Sand screening machine for constructional engineering

Abstract

The utility model relates to the technical field of sand screening machines for constructional engineering, and discloses a sand screening machine for constructional engineering, which comprises a base, the upper surface of the base is fixedly connected with a feed port, the upper surface of the base is fixedly connected with a discharge port, the upper surface of the base is fixedly connected with a self-locking air spring, and the upper surface of the base is fixedly connected with a sand discharging port. The upper end of the self-locking air spring is fixedly connected with a sand blocking shell, the inner wall of the sand blocking shell is rotatably connected with a rotating wheel, the lower end of the side wall of the sand blocking shell is fixedly connected with an arc-shaped guide rail, the outer surface of the arc-shaped guide rail is slidably connected with a rotating shaft, an arc-shaped groove is formed in the rotating shaft, and a sand screening assembly is arranged in the sand blocking shell. According to the sand screening machine for constructional engineering, the reciprocating lead screw rotates through the motor, so that the screen moves in a reciprocating mode, the purpose that materials in the screen are shaken to screen sand is achieved, the sand screening machine can screen sand on stones attached with fine sand, and the sand screening efficiency of the sand screening machine is improved.

Description

Technical Field

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

[0002] Sand screening machine, also known as dry land sand screening ship and sand and gravel separator, is a kind of sand mining machinery that uses screening equipment to separate coarse and fine materials. It is also a sand and gravel separation equipment suitable for rivers, reservoirs, and coal yards. It is generally divided into drum sand screening machine, water-washed drum sand screening machine, vibrating screen sand screening machine, etc.

[0003] According to a publicly disclosed sand screening machine for construction projects (publication number: CN217963525U), in the above application, the second rotating shaft and the cam are driven to rotate by the second motor, so that the screening mechanism vibrates vertically back and forth, and the inclined first screen plate and the second screen plate are used to facilitate the discharge of the screened yellow sand to the outside of the screening box under the action of gravity and vertical vibration force. The first screen plate facilitates the screening of large particles of yellow sand, and the second screen plate facilitates the screening of medium-sized particles of yellow sand, thereby realizing multi-stage screening of yellow sand and improving screening efficiency.

[0004] However, in actual use, the above equipment only relies on gravity to separate fine sand and stones, and the stones in the excavated materials are often attached to the fine sand. When encountering stones that are closely attached to the fine sand, the above equipment is difficult to separate the fine sand attached to the stones from the stones, which reduces the efficiency of sand screening. In view of this, we propose a sand screening machine for construction projects. Utility Model Content

[0005] The purpose of the utility model is to provide a sand screening machine for construction engineering to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sand screening machine for construction engineering, comprising a base, a feeding port is fixedly connected to the upper surface of the base, a discharging port is fixedly connected to the upper surface of the base, a self-locking gas spring is fixedly connected to the upper surface of the base, a sand retaining shell is fixedly connected to the upper end of the self-locking gas spring, a rotating wheel is rotatably connected to the inner wall of the sand retaining shell, an arc-shaped guide rail is fixedly connected to the lower end of the side wall of the sand retaining shell, a rotating shaft is slidably connected to the outer surface of the arc-shaped guide rail, an arc-shaped groove is provided on the rotating shaft, a sand screening assembly is arranged inside the sand retaining shell, and the sand screening assembly comprises:

[0007] The motor, the outer wall of the sand retaining shell is fixedly connected to the motor, the output end of the motor passes through the outer wall of the sand retaining shell and is fixedly connected to a reciprocating screw rod, the grooved outer surface of the reciprocating screw rod is threadedly connected to a sliding seat, the outer wall of the sliding seat is fixedly connected to a transmission rod, the end of the transmission rod away from the sliding seat is fixedly connected to a screen, the outer wall of the screen is fixedly connected to a sliding plate, a gear is sleeved on the arcuate outer surface of the transmission rod, the plane end of the gear away from the screen is fixedly connected to a torsion spring, the lower surface of the gear is meshed with a rack, the end of the gear close to the screen is fixedly connected to a folding plate, the end of the folding plate away from the gear is fixedly connected to a spring telescopic block, the telescopic end of the spring telescopic block is hinged with a connecting plate, and both ends of the connecting plate are rotatably connected to a sweeping wheel.

[0008] Preferably, the inclined surface of the discharge port is close to the self-locking gas spring, one end of the feed port is close to the screen, the rotating shaft is fixedly connected to the upper surface of the base, and the radius and width of the arc groove are consistent with the radius and width of the arc guide rail. When the self-locking gas spring is lifted, the sand retaining shell rotates around the rotating shaft, thereby tilting the screen.

