Rotary drum sand screening machine
By using adjusting rollers and arc screen structures in the drum sand screen machine, the problem of poor sand screening effect caused by the deformation of the screen barrel is solved, and the sand screening effect is improved and the convenience of screening barrel replacement is achieved.
Patent Information
- Application Number
- CN202422434809.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The screen barrel of the drum type sand screening machine is prone to deformation during the screening process, resulting in poor sand screening effect.
The adjustment member is adopted to include two adjustment rollers. The adjustment rollers abut against the inner and outer side walls of the screen barrel respectively, and drive the screen barrel to rotate through the driving member. The distance between the adjustment rollers is the thickness of the screen barrel to reduce the deformation of the screen barrel. At the same time, the screen barrel is composed of several arc-shaped screen mesh, which facilitates the directional replacement of the damaged screen mesh.
It effectively reduces the deformation of the screen barrel, improves the sand screening effect, and reduces the frequency of the overall replacement of the screen barrel.
Smart Images
Figure CN223234320U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of sand screening machines, and in particular to a drum sand screening machine. Background Art
[0002] Sand screening machine, also known as dryland sand screening ship and sand and gravel separator, is a sand and gravel separation equipment suitable for rivers, reservoirs, and coal yards. Sand screening machines are mainly divided into drum sand screening machines, water-washing drum sand screening machines and vibrating sand screening machines.
[0003] The drum sand screening machine mainly screens sand by using a screen barrel which is tilted on the frame. The stones entering the screen barrel abut against the lowest point of the inner wall of the screen barrel. During the rotation of the screen barrel, the supporting force of the screen barrel on the stones gradually decreases until the supporting force is less than the gravity of the stone itself. The stones break away from the inner wall of the screen barrel and fall to the lowest point of the screen barrel again. Since the screen barrel is tilted, each movement of the stones relative to the screen barrel will move in the tilted direction of the screen barrel until they break away from the screen barrel. When the stones break away from the screen barrel and fall to the lowest point of the screen barrel again, they have an impact on the screen barrel, causing the screen barrel to bend and deform. If this continues for a long time, it will easily lead to changes in the mesh size on the screen barrel, resulting in poor sand screening effect. Utility Model Content
[0004] In order to reduce the surface deformation of the screen barrel and ensure good sand screening effect, the present application provides a drum sand screening machine.
[0005] The present application provides a drum sand screening machine, which adopts the following technical solution:
[0006] A drum sand screening machine includes a frame, a screen barrel, a driving member and an adjusting member. The screen barrel is connected to the frame in an inclined and rotatable manner. The driving member is used to drive the screen barrel to rotate. The adjusting member includes two adjusting rollers, which respectively abut the inner and outer side walls of the screen barrel. The distance between the two adjusting rollers is the thickness of the screen barrel. The adjusting rollers are rotatably connected to the frame.
[0007] By adopting the above technical solution, during the sand screening process, sand containing stones enters the screen barrel, and the screen barrel rotates under the drive of the driving member. The stones in the sand hit the screen barrel during the sand screening process, causing the screen barrel to deform. The screen barrel rotates between the two adjusting rollers. Since the distance between the two adjusting rollers is only the thickness of the screen barrel, the adjusting rollers, driven by the driving member, squeeze the inner and outer side walls of the screen barrel at the deformed position to reduce the deformation of the screen barrel, thereby ensuring the sand screening effect.
[0008] Optionally, the driving member includes a driving motor, a driving ring gear and a driving gear, the driving ring gear is arranged on the screen barrel, the driving ring gear is rotatably connected to the frame, the driving gear is coaxially arranged with the adjustment roller located on the outside of the screen barrel, the driving gear is arranged on the adjustment roller, and the driving motor is used to drive the driving gear to rotate.
[0009] By adopting the above technical solution, when the staff needs to screen the sand in the sieve bucket, the staff starts the drive motor, the drive motor drives the drive gear to rotate, the drive gear drives the drive ring gear to rotate, and the drive ring gear drives the sieve bucket to rotate. The drive component has a simple structure and is easy to operate; at the same time, the drive gear drives the adjustment roller abutting the outer wall of the sieve bucket to rotate, which can reduce the friction between the adjustment rollers of the sieve bucket and extend the service life of the sieve bucket.
[0010] Optionally, the screen barrel includes several arc-shaped screens, and a connecting piece is provided on the arc-shaped screen. The connecting piece includes a clamping strip and several bolts. The clamping strip is provided on the long side of the arc-shaped screen, and a clamping groove for clamping with the clamping strip is provided on the other long side of the arc-shaped screen. Several bolts are distributed along the length direction of the clamping strip, and the tail of the bolt passes through the clamping strip and is threadedly connected to the adjacent arc-shaped screen.
