CN211175856U - Combined electric melting connecting pipe fitting - Google Patents

Combined electric melting connecting pipe fitting Download PDF

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Publication number
CN211175856U
CN211175856U CN201922320087.1U CN201922320087U CN211175856U CN 211175856 U CN211175856 U CN 211175856U CN 201922320087 U CN201922320087 U CN 201922320087U CN 211175856 U CN211175856 U CN 211175856U
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electric
connecting piece
electric heating
heating element
pipe fitting
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CN201922320087.1U
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Chinese (zh)
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魏明星
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Chengdu Inming Caesar Pipe Co ltd
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Chengdu Inming Caesar Pipe Co ltd
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Abstract

The utility model relates to a pipe connection technical field discloses a modular electric smelting connects pipe fitting, including being used for pipeline welded electric smelting connecting piece, electric smelting connecting piece both ends are built-in to have and are cylindric electric heating element, electric heating element can dismantle the combination Assembly with the electric smelting connecting piece. The utility model discloses can realize being convenient for to the processing and the batch production purpose of electric smelting connection pipe fitting, can dismantle the combination assembly through electric smelting connecting piece and the electric heating element adoption with in the electric smelting connection pipe fitting for electric heating connecting piece and electric heating element detachable make, then the equipment shaping, it adopts injection moulding process because of heating wire and electric heating connecting piece to have solved current electric smelting connection pipe fitting, it is high to lead to the product disability rate, demand operation level is high, productivity ratio is low, intensity of labour is big, be not convenient for actual processing and batch production's problem.

