Iron removal and purification device for silica sand

Abstract

The utility model belongs to the technical field of silica sand iron removal, specifically relates to a kind of silica sand iron removal purification device, including screening net, reaction box, purification tank and reagent tank;Vibration motor is equipped with in screening net outer side wall, adjustable support rod is connected through spring in the lower side of screening net end part, and the edge of screening net is provided with anti-blocking brush;First water pump is connected by first conveying pipe in the top side of reaction box, and stirring device is equipped in reaction box, and first, second liquid discharge port is equipped in the bottom of reaction box;Second water pump is connected by second conveying pipe in the first liquid discharge port, and purification tank is communicated in the water outlet of second water pump;Filter plate and heating tube are equipped in the inside of purification tank, reagent tank is connected by third conveying pipe in the bottom of purification tank, and concentration monitor and automatic liquid supplement valve are equipped in reagent tank;The utility model can accurately control dilute hydrochloric acid concentration, ensure that reaction is sufficient and avoid waste, realize reagent recycling, improve iron removal efficiency and environmental protection.

Description

Technical Field

[0001] This utility model belongs to the field of silicon sand iron removal technology, specifically relating to a silicon sand iron removal and purification device. Background Technology

[0002] Patent CN219823688U discloses a silica sand iron removal and purification device combining magnetic separation and acid washing. It achieves initial silica sand purification through vibrating sieving, magnetic adsorption of iron powder, and acid washing to remove iron oxides. However, this device has the following shortcomings: First, the concentration of dilute hydrochloric acid in the acid washing process is not specified, which can easily lead to incomplete reaction or silica sand corrosion, and the specific structure for acid purification and reuse is not disclosed. Second, the magnetic rods require machine shutdown for disassembly and cleaning, affecting production efficiency. Third, the fixed tilt angle of the sieving screen cannot adapt to the sieving requirements of silica sand with different particle sizes. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the existing technology, the present invention provides a silica sand iron removal and purification device to solve the problems in the background technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a silica sand iron removal and purification device, including a screening screen, a vibration motor is provided on the outer wall of the screening screen, the lower side of the end of the screening screen is fixedly connected to a telescopic rod by a spring, the telescopic rod is sleeved on the inner wall of a fixed rod, multiple sets of adjustment holes are opened on the side wall of the fixed rod, the telescopic rod is engaged with the adjustment holes by a positioning pin, a reaction box with a top opening is provided at the corresponding position on the lower side of the screening screen, a first conveying pipe for conveying reagents into the box is provided on one side of the top of the reaction box, the end of the first conveying pipe is fixedly connected to the outlet of a first water pump, a stirring device is provided inside the reaction box, a first drain port and a second drain port are provided at the bottom of the reaction box, the first drain port is fixedly connected to a second conveying pipe, the end of the second conveying pipe is connected to the inlet of a second water pump, the outlet of the second water pump is connected to the inner cavity of a purification tank, a filter plate is provided inside the purification tank, a drain port is provided at the bottom of the purification tank, the drain port is fixedly connected to one end of a third conveying pipe, and the other end of the third conveying pipe is connected to the inner cavity of a reagent tank.

[0005] Furthermore, the reagent container is equipped with a concentration monitor and an automatic replenishment valve, with the probe of the concentration monitor located inside the reagent container.

[0006] Furthermore, the third delivery pipe is equipped with a solenoid valve.

[0007] Furthermore, the screening mesh is arranged from left to right as a first screen, a second screen, and a third screen, with the mesh diameter gradually increasing. Anti-clogging brushes are provided on the edge of the screen, and the brushes are attached to the surface of the screen. When the vibration motor is working, it drives the brushes to vibrate synchronously. Crossed magnetic rods are installed on the inner wall of the screening mesh. A scraper ring and a drive cylinder are arranged along the length of the magnetic rods. The inner wall of the scraper ring is attached to the outer wall of the magnetic rods. The drive cylinder is fixed to the end of the screening mesh, and the piston rod of the drive cylinder is connected to the end of the scraper ring.

[0008] Furthermore, a microfiltration membrane is provided above the filter plate, and a heating tube is provided circumferentially on the inner wall of the purification tank.

[0009] Furthermore, the second drain outlet is a residue drain outlet, and its diameter is larger than that of the first drain outlet.

[0010] Furthermore, the stirring device includes a rotating shaft disposed inside the reaction chamber, with stirring paddles evenly connected to the rotating shaft, and a motor connected to the end of the rotating shaft.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] 1. The present invention features a concentration monitoring instrument and an automatic replenishment valve that precisely control the concentration of dilute hydrochloric acid, ensuring a complete reaction and avoiding waste, without the need for repeated parameter testing;

[0013] 2. The present invention features a purification tank that enables the recycling of dilute hydrochloric acid, reducing the cost of consumables. The double-layer drain outlet enables the separate treatment of acid and cleaning wastewater, which meets environmental protection requirements.

