CN211425815U - Multifunctional agricultural material suspension speed testing device - Google Patents

Abstract

The utility model relates to a multifunctional agricultural material suspension speed testing device, comprising at least one set of testing units; the testing unit comprises a collecting pipe, a rectifying pipe, a feeding pipe, a first steady-flow straight pipe and The tapered test tube; the first steady flow tube is provided with a first test hole vertically along the side of the tube wall; the tapered test tube is vertically provided with a second test hole along the side of the tube wall; the number of the first test holes is the same as the number of the first test holes. The number of two test holes is not less than 3, to ensure that the top side, middle and bottom side of the pipe wall are provided with at least one test hole correspondingly; A second steady flow straight tube is connected; the top of the second steady flow straight tube is connected with a diffuser cover; the first steady flow straight tube, the conical test tube and the second steady flow straight tube are all transparent tubes. The multifunctional agricultural material suspension speed testing device of the utility model can realize various tests on materials; the test is intuitive, can be observed clearly, and is convenient for the collection and analysis of test data.

Description

A multifunctional agricultural material suspension speed testing device

technical field

The utility model relates to the field of agricultural material suspension speed testing, in particular to a multifunctional agricultural material suspension speed testing device.

Background technique

The existing agricultural material suspension speed test device can measure the material suspension speed, but it has the following shortcomings:

1. There are few measurement holes, which is insufficient for researching and improving the uniformity of the wind speed of the test device.

2. Basically, only the suspension speed of the material can be measured, but it is not suitable to measure the separation wind speed of the mixed material.

3. It is inconvenient for more intuitive and clear observation, comparative research and analysis of the conveying and movement states of materials in fixed diameter pipes under different volume fractions.

Utility model content

In order to solve the above technical problems, the utility model provides a multifunctional agricultural material suspension speed test device, which can realize various tests on materials; the test is intuitive, can be observed clearly, and is convenient for the collection and analysis of test data.

The technical solution adopted by the utility model to solve the technical problem is as follows: a multi-functional agricultural material suspension speed test device, comprising at least one set of test units; the test unit comprises a collector tube, a rectifier tube, a feeding pipe, a first steady flow straight pipe and a conical test pipe; the first steady flow pipe is vertically provided with a first test hole along the side of the pipe wall; the conical test pipe is vertically arranged along the side of the pipe wall A second test hole is opened; the number of the first test hole and the number of the second test hole are not less than 3, ensuring that the top side, the middle and the bottom side of the pipe wall are correspondingly provided with at least one test hole The diameter of the conical test tube is small at the bottom and large at the top, and the top of the conical test tube is also connected with a second steady-flow straight tube; the top of the second steady-flow straight tube is connected with a diffuser; the first The steady-flow straight tube, the tapered test tube, and the second steady-flow straight tube are all transparent tubes.

Further, the tapered test tube is replaced with a test straight tube; the diffuser is connected to the top of the test straight tube; the test straight tube is also vertically provided with a second test hole along the side of the tube wall; the test straight tube is The number of the second test holes on the tube is also not less than 3, ensuring that at least one test hole is correspondingly provided on the top, middle and bottom sides of the tube wall; the test straight tube is also a transparent tube.

Further, the first test hole and the second test hole are used for connecting the Pitot tube anemometer, and the first test hole and the second test hole are blocked with rubber plugs when not in use.

Further, a rectifying grille is arranged in the rectifying tube.

Further, diffuser vanes are arranged in the diffuser cover, and a material retaining net is arranged below the diffuser vanes.

Further, the feeding pipe is provided with a feeding net; the side wall of the feeding pipe located above the feeding net is provided with a feeding port; the feeding pipe is also provided at the position of the feeding port There are material door and material door card slot; during the test, the material door is locked through the material door card groove to close the material inlet.

Further, the test device further includes a frame and a fan; the bottom surface of the collecting pipe is fixed on the frame; the frame is also fixed with a first flexible connecting pipe; the air outlet of the fan is connected with a second flexible connecting pipe. connecting pipe; the second flexible connecting pipe communicates with the first flexible connecting pipe.

Further, the test device includes multiple groups of test units, and the inner diameters of the pipes of different groups of test units are different; the first flexible connection pipes corresponding to the number of groups of the test units are fixed side by side on the rack; the plurality of first flexible connection pipes are Corresponding test unit header connections.