Description

Combined electric melting connecting pipe fitting
Technical Field
The utility model relates to a pipe connection technical field specifically indicates a modular electric smelting connects pipe fitting.
Background
The electric melting pipe fitting is an important connecting joint in plastic pipe connection, firm fusion welding of pipelines in the same direction is achieved, at present, most of electric melting sleeves in China are pure plastic injection-molded electric melting pipe fittings such as PE and PE-RT, the pure plastic electric melting pipe fittings and the pipes are connected through heating wires distributed on the inner walls of bell sockets of the pure plastic electric melting pipe fittings, the pipes and the pipes are heated and expanded, air between the outer walls of the pipes and the inner walls of the pipes is removed, then voltage supplied to the heating wires is increased to enable resin at interfaces to be thoroughly melted, and then polymer melting is generated at the connecting interfaces of the pipes and the pipes to be connected into permanent connection.
The existing electric melting connecting pipe fitting is processed by wrapping and molding an electric heating wire into an electric wire shape, then winding the electric heating wire on an injection mold core for injection molding according to requirements, and demoulding the electric heating wire after cooling to obtain a finished product or adopting an automatic post-wire laying process and equipment.
SUMMERY OF THE UTILITY MODEL
Based on above problem, the utility model provides a modular electric smelting connects pipe fitting. The utility model discloses can realize being convenient for to the processing and the batch production purpose of electric smelting connection pipe fitting, can dismantle the combination assembly through electric smelting connecting piece and the electric heating element adoption with in the electric smelting connection pipe fitting for electric heating connecting piece and electric heating element detachable make, then the equipment shaping, solved current electric smelting connection pipe fitting and adopted injection moulding technology because of heating wire and electric heating connecting piece, lead to the product disability rate high, demand operation level is high, productivity ratio is low, the actual processing of being not convenient for and batch production's problem.
For solving the above technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a modular electric smelting connecting pipe fitting, is including being used for pipeline welded electric smelting connecting piece, electric smelting connecting piece both ends are built-in to have and are cylindric electric heating element, electric heating element and electric smelting connecting piece can dismantle combination assembly.
In the utility model, the electric melting connecting piece can be injection molded by an injection molding machine, the material can adopt polyolefins such as PE, PPR and the like, the loading position of the electric heating element is reserved in the finished product electric melting connecting piece in the injection molding process by a specific mould or a machining method, the loading position corresponds to the position of the electric heating element, namely, the electric heating element is positioned at the two ends of the inner hole of the electric melting connecting piece, the electric heating element can be processed by other processing equipment, the selection of the processing equipment can be determined according to the specific structure of the electric heating element, the specific structure of the electric heating element in the utility model is not limited, the electric heating wire structure or the mesh structure in the prior art can be adopted, as long as the heat can be generated under the action of external equipment to melt the electric heating connecting piece and the surface plastic of the connected pipe material and then crystallize, and the arrangement mode of, the processing difficulty of the electric melting connecting pipe fitting is greatly reduced, the electric melting connecting piece and the electric heating elements can be separately produced in batch, and then the corresponding electric heating elements are arranged in the electric melting connecting piece.
The utility model discloses can realize being convenient for to the processing and the batch production purpose of electric smelting connection pipe fitting, can dismantle the combination assembly through electric smelting connecting piece and the electric heating element adoption with in the electric smelting connection pipe fitting for electric heating connecting piece and electric heating element detachable make, then the equipment shaping, solved current electric smelting connection pipe fitting and adopted injection moulding technology because of heating wire and electric heating connecting piece, lead to the product disability rate high, demand operation level is high, productivity ratio is low, the actual processing of being not convenient for and batch production's problem.
As a preferable mode, the inner hole of the electric melting connecting piece is provided with a retaining ring, and the two electric heating elements are respectively positioned at two ends of the retaining ring.
As a preferred mode, the two ends of the electric melting connecting piece are provided with annular grooves, the two ends, away from each other, of the annular grooves are communicated with the end face of the electric melting connecting piece, and the electric heating elements and the annular grooves are detachably assembled.
As a preferred mode, the electric heating elements and the annular grooves are in transition fit, interference fit or clearance fit, and the opposite end faces of the two electric heating elements are in interference connection with the inner walls of the adjacent annular grooves.
Preferably, the electric heating element is formed by a heating element made of magnetic conductive material and having a mesh structure and enclosing a cylinder shape.
Preferably, the mesh of the mesh structure of the electric heating element is circular, square or other polygonal shape.
In a preferred mode, the heating member is covered with a plastic layer.
