Vacuum filtration system for strontium slag

Abstract

The utility model discloses a strontium slag vacuum suction filtration system which is characterized by comprising a machine frame, a suction filtration belt which moves horizontally is arranged on the machine frame, a filter cloth belt is tightly attached to the upper portion of the suction filtration belt, the filter cloth belt and the suction filtration belt move synchronously, a strontium slag uniform distributor is arranged above the filter cloth belt, and the strontium slag uniform distributor is arranged on the machine frame. The strontium slag uniform distributor is connected with a spiral feeding pipe, a negative pressure box is tightly attached to the lower portion of the suction filtration belt, a plurality of liquid discharging pipes are arranged at the bottom of the negative pressure box, a plurality of negative pressure suction pipes are connected to the two sides of the upper portion of the negative pressure box, and at least two rows of suction holes corresponding to the negative pressure box are formed in the middle of the suction filtration belt in the width direction. The suction filtration belt is provided with confluence grooves extending in the width direction, the confluence grooves are arranged at intervals in the extending direction of the suction filtration belt, and the suction holes are located in the groove bottoms of the confluence grooves. The automatic suction filtration device has the beneficial effects of simple structure, automatic suction filtration, high filtration efficiency, good filtration effect and reduction of waste of strontium element.

Description

TECHNICAL FIELD

[0001] The utility model relates to strontium salt processing equipment field, concretely relates to a strontium slag vacuum filtration system. BACKGROUND

[0002] China has abundant strontium ore resources, especially lapis lazuli ore accounts for more than 50% of the total reserves in the world. Lapis lazuli ore is the main raw material for producing strontium carbonate, and the produced strontium carbonate is an important chemical raw material, which is widely used in color display tube, magnetic material, ceramic and other industries. With the rapid development of domestic and foreign electronic industry, the demand for strontium carbonate increases accordingly.

[0003] In the prior art, lapis lazuli is mainly used to prepare industrial-grade strontium carbonate through the process of high-temperature roasting-carbon reduction-water leaching. This production process is simple and has low production cost, but there is still a large amount of leaching liquid remaining in the strontium slag after leaching and slagging, which will pollute the environment and cause raw material waste if directly treated as slag. The strontium slag after leaching process is in the form of slurry, and the efficiency of conventional filtration method is very low, so it is necessary to design a device specially for filtering the strontium slag after leaching. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model provides a strontium slag vacuum filtration system, which has simple structure, good filtering effect on strontium slag and greatly improved filtering efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A strontium slag vacuum filtration system, characterized by comprising a rack, a horizontally movable filtration belt is arranged on the rack, a filter cloth belt is tightly arranged above the filtration belt, the filter cloth belt moves synchronously with the filtration belt, a strontium slag distributor is arranged above the filter cloth belt, a spiral feeding pipe is connected to the strontium slag distributor, a negative pressure tank is tightly arranged below the filtration belt, a plurality of drainage pipes are arranged at the bottom of the negative pressure tank, a plurality of negative pressure suction pipes are connected to the two sides of the upper part of the negative pressure tank, at least two rows of suction holes corresponding to the negative pressure tank are arranged in the middle of the filtration belt along the width direction, the filtration belt has a width direction extending flow collection groove, the flow collection grooves are arranged at intervals along the extension direction of the filtration belt, and the suction holes are located at the groove bottoms of the flow collection grooves.

[0007] Further, a scraping plate is arranged on one side of the strontium slag distributor in the movement direction of the filtration belt, pin shafts are connected to the upper parts of the two ends of the scraping plate and the rack, the middle part of the scraping plate is connected to the rack through a compression spring, and the lower end of the scraping plate is kept a predetermined distance from the upper surface of the filter cloth belt.

[0008] Further, driving rollers and driven rollers are arranged on the frame, and the filter belt is wound around the driving rollers and the driven rollers, wherein the driving rollers are in the shape of a waist drum with the diameter of the middle part being smaller than the diameter of the two ends.

[0009] Further, the length of the filter cloth belt is greater than the length of the filter belt, and the upper part of the filter cloth belt is close to the upper surface of the filter belt, and the lower part of the filter cloth belt is separated from the filter belt by a plurality of tension rollers which are rotatably arranged on the frame.

[0010] Further, a slag receiving hopper is arranged at the lower part of the rear end of the frame, a slag scraping plate is arranged above the slag receiving hopper, the upper part of the slag scraping plate is close to the filter cloth belt, and the lower part of the slag scraping plate is hingedly connected to the frame, and a scraping plate fitting degree adjusting device is further arranged on the frame.

