Silkworm cocoon porosity testing device and method

Abstract

The invention discloses a silkworm cocoon porosity testing device and method, and relates to the technical field of textile material detection. The device comprises a fixed support, the inner wall of the fixed support is fixedly connected with a test cylinder, the top of a transverse plate of the fixed support is fixedly connected with a recoverer, the outer wall of the test cylinder is fixedly connected with an ultrasonic oscillator, and the outer wall of the test cylinder is fixedly connected with a water return pipe. Through cooperation of the test cylinder, the water return pipe, the recoverer, an ultrasonic oscillator, a first motor, a first threaded rod, an L-shaped plate, a first threaded sleeve, a connecting plate, a moving block, a vertical rod, a placement disc, a first spring, an L-shaped short plate, a concentric-square-shaped block, a first arc block, an L-shaped long plate and a second arc block, a silkworm cocoon sample box shakes back and forth and is matched with a cavitation effect formed by high-frequency mechanical oscillation generated by ultrasonic waves; the silk on the silkworm cocoons and the distilled water can be wetted and permeated more quickly and fully, so that the reaction rate of the silk on the wet silkworm cocoons and the distilled water is increased.

Description

Technical Field

[0001] The invention relates to the technical field of textile material detection, and in particular to a silkworm cocoon porosity testing device and method. Background Art

[0002] Porosity refers to the percentage of the pore volume in a porous material to the total volume of the material in its natural state. It is a dimensionless value between 1 and 0. The pores in the cocoon mainly include the capillary pores formed by the interconnection of fibers, sericin, and calcium oxalate in the cocoon layer, as well as the space gaps formed by the connection of fibers between the cocoon layers. These pores mainly include closed pores, blind holes, and connected pores. Water or water vapor cannot enter the closed pores. The capillary connected pores with too small pore size have little effect on water storage and moisture conduction. Blind holes can only store water but not moisture, and have no contribution to moisture permeability. The blind holes and connected pores formed in the cocoon layer are defined as effective pores, and other pores are defined as invalid pores. The effective pores and invalid pores are collectively called full pores.

[0003] However, the current cocoon porosity testing device has the following problems: the current testing device is difficult to make the silk on the cocoon and the distilled water wet and penetrate more quickly and fully, thereby reducing the reaction rate of the silk on the wet cocoon and the distilled water. Therefore, we propose a cocoon porosity testing device and method. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a cocoon porosity testing device and method, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cocoon porosity testing device, comprising a fixed bracket, the inner wall of the fixed bracket is fixedly connected to a testing cylinder, the top of the horizontal plate of the fixed bracket is fixedly connected to a collector, the outer wall of the testing cylinder is fixedly connected to an ultrasonic oscillator, the outer wall of the testing cylinder is fixedly connected to a water return pipe, the end of the water return pipe away from the testing cylinder is fixedly connected to the outer wall of the collector, the bottom of the upper circular frame of the fixed bracket is fixedly connected to a motor 1, the output shaft of the motor 1 is fixedly connected to a threaded rod 1, the top of the fixed bracket is fixedly connected to an L-shaped plate, the top of the threaded rod 1 is rotatably connected to the top of the inner wall of the L-shaped plate, the outer wall of the threaded rod 1 is threadedly connected to a threaded sleeve 1, the side of the threaded sleeve 1 is fixedly connected to a connecting plate, the inner wall of the connecting plate is slidably connected to a moving block, and the top of the moving block is fixedly connected to a vertical The lever is actuated by a spring which is adapted to move the threaded rod and the connecting plate together so that the threaded rod can move relative to the connecting plate. The lever is actuated by a spring which is adapted to move the threaded rod and the connecting plate together so that the threaded rod can move relative to the connecting plate. The lever is actuated by a spring which is adapted to move the threaded rod and the connecting plate together so that the threaded rod can move relative to the connecting plate.

[0006] According to the above technical solution, the outer wall of the vertical rod is fixedly connected with a connecting short plate, the side of the connecting short plate is fixedly connected with a fixing ring, the bottom of the fixing ring is fixedly connected with a plurality of pushing plates, the bottoms of the plurality of pushing plates are parallel to the bottom of the placement plate, the back-and-forth movement of the vertical rod drives the connecting short plate to move back and forth, the back-and-forth movement of the connecting short plate drives the fixing ring to move back and forth, the back-and-forth movement of the fixing ring drives the pushing plate to move back and forth, and the back-and-forth movement of the pushing plate can send the distilled water around the inside of the test cylinder toward the sample box close to the silkworm cocoon.

