A plankton sampler

Abstract

The present invention discloses a plankton sampler, which is applied in the field of samplers, and comprises a sampler box, a U-shaped plate is installed at the bottom of the sampler box, the lower end of the U-shaped plate is rotatably connected to a shell, a fixing rod is fixedly provided inside the U-shaped plate, a long gear is fixedly sleeved on the surface of the fixing rod, a toothed plate is provided on the top of the shell, a driving mechanism is provided inside the sampler box, a partition frame is placed inside the sampler box, through holes are provided on the front and back of the partition frame, a first screw is rotatably connected inside the partition frame, a baffle is threadedly connected on the surface of the first screw, a fixing frame is installed on the top of the sampler box, a second screw is rotatably connected inside the fixing frame, the fixed volume accuracy and sample separation uniformity inside the equipment can be improved and the sample transfer can be made more convenient.

Description

Technical Field

[0001] The invention relates to the field of samplers, in particular to a plankton sampler. Background Art

[0002] As an important primary consumer in rivers, lakes and oceans, zooplankton is an indispensable part of the food chain and plays an important indicative role in the assessment of fishery resources. In the observation and statistics of zooplankton, a large amount of identification and statistical analysis is often required. In order to reduce the waste of time and manpower, improve the efficiency of identification, and reduce errors in the assessment of the health of the ecological environment of the water body, a plankton sampler is needed.

[0003] The existing sample divider is composed of a flat base, a support rod, a cylindrical sample divider, and a sample receiving container. The sample enters from the side wall of the cylindrical sample divider, and after being evenly divided, it is poured into the corresponding sample receiving container to complete the sample division, refer to patent CN2014204452910. This plankton sample divider has a partition plate fixed inside to divide the sample into a specified proportion of volume. Due to the impact of the liquid, after the shaking is completed, there will be a certain deviation in the liquid height on both sides of the partition plate, resulting in a fixed volume error, which makes the uniformity of the division poor. At the same time, the sample is poured out to the sample receiving container through the hole. Since the hole does not take corresponding sealing measures when rotating, it is easy to cause sample loss, and the pouring efficiency is low when pouring out the sample due to the size of the hole, and plankton is easy to remain in it, affecting the accuracy of the detection; in addition, if it is necessary to take samples of different proportions, it is necessary to use a variety of sample dividers of different specifications, which are more equipment and cumbersome to operate. Summary of the invention

[0004] The purpose of the present invention is to provide a plankton sampler, which solves the problems of poor volume determination accuracy, poor separation uniformity and time-consuming sample transfer operation of the existing sampler.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A plankton sampler comprises a sample box, a U-shaped plate is installed at the bottom of the sample box, a housing is rotatably connected to the lower end of the U-shaped plate, a fixing rod is fixedly arranged inside the U-shaped plate, a long gear is fixedly sleeved on the surface of the fixing rod, a tooth plate is arranged on the top of the housing, and a driving mechanism capable of driving the tooth plate to move back and forth is arranged inside the housing;

[0007] The top of the sample separation box is provided with a first opening and a second opening, a partition frame is placed inside the left side of the sample separation box, a fixing frame is provided on the second opening, a second screw is rotatably connected inside the fixing frame, a connecting plate is threadedly connected to the surface of the second screw, and the bottom of the connecting plate passes through the second opening and is fixedly connected to the top of the partition frame;

[0008] The top of the sample separation box is respectively provided with a sample inlet and a sample outlet, a raised portion is provided on one side of the top of the partition frame and extends out of the first opening, a baffle is slidably and sealedly arranged inside the partition frame, the upper end of the baffle extends into the raised portion, and the partition frame (8) located on the left side of the baffle is provided with through holes on the front and back sides.

[0009] The adoption of the above technical solution can improve the volume determination accuracy and separation uniformity of the sample and make the transfer of the sample more convenient.

[0010] The present invention is further configured as follows: the driving mechanism includes a reciprocating screw, one end of the reciprocating screw is rotatably connected to the inside of the shell through a bearing, the other end of the reciprocating screw is fixedly sleeved with a motor, the surface of the reciprocating screw is threadedly connected with a threaded plate, and the top of the threaded plate is fixedly connected to the bottom of the tooth plate through a fixing member.

