CN2815672Y

CN2815672Y - Hot-air pipe for hot-air stitch sealing machine

Info

Publication number: CN2815672Y
Application number: CN 200520062422
Authority: CN
Inventors: 梁少明
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-04
Filing date: 2005-08-04
Publication date: 2006-09-13
Anticipated expiration: 2015-08-04

Abstract

The utility model relates to a hot air pipe for a sewing and sealing machine of hot air, which is high in heating efficiency and small in size. The utility model comprises a supporting post and an electric heating wire and is characterized in that the periphery of the electric heating wire wound on the outer surface of the supporting post is orderly fixed with an inner pipe, a middle pipe and an outer pipe from interior to exterior, the lower end of the outer pipe is provided with a lower cover, the upper end of the middle pipe is provided with an upper cover and an air inlet is reserved between the upper cover and the outer pipe. An outer passage is formed between the inner wall of the outer pipe and the outer wall of the middle pipe, a middle passage is formed between the inner wall of the middle pipe and the outer wall of the inner pipe and an inner passage is formed between the inner wall of the inner pipe and the outer surface of the supporting post. Heads and tails of the outer passage, the middle passage and the inner passage are connected to form a return airflow passage from the exterior to the interior.

Description

Hot blast sealing sealer warm-air pipe

Technical field

The utility model relates to a kind of warm-air pipe, particularly a kind of hot blast sealing sealer warm-air pipe.

Background technology

Existing hot blast sealing sealer has just installed the electrothermal tube of in-built electrical heated filament simply additional in hot air duct with warm-air pipe, absorb the heat of electrothermal tube when in cold wind is blown into pipeline, flowing through the electrothermal tube surface, existing this warm-air pipe structure, its efficiency of heating surface is low, and when wind speed is big, to use long electrothermal tube increasing its surface area, otherwise the hot blast temperature that flows out can not meet the demands, so, when wind speed was big, its volume was also bigger.

Summary of the invention

The purpose of this utility model is in order to solve existing hot blast sealing sealer with low, the bulky problem of the efficiency of heating surface that exists in the warm-air pipe, and a kind of efficiency of heating surface height, hot blast sealing sealer warm-air pipe that volume is little are provided.

Technical scheme:

The purpose of this utility model is achieved in that a kind of hot blast sealing sealer warm-air pipe, comprise pillar and heating wire, it is characterized in that being wrapped in an outer surface of column heating wire the periphery from the inside to the outside fixed order interior pipe is arranged, middle pipe, outer tube, the lower end of outer tube is provided with lower cover, the upper end of middle pipe is provided with loam cake, leave air inlet between loam cake and the outer tube, constitute outer tunnel between outer tube wall and the middle pipe outer wall, passage in constituting between middle inside pipe wall and the outer wall of inner tube, constitute internal channel, outer tunnel between an inner tube wall and the outer surface of column, middle passage, the end to end one-tenth of internal channel circuitous gas channel from outside to inside.After the energising, the electrothermal wire heating, the air inlet of compressed air between loam cake and outer tube enters outer tunnel, the gap between pipe and the lower cover or the side opening of middle pipe bottom tube wall enter middle tube passage in the warp again, the side opening of gap between interior pipe and loam cake or interior pipe top tube wall flows into internal channel again, after the following outlet ejection of internal channel, it is the compressed air described circuitous gas channel of flowing through, wherein each channel temperature order from high to low is: internal channel, middle passage, outer tunnel, compressed air is pipe outer wall preheating in the quilt when flowing through outer tunnel, in the inflow behind the passage again by the outer wall of inner tube preheating, heated again by heating wire after flowing into internal channel.

Described hot blast sealing sealer warm-air pipe, it is characterized in that described middle pipe upper end and loam cake sealing and fixing, in leave the gap that is communicated with outer tunnel and middle passage between pipe lower end and lower cover, loam cake central authorities are provided with through hole and interior external diameter of pipe is sealed and matched, in pipe top tube wall have the side opening of passage and internal channel in the connection, stretch out outside the lower cover interior pipe bottom, and pillar top is provided with and the friction tight fixedly head of inner tube diameter, and the binding post of heating wire stretches out outside the fixing head.

Described hot blast sealing sealer warm-air pipe is characterized in that described loam cake upside fixed order has socket, pipe cap, pullover.

