Material screening device for cement mixing plant

Abstract

A material screening device for a cement mixing plant comprises a box body, a feeding port is formed in the top of the box body, a first discharging port is formed in one side of the box body, a first inclined plate is fixedly installed at the bottom of the inner wall of the first discharging port, and two inclined second inclined plates distributed up and down are fixedly installed in a second box body; the box body is provided with two first discharge ports corresponding to the first inclined plates, the box body is provided with two second discharge ports corresponding to the second inclined plates, and the second inclined plates are respectively provided with a through groove, and the box body is characterized in that first sieve plates are respectively and movably arranged in the through grooves through a plurality of springs, and second sieve plates are respectively and rotatably arranged below the first sieve plates through bearings; and a plurality of identical and aligned sieve holes are respectively formed in the first sieve plate and the second sieve plate in the same through groove. The vibrating screen is simple in structure, ingenious in conception and capable of adjusting the aperture of the screen holes, so that the first screen plate and the second screen plate can screen both stones and sand, market requirements can be met, and the vibrating screen is suitable for popularization.

Description

Technical Field

[0001] The utility model belongs to the field of material screening, in particular to a material screening device used in a cement mixing station. Background Art

[0002] Mixing stations are mainly used in concrete construction projects, and their main purpose is to mix concrete. Ordinary concrete refers to concrete with cement as the main cementing material, mixed with water, sand, gravel, and chemical admixtures and mineral admixtures when necessary, in appropriate proportions, and then mixed. The size of gravel and sand will affect the density and compressive strength of concrete, so the raw materials need to be screened before mixing, and the sand and gravel need to be screened according to different sizes so that sand and gravel of different sizes can be selected according to the required concrete strength. The National Intellectual Property Administration issued an authorization announcement on May 18, 2021, with an authorization announcement number of CN213223130U: "A material screening device for a cement mixing station". The patent discloses a device for screening gravel, but the size of the aperture on the screening net in the device cannot be adjusted, so only gravel can be screened, not sand. Therefore, we designed a material screening device for a cement mixing station. Utility Model Content

[0003] The utility model provides a material screening device for a cement mixing station, which is used to solve the defects in the prior art.

[0004] The utility model is realized through the following technical solutions:

[0005] A material screening device for a cement mixing station comprises a box body, a feeding port is provided on the top of the box body, a first discharging port is provided on one side of the box body, a first inclined plate is fixedly installed at the bottom of the inner wall of the first discharging port, two second inclined plates with upper and lower distribution and inclination are fixedly installed in the second box body, two second discharging ports are provided on the box body corresponding to the second inclined plates, and through grooves are provided on the second inclined plates, characterized in that: the first sieve plates are movably installed in the through grooves respectively through a plurality of springs, the second sieve plates are rotatably installed below the first sieve plates respectively through bearings, a plurality of completely identical and aligned sieve holes are respectively provided on the first sieve plates and the second sieve plates located in the same through grooves, the apertures of the sieve holes on the upper first sieve plates and the second sieve plates are larger than the apertures of the sieve holes on the lower first sieve plates and the second sieve plates, the first sieve plates are respectively provided with a limiting device for limiting the rotation of the corresponding second sieve plates, the lower part of the second sieve plates are respectively provided with a first rotating shaft for rotation, the outer periphery of the first rotating shaft is respectively fixedly installed with a shifting rod, the shifting rod can be in contact with the corresponding second sieve plates, and a driving device for driving the two first rotating shafts to rotate is provided on the box body.

[0006] In the material screening device for a cement mixing station as described above, the limiting device includes bolts, through holes corresponding to the bolts are respectively provided on the first screen plate, and two threaded grooves are respectively provided on the second screen plate, and the bolts pass through the corresponding through holes and are threadedly connected to the corresponding threaded grooves.

[0007] As described above, a material screening device for a cement mixing station, the driving device includes a first gear, the first gear corresponds to the first rotating shaft one by one, one end of the first rotating shaft extends out of the box body, the first gear is fixedly mounted on the corresponding end of the first rotating shaft extending out of the box body, the two first gears are connected by a second gear transmission, the second gear is rotatably mounted on the box body through a bearing, one of the first gears is fixedly connected to the output shaft of the motor, and the motor is fixedly mounted on the box body.

