with a third flange, and the third flange is arranged between the first flange and the second flange through a gasket.

[0012] The inlet valve is arranged on the silica powder inlet, the outlet valve is arranged on the silica powder outlet, and the exhaust valve is arranged on the exhaust nozzle.

[0013] The filter is a cylindrical structure with an open top, and the side wall and the bottom surface of the filter are formed with a U-shaped grid cover, the width of the grid cover is not less than the width of the stirring vane, so that the stirring vane is located outside the grid cover during the filtering operation.

[0014] The grid size of the filter is preferably 0.3-5 mm.

[0015] The pore size of the gas injection hole is 0.5-5 mm.

[0016] The distance between the inner wall of the stirring blade and the outer wall of the filter is 2-15mm.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1、The present application is provided with the exhaust nozzle, the stirring blade, the gas injection hole and the gas supply assembly, the gas supply assembly inputs the high-speed flowing gas into the stirring blade, and blows the gas from the gas injection hole of the stirring blade to the grid of the filter, the continuously blown gas with the large particles is discharged from the exhaust nozzle, the filter can be continuously backwashed and cleaned without opening the filter body, the large particles in the filter are continuously removed, and the operation is convenient and efficient.

[0019] 2、The present application is provided with the stirring blade, the gas injection hole and the motor, the motor can drive the stirring blade with the U-shaped structure to rotate 360° on the outside of the filter, thereby the filter is fully jet cleaned through the gas injection holes on the two sides and the bottom, and the gas injection holes on the two sides of the stirring blade are staggered in height, which can further ensure the continuous, comprehensive and efficient backwashing of the filter.

[0020] 3、The present application is provided with the grid cover, the filter and the stirring blade are isolated by the grid cover during the filtration of the silicon dioxide, which prevents the silicon dioxide powder from entering the stirring blade or blocking the gas injection hole through the gas injection hole, thereby ensuring the feasibility and effectiveness of the backwashing of the filter through the stirring blade and the gas injection hole. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the front view of the silicon dioxide powder filter of the present application;

[0022] Figure 2 is the cross-sectional structure schematic view of the silicon dioxide powder filter of the present application;

[0023] Figure 3 is the exploded view of the silicon dioxide powder filter of the present application;

[0024] Figure 4 is the structure schematic view of the stirring blade in the silicon dioxide powder filter of the present application;

[0025] Figure 5 is the cross-sectional structure schematic view of the stirring blade in the silicon dioxide powder filter of the present application;

[0026] Figure 6 is the structure schematic view of the filter in the silicon dioxide powder filter of the present application;

[0027] Figure 7 is the structure schematic view of the stirring blade and the filter in the silicon dioxide powder filter of the present application.

[0028] In the figure, 1 filter body, 2 silica powder inlet, 3 silica powder outlet, 4 exhaust nozzle, 5 stirring blade, 6 gas injection hole, 7 filter, 8 first gasket, 9 second gasket, 10 gas supply inlet, 11 gas supply device, 12 gas pipeline, 13 inlet valve, 14 exhaust valve, 15 outlet valve, 16 engine, 17 gas valve, 18 gasket, 19 mesh cover, 20 connecting shaft, 21 first flange, 22 second flange, 23 third flange. DETAILED DESCRIPTION

[0029] The utility model will be further explained in connection with the drawings and specific embodiments.

[0030] Please refer to the attached Figure 1 to the attached Figure 3 A silica powder filter, comprising a filter body 1, a silica powder inlet 2, a silica powder outlet 3, an exhaust nozzle 4, a stirring blade 5, a filter 7 and a gas supply assembly; the silica powder inlet 2 is installed on the cover side of the filter body 1, and the exhaust nozzle 4 is installed on the cover top of the filter body 1; the silica powder outlet 3 is installed on the container bottom of the filter body 1, the filter 7 is arranged in the container of the filter body 1, and an installation gap is left between the outer wall of the filter 7 and the inner wall of the container of the filter body 1; the stirring blade 5 is in a U-shaped hollow structure, is rotatably arranged in the container of the filter body 1, and is located in the installation gap between the filter 7 and the container; a plurality of gas injection holes 6 are formed on the stirring blade 5 and face the side and bottom of the filter 7; the gas supply assembly is arranged below the filter body 1, and the gas outlet of the gas supply assembly is communicated with the internal cavity of the stirring blade 5.

