Stone particle size screening device for concrete processing

Abstract

The invention belongs to the technical field of screening devices, and discloses a stone particle size screening device for concrete processing, which comprises a base, the base is provided with a rotating mechanism and a base, the output end of the rotating mechanism is connected with a turntable, the turntable is provided with four guide rods, the turntable is provided with a conductive ring, the base is provided with a power supplier, and the power supplier is connected with the base. A plurality of screening mechanisms are installed on the rotary disc in a stacked mode, an electric jack is installed between every two adjacent screening mechanisms, and a vibration motor is installed on the base. A discharging mechanism is mounted on the side of the base, a mounting frame is mounted on the discharging mechanism, a baffle is mounted on the mounting frame, a receiving hopper is fixedly mounted on the side of the baffle, and a discharging pipe is connected to the output end of the receiving hopper. And the automatic dumping of the screened stones can be realized, the timed dumping can also be realized, the intelligence is high, and the sieve pores are not easy to block.

Description

Technical Field

[0001] The present invention belongs to the technical field of screening devices, and particularly relates to a stone particle size screening device for concrete processing. Background Art

[0002] As a core material in construction engineering, the performance of concrete directly depends on the particle size distribution and grading accuracy of the aggregate. According to the Standard for Quality and Inspection Methods of Sand and Stone for Ordinary Concrete (JGJ 52-2006), coarse aggregate (stone) needs to be classified and controlled in grades such as 5-20 mm and 20-40 mm, and the grading error needs to be less than 5% to meet the strength, density, and impermeability requirements of different grade concretes.

[0003] With the popularization of green buildings and precast concrete structures, the market demand for high-precision aggregates continues to grow. According to statistics, the annual consumption of aggregates in the concrete industry in China exceeded 20 billion tons in 2022, and about 30% of them need secondary processing due to unqualified screening, resulting in resource waste and cost increase.

[0004] During use, the applicant learned that users believe that the current screening device cannot automatically dump the screened stones after screening. As a result, after multiple screenings or long-term screenings, the sieve holes of the sieve bucket will be congested, and then the fluidity will become lower and lower, and the efficiency will become lower and lower, affecting the production and processing progress. Summary of the Invention

[0005] Aiming at the problems raised in the above background art, the purpose of the present invention is to provide a stone particle size screening device for concrete processing.

[0006] To achieve the above technical purpose, the technical solution adopted by the present invention is as follows:

[0007] A stone particle size screening device for concrete processing, including a base, the base is provided with a rotating mechanism and a base, the output end of the rotating mechanism is connected with a turntable, the turntable is provided with four guide rods, the turntable is provided with a slip ring, the base is provided with a power supply, the output end of the power supply is in contact with the slip ring, the power supply continuously supplies power to the slip ring, multiple screening mechanisms are stacked and installed on the turntable, an electric jack is installed between two adjacent screening mechanisms, the electric jack is electrically connected with the slip ring, the slip ring continuously supplies power to the electric jack, the base is provided with a vibration motor, and the output end of the vibration motor acts on the base;

[0008] The screening mechanism includes a lifting plate fixedly installed at the output end of the electric jack. The lifting plate is connected to an arc-shaped bracket, and a screening hopper is rotatably installed on the arc-shaped bracket. A sieve hole is provided at the inner bottom of the screening hopper. An engaging ring is integrally provided at the outer bottom of the screening hopper. The inner diameter of the inlet end of the screening hopper matches the outer diameter of the engaging ring. The guide rod passes through all the lifting plates;

[0009] A discharging mechanism is installed beside the base. The discharging mechanism is provided with a mounting frame, and a baffle is installed on the mounting frame. The number of baffles corresponds to that of the screening hoppers. The position of the baffle corresponds to the height position of the screening hopper after the electric jack extends. A receiving hopper is fixedly installed beside the baffle, and the output end of the receiving hopper is connected to a feeding pipe.

