Rotary colorimetric disk and soil detector

Abstract

The utility model provides a rotary colorimetric disc and a soil detector, and belongs to the technical field of soil detection equipment. The rotary colorimetric disc comprises a disc body and channels which are arranged on the disc body, distributed in a central symmetry mode and used for containing cuvettes, every two adjacent channels are communicated through a penetrating groove, and clamping blocks extending into the channels are arranged on the two sides of each penetrating groove in a sliding mode. A force transmission part for driving the clamping blocks to synchronously slide in the through grooves is jointly connected between the two clamping blocks corresponding to the same through groove, all the force transmission parts are distributed in a central symmetry mode, and a driving part for driving all the force transmission parts to synchronously act is arranged in the center of the disc body. The cuvette has the advantages that the cuvette is convenient to plug and unplug, and the operation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology, specifically to a rotating colorimetric disk and a soil testing instrument. Background Technology

[0002] Soil testing, as a major component of environmental monitoring, is widely applied in soil testing instruments. These instruments detect the content of various nutrients and trace elements in the soil and display the data. Currently, the most mainstream soil testing instrument is the rapid soil nutrient test instrument. It mainly includes a control module, a detection module, a display module, a thermal printing module, and a colorimetric cell. The rotating colorimetric disk within the colorimetric cell is used to hold the sample being tested.

[0003] Currently, the mainstream rotating colorimetric disk uses a plug-in method for cuvette insertion. During testing, the cuvette containing the sample is directly inserted into the channel of the rotating colorimetric disk. After testing, the cuvette is simply pulled out of the channel. The smoothness of this insertion and removal process directly affects the ease of operation. In existing technology, the channel design is extremely simple, consisting of a groove-like structure on the rotating colorimetric disk. The stability of the channel relative to the cuvette relies on the channel's dimensions being precisely matched to the cuvette's size during manufacturing. This results in a significant jolt during insertion and removal of the cuvette in actual operation. Friction between the cuvette and the channel's inner wall, along with manual operation, makes it difficult to maintain the cuvette's perpendicular position, leading to a jerky insertion and removal process that is detrimental to long-term operation. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a rotating colorimetric disk that makes it easier to insert and remove colorimetric cuvettes, and a soil testing instrument using the rotating colorimetric disk.

[0005] The technical solution of this utility model is implemented as follows:

[0006] The first aspect of this utility model provides a rotating colorimeter, including a disc body and channels arranged on the disc body in a centrally symmetrical manner for placing colorimetric cuvettes. Adjacent channels are connected by through grooves. Clamping blocks extending into the channels are slidably arranged on both sides of the through grooves. A force transmission part is connected between two clamping blocks corresponding to the same through groove to drive the clamping blocks to slide synchronously in the through groove. All force transmission parts are centrally symmetrically distributed, and a driving part is arranged at the center of the disc body to drive all force transmission parts to move synchronously.

[0007] Furthermore, the through groove is an arc-shaped groove coaxial with the disc body, and the clamping block is provided with an arc-shaped slider that slides in cooperation with the arc-shaped groove. One end of the force transmission part is connected to the arc-shaped slider.

[0008] Furthermore, the force transmission part includes a force transmission frame, a force transmission block and a hinge plate. The force transmission frame is arranged in a "C" - shaped structure. There are strip - shaped grooves in the disc body for the two parallel sides of the force transmission frame to slide. The force transmission block is arranged on the inner surface of the vertical side of the force transmission frame, and the top of the force transmission block is set to have an inclined surface that slopes towards the center of the disc from the inner surface of the vertical side of the force transmission frame. Two hinge plates are arranged at the outer ends of the parallel sides respectively. The inner ends of the two hinge plates are coaxially hinged on the parallel sides, and the outer ends of the two hinge plates are respectively hinged to two arc - shaped sliders in the same through - groove.

[0009] Furthermore, a radial spring is fixed on the outer surface of the vertical side of the force transmission frame, and there is a spring groove for accommodating the radial spring corresponding to each radial spring in the disc body.

[0010] Furthermore, a column - shaped groove is arranged at the center of the disc body, and the vertical side of the force transmission part is located in the column - shaped groove;

[0011] The driving part includes a lifting part with a frustum - shaped outer side surface adapted to the inclined surface and a guide rod arranged in the column - shaped groove, and the lifting part is slidably sleeved on the guide rod.