[0011] By adopting the above technical solution, the screen barrel has been used for a long time and its mesh has been damaged, and it needs to be replaced in time. The screen barrel is composed of several curved screens, so that the screen barrel does not need to be replaced as a whole. When the curved screen is damaged, the staff can unscrew the bolts on the corresponding clamping strip to disengage the clamping strip from the clamping groove. After replacing the new curved screen, the clamping strip is matched with the clamping groove and fixed with bolts. The replacement is convenient, which reduces the replacement frequency of the entire screen barrel.
[0012] Optionally, the clamping strip is provided with a countersunk hole for accommodating the bolt head, and the bolt is a hexagon socket bolt.
[0013] By adopting the above technical solution, since the clamping strip and the clamping groove need to be fixed by bolts after being matched, the countersunk hole prevents the bolt head from being exposed from the outer wall of the arc screen, reducing the contact between the bolt and the adjustment roller, and the structure is more reasonable.
[0014] Optionally, a support ring is provided on the driving gear ring, and the support ring is used to abut the inner wall of the arc-shaped screen. A plurality of limit bars are provided on the support ring, and the plurality of limit bars are used to correspond one-to-one with a plurality of arc-shaped screens. A limit groove is provided on the arc-shaped screen, and the limit bar is used to engage with the limit groove.
[0015] By adopting the above technical solution, since the screen barrel is composed of an arc-shaped screen, the support ring can support the arc-shaped screen to better maintain the overall shape of the screen barrel. When the arc-shaped screen is replaced, the limit bar can facilitate the arc-shaped screen to be snapped together with the support ring, which is convenient for positioning the arc-shaped screen and also drives the arc-shaped screen to rotate when the driving gear ring rotates.
[0016] Optionally, two support rollers are rotatably connected to the frame, and the support rollers are used to abut against the outer side wall of the screen barrel.
[0017] By adopting the above technical solution, the support roller abuts against the outer side wall of the screen barrel, making the rotation of the screen barrel more stable and improving the effect of the sand screening process.
[0018] Optionally, a feed hopper is further provided on the frame, and an outlet of the feed hopper is located in the screen barrel.
[0019] By adopting the above technical solution, the staff puts the sand with stones into the feed hopper. Through the guidance of the feed hopper, the sand with stones can all enter the screening barrel, reducing the situation where the sand that has completed the screening process is polluted by the inaccurate feeding into the screening barrel.
[0020] Optionally, a knocking piece for knocking the side wall of the hopper is provided on the frame, and the knocking piece includes a knocking motor and a knocking rod. The knocking motor is provided on the frame, and the knocking rod is provided on the output shaft of the knocking motor.
[0021] By adopting the above technical solution, some sand is in a wet state and is easy to adhere to the inner wall of the hopper. The staff can start the knocking piece, and the knocking motor drives the knocking rod to rotate. The knocking rod knocks the side wall of the hopper, and the hopper shakes so that the adhered sand falls from the outlet of the hopper.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. The adjustment piece is used to reduce the surface deformation of the screen barrel and improve the sand screening effect;
[0024] 2. The screen barrel is composed of several curved screens, so that the staff can replace the damaged curved screens in a targeted manner, reducing the overall replacement frequency of the screen barrel;
[0025] 3. The knocking piece on the hopper makes the sand adhering to the hopper fall out of the hopper. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural diagram of a drum sand screening machine.
[0027] Figure 2 yes Figure 1The exploded view of the middle screen barrel shows the coordination between the drive gear ring and the curved screen.
[0028] Figure 3 yes Figure 1 The cross-sectional view of the middle screen barrel is used to show the matching relationship between adjacent curved screens.
[0029] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle drive component.
[0030] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle striking member.
[0031] Figure numerals: 1. Frame; 2. Screen barrel; 21. Arc screen; 22. Connecting piece; 221. Snap-on strip; 222. Bolt; 223. Snap-on groove; 224. Countersunk hole; 23. Limiting groove; 3. Driving piece; 31. Driving motor; 32. Driving ring gear; 33. Driving gear; 34. Support ring; 35. Limiting strip; 4. Adjusting piece; 41. Adjusting roller; 5. Feed hopper; 6. Support roller; 7. Knocking piece; 71. Knocking motor; 72. Knocking rod; 73. Knocking ball. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-5 This application is described in further detail.
[0033] The embodiment of the present application discloses a drum sand screening machine. Figure 1 A drum sand screening machine includes a frame 1, a screen barrel 2, a driving member 3, an adjusting member 4 and a feed hopper 5. The screen barrel 2 is arranged tilted, and the screen barrel 2 is rotatably connected to the frame 1. The feed hopper 5 is fixedly arranged on the frame 1. The feed hopper 5 is used to pass sand with stones into the higher end of the screen barrel 2. The driving member 3 is used to drive the screen barrel 2 to rotate, and the adjusting member 4 is used to reduce the surface deformation of the screen barrel 2.
