Sample drying device for environmental monitoring
By designing a multi-stage drying device, the structural damage and poor drying effect caused by drying samples in an exposed state were solved, achieving efficient and precise drying of samples.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIYUAN HANSHENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-06-09
AI Technical Summary
In existing environmental monitoring drying equipment, the direct exposure of samples during drying leads to structural damage, and the single drying effect is poor, affecting the accuracy of the results.
A multi-stage drying device was designed, including a transfer component, a feeding component, a screening component, a primary drying component, and a secondary drying component. The device uses multi-stage drying and slow heating to process the sample, thus avoiding the impact of rapid heating on the sample.
Multi-stage drying of samples was achieved, ensuring the drying effect while protecting the sample structure and improving the accuracy of the results.
Smart Images
Figure CN224340608U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of drying equipment, and in particular to a sample drying device for environmental monitoring. Background Technology
[0002] Environmental monitoring refers to the activities of environmental monitoring agencies in monitoring and measuring the status of environmental quality. By monitoring and measuring indicators that reflect environmental quality, the level of environmental pollution and the quality of the environment can be determined.
[0003] In the environmental monitoring measurement process, the collected samples need to be processed in order to obtain the required data, and drying the samples is a routine operation.
[0004] However, in the existing technology, when drying samples, the samples are generally placed directly in the control heat source in the drying oven for drying. The rapid heating of the sample in the exposed state can easily cause subtle effects on the sample structure, thereby affecting the accuracy of the results. In addition, the drying equipment in the existing technology usually only uses a single drying process when drying the sample, which affects the drying effect of the sample.
[0005] Therefore, there is an urgent need to redesign a new sample drying device for environmental monitoring to solve the above problems. Utility Model Content
[0006] This invention provides a sample drying device for environmental monitoring to solve the technical problems mentioned in the background section.
[0007] This utility model provides a sample drying device for environmental monitoring. The sample drying device includes a drying main body, a transfer component for transferring the sample to be dried, a feeding component for feeding the sample to be dried, a screening component for screening the size of the sample to be dried, a primary drying component for performing a first drying action on the sample to be dried, a secondary drying component for performing a second drying action on the sample to be dried, and a discharge part. The transfer component is installed inside the drying main body, the feeding component is installed at one end of the drying main body, the screening component is installed on one side of the feeding component, the primary drying component is installed on the side of the screening component away from the feeding component, the secondary drying component is installed on the side of the primary drying component away from the screening component, and the discharge part is installed at the other end of the drying main body.
[0008] Optionally, the transfer assembly includes a transfer main shaft, a transfer driven shaft, a transfer part, a transfer drive chain, and a transfer motor. The transfer main shaft is rotatably connected to one end of the drying main body, the transfer driven shaft is rotatably connected to the other end of the drying main body, the transfer part is installed between the transfer main shaft and the transfer driven shaft, the transfer motor is installed inside the drying main body, and the transfer drive chain is installed between the output end of the transfer motor and one end of the transfer main shaft.
[0009] Optionally, the drying main body is rotatably connected with a first tensioning part and a second tensioning part to ensure the tension of the transfer part.
[0010] Optionally, the feeding assembly includes multiple feeding pillars, multiple feeding buffers, and a feeding hopper. The multiple feeding pillars are all installed on the drying main body. One end of the feeding buffer is connected to the upper end of the feeding pillar, and the other end of the feeding buffer is connected to the feeding hopper.
[0011] Optionally, the feed hopper is equipped with a plurality of screening rods for screening samples to be dried, and the plurality of screening rods are installed at equal intervals in the feed hopper.
[0012] Optionally, a feeding adjustment assembly is installed on the lower side of the feeding hopper; the feeding adjustment assembly includes a feeding tray, a first feeding limit part, a second feeding limit part, and a limiting strip. One side of the feeding tray is rotatably connected to the lower side of the feeding hopper, the first feeding limit part is threadedly connected to one side of the feeding tray, the second feeding limit part is threadedly connected to one side of the feeding hopper, and the limiting strip is installed between the first feeding limit part and the second feeding limit part.
