Water heaters and gas stoves often use an ignition pin to ignite. The ignition pin generally makes the lead pin emit electric sparks through the ignition electrode, and the ignition electrode needs an insulating, high temperature resistant and explosion-proof protective cover. The best currently is a ceramic protective cover. Because the ceramic protective cover has a smooth surface and is integrally formed, it is often connected to the ignition electrode by a paste method, but this connection is not reliable, and it is too dependent on the experience of the operator, which makes it difficult to guarantee the quality of the batch ignition pin. In order to overcome the above-mentioned shortcomings, the utility model provides a ceramic protective sleeve with novel design, which includes a ceramic sleeve and two plugs. The plug is a round table structure made of rubber. An inner end surface of the plug is provided with a A stuffed hole, a stuffed ceramic pillar is embedded in the stuffed hole, the end surface of the stuffed ceramic hole at the entrance of the stuffed hole is flush with the inner end face of the plug, the outer wall of the plug is provided with a stripe-shaped protrusion, and the ceramic sleeve The two ends of the inner wall are provided with a ramp opening, which is matched with the plug, and the ramp opening and the ceramic sleeve are an integrated structure.
Further, a first through hole is provided on an end surface of the ceramic pillar, and a second through hole is provided on an outer end surface of the plug. The second through hole is in communication with the first through hole, and the lead and the lead connected by the ignition electrode are connected. The needle passes through the first and second through holes.
Further, the depth of the ramp opening is matched with the size of the ignition electrode installed in the ceramic protective sleeve. When the ignition electrode is placed in the ceramic protective sleeve, the plug is completely inserted into the ramp opening, and the inner end face of the plug is just against the ignition. Electrodes, to ensure that the ignition electrode is in contact with insulated ceramics.
Further, a striped groove is provided on an inner wall of the ramp opening, and the groove is matched with a striped protrusion. When the plug is connected to the ramp opening, the cooperation of the striped groove and the striped protrusion makes the connection. More rigorous.
Further, the ceramic pillar is provided with an annular notch at the entrance of the stuffy hole, and an annular protrusion matching the annular notch is provided at the entrance of the stuffy hole on the plug, and the annular protrusion and the plug are integrated into one structure. Ensure that the ceramic cylinder in the stuffing hole fits tightly with the stuffing hole.
The beneficial effect of the utility model is that the ceramic protective sleeve provided by the utility model does not need to be pasted. The ignition electrode is plugged into the ceramic protective sleeve, and the two ends are plugged, and the ignition electrode is the inner end face of the plug. Withstand and fix, and the surroundings of the ignition electrode are all insulated, high-temperature ceramics, which not only achieves fast and reliable installation, but does not affect the protective function of the ceramic protective sleeve.
BRIEF DESCRIPTION OF THE DRAWINGS
The utility model will be described by way of examples and with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of the plug according to the present invention.
detailed description
The present invention will now be described in further detail with reference to the drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore they only show the structures related to the present invention.
As shown in FIG. 1 and FIG. 2, the utility model is a ceramic protective sleeve, which includes a ceramic sleeve 1 and two plugs 2. The plug 2 is a round table structure made of rubber, and the inner end face of the plug 2 A boring hole 3 is arranged on the boring hole 3, and a ceramic pillar 4 is embedded in the boring hole 3. The end face of the ceramic pillar 4 at the entrance of the boring hole 3 is flush with the inner end face of the plug 2. The outer wall of the plug 2 is provided with The stripe-shaped protrusions 5 are provided with sloped ports 6 at both ends of the inner wall of the ceramic sleeve 1, the sloped ports 6 are matched with the plugs 2, and the sloped ports 6 are integrated with the ceramic sleeve 1.
A first through hole 7 is provided on an end surface of the ceramic pillar 4, and a second through hole 8 is provided on an outer end surface of the plug 2, and the second through hole 8 communicates with the first through hole 7.
The depth of the ramp opening 6 is matched with the size of the ignition electrode installed in the ceramic protective sleeve, to ensure that all sides of the ignition electrode are in contact with the insulating ceramic.
The inner wall of the ramp opening 6 is provided with a stripe-shaped groove 9, and the stripe-shaped groove 9 cooperates with the stripe-shaped protrusion 5.
The ceramic cylinder 4 is provided with a ring-shaped notch 10 at the entrance of the stuffy hole 3, and the plug 2 is provided with a ring-shaped protrusion 11 that cooperates with the ring-shaped notch 10 at the entrance of the stuffy hole 3, the ring-shaped protrusion 11 and the plug 2 is an integrated structure.
The ceramic protective sleeve provided by the utility model does not need to be pasted. The ignition electrode is plugged into the ceramic protective sleeve, and the plug is plugged at both ends. The ignition electrode is fixed against the inner end surface of the plug, and the ignition electrode is surrounded by it. All the contacts are insulated, high-temperature ceramics, which not only achieves fast and reliable installation, but also does not affect the protective function of the ceramic protective sleeve.
The foregoing is based on the present utility model for inspiration. Through the above description, the relevant staff can make various changes and modifications without departing from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, and its technical scope must be determined according to the scope of the claims.
Manufacturing method of ceramic protective sleeve
2020 03/30