Snow density and snow depth measuring instrument
By setting up a measuring mechanism and weighing table inside the measuring cylinder of the snow density snow depth measurement instrument, the problem of impurities cannot be observed during sampling is solved, real-time monitoring and fixed-point sampling are achieved, and measurement accuracy and functionality are improved.
Patent Information
- Application Number
- CN202510410343.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2025-06-24
AI Technical Summary
The existing snow density snow depth measurement instruments cannot observe whether the snow layer contains impurities during sampling, which affects the measurement accuracy. Most traditional instruments only have a single working mode and are limited in operation.
A snow density snow depth measurement instrument was designed. The measuring mechanism is installed inside the measuring cylinder, including an inner liner and an observation window, which can monitor the snow depth in real time and has the function of fixed-point sampling to detect the snow depth. At the same time, through the cooperation of the weighing table and the filter plate, impurities in the snow can be eliminated and measurement accuracy can be improved.
It realizes the function of real-time monitoring of snow depth and fixed-point sampling to detect snow depth, which can eliminate impurities in the snow, improve measurement accuracy, and enhance the functionality and precision of the instrument.
Smart Images
Figure CN120195050A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of measuring tools, and in particular to a snow density and snow depth measuring instrument. Background Art
[0002] The measurement of snow density and depth has important practical value and scientific significance in many fields. The snow density combined with the snow depth can calculate the water content of the snow (snow water equivalent), which helps to predict the recharge of rivers and reservoirs during spring snowmelt and is crucial for agricultural irrigation, drinking water supply, and hydropower generation. At the same time, the snow density reflects the nature of snowfall (such as dry snow, wet snow) and is a key parameter in climate models. The measurement of snow density is one of the basic tasks for understanding natural processes, serving human society, and coping with climate change.
[0003] When measuring snow density, the most common method is the weighing method, which calculates the density by obtaining the volume and mass of the snow. However, when measuring snow density by the weighing method, a measuring cylinder is needed to take a preliminary sample of the snow layer at the detection point. During the sampling process, the operator cannot observe whether there are other impurities inside the snow layer in the measuring cylinder, which will cause a deviation between the experimental data and the real data. Moreover, most traditional sampling and detection instruments only have a single working mode, thus having shortcomings and limitations in operation. Summary of the Invention
[0004] The present invention discloses a snow density and snow depth measuring instrument, aiming to solve the technical problems that in the existing snow density and snow depth measuring instruments, it is impossible to observe whether there are impurities inside the snow layer during sampling, which will affect the measurement accuracy, and most traditional sampling and detection instruments only have a single working mode, having shortcomings and limitations in operation.
[0005] To achieve the above object, the present invention adopts the following technical solutions: A snow density and snow depth measuring instrument, comprising a measuring cylinder, wherein a measuring mechanism is arranged inside the measuring cylinder. The measuring mechanism includes an inner cylinder sleeved and fixed inside the measuring cylinder. An observation window is horizontally opened on the outer side of the measuring cylinder, and the sampling snow depth inside the inner cylinder can be directly observed through the observation window. A sampling mechanism is arranged at the bottom of the measuring mechanism. By cooperating with the operation of the sampling mechanism by the measuring mechanism, the device has two working modes of real-time monitoring of snow depth and fixed-point sampling for detecting snow depth, and can also eliminate the influence of impurities in the sampled snow on the experimental accuracy. It is set that the cross-sectional area of the inner cavity of the measuring mechanism is 100 cm². After the measuring mechanism is inserted into the snow, the depth inside the measuring mechanism is H1, and the total volume of the receiving object inside the measuring mechanism is V1, where V1 = H1 * 100 cm². At the same time, the total weight of the receiving object inside the measuring mechanism is measured as M1. The whole device is moved indoors and waits for the snow inside the measuring mechanism to melt. The depth of the mixed solution of water and sundries is obtained as H2. The sundries inside the aqueous solution are fished out, and the depth of the pure aqueous solution is obtained as H3. It is set that the default height of the sundries is H4, then H4 = H2 - H3. It is set that the volume of the sundries is V2, then V2 = H4 * 100 cm². It is set that the volume of the pure snow is V3, then V3 = V1 - V2. The sundries inside the aqueous solution are fished out to obtain the mass of the pure aqueous solution, and the mass of the pure aqueous solution is set as M1. As can be seen from the above, the snow density ρ to be detected = M1 / V3.
