Improved damage-free lifting mechanism

Abstract

The utility model discloses an improved damage-free lifting mechanism, which belongs to the technical field of grain drying equipment and comprises a shell, an annular lifting structure used for lifting grains is arranged in the shell, a material collecting box is arranged at the bottom of the shell, a separating device is fixedly mounted on the inner side of the annular lifting structure, and the separating device is arranged on the outer side of the shell. The lower end of the separating device is provided with a discharging port matched with the lifting structure, the discharging port is provided with a one-way control structure, the separating device is provided with a feeding port and an air outlet, the feeding port is communicated with the material collecting box through a hose, the air outlet is connected with an adjusting device, the adjusting device is connected with a vacuum fan, and the vacuum fan is connected with the lifting structure. The vacuum fan and the adjusting device are fixedly installed on the outer side of the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of grain drying equipment, and particularly relates to an improved non-destructive lifting mechanism. Background Art

[0002] In a non-breaking lifting and circulating system of a grain drying equipment with the patent number CN201710906934.5, since the belt and the hopper move in the shell, there are inevitably gaps between the shell and the belt and the hopper respectively. During the process of lifting grains by using the belt and the hopper, the grains in the hopper will inevitably fall. After the fallen grains separate from the belt and the hopper, they accumulate in the outer shell through the gaps. The space between the belt and the outer shell is small, and it is inconvenient to recycle the accumulated grains. At the same time, too much accumulated grains will also affect the normal operation of the belt. Content of the Utility Model

[0003] Regarding the problems existing in the prior art, an improved non-destructive lifting mechanism provided by the utility model adopts a separation device in cooperation with a vacuum fan to automatically recycle the grains collected in the aggregate bin, which can not only facilitate the recycling of the fallen grains in the shell, but also avoid the accumulation of grains in the shell from affecting the operation of the lifting structure.

[0004] In order to achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] An improved non-destructive lifting mechanism includes a shell. A ring-shaped lifting structure for lifting grains is arranged in the shell. An aggregate bin is arranged at the bottom of the shell. A separation device is fixedly installed inside the ring-shaped lifting structure. An outlet is arranged at the lower end of the separation device and is matched with the lifting structure. A one-way control structure is arranged at the outlet. An inlet and an air outlet are arranged on the separation device. A hose is connected between the inlet and the aggregate bin. The air outlet is connected with an adjusting device. The adjusting device is connected with a vacuum fan. The vacuum fan and the adjusting device are fixedly installed outside the shell.

[0006] Preferably, the aggregate bin is of a conical structure, and a level sensor is arranged in the aggregate bin.

[0007] Preferably, the separation device includes a detachable bin and an air bin. The bin is directly below the air bin. A steel mesh for filtering grains is arranged at one end of the bin close to the air bin. The air outlet is arranged on the air bin. The inlet and the outlet are arranged on the bin.

[0008] Preferably, the one-way control structure includes a baffle hingedly installed at the discharge port. A limit structure for restricting the rotation angle of the baffle is provided on the silo outside the discharge port. The maximum included angle between the baffle and the plane where the discharge port is located is not greater than 45°. A soft rubber layer is coated on the baffle.

[0009] Preferably, the adjusting device is set as a controllable T-shaped tee, and the controllable T-shaped tee is respectively connected to the vacuum fan and the air outlet.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. In the present utility model, the separation device is combined with the vacuum fan to realize the automatic recycling of the grain collected in the aggregate bin, which can not only facilitate the recycling of the grain falling in the shell, but also avoid the accumulation of grain in the shell affecting the operation of the lifting structure;

[0012] 2. In the present utility model, through the cooperation of the controllable T-shaped tee and the vacuum fan, while ensuring that the vacuum fan is always on, the normal operation of the separation device is ensured, which can effectively avoid the damage of the vacuum fan due to high-intensity repeated starting and stopping, and is beneficial to improving the service life of the vacuum fan. At the same time, through the cooperation of the controllable T-shaped tee and the time relay, timed grain suction can be realized to ensure the grain suction effect;