Further, the fan is driven by a frequency conversion motor; the testing device further includes a frequency conversion cabinet for controlling the frequency conversion motor.

Further, flanges are used to connect the pipes; silicone gaskets are placed between the connected flanges.

The multifunctional agricultural material suspension speed testing device of the utility model has the following advantages:

1. The conical test tube used is convenient to measure the suspension speed of single particle or particle group of household materials;

2. The test straight pipe used is convenient to observe the conveying and movement state of agricultural materials under the action of pneumatic force;

3. Multiple groups of test units are used, and the inner diameters of different groups of test units are different, which is convenient for observation, data measurement and comparative analysis of the transportation and motion status of agricultural materials under different volume fractions;

4. The design of the first test hole and the second test hole can measure the wind speed at different heights through the pitot tube anemometer. For the conical test tube, the wind speed of different sections can be measured to understand the uniformity of the flow field in the tube. At the same time, the first test hole on the lowermost side can measure the separation wind speed of the mixed material. Each test hole is equipped with a rubber plug. When the wind speed of a certain height section needs to be measured, open the corresponding rubber plug for testing. The design of the plug prevents the air leakage from the remaining test holes and affects the flow field in the test unit;

5. Each tube is connected by flanges, which is easy to disassemble and assemble. At the same time, silicone gaskets are arranged between the connected flanges, which play a role of sealing on the one hand, and vibration reduction on the other hand, and improve the stability of the overall test device;

6. The test unit is fixed on the rack, the first flexible connecting pipe is fixed on the bottom side of the collecting pipe of each test unit on the rack, and the second flexible connecting pipe is fixed on the fan, and a fan is used to pass through different test units. The first flexible connection pipe is connected with the second flexible connection pipe, which saves the number of fans, and at the same time, the flexible connection method makes the fan connection process more convenient;

7. The used rectifier tube is equipped with a rectifier grid, which can improve the uniformity of the flow field in the test unit tube;

8. The diffuser hood used together with the rectifier tube plays a rectifying role through the diffuser vanes to improve the uniformity of the flow field in the test unit.

8. Using fans, variable frequency motors and variable frequency cabinets, the flow field wind speed in the test unit can be adjusted according to different materials;

9. The overall structure is simple. The first steady-flow straight tube, the conical test tube, the second steady-flow straight tube, and the test straight tube are all transparent tubes. The test is intuitive and can be clearly observed, which is convenient for the collection and analysis of test data.

Description of drawings

1 is a schematic front view of a multifunctional agricultural material suspension speed testing device according to an embodiment;

2 is a schematic perspective view of a multifunctional agricultural material suspension speed testing device according to an embodiment;

3 is a left side schematic view of a multifunctional agricultural material suspension speed testing device according to an embodiment;

4 is a schematic diagram of a rectifier tube of a multifunctional agricultural material suspension speed testing device according to an embodiment;

FIG. 5 is a schematic diagram of a diffuser cover of a multifunctional agricultural material suspension velocity testing device according to an embodiment.

Detailed ways

In order to deepen the understanding of the present utility model, the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present utility model and do not limit the protection scope of the present utility model.

Example

As shown in FIG. 1 to FIG. 5 , this embodiment provides a multi-functional agricultural material suspension speed test device, which includes three groups of test units. The inner diameters of the three groups of test units are divided into small inner diameter test units, medium inner diameter test units, Large inner diameter test unit; all three groups of test units include a header 7, a rectifier tube 8, a feed tube 10, and a first steady flow straight tube 15 connected in sequence from bottom to top; the first steady flow tube 15 is along the tube wall A first test hole 16 is opened vertically on the side of the test unit; a conical test tube 19 is connected to the top of the first steady flow straight pipe 15 of the middle inner diameter test unit; the conical test tube 19 is vertically along the side of the pipe wall A second test hole 18 is opened; the number of the first test hole 16 and the second test hole 18 is not less than 3 to ensure that the top side, middle and bottom side of the pipe wall are all left with test holes. The diameter of the conical test tube 19 is small at the bottom and large at the top, and the top of the conical test tube 19 is also connected with a second steady flow straight tube 20; the top of the second steady flow straight tube 20 is connected with a diffuser hood 21; the A test straight pipe 26 is connected to the top of the first steady flow straight pipe 15 of the small inner diameter test unit and the large inner diameter test unit; the diffuser hood 21 is connected to the top of the test straight pipe 26; the test straight pipe 26 is also At least three second test holes 18 are vertically opened on the side of the wall to ensure that test holes are left on the top, middle and bottom sides of the pipe wall; the first steady flow straight pipe 15, the conical test pipe 19, the first Both the steady-flow straight pipe 20 and the test straight pipe 26 are transparent pipes.

