Plankton sample splitter

Abstract

A plankton sample splitter, comprising a sample-splitting box (1), wherein a U-shaped plate (3) is mounted at the bottom of the sample-splitting box (1); a housing (2) is rotationally connected to the lower end of the U-shaped plate (3); a fixed rod (4) is fixedly provided inside the U-shaped plate (3), and a spool gear (5) is fixedly sleeved on the surface of the fixed rod (4); a toothed plate (6) is provided on the top of the housing; a driving mechanism (7) is provided inside the sample-splitting box (1); a partition frame (8) is placed inside the sample-splitting box (1), and through holes (9) are provided in each of a front face and a back face of the partition frame (8); a first screw rod (10) is rotationally connected in the partition frame (8), and a baffle (11) is connected in a threaded manner to the surface of the first screw rod (10); and a fixed frame (11) is mounted on the top of the sample-splitting box (1), and a second screw rod (13) is rotationally connected in the fixed frame (12). The constant-volume accuracy and sample-splitting uniformity in an apparatus can be improved, and sample transfer can be made more convenient.

Description

Plankton sample divider TECHNICAL FIELD

[0001] The present application relates to the field of sample divider, in particular to a plankton sample divider. BACKGROUND

[0002] Zooplankton as an important primary consumer in rivers, lakes and oceans, is an indispensable part of the food chain, and has an important indication in the process of evaluating 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 labor, improve the identification efficiency and reduce the error in evaluating the health of the ecological environment of the water area, a plankton sample divider 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, is evenly divided and poured into the corresponding sample receiving container, and the sample division is completed. Referring to patent CN2014204452910. This plankton sample divider has a partition plate fixedly arranged inside, which divides the sample into a specified proportion of capacity. Due to the impact of liquid, there is a certain deviation in the liquid height on both sides of the partition plate after shaking, which causes a constant volume error and poor uniformity of the partition. The sample is poured out of the hole to the sample receiving container. Since the hole is not sealed during rotation, the sample is easily lost, and the pouring efficiency is low when pouring the sample, and the plankton is easily left in the hole, affecting the accuracy of detection. In addition, if different proportions of samples are needed, multiple different specifications of sample dividers are needed, which is more equipment and more complicated operation. SUMMARY

[0004] The purpose of the present application is to provide a plankton sample divider, which solves the problems of poor constant volume accuracy, poor partition uniformity and time-consuming sample transfer operation of the existing sample divider.

[0005] The above technical purpose of the present application is realized by the following technical scheme:

[0006] A plankton sample divider, comprising a sample divider box, a U-shaped plate is installed at the bottom of the sample divider box, a housing is rotatably connected to the lower end of the U-shaped plate, a fixed rod is fixedly arranged in the U-shaped plate, a long gear is fixedly sleeved on the surface of the fixed rod, a tooth plate is arranged at the top of the housing, and a driving mechanism capable of driving the tooth plate to reciprocate is arranged in the housing.

[0007] The top of the sample dividing box is provided with a first opening and a second opening, the inside of the left side of the sample dividing box is provided with a partition frame, the inside of the partition frame is rotationally connected with a first screw rod, the second opening is provided with a fixed frame, the inside of the fixed frame is rotationally connected with a second screw rod, the surface of the second screw rod is threadedly connected with a connecting plate, and the bottom of the connecting plate is fixedly connected with the top of the partition frame through the second opening.

[0008] The top of the sample dividing box is provided with a first opening and a second opening, the inside of the left side of the sample dividing box is provided with a partition frame, the inside of the partition frame is rotationally connected with a first screw rod, the second opening is provided with a fixed frame, the inside of the fixed frame is rotationally connected with a second screw rod, the surface of the second screw rod is threadedly connected with a connecting plate, and the bottom of the connecting plate is fixedly connected with the top of the partition frame through the second opening.

[0009] The above technical scheme can improve the constant volume accuracy and separation uniformity of the sample, and can also make the transfer of the sample more convenient.