[0031] The filter 7 is used for filtering silica, and large particles in the silica are retained in the filter 7. The silica powder inlet 2, the filter 7 and the silica powder outlet 3 form a filtering path of the silica, the silica powder enters the filter 7 from the silica powder inlet 2, and is discharged from the silica powder outlet 3 after being filtered by the filter 7.

[0032] The stirring blade 5 is supplied with gas by the gas supply assembly, and blows gas to the filter 7 through the gas injection holes 6 on the stirring blade 5, so that the large particles in the filter 7 are discharged from the exhaust nozzle 4 along with the airflow, and the backwashing effect of cleaning the mesh of the filter 7 is achieved. The gas injection holes 6 blow gas to the filter 7 from the side and bottom, which ensures high backwashing efficiency and comprehensive cleaning effect.

[0033] Preferably, the filter 7 is a metal mesh filter, and the mesh size of the metal mesh filter can be adaptively adjusted according to the actual size of the large particles and meet the requirements of the silica filtering operation.

[0034] Please see the attached Figure 1 to the attached Figure 5 , the bottom of the stirring blade 5 is provided with a connecting shaft 20, the connecting shaft 20 is sealed through the first sealing pad 8 and penetrates the container bottom surface of the filter main body 1 and connects the output shaft of the engine 16, so that the stirring blade 5 is rotatably arranged in the installation gap; the connecting shaft 20 is a hollow structure and communicates with the internal cavity of the stirring blade 5, and the gas supply assembly is installed on the connecting shaft 20.

[0035] Preferably, the engine 16 can adopt the existing technology of one-way or two-way rotating motor, which is used to drive the stirring blade 5 to rotate 360°, so that the gas injection holes 6 on both sides and the bottom of the stirring blade 5 can continuously blow the meshes at various positions on the filter 7, continuously remove the large particles blocking the meshes of the filter 7, and ensure the high efficiency backwashing of the filter 7, and the backwashing effect is good.

[0036] Preferably, the first sealing pad 8 can adopt a rubber ring, so as to ensure that the connecting shaft 20 can drive the stirring blade 5 in the container of the filter main body 1 to rotate under the drive of the engine 16, and ensure the sealing between the connecting shaft 20 and the container of the filter main body 1.

[0037] Please see the attached Figure 1 to the attached Figure 3 , the gas supply assembly includes a gas supply inlet 10, a gas supply device 11, a gas pipeline 12 and a gas valve 17; the gas supply inlet 10 is installed on the connecting shaft 20, one end of the gas pipeline 12 is connected with the gas supply inlet 10 through the second sealing pad 9 and communicates with the internal cavity of the stirring blade 5 through the connecting shaft 20, the other end of the gas pipeline 12 is connected with the gas supply device 11, and the gas valve 17 is installed on the gas pipeline 12.

[0038] The gas supply device 11, the gas pipeline 12, the gas supply inlet 10, the stirring blade 5 and the gas injection hole 6 form the gas flow path during backwashing. Preferably, the gas supply device 11 can adopt the existing technology of compressed air pump, which is used to input high-speed flowing gas into the gas pipeline 12, so as to ensure that the gas sprayed from the gas injection hole 6 can reach a certain linear velocity, so as to meet the needs of cleaning and backwashing the filter 7.

[0039] Preferably, the second sealing pad 9 can adopt a rubber ring, so as to ensure that the rotation of the connecting shaft 20 will not affect the installation and gas delivery of the gas pipeline 12, and the air tightness is good.

[0040] Please see the attached Figure 5 The gas injection holes 6 on both sides of the stirring blade 5 are staggered in height, so as to effectively clean the meshes at different heights of the filter 7 and improve the backwashing effect and efficiency of the filter 7.

[0041] Please refer to the attached drawings Figure 1 and the attached drawings Figure 2 , the cover bottom edge of the filter body 1 is formed with a first flange 21, the container top edge of the filter body 1 is formed with a second flange 22, and the top edge of the filter 7 is formed with a third flange 23, which is arranged between the first flange 21 and the second flange 22 through a gasket 18.

