A cantilevered centrifugal screen

Abstract

The utility model discloses a cantilever type centrifugal screen, including motor, with the output shaft linkage of motor stirring shaft, the rear end of along stirring shaft is set gradually in proper order stirring shaft positioning cavity, feed inlet and screen body cavity, wherein, the rear of stirring shaft is positioned in stirring shaft positioning cavity, and the front is fixed with the sleeve, and the sleeve is fixed with helical blade and scraper in proper order, the helical blade is located in the feed inlet, and the scraper is located in the screen body cavity, the screen body cavity is installed with the screen basket of cylindrical, and the screen basket is set up in the outside of scraper, and the bottom of screen body cavity is equipped with the fine material outlet with the position of screen basket, and the front of fine material outlet is equipped with overflow outlet still. The cantilever type centrifugal screen of the utility model can greatly improve the screening efficiency of powder particle compared with the traditional vibrating screen.

Description

Technical Field

[0001] This utility model belongs to the technical field of centrifugal screening equipment, specifically, it relates to a cantilever centrifugal screen. Background Technology

[0002] Centrifugal screening equipment is commonly used in industrial production. For powder and granular products, vibrating screens are frequently used. Powder and granules are conveyed onto the vibrating screen, where vibration forces fine particles to pass through the screen and fall, thus separating the powder into the desired particle size. The disadvantage of this screening method is its relatively low processing efficiency, making it unsuitable for large-volume processing. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing screening equipment such as vibrating screens in terms of low processing capacity by providing a cantilever centrifugal screen to meet the processing needs of large-volume powder and granular materials.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A cantilever centrifugal screen includes a motor, a stirring shaft linked to the output shaft of the motor, and a stirring shaft positioning cavity, a feed inlet, and a screen body cavity arranged sequentially along the rear end of the stirring shaft, wherein: The rear part of the stirring shaft is positioned inside the stirring shaft positioning cavity, and the front part is fixed with a sleeve. A spiral blade and a scraper are fixed on the sleeve in sequence. The spiral blade is located inside the feed inlet, and the scraper is located inside the screen cavity. A cylindrical sieve basket is installed inside the sieve body cavity. The sieve basket is fitted over the outside of the scraper. A fine material outlet is provided at the bottom of the sieve body cavity corresponding to the position of the sieve basket, and an overflow outlet is provided in front of the fine material outlet.

[0005] According to this utility model, the feed inlet includes a vertical feed pipe and a horizontal connecting pipe. The feed pipe is located above the spiral blade, and its bottom is connected to the connecting pipe. The rear end of the connecting pipe is connected and fixed to the outer wall of the stirring shaft positioning cavity, and the front end is connected to the sieve cavity. The spiral blade is located inside the connecting pipe.

[0006] Preferably, the feed inlet is equipped with a grid to perform initial screening of the material and prevent large particles from entering.

[0007] According to this utility model, the sieve cavity includes a front wall and a rear wall, and a baffle is provided inside the cavity near the front wall. The sieve basket is installed between the baffle and the rear wall. The baffle has a through hole at the front end of the sieve basket, and the overflow outlet is located at the bottom of the sieve cavity between the baffle and the front wall.

[0008] According to this utility model, the sieve basket is a cylindrical basket body, including a screen in the middle, retaining rings at both ends, and several reinforcing ribs connecting the retaining rings at both ends, and is connected and positioned to the baffle and the rear wall of the sieve cavity by means of the retaining rings at both ends respectively.

[0009] Preferably, one or more central rings are added in the middle of the sieve basket, and the central rings are connected and fixed to the reinforcing ribs to further enhance the overall structural strength and prevent the sieve from deforming.

[0010] According to this utility model, a fan-shaped baffle is installed at the front end of the sieve basket.

[0011] According to this utility model, a pulley is fixed at the rear end of the stirring shaft and connected to the output shaft of the motor via a belt, so that the rotation of the motor can drive the stirring shaft to rotate synchronously.

