CN214901331U

CN214901331U - PTC heater convenient to change and overhaul heating pipe

Info

Publication number: CN214901331U
Application number: CN202120513366.4U
Authority: CN
Inventors: 刘兴波
Original assignee: Suzhou Ruixintong Electric Appliance Co ltd
Current assignee: Suzhou Ruixintong Electric Appliance Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-11-26
Anticipated expiration: 2031-03-11

Abstract

The utility model discloses a PTC heater convenient to change and overhaul heating pipe, its technical scheme is: the motor comprises a housin, the inside PTC heating element body that is equipped with of casing, the inside fixture that is equipped with of casing, fixture extends the casing outside, fixture includes two centre gripping subassemblies, the centre gripping subassembly includes the diaphragm, the beneficial effects of the utility model are that: through fixture's design, make the PTC heater can carry out inseparable centre gripping in the heating tube, during the circumstances such as the later stage meets needs to be changed and overhauls the maintenance when leading to, also this device of direct operation takes out the PTC heater, greatly reduced the use threshold, whether carry out the centre gripping to the PTC heater through this device direct control in addition, even operate repeatedly many times and can not cause the damage to fixture and PTC heater yet, avoided the user because the circumstances such as dismantlement process misoperation takes place and cause economic loss's the circumstances emergence.

Description

PTC heater convenient to change and overhaul heating pipe

Technical Field

The utility model relates to a PTC heater technical field of heating pipe, concretely relates to PTC heater convenient to change and overhaul heating pipe.

Background

The PTC heater generally adopts PTC ceramic heating elements and aluminum tubes to form, the PTC heater has the advantages of small thermal resistance and high heat exchange efficiency, is an automatic constant-temperature and power-saving electric heater, and is characterized in that the surface of the electric heating tube heater does not turn red under any application condition on the aspect of safety performance, so that potential safety hazards such as scalding, fire and the like are caused, and the PTC heater is generally widely applied to equipment which needs to provide warm air, such as air conditioners, hot air curtains, dehumidifiers, dryers, clothes dryers, warm air blowers, automobiles and the like.

The prior art has the following defects: the existing PTC heater of the heating pipe has various product types on the modeling power due to the use of different purposes, but generally, when the PTC heater is installed, the PTC heater is placed in the heating pipe through parts such as bolts, and the like, and more particularly, the PTC heater is directly welded in the heating pipe in order to ensure the sealing performance and other factors, although the PTC heater can be firmly placed in the heating pipe by the method, the PTC heater belongs to a consumable product and needs to be replaced, maintained and repaired regularly, so the traditional installation method can cause inconvenience and time and labor waste when the PTC heater is detached, and meanwhile, if the PTC heater is detached for multiple times, a fixing mechanism can be damaged, and unnecessary economic loss is caused to a user.

Therefore, it is necessary to invent a PTC heater which is convenient for replacing and repairing the heating tube.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a PTC heater convenient to change and overhaul heating pipe, through fixture's design, make the PTC heater can carry out inseparable centre gripping in the heating pipe, during the later stage meets the circumstances such as need change maintenance again during expert, also can directly operate this device and take out the PTC heater to solve traditional PTC heater and demolish more troublesome problem after installing.

In order to achieve the above object, the present invention provides the following technical solutions: a PTC heater convenient for replacing and repairing a heating pipe comprises a shell, wherein a PTC heater body is arranged inside the shell, a clamping mechanism is arranged inside the shell, and the clamping mechanism extends out of the shell;

