CN218589965U

CN218589965U - Filter with speed reduction buffer

Info

Publication number: CN218589965U
Application number: CN202222863097.1U
Authority: CN
Inventors: 张佳伟; 张鹏飞; 张鹏伟; 郝志广; 张新波
Original assignee: Shandong Yilishen Energy Saving Technology Co ltd
Current assignee: Shandong Yilishen Energy Saving Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-10
Anticipated expiration: 2032-10-28

Abstract

The utility model relates to a monocrystalline silicon production technical field, concretely relates to filter with speed reduction buffer. Comprises a filter body and a deceleration buffer communicated with an inlet of the filter body; the deceleration buffer comprises a deceleration buffer tank body, the top of the deceleration buffer tank body is provided with a deceleration buffer inlet, and the deceleration buffer inlet is communicated with the exhaust end of the melting crucible; the side wall of the deceleration buffer tank body is provided with a deceleration buffer outlet which is communicated with the filter body inlet; and a stainless steel filter screen is arranged in the speed reduction buffer tank body. The utility model discloses install the speed reduction buffer additional at the filter body front end, can effectively intercept the high temperature silicon grain that changes the material crucible sputtering departure, prevent that high temperature silicon grain from directly rushing into the filter in and burn out the filter bag.

Description

Filter with speed reduction buffer

Technical Field

The utility model relates to a monocrystalline silicon production technical field, concretely relates to filter with speed reduction buffer.

Background

At present, the production cost of monocrystalline silicon becomes an important factor for whether the large solar cell has competitive advantages or not.

The production method of the monocrystalline silicon mainly comprises a Czochralski method and a zone melting method, and the yield of the monocrystalline silicon is worldwide, wherein 70-80 percent of the yield is produced by the Czochralski method, and 20-30 percent of the yield is produced by the zone melting method and other methods. A straight-pull method; the simple description of the method is: the raw material is placed in a crucible, a seed crystal rod capable of rotating and lifting is arranged above the crucible, and the lower end of the rod is provided with a chuck on which a seed crystal is tied. After the raw materials are melted by the heater, the seed crystal is inserted into the melt, the proper temperature is controlled, and the needed single crystal can be obtained by rotating and pulling.

The main components of the czochralski method for preparing the monocrystalline silicon are a pulling head, an auxiliary chamber, a furnace cover, a furnace barrel, a lower furnace barrel, a base frame, a transmission device under the crucible, a water separator, a water channel arrangement, an argon pipeline arrangement, a vacuum pump, a vacuum dust removal device, a power supply and an electric control cabinet.

Compared with other methods, the method for producing the monocrystalline silicon by the Czochralski method has the advantages that the growth process of the crystal can be conveniently observed; the growth is carried out on the free surface and is in contact with the crucible, so that the thermal stress can be reduced; the directional seed and the seed crystal narrow neck can be conveniently used to reduce key defects of the crystal, obtain the crystal with the required orientation and the like.

However, in the production process of preparing the monocrystalline silicon by applying the czochralski method, silicon gas and trace impurities in the silicon gas are volatilized when the crucible is melted. The crucible waste gas is directly discharged into the atmosphere, which can pollute the environment and does not meet the environmental protection requirement. Therefore, at present, enterprises install filters at the end to filter pollutants in the exhaust gas.

However, enterprises find that the existing filter has design defects in the actual use process, high-temperature silicon particles in the furnace can splash and fly out, and directly flush into the filter along with high-temperature waste gas, so that a filter bag in the filter is punctured, the phenomenon of burning round holes of the filter bag is caused, and finally the filter is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model provides a filter with speed reduction buffer, its aim at solve the problem that current filter bag easily burns out.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a filter with a deceleration buffer, which comprises a filter body and a deceleration buffer communicated with the inlet of the filter body;

the deceleration buffer comprises a deceleration buffer tank body, the top of the deceleration buffer tank body is provided with a deceleration buffer inlet, and the deceleration buffer inlet is communicated with the exhaust end of the melting crucible; the side wall of the deceleration buffer tank body is provided with a deceleration buffer outlet which is communicated with the inlet of the filter body; a stainless steel filter screen is arranged in the deceleration buffer tank body.