[0007] According to the above technical solution, an anti-damage device is provided at the bottom of the placement plate, and the anti-damage device includes a protective shell, the inner wall of the protective shell is fixedly connected with a dual-axis motor, and the two output shafts of the dual-axis motor are fixedly connected with threaded rods 2, and the inner walls on both sides of the placement plate are fixedly connected with limit plates, and the ends of the two threaded rods 2 away from the dual-axis motor are rotatably connected to the sides of the two limit plates, and the outer walls of the two threaded rods 2 are threadedly connected with threaded sleeves 2, and the top of the threaded sleeves 2 is fixedly connected with a fixed plate, and a U-shaped rod passes through and slides on the side of the fixed plate, and the two ends of the U-shaped rod are fixedly connected with the same push plate, and a spring 2 is provided between the push plate and the fixed plate, and the push plate is hinged with a hinged rod at one side of the fixed plate, and the end of the hinged rod away from the push plate is hinged with a slider, and the side of the slider is slidably connected to the side of the fixed plate, and the top of the slider is fixedly connected with a long plate, and the top of the placement plate is fixedly connected with an L-shaped long block, and the side of the L-shaped long block A long plate is fixedly connected, the top of the long plate is set as a rough surface, and the bottom of the long plate is set as a rough surface. The rough surface of the long plate is located on the movement trajectory of the rough surface of the long plate. After the sample box containing silk cocoons is placed on the surface of the placing plate, the double-axis motor is started, and the two output shafts of the double-axis motor cause the two threaded rods to rotate. The rotation of the two threaded rods causes the two threaded sleeves to move in the direction of the sample box of the silk cocoons. The movement of the two threaded sleeves drives the fixed plate to move, and the movement of the fixed plate drives the U-shaped rod to move, and the movement of the U-shaped rod drives the push plate to move. The movement of the push plate will first resist the sample box of the silk cocoon. Under the reaction force of the sample box of the silk cocoon, the push plate will stop moving. Due to the continued movement of the fixed plate, the push plate will push the slider to move upward on the surface of the fixed plate through the hinged rod, and the upward movement of the slider drives the long plate to move upward. When the rough surface of the long plate moves upward and contacts with the rough surface of the long plate, the resistance between the long plate and the long plate increases.

[0008] According to the above technical solution, the bottom of the inner wall of the push plate is rotatably connected to two rotating columns, and a rubber belt is transmission-connected between the two rotating columns. The bottom of the inner wall of the push plate is fixedly connected to a resistance plate, and the top of the rotating column located on one side of the L-shaped long block is fixedly connected to a rotating wheel, and the top of the rotating wheel is fixedly connected to a one-way bearing. The side of the L-shaped long block is fixedly connected to a placement plate, and the outer wall of the rotating wheel is set as a rough surface, and the side of the placement plate is set as a rough surface. The outer wall of the rotating wheel contacts the side of the placement plate, and the side of the resistance plate contacts the inner wall of the rubber belt. In the process of clamping the cocoon sample box by the push plate each time, the push plate passes through The rotating column drives the rotating wheel to move synchronously. Under the action of the friction force between the rough surface of the rotating wheel and the rough surface of the placing plate, the rotating wheel drives one of the rotating columns to rotate. When the rotating column rotates, it will make the other rotating column rotate synchronously through the rubber belt. Every time the push plate is opened, the push plate drives the rotating wheel to move in the opposite direction synchronously through the rotating column. Since the rotating wheel is restricted by the one-way bearing, the rotating wheel will not drive the rubber belt to rotate through the rotating column. Therefore, there is a slipping state between the rotating wheel and the placing plate at this time, and this reciprocating process ensures that the rubber belt can rotate once each time the cocoon sample box is clamped, thereby changing the contact surface of the rubber belt with the cocoon sample box.