the clamping mechanism comprises two clamping components, each clamping component comprises a transverse plate, the transverse plate is fixedly arranged in the shell, a movable plate is arranged in the shell, the movable plate penetrates through one side of the shell and extends out of the shell, a movable frame is arranged outside the movable plate, vertical plates are fixedly arranged at the top and the bottom of the movable frame respectively, two L-shaped limiting plates are fixedly arranged at one side of the shell, first telescopic rods are fixedly arranged at one sides of the two L-shaped limiting plates respectively, first springs are fixedly arranged at the outer parts of the two first telescopic rods respectively, one sides of the two first telescopic rods are fixedly connected with one sides of the two vertical plates respectively, second telescopic rods are fixedly arranged at the top and the bottom of the movable plate respectively, second springs are fixedly arranged at the outer parts of the two second telescopic rods respectively, limiting blocks are fixedly arranged on the two second telescopic rods respectively, and first inclined rods are arranged at one sides of the two limiting blocks respectively, one side of each of the two first inclined rods is movably connected with one side of each of the two limit blocks through a movable hinged support, the two first inclined rods are movably connected with the top and the bottom of the movable frame through movable hinged supports, a box body is fixedly arranged on one side of the movable plate, a U-shaped plate is fixedly arranged on one side of the movable frame, the U-shaped plate penetrates through one side of the box body and extends into the box body, baffles are fixedly arranged on the top and the bottom of the box body respectively, a pressing plate is arranged inside the box body and penetrates through the box body and extends out of the box body, two third telescopic rods are fixedly arranged on one side of the pressing plate, third springs are fixedly arranged outside the two third telescopic rods respectively, one sides of the two third telescopic rods are fixedly connected with one sides of the two baffles respectively, two pushing blocks are further arranged inside the shell body, a transverse rod is fixedly arranged between the two pushing blocks, and a movable plate is fixedly arranged on one side of the pushing blocks, a push-pull plate is fixedly arranged on one side of the other push block, penetrates through one side of the shell and extends out of the shell;

the clamping mechanism further comprises an auxiliary component, the auxiliary component comprises a push-pull block, and one side of the push-pull block is fixedly connected with one side of the push-pull plate.

Preferably, a hole groove is formed in the pressing plate, two L-shaped pushing blocks are fixedly arranged on one side of the pressing plate, transverse grooves are formed in the inner sides of the L-shaped pushing blocks respectively, two first movable blocks are arranged on the inner sides of the L-shaped pushing blocks respectively, two first sliding blocks are fixedly arranged on the first movable blocks respectively, and the two first sliding blocks are arranged inside the two transverse grooves respectively.

Preferably, two the baffle is last to be fixed respectively and is equipped with the fourth telescopic link, two the fourth telescopic link outside is fixed respectively and is equipped with the fourth spring, two it is fixed respectively to be equipped with the second movable block on the fourth telescopic link.

Preferably, a first chute has been seted up at the diaphragm top, the fixed first connecting plate that is equipped with in movable plate bottom, the fixed second slider that is equipped with in first connecting plate bottom, inside first chute was located to the second slider, the inside first long board that still is equipped with of diaphragm, first long board runs through the diaphragm and extends the diaphragm outside, the fixed second down tube that is equipped with in first long board top, second down tube bottom and long board top are through activity hinge seat swing joint, second down tube top and movable plate bottom are through activity hinge seat swing joint.

Preferably, two second spouts, two have been seted up to casing inner chamber bottom promote the piece bottom and fixedly be equipped with the third slider, two inside the third slider fixed respectively locating two second spouts, two promote the piece top and seted up the chute respectively, two promote the piece top and still be equipped with the second long slab respectively, two the second long slab bottom is fixed respectively and is equipped with the sloping block, two inside two chutes, two were located respectively to the sloping block the second long slab all runs through the diaphragm and extends the diaphragm outside, two the second long slab top is fixed respectively and is equipped with splint, two the splint top all contacts with PTC heater body bottom.

Preferably, a movable groove is further formed in the bottom of the inner cavity of the shell, a fourth sliding block is fixedly arranged at the bottom of the movable plate and is arranged inside the movable groove, a cover plate is fixedly arranged at the bottom of the first long plate, external threads are arranged at the bottom of the cover plate, internal threads are arranged at the top of the movable plate and are meshed with the internal threads, a sealing door is arranged on the front side of the shell and is connected with the front side of the shell through a hinge.

Preferably, the auxiliary component comprises a push-pull ring, and one side of the push-pull ring is fixedly connected with one side of the push-pull plate.

The utility model has the advantages that:

1. the utility model discloses a fixture's design, make PTC heater carry out inseparable centre gripping in the heating tube, meet when need change the condition such as maintenance later stage again when leading to, also can directly operate this device and take out PTC heater, and whole operation process is simpler, greatly reduced the use threshold, it is simple easily handy, in addition through this device direct control whether carry out the centre gripping to PTC heater, even repeated operation many times can not cause the damage to fixture and PTC heater yet, avoided the user to cause economic loss's condition to take place because of circumstances such as dismantlement process misoperation;

2. the utility model discloses a simple mechanism design, time PTC heater is when obtaining the centre gripping, add too much spare part not, do not occupy the inside limited space of a large amount of heating pipes because fixture, make the volume of heating pipe can not make the adjustment because of receiving the influence, simultaneously in order to prevent that the user from carrying out the mistake and touching the switch and cause the condition emergence of abandoning the PTC heater centre gripping, this device has still used a plurality of spare parts to avoid the user to carry out the mistake and touches, it is safer to use, simple structural design is favorable to manufacturing more simultaneously, be fit for using widely on a large scale.