In one embodiment, the inlet top end of the deceleration buffer is provided with a flange.

In one embodiment, the outlet of the deceleration buffer is arranged at the upper middle position of the side wall of the tank body of the deceleration buffer.

In one embodiment, the deceleration buffer outlet communicates with the filter body inlet via a flange.

In one embodiment, the mesh number of the stainless steel filter screen is 60-120.

In one embodiment, a spiral speed reducer is arranged below the inlet of the speed reducing buffer.

In one embodiment, the filter body includes a filter canister, an exhaust outlet, a filter bag, a dust purge port, and a timing vibrator.

In one embodiment, the bottom of the filter tank is provided with a plurality of universal wheels with locking structures.

The utility model discloses the beneficial effect who reaches does:

the utility model discloses install the speed reduction buffer additional at filter body front end, can effectively intercept the high temperature silicon grain that changes the material crucible sputtering departure, prevent that high temperature silicon grain from directly rushing into the filter and burn out the filter bag in.

The utility model discloses a be provided with the stainless steel filter screen in the speed reduction buffer, high temperature resistant is not fragile, and can intercept the volatile substance in the broken bold stove.

Furthermore, the utility model discloses a be provided with spiral decelerator in the speed reduction buffer, can guide the bottom that volatile substance in the stove marched effective slowdown rate and directly carried the speed reduction buffer with volatile substance along the helical direction.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the screw speed reducer of the present invention.

In the figure, 1, a filter tank; 11. an exhaust gas outlet; 12. a filter bag; 13. a dust cleaning port; 14. a timing vibrator; 15. a universal wheel; 2. a deceleration buffer tank body; 21. a deceleration buffer inlet; 22. a deceleration buffer outlet; 23. stainless steel filter screen.

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear \8230;) are involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship between the components in a specific posture (as shown in the attached drawings), the motion situation, etc., and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1-2, the utility model provides a filter with speed reduction buffer, including filter body and with the speed reduction buffer of filter body import intercommunication. The deceleration buffer is used for buffering high-temperature volatile matters flushed out of the furnace at a high speed and preventing impurities or silicon particles entering the filter from being trapped.

The deceleration buffer comprises a deceleration buffer tank body 2, the top of the deceleration buffer tank body 2 is provided with a deceleration buffer inlet 21, and the deceleration buffer inlet 21 is communicated with the exhaust end of the melting crucible; a deceleration buffer outlet 22 is formed in the side wall of the deceleration buffer tank body 2, and the deceleration buffer outlet 22 is communicated with the inlet of the filter body; be provided with stainless steel filter screen 23 in the deceleration buffer jar body 2, stainless steel filter screen 23 will two cavities are cut apart into to the inside of deceleration buffer jar body 2, stainless steel filter screen 23 is used for intercepting, broken volatile substance in the stove.

The embodiment of the utility model provides an in, the 21 tops of speed reduction buffer import are provided with the flange, convenient and pipe connection. In order to prevent the waste gas from leaking, an O-shaped sealing ring is further arranged on the flange.

In the embodiment of the present invention, the deceleration buffer outlet 22 is disposed at the bottom, the middle or the upper portion of the sidewall of the deceleration buffer tank 2.

When the deceleration buffer outlet 22 is provided at the bottom of the side wall of the deceleration buffer tank 2, the volatile matter already deposited at the bottom of the deceleration buffer tank 2 may be lifted up again by the high-temperature volatile matter before the volatile matter is flushed into the filter body, and there is a risk of clogging. If the speed reduction buffer export 22 sets up the middle part of the lateral wall of the speed reduction buffer jar body 2, at first avoided the process of raising the bottom volatile substance like this, played the crushing effect and dispersed heat difficult jam to the bold volatile substance that gets into moreover, the effect preferred. When the deceleration buffer outlet 22 is provided at the upper portion of the side wall of the deceleration buffer tank 2, the filtering effect is poor although it is not blocked, because the filtering area is reduced due to the close access and the filtered volatile matter is correspondingly less, so the outlet is not as good at the upper portion as the middle portion. In summary, the optimal position of the deceleration buffer outlet 22 is the position above the middle of the side wall of the deceleration buffer tank 2.

