A bottom discharge device of an automatic sedimentation scraper centrifuge

Abstract

The invention discloses an automatic sedimentation scraper unloading device for a centrifuge, comprising a pneumatic mechanism and a scraper mechanism, wherein the scraper mechanism is fixedly mounted on the pneumatic mechanism, and the scraper mechanism is connected with the pneumatic mechanism, and a lifting rod is driven to move by air pressure, so that the scraper mechanism can move up and down in a rotating drum of the centrifuge, and compared with manual scraper unloading, the device is safer and more efficient; a first scraper blade, a second scraper blade and a third scraper blade are arranged in a scraper assembly, and the length of the first scraper blade is less than that of the second scraper blade, and the length of the second scraper blade is less than that of the third scraper blade, so that the effect of grading treatment is achieved, and the unloading is more complete without any residual material; an elastic scraper fixing mechanism is arranged in the scraper assembly, and the first scraper blade, the second scraper blade and the third scraper blade are all installed in a scraper mounting groove through the elastic scraper fixing mechanism, so that the scraper blade is protected and the side wall of the rotating drum is not damaged by scraping.

Description

Technical Field

[0001] The invention belongs to the technical field of centrifuge equipment, and in particular relates to a bottom discharge device of an automatic sedimentation scraper centrifuge. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate components in a liquid and solid particles or a mixture of liquid and liquid. Centrifuges are mainly used to separate solid particles from liquid in a suspension, or to separate two immiscible liquids of different densities in an emulsion; they can also be used to remove liquid from wet solids, such as using a washing machine to spin dry wet clothes; special ultra-speed tubular separators can also separate gas mixtures of different densities; some sedimentation centrifuges can also classify solid particles by density or particle size, taking advantage of the different sedimentation speeds of solid particles of different densities or particle sizes in liquids. During the use of the centrifuge, the raw materials after solid-liquid separation will adhere to the side wall of the drum due to centrifugal force. Generally, the raw materials are scraped off the side wall by a manual scraper and then taken out from the lower discharge port, but the scraping is often incomplete, the work efficiency is low, and manual operation often has safety hazards. Summary of the invention

[0003] To overcome the deficiencies of the prior art, the present invention aims to provide a material discharging device for an automatic sedimentation scraper centrifuge, comprising a pneumatic mechanism and a scraper mechanism, wherein the scraper mechanism is fixedly mounted on the pneumatic mechanism, and the material discharging is thorough and the working efficiency is high.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The invention discloses a bottom discharge device of an automatic sedimentation scraper centrifuge, comprising a pneumatic mechanism and a scraper mechanism, wherein the scraper mechanism is fixedly mounted on the pneumatic mechanism, and is characterized in that the pneumatic mechanism comprises a pneumatic cylinder, a fixed mounting base and a lifting rod, wherein the lifting rod is movably mounted inside the pneumatic cylinder, a fixed mounting base is arranged at the bottom of the pneumatic cylinder, and the lifting rod is fixedly mounted on a centrifuge cover through the fixed mounting base; the scraper mechanism comprises a connecting assembly and a scraper assembly, wherein the connecting assembly comprises a sleeve and a scraper fixing block, wherein the sleeve is sleeved on the lifting rod, and the scraper fixing block is fixedly welded to the side of the sleeve, and the scraper assembly is provided with a first scraper blade, a second scraper blade and a third scraper blade, and the first scraper blade, the second scraper blade and the third scraper blade are all fixedly mounted on the scraper fixing block.

[0006] Furthermore, the pneumatic cylinder is provided with a gas nozzle connecting cover and a sealing connecting gas nozzle, the gas nozzle connecting cover is fixedly mounted on the upper end of the pneumatic cylinder, and the sealing connecting gas nozzle is fixedly mounted on the upper end surface of the gas nozzle connecting cover.

[0007] Furthermore, the lifting rod is provided with a threaded hole.

