Sand screening machine for house building construction
By designing a sand screening machine with a multi-level screening structure, and using a rotating and vibrating motor to perform two screenings, the problems of low screening efficiency and poor effect in the existing technology are solved, and effective grading and screening of sand is realized, and the Quality of concrete and mortar during construction.
Patent Information
- Application Number
- CN202411244581.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2024-12-27
AI Technical Summary
In the prior art, the screening device has low screening efficiency and poor screening effect, and it is impossible to achieve effective graded screening of sand.
A sand screening machine for building construction was designed, adopting a multi-level screening structure, including the first sand screening structure and the second sand screening structure. The screening groove body and filter screen are driven by rotating motors and vibrating motors to achieve screening. The sand and gravel are screened twice, and the separation of different particle sizes is achieved through the lifting assembly and pushing plate.
It improves the screening efficiency and effect, can effectively select sand of different particle sizes in grades, simplifies the screening process, and improves the quality of concrete and mortar during construction.
Smart Images
Figure CN119186845A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sand screening machines, in particular to a sand screening machine for building construction. Background Art
[0002] In the field of building construction, sand plays an important role as a basic raw material. Moreover, sand, as a fine aggregate, can be made into concrete and mortar respectively by mixing with coarse aggregate and cementitious materials. Currently, most of the sand used in the market comes from river sand. Due to the limitations of the sand extraction process, the sand contains some small stones and mud. There are many impurities in the sand and the particle size of the sand itself is also different. Direct use will reduce the quality of concrete and mortar. Therefore, the process of screening sand during construction is particularly important.
[0003] In the prior art, most housing construction sites use some inclined screens to screen sand manually, and use screening devices to screen sand. When screening, the sand is placed on the screen and screened by gravity. The screening is only done once, and most of the sand screened is small stones. There is no further classification and screening of the sand, and the screening efficiency and effect are poor. For this reason, we propose a sand screening machine for housing construction. Summary of the invention
[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a sand screening machine for building construction to solve the problems of low sand screening efficiency and poor screening effect of the screening device in the prior art.
[0005] The present invention provides a sand screening machine for building construction, which includes: a main body, at least two lifting assemblies are fixedly arranged on the side walls of the main body in the vertical direction, the lifting ends of the lifting assemblies are fixedly connected with an upper cover plate, the upper cover plate is located on the upper part of the main body and can cover the top opening of the main body; a first sand screening structure and a second sand screening structure are arranged inside the main body, the first sand screening structure is located above the second sand screening structure, and sand and gravel can be screened twice; the first sand screening structure has an upper discharge port at the lower end, a lower discharge port for discharging is arranged at the bottom of the main body, and the side walls of the main body have a slag discharge port, and the slag discharge port corresponds to the second sand screening structure.
[0006] Furthermore, the first sand screening structure includes a rotating motor fixed to the lower part of the upper cover plate, the end of the rotating motor's shaft is fixedly connected to the connecting plate, the lower end of the connecting plate is equipped with a sand screening trough body, driving the sand screening trough body to rotate, and the side wall of the sand screening trough body is a filter mesh structure; a feed pipe, the lower end of which passes through the annular groove on the upper cover plate and the connecting plate in turn, and extends into the interior of the sand screening trough body, and is fixed on the connecting plate; the axis of the annular groove coincides with the axis of the sand screening trough body; the bottom of the sand screening trough body is provided with the upper discharge port, and the upper discharge port is fixedly provided with an upper discharge pipe.
[0007] Furthermore, a trumpet feed port is fixedly provided at the upper end of the feed pipe; the bottom of the inner cavity of the sand screening trough is a funnel-shaped structure, the upper discharge port is located at the axial position of the funnel-shaped structure, and the upper discharge pipe is provided with a first valve for controlling the opening and closing of the pipeline.
