CN207936501U - A kind of inner-tube structure of electric heater - Google Patents

Abstract

The utility model discloses a kind of inner-tube structure of electric heater, including barrel, end cap, the open end of barrel is outward extended with flange, the middle part of flange is bent to form a bending part to close to barrel side, one ring bodies part has fully embedded into the flange, the space surrounded between bending part and barrel outer wall, end cap covers the opening in barrel, end cap, flange and ring bodies are correspondingly provided with multipair through-hole, each pair of through-hole connects bolt there are one wearing, be screwed on a nut on each connection bolt, multiple connection bolts and multiple nuts are end cap, flange and ring bodies are locked together；It is equipped between gasket or end cap and the inner wall of barrel between end cap and the flange and sealing ring is housed.When the ring bodies is partially submerged into the space surrounded between the flange, bending part and barrel outer wall, the outer wall of ring bodies is ladder circle cylindricality.The utility model make and it is easy to assembly, maintainability is good, can preferably prevent liner deform and there is leak.

Description

A kind of inner-tube structure of electric heater

Technical field

The utility model is related to electric heater manufacturing technology field, especially a kind of inner-tube structure of electric heater.

Background technology

Traditional inner container of electric water heater is welded by ladle body and end cap, but due to by welding production, holding in weld Easily there is welding stress, be easy to crack and leak in weld during water heater use, weld is also easy rotten It loses and damages, therefore service life is relatively low, simultaneously because the presence of solder, also easily infiltrates into water, reduce effluent characteristics.Cause This people starts to design the water heater liner without welding, and a Patent No. was disclosed if 01 day February in 2017 The Chinese invention patent of ZL201310113946.4, entitled " a kind of welding water heater liner " comprising liner ladle body, institute State liner ladle body both ends and be connected with liner end cap, be provided on liner ladle body or liner end cap for water heater liner into and out of Water or the water pipe of inlet, outlet, the liner end cap be one away from liner ladle body direction evagination semiellipse lid, liner End cap is connected to become an entirety with liner ladle body in such a way that cigarette is connect, and the liner end cap is at it close to cigarette position Place is provided with an annular U-type groove, and no-welding-seam sealing device is provided between the water pipe and liner ladle body or liner end cap, this Kind welding water heater liner can improve the bearing capacity of water heater liner, avoid previous water heater liner because with weldering Seam and there is the defect of leak, deformation in container.But this inner-tube structure is connected by cigarette with liner ladle body by liner end cap The mode connect is connected to become an entirety, prepares that difficulty is larger, and the assembly difficulty of other parts is also larger, maintainability compared with Difference.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of inner-tube structure of electric heater, making and assembly side Just, maintainability is good, can preferably prevent liner deformation from leak occur.

In order to achieve the above objectives, the technical solution of the utility model is：A kind of inner-tube structure of electric heater, including tubbiness The open end of body, end cap, barrel is outward extended with flange, and the middle part of flange is bent to form a bending to close to barrel side Portion, a ring bodies part or has fully embedded into the space surrounded between the flange, bending part and barrel outer wall, and end cap is covered in bucket The opening of shape body, end cap, flange and ring bodies are correspondingly provided with multipair through-hole, and each pair of through-hole is worn there are one bolt is connected, each Be screwed on a nut on connection bolt, and multiple connection bolts and multiple nuts are locked together end cap, flange and ring bodies；End It is equipped between gasket or end cap and the inner wall of barrel between lid and the flange and sealing ring is housed.

Further, when the ring bodies is partially submerged into the space surrounded between the flange, bending part and barrel outer wall, The outer wall of the ring bodies is ladder circle cylindricality.So that ring bodies outer wall more preferably it is chimeric with bending part positioning.

It is preferred that the barrel is made of stainless steel or aluminium alloy, the end cap is stainless steel or aluminium alloy or plastic cement system At the ring bodies is made of aluminium alloy or plastic cement.

Further, water inlet pipe and outlet pipe are equipped on the end cap.

