Quick-release electric heating mantle for heating flask

Abstract

The utility model discloses a quick detachable electric heating jacket applied to flask heating, including electric heating jacket main part, the middle part of electric heating jacket main part is provided with and heats the inner cover, electric heating jacket main part one side still is provided with thermometer adjusting support, the inside of heating inner cover places the protective sleeve, the outer surface of protective sleeve and the inner surface of heating inner cover contact, the upper part of electric heating jacket main part buckle and is provided with the sealing sleeve of dismounting, through the protective sleeve isolation flask and heating inner cover, and sealing sleeve carries out the bottle outer seal simultaneously, can avoid the contamination and infiltrate the fiber layer and wrap resistance wire, fundamentally solve " resistance wire burns paste and destroys " problem, even if flask breaks, and the metal material of protective sleeve can prevent the corrosive solution and contact heating element, prevent the circuit short circuit and fire risk. Meanwhile protective sleeve can be separately disassembled and washes or changes, need not whole body to discard electric heating jacket main part, and maintenance cost reduces.

Description

Technical Field

[0001] This utility model relates to the field of electric heating mantle technology, and in particular to a quick-release electric heating mantle for use in flask heating. Background Technology

[0002] Heating mantles are common laboratory heating instruments, typically consisting of a hemispherical heating inner sleeve woven from alkali-free glass fiber and metal heating wire, along with control circuitry. They are widely used for precise temperature control in glass containers such as flasks, offering advantages such as rapid heating, high temperatures, and ease of operation. However, traditional heating mantles have significant drawbacks: During heating reactions, substances inside the flask may suddenly erupt due to chemical instability, with splashes directly contaminating the surface of the heating inner sleeve. Contaminants (especially high-boiling-point or viscous substances) can penetrate the fiber layer of the inner sleeve, enveloping the metal heating wire. Abnormal burning of the resistance wire and carbonization of contaminants can cause localized short circuits, leading to overheating and melting of the heating wire. Severe contamination necessitates replacing the entire heating mantle, resulting in high costs and interruptions to the experiment. Furthermore, the woven structure of the heating inner sleeve is difficult to thoroughly clean, and residues can affect the accuracy of subsequent experiments. Current solutions often involve external protective covers, but traditional covers cannot be integrated with the heating mantle and are cumbersome to disassemble. Utility Model Content

[0003] The purpose of this invention is to overcome the problems of existing electric heating mantles, such as contaminants seeping into the heating wire, causing overheating and melting, resulting in short circuits and difficulties in cleaning, and to provide a quick-release electric heating mantle for flask heating.

[0004] A quick-release electric heating mantle for flask heating includes a heating mantle body, a heating inner sleeve disposed in the middle of the heating mantle body; a thermometer adjustment bracket is also disposed on one side of the heating mantle body; a protective sleeve is placed inside the heating inner sleeve, and the outer surface of the protective sleeve is in contact with the inner surface of the heating inner sleeve; a sealing sleeve is fastened and detachable at the upper part of the heating mantle body.

[0005] Furthermore, the protective sleeve includes a spherical sleeve body, and a limiting ring is integrally provided on the upper edge of the spherical sleeve body; the limiting ring body is provided with limiting handles at both ends.

[0006] Furthermore, the surface of the spherical sleeve is provided with micropores.

[0007] Furthermore, the spherical sleeve is made of any one of 316L stainless steel, Hastelloy C276, or Monel alloy.

[0008] Furthermore, an annular groove is provided on the upper part of the heating sleeve body, and the annular groove is located at the edge of the heating inner sleeve; limiting grooves are also provided on both sides of the annular groove; the limiting ring is fitted in the annular groove, and the limiting handle is fitted in the limiting groove and partially extends out of the limiting groove.