[0012] According to this utility model, the stirring shaft positioning cavity includes a front wall and a rear wall. Both the front wall and the rear wall are provided with through holes for the stirring shaft to pass through. Furthermore, a front bearing and a rear bearing are fixed to the inner sides of the front wall and the rear wall, respectively. The rear part of the stirring shaft is positioned by passing through the front bearing and the rear bearing of the front wall and the rear wall.

[0013] According to this utility model, a pair of shaft seals are provided between the front bearing and the front wall of the positioning cavity, and a sealing gasket and a pipe plug are provided between the two shaft seals for sealing between the positioning cavity of the stirring shaft and the feed inlet.

[0014] This invention relates to a cantilever centrifugal sieve, which uses a stirring shaft equipped with spiral blades and a scraper in conjunction with a sieve basket to efficiently screen powder particles. Compared with traditional vibrating sieves, the screening efficiency is significantly improved. Attached Figure Description

[0015] Figure 1 This is a front view of the cantilever centrifugal sieve of this utility model.

[0016] Figure 2 A cross-sectional schematic diagram of the section where the stirring shaft is located in a cantilever centrifugal sieve.

[0017] Figure 3 This is a three-dimensional view of a cantilever centrifugal sieve.

[0018] Figure 4 This is a schematic diagram of the sieve basket structure.

[0019] Figure 5 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0020] Drawing number explanation: 10-Motor; 11-Belt; 12-Frame; 20-Agitator shaft; 21-Sleeve; 22-Helical blade; 23-Scraper; 24-Pulley; 25-Cover; 30-Agitator shaft positioning cavity; 31-Front wall of positioning cavity; 32-Rear wall of positioning cavity; 33-Front bearing; 34-Rear bearing; 35-Shaft seal; 36-Sealing gasket; 37-Pipe plug; 38-First manhole; 40-Feed inlet; 41-Feed pipe; 42-Connecting pipe; 43-Grate; 50-Screen cavity; 51-Screen basket; 512-Snap ring; 513-Reinforcing rib; 54-Central ring; 52-Fine material outlet; 53-Overflow outlet; 54-Front wall of screen cavity; 55-Rear wall of screen cavity; 56-Baffle; 57-Baffle plate; 58-Second manhole. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0022] In the context of this utility model, the term "fixing" unless otherwise specified refers to fixing methods known in the art, such as screws, bolts and nuts, welding, etc.

[0023] In the context of this utility model, the terms "front", "rear", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model is a cantilever centrifugal screen, including a motor 10, a stirring shaft 20 linked to the output shaft of the motor 10, a stirring shaft positioning cavity 30, a feed inlet 40, and a screen body cavity 50 arranged sequentially along the rear end of the stirring shaft 20, wherein: The rear part of the stirring shaft 20 is positioned in the stirring shaft positioning cavity 30, and the front part is fixed with a sleeve 21. The sleeve 21 is sequentially fixed with a spiral blade 22 and a scraper 23. The spiral blade 22 is located in the feed inlet 40, and the scraper is located in the screen cavity 50. A cylindrical sieve basket 51 is installed inside the sieve cavity 50. The sieve basket 51 is fitted around the outside of the scraper 23. A fine material outlet 52 is provided at the bottom of the sieve cavity 50 corresponding to the position of the sieve basket 51, and an overflow outlet 53 is provided in front of the fine material outlet 52.

[0025] Furthermore, the feed inlet 40 includes a vertical feed pipe 41 and a horizontal connecting pipe 42. The feed pipe 41 is located above the spiral blade 22, and its bottom is connected to the connecting pipe 42. The rear end of the connecting pipe 42 is connected and fixed to the outer wall of the stirring shaft positioning cavity 30, and the front end is connected to the screen cavity 50. The spiral blade 22 is located inside the connecting pipe 42 so that after the material enters through the feed pipe 41, it can be pushed into the screen cavity 50 by the spiral blade 22. Preferably, the feed inlet 40 is provided with a grid 43 to perform initial screening of the material and prevent large particles from entering.

