A sand and gravel screening device for construction engineering

Abstract

The utility model discloses a sand and gravel screening device for construction engineering, comprising an intermittent feeding mechanism and a screening mechanism. The device adopts a combined design of the intermittent feeding mechanism and the screening mechanism to realize the intermittent feeding and screening process of sand and gravel, and reduces the pressure of the inclined mesh plates by alternately using different groups of inclined mesh plates, improves the screening efficiency, and ensures the purpose of fully screening the sand and gravel; adopts a combined design of incomplete gears and motors to realize automatic control of the screening device, reduces manual operation, reduces energy consumption, and improves energy-saving effect; the inclined mesh plates and guide vertical plates in the screening mechanism are reasonably designed, and can make large particles of sand and gravel pass through the guide vertical plates smoothly into the aggregate box under the action of gravity, thereby improving the screening effect and reducing impurity residues; the device has a reasonable structure, and the various components are coordinated and cooperated during operation, and the alternate use of inclined mesh plates reduces the pressure during equipment operation and improves the continuous operation stability of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and gravel screening, in particular to a sand and gravel screening device for construction engineering. Background Art

[0002] Sand and gravel are a common base material in the construction industry. During use, their purpose is determined by the size of their particles. Therefore, screening devices are needed to screen the sand and gravel to meet different usage requirements.

[0003] The existing patent application number is: CN202121860359.8, and the patent name is: A utility model patent for a sand and gravel screening device for construction projects. This solution sets a servo motor to drive the screw to rotate, and the screw is threadedly connected to the threaded plate, so that the threaded plate drives the support block to move upward, and the support block pushes the connecting rod to move upward. The connecting rod uses the slider to make the baffle plate intermittently discharge the raw materials into the hopper. At the same time, the threaded plate pulls the screening box through the connecting block for screening, thereby effectively helping the user to intermittently discharge the raw materials during screening, which is convenient for the user to use.

[0004] Although the above-mentioned equipment has the function of intermittent unloading, when in use, it takes a certain amount of time for the baffle plate to rise and fall during the process of intermittent unloading of raw materials into the hopper. During this time gap, the equipment is idle and cannot carry out continuous unloading and screening actions, resulting in reduced screening efficiency. Moreover, the capacity of its hopper is small, which requires frequent refilling, making it inconvenient to use and needs to be improved. Utility Model Content

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

[0006] Therefore, in order to solve the above technical problems, the utility model provides the following technical solutions: a sand and gravel screening device for construction engineering, comprising an intermittent feeding mechanism and a screening mechanism;

[0007] The intermittent unloading mechanism comprises an unloading chamber and an unloading baffle, a unloading opening is provided at the bottom of the unloading chamber, and the unloading baffle is horizontally slidably connected to the unloading opening; the unloading baffle is fixed on a telescopic slide rod, the telescopic slide rod is fixed on a telescopic tooth plate, the telescopic tooth plate is connected to a gear, and the gear is connected to a motor;

[0008] The screening mechanism includes a screening chamber, an inclined mesh plate, a guide vertical plate and a collection box. The screening chamber is arranged below the discharge chamber, the inclined mesh plate is arranged below the discharge port, the bottom end of the inclined mesh plate is fixedly connected to the guide vertical plate, the bottom end outlet of the guide vertical plate is located at the top of the collection box with the opening facing upward, the two sides of the bottom of the screening chamber are connected with discharge channels, and the bottom end of the discharge channel is also arranged with a collection box.

[0009] As a preferred solution of the sand and gravel screening device for construction engineering described in the utility model, wherein: discharge ports are opened on both sides of the discharge chamber, each group of discharge ports is connected to a group of discharge baffles, and the two groups of discharge baffles are respectively fixedly connected to the two sides of the telescopic tooth plate.

[0010] As a preferred solution of the sand and gravel screening device for construction engineering described in the utility model, the telescopic tooth plate is in an annular structure, and meshing rack groups are arranged on the upper and lower inner walls of its annular cavity. The meshing rack group is intermittently meshed and connected with the gear, and the gear is an incomplete gear.

[0011] As a preferred solution of the sand and gravel screening device for construction engineering described in the utility model, the intermittent feeding mechanism also includes a storage hopper and a feeding channel, the storage hopper is arranged at the top of the feeding chamber, the bottom end of the storage hopper is connected to the feeding port through the feeding channel, and the feeding baffle is arranged at the bottom end of the feeding channel.

[0012] As a preferred solution of the sand and gravel screening device for construction engineering of the utility model, wherein: the inclined mesh plates are provided with two groups, and the two groups of inclined mesh plates are symmetrically arranged on both sides of the screening chamber.

