Gravel screening machine
By introducing a primary screening structure and a reinforcing structure into the screening machine, the problems of screen wear and material mixing are solved, achieving a long service life of the screen plate and efficient separation.
Patent Information
- Application Number
- CN202423010525.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-06
AI Technical Summary
The screens of existing screening machines are prone to wear after prolonged use, requiring frequent maintenance, and the screened materials are easily mixed.
A sand and gravel screening machine was designed, comprising a primary screening structure and a reinforcing structure. The primary screening structure filters out large perlite particles through the primary screening frame, reducing screen plate wear. The reinforcing structure improves the screen plate's compressive strength through side rods, reinforcing ribs, and rotating rods, and is equipped with multiple discharge pipes to prevent material mixing.
It extends the service life of the sieve plate, avoids frequent maintenance, and ensures that the screened materials are separated according to size without confusion.
Smart Images
Figure CN223543474U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of perlite ore processing, specifically, it relates to a sand and gravel screening machine. Background Technology
[0002] Perlite sand and gravel are raw mineral products made from perlite ore through processes such as crushing and screening.
[0003] Perlite is typically screened using a vibrating screen and a mesh screen. However, conventional screening machines require replacement of the mesh screen after prolonged use because the mesh is usually made of woven wire. During perlite screening, the mesh screen comes into contact with perlite of different sizes, and the heavier perlite sand and gravel can cause wear and tear on the mesh. After long-term use, the quality of the mesh screen will significantly decline, requiring maintenance after each use. Therefore, there is an urgent need for a sand and gravel screening machine that can be used for a long time without maintenance.
[0004] In view of this, this utility model is proposed. Utility Model Content
[0005] To solve the technical problem of requiring maintenance after each use in the prior art, the basic concept of the technical solution adopted by this utility model is as follows:
[0006] A sand and gravel screening machine, comprising:
[0007] The outer shell is a hollow rectangular tube with an open top, and support legs are symmetrically fixed at the bottom of the outer shell;
[0008] The sieve plate is movably connected in the middle section of the outer shell cavity. Multiple sieve holes are evenly opened on the top of the sieve plate. The sieve holes are circular holes and can divide the outer shell cavity into two spaces.
[0009] The primary screening structure is located inside the outer shell cavity. The primary screening structure can reduce the workload of the screen plate. The primary screening structure includes: fixed rods, primary screening frame and primary screening groove. The fixed rods are symmetrically fixed to both sides of the cavity inside the outer shell. The primary screening frame is movably connected to the top of the symmetrical fixed rods. The primary screening groove is opened at the top of the primary screening frame. There is a gap between the bottom of the primary screening frame and the top of the screen plate.
[0010] In a preferred embodiment of this utility model, the fixed rod is a rectangular rod, the size of the primary screening frame is the same as that of the sieve plate, the primary screening trough is a rectangular trough, and multiple primary screening troughs are evenly opened on the top of the primary screening frame. The primary screening frame and the sieve plate are placed obliquely inside the outer shell cavity, and the primary screening frame and the sieve plate are parallel.
[0011] In a preferred embodiment of this utility model, the primary screening structure further includes a guide plate, a support block, and a locking block. The guide plate is fixedly connected to the top of the primary screening frame, the support block is fixedly connected to the wall surfaces of the symmetrical fixed rods facing each other, and the locking block is fixedly connected to the top of the support block. The locking block is a right-angled triangular block. The same support block and locking block are provided on the wall surface of each fixed rod. The locking block can be locked into the first primary screening slot on both sides of the primary screening frame.
[0012] In a preferred embodiment of this utility model, a reinforcing structure is also provided inside the cavity of the outer shell. The reinforcing structure includes side rods, reinforcing ribs, alignment blocks, rotating rods, and slots. The side rods are symmetrically fixedly connected to both sides of the cavity of the outer shell at the bottom of the sieve plate. The reinforcing ribs are fixedly connected between the symmetrical side rods. The alignment blocks are fixedly connected to the top of both ends of the side rods. The rotating rods are rotatably connected to the top of the alignment blocks. The slots are opened on both sides of the sieve plate.