[0026] The sieve cavity 50 includes a front wall 54 and a rear wall 55, and a baffle 56 is provided inside the cavity near the front wall 54. The sieve basket 51 is installed between the baffle 56 and the rear wall 55. The baffle 56 has a through hole (not shown in the figure) at the front end of the sieve basket 51, and a fan-shaped baffle 57 is installed at the front end of the sieve hole. The overflow outlet 53 is located at the bottom of the sieve cavity 50, corresponding to the position between the baffle 56 and the front wall 54.

[0027] Furthermore, such as Figure 4 As shown, the sieve basket 51 is a cylindrical basket body, including a central sieve (not shown in the figure), retaining rings 512 at both ends, and several (preferably 3 to 5) reinforcing ribs 513 connecting the retaining rings 512 at both ends. The retaining rings 512 at both ends are used to connect and position the basket to the baffle 56 and the rear wall 55 of the sieve cavity, respectively. The positioning method can be one known in the prior art, for example, providing 3 to 5 locking slots on the retaining rings 512 and providing a corresponding number of locking heads on the baffle 56 and the rear wall 55 of the sieve cavity. The sieve basket 51 is installed and positioned by engaging the locking heads into the locking slots. Preferably, one or more central rings 514 are also added to the middle of the sieve basket 51, and the central rings 514 are welded and fixed to the reinforcing ribs 513 to further strengthen the overall structural strength and prevent sieve deformation.

[0028] Thus, when the powdery material enters the equipment through the feed inlet 40, driven by the motor 10, the stirring shaft 20 rotates, causing the spiral blades 22 to rotate and propelling the material forward into the screen basket 51 of the screen cavity 50. Under the action of the scraper 23, the material tumbles up and down. Fine powder particles with a particle size smaller than the screen mesh of the screen basket 51 pass through the screen and are discharged from the fine material outlet 55, while larger particles with a particle size larger than the screen mesh of the screen basket 51 move further forward and fall out through the gaps in the fan-shaped baffle 57, being discharged from the overflow outlet 56 below. It is easy to understand that the size of the screen mesh of the screen basket 51 can be selected as needed to screen powder particles of different sizes.

[0029] Furthermore, a pulley 24 is fixed to the rear end of the stirring shaft 20 and connected to the output shaft of the motor 10 via a belt 11, so that the rotation of the motor 10 can drive the stirring shaft 20 to rotate synchronously. Preferably, a cover 25 is provided on the outer side of the pulley 24.

[0030] Furthermore, the stirring shaft positioning cavity 30 includes a front wall 31 and a rear wall 32. Both the front wall 31 and the rear wall 32 have through holes (not shown in the figure) for the stirring shaft 20 to pass through. A front bearing 33 and a rear bearing 34 are fixed to the inner sides of the front wall 31 and the rear wall 32, respectively. The rear part of the stirring shaft 20 is positioned by passing through the front bearing 33 and the rear bearing 34 of the front wall 31 and the rear wall 32. Preferably, as... Figure 5 As shown in the enlarged schematic diagram, a pair of shaft seals 35 are provided between the front bearing 33 and the front wall 31 of the positioning cavity, and a sealing gasket 36 and a pipe plug 37 are provided between the two shaft seals 35 for sealing between the stirring shaft positioning cavity 30 and the feed inlet 40.

[0031] Furthermore, such as Figure 3 As shown, the top of the stirring shaft positioning cavity 30 is provided with a manhole (not shown in the figure), and a first manhole door 38 is installed by bolts. The top of the screen cavity 50 is also provided with a manhole (not shown in the figure), and a second manhole door 58 is installed by clamps. The structural forms of the bolts and clamps are known in the prior art and will not be described in detail here.

[0032] Furthermore, the cantilever centrifugal screen in this embodiment is also provided with a frame 12 to support the entire device.

[0033] Although the present invention has been described in detail above through specific embodiments, it should be understood that the above description is only a preferred embodiment of the present invention. Those skilled in the art can make appropriate modifications, equivalent substitutions and improvements within the spirit and principles of the present invention, all of which should be included within the protection scope of the present invention.

