An injection device with full coverage of the adjustment range

Abstract

A spraying device with full coverage of the adjustment range. A pressure-receiving ring that can move up and down is arranged inside the outer tube. The lower end face of the upper joint of the outer cavity nozzle body is connected to the upper end face of the lower joint of the outer cavity nozzle body to form a cylindrical inner cavity. An inner cavity nozzle body that can rotate within a certain angle range is arranged inside the cylindrical inner cavity. A fixed spraying port is opened at the lower end of the lower joint of the outer cavity nozzle body. The pressure-receiving ring is hinged to the inner cavity nozzle body through a connecting rod. A spring is installed in the frustum-shaped cavity formed by the pressure-receiving ring and the upper joint of the outer cavity nozzle body. Since the pressure-receiving ring is hinged to the inner cavity nozzle body through a connecting rod, the pressure-receiving ring is pushed by the pressure change of the mixed fluid, thereby driving the inner cavity nozzle body to rotate, so that the inner cavity spraying port thereof cooperates with the fixed spraying port of the lower joint of the outer cavity nozzle body in a relative rotation manner to change the actual spraying range. The invention has low cost, simple control and wide environmental adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-fluid medium mixing and injection, and particularly relates to an adjustable range full-coverage injection device for solving the problem of no dead angle in the injection of mixed fluids. Background Art

[0002] There are the following two common methods for adjusting the mixing and injection range of multi-fluid media. Taking the mixing and injection of gas and water as an example, the first one is as Figure 1 shown. The injection range in the middle part is fixed. The hydraulic cylinder or air cylinder with displacement sensors on both sides drives the nozzle to move along an oblique line. Figure 1 (a) The injection range is the smallest. Figure 1 (b) The injection range is the largest. Between the two, the injection range on both sides is adjusted by driving the nozzle to move along an oblique line through a hydraulic cylinder or an air cylinder; the other is shown in Figure 2. The media circuits are supplied in two paths on both sides and in the middle, realizing two changes in the injection range. The injection range in Figure 2(a) is the smallest, and the injection range in Figure 2(b) is the largest. It cannot be adjusted between the two; the former has a high control cost. Since the displacement feedback of the displacement sensor is transmitted through electrical signals, the working environment requirements are relatively strict, and it is difficult to work safely in harsh environments such as water and gas. In an environment with limited structural space, it is difficult to arrange the mechanism, the maintenance cost is high, and the labor intensity of workers is large; the latter has only two adjustment ranges, and the range between the two cannot be adjusted. Summary of the Invention

[0003] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide an adjustable range full-coverage injection device, which realizes random range adjustment, is convenient to apply in harsh environments and space-limited conditions, has a low maintenance cost, simple control, wide adaptability to the environment, and can achieve no dead angle in the injection range adjustment.

[0004] In order to achieve the above purpose, the technical solution of the present invention is as follows:

[0005] An adjustable range full-coverage injection device includes an upper joint 5 of an outer cavity nozzle body connected to an outer tube 2. A pressure-receiving ring 4 that can move up and down is arranged inside the outer tube 2. The end of the stroke of the pressure-receiving ring 4 is a position-reaching ring 3, and the position-reaching ring 3 is fixed between the inner tube 1 and the outer tube 2 or sleeved and fixed on the inner tube 1;

[0006] The lower end surface of the upper joint 5 of the outer cavity nozzle body is connected to the upper end surface of the lower joint 10 of the outer cavity nozzle body. After being fixedly connected, a cylindrical inner cavity 9-1 is formed. An inner cavity nozzle body 9 is arranged inside the cylindrical inner cavity 9-1; a fixed injection port 10-1 is opened at the lower end of the lower joint 10 of the outer cavity nozzle body.

[0007] The pressure-receiving ring 4 is hinged to the inner cavity nozzle body 9 through a connecting rod 7; a spring 6 is installed in the frustum-shaped cavity 6-1 formed by the pressure-receiving ring 4 and the upper joint 5 of the outer cavity nozzle body.

[0008] The described inner cavity nozzle body 9 is a rotating body that can rotate within a range of 0 - 180 degrees; the water inlet is large enough to ensure water intake within the rotation angle range.

[0009] Advantages of the present invention:

[0010] 1. By adjusting the inner cavity nozzle body 9, the inner cavity injection nozzle thereof is cooperated with the fixed injection nozzle of the lower joint 10 of the outer cavity nozzle body in a relative rotation manner to change the actual injection angle.

