CN215568620U - Electric water heater prevents electric wall pipe connection sealing device - Google Patents
Electric water heater prevents electric wall pipe connection sealing device Download PDFInfo
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- CN215568620U CN215568620U CN202121168984.6U CN202121168984U CN215568620U CN 215568620 U CN215568620 U CN 215568620U CN 202121168984 U CN202121168984 U CN 202121168984U CN 215568620 U CN215568620 U CN 215568620U
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- fixing nut
- water heater
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Abstract
The utility model relates to the technical field of water heaters, in particular to a connection sealing device for an electricity-proof wall pipeline of an electric water heater, which comprises a rotating shaft, a sealing ring sleeved on the rotating shaft and a rotating fixing nut sleeved on the rotating shaft, wherein the rotating fixing nut is sleeved on the rotating shaft; during assembly, the rotary fixing nut moves towards the installation direction, and the rotary fixing nut extrudes the sealing ring so as to seal between the rotary fixing nut and the rotary shaft. Compared with the prior art, through set up the sealing washer between rotatory fixation nut and rotation axis to make and form between rotatory fixation nut and the rotation axis sealedly, thereby stop the problem that the seepage appears in the junction of rotatory fixation nut and rotation axis, simple installation is swift, and the leakproofness is good, long service life.
Description
Technical Field
The utility model relates to the technical field of water heaters, in particular to a sealing device for connection of an electricity-proof wall pipeline of an electric water heater.
Background
The current electricity-proof wall pipe connection structure of the electric water heater mainly comprises two types, namely fixed connection (the structure is shown as figure 4) and traditional movable connection (the structure is shown as figure 3).
Referring to fig. 1, the fixed connection structure is not provided with a rotating shaft, no water leakage occurs at the rotating shaft, a sealed cavity is formed, and a second seal is formed by adopting means such as sealant; the connecting nut 7 rotates and is connected with the joint of the liner pipe, the rotation angle of the electricity-proof wall main body is not unique after the connection nut is screwed, the connection between the electricity-proof wall and the water heater is loosened easily to cause leakage when the electricity-proof wall is externally connected with a pipeline, the loosening-proof fixing structure is complex, and meanwhile, the cost is high.
Please see fig. 2, when the traditional movable connection is installed, the rotary fixing nut 2 is rotated to be connected with the liner tube joint, the damping tube 4 of the electricity-proof wall does not rotate along with the rotary fixing nut 2, the loosening of the connection between the electricity-proof wall and the water heater is not easily caused when the damping tube 4 is externally connected with a pipeline, the fixing structure for preventing loosening is simple, but because the rotating shaft 1 exists, a sealing cavity can not be formed between the rotary fixing nut 2 and the rotating shaft 1, when the sealing structure between the liner tube joint and the rotating shaft 1 fails, water can flow into the cavity between the fixing nut 2 and the rotating shaft 1, and the potential safety hazard of water leakage exists between the fixing nut 2 and the rotating shaft 1.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electricity-proof wall pipeline connecting and sealing device of an electric water heater, which has good sealing performance and aims to overcome the defects in the prior art.
The purpose of the utility model is realized by the following technical scheme: the application provides an electric water heater prevents electric wall tube coupling sealing device, its characterized in that: comprises a rotating shaft, a sealing ring sleeved on the rotating shaft and a rotating fixing nut sleeved on the rotating shaft; during assembly, the rotary fixing nut moves towards the installation direction, and the rotary fixing nut extrudes the sealing ring so as to seal between the rotary fixing nut and the rotary shaft.
The end part of the rotating shaft protrudes outwards to form a limiting ring, the end part of the rotating fixing nut protrudes inwards to form a butting ring, and the sealing ring is positioned between the limiting ring and the butting ring; during assembly, the abutting ring and the limiting ring extrude the sealing ring together.
Wherein, the periphery side of rotation axis is seted up and is used for the storage tank of holding sealing washer.
The outer peripheral side surface of the rotating shaft protrudes outwards to form a positioning ring, the outer diameter of the positioning ring is smaller than or equal to the inner diameter of the abutting ring, and the accommodating groove is formed in the top end of the positioning ring; after assembly, the bottom end face of the rotary fixing nut is flush with the bottom end face of the positioning ring.