[0014] 3. In this utility model, the telescopic support column can adjust the screening angle, and together with the anti-clogging brush, it avoids the problem of clogging or insufficient screening of silica sand of different particle sizes. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a silica sand iron removal and purification device according to the present invention;

[0016] Figure 2 This is a three-dimensional structural schematic diagram (another perspective) of a silica sand iron removal and purification device according to the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the screening mesh of this utility model;

[0018] The reference numerals in the accompanying drawings include:

[0019] 1. Screening mesh; 101. Telescopic rod; 102. Fixed rod; 103. Magnetic rod; 104. Scraper ring; 105. Vibrating motor; 106. First conveying pipe; 107. First water pump; 2. Reaction tank; 201. First drain outlet; 202. Second conveying pipe; 203. Second water pump; 204. Second drain outlet; 3. Purification tank; 301. Third conveying pipe; 4. Reagent tank. Detailed Implementation

[0020] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0022] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1:

[0025] like Figure 1-3As shown, this utility model discloses a silica sand iron removal and purification device, including a screening screen 1. A vibration motor 105 is installed on the outer wall of the screening screen 1. The lower side of the end of the screening screen 1 is fixedly connected to a telescopic rod 101 by a spring. The telescopic rod 101 is sleeved on the inner wall of a fixed rod 102. Multiple sets of adjustment holes are opened on the side wall of the fixed rod 102. The telescopic rod 101 is engaged with the adjustment holes by a positioning pin, which allows the height of the screening screen 1 to be flexibly adjusted according to the silica sand particle size to adapt to different processing needs. A reaction box 2 with a top opening is provided at the corresponding position on the lower side of the screening screen 1. A first conveying pipe 1 for conveying reagents into the reaction box 2 is provided on one side of the top of the reaction box 2. 06. The end of the first conveying pipe 106 is fixedly connected to the outlet of the first water pump 107. The reaction tank 2 is equipped with a stirring device. The bottom of the reaction tank 2 is equipped with a first drain port 201 and a second drain port 204. The first drain port 201 is fixedly connected to the second conveying pipe 202. The end of the second conveying pipe 202 is connected to the inlet of the second water pump 203. The outlet of the second water pump 203 is connected to the inner cavity of the purification tank 3. The purification tank 3 is equipped with a filter plate. The bottom of the purification tank 3 is equipped with a drain port. The drain port is fixedly connected to one end of the third conveying pipe 301. The other end of the third conveying pipe 301 is connected to the inner cavity of the reagent tank 4.

[0026] The reagent tank 4 is equipped with a concentration monitor and an automatic replenishment valve. The probe of the concentration monitor is located inside the reagent tank 4. When the liquid concentration is detected to be too low (such as insufficient reagent content) or the liquid level is too low, the automatic replenishment valve opens to replenish a certain amount of clean water or reagent, maintain the stability of the liquid parameters in the reagent tank 4, and ensure the needs of subsequent recycling.

[0027] The third delivery pipe 301 is equipped with a solenoid valve, which can be automatically started and stopped according to the signal of the concentration monitor in the reagent tank 4. When the liquid concentration in the reagent tank 4 is detected to be excessive (such as excessive impurity content), the solenoid valve closes to prevent unqualified liquid from entering the reagent tank 4; when the concentration reaches the standard, the solenoid valve opens to realize the automatic recovery of compliant liquid.

[0028] The screening mesh 1 consists of a first screen, a second screen, and a third screen from left to right, with the mesh diameter gradually increasing. Anti-clogging brushes are provided at the edge of the screening mesh 1, and the brushes are attached to the surface of the screening mesh 1. When the vibration motor 105 is working, it drives the brushes to vibrate synchronously. Cross-arranged magnetic rods 103 are installed on the inner side wall of the screening mesh 1. A scraping ring 104 and a drive cylinder are arranged along the length of the magnetic rods 103. The inner wall of the scraping ring 104 is attached to the outer wall of the magnetic rods 103. The drive cylinder is fixed to the end of the screening mesh 1, and the piston rod of the drive cylinder is connected to the end of the scraping ring 104.

[0029] A microfiltration membrane is installed above the filter plate to intercept fine silica sand particles and iron compounds remaining in the liquid. The inner wall of the purification tank 3 is equipped with heating tubes around the perimeter to help reduce the viscosity of the liquid and increase the filtration speed, while avoiding the precipitation of impurities caused by low temperature.

[0030] The second drain port 204 is a residue drain port, and its diameter is larger than that of the first drain port 201, so as to facilitate the rapid discharge of solid residue generated by the reaction and avoid clogging the pipeline.

[0031] The stirring device includes a rotating shaft installed inside the reaction chamber 2, with stirring paddles evenly connected to the rotating shaft. A motor is connected to the end of the rotating shaft, and the motor drives the rotating shaft to rotate, causing the stirring paddles to quickly stir the silica sand and reagents, ensuring that the two are in full contact and avoiding iron residue caused by incomplete local reaction.