[0008] In an embodiment of the present invention, the second sand screening structure includes a filter screen laterally arranged in the inner cavity of the main body, and a vibration motor is fixedly arranged at the bottom of the filter screen; a U-shaped limiting groove is fixedly arranged on one side of the inner wall of the position corresponding to the filter screen in the inner cavity of the main body, and an elastic component is arranged on the other side, wherein the side edge of the filter screen can be inserted into the U-shaped limiting groove to limit the lateral movement range of the filter screen; the elastic component is arranged on the lower side of the filter screen to limit the upper and lower vibration amplitude of the filter screen; the bottom height of the slag discharge port corresponds to the upper surface height of the filter screen.
[0009] Furthermore, an electric cylinder is fixedly provided on the outer side wall of the main body, the telescopic end of the electric cylinder passes through the side wall of the main body, and the telescopic end is fixedly connected with a push plate, the lower edge of the push plate is located on the upper surface of the filter screen, and is used to push the sand and gravel on the upper surface of the filter screen.
[0010] Furthermore, the elastic component includes a fixing plate fixed on the inner cavity wall of the main body and a spring with one end fixed on the fixing plate, and the other end of the spring is fixedly connected to the bottom of the filter screen.
[0011] Furthermore, the slag discharge port is hinged with a sealing plate for sealing the opening.
[0012] In an embodiment of the present invention, the bottom of the main body inner cavity is a funnel-shaped structure, the lower discharge port is located at the axial position of the funnel-shaped structure, and the lower discharge port is connected to a lower discharge pipe, and a second valve for controlling the opening and closing of the pipeline is provided on the lower discharge pipe.
[0013] In an embodiment of the present invention, a support plate for supporting the upper structure is fixedly provided on the bottom of the main body.
[0014] Furthermore, a plurality of movable wheel groups are arranged at the bottom of the support plate, and the movable wheel groups are universal wheels for driving the main body to move; the universal wheels have a locking structure for limiting the rotation of the universal wheels.
[0015] According to the above embodiments, the sand screening machine for building construction provided by the present application has at least the following benefits: the sand screening machine provided by the present invention has a simple structure, and through multi-level coordination, it can realize two-time screening of sand and gravel, and can not only screen sand and gravel, but also obtain sand and gravel of different particle sizes, the screening process is simple and fast, and the screening effect is obvious. In addition, after screening, the screened sand and gravel can be quickly disposed of.
[0016] It should be understood that the above general description and the following detailed description are merely exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The following drawings are part of the specification of the present invention, and illustrate exemplary embodiments of the present invention. Together with the description of the specification, the accompanying drawings are used to explain the principles of the present invention.
[0018] Figure 1 The present invention provides a schematic diagram of the overall structure of a sand screening machine for building construction.
[0019] Figure 2 The present invention provides a cross-sectional view of a sand screening machine for building construction.
[0020] Figure 3 for Figure 2 A magnified view of the structure at center.
[0021] Figure 4 for Figure 2 A magnified view of the structure at point B.
[0022] Figure 5 A partial cross-sectional view of a side view of a sand screening machine for building construction provided by the present invention.
[0023] Description of reference numerals:
[0024] 1-main body, 2-lifting assembly, 3-upper cover plate, 4-first sand screening assembly, 5-second sand screening assembly, 6-slag discharge port, 7-support plate;
[0025] 11-lower discharge pipe, 12-second valve;
[0026] 21- load-bearing plate, 22- hydraulic cylinder;
[0027] 31- annular groove;
[0028] 41-rotating motor, 42-connecting plate, 43-sand screening tank body, 44-feeding pipe, 45-upper discharge pipe, 46-trumpet feeding port, 47-first valve;
[0029] 51-filter screen, 52-vibration motor, 53-U-shaped limit groove, 54-elastic component, 55-electric cylinder, 56-push plate, 57-sealing plate;
[0030] 541-fixed plate, 542-spring. DETAILED DESCRIPTION
[0031] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.
[0032] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to those skilled in the art. The present application description and examples are exemplary only.
[0033] The present invention provides a sand screening machine for building construction, such as Figure 1-5 The figure shows the overall structure of the sand screening machine. In a specific implementation, the sand screening machine comprises: a main body 1, at least two lifting assemblies 2 are fixedly arranged on the side wall of the main body 1 in the vertical direction, and the lifting end of the lifting assembly 2 is fixedly connected with an upper cover plate 3, and the upper cover plate 3 is located on the upper part of the main body 1 and can cover the top opening of the main body 1. In this embodiment, the lifting assembly 2 comprises a bearing plate 21 and a hydraulic cylinder 22 fixed on the bearing plate 21, and the telescopic end of the hydraulic cylinder is upwardly connected to the bottom surface of the upper cover plate 3.
