Multi-stage sand screening device for building construction

Abstract

The invention relates to the technical field of sand screening equipment, in particular to a multistage sand screening device for building construction, which comprises a shell, the shell is connected with a first support frame, a plurality of groups of support legs are arranged at the bottom of the shell, a driving rod is arranged on one side of a motor, and a long groove is formed in the driving rod. An opening and closing component is arranged in the shell and comprises an air cylinder, the sand screening plate with a certain angle is arranged to be matched with the rotating function of the opening and closing component, screening can be better achieved, blocking can be effectively prevented, discharging is easier, and due to the arrangement of a rotating mechanism, when rotating driving is stopped, the opening and closing component can be separated from the sand screening plate. The screening plates can rotate in the specified direction, so that large-particle impurities blocked in holes of the screening plates are removed, finally, due to the arrangement of the multi-stage screening device, a certain stage of screening plate can be selectively opened and closed, and an opening and closing component is started to discharge the impurities after sufficient screening.

Description

Technical Field

[0001] The invention relates to the technical field of sand screening equipment, and in particular to a multi-stage sand screening device for construction. Background Art

[0002] As an indispensable basic building material in construction projects, sand and gravel generally have problems such as uneven particles and mixed impurities. They need to be screened before they can be put into use. In view of the huge demand for sand and gravel on construction sites, sand screening equipment has become an important operating device on modern construction sites. However, the current sand screening equipment still has significant technical defects in practical applications. Taking the "automatic sand screening machine" of Chinese patent CN201820020684.5 as an example, although this technical solution realizes the vibration of the screen through the cooperation of the screw fixing mechanism and the drive assembly, it has been verified in practical applications that there are the following technical bottlenecks: First, most existing equipment uses a single-stage screening structure, which makes it difficult to accurately classify sand and gravel with large differences in particle size, resulting in limited screening efficiency and product quality. Secondly, sand and gravel that have not been pre-treated are prone to agglomeration due to factors such as humidity. Direct screening operations will significantly reduce the effective pass rate of the screen and even cause equipment failures such as sieve hole blockage. Furthermore, the traditional vibration screening method has poor separation effect on fine particles, which can easily cause sand waste or grading imbalance.

[0003] In addition, the existing sand screening equipment often starts to discharge before the screening is complete, resulting in a lot of debris being mixed with the filtered sand and discharged, resulting in incomplete screening, and the filter screen is prone to clogging, which seriously reduces work efficiency.

[0004] These problems not only affect the quality of construction materials, but also directly lead to reduced construction efficiency and increased equipment maintenance costs. Therefore, it is necessary to develop a new type of sand screening device with multi-stage screening and dynamic adjustment functions to improve the overall efficiency of the sand and gravel screening process. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above problems existing in the existing multi-stage sand screening device for construction, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a multi-stage sand screening device for construction, the purpose of which is to improve work efficiency.

[0008] To solve the above technical problems, the present invention provides the following technical solutions: a screening mechanism, comprising a housing, the housing being connected to a first support frame, a plurality of groups of support legs being arranged at the bottom of the housing; and, The rotating mechanism comprises a motor, a driving rod is arranged on one side of the motor, and a long slot is opened inside the driving rod.

[0009] As a preferred solution of the multi-stage sand screening device for construction of the present invention, an opening and closing component is arranged inside the outer shell, and the opening and closing component includes a cylinder, a moving column is arranged on one side of the cylinder, and an opening and closing plate is fixedly connected to one side of the moving column.

[0010] As a preferred solution of the multi-stage sand screening device for construction described in the present invention, a sand screening plate is slidably arranged inside the outer shell, the sand screening plate includes a limiting ring arranged around the top, a discharge port is arranged at the bottom of the sand screening plate, and a second support frame is fixedly arranged at the bottom of the sand screening plate.

[0011] As a preferred solution of the multi-stage sand screening device for construction of the present invention, a limit block is arranged inside the long groove, a round hole and a square hole are respectively opened on both sides of the limit block, and the round hole and the square hole are connected to each other.

[0012] As a preferred solution of the multi-stage sand screening device for construction according to the present invention, a return spring is arranged inside the long groove, a moving block is arranged on one side of the return spring, a moving rod is fixedly arranged on one side of the moving block, and a square block is arranged at one end of the moving rod.