[0013] In a preferred embodiment of this utility model, multiple identical reinforcing ribs are evenly arranged between the symmetrical side bars. The reinforcing ribs are semi-circular rods, and the plane of the reinforcing ribs can contact the bottom of the sieve plate.
[0014] In a preferred embodiment of this utility model, the slots are symmetrically opened on each side wall of the sieve plate. The slots can be adapted to the size of the alignment block. The rotating rod is rotatably connected to the top of the uppermost alignment block. The rotating rod is in the shape of a capsule and its length is consistent with the top of the alignment block.
[0015] In a preferred embodiment of this utility model, a first discharge pipe is fixedly connected to the lowest point of the inclined surface of the primary screening frame on the outer shell wall. The first discharge pipe is a pipe with a concave cross-section. A second discharge pipe is fixedly connected to the bottom of the first discharge pipe. The second discharge pipe is a hollow right-angled triangular pipe. A third discharge pipe is fixedly connected to the bottom of the second discharge pipe. The third discharge pipe is a hollow right-angled triangular pipe with the same dimensions as the second discharge pipe. The cavity of the second discharge pipe can communicate with the space inside the outer shell cavity at the top of the screen plate. The cavity of the third discharge pipe can communicate with the distance between the bottom of the screen plate and the bottom of the outer shell cavity.
[0016] Compared with the prior art, the present invention has the following advantages:
[0017] 1. By setting up a primary screening structure, larger perlite stones in the perlite sand to be screened can be directly filtered out. The primary screening structure filters out larger perlite stones that may damage the screen plate directly through the primary screening frame, avoiding the problem of perlite sand damaging the top of the screen plate during screening. Therefore, there is no need to maintain the screen plate of the device after each screening.
[0018] 2. By setting up a reinforced structure, not only can the compressive strength of the screen plate be improved, thereby increasing the service life of the screen plate, but the screen plate can also be easily and quickly disassembled.
[0019] 3. By setting up a first discharge pipe, a second discharge pipe, and a third discharge pipe, the device can discharge materials at different locations, thereby effectively preventing the problem of re-mixing of perlite sand and gravel after screening.
[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0021] In the attached diagram:
[0022] Figure 1 This is a perspective view of the present utility model;
[0023] Figure 2 This is a perspective view of the inner cavity of the outer shell of this utility model;
[0024] Figure 3 This is an exploded view of the primary screening frame and fixing rod of this utility model;
[0025] Figure 4 This is an enlarged view of section A of this utility model;
[0026] Figure 5 This is an exploded view of the sieve plate and side rod of this utility model.
[0027] In the diagram: 20. Outer shell; 21. Screen plate; 22. Screen hole; 23. First discharge pipe; 24. Second discharge pipe; 25. Third discharge pipe; 30. Fixing rod; 31. Primary screening frame; 32. Primary screening trough; 33. Guide plate; 34. Support block; 35. Clamping block; 40. Side rod; 41. Reinforcing rib; 42. Alignment block; 43. Rotating rod; 44. Slot. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0029] like Figure 1 , Figure 2 and Figure 5 As shown, a sand and gravel screening machine has a shell 20, which is a hollow rectangular tube with an open top, and support legs are symmetrically fixedly installed at the bottom of the shell 20.
[0030] The sieve plate 21 is movably connected to the middle section of the cavity of the outer shell 20. Multiple sieve holes 22 are evenly opened on the top of the sieve plate 21. The sieve holes 22 are circular holes and can divide the cavity of the outer shell 20 into two spaces. A vibrating motor for vibrating screening is installed in the cavity of the outer shell 20. The vibrating motor is electrically connected to the corresponding power supply. The vibrating motor is installed on the top of the sieve plate 21. This is existing technology and will not be described in detail here.