[0008] In the material screening device for a cement mixing station as described above, a funnel is fixedly mounted on the inner wall of the feed inlet.

[0009] As described above, in a material screening device for a cement mixing plant, a second rotating shaft is rotatably provided above the first screen plate, and a plurality of baffles are fixedly installed on the outer circumference of the second rotating shaft, and the front and rear ends of the baffles are respectively in sliding contact with the corresponding inner walls of the box body.

[0010] In the material screening device for a cement mixing plant as described above, arc plates are fixedly provided above the second discharge ports, the arc plates are fixedly mounted on the box body, and the outer sides of the baffles are in sliding contact with the inner circumferences of the corresponding arc plates.

[0011] In the material screening device for a cement mixing station as described above, guide plates are fixedly provided at the second discharge ports, the guide plates are fixedly mounted on the box body, and the right ends of the two guide plates extend to different positions respectively.

[0012] In the material screening device for a cement mixing station as described above, flexible cloths are fixedly provided in the gaps formed between the through slots and the corresponding first screen plates, and the flexible cloths are located above the corresponding springs.

[0013] In the material screening device for a cement mixing plant as described above, a cleaning port is provided on the front side of the box body, and a box door is provided at the cleaning port, so that the box door can close the cleaning port.

[0014] The utility model has the advantages of simple structure, ingenious design, and the aperture of the sieve hole can be adjusted, so the first sieve plate and the second sieve plate can screen both gravel and sand, can meet market demand, and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a structural schematic diagram of the utility model; Figure 2 yes Figure 1 Rear view of Figure 3 yes Figure 1 A-direction view; Figure 4 yes Figure 2 Rear view of Figure 5 yes Figure 1 A partial enlarged view of Ⅰ.