[0013] As a preferred embodiment of the multi-stage sand screening device for construction according to the present invention, a rotating column is arranged on the outer side of the driving rod, a sliding block is arranged on one side of the inner side of the rotating column, a first arc-shaped groove is opened inside the rotating column, a first spring is arranged inside the first arc-shaped groove, and a driving block is arranged on the outer side of the rotating column.

[0014] As a preferred solution of the multi-stage sand screening device for construction described in the present invention, the driving block is connected to a limiting member, the limiting member includes a second spring, a second arc groove is opened inside the limiting member, and a plurality of limiting protrusions are arranged on the outside of the limiting member.

[0015] As a preferred solution of the multi-stage sand screening device for construction of the present invention, a resistance member is arranged on the outside of the limiting member, a resistance block is arranged inside the resistance member, a cylindrical rod is arranged on one side of the resistance block, and a third spring is arranged on the outside of the cylindrical rod.

[0016] As a preferred solution of the multi-stage sand screening device for construction of the present invention, the diameter of the round hole is adapted to the diameter of the moving rod, and the square hole is adapted to the square block.

[0017] As a preferred solution of the multi-stage sand screening device for construction of the present invention, the first spring and the second spring are both arc springs.

[0018] The beneficial effects of the present invention are as follows: by setting a sand screening plate with a certain angle and cooperating with its rotating function, not only can better screening be achieved, but also blockage can be effectively prevented, and material unloading is also easier. Moreover, due to the rotating mechanism set up, the screening plate can be rotated in a specified direction while the rotating drive is stopped, so that large particles of impurities blocking the holes of the screening plate can be removed. Finally, due to the multi-stage screening device set up, a certain level of the screening plate can be opened and closed according to the selection, and the opening and closing components can be started to discharge impurities after sufficient screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 The present invention provides an overall structural diagram.

[0020] Figure 2 This is a schematic diagram of the interior of the screening mechanism provided by the present invention.

[0021] Figure 3 Another perspective schematic diagram provided by the present invention.

[0022] Figure 4 This is an internal side view of the screening mechanism provided by the present invention.

[0023] Figure 5 This is a partial cross-sectional schematic diagram of the rotating mechanism provided by the present invention.

[0024] Figure 6 This is a schematic diagram of a partial cross-section of the rotating mechanism provided by the present invention from another viewing angle.

[0025] Figure 7 This is a partially enlarged schematic diagram of a partial cross-section of the rotating mechanism provided by the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0030] Reference Figures 1 to 4 , which is the first embodiment of the present invention, provides a screening mechanism 100.

[0031] The screening mechanism 100 includes a shell 101, which is connected to a first support frame 102, and a plurality of support legs 103 are arranged at the bottom of the shell 101; an opening and closing component 104 is arranged inside the shell 101, and the opening and closing component 104 includes a cylinder 104a, a moving column 104b is arranged on one side of the cylinder 104a, and an opening and closing plate 104c is fixedly connected to one side of the moving column 104b; a sand screening plate 105 is slidably arranged inside the shell 101, and the sand screening plate 105 includes a limiting ring 105a arranged around the top thereof, a discharge port 105b is arranged at the bottom of the sand screening plate 105, and a second support frame 105c is fixedly arranged at the bottom of the sand screening plate 105.

[0032] The staff puts the sand and stone mixture into the top of the outer shell 101. The sand and stone will be screened by the sand screening plate 105 set on the top. The fine particles will pass through the sand screening plate 105 and fall onto the surface of the next screening plate 105, while the larger particles will roll onto the opening and closing plate 104c. If it is necessary to discharge the larger particles, the cylinder 104a is started, and the opening and closing plate 104c is retracted by the moving column 104b, and the larger particles will fall into the corresponding pipe. Example 2

[0033] Reference Figures 1 to 7 , which is a second embodiment of the present invention, provides a rotating mechanism 200.