[0034] Reference Figure 1 and Figure 2 Two support rollers 6 are provided on the frame 1, and the two support rollers 6 are distributed along the width direction of the frame 1, and the support rollers 6 are parallel to the axial direction of the screen barrel 2. The support rollers 6 are rotatably connected to the frame 1, and the support rollers 6 are in contact with the outer wall of the screen barrel 2. The adjusting part 4 includes two adjusting rollers 41, and the adjusting rollers 41 are parallel to the axial direction of the screen barrel 2. The two adjusting rollers 41 are distributed in the vertical direction, and the two adjusting rollers 41 are respectively located inside and outside the screen barrel 2. The two adjusting rollers 41 are respectively in contact with the highest points of the inner and outer walls of the screen barrel 2, and the adjusting rollers 41 are rotatably connected to the frame 1.
[0035] Reference Figure 2 and Figure 3The screen barrel 2 includes six arc-shaped screens 21, and adjacent arc-shaped screens 21 abut against each other. A connecting piece 22 is provided on the arc-shaped screen 21, and the connecting piece 22 includes a clamping strip 221 and a plurality of bolts 222. The length direction of the clamping strip 221 is parallel to the long side of the arc-shaped screen 21, and the clamping strip 221 is fixedly arranged on one side wall of the arc-shaped screen 21. The other side wall of the arc-shaped screen 21 is provided with a clamping groove 223, and the clamping strip 221 is used to clamp with the clamping groove 223 of the adjacent arc-shaped screen 21. The clamping strip 221 is provided with a plurality of countersunk holes 224 along the length direction of the clamping strip 221, and a plurality of bolts 222 correspond one to one with the plurality of countersunk holes 224. The bolt 222 is a hexagon socket bolt, and the tail of the bolt 222 passes through the countersunk hole 224 and is threadedly connected to the bottom of the clamping groove 223, and the head of the bolt 222 is located in the countersunk hole 224.
[0036] Reference Figure 2 and Figure 4 The driving member 3 includes a driving motor 31, two driving gear rings 32 and two driving gears 33. The two driving gear rings 32 are distributed along the long side direction of the arc-shaped screen 21. The driving gear rings 32 are respectively located on both sides of the arc-shaped screen 21. The driving gear rings 32 are rotatably connected to the frame 1. A support ring 34 is provided on the driving gear ring 32. The support ring 34 is coaxially arranged with the driving gear ring 32. The support ring 34 is fixedly arranged on the side wall of the driving gear ring 32. The support ring 34 is used to abut the inner side wall of the arc-shaped screen 21. Six limit bars 35 are fixedly provided on the support ring 34. The six limit bars 35 Uniformly distributed along the circumference of the axis of the support ring 34, the six limit bars 35 correspond one-to-one to the six arc-shaped screens 21, and a limit groove 23 is provided on the inner side wall of the arc-shaped screen 21. The limit groove 23 extends along the thickness direction of the arc-shaped screen 21. The limit groove 23 is used to clamp the limit bar 35. The two drive gears 33 correspond one-to-one to the two drive gear rings 32. The drive gear 33 is coaxially arranged with the adjustment roller 41 located on the outside of the arc-shaped screen 21. The drive gear 33 is fixed on the adjustment roller 41. The drive motor 31 is fixed on the frame 1. The drive motor 31 drives the adjustment roller 41 to rotate.
[0037] Reference Figure 1 and Figure 5 The frame 1 is also provided with a knocking piece 7 for knocking the hopper 5. The knocking piece 7 includes a knocking motor 71, a knocking rod 72 and a knocking ball 73. The knocking motor 71 is fixedly set on the frame 1. The length of the knocking rod 72 is perpendicular to the output shaft of the knocking motor 71. One end of the knocking rod 72 is fixedly set on the output shaft of the knocking motor 71. The knocking ball 73 is fixedly set on the other end of the knocking rod 72. The knocking ball 73 is used to knock the side wall of the hopper 5.
[0038] The implementation principle of a drum sand screening machine in an embodiment of the present application is as follows: the staff puts sand containing stones into the feed hopper 5, and the material enters the screening barrel 2 through the feed hopper 5. When there is sand adhering to the inner wall of the feed hopper 5, the staff can start the knocking motor 71, and the knocking motor 71 drives the knocking rod 72 to rotate, and the knocking rod 72 drives the knocking ball 73 to knock on the outer wall of the feed hopper 5. The feed hopper 5 shakes to shake off the sand adhering to the inner wall of the feed hopper 5.
