Electric water heater safety valve
Technical field
The utility model relates to the safety valve technical field, is specifically related to a kind of electric water heater safety valve.
Background technique
Existing electric water heater safety valve structure arranges unreasonable, when safety valve was opened pressure release or got rid of water heater bottom sewage, the parts in Decompression valves directly contacted with water heater or sewage, and this often easily makes its interior spring get rusty, the phenomenon such as cause safety valve working life to shorten or pressure limiting is malfunctioning, in addition, safety valve pull bar place Sealing resistance is larger, can not automatically reset after leakage, affected the use function of safety valve, safety valve structure is complicated, and manufacturing efficiency is low, and cost of production is high.
The model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of structure to arrange rationally, compact structure, simply, reliable operation, the electric water heater safety valve of the low and long service life of cost of production.
for achieving the above object, the utility model provides following technological scheme: a kind of electric water heater safety valve, comprise valve body, be provided with water-inlet cavity and pressure-releasing chamber on described valve body, be provided with intake tunnel between described water-inlet cavity and pressure-releasing chamber, be provided with one-way water inlet valve in described water-inlet cavity, be provided with water draining beak on pressure-releasing chamber, be provided with Decompression valves in pressure-releasing chamber, described Decompression valves comprises rubber body, the rubber body pressure cap, pull bar, Returnning spring and adjustment cap, be provided with cavity in described rubber body, described rubber body pressure cap is connected with the pressure-releasing chamber inner thread, pull bar the inner is passed the rubber body pressure cap and is inserted in cavity and be fixedly connected with cavity inner wall, described rubber body is arranged to the post barrel-like structure, it is fixing that the rubber body edge extends out to the sealing of rubber body pressure cap, this rubber body pressure cap outer end arranges the adjustment cap, described Returnning spring is socketed on pull bar, this Returnning spring the inner is connected to pull bar the inner, the Returnning spring outer end withstands on to be adjusted on cap, in the outlet of rubber body top means of press seals at intake tunnel under the effect of Returnning spring, described adjustment cap is connected with the pressure-releasing chamber inner thread, adjusting cap by rotation makes and adjusts shade and move axially and change or set pressure release pressure.
By adopting technique scheme, the rubber body of post barrel-like structure is separated into drain chamber and Decompression valves valve pocket with pressure-releasing chamber, when making pressure release or blowdown water and Decompression valves inner piece do not contact with regard to expulsion valve external, thereby guarantee Returnning spring in Decompression valves not to be subjected to the corrosion of water quality and affect the pressure of setting.
the utility model further is set to: described pull bar outer end is provided with manual adjustment means, described manual adjustment means comprises the circle platform that is arranged on the pressure-releasing chamber cavity, non-return jump ring and knob, described circle table top is provided with the sawtooth corrugated, in described knob, corresponding sawtooth corrugated is provided with strut, described knob sleeve is connected on pull bar, and described strut coordinates with the corrugated slippage of corresponding sawtooth, described non-return jump ring is arranged on outside knob, and the non-return jump ring is fixedly connected with pull bar, when clockwise rotating knob, described strut is along sawtooth corrugated slip, driving pull bar upwards promotes, open the Decompression valves pressure release, when knob to sawtooth wave ground roll paddy is let go, described strut resets along the sawtooth corrugated under the effect of Returnning spring.By this setting, the manual adjustment means structure arranges rationally, go to the highest point relieving on sawtooth corrugated when knob, pull bar is forcing knob along sliding to original state under the inclined-plane under the effect of Returnning spring, Decompression valves is automatically reset close, thereby avoided the WATER AS FLOW MEDIUM leakage phenomenon that causes because of operate miss or reasons in structure.
The utility model also further is set to: described water draining beak is arranged on pressure-releasing chamber one side, and the outlet port of close intake tunnel.By this setting, the water draining beak position arranges rationally, and is near with the intake tunnel water outlet, and draining is convenient, works more reliable.
The utility model also further is set to: described pull bar the inner is provided with round platform, described round platform and integrated with pulling rod setting, be provided with circular groove on the outer surface of described round platform, the cavity of described rubber body is provided with the convex cone ring of annular near the bottom, described pull bar connects and fixes by convex cone ring and circular groove and consists of interlock.By this setting, pull bar is connected reliably with rubber body.
The utility model also further is set to: three sawtooth corrugateds are set on described circle platform altogether, and pitch of the laps platform center, three sawtooth corrugateds distributes evenly, three sawtooth corrugateds all arrange from low to high along clockwise direction and consist of helix structure.By this setting, quantity and the structure on sawtooth corrugated arrange rationally, make work more reliable.
The utility model also further is set to: described non-return jump ring is arc structure, and this non-return jump ring comprises that a plurality of rings establish the claw on non-return jump ring body, and described a plurality of claws and non-return jump ring body consist of cone structure.By this setting, the non-return clip spring structure arranges rationally, reliable operation.
The utility model also further is set to: described knob outer end is provided with for the jump-ring slot that the non-return jump ring is installed, described non-return jump ring is arranged in jump-ring slot, and be provided with the jump-ring slot lid in jump-ring slot, described jump-ring slot lid is plugged in jump-ring slot and with knob and consists of an integral body.By this setting, knob structure is reasonable, and the non-return jump ring is easy for installation.
The utility model also further is set to: described one-way water inlet valve comprises connection bracket, black box and anti-back flow spring, described connection bracket is arranged on the water-inlet cavity front end, and connection bracket and water-inlet cavity cavity are tightly connected, described black box is near the connection bracket setting, described anti-back flow spring one end is connected with black box, and the other end is fixedly connected with the water-inlet cavity cavity.By this setting, one-way water inlet valve structure arranges rationally, reliable operation.