[0034] The main body 1 is provided with a first sand screening structure 4 and a second sand screening structure 5. The first sand screening structure 4 is located above the second sand screening structure 5, and can screen the sand twice. Specifically, the sand is first screened by the first sand screening structure 4, and then screened again by the second sand screening structure 5, and finally sand of different particle sizes can be obtained, thereby improving the screening efficiency and screening effect.
[0035] The first sand screening structure 4 has an upper discharge port at the lower end for discharging large sand and gravel after the first screening. The main body 1 is provided with a lower discharge port at the bottom for discharging the sand and gravel with the smallest diameter after two screenings. The side wall of the main body 1 has a slag discharge port 6, which corresponds to the second sand screening structure 5 and is used to discharge sand and gravel with larger diameter after the second screening. The sand and gravel with smaller diameter after the first sand screening structure 4 will fall on the second sand screening structure 5 and wait for the second screening.
[0036] The specific implementation mode of the present invention is as follows Figure 2 and Figure 3 As shown, the first sand screening structure 4 includes a rotating motor 41 fixed to the lower part of the upper cover plate 3, the rotating shaft of the rotating motor 41 extends downward, and the end of the rotating shaft is fixedly connected to a connecting plate 42, and a sand screening trough body 43 is installed at the lower end of the connecting plate 42. The rotating motor 41 drives the sand screening trough body 43 to rotate through the connecting plate 42. In this embodiment, the sand screening trough body 43 can be disassembled to facilitate subsequent replacement and maintenance.
[0037] In addition, the side wall of the sand screening trough 43 is a filter mesh structure, and the rotating motor 41 drives the sand screening trough 43 to rotate. The sand and gravel inside the cavity of the sand screening trough 43 will move toward the side wall under the action of centrifugal force, and the sand and gravel with a smaller diameter will pass through the filter mesh structure under the action of centrifugal force and fall downward to the second sand screening structure to wait for the second screening. The sand and gravel with a larger diameter will be left inside the sand screening trough 43 and can be discharged through the upper discharge port.
[0038] In this embodiment, the sand screening trough body 43 is woven from a filter mesh with a specification of 50 mesh. Under the action of centrifugal motion, sand can pass through the sand screening trough body 43 and move toward the inner wall of the sand screening machine body 1, while small stones will be left inside the sand screening trough body 43.
[0039] The first sand screening structure 4 further includes a feed pipe 44, the lower end of which passes through the annular groove 31 on the upper cover plate 3 and the lower connecting plate 42 in sequence, and extends into the interior of the sand screening tank body 43, and the feed pipe 44 is fixed on the connecting plate 42. In this embodiment, sand and gravel are added to the end of the feed pipe 44 located outside, and then the sand and gravel enter the interior of the sand screening tank body 43 through the feed pipe 44. In addition, a trumpet feed port 46 is fixedly provided at the upper end of the feed pipe 44 to facilitate the addition of sand and gravel.
[0040] The axis of the annular groove 31 coincides with the axis of the sand screening trough body 43. In this embodiment, the inner width of the annular groove 31 is slightly larger than the outer diameter of the feed pipe 43. When the rotating motor 41 drives the sand screening trough body 43 to rotate, the feed pipe 43 also rotates in a circle along the annular groove.
[0041] The bottom of the sand screening trough body 43 is provided with an upper discharge port, and an upper discharge pipe 45 is fixedly arranged on the upper discharge port. After the first screening, the sand and gravel with a larger diameter are discharged through the upper discharge pipe 45.
[0042] Furthermore, the bottom of the inner cavity of the sand screening trough body 43 is a funnel-shaped structure, the upper discharge port is located at the axial position of the funnel-shaped structure, and a first valve 47 for controlling the opening and closing of the pipeline is provided on the upper discharge pipe 45. The inner cavity of the funnel-shaped structure is conducive to the sand and gravel gathering and then screening the axial position of the bottom of the sand screening trough body 43, so that the sand and gravel can be discharged through the upper discharge pipe 45.