[0009] A method for testing the porosity of silkworm cocoons comprises the following steps:

[0010] S1. The cocoon shell to be tested is dried and weighed (denoted as M0, in g), and placed in a metal sample box. The sample box is hollowed out, and the volume is known to be 5.45 ml, denoted as V0, in ml. The electronic balance is turned on to keep it in a stable test state;

[0011] S2. Distilled water is injected into the test cylinder until water overflows from the return pipe. The overflowed water flows into the recovery device through the return pipe. When the water in the recovery device becomes still, the electronic balance is cleared or peeled, and the sample box containing the cocoons is placed on the surface of the placement plate;

[0012] S3, then start the motor 1, the output shaft of the motor 1 rotates the threaded rod 1, the rotation of the threaded rod 1 causes the threaded sleeve 1 to move toward the test tube, the movement of the threaded sleeve 1 drives the connecting plate, the moving block, the vertical rod, and the placement plate to move, and finally the placement plate drives the sample box with the cocoon to slowly immerse (t≤3s) for testing;

[0013] S4. At this time, some distilled water in the test tube flows out from the return pipe into the recovery device. At this time, the electronic balance is stable and displays M1 (g). The density of water is ρ1 (g·cm -3 ), then the volume of the cocoon sample

[0014] S5. Then turn on the ultrasonic oscillator, control the ultrasonic frequency at 20-40kHZ, and the power at 1kW. The high-frequency mechanical oscillation generated by the ultrasonic wave forms a "cavitation" effect, which makes the silk on the cocoons in the sample box quickly and fully wetted and penetrated by the distilled water, and the air between the pores of the silk fibers is quickly discharged. At this time, the distilled water level in the test tube is lower than the lower tube surface of the connection between the return pipe and the test tube. Use a pipette or dropper to transfer part of the distilled water in the recovery device to the test tube until distilled water flows out of the return pipe again. Wait for the distilled water in the recovery device to be still, and then read the value after the electronic balance is stable, which is recorded as M2 (g).

[0015] The present invention provides a cocoon porosity testing device and method, which have the following beneficial effects:

[0016] (1) The present invention cooperates with a test tube, a return pipe, a collector, an ultrasonic oscillator, a motor, a threaded rod, an L-shaped plate, a threaded sleeve, a connecting plate, a moving block, a vertical rod, a placement plate, a spring, an L-shaped short plate, a circular block, an arc block, an L-shaped long plate, and an arc block, so that the sample box of the silkworm cocoon is shaken back and forth and the high-frequency mechanical oscillation generated by the ultrasonic wave forms a "cavitation" effect, which can make the silk on the silkworm cocoon and the distilled water more quickly and fully wet and penetrate, thereby improving the reaction rate of the silk on the wet silkworm cocoon and the distilled water.

[0017] (2) The present invention cooperates with spring 1, L-shaped short plate, round block, arc block 1, L-shaped long plate, arc block 2, connecting short plate, fixed ring and pushing plate to make the connecting short plate move back and forth, thereby driving the fixed ring to move back and forth, and the fixed ring to move back and forth drives the pushing plate to move back and forth. The back and forth movement of the pushing plate can send the distilled water around the inside of the test tube toward the direction of the sample box close to the cocoon, thereby avoiding the problem that the sample box close to the cocoon is saturated with distilled water and the distilled water around reacts slowly.

[0018] (3) The present invention cooperates with a dual-axis motor, a second threaded rod, a limit plate, a second threaded sleeve, and a fixed plate so that the movement of the two second threaded sleeves drives the fixed plates to move. The two fixed plates will fix the cocoon sample box, thereby preventing the cocoon sample box from moving inside the test tube. At the same time, through the cooperation of the U-shaped rod, the push plate, the second spring, the hinged rod, the slider, the long plate, and the L-shaped long block, when the rough surface of the long plate moves upward and contacts the rough surface of the long plate, the resistance between the long plate and the long plate increases. The increase in resistance makes it difficult for the fixed plate to move toward the direction of the cocoon sample box, thereby avoiding the problem of damage to the cocoon sample box due to excessive clamping force. At the same time, through the cooperation of the long plate, the rotating column, the rubber belt, the resistance plate, the rotating wheel, the one-way bearing, and the placement plate, the rubber belt can be rotated once, thereby changing the contact surface of the rubber belt with the cocoon sample box, thereby avoiding the problem that the rubber belt repeatedly contacts the cocoon sample box for a long time, the surface of the rubber belt gradually wears and becomes smooth, and affects the clamping effect of the rubber belt on the cocoon sample box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the present invention as a whole;

