A screening device for construction engineering

Abstract

The utility model discloses a sieve material device for engineering construction, including U type frame and the base of fixed connection in U type frame front side, the inside of U type frame is provided with conveyer belt and is located the screening subassembly above conveyer belt, the inside of conveyer belt is connected to the base, the bottom of U type frame is provided with drying assembly. This sieve material device for engineering construction, through the control swing mechanism promotes the quick back and forth sliding of screening frame in the inside of guide frame, and the sand on the screen plate can be shaken and the tines under the cross bar are quickly scattered when the screening frame slides, the sand falls on the conveyer belt through the screen plate, and the granular impurities are stopped by the screen plate, and roll to the rear side of screening frame and drop into the collecting box to be collected, and the collecting box can be extracted along the clamping groove for cleaning, and then the impurities in the sand can be quickly cleaned, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, specifically to a screening device for engineering construction. Background Technology

[0002] Engineering construction refers to the actual physical construction process in buildings, infrastructure or other engineering projects. During construction, some materials need to be screened to meet specific engineering requirements, such as yellow sand, cement, and gravel.

[0003] The existing patent authorization announcement number CN223011141U discloses a multi-stage screening device for engineering construction. Some sand is poured into the sand screening bucket. The gravity of the sand adhering to the inner wall of the sand screening bucket and the reverse elastic force of the return spring are used to move the movable block and the sand screening bucket downwards to reset. The adhering sand hits the filter screen of the sand screening bucket and generates a reaction force to bounce up, so that the sand can be separated without affecting the subsequent screening. At the same time, the rotation of the movable tube is used to make the blades disperse the bounced sand.

[0004] When using the above-mentioned patent, small particles such as gravel are easily mixed into the sand. After the sand is introduced into the sand screening bucket for dispersion and breaking, the small particles will be trapped inside the sand screening bucket. The sand screening bucket is inconvenient to disassemble and requires manual cleaning of the small particles, which is not convenient to use. In addition, when the sand has a high moisture content, it is more sticky and can easily affect the efficiency of sand dispersal. Utility Model Content

[0005] The purpose of this utility model is to provide a screening device for engineering construction, so as to solve the problems in the above-mentioned background technology that small particulate impurities are trapped inside the sand screening bucket, requiring manual cleaning of small particulate impurities, which is not convenient to use, and the sand has a large stickiness when the moisture content is high, which can easily affect the efficiency of sand dispersal.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screening device for engineering construction, comprising a U-shaped frame and a base fixedly connected to the front side of the U-shaped frame. A conveyor belt and a screening assembly located above the conveyor belt are arranged on the inner side of the U-shaped frame. The conveyor belt communicates with the interior of the base. A drying assembly is arranged at the bottom of the U-shaped frame. The screening assembly includes two guide frames fixedly installed on the upper inner side of the U-shaped frame and arranged symmetrically on the left and right. A screening frame is movably engaged on the inner side of the two guide frames. The rear side of the screening frame is open. A mesh plate is fixedly connected to the bottom of the screening frame. A swing mechanism connected to the screening frame is fixedly installed on the front side of the U-shaped frame. Multiple crossbars are fixedly installed at equal intervals on the top of the two guide frames. Rake teeth extending into the screening frame are equidistantly arranged at the bottom of each of the multiple crossbars along the length of the crossbar. A slot is fixedly connected to the rear of the bottom of the guide frame, and a collection box is movably engaged inside the slot.

[0007] Preferably, the guide frame is arranged with a higher front and a lower back, and the collection box is located on the lower side of the guide frame.

[0008] Preferably, the plurality of crossbars are equidistantly arranged along the length of the guide frame, and the rake teeth have a conical structure.

[0009] Preferably, the swing mechanism includes a servo motor and a connecting rod. The servo motor is fixedly installed on the front side of the U-shaped frame, and the connecting rod is movably hinged to the front side of the screening frame. The connecting rod is T-shaped. A turntable is fixedly installed on the output shaft of the servo motor. A horizontally arranged sliding groove is opened inside the connecting rod. A bolt located in the sliding groove is threaded on the bottom of the turntable. The bolt is offset from the axis of the turntable.

[0010] Preferably, the drying assembly includes two blower hoods and a heating box. The two blower hoods are respectively fixedly installed symmetrically on the upper left and right sides inside the U-shaped frame. The heating box is fixedly installed at the bottom of the U-shaped frame. The rear side of the heating box is connected to an exhaust fan fixedly installed at the bottom of the U-shaped frame. The rear side of the exhaust fan is connected to an air supply pipe that is connected to the two blower hoods respectively. The inner side of each of the two blower hoods is provided with an air outlet facing the screening assembly.

