CN214439200U

CN214439200U - A experimental fireless heating device for chemistry

Info

Publication number: CN214439200U
Application number: CN202120373577.2U
Authority: CN
Inventors: 张卫; 张雨
Original assignee: Zhengzhou Railway Vocational and Technical College
Current assignee: Zhengzhou Railway Vocational and Technical College
Priority date: 2021-02-18
Filing date: 2021-02-18
Publication date: 2021-10-22
Anticipated expiration: 2031-02-18

Abstract

The utility model provides a fire-free heating device for chemical test, which comprises a base, wherein the base is provided with an installation cavity with an upper opening, a guide cavity surrounding the installation cavity and a press switch positioned at one side of the guide cavity, which is far away from the installation cavity, a heat insulation layer is arranged on the inner side wall of the installation cavity, an electric heating element is also arranged in the installation cavity, and the press switch is electrically connected with the electric heating element; the test bench is characterized by further comprising a guide piece arranged in the guide cavity, a plurality of springs are further arranged between the guide piece and the bottom of the guide cavity, the springs surround the installation cavity and are arranged at even intervals, the end part, extending out of the guide cavity, of the guide piece is connected with a beaker placing seat, the guide piece or the beaker placing seat is provided with a pressing piece extending to the pressing switch, and the problem that an open fire experiment cannot be met in a laboratory can be solved through an electric heating method.

Description

A experimental fireless heating device for chemistry

Technical Field

The utility model relates to a heating device technical field, concretely relates to experimental fireless heating device for chemistry.

Background

Nowadays, in the related field of chemical laboratories and the like, heating is needed for corresponding chemical reactions, and in the existing laboratories, heating is usually carried out by using alcohol lamps, but the heating of the alcohol lamps cannot meet the chemical reactions because some special chemical reactions cannot meet open flames.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides a chemical experimental fireless heating device, which is heated by electric heating, and can solve the above technical problems.

The utility model provides a fire-free heating device for chemical test, which comprises a base, wherein the base is provided with an installation cavity with an upper opening, a guide cavity surrounding the installation cavity and a press switch positioned at one side of the guide cavity, which is far away from the installation cavity, a heat insulation layer is arranged on the inner side wall of the installation cavity, an electric heating element is also arranged in the installation cavity, and the press switch is electrically connected with the electric heating element; still including the direction setting be in the guide of direction chamber, just the guide with still be provided with a plurality of springs between the bottom in direction chamber, it is a plurality of the spring centers on the even interval of installation cavity sets up, the guide stretches out the end connection in direction chamber has the beaker to place the seat, the guide or the beaker is placed the seat and is provided with and stretches to press switch's pressing piece.

Specifically, the experiment that can not meet naked light in the laboratory can be solved through the method of electrical heating, through enclosing around the installation cavity and establishing the direction chamber, the direction sets up the guide in the direction is strong, and set up a plurality of springs between the bottom with guide and direction chamber, place the beaker seat and set up on the guide, and place the seat and set up the pressing member on one of them at guide or beaker, thereby can be equipped with solution and place the back on the beaker seat at beaker inside, because the effect of gravity is that the pressing member can provide pressing force to press switch, thereby make the electrical heating spare heating, place when not placing the beaker or empty beaker on the seat at the beaker, the spring bounces the guide, press switch breaks off the power, the electrical heating spare is out of work, thereby can avoid the condition of dry combustion.

Furthermore, a circular placing groove is formed in the beaker placing seat, and a heat conduction channel which is circular and is coaxially arranged with the placing groove is formed in the bottom of the placing groove. Specifically, the beaker can be positioned by arranging the placing groove, so that the beaker is prevented from sliding.

Furthermore, an asbestos net layer is arranged above the electric heating element.

Further, a heat insulation pad is arranged between the guide piece and the beaker placing seat, and the heat insulation pad is made of glass fiber, asbestos and rock wool.

Further, the installation cavity is a circular cavity, the guide cavity is an annular cavity which is coaxial with the installation cavity, and the guide piece is of a cylindrical structure.

The support comprises a supporting seat and a supporting rod vertically arranged on the base, and the base is arranged above the supporting seat; the support rod is horizontally provided with a fixed rod above the base, and the fixed rod is provided with a test tube clamp.

Furthermore, a sliding sleeve is sleeved on the supporting rod, and the fixing rod is fixedly arranged on the sliding sleeve.

