Powder concentrator
By designing a detachable outer windshield structure, the problems of high labor costs and long replacement cycle during the maintenance process of existing powder separators are solved, and the simplicity and cost reduction of replacement and maintenance are achieved.
Patent Information
- Application Number
- CN202420923298.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing powder separator needs to be replaced as a whole when maintaining the outer windshield, resulting in high labor costs, long replacement cycles and special lifting equipment, which is expensive.
A detachable outer windshield structure is designed, which is bolted to the mounting plate. The outer windshield plate is divided into several arc plates, and only the worn parts are replaced, simplifying the maintenance process and reducing labor and equipment costs.
It realizes that no special equipment is required during replacement and maintenance, significantly reduces maintenance cycle and labor costs, simplifies the replacement process, and saves the processing cost of the outer windshield.
Smart Images
Figure CN222219869U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of powder selecting machines, and specifically relates to a powder selecting machine. Background Art
[0002] The traditional high-efficiency powder concentrator area is mainly composed of stationary blades and moving rotors. The stationary blades guide the airflow, and the moving rotor is the key component for separating coarse and fine particles of powder. The fine powder is selected and collected after passing through the moving rotor, and the coarse powder returns through the lower channel of the rotor for further grinding. In the above process, the sealing of the top of the moving rotor is the key. The current mainstream technology basically adopts mechanical labyrinth seals. The mechanical labyrinth seal consists of an outer windshield set between the stationary blades and the moving rotor, a moving rotor sweeping blade, a powder concentrator housing, and a rotor inner windshield. See Figure 1 The outer wind shield of the moving rotor is in the main classification area and is severely eroded by coarse and fine particle powders and needs regular maintenance and replacement. The outer wind shield is limited by structural characteristics and space layout. The mainstream method is to directly weld it on the shell of the powder classifier. This form leads to limited operating space for maintenance and replacement of the outer wind shield of the moving rotor.
[0003] At present, there is a solution: overall replacement and maintenance of the outer windshield, which is to remove the powder selection motor rotor, use lifting equipment to lift the powder selection machine shell for auxiliary support, and then Figure 2 , replacing and welding the outer baffle of the moving rotor for maintenance. It is precisely because of the use of this solution of replacing the outer wind shield as a whole that it will lead to problems such as high labor costs, long maintenance cycle for replacing the outer wind shield, and high cost of special lifting equipment. Utility Model Content
[0004] The purpose of the utility model is to provide a powder classifier to solve the above shortcomings, so as to solve the problems that the powder classifier in the prior art needs to replace the outer windshield as a whole when maintaining the outer windshield, which leads to high labor costs, long maintenance cycle for replacing the outer windshield, and high costs for special lifting equipment. To achieve the above purpose, the utility model provides the following technical solutions:
[0005] A powder classifier comprises a middle shell and a lower shell, wherein the middle shell and the lower shell are connected to form a powder classifier body, wherein a powder screening system is arranged in the powder classifier body for screening coarse and fine powder; the powder screening system comprises stationary blades, moving rotor sweeping blades, an auxiliary plate and a transmission system; the stationary blades are fixedly connected to the lower part inside the middle shell; the moving rotor sweeping blades are connected to the transmission system; the auxiliary plate is detachably connected to the lower part inside the middle shell, and cooperates with the moving rotor sweeping blades and the stationary blades to complete the screening of coarse and fine powder.
[0006] Furthermore, the auxiliary plate includes an outer wind shield plate and an inner wind shield plate; the outer wind shield plate and the inner wind shield plate are both arranged at the lower inner side of the middle shell, and are respectively located at the outer side and the inner side of the moving rotor sweeping blade.
[0007] Furthermore, a mounting plate is provided on the middle shell; the mounting plate is located inside the powder classifier body; a plurality of mounting holes are provided on the mounting plate; corresponding threaded holes are provided on the outer wind shield plate; the outer wind shield plate is fixedly connected with the mounting plate through a bolt structure.
[0008] Furthermore, the outer wind shield plate is composed of a plurality of circular arc plates; the plurality of circular arc plates are arranged around the movement trajectory of the wind sweeping blades of the moving rotor.
[0009] Furthermore, an auxiliary fixing plate is provided on the moving rotor wind sweeping blade.
[0010] Furthermore, the transmission system includes a transmission shaft and a motor; the motor is fixed on the powder classifier body, and its output end is located at the center of the powder classifier body; the output end of the motor is fixedly connected to the moving rotor sweeping blades through the transmission shaft, driving the moving rotor sweeping blades to rotate inside the powder classifier body.