[0009] Furthermore, the upper surface of the heating sleeve body is provided with a limiting post; the sealing sleeve includes a duckbill portion, the bottom of the duckbill portion is provided with a straight portion, the straight portion is provided with a positioning hole, the positioning hole passes through the limiting post; the upper part of the duckbill portion is also provided with a limiting ring.

[0010] Furthermore, the sealing sleeve is selected from either fluororubber or perfluoroether rubber.

[0011] The beneficial effects of this invention are as follows: By isolating the flask from the heating inner sleeve with a protective sleeve, and simultaneously sealing the outside of the flask with a sealing sleeve, contaminants can be prevented from penetrating into the fiber layer and wrapping the resistance wire, fundamentally solving the problem of "resistance wire burning and damage". Even if the flask breaks, the metal material of the protective sleeve can prevent corrosive solutions from contacting the heating element, preventing short circuits and fire risks. At the same time, the protective sleeve can be disassembled and cleaned or replaced separately, eliminating the need to discard the entire heating jacket body, thus reducing maintenance costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the device;

[0013] Figure 2 This is a schematic diagram of the exploded structure of the device;

[0014] Figure 3 This is a schematic diagram of the internal structure of the device;

[0015] Figure 4 This is a schematic diagram of the main structure of the electric heating mantle;

[0016] Figure 5 This is a schematic diagram of the protective sleeve structure;

[0017] Figure 6 This is a schematic diagram of the sealing sleeve structure;

[0018] In the diagram, 1-Heating mantle body, 11-Heating inner sleeve, 12-Annular groove, 13-Limiting groove, 14-Limiting post, 2-Thermometer adjustment bracket, 3-Protective sleeve, 31-Spherical sleeve, 32-Limiting ring, 33-Limiting handle, 34-Microhole, 4-Sealing sleeve, 41-Duckbill part, 42-Limiting ring, 43-Straight part, 44-Positioning hole. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] Example 1

[0022] like Figures 1-6 As shown, a quick-release electric heating mantle for flask heating includes a heating mantle body 1, wherein a heating inner sleeve 11 is provided in the middle of the heating mantle body 1, specifically configured as a hemispherical shape, and is made of nickel-chromium alloy resistance wire wrapped with an alkali-free glass fiber braided layer.

[0023] The heating sleeve body 1 can be quickly disassembled. The upper edge of the heating sleeve body 1 is machined with an annular groove 12, and two limiting grooves 13 are symmetrically opened on both sides of the groove. Two stainless steel limiting posts 14 are welded to the upper surface of the heating sleeve body 1.

[0024] A thermometer adjustment bracket 2 is also provided on one side of the main body 1 of the electric heating mantle. Specifically, the specific structure of the thermometer adjustment bracket 2 is existing technology and will not be described in detail here. As long as it can achieve multi-angle and multi-directional adjustment, it is acceptable.

[0025] A protective sleeve 3 is placed inside the heating inner sleeve 11, and the outer surface of the protective sleeve 3 is in contact with the inner surface of the heating inner sleeve 11. Specifically, the protective sleeve 3 is stamped into a spherical sleeve body 31 from 316L stainless steel plate, with the upper edge folded to form a limiting ring body 32. Rectangular limiting handles 33 are welded to both ends of the ring body, and the handles extend from the limiting grooves 13. The surface of the sleeve body is laser-drilled to form uniformly distributed micropores 34. The micropores 34 allow heat to be efficiently transferred to the flask and prevent most solid or viscous liquid splashes from directly impacting the outer heating sleeve. At the same time, they allow steam or a small amount of liquid to seep out, preventing the inner layer from becoming a pressure vessel.

[0026] Preferably, the protective sleeve 3 can also be made of Hastelloy C276 or Monel alloy.

[0027] The upper part of the electric heating mantle body 1 is fitted with a sealing sleeve 4.

[0028] The sealing sleeve 4 includes a duckbill portion 41, the bottom of which is provided with a straight portion 43, and a positioning hole 44 is provided on the straight portion 43. The positioning hole 44 passes through the limiting post 14; a limiting ring 42 is also provided on the upper part of the duckbill portion 41.