[0020] Figure 2 This is a schematic diagram of the structure of the L-shaped plate of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a motor of the present invention;

[0022] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at A in the middle;

[0023] Figure 5 This is a schematic diagram of the second structure of the arc block of the present invention;

[0024] Figure 6 This is a structural schematic diagram of the dual-axis motor of the present invention;

[0025] Figure 7 This is a structural schematic diagram of the vertical rod of the present invention;

[0026] Figure 8 The structure of the anti-damage device of the present invention is shown in FIG. Figure 1 ;

[0027] Fig. 9 The structure of the anti-damage device of the present invention is shown in FIG. Figure 2 ;

[0028] Fig.10 The structure of the anti-damage device of the present invention is shown in FIG. Figure 3 .

[0029] In the figure: 1, fixed bracket; 2, test tube; 3, return pipe; 4, recovery device; 5, ultrasonic oscillator; 6, motor 1; 7, threaded rod 1; 8, L-shaped plate; 10, threaded sleeve 1; 11, connecting plate; 12, moving block; 13, vertical rod; 14, placing plate; 15, spring 1; 16, L-shaped short plate; 17, circular block; 18, arc block 1; 19, L-shaped long plate; 20, arc block 2; 21, connecting short plate; 22, fixing ring; 23, pushing plate; 9 , anti-damage device; 91, protective shell; 92, dual-axis motor; 93, threaded rod two; 94, limit plate; 95, threaded sleeve two; 96, fixed plate; 97, U-shaped rod; 98, push plate; 99, spring two; 910, hinged rod; 911, slider; 912, long block; 913, L-shaped long block; 914, long plate; 915, rotating column; 916, rubber belt; 917, resistance plate; 918, rotating wheel; 919, one-way bearing; 920, placement plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See also Figure 1 - Fig.10, one embodiment of the present invention is: a cocoon porosity testing device and method, comprising a fixed bracket 1, the inner wall of the fixed bracket 1 is fixedly connected with a testing cylinder 2, the top of the horizontal plate of the fixed bracket 1 is fixedly connected with a collector 4, the outer wall of the testing cylinder 2 is fixedly connected with an ultrasonic oscillator 5, the outer wall of the testing cylinder 2 is fixedly connected with a return pipe 3, the end of the return pipe 3 away from the testing cylinder 2 is fixedly connected to the outer wall of the collector 4, the bottom of the upper round frame of the fixed bracket 1 is fixedly connected with a motor 6, the output shaft of the motor 6 is fixedly connected with a threaded rod 7, the top of the fixed bracket 1 is fixedly connected with an L-shaped plate 8, the top of the threaded rod 7 is rotatably connected to the top of the inner wall of the L-shaped plate 8, the outer wall of the threaded rod 7 is threadedly connected with a threaded sleeve 10, the side of the threaded sleeve 10 is fixedly connected with a connecting plate 11, the inner wall of the connecting plate 11 is slidably connected with a moving block 12, the top of the moving block 12 is fixedly connected with a vertical rod 13, the vertical rod 13 The bottom of the movable block 12 is fixedly connected with a placing plate 14, a spring 15 is arranged between the moving block 12 and the connecting plate 11, the bottom of the moving block 12 is fixedly connected with an L-shaped short plate 16, the side of the L-shaped short plate 16 is fixedly connected with a round block 17, the side of the round block 17 is fixedly connected with an arc block 18, the side of the L-shaped plate 8 is fixedly connected with an L-shaped long plate 19, the inner wall of the L-shaped long plate 19 is fixedly connected with a plurality of arc blocks 20, the side of the threaded sleeve 10 is in contact with the inner wall of the L-shaped plate 8, and the plurality of arc blocks 20 are located on the displacement track of the arc block 18. Through the arrangement of the above structure, the reciprocating movement of the placing plate 14 drives the sample box of the silk cocoon to swing back and forth, so that the back and forth swinging of the sample box of the silk cocoon and the high-frequency mechanical oscillation generated by the ultrasonic wave form a "cavitation" effect, which can make the silk on the silk cocoon and the distilled water more quickly and fully wetted and penetrated, thereby improving the reaction rate of the silk on the wet silk cocoon and the distilled water.