[0009] Preferably, one end of the torsion spring away from the gear is fixedly connected to the outer wall of the transmission rod, and both ends of the rack are provided with teeth meshing with the gear, and the number of the two groups of teeth is less than one-fourth of the number of teeth on the gear. When the transmission rod moves to both ends of the rack, the gear meshes with the rack to cause the gear to rotate, and when the transmission rod leaves both ends of the rack, the torsion spring resets the folding plate.

[0010] Preferably, openings are provided on both sides of the sand retaining shell, and the number of the rotating wheels is set to four groups, with two groups of the four groups of rotating wheels forming a pair, a pair of the rotating wheels are mirror-distributed at the upper and lower ends of the inner wall of the sand retaining shell opening, and the distance between the pair of rotating wheels is consistent with the thickness of the sliding plate, the sliding plate passes through the opening of the sand retaining shell, and the upper and lower ends of the sliding plate are respectively in contact with a pair of rotating wheels, so that the screen is limited in the direction of movement when it moves back and forth.

[0011] Preferably, the width of the discharge port is greater than the width of the screen, so that the discharge port can better receive the sieved fine sand when the screen reciprocates, and the width of the feed port is less than the width of the screen, so that the feed port can better deliver the material into the reciprocating screen when feeding.

[0012] Preferably, the rack is fixedly connected to the inner wall of the sand retaining shell, and the cleaning wheel is in contact with the inner wall of the sand retaining shell, so that the cleaning wheel can clean the inner wall of the sand retaining shell more comprehensively.

[0013] Compared with the prior art, the utility model provides a sand screening machine for construction engineering, which has the following

[0014] Beneficial effects:

[0015] 1. The sand screening machine for construction projects uses a motor to rotate the reciprocating screw rod, thereby making the screen move back and forth, so as to achieve the purpose of shaking the material in the screen to screen the sand. The sliding plates at both ends of the screen slide in the opening of the sand retaining shell, which can limit the movement direction of the screen to prevent the material from spilling. At the same time, the rollers at both ends of the sliding plate can reduce the friction of the sliding plate during movement, so that the screen can be shaken better, so that the sand screening machine can screen stones with fine sand attached, thereby improving the sand screening efficiency of the sand screening machine.

[0016] 2. The sand screening machine for construction projects uses the gears arranged on the transmission rod and the toothed racks at both ends to make the screen move and drive the folding plate to swing, so that the cleaning wheel rolls on the inner wall of the sand retaining shell, and the fine sand scattered on the sand retaining shell when the screen is shaken to screen the sand is swept off. At the same time, the spring telescopic rod makes the cleaning wheel fit more tightly to the inner wall of the sand retaining shell. At this time, the connecting plate hinged with the telescopic rod enables the cleaning wheel to turn when the folding plate swings, so that it fits more tightly to the inner wall of the sand retaining shell, thereby improving the effect of cleaning the fine sand, thereby improving the sand screening efficiency of the sand screening machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the upper end cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the sand screening component of the utility model;

[0020] Figure 4 This is a schematic diagram of the sand retaining shell structure of the utility model.

[0021] In the figure: 1. base; 2. feed port; 3. discharge port; 4. self-locking gas spring; 5. sand retaining shell; 6. rotating wheel; 7. arc guide rail; 8. rotating shaft; 9. arc groove; 10. sand screening assembly; 101. motor; 102. reciprocating screw rod; 103. slide seat; 104. transmission rod; 105. screen; 106. sliding plate; 107. gear; 108. torsion spring; 109. rack; 1010. folding plate; 1011. spring telescopic block; 1012. cleaning wheel; 1013. connecting plate. DETAILED DESCRIPTION

[0022] like Figure 1-Figure 4As shown, the utility model provides a technical solution: a sand screening machine for construction engineering, comprising a base 1, a feeding port 2 is fixedly connected to the upper surface of the base 1, a discharging port 3 is fixedly connected to the upper surface of the base 1, a self-locking gas spring 4 is fixedly connected to the upper surface of the base 1, a sand retaining shell 5 is fixedly connected to the upper end of the self-locking gas spring 4, an inner wall of the sand retaining shell 5 is rotatably connected to a rotating wheel 6, an arc guide rail 7 is fixedly connected to the lower end of the side wall of the sand retaining shell 5, a rotating shaft 8 is slidably connected to the outer surface of the arc guide rail 7, an arc groove 9 is provided on the rotating shaft 8, a sand screening assembly 10 is arranged inside the sand retaining shell 5, and the sand screening assembly 10 comprises a motor 101, a reciprocating screw rod 102, a slide seat 103, a transmission rod 104, a screen 105, a sliding plate 106, a gear 107, a torsion spring 108, a rack 109, a folding plate 1010, a spring telescopic block 1011, a cleaning wheel 1012, and a connecting plate 1013.