Described hot blast sealing sealer warm-air pipe is characterized in that described interior pipe lower end is connected to tuyere.

Beneficial effect:

Owing to adopted technical scheme described in the utility model, before compressed air contacted with the heating wire surface and absorbs heat, earlier through twice preheating, and the temperature of outer tube outer wall was low, so heat loss is little, the efficiency of heating surface is high, it is simple in structure, volume is little.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the stereochemical structure decomposing schematic representation of hot blast sealing sealer described in the utility model with an embodiment of warm-air pipe.

Fig. 2 is the mounted inside enlarged drawing of Fig. 1 embodiment part.

Fig. 3 is the vertical view of Fig. 2.

Among the figure 1, pullover, 2, pipe cap, 3, socket, 7, fixing head, 5, the fixing head of temperature-sensitive, 62, spout, 6, tuyere, 61, nut, 46, joint, 43, interior pipe, 44, heating wire, 42, middle pipe, 41, outer tube; 71,72, binding post, 420, loam cake, 430, side opening, 460, lower cover, 45, pillar; 410, air inlet.

The specific embodiment:

See Fig. 1, described hot blast sealing sealer warm-air pipe is made up of pullover 1, pipe cap 2, socket 3 outer tubes 41, middle pipe 42, interior pipe 43, pillar 45 (see figure 2)s, tuyere 6 and heating wire 44.

Referring to Fig. 2, heating wire 44 is wrapped in the outer surface of pillar 45, pipe 42 during loam cake 420 stretches out downwards, middle pipe 42 lower ends and 460 of lower covers leave the gap, loam cake 420 central authorities are provided with through hole and interior pipe 43 external diameters are sealed and matched, in pipe top tube wall have the side opening 430 of passage and internal channel in the connection, lower cover 460 stretches out the joint 46 of tubulose downwards, interior pipe 43 bottoms are stretched in the joint 46, pillar 45 is fixed on fixing 7, fixing 7, loam cake 420 are fixing with interior pipe 43 with lower cover 460, and the binding post 71,72 of heating wire 44 stretches out outside fixing 7.

From Fig. 1, be also shown in, be connected with nut 61 between joint 46 and the tuyere 6, be fixed with fixing 5 of temperature-sensitive on the joint 46 and be used to place temperature sensing device; Loam cake 420 upsides are fixed with socket 3, pipe cap 2, pullover 1, and power line stretches into binding post with socket 3 and is connected through pullover 1, pipe cap 2, and the through hole of compressed air on pullover 1, pipe cap 2 and socket 3 flows into.

The circuitous gas channel that compressed air is flowed through is shown in the arrow among Fig. 2, after interior pipe 43 lower ends flow into joint 46 (Fig. 1) and tuyere 6, after spout 62 ejections on the tuyere 6.

Claims

1, a kind of hot blast sealing sealer warm-air pipe, comprise pillar and heating wire, it is characterized in that being wrapped in an outer surface of column heating wire the periphery from the inside to the outside fixed order interior pipe is arranged, middle pipe, outer tube, the lower end of outer tube is provided with lower cover, the upper end of middle pipe is provided with loam cake, leave air inlet between loam cake and the outer tube, constitute outer tunnel between outer tube wall and the middle pipe outer wall, passage in constituting between middle inside pipe wall and the outer wall of inner tube, constitute internal channel, outer tunnel between an inner tube wall and the outer surface of column, middle passage, the end to end one-tenth of internal channel circuitous gas channel from outside to inside.

2, according to the described hot blast sealing of claim 1 sealer warm-air pipe, it is characterized in that described middle pipe upper end and loam cake sealing and fixing, in leave the gap that is communicated with outer tunnel and middle passage between pipe lower end and lower cover, loam cake central authorities are provided with through hole and interior external diameter of pipe is sealed and matched, in pipe top tube wall have the side opening of passage and internal channel in the connection, stretch out outside the lower cover interior pipe bottom, and pillar top is provided with and the friction tight fixedly head of inner tube diameter, and the binding post of heating wire stretches out outside the fixing head.

3,, it is characterized in that described loam cake upside fixed order has socket, pipe cap, pullover according to the described hot blast sealing of claim 1 sealer warm-air pipe.

4,, it is characterized in that described interior pipe lower end is connected to tuyere according to the described hot blast sealing of claim 1 sealer warm-air pipe.