[0011] Furthermore, an entry hole is provided on the middle shell.
[0012] Furthermore, a first sealing cover is provided on the entrance hole.
[0013] Furthermore, an inspection hole is provided on the mounting plate at a position corresponding to the wind sweeping blade of the moving rotor.
[0014] Furthermore, a second sealing cover is provided on the inspection hole.
[0015] The beneficial effects of the utility model are:
[0016] 1. The utility model provides a powder classifier, which is provided with a detachable outer wind shield plate, and the replacement and maintenance method is simple. Compared with the traditional replacement and maintenance method, no special lifting equipment is required, which can greatly reduce the replacement and maintenance cycle and labor cost;
[0017] 2. The utility model provides a powder classifier, which divides the outer wind shield into several parts, and only needs to replace the worn outer wind shield during replacement and maintenance. The replacement method is simple and the processing cost of the outer wind shield is reduced; BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the traditional installation method of the outer wind shield of the powder selector;
[0019] Figure 2 This is a schematic diagram of the traditional replacement and maintenance method of the outer windshield of the powder classifier;
[0020] Figure 3 It is a schematic diagram of the structure of the utility model;
[0021] Figure 4 yes Figure 3 A magnified image;
[0022] Figure 5 This is a schematic diagram of the installation of the outer wind shield plate and the location of the inspection hole of the powder selector of the utility model;
[0023] In the attached drawings: 1-middle casing, 2-lower casing, 3-stationary blades, 4-moving rotor sweeping blades, 5-outer wind shield plate, 6-inner wind shield plate, 7-auxiliary fixing plate, 8-transmission shaft, 9-motor, 10-entry hole, 11-inspection hole. DETAILED DESCRIPTION
[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the present invention is not limited to the following embodiments.
[0025] Embodiment 1:
[0026] See attached Figures 1 to 5 . A powder classifier includes a middle shell 1 and a lower shell 2, wherein the middle shell 1 and the lower shell 2 are connected to form a powder classifier body, wherein a powder screening system is arranged in the powder classifier body for sorting coarse and fine powders; the powder screening system includes stationary blades 3, moving rotor sweeping blades 4, an auxiliary plate and a transmission system; the stationary blades 3 are fixedly connected to the lower part of the middle shell 1; the moving rotor sweeping blades 4 are connected to the transmission system; the auxiliary plate is detachably connected to the lower part of the middle shell 1, and cooperates with the moving rotor sweeping blades 4 and the stationary blades 3 to complete the screening of coarse and fine powders. As can be seen from the above structure, a powder classifier of the utility model mainly includes a powder classifier body composed of a middle shell 1 and a lower shell 2, wherein a powder screening system is arranged inside the powder classifier body, and the screening of coarse and fine powders is achieved through the operation of the powder screening system in the powder classifier body. The specific powder screening system mainly includes a stationary blade 3, a moving rotor sweeping blade 4, an auxiliary plate and a transmission system. The transmission system is fixed inside the powder classifier body to drive the rotation of the moving rotor sweeping blade 4 to generate airflow movement, thereby driving the movement of the powder. The stationary blade 3 and the auxiliary plate are arranged inside the powder classifier body, and their position setting is the same as that inside the powder classifier of the prior art, such as Figure 1As shown, the guiding effect of the airflow is achieved through the cooperation of the stationary blades 3 and the auxiliary plates, and the screening process of the powder is achieved. The powder classifier body is also provided with a channel arranged in the same manner as the powder classifier in the prior art, and the screened coarse powder is returned by the channel for further grinding. The auxiliary plate specifically includes an outer wind shield 5 and an inner wind shield 6, and the outer wind shield 5 and the inner wind shield 6 are respectively connected to the outer side and the inner side of the moving rotor sweeping blade 4, the stationary blade 3 is fixedly connected to the powder classifier body, and is located on the outer side of the moving rotor sweeping blade 4, the outer wind shield 5 is located between the stationary blade 3 and the moving rotor sweeping blade 4, the stationary blade 3, the moving rotor sweeping blade 4, the outer wind shield 5 and the inner wind shield 6 are in the same horizontal plane, the outer wind shield 5 is connected to the powder classifier body through a detachable structure, and the inner wind shield 6 can be fixedly connected to the powder classifier body, or can be connected to the powder classifier body through a detachable structure. The utility model provides a detachable outer wind shield and inner wind shield, so that the entire middle shell does not need to be disassembled during maintenance, and no special lifting equipment is required, which can greatly reduce the replacement and maintenance cycle and labor costs. In the same way, the stationary blades and other structures can also be provided with a detachable structure, which makes replacement and maintenance faster.