[0006] By arranging a measuring mechanism inside the traditional measuring cylinder and cooperating with the operation of the sampling mechanism by the measuring mechanism, the device has two working modes of real-time monitoring of snow depth and fixed-point sampling for detecting snow depth, and can also eliminate the influence of impurities in the sampled snow on the experimental accuracy, thereby improving the functionality and precision of the traditional snow density and snow depth measuring instrument.
[0007] In a preferred solution, scale values are arranged on the side of the observation window of the measuring mechanism. The bottom of the measuring cylinder is fixedly installed with a weighing platform through bolts. The weighing platform is embedded at the bottom of the inner cylinder, and a filter plate is placed on the top of the weighing platform. The filter plate is slidably distributed inside the inner cylinder.
[0008] By arranging an inner cylinder structure inside the measuring cylinder and installing a weighing platform at the bottom of the measuring cylinder through bolts, in snowy weather, by placing the device at the positioning point to be detected and setting the detection time, after reaching the set value of the time, the snow depth is obtained by observing the observation window and scale values on the side of the measuring cylinder. At the same time, the weighing platform at the bottom is used to weigh the snow and impurity mixture inside the inner cylinder. By cooperating with the subsequent melting of the snow and the stripping of impurities in the snow water by the filter plate, the snow density at the test point is accurately measured by the impurity removal method, thereby improving the applicability and accuracy of the traditional measuring device.
[0009] In a preferred embodiment, the sampling mechanism includes a sampling port opened at the bottom of the inner tank. A cutting blade is provided at the bottom of the sampling port. By using the cutting blade to pierce into the snow and cooperating with the sampling port, snow is collected inside the inner tank. A cutting plate is horizontally dragged at the bottom of the cutting blade, and a scale marker is horizontally fixed on the outer side of the measuring cylinder.
[0010] By additionally providing a sampling port structure with a built-in cutting blade at the bottom of the inner tank, in a snow-covered environment, the operator can directly sample the snow-covered ground by disassembling the weighing platform and inserting the cutting blade into the snow, and cooperating with the cutting plate at the bottom, enabling this device to be applicable to both snow accumulation and snowfall weather, greatly improving the functionality of traditional devices.
[0011] In a preferred embodiment, a number of airtight plug points are evenly arranged on the top of the weighing platform. The filter plate is clamped inside the airtight plug points. The length of the airtight plug points is the same as the thickness of the filter plate, and at the same time, the top of the airtight plug points is flush with the bottom of the scale value.
[0012] By providing a number of evenly distributed airtight plug point structures on the top of the weighing platform and using the airtight plug points to clamp inside the filter plate, when this device samples snowfall, the sieve holes on the surface of the filter plate will not affect the sampling precision, thus further ensuring the accuracy of the experimental results of this device.
[0013] In a preferred embodiment, a heating wire is fixedly installed between the measuring cylinder and the inner tank.
[0014] By providing a heating wire structure between the measuring cylinder and the inner tank, the heating wire is used to heat the snow sample placed inside the inner tank, thereby accelerating the melting of the snow sample and improving the working efficiency of this device.
[0015] As can be seen from the above, a snow density and snow depth measuring instrument provided by the present invention has the following technical effects.
[0016] Firstly: By providing an inner tank structure inside the measuring cylinder, and at the same time, a weighing platform is installed at the bottom of the measuring cylinder through bolts. In a snowfall environment, by placing this device at the positioning point to be detected and setting the detection time, after reaching the set value of the time, the snow depth is obtained by observing the observation window and scale value on the side of the measuring cylinder; at the same time, a sampling port structure with a built-in cutting blade is additionally provided at the bottom of the inner tank. In a snow-covered environment, the operator can directly sample the snow-covered ground by disassembling the weighing platform and inserting the cutting blade into the snow, and cooperating with the cutting plate at the bottom, enabling this device to be applicable to both snow accumulation and snowfall weather, effectively improving the functionality of traditional devices.
[0017] Second: By additionally providing a sliding and distributed filter plate structure on the top of the weighing platform, using the bottom weighing platform to bear the snow and impurity mixture inside the inner container, and in cooperation with the subsequent melting of the snow accumulation, driving the filter plate to move vertically through the hook rod, removing the impurities in the snow water separately from the top of the weighing platform, and by observing the change in the weight at the top of the weighing platform and the change in the volume of pure snow water inside the inner container, the snow accumulation density at the test point can be accurately measured using the impurity removal method, thereby greatly improving the applicability and accuracy of traditional measurement equipment. Brief Description of the Drawings
[0018] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention.
