Sand washing device

Abstract

The sand washing device comprises a sand storage tank for storing sand grains, and a sand outlet is formed in the bottom of the sand storage tank; the feeding mechanism is communicated with the sand outlet; the top end of the sand discharging channel is communicated with the feeding barrel; the sand blowing channel is horizontally arranged, is communicated with the bottom end of the sand discharging channel, and is provided with a sand blasting opening for blasting sand grains; the blowing device can blow high-pressure gas into the sand blowing channel; the test bin is communicated with the sand blasting opening and is arranged in a closed mode, an adjusting platform capable of adjusting the height and / or the angle is arranged in the test bin, and the sand washing workpiece is installed on the adjusting platform. Sand grains in the sand storage tank sequentially pass through the feeding mechanism and the sand discharging channel and then enter the sand blowing channel, high-pressure gas blown out along with the blowing device in the sand blowing channel enters the test bin, a static workpiece is arranged in the test field, the height and the angle of the workpiece can be adjusted, and therefore a sand washing test is carried out in the static state of the workpiece; the problems in the prior art are solved.

Description

Technical Field

[0001] The invention relates to a sand flushing device. Background Art

[0002] UAVs may encounter dusty environments during flight, so it is necessary to determine the tolerance of UAVs, especially impellers, to sand particles carried by wind or airflow during flight. The existing technology lacks corresponding test equipment. Summary of the invention

[0003] The purpose of the invention is to provide a sand blasting test bench capable of simulating a sand and dust environment.

[0004] In order to solve the above problems, the present invention provides a sand washing device, which is characterized by comprising:

[0005] A sand storage tank storing sand particles, wherein a sand outlet is provided at the bottom of the sand storage tank;

[0006] A feeding mechanism connected to the sand outlet, the feeding mechanism comprising a cylindrical, horizontally arranged feeding cylinder, and a feeding shaft located in the feeding cylinder, the feeding shaft is provided with an external thread, the sand grains are transmitted between the thread line and the inside of the feeding cylinder, and the feeding shaft is also provided with a driving mechanism for driving the rotation thereof;

[0007] A sand discharging channel connected to the feeding tube at the top, wherein the sand discharging channel is a pipe-like structure and is vertically arranged;

[0008] A horizontally arranged sand blowing channel, the sand blowing channel is connected to the bottom end of the sand lowering channel and is provided with a sand blasting port for spraying sand particles;

[0009] A blowing device capable of blowing high-pressure gas into the sand blowing channel;

[0010] A closed test chamber is connected to the sandblasting port, wherein an adjustable platform with adjustable height and / or angle is provided in the test chamber, and the sandblasting workpiece is mounted on the adjustable platform.

[0011] As a further improvement of the present invention, the sand blowing channel has:

[0012] A first pipeline communicated with the sand discharge channel;

[0013] a second pipeline connected to the first pipeline, the second pipeline being located behind the first pipeline;

[0014] A nozzle connected to the second pipeline, the nozzle is connected to the test chamber, and the diameter of the second pipeline is larger than the diameters of the first pipeline and the nozzle.

[0015] As a further improvement of the present invention, the nozzle is provided with a transition section, a contraction section, a throat and an expansion section in sequence from front to back, wherein:

[0016] The transition section is in communication with the second pipe and has the same inner diameter;

[0017] The contraction section is a trumpet-shaped structure that is wide at the front and narrow at the back;

[0018] The contraction section is connected to the contraction section and the expansion section, the inner cavity of the contraction section is cylindrical or trumpet-shaped with a narrow front and a wide rear, and the angle between the cavity wall and the horizontal line is less than or equal to 10°;

[0019] The expansion section is in the shape of a trumpet that is narrow at the front and wide at the back, and the angle between the cavity wall and the horizontal line is equal to 10°.

[0020] As a further improvement of the present invention, the driving mechanism includes a motor and a reducer connected to the motor, and the output shaft of the reducer is drivingly connected to the feeding shaft.

[0021] As a further improvement of the present invention, the blowing device includes an air pump and a blowing pipe, and the blowing pipe is connected to the first pipeline.

[0022] As a further improvement of the present invention, the air blowing pipe is connected to the sand storage tank through a bypass pipe, and a balancing valve and a pressure gauge close to the sand storage tank are provided on the bypass pipe. The pressure gauge can control the opening and closing of the balancing valve, thereby adjusting the gas pressure value flowing into the sand storage tank.

