Concrete machine-made sand grain type screening auxiliary device

Abstract

The utility model belongs to the technical field of screening, and particularly relates to a concrete machine-made sand grain type screening auxiliary device which comprises a machine frame and a screening barrel, the screening barrel is arranged on the machine frame in a rotating and sealing mode, the machine frame is further provided with a transmission assembly connected with the screening barrel, and an auxiliary mechanism is arranged in the screening barrel. The rack comprises supporting frames and a mounting frame, the two supporting frames are rotationally connected with the two ends of the screening barrel in a sealed mode respectively, the mounting frame coincides with the axis of the screening barrel and is connected with the two supporting frames, and the multiple auxiliary mechanisms are evenly distributed on the mounting frame. According to the sand screening device, more sand grains can be screened more effectively when the sand grains are screened, on one hand, the situation that screening is insufficient due to the fact that more sand grains are wrapped is avoided, on the other hand, the sand grains with the single grain size can be screened in a targeted mode through a blocking mode, and meanwhile continuous screening can be conducted in the corresponding separated space; and the screening effect is better.

Description

A concrete manufactured sand granular screening auxiliary device Technical Field

[0001] This utility model belongs to the field of screening technology, specifically relating to an auxiliary device for screening concrete manufactured sand particles. Background Technology

[0002] Manufactured sand refers to sand processed by sand making machines and other auxiliary equipment. To ensure that the particle shape of the manufactured sand meets the requirements, the sand particles used for sand making are screened during the production process. Only sand particles that meet the requirements are fed into the sand making machine, while the rest that do not meet the particle size requirements are crushed or separated. Currently, when general screening devices are used for screening, because the number of sand particles fed into the screening device at one time is large, the sand particles in the entrained state are prone to not being able to pass through the screening device and are directly discharged directly, resulting in poor screening efficiency and effect. Often, multiple screenings are required for a single batch of sand particles to achieve complete separation, which affects the overall production efficiency and increases production energy consumption. Summary of the Invention

[0003] The purpose of this invention is to provide an auxiliary device for screening concrete manufactured sand particles, in order to solve the problems mentioned in the background art.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0005] It includes a frame and a screening drum, the screening drum being rotatably and sealed on the frame, the frame also having a transmission assembly connected to the screening drum, and an auxiliary mechanism inside the screening drum;

[0006] The frame includes a support frame and a mounting frame. There are two support frames, which are rotatably and sealed to both ends of the screening barrel. The mounting frame is aligned with the axis of the screening barrel and connected to the two support frames. There are several auxiliary mechanisms, which are evenly distributed on the mounting frame.

[0007] The auxiliary mechanism includes a baffle plate, a connector, a connecting seat, and a rotator. The connecting seat is connected to the mounting frame. The baffle plate has a fan-shaped structure that fits and matches the inner wall of the screening barrel. The connector is connected to the non-arc edge of the baffle plate and is rotatably connected to the connecting seat. The rotator is located on the connecting seat and is matched with the drive mechanism of the connector.

[0008] Furthermore, the rotator includes a first motor, a worm gear, and a worm wheel. The first motor is connected to the mounting bracket via a bracket. The worm gear is concentrically connected to the output shaft of the motor. The worm wheel is rotatably located on the side of the connecting seat and is concentrically connected to the axis of the connecting head. The worm gear and the worm wheel are meshed together.

[0009] Furthermore, the screen aperture of the screening barrel gradually increases from the feeding side to the discharging side, and the screen apertures of the screening barrel are opened in sections according to the auxiliary mechanisms arranged at intervals. The screen apertures in the same area have the same aperture and correspond to the interval space formed by adjacent auxiliary mechanisms.

[0010] Furthermore, the transmission assembly includes a second motor, a transmission wheel, a driven ring, and a transmission belt. The second motor is fixedly mounted on a support frame on one side. The transmission wheel is concentrically connected to the output shaft of the motor. The driven ring is located in the area of ​​the screening barrel where no screen holes are opened. The transmission belt is wound between the transmission wheel and the driven ring.

[0011] This application has at least the following advantages compared to the prior art:

[0012] With the rotatable screening drum and multiple auxiliary mechanisms, it is possible to screen a larger number of sand particles more effectively. On the one hand, it avoids the situation of insufficient screening due to the inclusion of too many sand particles. On the other hand, the blocking mechanism can target the screening of sand particles of a single size. At the same time, it can also perform continuous screening in the corresponding partition space, resulting in better screening effect. Attached Figure Description

[0013] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0014] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 is a cross-sectional view of the structure of this utility model.

[0016] Figure 3 is a schematic diagram of the auxiliary mechanism of this utility model.

[0017] Figure 4 is an enlarged view of point A in Figure 3.