Wherein, after assembly, the compression amount of the sealing ring is 10-50%.
Wherein, the sealing washer is the o type sealing washer.
The rotary fixing nut and the rotary shaft are both metal pieces, the outer surface of each metal piece is provided with an antirust coating, the rotary shaft is provided with an installation compression in-place mark, and when the installation compression is in place, the installation compression in-place mark is flush with the bottom surface of the fixing nut.
The inner diameter of the sealing ring is 12.8mm, the diameter of the cross section of the sealing ring is 1.9mm, the sealing ring is made of ethylene propylene diene monomer or silicon rubber, the rotating shaft and the rotating fixing nut are made of galvanized A3 steel, the depth of a cavity formed between the fixing shaft and the rotating fixing nut is 1.4mm, and the compression amount of the sealing ring is 0.5 mm.
Wherein, still include the damping tube, the rotating tube is as inserts embedding damping tube.
Wherein, the top end surface of the rotating pipe is provided with a sealing gasket.
Wherein, there is the convenient inspection of the structure that targets in place of installation on the rotation axis, and when the installation targets in place, the stair structure of rotation axis just with rotatory fixation nut bottom surface parallel and level, the rotation axis of visualing is showing with the fixation nut clearance and is diminishing to can see bit line and nut bottom surface parallel and level.
The utility model has the beneficial effects that: the sealing ring is arranged between the rotary fixing nut and the rotating shaft, so that the sealing is formed between the rotary fixing nut and the rotating shaft, the problem of leakage at the joint of the rotary fixing nut and the rotating shaft is solved, the electric leakage prevention wall adopting the sealing device can form double-sealing protection, in addition, the mounting mark is formed by arranging the positioning ring, whether the assembly sealing is in place or not can be visually observed, the mounting is simple, convenient and quick, the sealing performance is good, and the service life is long.
Drawings
The utility model is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the utility model, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a cross-sectional view of a prior art fixed connection.
Figure 2 is a cross-sectional view of a prior art articulating joint.
Fig. 3 is a sectional view of the sealing device in the embodiment.
FIG. 4 is a sectional view showing the connection of the sealing means to the electric heater in the embodiment.
Fig. 5 is a sectional view of the rotary shaft in the embodiment.
Reference numerals: the sealing device comprises a rotating shaft 1, a limiting ring 11, a containing groove 12, a rotary fixing nut 2, a butting ring 21, a sealing ring 3, a damping tube 4, a sealing gasket 5, a liner tube joint 6, a connecting nut 7, a positioning ring 8, a sealant 9 and an installation compression in-place mark 10.
Detailed Description
The utility model is further described with reference to the following examples.
The utility model relates to a specific implementation mode of an electricity-proof wall pipeline connecting and sealing device of an electric water heater, as shown in figures 3 to 5, the sealing device comprises a rotating shaft 1, a sealing ring 3 sleeved on the rotating shaft 1 and a rotary fixing nut 2 sleeved on the rotating shaft 1.
In this embodiment, the end of the rotating shaft 1 protrudes outward to form the limit ring 11, the end of the rotating fixing nut 2 protrudes inward to form the abutment ring 21, and the seal ring 3 is located between the limit ring 11 and the abutment ring 21. In order to facilitate the installation of the seal ring 3 and the positioning of the seal ring 3, a receiving groove 12 for receiving the seal ring 3 is formed in the outer peripheral side surface (the top end of the positioning ring 8) of the rotating shaft 1. During the assembly, rotatory fixation nut 2 moves towards the installation direction, rotatory fixation nut 2 extrudees sealing washer 3, the butt ring 21 can apply an extrusion force up to sealing washer 3 promptly, spacing ring 11 also can apply a extrusion force down to sealing washer 3 simultaneously, thereby make butt ring 21 and spacing ring 11 extrude sealing washer 3 jointly, make to form between rotatory fixation nut 2 and the rotation axis 1 sealed, thereby make to form seal chamber between rotatory fixation nut 2 and the rotation axis 1.