[0032] Working principle: Screening and preliminary iron removal: The silica sand to be treated is put into the screening screen 1, and the vibration motor 105 is started to drive the screening screen 1 to vibrate. At the same time, the anti-clogging brush on the edge of the screening screen 1 cleans the screen synchronously with the vibration to avoid clogging. During the screening process, the magnetic rods 103 arranged crosswise on the inner side wall of the screening screen 1 adsorb the iron powder in the silica sand. When the iron powder accumulates to a certain extent, the driving cylinder pushes the scraping ring 104 to move along the length of the magnetic rods 103 to scrape off the adsorbed iron powder, thus achieving preliminary iron removal and screening. The tilt angle of the screening screen 1 can be changed by adjusting the position of the telescopic rod 101 in the fixed rod 102 (using the positioning pin and the adjustment hole to lock together) to adapt to the processing needs of silica sand of different particle sizes.

[0033] Iron removal reaction: The sieved silica sand falls into the reaction tank 2 with the top opening below. The first water pump 107 delivers iron removal reagent (such as dilute hydrochloric acid) into the reaction tank 2 through the first delivery pipe 106. At the same time, the stirring device (motor-driven shaft drives the stirring paddle to rotate) in the reaction tank 2 is started to make the silica sand and reagent fully mix and react to remove iron oxides from the silica sand.

[0034] Solid-liquid separation and reagent recovery: After the reaction is completed, the first drain port 201 at the bottom of the reaction tank 2 (used to drain the acid) is opened, and the second water pump 203 transports the acid to the purification tank 3 through the second delivery pipe 202; the second drain port 204 is used to discharge the residue generated by the reaction; the filter plate in the purification tank 3 filters and purifies the acid, and the heating pipe on the inner wall of the purification tank 3 assists in the purification; the purified acid is transported to the reagent tank 4 for storage through the drain port and the third delivery pipe 301 (the pipe is equipped with a solenoid valve to control the on and off); the concentration monitor in the reagent tank 4 monitors the acid concentration in real time. When the concentration is lower than the set value, the automatic replenishment valve opens to replenish the reagent, realizing the recycling of the acid.

[0035] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software and methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all prior art in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A device for purifying silica sand from iron, comprising a screening grid (1), characterized in that: A vibration motor (105) is provided on the outer wall of the sieve screen (1). The lower side of the end of the sieve screen (1) is fixedly connected to the telescopic rod (101) by a spring. The telescopic rod (101) is sleeved on the inner wall of the fixed rod (102). Multiple sets of adjustment holes are opened on the side wall of the fixed rod (102). The telescopic rod (101) is engaged with the adjustment holes by a positioning pin. A reaction box (2) with a top opening is provided at the corresponding position on the lower side of the sieve screen (1). A first delivery pipe (106) for delivering reagents into the box is provided on one side of the top of the reaction box (2). The end of the first delivery pipe (106) is fixedly connected to the outlet end of the first water pump (107). The water inlet is connected to the inner cavity of the reagent tank (4); the reaction chamber (2) is equipped with a stirring device, and the bottom of the reaction chamber (2) is equipped with a first drain port (201) and a second drain port (204). The first drain port (201) is fixedly connected to the second delivery pipe (202), and the end of the second delivery pipe (202) is connected to the water inlet of the second water pump (203). The outlet of the second water pump (203) is connected to the inner cavity of the purification tank (3); the purification tank (3) is equipped with a filter plate, and the bottom of the purification tank (3) is equipped with a drain port. The drain port is fixedly connected to one end of the third delivery pipe (301), and the other end of the third delivery pipe (301) is connected to the inner cavity of the reagent tank (4).

2. A device for purifying silica sand from iron as claimed in claim 1, characterized in that: The reagent container (4) is equipped with a concentration monitor and an automatic replenishment valve. The probe of the concentration monitor is located inside the reagent container (4).

3. A device for purifying silica sand from iron as claimed in claim 1, wherein: The third delivery pipe (301) is equipped with a solenoid valve.

4. A device for purifying silica sand from iron as claimed in claim 1, wherein: The screening mesh (1) consists of a first screen, a second screen, and a third screen from left to right, with the mesh diameter gradually increasing. Anti-clogging brushes are provided on the edge of the screening mesh (1), and the brushes are attached to the surface of the screening mesh (1). When the vibration motor (105) is working, it drives the brushes to vibrate synchronously. Cross-arranged magnetic rods (103) are installed on the inner wall of the screening mesh (1). A scraper ring (104) and a drive cylinder are arranged along the length of the magnetic rod (103). The inner wall of the scraper ring (104) is attached to the outer wall of the magnetic rod (103). The drive cylinder is fixed to the end of the screening mesh (1), and the piston rod of the drive cylinder is connected to the end of the scraper ring (104).

5. A device for purifying silica sand from iron as claimed in claim 1, wherein: A microfiltration membrane is provided above the filter plate, and a heating tube is provided circumferentially on the inner wall of the purification tank (3).

6. A device for purifying silica sand from iron as claimed in claim 1, wherein: The second drain port (204) is a residue drain port, and its diameter is larger than that of the first drain port (201).

7. A device for purifying silica sand from iron as claimed in claim 1, wherein: The stirring device includes a rotating shaft installed inside the reaction chamber (2), with stirring paddles evenly connected to the rotating shaft, and a motor connected to the end of the rotating shaft.

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