[0023] The beneficial effect of the present invention lies in that, in the present invention, the sand particles in the sand storage tank enter the sand blowing channel after passing through the feeding mechanism and the sand discharge channel in sequence, and enter the test chamber in the sand blowing channel along with the high-pressure gas blown out by the blowing device. A stationary workpiece is arranged in the test field, and the height and angle of the workpiece are adjustable, thereby realizing the sand blasting test when the workpiece is in a stationary state, and solving the problems encountered in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the nozzle in the present invention;

[0026] In the figure: 102-sand storage tank; 104-feeding barrel; 106-feeding shaft; 108-sand discharging channel; 110-sand blowing channel; 114-test chamber; 116-adjusting platform; 1002-first pipeline; 1004-second pipeline; 1006-nozzle; 1022-transition section; 1024-contraction section; 1026-throat; 1028-expansion section; 120-motor; 122-reducer. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] like Figure 1 As shown, the present invention includes a sand storage tank 102 storing sand particles, and a sand outlet is provided at the bottom of the sand storage tank 102;

[0029] A feeding mechanism connected to the sand outlet, the feeding mechanism comprising a cylindrical, horizontally arranged feeding cylinder 104, and a feeding shaft 106 located in the feeding cylinder 104, the feeding shaft 106 is provided with an external thread, the sand particles are transmitted between the thread line and the inside of the feeding cylinder 104, and the feeding shaft 106 is also provided with a driving mechanism for driving the rotation thereof;

[0030] A sand discharging channel 108 connected to the feeding tube 104 at the top, wherein the sand discharging channel 108 is a pipe-like structure and is vertically arranged;

[0031] A horizontally arranged sand blowing channel 110, wherein the sand blowing channel 110 is connected to the bottom end of the sand lowering channel 108 and is provided with a sand blasting port for spraying sand particles;

[0032] A blowing device capable of blowing high-pressure gas into the sand blowing channel 110;

[0033] A test chamber 114 is connected to the sandblasting port and is closed. An adjustment platform 116 with adjustable height and / or angle is provided in the test chamber 114 , and the sandblasting workpiece is mounted on the adjustment platform 116 .

[0034] In this embodiment, the sand particles in the sand storage tank 102 pass through the feeding mechanism and the sand discharge channel 108 in sequence and then enter the sand blowing channel 110. In the sand blowing channel 110, the sand particles enter the test chamber 114 along with the high-pressure gas blown out by the blowing device. A stationary workpiece is provided in the test field, and the height and angle of the workpiece are adjustable, thereby realizing a sand blasting test when the workpiece is in a stationary state, and solving the problems encountered in the prior art.

[0035] As a further improvement of the present invention, the sand blowing channel 110 has:

[0036] A first pipe 1002 communicating with the sand discharge channel 108;

[0037] a second pipe 1004 communicating with the first pipe 1002, wherein the second pipe 1004 is located behind the first pipe 1002;

[0038] The nozzle 1006 is connected to the second pipeline 1004 , and the nozzle 1006 is connected to the test chamber 114 . The diameter of the second pipeline 1004 is greater than the diameters of the first pipeline 1002 and the nozzle 1006 .

[0039] A second pipeline 1004 is provided, and the diameter of the second pipeline 1004 is larger than that of the first pipeline 1002 and the second pipeline 1004 , so as to facilitate sufficient mixing of sand particles with gas in the second pipeline 1004 .

[0040] As a further improvement of the present invention, the nozzle 1006 is provided with a transition section, a contraction section, a throat and an expansion section from front to back, wherein:

[0041] The transition section is in communication with the second pipe 1004 and has the same inner diameter;

[0042] The contraction section is a trumpet-shaped structure that is wide at the front and narrow at the back;

[0043] The contraction section is connected to the contraction section and the expansion section, the inner cavity of the contraction section is cylindrical or trumpet-shaped with a narrow front and a wide rear, and the angle between the cavity wall and the horizontal line is less than or equal to 10°;

[0044] The expansion section is in the shape of a trumpet that is narrow at the front and wide at the back, and the angle between the cavity wall and the horizontal line is equal to 10°.

[0045] With the above structure, the sand particles can be accelerated to a speed of more than 300 m / s.

[0046] As a further improvement of the present invention, the driving mechanism includes a motor 120 and a reducer 122 connected to the motor 120 , and the output shaft of the reducer 122 is drivingly connected to the feeding shaft 106 .