[0017] Figure numerals: 1, box body, 2, feed port, 3, first discharge port, 4, second inclined plate, 5, through groove, 6, spring, 7, first screen plate, 8, second screen plate, 9, sieve hole, 10, first rotating shaft, 11, lever, 12, first inclined plate, 13, second discharge port, 20, bolt, 21, through hole, 22, threaded groove, 30, first gear, 31, second gear, 32, motor, 40, funnel, 50, second rotating shaft, 51, baffle, 60, arc plate, 70, guide plate, 80, flexible cloth, 90, cleaning port. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] A material screening device for a cement mixing station, such as Figure 1 , 2As shown in , 3, 4, and 5, it includes a box body 1, a feed port 2 is provided on the top of the box body 1, a first discharge port 3 is provided on one side of the box body 1, a first inclined plate 12 is fixedly installed at the bottom of the inner wall of the first discharge port 3, the inner wall of the box body 1 is fixedly connected to the outer wall of the first inclined plate 12, two second inclined plates 4 distributed up and down and inclined are fixedly installed in the second box body 1, two second discharge ports 13 are provided on the box body 1 corresponding to the second inclined plates 4, the outer walls of the second inclined plates 4 are respectively fixedly connected to the inner wall of the box body 1, the bottom surface of the inner wall of the second discharge port 13 coincides with the top surface of the corresponding second inclined plates 4, and the second inclined plates 4 are respectively provided with through grooves 5, which are characterized in that: a first sieve plate 7 is movably installed in the through groove 5 by means of a plurality of springs 6, the first sieve plate 7 is a rectangular parallelepiped, and the bottom of the first sieve plate 7 is respectively The second sieve plate 8 is rotatably mounted by bearings, the second sieve plate 8 is a cylinder, and a plurality of identical and aligned sieve holes 9 are respectively provided on the first sieve plate 7 and the second sieve plate 8 located in the same through slot 5, the aperture of the sieve holes 9 on the upper first sieve plate 7 and the second sieve plate 8 is larger than the aperture of the sieve holes 9 on the lower first sieve plate 7 and the second sieve plate 8, and the first sieve plate 7 is respectively provided with a limit device for limiting the rotation of the corresponding second sieve plate 8, and the lower part of the second sieve plate 8 is respectively provided with a first rotating shaft 10, and the front and rear ends of the first rotating shaft 10 are respectively rotatably mounted on the box body 1 through bearings, and the outer periphery of the first rotating shaft 10 is respectively fixed with a lever 11, and the lever 11 can be in contact with the corresponding second sieve plate 8, and the box body 1 is provided with a driving device for driving the two first rotating shafts 10 to rotate. The utility model has a simple structure and an ingenious design, and can adjust the aperture of the sieve hole 9, so the first sieve plate 7 and the second sieve plate 8 can not only screen stones, but also screen sand, can meet market demand, and is suitable for promotion.When the stones are to be screened, the stones to be screened are poured into the box body 1 through the feed port 2, and the stones to be screened fall on the first sieve plate 7 at the top, and the driving device is started. The driving device drives the two first rotating shafts 10 to rotate, and the rotation of the first rotating shaft 10 drives the corresponding lever 11 to rotate. During the rotation of the lever 11, the corresponding first sieve plate 7 and the second sieve plate 8 are driven to move upward. When the lever 11 is separated from the corresponding second sieve plate 8, under the action of the spring 6, the corresponding first sieve plate 7 and the second sieve plate 8 move downward and reset. Under the continuous vibration of the first sieve plate 7 and the second sieve plate 8, the stones are screened. The stones with larger sizes that cannot pass through the sieve holes 9 on the top first sieve plate 7 and the second sieve plate 8 roll along the first sieve plate 7 and roll out of the box body 1 through the second discharge port 13 at the top, and the stones with smaller sizes that can pass through the sieve holes 9 on the top first sieve plate 7 and the second sieve plate 8 fall into the bottom first On the sieve plate 7; under the vibration of the first sieve plate 7 and the second sieve plate 8 at the bottom, the stones with larger sizes that cannot pass through the sieve holes 9 on the first sieve plate 7 and the second sieve plate 8 roll along the first sieve plate 7 at the bottom, and then are discharged from the box 1 through the second discharge port 13 at the bottom, and the stones with smaller sizes that can pass through the sieve holes 9 on the first sieve plate 7 and the second sieve plate 8 fall onto the first inclined plate 12, then roll along the first inclined plate 12, and finally are discharged from the box 1 through the first discharge port 3, thereby dividing the stones into three categories of different sizes according to their sizes; similarly, when the sand is to be screened, the limit device on the second sieve plate 8 is released, and then the second sieve plate 8 is rotated so that the sieve holes 9 on the second sieve plate 8 are misaligned with the corresponding sieve holes 9 on the first sieve plate 7, so that the space enclosed by the sieve holes 9 on the corresponding first sieve plate 7 and the second sieve plate 8 becomes smaller, thereby facilitating the screening of the sand.

[0020] Specifically, as shown in the figure, the limiting device of this embodiment includes a bolt 20, through holes 21 are respectively provided on the first screen plate 7 corresponding to the bolt 20, and two thread grooves 22 are respectively provided on the second screen plate 8, and the bolt 20 passes through the corresponding through holes 21 and is threadedly connected with the corresponding thread grooves 22. The bolt 20 is screwed forward to move the bolt 20 out of one of the corresponding thread grooves 22, at which time the bolt 20 no longer limits the second screen plate 8, and the second screen plate 8 can rotate. After the second screen plate 8 is rotated by a certain angle, the bolt 20 is aligned with the other corresponding thread groove 22, and then the bolt 20 is screwed in the reverse direction to move the bolt 20 downward and threadedly connected with the aligned thread grooves 22, so as to limit the second screen plate 8.