[0011] By adopting the above technical solution, through the setting of the reciprocating screw, the motor and the threaded plate, it is possible to provide power for the lateral reciprocating movement of the tooth plate. When the motor is started, it will drive the reciprocating screw to rotate. When the reciprocating screw rotates, it will drive the threaded plate to move back and forth laterally. When the threaded plate moves, it will drive the tooth plate to move together with the cooperation of the fixing part. When the tooth plate moves, it will drive the long gear to rotate forward and reverse slightly.

[0012] The present invention is further configured as follows: a slide rail is bolted inside the shell, and a sliding block is fixedly provided at the bottom of the threaded plate and is slidably connected to the slide rail.

[0013] By adopting the above technical solution, the threaded plate can be limited by setting the slide rail and the slider to prevent the threaded plate from rotating during the left and right movement.

[0014] The present invention is further configured as follows: a heat dissipation groove is provided on the front side of the shell, and a dustproof net is installed inside the heat dissipation groove.

[0015] By adopting the above technical solution, the heat dissipation grooves and the dustproof net are arranged, so as to improve the ventilation effect inside the housing and prevent dust in the air from falling onto the motor.

[0016] The present invention is further configured as follows: a first limiting rod is provided through one side of the baffle, and both ends of the first limiting rod are fixedly connected to the inside of the partition frame.

[0017] By adopting the above technical solution, the baffle can be limited by setting the first limiting rod to prevent the baffle from rotating during the process of moving left and right.

[0018] The present invention is further configured as follows: a second limiting rod is provided through the front surface of the connecting plate, and both ends of the second limiting rod are fixedly connected to the inside of the fixing frame.

[0019] By adopting the above technical solution, the connection plate can be limited by setting the second limiting rod to prevent the connection plate from rotating during the forward and backward movement.

[0020] The present invention is further configured as follows: a scale line is integrally punched on the top of the sample separation box located in the second opening, and a pointing block is installed on one side of the connecting plate close to the scale line.

[0021] By adopting the above technical solution, through the setting of the scale lines and the pointing blocks, it is convenient for personnel to observe and understand the distance that the partition frame moves forward and backward.

[0022] The present invention is further configured as follows: a dust cover is placed on the top of the sample separation box, a first magnetic block is inlaid on the top of the sample separation box, and a second magnetic block magnetically connected to the first magnetic block is inlaid on the bottom of the dust cover.

[0023] By adopting the above technical solution, the opening at the top of the sample separation box can be closed by arranging the dust cover, the first magnetic block and the second magnetic block, so as to prevent dust from falling in when the sample separation box is idle.

[0024] The present invention is further configured as follows: a first turning handle is fixedly disposed at one end of the first screw rod, and a second turning handle is fixedly disposed at one end of the second screw rod.

[0025] By adopting the above technical solution, through the provision of the first turning handle and the second turning handle, it is convenient for personnel to rotate the first screw rod and the second screw rod.

[0026] In summary, the present invention has the following beneficial effects:

[0027] The present invention pours the sample into the sample separation box from the sample inlet, and after the sample is poured in, the first handle is held to drive the first screw to rotate. When the first screw rotates, it will drive the baffle to move rightward through the cooperation of the first limiting rod and away from the through hole of the partition frame. At this time, the sample can pass through the through hole, and the second handle is held to drive the second screw to rotate to adjust the partition space located in the sample separation box, so as to divide the sample into capacities of different proportions as required, and then the motor is started to drive the toothed plate to move back and forth laterally. When the toothed plate moves back and forth, it will drive the long gear to rotate in a small amplitude in forward and reverse directions. When the long gear rotates, it will drive the sample separation box to rotate together to shake the internal sample, and when the sample is evenly mixed and stationary, the baffle is driven to move leftward by rotating the first screw to block the through hole of the partition frame, so as to achieve even separation, thereby improving the volumetric accuracy and separation uniformity of the sample, and then the dust cover is removed, and the separated specified ratio sample is quickly poured out from the sample outlet, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the structure of the present invention;

[0029] Figure 2 It is a front cross-sectional view of the structure of the present invention;

[0030] Figure 3 It is a schematic diagram on the left side of the structure of the present invention;

[0031] Figure 4 is a top sectional view of the structure of the present invention;

[0032] Figure 5 is a bottom view schematic diagram of the dust cover of the present invention;

[0033] Figure 6 The structure of the present invention Figure 4 Enlarged schematic diagram at point A in the middle.