[0011] 2. Since the pressure - receiving ring 4 is hinged to the inner cavity nozzle body 9 through the connecting rod 7, the pressure - receiving ring 4 is pushed by the pressure change of the mixed fluid, thereby driving the inner cavity nozzle body 9 to rotate. It has low cost, simple control, and wide adaptability to the environment. Description of the drawings

[0012] Figure 1 It is a working schematic diagram of the cylinder body adjustment device with a displacement sensor, where: Figure 1 (a) is a working schematic diagram of the injection device when the injection range is the smallest, Figure 1 (b) is a working schematic diagram of the injection device when the injection range is the largest.

[0013] Figure 2 is a working schematic diagram of the two - loop adjustment method for the middle part and both sides. Among them: Figure 2(a) is a schematic diagram when the injection range is the smallest, and Figure 2(b) is a schematic diagram when the injection range is the largest.

[0014] Figure 3 is a structural schematic diagram of the device of the present invention. Among them: Figure 3(a) is a structural schematic diagram of the injection device when the injection range is the largest, and Figure 3(b) is a structural schematic diagram of the injection device when the injection range is the smallest.

[0015] Figure 4 It is a structural schematic diagram of the upper joint 5 of the outer cavity nozzle body of the present invention.

[0016] Figure 5 It is a position schematic diagram of the pressure - receiving ring 4, the spring 6, and the inner cavity nozzle body 9 of the present invention.

[0017] Figure 6 It is a structural schematic diagram when the inner cavity nozzle body 9 is a cylinder. Specific implementation manners

[0018] The present invention will be described in detail below with reference to the drawings.

[0019] Referring to Figure 3, an injection device with full - coverage adjustment range includes an upper joint 5 of the outer cavity nozzle body connected to the outer tube 2 (refer to Figure 4), a pressure ring 4 that can move up and down is arranged inside the outer tube 2 connected to the upper end of the upper joint 5 of the outer cavity nozzle body. The end of the stroke of the pressure ring 4 is the in-position ring 3, and the in-position ring 3 is fixed between the inner tube 1 and the outer tube 2 or sleeved and fixed on the inner tube 1;

[0020] The lower end face of the upper joint 5 of the outer cavity nozzle body is connected to the upper end face of the lower joint 10 of the outer cavity nozzle body. After being fixedly connected, a cylindrical inner cavity 9-1 is formed. An inner cavity nozzle body 9 that can rotate within a certain angle range is arranged inside the cylindrical inner cavity 9-1; a fixed injection port 10-1 is opened at the lower end of the lower joint 10 of the outer cavity nozzle body.

[0021] Referring to Figure 3, Figure 5 , the pressure ring 4 is hinged to the inner cavity nozzle body 9 through a connecting rod 7 and a pin 8; a spring 6 is installed inside the frustum-shaped cavity 6-1 formed by the pressure ring 4 and the upper joint 5 of the outer cavity nozzle body.

[0022] The inner cavity nozzle body 9 described is a rotating body. Referring to Figure 6 , the rotating body is a cylinder, and it can also be designed as a sphere, and it can rotate within the range of 0-180°; the water inlet is large to ensure that water can enter within its rotation angle, and the shape of the port and the inner cavity are designed according to the spraying requirements.

[0023] The working principle of the present invention is as follows:

[0024] Water passes through the inner cavity of the inner tube 1. The inner circular ring surface of the upper part of the pressure ring 4 is matched with the outer circular ring surface of the inner tube 1, and the outer circular ring surface of the upper part of the pressure ring 4 is matched with the inner circular ring surface of the outer tube 2. Compressed air is introduced between the circular inner tube 1 and the circular outer tube 2 to push the pressure ring 4. A certain amount of pre-pressure is applied to the spring 6 installed between the pressure ring 4 and the upper joint 5 of the outer cavity nozzle body under the action of the in-position ring 3, and at this time the spraying range is the smallest. The connecting rod 7 is hinged to the pressure ring 4, and the inner cavity nozzle body 9 is hinged through the pin 8. When the pressure of the compressed air acting on the pressure ring 4 is large enough, it will push the pressure ring 4 to move downward and push the inner cavity nozzle body 9 to rotate to increase the spraying range.