[0010] Further defined, the power of the rotating mechanism is a motor. A protective cylinder is installed outside the rotating mechanism. The turntable is lapped on the upper side of the protective cylinder. With such a design, the motor is a common power component, and it is easy to select different operating powers according to requirements. Its rotation speed can also be controlled, and it can be directly purchased for use. The protective cylinder can protect the motor and at the same time support the turntable, preventing gravity from directly acting on the output end of the motor.

[0011] Further defined, a rolling ball is installed at the lapping position between the protective cylinder and the turntable. With such a design, it can support the turntable and assist the turntable to rotate while playing a supporting effect.

[0012] Further defined, from high to low, the aperture sizes of the sieve holes on the screening hopper decrease in sequence. The screening hopper at the lowermost side has no sieve holes. With such a design, it decreases in sequence to achieve the screening purpose.

[0013] Further defined, four screening hoppers are evenly installed on one lifting plate. With such a design, the screening of four longitudinal groups of stones can be completed, improving the efficiency. At the same time, stones with four different screening specifications can be adjusted according to requirements, expanding the scope of use.

[0014] Further defined, a bearing is installed at the rotational connection between the screening hopper and the arc-shaped bracket. With such a design, the screening hopper has a better tilting rotation effect when finding its position under its own weight or being blocked.

[0015] Further defined, the inner bottom of the screening hopper is in the shape of an inverted truncated cone. With such a design, it is beneficial to the flow of stones.

[0016] Further defined, the baffle has an inclined surface. With such a design, it can guide the inclined movement of the screening hopper.

[0017] Further limitation: the baffle is provided with a notch, a top block is placed in the notch, a hydraulic cylinder is installed in the baffle, and the output end of the hydraulic cylinder is connected to the top block. With such a design, when the sieve hopper contacts the baffle, it can assist in pushing the tail of the sieve hopper upward, thereby achieving the purpose of assisting in dumping.

[0018] Further limitation: the inner bottom of the material receiving hopper is inclined towards the input end of the feeding pipe. With such a design, it can facilitate the movement of the feed under its own weight.

[0019] Advantages of adopting the present invention:

[0020] The present invention realizes full-automatic screening, saves labor costs, and improves screening efficiency;

[0021] The present invention can realize automatic dumping of the screened stones, and can also perform dumping at regular intervals, with high intelligence and not easy to block the sieve holes. Brief description of the drawings

[0022] The present invention can be further illustrated by the non-limiting embodiments given in the drawings;

[0023] Figure 1 It is a schematic structural diagram during screening of an embodiment of a device for screening the particle size of stones for concrete processing according to the present invention;

[0024] Figure 2 It is a schematic structural diagram during dumping of an embodiment of a device for screening the particle size of stones for concrete processing according to the present invention;

[0025] Figure 3 It is a schematic sectional structural diagram of an embodiment of a device for screening the particle size of stones for concrete processing according to the present invention;

[0026] Figure 4 It is a partial schematic structural diagram when the sieve hopper and the material receiving hopper are matched in an embodiment of a device for screening the particle size of stones for concrete processing according to the present invention;

[0027] Figure 5 It is a schematic sectional structural diagram when the sieve hopper and the material receiving hopper are matched in an embodiment of a device for screening the particle size of stones for concrete processing according to the present invention;

[0028] Figure 6 It is Figure 1 The enlarged structural diagram at A in

[0029] The main component symbols are explained as follows:

[0030] Base 1; Rotating mechanism 2; Base 3; Turntable 4; Guide rod 5; Conductive ring 6; Power supply 7; Screening mechanism 8; Electric jack 9; Vibration motor 10; Discharging mechanism 11;

[0031] Lifting plate 81; Arc-shaped bracket 82; Screening hopper 83; Screening holes 84; Fitting ring 85;

[0032] Mounting frame 111; Baffle 112; Material receiving hopper 113; Feeding pipe 114;

[0033] Protective cylinder 21; Notch 1121; Top block 1122; Hydraulic cylinder 1123. Specific implementation manner

[0034] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to the drawings and embodiments.

