Moisture measuring instrument

Abstract

The utility model discloses a moisture measuring instrument. The moisture measuring instrument comprises a base, a heating tray and an upper cover, wherein the heating tray is arranged on the base, and a groove body is concavely formed in the heating tray; the upper cover is rotatably mounted on the base, the upper cover comprises an inner cover partially extending into the tank body, and a heating bin is defined between the inner cover and the heating tray; a first air inlet communicated with the outside is formed between the inner cover and the heating tray, a first air outlet communicated with the outside is formed in the inner cover, and a first heat dissipation channel is formed among the first air inlet, the heating bin and the first air outlet. A proper amount of cold air can be provided for the heating bin while hot air flows out of the heating bin, and the heating and heat preservation performance of the heating bin is guaranteed under the condition that internal and external air pressure balance is guaranteed; meanwhile, stable air flow can be formed in the heating bin, the measuring state is prevented from being influenced by turbulent flow, and the stability of a testing result is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of laboratory instrument technology, specifically relating to a moisture measuring instrument. Background Technology

[0002] A moisture meter is an instrument specifically designed to measure the water content of substances. Its working principle is based on the fact that a substance absorbs water, leading to a change in its mass. The moisture meter calculates the water content of a substance by measuring the weight difference before and after drying under the same conditions.

[0003] During the product drying process, the interior of the heating chamber is heated to evaporate the moisture in the material placed inside. The weight change is then compared to calculate the final moisture content of the product.

[0004] In existing moisture measuring instruments, some heating chambers are too sealed, preventing airflow from flowing smoothly within the chamber, which affects both airflow stability and heating efficiency; others have heating chambers that are too open, causing gas inside the chamber to flow out too quickly and gas outside to flow in too quickly, making the heating process highly susceptible to external environmental influences and significantly reducing heating efficiency.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a moisture meter that ensures the heating and heat preservation performance of the heating chamber, avoids turbulence affecting the measurement state, and ensures the stability of the test results.

[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0008] A moisture meter, the moisture meter comprising:

[0009] Base;

[0010] A heating tray is disposed on the base, and the heating tray has a recessed groove.

[0011] The upper cover is rotatably mounted on the base, and the upper cover includes an inner cover that partially extends into the groove, the inner cover and the heating tray forming a heating chamber; wherein...

[0012] A first air inlet communicating with the outside is formed between the inner cover and the heating tray, and a first air outlet communicating with the outside is provided on the inner cover. A first heat dissipation channel is formed between the first air inlet, the heating chamber and the first air outlet.

[0013] In one or more embodiments of the present invention, the inner cover includes a first top plate and a first side plate, the first air outlet is disposed on the first top plate, and the first side plate extends into the groove.

[0014] In one or more embodiments of the present invention, the moisture measuring instrument further includes a handle housed in the tank. The handle includes a ring plate, a limiting structure spaced circumferentially on the outer wall of the ring plate, and a windproof cover disposed on the inner wall of the ring plate. The bottom of the inner cover is disposed between the limiting structure and the windproof cover, and the lower surface of the inner cover is higher than the upper surface of the ring plate.

[0015] In one or more embodiments of the present invention, the upper surface of the limiting structure is lower than the upper surface of the heating tray and higher than the lower surface of the first side plate, and the lower surface of the first side plate is lower than the upper surface of the windproof cover.

[0016] In one or more embodiments of this utility model, the upper cover further includes a cover body, the inner cover is disposed in the cover body, the inner cover, the cover body, and the heating tray together form a heat dissipation chamber located outside the heating chamber, the cover body and the heating tray form a second air inlet communicating with the first air inlet, the cover body is provided with a second air outlet communicating with the first air outlet, and a second heat dissipation channel is formed between the second air inlet, the heat dissipation chamber and the second air outlet.

[0017] In one or more embodiments of the present invention, the upper cover further includes an outer cover located between the cover body and the inner cover, a gap is provided between the top of the outer cover and the top of the inner cover, and the outer cover is provided with a vent that connects the first vent and the second vent.