[0042] The gasket 18 clamps the third flange 23, and when the cover of the filter body 1 is covered on the container, the gasket 18 is compressed between the first flange 21 and the second flange 22, so that the filter 7 is stably arranged in the container of the filter body 1, and the air tightness between the cover of the filter body 1 and the container can be ensured through the gasket 18.

[0043] Please refer to the attached drawings Figure 1 and the attached drawings Figure 2 , the silica powder inlet 2 is provided with an inlet valve 13, the silica powder outlet 3 is provided with an outlet valve 15, and the exhaust nozzle 4 is provided with an exhaust valve 14.

[0044] The inlet valve 13 is used to control the opening and closing of the silica powder inlet 2, the outlet valve 15 is used to control the opening and closing of the silica powder outlet 3, and the exhaust valve 14 is used to control the opening and closing of the exhaust nozzle 4. Through the on-off control of each valve body, the working condition switching between the silica powder filtering operation and the filter 7 backwashing and cleaning operation is facilitated.

[0045] Please refer to the attached drawings Figure 6 and the attached drawings Figure 7 , the filter 7 is a cylindrical structure with an open top, the sidewall and the bottom surface of the filter 7 are formed with a U-shaped grid cover 19, the width of the grid cover 19 is not less than the width of the stirring blade 5, so that the stirring blade 5 is located outside the grid cover 19 during the filtering operation.

[0046] During the filtering operation, the stirring blade 5 does not rotate and is separated from the filter 7 through the grid cover 19, which can avoid the silica powder from entering the stirring blade 5 from the gas injection hole 6 after being filtered by the filter 7, and can also greatly reduce the risk of blockage of the gas injection hole 6.

[0047] The grid size of the filter 7 is preferably 0.3-5mm, which can meet the filtering requirements of silica.

[0048] The pore size of the gas injection hole 6 is 0.5-5mm.

[0049] If the size of the gas injection hole 6 is too large, the linear velocity of the gas injection is slow, which is not conducive to the cleaning of the filter 7 mesh, so the aperture of the gas injection hole 6 is designed to be 0.5-5mm. The number and arrangement spacing of the gas injection hole 6 can be adaptively adjusted according to the actual backwashing cleaning requirements.

[0050] The distance between the inner wall of the stirring blade 5 and the outer wall of the filter 7 is 2-15mm.

[0051] When the distance between the stirring blade 5 and the filter 7 is large, the cleaning effect of the gas injection on the filter 7 mesh is poor, and when the distance between the stirring blade 5 and the filter 7 is small, the stirring blade 5 may collide with the filter 7, therefore, the distance between the stirring blade 5 and the filter 7 is preferably controlled to be 2-15mm.

[0052] Please refer to the accompanying drawings Figure 1 to the accompanying drawings Figure 7 , the use method and working principle of the utility model are:

[0053] During the filtering operation, the inlet valve 13 and the outlet valve 15 are opened, the exhaust valve 14 and the gas valve 17 are closed, the stirring blade 5 does not rotate and is located outside the mesh cover 19 of the filter 7, and the gas injection hole 6 on the stirring blade 5 is covered by the mesh cover 19. The silicon dioxide enters the filter 7 from the silicon dioxide powder inlet 2, is filtered by the metal mesh of the filter 7, and is discharged from the silicon dioxide powder outlet 3, and the large particles are trapped in the filter 7.

[0054] When a large amount of large particles accumulate in the filter 7, the filtering efficiency of the filter 7 is affected, and the mesh of the filter 7 is easily blocked, so the filter 7 needs to be backwashed to remove the large particles in the filter 7.

[0055] During backwashing, the exhaust valve 14 and the gas valve 17 are opened, and the inlet valve 13 and the outlet valve 15 are closed. The engine 16 is started, so that the engine 16 drives the stirring blade 5 to rotate 360° in the installation gap between the filter 7 and the container of the filter main body 1. At the same time, the gas supply device 11 fills the internal cavity of the stirring blade 5 with gas through the gas supply inlet 10 and the connecting shaft 20, so that the gas is injected through the gas injection hole 6 and blown to the mesh of the filter 7, and the large particles blocked in the mesh are blown into the filter 7. With the continuous blowing of the airflow, the airflow carrying the large particles in the filter 7 is discharged from the exhaust nozzle 4.