[0034] 1. Sample separation box; 2. Shell; 3. U-shaped plate; 4. Fixed rod; 5. Long gear; 6. Tooth plate; 7. Driving mechanism; 71. Reciprocating screw; 72. Motor; 73. Threaded plate; 8. Partition frame; 9. Through hole; 10. First screw; 11. Baffle; 12. Fixed frame; 13. Second screw; 14. Connecting plate; 15. Sample inlet; 16. Sample outlet; 17. Slide rail; 18. Slider; 19. Heat sink; 20. Dust net; 21. First limit rod; 22. Second limit rod; 23. Scale line; 24. Pointing block; 25. Dust cover; 26. First magnetic block; 27. Second magnetic block; 28. First turning handle; 29. ​​Second turning handle; 30. First opening; 31. Second opening. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings. Example 1

[0036] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A plankton sampler comprises a sample box 1, a U-shaped plate 3 is installed at the bottom of the sample box 1, a shell 2 is rotatably connected to the lower end of the U-shaped plate 3, a fixing rod 4 is horizontally fixed inside the U-shaped plate 3, a long gear 5 is fixedly sleeved on the surface of the fixing rod 4, a tooth plate 6 is arranged on the top of the shell 2, and a driving mechanism 7 is arranged inside the sample box 1.

[0037] Preferably, reference Figure 3 Two fixing plates are fixedly arranged in parallel at the bottom of the sample separation box 1, and the U-shaped plate 3 is detachably installed between the two fixing plates by bolts and nuts, so as to facilitate the quick separation of the sample separation box 1 and the housing 2.

[0038] The top of the sample separation box 1 is provided with a first opening 30 and a second opening 31, a partition frame 8 is placed inside the left side of the sample separation box 1, a fixing frame 12 is provided on the second opening 31, a second screw 13 is rotatably connected inside the fixing frame 12, a connecting plate 14 is threadedly connected to the surface of the second screw 13, and the bottom of the connecting plate 14 passes through the second opening 31 and is fixedly connected to the top of the partition frame 8.

[0039] The top of the sample separation box 1 is respectively provided with a sample inlet 15 and a sample outlet 16, wherein the sample inlet 15 is located on the right side of the sample separation box 1, and the sample outlet 16 is located on the left side of the sample separation box 1. A protrusion is provided on one side of the top of the partition frame 8 and extends out of the first opening 30. A baffle 11 is slidably and sealedly provided in the partition frame 8. The upper end of the baffle 11 extends into the protrusion. The partition frame (8 located on the left side of the baffle 11 is provided with through holes 9 on the front and back sides. When the baffle 11 slides to the left, there is at least one position where the baffle 11 can block all the through holes 9.

[0040] The sample is poured into the sample separation box 1 from the sample inlet 15. After the sample is poured in, the first handle 28 is held to drive the first screw 10 to rotate. When the first screw 10 rotates, it will drive the baffle 11 to move to the right with the cooperation of the first limit rod 21. When the baffle 11 moves away from the through hole 9, the sample can pass through the through hole 9, so that the sample can maintain the same liquid level height on both sides of the baffle 11. When sampling is required, the baffle 11 is moved to the left to the through hole 9, and all the through holes 9 are blocked. At this time, the sample of the specified proportion can be poured out through the sample outlet 16, and the operation is simple.

[0041] By holding the second handle 29 to drive the second screw 13 to rotate, the adjustable partition frame 8 is located in the partition space inside the sample separation box 1, and then the motor 72 is started to drive the tooth plate 6 to move back and forth laterally. When the tooth plate 6 moves back and forth, it will drive the long gear 5 to rotate slightly in the forward and reverse directions. When the long gear 5 rotates, it will drive the sample separation box 1 to rotate together to shake the internal sample, which can improve the volume determination accuracy and separation uniformity of the sample and make the transfer of the sample more convenient.

[0042] This product combines a cylindrical sample divider and a sample receiving container into one, and the sample can be divided into equal parts using only one container. Due to the integration of this product, the transfer of samples and the cleaning of the sample divider are more convenient. Preferably, the sample dividing box 1 is designed with acrylic plate material to eliminate the possibility of container deformation. At the same time, the sample divider has a larger volume and can accommodate more samples to prevent splashing during shaking, thereby increasing the practicality and flexibility of the sample divider, improving the efficiency of zooplankton detection, and fully solving the problems of low efficiency, time-consuming and labor-intensive sampling devices.