[0018] In one or more embodiments of the present invention, the outer cover includes a second top plate mounted on the inner wall of the cover and a second side plate abutting against the inner side wall of the cover, and the vent is disposed on the second top plate.

[0019] In one or more embodiments of this utility model, the second side plate gradually tilts outward from top to bottom.

[0020] In one or more embodiments of this utility model, the top of the outer cover is provided with a mounting post, and the top of the inner cover is mounted on the mounting post.

[0021] In one or more embodiments of this utility model, the heating tray includes a plate body, the groove is recessed on the plate body, the plate body includes a main body and two bent portions disposed opposite to each other on both sides of the main body, the base is provided with an air inlet, an air outlet is formed between the bent portions and the base, and a gas flow channel is formed between the air inlet and the air outlet.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This invention provides a moisture measuring instrument that can ensure that while hot air flows out of the heating chamber, an appropriate amount of cold air is supplied into the heating chamber. This ensures the heating and heat preservation performance of the heating chamber while maintaining the balance of internal and external air pressure. At the same time, it can form a stable airflow inside the heating chamber, avoiding turbulence from affecting the measurement state and ensuring the stability of the test results. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the moisture measuring instrument in the closed state according to an embodiment of the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the moisture measuring instrument in the open state according to an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional view of a moisture measuring instrument according to one embodiment of the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of the local structure at point A;

[0029] Figure 5 This is a cross-sectional view of the moisture measuring instrument in one embodiment of the present invention.

[0030] Explanation of key figure labels:

[0031] Base 1; Air inlet 11; Air outlet 12;

[0032] Heating tray 2; trough 21; plate 22; main body 221; bending part 222;

[0033] Top cover 3; heating chamber 301; heat dissipation chamber 302; inner cover 31; first top plate 311; first side plate 312; first air inlet 3101; first air outlet 3102; cover body 32; second air inlet 321; second air outlet 322; outer cover 33; second top plate 331; mounting post 3311; second side plate 332; vent 330; gap 34;

[0034] Handle 4; Ring plate 41; Limiting structure 42; Windproof cover 43;

[0035] First heat dissipation channel F1; First channel F11; Second channel F12; Second heat dissipation channel F2; Gas flow channel F3. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] During the product drying process, the interior of the heating chamber is heated to evaporate the moisture in the material placed inside. The weight change is then compared to calculate the product's moisture content. Existing moisture measuring instruments often have overly sealed heating chambers, hindering airflow and affecting both airflow stability and heating efficiency. Others have overly open chambers, causing rapid gas outflow and inflow, making the heating process highly susceptible to external environmental influences and significantly reducing heating efficiency. Therefore, the applicant proposes a moisture measuring instrument to address these issues.

[0040] The technical solution of this utility model will now be described with reference to the accompanying drawings.

[0041] Reference Figures 1-3 As shown, the moisture measuring instrument in this embodiment includes a base 1, a heating tray 2, and a top cover 3.

[0042] The heating tray 2 is disposed on the base 1, and the heating tray 2 has a recessed groove 21. The upper cover 3 is rotatably mounted on the base 1. The upper cover 3 includes an inner cover 31 that extends into the groove 21. The inner cover 31 and the heating tray 2 enclose each other to form a heating chamber 301. A first air inlet 3101 that communicates with the outside is formed between the inner cover 31 and the heating tray 2. The inner cover 31 is provided with a first air outlet 3102 that communicates with the outside. A first heat dissipation channel F1 is formed between the first air inlet 3101, the heating chamber 301 and the first air outlet 3102.

