Gas stirring nozzle for high-concentration slurry

Abstract

A gas stirring air nozzle for high-concentration slurry belongs to the field of gas jet and comprises a cylindrical air nozzle body, a conical groove is formed in the top end of the air nozzle body, an annular boss is arranged on the side wall of a center hole of the air nozzle body, a valve rod is inserted into the center hole, and a valve is connected to the top of the valve rod. The shape of the air valve is matched with that of the conical groove; the valve rod is sleeved with a spring and a baffle ring and is in threaded connection with a nut; the two ends of the spring abut against and make contact with the annular boss and the baffle ring respectively. The bottom end of the air tap body is connected with a connector, a through hole is formed in the lower portion of the connector, a conical cavity is formed in the middle of the connector, a rigid ball is arranged at the bottom end of the conical cavity, a hole plate is arranged above the rigid ball, and the air tap body is in threaded connection with the connector and provided with a sealing gasket. The nozzle has the advantages of being stable in flow, free of backflow, convenient to replace, capable of saving energy and reducing consumption, and effectively solves the problems that a traditional nozzle is low in efficiency, high in energy consumption, frequent in maintenance and the like.

Description

Technical Field

[0001] The utility model belongs to the field of gas jets, and in particular relates to a gas stirring jet nozzle for high-concentration slurry. Background Art

[0002] With the continuous promotion of mine filling operation technology, the filling station, as the core link of modern mine filling operation, has a direct impact on the mining efficiency and safety level of the entire mine with its working efficiency. The air jet is mainly used for mixing and stirring high-concentration slurry in the tank. By forming a gas jet, the medium is stirred to make the slurry evenly mixed and not compacted. High-concentration slurry has high density and sand content, and high viscosity. Traditional filling station air jets have problems such as unstable flow, high energy consumption, and limited spray coverage, which affect the filling quality and efficiency.

[0003] Therefore, a new type of high-efficiency and energy-saving high-concentration slurry stirring air nozzle is developed to solve the above problems and meet the needs of modern mine filling operations. Summary of the invention

[0004] The utility model aims to provide a gas stirring jet nozzle for high-concentration slurry, which has the advantages of stable flow, no backflow, easy replacement, energy saving and consumption reduction, and effectively solves the problems of low efficiency, high energy consumption and frequent maintenance existing in traditional nozzles.

[0005] The technical solution adopted by the utility model is:

[0006] A gas agitation air jet nozzle for high-concentration slurry, comprising a cylindrical air jet body, a conical groove is formed at the top of the air jet body, an annular boss is formed on the side wall of the center hole of the air jet body, a valve stem is inserted in the center hole, a valve is connected to the top of the valve stem, and the shape of the valve matches the conical groove;

[0007] A spring and a retaining ring are sleeved on the valve stem and are threadedly connected with a nut; two ends of the spring are respectively in contact with the annular boss and the retaining ring;

[0008] A connector is connected to the bottom of the air nozzle body, a through hole is opened at the bottom of the connector, a conical cavity is opened in the middle, a rigid sphere is arranged at the bottom of the conical cavity, a perforated plate is arranged above the rigid sphere, and a sealing gasket is arranged at the connection between the air nozzle body and the connector.

[0009] When not working, the spring is in a compressed state, which fastens the valve in the conical groove at the top of the nozzle body to prevent the slurry from flowing into the nozzle; when stirring operation is required, the compressed air enters the conical cavity through the through hole at the bottom of the connector. During this process, the rigid sphere is pushed open, and then enters the center hole of the nozzle body through the orifice plate, and reaches the bottom of the valve along the annular gap between the annular boss and the valve stem, forming an upward blowing force, thereby pushing the valve upward, and the airflow is sprayed obliquely into the slurry along the gap between the valve and the conical groove, causing rotational stirring of the slurry. During this process, the spring is further compressed, and the size of the gap formed is related to the elastic design of the spring 5.

[0010] Furthermore, 4-6 ventilation holes are provided in the annular boss.