Drawings

Fig. 1 is a perspective view provided by the present invention;

fig. 2 is a schematic view of the overall structure provided by the present invention;

fig. 3 is an enlarged view of a point a in fig. 2 according to the present invention;

fig. 4 is a schematic structural diagram of embodiment 2 provided by the present invention;

in the figure: the PTC heater comprises a shell 1, a PTC heater body 2, a transverse plate 3, a moving plate 4, a moving frame 5, a vertical plate 6, a limiting plate 7L-shaped, a first telescopic rod 8, a first spring 9, a second telescopic rod 10, a second spring 11, a limiting block 12, a first inclined rod 13, a box 14, a U-shaped plate 15, a baffle 16, a pressing plate 17, a third telescopic rod 18, a third spring 19, a pushing block 20, a cross rod 21, a movable plate 22, a pushing and pulling plate 23, a pushing and pulling block 24, a pushing and pulling block 25L-shaped pushing block 26, a clamping plate 27, a cover plate 28, a sealing door 29 and a pull ring pushing and pulling ring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Embodiment 1, referring to fig. 1-3, the PTC heater convenient for replacing and repairing a heating pipe provided by the present invention comprises a housing 1, a PTC heater body 2 is arranged inside the housing 1, a clamping mechanism is arranged inside the housing 1, and the clamping mechanism extends out of the housing 1;

the clamping mechanism comprises two clamping components, each clamping component comprises a transverse plate 3, the transverse plates 3 are fixedly arranged inside a shell 1, a movable plate 4 is arranged inside the shell 1, the movable plate 4 penetrates through one side of the shell 1 and extends out of the shell 1, a movable frame 5 is arranged outside the movable plate 4, the tops and the bottoms of the movable frames 5 are respectively and fixedly provided with a vertical plate 6, one side of the shell 1 is fixedly provided with two L-shaped limiting plates 7, one side of each L-shaped limiting plate 7 is respectively and fixedly provided with a first telescopic rod 8, the outsides of the two first telescopic rods 8 are respectively and fixedly provided with a first spring 9, one side of each first telescopic rod 8 is respectively and fixedly connected with one side of each vertical plate 6, the tops and the bottoms of the movable plates 4 are respectively and fixedly provided with second telescopic rods 10, and the outsides of the two second telescopic rods 10 are respectively and fixedly provided with second springs 11, the two second telescopic rods 10 are respectively fixedly provided with a limiting block 12, one side of each limiting block 12 is respectively provided with a first inclined rod 13, one side of each first inclined rod 13 is respectively movably connected with one side of each limiting block 12 through a movable hinged support, the two first inclined rods 13 are respectively movably connected with the top and the bottom of the movable frame 5 through movable hinged supports, one side of the movable plate 4 is fixedly provided with a box body 14, one side of the movable frame 5 is fixedly provided with a U-shaped plate 15, the U-shaped plate 15 penetrates through one side of the box body 14 and extends into the box body 14, the top and the bottom of the box body 14 are respectively fixedly provided with a baffle 16, the box body 14 is internally provided with a pressing plate 17, the pressing plate 17 penetrates through the box body 14 and extends out of the box body 14, one side of the pressing plate 17 is fixedly provided with two third telescopic rods 18, and the outsides of the two third telescopic rods 18 are respectively fixedly provided with a third spring 19, one side of each of the two third telescopic rods 18 is fixedly connected with one side of each of the two baffles 16, two pushing blocks 20 are further arranged inside the shell 1, a cross rod 21 is fixedly arranged between the two pushing blocks 20, a movable plate 22 is fixedly arranged on one side of one of the pushing blocks 20, a push-pull plate 23 is fixedly arranged on one side of the other pushing block 20, and the push-pull plate 23 penetrates through one side of the shell 1 and extends out of the shell 1;