[0013] 3. In the present utility model, the aggregate bin is designed in a conical shape, which is convenient for the grain falling in the shell to converge into the aggregate bin. At the same time, the cooperation of the level sensor and the controllable T-shaped tee can recycle the grain in the aggregate bin after it accumulates to a certain amount, which can not only improve the grain recycling effect, but also ensure the alternating operation of the load and no-load of the vacuum fan, and can effectively reduce the energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view of an improved non-destructive lifting mechanism of the present utility model;

[0015] Figure 2 is the left view of an improved non-destructive lifting mechanism of the present utility model;

[0016] Figure 3 is the structural schematic diagram of the separation device of an improved non-destructive lifting mechanism of the present utility model.

[0017] In the figure: 1 - housing, 2 - lifting structure, 3 - discharge port, 4 - feed port, 5 - air outlet, 6 - vacuum fan, 7 - aggregate bin, 8 - silo, 9 - air chamber, 10 - controllable T-shaped tee. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0019] As Figures 1-3 shown, an improved non-destructive lifting mechanism includes a housing 1. A ring-shaped lifting structure 2 for grain lifting is provided inside the housing 1. An aggregate bin 7 is provided at the bottom of the housing 1. A separation device is fixedly installed inside the ring-shaped lifting structure 2. A discharge port 3 cooperating with the lifting structure 2 is provided at the lower end of the separation device. A one-way control structure is provided at the discharge port 3. A feed port 4 and an air outlet 5 are provided on the separation device. A hose is connected between the feed port 4 and the aggregate bin 7. The air outlet 5 is connected to an adjustment device, and the adjustment device is connected to a vacuum fan 6. The vacuum fan 6 and the adjustment device are fixedly installed outside the housing 1.

[0020] The aggregate bin 7 is configured as a conical structure to facilitate the aggregation of the grain falling into the housing 1. A level sensor is provided inside the aggregate bin 7 to monitor the grain stock in the aggregate bin 7 using the level sensor.

[0021] The separation device includes a detachable silo 8 and an air chamber 9. The silo 8 is located directly below the air chamber 9. A steel mesh for filtering grain is provided at one end of the silo 8 close to the air chamber 9. The air outlet 5 is located on the air chamber 9. The feed port 4 and the discharge port 3 are located on the silo 8. The use of the steel mesh can effectively retain the sucked grain in the silo 8, facilitating the directly dropping of the sucked grain into the lifting structure 2.

[0022] The one-way control structure includes a baffle hingedly installed at the discharge port 3. A limit structure for restricting the rotation angle of the baffle is provided on the silo 8 outside the discharge port 3. The maximum included angle between the baffle and the plane where the discharge port 3 is located is not greater than 45°. A soft rubber layer is coated on the baffle. The use of the limit structure can realize the automatic opening and closing of the discharge port 3, and the use of the soft rubber layer can ensure the sealing effect of the discharge port 3;

[0023] Among them, the limit structure can be set as a protrusion fixedly installed on the outside of the silo 8, and the protrusion cooperates with the baffle to restrict the rotation angle of the baffle.

[0024] The adjusting device is configured to controllably operate a T-shaped three-way pipe 10. The controllable T-shaped three-way pipe 10 includes a T-shaped three-way pipe which has an A connection port, a B connection port, and a C connection port. The A connection port and the B connection port are respectively connected to the vacuum fan 6 and the air outlet 5. The C connection port is not connected to any device and is used to suck in the air outside the housing 1. Among them, the A connection port and the C connection port are in a normally open mode. An actuator driven by pneumatic power is installed on the T-shaped three-way pipe, and a solenoid valve is installed on the actuator. The solenoid valve is connected to a time relay. The start of the actuator is controlled by the solenoid valve, and the solenoid valve is controlled by the time relay. The solenoid valve and the time relay cooperate to achieve timed control of the actuator, determine the grain suction duration, and ensure the grain suction effect.

