CN210119413U

CN210119413U - Moisture tester

Info

Publication number: CN210119413U
Application number: CN201920544619.7U
Authority: CN
Inventors: 丁满生; 周洁; 顾迎迎
Original assignee: Jiangsu T Mab Biopharma Co ltd
Current assignee: Jiangsu T MAB Biopharma Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-02-28
Anticipated expiration: 2029-04-19

Abstract

The utility model provides a moisture tester, which comprises a base and a heating cover; a heating cavity is arranged in the heating cover, and an electric heating wire and a temperature sensor are arranged in the heating cavity; the cover body of the heating cover comprises a stainless steel outer shell, a heat insulation layer and an aluminum alloy inner shell which are arranged from outside to inside, a cold air inlet hole and a hot air outlet hole are formed in the side wall of the heating cover, the cold air inlet hole and the hot air outlet hole penetrate through the stainless steel outer shell and the heat insulation layer, a plurality of cold air dispersing holes and hot air collecting holes are distributed in the side wall of the aluminum alloy inner shell, the cold air dispersing holes are communicated with the cold air inlet hole, and the hot air collecting holes are communicated with the hot air outlet; a weighing cavity is arranged in the base and is communicated with the heating cavity, an electronic balance is arranged in the weighing cavity, a crucible seat is fixed on the electronic balance, and a crucible is arranged on the crucible seat; and the front panel of the base is also provided with an electronic display screen which is electrically connected with the electronic balance and the temperature sensor respectively. The utility model discloses can automatic quick heat dissipation, cooling efficiency height, no thermal shock, use comfort is high.

Description

Moisture tester

Technical Field

The utility model belongs to the technical field of the laboratory glassware, concretely relates to moisture tester.

Background

Moisture tester is often used for detecting the moisture content in various solid medicine appearance, the detection method of partial sample moisture content need weigh after the sample heating, reheat weighing after the cooling, so repetitious, in order to obtain required moisture content data, therefore, use current moisture tester and need open the heat dissipation of heating lid usually and cool off the sample, this kind of structure needs manual intervention testing process, the operation is inconvenient, and natural radiating method radiating efficiency is low, and open the great heat impact that can produce in the twinkling of an eye of heating lid, cause human discomfort, use comfort has been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a moisture tester that can dispel the heat fast automatically, cooling efficiency is high, operating comfort is high.

The utility model provides a following technical scheme:

a moisture tester comprises a base and a heating cover which are hinged with each other, wherein the heating cover can be hermetically covered on the base; a heating cavity is arranged in the heating cover, an electric heating wire is arranged on the top wall of the heating cavity, and a temperature sensor is arranged on the side wall of the heating cavity; the cover body of the heating cover comprises a stainless steel outer shell, a heat insulation layer and an aluminum alloy inner shell which are arranged from outside to inside, a cold air inlet hole and a hot air outlet hole are formed in the side wall of the heating cover, the cold air inlet hole and the hot air outlet hole penetrate through the stainless steel outer shell and the heat insulation layer, a plurality of cold air dispersing holes and hot air collecting holes are distributed in the side wall of the aluminum alloy inner shell, the cold air dispersing holes are communicated with the cold air inlet hole, and the hot air collecting holes are communicated with the hot air outlet; a weighing cavity is arranged in the base and is communicated with the heating cavity, an electronic balance is arranged in the weighing cavity, a crucible seat is fixed on the electronic balance, and a crucible is arranged on the crucible seat; and an electronic display screen is further installed on the front panel of the base, and the electronic display screen is electrically connected with the electronic balance and the temperature sensor respectively and is used for displaying the weighing value and the temperature in the heating cavity.

Preferably, an annular choke plate is fixed on the base, the choke plate is made of aluminum alloy and surrounds the top of the weighing cavity, and the height of the choke plate is larger than that of the cold air dispersing holes and that of the hot air collecting holes.

Preferably, still be equipped with the air water conservancy diversion layer between heat preservation and the aluminum alloy inner shell, the air water conservancy diversion layer is including cold air water conservancy diversion layer and the steam water conservancy diversion layer of isolation, and cold air water conservancy diversion layer intercommunication cold air inlet hole and cold air dispersion hole, and the steam water conservancy diversion layer intercommunication hot gas is collected hole and steam and is exported the hole.

Preferably, two cold air inlet holes and two hot air outlet holes are formed in the heating cavity, the two cold air inlet holes are communicated through a cold air flow guide layer, and the two hot air outlet holes are communicated through a hot air flow guide layer.

Preferably, the crucible is formed at the center thereof with a catching portion protruded upwardly.

Preferably, the height of the catching portion is less than or equal to the height of the choke plate.

Preferably, the top of the grabbing part is provided with a clamping groove for clamping the crucible tongs.