[0011] By arranging a plurality of vent holes in the annular boss, the compressed air can flow through the central hole more evenly. Meanwhile, compared with large-sized holes, smaller-sized vent holes can increase the air pressure and enhance the stirring effect.

[0012] Furthermore, a trumpet-shaped air hole is provided at the center of the orifice plate, and a plurality of independent air holes are provided outside the trumpet-shaped air hole.

[0013] Furthermore, the spring is a compression linear spring, and the preload is set to 2N.

[0014] By designing a suitable elastic coefficient, that is, pre-pressure, the valve can be tightly fastened in the conical groove at the top of the nozzle body when the nozzle is not working. When stirring operation is required, the valve can be opened to a suitable degree according to the slurry density, viscosity and other properties to achieve an ideal stirring effect. In this process, although the spring is further compressed, no large resistance is formed, thereby reducing energy consumption and achieving energy-saving effects.

[0015] Furthermore, the mass range of the rigid sphere is 1.41 g-4.11 g, and the diameter range of the sphere is 7 mm-10 mm according to different working conditions.

[0016] By optimizing the mass range of the rigid sphere, when the valve is damaged, the rigid sphere can automatically close at normal pressure, achieving a secondary sealing effect and preventing the backflow of high-concentration slurry.

[0017] Furthermore, the valve stem is threadedly connected to the valve or is integrally formed with the valve.

[0018] Beneficial effects of the utility model:

[0019] By setting reasonable spring parameters, boss vent holes and other structures, the utility model can (1) improve the injection efficiency and ensure that the slurry is uniform and free of lumps. (2) Reduce energy consumption and reduce operating costs. (3) Enhance the durability of the nozzle, reduce maintenance frequency, and extend the service life. (4) Ensure the stability and reliability of the nozzle under complex working conditions. After field verification, the following effects have been achieved: (1) The filling efficiency is improved by more than 20%, reducing the gaps and safety hazards caused by uneven high-concentration slurry. (2) Energy consumption is reduced by 15%, significantly reducing operating costs. (3) The life of the nozzle is extended by at least 50%, reducing the time and cost of frequent replacement and maintenance.

[0020] On the other hand, by setting a reasonable mass range of the rigid sphere, when the valve is damaged, the rigid sphere can automatically close at normal pressure, achieving a secondary sealing effect and preventing the backflow of high-concentration slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the overall structure of the utility model;

[0022] Figure 2 It is the cross-sectional view and top view of the air nozzle body. In the top view, the circle in the center is the center hole, and the six small circles are the vent holes;

[0023] Figure 3 It is a schematic diagram of the valve stem and valve;

[0024] In the figure, 1. valve body, 2. annular boss, 3. valve stem, 4. valve, 5. spring, 6. retaining ring, 7. nut, 8. connector, 9. rigid sphere, 10. orifice plate, 11. sealing gasket. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 3 As shown, a gas stirring air nozzle for high-concentration slurry comprises a cylindrical air nozzle body 1, a conical groove is formed at the top of the air nozzle body 1, an annular boss 2 is provided on the side wall of the center hole of the air nozzle body 1, a valve stem 3 is inserted in the center hole, a valve 4 is integrally formed on the top of the valve stem 3, and the shape of the valve 4 matches the conical groove; a spring 5 and a retaining ring 6 are sleeved on the valve stem 3, and a nut 7 is threadedly connected; the two ends of the spring 5 are respectively in contact with the annular boss 2 and the retaining ring 6; a connector 8 is connected to the bottom end of the air nozzle body 1, a through hole is formed in the lower part of the connector 8, a conical cavity is formed in the middle part, a rigid sphere 9 is provided at the bottom end of the conical cavity, a orifice plate 10 is provided above the rigid sphere 9, the air nozzle body 1 is threadedly connected to the connector 8, and a sealing gasket 11 is provided at the connection between the air nozzle body 1 and the connector 8.

