CN210431931U

CN210431931U - PTC overcoat teflon heater

Info

Publication number: CN210431931U
Application number: CN201921087353.4U
Authority: CN
Inventors: 宋平
Original assignee: Changzhou Huachi Electromechanical Technology Co ltd
Current assignee: Changzhou Huachi Electromechanical Technology Co ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-04-28
Anticipated expiration: 2029-07-11

Abstract

The utility model discloses a PTC overcoat teflon heater, including terminal box, metal outer tube, copper sheet and heat conduction aluminium support, the one end fixed mounting of metal outer tube has the connecting pipe, the outer end fixed mounting of connecting pipe has the terminal box, the inboard of terminal box is provided with the spread groove, the inside fixed mounting of spread groove has power source, the one end movable mounting of terminal box has sealed lid, one side that sealed lid is relative with the terminal box is provided with the go-between, the inside of metal outer tube is provided with the heat conduction aluminium support rather than the inner wall contact. The utility model discloses rational in infrastructure, make this kind of PTC overcoat teflon heater avoid traditional heater to make heating pipe circular telegram back temperature can reach more than 1000 ℃ in the use through having installed a series of structures, exceeded teflon pipe melting point, the teflon pipe of easy overcoat burns and melts. The PTC heating pipe has the following advantages: the outer sleeve Teflon tube is guaranteed not to be melted, the safety of production equipment is guaranteed, and corrosion of strong acid, alkali and salt is prevented.

Description

PTC overcoat teflon heater

Technical Field

The utility model belongs to the technical field of the heating, concretely relates to PTC overcoat teflon heater.

Background

The teflon heaters include an electric teflon heater, a steam teflon heater and a hot teflon water heater, the teflon heater includes an electric teflon heater, a steam teflon heater and a hot teflon water heater, the teflon, i.e., teflon, is also commonly called teflon, etc. because of the sounding, and the steam teflon heater and the hot teflon water heater are heaters using a small diameter teflon hose as a heat transfer component. The Teflon steam heater and the Teflon hot water heater are mainly used for heat exchange of various strong corrosive media with working pressure of 0.2-0.4 MPa and working temperature below 200 ℃, for example, cooling or heating of sulfuric acid, chloride solution with strong corrosion, acetic acid and caustic medium, and the Teflon steam heater and the Teflon hot water heater are structurally provided with a shell-and-tube heater and a tube-bundle heater. The main parts of the components are pipe bundles consisting of a plurality of small-diameter thin-wall Teflon heat transfer hoses, and the common pipe specifications are various, and the outer diameter multiplied by the wall thickness is 36mm multiplied by 0.3-0.6 mm respectively. The tube bundle comprises 60-5000 tubes and the two ends are separated from each other by a Teflon tape. The tube bundle is inserted in a ring and welded into an integral honeycomb tube sheet. The other parts of the Teflon heater are similar to a common shell-and-tube heater and an immersion heater which use metal tubes as heat transfer components, the connection strength between a tube bundle of the Teflon heater and a tube plate reaches 1.5Mpa, and the Teflon heater can be made into various forms by combination, is an ideal choice for heat transfer of strong corrosivity, strong acid and strong oxidizing medium, and is deeply favored by the majority of users.

However, the existing outer sleeve Teflon pipe and the inner 316 pipe are not clung to each other individually because the outer diameter of the stainless steel pipe or the titanium pipe is not uniform, namely, the reason of tolerance is that the existing clung to the existing solution is that the inner hole of the outer sleeve Teflon pipe is dozens of wires smaller than the outer diameter of the stainless steel pipe, the stainless steel pipe and the Teflon pipe are put into an oven to be heated for about 150 ℃ for 30 minutes before the sleeve pipe is sleeved, then the sleeve pipe is taken out to be thermally expanded, and the stainless steel pipe and the Teflon pipe are clung to each other after being cooled.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PTC overcoat teflon heater, current overcoat teflon pipe and interior 316 pipe that proposes in solving above-mentioned background art have do not hug closely alone, the reason is that nonrust steel pipe or titanium pipe external diameter are inhomogeneous to cause, tolerance reason causes promptly, this kind does not hug closely has the solution at present, it is exactly that overcoat teflon pipe inner bore is dozens of silks less than the stainless steel external diameter, raise the temperature of oven 30 minutes about 150 ℃ through putting into nonrust steel pipe and teflon pipe before the sleeve pipe, then take out and carry out the sleeve pipe, the reason of thermal expansion, the problem that will hug closely after the cooling.