[0008] Furthermore, a bolt mounting hole is provided on the side of the sleeve, and is fixedly connected to the lifting rod via a hexagon socket bolt, and a rubber pad is provided on the inner wall of the sleeve.

[0009] Furthermore, the scraper fixing block is provided with a scraper installation groove, and a sealing ring is arranged at the notch of the scraper installation groove.

[0010] Furthermore, the first scraper blade, the second scraper blade and the third scraper blade are all made of high-strength steel, and the lower part is set to a curved structure. The length of the first scraper blade is smaller than the length of the second scraper blade, and the length of the second scraper blade is smaller than the length of the third scraper blade.

[0011] Furthermore, an elastic support rod is installed between the first scraper blade, the second scraper blade and the third scraper blade.

[0012] Furthermore, the scraper assembly is provided with an elastic scraper fixing mechanism, which includes a spring fixing block, a return spring and a fixing plate. The spring fixing block is fixedly mounted on the side wall of the scraper mounting groove, one end of the return spring is connected to the spring fixing block, and the other end is connected to the fixing plate. The first scraper blade, the second scraper blade and the third scraper blade are all installed in the scraper mounting groove through the elastic scraper fixing mechanism.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The automatic sedimentation scraper unloading device of the centrifuge connects the scraper mechanism with the pneumatic mechanism and uses air pressure to drive the lifting rod to move, so that the scraper mechanism can move up and down in the drum of the centrifuge. Compared with manual scraper unloading, it is safer and more efficient. At the same time, the pneumatic mechanism is more firmly fixed, so that the raw materials on the side wall of the drum can be cleaned more thoroughly.

[0015] 2. The unloading device of the automatic sedimentation scraper centrifuge achieves the effect of grading treatment by arranging the first scraper blade, the second scraper blade and the third scraper blade in the scraper assembly, and the length of the first scraper blade is smaller than the length of the second scraper blade, and the length of the second scraper blade is smaller than the length of the third scraper blade, so that the unloading is more complete and no residual material will remain.

[0016] 3. The bottom discharge device of the automatic sedimentation scraper centrifuge is provided with an elastic scraper fixing mechanism in the scraper assembly, and the first scraper blade, the second scraper blade and the third scraper blade are all installed in the scraper installation groove through the elastic scraper fixing mechanism, so that the scraper blade is protected and the side wall of the drum is not scratched. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a structural diagram of the pneumatic mechanism of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the scraper assembly of the present invention.

[0021] Figure 4 It is a side view of the scraper assembly of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the scraper fixing block and the elastic scraper fixing mechanism of the present invention.

[0023] In the figure: 1-pneumatic mechanism 11-pneumatic cylinder 111-air nozzle connecting cover 112-sealed connecting air nozzle 12-fixed mounting base 13-lifting rod 131-threaded hole 2-scraper mechanism 21-connecting assembly 211-sleeve 2111-bolt mounting hole 2112-hexagon socket bolt 2113-rubber pad 212-scraper fixing block 2121-scraper mounting groove 2122-sealing ring 22-scraper assembly 221-first scraper blade 222-second scraper blade 223-third scraper blade 224-elastic support rod 225-elastic scraper fixing mechanism 2251-spring fixing block 2252-return spring 2253-fixing plate. DETAILED DESCRIPTION

[0024] The technical solution of the invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the invention, not all of them. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0025] like Figure 1-5 As shown, an automatic sedimentation scraper centrifuge bottom discharge device comprises a pneumatic mechanism 1 and a scraper mechanism 2 , wherein the scraper mechanism 2 is fixedly mounted on the pneumatic mechanism 1 .