[0012] Furthermore, the guide rod is fixedly arranged on the disc body, and the guide rod includes a threaded section and a smooth section from top to bottom. The lifting part is slidably sleeved on the smooth section, and a threaded sleeve for driving the lifting part to move up and down is threadedly connected to the threaded section.

[0013] Furthermore, the top diameter of the lifting part is larger than that of the threaded sleeve, and the top slot of the column - shaped groove is set to be adapted to the outer diameter of the threaded sleeve.

[0014] Furthermore, an annular groove with an inner - ring size larger than the guide rod is arranged at the bottom end of the lifting part, and an axial spring with its bottom end extending out of the annular groove and supporting on the disc body is fixed on the top wall of the annular groove.

[0015] Another aspect of the present utility model also provides a soil detector, including the above - mentioned rotating colorimetric disc. The rotating colorimetric disc is arranged in a cavity on one side of the soil detector, and a cover plate is arranged at the top of the cavity.

[0016] Furthermore, when the cover plate is closed, it contacts the top of the threaded sleeve located at the lowest position.

[0017] The present utility model has the following beneficial effects:

[0018] 1. By improving the channel, making use of the two clamping blocks arranged in the channel having a maximum distance and a minimum distance. When in the maximum - distance state, it is convenient to insert and remove the colorimetric dish, and when in the minimum - distance state, the colorimetric dish can be firmly clamped, improving the smoothness of inserting and removing the colorimetric dish, reducing the operation difficulty, and making it more convenient to operate.

[0019] 2. The switching between the maximum and minimum distances of the two clamping blocks in all channels is carried out synchronously by the drive unit. The structure is ingenious, easy to operate, and highly efficient. Attached Figure Description

[0020] Figure 1 This is an overall schematic diagram of the rotating colorimeter of this utility model;

[0021] Figure 2 This is a schematic diagram showing the disassembled rotating colorimeter of this utility model;

[0022] Figure 3 This is a rotating colorimeter of the present invention. Figure 2 Enlarged view of point A in the image;

[0023] Figure 4 This is another perspective view of the exploded view of the rotating colorimeter of this utility model;

[0024] Figure 5 This is an overall schematic diagram of the force transmission part and clamping block of the rotating colorimeter of this utility model.

[0025] Figure 6 This is a rotating colorimeter of the present invention. Figure 5 Enlarged view of point B in the image;

[0026] Figure 7 This is a schematic diagram of the force transmission part of the rotating colorimeter of this utility model;

[0027] Figure 8 This is a schematic diagram of the lifting part of the rotating colorimeter of this utility model;

[0028] Figure 9 This is a schematic diagram of the soil testing instrument of this utility model. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Please refer to Figures 1 to 8 As shown, the rotating colorimeter provided in the embodiment of this utility model mainly includes a disc body 1, a channel 2 provided on the disc body 1 for preventing the colorimeter cuvettes, a clamping block 4 provided corresponding to the channel 2 for clamping the colorimeter cuvettes from both sides, a force transmission part 5 for driving the clamping block 4 to clamp / release the colorimeter cuvettes, and a driving part 6 for driving the force transmission part 5 to move.

[0031] Channels 2 are centrally symmetrically distributed on the disc body 1, and adjacent channels 2 are connected by through grooves 3. In this embodiment, the channels 2 are configured to fit the shape of the cuvette. Preferably, a cuvette with two opposing planes and two concave arc surfaces is used. When the cuvette is placed in the channel 2, the two planes are located radially on the cuvette and the other two concave arc surfaces are located circumferentially on the cuvette. The inner wall shape of the channels 2 on both sides of the disc body 1 is adapted to the cuvette.

[0032] The through groove 3 is located inside the disk body 1 along the axial direction, so that both ends of the through groove 3 along the axial direction of the disk body 1 are closed. The through groove 3 has an arc-shaped structure with the center of the disk body 1 as the center.

[0033] Clamping blocks 4 are slidably disposed on both sides of the through groove 3, extending into the channel 2. The two clamping blocks 4 are symmetrically distributed with respect to the same through groove 3, and the opposite ends of the two clamping blocks 4 are located inside the channel 2. At this time, the through groove 3 is used to guide the displacement of the clamping blocks 4 in the channel 2, and to ensure that there is a minimum distance and a maximum distance between the two clamping blocks 4 corresponding to the two sides of the same channel 2. The minimum distance is adapted to the size of the cuvette, and the maximum distance is set to be greater than the size of the cuvette. When the two clamping blocks 4 on both sides of the same channel 2 are at the minimum distance, they are used to clamp the cuvette; when the two clamping blocks 4 on both sides of the same channel 2 are at the maximum distance, they are used to place the cuvette.