In order to achieve the purpose, the utility model provides the following technical scheme; the utility model provides a PTC overcoat teflon heater, includes terminal box, metal outer tube, copper sheet and heat conduction aluminium support, the one end fixed mounting of metal outer tube has the connecting pipe, the outer end fixed mounting of connecting pipe has the terminal box, the inboard of terminal box is provided with the spread groove, the inside fixed mounting of spread groove has power source, the one end movable mounting of terminal box has sealed lid, sealed lid is provided with the go-between with the relative one side of terminal box, the inside of metal outer tube is provided with the heat conduction aluminium support rather than the inner wall contact, be provided with a plurality of axial device chambeies on the heat conduction aluminium support, the inboard fixed mounting in device chamber has the copper sheet, and the copper sheet passes through insulating high temperature paper cladding, the one end of copper sheet is passed through the wire and is connected with power source, the.

Preferably, the other end of the metal outer tube is fixedly provided with a buffer tube, and the inner cavity of the buffer tube is communicated with the heating cavity.

Preferably, the outer surface of the connecting ring and the inner surface of the connecting groove are both provided with threads, and the connecting ring and the connecting groove are movably twisted through the threads.

Preferably, the handle is fixedly arranged on the outer side of the sealing cover through a bolt, and the insulating paper and the bottom wall of the device cavity are glued by high-temperature glue.

Preferably, the heat-conducting aluminum bracket comprises a tubular aluminum profile arranged inside the metal outer pipe and in contact with the inner wall of the metal outer pipe, and a positioning aluminum channel arranged inside the aluminum profile.

Preferably, the number of device chamber can carry out reasonable setting according to actual body model and specification.

Compared with the prior art, the utility model provides a PTC jacket Teflon heater, which has the following beneficial effects;

1. the utility model discloses PTC heater itself is constant temperature heating ware, is different from traditional heater strip and makes the heater, and traditional heater strip circular telegram back temperature rises always, can reach more than 1000 ℃, and PTC heater highest temperature just reaches 220 ℃;

2. after the Teflon tube is sleeved outside the PTC heater, the sleeved Teflon tube cannot be damaged when the PTC heater is electrified for dry heating, the melting point of the Teflon tube is 350 ℃, and the highest temperature of the PTC heater is 220 ℃ when the PTC heater is electrified for heating, so that the Teflon tube can never be melted outside the PTC heater; the temperature of a heating pipe made of the traditional heating wire can reach over 1000 ℃ after being electrified, exceeds the melting point of the Teflon pipe, and the Teflon pipe which is easy to coat is easy to melt. The PTC heating pipe has the following advantages: the outer sleeve Teflon tube is guaranteed not to be melted, the safety of production equipment is guaranteed, and corrosion of strong acid, alkali and salt is prevented.

Drawings

The accompanying drawings, which 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;

fig. 1 is a front view of the junction box according to the present invention;

fig. 2 is a schematic view of the internal structure of the junction box according to the present invention;

fig. 3 is a schematic view of the internal structure of the metal outer tube according to the present invention;

fig. 4 is a side view of the present invention;

in the figure; 1-a handle; 2-sealing cover; 3-a junction box; 4-connecting pipe; 5-a metal outer tube; 6-a buffer tube; 7-device chamber; 8-copper sheet; 9-heating the chamber; 10-a thermally conductive aluminum support; 11-a power interface; 12-a connecting trough; 13-a thread; 14-connecting ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution; a PTC jacket Teflon heater comprises a junction box 3, a metal outer tube 5, a copper sheet 8 and a heat-conducting aluminum support 10, wherein one end of the metal outer tube 5 is fixedly provided with a connecting tube 4, the outer end of the connecting tube 4 is fixedly provided with the junction box 3, the inner side of the junction box 3 is provided with a connecting groove 12, the inner part of the connecting groove 12 is fixedly provided with a power supply interface 11, one end of the junction box 3 is movably provided with a sealing cover 2, one side of the sealing cover 2, which is opposite to the junction box 3, is provided with a connecting ring 14, the inside of the metal outer tube 5 is provided with the heat-conducting aluminum support 10 which is contacted with the inner wall of the metal outer tube, the heat-conducting aluminum support 10 is provided with a plurality of axial device cavities 7, the inner side of the device cavities 7 is fixedly provided with the copper sheet 8, the copper sheet 8 is coated by insulating high-temperature paper, the melting point of the Teflon tube is 350 ℃, and the PTC heater is electrified to heat the highest temperature to be 220 ℃, so that the Teflon tube of the rice can never melt; the temperature of a heating pipe made of the traditional heating wire can reach over 1000 ℃ after being electrified, exceeds the melting point of the Teflon pipe, and the Teflon pipe which is easy to coat is easy to melt. The PTC heating pipe has the following advantages: the outer sleeve Teflon tube is guaranteed not to be melted, the safety of production equipment is guaranteed, and corrosion of strong acid, alkali and salt is prevented.