[0011] Further, the scraping plate fitting degree adjusting device comprises a connecting block arranged at the end of the slag scraping plate, and an adjusting bolt which is hingedly connected to the frame at one end and passes through the connecting block at the other end, and an adjusting nut is arranged on the adjusting bolt, and the fitting degree of the slag scraping plate 13 and the filter cloth belt can be adjusted by rotating the adjusting nut.

[0012] The strontium slag vacuum filter system has the advantages of simple structure, automatic filtration, high filtration efficiency, good filtration effect, and reduced waste of strontium elements. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the strontium slag vacuum filter system;

[0014] Figure 2 is a sectional view of the negative pressure box and the filter belt of the strontium slag vacuum filter system; DETAILED DESCRIPTION

[0015] The strontium slag vacuum filter system will be further described in detail below with reference to specific embodiments and the accompanying drawings.

[0016] A strontium slag vacuum filter system as shown in Figures 1-2 The strontium slag vacuum filter system comprises a frame 1, a horizontally movable filter belt 2 arranged on the frame 1, driving rollers 9 and driven rollers 10 arranged on the frame 1, and the filter belt 2 wound around the driving rollers 9 and the driven rollers 10, wherein the driving rollers are in the shape of a waist drum with the diameter of the middle part being smaller than the diameter of the two ends. Figure 1The right side is shown in operation. A filter cloth belt 3 is provided closely above the filtration belt 2 for filtering strontium slag. The filter cloth belt 3 moves synchronously with the filtration belt 2. A strontium slag distributor 4 is provided above the filter cloth belt 3, and a spiral feeding pipe 5 is connected to the strontium slag distributor 4. The strontium slag distributor 4 is used to distribute the strontium slag on the filter cloth belt 3. A negative pressure box 6 is provided closely below the filtration belt 2, and a plurality of drainage pipes 7 are provided at the bottom of the negative pressure box 6. The plurality of drainage pipes 7 are connected to the filtrate collection tank for further processing. A plurality of negative pressure exhaust pipes 8 are connected to both sides of the upper part of the negative pressure box 6. The plurality of negative pressure exhaust pipes 8 converge into an exhaust main pipe and are connected to an exhaust pump. In order to form a negative pressure in the negative pressure box 6, the lower end of the drain pipe 7 of this embodiment extends below the liquid level of the filtrate collection tank. Here, it is necessary to use the hydraulic pressure difference generated by the high drop to close the drain pipe 7 to prevent the drain pipe 7 from being connected to the atmosphere during exhaust.

[0017] To facilitate the rapid collection of liquid seeping from beneath the filter cloth belt 3 into the negative pressure tank 6, the filter belt 2 of this embodiment is provided with at least two rows of suction holes 20 along its central width, corresponding to the negative pressure tank 6. These multiple suction holes create suction on the bottom surface of the filter cloth belt 3. The filter belt 2 is provided with confluence grooves 21 extending in its width. These confluence grooves 21 are spaced apart along the belt's extension, resulting in a wavy longitudinal cross-section of the filter belt 2. The suction holes 20 are located at the bottom of the confluence grooves 21.

[0018] In order to ensure that the strontium slag is evenly distributed on the filter cloth belt 3, a scraping plate 14 is provided on the side of the strontium slag distributor 4 in the direction of movement of the filter belt 2 in this embodiment. The upper pins at both ends of the scraping plate 14 are connected to the frame 1, and the middle part of the scraping plate 14 is connected to the frame 1 through a compression spring 15. The lower end of the scraping plate 14 maintains a predetermined distance from the upper surface of the filter cloth belt 3, and the basic thickness of the strontium slag distributed on the filter cloth belt 3 after passing through the scraping plate 14 is consistent through the height limit.

[0019] In order to further enable the liquid on the filtration belt 2 to flow quickly to the central suction hole 20, the driving roller 9 of this embodiment is in the shape of a waist drum with its diameter decreasing from both ends to the middle, so that the middle of the filtration belt 2 is slightly concave downward to facilitate the gathering of the filtrate.

[0020] In order to maintain good air and water permeability of the filter cloth belt 3, the length of the filter cloth belt 3 of this embodiment is greater than that of the suction filter belt 2, and the upper part of the filter cloth belt 3 is close to the upper surface of the suction filter belt 2, and the lower part of the filter cloth belt 3 is separated from the suction filter belt 2 by a plurality of tensioning rollers 11. The tensioning rollers 11 are rotatably set on the bracket 1. This structure enables the lower filter cloth belt 3 to be dried to a certain extent, thereby ensuring its good filtering performance and increasing the service life of the filter cloth belt.