[0032] The outer wall of the vertical rod 13 is fixedly connected with a connecting short plate 21, the side of the connecting short plate 21 is fixedly connected with a fixing ring 22, the bottom of the fixing ring 22 is fixedly connected with a plurality of pushing plates 23, the bottoms of the plurality of pushing plates 23 are parallel to the bottom of the placing plate 14, through the setting of the above structure, the back and forth movement of the pushing plate 23 can send the distilled water around the inside of the test tube 2 toward the direction of the sample box close to the cocoon, thereby avoiding the problem that the sample box close to the cocoon is saturated with distilled water and the distilled water around reacts slowly.

[0033] When in use, the cocoon shell to be tested is dried, weighed (recorded as M0, in g), and placed in a metal sample box. The sample box is hollowed out, and the volume is known to be 5.45 ml, recorded as V0, in ml. The electronic balance is turned on to make it in a stable test state. This is a prior art, which is the same as the weighing of existing products. Distilled water is injected into the test cylinder 2 until water overflows from the return pipe 3. A small amount of overflowed water flows into the recovery device 4 through the return pipe 3. When the water in the recovery device 4 is still, the electronic balance is cleared or peeled, and the sample box containing the cocoons is placed on the placement tray 14. Then, the motor 6 is started. The output shaft of the motor 6 rotates the threaded rod 7. The rotation of the threaded rod 7 causes the threaded sleeve 10 to move toward the test cylinder 2. The movement of the threaded sleeve 10 drives the connecting plate 11, the moving block 12, the vertical rod 13, and the placement plate 14 to move. Finally, the placement plate 14 drives the sample box with the cocoon to slowly immerse (t≤3s) into the test cylinder 2. At this time, some distilled water in the test cylinder flows out from the return pipe 3 into the recovery device 4. At this time, the electronic balance is stable and displays M1 (g). The density of water ρ is 1 (g·cm -3 ), then the volume of the cocoon sample This is the prior art, combined with Archimedes' principle, and then turn on the ultrasonic oscillator 5, the ultrasonic frequency is controlled at 20-40kHZ, the power is 1kW, and the high-frequency mechanical oscillation generated by the ultrasonic wave forms a "cavitation" effect, so that the silk on the cocoon in the sample box is quickly and fully wetted and penetrated by the distilled water, and the air between the pores of the silk fibers is quickly discharged. At this time, the distilled water level in the test cylinder is lower than the lower tube surface of the connection port between the return pipe 3 and the test cylinder 2. Use a pipette or dropper to transfer part of the distilled water in the recovery device to the test 2 until distilled water flows out of the return pipe 3 again. Wait for the distilled water in the recovery device 4 to be still, and read the electronic balance after it is stable, recorded as M2 (g), then the volume of the silk fiber in the cocoon and V f for: Pore ​​volume and V in silkworm cocoons k for: The effective porosity of the cocoon is: When the moving block 12 moves downward, it drives the L-shaped short plate 16 to move downward, and the L-shaped short plate 16 moves downward, driving the circular block 17 to move downward, and the circular block 17 moves downward, driving the arc block 18 to move, and the movement of the arc block 18 will conflict with the arc block 20, so that the arc block 18 moves in the direction of the threaded sleeve 10, and the movement of the threaded sleeve 10 drives the circular block 17, the L-shaped short plate 16 and the moving block 12 to move, and the movement of the moving block 12 will squeeze the spring 15, and when the movement of the arc block 18 does not conflict with the arc block 20, the spring 15 will reset by its own elastic force, and the reset of the spring 15 drives the circular block 17, the arc block 18, the L-shaped short plate 16 and the moving block 12 to reset, and so on, so that the circular block 17, the arc block 18, the L-shaped short plate 16 and the moving block 12 reciprocate The reciprocating motion of the moving block 12 drives the placing plate 14 to reciprocate through the vertical rod 13, and the reciprocating motion of the placing plate 14 drives the sample box of the cocoon to swing back and forth, so that the back and forth swinging of the sample box of the cocoon and the high-frequency mechanical oscillation generated by the ultrasonic wave form a "cavitation" effect, which can make the silk on the cocoon and the distilled water more quickly and fully wetted and penetrated, thereby improving the reaction rate of the silk on the wet cocoon and the distilled water; the back and forth movement of the vertical rod 13 drives the connecting short plate 21 to move back and forth, the back and forth movement of the connecting short plate 21 drives the fixing ring 22 to move back and forth, and the back and forth movement of the fixing ring 22 drives the pushing plate 23 to move back and forth, and the back and forth movement of the pushing plate 23 can send the distilled water around the inside of the test tube 2 to the direction of the sample box close to the cocoon, thereby avoiding the problem that the sample box close to the cocoon is saturated with distilled water and the distilled water around reacts slowly.

