CN216174168U - Screening device for concrete raw materials - Google Patents
Screening device for concrete raw materials Download PDFInfo
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- CN216174168U CN216174168U CN202122843161.5U CN202122843161U CN216174168U CN 216174168 U CN216174168 U CN 216174168U CN 202122843161 U CN202122843161 U CN 202122843161U CN 216174168 U CN216174168 U CN 216174168U
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Abstract
The application relates to the technical field of concrete processing, in particular to a screening device for concrete raw materials, which comprises a screening box, wherein the upper side and the lower side of the screening box are respectively provided with a feeding hole and a discharging hole; two sieve plates which are sequentially arranged along the vertical direction are arranged in the screening box, and the diameter of the sieve hole on the sieve plate at the upper side is larger than that of the sieve hole on the sieve plate at the lower side; the sieve plate is arranged in a concave arc shape in the middle, and a crusher arranged on the screening box is arranged on the inner side of the sieve plate; the screening box is provided with a swing mechanism for driving the two sieve plates to swing synchronously. The application can improve the size uniformity of the concrete raw materials.
Description
Technical Field
The application relates to the technical field of concrete processing, in particular to a screening device for concrete raw materials.
Background
The concrete raw material screening machine is mainly used for screening sand in concrete raw materials.
Through retrieval, Chinese patent publication No. CN206747003U discloses an automatic screening machine for concrete raw materials, a first sieve plate and a second sieve plate for sequentially receiving a second feeding hole material body are obliquely arranged in a screening cavity, a first supporting plate and a second supporting plate are arranged in the screening cavity, one end of the first sieve plate is rotatably arranged on the first supporting plate through a first rotating shaft, a first gear linked with the first rotating shaft is sleeved on the first rotating shaft, a first permanent magnet is arranged on the lower surface of the other end of the first supporting plate through a first supporting rod, one end of the second sieve plate is rotatably arranged on the second supporting plate through a second rotating shaft, a second gear linked with the second rotating shaft is sleeved on the second rotating shaft, a second permanent magnet magnetically repelled with the first permanent magnet is arranged on the upper surface of the other end of the second sieve plate through a second supporting rod, the first gear and the second gear are linked through a chain, a crusher is arranged in the screening cavity, and a third feeding port of the crusher is arranged below the inclined end directions of the other ends of the first sieve plate and the second sieve plate.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the size of the concrete material crushed by the crusher may still be larger than the desired standard size, which affects the uniformity of the size of the concrete material discharged from the second discharge port, and thus, improvement is required.
SUMMERY OF THE UTILITY MODEL
In order to improve the big or small degree of consistency of concrete raw materials, this application provides a sieving mechanism for concrete raw materials.
The application provides a screening device for concrete raw materials adopts following technical scheme: a screening device for concrete raw materials comprises a screening box, wherein the upper side and the lower side of the screening box are respectively provided with a feeding hole and a discharging hole; two sieve plates which are sequentially arranged along the vertical direction are arranged in the screening box, and the diameter of the sieve hole on the sieve plate at the upper side is larger than that of the sieve hole on the sieve plate at the lower side; the sieve plate is arranged in a concave arc shape in the middle, and a crusher arranged on the screening box is arranged on the inner side of the sieve plate; the screening box is provided with a swing mechanism for driving the two sieve plates to swing synchronously.
By adopting the technical scheme, in the screening process of the concrete raw materials, the sieve plate is in the arc shape with the concave middle part, so the concrete raw materials falling on the sieve plate are gathered to the middle part of the sieve plate; the swing mechanism drives the two sieve plates to swing synchronously, so that the concrete raw materials with standard particle sizes pass through sieve holes in the sieve plates and are discharged from the discharge hole, the non-standard concrete raw materials are crushed by the crusher positioned on the inner side of the sieve plates in the swing process until the particle sizes of the concrete raw materials reach the standard particle sizes, and the size uniformity of the concrete raw materials is improved.
Optionally, the swing mechanism includes two horizontal shafts installed on the corresponding sieve plate and an air cylinder installed on the screening box, the horizontal shafts are rotatably connected to the screening box and sleeved with gears, the two gears are engaged with the same rack, and a piston rod of the air cylinder extends along the length direction of the rack and is connected to the rack.