[0021] The lower part of the rear end of the frame 1 is provided with a slag receiving hopper 12, and the upper part of the slag receiving hopper 12 is provided with a slag scraping plate 13, the upper part of the slag scraping plate 13 is tightly attached to the filter cloth belt 3, and the lower part of the slag scraping plate 13 is hingedly connected to the frame 1, and the frame 1 is further provided with a scraping plate adhesion adjusting device. The scraping plate adhesion adjusting device comprises a connecting block 131 arranged at the end of the slag scraping plate 13, and an adjusting bolt 132 hingedly connected to the frame 1 at one end, the other end of the adjusting bolt 132 penetrates through the connecting block 131, and an adjusting nut 133 is arranged on the adjusting bolt 132 in a matched mode, and the adhesion of the slag scraping plate 13 and the filter cloth belt 3 can be adjusted by rotating the adjusting nut 133. The filter residue on the filter cloth belt 3 is completely removed by the action of the slag scraping plate 13, so as to ensure the good filtering performance of the filter cloth belt.

[0022] The above describes the technical solutions provided by the embodiments of the present application in detail, and the principles and implementation manners of the embodiments of the present application are described by applying specific examples. The above description of the embodiments is only applicable to helping understand the principles of the embodiments of the present application. Meanwhile, for the general skilled in the art, the embodiments of the present application will have changes in the specific implementation manners and application ranges, and the content of the present description should not be understood as a limitation of the present application.

Claims

1. A strontium slag vacuum filtration system, characterized by: The invention comprises a frame (1), wherein a horizontally movable suction filter belt (2) is provided on the frame (1), a filter cloth belt (3) is closely provided above the suction filter belt (2), the filter cloth belt (3) and the suction filter belt (2) move synchronously, a strontium slag uniform distributor (4) is provided above the filter cloth belt (3), a spiral feed pipe (5) is connected to the strontium slag uniform distributor (4), a negative pressure box (6) is closely provided below the suction filter belt (2), and the bottom of the negative pressure box (6) is provided with a A plurality of liquid discharge pipes (7) are arranged, a plurality of negative pressure exhaust pipes (8) are connected to both sides of the upper portion of the negative pressure box (6), at least two rows of suction holes (20) corresponding to the negative pressure box (6) are arranged in the middle portion of the filter belt (2) along the width direction, the filter belt (2) has a confluence groove (21) extending in the width direction, the confluence grooves (21) are arranged at intervals along the extension direction of the filter belt (2), and the suction holes (20) are located at the bottom of the confluence groove (21).

2. A strontium slag vacuum filtration system according to claim 1, characterized in that: A scraping plate (14) is provided on one side of the strontium slag distributor (4) in the direction of movement of the suction filter belt (2), the upper pins at both ends of the scraping plate (14) are connected to the frame (1), the middle of the scraping plate (14) is connected to the frame (1) via a compression spring (15), and the lower end of the scraping plate (14) maintains a predetermined distance from the upper surface of the filter cloth belt (3).

3. A strontium slag vacuum filtration system according to claim 1, characterized in that: A driving roller (9) and a driven roller (10) are provided on the frame (1), and the filtration belt (2) is wound around the driving roller (9) and the driven roller (10), wherein the driving roller (9) is in a waist drum shape with its diameter decreasing from both ends to the middle.

4. A strontium slag vacuum filtration system according to claim 1, characterized in that: The length of the filter cloth belt (3) is greater than that of the suction filter belt (2), and the upper portion of the filter cloth belt (3) is in close contact with the upper surface of the suction filter belt (2), and the lower portion of the filter cloth belt (3) is separated from the suction filter belt (2) by a plurality of tensioning rollers (11), and the tensioning rollers (11) are rotatably arranged on the frame (1).

5. The strontium slag vacuum filtration system according to claim 1, characterized in that: A slag receiving bucket (12) is provided at the lower rear end of the frame (1), and a slag scraping plate (13) is provided above the slag receiving bucket (12). The upper portion of the slag scraping plate (13) is tightly attached to the filter cloth belt (3), and the lower ends are hinged to the frame (1). A scraper contact adjustment device is also provided on the frame (1).

6. A strontium slag vacuum filtration system according to claim 5, characterized in that: The scraper blade fit adjustment device comprises a connecting block (131) provided at the end of the scraper blade (13), an adjusting bolt (132) one end of which is hinged on the frame (1), the other end of the adjusting bolt (132) passing through the connecting block (131), and an adjusting nut (133) provided on the adjusting bolt (132). The fit between the scraper blade (13) and the filter cloth belt (3) can be adjusted by rotating the adjusting nut (133).

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