[0034] See also Figure 1 - Fig.10On the basis of the above embodiment, in another embodiment of the present invention, an anti-damage device 9 is provided at the bottom of the placement plate 14, and the anti-damage device 9 includes a protective shell 91, and the inner wall of the protective shell 91 is fixedly connected with a dual-axis motor 92, and the two output shafts of the dual-axis motor 92 are fixedly connected with threaded rods 93, and the inner walls on both sides of the placement plate 14 are fixedly connected with limit plates 94, and the ends of the two threaded rods 93 away from the dual-axis motor 92 are rotatably connected to the sides of the two limit plates 94, and the outer walls of the two threaded rods 93 are threadedly connected with threaded sleeves 95, and the top of the threaded sleeves 95 is fixedly connected with a fixed plate 96, and the side of the fixed plate 96 is penetrated and slidably provided with a U-shaped rod 97, and the two ends of the U-shaped rod 97 are fixedly connected with the same push plate 98, and a spring 99 is provided between the push plate 98 and the fixed plate 96, and the push plate 98 is located on one side of the fixed plate 96 and is hinged with a hinged rod 910 The end of the hinged rod 910 away from the push plate 98 is hinged with a slider 911, and the side of the slider 911 is slidably connected to the side of the fixed plate 96. The top of the slider 911 is fixedly connected to a long plate 912, and the top of the placement plate 14 is fixedly connected to an L-shaped long block 913, and the side of the L-shaped long block 913 is fixedly connected to a long plate 914. The top of the long plate 912 is set as a rough surface, and the bottom of the long plate 914 is set as a rough surface. The rough surface of the long plate 914 is located on the movement trajectory of the rough surface of the long plate 912. Through the setting of the above structure, when the rough surface of the long plate 912 moves upward and contacts with the rough surface of the long plate 914, the resistance between the long plate 912 and the long plate 914 increases. The increase in resistance will make it difficult for the fixed plate 96 to move in the direction of the cocoon sample box, thereby avoiding the problem of damage to the cocoon sample box due to excessive clamping force.

[0035] Two rotating columns 915 are rotatably connected to the bottom of the inner wall of the push plate 98, and a rubber belt 916 is transmission-connected between the two rotating columns 915. A resistance plate 917 is fixedly connected to the bottom of the inner wall of the push plate 98. A rotating wheel 918 is fixedly connected to the top of the rotating column 915 located on one side of the L-shaped long block 913, and a one-way bearing 919 is fixedly connected to the top of the rotating wheel 918. A placing plate 920 is fixedly connected to the side of the L-shaped long block 913. The outer wall of the rotating wheel 918 is set to a rough surface, and the side of the placing plate 920 is set to a rough surface. The outer wall of the rotating wheel 918 contacts the side of the placing plate 920, and the side of the resistance plate 917 contacts the inner wall of the rubber belt 916. Through the setting of the above structure, the rubber belt 916 can be rotated once, so that the rubber belt 916 changes the contact surface with the silkworm cocoon sample box, thereby avoiding the problem that the rubber belt 916 repeatedly contacts the silkworm cocoon sample box for a long time, and the surface of the rubber belt 916 gradually wears and becomes smooth, affecting the clamping effect of the rubber belt 916 on the silkworm cocoon sample box.