Referring to fig. 4, the sealing device further includes a damper tube 4, a rotary tube as an insert is inserted into the damper tube 4, and a sealing gasket 5 is provided on a top end surface of the rotary tube. When the electricity-proof wall is connected with the inner container of the water heater, the rotary fixing nut 2 is screwed outside the inner container pipe joint 6, and the packing force generated between the inner container pipe joint 6 and the rotary shaft 1 compresses the sealing gasket 5, so that a first sealing structure between the inner container pipe joint 6 and the rotary shaft 1 is formed, and the damping pipe 4 of the electricity-proof wall and the inner container of the water heater are effectively sealed. The compressed gasket 5 is compressed by the rotating fixing nut 2, and after the rotating fixing nut 2 is fastened, the rotating shaft 1 is subjected to a downward reaction force in one direction provided by the compressed gasket 5, the reaction force is converted into a downward extrusion force of the limiting ring 11 so as to compress the sealing ring 3 on the rotating shaft 1, and the sealing ring 3 is compressed in the accommodating groove 12.
It should be noted that in order to form an effective plane seal or radial seal between the rotating shaft 1 and the rotating fixing nut 2, the compression amount of the seal ring 3 needs to be accurately controlled so that the seal cavity formed between the rotating shaft 1 and the rotating fixing nut 2 has a long service life. If the acting force provided by rotating the fixing nut 2 is too large, the sealing gasket 5 and the sealing ring 3 are compressed excessively, and although effective sealing can be achieved, the excessive compression can cause the compression amount of the sealing gasket 5 and the sealing ring 3 to be too large, and the service life of the sealing gasket 5 and the sealing ring 3 is affected due to the excessive compression.
In order to accurately control the compression amount of the sealing gasket 5 and the sealing ring 3 and ensure that the sealing gasket 5 and the sealing ring 3 have the optimal use state, the peripheral side surface of the rotating shaft 1 protrudes outwards to form a section of positioning ring 8. It should be noted that the outer diameter of the positioning ring 8 is smaller than or equal to the inner diameter of the abutment ring 21, so that the rotating fixing nut 2 can be fitted over the outer circumferential side of the positioning ring 8. After the assembly, the bottom face of rotatory fixation nut 2 and the bottom face parallel and level of holding ring 8, form the best state of screwing, make the compressive capacity of sealed 5 and sealing washer 3 all reach the optimum value, sealing washer 3 compressive capacity at this moment is about 30%, form effectual plane seal and radial seal, combine figure 5, the bottom surface of holding ring 8 then becomes installation compression mark 10 that targets in place, can observe the best installation state of targeting in place through the vision, thereby make sealing device's installation more swift and convenient, it is more firm and reliable to connect, guarantee sealing device's life. There is the installation compression mark 10 that targets in place to make things convenient for the inspection on the rotation axis 1, and when the installation targets in place, the stair structure of rotation axis 1 just with the bottom surface parallel and level of rotatory fixation nut 2, the rotation axis 1 that visualizes is showing diminishing with rotatory fixation nut 2 clearance to can see the bottom surface parallel and level of bit line and rotatory fixation nut 2.
In addition, if the rotating shaft 1 can be rotated, and the damping tube 4 of the electricity-proof wall does not rotate along with the rotating fixed shaft, even if the sealing gasket 5 fails, after the first sealing structure fails, a sealing cavity formed by the rotating shaft 1, the sealing ring 3 and the rotating fixed nut 2 is used as a second sealing structure, and then the sealing glue 9 arranged between the rotating fixed nut 2 and the liner pipe joint 6 is matched to form reliable secondary sealing, so that the connection water leakage fault is avoided.
In this embodiment, the sealing ring 3 is an o-shaped sealing ring 3, and after assembly, the compression amount of the sealing ring 3 can be between 10% and 50%, specifically, the setting can be selected according to the volume of the sealing cavity.
For example, the sealing ring 3 is an o-shaped sealing ring 3 with the inner diameter of 12.8mm and the section diameter of 1.9mm, the material is ethylene propylene diene monomer or silicon rubber, the depth of a cavity formed between the fixing shaft and the screwing and fixing nut is 1.4mm, the compression amount of the sealing ring 3 is 0.5mm, and the problems of in-place compression and aging caused by over-compression can be guaranteed.
In this embodiment, the rotating shaft 1 and the screwing and fixing nut are not contacted with water, both the screwing and fixing nut 2 and the rotating shaft 1 can be metal pieces, the outer surfaces of the metal pieces are provided with antirust coatings, and particularly, common low-carbon steel electroplating can be selected to replace copper or stainless steel with higher cost.