the clamping mechanism further comprises an auxiliary component, the auxiliary component comprises a push-pull block 24, and one side of the push-pull block 24 is fixedly connected with one side of a push-pull plate 23;

furthermore, a hole groove is arranged on the pressing plate 17, two L-shaped pushing blocks 25 are fixedly arranged on one side of the pressing plate 17, transverse grooves are respectively arranged on the inner sides of the two L-shaped pushing blocks 25, two first movable blocks are respectively arranged on the inner sides of the two L-shaped pushing blocks 25, first sliding blocks are respectively fixedly arranged on the two first movable blocks, the two first sliding blocks are respectively arranged in the two transverse grooves, and the first movable blocks have the functions of, after the L-shaped pusher block 25 is moved to a position where the second movable block is located between the L-shaped pusher block 25 and the first movable block, pressing the pressing plate 17 is performed again, and then the first movable block is also moved to the second movable block side, and then the pressing plate 17 is pulled outward, the first movable block can press the second movable block downwards, and at the moment, the bottom of the L-shaped pushing block 25 and the first movable block can simultaneously and sequentially move to the other side of the second movable block;

furthermore, fourth telescopic rods are respectively and fixedly arranged on the two baffle plates 16, fourth springs are respectively and fixedly arranged outside the two fourth telescopic rods, second movable blocks are respectively and fixedly arranged on the two fourth telescopic rods, and the second movable blocks can limit the first movable blocks;

furthermore, a first chute is formed in the top of the transverse plate 3, a first connecting plate is fixedly arranged at the bottom of the movable plate 4, a second slider is fixedly arranged at the bottom of the first connecting plate, the second slider is arranged in the first chute, a first long plate is further arranged in the transverse plate 3, the first long plate penetrates through the transverse plate 3 and extends out of the transverse plate 3, a second inclined rod is fixedly arranged at the top of the first long plate, the bottom of the second inclined rod is movably connected with the top of the long plate through a movable hinge base, the top of the second inclined rod is movably connected with the bottom of the movable plate 4 through a movable hinge base, and the first chute can limit the movable plate 4 to prevent the movable plate 4 from deviating;

furthermore, two second chutes are formed in the bottom of the inner cavity of the housing 1, third sliding blocks are fixedly arranged at the bottoms of the two pushing blocks 20, the two third sliding blocks are respectively and fixedly arranged inside the two second chutes, chutes are formed in the tops of the two pushing blocks 20, second long plates are further respectively arranged at the tops of the two pushing blocks 20, inclined blocks are respectively and fixedly arranged at the bottoms of the two second long plates, the two inclined blocks are respectively arranged inside the two chutes, the two second long plates penetrate through the transverse plate 3 and extend out of the transverse plate 3, clamping plates 26 are respectively and fixedly arranged at the tops of the two second long plates, the tops of the two clamping plates 26 are respectively contacted with the bottom of the PTC heater body 2, and the second chutes can limit the pushing blocks 20 to ensure that the pushing blocks 20 only move left and right;

further, a movable groove has still been seted up to 1 inner chamber bottom of casing, the fixed fourth slider that is equipped with in fly leaf 22 bottom, the fourth slider is located inside the movable groove, the fixed apron 27 that is equipped with in first long board bottom, apron 27 bottom is equipped with the external screw thread, fly leaf 22 top is equipped with the internal thread, the external screw thread meshes with the internal thread mutually, 1 front side of casing is equipped with sealing door 28, sealing door 28 passes through hinge connection with 1 front side of casing, meshes with the external screw thread mutually through the internal thread, can realize that apron 27 carries out the centre gripping spacing to fly leaf 22.