[0025] Among them, the solenoid valve is designed to be linked with the level sensor, so that the grain in the aggregate bin 7 can be automatically recycled after reaching a certain quantity. At the same time, the working duration of the solenoid valve is controlled by the time relay to achieve the control of the single-time grain recycling duration and ensure the grain recycling effect.

[0026] When the present utility model is working, while the lifting structure 2 is working, the vacuum fan 6 rotates. At this time, the air outside the housing 1 is sucked through the controllable T-shaped three-way pipe 10, enabling the vacuum fan 6 to operate under no-load conditions. The grain dropped during the working process of the lifting structure 2 falls into the housing 1 through the gap between the lifting structure 2 and the housing 1. Under the action of its own gravity, the grain accumulates in the aggregate bin 7 at the bottom of the outer shell. When the grain in the aggregate bin 7 reaches the position of the level sensor, the controllable T-shaped three-way pipe 10 connects the vacuum fan 6 and the air outlet 5 for a certain period of time. The air flow drives the separation device to work, and the grain in the aggregate bin 7 is sucked into the silo 8 through a hose. Under the action of the steel mesh, the grain remains in the silo 8, and the air enters the air chamber 9 and then is discharged outside through the controllable T-shaped three-way pipe 10 and into the vacuum fan 6. At the same time, when the controllable T-shaped three-way pipe 10 connects the air outlet 5, the air pressure in the silo 8 decreases. Therefore, the outside air pushes the baffle to move upward, realizing the closing of the discharge port 3. After the vacuum fan 6 and the air outlet 5 are connected for a certain period of time, they are disconnected through the controllable T-shaped three-way pipe 10. At this time, under the action of the gravity of the grain and the baffle itself in the silo 8, the discharge port 3 opens, and the grain in the silo 8 naturally falls onto the lifting structure 2. During the working process of the lifting structure 2, through the cooperation of the level sensor and the controllable T-shaped three-way pipe 10, the alternating operation of the vacuum fan 6 under no-load and load conditions is realized, completing the automatic recycling of the dropped grain in the housing 1.

[0027] The above content is only an example and description of the structure of the present utility model. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as it does not deviate from the structure of the utility model or exceed the scope defined by this claim book, it should fall within the protection scope of the present utility model.

Claims

1. An improved non-destructive lifting mechanism, characterized in that It includes a housing, inside which there is an annular lifting structure for grain lifting. At the bottom of the housing, there is an aggregate bin. A separation device is fixedly installed inside the annular lifting structure. At the lower end of the separation device, there is a discharge port that cooperates with the lifting structure. The discharge port is provided with a one-way control structure. The separation device is provided with a feed port and an air outlet. A hose is connected between the feed port and the aggregate bin. The air outlet is connected to an adjustment device, and the adjustment device is connected to a vacuum fan. The vacuum fan and the adjustment device are fixedly installed outside the housing.

2. The improved non-destructive lifting mechanism according to claim 1, wherein The aggregate bin is designed as a conical structure, and a level sensor is arranged inside the aggregate bin.

3. An improved non-destructive lifting mechanism according to claim 1, characterized in that, The separation device includes a detachable silo and an air chamber. The silo is located directly below the air chamber. At one end of the silo close to the air chamber, there is a steel mesh for filtering grains. The air outlet is located on the air chamber, and the feed port and the discharge port are located on the silo.

4. An improved non-destructive lifting mechanism according to claim 3, characterized in that, The one-way control structure includes a baffle hinged to the discharge port. There is a limit structure on the silo outside the discharge port for restricting the rotation angle of the baffle. The maximum angle between the baffle and the plane where the discharge port is located is not greater than 45°. A soft rubber layer is coated on the baffle.

5. An improved non-destructive lifting mechanism according to claim 2, characterized in that, The adjustment device is a controllable T-shaped three-way pipe, and the controllable T-shaped three-way pipe is respectively connected to the vacuum fan and the air outlet.

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