[0011] Preferably, the heating box is equipped with an electric heater inside, and an air inlet is provided on the front side of the heating box.

[0012] Preferably, a rotary screen with an advanced inclined arrangement is rotatably installed inside the base, and a guide frame corresponding to the rotary screen is provided on the front side of the conveyor belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By controlling the swing mechanism, the screening frame is pushed to slide back and forth quickly inside the guide frame. When the screening frame slides, it can quickly shake the sand on the screen plate and collide with the rake teeth under the crossbar to quickly break it up. The sand passes through the screen plate and falls onto the conveyor belt, while the particulate impurities are blocked by the screen plate, roll to the rear of the screening frame and fall into the collection box for collection. The collection box can be pulled out along the slot for cleaning, which facilitates the quick cleaning of impurities in the sand and improves the ease of use.

[0015] 2. External air is drawn in from the front of the heating chamber by an air pump. After entering the heating chamber, it is heated and then transmitted to two blower hoods through air supply pipes. Finally, the air is blown from the air outlets inside the blower hoods onto the screening frame. The hot air blows the sand, accelerates the evaporation of moisture in the sand, effectively prevents the sand from clumping and sticking together, and improves the dispersion effect and efficiency. Attached Figure Description

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

[0017] Figure 2 This is an exploded view of the structure of the screening component of this utility model;

[0018] Figure 3 This is a schematic diagram of the swing mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the drying component of this utility model;

[0020] Figure 5 This is a schematic diagram of the air outlet structure of this utility model.

[0021] In the diagram: 1. U-shaped frame; 2. Base; 3. Rotary drum screen; 4. Conveyor belt; 5. Screening assembly; 51. Guide frame; 52. Screening frame; 53. Mesh plate; 54. Swinging mechanism; 541. Servo motor; 542. Connecting rod; 543. Turntable; 544. Slide groove; 545. Bolt; 55. Crossbar; 56. Rake teeth; 57. Slot; 58. Collection box; 6. Drying assembly; 61. Blower hood; 62. Heating box; 63. Exhaust fan; 64. Air supply pipe; 65. Air outlet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a technical solution: a screening device for engineering construction, including a U-shaped frame 1 and a base 2 fixedly connected to the front side of the U-shaped frame 1. A conveyor belt 4 and a screening component 5 located above the conveyor belt 4 are arranged inside the U-shaped frame 1. The conveyor belt 4 is connected to the interior of the base 2. A drying component 6 is arranged at the bottom of the U-shaped frame 1. The screening component 5 includes two guide frames 51 fixedly installed on the upper inner side of the U-shaped frame 1 and arranged symmetrically on the left and right. A screening frame 52 is movably engaged inside the two guide frames 51. The rear side of the screening frame 52 is open. A screen plate 53 is fixedly connected to the bottom of the screening frame 52. A swing mechanism 54 connected to the screening frame 52 is fixedly installed on the front side of the U-shaped frame 1. Multiple crossbars 55 are equidistantly arranged on the top of the two guide frames 51. The bottom of the multiple crossbars 55 are all... Rake teeth 56 are equidistantly arranged along the length of the crossbar 55, extending into the screening frame 52. A slot 57 is fixedly connected to the rear of the bottom of the guide frame 51. A collection box 58 is movably engaged inside the slot 57. By controlling the swing mechanism 54, the screening frame 52 is pushed to slide back and forth quickly inside the guide frame 51. When the screening frame 52 slides, it can quickly shake the sand on the screen plate 53. The crossbar 55 and the rake teeth 56 are located above the screen plate 53. With the sliding of the screening frame 52, the clumps of sand collide and break up between the rake teeth 56. The sand passes through the screen plate 53 and falls onto the conveyor belt 4. Particle impurities are blocked by the screen plate 53, roll to the rear of the screening frame 52 and fall into the collection box 58 for collection. The collection box 58 can be pulled out along the slot 57 for cleaning, which facilitates the quick cleaning of impurities in the sand and improves the ease of use.

[0024] The guide frame 51 is set with the front higher than the back, and the collection box 58 is set on the lower side of the guide frame 51. The inclined design allows the particle impurities intercepted by the screen plate 53 to roll naturally backward along the inclined surface of the screen plate 53 by their own gravity during the back-and-forth sliding of the screening frame 52. This effectively avoids the accumulation of impurities in the screening frame 52 and ensures that the impurities can fall accurately into the collection box 58 located on the lower side of the guide frame 51. This further improves the efficiency and thoroughness of impurity collection, and also reduces the interference caused by impurity residue to the screening process.