[0019] Figure 2 Proposed by the present invention Figure 1 The enlarged structure diagram of part A in
[0020] Figure 3 It is a schematic diagram of the measuring cylinder structure proposed by the present invention.
[0021] Figure 4 It is a sectional view of the internal structure of the measuring cylinder proposed by the present invention.
[0022] Figure 5 It is an exploded view of the overall structure proposed by the present invention.
[0023] Figure 6 It is a schematic diagram of the structure of the sampling mechanism proposed by the present invention.
[0024] Figure 7 It is a schematic diagram of the structure of the weighing platform proposed by the present invention.
[0025] Figure 8 It is a schematic diagram of the state when the sampling mechanism proposed by the present invention is in use.
[0026] In the figure: 1. Measuring cylinder; 2. Measuring mechanism; 201. Inner container; 202. Observation window; 203. Scale value; 204. Weighing platform; 205. Filter plate; 206. Sealing plug point; 207. Electric heating wire; 208. Hook rod; 3. Sampling mechanism; 301. Sampling port; 302. Blade plate; 303. Truncated plate; 304. Insertion mark; 305. Cylinder cover; 306. Annular groove. Detailed Embodiments
[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0028] A snow accumulation density and snow depth measuring instrument disclosed by the present invention is mainly applied to the scenarios when measuring the snow accumulation, snowfall density, and snow depth.
[0029] Reference Figures 1 to 8 , a snowpack density and snow depth measuring instrument, comprising a measuring cylinder 1, inside which a measuring mechanism 2 is arranged. The measuring mechanism 2 includes an inner cylinder 201 sleeved and fixed inside the measuring cylinder 1. An observation window 202 is horizontally opened on the outer side of the measuring cylinder 1, through which the sampling snow depth inside the inner cylinder 201 can be directly observed; A sampling mechanism 3 is arranged at the bottom of the measuring mechanism 2; By utilizing the operation of the measuring mechanism 2 in cooperation with the sampling mechanism 3, this device has two working modes of real-time monitoring of snow depth and fixed-point sampling for snow depth detection, and can also eliminate the influence of impurities in the sampled snow on the experimental accuracy.
[0030] In this embodiment: When in use, the cross-sectional area of the inner cavity of the measuring mechanism 2 is set to 100 cm². The tester holds the measuring mechanism 2 and moves it outdoors, and at the same time vertically inserts the measuring mechanism 2 into the snowfield to be sampled. Then, the sampling mechanism 3 is used to take away the measuring mechanism 2 and the snow-impurity mixture inside it to the indoor. At this time, the depth of the snow-impurity mixture inside the measuring mechanism 2 is H1, and the total volume of the mixture inside the measuring mechanism 2 is V1, and V1 = H1 * 100 cm²; at the same time, the measuring mechanism 2 is started, causing the snow inside the measuring mechanism 2 to melt, obtaining a mixed solution of water and impurities with a depth of H2. The impurities located inside the aqueous solution are fished out, obtaining a pure aqueous solution with a depth of H3. The default height of the impurities is set as H4, then H4 = H2 - H3. The volume of the impurities is set as V2, then V2 = H4 * 100 cm². The volume of the pure snow is set as V3, then V3 = V1 - V2. Wait for the snow inside the measuring mechanism 2 to melt, fish out the impurities located inside the aqueous solution, and obtain the mass of the pure aqueous solution. The mass of the pure aqueous solution is set as M1; as can be seen from the above, the snowpack density ρ to be detected = M1 / V3.
[0031] Reference Figure 1 、 Figures 3 to 8 , in a preferred embodiment, the measuring mechanism 2 further includes a scale value 203 arranged on the side of the observation window 202. The bottom of the measuring cylinder 1 is fixedly installed with a weighing platform 204 through bolts. The weighing platform 204 is embedded in the bottom of the inner cylinder 201, and a filter plate 205 is placed on the top of the weighing platform 204. The filter plate 205 is slidably distributed inside the inner cylinder 201.