[0043] After the motor rotates to screen the sand and gravel for the first time, the sand and gravel with larger diameter need to be discharged through the upper discharge pipe 45. First, the hydraulic cylinder 22 is started, and the lifting end of the hydraulic cylinder 22 lifts the upper cover plate 3, thereby driving the first sand screening component 4 to move upward together until the first sand screening component 4 is located outside the inner cavity of the main body 1. After moving to the set position, the operator connects a conveyor belt to the bottom outlet of the upper discharge pipe 45, and then opens the first valve 47, so that the sand and gravel with larger diameter after the first screening can be discharged from the sand screening tank 43.
[0044] In a specific embodiment of the present invention, the second sand screening structure 5 includes a filter screen 51 disposed transversely in the inner cavity of the main body 1, and a vibration motor 52 is fixedly disposed at the bottom of the filter screen 51. The vibration motor 52 drives the filter screen 51 to vibrate, and the vibration causes the sand and gravel on the upper part of the filter screen 51 to vibrate, and the sand and gravel with smaller particles will pass through the filter screen 51, fall to the lower part of the filter screen 51, and can be discharged through the lower discharge port.
[0045] At the position of the filter screen 51 in the inner cavity of the main body 1, a U-shaped limiting groove 53 is fixedly provided on one side of the inner wall, and an elastic component 54 is provided on the other side. The positions of the U-shaped limiting groove 53 and the elastic component 54 correspond to each other. Figure 4 As shown, the side edge of the filter screen 51 can be inserted into the U-shaped limiting groove 53 to limit the lateral movement range of the filter screen 51 when the vibration motor 52 vibrates the filter screen 51.
[0046] The elastic component 54 is arranged on the lower side of the filter 51 to limit the up and down vibration amplitude of the filter 51. While assisting the filter 51 to vibrate up and down, it can also play a certain buffering effect to avoid damage to the filter 51 caused by the rigid connection.
[0047] In addition, the bottom height of the slag discharge port 6 corresponds to the upper surface height of the filter screen 51 , which facilitates the discharge of sand and gravel on the surface of the filter screen 51 .
[0048] Furthermore, if Figure 5 As shown, an electric cylinder 55 is fixedly arranged on the outer wall of the main body 1, and the telescopic end of the electric cylinder 55 passes through the side wall of the main body 1, and is fixedly connected to a push plate 56, the lower edge of which is located on the upper surface of the filter screen 51, and is used to push the sand and gravel on the upper surface of the filter screen 51. In this embodiment, the telescopic end of the electric cylinder is connected to the push plate through a push rod, and the telescopic direction of the electric cylinder 55 corresponds to the slag discharge port 6, so that the sand and gravel remaining on the upper surface of the filter screen 51 after secondary screening can be pushed out from the slag discharge port 6.
[0049] Furthermore, the slag discharge port 6 is hinged with a sealing plate 57 for sealing the opening. During the sand and gravel screening process, the sealing plate 57 is closed to prevent sand and gravel from falling.
[0050] Furthermore, the elastic component 54 includes a fixing plate 541 fixed to the inner wall of the main body 1 and a spring 542 with one end fixed to the fixing plate 541, and the other end of the spring 542 is fixedly connected to the bottom of the filter 51, thereby realizing an elastic connection with the filter 51. In this embodiment, in order to ensure the vibration stability of the filter 51, at least two springs 542 are provided on the fixing plate 541.
[0051] In a specific embodiment of the present invention, the bottom of the inner cavity of the main body 1 is a funnel-shaped structure, the lower discharge port is located at the axial position of the funnel-shaped structure, and the lower discharge port is connected to a lower discharge pipe 11, and a second valve 12 for controlling the opening and closing of the pipe is provided on the lower discharge pipe 11. When the sand and gravel after the secondary screening falls on the lower part of the filter screen 51, the sand and gravel will be gathered to the middle under the action of the funnel-shaped bottom structure and concentrated at the lower discharge port, which is convenient for the discharge of the sand and gravel.