Further, the water outlet of the water inlet pipe is close to the interior bottom of barrel；Water outlet pipe part is in the part in barrel Bending is formed, the water inlet of outlet pipe is arranged at proximal cover.

Further, the middle part of the water inlet pipe is equipped with shoulder, and shoulder leans against on end cap, passes through end cap by screw and locks Shoulder on water inlet pipe is fixed together water inlet pipe and end cap.It is fixed conducive to the installation of water inlet pipe.

Further, sealing ring is housed between the shoulder and end cap on the water inlet pipe.

Further, the middle part of the outlet pipe is equipped with shoulder, and shoulder leans against on end cap, passes through end cap by screw and locks Shoulder on outlet pipe is fixed together outlet pipe and end cap.

Further, sealing ring is housed between the shoulder and end cap on the outlet pipe.

Further, the water inlet pipe and outlet pipe are made of plastic cement, and water inlet pipe and water outlet pipe part are solid in external part It is connected with metal connector sleeve, the end of metal connector sleeve is equipped with connection external screw thread.Water inlet pipe and water outlet pipe part in this way is in barrel It is state of insulation, can preferably plays leakproof electro ultrafiltration.

The utility model is since the open end of barrel is outward extended with flange, and the middle part of flange is to close to barrel side It is bent to form a bending part, what a ring bodies part or have fully embedded into surrounded between the flange, bending part and barrel outer wall Space, end cap cover the opening in barrel, and end cap, flange and ring bodies are correspondingly provided with multipair through-hole, and each pair of through-hole is installed with one A connection bolt, each to connect the nut that is screwed on bolt, multiple connection bolts and multiple nuts are end cap, flange and ring-type Body is locked together；It is equipped between gasket or end cap and the inner wall of barrel between end cap and the flange and sealing ring is housed. It is combined with the outer wall of flange, bending part, barrel by ring bodies, forms reinforcement structure, preferably prevent barrel open end Deformation and there is leak, and its make and it is easy to assembly, maintainability is good.

Description of the drawings

Fig. 1 is the utility model stereogram；

Fig. 2 is the utility model vertical view；

Fig. 3 is the A-A sectional views of Fig. 2；

Fig. 4 is enlarged drawing at the B of Fig. 3；

Fig. 5 is the vertical view of barrel；

Fig. 6 is the C-C sectional views of Fig. 5；

Fig. 7 is the stereogram of ring bodies.

Specific implementation mode

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.

Shown in Fig. 1 to Fig. 7, a kind of inner-tube structure of electric heater, including barrel 1, end cap 2, the open end of barrel 1 It is outward extended with flange 11, the middle part of flange 11 is bent to form a bending part 12, a ring bodies 3 to close to 1 side of barrel Divide the space surrounded between the embedded flange 11,1 outer wall of bending part 12 and barrel, the outer wall 31 of ring bodies 3 is ladder circle Cylindricality；Flange 11 and bending part 12 can select between 90 ° and 120 °.

End cap 2 covers the opening in barrel 1, and end cap 2, flange 11 and ring bodies 3 are correspondingly provided with multipair through-hole 4, each pair of Through-hole 4 is worn there are one bolt 41 is connected, and be screwed on a nut 42, multiple connection bolts 41 and multiple spiral shells on each connection bolt 41 Mother 42 is locked together end cap 2, flange 11 and ring bodies 3；Gasket 5 is housed between end cap 2 and the flange 11, connects spiral shell Bolt 41 also extends through gasket 5.

Sealing between end cap 2 and barrel 1 can also be used installs sealing ring between end cap 2 and the inner wall of barrel 1.

It is preferred that the barrel 1 is made of stainless steel or aluminium alloy, the end cap 2 is stainless steel or aluminium alloy or plastic cement system At the ring bodies 3 is made of aluminium alloy or plastic cement.

Water inlet pipe 6 and outlet pipe 7 are equipped on the end cap 2.

The water outlet of the water inlet pipe 6 is close to the interior bottom of barrel 1；The part that outlet pipe 7 is in barrel 1 is formed The water inlet of bending, outlet pipe 7 is arranged at proximal cover 2.

