Vacuum box alkali removal device for alkali filter

Abstract

The utility model relates to alkali removal device technical field, concretely is alkali removal device of vacuum box of alkali filter, including vacuum box, still include the alkali removal device who sets up in the vacuum box, the alkali removal device includes scraper and sets up a plurality of acid liquid spray pipe on the scraper, the acid liquid spray pipe is used to spray acid liquid to the vacuum box inner wall, the scraper is used for scraping the crystallization alkali after being neutralized in the vacuum box inner wall by acid liquid, the vacuum box one side bottom is equipped with the cinder outlet, the cinder outlet outside is equipped with the apron through the bolt fixed, the alkali removal device still includes the support frame, the support frame middle part is hollow, is used for providing the passageway for the alkali cake in the vacuum box, the utility model discloses through setting booster pump pumps out the acid liquid in the support frame, and sprays from the acid liquid spray pipe to the crystallization alkali on the vacuum box inner wall, and the neutralization reaction happens with the crystallization alkali, makes it soften, until forms the solution, the electric cylinder pushes the alkali removal device and moves in the vacuum box, and the scraper will be neutralized after the crystallization alkali and scrape from the vacuum box inner wall.

Description

Technical Field

[0001] This utility model relates to the technical field of alkali removal devices, and in particular to a vacuum box alkali removal device for an alkali filter. Background Technology

[0002] The two vacuum boxes near the drive roller end of the belt filter press experience blockages. As the belt moves, the moisture in the filter cake gradually decreases. Upon reaching the discharge end, the reduced filtrate, lower temperature, and decreased air volume prevent effective flushing inside the vacuum boxes, leading to internal clogging. This blockage affects the normal operation of the filter press. Currently, the two vacuum boxes at the tail end need cleaning every 6-7 days. Cleaning the internal blockages is very inconvenient, requiring the entire vacuum box to be lowered for cleaning, which is time-consuming and labor-intensive. Utility Model Content

[0003] The main purpose of this invention is to provide a vacuum box alkali removal device for an alkaline filter to solve the problems raised in related technologies.

[0004] To achieve the above objectives, according to one aspect of the present invention, a vacuum box alkali removal device for an alkaline filter is provided, comprising a vacuum box and an alkali removal device disposed within the vacuum box. The alkali removal device includes a scraper and a plurality of acid spray pipes disposed on the scraper. The acid spray pipes are used to spray acid onto the inner wall of the vacuum box, and the scraper is used to scrape off the crystalline alkali that has been neutralized by the acid onto the inner wall of the vacuum box.

[0005] Furthermore, a slag outlet is provided at the bottom of one side of the vacuum box, and a cover plate is fixed to the outside of the slag outlet by bolts.

[0006] Furthermore, the alkali removal device also includes a support frame with a hollowed-out middle section to provide a channel for the alkali cake inside the vacuum box.

[0007] Furthermore, the scraper is fixedly disposed around the outer ring of the support frame, and the outer end of the scraper is in contact with the inner wall of the vacuum box.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] This invention uses a booster pump to pump out the acid from the support frame and spray it from the acid spray pipe onto the crystalline alkali on the inner wall of the vacuum box, where it undergoes a neutralization reaction to soften the crystalline alkali until it forms a solution. An electric cylinder drives the alkali removal device to move inside the vacuum box, and a scraper removes the neutralized crystalline alkali from the inner wall of the vacuum box. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall vacuum box of this utility model;

[0011] Figure 2 This is a schematic diagram showing the location of the alkali removal device of this utility model;

[0012] Figure 3 This is a schematic diagram of the overall alkali removal device of this utility model.