As a preferred mode, the electric heating element is composed of a threaded resistance wire, one end of the resistance wire is longitudinally and electrically connected with a copper electrode, electrode grooves are formed in two ends of the electric melting connecting piece, and the copper electrode is located in the electrode grooves.
As a preferred mode, the resistance wire is coated with a plastic layer.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses can realize being convenient for to the processing and the batch production purpose of electric smelting connection pipe fitting, can dismantle the combination assembly through electric smelting connecting piece and the electric heating element adoption with in the electric smelting connection pipe fitting for electric heating connecting piece and electric heating element detachable make, then the equipment shaping, solved current electric smelting connection pipe fitting and adopted injection moulding technology because of heating wire and electric heating connecting piece, lead to the product disability rate high, demand operation level is high, productivity ratio is low, the actual processing of being not convenient for and batch production's problem.
(2) The utility model discloses be provided with the retaining ring in well electric smelting connecting piece hole, two electric heating element is located the retaining ring both ends respectively, the internal diameter of retaining ring is less than the internal diameter of electric smelting connecting piece, it is portable to contradict with the terminal surface of retaining ring when packing into electric smelting connecting piece pipe fitting to be taken over the material, it is located the limiting position by taking over the material this moment, the hookup location of taking over the material promptly, be convenient for judge the butt joint position of being taken over tubular product in the butt joint process, the retaining ring position can set up the middle part in electric smelting connecting piece hole, make two the length that is taken over the material extension income electric smelting connecting piece the same.
(3) The utility model discloses well electric smelting connecting piece both ends all are provided with the annular groove, two the one end that the annular groove deviates from mutually communicates with electric smelting connecting piece terminal surface, electric heating element can dismantle the combination fitting with the annular groove, and electric heating element packs into from the one end of annular groove with electric capacity connecting piece terminal surface intercommunication, because the other end of annular groove has the border, and this border can inject electric heating element in the position of use, and electric heating element's length can be less than or equal to the length of annular groove, is convenient for to the butt joint of tubular product.
(4) The utility model discloses well electric heating element adopts transition fit, interference fit or clearance fit with the annular groove, and the terminal surface that two electric heating element are relative all contradicts with adjacent annular groove inner wall and is connected, and electric heating element's thickness should set up lessly to adopt the metal to make, make it have certain deformability, because electric heating element adopts transition fit, interference fit or clearance fit with the annular groove, the follow-up welding to tubular product of being convenient for.
(5) The utility model discloses well electric heating element encloses into cylindric constitution by the heating element that has mesh structure that magnetic material made, the heating element in traditional electric smelting connecting pipe fitting all adopts the resistance wire to constitute, need produce the heat through electrode pair resistance wire circular telegram when using, then melt the butt joint of recrystallization realization tubular product to the plastics, then adjacent resistance wire distance is nearer in constituting cylindric resistance wire, easily lead to the short circuit in the process of heating, lead to welding failure even the pipe fitting is scrapped, and adopt magnetic material to make electric smelting connecting pipe fitting can remove the electrode portion, when the tubular product is packed into the electric smelting connecting piece that has electric heating element, can weld through the high frequency electromagnetic induction welding machine, namely the weld part cover of high frequency electromagnetic induction welding machine is established outside the electric smelting connecting piece and can carry out magnetic induction heating to electric heating element, then realize melting the recrystallization to, the risk that the resistance wire adopted originally can produce the short circuit has been eliminated, convenient to use reduces the disability rate.
(6) The utility model discloses well electric heating element comprises the resistance wire of threading form, the vertical electric connection of one end of resistance wire has the copper electrode, electric smelting connecting piece both ends are provided with the electrode tank, the copper electrode is located the electrode tank, can form electric smelting connecting pipe fitting through the electric smelting connecting piece both ends of packing into the resistance wire with the threading form, then can make the resistance wire generate heat the welding that realizes tubular product to the copper electrode circular telegram of motor inslot again.
Drawings
Fig. 1 is a schematic view of a cross-sectional structure of an embodiment of the straight tubular electrofusion connector of the present invention.
Fig. 2 is a schematic cross-sectional view of an embodiment of the middle electric heating element of the present invention.
Fig. 3 is a schematic structural view of another embodiment of the present invention, which uses a straight tubular electrofusion connector.
Fig. 4 is a structural diagram of the electric melting connector adopting a three-way pipe shape in the utility model.
Fig. 5 is a structural view of the electric melting connector of the present invention in a bent tube shape.
The electric heating device comprises an electric melting connecting piece 1, an annular groove 2, a retainer ring 3, an electric heating element 4, a heating piece 41, a plastic layer 42, a resistance wire 43, a copper electrode 44 and an electrode groove 5.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.