The utility model has the advantages that: the utility model discloses set up the air conditioning that communicates each other and advance hole and air conditioning dispersion hole in heating the lid, because the distribution area of air conditioning dispersion hole is big, thereby introduce the outside cold air into the heating intracavity more equably, the hot-air in the heating intracavity is taken out by steam collecting hole and steam escape hole again, realize to heating intracavity circulation heat dissipation, make the heating intracavity can be cooled down evenly, fast, do not need the manual work to open the heating chamber frequently and cool down, the manpower is saved, the cooling efficiency is improved, the experimental time is saved, and the transient high temperature impact when opening the heating chamber is avoided, the operation comfort level is improved; meanwhile, the cold air dispersing holes disperse the pressure of the cold air in the cold air inlet holes, so that the condition that the sample is separated from the crucible due to the impact of the cold air with a large flow speed on the sample in the crucible is avoided, and the weighing accuracy of the electronic balance on the sample is not influenced.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic view of the internal top structure of the present invention;

labeled as: 1. a base; 2. heating the cover; 3. a heating cavity; 4. a stainless steel housing; 5. a heat-insulating layer; 6. an aluminum alloy inner shell; 7. a cold air inlet hole; 8. a hot air outlet hole; 9. cold gas dispersing holes; 10. a hot gas collection hole; 11. a cold gas diversion layer; 12. a hot gas flow guiding layer; 13. a weighing chamber; 14. an electronic balance; 15. a crucible base; 16. a crucible; 17. an electric heating wire; 18. a temperature sensor; 19. an electronic display screen; 20. a choke plate; 21. a grasping section; 22. a clamping groove.

Detailed Description

As shown in fig. 1 and 2, a moisture meter includes a base 1 and a heating cover 2 which are hinged to each other, the heating cover 2 is sealably covered on the base 1, and the structure of a cold air inlet hole 7 and a hot air outlet hole 8 in fig. 1 corresponds to the a-a sectional view in fig. 2 for easy understanding.

The heating cover 2 is internally provided with a heating cavity 3, the top wall of the heating cavity 3 is provided with a heating wire 17, the heating wire 17 is connected with an external power supply, and the heating cavity 3 is internally provided with a temperature sensor 18. The cover body of the heating cover 2 comprises a stainless steel outer shell 4, a heat preservation layer 5 and an aluminum alloy inner shell 6 which are arranged from outside to inside, two cold air inlet holes 7 and two hot air outlet holes 8 are formed in the side wall of the heating cover 2, the cold air inlet holes 7 are connected with an external cold air source through cold air hoses and electromagnetic valves, the hot air outlet holes 8 are connected with an external air pump through hot air hoses and electromagnetic valves, the cold air inlet holes 7 and the hot air outlet holes 8 penetrate through the stainless steel outer shell 4 and the heat preservation layer 5, a plurality of cold air dispersing holes 9 and hot air collecting holes 10 are distributed in the side wall of the aluminum alloy inner shell 6, the cold air dispersing holes 9 are communicated with the cold air inlet holes 7, the hot air collecting holes 10 are communicated with the hot air outlet holes 8, and the cold air dispersing holes 9 disperse airflow points in the cold air inlet holes 7 into; the hot air collecting holes 10 are distributed on the aluminum alloy inner shell 6, so that the collecting and discharging speed of the hot air in the heating cavity 3 is accelerated. Particularly, be equipped with air guide layer between heat preservation 5 and the aluminum alloy inner shell 6, air guide layer includes cold air water conservancy diversion layer 11 and the steam water conservancy diversion layer 12 of mutual isolated, and cold air water conservancy diversion layer 11 communicates two cold air inlet 7 and whole cold air dispersion hole 9, and whole steam collection hole 10 of steam water conservancy diversion layer 12 intercommunication and two steam outlet 8.

A weighing cavity 13 is arranged in the base 1, the weighing cavity 13 is communicated with the heating cavity 3, an electronic balance 14 is arranged in the weighing cavity 13, a crucible base 15 is fixed on the electronic balance 14, and a crucible 16 is arranged on the crucible base 15; an electronic display screen 19 is further installed on the front panel of the base 1, and the electronic display screen 19 is electrically connected with the electronic balance 14 and the temperature sensor 18 respectively and used for displaying the weighing value and the temperature in the heating cavity. Still install the controller in the base 1, electronic balance 14 and temperature sensor 18 connect the controller respectively, send weighing value and temperature detection value to the controller, and the solenoid valve on heating wire 17, electronic display 19 and air conditioning hose and the steam hose is connected to the controller, and the controller comes the opening of controlling the opening of heating wire 17 and solenoid valve according to temperature detection value.