[0036] When in use, after placing the sample box containing the silk cocoons on the surface of the placement plate 14, the dual-axis motor 92 is started, and the two output shafts of the dual-axis motor 92 cause the two threaded rods 93 to rotate, and the rotation of the two threaded rods 93 causes the two threaded sleeves 95 to move toward the direction of the sample box of the silk cocoons, and the movement of the two threaded sleeves 95 drives the fixed plates 96 to move, and the two fixed plates 96 will fix the sample box of the silk cocoons, thereby preventing the sample box of the silk cocoons from moving inside the test tube 2; the movement of the fixed plates 96 drives the U-shaped rod 97 to move, and the movement of the U-shaped rod 97 drives the push rod 97 to move. As the plate 98 moves, the movement of the push plate 98 will first contact the sample box of the silk cocoon. Under the reaction force of the sample box of the silk cocoon, the push plate 98 will stop moving. As the fixed plate 96 continues to move, the push plate 98 will push the slider 911 to move upward on the surface of the fixed plate 96 through the hinge rod 910. The upward movement of the slider 911 drives the long plate 912 to move upward. When the rough surface of the long plate 912 moves upward and contacts the rough surface of the long plate 914, the resistance between the long plate 912 and the long plate 914 increases. The increase in resistance makes it difficult for the fixed plate 96 to move toward the direction of the silk cocoon sample box. The push plate 98 is used to clamp the cocoon sample box, and the push plate 98 drives the rotating wheel 918 to move synchronously through the rotating column 915. Under the action of the friction between the rough surface of the rotating wheel 918 and the rough surface of the placing plate 920, the rotating wheel 918 drives one of the rotating columns 915 to rotate. When the rotating column 915 rotates, the rubber belt 916 causes the other rotating column 915 to rotate synchronously. Each time the push plate 98 is opened, the push plate 98 drives the rotating wheel 918 to move synchronously in the opposite direction through the rotating column 915. Because the rotating wheel 918 is restricted by the one-way bearing 919, the rotating wheel 918 will not drive the rubber belt 916 to rotate through the rotating column 915. Therefore, the rotating wheel 918 and the placing plate 920 are in a slipping state at this time, and this reciprocating movement ensures that each time the cocoon sample box is clamped, the rubber belt 916 can rotate once, so that the rubber belt 916 changes the contact surface with the cocoon sample box, thereby avoiding the problem that the rubber belt 916 repeatedly contacts the cocoon sample box for a long time, and the surface of the rubber belt 916 gradually wears and becomes smooth, affecting the clamping effect of the rubber belt 916 on the cocoon sample box.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cocoon porosity testing device, comprising a fixed bracket, characterized in that: The inner wall of the fixed bracket is fixedly connected with a test cylinder, the top of the horizontal plate of the fixed bracket is fixedly connected with a collector, the outer wall of the test cylinder is fixedly connected with an ultrasonic oscillator, the outer wall of the test cylinder is fixedly connected with a return pipe, and one end of the return pipe away from the test cylinder is fixedly connected to the outer wall of the collector, the bottom of the upper circular frame of the fixed bracket is fixedly connected with a motor 1, the output shaft of the motor 1 is fixedly connected with a threaded rod 1, the top of the fixed bracket is fixedly connected with an L-shaped plate, the top of the threaded rod 1 is rotatably connected to the top of the inner wall of the L-shaped plate, the outer wall of the threaded rod 1 is threadedly connected with a threaded sleeve 1, the side of the threaded sleeve 1 is fixedly connected with a connecting plate, the inner wall of the connecting plate is slidably connected with a moving block, the top of the moving block is fixedly connected with a vertical rod, the bottom of the vertical rod is fixedly connected with a placing disk, a spring 1 is arranged between the moving block and the connecting plate, the bottom of the moving block is fixedly connected with an L-shaped short plate, the side of the L-shaped short plate is fixedly connected with a round-shaped block, the side of the round-shaped block is fixedly connected with an arc block 1, the side of the L-shaped plate is fixedly connected with an L-shaped long plate, and the inner wall of the L-shaped long plate is fixedly connected with a number of arc blocks 2.

2. A silkworm cocoon porosity testing device according to claim 1, characterized in that: The outer wall of the vertical rod is fixedly connected with a connecting short plate, the side surface of the connecting short plate is fixedly connected with a fixing ring, and the bottom of the fixing ring is fixedly connected with a plurality of pushing plates.

3. The cocoon porosity testing device according to claim 1, characterized in that: The side surface of the threaded sleeve 1 contacts the inner wall of the L-shaped plate, and a plurality of arc blocks 2 are located on the displacement track of the arc block 1.

