Sand screening device for constructional engineering

Abstract

The utility model belongs to the technical field of constructional engineering, and particularly relates to a constructional engineering sand screening device which comprises an upper box body and a lower box body which are connected with each other, smashing equipment is installed in the upper box body, the two sides of the bottom of the upper box body protrude downwards to form material distributing hoppers respectively, the bottoms of the material distributing hoppers are fixedly connected with circulation channels, and the circulation channels are communicated with the lower box body. A sand screening assembly is installed on the material distributing hopper and comprises a flow guide cylinder and a first driver which are installed in an inclined mode. The baffle is driven by the electric push rod to slide horizontally, then the circulation channel is opened and closed, sand grains can enter the screen, the first driver is operated to drive the screen to rotate to generate centrifugal force, and then the sand grains are rapidly screened.

Description

Technical Field

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

[0002] During the construction process of construction engineering, sand is needed. However, when using sand, it is necessary to screen the sand. However, since the sand contains large particles, it is easy to cause the blockage of the screen mesh, thereby reducing the screening efficiency and easily causing damage to the sand screening equipment.

[0003] The existing Chinese patent with the publication number of CN220941733U discloses a sand screening device for construction engineering, including a crushing box body, a discharge port, a vibration screening box and a discharge pipe. The discharge port is opened at the bottom of the crushing box body. The vibration screening box is fixedly connected to the bottom of the inner wall of the crushing box body. The discharge pipe is communicated with the bottom of the vibration screening box. At the top of the inside of the vibration screening box, there is a lifting installation frame. A filter screen is fixedly connected inside the lifting installation frame. On both sides of the bottom of the lifting installation frame, there are fixedly connected fixed disks.

[0004] In view of the above and the existing related technologies, the inventor believes that there are often the following defects: When cleaning the filter screen of this device, it is necessary to stop the machine. In the case of a large amount of large-particle sand, it will relatively affect the construction process and needs to be improved. Therefore, a sand screening device for construction engineering is proposed for the above problems. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes a sand screening device for construction engineering.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A sand screening device for construction engineering described in the utility model includes an upper box body and a lower box body which are connected to each other. A base is fixedly connected to the bottom of the lower box body. A crushing device is installed inside the upper box body. On both sides of the bottom of the upper box body, there are respectively downward protrusions to form a material distribution hopper. The bottom of the material distribution hopper is fixedly connected with a circulation channel. A sand screening component is installed on the material distribution hopper. The sand screening component includes an inclined installation guide cylinder and a driver one. The bottom end of the material distribution hopper penetrates and is fixedly connected with the guide cylinder. The lower end of the guide cylinder is rotatably connected with a screen mesh. The inclined screen mesh keeps the sand grains at the bottom and prevents them from being thrown out. The driver one is fixedly installed inside the lower box body in an inclined manner, and the driving end of the driver one is fixedly installed at the center of the screen mesh. When in use, the sand grains are put into the upper box body and broken by the crushing device. Then the sand grains enter the screen mesh through the material distribution hopper and the circulation channel. The driver one is operated to drive the screen mesh to rotate to generate centrifugal force, thereby quickly screening the sand grains.

[0007] Preferably, the sand screening assembly further includes a baffle, which penetrates and is slidably connected to the lower side wall of the material distribution hopper. The baffle is driven by an electric push rod to slide horizontally, thereby opening and closing the flow passage, enabling sand grains to enter the screen, and enabling the two groups of screens to be used alternately, achieving non-stop operation.

[0008] Preferably, the top of the baffle is hinged with an electric push rod, and the driving end of the electric push rod is hinged to the side wall of the material distribution hopper.

[0009] Preferably, the lower side wall of the lower box body is fixedly connected with an inclined discharge plate I, and the side wall of the lower box body is provided with a discharge port I corresponding to the lower end of the discharge plate I. The sand grains qualified by the screen fall onto the discharge plate I and slide out through the discharge port I.

[0010] Preferably, a partition layer is fixedly connected to the outside of the two guide cylinders, and the partition layer is fixedly connected to the lower box body.