[0010] The driving mechanism comprises a reciprocating screw rod, one end of the reciprocating screw rod is rotationally connected with the inside of the shell through a bearing, the other end of the reciprocating screw rod is fixedly sleeved with a motor, the surface of the motor is threadedly connected with a threaded plate, and the top of the threaded plate is fixedly connected with the bottom of the toothed plate through a fixing piece.

[0011] The above technical scheme can provide power for the transverse reciprocating movement of the toothed plate, the motor drives the reciprocating screw rod to rotate after starting, the reciprocating screw rod drives the threaded plate to move transversely during rotation, the threaded plate drives the toothed plate to move together through the cooperation of the fixing piece during movement, and the toothed plate drives the long gear to rotate in small amplitude in the positive and negative directions during movement.

[0012] The inside of the shell is bolted with a sliding rail, and the bottom of the threaded plate is fixedly provided with a sliding block in sliding connection with the sliding rail.

[0013] The above technical scheme can limit the threaded plate and prevent the threaded plate from rotating during left and right movement.

[0014] The front surface of the shell is provided with a heat dissipation groove, and the inside of the heat dissipation groove is provided with a dustproof net.

[0015] The above technical scheme can improve the ventilation effect of the inside of the shell and prevent dust in the air from falling onto the motor.

[0016] One side of the baffle is provided with a first limiting rod, and the two ends of the first limiting rod are fixedly connected with the inside of the partition frame.

[0017] By means of the first limiting rod, the baffle can be limited, and rotation of the baffle during left-right movement is prevented.

[0018] The front surface of the connecting plate is provided with a second limiting rod, and both ends of the second limiting rod are fixedly connected to the inside of the fixed frame.

[0019] By means of the second limiting rod, the connecting plate can be limited, and rotation of the connecting plate during forward-backward movement is prevented.

[0020] The top of the sample separation box in the second opening is integrally stamped with a scale line, and a pointing block is installed on the side of the connecting plate close to the scale line.

[0021] By means of the scale line and the pointing block, the distance of forward-backward movement of the separation frame can be observed and understood by personnel.

[0022] The top of the sample separation box is provided with a dust cover, the top of the sample separation box is inlaid with a first magnetic block, and the bottom of the dust cover is inlaid with a second magnetic block magnetically connected to the first magnetic block.

[0023] By means of the dust cover, the first magnetic block and the second magnetic block, the opening at the top of the sample separation box can be closed, and dust is prevented from falling into the opening when the sample separation box is idle.

[0024] The other end of the first screw rod is fixedly provided with a first handle, and the other end of the second screw rod is fixedly provided with a second handle.

[0025] By means of the first handle and the second handle, the first screw rod and the second screw rod can be conveniently rotated by personnel.

[0026] In summary, the present application has the following advantages:

[0027] The application is characterized in that: the sample is poured into the sample dividing box from the sample inlet, the first handle is held to drive the first screw rod to rotate, the first screw rod drives the baffle to move right away from the through hole of the partition frame under the cooperation of the first limiting rod, at this time the sample can pass through the through hole, the second handle is held to drive the second screw rod to rotate to adjust the partition space of the partition frame in the sample dividing box, the sample is divided into different proportions according to the requirements, then the motor is started to drive the tooth plate to move transversely and reciprocally, the tooth plate drives the long gear to rotate forward and reversely in a small range when reciprocally moving, the long gear drives the sample dividing box to rotate when rotating, so that the internal sample is shaken, when the sample is mixed uniformly and stationary, the first screw rod is rotated to drive the baffle to move left to block the through hole of the partition frame, the uniform partition is realized, the constant volume accuracy and the uniformity of the partition are improved, then the dust cover is removed, the specified proportion sample after partition is poured out from the sample outlet quickly, and the operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0028] Fig. 1 is a structural perspective view of the application;

[0029] Fig. 2 is a structural front view of the application;

[0030] Fig. 3 is a structural left side view of the application;

[0031] Fig. 4 is a structural top view of the application;

[0032] Fig. 5 is a dust cover bottom view of the application;

[0033] Fig. 6 is an enlarged view of A in Fig. 4 of the application.

[0034] Fig. 1 is a structural perspective view of the application; DETAILED DESCRIPTION

[0035] The application will be further described in detail below with reference to the drawings.

