Graded screening device for sodium pyrosulfite

Abstract

The utility model provides a sodium pyrosulfite grading screening device which comprises a box body, a feeding port is formed in the top of the box body, at least two stages of screen cloth and scraping assemblies corresponding to the screen cloth are arranged in the box body, each stage of screen cloth is detachably connected to a screen cloth installation base, and the scraping assemblies are arranged on the screen cloth installation base. The screen installation bases are arranged on the two opposite wall faces of the box body, a vibration assembly is arranged in at least one screen installation base, the side wall of the box body is provided with coarse material outlets corresponding to all the stages of screens, the inner bottom face of the box body is provided with a discharging inclined face, and the outer side of the box body is provided with a fine material outlet connected with the discharging inclined face. The bottom face of the scraping assembly is attached to the screen and can do reciprocating motion towards the coarse material outlet. The sodium pyrosulfite classification screening device has a multi-stage vibration screening function, is better in screening effect and can meet the screening requirements of different products.

Description

Technical Field

[0001] The utility model relates to the field of screening devices, in particular to a sodium metabisulfite grading and screening device. Background Art

[0002] Sodium metabisulfite is a white or yellow crystalline powder or small crystals. It is used in the pharmaceutical industry to purify chloroform, phenylpropylsulfone, and benzaldehyde; in the rubber industry as a coagulant; in the printing and dyeing industry as a dechlorinating agent after cotton bleaching, a cotton scouring aid, and a mordant in printing and dyeing; in the tanning industry, it is used to treat leather, making it soft, plump, and tough, with waterproof, flexural, and wear-resistant properties; in the chemical industry, it is used to produce hydroxyvanillin and hydroxylamine hydrochloride; and in the photographic industry, it is used as a developer. When sodium metabisulfite is sold, the acid-insoluble matter content must be ≤20 per 10g. Currently, screening equipment is typically used for this purpose.

[0003] Invention patent application CN 110697737 A discloses a high-efficiency drying device for sodium metabisulfite, comprising a box body, including a feed funnel, a pair of rollers, a filter screen fixedly arranged inside the box body close to the pair of rollers, a feeding device, a collection box, a distributor arranged directly below the collection box, a discharge plate arranged below the distributor, a discharge port, and a heating device; the feeding device includes a central axis that passes through the interior of the box body and is parallel to the pair of rollers, a sliding plate, and an elastic limiter; the sliding plate includes a descending end and an ascending end, a through hole is provided near the ascending end, and also includes a first inclined baffle.

[0004] Although the above invention patent application can realize the drying and screening of sodium metabisulfite, it only has one set of filter screens and cannot achieve finer screening. Moreover, the filter screens are not replaceable and cannot adapt to the screening requirements of different products. Utility Model Content

[0005] In order to make up for the deficiencies in the prior art, the utility model provides a sodium metabisulfite grading and screening device, which has a multi-stage vibration screening function, a better screening effect, and can adapt to the screening requirements of different products.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A sodium metabisulfite grading and screening device comprises a box body, a material inlet is provided at the top of the box body, at least two levels of screens and scraper assemblies corresponding to each level of the screens are provided in the box body, each level of the screens is detachably connected to a screen mounting seat, the screen mounting seats are provided on two opposite walls of the box body, at least one of the screen mounting seats is provided with a vibration assembly, the side walls of the box body are provided with coarse material outlets corresponding to each level of the screens, the bottom surface of the box body is provided with a discharge slope, and the outside of the box body is provided with a fine material outlet connected to the discharge slope; the bottom surface of the scraper assembly is in contact with the screen and can make reciprocating motion toward the coarse material outlet.

[0008] Furthermore, the scraper assembly includes a linear module, a cross bar and scraping bristles. The linear module is arranged on two opposite walls in the box, the cross bar is connected between the two linear modules, the scraping bristles are connected to the bottom of the cross bar, and the bottom of the scraping bristles is in contact with the screen.