[0052] In a specific embodiment of the present invention, a support plate 7 for supporting the upper structure is fixedly provided at the bottom of the main body 1 .
[0053] Furthermore, a plurality of movable wheel groups are provided at the bottom of the support plate 7, and the movable wheel groups are universal wheels for driving the main body 1 to move, so as to facilitate the transportation and handling of the equipment.
[0054] The universal wheel has a locking structure for limiting the rotation of the universal wheel to prevent the universal wheel from rotating and displacing due to vibration of the sand screening machine during the sand screening process.
[0055] The implementation principle of a sand screening machine for building construction provided in this application is as follows:
[0056] When using the device, first connect the external power supply, then pour the sand mixed with small stones into the trumpet feed port 46, and the sand mixed with small stones falls into the inner cavity of the sand screening trough body 43 along the feed pipe 44. Then start the rotating motor 41, so that the rotating shaft drives the connecting plate 42 and the sand screening trough body 43 to rotate, and the sand and small stones inside the sand screening trough body 43 will perform centrifugal motion under the action of rotation. Under the action of centrifugal motion, the sand can pass through the side wall of the filter screen structure of the sand screening trough body 43 and move to the inner wall of the main body 1, while the small stones will be left inside the cavity of the sand screening trough body 43. When it is necessary to remove the small stones inside the cavity of the sand screening trough body 43, the hydraulic cylinder 22 can be started to drive the upper cover plate 3 to move upward so as to lift the sand screening trough body 43 out of the main body 1. Furthermore, the staff uses the inclined plate to lean against the lower part of the upper discharge pipe 45, and then opens the first valve 47, so that the small stones are discharged from the upper discharge pipe at the bottom of the cavity of the sand screening trough body 43, and then automatically slide down along the inclined plate. Through the cooperation of the above structure, the sand mixed with small stones can be screened for the first time, thereby improving the screening efficiency and screening effect.
[0057] Furthermore, the sand thrown out of the sand screening trough body 43 will fall to the upper surface of the filter 51 due to gravity. At this time, the vibration motor 52 can be started to vibrate the filter 51 and the sand on its upper surface, and the spring 542 can limit the vibration amplitude of the filter 51, and the U-shaped limit groove 53 can limit the vibration range of the right end of the filter 51. The sand will be further screened into different particle sizes under the vibration of the filter 51. The sand with smaller particles will fall to the inner bottom surface of the main body 1 of the sand screening machine, while the sand with larger particles will be left on the upper surface of the filter 51. When it is necessary to take out the large particles of sand, the sealing plate 57 can be opened, and then the electric cylinder 55 can be started to make the push rod drive the push plate 56 to move toward the slag discharge port 6, and the large particles of sand on the upper surface of the filter 51 can be automatically pushed out. When it is necessary to take out small particles of sand, the second valve 12 on the lower discharge pipe 11 can be opened, so that the small particles of sand can move to the discharge pipe 11 at the bottom of the funnel-shaped bottom of the inner cavity of the main body 1, thereby realizing the automatic falling out of the small particles of sand. Thus, after two screenings, small stones, large particles of sand and small particles of sand can be taken out separately, and sand of different particle sizes can be used in different positions of building construction. Through the cooperation of the above structure, sand of different particle sizes can be further graded and screened. The whole screening process is simple to operate and easy to use, which improves the screening efficiency and screening effect.
[0058] The above description is only an illustrative specific implementation manner of the present invention. Without departing from the concept and principle of the present invention, any equivalent changes and modifications made by those skilled in the art should fall within the scope of protection of the present invention.
Claims
1. A sand screening machine for building construction, characterized in that: The sand screening machine comprises: a main body (1), at least two lifting assemblies (2) are fixedly arranged on the side wall of the main body (1) in the vertical direction, the lifting ends of the lifting assemblies (2) are fixedly connected with an upper cover plate (3), and the upper cover plate (3) is located on the upper part of the main body (1) and can cover the top opening of the main body (1); A first sand screening structure (4) and a second sand screening structure (5) are arranged inside the main body (1); the first sand screening structure (4) is located above the second sand screening structure (5) and is capable of screening sand and gravel twice; The first sand screening structure (4) has an upper discharge port at the lower end, the bottom of the main body (1) is provided with a lower discharge port for discharging materials, and the side wall of the main body (1) has a slag discharge port (6), and the slag discharge port (6) corresponds to the second sand screening structure (5).