[0026] The pneumatic mechanism 1 includes a pneumatic cylinder 11, a fixed mounting base 12 and a lifting rod 13. The lifting rod 13 is movably mounted inside the pneumatic cylinder 11. The lifting rod 13 is provided with a threaded hole 131. The fixed mounting base 12 is arranged at the bottom of the pneumatic cylinder 11, and the pneumatic cylinder 11 is fixedly mounted on the centrifuge cover through the fixed mounting base 12. The pneumatic cylinder 11 is provided with a gas nozzle connecting cover 111 and a sealing connecting gas nozzle 112. The gas nozzle connecting cover 111 is fixedly mounted on the upper end of the pneumatic cylinder 11, and the sealing connecting gas nozzle 112 is fixedly arranged on the upper end surface of the gas nozzle connecting cover 111. By connecting the scraper mechanism 2 with the pneumatic mechanism 1, the lifting rod 13 is driven to move by air pressure, so that the scraper mechanism 2 can move up and down in the drum of the centrifuge. Compared with manual scraper unloading, it is safer and more efficient. At the same time, the pneumatic mechanism 1 is fixed more firmly, so that the raw materials on the side wall of the drum can be cleaned more thoroughly.

[0027] The scraper mechanism 2 includes a connecting component 21 and a scraper component 22. The connecting component 21 includes a sleeve 211 and a scraper fixing block 212. The sleeve 211 is sleeved on the lifting rod 13. The side of the sleeve 211 is provided with a bolt mounting hole 2111, and is fixedly connected to the lifting rod 13 by a hexagon socket bolt 2112. A rubber pad 2113 is provided on the inner side wall of the sleeve 211. The scraper fixing block 212 is fixedly welded to the side of the sleeve 211. The scraper fixing block 212 is provided with a scraper mounting groove 2121, and a sealing ring 2122 is provided at the notch of the scraper mounting groove 2121. The scraper component 22 is provided with a first The scraper blade 221, the second scraper blade 222 and the third scraper blade 223 are all fixedly mounted on the scraper fixing block 212. The first scraper blade 221, the second scraper blade 222 and the third scraper blade 223 are all made of high-strength steel, and the lower part is set to a curved surface structure. The length of the first scraper blade 221 is less than the length of the second scraper blade 222, the length of the second scraper blade 222 is less than the length of the third scraper blade 223, and an elastic support is installed between the first scraper blade 221, the second scraper blade 222 and the third scraper blade 223. The support rod 224 is provided with a first scraper blade 221, a second scraper blade 222 and a third scraper blade 223 in the scraper assembly 22, and the length of the first scraper blade 221 is less than the length of the second scraper blade 222, and the length of the second scraper blade 222 is less than the length of the third scraper blade 223, so as to achieve the effect of graded processing, so that the material is discharged more completely without any residual material. The scraper assembly 22 is provided with an elastic scraper fixing mechanism 225, and the elastic scraper fixing mechanism 225 includes a spring fixing block 2251, a reset spring 2252 and a fixing sheet 2253, and the spring fixing block 2251 is fixedly installed in the scraper mounting groove 2 On the side wall of 121, one end of the return spring 2252 is connected to the spring fixing block 2251, and the other end is connected to the fixing plate 2253. The first scraper blade 221, the second scraper blade 222 and the third scraper blade 223 are all installed in the scraper mounting groove 2121 through the elastic scraper fixing mechanism 225. By arranging the elastic scraper fixing mechanism 225 in the scraper assembly 22, and the first scraper blade 221, the second scraper blade 222 and the third scraper blade 223 are all installed in the scraper mounting groove 2121 through the elastic scraper fixing mechanism 225, the scraper blades are protected and the side wall of the drum will not be scratched.

