A vertical thin film dryer cone cleaning device

Abstract

The utility model discloses a vertical thin film drying machine cone cleaning device, including inverted conical body, set up on inverted conical body's nitrogen gas purging mouth and set up in the inside of inverted conical body's lubricating grease import channel, lubricating grease export channel, bearing support, connecting piece and scraper, the upper end of bearing support is connected with the rotor bottom of vertical thin film drying machine, and the connecting place is opposite with nitrogen gas purging mouth, the lubricating grease import channel of the side wall of bearing support is communicated respectively, the lubricating grease export channel of, lubricating grease import channel's port, lubricating grease export channel's port is located in the upper portion side wall of inverted conical body respectively, the lower end of bearing support is communicated connecting piece, and connecting piece is connected at least two scrapers through support rod, and scraper is parallel with the side wall of inverted conical body and has the preset gap. The utility model can solve the technical problem of vertical thin film drying machine when handling polysilicon production industry in chlorosilane slurry, and the technical problem of plugging because of metal chloride and high polymer incrustation.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to a cone cleaning device for a vertical film dryer. Background Technology

[0002] A thin-film dryer is a continuous-operation, conduction-heated drying device. It utilizes an internally installed high-speed rotating scraper rotor to scrape the liquid or slurry to be dried onto a heated wall surface, forming an extremely thin liquid film. Heat conducted through the wall surface causes the volatile components in the liquid film to evaporate rapidly. Simultaneously, the scraper continuously cleans the heat transfer surface and pushes the dried solid material towards the discharge port. Thin-film dryers feature high heat transfer efficiency and short material residence time, making them particularly suitable for processing heat-sensitive, high-viscosity, or easily fouling materials. They are widely used in chemical, pharmaceutical, food, environmental protection, and other industrial fields. Cleaning, in this context, refers to the process of removing contaminants or coatings that form on the surface of an object due to physical, chemical, or biological processes, restoring the original surface condition.

[0003] In the process of realizing this utility model, it was discovered that the existing cold hydrogenation system in the polysilicon production process generates a large amount of metal chlorides and polymers. These substances adhere to the cone of the dryer during the processing of chlorosilane slurry in the thin film dryer. If the deposits are not cleaned in time, they will cause blockage at the cone of the dryer over time, making the system unable to operate normally for a long time and requiring shutdown for cleaning. This not only reduces production efficiency but also significantly increases production costs. Utility Model Content

[0004] In view of this, the present invention provides a cone cleaning device for a vertical thin film dryer, which can solve the technical problem of blockage caused by metal chlorides and polymer scaling when the vertical thin film dryer is processing chlorosilane slurry in the polysilicon production industry.

[0005] To achieve the above objectives, an embodiment of this utility model provides a conical cleaning device for a vertical film dryer, comprising: an inverted conical body, a nitrogen purging port disposed on the inverted conical body, and a grease inlet channel, a grease outlet channel, a bearing bracket, a connector, and scrapers disposed inside the inverted conical body; the upper end of the bearing bracket is connected to the bottom of the rotor of the vertical film dryer, and the connection is opposite to the nitrogen purging port; the grease inlet channel and the grease outlet channel are respectively connected to the side wall of the bearing bracket, and the ports of the grease inlet channel and the grease outlet channel are respectively located on the upper side wall of the inverted conical body; the lower end of the bearing bracket is connected to the connector, and the connector is connected to at least two scrapers via a support rod, and the scrapers are parallel to the side wall of the inverted conical body and have a preset gap.

[0006] Optionally, it includes: a heat source coil is installed on the outer wall of the conical body, and the heat source coil is provided with a heat source inlet and a heat source outlet.

[0007] Optionally, a thermometer port is provided on the outer wall of the inverted conical body.

[0008] Optionally, a drain port is provided at the lower part of the outer wall of the inverted conical body.

[0009] Optionally, the upper end of the bearing bracket is connected to the bottom of the rotor of the vertical film dryer via a flange and a keyway.

[0010] Optionally, the lower end of the bearing bracket is connected to the connector via a flange.

[0011] Optionally, the bearing bracket is square; the grease inlet channel and the grease outlet channel are respectively inclined upward to the upper sidewall of the inverted conical body.

[0012] Optionally, the lower end of each scraper is positioned lower than the lower end of the connector.

[0013] Optionally, a flange is installed at the lower end of the inverted conical body.

[0014] One embodiment of the above-mentioned utility model has the following advantages or beneficial effects: The utility model provides a solution that can achieve online cleaning, clear blockages without stopping the equipment, greatly extend the online operation cycle of the equipment, improve production efficiency, reduce production costs, is highly targeted, safe and stable, and is extremely operable.

[0015] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0016] The accompanying drawings are provided to better understand this utility model and do not constitute an undue limitation thereof. Wherein:

[0017] Figure 1 This is a schematic diagram of the structure of the cone cleaning device for a vertical film dryer according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the rotor structure of a vertical thin film dryer according to an embodiment of the present utility model;

[0019] Figure 3 This is a structural schematic diagram of a vertical thin film dryer according to an embodiment of the present invention. Detailed Implementation

[0020] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These embodiments should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0021] At least one embodiment of this utility model provides a cone cleaning device for a vertical thin film dryer, such as... Figure 1 As shown, the vertical film dryer cone cleaning device may include an inverted conical body 8, a nitrogen purging port 1 disposed on the inverted conical body 8, and a grease inlet channel 2, a grease outlet channel 5, a bearing bracket 7, a connector 3, and a scraper 4 disposed inside the inverted conical body 8. In an embodiment, the upper end of the bearing bracket 7 is connected to the bottom of the rotor of the vertical film dryer, and the connection point is opposite to the nitrogen purging port 1, so that nitrogen is purged to the connection point to establish a positive pressure environment and prevent solid particles from entering and causing bearing wear.