[0036] Example 1:

[0037] Referring to FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. 6, a plankton sampler comprises a sampling box 1, the bottom of the sampling box 1 is provided with a U-shaped plate 3, the lower end of the U-shaped plate 3 is rotatably connected with a shell 2, the inside of the U-shaped plate 3 is horizontally fixedly provided with a fixed rod 4, the surface of the fixed rod 4 is fixedly sleeved with a long gear 5, the top of the shell 2 is provided with a toothed plate 6, and the inside of the sampling box 1 is provided with a driving mechanism 7.

[0038] Preferably, referring to FIG. 3, the bottom of the sampling box 1 is horizontally fixedly provided with two fixed plates, and the U-shaped plate 3 is detachably installed between the two fixed plates through bolts and nuts, so that the sampling box 1 and the shell 2 can be quickly separated.

[0039] The top of the sampling box 1 is provided with a first opening 30 and a second opening 31, the inside of the left side of the sampling box 1 is placed with a partition frame 8, the inside of the partition frame 8 is rotatably connected with a first screw rod 10, the second opening 31 is provided with a fixed frame 12, the inside of the fixed frame 12 is rotatably connected with a second screw rod 13, the surface of the second screw rod 13 is threadedly connected with a connecting plate 14, and the bottom of the connecting plate 14 is fixedly connected with the top of the partition frame 8 through the second opening 31.

[0040] The top of the sampling box 1 is respectively provided with a sampling inlet 15 and a sampling outlet 16, wherein the sampling inlet 15 is located on the right side of the sampling box 1, and the sampling outlet 16 is located on the left side of the sampling box 1, one side of the top of the partition frame 8 is provided with a protruding portion and extends out of the first opening 30, the partition frame 8 is slidably and sealingly provided with a baffle 11, the first screw rod 10 is threadedly connected with the baffle 11, the upper end of the baffle 11 extends into the protruding portion, and the front and back surfaces of the partition frame 8 on the left side of the baffle 11 are both provided with through holes 9, when the baffle 11 slides to the left, at least one position, the baffle 11 can block all the through holes 9.

[0041] By pouring the sample into the sampling box 1 from the sampling inlet 15, the first screw rod 10 is rotated by holding the first handle 28 after pouring the sample, the baffle 11 is moved to the right under the cooperation of the first limiting rod 21 when the first screw rod 10 rotates, when the baffle 11 moves away from the through holes 9, the sample can pass through the through holes 9, so that the same liquid level height can be maintained on both sides of the baffle 11, when sampling is needed, the baffle 11 is moved to the left to the through holes 9, all the through holes 9 are blocked, at this time, the sample of a specified proportion can be poured out through the sampling outlet 16, and the operation is simple.

[0042] The second handle 29 is held to rotate the second screw rod 13 to adjust the separation space of the separation frame 8 in the sample box 1, and then the motor 72 is started to drive the tooth plate 6 to move transversely and reciprocally, and the tooth plate 6 drives the long gear 5 to rotate forward and reversely in a small amplitude when moving reciprocally, and the long gear 5 drives the sample box 1 to rotate when rotating, so that the internal sample is shaken, the constant volume accuracy and separation uniformity of the sample are improved, and the transfer of the sample is more convenient.

[0043] The product integrates the cylindrical sample divider and the sample receiving container, and only one container is used to divide the sample into equal parts. Due to the integration of the product, the transfer of the sample and the cleaning of the sample divider are more convenient. Preferably, the sample box 1 is made of acrylic plate material to prevent the container from deforming. The volume of the sample divider is larger, which can accommodate more samples and prevent spilling during shaking, thereby increasing the practicability and flexibility of the sample divider and improving the efficiency of zooplankton detection.