[0018] Screening barrel 1, screen hole 11, support frame 12, mounting frame 13, baffle plate 2, connector 21, connecting seat 22, first motor 3, worm 31, worm wheel 32, second motor 4, transmission wheel 41, driven ring 42, transmission belt 43. Detailed Implementation

[0019] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] As shown in Figures 1-4, a concrete machine sand granular screening auxiliary device includes a frame and a screening barrel 1. The screening barrel 1 is rotatably sealed on the frame. The frame is also provided with a transmission component connected to the screening barrel 1. An auxiliary mechanism is provided inside the screening barrel 1.

[0021] The frame includes a support frame 12 and a mounting frame 13. There are two support frames 12, which are rotatably and sealed to both ends of the screening barrel 1. The mounting frame 13 is aligned with the axis of the screening barrel 1 and connected to the two support frames 12. There are several auxiliary mechanisms, which are evenly distributed on the mounting frame 13.

[0022] The auxiliary mechanism includes a baffle plate 2, a connector 21, a connecting seat 22, and a rotator. The connecting seat 22 is connected to the mounting frame 13. The baffle plate 2 has a fan-shaped structure that fits and matches the inner wall of the screening barrel 1. The connector 21 is connected to the non-arc edge of the baffle plate 2 and is rotatably connected to the connecting seat 22. The rotator is located on the connecting seat 22 and is matched with the connecting head 21 for transmission.

[0023] In this application, the screening barrel 1 is set at an angle, which helps the sand particles to be screened to roll automatically from high to low under their own gravity. During screening, the sand particles are put into the side of the screening barrel 1 with a higher horizontal height. At this time, the sand particles gradually fall and roll from high to low. Under the screening action of the screening barrel 1, the sand particles with the corresponding aperture size are screened out and fall, and are transported by an external collection container or conveying device. The remaining sand particles with non-corresponding aperture size are discharged from the opening on the other side of the screening barrel 1, thereby achieving the effect of screening the sand particle shape.

[0024] During the screening process, due to the large number of sand particles input at one time, some sand particles that need to be screened may not be effectively screened out due to the entrainment effect of the large number of sand particles. Instead, they may be discharged with sand particles of non-specified size, resulting in poor screening effect. Therefore, in this application, when a single batch of sand particles is put into the screening barrel 1, the baffle plate 2 will block the falling and rolling sand particles, so that the sand particles are temporarily stored in the area of ​​the baffle plate 2. With the continuous movement of the screening barrel 1 driven by the transmission component, it can more effectively screen the accumulated sand particles, especially when dealing with a large number of sand particles and when some areas of the screening barrel 1 are blocked, resulting in a slight decrease in screening effect.

[0025] After a single batch of sand particles has been screened, the rotating device can be started to drive the connector 21 to rotate and flip the baffle plate 2. The baffle plate 2 flips away from the feed inlet, which avoids the baffle plate 2 from blocking the sand particles and ensures effective feeding. When the sand particles enter the next auxiliary mechanism area or are discharged, they can be reset. This can ensure the continuity of screening to a certain extent. The cooperation of multiple auxiliary mechanisms avoids the problem of long waiting time caused by a single auxiliary mechanism blocking the screening. It is worth noting that in this application, the rotating device can be directly controlled by a power switch or by an industrial computer or other device with electrical logic control. In this application, the rotating device only provides forward and reverse rotation power to satisfy the flipping of the baffle plate 2. Therefore, the rotating device in this application is only an implementation method that can be selected by those skilled in the art.

[0026] The baffle plate mentioned in this application is essentially a sector-shaped plate concentric with the screening barrel on the vertical cross-section, and its area is less than half the area of ​​the vertical cross-section of the screening barrel. This allows it to block sand particles in the screening to the greatest extent without affecting the rotation of the screening barrel itself.

[0027] The rotating device includes a first motor 3, a worm 31 and a worm wheel 32. The first motor 3 is connected to the mounting bracket 13 via a bracket. The worm 31 is concentrically connected to the output shaft of the motor. The worm wheel 32 is rotatably located on the side of the connecting seat 22 and is concentrically connected to the axis of the connecting head 21. The worm 31 and the worm wheel 32 are meshed together.

