Sand screening machine for civil construction

Abstract

The utility model belongs to the technical field of sand screening devices, and provides a civil construction sand screening machine which comprises a support assembly and a sand screening device, the support assembly comprises a supporting frame, a bottom frame and an inclined frame, a discharging hopper is fixedly installed at the top of the supporting frame, the bottom frame is fixed to one side of the supporting frame, a sand screening hopper is fixedly installed at the top of the supporting frame, and the inclined frame is fixed to the other side of the supporting frame; a conveying belt is installed between the bottom frame and the inclined frame and located below the sand screening hopper. The sand screening assembly comprises an assembling plate, a first motor, a rotating frame and a driving shaft; a cleaning assembly; through the arrangement of the support assembly, the sand screening assembly and the cleaning assembly, the function of rapidly screening sand can be achieved, the stone discharging direction is opposite to the sand discharging direction, stones and sand are prevented from being mixed again, the sand screening quality is guaranteed, the stones clamped in the screening holes can be automatically cleaned, the manual cleaning workload is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of sand screening devices, specifically a sand screening machine for civil engineering construction. Background Technology

[0002] Sand is a crucial building material in civil engineering construction. Its quality and particle size uniformity directly affect the performance of concrete, mortar, and the overall quality of the project. For example, in masonry, excessively large sand particles, if not screened, can compromise the bond strength between bricks. In concrete mixing, uneven sand particle size can lead to poor flowability and density, consequently affecting the structural strength and durability of the building. Traditional sand screening methods primarily include manual screening and simple mechanical screening.

[0003] Existing sand screening machines typically use fixed screens for screening. As the screening process proceeds, large stones and impurities can easily get stuck in the screen holes, leading to a decrease in screening efficiency. This requires frequent manual cleaning of the screens, wasting a lot of manpower and time.

[0004] To address the problems raised in the background art, those skilled in the art have proposed a sand screening machine for civil construction. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a sand screening machine for civil engineering construction, which solves the problem that existing sand screening machines typically use fixed screens for screening, and as the screening process proceeds, large particles of stones and impurities are easily stuck in the screen holes, leading to a decrease in sand screening efficiency.

[0006] A sand screening machine for civil engineering construction includes: a support assembly comprising a support frame, a base frame, and an inclined frame; a hopper is fixedly installed on the top of the support frame; the base frame is fixed to one side of the support frame, and a sand screening hopper is fixedly installed on the top of the support frame; the inclined frame is fixed to the other side of the support frame; a conveyor belt is installed between the base frame and the inclined frame, and the conveyor belt is located below the sand screening hopper.

[0007] The sand screening assembly includes an assembly plate, a first motor, a rotating frame, and a drive shaft. The assembly plate is fixed to the bottom wall of the sand screening hopper, and a number of support rods are fixedly connected between the drive shaft and the rotating frame. The first motor and the drive shaft are connected by a first rotating belt through a rotating disk. A number of screen holes are arrayed on the periphery of the rotating frame.

[0008] The cleaning assembly includes an electric push rod and a squeezing rod. The electric push rod is fixed to the inner wall of the sand screening hopper, and a traction frame is installed at the output end of the electric push rod. The squeezing rod is rotatably installed on the side wall of the traction frame, and the position of the squeezing rod corresponds to the periphery of the rotating frame.

[0009] Preferably, a second motor is installed on the bottom wall of the inclined frame, and a second rotating belt is installed between the output end of the second motor and the conveyor belt drive roller.

[0010] Preferably, the bottom surface of the hopper is provided with a discharge port, and the position of the discharge port corresponds to that of the rotating frame.

[0011] Preferably, a buffer sleeve is installed around the extrusion rod, and the buffer sleeve is made of rubber.

[0012] Preferably, the bottom wall of the rotating frame is fixedly connected to a stone outlet.

[0013] Preferably, a blower is installed on the top of the sand screening hopper, and the blower output end faces the rotating frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention enables rapid sand screening by setting up a support assembly, a sand screening assembly, and a cleaning assembly. Furthermore, the direction of stone discharge is opposite to the direction of sand discharge, which avoids the stones and sand from mixing again, ensuring the quality of sand screening. It can automatically clean stones stuck in the screen holes, reducing the amount of manual cleaning work and improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA section;

[0019] Figure 4 for Figure 3 Enlarged view of part B in the middle section;

[0020] Figure 5 This is a three-dimensional structural diagram of the right side of this utility model.