[0043] refer to Figure 2 The driving mechanism 7 includes a reciprocating screw 71, one end of which is rotatably connected to the inside of the housing 2 through a bearing, and the other end of the reciprocating screw 71 is fixedly sleeved with a motor 72. The surface of the reciprocating screw 71 is threadedly connected with a threaded plate 73, and the top of the threaded plate 73 is fixedly connected to the bottom of the toothed plate 6 through a fixing member. Through the arrangement of the reciprocating screw 71, the motor 72 and the threaded plate 73, power can be provided for the lateral reciprocating movement of the toothed plate 6. When the motor 72 is started, it will drive the reciprocating screw 71 to rotate. When the reciprocating screw 71 rotates, it will drive the threaded plate 73 to reciprocate laterally. When the threaded plate 73 moves, it will drive the toothed plate 6 to move together with the cooperation of the fixing member. When the toothed plate 6 moves, it will drive the long gear 5 to rotate slightly forward and reverse.

[0044] refer to Figure 2 A slide rail 17 is bolted to the inside of the shell 2, and a slider 18 slidably connected to the slide rail 17 is fixed to the bottom of the threaded plate 73. Through the setting of the slide rail 17 and the slider 18, the threaded plate 73 can be limited to prevent the threaded plate 73 from rotating during the left and right movement.

[0045] refer to Figure 1 A heat dissipation groove 19 is provided on the front of the shell 2, and a dustproof net 20 is installed inside the heat dissipation groove 19. The arrangement of the heat dissipation groove 19 and the dustproof net 20 can improve the ventilation effect inside the shell 2 and prevent dust in the air from falling onto the motor 72.

[0046] refer to Figure 2A first limiting rod 21 is provided on one side of the baffle 11, and both ends of the first limiting rod 21 are fixedly connected to the inside of the raised portion of the partition frame 8. Through the setting of the first limiting rod 21, the baffle 11 can be limited to prevent the baffle 11 from rotating during the left and right movement.

[0047] refer to Figure 6 A second limiting rod 22 is provided on the front side of the connecting plate 14, and both ends of the second limiting rod 22 are fixedly connected to the inside of the fixing frame 12. Through the setting of the second limiting rod 22, the connecting plate 14 can be limited to prevent the connecting plate 14 from rotating during the forward and backward movement.

[0048] refer to Figure 6 A scale line 23 is integrally stamped on the top of the sample separation box 1 located in the second opening 31, and a pointing block 24 is installed on the side of the connecting plate 14 close to the scale line 23. The setting of the scale line 23 and the pointing block 24 can facilitate personnel to observe and understand the distance that the partition frame 8 moves forward and backward.

[0049] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A dust cover 25 is placed on the top of the sample separation box 1, a first magnetic block 26 is embedded on the top of the sample separation box 1, and a second magnetic block 27 magnetically connected to the first magnetic block 26 is embedded on the bottom of the dust cover 25. By setting the dust cover 25, the first magnetic block 26 and the second magnetic block 27, the opening on the top of the sample separation box 1 can be closed to prevent dust from falling in when it is idle.

[0050] refer to Figure 2 and Figure 4 A first turning handle 28 is fixedly provided at one end of the first screw rod 10, and a second turning handle 29 is fixedly provided at one end of the second screw rod 13. The arrangement of the first turning handle 28 and the second turning handle 29 facilitates personnel to rotate the first screw rod 10 and the second screw rod 13.

[0051] Preferably, the first screw 10 and the second screw 13 are both made of stainless steel, and the first screw 10 and the second screw 13 have the characteristics of high strength, low density and excellent corrosion resistance.