As shown in fig. 1, an annular choke plate 20 is fixed on the base 1, the choke plate 20 is made of aluminum alloy and has good heat conductivity, the choke plate 20 surrounds the top of the weighing cavity 13, and the height of the choke plate 20 is greater than the height of the cold air dispersing holes 9 and the height of the hot air collecting holes 10. The choke plate 20 blocks cold airflow and hot airflow in the heating cavity 3 to directly blow the sample in the crucible 16, so that the sample is prevented from floating and separating from the crucible due to the impact of the airflow on the sample, and the weighing precision is ensured.

The crucible 16 is formed at the center thereof with a gripping portion 21 which is upwardly protruded, and the crucible is taken/placed by the gripping portion 21, thereby preventing inconvenience in taking/placing the crucible due to the choke plate 20 blocking the crucible 16. The height of the grabbing part 21 is slightly smaller than or equal to the height of the choke plate 20, so that the grabbing part 21 is prevented from bearing the impact of the airflow above the choke plate 20 to influence the sample in the crucible 16. The top of the grabbing part 21 is provided with a clamping groove 22 for clamping the crucible tongs, so that the grabbing part 21 is convenient to clamp.

The utility model discloses a working process does: the air conditioning hose that will communicate the cold air source is installed in air conditioning inlet 7, with the steam hose install in steam outlet 8, the air pump is connected to the steam hose, and the air pump can be taken the steam in heating chamber 3 out, and the flow of admitting air and giving vent to anger can be adjusted through the solenoid valve, makes to form balanced atmospheric pressure atmosphere in the heating chamber 3. The crucible 16 containing the sample is placed on the crucible base 15, the first weighing value is read through the electronic display screen 19 on the base 1, then the heating wire 17 is started to heat the sample for a set time, the second weighing value is read, then the electromagnetic valves at the cold air inlet 7 and the hot air outlet 8 are respectively opened, heat is quickly dissipated in the heating cavity 3, the heating wire 17 is repeatedly started to heat the sample after the heat dissipation temperature reaches a set value, and the third weighing value is read. The above operation steps are only examples, and can be adjusted appropriately according to the specific experimental steps. After the experiment is finished, the crucible 16 is taken out of the base 1 by clamping the clamping groove 22 on the grabbing part 21 through the crucible tongs.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The moisture tester is characterized by comprising a base and a heating cover which are mutually hinged, wherein the heating cover can be hermetically covered on the base; a heating cavity is arranged in the heating cover, an electric heating wire is arranged on the top wall of the heating cavity, and a temperature sensor is arranged on the side wall of the heating cavity; the cover body of the heating cover comprises a stainless steel outer shell, a heat insulation layer and an aluminum alloy inner shell which are arranged from outside to inside, a cold air inlet hole and a hot air outlet hole are formed in the side wall of the heating cover, the cold air inlet hole and the hot air outlet hole penetrate through the stainless steel outer shell and the heat insulation layer, a plurality of cold air dispersing holes and hot air collecting holes are distributed in the side wall of the aluminum alloy inner shell, the cold air dispersing holes are communicated with the cold air inlet hole, and the hot air collecting holes are communicated with the hot air outlet hole; a weighing cavity is arranged in the base and is communicated with the heating cavity, an electronic balance is arranged in the weighing cavity, a crucible seat is fixed on the electronic balance, and a crucible is arranged on the crucible seat; and an electronic display screen is further installed on the front panel of the base, and the electronic display screen is electrically connected with the electronic balance and the temperature sensor respectively.

2. The moisture tester of claim 1, wherein the base is fixed with an annular choke plate, the choke plate is made of aluminum alloy, the choke plate surrounds the top of the weighing cavity, and the height of the choke plate is greater than the height of the cold air dispersing holes and the height of the hot air collecting holes respectively.

3. The moisture tester of claim 2, wherein an air guiding layer is further disposed between the heat insulating layer and the aluminum alloy inner casing, the air guiding layer comprises a cold air guiding layer and a hot air guiding layer, the cold air guiding layer is isolated from the hot air guiding layer, the cold air guiding layer is communicated with the cold air inlet hole and the cold air dispersing hole, and the hot air guiding layer is communicated with the hot air collecting hole and the hot air outlet hole.

4. The moisture meter according to claim 3, wherein two of said cold air inlet holes and two of said hot air outlet holes are formed in said heating chamber, said two cold air inlet holes are connected through said cold air guiding layer, and said two hot air outlet holes are connected through said hot air guiding layer.

5. The moisture meter according to any one of claims 2 to 4, wherein the crucible is formed at a center thereof with a catching portion which is upwardly convex.

6. The moisture meter of claim 5, wherein the height of the gripping portion is less than or equal to the height of the choke plate.

7. The moisture meter according to claim 6, wherein a holding groove for holding the crucible tongs is provided on the top of the grasping portion.