[0013] As a preferred solution of the sand and gravel screening device for construction engineering described in the utility model, wherein: the bottom end of each group of the inclined mesh plates is fixedly connected to a group of material guide inclined plates, the inclination direction of the material guide inclined plates is opposite to that of the inclined mesh plates, and the bottom end of the material guide inclined plates is connected to the top end of the discharge channel.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses a sand and gravel screening device for construction engineering, which adopts the combined design of intermittent feeding mechanism and screening mechanism to realize the intermittent feeding and screening process of sand and gravel, and reduces the pressure of the inclined mesh plates and improves the screening efficiency by alternately using different groups of inclined mesh plates, thereby ensuring the purpose of fully screening the sand and gravel; adopts the combined design of incomplete gears and motors to realize the automatic control of the screening device, reduces the manpower operation, reduces the energy consumption and improves the energy-saving effect; the inclined mesh plates and guide vertical plates in the screening mechanism are reasonably designed, which can make large particles of sand and gravel pass through the guide vertical plates smoothly into the aggregate box under the action of gravity, effectively improve the screening effect and reduce the residual impurities; the equipment has a reasonable structure, and the various components are coordinated and cooperated during the operation. The alternating use of inclined mesh plates reduces the pressure of the equipment during operation, improves the continuity and operation stability of the equipment, and reduces the equipment failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0019] Figure 3 It is a schematic diagram of the internal structure of the unloading chamber of the utility model.

[0020] Figure 4 This is a schematic diagram of the installation structure of the gear of the utility model.

[0021] In the figure: 100, intermittent unloading mechanism; 101, unloading chamber; 102, unloading baffle; 103, unloading port; 104, telescopic slide rod; 105, telescopic tooth plate; 106, gear; 107, motor; 108, storage hopper; 109, unloading channel;

[0022] 200, screening mechanism; 201, screening chamber; 202, inclined mesh plate; 203, flow guide vertical plate; 204, material collection box; 205, material discharge channel; 206, material guide inclined plate. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, 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.

[0024] 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.

[0025] 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.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, 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

[0027] Reference Figures 1 to 4 , which is the first embodiment of the utility model, provides a sand and gravel screening device for construction engineering, including an intermittent feeding mechanism 100 and a screening mechanism 200;

[0028] The intermittent unloading mechanism 100 includes an unloading chamber 101 and an unloading baffle 102. A unloading port 103 is provided at the bottom of the unloading chamber 101. The unloading baffle 102 is horizontally slidably connected to the unloading port 103. The unloading baffle 102 is fixed on a telescopic slide rod 104. The telescopic slide rod 104 is fixed on a telescopic toothed plate 105. The telescopic toothed plate 105 is connected to a gear 106. The gear 106 is connected to a motor 107. Unloading ports 103 are provided on both sides of the unloading chamber 101. Each group of unloading ports 103 is connected to a group of unloading baffles 102. The two groups of unloading baffles The plates 102 are fixedly connected to the two sides of the telescopic tooth plate 105 respectively; the telescopic tooth plate 105 is annular in structure, and meshing rack groups are arranged on the upper and lower inner walls of its annular cavity, and the meshing rack groups are intermittently meshed and transmission-connected with the gear 106, and the gear 106 is an incomplete gear; the intermittent unloading mechanism 100 also includes a storage hopper 108 and a unloading channel 109, and the storage hopper 108 is arranged at the top of the unloading chamber 101, and the bottom end of the storage hopper 108 is connected to the unloading port 103 through the unloading channel 109, and the unloading baffle 102 is arranged at the bottom end of the unloading channel 109.

[0029] The screening mechanism 200 comprises a screening chamber 201, an inclined mesh plate 202, a guide vertical plate 203 and a collection box 204. The screening chamber 201 is arranged below the unloading chamber 101, the inclined mesh plate 202 is arranged below the unloading port 103, the bottom end of the inclined mesh plate 202 is fixedly connected to the guide vertical plate 203, the bottom end outlet of the guide vertical plate 203 is located at the top of the collection box 204 with the opening facing upward, and the bottom two sides of the screening chamber 201 are connected to the guide vertical plate 203. It is connected to a discharge channel 205, and a collecting box 204 is also arranged at the bottom end of the discharge channel 205; there are two groups of inclined mesh plates 202, and the two groups of inclined mesh plates 202 are symmetrically arranged on both sides of the screening chamber 201; the bottom end of each group of the inclined mesh plates 202 is fixedly connected to a group of material guide inclined plates 206, and the inclined direction of the material guide inclined plates 206 is opposite to that of the inclined mesh plates 202, and the bottom end of the material guide inclined plates 206 is connected to the top of the discharge channel 205.