[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the primary screening structure is set inside the cavity of the outer shell 20. The primary screening structure can reduce the workload of the screen plate 21. The primary screening structure includes: fixed rods 30, primary screening frame 31 and primary screening groove 32. The fixed rods 30 are symmetrically fixedly connected to both sides of the cavity of the outer shell 20. The primary screening frame 31 is movably connected to the top of the symmetrical fixed rods 30. The primary screening groove 32 is opened at the top of the primary screening frame 31. There is a gap between the bottom of the primary screening frame 31 and the top of the screen plate 21.
[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the fixed rod 30 is a rectangular rod, the size of the primary screening frame 31 is the same as that of the sieve plate 21, the primary screening groove 32 is a rectangular groove, and multiple primary screening grooves 32 are evenly opened on the top of the primary screening frame 31. The primary screening frame 31 and the sieve plate 21 are obliquely placed in the cavity of the outer shell 20 and are parallel to each other. The primary screening structure also includes a guide plate 33, a support block 34 and a locking block 35. The guide plate 33 is fixedly connected to the top of the primary screening frame 31, the support block 34 is fixedly connected to the wall surface of the symmetrical fixed rods 30 facing each other, and the locking block 35 is fixedly connected to the top of the support block 34. The locking block 35 is a right-angled triangular block. The same support block 34 and locking block 35 are provided on the wall surface of each fixed rod 30. The locking block 35 can be locked into the first primary screening groove 32 on both sides of the primary screening frame 31.
[0033] In practical use, the perlite sand to be screened is poured from the top of the outer shell 20 into the highest point of the primary screening frame 31, and the power of the vibration motor in the cavity of the outer shell 20 is turned on. The vibration motor can drive the screen plate 21 and the outer shell 20 to vibrate. The outer shell 20 can drive the primary screening frame 31 to vibrate at the same time. After the perlite sand falls into the top of the primary screening frame 31, it will move along the inclined surface of the top of the primary screening frame 31. Then, the larger perlite will slide down the top of the primary screening frame 31, while the normal and smaller perlite will fall from the primary screening frame 31 to the top of the screen plate 21. At this time, the vibrating screen plate 21 can vibrate and screen the perlite sand at the top of the screen plate 21. The smaller perlite will fall from the screen hole 22 to the bottom of the cavity of the outer shell 20 and move. When it is necessary to change the screen hole 22 of different diameters, the primary screening frame 31 can be directly pulled off from the top of the fixed rod 30 so that the locking block 35 is no longer stuck in the primary screening groove 32 and the primary screening frame 31 can be removed.
[0034] In summary, by setting up a primary screening structure, larger perlite particles in the perlite sand to be screened can be directly filtered out. The primary screening structure directly filters out larger perlite particles that could damage the screen plate 21 through the primary screening frame 31, avoiding the problem of perlite sand damaging the top of the screen plate 21 during screening. Therefore, it is not necessary to maintain the screen plate 21 of the device after each screening.
[0035] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the cavity of the outer shell 20 is also provided with a reinforcing structure, which includes side rods 40, reinforcing ribs 41, alignment blocks 42, rotating rods 43 and slots 44. The side rods 40 are symmetrically fixedly connected to both sides of the cavity of the outer shell 20 at the bottom of the sieve plate 21. The reinforcing ribs 41 are fixedly connected between the symmetrical side rods 40. The alignment blocks 42 are fixedly connected to the top of both ends of the side rods 40. The rotating rods 43 are rotatably connected to the top of the alignment blocks 42. The slots 44 are opened on both sides of the sieve plate 21. Multiple identical reinforcing ribs 41 are evenly arranged between the symmetrical side rods 40. The reinforcing ribs 41 are semi-circular rods. The plane of the reinforcing ribs 41 can contact the bottom of the sieve plate 21. The slots 44 are symmetrically opened on each side of the sieve plate 21. The slots 44 can adapt to the size of the alignment blocks 42. The rotating rods 43 are rotatably connected to the top of the uppermost alignment block 42. The rotating rods 43 are capsule-shaped blocks. The length of the rotating rods 43 is the same as the top of the alignment blocks 42.