[0034] In this embodiment of the invention, a force transmission part 5 is connected between two clamping blocks 4 corresponding to the same through slot 3. The force transmission part 5 is used to drive the two clamping blocks 4 to move synchronously within the through slot 3. All the force transmission parts 5 are centrally symmetrically distributed on the disc body 1, and a drive part 6 is located at the center of the disc body 1 to drive all the force transmission parts 5 to move synchronously. At this time, by simply operating the drive part 6, all the force transmission parts 5 can be synchronously moved, controlling all the clamping blocks 4 to extend into their respective channels 2 or retract into their respective through slots 3. This achieves synchronous control of all the clamping blocks 4 within the channels 2 switching between minimum and maximum distances.

[0035] In an embodiment of the present utility model, a clamping block 4 that can be switched between a minimum distance and a maximum distance is provided in the channel 2. When placing the colorimetric cuvette into the channel 2 and taking the colorimetric cuvette out of the channel 2, the two clamping blocks 4 in the channel 2 can be adjusted to the state of the maximum distance, so as to reduce the sense of jerk generated by the contact between the colorimetric cuvette and the inner wall surface of the channel 2, making it more convenient to operate, and at the same time preventing the sample liquid and the standard liquid from spilling onto the rotating colorimetric disc. After the colorimetric cuvette is placed into the channel 2, the two clamping blocks 4 in the channel 2 can be adjusted to the state of the minimum distance, so that the clamping block 4 stably holds the colorimetric cuvette in the channel 2, in order to ensure the stability of the colorimetric cuvette on the rotating colorimetric disc. In addition, for the switching of the clamping block 4 in the channel 2 between the two states of the minimum distance and the maximum distance, only the driving part 6 needs to be operated, and when the driving part 6 is operated, the clamping blocks 4 in all the channels 2 on the rotating colorimetric disc act synchronously, achieving the effect of simultaneous loosening / holding. The operation is simpler and the effect is prominent.

[0036] Among them, an arc-shaped slider 7 that is slidably matched with the arc-shaped groove is provided on the clamping block 4, and one end of the force transmission part 5 is connected to the arc-shaped slider 7. At this time, the whole clamping block 4 can be located in the channel 2 and is supported by the arc-shaped slider 7. When the force transmission part 5 acts, it drives the arc-shaped slider 7 to displace in the through groove 3, and further drives the clamping block 4 to act in the channel 2. In this embodiment, when the whole arc-shaped slider 7 is located in the through groove 3, the clamping block 4 contacts the side inner wall in the circumferential direction of the channel 2. At this time, the two clamping blocks 4 in the channel 2 are in the state of the maximum distance.

[0037] In this embodiment, the force transmission part 5 includes a force transmission frame 5.1, a force transmission block 5.2 and a hinge plate 5.3. The force transmission frame 5.1 serves as the overall support structure of the force transmission part 5 and is used to install and support the force transmission block 5.2 and the hinge plate 5.3.

[0038] Specifically, the force transmission frame 5.1 is arranged in a "C" - shaped structure, which includes two parallel sides distributed vertically in the axial direction of the disc body 1 and a vertical side located between the ends of the two parallel sides close to the center of the disc body 1. The parallel sides coincide with one of the diameter lines of the disc body 1 in the radial direction.

[0039] A strip-shaped groove 8 that is adapted to the parallel sides and is used for the parallel sides to slide is provided in the disc body 1. The outer end of the strip-shaped groove 8 is communicated with the through groove 3. When the force transmission part 5 acts, the parallel sides slide in the strip-shaped groove 8.

[0040] The force transmission block 5.2 is arranged on the inner surface of the vertical side of the force transmission frame 5.1. Here, the inner surface of the vertical side refers to the side surface of the vertical side facing the center of the disc body 1. Furthermore, the force transmission blocks 5.2 on all the force transmission parts 5 are distributed in a center - offset manner in the disc body 1. The force transmission block 5.2 is also arranged such that its top end is inclined downward towards the center of the disc body 1 from the inner surface of the vertical side of the force transmission frame 5.1. When a downward pressure is applied to this inclined surface, it drives the force transmission frame 5.1 to displace outward.