The utility model discloses a use as follows: when the utility model is used, when the PTC heater body 2 needs to be dismantled, firstly, the pressing plate 17 is pressed, the pressing plate 17 drives the third telescopic rod 18 to compress, the third telescopic rod 18 drives the third spring 19 to compress, simultaneously, the pressing plate 17 drives the L-shaped pushing block 25 to move, the L-shaped pushing block 25 pushes the second movable block downwards, the second movable block drives the fourth telescopic rod to compress, the fourth telescopic rod drives the fourth spring to compress, then the L-shaped pushing block 25 moves until the second movable block is positioned between the L-shaped pushing block 25 and the first movable block to limit, at the moment, the exposed U-shaped plate 15 is pulled outwards, the U-shaped plate 15 drives the movable frame 5 to move, the movable frame 5 drives the vertical plate 6 to move, the vertical plate 6 drives the first inclined rod 13 to move, the first inclined rod 13 pulls the two stoppers 12 inwards, the two stoppers 12 drive the second telescopic rod 10 to compress, the second telescopic rod 10 drives the second spring 11 to compress until the two limit blocks 12 move to the outer sides of the two L-shaped limit plates 7, the position is limited and unchanged, when the limit blocks 12 move, the second telescopic rod 10 is also driven to move to one side, the second telescopic rod 10 drives the movable plate 4 to move to one side, the movable plate 4 drives the second inclined rod to move, the second inclined rod drives the first long plate to move upwards, the first long plate drives the cover plate 27 to move upwards, the cover plate 27 moves, the internal thread and the external thread are not engaged, at this time, the cover plate 27 does not limit the movable plate 22 any more, the push-pull block 24 is pulled outwards, the push-pull block 24 drives the push-pull plate 23 to move, the push-pull plate 23 drives one of the push blocks 20 to move, one of the push blocks 20 drives the cross rod 21 to move, the cross rod 21 drives the other push block 20 to move, the two push blocks 20 move and simultaneously drive the two inclined blocks to move, the sloping block drives the second long plate to remove, and the second long plate drives splint 26 and removes, and splint 26 leaves PTC heater body 2 surface afterwards, no longer carries out the centre gripping to PTC heater body 2, opens sealing door 28 this moment, with PTC heater body 2 directly take out can, can know through above principle, when needs install PTC heater body 2, repeat above step and carry out reverse operation then can install PTC heater body 2 fixedly.

Embodiment 2, refer to fig. 4, the utility model provides a pair of PTC heating element convenient to change maintenance heating pipe, including pushing away pull ring 29, push away pull ring 29 one side and push-and-pull plate 23 one side fixed connection.

The utility model discloses a use as follows: when the utility model is used, when the PTC heater body 2 needs to be dismantled, the pressing plate 17 is firstly pressed, the pressing plate 17 drives the third telescopic rod 18 to compress, the third telescopic rod 18 drives the third spring 19 to compress, meanwhile, the pressing plate 17 drives the L-shaped pushing block 25 to move, the L-shaped pushing block 25 pushes the second movable block downwards, the second movable block drives the fourth telescopic rod to compress, the fourth telescopic rod drives the fourth spring to compress, then the L-shaped pushing block 25 moves until the second movable block is positioned between the L-shaped pushing block 25 and the first movable block to limit, at the moment, the exposed U-shaped plate 15 is pulled outwards, the U-shaped plate 15 drives the movable frame 5 to move, the movable frame 5 drives the vertical plate 6 to move, and the vertical plate 6 drives the first inclined rod 13 to move, in the using process, the pull ring 29 can be more easily held by a user and is not easy to fall off, and the operation is more convenient.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.

Claims

1. The utility model provides a PTC heater convenient to change maintenance heating pipe, includes casing (1), its characterized in that: the PTC heater body (2) is arranged in the shell (1), the clamping mechanism is arranged in the shell (1), and the clamping mechanism extends out of the shell (1);

the clamping mechanism comprises two clamping components, each clamping component comprises a transverse plate (3), the transverse plates (3) are fixedly arranged inside the shell (1), a movable plate (4) is arranged inside the shell (1), the movable plate (4) penetrates through one side of the shell (1) and extends out of the shell (1), a movable frame (5) is arranged outside the movable plate (4), the tops and the bottoms of the movable frames (5) are respectively and fixedly provided with a vertical plate (6), one side of the shell (1) is fixedly provided with two L-shaped limiting plates (7), one side of each of the two L-shaped limiting plates (7) is respectively and fixedly provided with a first telescopic rod (8), the outer parts of the two first telescopic rods (8) are respectively and fixedly provided with a first spring (9), one side of each of the two first telescopic rods (8) is respectively and fixedly connected with one side of the two vertical plates (6), the tops and the bottoms of the movable plates (4) are respectively and fixedly provided with a second telescopic rod (10), the outer parts of the two second telescopic rods (10) are respectively fixedly provided with a second spring (11), the two second telescopic rods (10) are respectively fixedly provided with a limiting block (12), one side of each limiting block (12) is respectively provided with a first inclined rod (13), one side of each first inclined rod (13) is respectively movably connected with one side of each limiting block (12) through a movable hinged support, the two first inclined rods (13) are respectively movably connected with the top and the bottom of the movable frame (5) through movable hinged supports, one side of the movable plate (4) is fixedly provided with a box body (14), one side of the movable frame (5) is fixedly provided with a U-shaped plate (15), the U-shaped plate (15) penetrates through one side of the box body (14) and extends into the box body (14), the top and the bottom of the box body (14) are respectively fixedly provided with a baffle plate (16), and the box body (14) is internally provided with a baffle plate (17), the pressing plate (17) penetrates through the box body (14) and extends out of the box body (14), two third telescopic rods (18) are fixedly arranged on one side of the pressing plate (17), third springs (19) are fixedly arranged outside the two third telescopic rods (18) respectively, one sides of the two third telescopic rods (18) are fixedly connected with one sides of two baffles (16) respectively, two pushing blocks (20) are further arranged inside the shell (1), a cross rod (21) is fixedly arranged between the two pushing blocks (20), a movable plate (22) is fixedly arranged on one side of one pushing block (20), a push-pull plate (23) is fixedly arranged on one side of the other pushing block (20), and the push-pull plate (23) penetrates through one side of the shell (1) and extends out of the shell (1);