[0052] Brief description of the use process: pour the sample from the sample inlet 15 into the sample separation box 1, and after the sample is poured in, hold the first handle 28 to drive the first screw 10 to rotate. When the first screw 10 rotates, it will drive the baffle 11 to move to the right with the cooperation of the first limit rod 21. At this time, the baffle 11 is away from the through hole 9, and the sample can pass through the through hole 9, so that the samples on both sides of the partition frame 8 can maintain fluidity. By holding the second handle 29 to drive the second screw 13 to rotate, the partition frame 8 can be adjusted to the partition space in the sample separation box 1, and then start The motor 72 drives the tooth plate 6 to move back and forth laterally. When the tooth plate 6 moves back and forth, it will drive the long gear 5 to rotate slightly in the forward and reverse directions. When the long gear 5 rotates, it will drive the sample box 1 to rotate together to shake the internal sample. When the sample is mixed evenly and is still, the liquid level heights on both sides of the partition frame 8 are consistent. Then, turn the first handle 28 to drive the baffle 11 to move to the left to block all the through holes 9. Then open the dust cover 25, remove the sample box 1, and pour the separated samples of the specified proportion out of the sample outlet 16. The operation is simple.

Claims

1. A plankton sampler, comprising a sampler box (1), characterized in that: A U-shaped plate (3) is installed at the bottom of the sample separation box (1), the lower end of the U-shaped plate (3) is rotatably connected to the housing (2), a fixing rod (4) is fixedly arranged inside the U-shaped plate (3), a long gear (5) is fixedly sleeved on the surface of the fixing rod (4), a tooth plate (6) is arranged on the top of the housing (2), and a driving mechanism (7) capable of driving the tooth plate (6) to reciprocate is arranged inside the housing (2); The top of the sample separation box (1) is provided with a first opening (30) and a second opening (31); a partition frame (8) is placed inside the left side of the sample separation box (1); a fixing frame (12) is provided on the second opening (31); a second screw rod (13) is rotatably connected inside the fixing frame (12); a connecting plate (14) is threadedly connected to the surface of the second screw rod (13); and the bottom of the connecting plate (14) passes through the second opening (31) and is fixedly connected to the top of the partition frame (8); The top of the sample separation box (1) is respectively provided with a sample inlet (15) and a sample outlet (16); a raised portion is provided on one side of the top of the partition frame (8) and extends out of the first opening (30); a baffle (11) is slidably and sealedly arranged inside the partition frame (8); the upper end of the baffle (11) extends into the raised portion; through holes (9) are provided on the front and back of the partition frame (8) located on the left side of the baffle (11); when the baffle (11) slides to the left, there is at least one position where the baffle (11) can block all the through holes (9).

2. A plankton sampler according to claim 1, characterized in that: The driving mechanism (7) comprises a reciprocating screw (71), one end of the reciprocating screw (71) being rotatably connected to the interior of the housing (2) via a bearing, the other end of the reciprocating screw (71) being fixedly sleeved with a motor (72), a threaded plate (73) being threadedly connected to the surface of the reciprocating screw (71), and the top of the threaded plate (73) being fixedly connected to the bottom of the toothed plate (6) via a fixing member.

3. A plankton sampler according to claim 2, characterized in that: A slide rail (17) is bolted to the interior of the housing (2), and a sliding block (18) slidably connected to the slide rail (17) is fixedly connected to the bottom of the threaded plate (73).

4. A plankton sampler according to claim 1, characterized in that: A heat dissipation slot (19) is provided on the front side of the housing (2), and a dustproof net (20) is installed inside the heat dissipation slot (19).

5. A plankton sampler according to claim 1, characterized in that: A first limiting rod (21) is provided through one side of the baffle plate (11), and both ends of the first limiting rod (21) are fixedly connected to the inside of the partition frame (8).

6. A plankton sampler according to claim 1, characterized in that: A second limiting rod (22) is provided through the front surface of the connecting plate (14), and both ends of the second limiting rod (22) are fixedly connected to the inside of the fixing frame (12).

7. A plankton sampler according to claim 1, characterized in that: A scale line (23) is integrally punched on the top of the sample separation box (1) located in the second opening (31), and a pointing block (24) is installed on one side of the connecting plate (14) close to the scale line (23).

8. A plankton sampler according to claim 1, characterized in that: A dust cover (25) is placed on the top of the sample separation box (1), a first magnetic block (26) is embedded on the top of the sample separation box (1), and a second magnetic block (27) magnetically connected to the first magnetic block (26) is embedded on the bottom of the dust cover (25).

9. A plankton sampler according to claim 1, characterized in that: The baffle plate (11) is driven to move leftward by rotating the first screw rod (10); a first turning handle (28) is fixedly provided at one end of the first screw rod (10), and a second turning handle (29) is fixedly provided at one end of the second screw rod (13).

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