[0041] Two hinge plates 5.3 are provided on the outer ends of the parallel sides, and the two hinge plates 5.3 are respectively provided for the two arc-shaped sliders 7 in the same through groove 3. Specifically, the inner ends of the two hinge plates 5.3 are coaxially hinged to the outer ends of the parallel sides, and the outer ends of the two hinge plates 5.3 are respectively hinged to the two arc-shaped sliders 7 in the same through groove 3.

[0042] In this embodiment, when the force transmission frame 5.1 moves outward, it drives the two clamping blocks 4 corresponding to the same through slot 3 to extend into their respective channels 2, thereby reducing the distance between the two clamping blocks 4 in the same channel 2 and achieving the function of clamping the cuvette. At this time, the operation process of the transmission part when the inclined surface of the force transmission block 5.2 is subjected to downward pressure is also described.

[0043] Furthermore, a radial spring 9 is fixed to the outer surface of the vertical side of the force transmission frame 5.1, and the radial spring 9 is arranged parallel to the force transmission frame 5.1. The outer surface of the vertical side referred to here is the side opposite to the inner surface of the aforementioned vertical side. A spring groove is provided inside the disc body 1 to accommodate each radial spring 9. When the force transmission frame 5.1 moves outward, it continuously compresses the radial spring 9 into the spring groove. When the inclined surface of the force transmission block 5.2 loses the downward pressure, the radial spring 9 drives the force transmission part 5 to return to its original position, causing the two clamping blocks 4 in the same channel 2 to return to their maximum distance.

[0044] Furthermore, a columnar groove 10 is provided at the center of the disc body 1, and the vertical edge of the force transmission part 5 is located within the columnar groove 10. The drive part 6 includes a lifting part 6.1 with an outer surface adapted to the inclined plane in the shape of a frustum, and a guide rod 6.2 provided within the columnar groove 10, and the lifting part 6.1 is slidably sleeved on the guide rod 6.2.

[0045] In this embodiment, the top of the lifting part 6.1 extends upward to form a cylindrical structure, and the bottom end of the guide rod 6.2 is fixed to the disc body 1. Specifically, the bottom end of the guide rod 6.2 is fixed to the inner bottom wall of the columnar groove 10. By controlling the vertical displacement of the lifting part 6.1 within the columnar groove 10, the effect of driving the transmission part to move is achieved.

[0046] Furthermore, the guide rod 6.2 in this embodiment includes a threaded section and a smooth section from top to bottom. The lifting part 6.1 is slidably sleeved on the smooth section, and the threaded section is externally threaded with a threaded sleeve 11 for driving the lifting part 6.1 to move up and down.

[0047] Specifically, the threaded sleeve 11 is configured with a closed top and an open bottom, with a threaded groove at the bottom for threaded connection with the threaded section. The bottom of the threaded sleeve 11 can rotate to engage with the top of the lifting part 6.1. By directly rotating the threaded sleeve 11, the lifting part 6.1 can be pressed down or raised, thereby driving the clamping block 4 to move. Simultaneously, the real-time fixing effect of the threaded engagement between the threaded sleeve 11 and the threaded section provides a locking effect for the lifting part 6.1.

[0048] Furthermore, the top diameter of the lifting part 6.1 is larger than that of the threaded sleeve 11, and the top opening of the columnar groove 10 is designed to match the outer diameter of the threaded sleeve 11. In this case, the threaded sleeve 11 completely closes the top opening of the columnar groove 10. This improves the overall aesthetics, and at the same time, the guiding and limiting effect of the columnar groove 10 on the threaded sleeve 11 provides support for the top of the guide rod 6.2.

[0049] The bottom end of the lifting part 6.1 is provided with an annular groove 12, the inner circle of which is larger than that of the guide rod 6.2. An axial spring 13, with its bottom end extending out of the annular groove 12 and supported on the disc body 1, is fixed to the top wall of the annular groove 12. At this time, the bottom end of the axial spring 13 can be directly fixed to the inner bottom wall of the columnar groove 10. The axial spring 13 has an upward elastic force on the lifting part 6.1, which is better used for the upward recovery process of the lifting part 6.1.

[0050] Please refer to Figure 9 As shown, another embodiment of the present invention also provides a soil tester having a cavity 14 in which the aforementioned rotating colorimetric disk is disposed. The top of the cavity 14 is open and fitted with a cover plate 15, which, when closed, contacts the top of the threaded sleeve 11 at its lowest position.