[0023] In one embodiment of the utility model, the outer wall of the sand retaining shell 5 is fixedly connected to a motor 101, the output end of the motor 101 penetrates the outer wall of the sand retaining shell 5 and is fixedly connected to a reciprocating screw rod 102, the slotted outer surface of the reciprocating screw rod 102 is threadedly connected to a slide seat 103, the outer wall of the slide seat 103 is fixedly connected to a transmission rod 104, the end of the transmission rod 104 away from the slide seat 103 is fixedly connected to a screen 105, the outer wall of the screen 105 is fixedly connected to a sliding plate 106, and the arc of the transmission rod 104 A gear 107 is sleeved on the outer surface, and a torsion spring 108 is fixedly connected to the plane end of the gear 107 away from the screen 105, a rack 109 is meshed on the lower surface of the gear 107, and a folding plate 1010 is fixedly connected to the end of the gear 107 close to the screen 105, and a spring telescopic block 1011 is fixedly connected to the end of the folding plate 1010 away from the gear 107, and the telescopic end of the spring telescopic block 1011 is hinged with a connecting plate 1013, and both ends of the connecting plate 1013 are rotatably connected to cleaning wheels 1012.

[0024] In addition, the inclined surface of the discharge port 3 is close to the self-locking gas spring 4, one end of the feed port 2 is close to the screen 105, the rotating shaft 8 is fixedly connected to the upper surface of the base 1, and the radius and width of the arc groove 9 are consistent with the radius and width of the arc guide rail 7. When the self-locking gas spring 4 is lifted, the sand retaining shell 5 rotates around the rotating shaft 8, thereby tilting the screen 105. The tilt of the screen 105 can pour the remaining stones after screening the sand from the screen 105 into the discharge port 3, which is convenient for the next use.

[0025] In an embodiment of the present utility model, one end of the torsion spring 108 away from the gear 107 is fixedly connected to the outer wall of the transmission rod 104, and teeth meshing with the gear 107 are provided at both ends of the rack 109, and the number of the two sets of teeth is less than one-fourth of the number of teeth of the gear 107. When the transmission rod 104 moves to the two ends of the rack 109, the gear 107 meshes with the rack 109 to rotate the gear 107. When the transmission rod 104 leaves the two ends of the rack 109, the torsion spring 108 resets the folding plate 1010, and the rotation of the gear 107 drives the cleaning wheel 1012 to clean the inner walls on both sides of the sand retaining shell 5. When the gear 107 is reset, the cleaning wheel 1012 remains vertical, thereby cleaning the upper inner wall of the sand retaining shell 5, so that the cleaning wheel 1012 can clean the fine sand on the sand retaining shell 5 more comprehensively.

[0026] In the embodiment of the utility model, openings are provided on both sides of the sand retaining shell 5, and the number of rotating wheels 6 is set to four groups, and the four groups of rotating wheels 6 are divided into two groups as a pair, and a pair of rotating wheels 6 are mirror-distributed at the upper and lower ends of the inner wall of the opening of the sand retaining shell 5, and the distance between the pair of rotating wheels 6 is consistent with the thickness of the sliding plate 106, and the sliding plate 106 passes through the opening of the sand retaining shell 5, and the upper and lower ends of the sliding plate 106 are respectively in contact with a pair of rotating wheels 6, so that when the screen 105 moves back and forth, the moving direction is limited to prevent the screen 105 from vibrating up and down and causing the material to fly out. At the same time, the rotating wheel 6 can reduce the friction when the sliding plate 106 slides, so that the screen 105 can screen sand better.

[0027] In an embodiment of the utility model, the width of the discharge port 3 is greater than the width of the screen 105, so that the discharge port 3 can better receive the screened fine sand when the screen 105 reciprocates. The width of the feed port 2 is less than the width of the screen 105, so that the feed port 2 can better feed the material into the reciprocating screen 105 when feeding, which can prevent the material from falling out and the fine sand from spilling, thereby improving the sand screening efficiency of the sand screening machine.

[0028] In the embodiment of the utility model, the rack 109 is fixedly connected to the inner wall of the sand retaining shell 5, and the cleaning wheel 1012 contacts the inner wall of the sand retaining shell 5, so that the cleaning wheel 1012 can clean the inner wall of the sand retaining shell 5 more comprehensively.