[0044] Referring to FIG. 2, the driving mechanism 7 includes a reciprocating screw rod 71, one end of the reciprocating screw rod 71 is rotatably connected to the inside of the housing 2 through a bearing, the other end of the reciprocating screw rod 71 is fixedly sleeved with a motor 72, the surface of the motor 72 is threadedly connected with a threaded plate 73, the top of the threaded plate 73 is fixedly connected with the bottom of the tooth plate 6 through a fixing piece. The transverse reciprocating movement of the tooth plate 6 is powered by the reciprocating screw rod 71, the motor 72 and the threaded plate 73. When the motor 72 is started, it drives the reciprocating screw rod 71 to rotate, and the reciprocating screw rod 71 drives the threaded plate 73 to move transversely when rotating, and the threaded plate 73 drives the tooth plate 6 to move through the cooperation of the fixing piece when moving, and the tooth plate 6 drives the long gear 5 to rotate forward and reversely in a small amplitude when moving.

[0045] Referring to FIG. 2, the inside of the housing 2 is bolted with a sliding rail 17, and the bottom of the threaded plate 73 is fixedly provided with a sliding block 18 which is slidingly connected with the sliding rail 17. The threaded plate 73 is limited by the sliding rail 17 and the sliding block 18, which prevents the threaded plate 73 from rotating during left and right movement.

[0046] Referring to FIG. 1, the front surface of the housing 2 is provided with a heat dissipation groove 19, and the inside of the heat dissipation groove 19 is provided with a dust screen 20. The heat dissipation groove 19 and the dust screen 20 can improve the ventilation effect inside the housing 2 and prevent dust in the air from falling onto the motor 72.

[0047] Referring to FIG. 2, the first limiting rod 21 is provided on one side of the baffle 11, and the two ends of the first limiting rod 21 are fixedly connected with the inside of the protruding part of the separation frame 8. The first limiting rod 21 can limit the baffle 11 to prevent the baffle 11 from rotating during left and right movement.

[0048] Referring to FIG. 6, the front surface of the connecting plate 14 is provided with a second limiting rod 22, and both ends of the second limiting rod 22 are fixedly connected with the inner part of the fixed frame 12. Through the arrangement of the second limiting rod 22, the connecting plate 14 can be limited, and rotation of the connecting plate 14 during forward and backward movement can be prevented.

[0049] Referring to FIG. 6, the top of the sample separation box 1 is integrally punched with a scale line 23 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. Through the arrangement of the scale line 23 and the pointing block 24, the distance of the forward and backward movement of the separation frame 8 can be observed and understood by personnel.

[0050] Referring to FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, the top of the sample separation box 1 is provided with a dust cover 25, the top of the sample separation box 1 is inlaid with a first magnetic block 26, the bottom of the dust cover 25 is inlaid with a second magnetic block 27 which is magnetically connected with the first magnetic block 26. Through the arrangement of the dust cover 25, the first magnetic block 26 and the second magnetic block 27, the opening at the top of the sample separation box 1 can be closed, and dust can be prevented from falling in when idle.

[0051] Referring to FIG. 2 and FIG. 4, the other end of the first screw rod 10 is fixedly provided with a first rotating handle 28, and the other end of the second screw rod 13 is fixedly provided with a second rotating handle 29. Through the arrangement of the first rotating handle 28 and the second rotating handle 29, the first screw rod 10 and the second screw rod 13 can be conveniently rotated by personnel.

[0052] Preferably, the first screw rod 10 and the second screw rod 13 are both made of stainless steel material, and the first screw rod 10 and the second screw rod 13 have the characteristics of high strength, small density and excellent corrosion resistance.

[0053] Brief description of the use process: by pouring the sample from the sample inlet 15 into the sample separation box 1, holding the first rotating handle 28 to drive the first screw rod 10 to rotate, the first screw rod 10 will drive the baffle 11 to move to the right through the cooperation of the first limiting rod 21 when rotating, at this time the baffle 11 is away from the through hole 9, the sample can pass through the through hole 9, so that the samples on both sides of the separation frame 8 remain flowable, the second rotating handle 29 is held to drive the second screw rod 13 to rotate to adjust the separation space of the separation frame 8 in the sample separation box 1, then the motor 72 is started to drive the tooth plate 6 to move transversely and reciprocally, the tooth plate 6 will drive the long gear 5 to rotate in small amplitude and in forward and reverse directions when reciprocally moving, the long gear 5 will drive the sample separation box 1 to rotate when rotating, so that the internal sample shakes, when the sample is uniformly mixed and stationary, at this time the liquid level height on both sides of the separation frame 8 is consistent, then the first rotating handle 28 is turned to drive the baffle 11 to move to the left, so that all the through holes 9 are blocked, then the dust cover 25 is opened, the sample separation box 1 is removed, and the specified proportion of the separated sample is poured out from the sample outlet 16, the operation is simple.