[0011] Preferably, an inclined discharge plate II is fixedly connected to the inside of the partition layer, and the side wall of the lower box body is provided with a discharge port II corresponding to the lower end of the discharge plate II.

[0012] Preferably, a cleaning assembly is installed on the screen and the lower box body. The cleaning assembly includes an annular scraping plate, which is installed inside the screen. After one group of screens is completed, the driver II is operated. The driver II drives the lead screw to rotate, so that the scraping plate rises along the screen, thereby pushing the unqualified sand grains in the screen out and cleaning the screen, maintaining the long-term screening effect of the screen. The unqualified sand grains fall onto the discharge plate II and slide out through the discharge port II. After the cleaning is completed, the driver II runs in the reverse direction, so that the scraping plate returns to the bottom of the screen again. Subsequently, the flow passage is briefly opened to enable sand grains to enter the screen for screening. At this time, the other group of screens is cleaned. The above steps are cycled, and the corresponding cleaning is carried out during the alternating screening of the two groups of screens, realizing the non-stop cleaning of the screen and improving the construction efficiency.

[0013] Preferably, the cleaning assembly further includes a fixed bracket, which is fixedly installed inside the lower box body. A driver II is fixedly connected to the side wall of the fixed bracket. The driving end of the driver II is fixedly connected with a lead screw, which is threadedly connected with the scraping plate, and the bottom end of the lead screw is rotatably connected to the center of the screen.

[0014] Preferably, a plurality of guide rods are fixedly connected to the side wall of the fixed bracket, and one end of the guide rod penetrates the scraping plate and abuts against the inner side wall of the screen.

[0015] The advantages of the present utility model are as follows:

[0016] 1. The utility model drives a baffle to slide horizontally through an electric push rod, thereby opening and closing a circulation channel, enabling sand particles to enter the sieve mesh. The first driver is operated to drive the sieve mesh to rotate to generate centrifugal force, thereby quickly screening the sand particles.

[0017] 2. The utility model drives a lead screw to rotate through a second driver, causing a scraper to rise along the sieve mesh, thereby pushing out the unqualified sand particles in the sieve mesh and cleaning the sieve mesh to maintain the long-term screening effect of the sieve mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a sectional view of the lower box body of the present utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the sand screening assembly of the present utility model;

[0022] Figure 4 It is a sectional view of the material distribution hopper of the present utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the cleaning assembly of the present utility model.

[0024] In the figure: 1, upper box body; 2, lower box body; 3, material distribution hopper; 4, circulation channel; 5, sand screening assembly; 51, diversion cylinder; 52, sieve mesh; 53, first driver; 54, baffle; 55, electric push rod; 6, first discharge plate; 7, first discharge port; 8, partition layer; 9, second discharge plate; 10, second discharge port; 11, crushing equipment; 12, cleaning assembly; 121, scraper; 122, fixed bracket; 123, second driver; 124, lead screw; 125, guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] Embodiment 1

[0027] Please refer to Figures 1-4 As shown in the figure, a sand screening device for construction engineering includes an upper box body 1 and a lower box body 2 which are connected to each other. A base is fixedly connected to the bottom of the lower box body 2. A crushing device 11 is installed inside the upper box body 1. On both sides of the bottom of the upper box body 1, there are respectively downward protrusions forming a material distribution hopper 3. A flow channel 4 is fixedly connected to the bottom of the material distribution hopper 3. A sand screening assembly 5 is installed on the material distribution hopper 3. The sand screening assembly 5 includes an inclined installation guide cylinder 51 and a first driver 53. The bottom end of the material distribution hopper 3 penetrates and is fixedly connected to the guide cylinder 51. A screen mesh 52 is rotatably connected to the lower end of the guide cylinder 51. The inclined screen mesh 52 keeps the sand grains at the bottom and prevents them from being thrown out. The first driver 53 is fixedly installed inside the lower box body 2 in an inclined manner, and the driving end of the first driver 53 is fixedly installed at the center of the screen mesh 52. During use, the sand grains are put into the upper box body 1 and crushed by the crushing device 11. Subsequently, the sand grains enter the screen mesh 52 through the material distribution hopper 3 and the flow channel 4. The first driver 53 is operated to drive the screen mesh 52 to rotate to generate centrifugal force, thereby quickly screening the sand grains.