[0009] Furthermore, the cross bar is detachably connected to the linear module.

[0010] Furthermore, the screen mounting seat is provided with an inner cavity, and a sliding hole is provided on the top facing the coarse material outlet. The inner cavity is provided with a spring and a sliding plate. The sliding plate is fixedly connected to the spring and one end extends out of the sliding hole; at least one inner cavity of the screen mounting seat is provided with the vibration component, and the vibration component is a cam motor. The cam motor pushes the sliding plate to reciprocate in the sliding hole; the two ends of the screen are respectively detachably connected to the corresponding sliding plates.

[0011] Furthermore, bolts are provided on the sliding plate, and connection holes corresponding to the bolts are provided on both sides of the screen.

[0012] Furthermore, handles are provided on both sides of the top surface of the screen.

[0013] Furthermore, the box body is provided with a detachable top cover, the feed port is provided on the top cover, and the inner cavity of the box body is funnel-shaped.

[0014] Furthermore, the inner cavity of the box is provided with a scraper assembly accommodating space protruding from the inclined wall surface.

[0015] Furthermore, the coarse material outlet is provided with an openable and closable gate.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The sodium metabisulfite grading and screening device of the present invention is provided with at least two levels of screens, and each level of the screen is equipped with a vibration component, which can realize multi-level vibration screening and has better and finer screening efficiency; moreover, the screen is detachable and can be replaced with screens of different specifications according to different needs to meet the screening requirements of different products; in addition, each level of the screen is also equipped with a scraping component, which can automatically push the coarse material out of the coarse material outlet after screening is completed, thereby effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a sodium metabisulfite grading and screening device of the present utility model.

[0019] Figure 2 It is a schematic diagram of the connection structure between the screen and the screen mounting seat of the present invention.

[0020] Among them: 1. Box body; 101, coarse material outlet; 102, discharge slope; 103, fine material outlet; 2. Top cover; 201, feed inlet; 3. Screen; 301, handle; 4. Scraper assembly; 401, linear module; 402, cross bar; 403, scraper; 5. Screen mounting seat; 501, sliding hole; 502, spring; 503, sliding plate; 504, bolt; 6. Vibration assembly. DETAILED DESCRIPTION

[0021] The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Example 1

[0023] like Figure 1 、 2 As shown, the apparatus comprises a housing 1 with a removable top cover 2 on top, which is provided with a feed inlet 201. Two levels of screens 3 and a corresponding scraper assembly 4 are located within the housing 1. Each level of screen 3 is removably connected to a screen mounting base 5, which is located on two opposing walls of the housing 1. One of the screen mounting bases 5 houses a vibration assembly 6. Of course, the number of screens can be three or more, and the vibration assembly can be located in both screen mounting bases.

[0024] The sidewall of the box 1 is provided with a coarse material outlet 101 corresponding to each level of the screen 3. The bottom surface of the box 1 is provided with a material discharge slope 102, and the outer side of the box 1 is provided with a fine material outlet 103 connected to the material discharge slope 102. The bottom surface of the scraper assembly 4 is in contact with the screen 3 and can make a reciprocating motion toward the coarse material outlet 101, which can push the material on the screen 3 to the coarse material outlet.

[0025] The scraper assembly 4 includes a linear module 401, a crossbar 402, and scraper bristles 403. The linear module 401 is located on two opposing walls within the housing 1. The crossbar 402 is connected between the two linear modules 401. The scraper bristles 403 are connected to the bottom of the crossbar 402, and the bottom of the scraper bristles 403 is in contact with the screen 3. The crossbar 402 and linear module 401 are detachably connected to facilitate replacement of the scraper bristles if they become worn.