[0029] In the present invention, when in use, the material is fed into the screen 105 through the feeding port 2, and then the motor 101 is started, the motor 101 rotates the reciprocating screw rod 102, and the reciprocating screw rod 102 rotates to make the slide seat 103 threaded therewith reciprocate, and the slide seat 103 makes the screen 105 reciprocate through the transmission rod 104 to achieve a shaking effect, and at the same time, the sliding plates 106 at both ends of the screen 105 slide in the opening of the sand retaining shell 5, which can limit the shaking direction, so that the screen 105 will not shake up and down to cause material overflow, and at the same time, the running wheels 6 at both ends of the sliding plate 106 can reduce the friction when the sliding plate 106 slides, so that the shaking effect of the screen 105 is better, thereby making the sand screening efficiency of the sand screening machine higher, and when the slide seat 103 drives the transmission rod 104 to move, the transmission rod 104 The gear 107 sleeved on the upper side moves accordingly, and the movement of the gear 107 drives the folding plate 1010 to move, so that the cleaning wheel 1012 moves to clean the upper inner wall of the sand retaining shell 5. The spring expansion block 1011 fixedly connected to the folding plate 1010 can make the cleaning wheel 1012 fit more tightly with the inner wall of the sand retaining shell 5. When the transmission rod 104 moves to the two ends of the rack 109, the teeth at the two ends of the rack 109 rotate the gear 107, thereby rotating the cleaning wheel 1012. When the cleaning wheel 1012 rotates to the folding angle of the inner wall of the sand retaining shell 5, the cleaning wheel 1012 is turned through the connecting plate 1013 hinged with the spring expansion block 1011, so that the inner wall of the sand retaining shell 5 can be better cleaned, thereby sweeping off the fine sand on the inner wall of the sand retaining shell 5, and making the sand screening effect of the sand screening machine better.

[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A sand screening machine for construction engineering, comprising a base (1), a feeding port (2) fixedly connected to the upper surface of the base (1), a discharging port (3) fixedly connected to the upper surface of the base (1), a self-locking gas spring (4) fixedly connected to the upper surface of the base (1), a sand retaining shell (5) fixedly connected to the upper end of the self-locking gas spring (4), an inner wall of the sand retaining shell (5) rotatably connected to a rotating wheel (6), a lower end of a side wall of the sand retaining shell (5) fixedly connected to an arc guide rail (7), a rotating shaft (8) slidably connected to the outer surface of the arc guide rail (7), and an arc groove (9) provided on the rotating shaft (8), characterized in that: A sand screening component (10) is arranged inside the sand retaining shell (5), and the sand screening component (10) comprises: The motor (101) is fixedly connected to the outer wall of the sand retaining shell (5), the output end of the motor (101) penetrates the outer wall of the sand retaining shell (5) and is fixedly connected to a reciprocating screw rod (102), the grooved outer surface of the reciprocating screw rod (102) is threadedly connected to a sliding seat (103), the outer wall of the sliding seat (103) is fixedly connected to a transmission rod (104), one end of the transmission rod (104) away from the sliding seat (103) is fixedly connected to a screen (105), the outer wall of the screen (105) is fixedly connected to a sliding plate (106), and the arc-shaped outer surface of the transmission rod (104) A gear (107) is sleeved on the upper surface, the plane end of the gear (107) away from the screen (105) is fixedly connected to a torsion spring (108), the lower surface of the gear (107) is meshed with a rack (109), the end of the gear (107) close to the screen (105) is fixedly connected to a folding plate (1010), the end of the folding plate (1010) away from the gear (107) is fixedly connected to a spring telescopic block (1011), the telescopic end of the spring telescopic block (1011) is hinged to a connecting plate (1013), and both ends of the connecting plate (1013) are rotatably connected to cleaning wheels (1012).

2. A sand screening machine for construction engineering according to claim 1, characterized in that: The inclined surface of the discharge port (3) is close to the self-locking gas spring (4), one end of the feed port (2) is close to the screen (105), the rotating shaft (8) is fixedly connected to the upper surface of the base (1), and the radius and width of the arc groove (9) are consistent with the radius and width of the arc guide rail (7).

3. A sand screening machine for construction engineering according to claim 1, characterized in that: One end of the torsion spring (108) away from the gear (107) is fixedly connected to the outer wall of the transmission rod (104), and both ends of the rack (109) are provided with teeth meshing with the gear (107), and the number of the two groups of teeth is less than one quarter of the number of teeth of the gear (107).

4. A sand screening machine for construction engineering according to claim 1, characterized in that: Both sides of the sand retaining shell (5) are provided with openings. The number of the rotating wheels (6) is set to four groups, and two groups of the four groups of rotating wheels (6) form a pair. The pair of rotating wheels (6) are mirror-distributed at the upper and lower ends of the inner wall of the opening of the sand retaining shell (5), and the distance between the pair of rotating wheels (6) is consistent with the thickness of the sliding plate (106). The sliding plate (106) passes through the opening of the sand retaining shell (5), and the upper and lower ends of the sliding plate (106) are respectively in contact with the pair of rotating wheels (6).

5. A sand screening machine for construction engineering according to claim 1, characterized in that: The width of the discharge port (3) is greater than the width of the screen (105), and the width of the feed port (2) is less than the width of the screen (105).

6. A sand screening machine for construction engineering according to claim 1, characterized in that: The rack (109) is fixedly connected to the inner wall of the sand retaining shell (5), and the cleaning wheel (1012) is in contact with the inner wall of the sand retaining shell (5).

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