[0039] When the equipment needs to screen sand containing stones, the staff starts the drive motor 31, the drive motor 31 drives the drive gear 33 to rotate, the drive gear 33 drives the drive ring gear 32 to rotate, and the drive ring gear 32 drives the screen barrel 2 to rotate. The stones are separated from the screen barrel 2 from the lowest point of the screen barrel 2 and the sand is separated from the screen barrel 2 from the sieve holes of the screen barrel 2 for separation.
[0040] When the driving motor 31 drives the driving gear 33 to rotate, the driving gear 33 will drive the adjusting roller 41 to rotate. When the screen barrel 2 rotates, the screen barrel 2 will pass through the two adjusting rollers 41, and the adjusting rollers 41 will abut against the inner and outer side walls of the screen barrel 2, reducing the bending deformation of the screen barrel 2.
[0041] When the curved screen 21 constituting the screen barrel 2 is damaged, the staff can replace the curved screen 21. The staff can unscrew the bolt 222 on the corresponding curved screen 21 to disengage the connecting strip 221 of the curved screen 21 from the connecting groove 223 of the adjacent curved screen 21. After replacing the new annular screen, first connect the limiting groove 23 on the annular screen with the limiting strip 35 on the support ring 34, and connect the connecting strip 221 to the connecting groove 223 on the adjacent curved screen 21, and then tighten the bolt 222 so that the head of the bolt 222 is located in the countersunk hole 224 to complete the replacement of the curved screen 21.
[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A drum sand screening machine, characterized by: The invention comprises a frame (1), a screen barrel (2), a driving member (3) and an adjusting member (4), wherein the screen barrel (2) is connected to the frame (1) in an inclined and rotatable manner, the driving member (3) is used to drive the screen barrel (2) to rotate, and the adjusting member (4) comprises two adjusting rollers (41), the two adjusting rollers (41) respectively abut against the inner and outer side walls of the screen barrel (2), the distance between the two adjusting rollers (41) is the thickness of the screen barrel (2), and the adjusting rollers (41) are rotatably connected to the frame (1).
2. A drum sand screening machine according to claim 1, characterized in that: The driving member (3) includes a driving motor (31), a driving ring gear (32) and a driving gear (33); the driving ring gear (32) is arranged on the screen barrel (2); the driving ring gear (32) is rotatably connected to the frame (1); the driving gear (33) is coaxially arranged with an adjustment roller (41) located outside the screen barrel (2); the driving gear (33) is arranged on the adjustment roller (41); and the driving motor (31) is used to drive the driving gear (33) to rotate.
3. A drum sand screening machine according to claim 2, characterized in that: The screen barrel (2) includes a plurality of arc-shaped screens (21), and a connecting piece (22) is provided on the arc-shaped screen (21). The connecting piece (22) includes a clamping strip (221) and a plurality of bolts (222). The clamping strip (221) is provided on the long side of the arc-shaped screen (21), and a clamping groove (223) is provided on the other long side of the arc-shaped screen (21) to be clamped with the clamping strip (221). The plurality of bolts (222) are distributed along the length direction of the clamping strip (221), and the tail of the bolt (222) passes through the clamping strip (221) and is threadedly connected to the adjacent arc-shaped screen (21).
4. The drum sand screening machine according to claim 3, characterized in that: The clamping strip (221) is provided with a countersunk hole (224) for accommodating the head of the bolt (222), and the bolt (222) is a hexagon socket bolt.
5. The drum sand screening machine according to claim 4, characterized in that: A support ring (34) is provided on the driving gear ring (32), and the support ring (34) is used to abut against the inner wall of the arc-shaped screen (21). A plurality of limit strips (35) are provided on the support ring (34), and the plurality of limit strips (35) are used to correspond one-to-one with the plurality of arc-shaped screens (21). A limit slot (23) is provided on the arc-shaped screen (21), and the limit strips (35) are used to engage with the limit slots (23).
6. The drum sand screening machine according to claim 1, characterized in that: The frame (1) is also rotatably connected to two support rollers (6), and the support rollers (6) are used to abut against the outer side wall of the screen barrel (2).
7. The drum sand screening machine according to claim 1, characterized in that: A feed hopper (5) is also provided on the frame (1), and an outlet of the feed hopper (5) is located in the screen barrel (2).
8. The drum sand screening machine according to claim 7, characterized in that: The frame (1) is provided with a knocking member (7) for knocking the side wall of the hopper (5), and the knocking member (7) comprises a knocking motor (71) and a knocking rod (72). The knocking motor (71) is provided on the frame (1), and the knocking rod (72) is provided on the output shaft of the knocking motor (71).