[0025] The swing mechanism 54 includes a servo motor 541 and a connecting rod 542. The servo motor 541 is fixedly mounted on the front side of the U-shaped frame 1, and the connecting rod 542 is movably hinged to the front side of the screening frame 52. The connecting rod 542 is T-shaped. A turntable 543 is fixedly mounted on the output shaft of the servo motor 541. A transversely arranged groove 544 is opened inside the connecting rod 542. A bolt 545 located in the groove 544 is threaded onto the bottom of the turntable 543. The bolt 545 is offset from the axis of the turntable 543. The servo motor 541 can be of model MR-J2S. When the servo motor 541 starts, its output shaft drives the turntable 543 to rotate. Since the bolt 545 is off the axis of the turntable 543 and located in the groove 544 of the connecting rod 542, the rotation of the turntable 543 is converted into the back-and-forth oscillation of the connecting rod 542 through the bolt 545. This causes the screening frame 52 to slide stably back and forth in the guide frame 51. The sliding frequency and amplitude of the screening frame 52 can be precisely controlled to ensure that the screening process is uniform and efficient, and to avoid problems such as insufficient sand screening or poor impurity separation caused by unstable sliding.

[0026] Multiple crossbars 55 are equidistantly arranged along the length of the guide frame 51. The rake teeth 56 have a conical structure with their tips pointing downwards and close to the screen surface of the screening frame 52. When the screening frame 52 slides back and forth, the rake teeth 56 can comb and flatten the sand on the screen, effectively preventing the sand from accumulating and forming clumps on the screen, ensuring that each grain of sand can fully contact the screen plate 53. The conical rake teeth 56 can also break up larger grains of sand during the combing process. The crossbars 55 are fixedly connected to the guide frame 51 by welding, ensuring the structural stability of the rake teeth 56 during operation, avoiding loosening or deformation of the rake teeth 56 due to frequent sliding of the screening frame 52, and extending the service life of the entire screening device.

[0027] The base 2 is equipped with a forward-inclined rotary screen 3. The front side of the conveyor belt 4 is equipped with a guide frame corresponding to the rotary screen 3. The front side of the guide frame has an inclined guide slope, which can smoothly guide the sand conveyed by the conveyor belt 4 to the feed port of the rotary screen 3, and prevent the sand from scattering or accumulating during the fall. The inner wall of the rotary screen 3 is welded with spiral guide blades. When the rotary screen 3 rotates, the guide blades can drive the sand to make a spiral forward motion in the cylinder, prolonging the residence time of the sand in the rotary screen 3, so that the sand can fully contact the rotary screen 3 and improve the screening effect. The two ends of the rotary screen 3 are rotatably connected to the inner wall of the base 2 through bearings.

[0028] Please see Figure 1 , Figure 4 and Figure 5The drying component 6 includes two blower hoods 61 and a heating box 62. The two blower hoods 61 are fixedly installed symmetrically on the upper left and right sides inside the U-shaped frame 1. The heating box 62 is fixedly installed at the bottom of the U-shaped frame 1. The rear side of the heating box 62 is connected to an air extractor 63 fixedly installed at the bottom of the U-shaped frame 1. The rear side of the air extractor 63 is connected to an air supply pipe 64 that is connected to the two blower hoods 61 respectively. The inner side of each of the two blower hoods 61 is provided with an air outlet 65 facing the screening component 5. The air extractor 63 can be an XGB-550 model. When the air extractor 63 is started, external air is drawn in from the front of the heating box 62, heated after entering the heating box 62, and then transmitted to the two blower hoods 61 through the air supply pipe 64. Finally, it is blown from the air outlet 65 inside the blower hood 61 towards the screening frame 52. The hot air blows the sand, accelerates the evaporation of moisture in the sand, effectively prevents the sand from clumping and sticking together, and improves the dispersion effect and efficiency.

[0029] The heating chamber 62 is equipped with an electric heater, which can be of model SRY-220V. An air inlet is provided on the front side of the heating chamber 62, and a removable dust filter is installed at the air inlet to effectively filter dust and impurities in the air.