[0036] In practical use, when it is necessary to disassemble the screen plate 21, rotate the rotating rod 43 until it does not contact the top of the screen plate 21, and then the screen plate 21 can be directly disassembled from the top of the symmetrical side rod 40. When the screen plate 21 is installed on the top of the symmetrical side rod 40, the bottom of the screen plate 21 will contact the wall surface of all the reinforcing ribs 41.
[0037] In summary, by setting up a reinforced structure, not only can the compressive strength of the screen plate 21 be improved, thereby increasing the service life of the screen plate 21, but the screen plate 21 can also be quickly and easily disassembled.
[0038] like Figure 1 As shown, a first discharge pipe 23 is fixedly connected to the wall of the outer shell 20 at the lowest point of the inclined surface of the primary screening frame 31. The first discharge pipe 23 is a pipe with a concave cross section. A second discharge pipe 24 is fixedly connected to the bottom of the first discharge pipe 23. The second discharge pipe 24 is a hollow right-angled triangular pipe. A third discharge pipe 25 is fixedly connected to the bottom of the second discharge pipe 24. The third discharge pipe 25 is a hollow right-angled triangular pipe with the same dimensions as the second discharge pipe 24. The cavity of the second discharge pipe 24 can communicate with the cavity of the outer shell 20 at the top of the screen plate 21. The cavity of the third discharge pipe 25 can communicate with the distance between the bottom of the screen plate 21 and the bottom of the cavity of the outer shell 20.
[0039] In practical use, when large-sized perlite sand slides down from the top of the primary screen frame 31, it will eventually fall onto the top of the first discharge pipe 23 and then move out of the device as the top of the first discharge pipe 23 moves out of the device. Meanwhile, the fine perlite sand filtered by the screen plate 21 will move to the third discharge pipe 25 along the bottom of the cavity of the outer shell 20 and then be discharged from the device from the third discharge pipe 25. The normal-sized perlite sand will move to the second discharge pipe 24 along the top of the screen plate 21 and then be discharged from the device from the second discharge pipe 24.
[0040] In summary, by setting the first discharge pipe 23, the second discharge pipe 24 and the third discharge pipe 25, the discharge points are located at different positions when the device discharges materials, thereby effectively preventing the problem of re-mixing of perlite sand and gravel after screening.
[0041] Working principle: The perlite sand to be screened is poured from the top of the outer shell 20 into the highest point of the primary screening frame 31. The power supply of the vibrating motor inside the outer shell 20 is turned on, which drives the screen plate 21 and the outer shell 20 to vibrate. The outer shell 20 drives the primary screening frame 31 to vibrate simultaneously. After falling into the top of the primary screening frame 31, the perlite sand moves along the inclined surface of the top of the primary screening frame 31. Larger perlite pieces slide downwards along the top of the primary screening frame 31, while normal-sized and smaller perlite pieces fall from the primary screening frame 31 to the top of the screen plate 21. At this time, the vibrating screen plate 21 can... The perlite sand at the top is vibrated and screened. Smaller perlite sand will fall through the screen holes 22 to the bottom of the outer shell 20 and move there. Larger perlite sand will eventually fall on the top of the first discharge pipe 23 as it slides down from the top of the primary screen frame 31. Then, it will move out of the device along with the top of the first discharge pipe 23. The fine perlite sand filtered by the screen plate 21 will move along the bottom of the outer shell 20 to the third discharge pipe 25 and then be discharged from the device. The normal-sized perlite sand will move along the top of the screen plate 21 to the second discharge pipe 24 and then be discharged from the device.