[0051] At this time, because the soil testing instrument in the prior art is set so that the colorimetric disc cannot be started to rotate for soil nutrient testing when the cover plate 15 is open, in this embodiment, the limiting effect of the cover plate 15 on the top of the threaded sleeve 11 is used to keep the two clamping blocks 4 in the channel 2 in a state of holding the colorimetric cuvette.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotating colorimeter, comprising a disc body (1) and channels (2) arranged symmetrically on the disc body (1) for placing colorimetric cuvettes, characterized in that, Two adjacent channels (2) are connected through a through groove (3). On both sides of the through groove (3), clamping blocks (4) extending into the channel (2) are slidably arranged. A force transmission part (5) for driving the clamping blocks (4) to slide synchronously in the through groove (3) is commonly connected between the two clamping blocks (4) corresponding to the same through groove (3). All the force transmission parts (5) are symmetrically distributed about the center, and a driving part (6) for driving all the force transmission parts (5) to act synchronously is arranged at the center of the disk body (1).

2. A rotating colorimeter according to claim 1, characterized in that, The through groove (3) is an arc-shaped groove coaxial with the disk body (1). An arc-shaped slider (7) slidably matched with the arc-shaped groove is arranged on the clamping block (4), and one end of the force transmission part (5) is connected with the arc-shaped slider (7).

3. A rotating colorimeter according to claim 2, characterized in that, The force transmission part (5) includes a force transmission frame (5.1), a force transmission block (5.2) and a hinge plate (5.3). The force transmission frame (5.1) is arranged in a "C" - shaped structure. A strip-shaped groove (8) for the two parallel sides of the force transmission frame (5.1) to slide is arranged in the disk body (1). The force transmission block (5.2) is arranged on the inner surface of the vertical side of the force transmission frame (5.1), and the top of the force transmission block (5.2) is set to be an inclined plane inclined towards the center of the disk body (1) downward from the inner surface of the vertical side of the force transmission frame (5.1). Two hinge plates (5.3) are arranged at the outer ends of the parallel sides respectively. The inner ends of the two hinge plates (5.3) are coaxially hinged on the parallel sides, and the outer ends of the two hinge plates (5.3) are respectively hinged with the two arc-shaped sliders (7) in the same through groove (3).

4. A rotating colorimeter according to claim 3, characterized in that, A radial spring (9) is fixed on the outer surface of the vertical side of the force transmission frame (5.1), and a spring groove for accommodating the radial spring (9) is arranged in the disk body (1) corresponding to each radial spring (9).

5. A rotating colorimeter according to claim 3, characterized in that, A columnar groove (10) is arranged at the center of the disk body (1), and the vertical side of the force transmission part (5) is located in the columnar groove (10). The driving part (6) includes a lifting part (6.1) with a conical shape on the outer side surface adapted to the inclined plane and a guide rod (6.2) arranged in the columnar groove (10), and the lifting part (6.1) is slidably sleeved on the guide rod (6.2).

6. A rotating colorimeter according to claim 5, characterized in that, The guide rod (6.2) is fixedly arranged on the disk body (1), and the guide rod (6.2) includes a threaded section and a smooth section from top to bottom. The lifting part (6.1) is slidably sleeved on the smooth section, and a threaded sleeve (11) for driving the lifting part (6.1) to move up and down is externally threaded on the threaded section.

7. A rotating colorimeter according to claim 6, characterized in that, The top diameter of the lifting part (6.1) is larger than that of the threaded sleeve (11), and the top slot opening of the columnar groove (10) is set to be adapted to the outer diameter of the threaded sleeve (11).

8. A rotating colorimeter according to claim 5, characterized in that, An annular groove (12) with an inner ring size larger than the guide rod (6.2) is arranged at the bottom end of the lifting part (6.1), and an axial spring (13) with the bottom end extending out of the annular groove (12) and supporting on the disk body (1) is fixed on the inner top wall of the annular groove (12).

9. A soil testing instrument, comprising the rotating colorimetric disk as described in any one of claims 1 to 8, characterized in that, The rotating colorimetric disk is arranged in a side cavity (14) of the soil detector, and a cover plate (15) is arranged at the top end of the cavity (14).

10. A soil testing instrument according to claim 9, characterized in that, When the cover plate (15) is closed, it contacts the top end of the threaded sleeve (11) located at the lowest position.

Images