[0013] Optionally, the screening assembly includes a screening main body, a screening limiting part, a plurality of first screening rods and a plurality of second screening rods. The screening main body is mounted on the drying main body, the screening limiting part is mounted on the lower side of the screening main body, and the plurality of first screening rods and the plurality of second screening rods are mounted at equal intervals on the lower side of the screening limiting part.
[0014] Optionally, a first screening gap is formed between each pair of the first screening rods, and a second screening gap is formed between each pair of the second screening rods.
[0015] Optionally, the primary drying assembly includes a primary drying support, a primary drying chamber, a primary drying sliding part, a primary drying heating grid, and an adjustment assembly for driving the movement of the primary drying sliding part. The primary drying support is mounted on the primary drying body, the primary drying chamber is mounted on the primary drying support, the primary drying sliding part is slidably connected inside the primary drying chamber, the primary drying heating grid is mounted on the primary drying sliding part, and the adjustment assembly is mounted inside the primary drying chamber, with its output end connected to the primary drying sliding part. The adjustment assembly includes multiple drive cylinders and multiple drive connecting rods. The drive cylinders are mounted inside the primary drying chamber, one end of each drive connecting rod is connected to its output end, and the other end is connected to the primary drying sliding part.
[0016] Optionally, the secondary drying assembly includes a secondary drying support, a first drying container, a first drying fan, a second drying container, and a second drying fan. The secondary drying support is mounted on the main drying body. The first drying container and the second drying container are both mounted on the secondary drying support. The first drying fan is connected inside the first drying container, and the second drying fan is connected inside the second drying container.
[0017] The beneficial effects of this utility model are as follows:
[0018] This environmental monitoring sample drying device includes a drying main body, a transfer assembly for transferring the sample to be dried, a feeding assembly for feeding the sample to be dried, a screening assembly for screening the sample size, a primary drying assembly for performing the first drying action on the sample, a secondary drying assembly for performing the second drying action on the sample, and a discharge section. The transfer assembly is installed inside the drying main body, the feeding assembly is installed at one end of the drying main body, the screening assembly is installed on one side of the feeding assembly, the primary drying assembly is installed on the side of the screening assembly away from the feeding assembly, the secondary drying assembly is installed on the side of the primary drying assembly away from the screening assembly, and the discharge section is installed at the other end of the drying main body. This environmental monitoring sample drying device achieves multi-stage drying of the sample through the interlocking of these structures, thus ensuring the drying effect. Simultaneously, the primary drying assembly can slowly heat and dry the sample according to different sample characteristics, thereby avoiding the impact of rapid temperature increases on the sample. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a first-view structural schematic diagram of the sample drying device for environmental monitoring provided by this utility model;
[0021] Figure 2 yes Figure 1 A magnified view of a portion of region A in the middle;
[0022] Figure 3 This is a schematic diagram of the screening component of the sample drying device for environmental monitoring provided by this utility model;
[0023] Figure 4 This is a second-view structural schematic diagram of the sample drying device for environmental monitoring provided by this utility model;
[0024] Figure 5 yes Figure 4 A magnified view of a portion of region B in the middle;
[0025] Figure 6 This is a third-view structural schematic diagram of the sample drying device for environmental monitoring provided by this utility model;
[0026] Figure 7 yes Figure 6 A magnified view of a portion of region C in the middle;
[0027] Figure 8 yes Figure 6 A magnified view of a portion of region D in the middle;
[0028] Figure 9 This is a fourth-view structural schematic diagram of the sample drying device for environmental monitoring provided by this utility model;
[0029] Figure 10 yes Figure 9 A magnified view of a portion of region E in the middle. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to the present utility model are shown in the drawings, not all of the structures. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0032] Please see Figures 1 to 10 The sample drying device for environmental monitoring of this utility model includes a drying main body 1000, a transfer component 2000 for transferring the sample to be dried, a feeding component 3000 for feeding the sample to be dried, a screening component 4000 for screening the size of the sample to be dried, a primary drying component 5000 for performing the first drying action on the sample to be dried, a secondary drying component 6000 for performing the second drying action on the sample to be dried, and a discharge part 7000. The transfer component 2000 is installed inside the drying main body 1000, the feeding component 3000 is installed at one end of the drying main body 1000, the screening component 4000 is installed on one side of the feeding component 3000, the primary drying component 5000 is installed on the side of the screening component 4000 away from the feeding component 3000, the secondary drying component 6000 is installed on the side of the primary drying component 5000 away from the screening component 4000, and the discharge part 7000 is installed at the other end of the drying main body 1000.