[0042] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A sand and gravel screening machine, characterized in that, include: The outer shell (20) is a hollow rectangular tube with an open top, and the bottom of the outer shell (20) is symmetrically fixed with support legs; The sieve plate (21) is movably connected to the middle section of the cavity of the outer shell (20). Multiple sieve holes (22) are evenly opened on the top of the sieve plate (21). The sieve holes (22) are circular holes. The sieve holes (22) can divide the cavity of the outer shell (20) into two spaces. The primary screening structure is set inside the cavity of the outer shell (20). The primary screening structure can reduce the workload of the sieve plate (21). The primary screening structure includes: a fixed rod (30), a primary screening frame (31) and a primary screening groove (32). The fixed rod (30) is symmetrically fixedly connected to both sides of the cavity of the outer shell (20). The primary screening frame (31) is movably connected to the top of the symmetrical fixed rod (30). The primary screening groove (32) is opened on the top of the primary screening frame (31). There is a gap between the bottom of the primary screening frame (31) and the top of the sieve plate (21).
2. The sand and gravel screening machine according to claim 1, characterized in that, The fixed rod (30) is a rectangular rod. The size of the primary screening frame (31) is the same as that of the sieve plate (21). The primary screening trough (32) is a rectangular trough. Multiple primary screening troughs (32) are evenly opened on the top of the primary screening frame (31). The primary screening frame (31) and the sieve plate (21) are obliquely placed in the cavity of the outer shell (20). The primary screening frame (31) and the sieve plate (21) are parallel.
3. The sand and gravel screening machine according to claim 1, characterized in that, The primary screening structure also includes a guide plate (33), a support block (34), and a locking block (35). The guide plate (33) is fixedly connected to the top of the primary screening frame (31). The support block (34) is fixedly connected to the wall surfaces of the symmetrical fixed rods (30) facing each other. The locking block (35) is fixedly connected to the top of the support block (34). The locking block (35) is a right-angled triangular block. The same support block (34) and locking block (35) are provided on the wall surface of each fixed rod (30). The locking block (35) can be locked into the first primary screening groove (32) on both sides of the primary screening frame (31).
4. A sand and gravel screening machine according to claim 1, characterized in that, The cavity of the outer shell (20) is also provided with a reinforcing structure, which includes side rods (40), reinforcing ribs (41), alignment blocks (42), rotating rods (43) and slots (44). The side rods (40) are symmetrically fixedly connected to both sides of the cavity of the outer shell (20) at the bottom of the sieve plate (21). The reinforcing ribs (41) are fixedly connected between the symmetrical side rods (40). The alignment blocks (42) are fixedly connected to the top of both ends of the side rods (40). The rotating rods (43) are rotatably connected to the top of the alignment blocks (42). The slots (44) are opened on both sides of the sieve plate (21).
5. A sand and gravel screening machine according to claim 4, characterized in that, Multiple identical reinforcing ribs (41) are evenly arranged between the symmetrical side bars (40). The reinforcing ribs (41) are semi-circular rods, and the plane of the reinforcing ribs (41) can contact the bottom of the sieve plate (21).
6. A sand and gravel screening machine according to claim 4, characterized in that, The slots (44) are symmetrically opened on each side wall of the sieve plate (21). The slots (44) can be adapted to the size of the alignment block (42). The rotating rod (43) is rotatably connected to the top of the uppermost alignment block (42). The rotating rod (43) is a capsule-shaped block, and the length of the rotating rod (43) is consistent with the top of the alignment block (42).
7. A sand and gravel screening machine according to claim 1, characterized in that, The outer shell (20) is fixedly connected to the lowest point of the inclined surface of the primary screening frame (31) with a first discharge pipe (23). The first discharge pipe (23) is a pipe with a concave cross section. The bottom of the first discharge pipe (23) is fixedly connected to a second discharge pipe (24). The second discharge pipe (24) is a hollow right-angled triangle. The bottom of the second discharge pipe (24) is fixedly connected to a third discharge pipe (25). The third discharge pipe (25) is a hollow right-angled triangle with the same size as the second discharge pipe (24). The cavity of the second discharge pipe (24) can communicate with the cavity of the outer shell (20) at the top of the sieve plate (21). The cavity of the third discharge pipe (25) can communicate with the distance between the bottom of the sieve plate (21) and the bottom of the cavity of the outer shell (20).