The middle part of the water inlet pipe 6 is equipped with shoulder 8, and shoulder 8 leans against on end cap 2, passes through end cap 2 by screw 9 and locks Shoulder 8 on water inlet pipe 6 is fixed together water inlet pipe 6 and end cap 2.

Sealing ring 10 is housed between the shoulder 8 on the water inlet pipe 6 and end cap 2.

The middle part of the outlet pipe 7 is equipped with shoulder 8, and shoulder 8 leans against on end cap 2, passes through end cap 2 by screw 9 and locks Shoulder 8 on outlet pipe 7 is fixed together outlet pipe 7 and end cap 2.

Sealing ring 10 is housed between the shoulder 8 on the outlet pipe 7 and end cap 2.

The water inlet pipe 6 and outlet pipe 7 are made of plastic cement, and water inlet pipe 6 and outlet pipe 7 are in external part and are fixed with The end of metal connector sleeve 20, metal connector sleeve 20 is equipped with connection external screw thread 201.

It the above is only one preferred embodiment of the utility model, those skilled in the art is made equivalent by claim Change the protection domain for both falling within this case.

Claims (10)

1. a kind of inner-tube structure of electric heater, including barrel, end cap, it is characterised in that：The open end of barrel is to extension Stretching has flange, and the middle part of flange is bent to form a bending part to close to barrel side, a ring bodies part or has fully embedded into institute The space surrounded between flange, bending part and barrel outer wall is stated, end cap covers the opening in barrel, end cap, flange and ring Shape body is correspondingly provided with multipair through-hole, and each pair of through-hole is worn there are one bolt is connected, and be screwed on a nut on each connection bolt, multiple Connection bolt and multiple nuts are locked together end cap, flange and ring bodies；Gasket is housed between end cap and the flange Or sealing ring is housed between end cap and the inner wall of barrel.

2. a kind of inner-tube structure of electric heater according to claim 1, it is characterised in that：The ring bodies is partially submerged into The outer wall in the space surrounded between the flange, bending part and barrel outer wall, the ring bodies is ladder circle cylindricality.

3. a kind of inner-tube structure of electric heater according to claim 1, it is characterised in that：The barrel is stainless steel Or aluminium alloy is made, the end cap is made of stainless steel or aluminium alloy or plastic cement, and the ring bodies is made of aluminium alloy or plastic cement.

4. a kind of inner-tube structure of electric heater according to any one of claims 1 to 3, it is characterised in that：The end cap On be equipped with water inlet pipe and outlet pipe.

5. a kind of inner-tube structure of electric heater according to claim 4, it is characterised in that：The water outlet of the water inlet pipe Close to the interior bottom of barrel；Water outlet pipe part forms bending in the part in barrel, and the water inlet of outlet pipe is at proximal cover Setting.

6. a kind of inner-tube structure of electric heater according to claim 4, it is characterised in that：It is set in the middle part of the water inlet pipe There are shoulder, shoulder to lean against on end cap, end cap is passed through by screw and the shoulder locked on water inlet pipe is connected water inlet pipe and end cap Together.

7. a kind of inner-tube structure of electric heater according to claim 6, it is characterised in that：Shoulder on the water inlet pipe Sealing ring is housed between end cap.

8. a kind of inner-tube structure of electric heater according to claim 4, it is characterised in that：It is set in the middle part of the outlet pipe There are shoulder, shoulder to lean against on end cap, end cap is passed through by screw and the shoulder locked on outlet pipe is connected outlet pipe and end cap Together.

9. a kind of inner-tube structure of electric heater according to claim 8, it is characterised in that：Shoulder on the outlet pipe Sealing ring is housed between end cap.

10. a kind of inner-tube structure of electric heater according to claim 4, it is characterised in that：The water inlet pipe and water outlet Pipe is made of plastic cement, and water inlet pipe and water outlet pipe part are fixed with metal connector sleeve, the end of metal connector sleeve in external part Equipped with connection external screw thread.