Discharging mechanism of flat plate rotary table type vacuum filter

Abstract

The utility model discloses a flat plate rotary table type vacuum filter discharging mechanism which comprises a spiral discharger and a discharging hopper, the discharging hopper corresponds to the discharging end of the spiral discharger, the spiral discharger comprises a main shaft and a spiral blade, the lower portion of the spiral discharger is provided with a baffle, and the baffle is provided with a baffle. The baffle is parallel to the axis of the main shaft, the upper portion of the baffle makes sliding contact with the outer wall of the main shaft, the baffle is provided with a plurality of through grooves matched with the spiral blades, the two ends of the baffle penetrate through the side wall of the discharge hopper and the side wall of the inner ring of the flat plate respectively, and a silica gel scraper is arranged on the side wall of the baffle and makes contact with the flat plate filter cloth. The baffle and the silica gel scraper are arranged on the lower portion of the spiral discharger, the silica gel scraper is in contact with the filter cloth, the filter cloth cannot be damaged, residues can be pushed to the discharging hopper, residues left on the filter cloth are reduced, discharging is clean, residues on the spiral blades and the main shaft can be cleaned, and the using effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of separation and filtration, in particular to a flat disc rotary table type vacuum filter unloading mechanism. Background Art

[0002] In the process of alumina preparation, a flat disc turntable vacuum filter is used. The flat disc turntable vacuum filter generally adopts spiral unloading to discharge slag. The slag is sent to the slag discharge port through the spiral unloading. Since the unloading adopts spiral unloading, in order to avoid the unloading spiral directly scraping the filter cloth during unloading and causing damage to the filter cloth, the gap between the unloading spiral blade and the filter cloth must be 30-50mm, so the material is not discharged cleanly. After unloading, there is still 20mm-30mm wet aluminum hydroxide material on the filter cloth, and the spiral blades and the main shaft are seriously sticky and crusted.

[0003] The patent with authorization announcement number CN109731387A discloses a rotary vacuum filter auxiliary slag unloading device, including a spiral slag unloader and a slag unloading bucket. The slag unloading port of the spiral slag unloader is provided with a slag unloading bucket, and a slag unloading scraper is installed on the front wall of the slag unloading bucket. A reduction motor is also installed outside the front wall of the slag unloading bucket. The slag unloading scraper is driven by the reduction motor. It solves the problem of adhesion and accumulation of phosphogypsum slag at the slag unloading bucket port and uneven material discharge. However, the above-mentioned problem still exists, that is, there is still slag on the filter cloth that cannot be scraped off, and the unloading is not clean. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a flat disc turntable vacuum filter unloading mechanism, which can push the slag to the unloading hopper, reduce the slag remaining on the filter cloth, and unload thoroughly and cleanly. In addition, the slag on the spiral blades and the main shaft can be cleaned, and the use effect is remarkable, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flat turntable vacuum filter unloading mechanism, comprising a spiral unloader and a unloading hopper, the unloading hopper corresponds to the discharge end of the spiral unloader, the spiral unloader comprises a main shaft and spiral blades, a baffle is provided at the lower part of the spiral unloader, the baffle is arranged parallel to the main shaft axis, and the upper part of the baffle is in sliding contact with the outer wall of the main shaft, the baffle is provided with a plurality of through grooves adapted to the spiral blades, the two ends of the baffle respectively pass through the side wall of the unloading hopper and the side wall of the inner ring of the flat plate, the side wall of the baffle is provided with a silicone scraper, and the silicone scraper is in contact with the flat filter cloth.

[0006] Preferably, the side wall of the discharge hopper and the side wall of the inner ring of the flat plate are both provided with a limiting groove adapted to the baffle, a sealing ring is provided in the limiting groove, and the baffle and the sealing ring are slidably sealed.

[0007] Preferably, the silicone scraper is connected to the baffle plate via a plurality of bolt and nut groups, and both the silicone scraper and the baffle plate are provided with through holes for the bolt and nut groups to pass through.

[0008] Preferably, the silica gel scraper is located on the material-facing side of the baffle.

[0009] Preferably, the silicone scraper is provided with a plurality of grooves corresponding to the through grooves, and the width of the grooves is greater than the width of the through grooves.

[0010] Preferably, the gap between the lower end surface of the baffle and the flat filter cloth is 5-10 mm.

[0011] Compared with the prior art, the utility model has the following beneficial effects: by arranging a baffle and a silicone scraper at the lower part of the spiral discharger, the spiral blade of the spiral discharger rotates in the through groove of the baffle, so that the baffle and the silicone scraper can block the gap between the spiral blade and the filter cloth, and the silicone scraper contacts the filter cloth without damaging the filter cloth, that is, the spiral blade pushes the slag when rotating, and at the same time makes the baffle swing back and forth, so that the slag can be pushed to the discharge hopper, reducing the residual slag on the filter cloth, and the unloading is thorough and clean. In addition, the slag on the spiral blade and the main shaft can also be cleaned, and the use effect is remarkable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the local structure of the utility model.