[0032] In snowy weather, the measuring personnel hold the measuring cylinder 1, place the measuring cylinder 1 vertically at the outdoor measuring point to be measured, and set the measuring time. Taking 5 minutes as an example, after 5 minutes, the measuring personnel put the measuring cylinder 1 back into the laboratory. At this time, the measuring personnel observe the snow thickness inside the inner container 201 through the observation window 202 on the side of the measuring cylinder 1, observe the scale value 203 aligned with the top of the snow, and obtain that the depth of the snow and impurity mixture inside the inner container 201 at this time is H1, and the total volume of the mixture inside the inner container 201 is V1, V1 = H1 * 100 c㎡ (the cross-sectional area of the inner container 201). Then wait for the snow inside the inner container 201 to melt and obtain a mixed solution of water and impurities with a depth of H2. At this time, the measuring personnel drive the filter plate 205 to move vertically along the inside of the inner container 201. While moving, the impurities on the top of the filter plate 205 will move synchronously and be removed from the aqueous solution, and the aqueous solution will flow back to the bottom of the inner container 201 through the filter plate 205. After the impurities are removed from the aqueous solution, the measuring personnel observe the scale value 203 corresponding to the top of the pure aqueous solution at this time and obtain the depth of the pure aqueous solution as H3. And set the default height of the impurities as H4, then H4 = H2 - H3. Then set the volume of the impurities as V2, then V2 = H4 * 100 c㎡. And set the volume of the pure snow as V3, then V3 = V1 - V2. While fishing out the impurities inside the aqueous solution, the weight measured by the weighing platform 204 will decrease correspondingly. At this time, the weight of the pure aqueous solution is obtained. Set the weight of the pure aqueous solution as M1; It can be seen from the above that the snow density ρ to be detected = M1 / V3; Among them, a hook rod 208 is hooked inside the filter plate 205. During operation, the measuring personnel insert the bottom of the hook rod 208 into the inner container 201 and hook the top of the filter plate 205 through the hook rod 208, and then take out the filter plate 205 from the inner container 201; In this experiment, the self-weight and volume of the filter plate 205 have been estimated in the experimental data and are ignored here.
[0033] It should be added that: the inner container 201 is made of stainless steel with a cross-sectional area of 100 c㎡. In snowy weather, the inner container 201 with the weighing platform 204 at the bottom is placed horizontally at the measuring point to be measured, the sampling time is set, and the snow sample depth inside the inner container 201 is detected after this time; and a number of airtight plug points 206 are evenly arranged on the top of the weighing platform 204, the filter plate 205 is clamped inside the airtight plug points 206, the length of the airtight plug points 206 is the same as the thickness of the filter plate 205, and at the same time, the starting value horizontal line of the scale value 203 is flush with the horizontal line of the upper surface of the filter plate 205 to prevent the sieve holes of the filter plate 205 from causing errors to the experimental data.
[0034] Furthermore, it is supplemented that: an electric heating wire 207 is fixedly installed between the interlayer of the measuring cylinder 1 and the inner liner 201. When the measurement personnel put the measuring cylinder 1 back into the laboratory and wait for the snow inside the inner liner 201 to melt, the electric heating wire 207 can be started to improve the melting efficiency of the snow through electric heating; and a cylinder cover 305 made of rubber material is engaged with the top of the inner liner 201. During the experiment, the measurement personnel close the top of the inner liner 201 through the cylinder cover 305 to prevent other factors from affecting the accuracy of the experimental results.
[0035] Reference Figure 1 , Figures 4 to 8 In a preferred embodiment, the sampling mechanism 3 includes a sampling port 301 opened at the bottom of the inner liner 201, and a blade 302 is provided at the bottom of the sampling port 301. The blade 302 is used to penetrate into the snow, and the inner liner 201 is collected with the sampling port 301. A cut-off plate 303 is horizontally placed at the bottom of the blade 302, and a marker 304 is horizontally fixed on the outside of the measuring cylinder 1.
[0036] In a snowy environment, the surveyor removes the weighing platform 204 from the bottom of the inner liner 201 by tightening the bolts, and moves the measuring cylinder 1 outdoors, aligns the bottom of the measuring cylinder 1 vertically with the snow point to be sampled and presses it vertically, so that the blade 302 at the bottom of the inner liner 201 is inserted into the snow, and collects snow inside the inner liner 201 through the sampling port 301 until the blade 302 contacts the ground and the ice layer on the ground. At this time, the surveyor pushes away the snow on the outside of the measuring cylinder 1 and inserts the cut-off plate 303 horizontally from under the blade 302 to support the bottom of the entire measuring cylinder 1. , then move the measuring cylinder 1 containing snow into the room, and gently turn the measuring cylinder 1 upside down on the top of the weighing platform 204. At this time, the measurement personnel observe the thickness of the snow inside the inner liner 201 through the observation window 202 on the side of the measuring cylinder 1, and observe the scale value 203 aligned with the top of the snow. It is concluded that the depth of the snow mixture inside the inner liner 201 is H1, and the above operation is repeated to obtain the density of the snow. Among them, an annular groove 306 is vertically opened on the top of the weighing platform 204, and the blade plate 302 is inserted into the inside of the annular groove 306, thereby reducing the occupied area of the blade plate 302.