[0033] The drying main body 1000 provides fixed support for all the structures in the sample drying device for environmental monitoring of this utility model.
[0034] When a user needs to use the sample drying device for environmental monitoring of this utility model to dry a sample, the user first puts the sample to be dried into the feeding component 3000. The sample to be dried passes through the feeding component 3000 and enters the transfer component 2000. The transfer component 2000 carries the sample to be dried through the screening component 4000, the primary drying component 5000 and the secondary drying component 6000 in sequence, and then enters the equipment for drying the sample from the discharge section 7000.
[0035] Specifically, when the sample moves through the screening component 4000 along with the transfer component 2000, the screening component 4000 can screen the sample size to ensure that the size of the dried sample meets the subsequent production requirements. Then, the sample enters the primary drying component 5000 and the secondary drying component 6000 in sequence, and the primary drying component 5000 and the secondary drying component 6000 respectively perform drying operations on the sample.
[0036] In this embodiment, the transfer assembly 2000 includes a transfer main shaft 2100, a transfer driven shaft 2200, a transfer section 2300, a transfer drive chain 2400, and a transfer motor 2500. The transfer main shaft 2100 is rotatably connected to one end of the drying main body 1000, and the transfer driven shaft 2200 is rotatably connected to the other end of the drying main body 1000. The transfer section 2300 is installed between the transfer main shaft 2100 and the transfer driven shaft 2200. The transfer motor 2500 is installed inside the drying main body 1000, and the transfer drive chain 2400 is installed between the output end of the transfer motor 2500 and one end of the transfer main shaft 2100.
[0037] When the transfer component 2000 needs to drive the movement of the sample to be dried, firstly, the transfer motor 2500 enters the working state. The output end of the transfer motor 2500 drives the transfer drive chain 2400 to rotate, thereby the transfer drive chain 2400 drives the transfer main shaft 2100 to rotate. Then, the transfer main shaft 2100 drives the transfer part 2300 to rotate between the transfer main shaft 2100 and the transfer driven shaft 2200, thereby the transfer part 2300 drives the sample to move together.
[0038] It is worth noting that the transfer unit 2300 can be made of high-temperature resistant conveyor belts or similar structures.
[0039] In this embodiment, the drying main body 1000 is rotatably connected to a first tensioning part 1100 and a second tensioning part 1200 for ensuring the tension of the transfer part 2300.
[0040] The first tensioning part 1100 and the second tensioning part 1200 are installed inside the drying main body 1000. The first tensioning part 1100 and the second tensioning part 1200 are used to ensure the tension of the transfer part 2300, thereby ensuring the support and lifting effect of the transfer part 2300 on the sample.
[0041] In this embodiment, the feeding assembly 3000 includes a plurality of feeding support columns 3100, a plurality of feeding buffer sections 3200, and a feeding hopper 3300. The plurality of feeding support columns 3100 are all installed on the drying main body 1000. One end of the feeding buffer section 3200 is connected to the upper end of the feeding support column 3100, and the other end of the feeding buffer section 3200 is connected to the feeding hopper 3300.
[0042] Among them, the feeding support column 3100 plays a fixed support role for all the structures in the feeding assembly 3000. When the sample to be dried needs to enter the feeding assembly 3000, the sample to be dried first enters the feeding hopper 3300 through external equipment.
[0043] Furthermore, the feed buffer 3200 can be a spring, which can buffer the pressure of the feed hopper 3300 to a certain extent, thereby ensuring that the impact force is reduced when the sample enters the feed hopper 3300, thus ensuring the integrity of the sample.