[0056] During the backwashing process, the filter main body 1 does not need to be opened, and the continuous mesh cleaning backwashing of the filter 7 can be carried out by continuous gas supply until the large particles in the filter 7 are completely removed, which is convenient and efficient.

[0057] The above merely describes the preferred embodiments of the present application, but is not intended to limit the protection scope of the present application, and thus, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filter for silica flour, characterized by: The utility model provides a silica powder filter, which comprises a filter body (1), a silica powder inlet (2), a silica powder outlet (3), an exhaust nozzle (4), a stirring blade (5), a filter (7) and a gas supply assembly; the silica powder inlet (2) is installed on the cover side of the filter body (1), and the exhaust nozzle (4) is installed on the cover top of the filter body (1); the silica powder outlet (3) is installed on the container bottom of the filter body (1), the filter (7) is arranged in the container of the filter body (1), and an installation gap is left between the outer wall of the filter (7) and the inner wall of the container of the filter body (1); the stirring blade (5) is in a U-shaped hollow structure, the stirring blade (5) is rotatably arranged in the container of the filter body (1) and located in the installation gap between the filter (7) and the container, a plurality of gas injection holes (6) are formed on the stirring blade (5) and face the side and bottom of the filter (7), and the gas supply assembly is arranged below the filter body (1), and the gas outlet of the gas supply assembly is communicated with the internal cavity of the stirring blade (5).

2. The filter for silica powder according to claim 1, characterized by: The bottom of the stirring blade (5) is provided with a connecting shaft (20) which penetrates through the bottom surface of the container of the filter body (1) and is connected with the output shaft of the engine (16), so that the stirring blade (5) is rotatably arranged in the installation gap; the connecting shaft (20) is in a hollow structure and is communicated with the internal cavity of the stirring blade (5), and the gas supply assembly is arranged on the connecting shaft (20).

3. The filter for silica flour according to claim 2, characterized by: The gas supply assembly comprises a gas supply inlet (10), a gas supply device (11), a gas pipeline (12) and a gas valve (17); the gas supply inlet (10) is arranged on the connecting shaft (20), one end of the gas pipeline (12) is connected with the gas supply inlet (10) and communicated with the internal cavity of the stirring blade (5) through the connecting shaft (20), the other end of the gas pipeline (12) is connected with the gas supply device (11), and the gas valve (17) is arranged on the gas pipeline (12).

4. A filter for silica flour according to any one of claims 1 to 3, characterised in that: The gas injection holes (6) located on both sides of the stirring blade (5) are staggered in height.

5. The filter for silica powder according to claim 1 or 2, characterized by: The bottom edge of the cover of the filter body (1) is provided with a first flange (21), the top edge of the container of the filter body (1) is provided with a second flange (22), the top edge of the filter (7) is provided with a third flange (23), and the third flange (23) is arranged between the first flange (21) and the second flange (22) through a gasket (18).

6. The filter for silica flour according to claim 1, characterized by: The silica powder inlet (2) is provided with an inlet valve (13), the silica powder outlet (3) is provided with an outlet valve (15), and the exhaust nozzle (4) is provided with an exhaust valve (14).

7. The filter for silica flour according to claim 1, characterized by: The filter (7) is in a cylindrical structure with an open top, the side wall and the bottom of the filter (7) are provided with a U-shaped grid cover (19), the width of the grid cover (19) is not less than the width of the stirring blade (5), so that the stirring blade (5) is located outside the grid cover (19) during the filtering operation.

8. The filter for silica powder according to claim 1 or 7, characterized by: The grid size of the filter (7) is preferably 0.3-5 mm.

9. The filter for silica flour according to claim 4, characterized by: The gas injection hole (6) has a diameter of 0.5-5mm.

10. The filter for silica flour according to claim 1, characterized by: The distance between the inner wall of the stirring blade (5) and the outer wall of the filter (7) is 2-15mm.

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