Silica thick slurry spray drying processing device

Abstract

The utility model discloses a silicon dioxide thick slurry spray drying processing device which comprises a drying box, a sprayer is installed on one side of the top of the drying box, a driving shaft rod is installed in the drying box, a scraping mechanism is installed on the driving shaft rod, and the two sides of the scraping mechanism make contact with the inner wall of the drying box respectively. A supporting ring is installed on the portion, below the scraping mechanism, of the driving shaft rod, the scraping mechanism is elastically connected with the supporting ring, an abutting piece is installed on the inner wall of the drying box and located below the scraping mechanism, and when the scraping mechanism descends, the scraping mechanism is matched with the abutting piece in an abutting mode. The scraping mechanism is in close contact with the inner wall of the drying box and is driven by the driving shaft rod to rotate, silicon dioxide residues attached to the inner wall are effectively scraped, and cleanliness and drying efficiency of the drying box are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicon dioxide production, especially to a silicon dioxide thick slurry spray drying processing device. BACKGROUND

[0002] The working principle of the silicon dioxide spray dryer is mainly based on the heat and mass transfer principle. Specifically, the device disperses the silicon dioxide thick slurry into small droplets through an atomizer. These droplets then enter the drying chamber and directly contact hot air. Under the action of hot air, the moisture in the droplets evaporates rapidly, forming a powder or granular silicon dioxide product. The dried product is collected by sedimentation or a cyclone separator, while the exhaust gas is discharged by an exhaust fan.

[0003] The existing patent application with the patent publication number CN217909003U, published on November 29, 2022, is entitled "Silicon dioxide spray drying equipment". This patent includes a drying box and a heating part set on one side of the drying box. The top of the drying box is provided with a material spraying part. The bottom of the drying box is fixedly connected with a support seat. The upper half of the drying box is rotationally connected with a vertical rod. The lower half of the drying box is provided with a driving part. The driving part drives the vertical rod to rotate. A filter screen is arranged in the drying box. The lower half of the vertical rod passes through the filter screen. A placing cavity is formed in the vertical rod. A feeding pump is arranged in the placing cavity. The input end of the feeding pump extends to the outside of the lower half of the vertical rod. The present invention relates to the technical field of silicon dioxide preparation. This patent can scrape off the silicon dioxide liquid adhering to the inner wall of the drying box and send it to the material spraying part, so that it can enter the drying box again for drying, thereby reducing the waste of materials and facilitating the use of operators, saving time and effort.

[0004] In the above-mentioned prior art, although the driving part drives the vertical rod to rotate to allow the scraper in the drying box to scrape off the silicon dioxide remaining on the inner wall, the silicon dioxide gradually accumulates on the scraper during cleaning. If these scrapers fall at the same time, normal drying cannot be performed, which will cause waste of materials or the need for further recovery. Utility model content

[0005] The purpose of the present invention is to provide a silicon dioxide thick slurry spray drying processing device to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a silicon dioxide slurry spray drying processing device, comprising a drying box, a sprayer is installed on one side of the top of the drying box, a driving shaft is installed in the drying box, a scraping mechanism is installed on the driving shaft, and the two sides of the scraping mechanism are respectively in contact with the inner wall of the drying box, the driving shaft is installed with a support ring under the scraping mechanism, the scraping mechanism is elastically connected to the support ring, an abutment is installed on the inner wall of the drying box, the abutment is located below the scraping mechanism, and when the scraping mechanism descends, the scraping mechanism abuts and cooperates with the abutment.

[0007] Preferably, the scraper mechanism comprises a U-shaped scraper frame connected to the driving shaft, and the U-shaped scraper frame is provided with a socket for the driving shaft to pass through.

[0008] Preferably, both sides of the inner wall of the insertion hole are fixedly connected with limit bars, and the outer wall of the driving shaft is vertically provided with a sliding groove matching the limit bars.

[0009] Preferably, the abutment member comprises a connecting ring installed in the drying box, a plurality of abutment blocks are installed in the connecting ring, and both sides of the bottom of the U-shaped scraper frame are fixedly connected with abutment blocks that abut against the abutment blocks.

[0010] Preferably, a plurality of through holes are provided at the bottom of the U-shaped scraper frame, and guide bars are fixed on both sides of the U-shaped scraper frame, and a row of diversion grooves are vertically provided on the guide bars.

[0011] Preferably, adjusting scrapers are respectively installed on both sides of the U-shaped scraper frame, one side of the adjusting scraper bar is fixedly connected to a bracket passing through the U-shaped scraper frame, and an adjusting bolt threadedly connected to the bracket is installed on the inner wall of the U-shaped scraper frame.

