CN2400268Y

CN2400268Y - Electric hot-melt plastic pipe joint

Info

Publication number: CN2400268Y
Application number: CN 99251791
Authority: CN
Inventors: 甘国工
Original assignee: DONGTAI (CHENGDU) INDUSTRY Co Ltd
Current assignee: DONGTAI (CHENGDU) INDUSTRY Co Ltd
Priority date: 1999-12-22
Filing date: 1999-12-22
Publication date: 2000-10-11
Anticipated expiration: 2009-12-22

Abstract

The utility model provides an electric hot-melt plastic pipe joint, which comprises a pipe joint body and a resistance wire heater which is arranged on the surface of the inner chamber of the pipe joint body. The electric hot-melt plastic pipe joint is characterized in that the end part of the pipe joint body is fixedly provided with an anode binding post and a cathode binding post, and the anode binding post and the cathode binding post are led out in an axial or radial mode and connected with a resistance wire of the resistance wire heater and are vertical or parallel with an axial line of the pipe joint body. The electric hot-melt plastic pipe joint has good sealing effect and long service life.

Description

Electric heating melts joint for plastic tube

The utility model relates to the molten joint for plastic tube of a kind of improved electric heating.

Positive and negative electrode binding post in the existing electric heating fusion tube joint is placed in the middle part of union body, easily causes binding post burn into seepage, influences service life.

In view of above reason, the purpose of this utility model is in order to overcome above deficiency, to provide a kind of sealing effectiveness good, and the electric heating of long service life melts joint for plastic tube.

The purpose of this utility model is achieved like this:

The molten joint for plastic tube of the utility model electric heating comprises union body, be loaded on the resistance heater of union body surface of internal cavity, it is characterized in that the union body end is fixed with the positive and negative electrode binding post, the positive and negative electrode binding post with axial or radial manner draw with resistance heater in resistance wire connect and with union body axis normal or parallel (referring to Fig. 1～Figure 13).

The positive and negative electrode binding post of above-mentioned resistance heater is fixed on the same end of union body and draws with resistance wire with axial or radial manner and be connected (referring to Fig. 1～Fig. 4).

The positive and negative electrode binding post of above-mentioned resistance heater is separately fixed at the union body two ends and draws with axial or radial manner and be connected (referring to Fig. 6) with resistance wire.

Above-mentioned union body interface has conical cavity, resistance wire such as hot device are loaded on the inner chamber conical surface (referring to Fig. 7～Fig. 8), during use, because pipe joint interface inner chamber is tapered, pipe fitting and joint fit tightly, so hot melt is even, and in reflow process, pipe fitting and pipe joint can axially be passed further elimination fit clearance mutually.

Above-mentioned union body inner chamber is that cylindrical cavity is (referring to Fig. 1～Fig. 6).

There is bell and spigot (referring to Fig. 8,9) at above-mentioned union body connection port place, and coincideing with internal diameter of the pipeline reduces resistance, helps the conveying of powdery, particle media.

The reinforcement convex tendon (referring to Fig. 5) of ring-type and/or arcuation is arranged on the above-mentioned union body periphery, gain in strength.

Above-mentioned reinforcement convex tendon cross sectional shape is rectangle or triangle or circular arc (referring to Fig. 5).

Have at least one connection domatic on the above-mentioned union body periphery, its end face has the groove (referring to Fig. 9) that seal is installed.

All-in-one-piece adpting flange (referring to Figure 12) is with it arranged on the above-mentioned union body, easy to connect.

There is metal insert (referring to Figure 13) to increase adpting flange intensity in the above-mentioned adpting flange.

The utility model is fixed on the interface termination of union body with the positive and negative electrode binding post, is difficult for being corroded, so sealing has reliably increased the service life of whole pipe joint.

Good, the long service life of the utility model sealing effectiveness.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1 is the straight shape pipe joint structure of a utility model schematic diagram 1.

Fig. 2 is the straight shape pipe joint structure of a utility model schematic diagram 2.