[0027] Embodiment 2:
[0028] See attached Figures 1 to 5 On the basis of the first embodiment, the auxiliary plate includes an outer wind shield plate 5 and an inner wind shield plate 6; the outer wind shield plate 5 and the inner wind shield plate 6 are both arranged at the lower part of the middle shell 1, and are respectively located at the outer side and the inner side of the moving rotor sweeping blade 4. As can be seen from the above structure, specifically, the auxiliary plate includes an outer wind shield plate 5 and an inner wind shield plate 6, which are respectively arranged at the outer side and the inner side of the moving rotor sweeping blade 4 to protect the moving rotor sweeping blade 4 from being eroded by powder.
[0029] The middle shell 1 is provided with a mounting plate; the mounting plate is located inside the powder selector body; the mounting plate is provided with a number of mounting holes; the outer wind shield 5 is provided with corresponding threaded holes; the outer wind shield 5 is fixedly connected with the mounting plate by a bolt structure. As can be seen from the above structure, a mounting plate is provided inside the middle shell 1, and the stationary blades 3, the outer wind shield 5 and the inner wind shield 6 are all arranged on the mounting plate and arranged downward, the moving rotor sweeping blade 4 is located below the mounting plate and is limited between the outer wind shield 5 and the inner wind shield 6, and a number of mounting holes are provided on the mounting plate, and the outer wind shield 5 and the inner wind shield 6 are provided with threaded holes, which cooperate with the mounting holes and are fixedly connected by a bolt structure, so that the fixing and disassembly of the outer wind shield 5 and the inner wind shield 6 are more convenient. The mounting plate is fixed to the inner wall of the powder selector in a circular ring shape, and the cross-sectional shapes of the outer wind shield 5 and the inner wind shield 6 are both circular, forming a circular stroke concentric circle structure with the motion trajectory of the moving rotor sweeping blade 4.
[0030] Embodiment three:
[0031] See attached Figures 1 to 5. On the basis of the second embodiment, the outer wind shield plate 5 is composed of a plurality of circular arc plates; the plurality of circular arc plates are arranged around the movement trajectory of the moving rotor sweeping blade 4. It can be seen from the above structure that the outer wind shield plate 5 is evenly divided into a plurality of circular arc plates, and the plurality of circular arc plates are arranged around the movement trajectory of the moving rotor sweeping blade 4. When the powder classifier is operating, the outer wind shield plates 5 in different directions are impacted differently by the powder, and the degree of wear of the outer wind shield plates 5 in different directions is different. During the maintenance stage, only the circular arc plates with severe wear can be replaced, without replacing the entire outer wind shield plate, which is more cost-effective and easier to replace.
[0032] The movable rotor wind sweeping blade 4 is provided with an auxiliary fixing plate 7. As can be seen from the above structure, the auxiliary fixing plate 7 is fixed on the movable rotor wind sweeping blade 4. When the worn arc plate needs to be replaced, the new arc plate is first fixed on the movable rotor wind sweeping blade 4 through the auxiliary fixing plate 7. The arc plate rotates with the movable rotor wind sweeping blade 4 to the position where replacement is required, and then the movable rotor wind sweeping blade 4 is stopped, and the arc plate is removed from the movable rotor wind sweeping blade 4 and installed on the mounting plate.
[0033] The transmission system includes a transmission shaft 8 and a motor 9; the motor 9 is fixed on the powder classifier body, and its output end is located at the center of the powder classifier body; the output end of the motor 9 is fixedly connected to the moving rotor sweeping blade 4 through the transmission shaft 8, driving the moving rotor sweeping blade 4 to rotate in the powder classifier body. From the above structure, it can be seen that the transmission system is used to drive the rotation of the moving rotor sweeping blade 4, mainly composed of a motor 9 and a transmission shaft 8, the motor 9 is fixed on the powder classifier body, and its output end passes through the powder classifier body into the interior and is located at the center of the powder classifier body, the output end of the motor 9 is connected to a plurality of transmission shafts 8, the number of transmission shafts 8 matches the number of moving rotor sweeping blades 4, the end of the transmission shaft 8 away from the motor 9 is fixedly connected to the moving rotor sweeping blade 4, the motor 9 is started, and the output end begins to rotate, so that the moving rotor sweeping blade 4 rotates in the powder classifier body, causing air flow movement, and driving the movement of powder.