[0035] As Figures 1 to 6 shown, a device for screening the particle size of stones for concrete processing according to the present invention includes a base 1, a rotating mechanism 2 and a base 3 are installed on the base 1, the output end of the rotating mechanism 2 is connected to a turntable 4, four guide rods 5 are installed on the turntable 4, a conductive ring 6 is installed on the turntable 4, a power supply 7 is installed on the base 1, the output end of the power supply 7 is lapped with the conductive ring 6, the power supply 7 continuously supplies power to the conductive ring 6, a plurality of screening mechanisms 8 are stacked and installed on the turntable 4, an electric jack 9 is installed between two adjacent screening mechanisms 8, the electric jack 9 is electrically connected to the conductive ring 6, and the conductive ring 6 continuously supplies power to the electric jack 9, a vibration motor 10 is installed on the base 1, and the output end of the vibration motor 10 acts on the base 3;

[0036] The screening mechanism 8 includes a lifting plate 81 fixedly installed at the output end of the electric jack 9, the lifting plate 81 is connected with an arc-shaped bracket 82, a screening hopper 83 is rotatably installed on the arc-shaped bracket 82, screening holes 84 are provided at the inner bottom of the screening hopper 83, a fitting ring 85 is integrally provided at the outer bottom of the screening hopper 83, the inner diameter of the inlet end of the screening hopper 83 matches the outer diameter of the fitting ring 85, and the guide rods 5 penetrate through all the lifting plates 81;

[0037] A discharging mechanism 11 is installed beside the base 1, the discharging mechanism 11 is provided with a mounting frame 111, a baffle 112 is installed on the mounting frame 111, the number of the baffles 112 corresponds to that of the screening hoppers 83, the position of the baffle 112 corresponds to the height position of the screening hopper 83 after the electric jack 9 extends, a material receiving hopper 113 is fixedly installed beside the baffle 112, and the output end of the material receiving hopper 113 is connected with a feeding pipe 114.

[0038] Preferably, the power of the rotating mechanism 2 is a motor. A protective cylinder 21 is installed outside the rotating mechanism 2, and the turntable 4 is lapped on the upper side of the protective cylinder 21. With such a design, the motor is a common power component, and it is easy to select different operating powers according to requirements. Its rotation speed can also be controlled, and it can be directly purchased for use. While the protective cylinder 21 can protect the motor, it can also support the turntable 4, preventing gravity from directly acting on the output end of the motor. In fact, the power selection of the rotating mechanism 2 and corresponding protective measures can also be considered according to specific circumstances.

[0039] Preferably, rolling balls are installed at the lapping position between the protective cylinder 21 and the turntable 4. With such a design, it can support the turntable 4 while assisting its rotation. In fact, the structure that can assist in supporting without interfering with rotation can also be considered according to specific circumstances.

[0040] Preferably, from top to bottom, the aperture sizes of the sieve holes 84 on the sieve hopper 83 decrease in sequence, and the lowermost sieve hopper 83 has no sieve holes 84. With such a design, the sizes decrease in sequence to achieve the screening purpose. In fact, the specification sizes of the sieve holes 84 can also be considered according to specific circumstances.

[0041] Preferably, four sieve hoppers 83 are evenly installed on a lifting plate 81. With such a design, the screening of four longitudinal groups of stones can be completed, improving efficiency. At the same time, stones with four different screening specifications can be adjusted according to requirements, expanding the scope of use. In fact, the number of sieve hoppers 83 can also be considered according to specific circumstances.

[0042] Preferably, bearings are installed at the rotational connection between the sieve hopper 83 and the arc-shaped bracket 82. With such a design, the sieve hopper 83 has a better tilting rotation effect when positioning itself under its own weight or being blocked. In fact, the selection of bearings can also be considered according to specific circumstances.

[0043] Preferably, the inner bottom of the sieve hopper 83 is in the shape of an inverted frustum of a cone. With such a design, it is beneficial for the flow of stones. In fact, the size of the taper can also be considered according to specific circumstances.

[0044] Preferably, the baffle 112 has an inclined surface. With such a design, it can guide the inclined movement of the sieve hopper. In fact, the slope of the inclined surface can also be considered according to specific circumstances.

