Cement powder storage device with self-circulation of gas

Abstract

The utility model discloses a cement powder storage device of gas self -circulation, its characterized in that, including upper head, cylinder and lower head, the top of upper head is equipped with vacuum feeding device, and its bottom is connected with cylinder through first sealing connection flange, the utility model discloses a butyl rubber air bag is set up, first exhausts the air in the cylinder to fill with nitrogen, in the process that cement powder enters through vacuum feeding port, the nitrogen in the device will be stored in butyl rubber air bag through air hole, in the use process of cement powder, the nitrogen stored in butyl rubber air bag will return to butyl rubber air bag again to realize the balance of the pressure intensity inside and outside the jar body, the utility model replaces the hydration hardening reaction of cement powder and moisture and other substances in air with nitrogen, and keeps dry for a long time, effectively prolongs the storage time of cement powder in the cylinder.

Description

Technical Field

[0001] This utility model relates to the field of cement powder storage tanks, and in particular to a cement powder storage device with autonomous gas circulation. Background Technology

[0002] Some projects require the purchase of specific brands and grades of cement, often in large quantities, but with limited short-term usage. This leads to high initial procurement and storage costs. Furthermore, according to current industry standards, cement becomes unusable after three months of its shelf life, resulting in significant waste. Unauthorized changes to cement manufacturers or the purchase of bagged cement violate supervision requirements and are strictly prohibited. To address these issues, we propose a gas-autonomous circulation cement powder storage device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a cement powder storage device with gas self-circulation, which can extend the shelf life of cement.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses a gas-auto-circulating cement powder storage device, characterized in that it includes an upper end cap, a cylinder and a lower end cap, wherein the top of the upper end cap is provided with a vacuum feeding device and its bottom is connected to the cylinder through a sealing flange.

[0006] The outer wall of the cylinder is provided with an annular cavity, inside which is a butyl rubber airbag, and outside of which is a hook. The butyl rubber airbag is connected to the inner cavity of the cylinder through a venting ring. The venting ring is provided with air holes and venting valves for controlling the opening and closing of the air holes.

[0007] The cylinder is provided with safety fixing plates at equal intervals along the axial direction, which are used to fix the butyl rubber airbag;

[0008] The lower part of the cylinder is provided with a nitrogen filling hole, and its bottom is connected to the lower end cap through a sealing flange.

[0009] The bottom of the lower end cap is provided with three locking outlets and a support frame.

[0010] As a preferred technical solution of this utility model, the ventilation ring is an annular hollow structure, its inner peripheral wall is welded and fixed to the outer peripheral wall of the cylinder, and its outer peripheral wall is sealed and connected to the butyl rubber air bag. The air holes are evenly distributed along the circumference of the ventilation ring.

[0011] As a preferred technical solution of this utility model, the vent valve is a pneumatically driven automatic valve, which is used to open when the gas pressure inside the cylinder exceeds 0.1MPa to allow nitrogen to enter the butyl rubber air bag.

[0012] As a preferred embodiment of this utility model, the volume of the butyl rubber airbag is not less than 15% of the effective volume of the cylinder, and its airbag wall thickness is greater than five millimeters.

[0013] As a preferred technical solution of this utility model, the three-locked discharge port is a triple sealing structure including a mechanical manual lock, a pneumatic balance valve and an electric butterfly valve.

[0014] As a preferred technical solution of this utility model, the cylinder is equipped with a level gauge and a pressure gauge, which are used to monitor the powder content and internal air pressure, respectively.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention utilizes a butyl rubber air bladder. First, the air inside the cylinder is purged and filled with nitrogen. As cement powder enters through the vacuum inlet, the nitrogen is stored in the butyl rubber air bladder through pores. During the use of the cement powder, the nitrogen stored in the butyl rubber air bladder returns to the bladder, thus achieving pressure balance inside and outside the cylinder. This invention uses nitrogen instead of air to prevent the hydration and hardening reaction between the cement powder and moisture and other substances in the air, maintaining dryness for a long time and effectively extending the storage time of the cement powder inside the cylinder. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the ventilation ring of this utility model;

[0020] In the diagram: 1. Vacuum feeding device; 2. Upper end cap; 3. Cylinder; 4. Vent ring; 5. Safety fixing plate; 6. Lower end cap; 7. Three-locked discharge port; 8. Fixing frame; 9. Air hole; 10. Butyl rubber airbag; 11. Sealing connection flange; 12. Hook; 13. Nitrogen filling hole. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] In the attached diagram, all identical reference numerals refer to the same components.

[0023] Example 1

[0024] like Figure 1-2 As shown, this utility model provides a cement powder storage device with autonomous gas circulation, characterized in that it includes an upper end cap 2, a cylinder 3 and a lower end cap 6. The top of the upper end cap 2 is provided with a vacuum feeding device 1, and its bottom is connected to the cylinder 3 through a sealing connection flange 11.