[0043] It should be noted that a heating element is installed inside the heating chamber 301, which heats the heating chamber 301 during the measurement of the product's moisture content. Due to the thermal expansion and contraction of gases, some hot gas will flow out of the heating chamber 301 through the first air outlet 3102. To balance the air pressure, external gas will flow into the heating chamber 301 through the first air inlet 3101. During the process of external gas flowing into the heating chamber 301, it first flows from outside the upper cover 3 into the space between the upper cover 3 and the heating tray 2, then flows along the outer surface of the heating tray 2, and then flows down along the side wall of the tank 21 before passing through the first air inlet 3101 to enter the heating chamber 301. By setting an inner cover 31 that extends into the tank 21, the first heat dissipation channel F1 is arranged in a circuitous manner (see...). Figure 3 This design avoids the inner cover 31 and the heating tray 2 being too closed, preventing cold air from entering and ultimately affecting airflow stability and heating effect; it also avoids the heating chamber 301 being too open, causing too much cold air to enter and adversely affecting the heating effect of the heating chamber 301, ultimately reducing heating efficiency.

[0044] The moisture meter in this embodiment can ensure that while hot air flows out of the heating chamber 301, an appropriate amount of cold air is provided into the heating chamber 301. This ensures the heating and heat preservation performance of the heating chamber 301 while maintaining the balance of internal and external air pressure. At the same time, it can form a stable airflow inside the heating chamber 301, avoiding turbulence from affecting the measurement state and ensuring the stability of the test results.

[0045] Specifically, refer to Figure 2 , Figure 3 As shown, in this embodiment, the inner cover 31 includes a first top plate 311 and a first side plate 312 surrounding the periphery of the first top plate 311. A first air outlet 3102 is disposed on the first top plate 311, and the first side plate 312 partially extends into the groove 21. Since hot air flows upward, when the first air outlet 3102 is disposed on the top plate, it facilitates the flow of hot air out of the heating chamber 301. Of course, in other embodiments, the first air outlet 3102 may also be disposed on the first side plate 312.

[0046] The first side plate 312 has an appropriate gap with the bottom of the heating tray 2 to form a first air inlet 3101. A channel extending downward or inclined downward is formed between the outer wall of the first side plate 312 and the inner wall of the tank 21 so that the first heat dissipation channel F1 is arranged in a roundabout way, thereby facilitating the entry of an appropriate amount of external cold air into the heating chamber 301.

[0047] To facilitate the transfer of the material tray containing the material into the heating chamber 301 for measuring the product's moisture content, refer to... Figure 2 As shown, the moisture measuring instrument in this embodiment also includes a handle 4 housed in the tank 21.

[0048] Specifically, refer to Figure 2 , Figure 3 As shown, the handle 4 in this embodiment includes a ring plate 41, a limiting structure 42 circumferentially spaced on the outer wall of the ring plate 41, and a windproof cover 43 disposed on the inner wall of the ring plate 41. The outer wall of the limiting structure 42 can abut against the inner wall of the groove 21 to reliably and stably place the handle 4 in the groove 21. The inner wall of the ring plate 41 is disposed inside the heating chamber 301, and the outer wall of the ring plate 41 is disposed outside the heating chamber 301. The bottom of the inner cover 31 (i.e., the bottom of the first side plate 312) is disposed between the limiting structure 42 and the windproof cover 43. To prevent the first air inlet 3101 from being blocked, the lower surface of the inner cover 31 (i.e., the lower surface of the first side plate 312) is higher than the upper surface of the ring plate 41.

[0049] Reference Figure 4 As shown, a first channel F11 for gas flow is formed between the inner wall of the limiting structure 42 and the outer wall of the inner cover 31, and a second channel F12 for gas flow is formed between the outer wall of the windproof cover 43 and the inner wall of the inner cover 31. The first channel F11 and the second channel F12 are connected by a first air inlet 3101. When external cold air enters the heating chamber 301, it must first flow downward through the first channel F11, then through the first air inlet 3101, and then upward through the second channel F12 before entering the relatively spacious heating chamber 301. This design allows the first heat dissipation channel F1 to be arranged in a circuitous manner, increasing the length of the first heat dissipation channel F1 that gas passes through when entering the heating chamber 301, preventing cold air from entering the heating chamber 301 too quickly, thereby further ensuring the heating and heat preservation performance of the heating chamber 301.