[0045] Preferably, the baffle 112 is provided with a notch 1121, a top block 1122 is placed in the notch 1121, and a hydraulic cylinder 1123 is installed in the baffle 112. The output end of the hydraulic cylinder 1123 is connected to the top block 1122. With such a design, when the sieve hopper 83 contacts the baffle 112, it can assist in pushing the tail of the sieve hopper 83 upward, thereby achieving the purpose of assisting in dumping. In fact, the structure for assisting the sieve hopper 83 to dump can also be considered according to specific circumstances.

[0046] Preferably, the inner bottom of the material receiving hopper 113 is inclined towards the input end of the material discharging pipe 114. Such a design can facilitate the movement of the feed under its own weight. In fact, the inclination angle and the structure of the inner bottom surface of the material receiving hopper 113 can also be considered according to specific circumstances.

[0047] In this embodiment, when using a stone particle size screening device for concrete processing, it is preferred to use a hoist for feeding. When feeding, two adjacent sieve hoppers 83 are in a closely connected state. The stone material enters from the inlet end of the uppermost sieve hopper 83. The vibration motor 10 operates to vibrate the base 3, and the sieve hopper 83 placed on its upper side is vibrated accordingly. The other sieve hoppers 83 closely connected to it also start to vibrate. Under this vibration, the stone material in the upper sieve hopper 83 falls into the lower sieve hopper 83 through its sieve holes 84, and so on, to achieve multiple screenings of the stone particle size. After the screening is completed or the screening reaches the set time, the screened stone material is started to be dumped.

[0048] The vibration motor 10 stops running, and the electric jack 9 runs to lift the lifting plate 81, that is, to increase the distance between two adjacent lifting plates 81. Preferably, the electric jack 9 starts running from top to bottom. That is, after the electric jack 9 at the uppermost side finishes running, the electric jack 9 at the immediately lower side starts running. Compared with all the electric jacks 9 running simultaneously, the stress is smaller, the use effect is better, the damage to the electric jack 9 is smaller, and the service life of the electric jack 9 is extended. It is strictly prohibited to start running from the electric jack 9 at the lower side. When all the electric jacks 9 finish running, the distance between two adjacent lifting plates 81 reaches the maximum, and the mating ring 85 completely disengages from the open end of the sieve hopper 83 and remains in this state. Then the rotating mechanism 2 starts running to drive the turntable 4 to rotate. It should be noted here that the power supply unit 7 supplies power in a way of lapping on the slip ring 6. Therefore, the rotation of the turntable 4 will not affect the power supply to the electric jack 9. However, it is preferred that the position of the slip ring 6 is insulated to prevent electric shock. When the turntable 4 rotates, under the effect of the guide rod 5, all the upper lifting plates 81 are driven to rotate. Then the sieve hopper 83 connected by the arc-shaped bracket 82 starts to rotate around the output shaft of the rotating mechanism 2. When the sieve hopper 83 rotates and touches the baffle 112, due to the rotating force, the sieve hopper 83 continues to move. But because of the obstruction of the baffle 112, the sieve hopper 83 will tilt. And the tilting of the sieve hopper 83 causes the internal stones to pour into the receiving hopper 113 and flow out through the discharge pipe 114 to enter the next process. After the stones inside the sieve hopper 83 are poured out due to tilting, the continuous movement of the sieve hopper 83 makes the sieve hopper 83 move away from the receiving hopper 113. Under the self-weight of the sieve hopper 83, the angle of the sieve hopper 83 returns until the sieve hopper 83 rotates to directly above the base 3 and then stops rotating. Then the electric jack 9 starts running to make the distance between two adjacent lifting plates 81 become the shortest. The vibration motor 10 runs, and the screening of the next batch of stones can start;

[0049] For further optimization, when the sieve hopper 83 is tilted, the rotating mechanism 2 is controlled to stop rotating, so that the sieve hopper 83 maintains an angle for a period of time to ensure that the internal stones are completely poured out. At the same time, the hydraulic cylinder 1123 can be controlled to run to push the top block 1122 to impact the sieve hopper 83 or make the slope of the sieve hopper 83 steeper to ensure the complete pouring of the stones inside the sieve hopper 83;

[0050] Furthermore, multiple sieve hoppers 83 can be evenly installed on the same lifting plate 81, so that the simultaneous screening of multiple groups of stones can be realized. Moreover, the particle sizes of the sieve holes 84 of each group of sieve hoppers 83 can be different, so as to achieve a more multi-level screening effect.