[0021] Specifically, as shown in the figure, the driving device of this embodiment includes a first gear 30, the first gear 30 corresponds to the first rotating shaft 10 one by one, one end of the first rotating shaft 10 extends out of the housing 1, one end of the first rotating shaft 10 passes through the reserved hole on the housing 1, and is rotatably mounted in the housing 1 through a sealed bearing, the first gear 30 is fixedly mounted on the corresponding end of the first rotating shaft 10 extending out of the housing 1, the first gear 30 is coaxially arranged with the corresponding first rotating shaft 10, the two first gears 30 are connected by a second gear 31, the second gear 31 is rotatably mounted on the housing 1 through a bearing, one of the first gears 30 is fixedly connected to the output shaft of the motor 32, the output shaft of the motor 32 is coaxially arranged with the corresponding first gear 30, and the motor 32 is fixedly mounted on the housing 1. Start the motor 32, the output shaft of the motor 32 rotates to drive the corresponding first gear 30 to rotate, the first gear 30 rotates to drive another first gear 30 to rotate through the second gear 31, and the first gear 30 rotates to drive the corresponding first rotating shaft 10 to rotate.

[0022] Further, as shown in the figure, a funnel 40 is fixedly installed on the inner wall of the feed port 2 in this embodiment, and the funnel 40 is coaxially arranged with the feed port 2. The inner diameter of the upper end of the funnel 40 is larger than the inner diameter of the feed port 2, so it is more convenient to pour materials into the box body 1 through the funnel 40.

[0023] Further, as shown in the figure, in this embodiment, a second rotating shaft 50 is rotatably provided above the first sieve plate 7, and the front and rear ends of the second rotating shaft 50 are rotatably mounted on the box body 1 through bearings, and a plurality of baffles 51 are fixedly mounted on the outer periphery of the second rotating shaft 50. In this embodiment, four baffles 51 are fixedly mounted on the outer periphery of the second rotating shaft 50, and the baffles 51 on the same second rotating shaft 50 are evenly distributed around the axis of the second rotating shaft 50, and the front and rear ends of the baffle 51 are in sliding contact with the corresponding inner wall of the box body 1 respectively. When the material rolls along the first screen plate 7 toward the second discharge port 13, the material cannot roll out of the box body 1 through the second discharge port 13 due to the obstruction of the baffle 51, thereby preventing the material from rolling out of the box body 1 through the second discharge port 13 before being screened, thereby allowing the material to continue to be screened on the first screen plate 7; when a large amount of material is accumulated on the left side of the baffle 51, the baffle 51 and the second rotating shaft 50 are pushed to rotate under the action of the gravity of the material itself, and the baffle 51 rotates to cause the material on the first screen plate 7 to roll out of the box body 1 through the second discharge port 13.

[0024] Further, as shown in the figure, in this embodiment, an arc plate 60 is fixedly provided above the second discharge port 13, and the arc plate 60 is fixedly mounted on the box body 1, and the front and rear sides and the right side of the arc plate 60 are fixedly connected to the inner wall of the box body 1, and the outer side of the baffle 51 is in sliding contact with the inner circumference of the corresponding arc plate 60. The arc plate 60 can prevent the material on the first screen plate 7 from passing over the baffle 51 during the vibration process, and then splashing out of the box body 1 through the second discharge port 13.

[0025] Further, as shown in the figure, in this embodiment, guide plates 70 are fixedly provided at the second discharge port 13, and the guide plates 70 are fixedly mounted on the box body 1, and the right ends of the two guide plates 70 extend to different positions. The two guide plates 70 can guide the materials rolling out of the second discharge port 13 to different positions to prevent the two materials of different sizes from being mixed together after screening.

[0026] Further, as shown in the figure, in the present embodiment, a flexible cloth 80 is fixedly provided in the gap formed between the through slot 5 and the corresponding first sieve plate 7, the inner wall of the flexible cloth 80 is fixedly connected to the top of the outer wall of the corresponding first sieve plate 7, the outer wall of the flexible cloth 80 is fixedly connected to the top of the inner wall of the corresponding through slot 5, and the flexible cloth 80 is located above the corresponding spring 6. The flexible cloth 80 can prevent the material from falling through the gap between the through slot 5 and the second sieve plate 7.