[0037] Furthermore, it is supplemented that in a snowy environment, the working process of the present device is simplified as follows: the weighing platform 204 is removed from the bottom of the measuring cylinder 1, and after the measuring cylinder 1 is moved to the sampling point by hand, the measuring cylinder 1 is vertically pressed toward the snow surface, and the snow is sampled using the sampling port 301 and the blade plate 302, and the bottom is supported by the cut-off plate 303, and subsequently the weighing platform 204 is used to support the bottom, and the depth of the snow sample inside the inner liner 201 is detected, and then the density of the snow sample is measured.
[0038] This application has the following two working modes: The first method: in snowy weather, the surveyor holds the measuring cylinder 1, places the measuring cylinder 1 vertically outdoors at the point to be measured, and sets the measuring time, taking 5 minutes as an example. After 5 minutes, the surveyor puts the measuring cylinder 1 back into the laboratory. At this time, the surveyor observes the thickness of the snow inside the inner liner 201 through the observation window 202 on the side of the measuring cylinder 1, and observes the scale value 203 aligned with the top of the snow. It is concluded that the depth of the snow-miscellaneous mixture inside the inner liner 201 is H1, and the total volume of the mixture inside the inner liner 201 is V1, V1=H1*100cm2 (cross-sectional area of the inner liner 201). Then, the snow inside the inner liner 201 is waited for to melt and the depth of the mixed solution of water and debris is H2. At this time, the surveyor pulls the filter plate 205 vertically along the inside of the inner liner 201 through the hook rod 208. While moving, the impurities on the top of the filter plate 205 will be removed synchronously above the water surface. , and the aqueous solution will flow back to the bottom of the inner tank 201 through the filter plate 205. After the filter plate 205 is moved to a level higher than the opening of the measuring cylinder 1, the impurities on the surface of the filter plate 205 are blown away with the mouth, or the impurities are cleaned with other tools, and the filter plate 205 is put back into the inner tank 201 for reset. The measurement personnel observe the scale value 203 corresponding to the top of the pure aqueous solution at this time, and obtain the depth of the pure aqueous solution as H3, and set the default height of the debris to H4, then H4=H2-H3, and then set the volume of the debris to V2, then V2=H4*100c㎡, and set the volume of pure snow to V3, then V3=V1-V2. While the debris in the aqueous solution is fished out, the weight measured by the weighing platform 204 will decrease accordingly. At this time, the weight of the pure aqueous solution is obtained, and the weight of the pure aqueous solution is set to M1; from the above, it can be known that the snow density to be detected is ρ=M1 / V3; The second method: In a snowy environment, the measurement personnel remove the weighing platform 204 from the bottom of the inner liner 201 by tightening the bolts, and move the measuring cylinder 1 outdoors, align the bottom of the measuring cylinder 1 vertically with the snow point to be sampled and press it vertically downward, so that the blade 302 at the bottom of the inner liner 201 is inserted into the snow, and the snow is collected inside the inner liner 201 through the sampling port 301 until the blade 302 contacts the ground and the ice layer on the ground. At this time, the measurement personnel push away the snow on the outside of the measuring cylinder 1 and insert the cut-off plate 303 horizontally from under the blade 302 to support the bottom of the entire measuring cylinder 1 (such as Figure 8 As shown), the measuring cylinder 1 containing the snow is moved indoors, and the measuring cylinder 1 is gently turned upside down on the top of the weighing platform 204. At this time, the measurement personnel observe the thickness of the snow inside the inner liner 201 through the observation window 202 on the side of the measuring cylinder 1, and observe the scale value 203 aligned with the top of the snow. It is concluded that the depth of the snow-miscellaneous mixture inside the inner liner 201 is H1. The operation in the first mode is repeated to obtain the density of the snow.
[0039] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention by making equivalent substitutions or changes according to the technical solution and inventive concept of the present invention.
