CN205329161U

CN205329161U - Sacrificial anode structure

Info

Publication number: CN205329161U
Application number: CN201620111064.3U
Authority: CN
Inventors: 庞伟斌; 甄子胜
Original assignee: MAGONTEC XI'AN CO Ltd
Current assignee: MAGONTEC XI'AN CO Ltd
Priority date: 2016-02-03
Filing date: 2016-02-03
Publication date: 2016-06-22
Anticipated expiration: 2026-02-03

Abstract

The utility model relates to a sacrificial anode structure, including magnesium stick, run through the excellent core in the magnesium stick, the spiral shell head that is used for connecting the inner bag, cover and establish at the insulating seal cover on magnesium stick upper portion and install the nut on excellent core upper portion, the upper end at the seal cover is established to the spiral shell headgear, be provided with insulating the pad under the nut between the up end of terminal surface and spiral shell head, stack up the terminal surface and be provided with binding post insulating. The utility model discloses owing to saved the connecting axle in the prior art design or equate the link, the structure is simple more, economy and connect more reliably. For guaranteeing joint strength, the preferred diameter of excellent core size in this structure is greater than 5mm's ordinary steel or nonrust steel.

Description

A kind of sacrificial anode structure

Technical field

This utility model belongs to cathodic corrosion guard technology field, particularly relates to a kind of sacrificial anode structure。

Background technology

Storage-type electric water heater is the indispensable household electrical appliance of the daily bathing of people, and one of them main parts is exactly the water gallbladder for water storage。The material of water gallbladder is generally steel, although surface can be coated with the coatings such as enamel, but invade for a long time due to it and steep in water, and corrosion still inevitably, and then causes that water gallbladder leaks, and user causes potential application risk。Therefore, storage-type electric water heater typically requires a piece sacrificial anode of installation for preventing the corrosion of water gallbladder。

Generally, sacrificial anode is all the material more active than water gallbladder material, and is directly mounted on inner bag by nut。So can constitute a galvanic element system at the water in sacrificial anode, water gallbladder and water gallbladder, ensure that water gallbladder does not corrode by oneself's " sacrifice " of sacrificial anode。Playing a role owing to sacrificial anode is consumed by oneself, therefore the life-span of every sacrificial anode is all limited, it should periodic replacement。But, use in water heater process real consumption person, seldom have the behavior and custom of actively changing sacrificial anode so that the water gallbladder of water heater exists certain application risk。

For problem above, some water heater producers devise the product that can provide sacrificial anode consumption state signal, such as patent CN102853551A etc.。But, these provide the water heaters design of signal to need to realize between sacrificial anode and water gallbladder reliable and stable insulating mounting。Its common structure is: for and the nut that connects of water gallbladder, realize and the insulation of sacrificial anode rod by being arranged on sealing shroud on special rod core and insulation sleeve。This special rod core is usually when sacrificial anode rod casts and is previously positioned in mould is cast in anode stub。For the anode stub that extrusion process produces, its built-in excellent core is isometrical and through whole anode stub, it is impossible to realizes the preset of this special excellent core, therefore realizes insulation system and have very big difficulty。A kind of structure proposed in patent CN202902626U, adds a connection axle playing over-effect between magnesium rod and installation nut。But the structure that the addition connecting axle makes whole product is complicated, and connection reliability risk is bigger。

Utility model content

The purpose of this utility model is in that the shortcoming overcoming above-mentioned prior art, it is provided that a kind of sacrificial anode structure, and it is simpler, economical and connect relatively reliable purpose that it is capable of structure。

The purpose of this utility model is achieved through the following technical solutions:

This sacrificial anode structure, including magnesium rod, through the excellent core in magnesium rod, in order to connect the screw head of inner bag, be set in the insulated enclosure set on magnesium rod top and be arranged on the nut on rod core top；Described screw head is set in the upper end of sealing shroud；It is provided with felt pad between described nut lower surface and the upper surface of screw head, felt pad upper surface is provided with binding post。

Further, between described nut lower surface and binding post, spring washer and plain cushion it are disposed with from top to bottom。

Further, the end face beyond the upper bars core of described magnesium rod is sealing plane, the sealing plane close fit that described sealing shroud is excellent with magnesium。

Further, described felt pad is installed in the centre bore of screw head, and with screw head, binding post is constituted insulation system。

Further, described screw head, felt pad, binding post, plain cushion, spring washer, nut are all assemblied on the excellent core being processed into screw thread。

Further, described magnesium rod outside wall surface by upper under be processed to the epimere of various outer diameter, stage casing and hypomere three grades, being gradually increased from hypomere external diameter by epimere, three grades of shapes that described sealing shroud is excellent with magnesium adapt, and the external diameter of the sealing shroud being set in magnesium rod stage casing is identical with the external diameter of magnesium rod hypomere。

Further, described nut is self-locking or non-self-locking nut。

Further, described rod core is the diameter steel bar more than 3mm。It is preferably greater than 5mm。

Further, rubber-metal binding agent is increased between described magnesium rod and sealing shroud。

This utility model has the advantages that

The structure of sacrificial anode of the present utility model due to eliminate prior art design in connection axle or equivalent link, structure is simpler, economical and connects relatively reliable。For guaranteeing bonding strength。

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model。

Wherein: 1 is magnesium rod；2 is rod core；3 is sealing shroud；4 is screw head；5 is felt pad；6 is binding post；7 is plain cushion；8 is spring washer；9 is nut。