[0030] Working principle: Sand is fed onto the screen plate 53 inside the screening frame 52. The servo motor 541 is activated, driving the turntable 543 to rotate. The rotation of the turntable 543 causes the eccentrically mounted bolt 545 to rotate. As the bolt 545 moves in a circular motion around the axis of the turntable 543, the sliding push-pull connecting rod 542 within the slide groove 544 slides. This, in turn, pushes and pulls the screening frame 52, which slides rapidly back and forth inside the guide frame 51. During this sliding process, the screening frame 52 rapidly shakes the sand on the screen plate 53. The horizontal bar 542 above the screen plate 53... 5 and rake teeth 56 are in a static and fixed state. As the screening frame 52 slides back and forth rapidly, the clumps of sand collide and break up between the rake teeth 56. The sand then falls through the screen plate 53 onto the conveyor belt 4. After the conveyor belt 4 is started, the sand is transported towards the base 2. Meanwhile, particulate impurities are intercepted on the screen plate 53 and roll towards the rear of the screening frame 52, falling into the collection box 58 for collection. The collection box 58 can be pulled out along the slot 57 for cleaning. The sand is then transported by the conveyor belt 4 to the guide frame on its front side and enters the interior of the rotary screen 3. The rotary screen 3 is rotated to further screen the sand.

[0031] By turning on the exhaust fan 63 and energizing the electric heater inside the heating box 62, external air is drawn into the heating box 62 through the air inlet on the front side. After being heated by the electric heater, the air is delivered through the air pipe 64 to the two blower hoods 61 and blown onto the screening frame 52 from the air outlets 65 on their inner sides. The hot air blows the sand, accelerating the evaporation of moisture in the sand, which can effectively reduce sand clumping and adhesion, and improve the dispersion effect and efficiency. The above is the working process of the entire device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening device for engineering construction, comprising a U-shaped frame (1) and a base (2) fixedly connected to the front side of the U-shaped frame (1), characterized in that: The U-shaped frame (1) is provided with a conveyor belt (4) and a screening component (5) located above the conveyor belt (4). The conveyor belt (4) is connected to the interior of the base (2). The bottom of the U-shaped frame (1) is provided with a drying component (6). The screening assembly (5) includes two guide frames (51) fixedly installed on the upper inner side of the U-shaped frame (1) and arranged symmetrically on the left and right. A screening frame (52) is movably engaged on the inner side of the two guide frames (51). The rear side of the screening frame (52) is open. A screen plate (53) is fixedly connected to the bottom of the screening frame (52). A swing mechanism (54) connected to the screening frame (52) is fixedly installed on the front side of the U-shaped frame (1). A plurality of crossbars (55) are fixedly installed at equal intervals on the top of the two guide frames (51). Rake teeth (56) extending into the screening frame (52) are equidistantly arranged at the bottom of the plurality of crossbars (55) along the length direction of the crossbars (55). A slot (57) is fixedly connected to the rear of the bottom of the guide frame (51). A collection box (58) is movably engaged inside the slot (57).

2. The screening device for engineering construction according to claim 1, characterized in that: The guide frame (51) is arranged with the front higher than the back, and the collection box (58) is located on the lower side of the guide frame (51).

3. The screening device for engineering construction according to claim 1, characterized in that: Multiple crossbars (55) are equidistantly arranged along the length of the guide frame (51), and the rake teeth (56) have a conical structure.

4. A screening device for engineering construction according to claim 3, characterized in that: The swing mechanism (54) includes a servo motor (541) and a connecting rod (542). The servo motor (541) is fixedly installed on the front side of the U-shaped frame (1). The connecting rod (542) is movably hinged to the front side of the screening frame (52). The connecting rod (542) is arranged in a "T" shape. A turntable (543) is fixedly installed on the output shaft of the servo motor (541). A horizontally arranged sliding groove (544) is opened inside the connecting rod (542). A bolt (545) located in the sliding groove (544) is threaded on the bottom of the turntable (543). The bolt (545) is offset from the axis of the turntable (543).

5. A screening device for engineering construction according to claim 1, characterized in that: The drying assembly (6) includes two blower hoods (61) and a heating box (62). The two blower hoods (61) are fixedly installed on the upper left and right sides of the U-shaped frame (1). The heating box (62) is fixedly installed at the bottom of the U-shaped frame (1). The rear side of the heating box (62) is connected to an air extractor (63) fixedly installed at the bottom of the U-shaped frame (1). The rear side of the air extractor (63) is connected to an air supply pipe (64) that is connected to the two blower hoods (61). The inner side of the two blower hoods (61) is provided with an air outlet (65) facing the screening assembly (5).

6. A screening device for engineering construction according to claim 5, characterized in that: The heating box (62) is equipped with an electric heater inside, and an air inlet is provided on the front side of the heating box (62).

7. A screening device for engineering construction according to claim 1, characterized in that: The base (2) is rotatably mounted with a forward-inclined rotary screen (3), and the front side of the conveyor belt (4) is provided with a guide frame corresponding to the rotary screen (3).

Images