[0025] The outer wall of the cylinder 3 is provided with an annular cavity, inside which is a butyl rubber airbag 10, and outside which is a hook 12. The butyl rubber airbag 10 is connected to the inner cavity of the cylinder 3 through a ventilation ring 4. The ventilation ring 4 is provided with an air hole 9 and a ventilation valve for controlling the opening and closing of the air hole.

[0026] The cylinder 3 is provided with safety fixing plates 5 at equal intervals along the axial direction, which are used to fix the butyl rubber airbag 10;

[0027] The lower part of the cylinder 3 is provided with a nitrogen filling hole 13, and its bottom is connected to the lower end head 6 through a sealing connection flange 11.

[0028] The bottom of the lower end cap 6 is provided with three locking outlets 7 and a support bracket 8.

[0029] The ventilation ring 4 is a hollow annular structure. Its inner circumferential wall is welded and fixed to the outer wall of the cylinder 3, and its outer circumferential wall is sealed to the butyl rubber air bag 10. The air holes 9 are evenly distributed around the ventilation ring 4.

[0030] The vent valve is a pneumatically driven automatic valve, which is used to open when the air pressure inside the cylinder 3 exceeds 0.1 MPa to allow nitrogen to enter the butyl rubber airbag 10.

[0031] The volume of the butyl rubber airbag 10 is not less than 15% of the effective volume of the cylinder 3, and its airbag wall thickness is greater than five millimeters.

[0032] The triple-locking discharge port 7 is a triple-sealing structure consisting of a mechanical manual lock, a pneumatic balance valve, and an electric butterfly valve.

[0033] The cylinder 3 is equipped with a level gauge and a pressure gauge, which are used to monitor the powder inventory and internal air pressure, respectively.

[0034] In summary, this invention, by setting up a butyl rubber airbag 10, first expels the air from the cylinder 3 and fills it with nitrogen. During the process of cement powder entering through the vacuum feed port, the nitrogen in the device will be stored in the butyl rubber airbag 10 through the air pores. During the use of cement powder, the nitrogen stored in the butyl rubber airbag 10 will return to the butyl rubber airbag 10, thereby achieving a balance of pressure inside and outside the tank. This invention uses nitrogen instead of air to prevent the hydration and hardening reaction between cement powder and moisture and other substances in the air, and keeps it dry for a long time, effectively extending the storage time of cement powder in the cylinder 3.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cement powder storage device that autonomously circulates a gas, characterized by, It includes an upper end cap (2), a cylinder (3), and a lower end cap (6), characterized in that: The top of the upper end cap (2) is provided with a vacuum feeding device (1), and its bottom is connected to the cylinder (3) through a sealing connection flange (11); The outer wall of the cylinder (3) is provided with an annular cavity, inside which is provided a butyl rubber airbag (10), and outside which is provided a hook (12). The butyl rubber airbag (10) is connected to the inner cavity of the cylinder (3) through a ventilation ring (4). The ventilation ring (4) is provided with an air hole (9) and a ventilation valve for controlling the opening and closing of the air hole. The cylinder (3) is provided with safety fixing plates (5) at equal intervals along the axial direction, which are used to fix the butyl rubber airbag (10). The lower part of the cylinder (3) is provided with a nitrogen filling hole (13), and its bottom is connected to the lower end cap (6) through a sealing connection flange (11); The bottom of the lower end cap (6) is provided with three locking outlets (7) and a support bracket (8).

2. A cement powder storage device according to claim 1, wherein The ventilation ring (4) is a hollow annular structure. Its inner circumferential wall is welded and fixed to the outer wall of the cylinder (3), and its outer circumferential wall is sealed and connected to the butyl rubber air bag (10). The air holes (9) are evenly distributed along the circumference of the ventilation ring (4).

3. A cement powder storage device according to claim 1, wherein The vent valve is a pneumatically driven automatic valve, which is used to open when the gas pressure inside the cylinder (3) exceeds 0.1 MPa to allow nitrogen to enter the butyl rubber air bag (10).

4. A gas-autocirculating cement powder storage device according to claim 1, characterized in that, The volume of the butyl rubber airbag (10) is not less than 15% of the effective volume of the cylinder (3), and its airbag wall thickness is greater than five millimeters.

5. A gas-autocirculating cement powder storage device according to claim 1, characterized in that, The three-locked discharge port (7) is a triple-sealing structure including a mechanical manual lock, a pneumatic balance valve and an electric butterfly valve.

6. A gas-autocirculating cement powder storage device according to claim 1, characterized in that, The cylinder (3) is equipped with a level gauge and a pressure gauge, which are used to monitor the amount of powder and the internal air pressure, respectively.

Images