[0030] In this embodiment, when in use, the sand and gravel to be screened are first poured into the two storage hoppers 108 respectively, and then the power supply of the motor 107 is turned on, so that the motor 107 drives the incomplete gear 106 to rotate. When the gear 106 is engaged with the rack group on the upper or lower part of the telescopic toothed plate 105, the telescopic slide bar 104 is pushed to move horizontally through the telescopic toothed plate 105, thereby driving one group of unloading baffles 102 to move to one side of the unloading port 103, exposing the unloading port 103 on one side, so that the sand and gravel in the storage hopper 108 connected thereto falls out. The sand and gravel fall down and are screened by the inclined mesh plate 202 below, so that the large particles of sand and gravel enter the collecting box 204 at the bottom through the guide vertical plate 203 under the action of gravity; the other set of unloading baffles 102 move to the unloading port 103 used in conjunction with it, so that the unloading port 103 is in a closed state; in this way, the purpose of intermittent unloading of the two sets of inclined mesh plates 202 is achieved, the screening effect is improved, and the purpose of fully screening the sand and gravel is achieved. The two sets of inclined mesh plates 202 are used alternately, which to a certain extent reduces the pressure of the inclined mesh plates 202 and increases the screening amount of sand and gravel.

[0031] It is worth noting that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A sand and gravel screening device for construction engineering, characterized in that: It comprises an intermittent feeding mechanism (100) and a screening mechanism (200); The intermittent material discharging mechanism (100) comprises a material discharging chamber (101) and a material discharging baffle (102); a material discharging opening (103) is provided at the bottom of the material discharging chamber (101); the material discharging baffle (102) is horizontally slidably connected to the material discharging opening (103); the material discharging baffle (102) is fixed on a telescopic sliding rod (104); the telescopic sliding rod (104) is fixed on a telescopic toothed plate (105); the telescopic toothed plate (105) is connected to a gear (106); and the gear (106) is connected to a motor (107); The screening mechanism (200) comprises a screening chamber (201), an inclined mesh plate (202), a guide vertical plate (203) and a material collection box (204); the screening chamber (201) is arranged below the material discharge chamber (101); the inclined mesh plate (202) is arranged below the material discharge port (103); the bottom end of the inclined mesh plate (202) is fixedly connected to the guide vertical plate (203); the bottom end outlet of the guide vertical plate (203) is located at the top of the material collection box (204) with an opening facing upward; the two sides of the bottom of the screening chamber (201) are connected to discharge channels (205); and the bottom end of the discharge channel (205) is also arranged with a material collection box (204).

2. The sand and gravel screening device for construction engineering as claimed in claim 1, characterized in that: Both sides of the material discharge chamber (101) are provided with material discharge openings (103), each group of material discharge openings (103) is connected to a group of material discharge baffles (102), and the two groups of material discharge baffles (102) are respectively fixedly connected to the two sides of the telescopic tooth plate (105).

3. The sand and gravel screening device for construction engineering as claimed in claim 1, characterized in that: The telescopic toothed plate (105) is an annular structure, and meshing rack groups are arranged on the upper and lower inner walls of its annular cavity. The meshing rack groups are intermittently meshed and transmission-connected with the gear (106), and the gear (106) is an incomplete gear.

4. The sand and gravel screening device for construction engineering as claimed in claim 1, characterized in that: The intermittent material discharging mechanism (100) further comprises a storage hopper (108) and a material discharging channel (109); the storage hopper (108) is arranged at the top of the material discharging chamber (101); the bottom end of the storage hopper (108) is connected to the material discharging port (103) through the material discharging channel (109); and the material discharging baffle (102) is arranged at the bottom end of the material discharging channel (109).

5. The sand and gravel screening device for construction engineering as claimed in claim 1, characterized in that: The inclined mesh plates (202) are provided in two groups, and the two groups of inclined mesh plates (202) are arranged symmetrically on both sides of the screening chamber (201).

6. The sand and gravel screening device for construction engineering as claimed in claim 1, characterized in that: The bottom end of each group of inclined mesh plates (202) is fixedly connected to a group of material guide inclined plates (206), the inclined direction of the material guide inclined plates (206) is opposite to that of the inclined mesh plates (202), and the bottom end of the material guide inclined plates (206) is connected to the top end of the discharge channel (205).

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