As shown in FIG. 1 , in the multifunctional agricultural material suspension speed test device of the present embodiment, the first test holes of the first steady-flow straight pipe 15 are three, and the second test holes 18 of the tapered test pipe 19 are three. 5, and 7 second test holes 18 for testing the straight pipe.

In the multi-functional agricultural material suspension speed test device of this embodiment, the first test hole 16 and the second test hole 18 are used to connect the pitot tube anemometer 22, and the first test hole 16 and the second test hole 18 are not When in use, the rubber plug 17 is used to block; among them, the first test hole and the second test hole are used to measure the wind speed at different heights through a pitot tube anemometer. The uniformity of the flow field in the pipe, at the same time, the first test hole on the lowermost side can measure the separation wind speed of the mixed material. Each test hole is equipped with a rubber plug. When the wind speed of a certain height section needs to be measured, open the corresponding The rubber plug is used for testing. The design of the rubber plug can avoid the air leakage of the remaining test holes and affect the flow field in the test unit.

In the multi-functional agricultural material suspension speed testing device of this embodiment, the rectifier tube 8 is provided with a rectifier grid 23, which can improve the uniformity of the flow field in the test unit tube; wherein, the height of the rectifier grid is the grid spacing ≥ 25mm, which can reduce the resistance to the flow field in the pipeline.

In the multifunctional agricultural material suspension speed testing device of the present embodiment, the diffuser hood 21 is provided with diffuser blades 25, and a material blocking net 24 is arranged below the diffuser blades 25; The rectifier tubes work together to rectify and improve the uniformity of the flow field in the test unit. The spacing of the diffuser blades is greater than or equal to 25mm, which can reduce the resistance to the airflow; ≤8 mesh, can reduce the resistance to airflow.

In the multifunctional agricultural material suspension speed testing device of the present embodiment, the feeding pipe 10 is provided with a feeding net 9 ; The feeding port 13; the feeding pipe 10 is also provided with a feeding gate 11 and a feeding gate slot 12 at the position of the feeding port 13; during the test, the feeding gate 11 is locked by the feeding gate slot 12 to close the feeding port 13 .

In the multi-functional agricultural material suspension speed test device of this embodiment, three groups of test units are fixed side by side on the frame 6, and the bottom side is respectively connected with a first flexible connecting pipe 5; a fan is used to provide aerodynamic force for the three groups of test units, When in use, the fan 1 communicates with the first flexible connecting pipe 5 of the corresponding test unit through the second flexible connecting pipe 4; using one fan to connect different test units through the first flexible connecting pipe and the second flexible connecting pipe can save energy. The number of fans, and the soft connection method makes the fan connection process more convenient.

In a multifunctional agricultural material suspension speed test device of this embodiment, the fan 1 is driven by a frequency conversion motor 2; the test device further includes a frequency conversion cabinet 3 for controlling the frequency conversion motor 2; The flow field wind speed.

In the multi-functional agricultural material suspension speed testing device of this embodiment, flanges are used to connect each pipe; a silicone gasket 14 is placed between the connected flanges, and the flanges are connected to facilitate disassembly and assembly. At the same time, silicone pads are arranged between the connected flanges, which on the one hand play a sealing role, on the other hand play a vibration damping role, and improve the stability of the overall test device.

The specific working process of a multifunctional agricultural material suspension speed testing device of the present embodiment:

The first working method: when measuring the suspension speed of agricultural materials, select the medium inner diameter test unit, first place the material to be tested on the feeding net through the feeding port, close the feeding door and lock it, adjust the power frequency through the frequency conversion cabinet, change the The wind speed provided by the fan, after the materials are blown up and all enter the conical test tube, use the Pitot tube anemometer to measure the airflow speed at this time through the second test hole at the bottom of the conical test tube, that is, the suspension speed of the material ;

The second way of working: When studying the separation wind speed of mixed materials, select any group of test units to place the materials on the feeding net, adjust the power frequency, so that after the light materials are separated from the heavy materials, they will pass through the bottom of the steady flow pipe. The first test hole measures the wind speed required to realize the separation of the two materials;