[0025] ① Process of realizing the range adjustment function

[0026] In Figure 3(a), the spraying range of the spraying device is the largest, and in Figure 3(b), the spraying range of the spraying device is the smallest; the distance from the nozzle to the spraying surface is H, the effective spraying angle is α, and the length of the spray on the spraying surface is L1; when the nozzle rotates counterclockwise, the spraying range on the left decreases, and the right side coincides with the fixed spraying range. When the nozzle rotates to the position in Figure 3(b), the spraying center line of the inner cavity nozzle body 9 rotates by an angle β, and the spraying range reaches the smallest, and the length of the spraying surface is L2. The nozzle rotates between Figure 3(a) and 3(b) to realize the dead-angle-free range adjustment.

[0027] Figure 3(a) When the spraying range of the spraying device is the largest: Compressed air is passed between the inner pipe 1 and the outer pipe 2. When the pressure increases to a certain value, the upper end of the pressure-receiving ring 4 installed between the inner pipe 1 and the outer pipe 2 is pressed downward under the action of the compressed air, and the lower-end spring 6 is compressed to reach equilibrium and is stabilized at the H2 position. The two ends are respectively rotated to the position shown in Figure 3(a) with the pressure-receiving ring 4 and the inner cavity nozzle body 9. The spraying center line of the inner cavity nozzle body 9 is perpendicular to the spraying surface. At this time, the compressed air pressure and the water volume are the largest, and the spraying range is also the largest.

[0028] Figure 3(b) When the spraying range of the spraying device is the smallest: When the compressed air pressure passed between the inner pipe 1 and the outer pipe 2 is reduced to a certain value, the pressure-receiving ring 4 and the spring 6 extend to reach a new equilibrium and are stabilized at the H1 position. The pressure-receiving ring 4 and the inner cavity nozzle body 9 are rotated to the position shown in Figure 3(b), and the spraying center line of the inner cavity nozzle body 9 is rotated to the β position shown in Figure 3(b). At this time, the compressed air pressure and the water volume should be the smallest, and the spraying range is also the smallest.

Claims

1. A spraying device with full coverage of adjustment range, characterized in that, it includes an upper joint (5) of the outer cavity nozzle body connected to the outer pipe (2), a pressure-receiving ring (4) that can move up and down is arranged in the outer pipe (2), and the end of the stroke of the pressure-receiving ring (4) is a position-reaching ring (3); The lower end surface of the upper joint (5) of the outer cavity nozzle body is connected to the upper end surface of the lower joint (10) of the outer cavity nozzle body. After being fixedly connected, a cylindrical inner cavity (9-1) is formed. An inner cavity nozzle body (9) that can rotate within a certain angle range is arranged in the cylindrical inner cavity (9-1); a fixed spraying port is opened at the lower end of the lower joint (10) of the outer cavity nozzle body; The pressure-receiving ring (4) is hinged to the inner cavity nozzle body (9) through a connecting rod (7); a spring (6) is installed in the frustum-shaped cavity (6-1) formed by the pressure-receiving ring (4) and the upper joint (5) of the outer cavity nozzle body; The inner cavity nozzle body (9) is a rotating body and can rotate within a range of 0-180 degrees; the water inlet is large to ensure that water can enter within the rotation angle; The position-reaching ring (3) is fixed between the inner pipe (1) and the outer pipe (2) or sleeved and fixed on the inner pipe (1); The inner cavity of the inner pipe (1) is filled with water. The inner circular ring surface of the upper part of the pressure-receiving ring (4) cooperates with the outer circular ring surface of the inner pipe (1), and the outer circular ring surface of the upper part of the pressure-receiving ring (4) cooperates with the inner circular ring surface of the outer pipe (2). Compressed air is introduced between the circular inner pipe (1) and the circular outer pipe (2) to push the pressure-receiving ring (4); Compressed air is introduced between the inner pipe (1) and the outer pipe (2). When the pressure increases to a certain value, the upper end of the pressure-receiving ring (4) installed between the inner pipe (1) and the outer pipe (2) is pressed down under the action of the compressed air. At this time, the compressed air pressure and the water volume are the largest, and the spraying range is also the largest; When the compressed air pressure between the inner pipe (1) and the outer pipe (2) decreases to a certain value, the pressure-receiving ring (4) and the spring (6) stretch to reach a new balance. At this time, the compressed air pressure and the water volume are the smallest, and the spraying range is also the smallest.

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