[0051] The above embodiments are only used to exemplarily illustrate the principles and effects of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A stone particle size screening device for concrete processing, comprising a base (1), characterized in that: The base (1) is provided with a rotating mechanism (2) and a base (3); the output end of the rotating mechanism (2) is connected to a turntable (4); the turntable (4) is provided with four guide rods (5); the turntable (4) is provided with a conductive ring (6); the base (1) is provided with a power supply (7); the output end of the power supply (7) is overlapped with the conductive ring (6); the power supply (7) continuously supplies power to the conductive ring (6); a plurality of screening mechanisms (8) are stacked on the turntable (4); an electric jack (9) is provided between two adjacent screening mechanisms (8); the electric jack (9) is electrically connected to the conductive ring (6); the conductive ring (6) continuously supplies power to the electric jack (9); the base (1) is provided with a vibration motor (10); the output end of the vibration motor (10) acts on the base (3); The screening mechanism (8) comprises a lifting plate (81) fixedly mounted on the output end of the electric jack (9), the lifting plate (81) being connected to an arc-shaped bracket (82), a screening bucket (83) being rotatably mounted on the arc-shaped bracket (82), a screening hole (84) being provided at the inner bottom of the screening bucket (83), a matching ring (85) being integrally provided at the outer bottom of the screening bucket (83), the inner diameter of the inlet end of the screening bucket (83) matching the outer diameter of the matching ring (85), and the guide rod (5) passing through all the lifting plates (81); A discharge mechanism (11) is installed on the side of the base (1), and a mounting frame (111) is installed on the discharge mechanism (11), and a baffle (112) is installed on the mounting frame (111). The number of the baffles (112) corresponds to the sieve bucket (83), and the position of the baffles (112) corresponds to the height position of the sieve bucket (83) after the electric jack (9) is extended. A receiving hopper (113) is fixedly installed on the side of the baffle (112), and a discharge pipe (114) is connected to the output end of the receiving hopper (113).

2. The stone particle size screening device for concrete processing according to claim 1, characterized in that: The power of the rotating mechanism (2) is a motor, a protective tube (21) is installed outside the rotating mechanism (2), and the rotating disk (4) is overlapped on the upper side of the protective tube (21).

3. The stone particle size screening device for concrete processing according to claim 2 is characterized in that: A rolling ball is installed at the overlapping position between the protective tube (21) and the rotating disk (4).

4. The stone particle size screening device for concrete processing according to claim 1, characterized in that: From high to low, the aperture sizes of the sieve holes (84) on the sieve buckets (83) decrease successively, and the sieve bucket (83) located at the lowest side has no sieve holes (84).

5. The stone particle size screening device for concrete processing according to claim 1, characterized in that: One lifting plate (81) is evenly mounted with four screening buckets (83).

6. The stone particle size screening device for concrete processing according to claim 1, characterized in that: A bearing is installed at the rotation connection between the sieve bucket (83) and the arc-shaped bracket (82).

7. The stone particle size screening device for concrete processing according to claim 1, characterized in that: The inner bottom of the sieve bucket (83) is in the shape of an inverted frustum.

8. The stone particle size screening device for concrete processing according to claim 1, characterized in that: The baffle (112) has an inclined surface.

9. The stone particle size screening device for concrete processing according to claim 1, characterized in that: The baffle plate (112) is provided with a notch (1121), a top block (1122) is placed in the notch (1121), a hydraulic cylinder (1123) is installed in the baffle plate (112), and an output end of the hydraulic cylinder (1123) is connected to the top block (1122).

10. The stone particle size screening device for concrete processing according to claim 1, characterized in that: The inner bottom of the receiving hopper (113) is inclined toward the input end of the discharge pipe (114).

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