[0044] In this embodiment, a plurality of screening rods 3400 for screening samples to be dried are installed inside the feed hopper 3300, and the plurality of screening rods 3400 are installed at equal intervals inside the feed hopper 3300.
[0045] Among them, multiple screening rods 3400 can, to a certain extent, ensure that extra-large samples do not fall into the feed hopper 3300.
[0046] In this embodiment, a feeding adjustment assembly is installed on the lower side of the feeding hopper 3300; the feeding adjustment assembly includes a feeding support plate 3510, a first feeding limit part 3520, a second feeding limit part 3530, and a limiting strip 3540. One side of the feeding support plate 3510 is rotatably connected to the lower side of the feeding hopper 3300, the first feeding limit part 3520 is threadedly connected to one side of the feeding support plate 3510, the second feeding limit part 3530 is threadedly connected to one side of the feeding hopper 3300, and the limiting strip 3540 is installed between the first feeding limit part 3520 and the second feeding limit part 3530.
[0047] The feeding adjustment component is used to adjust the angle between the feeding tray 3510 and the feeding port of the feeding hopper 3300, so as to limit the size of the sample to a certain extent.
[0048] Specifically, when the user needs to adjust the angle between the discharge tray 3510 and the feed hopper 3300, firstly, the second discharge limiting part 3530 is rotated out of the feed hopper 3300, so that one end of the limiting strip 3540 can move. Then, the user rotates the discharge tray 3510 to the required angle, and then rotates the second discharge limiting part 3530 back into the feed hopper 3300 until the second discharge limiting part 3530 locks the limiting strip 3540 on one side of the feed hopper 3300. This changes the orientation of the discharge tray 3510, thereby changing the gap between the discharge tray 3510 and the discharge port of the feed hopper 3300. This allows the user to perform size screening on the samples after they have been discharged from the feed hopper 3300 to a certain extent.
[0049] In this embodiment, the screening component 4000 includes a screening main body 4100, a screening limiting part 4200, a plurality of first screening rods 4300 and a plurality of second screening rods 4400. The screening main body 4100 is mounted on the drying main body 1000, the screening limiting part 4200 is mounted on the lower side of the screening main body 4100, and the plurality of first screening rods 4300 and the plurality of second screening rods 4400 are evenly spaced on the lower side of the screening limiting part 4200.
[0050] The screening main body 4100 provides fixed support for all structures within the screening assembly 4000, and the screening limiting part 4200 provides fixed support for the screening main body 4100. Multiple first screening rods 4300 and multiple second screening rods 4400 work together to screen the size of the passing samples. Samples that meet the requirements for subsequent production pass through the multiple first screening rods 4300 and multiple second screening rods 4400, while samples that do not meet the size requirements cannot pass through the first screening rods 4300 and the second screening rods 4400. When the number of unqualified samples is large enough, the user cleans them regularly to ensure that the screening assembly 4000 can screen samples normally.
[0051] In this embodiment, a first screening gap 4310 is formed between each pair of first screening rods 4300, and a second screening gap 4410 is formed between each pair of second screening rods 4400.
[0052] The user sets the width of the first screening gap 4310 and the second screening gap 4410 according to actual production needs;
[0053] Meanwhile, multiple first screening bars 4300 and multiple second screening bars 4400 can ensure the screening effect of the samples to be dried.
[0054] In this embodiment, the primary drying assembly 5000 includes a primary drying support 5100, a primary drying chamber 5200, a primary drying sliding part 5300, a primary drying heating mesh 5400, and an adjustment assembly for driving the primary drying sliding part 5300 to move. The primary drying support 5100 is mounted on the drying main body 1000, the primary drying chamber 5200 is mounted on the primary drying support 5100, the primary drying sliding part 5300 is slidably connected inside the primary drying chamber 5200, and the primary drying heating mesh 5400... The adjustment component is installed on the primary drying sliding part 5300, and the output end of the adjustment component is connected to the primary drying sliding part 5300. The adjustment component includes multiple drive cylinders 5510 and multiple drive connecting rods 5520. The drive cylinders 5510 are installed in the primary drying box 5200, one end of the drive connecting rod 5520 is connected to the output end of the drive cylinder 5510, and the other end of the drive connecting rod 5520 is connected to the primary drying sliding part 5300.