[0034] The rotating mechanism 200 includes a motor 201, a driving rod 202 is arranged on one side of the motor 201, a long slot 202a is provided inside the driving rod 202, a limit block 202b is provided inside the long slot 202a, a round hole 202b-1 and a square hole 202b-2 are respectively provided on both sides of the limit block 202b, the round hole 202b-1 and the square hole 202b-2 are communicated with each other, a return spring 202b-3 is provided inside the long slot 202a, a moving block 202c is provided on one side of the return spring 202b-3, a moving rod 202d is fixedly provided on one side of the moving block 202c, a square block 202d-1 is provided at one end of the moving rod 202d, a rotating column 203 is arranged on the outer side of the driving rod 202, a sliding block 203a is provided on one side of the rotating column 203, and a first arc slot 203 is provided inside the rotating column 203 c. A first spring 203b is arranged inside the first arc groove 203c, a driving block 203d is arranged on the outer side of the rotating column 203, and the driving block 203d is connected to the limiting member 204. The limiting member 204 includes a second spring 204a. A second arc groove 204b is opened inside the limiting member 204, and a plurality of limiting protrusions 204c are arranged on the outer side of the limiting member 204. A resistance member 205 is arranged on the outer side of the limiting member 204, and a resistance block 205a is arranged inside the resistance member 205. A cylindrical rod 205b is arranged on one side of the resistance block 205a, and a third spring 205c is arranged on the outer side of the cylindrical rod 205b. The diameter of the round hole 202b-1 is adapted to the diameter of the moving rod 202d, and the square hole 202b-1 is adapted to the square block 202d-1. The first spring 203b and the second spring 204a are both arc springs.

[0035] Specifically, starting the motor 201 will drive the driving rod 202 to rotate. Due to the action of centrifugal force, the moving block 202c will drive the moving rod 202d to move and stretch the reset spring 202b-3, so that the moving block 202c begins to contact the sliding block 203a and squeezes the first spring 203b to move a distance in the first arc groove 203c, thereby driving the rotating column 203 to move. Since the rotating column 203 is connected to the sand screening plate 105 through the rotating column 203, the sand screening plate 105 rotates, and the sand screening plate 105 starts to rotate. Since it rotates and screens at the same time, and the angle of the screening plate 105 is designed, the force of the rotation pushes the sand screening plate 105 upward, so that the screening area is more sufficient. After sufficient screening, the driving of the motor 201 is stopped, the moving block 202c is reset, and the rotating column 203 loses the driving force. At this time, the limiting protrusion 204c Driven by the second spring 204a, and the elastic force of the second spring 204a is greater than that of the first spring 203b, and the limiting protrusion 204c is affected by the resistance block 205a, the rotating column 203 briefly rotates counterclockwise, thereby generating a reverse impact force, which helps to eject particles stuck in the sieve holes and reduce the risk of clogging. One-way rotation may cause particles to accumulate on one side of the screen due to inertia, while a brief counterclockwise rotation can break the directional arrangement of particles through path disturbance, promote material dispersion, and improve screening accuracy. Example 3

[0036] Reference Figures 1 to 7 , which is the third embodiment of the present invention, provides a multi-stage sand screening device for construction.

[0037] The staff puts the sand and stone mixture into the top of the shell 101, and the sand and stone will be screened by the sand screening plate 105 set on the top. The fine particles will pass through the sand screening plate 105 and fall onto the surface of the next screening plate 105, while the larger particles will roll onto the opening and closing plate 104c. The motor 201 is started, which will drive the driving rod 202 to rotate. Due to the action of centrifugal force, the moving block 202c will drive the moving rod 202d to move and stretch the reset spring 202b-3, so that the moving block 202c begins to contact the sliding block 203a and squeezes the first spring 203b in the first arc groove 203c. The rotating column 203 moves a certain distance, thereby driving the rotating column 203 to move. Since the rotating column 203 is connected to the sand screening plate 105 through the rotating column 203, the sand screening plate 105 rotates, and the sand screening plate 105 starts to rotate. Since the sand is screened while rotating, and the angle of the screening plate 105 is designed, the force of the rotation pushes the sand screening plate 105 upward, so that the screening area is more sufficient. After sufficient screening, the driving of the motor 201 is stopped, the moving block 202c is reset, and the rotating column 203 loses the driving force. At this time, the limiting protrusion 204c Driven by the second spring 204a, and the elastic force of the second spring 204a is greater than that of the first spring 203b, and the limiting protrusion 204c is affected by the resistance block 205a, the rotating column 203 briefly rotates counterclockwise, thereby generating a reverse impact force, which helps to eject particles stuck in the sieve holes and reduce the risk of blockage. One-way rotation may cause particles to accumulate on one side of the sieve due to inertia, while a brief counterclockwise rotation can break the directional arrangement of particles through path disturbance, promote material dispersion, and improve screening accuracy. If larger particles need to be discharged, the cylinder 104a is started, and the opening and closing plate 104c is retracted by the moving column 104b, and the larger particles will fall into the corresponding pipe.