Example 1:
referring to fig. 1-5, a modular electric smelting connecting pipe fitting, is including being used for pipeline welded electric smelting connecting piece 1, electric smelting connecting piece 1 both ends are built-in to have and are cylindric electric heating element 4, electric heating element 4 and electric smelting connecting piece 1 can dismantle the combination assembly.
In this embodiment, the electrofusion connector 1 may be injection molded by an injection molding machine, and may have a straight tubular structure as shown in fig. 1, a three-way tubular structure as shown in fig. 4, an elbow tubular structure as shown in fig. 5, or even other special-shaped tubular structures, as long as the open end thereof is cylindrical, the material may be polyolefins such as PE, PPR, etc., the loading position of the electric heating element 4 is reserved in the finished electrofusion connector 1 by a specific mold or a machining method during the injection molding process, the loading position should correspond to the position of the electric heating element 4, i.e., at both ends of the inner hole of the electrofusion connector 1, the electric heating element 4 may be processed by other processing equipment, the selection of the processing equipment may be determined according to the specific structure of the electric heating element 4, the specific structure of the electric heating element 4 in the present invention is not limited, but may also be a heating wire structure or a, as long as can produce the heat under external equipment's the effect and make electric heat connecting piece and by take over the recrystallization after the material surface plastics melts can, owing to adopt electric heating element 4 and the setting mode that electric smelting connecting piece 1 can dismantle the combination fitting, reduced the processing degree of difficulty of electric smelting connecting pipe fitting by a wide margin for electric smelting connecting piece 1 and electric heating element 4 detachable carry out batch production, then with corresponding electric heating element 4 pack into electric smelting connecting piece 1 can.
The utility model discloses can realize being convenient for to the processing and the batch production purpose of electric smelting connection pipe fitting, can dismantle the combination assembly through electric smelting connecting piece and the electric heating element adoption with in the electric smelting connection pipe fitting for electric heating connecting piece and electric heating element detachable make, then the equipment shaping, solved current electric smelting connection pipe fitting and adopted injection moulding technology because of heating wire and electric heating connecting piece, lead to the product disability rate high, demand operation level is high, productivity ratio is low, the actual processing of being not convenient for and batch production's problem.
Example 2:
referring to fig. 1-3, a modular electric smelting connecting pipe fitting, is including being used for pipeline welded electric smelting connecting piece 1, electric smelting connecting piece 1 both ends are built-in to have and are cylindric electric heating element 4, electric heating element 4 and electric smelting connecting piece 1 can dismantle the combination assembly.
A retainer ring 3 is arranged in an inner hole of the electric melting connector 1, and the two electric heating elements 4 are respectively positioned at two ends of the retainer ring 3.
In this embodiment, the internal diameter of retaining ring 3 is less than the internal diameter of electrofusion connecting piece 1, by connect tubular product can move to conflict with the terminal surface of retaining ring 3 when packing into 1 pipe fitting of electrofusion connecting piece, be located the limited position by the material of taking over this moment, by the hookup location of taking over the material promptly, be convenient for judge the butt joint position of being connected the tubular product at the butt joint in-process, 3 positions of retaining ring can set up the middle part in 1 hole of electrofusion connecting piece, make two length that are taken over the material extension into the electrofusion connecting pipe fitting the same, improve joint strength.
As a preferred mode, 1 both ends of electric smelting connecting piece all are provided with annular groove 2, two the one end that annular groove 2 deviates from mutually communicates with 1 terminal surface of electric smelting connecting piece, electric heating element 4 and annular groove 2 demountable assembly. In the mode, the electric heating element 4 is installed from one end of the annular groove 2 communicated with the end face of the capacitance connecting piece, the other end of the annular groove 2 is provided with a boundary, the electric heating element 4 can be limited at a use position by the boundary, and the length of the electric heating element 4 can be smaller than or equal to that of the annular groove 2, so that the welding of the pipe is facilitated.
As a preferred mode, the electric heating elements 4 and the annular grooves 2 are in transition fit, interference fit or clearance fit, and the opposite end faces of the two electric heating elements 4 are in interference connection with the inner walls of the adjacent annular grooves 2. In the mode, the thickness of the electric heating element 4 is set to be small and can be set to be 2-4 mm, and the electric heating element is made of metal, so that the electric heating element has certain deformation capacity, and the electric heating element 4 and the annular groove 2 are in transition fit, interference fit or clearance fit, so that the subsequent welding of the pipe is facilitated.