[0028] In summary, the present invention provides an automatic sedimentation scraper unloading device for a centrifuge, comprising a pneumatic mechanism 1 and a scraper mechanism 2, wherein the scraper mechanism 2 is fixedly mounted on the pneumatic mechanism 1, and the scraper mechanism 2 is connected to the pneumatic mechanism 1, and the lifting rod 13 is driven by air pressure to move, so that the scraper mechanism 2 can move up and down in the drum of the centrifuge. Compared with manual scraper unloading, the device is safer and more efficient, and the pneumatic mechanism 1 is more firmly fixed, so that the raw materials on the side wall of the drum can be cleaned more thoroughly; by setting the scraper assembly 22 with a first scraper blade 221 and a second scraper blade 2 22 and the third scraper blade 223, and the length of the first scraper blade 221 is smaller than the length of the second scraper blade 222, and the length of the second scraper blade 222 is smaller than the length of the third scraper blade 223, so as to achieve the effect of grading treatment, and make the material discharge more complete without any residual material; by arranging an elastic scraper fixing mechanism 225 in the scraper assembly 22, and the first scraper blade 221, the second scraper blade 222 and the third scraper blade 223 are all installed in the scraper installation groove 2121 through the elastic scraper fixing mechanism 225, so as to protect the scraper blade and at the same time will not scratch the side wall of the drum.

[0029] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bottom discharge device of an automatic sedimentation scraper centrifuge, comprising a pneumatic mechanism (1) and a scraper mechanism (2), wherein the scraper mechanism (2) is fixedly mounted on the pneumatic mechanism (1); characterized in that: The pneumatic mechanism (1) comprises a pneumatic cylinder (11), a fixed mounting base (12) and a lifting rod (13), wherein the lifting rod (13) is movably mounted inside the pneumatic cylinder (11), a fixed mounting base (12) is provided at the bottom of the pneumatic cylinder (11), and the lifting rod (13) is fixedly mounted on the centrifuge cover via the fixed mounting base (12); the scraper mechanism (2) comprises a connecting assembly (21) and a scraper assembly (22), wherein the connecting assembly (21) comprises a sleeve (211) and a scraper fixing block (212), and the sleeve (211) is sleeved on the lifting rod (13) ), a scraper fixing block (212) is fixedly welded to the side of the sleeve (211), a scraper assembly (22) is provided with a first scraper blade (221), a second scraper blade (222) and a third scraper blade (223), and the first scraper blade (221), the second scraper blade (222) and the third scraper blade (223) are all fixedly mounted on the scraper fixing block (212), the length of the first scraper blade (221) is smaller than the length of the second scraper blade (222), and the length of the second scraper blade (222) is smaller than the length of the third scraper blade (223); The pneumatic cylinder (11) is provided with a gas nozzle connection cover (111) and a sealed gas nozzle (112); the gas nozzle connection cover (111) is fixedly mounted on the upper end of the pneumatic cylinder (11); and the sealed gas nozzle (112) is fixedly mounted on the upper end surface of the gas nozzle connection cover (111); The first scraper blade (221), the second scraper blade (222) and the third scraper blade (223) are all made of high-strength steel, and the lower parts are all arranged as a curved surface structure; An elastic support rod (224) is installed between the first scraper blade (221), the second scraper blade (222) and the third scraper blade (223); The scraper assembly (22) is provided with an elastic scraper fixing mechanism (225), which comprises a spring fixing block (2251), a return spring (2252) and a fixing plate (2253); the spring fixing block (2251) is fixedly mounted on the side wall of the scraper mounting groove (2121); one end of the return spring (2252) is connected to the spring fixing block (2251), and the other end is connected to the fixing plate (2253); the first scraper blade (221), the second scraper blade (222) and the third scraper blade (223) are all mounted in the scraper mounting groove (2121) via the elastic scraper fixing mechanism (225).

2. According to claim 1, the unloading device of the automatic sedimentation scraper centrifuge is characterized in that: The lifting rod (13) is provided with a threaded hole (131).

3. According to claim 1, the unloading device of the automatic sedimentation scraper centrifuge is characterized in that: A bolt mounting hole (2111) is provided on the side of the sleeve (211) and is fixedly connected to the lifting rod (13) via a hexagon socket bolt (2112), and a rubber pad (2113) is provided on the inner wall of the sleeve (211).

4. According to claim 1, the unloading device of the automatic sedimentation scraper centrifuge is characterized in that: The scraper fixing block (212) is provided with a scraper installation groove (2121), and a sealing ring (2122) is arranged at the notch of the scraper installation groove (2121).

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