The third working mode: when studying the uniformity of wind speed in the pipeline of the test system, the wind speed can be measured at different points of the lower section of each test hole, and then compared and analyzed;

The fourth working mode: when studying the flow characteristics of materials under the action of pneumatic force, the number of test units can be determined according to the needs. And the second stabilizer tube is replaced with a spare test straight tube, and then the materials are placed on the feeding nets of the three test units respectively, the power supply is turned on, the frequency of the power supply is adjusted through the frequency conversion cabinet, and the flow characteristics of the three test systems are observed, respectively. Wind speed measurement, with the help of high-speed camera and related software for high-speed photography and analysis;

The above working modes are only the reference provided by this embodiment, and other modes of testing can also be performed based on the testing device, which will not be repeated here.

The above embodiments should not limit the present invention in any way, and all technical solutions obtained by means of equivalent replacement or equivalent conversion fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a multi-functional agricultural material suspension speed testing arrangement which characterized in that: comprises at least one group of test units; the testing unit comprises a collecting pipe, a rectifying pipe, a feeding pipe, a first steady flow straight pipe and a conical testing pipe which are sequentially connected from bottom to top; the first flow stabilizing pipe is vertically provided with a first testing hole along the side surface of the pipe wall; the conical test tube is vertically provided with a second test hole along the side surface of the tube wall; the number of the first test holes and the number of the second test holes are not less than 3, and at least one test hole is correspondingly arranged on the top side, the middle side and the bottom side of the pipe wall; the diameter of the conical test tube is small at the bottom and large at the top, and the top of the conical test tube is also connected with a second steady flow straight tube; the top of the second steady flow straight pipe is connected with a flow dispersing cover; the first steady flow straight pipe, the conical test pipe and the second steady flow straight pipe are transparent pipes.

2. The multifunctional agricultural material suspension speed testing device according to claim 1, characterized in that: the conical test tube is replaced by a test straight tube; the flow dispersing cover is connected with the top of the test straight pipe; the test straight pipe is also vertically provided with a second test hole along the side surface of the pipe wall; the number of the second test holes on the test straight pipe is not less than 3, so that at least one test hole is correspondingly arranged on the top side, the middle side and the bottom side of the pipe wall; the test straight tube is also a transparent tube.

3. The multifunctional agricultural material suspension speed testing device according to claim 2, characterized in that: the first test hole and the second test hole are used for being connected with a pitot tube air speed gauge, and the first test hole and the second test hole are plugged by rubber plugs when not in use.

4. The multifunctional agricultural material suspension speed testing device according to claim 2, characterized in that: and a rectifying grid is arranged in the rectifying tube.

5. The multifunctional agricultural material suspension speed testing device according to claim 2, characterized in that: the flow dispersing cover is internally provided with flow dispersing blades, and a material blocking net is arranged below the flow dispersing blades.

6. The multifunctional agricultural material suspension speed testing device according to claim 2, characterized in that: a material placing net is arranged in the feeding pipe; a feed inlet is formed in the side wall of the feed pipe, which is positioned above the material placing net; a material door and a material door clamping groove are further formed in the position, at the feeding hole, of the feeding pipe; during testing, the material door is locked by the material door clamping groove to seal the feeding hole.

7. The multifunctional agricultural material suspension speed testing device according to any one of claims 1 to 6, wherein: the testing device also comprises a rack and a fan; the bottom surface of the collecting pipe is fixed on the frame; a first flexible connecting pipe is also fixed on the frame; an air outlet of the fan is connected with a second flexible connecting pipe; the second flexible connecting pipe is communicated with the first flexible connecting pipe.

8. The multifunctional agricultural material suspension speed testing device according to claim 7, characterized in that: the testing device comprises a plurality of groups of testing units, and the inner diameters of the pipes of the testing units in different groups are different; the rack is fixedly provided with a plurality of first flexible connecting pipes which are arranged in parallel and correspond to the testing units; the first flexible connecting pipes are connected with the collecting pipes of the corresponding testing units.

9. The multifunctional agricultural material suspension speed testing device according to claim 8, characterized in that: the fan is driven by a variable frequency motor; the testing device also comprises a frequency conversion cabinet which is used for controlling the variable frequency motor.

10. The multifunctional agricultural material suspension speed testing device according to claim 8 or 9, wherein: all the pipes are connected by flanges; and a silica gel sealing gasket is arranged between the connected flanges.

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