[0055] The primary drying support 5100 provides fixed support for all structures within the primary drying assembly 5000. When a sample transported on the transfer assembly 2000 passes through the primary drying assembly 5000, the sample first enters the primary drying chamber 5200 under the influence of the transfer assembly 2000.
[0056] It is worth noting that there is a certain gap between the primary drying chamber 5200 and the transfer component 2000 to ensure that the sample passes through the primary drying chamber 5200. At the same time, after the sample enters the primary drying chamber 5200, the adjusting component drives the primary drying sliding part 5300 to gradually approach the transfer component 2000. Simultaneously, the primary drying heating mesh 5400 is connected to an external power supply, so that the primary drying heating mesh 5400 emits heat. Driven by the primary drying sliding part 5300, the primary drying heating mesh 5400 gradually approaches the sample, thereby achieving a gentle drying action on the sample. At the same time, according to the movement speed of the transfer component 2000, after a batch of samples entering the primary drying chamber 5200 completes the first drying action, the adjusting component drives the primary drying sliding part 5300 to quickly return to the initial position, and then slowly move downwards again. This process is repeated to achieve the drying action on the samples entering the primary drying chamber 5200.
[0057] At the same time, users can also adjust the initial position of the primary drying sliding part 5300 according to the characteristics of different samples, so as to ensure the drying effect of samples with different characteristics.
[0058] In this embodiment, the secondary drying assembly 6000 includes a secondary drying support 6100, a first drying accommodating part 6200, a first drying fan 6300, a second drying accommodating part 6400, and a second drying fan 6500. The secondary drying support 6100 is mounted on the drying main body 1000. The first drying accommodating part 6200 and the second drying accommodating part 6400 are both mounted on the secondary drying support 6100. The first drying fan 6300 is connected inside the first drying accommodating part 6200, and the second drying fan 6500 is connected inside the second drying accommodating part 6400.
[0059] The secondary drying support 6100 provides fixed support for all structures within the secondary drying assembly 6000. When the transfer assembly 2000 carries the sample through the secondary drying assembly 6000, the first drying fan 6300 and the second drying fan 6500 simultaneously enter the working state. Thus, the first drying fan 6300 and the second drying fan 6500 blow air onto the sample on the transfer assembly 2000, thereby completing the secondary drying process.
[0060] The first drying container 6200 mainly serves to contain and limit the first drying fan 6300, and the second drying container 6400 serves to contain and limit the second drying fan 6500.
[0061] Meanwhile, the airflow from the first drying fan 6300 and the second drying fan 6500 is so small that it only assists in drying the sample and does not affect the normal transfer of the sample on the transfer component 2000.
[0062] The environmental monitoring sample drying device includes a drying main body 1000, a transfer assembly 2000 for transferring samples to be dried, a feeding assembly 3000 for feeding samples to be dried, a screening assembly 4000 for screening samples by size, a primary drying assembly 5000 for performing the first drying action on the samples to be dried, a secondary drying assembly 6000 for performing the second drying action on the samples to be dried, and a discharge section 7000. The transfer assembly 2000 is installed inside the drying main body 1000, the feeding assembly 3000 is installed at one end of the drying main body 1000, and the screening assembly 4000 is installed at... The feeding assembly 3000 is located on one side, the primary drying assembly 5000 is installed on the side of the screening assembly 4000 away from the feeding assembly 3000, the secondary drying assembly 6000 is installed on the side of the primary drying assembly 5000 away from the screening assembly 4000, and the discharge section 7000 is installed at the other end of the drying main body 1000. The environmental monitoring sample drying device of this invention achieves multi-stage drying of samples through the mutual arrangement of these structures, thereby ensuring the drying effect. Simultaneously, the primary drying assembly 5000 can slowly heat and dry samples according to different sample characteristics, thus avoiding the impact of rapid heating on the samples.