Claims
1. A snow density and snow depth measuring instrument, comprising a measuring cylinder (1), characterized in that: A measuring mechanism (2) is arranged inside the measuring cylinder (1), and the measuring mechanism (2) comprises an inner liner (201) which is sleeved and fixed inside the measuring cylinder (1); an observation window (202) is horizontally opened on the outer side of the measuring cylinder (1), and the sampling snow depth inside the inner liner (201) can be directly observed through the observation window (202); A sampling mechanism (3) is provided at the bottom of the measuring mechanism (2); By using the measuring mechanism (2) in conjunction with the sampling mechanism (3), the device has two working modes: real-time monitoring of snow depth and fixed-point sampling to detect snow depth, and can eliminate the influence of impurities in the sampled snow on the experimental accuracy. The cross-sectional area of the inner cavity of the measuring mechanism (2) is set to 100 cm2. After the measuring mechanism (2) is inserted into the snow, the depth inside the measuring mechanism (2) is H1. The total volume of the object received inside the measuring mechanism (2) is V1, where V1 = H1*100 cm2. Move the entire device indoors, wait for the snow inside the measuring mechanism (2) to melt, and obtain a mixed solution of water and debris with a depth of H2. Remove the debris inside the aqueous solution and obtain a pure aqueous solution with a depth of H3. Set the default height of the debris to H4, then H4=H2-H3, set the volume of the debris to V2, then V2=H4*100cm2, set the volume of pure snow to V3, then V3=V1-V2; Remove the debris inside the aqueous solution to obtain the mass of the pure aqueous solution, and set the mass of the pure aqueous solution as M1; From the above, we can know that the snow density to be detected is ρ=M1 / V3.
2. The snow density and snow depth measuring instrument according to claim 1, characterized in that: The measuring mechanism (2) further comprises a scale value (203) provided on the side of the observation window (202); a weighing platform (204) is fixedly mounted on the bottom of the measuring cylinder (1) by means of bolts; the weighing platform (204) is embedded in the bottom of the inner liner (201); a filter plate (205) is placed on the top of the weighing platform (204); and the filter plate (205) is slidably distributed inside the inner liner (201).
3. The snow density and snow depth measuring instrument according to claim 2, characterized in that: The sampling mechanism (3) comprises a sampling port (301) opened at the bottom of the inner liner (201), a blade (302) being provided at the bottom of the sampling port (301), the blade (302) being used to pierce into snow, and the inner liner (201) is collected with the help of the sampling port (301), a cut-off plate (303) being horizontally placed at the bottom of the blade (302), and a plug mark (304) being horizontally fixed to the outside of the measuring cylinder (1).
4. The snow density and snow depth measuring instrument according to claim 3, characterized in that: A plurality of sealed plugging points (206) are evenly arranged on the top of the weighing platform (204), and the filter plate (205) is engaged inside the sealed plugging point (206). The length of the sealed plugging point (206) is consistent with the thickness of the filter plate (205), and the top of the sealed plugging point (206) is flush with the bottom of the scale value (203).
5. The snow density and snow depth measuring instrument according to claim 1, characterized in that: An electric heating wire (207) is fixedly installed between the interlayer of the measuring cylinder (1) and the inner container (201).
6. The snow density and snow depth measuring instrument according to claim 2, characterized in that: The filter plate (205) is hooked inside with a hook rod (208), and the filter plate (205) is taken out from the interior of the inner container (201) via the hook rod (208).
7. The snow density and snow depth measuring instrument according to claim 1, characterized in that: A cylinder cover (305) made of rubber material is engaged on the top of the inner container (201).
8. The snow density and snow depth measuring instrument according to claim 4, characterized in that: An annular groove (306) is vertically opened on the top of the weighing platform (204), and the blade plate (302) is inserted into the inside of the annular groove (306).
9. The snow density and snow depth measuring instrument according to claim 2, characterized in that: The inner liner (201) is made of stainless steel with a cross-sectional area of 100 cm2. In snowy weather, the measuring cylinder (1) is placed horizontally at a point to be measured, a sampling time is set, and the depth of the snow sample inside the inner liner (201) is detected after the time.
10. The snow density and snow depth measuring instrument according to claim 3, characterized in that: In a snowy environment, the weighing platform (204) is removed from the bottom of the measuring cylinder (1), and after the measuring cylinder (1) is moved to a sampling point by hand, the measuring cylinder (1) is vertically pressed toward the snow surface, and the snow is sampled using the sampling port (301) and the blade plate (302), and the bottom is supported by the cut-off plate (303), and subsequently the weighing platform (204) is used to support the bottom to detect the depth of the snow sample inside the inner tank (201).