[0028] When the connecting head 21 is driven by the rotary actuator to rotate or reset the baffle plate 2, the first motor 3 starts and drives the worm 31 to rotate. The rotation direction of the output shaft of the first motor 3 drives the worm 31 to rotate forward or backward, thereby generating a corresponding directional drive for the worm wheel 32 meshing with the worm 31. Since the worm wheel 32 is concentrically connected to the shaft of the connecting head 21, the rotation of the worm wheel 32 will synchronously act on the connecting head 21, causing the baffle plate 2 to rotate accordingly, thus fulfilling the need for blocking or releasing material. The worm 31 and... The transmission mechanism of the worm gear 32 has a good self-locking function. Therefore, when facing the pushing force of sand particles on the baffle plate 2, it can improve the blocking effect and stability of the baffle plate 2. Furthermore, since there may be flying sand and dust inside the screening barrel 1 during screening, in order to avoid the sand and dust or water spraying during dust suppression affecting the normal meshing transmission of the worm 31 and the worm gear 32, a corresponding protective cover can be set at the transmission device (not shown in the schematic diagram of this application to show the internal structure) to protect the vulnerable parts.

[0029] The screen holes 11 of the screening barrel 1 gradually increase in diameter from the feeding side to the discharging side. The screen holes 11 of the screening barrel 1 are opened in the auxiliary mechanism according to the interval distribution. The screen holes 11 in the same area have the same diameter and correspond to the interval space formed by adjacent auxiliary mechanisms.

[0030] The screen aperture 11, which gradually increases from the feed side to the discharge side, is more suitable for screening multi-particle sand and can perform multi-stage screening in order of increasing size, thus better meeting the screening needs.

[0031] The transmission assembly includes a second motor 4, a transmission wheel 41, a driven ring 42, and a transmission belt 43. The second motor 4 is fixedly mounted on a support frame 12 on one side. The transmission wheel 41 is concentrically connected to the output shaft of the motor. The driven ring 42 is located in the area of ​​the screening barrel 1 where the screen holes 11 are not opened. The transmission belt 43 is wound between the transmission wheel 41 and the driven ring 42.

[0032] When the screening barrel 1 rotates for screening, the second motor 4 starts, and its output shaft drives the transmission wheel 41 to rotate. The transmission wheel 41 drives the driven ring 42 through the transmission belt 43, thereby driving the entire screening barrel 1 to rotate on the support frame 12. During rotation, the screen holes 11 on the side of the screening barrel 1 keep switching positions in real time. On the one hand, the rotating screening barrel 1 can move the sand particles inside, improving the screening effect. On the other hand, the real-time switching of the screen hole 11 area can reduce the reduction in screening efficiency caused by the blockage of some screen holes 11. At the same time, the exposed screening barrel 1 can be directly cleaned by knocking on the outside or by using other devices, reducing the impact of blockage on screening efficiency. The control method of the second motor 4 in this application can be directly controlled by a circuit switch or controlled by the aforementioned industrial computer or other control devices. At the same time, this application only provides one feasible method for driving the screening barrel 1, and does not mean that driving the screening barrel 1 can only be achieved by this technical means.

[0033] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A concrete manufactured sand granular screening auxiliary device, comprising a frame and a screening drum, wherein the screening drum is rotatably and sealed on the frame, and the frame is further provided with a transmission assembly connected to the screening drum, characterized in that: The screening barrel is equipped with auxiliary mechanisms; the frame includes a support frame and a mounting frame. There are two support frames, which are rotatably and sealingly connected to both ends of the screening barrel. The mounting frame is aligned with the axis of the screening barrel and connected to the two support frames. There are several auxiliary mechanisms, which are evenly distributed on the mounting frame. Each auxiliary mechanism includes a baffle plate, a connector, a connecting seat, and a rotator. The connecting seat is connected to the mounting frame. The baffle plate has a fan-shaped structure that fits and matches the inner wall of the screening barrel. The connector is connected to the non-arc edge of the baffle plate and is rotatably connected to the connecting seat. The rotator is located on the connecting seat and is matched with the drive mechanism of the connector.

2. The auxiliary device for screening granular concrete sand according to claim 1, characterized in that: The rotator includes a first motor, a worm gear, and a worm wheel. The first motor is connected to the mounting bracket via a bracket. The worm gear is concentrically connected to the output shaft of the motor. The worm wheel is rotatably located on the side of the connecting seat and is concentrically connected to the axis of the connecting head. The worm gear and the worm wheel are meshed together.

3. The auxiliary device for screening granular concrete sand according to claim 2, characterized in that: The screen apertures of the screening barrel gradually increase in size from the feed side to the discharge side. The screen apertures of the screening barrel are also divided into zones according to the auxiliary mechanisms that are spaced out. The screen apertures in the same area have the same aperture size and correspond to the interval space formed by adjacent auxiliary mechanisms.

4. The auxiliary device for screening granular concrete sand according to claim 3, characterized in that: The transmission assembly includes a second motor, a transmission wheel, a driven ring, and a transmission belt. The second motor is fixedly mounted on a support frame on one side. The transmission wheel is concentrically connected to the output shaft of the motor. The driven ring is located in the area of ​​the screening barrel where no screen holes are opened. The transmission belt is wound between the transmission wheel and the driven ring.

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