The utility model provides a pair of an experimental fireless heating device for chemistry, its beneficial effect includes:

1. experiments in which open flames cannot be encountered in a laboratory can be solved by the electric heating method.

2. Through enclosing around the installation cavity and establishing the direction chamber, the direction sets up the guide in the direction is strong, and set up a plurality of springs between the bottom with guide and direction chamber, place the beaker and set up on the guide, and place the seat at guide or beaker and set up the pressing member on either one of them, thereby can be equipped with solution at beaker inside and place the seat back of placing at the beaker, because the effect of gravity is that the pressing member can provide pressing force to pressing switch, thereby make the heating of electrical heating spare, place on the seat at the beaker and do not place the beaker or when empty beaker, the spring bounces the guide, pressing switch is with the power disconnection, electrical heating spare is out of work, thereby can avoid the condition of dry combustion.

3. The beaker can be uniformly heated by arranging the asbestos net layer above the electric heating element.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.

Fig. 1 is the overall structure schematic diagram of a chemical experimental fireless heating device provided by the utility model.

Fig. 2 is a schematic structural view of a base in the experimental fireless heating device for chemistry provided by the utility model.

Fig. 3 is a partially enlarged structural view of a portion a in fig. 2.

Fig. 4 is a schematic cross-sectional view at B-B in fig. 2.

Fig. 5 is a schematic structural diagram of a guide in a chemical experimental fireless heating device provided by the present invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The utility model provides a experimental fireless heating device for chemistry, refer to fig. 1-5, as a specific implementation, the device includes base 1, base 1 is provided with upper portion open-ended installation cavity 10, still is provided with direction chamber 11 around installation cavity 10, and is located direction chamber 11 and keeps away from push switch 14 that installation cavity 10 one side set up, be provided with insulating layer 101 on the inside wall of installation cavity 10, still be provided with electric heating element 19 in installation cavity 10, push switch 14 with electric heating element electricity is connected; the beaker placing device is characterized by further comprising a guide piece 12 arranged in the guide cavity 11 in a guiding mode, a plurality of springs 18 are further arranged between the guide piece 12 and the bottom of the guide cavity 11, the springs 18 surround the installation cavity 10 and are arranged at even intervals, the end portion, extending out of the guide cavity 11, of the guide piece 12 is connected with a beaker placing seat 13, and the guide piece 12 or the beaker placing seat 13 is provided with a pressing piece 15 extending towards the pressing switch 14.

Specifically, the base can be chooseed for use metal material and made, wherein electric heating member 19 is connected with power (not shown) through push switch 14, through the work of push switch control electric heating member, through set up insulating layer 101 in the installation cavity, heat transfer when can avoiding electric heating member heating to the outside, can reduce thermal scattering and disappearing on the one hand, can also avoid leading to the outside of base overheated because of the heat transfer, avoid scalding the experimenter, as preferred embodiment, materials such as glass cotton, glass fiber cotton can be chooseed for use to insulating layer 101.

Further, in order to ensure the stability of placing the beaker on the beaker placing seat, referring to fig. 2, a circular placing groove 131 is arranged on the beaker placing seat 13, when in use, the beaker can be placed in the placing groove 131, as a further preferable scheme, a heat conduction channel 132 which is coaxially arranged with the placing groove 131 is arranged at the bottom of the placing groove 131, the heat of the heating element can be transferred to the beaker through the heat conduction channel by the arrangement of the heat conduction channel, and further, a protruding part 190 with the same shape of the heat conduction channel can be arranged on the upper part of the electric heating element, so that the heating element can be directly contacted with the bottom of the beaker, and the heating effect is ensured.

Further, referring to fig. 2, in order to ensure the uniformity of heating the beaker by the electric heating element, an asbestos mesh layer 16 is further arranged above the electric heating element 19.

Further, referring to fig. 2 and 3, in order to ensure that the heat of the beaker placing seat is not transferred outwards, as a preferred embodiment, a heat insulation pad 17 is further disposed between the guide 12 and the beaker placing seat 13, and the guide and the beaker placing seat are isolated by the heat insulation pad, so as to avoid heat transfer, on one hand, heat dissipation can be avoided, and on the other hand, the external part of the base can be prevented from being heated to scald an experimenter.

Further, referring to fig. 4, as a specific embodiment, the installation cavity 10 is a circular cavity, the guide cavity 11 is an annular cavity coaxially disposed with the installation cavity, and the guide 12 is a cylindrical structure.