Fig. 3 is the straight shape pipe joint structure of a utility model schematic diagram 3.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 strengthens the utility model straight connector structural representation of convex tendon for band.

Fig. 6 is the utility model schematic diagram that contains single resistive heater.

Fig. 7 is the utility model straight connector structural representation that contains conical cavity.

Fig. 8 is the utility model straight connector structural representation that contains conical cavity and bell and spigot.

Fig. 9 is the utility model structural representation that contains the gradient.

Figure 10 is 90 ° of swan neck joint designs of the utility model schematic diagram.

Figure 11 is the utility model tee pipe coupling structural representation.

Figure 12 is the utility model 19 structural representations that contain adpting flange.

Figure 13 is the utility model structural representation of the adpting flange of containing insert.

Embodiment 1:

Fig. 1 has provided the utility model embodiment 1 figure.Referring to Fig. 1, on two end surfaces of the cylindrical cavity 2 that directly moulds material union body 1, ressitance spiral heater 3,4 is housed respectively.Being separately fixed at positive and negative electrode binding

post

5,6,7, the 8 union body two ends and the union body axis normal passes union body and draws with resistance wire in the resistance heater 3,4 with radial manner and be connected.

Embodiment 2:

Fig. 2 has provided embodiment 2 figure of the present utility model.Referring to Fig. 2, on two end surfaces of the cylindrical cavity 10 that directly moulds material union body 9, ressitance spiral heater 11,12 is housed respectively.The positive and negative

electrode binding post

13,14,15,16 parallel with the union body axis that is separately fixed at the union body two ends passes union body and draws with resistance wire in the resistance heater 11,12 with axial manner and be connected.

Embodiment 3:

Fig. 3, Fig. 4 have provided embodiment of the present utility model and have drawn figure.Present embodiment 3 is basic same with embodiment 1, and not existing together is that drawing with resistance wire in the resistance heater with perpendicular or parallel positive and

negative electrode wiring

18,19,20,21 radial manner of union body of being separately fixed at union body 17 two ends is connected.Positive and negative

electrode binding post

18,19 or 20,21 is respectively in the same side of union body.

Embodiment 4:

Fig. 5 has provided embodiment 4 figure of the present utility model.Present embodiment 4 basic with embodiment 1 with, not existing together is that ring-type reinforcement convex tendon 23 is arranged on the union body 22.

Embodiment 5:

Fig. 6 has provided embodiment 5 figure of the present utility model.Referring to Fig. 6, on the cylindrical cavity surface of directly moulding material union body 24, resistance heater 25 is housed.With the positive and negative electrode wiring 26,27 of union body axis normal respectively solid draw with radial manner with resistance wire in the resistance heater in the two ends of union body and be connected.

Embodiment 6:

Fig. 7 has provided embodiment 6 figure of the present utility model.Referring to Fig. 7, resistance heater 31,32 is housed on two ends interface conical cavity 29,30 surfaces of directly moulding material union body 28.Be separately fixed at the union body two ends and draw with resistance wire in the resistance heater 31,30 with radial manner with the positive and negative electrode binding post 33,34,35,36 of union body axis normal and to be connected.

Embodiment 7:

Fig. 8 has provided embodiment 7 figure of the present utility model.Referring to Fig. 8, bell and

spigot

40,41 is arranged respectively at the two ends interface

conical cavity

38,39 that directly moulds material union body 37.

Resistance heater

42,43 is contained in respectively on

conical cavity

38,39 surfaces.Being separately fixed at the same side of two ends periphery of union body or both sides with the positive and negative

electrode binding post

44,45,46,47 of pipe joint axis normal draws with resistance wire in the

resistance heater

42,43 with radial manner and is connected.