[0026] The screen mounting base 5 has an inner cavity with a sliding hole 501 at its top, facing the coarse material outlet 101. This cavity houses a spring 502 and a sliding plate 503, which is fixedly connected to the spring 502 and has one end extending out of the sliding hole 503. A vibration assembly 6 is housed within the inner cavity of one of the screen mounting bases 5. This vibration assembly 6 is a cam motor that propels the sliding plate 503 to reciprocate within the sliding hole 501, thereby causing the screen to vibrate back and forth.

[0027] The ends of the screen 3 are detachably connected to corresponding sliding plates 503 for easy replacement. These detachable connections can be achieved through snap-fit ​​connections, pin connections, bolt connections, and other methods. Specifically, the sliding plates 503 are provided with bolts 504, and the screen 3 has connection holes corresponding to the bolts 504 on both sides. The screen 3 is placed on the bolts and then secured with nuts. Handles 301 are provided on both sides of the top surface of the screen 3 for easy removal during replacement.

[0028] The inner cavity of the box body 1 can be rectangular or funnel-shaped. The latter is preferred in this embodiment. This structure is convenient for the installation of the upper and lower screens and can also play a guiding role, allowing the material to flow to the next level faster.

[0029] The inner cavity of the box body 1 is provided with a scraper assembly accommodating space protruding from the inclined wall surface, and the scraper assembly stays there when not working to avoid affecting the installation of the screen. The coarse material outlet 101 is provided with an openable and closable gate, which can be a manual opening structure or an electric opening structure.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sodium metabisulfite grading and screening device, characterized in that: The utility model comprises a box body, wherein the top of the box body is provided with a material inlet, the box body is provided with at least two levels of screens and scraper assemblies corresponding to each level of the screens, the screens at each level are detachably connected to the screen mounting seat, the screen mounting seat is provided on two opposite walls of the box body, at least one of the screen mounting seats is provided with a vibration assembly, the side wall of the box body is provided with a coarse material outlet corresponding to each level of the screens, the bottom surface of the box body is provided with a discharge slope, and the outside of the box body is provided with a fine material outlet connected to the discharge slope; the bottom surface of the scraper assembly is in contact with the screen and can make reciprocating motion toward the coarse material outlet.

2. The sodium metabisulfite grading and screening device according to claim 1, wherein: The scraper assembly includes a linear module, a cross bar and scraping bristles. The linear module is arranged on two opposite walls of the box body, the cross bar is connected between the two linear modules, the scraping bristles are connected to the bottom of the cross bar, and the bottom of the scraping bristles is in contact with the screen.

3. The sodium metabisulfite grading and screening device according to claim 2, characterized in that: The cross bar is detachably connected to the linear module.

4. The sodium metabisulfite grading and screening device according to any one of claims 1 to 3, characterized in that: The screen mounting seat is provided with an inner cavity, and a sliding hole facing the coarse material outlet is provided on the top. The inner cavity is provided with a spring and a sliding plate. The sliding plate is fixedly connected to the spring and one end extends out of the sliding hole; at least one inner cavity of the screen mounting seat is provided with the vibration component, and the vibration component is a cam motor. The cam motor pushes the sliding plate to reciprocate in the sliding hole; the two ends of the screen are detachably connected to the corresponding sliding plates.

5. The sodium metabisulfite grading and screening device according to claim 4, characterized in that: Bolts are provided on the sliding plate, and connection holes corresponding to the bolts are provided on both sides of the screen.

6. The sodium metabisulfite grading and screening device according to claim 5, characterized in that: Handles are provided on both sides of the top surface of the screen.

7. The sodium metabisulfite grading and screening device according to claim 6, characterized in that: The box body is provided with a detachable top cover, the feed port is arranged on the top cover, and the inner cavity of the box body is funnel-shaped.

8. The sodium metabisulfite grading and screening device according to claim 7, characterized in that: The inner cavity of the box is provided with a scraper assembly accommodating space protruding from the inclined wall surface.

9. The sodium metabisulfite grading and screening device according to claim 8, characterized in that: The coarse material outlet is provided with an openable and closable gate.

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