[0038] After the first layer is screened, the motor 201 of the second layer is started to drive the corresponding rotating mechanism 200 to work. After screening, the larger particles discharged from each layer will be discharged through the corresponding pipe, and a collection box can be placed for collection. The collection set at the bottom of the device is used to collect fine sand.

[0039] In general, by setting a sand screening plate with a certain angle and its rotating function, not only can better screening be achieved, but also blockage can be effectively prevented, and material unloading is also easier. In addition, due to the rotating mechanism, the screening plate can be rotated in a specified direction while the rotation drive is stopped, so that large particles of impurities blocking the holes of the screening plate can be removed. Finally, due to the multi-stage screening device, a certain level of the screening plate can be opened and closed according to the selection, and the opening and closing components can be started to discharge impurities after sufficient screening.

[0040] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible, for example, the size, scale, structure, shape and proportion of various elements, and parameter values ​​such as temperature, pressure, etc., mounting arrangements, use of materials, color, directional changes, etc., without substantially departing from the novel angles and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims. In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described, that is, those features that are not relevant to the best mode currently considered to carry out the invention, or those features that are not relevant to implementing the invention.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-stage sand screening device for construction, characterized in that: include, A screening mechanism (100) comprising a housing (101), the housing (101) being connected to a first support frame (102), a plurality of groups of support legs (103) being arranged at the bottom of the housing (101); and, The rotating mechanism (200) comprises a motor (201), a driving rod (202) being provided on one side of the motor (201), and a long slot (202a) being provided inside the driving rod (202).

2. The multi-stage sand screening device for construction according to claim 1, characterized in that: An opening and closing component (104) is arranged inside the housing (101), and the opening and closing component (104) comprises a cylinder (104a), a movable column (104b) is arranged on one side of the cylinder (104a), and an opening and closing plate (104c) is fixedly connected to one side of the movable column (104b).

3. The multi-stage sand screening device for construction according to claim 2 is characterized in that: A sand screening plate (105) is slidably disposed inside the housing (101), the sand screening plate (105) comprising a limiting ring (105a) disposed around the top thereof, a discharge port (105b) being disposed at the bottom of the sand screening plate (105), and a second support frame (105c) being fixedly disposed at the bottom of the sand screening plate (105).

4. The multi-stage sand screening device for construction according to claim 3 is characterized in that: A limiting block (202b) is arranged inside the long slot (202a), and a round hole (202b-1) and a square hole (202b-2) are respectively opened on two sides of the limiting block (202b), and the round hole (202b-1) and the square hole (202b-2) are communicated with each other.

5. The multi-stage sand screening device for construction according to claim 4, characterized in that: A return spring (202b-3) is arranged inside the long slot (202a), a moving block (202c) is arranged on one side of the return spring (202b-3), a moving rod (202d) is fixedly arranged on one side of the moving block (202c), and a square block (202d-1) is arranged at one end of the moving rod (202d).

6. The multi-stage sand screening device for construction according to claim 5, characterized in that: A rotating column (203) is arranged on the outside of the driving rod (202), a sliding block (203a) is arranged on one side of the inside of the rotating column (203), a first arc-shaped groove (203c) is opened inside the rotating column (203), a first spring (203b) is arranged inside the first arc-shaped groove (203c), and a driving block (203d) is arranged on the outside of the rotating column (203).

7. The multi-stage sand screening device for construction according to claim 6, characterized in that: The driving block (203d) is connected to a limiting member (204), the limiting member (204) comprises a second spring (204a), a second arc-shaped groove (204b) is provided inside the limiting member (204), and a plurality of limiting protrusions (204c) are provided on the outside of the limiting member (204).

8. The multi-stage sand screening device for construction according to claim 7, characterized in that: A resistance member (205) is arranged outside the limiting member (204), a resistance block (205a) is arranged inside the resistance member (205), a cylindrical rod (205b) is arranged on one side of the resistance block (205a), and a third spring (205c) is arranged outside the cylindrical rod (205b).

9. The multi-stage sand screening device for construction according to claim 8, characterized in that: The diameter of the round hole (202b-1) is mutually compatible with the diameter of the moving rod (202d), and the square hole (202b-1) is mutually compatible with the square block (202d-1).

10. The multi-stage sand screening device for construction according to claim 9, characterized in that: The first spring (203b) and the second spring (204a) are both arc springs.

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