Embodiment 8:

Fig. 9 has provided embodiment 8 figure of the present utility model.See Fig. 9, there is bell and spigot 50 at 49 places at joint for plastic tube body 48 cylindrical cavities.Resistance heater 51 is positioned on inner chamber 49 surfaces.Be fixed on the same periphery wall of the same termination of union body to draw with resistance wire in the resistance heater 51 with the positive and negative electrode wiring 52,53 of union body axis normal and be connected with radial manner.Have one to connect domaticly 54 on the union body other end periphery, its end face has the groove 55 that seal is installed.

Embodiment 9:

Figure 10 has provided the utility model embodiment 9 figure.Referring to Figure 10, at the two ends of 90 ° of union elbow bodies 56

cylindrical cavity

57,58 is arranged respectively, resistance heater 59,60 is housed respectively in it.Respectively with the vertical positive and negative

electrode binding post

61,62,63,64 of union elbow body axis be arranged in the two ends of union elbow body and positive and negative electrode wiring respectively symmetry be fixed on union body periphery both sides or be fixed on periphery the same side, union body termination and draw with the resistance wire of resistance heater 59,60 and be connected with radial manner.

Embodiment 10:

Figure 11 has provided the utility model embodiment 10 together, referring to Figure 11, in the conical cavity 66,67,68 of three interfaces of threeway joint for plastic tube body 65 resistance heater 69,70,71 is housed.Being fixed on union body three interface terminations with the positive and negative electrode binding post 72,73,74,75,76,77 of union body three axis normal respectively locates to draw with resistance heater 69,70,71 with radial manner respectively to be connected.

Embodiment 11:

It is same that Figure 12 has provided the utility model embodiment 11, and present embodiment is basic and embodiment 8 is same.Not existing together is not have the gradient of connection on the union body, but all-in-one-piece adpting flange 78 is with it arranged, and the groove 29 that seal is installed is arranged on the adpting flange end face.

Embodiment 12;

Figure 13 has provided the utility model embodiment 12 figure.Present embodiment 12 basic with embodiment 11 with, not existing together is that metal insert 80 is arranged in the flange, end face of flange has the grooves 81 of two installation seals.

Claims

1, the molten joint for plastic tube of electric heating, comprise union body, be loaded on the resistance heater of union body surface of internal cavity, it is characterized in that the union body end is fixed with the positive and negative electrode binding post, the positive and negative electrode binding post with axial or radial manner draw with resistance heater in resistance wire connect and with union body axis normal or parallel.

2, the molten joint for plastic tube of electric heating according to claim 1, the positive and negative electrode binding post that it is characterized in that resistance heater are fixed on the same end of union body and draw with resistance wire with axial or radial manner and be connected.

3, the molten joint for plastic tube of electric heating according to claim 1, the positive and negative electrode binding post that it is characterized in that resistance heater are separately fixed at the union body two ends and draw with resistance wire with axial or radial manner and be connected.

4, according to claim 1 or the molten joint for plastic tube of 2 or 3 described electric heating, it is characterized in that the union body interface has conical cavity, resistance heater is loaded on the inner chamber conical surface.

5, according to claim 1 or the molten joint for plastic tube of 2 or 3 described electric heating, it is characterized in that the union body inner chamber is a cylindrical cavity.

6, according to claim 1 or the molten joint for plastic tube of 2 or 3 described electric heating, it is characterized in that the union body interface has bell and spigot.

7, according to the molten joint for plastic tube of claim 1 or 2 or 3 described electric heating, it is characterized in that having on the union body periphery ring-type and/or arcuation as strong convex tendon.

8, the molten joint for plastic tube of electric heating according to claim 7, it is characterized in that strengthening the convex tendon cross sectional shape is rectangle or triangle or circular arc.

9, according to claim 1 or the molten joint for plastic tube of 2 or 3 described electric heating, it is characterized in that having on the union body periphery at least one connection domatic, its end face has the groove that seal is installed.

10, according to claim 1 or the molten joint for plastic tube of 2 or 3 described electric heating, it is characterized in that having on the union body all-in-one-piece adpting flange with it.

11, the molten joint for plastic tube of electric heating according to claim 10 is characterized in that metal insert is arranged in the adpting flange.