[0050] To facilitate the formation of interconnected first channel F11 and second channel F12, refer to Figure 3 As shown, in this embodiment, the upper surface of the limiting structure 42 is lower than the upper surface of the heating tray 2 and higher than the lower surface of the first side plate 312, and the lower surface of the first side plate 312 is lower than the upper surface of the windproof cover 43.

[0051] Since the inner cover 31 is generally made of metal, its temperature may become too high during heating. To prevent the heat from the inner cover 31 from being conducted to the outer surface of the upper cover 3 and burning the user, refer to... Figure 3 As shown, the upper cover 3 in this embodiment also includes a cover body 32, and an inner cover 31 is disposed in the cover body 32. The inner cover 31, the cover body 32, and the heating tray 2 enclose each other to form a heat dissipation chamber 302 located outside the heating chamber 301. A second air inlet 321 connected to the first air inlet 3101 is formed between the cover body 32 and the heating tray 2. A second air outlet 322 connected to the first air outlet 3102 is provided on the cover body 32. A second heat dissipation channel F2 is formed between the second air inlet 321, the heat dissipation chamber 302, and the second air outlet 322. According to this design, during the heating process, external gas will first flow into the space between the top cover 3 and the heating tray 2 through the second air inlet 321. Some of the gas will flow through the first heat dissipation channel F1 to carry away some of the heat in the heating chamber 301, and another part of the gas will flow through the second heat dissipation channel F2 to carry away some of the heat in the heat dissipation chamber 302. This reduces the impact of heating in the heating chamber 301 on the entire top cover 3, thereby improving the service life of the whole machine.

[0052] Preferably, refer to Figure 3 As shown, in this embodiment, the upper cover 3 also includes an outer cover 33 located between the cover body 32 and the inner cover 31. A gap 34 is provided between the top of the outer cover 33 and the top of the inner cover 31. The outer cover 33 is provided with a vent 330 connecting the first air outlet 3102 and the second air outlet 322. The gas flowing through the second heat dissipation channel F2 can be guided by the inner surface of the outer cover 33 to flow through the vent 330 and finally flow out of the upper cover 3 through the second air outlet 322, so as to carry away some of the heat in the heat dissipation chamber 302. According to this design, the gas can be prevented from running around randomly, and the heat dissipation effect of the second heat dissipation channel F2 can be enhanced.

[0053] Specifically, in order to facilitate the flow of gas through the second heat dissipation channel F2, refer to Figure 3 As shown, the outer cover 33 in this embodiment includes a second top plate 331 installed on the inner wall of the cover body 32 and a second side plate 332 that abuts against the inner side wall of the cover body 32, and a vent 330 is provided on the second top plate 331.

[0054] Preferably, refer to Figure 3 As shown, in this embodiment, the second side plate 332 gradually slopes outward from top to bottom. Based on this design, a funnel shape is formed between the second side plate 332 and the first side plate 312, which increases the air intake of the second heat dissipation channel F2, allowing more gas to flow through the second heat dissipation channel F2 to carry away heat from the heat dissipation chamber 302, while simultaneously ensuring the heating and heat preservation performance of the heating chamber 301.

[0055] To ensure that a gap 34 is provided between the top of the outer cover 33 and the top of the inner cover 31, refer to... Figure 3 As shown, in this embodiment, the top of the outer cover 33 is provided with a mounting post 3311, and the top of the inner cover 31 is installed on the mounting post 3311 by fasteners such as screws and bolts.

[0056] Reference Figure 3 , Figure 5 As shown, the heating tray 2 in this embodiment includes a plate 22, a groove 21 recessed on the plate 22, the plate 22 includes a main body 221 and two bent portions 222 disposed opposite to each other on both sides of the main body 221, an air inlet 11 is provided on the base 1, an air outlet 12 is formed between the bent portions 222 and the base 1, and a gas flow channel F3 is formed between the air inlet 11 and the air outlet 12.