The embodiment of the utility model provides an in, the speed reduction buffer export 22 through the flange with filter body import intercommunication still is provided with O type sealing washer between two flanges.

Because the instantaneous suction force of the dry pump is overlarge, the high-temperature volatile matters are intercepted by rough filtration, and blockage cannot be formed, the stainless steel filter screen 23 is a heat-resistant stainless steel filter screen 23 with a larger mesh number. Second, larger chunks of in-furnace volatiles can also be broken up.

In the embodiment of the present invention, the stainless steel filter 23 has a mesh number of 60 to 120.

The utility model discloses an in the embodiment, the import 21 below of speed reduction buffer is provided with spiral decelerator to in slow down volatile substance down speed, let the interior volatile substance of stove advance along the spiral direction and effectively slow down the speed and directly carry the bottom of the speed reduction buffer jar body 2 with volatile substance. The air flow reaching the bottom returns to the deceleration buffer outlet 22 (i.e., the inlet of the filter body) and then enters the filter body for filtration.

In an embodiment of the present invention, the spiral reduction gear is similar in structure to a spiral propeller shaft, as shown in fig. 2.

The filter body comprises a filter tank 1, the bottom of the side wall of the filter tank 1 is provided with a filter body inlet, and the filter body inlet is communicated with the outlet 22 of the deceleration buffer; the top of the filter tank 1 is provided with an exhaust gas outlet 11; a filter bag 12 is detachably arranged in the filter tank 1, the filter bag 12 divides the filter tank 1 into two chambers, and the filter bag 12 is used for filtering volatile matters; a dust cleaning port 13 is formed in the bottom of the side wall of the filter tank 1, which is away from the inlet of the filter body, a sealing cover is detachably arranged on the dust cleaning port 13, and dust deposited at the bottom of the filter tank 1 can be cleaned through the dust cleaning port 13 after the filter tank is used for a long time; the upper half part of the filter tank 1 is provided with a timing vibrator 14, and the timing vibrator 14 is used for vibrating the filter bag 12 and shaking off volatile matters filtered by the filter bag 12.

The timing vibrator 14 includes a timing module and an electromagnetic beater, which is a prior art and will not be described in detail herein.

In the embodiment of the utility model, the bottom of crossing filter tank 1 is provided with a plurality of universal wheels 15 that have the locking structure to make things convenient for the removal the utility model discloses an in the embodiment.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A filter with a deceleration buffer, comprising: the filter comprises a filter body and a deceleration buffer communicated with an inlet of the filter body;

the deceleration buffer comprises a deceleration buffer tank body (2), the top of the deceleration buffer tank body (2) is provided with a deceleration buffer inlet (21), and the deceleration buffer inlet (21) is communicated with the exhaust end of the melting crucible; a deceleration buffer outlet (22) is formed in the side wall of the deceleration buffer tank body (2), and the deceleration buffer outlet (22) is communicated with the inlet of the filter body; a stainless steel filter screen (23) is arranged in the deceleration buffer tank body (2).

2. A filter with decelerating buffer as claimed in claim 1, wherein: and a flange is arranged at the top end of the inlet (21) of the deceleration buffer.

3. A filter with decelerating buffer as claimed in claim 1, wherein: the outlet (22) of the deceleration buffer is arranged at the upper middle position of the side wall of the deceleration buffer tank body (2).

4. A filter with a decelerating buffer as claimed in claim 1, wherein: the outlet (22) of the deceleration buffer is communicated with the inlet of the filter body through a flange.

5. A filter with a decelerating buffer as claimed in claim 1, wherein: therefore, the mesh number of the stainless steel filter screen (23) is 60-120.

6. A filter with a decelerating buffer as claimed in claim 1, wherein: and a spiral speed reducer is arranged below the inlet (21) of the speed reducing buffer.

7. A filter with decelerating buffer as claimed in claim 1, wherein: the filter body comprises a filter tank (1), an exhaust gas outlet (11), a filter bag (12), a dust cleaning port (13) and a timing vibrator (14).

8. A filter with decelerating buffer according to claim 7, wherein: the bottom of the filter tank (1) is provided with a plurality of universal wheels (15) with locking structures.