The electric water heater prevents that electric wall pipe connection sealing device of this embodiment, through set up sealing washer 3 between rotatory fixation nut 2 and rotation axis 1, so that form between rotatory fixation nut 2 and the rotation axis 1 sealedly, thereby stop the problem that the seepage appears in the junction of rotatory fixation nut 2 and rotation axis 1, adopt this sealing device prevent that the electric wall can form double seal protection, in addition, form the installation sign through setting up holding ring 8, whether can the visual observation assembly seal target in place, simple installation is swift, the leakproofness is good, long service life.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides an electric water heater prevents electric wall pipe connection sealing device which characterized in that: the rotary sealing device comprises a rotating shaft, a sealing ring sleeved on the rotating shaft and a rotary fixing nut sleeved on the rotating shaft;
during assembly, the rotary fixing nut moves towards the installation direction, and the rotary fixing nut extrudes the sealing ring so as to form sealing between the rotary fixing nut and the rotating shaft.
2. The electric water heater electricity-proof wall pipe connection sealing device of claim 1, characterized in that: the end part of the rotating shaft protrudes outwards to form a limiting ring, the end part of the rotating fixing nut protrudes inwards to form a butting ring, and the sealing ring is positioned between the limiting ring and the butting ring;
during assembly, the abutting ring and the limiting ring extrude the sealing ring together.
3. The electric water heater electricity-proof wall pipe connection sealing device of claim 1 or 2, characterized in that: and the peripheral side surface of the rotating shaft is provided with a containing groove for containing the sealing ring.
4. The electric water heater electricity-proof wall pipe connection sealing device of claim 2, characterized in that: the outer peripheral side surface of the rotating shaft protrudes outwards to form a positioning ring, the outer diameter of the positioning ring is smaller than or equal to the inner diameter of the abutting ring, and the accommodating groove is formed in the top end of the positioning ring;
after assembly, the bottom end face of the rotary fixing nut is flush with the bottom end face of the positioning ring.
5. The electric water heater electricity-proof wall pipe connection sealing device of claim 1, 2 or 4, characterized in that: after assembly, the compression amount of the sealing ring is 10% -50%.
6. The electric water heater electricity-proof wall pipe connection sealing device of claim 1, characterized in that: the sealing ring is an o-shaped sealing ring.
7. The electric water heater electricity-proof wall pipe connection sealing device of claim 1, characterized in that: rotatory fixation nut and rotation axis are the metalwork, the surface of metalwork is equipped with anti rust coating, the rotation axis is equipped with the installation compression mark that targets in place, and when the installation compression targets in place, the installation compression marks that targets in place and fixation nut's bottom surface parallel and level.
8. The electric water heater electricity-proof wall pipe connection sealing device of claim 1, characterized in that: the inner diameter of the sealing ring is 12.8mm, the diameter of the cross section of the sealing ring is 1.9mm, the sealing ring is made of ethylene propylene diene monomer or silicon rubber, the rotating shaft and the rotating fixing nut are made of galvanized A3 steel, the depth of a cavity formed between the fixing shaft and the rotating fixing nut is 1.4mm, and the compression amount of the sealing ring is 0.5 mm.
9. The electric water heater electricity-proof wall pipe connection sealing device of claim 1, characterized in that: still include the damping tube, the rotatory pipe is as the inserts embedding the damping tube.
10. The electric water heater electricity-proof wall pipe connection sealing device of claim 1, characterized in that: and a sealing gasket is arranged on the top end surface of the rotating pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121168984.6U CN215568620U (en) | 2021-05-27 | 2021-05-27 | Electric water heater prevents electric wall pipe connection sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121168984.6U CN215568620U (en) | 2021-05-27 | 2021-05-27 | Electric water heater prevents electric wall pipe connection sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215568620U true CN215568620U (en) | 2022-01-18 |
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ID=79864514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121168984.6U Active CN215568620U (en) | 2021-05-27 | 2021-05-27 | Electric water heater prevents electric wall pipe connection sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215568620U (en) |
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2021
- 2021-05-27 CN CN202121168984.6U patent/CN215568620U/en active Active
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