[0014] In the figure: 1 spiral discharger, 1.1 main shaft, 1.2 spiral blade, 2 silicone scraper, 2.1 bolt and nut set, 2.2 groove, 3 baffle, 3.1 through groove, 4 discharge hopper. DETAILED DESCRIPTION

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0016] See also Figure 1-2The utility model provides a technical solution: a flat plate rotary table vacuum filter unloading mechanism, comprising a spiral unloader 1 and a unloading hopper 4, the unloading hopper 4 corresponds to the discharge end of the spiral unloader 1, the spiral unloader 1 comprises a main shaft 1.1 and a spiral blade 1.2, a baffle 3 is arranged at the lower part of the spiral unloader 1, the baffle 3 is arranged parallel to the axis of the main shaft 1.1, and the upper part of the baffle 3 is in sliding contact with the outer wall of the main shaft 1.1, the baffle 3 is provided with a plurality of through grooves 3.1 adapted to the spiral blade 1.2, the two ends of the baffle 3 respectively pass through the side wall of the unloading hopper 4 and the side wall of the inner ring of the flat plate, the side wall of the baffle 3 is provided with a silicone scraper 2, and the silicone scraper 2 is in contact with the flat plate filter cloth;

[0017] It can be understood that by arranging the baffle plate 3 at the lower part of the spiral discharger 1, the through groove 3.1 of the baffle plate 3 is adapted to the spiral blade 1.2, and the upper part of the baffle plate 3 is in sliding contact with the outer wall of the main shaft 1.1, so as to reduce the slag material flowing out from the gap between the baffle plate 3 and the main shaft 1.1 and the spiral blade 1.2, and the silicone scraper 2 is arranged at the lower part of the baffle plate 3, so that the baffle plate 3 and the silicone scraper 2 can block the gap between the spiral blade 1.2 and the filter cloth in the material-facing side stroke pushing area of ​​the spiral discharger 1, and the silicone scraper 2 contacts the filter cloth without damaging the filter cloth, that is, the spiral blade 1.2 pushes the slag material when rotating, so that the slag material can be pushed to the discharge hopper 4, and the slag material remaining on the filter cloth is reduced;

[0018] Furthermore, the side wall of the discharge hopper 4 and the side wall of the inner circle of the flat plate are provided with a limit groove adapted to the baffle 3. It should be noted that, since the spiral blade 1.2 is in a rotating state, it will reciprocate and circulate for a certain section of the spiral blade 1.2. When the spiral blade 1.2 rotates, it will push the baffle 3 to move, thereby causing the baffle 3 to reciprocate. Therefore, a limit groove is provided on the side wall of the discharge hopper 4 and the side wall of the inner circle of the flat plate. A sealing ring is provided in the limit groove. The baffle 3 and the sealing ring are slidably sealed. The baffle 3 slides in the sealing ring to reduce leakage.

[0019] Furthermore, the silicone scraper 2 is connected to the baffle 3 through a plurality of bolt and nut groups 2.1. Both the silicone scraper 2 and the baffle 3 are provided with through holes for the bolt and nut groups 2.1 to pass through. The silicone scraper 2 and the baffle 3 are connected by bolts, which is convenient for subsequent maintenance and replacement.

[0020] Furthermore, the silicone scraper 2 is located on the material-facing side of the baffle 3, that is, the silicone scraper 2 can be in good contact with the baffle 3 when scraping the material, thereby reducing material leakage. If it is set on the material-back side of the baffle 3, under the action of the slag, the silicone scraper 2 and the baffle 3 are subjected to the reaction force of the slag, and the silicone scraper 2 and the baffle 3 will separate, thereby leaking the material.

[0021] In addition, the silicone scraper 2 is provided with a plurality of grooves 2.2 corresponding to the through grooves 3.1, and the width of the grooves 2.2 is greater than the width of the through grooves 3.1, that is, the silicone scraper 2 will not interfere with the rotation of the spiral blade 1.2; the gap between the lower end surface of the baffle 3 and the flat filter cloth is 5-10mm.

[0022] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended to include all changes that fall within the meaning and scope of equivalent elements in the content of the present invention.

Claims

1. A flat plate rotary table vacuum filter unloading mechanism, comprising a spiral unloader (1) and a unloading hopper (4), characterized in that: The discharge hopper (4) corresponds to the discharge end of the spiral discharger (1). The spiral discharger (1) comprises a main shaft (1.1) and a spiral blade (1.2). A baffle (3) is provided at the bottom of the spiral discharger (1). The baffle (3) is arranged parallel to the axis of the main shaft (1.1), and the upper part of the baffle (3) is in sliding contact with the outer wall of the main shaft (1.1). The baffle (3) is provided with a plurality of through grooves (3.1) adapted to the spiral blade (1.2). The two ends of the baffle (3) respectively pass through the side wall of the discharge hopper (4) and the side wall of the inner ring of the flat plate. The side wall of the baffle (3) is provided with a silicone scraper (2), and the silicone scraper (2) is in contact with the flat plate filter cloth.

2. The flat plate rotary table vacuum filter unloading mechanism according to claim 1 is characterized in that: The side wall of the discharge hopper (4) and the side wall of the inner ring of the flat plate are both provided with a limiting groove adapted to the baffle plate (3), a sealing ring is provided in the limiting groove, and the baffle plate (3) and the sealing ring are slidably sealed.

3. The flat plate turntable vacuum filter unloading mechanism according to claim 1, characterized in that: The silicone scraper (2) is connected to the baffle (3) via a plurality of bolt and nut groups (2.1); both the silicone scraper (2) and the baffle (3) are provided with through holes for the bolt and nut groups (2.1) to pass through.

4. The flat plate rotary table vacuum filter unloading mechanism according to claim 1, characterized in that: The silica gel scraper (2) is located on the material-facing side of the baffle (3).

5. The flat plate turntable vacuum filter unloading mechanism according to claim 1, characterized in that: The silicone scraper (2) is provided with a plurality of grooves (2.2) corresponding to the through grooves (3.1), and the width of the grooves (2.2) is greater than the width of the through grooves (3.1).

6. The flat plate rotary table vacuum filter unloading mechanism according to claim 1, characterized in that: The gap between the lower end surface of the baffle (3) and the flat filter cloth is 5-10 mm.

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