[0021] In the picture:

[0022] 1. Support assembly; 101. Support frame; 102. Base frame; 103. Inclined frame; 2. Feed hopper; 201. Discharge port; 3. Sand screening hopper; 301. Fan; 4. Assembly plate; 5. First motor; 6. Rotating frame; 601. Screen hole; 7. Drive shaft; 701. Support rod; 8. First rotating belt; 9. Electric push rod; 10. Traction frame; 11. Extrusion rod; 12. Buffer sleeve; 13. Stone outlet; 14. Conveyor belt; 15. Second motor; 1501. Second rotating belt. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] Example 1: As shown in the attached document Figure 1 Appendix Figure 2 and attached Figure 5 As shown: This utility model provides a sand screening machine for civil construction, including a support assembly 1, a sand screening assembly and a cleaning assembly;

[0025] The support assembly 1 includes a support frame 101, a base frame 102, and an inclined frame 103. A feeding hopper 2 is fixedly installed on the top of the support frame 101. The base frame 102 is fixed to one side of the support frame 101, and a sand screening hopper 3 is fixedly installed on the top of the support frame 101. The inclined frame 103 is fixed to the other side of the support frame 101. A conveyor belt 14 is installed between the base frame 102 and the inclined frame 103, and the conveyor belt 14 is located below the sand screening hopper 3. A second motor 15 is installed on the bottom wall of the inclined frame 103. A second rotating belt 1501 is installed between the output end of the second motor 15 and the drive roller of the conveyor belt 14. By setting the base frame 102 and the inclined frame 103, the sand screening hopper 3 is placed at the bottom of the entire device, and the feeding hopper 2 is located above the sand screening hopper 3. By pouring sand into the sand screening hopper 3, it can flow into the sand screening hopper 3 for sand screening operation.

[0026] As attached Figure 1 and attached Figure 3 As shown: The sand screening assembly includes an assembly plate 4, a first motor 5, a rotating frame 6, and a drive shaft 7. The assembly plate 4 is fixed to the bottom wall of the sand screening hopper 3, and several support rods 701 are fixedly connected between the drive shaft 7 and the rotating frame 6. The first motor 5 is installed on the inner wall of the assembly plate 4, and the output end of the first motor 5 passes through the assembly plate 4. The first motor 5 and the drive shaft 7 are connected by a first rotating belt 8 through a rotating disk. Several screen holes 601 are arrayed around the rotating frame 6. The bottom surface of the discharge hopper 2 is provided with a discharge port 201, and the position of the discharge port 201 corresponds to that of the rotating frame 6. A stone outlet 13 is fixedly connected to the bottom wall of the rotating frame 6.

[0027] The first motor 5 controls the first rotating belt 8 to rotate, thereby driving the drive shaft 7 to rotate. The drive shaft 7 drives the rotating frame 6 to rotate inside the sand sieve hopper 3. The sand in the feed hopper 2 enters the rotating frame 6 through the discharge port 201. As the rotating frame 6 rotates, the fine sand falls quickly through the screen holes 601 to the surface of the conveyor belt 14. After being transported by the conveyor belt 14, it is conveyed to the top of the inclined frame 103 and falls freely from the end of the conveyor belt 14. At this time, the stones remain in the rotating frame 6 and are discharged through the stone discharge port 13. The stone discharge port 13 is in the opposite direction to the conveyor belt 14, thereby avoiding the discharge of stones and sand.

[0028] As attached Figure 4As shown: The cleaning assembly includes an electric push rod 9 and a squeezing rod 11. The electric push rod 9 is fixed to the inner wall of the sand hopper 3. A traction frame 10 is installed at the output end of the electric push rod 9. The squeezing rod 11 is rotatably installed on the side wall of the traction frame 10. The position of the squeezing rod 11 corresponds to the periphery of the rotating frame 6. A buffer sleeve 12, made of rubber, is installed on the periphery of the squeezing rod 11. When stones are stuck in the screen holes 601, the electric push rod 9 can drive the traction frame 10 and the squeezing rod 11 to move, so that the squeezing rod 11 is close to the outer wall of the rotating frame 6. When the squeezing rod 11 moves the outer wall of the rotating frame 6, the stones stuck in the thin wall of the rotating frame 6 impact the squeezing rod 11 as the rotating frame 6 rotates, thus automatically falling down, achieving rapid cleaning of the blocked stones. Furthermore, the buffer sleeve 12 can effectively reduce the wear of the squeezing rod 11 on the rotating frame 6.

[0029] As can be seen from the above, the sand to be screened is poured into the hopper 2 located at the top of the support frame 101. The discharge port 201 at the bottom of the hopper 2 corresponds to the rotating frame 6, and the sand enters the rotating frame 6 through the discharge port 201.