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in further detail:

Referring to Fig. 1: sacrificial anode structure of the present utility model, including magnesium rod 1, through the excellent core 2 in magnesium rod 1, in order to connect the screw head 4 of inner bag, be set in the insulated enclosure set 3 on magnesium rod 1 top and be arranged on the nut 9 on rod core 2 top；Described screw head 4 is set in the upper end of sealing shroud 3；It is provided with felt pad 5 between described nut 9 lower surface and the upper surface of screw head 4, felt pad 5 upper surface is provided with binding post 6。Spring washer 8 and plain cushion 7 it is disposed with from top to bottom between described nut 9 lower surface and binding post 6。End face beyond the upper bars core 2 of described magnesium rod 1 is sealing plane, the sealing plane close fit of described sealing shroud 3 and magnesium rod 1。Described felt pad 5 is installed in the centre bore of screw head 4, and binding post 6 and screw head 4 are constituted insulation system。Described screw head 4, felt pad 5, binding post 6, plain cushion 7, spring washer 8, nut 9 are all assemblied on the excellent core 2 being processed into screw thread。The outside wall surface of described magnesium rod 1 by upper under be processed to the epimere of various outer diameter, stage casing and hypomere three grades, it is gradually increased from hypomere external diameter by epimere, three grades of shapes of described sealing shroud 3 and magnesium rod 1 adapt, and the external diameter of the sealing shroud 3 being set in magnesium rod 1 stage casing is identical with the external diameter of magnesium rod 1 hypomere。

In most preferred embodiment of the present utility model, nut 9 is self-locking or non-self-locking nut。The material of magnesium rod is alternatively Al, Zn and Al base and Zn base alloy material。Rubber-metal binding agent is increased, it is achieved the sealing between magnesium rod 1 and sealing shroud 3, it is prevented that water enters magnesium rod sealing surface position between magnesium rod 1 and sealing shroud 3。

Magnesium of the present utility model rod 1 transfers to certain length extruded rod core 2 by machining, and its extruded rod core 2 Surface Machining becomes the screw thread matched with rod core diameter, and the excellent core end face car of magnesium rod 1 is gone out sealing plane；Wherein sealing shroud 3 and magnesium rod 1 sealing surface close fit, play insulating effect between magnesium rod 1 and screw head 4, prevent magnesium rod root corrosion (corroding about root, see patent ZL201320740214.3) simultaneously；Screw head 4, felt pad 5, binding post 6, plain cushion 7, spring washer 8, nut 9 accessory are all assemblied on the extruded rod core 2 being processed into screw thread, namely constitute magnesium anode structure described in the utility model。Due to eliminate other design in connection axle or equivalent link, this structure is simpler, economical and connects relatively reliable。For guaranteeing bonding strength, the excellent core 2 in this structure is the diameter dimension common steel more than 3mm or stainless steel, in preferred embodiment of the present utility model, it is preferable that diameter dimension is more than 5mm。And this utility model is with the magnesium rod 1 running through rod core 2, it is possible to made by extrusion-processing technology, it is also possible to made by techniques such as castings。

Claims

1. a sacrificial anode structure, it is characterised in that: include magnesium rod (1), through the excellent core (2) in magnesium rod (1), in order to connect the screw head (4) of inner bag, be set in the insulated enclosure set (3) on magnesium rod (1) top and be arranged on the nut (9) on rod core (2) top；Described screw head (4) is set in the upper end of sealing shroud (3)；Felt pad (5) it is provided with between the upper surface of described nut (9) lower surface and screw head (4)。

2. sacrificial anode structure according to claim 1, it is characterised in that: felt pad (5) upper surface is provided with binding post (6)。

3. sacrificial anode structure according to claim 2, it is characterised in that: between described nut (9) lower surface and binding post (6), it is disposed with spring washer (8) and plain cushion (7) from top to bottom。

4. sacrificial anode structure according to claim 1, it is characterized in that: the end face beyond the upper bars core (2) of described magnesium rod (1) is sealing plane, the sealing plane close fit of described sealing shroud (3) and magnesium rod (1)。

5. sacrificial anode structure according to claim 1, it is characterised in that: described felt pad (5) is installed in the centre bore of screw head (4), and with screw head (4), binding post (6) is constituted insulation system。

6. the sacrificial anode structure according to claim 1-5 any one, it is characterised in that: described screw head (4), felt pad (5), binding post (6), plain cushion (7), spring washer (8), nut (9) are all assemblied on the excellent core (2) being processed into screw thread。

7. sacrificial anode structure according to claim 6, it is characterized in that: described magnesium rod (1) outside wall surface by upper under be processed to the epimere of various outer diameter, stage casing and hypomere three grades, it is gradually increased from hypomere external diameter by epimere, three grades of shapes of described sealing shroud (3) and magnesium rod (1) adapt, and the external diameter of the sealing shroud (3) being set in magnesium rod (1) stage casing is identical with the external diameter of magnesium rod (1) hypomere。

8. sacrificial anode structure according to claim 6, it is characterised in that: described nut (9) is self-locking or non-self-locking nut。

9. sacrificial anode structure according to claim 1, it is characterised in that: described rod core (2) is the diameter steel material more than 3mm。

10. sacrificial anode structure according to claim 1, it is characterised in that: increase rubber-metal binding agent between described magnesium rod (1) and sealing shroud (3)。