4. The cocoon porosity testing device according to claim 2, characterized in that: The bottoms of the plurality of push plates are parallel to the bottom of the placement tray.

5. The cocoon porosity testing device according to claim 1, characterized in that: The bottom of the placement plate is provided with an anti-damage device, which includes a protective shell, the inner wall of the protective shell is fixedly connected with a dual-axis motor, the two output shafts of the dual-axis motor are fixedly connected with threaded rods 2, the inner walls on both sides of the placement plate are fixedly connected with limit plates, the ends of the two threaded rods 2 away from the dual-axis motor are rotatably connected to the sides of the two limit plates, the outer walls of the two threaded rods 2 are threadedly connected with threaded sleeves 2, the top of the threaded sleeves 2 is fixedly connected with a fixed plate, the side of the fixed plate is penetrated and slid by a U-shaped rod, the two ends of the U-shaped rod are fixedly connected with the same push plate, two springs are arranged between the push plate and the fixed plate, the push plate is hinged with a hinged rod at one side of the fixed plate, the end of the hinged rod away from the push plate is hinged with a slider, the side of the slider is slidably connected to the side of the fixed plate, the top of the slider is fixedly connected with a long plate, the top of the placement plate is fixedly connected with an L-shaped long block, and the side of the L-shaped long block is fixedly connected with the long plate.

6. A silkworm cocoon porosity testing device according to claim 5, characterized in that: The bottom of the inner wall of the push plate is rotatably connected to two rotating columns, and a rubber belt is transmission-connected between the two rotating columns. The bottom of the inner wall of the push plate is fixedly connected to a resistance plate, the top of the rotating column located on one side of the L-shaped long block is fixedly connected to a rotating wheel, the top of the rotating wheel is fixedly connected to a one-way bearing, and the side of the L-shaped long block is fixedly connected to a placing plate.

7. The cocoon porosity testing device according to claim 5, characterized in that: The top of the long plate is set as a rough surface, the bottom of the long plate is set as a rough surface, and the rough surface of the long plate is located on the movement track of the rough surface of the long plate.

8. The cocoon porosity testing device according to claim 6, characterized in that: The outer wall of the rotating wheel is set as a rough surface, the side of the placing plate is set as a rough surface, the outer wall of the rotating wheel contacts the side of the placing plate, and the side of the resisting plate contacts the inner wall of the rubber belt.

9. A method for testing the porosity of silkworm cocoons according to any one of claims 1 to 8, characterized in that: The steps include: S1. Dry the cocoon shell to be tested, weigh it, record it as M0, in g, put it into a metal sample box, the sample box is hollowed out, the volume is known to be 5.45 ml, record it as V0, in ml, turn on the electronic balance, and put it in a stable test state; S2. Distilled water is injected into the test cylinder until water overflows from the return pipe. The overflowed water flows into the recovery device through the return pipe. When the water in the recovery device becomes still, the electronic balance is cleared or peeled, and the sample box containing the cocoons is placed on the surface of the placement plate; S3, then start the motor 1, the output shaft of the motor 1 makes the threaded rod 1 rotate, the rotation of the threaded rod 1 makes the threaded sleeve 1 move towards the test tube, the movement of the threaded sleeve 1 drives the connecting plate, the moving block, the vertical rod, and the placement plate to move, and finally the placement plate drives the sample box with the cocoon to slowly immerse into the test for t≤3s; S4. At this time, some distilled water in the test tube flows out from the return pipe into the recovery device. After the electronic balance stabilizes, it displays M1 in g. The density of water is ρ1 in g·cm -3 , then the volume of the cocoon sample S5. Then turn on the ultrasonic oscillator, control the ultrasonic frequency at 20-40kHZ, and the power at 1kW. The high-frequency mechanical oscillation generated by the ultrasonic wave forms a "cavitation" effect, which makes the silk on the cocoons in the sample box quickly and fully wetted and penetrated by the distilled water, and the air between the pores of the silk fibers is quickly discharged. At this time, the distilled water level in the test cylinder is lower than the lower tube surface of the connection between the return pipe and the test cylinder. Use a pipette or dropper to transfer part of the distilled water in the recovery device to the test cylinder until distilled water flows out of the return pipe again. Wait for the distilled water in the recovery device to be still, and then read the electronic balance after it is stable, which is recorded as M2, in g.

Images