[0022] The grease inlet channel 2 and the grease outlet channel 5 are respectively connected to the side wall of the bearing bracket 7. The port of the grease inlet channel 2 and the port of the grease outlet channel 5 are respectively located on the upper side wall of the inverted conical body 8. Thus, the grease lubricates the bearing bracket 7 through the grease inlet channel 2. When the grease in the bearing bracket 7 reaches a certain capacity, it can be discharged through the grease outlet channel 5. Of course, the bearing bracket 7 can also be observed through the grease outlet channel 5.

[0023] The lower end of the bearing bracket 7 is connected to the connector 3. The connector 3 is connected to at least two scrapers 4 via a support rod. The scrapers 4 are parallel to the side wall of the inverted conical body 8 and have a preset gap. That is, the angle of the scraper 4 is consistent with the angle of the side wall of the inverted conical body 8. The coverage area of ​​the scraper 4 can cover the connector 3, keeping the gap between the scraper 4 and the inner wall of the dryer stable. For example, the coverage area is about 1.1㎡.

[0024] In addition, in some preferred embodiments, the vertical film dryer cone cleaning device of this utility model, such as... Figure 1-3 As shown, the upper end of the bearing bracket 7 is connected to the bottom of the rotor of the vertical film dryer via a flange and keyway. Example: Connection position as shown... Figure 2 Rotor bottom B.

[0025] It should be noted that the lower end of the bearing bracket 7 is connected to the connector 3 via a flange.

[0026] In addition, there are some embodiments, such as Figure 1 The vertical film dryer conical cleaning device of this utility model includes a bearing support 7 with a square structure to prevent the rotor from swaying radially, and the grease inlet channel 2 and the grease outlet channel 5 are respectively inclined upward to the upper side wall of the inverted conical body 8.

[0027] As some examples, such as Figure 1 The vertical film dryer cone cleaning device of this utility model further includes a lower end position of each scraper 4 that is lower than the lower end position of the connector 3, so as to facilitate the discharge of blockage material from the equipment and achieve the cleaning of the cone.

[0028] It is worth noting that the extension connection form, extension ratio, sealing form, size ratio and material of the scraper 4 spindle can be configured according to actual needs.

[0029] As some other embodiments of this utility model, the vertical film dryer cone cleaning device, such as Figure 1 , 3 As shown, a heat source coil 6 is installed on the outer wall of the conical body 8, and the heat source coil 6 is provided with a heat source inlet 10 and a heat source outlet 12. Preferably, the coverage area of ​​the heat source coil 6 is the same as that of the scraper 4.

[0030] There are also some embodiments of this utility model, such as Figure 1 The vertical film dryer cone cleaning device of this utility model also includes a thermometer port 11 provided on the outer wall of the inverted cone-shaped body 8.

[0031] As other embodiments of this utility model, such as Figure 1 The vertical film dryer cone cleaning device of this utility model also includes a drain port 9 provided on the lower part of the outer wall of the inverted cone-shaped body 8.

[0032] And, as some other embodiments of this utility model, such as Figure 1 The vertical film dryer cone cleaning device of this utility model also includes a flange installed at the lower end of the inverted cone-shaped body 8.

[0033] As can be seen, the vertical film dryer cone cleaning device of this utility model operates with the same rotation speed as the internal rotor speed of the dryer, continuously scraping off the material that accumulates on the inner wall of the inverted cone-shaped body 8, preventing the material from accumulating and clogging the bottom outlet. That is, it continuously cleans the cone of the vertical film dryer online, using an extended mechanical scraper to discharge the clogging material from the equipment, thus achieving cleaning.

[0034] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cone cleaning device for a vertical thin film dryer, characterized in that, It includes an inverted conical body, a nitrogen purging port disposed on the inverted conical body, and a grease inlet channel, a grease outlet channel, a bearing bracket, a connector, and a scraper disposed inside the inverted conical body; The upper end of the bearing bracket is connected to the bottom of the rotor of the vertical film dryer, and the connection point is opposite to the nitrogen purging port. The grease inlet channel and the grease outlet channel are respectively connected to the side wall of the bearing bracket, and the port of the grease inlet channel and the port of the grease outlet channel are respectively located on the upper side wall of the inverted conical body; The lower end of the bearing bracket is connected to the connector, and the connector is connected to at least two scrapers via a support rod. The scrapers are parallel to the side wall of the inverted conical body and have a preset gap.

2. The vertical film dryer cone cleaning device according to claim 1, characterized in that, include: A heat source coil is installed on the outer wall of the conical body, and the heat source coil is provided with a heat source inlet and a heat source outlet.

3. The vertical film dryer cone cleaning device according to claim 1, characterized in that, include: A thermometer port is provided on the outer wall of the inverted conical body.

4. The vertical film dryer cone cleaning device according to claim 1, characterized in that, include: A drain port is provided on the lower part of the outer wall of the inverted conical body.

5. The vertical film dryer cone cleaning device according to claim 1, characterized in that, include: The upper end of the bearing bracket is connected to the bottom of the rotor of the vertical film dryer via a flange and keyway.

6. The vertical film dryer cone cleaning device according to claim 1, characterized in that, include: The lower end of the bearing bracket is connected to the connector via a flange.

7. The vertical film dryer cone cleaning device according to claim 1, characterized in that, include: The bearing bracket is square; The grease inlet channel and the grease outlet channel are respectively inclined upward to the upper side wall of the inverted cone-shaped body.

8. The vertical film dryer cone cleaning device according to claim 1, characterized in that, include: The lower end of each scraper is lower than the lower end of the connector.

9. The vertical film dryer cone cleaning device according to claim 1, characterized in that, include A flange is installed at the lower end of the inverted conical body.

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