[0027] Furthermore, as shown in the figure, a cleaning port 90 is provided at the front side of the box body 1 of the present embodiment, and a box door is provided at the cleaning port 90, which is not shown in the figure, and the box door can close the cleaning port 90. The bolt 20 can be screwed by inserting a hand into the box body 1 through the cleaning port 90; the material stuck in the sieve hole 9 can also be cleaned through the cleaning port 90.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A material screening device for a cement mixing station, comprising a box body (1), a feed port (2) is provided at the top of the box body (1), a first discharge port (3) is provided at one side of the box body (1), a first inclined plate (12) is fixedly installed at the bottom of the inner wall of the first discharge port (3), two second inclined plates (4) which are distributed and inclined up and down are fixedly installed in the second box body (1), two second discharge ports (13) are provided on the box body (1) corresponding to the second inclined plates (4), and through grooves (5) are respectively provided on the second inclined plates (4), characterized in that: A first sieve plate (7) is movably mounted in the through slot (5) via a plurality of springs (6); a second sieve plate (8) is rotatably mounted below the first sieve plate (7) via a bearing; a plurality of identical and aligned sieve holes (9) are respectively provided on the first sieve plate (7) and the second sieve plate (8) located in the same through slot (5); the apertures of the sieve holes (9) on the upper first sieve plate (7) and the second sieve plate (8) are larger than the apertures of the sieve holes (9) on the lower first sieve plate (7) and the second sieve plate (8); a limiting device for limiting the rotation of the corresponding second sieve plate (8) is respectively provided on the first sieve plate (7); a first rotating shaft (10) is rotatably mounted below the second sieve plate (8); a shifting rod (11) is respectively fixedly mounted on the outer circumference of the first rotating shaft (10); the shifting rod (11) can abut against and contact with the corresponding second sieve plate (8); and a driving device for driving the two first rotating shafts (10) to rotate is provided on the box body (1).

2. A material screening device for a cement mixing station according to claim 1, characterized in that: The limiting device comprises a bolt (20), through holes (21) are respectively provided on the first screen plate (7) corresponding to the bolts (20), and two thread grooves (22) are respectively provided on the second screen plate (8), and the bolts (20) pass through the corresponding through holes (21) and are threadedly connected with the corresponding thread grooves (22).

3. The material screening device for a cement mixing station according to claim 1, characterized in that: The driving device comprises a first gear (30), the first gear (30) corresponds to the first rotating shaft (10) one by one, one end of the first rotating shaft (10) respectively extends out of the housing (1), the first gear (30) is fixedly mounted on the corresponding end of the first rotating shaft (10) extending out of the housing (1), the two first gears (30) are transmission-connected via a second gear (31), the second gear (31) is rotatably mounted on the housing (1) via a bearing, one of the first gears (30) is fixedly connected to the output shaft of a motor (32), and the motor (32) is fixedly mounted on the housing (1).

4. The material screening device for a cement mixing station according to claim 1, characterized in that: A funnel (40) is fixedly mounted on the inner wall of the feed port (2).

5. The material screening device for a cement mixing station according to claim 1, characterized in that: A second rotating shaft (50) is rotatably provided above the first sieve plate (7), and a plurality of baffles (51) are fixedly installed on the outer periphery of the second rotating shaft (50), and the front and rear ends of the baffles (51) are respectively in sliding contact with the corresponding inner walls of the box body (1).

6. A material screening device for a cement mixing station according to claim 5, characterized in that: An arc-shaped plate (60) is fixedly provided above each of the second discharge ports (13). The arc-shaped plates (60) are fixedly mounted on the box body (1). The outer side of the baffle (51) is in sliding contact with the inner circumference of the corresponding arc-shaped plate (60).

7. The material screening device for a cement mixing station according to claim 1, characterized in that: Guide plates (70) are fixedly provided at the second discharge ports (13), the guide plates (70) are fixedly mounted on the box body (1), and the right ends of the two guide plates (70) extend to different positions respectively.

8. The material screening device for a cement mixing station according to claim 1, characterized in that: A flexible cloth (80) is fixedly disposed in the gap formed between the through groove (5) and the corresponding first screen plate (7), and the flexible cloth (80) is located above the corresponding spring (6).

9. The material screening device for a cement mixing station according to claim 2, characterized in that: A cleaning opening (90) is provided on the front side of the box body (1), and a box door is provided at the cleaning opening (90), so that the cleaning opening (90) can be closed by the box door.

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