Claims

1. A plankton subsampler comprising a subsampling cassette (1), characterized in that: The bottom of the sample dividing box (1) is provided with a U-shaped plate (3), the lower end of the U-shaped plate (3) is rotatably connected with a shell (2), the inside of the U-shaped plate (3) is fixedly provided with a fixed rod (4), the surface of the fixed rod (4) is fixedly sleeved with a long gear (5), the top of the shell (2) is provided with a toothed plate (6), and the inside of the shell (2) is provided with a driving mechanism (7) capable of driving the toothed plate (6) to reciprocate. The top of the sample dividing box (1) is provided with a first opening (30) and a second opening (31), the inside of the left side of the sample dividing box (1) is placed with a partition frame (8), the inside of the partition frame (8) is rotatably connected with a first screw rod (10), the second opening (31) is provided with a fixed frame (12), the inside of the fixed frame (12) is rotatably connected with a second screw rod (13), the surface of the second screw rod (13) is threadedly connected with a connecting plate (14), and the bottom of the connecting plate (14) is fixedly connected with the top of the partition frame (8) through the second opening (31). The top of the sample dividing box (1) is respectively provided with a sample inlet (15) and a sample outlet (16), one side of the top of the partition frame (8) is provided with a protruding portion and extends out of the first opening (30), the partition frame (8) is slidably and sealingly provided with a baffle (11), the first screw rod (10) is threadedly connected with the baffle (11), the upper end of the baffle (11) extends into the protruding portion, and the front and back of the partition frame (8) on the left side of the baffle (11) are both provided with a through hole (9).

2. A plankton subsampler according to claim 1, characterised in that The driving mechanism (7) comprises a reciprocating screw rod (71), one end of the reciprocating screw rod (71) is rotatably connected with the inside of the shell (2) through a bearing, the other end of the reciprocating screw rod (71) is fixedly sleeved with a motor (72), the surface of the motor (72) is threadedly connected with a threaded plate (73), and the top of the threaded plate (73) is fixedly connected with the bottom of the toothed plate (6) through a fixing piece.

3. A plankton subsampler according to claim 2, wherein The inside of the shell (2) is bolted with a sliding rail (17), and the bottom of the threaded plate (73) is fixedly connected with a sliding block (18) in sliding connection with the sliding rail (17).

4. A plankton subsampler according to claim 1, wherein The front of the shell (2) is provided with a heat dissipation groove (19), and the inside of the heat dissipation groove (19) is provided with a dustproof net (20).

5. A plankton subsampler according to claim 1, wherein One side of the baffle (11) is provided with a first limiting rod (21) penetrating through, and both ends of the first limiting rod (21) are fixedly connected with the inside of the partition frame (8).

6. A plankton subsampler according to claim 1, wherein The front of the connecting plate (14) is provided with a second limiting rod (22) penetrating through, and both ends of the second limiting rod (22) are fixedly connected with the inside of the fixed frame (12).

7. A plankton subsampler according to claim 1, wherein The top of the sample dividing box (1) located in the second opening (31) is integrally stamped with a scale line (23), and one side of the connecting plate (14) close to the scale line (23) is provided with a pointing block (24).

8. A plankton subsampler according to claim 1, wherein, The top of the sample dividing box (1) is placed with a dustproof cover (25), the top of the sample dividing box (1) is inlaid with a first magnetic block (26), and the bottom of the dustproof cover (25) is inlaid with a second magnetic block (27) magnetically connected with the first magnetic block (26).

9. A plankton subsampler according to claim 1, wherein, The other end of the first screw rod (10) is fixed with a first handle (28), and the other end of the second screw rod (13) is fixed with a second handle (29).

Images