The other end of the metal outer tube 5 is fixedly provided with a buffer tube 6, and the inner cavity of the buffer tube 6 is communicated with the heating cavity 9, so that the internal heat can be conducted to a certain extent.

The outer surface of the connecting ring 14 and the inner surface of the connecting groove 12 are both provided with threads 13, and the connecting ring 14 and the connecting groove 12 are movably twisted through the threads 13, so that the junction box 3 and the sealing cover 2 can be more conveniently mounted and dismounted.

The outside of sealed lid 2 has handle 1 through bolt fixed mounting, and the diapire of insulating paper and device chamber 7 is sticky firm with the high temperature, can play certain guard action to inside device, prolongs the life of the inside device of heater.

The heat conducting aluminum support 10 comprises a tubular aluminum profile which is arranged inside the metal outer tube 5 and is in contact with the inner wall of the metal outer tube, and a positioning aluminum channel which is arranged in the aluminum profile, so that the heating effect is better and more efficient, and the waste of heat is avoided.

The working principle and the using process of the utility model are as follows; before the PTC outer sleeve Teflon heater is used, the PTC outer sleeve Teflon heater needs to be checked, and can be used after the checking is finished, when heating work needs to be carried out, the heater and a power socket can be connected and electrified through the power interface 11, the PTC heater is a constant-temperature heater in the using process, the PTC heater is different from a heater made of a traditional heating wire, the temperature of the traditional heating wire rises all the time after being electrified and can reach over 1000 ℃, the highest temperature of the PTC heater reaches 220 ℃, after the PTC heater is sleeved with the Teflon tube, the Teflon tube of the outer sleeve cannot be damaged during electrifying and dry burning, the melting point of the Teflon tube is 350 ℃, the highest temperature of the PTC heater is 220 ℃ after being electrified and heated, and the Teflon tube cannot be melted forever; the traditional heating wire is made into a heating pipe, the temperature can reach more than 1000 ℃ after the heating pipe is electrified, the melting point of the Teflon pipe is exceeded, the Teflon pipe which is easy to coat is easy to melt, and the PTC heating pipe has the greatest advantages that: the outer sleeve Teflon tube is guaranteed not to be melted, the safety of production equipment is guaranteed, and corrosion of strong acid, alkali and salt is prevented.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a PTC overcoat teflon heater, includes terminal box (3), metal outer tube (5), copper sheet (8) and heat conduction aluminium support (10), its characterized in that: the device is characterized in that a connecting pipe (4) is fixedly mounted at one end of the metal outer pipe (5), a junction box (3) is fixedly mounted at the outer end of the connecting pipe (4), a connecting groove (12) is arranged on the inner side of the junction box (3), a power supply interface (11) is fixedly mounted inside the connecting groove (12), a sealing cover (2) is movably mounted at one end of the junction box (3), a connecting ring (14) is arranged on one side, opposite to the junction box (3), of the sealing cover (2), a heat-conducting aluminum support (10) in contact with the inner wall of the metal outer pipe (5) is arranged inside the metal outer pipe, a plurality of axial device cavities (7) are arranged on the heat-conducting aluminum support (10), a copper sheet (8) is fixedly mounted on the inner side of the device cavities (7), the copper sheet (8) is coated by insulating high-temperature paper, and a heating chamber (9) is arranged on the inner side of the copper sheet (8).

2. A PTC sheathed teflon heater as claimed in claim 1, wherein: the other end of the metal outer tube (5) is fixedly provided with a buffer tube (6), and the inner cavity of the buffer tube (6) is communicated with the heating cavity (9).

3. A PTC sheathed teflon heater as claimed in claim 1, wherein: the outer surface of the connecting ring (14) and the inner surface of the connecting groove (12) are both provided with threads (13), and the connecting ring (14) and the connecting groove (12) are movably twisted through the threads (13).

4. A PTC sheathed teflon heater as claimed in claim 1, wherein: the outside of sealed lid (2) is through bolt fixed mounting have handle (1), and the insulating paper is glued firmly with the diapire of device chamber (7) with high temperature.

5. A PTC sheathed teflon heater as claimed in claim 1, wherein: the heat-conducting aluminum bracket (10) comprises a tubular aluminum profile arranged in the metal outer pipe (5) and in contact with the inner wall of the metal outer pipe, and a positioning aluminum channel arranged in the aluminum profile.

6. A PTC sheathed teflon heater as claimed in claim 1, wherein: the number of the device cavities (7) can be reasonably set according to actual pipe body models and specifications.