[0030] The first motor 5 and the second motor 15 are started. The output of the first motor 5 drives the drive shaft 7 to rotate via the rotating disk and the first rotating belt 8. The drive shaft 7 drives the rotating frame 6 to rotate inside the sand screening bucket 3 via the support rod 701. During the rotation, fine sand falls quickly through the screen holes 601 arrayed around the rotating frame 6 to the surface of the conveyor belt 14 below, while stones are discharged through the stone outlet 13. The output of the second motor 15 drives the drive roller of the conveyor belt 14 via the second rotating belt 1501, causing the conveyor belt 14 to rotate and transport the screened sand to the top of the inclined frame 103, where it falls freely from the end of the conveyor belt 14. The sand and stones are effectively separated through the screen holes 601, and the stone discharge direction is opposite to the sand discharge direction, preventing the stones and sand from mixing again and ensuring the quality of sand screening.

[0031] When a stone becomes stuck in the sieve hole 601, the electric actuator 9 is driven. The output end of the electric actuator 9 drives the traction frame 10 and the squeezing rod 11, which is rotated and mounted on its side wall, to move, bringing the squeezing rod 11 close to the outer wall of the rotating frame 6. As the rotating frame 6 rotates, the stone stuck in the sieve hole 601 impacts the squeezing rod 11 and automatically falls down, achieving rapid clearing of the clogging stone. In addition, the rubber buffer sleeve 12 around the squeezing rod 11 can reduce wear on the rotating frame 6; the cleaning component can automatically clean the stone stuck in the sieve hole 601, reducing the amount of manual cleaning work, improving work efficiency, and the buffer sleeve 12 also extends the service life of the rotating frame 6.

[0032] Example 2: Based on Example 1, a blower 301 is installed on the top of the sand screening hopper 3, and the output end of the blower 301 faces the rotating frame 6.

[0033] As can be seen from the above, by directing the blower 301 toward the rotating frame 6, the dust raised can be effectively blown to the bottom of the device, effectively preventing the sand from being thrown out of the device by the rotating frame 6, and reducing the pollution of the surrounding environment by dust.

[0034] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

[0035] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sand screening machine for civil engineering construction, characterized in that: include: A support assembly (1) includes a support frame (101), a base frame (102), and an inclined frame (103). A feeding hopper (2) is fixedly installed on the top of the support frame (101). The base frame (102) is fixed to one side of the support frame (101), and a sand screening hopper (3) is fixedly installed on the top of the support frame (101). The inclined frame (103) is fixed to the other side of the support frame (101). A conveyor belt (14) is installed between the base frame (102) and the inclined frame (103), and the conveyor belt (14) is located below the sand screening hopper (3). The sand screening assembly includes an assembly plate (4), a first motor (5), a rotating frame (6), and a drive shaft (7). The assembly plate (4) is fixed to the bottom wall of the sand screening hopper (3), and a number of support rods (701) are fixedly connected between the drive shaft (7) and the rotating frame (6). A first rotating belt (8) is connected between the first motor (5) and the drive shaft (7) through a rotating disk. A number of screen holes (601) are arrayed on the periphery of the rotating frame (6). The cleaning assembly includes an electric push rod (9) and a squeezing rod (11). The electric push rod (9) is fixed to the inner wall of the sand sieve hopper (3). A traction frame (10) is installed at the output end of the electric push rod (9). The squeezing rod (11) is rotatably installed on the side wall of the traction frame (10). The position of the squeezing rod (11) corresponds to the periphery of the rotating frame (6).

2. The sand screening machine for civil engineering construction as described in claim 1, characterized in that: A second motor (15) is installed on the bottom wall of the inclined frame (103), and a second rotating belt (1501) is installed between the output end of the second motor (15) and the drive roller of the conveyor belt (14).

3. The sand screening machine for civil engineering construction as described in claim 2, characterized in that: The bottom surface of the hopper (2) is provided with a discharge port (201), and the position of the discharge port (201) corresponds to that of the rotating frame (6).

4. The sand screening machine for civil engineering construction as described in claim 3, characterized in that: A buffer sleeve (12) is installed around the extrusion rod (11), and the buffer sleeve (12) is made of rubber.

5. A sand screening machine for civil engineering construction as described in claim 1, characterized in that: The bottom wall of the rotating frame (6) is fixedly connected to a stone outlet (13).

6. A sand screening machine for civil engineering construction as described in claim 1 or 4, characterized in that: A blower (301) is installed on the top of the sand screening bucket (3), and the output end of the blower (301) faces the rotating frame (6).

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