[0057] It should be noted that the base 1 of the moisture meter can be equipped with an air outlet structure. This air outlet structure can guide external air into the base 1 through the air inlet 11, flow through the gas flow channel F3, and finally exit the base 1 and heating tray 2 through the air outlet 12. Based on this design, some of the heat from the heating tray 2 can be carried away to prevent the user from being burned by the heating tray 2. Of course, this air outlet structure can also be located on the outside, as long as it can guide external air into the base 1 and drive the air to flow from the air inlet 11 to the air outlet 12 in the gas flow channel F3.

[0058] As can be seen from the above technical solutions, this utility model has the following beneficial effects:

[0059] This invention provides a moisture measuring instrument that can ensure that while hot air flows out of the heating chamber, an appropriate amount of cold air is supplied into the heating chamber. This ensures the heating and heat preservation performance of the heating chamber while maintaining the balance of internal and external air pressure. At the same time, it can form a stable airflow inside the heating chamber, avoiding turbulence from affecting the measurement state and ensuring the stability of the test results.

[0060] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A moisture meter, characterized in that, The moisture measuring instrument includes: Base; A heating tray is disposed on the base, and the heating tray has a recessed groove. The upper cover is rotatably mounted on the base, and the upper cover includes an inner cover that partially extends into the groove, the inner cover and the heating tray forming a heating chamber; wherein... A first air inlet communicating with the outside is formed between the inner cover and the heating tray. A first air outlet communicating with the outside is provided on the inner cover. A first heat dissipation channel is formed between the first air inlet, the heating chamber and the first air outlet. The inner cover includes a first top plate and a first side plate. The first side plate has an appropriate distance from the bottom of the heating tray to form the first air inlet. The first air outlet is provided on the first top plate.

2. The moisture measuring instrument according to claim 1, characterized in that, The first side plate extends into the groove.

3. The moisture measuring instrument according to claim 2, characterized in that, The moisture meter also includes a handle housed in the tank. The handle includes a ring plate, a limiting structure spaced circumferentially on the outer wall of the ring plate, and a windproof cover on the inner wall of the ring plate. The bottom of the inner cover is located between the limiting structure and the windproof cover, and the lower surface of the inner cover is higher than the upper surface of the ring plate.

4. The moisture measuring instrument according to claim 3, characterized in that, The upper surface of the limiting structure is lower than the upper surface of the heating tray and higher than the lower surface of the first side plate, and the lower surface of the first side plate is lower than the upper surface of the windproof cover.

5. The moisture measuring instrument according to claim 1, characterized in that, The upper cover also includes a cover body, and the inner cover is disposed in the cover body. The inner cover, the cover body, and the heating tray together form a heat dissipation chamber located outside the heating chamber. A second air inlet connected to the first air inlet is formed between the cover body and the heating tray. A second air outlet connected to the first air outlet is provided on the cover body. A second heat dissipation channel is formed between the second air inlet, the heat dissipation chamber, and the second air outlet.

6. The moisture measuring instrument according to claim 5, characterized in that, The upper cover also includes an outer cover located between the cover body and the inner cover, with a gap between the top of the outer cover and the top of the inner cover, and a vent on the outer cover connecting the first vent and the second vent.

7. The moisture measuring instrument according to claim 6, characterized in that, The outer cover includes a second top plate installed on the inner wall of the cover and a second side plate abutting against the inner side wall of the cover, and the vent is provided on the second top plate.

8. The moisture measuring instrument according to claim 7, characterized in that, The second side plate gradually slopes outward from top to bottom.

9. The moisture measuring instrument according to claim 6, characterized in that, The outer cover has a mounting post on its top, and the inner cover is mounted on the mounting post.

10. The moisture measuring instrument according to claim 1, characterized in that, The heating tray includes a plate, the groove is recessed on the plate, the plate includes a main body and two bent portions opposite to each other on both sides of the main body, the base has an air inlet, the bent portions and the base form an air outlet, and the air inlet and the air outlet form a gas flow channel.

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