the clamping mechanism further comprises an auxiliary component, the auxiliary component comprises a push-pull block (24), and one side of the push-pull block (24) is fixedly connected with one side of a push-pull plate (23).

2. A PTC heater facilitating replacement of a service heating pipe according to claim 1, wherein: according to seted up the hole groove on clamp plate (17), according to clamp plate (17) one side fixed be equipped with two L shapes and promote piece (25), two the L shape promotes piece (25) inboard and has seted up the transverse groove respectively, two the L shape promotes piece (25) inboard and is equipped with two first movable blocks respectively, two fixed first slider that is equipped with respectively on the first movable block, two inside two transverse grooves are located respectively to first slider.

3. A PTC heater facilitating replacement of a service heating pipe according to claim 1, wherein: and fourth telescopic rods are respectively fixedly arranged on the two baffles (16), a fourth spring is respectively fixedly arranged outside each fourth telescopic rod, and a second movable block is respectively fixedly arranged on each fourth telescopic rod.

4. A PTC heater facilitating replacement of a service heating pipe according to claim 1, wherein: first spout has been seted up at diaphragm (3) top, movable plate (4) bottom is fixed and is equipped with first connecting plate, the fixed second slider that is equipped with in first connecting plate bottom, inside first spout was located to the second slider, diaphragm (3) inside still is equipped with first long slab, first long slab runs through diaphragm (3) and extends diaphragm (3) outside, the fixed second down tube that is equipped with in first long slab top, second down tube bottom and long slab top are through activity hinge seat swing joint, second down tube top and movable plate (4) bottom are through activity hinge seat swing joint.

5. A PTC heater facilitating replacement of a service heating pipe according to claim 1, wherein: two second spouts, two have been seted up to casing (1) inner chamber bottom promote piece (20) bottom and fixedly be equipped with the third slider, two inside the third slider is fixed respectively to be located two second spouts, two promote piece (20) top and seted up the chute respectively, two promote piece (20) top and still be equipped with the second long slab respectively, two second long slab bottom is fixed respectively and is equipped with the sloping block, two inside two chutes, two were located respectively to the sloping block the second long slab all runs through diaphragm (3) and extends diaphragm (3) outside, two the second long slab top is fixed splint (26) that are equipped with respectively, two splint (26) top all contacts with PTC heater body (2) bottom.

6. A PTC heater for facilitating replacement and repair of a heating tube according to claim 4, wherein: the movable groove has still been seted up to casing (1) inner chamber bottom, the fixed fourth slider that is equipped with in fly leaf (22) bottom, the movable inslot portion is located to the fourth slider, the fixed apron (27) that are equipped with in first long slab bottom, apron (27) bottom is equipped with the external screw thread, fly leaf (22) top is equipped with the internal thread, the external screw thread meshes with the internal thread mutually, casing (1) front side is equipped with sealing door (28), hinge connection is passed through with casing (1) front side in sealing door (28).

7. A PTC heater facilitating replacement of a service heating pipe according to claim 1, wherein: the auxiliary component comprises a push-pull ring (29), and one side of the push-pull ring (29) is fixedly connected with one side of the push-pull plate (23).