Through adopting above-mentioned technical scheme, when the cylinder passes through the rack and drives the gear rotation, the gear will drive the sieve through the horizontal axis and swing on vertical face to the concrete raw materials of standard particle diameter passes the sieve and discharges from the discharge gate.
Optionally, both ends of the sieve plate are connected to the inner wall of the screening box through elastic ropes.
Through adopting above-mentioned technical scheme, the stretch cord has realized being connected of sieve and screening case, has improved the stability of sieve in the swing in-process.
Optionally, the both ends of sieve all are connected in the inner wall of screening case through sheltering from cloth, shelter from cloth and shield the clearance between sieve tip and screening incasement wall.
Through adopting above-mentioned technical scheme, shelter from cloth and make concrete raw materials at the swing with by the broken in-process be difficult for passing the clearance between sieve tip and the screening incasement wall, guaranteed that only the concrete raw materials of standard particle diameter can follow the discharge gate and discharge.
Optionally, the height of the shielding cloth gradually increases from the end of the screen plate to the inner wall of the screening box.
Through adopting above-mentioned technical scheme, the concrete raw materials that fall on sheltering from cloth will slide to the sieve along the upper surface that shelters from cloth on for the concrete raw materials is difficult for piling up on sheltering from cloth.
Optionally, the crusher comprises a motor installed on the screening box and a licker-in rotatably connected to the screening box, an output shaft of the motor and the licker-in are coaxially arranged and connected to the licker-in, and the licker-in is located on the inner side of the screen plate.
Through adopting above-mentioned technical scheme, when the motor drove licker-in rotatory, the licker-in will rotatory broken concrete raw materials that is located the sieve inboard for concrete raw materials reaches standard particle diameter.
Optionally, every the top of sieve all is equipped with the deflector of installing on the screening case, and the deflector that is located the upside is located the feed inlet under, and the deflector that is located the downside is located between two sieves, and the deflector is the arc setting of middle part epirelief, and the projection of the tip on the sieve of deflector is located between sieve tip and the sieve middle part.
Through adopting above-mentioned technical scheme, the concrete raw materials that get into from the feed inlet will be located the deflector direction of upside to the sieve tip that is located the upside, and the concrete raw materials that pass the upside sieve will be located the deflector direction of downside to the sieve tip that is located the downside, has reduced the gathering of concrete raw materials at the sieve middle part to the screening efficiency of concrete raw materials has been improved.
Optionally, a plurality of speed reduction plates which are arranged in a staggered manner are arranged on the upper surface of the guide plate.
Through adopting above-mentioned technical scheme, the speed reduction board can block the speed reduction to the concrete raw materials that fall on the deflector for the concrete raw materials falls on the sieve with less speed, so that the sieve mesh on the sieve is passed at the in-process of gathering to the sieve middle part to the concrete raw materials, has reduced the condition emergence of concrete raw materials gathering in the middle part of the sieve.
Drawings
FIG. 1 is a schematic diagram of the overall structure in the embodiment of the present application;
FIG. 2 is a schematic view showing the inside of a screen box in the embodiment of the present application;
fig. 3 is a schematic sectional structure view of the whole in the embodiment of the present application.
Reference numerals: 1. a screening box; 11. a feed inlet; 12. a discharge port; 2. a sieve plate; 21. an elastic cord; 22. a shielding cloth; 3. a swing mechanism; 31. a horizontal axis; 32. a gear; 33. a rack; 34. a cylinder; 4. a crusher; 41. a motor; 42. a licker-in; 5. a guide plate; 51. a speed reduction plate.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses sieving mechanism for concrete raw materials. As shown in figure 1, the screening device for the concrete raw materials comprises a screening box 1, wherein a feeding hole 11 is formed in the upper side of the screening box 1, the feeding hole 11 is in a flaring shape, and a discharging hole 12 is formed in the lower side of the screening box 1 in a funnel shape.
As shown in fig. 1 and 2, two sieve plates 2 arranged in sequence along the vertical direction are arranged in the screening box 1, and the diameter of the sieve hole on the sieve plate 2 positioned on the upper side is larger than that of the sieve plate 2 positioned on the lower side, so that the sieve plate 2 on the upper side is used for coarse screening of concrete raw materials, and the sieve plate 2 on the lower side is used for fine screening of the concrete raw materials. The sieve plate 2 is arranged in a concave arc shape at the middle part, so that the concrete raw materials falling onto the sieve plate 2 are gathered towards the middle part of the sieve plate 2.