Claims

1. A cantilever centrifugal sieve, characterized in that, Includes a motor (10), a stirring shaft (20) linked to the output shaft of the motor (10), a stirring shaft positioning cavity (30), a feed inlet (40), and a screen cavity (50) arranged sequentially along the rear end of the stirring shaft (20), wherein: The rear part of the stirring shaft (20) is positioned in the stirring shaft positioning cavity (30), and the front part is fixed with a sleeve (21). The sleeve (21) is fixed with a spiral blade (22) and a scraper (23) in sequence. The spiral blade (22) is located in the feed inlet (40), and the scraper is located in the sieve cavity (50). A cylindrical sieve basket (51) is installed inside the sieve cavity (50). The sieve basket (51) is fitted over the outside of the scraper (23). A fine material outlet (52) is provided at the bottom of the sieve cavity (50) corresponding to the position of the sieve basket (51), and an overflow outlet (53) is provided in front of the fine material outlet (52).

2. The cantilever centrifugal sieve according to claim 1, characterized in that, The feed inlet (40) includes a vertical feed pipe (41) and a horizontal connecting pipe (42). The feed pipe (41) is located above the spiral blade (22), and its bottom is connected to the connecting pipe (42). The rear end of the connecting pipe (42) is connected and fixed to the outer wall of the stirring shaft positioning cavity (30), and the front end is connected to the sieve cavity (50). The spiral blade (22) is located inside the connecting pipe (42).

3. The cantilever centrifugal sieve according to claim 2, characterized in that, The feed inlet (40) is provided with a grid (43).

4. The cantilever centrifugal sieve according to claim 1, characterized in that, The sieve cavity (50) includes a front wall (54) and a rear wall (55), and a baffle (56) is provided inside the sieve cavity near the front wall (54). The sieve basket (51) is installed between the baffle (56) and the rear wall (55). The baffle (56) has a through hole at the front end of the sieve basket (51), and the overflow outlet (53) is located at the bottom of the sieve cavity (50) between the baffle (56) and the front wall (54).

5. The cantilever centrifugal sieve according to claim 4, characterized in that, The sieve basket (51) is a cylindrical basket body, including a screen (511) in the middle, retaining rings (512) at both ends, and several reinforcing ribs (513) connecting the retaining rings (512) at both ends. The retaining rings (512) at both ends are connected and positioned to the baffle (56) and the rear wall (55) of the sieve cavity, respectively.

6. The cantilever centrifugal sieve according to claim 5, characterized in that, One or more central rings (514) are added in the middle of the sieve basket (51), and the central rings (514) are connected and fixed to the reinforcing ribs (513) to further strengthen the overall structural strength and prevent the sieve (511) from deforming.

7. The cantilever centrifugal sieve according to claim 4, characterized in that, The front end of the sieve basket (51) is equipped with a fan-shaped baffle (57).

8. The cantilever centrifugal sieve according to claim 1, characterized in that, The rear end of the stirring shaft (20) is fixed with a pulley (24) and is connected to the output shaft of the motor (10) via a belt (11) so that the rotation of the motor (10) can drive the stirring shaft (20) to rotate synchronously.

9. The cantilever centrifugal sieve according to claim 1, characterized in that, The stirring shaft positioning cavity (30) includes a front wall (31) and a rear wall (32). Both the front wall (31) and the rear wall (32) of the positioning cavity are provided with through holes for the stirring shaft (20) to pass through. Furthermore, a front bearing (33) and a rear bearing (34) are fixed on the inner side of the front wall (31) and the rear wall (32) of the positioning cavity, respectively. The rear part of the stirring shaft (20) is positioned by passing through the front bearing (33) and the rear bearing (34) of the front wall (31) and the rear wall (32) of the positioning cavity.

10. The cantilever centrifugal sieve according to claim 9, characterized in that, A pair of shaft seals (35) are provided between the front bearing (33) and the front wall (31) of the positioning cavity, and a sealing gasket (36) and a pipe plug (37) are provided between the two shaft seals (35) for sealing between the stirring shaft positioning cavity (30) and the feed inlet (40).

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