CN211812323U - Dry sand lifting device - Google Patents

Abstract

A dry sand lifting device is used for conveying and lifting dry sand to a designated position. The inner center of the sand storage box is equipped with a cylinder liner, a piston rod in the middle of the cylinder liner, an umbrella cap at the end of the piston rod, an air intake pipe in the middle of the cylinder liner, a sand outlet pipe on the outside of the bottom of the sand storage box, and a sand storage box. The top is equipped with a box cover, and the dry sand is poured into the sand storage box through the box cover with a funnel. Due to the included angle a in the small hole in the lower part of the cylinder liner, the sand cannot enter the cylinder liner. Connect the air intake pipe to the compressed air, the piston rod rises under the action of the compressed air, seals the opening on the box cover, and continues to enter the compressed air, the sand overflows from the sand outlet pipe and is transported to the designated position under the action of the gas pressure. When the sand in the sand storage box is completed, turn off the compressed air, the piston rod will automatically descend under the action of gravity, open the opening on the box cover, and enter the next cycle. Compared with the prior art, the utility model has the characteristics of convenient operation, simple structure, time-saving and labor-saving and the like.

Description

A dry sand lifting device

technical field

The utility model relates to a sand lifting device, which is especially used for lifting dry sand.

Background technique

At present, in places where the space is small, the dry sand is lifted to a place with a relatively low height, which is generally handled manually or lifted by a bucket elevator. The manual handling process is labor-intensive; the bucket elevator has a complex structure and many failures.

SUMMARY OF THE INVENTION

The purpose of the utility model is to design an automatic sealing dry sand lifting device with simple structure, convenience and practicality, which is designed in view of the above deficiencies.

The technical solution of the utility model is: comprising a sand storage box and a box cover; the box cover is installed on the upper part of the sand storage box, the box cover is provided with an opening, the lower end of the cylinder liner is installed on the inner surface of the bottom of the sand storage box, and the lower part of the piston rod is inserted In the upper inner cavity of the cylinder liner, the upper end of the piston rod is provided with an umbrella cap for sealing the opening, and the umbrella cap is covered with a sealing rubber gasket; it also includes an intake pipe for introducing compressed air into the inner cavity of the cylinder liner. Passing through the installation hole on the side of the sand storage box, the end of the intake pipe is connected to the interface on the side of the cylinder liner, the bottom nozzle of the sand outlet pipe is installed on the side of the sand storage box, and the top nozzle of the sand outlet pipe is higher than the bottom nozzle of the sand outlet pipe; There are a plurality of obliquely opened small holes at the bottom of the cylinder liner.

The position of the orifice on the outside of the small hole is lower than the position of the orifice on the inside of the small hole.

The small hole is an inclined cylindrical hole, and the position of the outer orifice of the inclined cylindrical hole is lower than the position of the inner orifice of the inclined cylindrical hole.

The angle a between the line connecting the upper edge of the orifice on the outside of the small hole to the lower edge of the orifice on the inside of the small hole and the horizontal line is smaller than the angle of repose of the dry sand. The maximum angle (angle of one side to the ground) at which dry sand can maintain a natural stable state when stacked is called the "angle of repose". After this angle is formed, if this kind of bulk material is piled up, it will slide down naturally. Keeping this angle will only increase the height and increase the bottom area. The function of this angle is to prevent the dry sand outside the cylinder liner from flowing into the cylinder liner naturally and affect the movement of the piston rod. Before the sand production pipe, the gas pressure at the inner end of the small hole is lower than the gas pressure at the outer end of the small hole, continue to pass the compressed gas until the gas pressure at the inner end of the small hole is greater than the gas pressure at the outer end of the small hole, and the sand production pipe begins to produce sand.

The sand storage box is sealed with the box cover.

A funnel is attached to the opening of the box cover.

The lower opening of the funnel is circular, and the diameter of the opening is smaller than the diameter of the bottom surface of the umbrella cap.

The use method of the utility model is as follows: the dry sand is poured into the sand storage box through the box cover with a funnel. Because the small hole in the lower part of the cylinder liner has an included angle a, the sand cannot enter the cylinder liner. Connect the air intake pipe to the compressed air, the piston rod rises under the action of the compressed air, seals the opening on the box cover, and continues to enter the compressed air, the sand overflows from the sand outlet pipe and is transported to the designated position under the action of the gas pressure. When the sand in the sand storage box is finished, the compressed air is turned off, the piston rod is automatically lowered by gravity, and the opening on the box cover is opened.