Be equipped with swing mechanism 3 on the screening case 1, swing mechanism 3 includes that two are installed at the horizontal axis 31 that corresponds on the sieve 2 and install the cylinder 34 on screening case 1 lateral wall, the one end of horizontal axis 31 is rotated and is connected in screening case 1, the other end of horizontal axis 31 rotates and wears to locate screening case 1 and overlap and be equipped with gear 32, the meshing has the same rack 33 that is located the screening case 1 outside on two gear 32, rack 33 is vertical setting, the piston rod of cylinder 34 extends and is connected in rack 33 along the length direction of rack 33. When the cylinder 34 rotates the gear 32 through the rack 33, the gear 32 swings the screen plate 2 on the vertical plane through the horizontal shaft 31, so that the concrete raw material with the standard grain diameter passes through the screen plate 2 and is discharged from the discharge port 12.
The inboard of sieve 2 is equipped with breaker 4, and breaker 4 is including installing motor 41 and the licker-in 42 of rotating and connecting in the screening case 1 inner wall on the screening case 1 lateral wall, and the output shaft of motor 41 is the coaxial line with licker-in 42 and sets up and be connected in licker-in 42, and licker-in 42 is located the inboard of sieve 2. When the motor 41 drives the licker-in 42 to rotate, the licker-in 42 will rotate to crush the concrete material inside the screen plate 2 until the particle size of the concrete material reaches the standard particle size, and the concrete material reaching the standard particle size will pass through the screen plate 2 and be discharged from the discharge hole 12.
As shown in fig. 3, the top of each sieve plate 2 is provided with a guide plate 5 arranged on the inner side wall of the screening box 1, the guide plate 5 positioned on the upper side is positioned under the feeding hole 11, the guide plate 5 positioned on the lower side is positioned between the two sieve plates 2, the guide plate 5 is arranged in an arc shape protruding from the middle part, and the projection of the end part of the guide plate 5 on the sieve plate 2 is positioned between the end part of the sieve plate 2 and the middle part of the sieve plate 2. Concrete raw materials that get into from feed inlet 11 will be guided to 2 tip of sieve that are located the upside by deflector 5 that are located the upside, and the concrete raw materials that pass upside sieve 2 will be guided to 2 tip of sieve that are located the downside by deflector 5 that are located the downside, has reduced the gathering of concrete raw materials at 2 middle parts of sieve to the screening efficiency of concrete raw materials has been improved.
As shown in fig. 2, the upper surface of deflector 5 is equipped with a plurality of speed reduction plates 51 that are crisscross setting, and speed reduction plate 51 can block the speed reduction to the concrete raw materials that fall onto deflector 5 for the concrete raw materials falls onto sieve 2 with less speed, so that the sieve mesh on sieve 2 is passed at the in-process of gathering to sieve 2 middle parts to the concrete raw materials, has reduced the condition emergence of concrete raw materials gathering in sieve 2 middle parts.
As shown in fig. 3, both ends of the sieve plate 2 are connected to the inner wall of the screening box 1 through a plurality of elastic ropes 21, the elastic ropes 21 realize the connection between the sieve plate 2 and the screening box 1, and the stability of the sieve plate 2 in the swinging process is improved; both ends of sieve 2 all connect in the inner wall of screening case 1 through sheltering from cloth 22, shelter from cloth 22 and shield the clearance between 2 tip of sieve and screening case 1 inner wall for the concrete raw materials of wobbling on sieve 2, the concrete raw materials stirred by licker-in 42 and the concrete raw materials that drops from deflector 5 are all difficult for passing the clearance between 2 tip of sieve and the screening case 1 inner wall, guaranteed that the concrete raw materials of only standard particle diameter just can follow discharge gate 12 discharges.
The height of the shielding cloth 22 gradually increases from the end of the screen plate 2 to the inner wall of the screening box 1, so that the concrete raw material falling onto the shielding cloth 22 slides down to the screen plate 2 along the upper surface of the shielding cloth 22, and the concrete raw material is not easy to accumulate on the shielding cloth 22.