[0026] When not working, the spring 5 is in a compressed state, and the valve 4 is tightly buckled in the conical groove at the top of the nozzle body 1 to prevent the slurry from flowing into the nozzle; when stirring operation is required, the compressed air enters the conical cavity through the through hole at the bottom of the connecting body 8. In this process, the rigid sphere 9 is pushed open, and then enters the center hole of the nozzle body 1 through the orifice plate 10, and reaches the bottom of the valve 4 along the annular gap between the annular boss 2 and the valve stem 3, forming an upward blowing force, thereby pushing the valve 4 upward, and the airflow is obliquely sprayed into the slurry along the gap between the valve 4 and the conical groove, forming a rotating stirring of the slurry. In this process, the spring 5 is further compressed, and the size of the gap formed is related to the elastic design of the spring 5.

[0027] Six vent holes are provided in the annular boss 2. By providing a plurality of vent holes in the annular boss 2, the compressed air can flow through the central hole more evenly. Meanwhile, compared with the large-sized holes, the smaller-sized vent holes can increase the air pressure and enhance the stirring effect.

[0028] A trumpet-shaped air hole is provided at the center of the orifice plate 10, and a plurality of independent air holes are provided outside the trumpet-shaped air hole.

[0029] The spring 5 is a compression linear spring, and the preload is set to 2 N. By designing a suitable elastic coefficient, i.e., preload, the valve 4 can be tightly buckled in the conical groove at the top of the nozzle body 1 when the nozzle is not working, and when stirring is required, the valve 4 can be opened to a suitable degree according to the slurry density, viscosity and other properties to achieve an ideal stirring effect. In this process, although the spring 5 is further compressed, it will not form a large resistance, thereby reducing energy consumption and achieving energy saving effect.

[0030] The mass of the rigid sphere 9 is in the range of 1.41 g to 4.11 g, and the diameter of the sphere is in the range of 7 mm to 10 mm according to different working conditions. In this embodiment, the mass of the rigid sphere 9 is set to 2.09 g, and the diameter of the sphere is 8 mm.

[0031] By optimizing the mass range of the rigid sphere 9, when the valve 4 is damaged, the rigid sphere 9 can automatically close under normal pressure, achieving a secondary sealing effect and preventing the backflow of high-concentration slurry.

Claims

1. A gas agitation nozzle for high-concentration slurry, characterized in that: The invention comprises a cylindrical air nozzle body (1), a conical groove is formed at the top of the air nozzle body (1), an annular boss (2) is formed on the side wall of the center hole of the air nozzle body (1), a valve stem (3) is inserted into the center hole, a valve (4) is connected to the top of the valve stem (3), and the shape of the valve (4) matches the conical groove; A spring (5) and a retaining ring (6) are sleeved on the valve stem (3) and are threadedly connected with a nut (7); two ends of the spring (5) are respectively in contact with the annular boss (2) and the retaining ring (6); A connector (8) is connected to the bottom end of the air nozzle body (1), a through hole is provided at the bottom of the connector (8), a conical cavity is provided in the middle, a rigid sphere (9) is provided at the bottom end of the conical cavity, a perforated plate (10) is provided above the rigid sphere (9), and a sealing gasket (11) is provided at the connection between the air nozzle body (1) and the connector (8).

2. A gas agitation nozzle for high-concentration slurry according to claim 1, characterized in that: 4 to 6 ventilation holes are arranged in the annular boss (2).

3. A gas agitation jet nozzle for high-concentration slurry according to claim 1, characterized in that: A trumpet-shaped air hole is provided at the center of the orifice plate (10), and a plurality of independent air holes are provided outside the trumpet-shaped air hole.

4. A gas agitation jet nozzle for high-concentration slurry according to claim 1, characterized in that: The spring (5) is a compression linear spring, and the preload is set to 2N.

5. The gas agitation jet nozzle for high-concentration slurry according to claim 1, characterized in that: The mass range of the rigid sphere (9) is 1.41 g to 4.11 g, and the diameter range of the sphere is 7 mm to 10 mm according to different working conditions.

6. A gas agitation jet nozzle for high-concentration slurry according to claim 1, characterized in that: The valve stem (3) and the valve (4) are threadedly connected or integrally formed.

Images