Further, referring to fig. 1, for the utility model providing a test fireless heating device for chemistry, the device further includes a support 2, the support 2 includes a support base 21, a support rod 22 vertically disposed on the support base 21, the support base 1 is disposed above the support base 21; a fixing rod 23 is horizontally arranged above the base 1 on the supporting rod 22, and a test tube clamp 24 is arranged on the fixing rod 23.

Specifically, the use method of the device is that the chemical reagent needing to be heated is placed in the beaker 3, the beaker is placed on the beaker placing seat, the guide cavity is arranged around the installation cavity in a surrounding manner, the guide part is arranged in the guide cavity in a guiding manner, a plurality of springs are arranged between the guide part and the bottom of the guide cavity, the beaker placing seat is arranged on the guide part, and the pressing part is arranged on one of the guide part and the beaker placing seat, so that the solution filled in the beaker can be placed on the beaker placing seat, the pressing part can provide pressing force for the pressing switch under the action of gravity, the electric heating part is heated, when the beaker is not placed on the beaker placing seat or is an empty beaker, the guide part is bounced up by the springs, the power supply is disconnected by the pressing switch, the electric heating part does not work, and the dry burning condition can be avoided.

The device can also be suitable for the experiment of water bath heating, and its application method is: set up water in the beaker, place the beaker and place the seat on, place the chemical reagent that will heat at the test tube, through 24 centre gripping test tubes of test tube clamp, place the bottom of test tube in the water of beaker to can carry out the water bath heating.

As a further preferable mode, referring to fig. 1, a sliding sleeve 25 is sleeved on the supporting rod 22, the fixing rod 23 is fixedly arranged on the sliding sleeve 25, and a locking bolt 251 is arranged on the sliding sleeve, so that the sliding sleeve can be locked on the fixing rod through the locking bolt, and the height of the fixing rod of the test tube can be adjusted to adapt to test tubes with different lengths.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The experimental fireless heating device for chemistry is characterized by comprising a base (1), wherein the base (1) is provided with an installation cavity (10) with an upper opening, a guide cavity (11) is further arranged around the installation cavity (10), and a press switch (14) is arranged on one side, away from the installation cavity (10), of the guide cavity (11), a heat insulation layer (101) is arranged on the inner side wall of the installation cavity (10), an electric heating element (19) is further arranged in the installation cavity (10), and the press switch (14) is electrically connected with the electric heating element (19); the beaker-supporting device is characterized by further comprising a guide piece (12) arranged in the guide cavity (11), a plurality of springs (18) are further arranged between the guide piece (12) and the bottom of the guide cavity (11), the springs (18) surround the installation cavity (10) and are evenly arranged at intervals, the end portion, extending out of the guide cavity (11), of the guide piece (12) is connected with a beaker placing seat (13), and the guide piece (12) or the beaker placing seat (13) is provided with a pressing piece (15) extending to the pressing switch (14).

2. An experimental fireless heating device for chemistry according to claim 1, characterized in that a circular placing groove (131) is provided on the beaker placing seat (13), and the bottom of the placing groove (131) is provided with a heat conducting channel (132) coaxially arranged with the placing groove (131).

3. A laboratory fireless heating apparatus for chemistry as claimed in claim 2, characterized in that an asbestos mesh layer (16) is also provided above said electric heating element (19).

4. A laboratory fireless heating device for chemistry according to claim 2, characterized in that between the guiding element (12) and the beaker holder (13) there is also provided an insulating mat (17), the material of the insulating mat (17) being glass fibre, rock wool or rock wool.

5. A laboratory fireless heating device for chemistry according to claim 2, characterized in that said installation cavity (10) is a circular cavity, said guiding cavity (11) is an annular cavity arranged coaxially with said installation cavity, and said guiding element (12) is a cylindrical structure.

6. A laboratory fireless heating apparatus for chemistry as claimed in claim 2, further comprising a bracket (2), said bracket (2) comprising a support base (21), a support rod (22) vertically disposed on said support base (21), said base (1) disposed above said support base (21); a fixing rod (23) is horizontally arranged above the base (1) on the supporting rod (22), and a test tube clamp (24) is arranged on the fixing rod (23).

7. A test flameless heating apparatus for chemistry according to claim 6, characterized in that the support rod (22) is sleeved with a sliding sleeve (25), and the fixing rod (23) is fixedly arranged on the sliding sleeve (25).