[0012] The utility model provides a device for spray drying a concentrated silicon dioxide slurry. It has the following beneficial effects:

[0013] This silicon dioxide concentrated slurry spray drying processing device is equipped with a scraping mechanism that is in close contact with the inner wall of the drying box and rotates under the drive shaft, effectively scraping off the silicon dioxide residue attached to the inner wall, thereby ensuring the cleanliness and drying efficiency of the drying box. At the same time, if too much silicon dioxide is attached to the scraping mechanism itself, the scraping mechanism will drop under the action of gravity. When it drops to a certain height, it will cooperate with the abutment part in the drying box, causing the scraping mechanism to vibrate up and down when rotating, thereby shaking off the attached silicon dioxide and achieving a secondary drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a silicon dioxide slurry spray drying processing device proposed in the utility model;

[0015] Figure 2 This is a partial cross-sectional view of a silicon dioxide slurry spray drying processing device proposed by the present invention;

[0016] Figure 3 for Figure 2 A magnified view of the structure at point A;

[0017] Figure 4 The present invention provides a schematic structural diagram of a scraping mechanism in a silicon dioxide concentrated slurry spray drying processing device.

[0018] Legend:

[0019] 1. Drying box; 2. Sprayer; 3. Drive shaft; 31. Slide; 4. Scraper mechanism; 41. U-shaped scraper frame; 42. Insertion hole; 43. Limiting strip; 44. Pressure block; 45. Through hole; 46. Guide strip; 47. Diverter trough; 48. Adjusting scraper strip; 49. Bracket; 410. Adjusting bolt; 5. Support ring; 51. Top spring; 6. Abutment; 61. Connecting ring; 62. Abutment block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-4, a silica slurry spray drying processing device includes a drying box 1, a sprayer 2 is installed on one side of the top of the drying box 1, a driving shaft 3 is installed in the drying box 1, a scraping mechanism 4 is installed on the driving shaft 3, and both sides of the scraping mechanism 4 are in contact with the inner wall of the drying box 1 respectively. The sprayer 2 is used to spray the silica slurry evenly in the drying box 1. A driving shaft 3 is vertically arranged in the center of the drying box 1. The driving shaft 3 is driven to rotate by an external motor. The U-shaped scraping mechanism 4 is located in the middle of the driving shaft 3. The two wings of the scraping mechanism 4 are in close contact with the inner wall of the drying box 1 to ensure that when the driving shaft 3 rotates, the scraping mechanism 4 can scrape along the inner wall of the drying box 1 to remove the material attached to the wall. The driving shaft 3 is connected to the scraping mechanism 4 is installed below, the scraper mechanism 4 is elastically connected to the supporting ring 5, and a top spring 51 is installed between the supporting ring 5 and the scraper mechanism 4. When the scraper mechanism 4 is operating normally, the top spring 51 pushes the scraper mechanism 4 upward to prevent the scraper mechanism 4 from contacting the abutment 6. The inner wall of the drying box 1 is installed with an abutment 6, which is located below the scraper mechanism 4. When the scraper mechanism 4 descends, the scraper mechanism 4 abuts and cooperates with the abutment 6. If too much silica is attached to the scraper mechanism 4 itself, the scraper mechanism 4 will descend under the action of gravity. When it descends to a certain height, it will cooperate with the abutment 6 in the drying box 1, causing the scraper mechanism 4 to vibrate up and down when rotating, thereby dispersing the attached silica and achieving a secondary drying effect.

[0022] In the present invention, the scraper mechanism 4 includes a U-shaped scraper frame 41 that is plugged into the drive shaft 3. The U-shaped scraper frame 41 is provided with a socket 42 for the drive shaft 3 to pass through. The size and shape of the socket 42 match the drive shaft 3, so that the U-shaped scraper frame 41 can be firmly plugged into the drive shaft 3 and rotate as the drive shaft 3 rotates. When the drive shaft 3 starts to rotate under the drive of the motor, the U-shaped scraper frame 41 rotates within the drying box 1 through the secure connection with the drive shaft 3 through the socket 42. The rotating U-shaped scraper frame 41 has its two side edges in close contact with and scrapes the inner wall of the drying box 1, effectively scraping off the residue of the silica slurry adhering to the inner wall. At the same time, the scraper mechanism 4 is connected to the support ring 5 through an elastic connection, and when it descends, it abuts against the abutment 6, realizing the functions of automatically adjusting the position and cleaning the residue, thereby ensuring the cleanliness and drying efficiency of the drying box 1.

[0023] In the present invention, both sides of the inner wall of the insertion hole 42 are fixedly connected to the limit strips 43, and the outer wall of the driving shaft 3 is vertically provided with a slide groove 31 that matches the limit strip 43. The sliding of the limit strip 43 in the slide groove 31 ensures the stability of the U-shaped scraper frame 41 during the rotation process, avoids the problem of uneven scraping or damage to the inner wall of the drying box 1 due to shaking or deviation, and at the same time, prevents the U-shaped scraper frame 41 from slipping when it abuts against the abutment 6.

[0024] In the present invention, the abutment 6 includes a connecting ring 61 installed in the drying box 1, and a plurality of abutment blocks 62 are installed in the connecting ring 61. Both sides of the bottom of the U-shaped scraper frame 41 are fixedly connected with abutment blocks 44 that abut against the abutment blocks 62. When the scraper mechanism 4 descends to a certain position under the gravity of the silica material, the abutment blocks 44 at the bottom will collide with the abutment blocks 62 when the U-shaped scraper frame 41 rotates, forcing the U-shaped scraper frame 41 to rise and fall back and forth. The vibration generated by the lifting and lowering disperses and shakes off the silica residue accumulated on the U-shaped scraper frame 41, so that it can be dried in time to avoid excessive accumulation of material.