[0028] The sand screening assembly 5 further includes a baffle 54. The baffle 54 penetrates and is slidably connected to the lower side wall of the material distribution hopper 3. The baffle 54 is driven to slide horizontally by an electric push rod 55, thereby opening and closing the flow channel 4, enabling the sand grains to enter the screen mesh 52 and allowing the two screen meshes 52 to be used alternately to achieve non-stop operation.

[0029] The top of the baffle 54 is hinged with an electric push rod 55, and the driving end of the electric push rod 55 is hinged with the side wall of the material distribution hopper 3.

[0030] An inclined discharge plate 6 is fixedly connected to the lower side wall of the lower box body 2. An outlet 7 is provided on the side wall of the lower box body 2 corresponding to the lower end of the discharge plate 6. The sand grains screened by the screen mesh 52 fall onto the discharge plate 6 and slide out through the outlet 7.

[0031] Embodiment 2

[0032] Compared with Embodiment 1, please refer to Figure 5 As shown in the figure, the present utility model provides another implementation manner. A partition layer 8 is fixedly connected to the outside of the two guide cylinders 51, and the partition layer 8 is fixedly connected to the lower box body 2.

[0033] An inclined discharge plate 9 is fixedly connected to the inside of the partition layer 8. An outlet 10 is provided on the side wall of the lower box body 2 corresponding to the lower end of the discharge plate 9.

[0034] A cleaning component 12 is installed on the screen mesh 52 and the lower box body 2. The cleaning component 12 includes an annular scraping plate 121. The scraping plate 121 is installed inside the screen mesh 52. After one set of the screen mesh 52 is completed, the second driver 123 is operated. The second driver 123 drives the lead screw 124 to rotate, so that the scraping plate 121 rises along the screen mesh 52, thereby pushing out the unqualified sand grains in the screen mesh 52 and cleaning the screen mesh 52 to maintain the long-term screening effect of the screen mesh 52. The unqualified sand grains fall onto the second discharge plate 9 and slide out through the second discharge port 10. After the cleaning is completed, the second driver 123 runs in the reverse direction, so that the scraping plate 121 returns to the bottom of the screen mesh 52 again. Subsequently, the circulation channel 4 is briefly opened to allow the sand grains to enter the screen mesh 52 for screening. At this time, the other set of the screen mesh 52 is cleaned. By repeating the above steps and cleaning the corresponding screen mesh 52 during the alternating screening of the two sets of screen mesh 52, the non-stop cleaning of the screen mesh 52 is realized, and the construction efficiency is improved.

[0035] The cleaning component 12 further includes a fixed bracket 122. The fixed bracket 122 is fixedly installed inside the lower box body 2. The side wall of the fixed bracket 122 is fixedly connected with the second driver 123. The driving end of the second driver 123 is fixedly connected with a lead screw 124. The lead screw 124 is threadedly connected with the scraping plate 121, and the bottom end of the lead screw 124 is rotatably connected with the center of the screen mesh 52.

[0036] A plurality of guide rods 125 are fixedly connected to the side wall of the fixed bracket 122, and one end of the guide rod 125 penetrates through the scraping plate 121 and abuts against the inner side wall of the screen mesh 52.

[0037] Those skilled in the art should connect all the electrical components in this case to their adapted power supplies through wires, and should select a suitable controller according to the actual situation and electrically connect it to the first driver 53, the second driver 123 and the electric push rod 55 to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working in sequence in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and will not explain the electrical control.

[0038] Working principle: When in use, the sand grains are put into the upper box body 1 and broken by the crushing device 11. Subsequently, the sand grains enter the screen mesh 52 through the distribution hopper 3 and the circulation channel 4. The first driver 53 is operated to drive the screen mesh 52 to rotate to generate a centrifugal force, thereby quickly screening the sand grains. The electric push rod 55 drives the baffle 54 to slide horizontally, thereby opening and closing the circulation channel 4, so that the sand grains can enter the screen mesh 52 and the two sets of screen mesh 52 can be used alternately.