[0013] Figure label:

[0014] 1. Vacuum box; 2. Cover plate; 3. Electric cylinder; 4. Alkali removal device; 5. Support frame; 6. Scraper; 7. Acid spray pipe. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] This embodiment provides a vacuum box alkali removal device for an alkaline filter, including a vacuum box 1, such as... Figure 2 As shown, it also includes an alkali removal device 4 installed inside the vacuum box 1. The alkali removal device 4 includes a scraper 6 and several acid spray pipes 7 installed on the scraper 6. The acid spray pipes 7 are used to spray acid onto the inner wall of the vacuum box 1, and the scraper 6 is used to scrape off the crystalline alkali that has been neutralized by the acid on the inner wall of the vacuum box 1. Inclined acid spray pipes 7 are provided on both sides of the scraper 6. When the alkali removal device 4 moves back and forth, it can dissolve the crystalline alkali before the scraper 6 scrapes it, making it easier for the scraper 6 to scrape it. The acid spray pipes 7 first neutralize the crystalline alkali, and then the scraper 6 scrapes it off. Two electric cylinders 3 are fixedly and symmetrically installed inside the vacuum box 1. The two electric cylinders 3 are both located at the same end of the vacuum box 1 and are located on the left and right sides of the support frame 5, respectively, so that the alkali removal device 4 is subjected to uniform force and prevents it from tilting during movement. The telescopic rod of the electric cylinder 3 is fixedly connected to the support frame 5 and is used to drive the alkali removal device 4 to move back and forth.

[0017] like Figure 1 As shown, the vacuum box 1 has two slag outlets on one side of the bottom, and a cover plate 2 is fixed to the outside of the slag outlets by bolts. A sealing strip is provided between the cover plate 2 and the slag outlet to prevent alkali leakage. The sealing strip is made of fluororubber, which is resistant to strong alkali and high temperature, ensuring the sealing performance of the cover plate 2.

[0018] like Figure 3 As shown, the alkali removal device 4 also includes a support frame 5, which has a hollow center to provide a channel for the alkali cake inside the vacuum box 1. The support frame 5 is a hollow frame, and the hollow interior contains a medium-strong acid solution. In this embodiment, phosphoric acid is preferred because it has weak corrosiveness and causes less corrosion to the vacuum box 1 when neutralizing crystalline alkali. A booster pump is installed inside the support frame 5 to pump out the acid solution.

[0019] The scraper 6 is fixedly mounted on the outer ring of the support frame 5, and the outer end of the scraper 6 is in contact with the inner wall of the vacuum box 1. The scraper 6 is inclined to facilitate the scraping off of crystalline alkali from the inner wall of the vacuum box 1.

[0020] Start the booster pump inside the support frame 5. The booster pump pumps out the acid solution inside the support frame 5 and sprays it from the acid spray pipe 7 onto the crystalline alkali on the inner wall of the vacuum box 1. The acid solution reacts with the crystalline alkali to neutralize it and soften it until a solution is formed. Start the electric cylinder 3. The electric cylinder 3 pushes the alkali removal device 4 to move inside the vacuum box 1. The scraper 6 scrapes the neutralized crystalline alkali from the inner wall of the vacuum box 1. After all the crystalline alkali has been scraped off, open the cover plate 2 and discharge the neutralized solution and precipitate from the slag outlet. Then close the cover plate 2.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An alkaline filter vacuum box alkali removal device, comprising a vacuum box (1), characterized in that, It also includes an alkali removal device (4) installed in the vacuum box (1). The alkali removal device (4) includes a scraper (6) and a plurality of acid spray pipes (7) installed on the scraper (6). The acid spray pipes (7) are used to spray acid onto the inner wall of the vacuum box (1). The scraper (6) is used to scrape off the crystalline alkali that has been neutralized by the acid on the inner wall of the vacuum box (1).

2. The alkaline filter vacuum box alkali removal device according to claim 1, characterized in that, The vacuum box (1) has a slag outlet on one side of the bottom, and a cover plate (2) is fixed to the outside of the slag outlet by bolts.

3. The alkaline filter vacuum box alkali removal device according to claim 1, characterized in that, The alkali removal device (4) also includes a support frame (5), which has a hollow center to provide a channel for the alkali cake in the vacuum box (1).

4. The alkaline filter vacuum box alkali removal device according to claim 3, characterized in that, The scraper (6) is fixedly installed around the outer ring of the support frame (5), and the outer end of the scraper (6) is in contact with the inner wall of the vacuum box (1).

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