[0063] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A sample drying device for environmental monitoring, characterized in that, include Drying main body; A transfer assembly for transferring samples to be dried, the transfer assembly being installed inside the drying body; The transfer assembly includes a transfer main shaft, a transfer driven shaft, a transfer part, a transfer drive chain, and a transfer motor. The transfer main shaft is rotatably connected to one end of the drying main body, the transfer driven shaft is rotatably connected to the other end of the drying main body, the transfer part is installed between the transfer main shaft and the transfer driven shaft, the transfer motor is installed inside the drying main body, and the transfer drive chain is installed between the output end of the transfer motor and one end of the transfer main shaft. A feeding assembly for feeding the sample to be dried, the feeding assembly being installed at one end of the drying body; The feeding assembly includes multiple feeding pillars, multiple feeding buffers, and a feeding hopper. The multiple feeding pillars are all installed on the drying main body. One end of the feeding buffer is connected to the upper end of the feeding pillar, and the other end of the feeding buffer is connected to the feeding hopper. A screening assembly for screening the size of samples to be dried, the screening assembly being installed on one side of the feed assembly; The screening assembly includes a screening main body, a screening limiting part, a plurality of first screening rods and a plurality of second screening rods. The screening main body is mounted on the drying main body, the screening limiting part is mounted on the lower side of the screening main body, and the plurality of first screening rods and the plurality of second screening rods are mounted at equal intervals on the lower side of the screening limiting part. A primary drying assembly for performing the first drying action on the sample to be dried, the primary drying assembly being installed on the side of the screening assembly away from the feeding assembly; The primary drying assembly includes a primary drying support, a primary drying chamber, a primary drying sliding part, a primary drying heating grid, and an adjustment component for driving the movement of the primary drying sliding part. The primary drying support is mounted on the primary drying body, the primary drying chamber is mounted on the primary drying support, the primary drying sliding part is slidably connected inside the primary drying chamber, the primary drying heating grid is mounted on the primary drying sliding part, and the adjustment component is mounted inside the primary drying chamber, with its output end connected to the primary drying sliding part. The adjustment assembly includes multiple drive cylinders and multiple drive connecting rods. The drive cylinders are installed inside the primary drying chamber. One end of the drive connecting rod is connected to the output end of the drive cylinder, and the other end of the drive connecting rod is connected to the primary drying sliding part. A secondary drying assembly for performing a second drying operation on the sample to be dried, wherein the secondary drying assembly is installed on the side of the primary drying assembly away from the screening assembly; The secondary drying assembly includes a secondary drying support, a first drying container, a first drying fan, a second drying container, and a second drying fan. The secondary drying support is mounted on the main drying body. The first drying container and the second drying container are both mounted on the secondary drying support. The first drying fan is connected inside the first drying container, and the second drying fan is connected inside the second drying container. The discharge section is installed at the other end of the drying main body.
2. The sample drying device for environmental monitoring according to claim 1, characterized in that, The drying main body is rotatably connected to a first tensioning part and a second tensioning part to ensure the tension of the transfer part.
3. The sample drying device for environmental monitoring according to claim 1, characterized in that, The feed hopper is equipped with multiple screening rods for screening samples to be dried, and the multiple screening rods are installed at equal intervals in the feed hopper.
4. The sample drying device for environmental monitoring according to claim 1, characterized in that, A feeding adjustment component is installed on the lower side of the feeding hopper; The feeding adjustment assembly includes a feeding tray, a first feeding limit part, a second feeding limit part, and a limiting strip. One side of the feeding tray is rotatably connected to the lower side of the feeding hopper. The first feeding limit part is threadedly connected to one side of the feeding tray. The second feeding limit part is threadedly connected to one side of the feeding hopper. The limiting strip is installed between the first feeding limit part and the second feeding limit part.
5. The sample drying device for environmental monitoring according to claim 1, characterized in that, A first screening gap is formed between each pair of the first screening rods, and a second screening gap is formed between each pair of the second screening rods.