2. The sand screening machine for building construction according to claim 1, characterized in that: The first sand screening structure (4) comprises a rotating motor (41) fixed to the lower part of the upper cover plate (3), the end of the rotating shaft of the rotating motor (41) is fixedly connected to the connecting plate (42), the lower end of the connecting plate (42) is equipped with a sand screening trough body (43) to drive the sand screening trough body (43) to rotate, and the side wall of the sand screening trough body (43) is a filter screen structure; A feed pipe (44), the lower end of which passes through the annular groove (31) on the upper cover plate (3) and the connecting plate (42) in sequence, extends into the interior of the sand screening trough body (43), and is fixed on the connecting plate (42); The axis of the annular groove (31) coincides with the axis of the sand screening trough body (43); The bottom of the sand screening trough body (43) is provided with the upper discharge port, and an upper discharge pipe (45) is fixedly arranged on the upper discharge port.
3. The sand screening machine for building construction according to claim 2, characterized in that: A trumpet feed port (46) is fixedly provided at the upper end of the feed pipe (44); The bottom of the inner cavity of the sand screening trough body (43) is a funnel-shaped structure, the upper discharge port is located at the axial position of the funnel-shaped structure, and the upper discharge pipe (45) is provided with a first valve (47) for controlling the opening and closing of the pipe.
4. The sand screening machine for building construction according to claim 1, characterized in that: The second sand screening structure (5) comprises a filter screen (51) arranged transversely in the inner cavity of the main body (1), and a vibration motor (52) is fixedly arranged at the bottom of the filter screen (51); A U-shaped limiting groove (53) is fixedly provided on one side of the inner wall of the inner cavity of the main body (1) at a position corresponding to the filter screen (51), and an elastic component (54) is provided on the other side, wherein: The side edge of the filter screen (51) can be inserted into the U-shaped limiting groove (53) to limit the lateral movement range of the filter screen (51); The elastic component (54) is arranged on the lower side of the filter screen (51) and is used to limit the up and down vibration amplitude of the filter screen (51); The bottom height of the slag discharge port (6) corresponds to the upper surface height of the filter screen (51).
5. The sand screening machine for building construction according to claim 4, characterized in that: An electric cylinder (55) is fixedly arranged on the outer wall of the main body (1), the telescopic end of the electric cylinder (55) passes through the side wall of the main body (1), and the telescopic end is fixedly connected to a push plate (56), the lower edge of the push plate (56) is located on the upper surface of the filter screen (51), and is used to push the sand and gravel on the upper surface of the filter screen (51).
6. The sand screening machine for building construction according to claim 4, characterized in that: The elastic component (54) comprises a fixing plate (541) fixed to the inner wall of the main body (1) and a spring (542) with one end fixed to the fixing plate (541), and the other end of the spring (542) is fixedly connected to the bottom of the filter screen (51).
7. The sand screening machine for building construction according to claim 4, characterized in that: The slag discharge port (6) is hinged with a sealing plate (57) for sealing the opening.
8. The sand screening machine for building construction according to claim 1, characterized in that: The bottom of the inner cavity of the main body (1) is a funnel-shaped structure, the lower discharge port is located at the axial position of the funnel-shaped structure, and the lower discharge port is connected to a lower discharge pipe (11), and a second valve (12) for controlling the opening and closing of the pipeline is arranged on the lower discharge pipe (11).
9. The sand screening machine for building construction according to claim 1, characterized in that: A support plate (7) for supporting the upper structure is fixedly arranged at the bottom of the main body (1).
10. The sand screening machine for building construction according to claim 9, characterized in that: A plurality of movable wheel groups are arranged at the bottom of the support plate (7), and the movable wheel groups are universal wheels used to drive the main body (1) to move; The universal wheel has a locking structure for limiting the rotation of the universal wheel.