In a preferred mode, the electric heating element 4 is formed by a mesh-structured heating member 41 made of a magnetic conductive material and enclosing a cylindrical shape. In the mode, heating elements in the traditional electric melting connecting pipe fitting are all formed by adopting the resistance wires 43, when in use, the resistance wires 43 are required to be electrified by the electrodes to generate heat, then plastic melting recrystallization is realized to realize butt joint of pipes, then the adjacent resistance wires 43 in the cylindrical resistance wires 43 are relatively close, short circuit is easily caused in the heating process, welding failure is caused, even the pipes are scrapped, the electric electrode part can be removed from the electric melting connecting pipe fitting by adopting a magnetic conduction material, when the pipes are arranged in the electric melting connecting part 1 with the electric heating elements 4, welding can be carried out by a high-frequency electromagnetic induction welding machine, namely, the welding part of the high-frequency electromagnetic induction welding machine is sleeved outside the electric melting connecting part 1 to carry out magnetic induction heating on the electric heating elements 4, then plastic melting recrystallization is realized, the risk that the electric resistance wires 43, the rejection rate is reduced, and fig. 2 is a sectional structural view of the electric heating element 4 in this mode.
Preferably, the mesh of the mesh structure of the electric heating element 4 is circular, square or other polygonal shape.
In a preferred embodiment, the heating element 41 is covered with a plastic layer 42, and fig. 1 shows a structure diagram of the electric heating element in this embodiment.
The other parts of this embodiment are the same as embodiment 1, and are not described herein again.
Example 3:
referring to fig. 1-3, a modular electric smelting connecting pipe fitting, is including being used for pipeline welded electric smelting connecting piece 1, electric smelting connecting piece 1 both ends are built-in to have and are cylindric electric heating element 4, electric heating element 4 and electric smelting connecting piece 1 can dismantle the combination assembly.
The electric heating element 4 is composed of a threaded resistance wire 43, one end of the resistance wire 43 is longitudinally and electrically connected with a copper electrode 44, electrode grooves 5 are arranged at two ends of the electric melting connecting piece 1, and the copper electrode 44 is positioned in the electrode grooves 5.
In this embodiment, the electric melting connecting pipe fitting can be formed by loading the threaded resistance wire 43 into both ends of the electric melting connecting piece 1, and then the resistance wire 43 can be heated by electrifying the copper electrode 44 in the motor groove to realize the welding of the pipe.
In a preferred embodiment, the resistance wire 43 is covered with a plastic layer 42, and fig. 3 shows a structure diagram of the electric heating element 4 in this embodiment.
The other parts of this embodiment are the same as embodiment 1, and are not described herein again.
The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the patent protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and the drawings of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a modular electric smelting connecting pipe fitting, is including being used for pipeline welded electric smelting connecting piece (1), its characterized in that: the opening end of the electric melting connecting piece (1) is internally provided with a cylindrical electric heating element (4), and the electric heating element (4) and the electric melting connecting piece (1) are detachably assembled.
2. A combined electrofusion connection pipe fitting as claimed in claim 1, characterised in that: a check ring (3) is arranged in an inner hole of the electric melting connecting piece (1), and the two electric heating elements (4) are respectively positioned at two ends of the check ring (3).
3. A combined electrofusion connection pipe fitting as claimed in claim 2, characterised in that: annular grooves (2) are formed in two ends of the electric melting connecting piece (1), two ends, deviating from each other, of the annular grooves (2) are communicated with the end face of the electric melting connecting piece (1), and the electric heating elements (4) are detachably assembled with the annular grooves (2).
4. A combined electrofusion connection pipe fitting as claimed in claim 3, characterised in that: the electric heating elements (4) and the annular grooves (2) are in transition fit, interference fit or clearance fit, and the opposite end faces of the two electric heating elements (4) are in abutting connection with the inner walls of the adjacent annular grooves (2).
5. A combined electrofusion connection pipe fitting as claimed in any of claims 1 to 4, characterised in that: the electric heating element (4) is formed by a heating element (41) which is made of magnetic materials and has a mesh structure and is enclosed into a cylinder.
6. A combined electrofusion connection pipe fitting as claimed in claim 5, characterised in that: the mesh of the mesh structure of the electric heating element (4) is round, square or other polygons.
7. A combined electrofusion connection pipe fitting as claimed in claim 6, characterised in that: the heating element (41) is coated with a plastic layer (42).
8. A combined electrofusion connection pipe fitting as claimed in any of claims 1 to 4, characterised in that: the electric heating element (4) is composed of a threaded resistance wire (43), one end of the resistance wire (43) is longitudinally and electrically connected with a copper electrode (44), electrode grooves (5) are formed in two ends of the electric melting connecting piece (1), and the copper electrode (44) is located in the electrode grooves (5).
9. A combined electrofusion connection pipe fitting as claimed in claim 8, characterised in that: the resistance wire (43) is coated with a plastic layer (42).
CN201922320087.1U 2019-12-20 2019-12-20 Combined electric melting connecting pipe fitting Active CN211175856U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922320087.1U CN211175856U (en) 2019-12-20 2019-12-20 Combined electric melting connecting pipe fitting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922320087.1U CN211175856U (en) 2019-12-20 2019-12-20 Combined electric melting connecting pipe fitting

Publications (1)

Publication Number Publication Date
CN211175856U true CN211175856U (en) 2020-08-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922320087.1U Active CN211175856U (en) 2019-12-20 2019-12-20 Combined electric melting connecting pipe fitting

Country Status (1)

Country Link
CN (1) CN211175856U (en)

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