[0025] In the present invention, a U-shaped scraper frame 41 is provided with a plurality of through-holes 45 at its bottom. Guide bars 46 are fixed to each side of the U-shaped scraper frame 41, each of which is provided with a row of vertical diverter grooves 47. As the U-shaped scraper frame 41 rotates and rises and falls under the drive shaft 3, the through-holes 45 at its bottom allow material to pass smoothly, reducing accumulation. Simultaneously, the diverter grooves 47 on the guide bar 46 further disperse and guide the material, ensuring uniform distribution within the drying oven 1. This not only improves scraping efficiency but also optimizes the drying process, allowing the concentrated silica slurry to be more evenly exposed to the hot air, thereby improving the drying effect and product quality.

[0026] In the present invention, adjusting scrapers 48 are respectively installed on both sides of the U-shaped scraper frame 41, and a bracket 49 that passes through the U-shaped scraper frame 41 is fixedly connected to one side of the adjusting scraper frame 48. An adjusting bolt 410 that is threadedly connected to the bracket 49 is installed on the inner wall of the U-shaped scraper frame 41. Before drying, when it is necessary to adjust the scraping force or position between the adjusting scraper 48 and the inner wall of the drying box 1, it can be achieved by rotating the adjusting bolt 410. The rotation of the adjusting bolt 410 will push or pull the bracket 49 and the adjusting scraper 48 connected thereto, thereby changing the contact state and scraping force between the adjusting scraper 48 and the inner wall of the drying box 1, thereby improving the adaptability and flexibility of the scraping mechanism 4, ensuring that the best scraping effect can be achieved for silica of different concentrations, and further improving the drying efficiency and product quality.

[0027] The thick slurry is evenly sprayed in the drying box 1 through the sprayer 2, and the driving shaft 3 is driven to rotate by an external motor, driving the U-shaped scraper mechanism 4 located in the middle thereof to scrape along the inner wall of the drying box 1 to remove attached materials. The scraper mechanism 4 is elastically connected to the support ring 5 below by a top spring 51. During normal operation, the top spring 51 keeps the scraper mechanism 4 from contacting the abutment 6. If too much silica adheres to the scraper mechanism 4, resulting in an increase in weight, it will fall under the action of gravity and cooperate with the abutment 6, generating up and down vibrations, thereby dispersing the attached silica and achieving the effect of secondary drying.

[0028] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for spray drying a silicon dioxide slurry, comprising a drying oven (1), characterized in that: A sprayer (2) is installed on one side of the top of the drying box (1), a driving shaft (3) is installed in the drying box (1), a scraping mechanism (4) is installed on the driving shaft (3), both sides of the scraping mechanism (4) are in contact with the inner wall of the drying box (1), a supporting ring (5) is installed on the driving shaft (3) below the scraping mechanism (4), the scraping mechanism (4) and the supporting ring (5) are elastically connected, an abutment (6) is installed on the inner wall of the drying box (1), the abutment (6) is located below the scraping mechanism (4), and when the scraping mechanism (4) descends, the scraping mechanism (4) and the abutment (6) abut and cooperate.

2. The silicon dioxide concentrated slurry spray drying processing device according to claim 1, characterized in that: The scraper mechanism (4) comprises a U-shaped scraper frame (41) plugged into the driving shaft (3), and a socket (42) for the driving shaft (3) to pass through is provided on the U-shaped scraper frame (41).

3. The silicon dioxide concentrated slurry spray drying processing device according to claim 2, characterized in that: Limiting strips (43) are fixedly connected to both sides of the inner wall of the insertion hole (42), and a sliding groove (31) matching the limiting strips (43) is vertically opened on the outer wall of the driving shaft (3).

4. The silicon dioxide concentrated slurry spray drying processing device according to claim 2, characterized in that: The abutment member (6) comprises a connecting ring (61) installed in the drying box (1), a plurality of abutment blocks (62) are installed in the connecting ring (61), and pressing blocks (44) abutting against the abutment blocks (62) are fixedly connected to both sides of the bottom of the U-shaped scraper frame (41).

5. The silicon dioxide slurry spray drying processing device according to claim 2, characterized in that: The bottom of the U-shaped scraper frame (41) is provided with a plurality of through holes (45), and two sides of the U-shaped scraper frame (41) are respectively fixed with guide bars (46), and a row of diversion grooves (47) are vertically provided on the guide bars (46).

6. The silicon dioxide concentrated slurry spray drying processing device according to claim 2, characterized in that: Adjusting scraper bars (48) are respectively installed on both sides of the U-shaped scraper frame (41); one side of the adjusting scraper bar (48) is fixedly connected to a bracket (49) that passes through the U-shaped scraper frame (41); and an adjusting bolt (410) threadedly connected to the bracket (49) is installed on the inner wall of the U-shaped scraper frame (41).

Images