[0039] After one set of screening meshes 52 is completed, drive two 123 is operated. Drive two 123 drives lead screw 124 to rotate, causing scraper 121 to rise along screening mesh 52, thereby pushing out unqualified sand grains in screening mesh 52 and cleaning screening mesh 52 to maintain the long-term screening effect of screening mesh 52. The unqualified sand grains fall onto discharge plate two 9 and slide out through discharge port two 10. After the cleaning is completed, drive two 123 runs in the reverse direction, causing scraper 121 to return to the bottom of screening mesh 52 again. Subsequently, flow passage 4 is briefly opened to allow sand grains to enter screening mesh 52 for screening. At this time, the other set of screening meshes 52 is cleaned. By repeating the above steps, the two sets of screening meshes 52 always maintain opposite working states, realizing the non-stop cleaning of screening mesh 52 and improving the construction efficiency.

[0040] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A sand screening device for construction engineering, comprising an upper box (1) and a lower box (2) connected to each other, wherein a crushing device (11) is installed inside the upper box (1), characterized in that: Both sides of the bottom of the upper box body (1) are respectively protruded downwards to form a distribution hopper (3), the bottom of the distribution hopper (3) is fixedly connected to a circulation channel (4), a sand screening assembly (5) is installed on the distribution hopper (3), and the sand screening assembly (5) comprises an inclined guide cylinder (51) and a driver 1 (53), the bottom end of the distribution hopper (3) passes through and is fixedly connected to the guide cylinder (51), the lower end of the guide cylinder (51) is rotatably connected to a screen (52), the driver 1 (53) is obliquely fixedly installed inside the lower box body (2), and the driving end of the driver 1 (53) is fixedly installed at the center of the screen (52).

2. The construction engineering sand screening device according to claim 1, characterized in that: The sand screening assembly (5) further comprises a baffle (54), wherein the baffle (54) penetrates through and is slidably connected to the lower side wall of the distribution hopper (3).

3. The construction engineering sand screening device according to claim 2, characterized in that: An electric push rod (55) is hingedly connected to the top of the baffle (54), and a driving end of the electric push rod (55) is hingedly connected to the side wall of the material distribution hopper (3).

4. The construction engineering sand screening device according to claim 1, characterized in that: The lower side wall of the lower box body (2) is fixedly connected to an inclined discharge plate (6), and a discharge port (7) is provided at the lower end of the side wall of the lower box body (2) corresponding to the discharge plate (6).

5. The construction engineering sand screening device according to claim 1, characterized in that: A partition layer (8) is fixedly connected to the outside of the two guide cylinders (51), and the partition layer (8) is fixedly connected to the lower box body (2).

6. The construction engineering sand screening device according to claim 5, characterized in that: The interior of the partition layer (8) is fixedly connected to a second discharge plate (9) which is arranged obliquely, and a second discharge port (10) is provided on the side wall of the lower box body (2) corresponding to the lower end of the second discharge plate (9).

7. The construction engineering sand screening device according to claim 1, characterized in that: A cleaning assembly (12) is installed on the screen (52) and the lower box (2), wherein the cleaning assembly (12) comprises an annular scraper (121), and the scraper (121) is installed inside the screen (52).

8. The construction engineering sand screening device according to claim 7, characterized in that: The cleaning assembly (12) further comprises a fixed bracket (122), the fixed bracket (122) being fixedly mounted inside the lower box body (2), the side wall of the fixed bracket (122) being fixedly connected to a second driver (123), the driving end of the second driver (123) being fixedly connected to a lead screw (124), the lead screw (124) being threadedly connected to the scraper (121), and the bottom end of the lead screw (124) being rotatably connected to the center of the screen (52).

9. The construction engineering sand screening device according to claim 8, characterized in that: A plurality of guide rods (125) are fixedly connected to the side wall of the fixed bracket (122), and one end of the guide rod (125) passes through the scraper (121) and abuts against the inner side wall of the screen (52).

Images