The implementation principle of the screening device for the concrete raw materials in the embodiment of the application is as follows: in the screening process of the concrete raw materials, the concrete raw materials guide the guide plate 5 to the end part of the sieve plate 2, the air cylinder 34 drives the gear 32 to rotate through the rack 33, the gear 32 drives the sieve plate 2 to swing on a vertical surface through the horizontal shaft 31, and the concrete raw materials smaller than the diameter of sieve holes on the sieve plate 2 pass through the sieve plate 2 and are discharged through the discharge hole 12; meanwhile, the motor 41 drives the licker-in 42 to rotate, the licker-in 42 rotates and crushes the concrete raw material positioned on the inner side of the sieve plate 2 until the particle size of the concrete raw material reaches the standard particle size, and the concrete raw material reaching the standard particle size passes through the sieve plate 2 and is discharged from the discharge hole 12, so that the size uniformity of the concrete raw material is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a sieving mechanism for concrete raw materials which characterized in that: comprises a screening box (1), wherein the upper side and the lower side of the screening box (1) are respectively provided with a feed inlet (11) and a discharge outlet (12); two sieve plates (2) which are sequentially arranged along the vertical direction are arranged in the screening box (1), and the diameter of the sieve hole on the sieve plate (2) positioned on the upper side is larger than that of the sieve hole on the sieve plate (2) positioned on the lower side; the sieve plate (2) is arranged in a concave arc shape at the middle part, and a crusher (4) arranged on the screening box (1) is arranged at the inner side of the sieve plate (2); the screening box (1) is provided with a swing mechanism (3) for driving the two sieve plates (2) to swing synchronously.
2. The screening apparatus for concrete raw materials according to claim 1, wherein: swing mechanism (3) include that two are installed horizontal axis (31) on corresponding sieve (2) and install cylinder (34) on screening case (1), horizontal axis (31) rotate to be connected in screening case (1) and the cover is equipped with gear (32), and the meshing has same rack (33) on two gear (32), and the piston rod of cylinder (34) extends and connects in rack (33) along the length direction of rack (33).
3. The screening apparatus for concrete raw materials according to claim 2, wherein: both ends of the sieve plate (2) are connected to the inner wall of the screening box (1) through elastic ropes (21).
4. The screening apparatus for concrete raw materials according to claim 1, wherein: both ends of the sieve plate (2) are connected to the inner wall of the screening box (1) through shielding cloth (22), and the shielding cloth (22) shields the gap between the end part of the sieve plate (2) and the inner wall of the screening box (1).
5. The screening apparatus for concrete raw materials according to claim 4, wherein: the height of the shielding cloth (22) gradually rises from the end part of the sieve plate (2) to the inner wall of the screening box (1).
6. The screening apparatus for concrete raw materials according to claim 1, wherein: the crusher (4) comprises a motor (41) arranged on the screening box (1) and a licker-in (42) rotatably connected to the screening box (1), an output shaft of the motor (41) and the licker-in (42) are coaxially arranged and connected to the licker-in (42), and the licker-in (42) is positioned on the inner side of the screen plate (2).
7. The screening apparatus for concrete raw materials according to claim 1, wherein: every the top of sieve (2) all is equipped with deflector (5) of installing on screening case (1), and deflector (5) that are located the upside are located feed inlet (11) under, and deflector (5) that are located the downside are located between two sieve (2), and deflector (5) are the arc setting of middle part epirelief, and the projection of the tip of deflector (5) on sieve (2) is located between sieve (2) tip and sieve (2) middle part.
8. The screening apparatus for concrete raw materials according to claim 7, wherein: the upper surface of the guide plate (5) is provided with a plurality of speed reducing plates (51) which are arranged in a staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122843161.5U CN216174168U (en) | 2021-11-18 | 2021-11-18 | Screening device for concrete raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122843161.5U CN216174168U (en) | 2021-11-18 | 2021-11-18 | Screening device for concrete raw materials |
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| Publication Number | Publication Date |
|---|---|
| CN216174168U true CN216174168U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122843161.5U Active CN216174168U (en) | 2021-11-18 | 2021-11-18 | Screening device for concrete raw materials |
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| CN (1) | CN216174168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463827A (en) * | 2022-10-08 | 2022-12-13 | 宜兴市瑞弘耐火材料有限公司 | Iron runner castable powder screening process and screening system thereof |
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2021
- 2021-11-18 CN CN202122843161.5U patent/CN216174168U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463827A (en) * | 2022-10-08 | 2022-12-13 | 宜兴市瑞弘耐火材料有限公司 | Iron runner castable powder screening process and screening system thereof |
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