The utility model solves the problem of lifting and conveying dry sand. Compared with the prior art, the utility model has the characteristics of convenient operation, simple structure, convenient maintenance, time-saving and labor-saving and the like.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

FIG. 2 is a partial enlarged view of FIG. 1 .

In the figure, 1 is the sand storage box, 2 is the box cover, 3 is the cylinder liner, 4 is the piston rod; 5 is the sealing rubber gasket; 6 is the intake pipe; 7 is the sand outlet pipe.

Detailed ways

In Figure 1, the upper part of the sand storage box 1 is equipped with a box cover 2, the inner center is equipped with a cylinder liner 3, the middle of the cylinder liner 3 is equipped with a piston rod 4, and the outer side of the bottom of the sand storage box 1 is equipped with a sand outlet pipe 7. The middle part of the cylinder liner 3 is connected with an air intake pipe 6, and the bottom position is evenly distributed with small holes that open obliquely. 4 has an umbrella cap at the end, and is covered with a sealing rubber pad 5 on the outside of the umbrella cap. The upper part of the box cover 2 is provided with a funnel, and there is a circular opening in the middle, and the diameter of the opening is smaller than the diameter of the umbrella cap.

During production, the dry sand is poured into the sand storage box 1 through the box cover 2 with a funnel. Due to the included angle between the small holes in the lower part of the cylinder liner 3, the sand cannot enter the cylinder liner. Connect the air intake pipe 6 to the compressed air, the piston rod 4 rises under the action of the compressed air, seals the opening on the box cover 2, and continues to introduce the compressed air, the sand is under the action of the gas pressure, overflows from the sand outlet pipe 7, and is transported to the designated area. s position. After the sand is transported in the sand storage box 1, the compressed air is turned off, the piston rod 4 is automatically lowered under the action of gravity, the opening on the box cover 2 is opened, and the next cycle is entered. The whole process saves time and effort, and the lifting and conveying of dry sand can be completed only by opening and closing the air valve.

Claims (7)

1. The utility model provides a dry sand hoisting device which characterized in that: comprises a sand storage box (1) and a box cover (2); the box cover (2) is arranged at the upper part of the sand storage box (1), the box cover (2) is provided with an opening, the lower end of the cylinder sleeve (3) is arranged on the inner surface of the bottom of the sand storage box (1), the lower part of the piston rod (4) is inserted into the inner cavity at the upper part of the cylinder sleeve (3), the upper end of the piston rod (4) is provided with an umbrella-shaped cap for plugging the opening, and a sealing rubber pad (5) covers the umbrella-shaped cap; the air inlet pipe (6) is used for introducing compressed air into the inner cavity of the cylinder sleeve (3), the air inlet pipe (6) penetrates through a mounting hole in the side face of the sand storage box (1), the end part of the air inlet pipe (6) is connected with an interface in the side face of the cylinder sleeve (3), a pipe orifice at the bottom of the sand outlet pipe (7) is arranged on the side face of the sand storage box (1), and a pipe orifice at the top of the sand outlet pipe (7) is higher than a pipe orifice at the bottom of the sand outlet pipe (; the bottom of the cylinder sleeve (3) is provided with a plurality of small holes with inclined openings.

2. The dry sand lifting device of claim 1, wherein: the position of the outer hole of the small hole is lower than that of the inner hole of the small hole.

3. The dry sand lifting device of claim 1, wherein: the small hole is an inclined cylindrical hole, and the position of an outer side orifice of the inclined cylindrical hole is lower than the position of an inner side orifice of the inclined cylindrical hole.

4. The dry sand lifting device of claim 1, wherein: the included angle a between the connecting line from the upper edge of the orifice at the outer side of the small hole to the lower edge of the orifice at the inner side of the small hole and the horizontal line is smaller than the repose angle of the dry sand.

5. The dry sand lifting device of claim 1, wherein: the sand storage box (1) is connected with the box cover (2) in a sealing way.

6. The dry sand lifting device of claim 1, wherein: the opening of the box cover (2) is connected with a funnel.

7. The dry sand lifting device of claim 6, wherein: the opening at the lower part of the funnel is circular, and the diameter of the opening is smaller than that of the bottom surface of the umbrella-shaped cap.

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