[0034] The middle shell 1 is provided with an entry hole 10. As can be seen from the above structure, the entry hole 10 of the middle shell 1 is used for maintenance personnel and the outer wind shield 5 to enter the powder classifier body, which is convenient for maintenance personnel to operate.
[0035] Embodiment 4:
[0036] See attached Figures 1 to 5 On the basis of the third embodiment, a first sealing cover is provided on the entrance hole 10. As can be seen from the above structure, the first sealing cover ensures the sealing performance of the entrance hole 10, ensures that the powder material in the powder selection machine body can be screened smoothly, and the powder material will not be lost and wasted.
[0037] The mounting plate is provided with an inspection hole 11 at the position corresponding to the moving rotor sweeping blade 4. As can be seen from the above structure, the position of the inspection hole 11 corresponds to the motion trajectory of the moving rotor sweeping blade 4, which is convenient for maintenance personnel to fix the outer wind shield plate on the moving rotor sweeping blade 4 through the auxiliary fixing plate 7.
[0038] A second sealing cover is provided on the inspection hole 11. As can be seen from the above structure, the second sealing cover ensures the sealing performance at the inspection hole 11 and does not affect the direction of the airflow in the powder classifier body.
[0039] Working process: When installing, the maintenance person opens the second sealing cover, lowers the outer wind shield plate 5 from the inspection hole 11 and places it on the auxiliary fixing plate 7 for auxiliary fixation, rotates it to the installation position together with the moving rotor wind sweeping blade 4, and fastens it to the mounting plate above the moving rotor wind sweeping blade 4 with bolts. Repeat the previous step and install the others in turn until the last piece is installed, then close the second sealing cover and the first sealing cover. The removal process is the opposite of the above process.
[0040] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A powder classifier, comprising a middle shell (1) and a lower shell (2), wherein the middle shell (1) and the lower shell (2) are connected to form a powder classifier body, characterized in that: The powder selection machine body is provided with a powder screening system for sorting coarse and fine powders; the powder screening system comprises stationary blades (3), moving rotor sweeping blades (4), an auxiliary plate and a transmission system; the stationary blades (3) are fixedly connected to the lower part of the middle shell (1); the moving rotor sweeping blades (4) are connected to the transmission system; the auxiliary plate is detachably connected to the lower part of the middle shell (1) and cooperates with the moving rotor sweeping blades (4) and the stationary blades (3) to complete the screening of coarse and fine powders.
2. A powder classifier according to claim 1, characterized in that: The auxiliary plate comprises an outer wind shield plate (5) and an inner wind shield plate (6); the outer wind shield plate (5) and the inner wind shield plate (6) are both arranged at the lower part of the middle shell (1) and are respectively located at the outer side and the inner side of the moving rotor sweeping blade (4).
3. A powder classifier according to claim 2, characterized in that: The middle shell (1) is provided with a mounting plate; the mounting plate is located inside the powder selector body; the mounting plate is provided with a plurality of mounting holes; the outer wind shield (5) is provided with corresponding threaded holes; the outer wind shield (5) is matched with the mounting plate and fixedly connected via a bolt structure.
4. A powder classifier according to claim 2, characterized in that: The outer wind shield plate (5) is composed of a plurality of circular arc plates; the plurality of circular arc plates are arranged around the movement trajectory of the moving rotor wind sweeping blades (4).
5. A powder classifier according to claim 1, characterized in that: An auxiliary fixing plate (7) is provided on the moving rotor wind sweeping blade (4).
6. A powder classifier according to claim 1, characterized in that: The transmission system comprises a transmission shaft (8) and a motor (9); the motor (9) is fixed on the powder classifier body, and its output end is located at the center of the powder classifier body; the output end of the motor (9) is fixedly connected to the moving rotor sweeping blade (4) through the transmission shaft (8), driving the moving rotor sweeping blade (4) to rotate inside the powder classifier body.
7. A powder classifier according to claim 1, characterized in that: The middle housing (1) is provided with an entry hole (10).
8. A powder classifier according to claim 7, characterized in that: The entrance hole (10) is provided with a first sealing cover.
9. A powder classifier according to claim 3, characterized in that: An inspection hole (11) is provided on the mounting plate at a position corresponding to the moving rotor wind sweeping blade (4).
10. A powder classifier according to claim 9, characterized in that: The inspection hole (11) is provided with a second sealing cover.