[0047] The motor 120 and the reducer 122 are connected to the feeding shaft 106 to achieve uniform feeding.

[0048] As a further improvement of the present invention, the blowing device includes an air pump and a blowing pipe, and the blowing pipe is connected to the first pipeline 1002.

[0049] The air pump and the air inflation tube can be used to effectively and quickly inflate the first pipeline 1002 .

[0050] As a further improvement of the present invention, the air blowing pipe is connected to the sand storage tank 102 through a bypass pipe, and a balancing valve and a pressure gauge close to the sand storage tank 102 are provided on the bypass pipe. The pressure gauge can control the opening and closing of the balancing valve, thereby adjusting the gas pressure value flowing into the sand storage tank 102.

[0051] The purpose of setting a bypass pipe is to ensure that the air pressure in the sand storage tank 102 is not less than the air pressure in the sand blowing channel 110. When the pressure gauge identifies that its pressure is less than the air pressure in the sand blowing channel 110, the balancing valve is controlled to adjust the valve core to make the valve core air outlet smaller, thereby increasing the air pressure in the bypass pipe, so that the sand storage tank 102 can discharge sand normally.

[0052] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A sand washing device, characterized in that: include: A sand storage tank (102) storing sand particles, wherein a sand outlet is provided at the bottom of the sand storage tank (102); A feeding mechanism connected to the sand outlet, the feeding mechanism comprising a cylindrical, horizontally arranged feeding cylinder (104), and a feeding shaft (106) located in the feeding cylinder (104), the feeding shaft (106) being provided with an external thread, the sand grains being transmitted between the thread line and the inside of the feeding cylinder (104), and the feeding shaft (106) being further provided with a driving mechanism for driving the feeding shaft (106) to rotate; A sand discharging channel (108) connected to the feeding tube (104) at the top, wherein the sand discharging channel (108) is a pipe-like structure and is vertically arranged; A horizontally arranged sand blowing channel (110), the sand blowing channel (110) is connected to the bottom end of the lower sand channel (108) and is provided with a sand blasting port for blasting sand particles; A blowing device capable of blowing high-pressure gas into the sand blowing channel (110); A test chamber (114) is connected to the sandblasting port and is arranged in a closed manner. An adjustment platform (116) with adjustable height and / or angle is arranged in the test chamber (114). The sandblasting workpiece is mounted on the adjustment platform (116).

2. A sand washing device according to claim 1, characterized in that: The sand blowing channel (110) has: A first pipe (1002) in communication with the sand discharge channel (108); a second pipe (1004) in communication with the first pipe (1002), wherein the second pipe (1004) is located behind the first pipe (1002); A nozzle (1006) is connected to the second pipe (1004), and the nozzle (1006) is connected to the test chamber (114). The diameter of the second pipe (1004) is larger than the diameters of the first pipe (1002) and the nozzle (1006).

3. A sand flushing device according to claim 2, characterized in that: The nozzle (1006) is provided with a transition section (1022), a contraction section (1024), a throat (1026) and an expansion section (1028) in sequence from front to back, wherein: The transition section (1022) is in communication with the second pipe (1004) and has the same inner diameter; The contraction section (1024) is a trumpet-shaped structure that is wide at the front and narrow at the back; The contraction section (1024) is connected to the expansion section (1028); the inner cavity of the contraction section (1024) is cylindrical or trumpet-shaped with a narrow front and a wide rear, and the angle between the cavity wall and the horizontal line is less than or equal to 10°; The expansion section (1028) is in the shape of a trumpet that is narrow in the front and wide in the back, and the angle between its cavity wall and the horizontal line is equal to 10°.

4. A sand flushing device according to claim 3, characterized in that: The driving mechanism comprises a motor (120) and a reducer (122) connected to the motor (120), and an output shaft of the reducer (122) is drivingly connected to the feeding shaft (106).

5. A sand washing device according to claim 4, characterized in that: The blowing device comprises an air pump and a blowing pipe, and the blowing pipe is connected to the first pipeline (1002).

6. A sand flushing device according to claim 5, characterized in that: The air blowing pipe is connected to the sand storage tank (102) via a bypass pipe, and a balancing valve and a pressure gauge close to the sand storage tank (102) are provided on the bypass pipe. The pressure gauge can control the opening and closing of the balancing valve, thereby adjusting the pressure value of the gas flowing into the sand storage tank (102).

Images