[0029] The sealing sleeve 4 is molded from fluororubber or perfluoroether rubber and includes a conical duckbill portion 41, which can elastically clamp onto the neck of the flask. This allows it to tightly wrap around flask necks of different diameters and form a physical barrier to prevent liquid from flowing down the bottle wall or splashes from overflowing from the top into the space between the inner and outer layers. A reinforcing elastic limiting ring 42 at the top enhances the sealing performance with the flask, and two positioning holes 44 at the bottom straight portion 43 are provided to match the limiting post 14, providing an interference fit.

[0030] Workflow

[0031] Step 1: Hold the limiting handle 33 of the protective sleeve 3 and press down the limiting ring 32 with the annular groove 12 so that the outer surface of the protective sleeve 3 contacts the inner surface of the heating inner sleeve 11, thus completing the installation of the protective sleeve 3.

[0032] Step 2: Place the flask into the protective sleeve 3; align the positioning hole 44 of the sealing sleeve 4 with the limiting post 14 and press down, with the duckbill part 41 tightly against the neck of the flask; Step 3: If the solution in the flask erupts, the sealing sleeve 4 can initially prevent the solution from entering the protective sleeve, and a small amount of solution will enter the protective sleeve 3 through the gap. The protective sleeve 3 can receive contaminants, and the micropores 34 prevent the liquid film from isolating heat transfer; lift the limiting handle 33 to remove the contaminated protective sleeve 3 as a whole and replace it with a spare sleeve.

[0033] The above-described embodiments merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A quick-release electric heating mantle for flask heating, comprising a heating mantle body (1), wherein a heating inner sleeve (11) is provided in the middle of the heating mantle body (1); a thermometer adjustment bracket (2) is also provided on one side of the heating mantle body (1), characterized in that: The heating inner sleeve (11) has a protective sleeve (3) inside, and the outer surface of the protective sleeve (3) is in contact with the inner surface of the heating inner sleeve (11); the upper part of the electric heating sleeve body (1) is provided with a sealing sleeve (4) that can be fastened and disassembled.

2. The quick-release electric heating mantle for flask heating according to claim 1, characterized in that: The protective sleeve (3) includes a spherical sleeve (31), and a limiting ring (32) is integrally provided on the upper edge of the spherical sleeve (31); the limiting ring (32) is provided with limiting handles (33) at both ends.

3. A quick-release electric heating mantle for flask heating according to claim 2, characterized in that: The surface of the spherical sleeve (31) is provided with micropores (34).

4. A quick-release electric heating mantle for flask heating according to claim 2 or 3, characterized in that: The spherical sleeve (31) is made of any one of 316L stainless steel, Hastelloy C276, or Monel alloy.

5. A quick-release electric heating mantle for flask heating according to claim 2, characterized in that: The upper part of the electric heating sleeve body (1) is provided with an annular groove (12), which is located at the edge of the heating inner sleeve (11); the two sides of the annular groove (12) are also provided with limiting grooves (13); the limiting ring (32) is fitted in the annular groove (12), and the limiting handle (33) is fitted in the limiting groove (13) and partially extends out of the limiting groove (13).

6. A quick-release electric heating mantle for flask heating according to claim 1, characterized in that: The upper surface of the electric heating sleeve body (1) is also provided with a limiting post (14); the sealing sleeve (4) includes a duckbill part (41), the bottom of the duckbill part (41) is provided with a straight part (43), the straight part (43) is provided with a positioning hole (44), the positioning hole (44) passes through the limiting post (14); the upper part of the duckbill part (41) is also provided with a limiting ring (42).

7. A quick-release electric heating mantle for flask heating according to claim 1 or 6, characterized in that: The sealing sleeve (4) is selected from either fluororubber or perfluoroether rubber.

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