The utility model has the advantages that: the utility model structure arranges rationally, the rubber body of post barrel-like structure is separated into drain chamber and Decompression valves valve pocket with pressure-releasing chamber, when making pressure release or blowdown, water does not contact with regard to expulsion valve external with the Decompression valves inner piece, thereby not being subjected to the corrosion of water quality, the Returnning spring in the assurance Decompression valves affects the pressure of setting, and the manual adjustment means of Decompression valves pull bar outer end, structure arrange rationally, and be simple in structure, reliable operation, cost of production is low.
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation;
Fig. 2 is the sectional view of A-A in Fig. 1;
Fig. 3 is the utility model embodiment's explosive view;
Fig. 4 is the structural representation of the utility model embodiment valve body;
Fig. 5 is the structural representation of the utility model embodiment knob;
Fig. 6 is the structural representation of the utility model embodiment pull bar;
Fig. 7 is the structural representation of the utility model embodiment rubber body;
Fig. 8 is the structural representation of the utility model embodiment non-return jump ring.
Embodiment
referring to Fig. 1 to Fig. 8, the disclosed a kind of electric water heater safety valve of the utility model, comprise valve body 1, be provided with water-inlet cavity 11 and pressure-releasing chamber 12 on described valve body 1, be provided with intake tunnel 13 between described water-inlet cavity 11 and pressure-releasing chamber 12, be provided with one-way water inlet valve 2 in described water-inlet cavity 11, be provided with water draining beak 121 on pressure-releasing chamber 12, be provided with Decompression valves 3 in pressure-releasing chamber 12, described Decompression valves 3 comprises rubber body 31, rubber body pressure cap 32, pull bar 33, Returnning spring 34 and adjustment cap 35, be provided with cavity 311 in described rubber body 31, described rubber body pressure cap 32 is connected with pressure-releasing chamber 12 inner threads, pull bar 33 the inners are passed rubber body pressure cap 32 and are inserted in cavity 311 and be fixedly connected with cavity 311 inwalls, described rubber body 31 is arranged to the post barrel-like structure, it is fixing that rubber body 31 edges extend out to 32 sealings of rubber body pressure cap, this rubber body pressure cap 32 outer ends arrange adjusts cap 35, described Returnning spring 34 is socketed on pull bar 33, this Returnning spring 34 the inners are connected to pull bar 33 the inners, Returnning spring 34 outer ends withstand on to be adjusted on cap 35, in the 31 top means of press seals of rubber body under the effect of Returnning spring 34 in the outlet of intake tunnel 13, described adjustment cap 35 is connected with pressure-releasing chamber 12 inner threads, adjusting cap 35 by rotation makes and adjusts cap 35 and move vertically and change or set pressure release pressure.Because the rubber body 31 of post barrel-like structure is separated into drain chamber and Decompression valves valve pocket with pressure-releasing chamber 12, when making pressure release or blowdown water and Decompression valves inner piece do not contact with regard to expulsion valve external, thereby guarantee Returnning spring in Decompression valves not to be subjected to the corrosion of water quality and affect the pressure of setting.
in order to reach the purpose that automatically resets after manually opened Decompression valves, the described pull bar of the present embodiment 33 outer ends are provided with manual adjustment means 4, described manual adjustment means 4 comprises the circle platform 41 that is arranged on pressure-releasing chamber 12 cavitys, non-return jump ring 42 and knob 43, described circle platform 41 faces are provided with sawtooth corrugated 411, the interior corresponding sawtooth of described knob 43 corrugated 411 is provided with strut 431, described knob 43 is socketed on pull bar 33, and described strut 431 coordinates with corrugated 411 slippages of corresponding sawtooth, described non-return jump ring 42 is arranged on knob 43 outsides, and non-return jump ring 42 is fixedly connected with pull bar 33, when clockwise rotating knob 43, described strut 431 is along sawtooth corrugated 411 slips, driving pull bar 33 upwards promotes, open the Decompression valves pressure release this moment, when knob 43 turns to sawtooth corrugated 411 troughs, when being sawtooth corrugated lowest part, described strut 431 411 moves and resets along the sawtooth corrugated under the effect of Returnning spring 34.
For making the utility model work more reliable, as preferably, the described water draining beak 121 of the present embodiment is arranged on pressure-releasing chamber 12 1 sides, and near the outlet port of intake tunnel 13.This technological scheme, draining is convenient, works more reliable.Described pull bar 33 the inners are provided with round platform 331, described round platform 331 is wholely set with pull bar 33, be provided with circular groove 332 on the outer surface of described round platform 331, the cavity 311 of described rubber body 31 is provided with the convex cone ring 312 of annular near the bottom, described pull bar 33 connects and fixes by convex cone ring 312 and circular groove 332 and consists of interlock.
Three sawtooth corrugateds 411 are set on described circle platform 41 altogether, and three sawtooth oblique 411 pitch of the laps platform 331 centers distribute evenly, three sawtooth corrugateds 411 all arrange from low to high along clockwise direction and consist of helix structure.
Described non-return jump ring 42 is arc structure, and this non-return jump ring 42 comprises that a plurality of rings establish the claw 421 on non-return jump ring body, and described a plurality of claws 421 consist of cone structure with non-return jump ring body.Described knob 43 outer ends are provided with for the jump-ring slot 432 that non-return jump ring 42 is installed, described non-return jump ring 42 is arranged in jump-ring slot 432, and be provided with jump-ring slot lid 44 in jump-ring slot 432, described jump-ring slot lid 44 is plugged in jump-ring slot 432 and with knob 43 and consists of an integral body.Be marked with at jump-ring slot lid 44 bearing mark that knob 43 turns clockwise.
In addition, described one-way water inlet valve 2 comprises connection bracket 21, black box 22 and anti-back flow spring 23, described connection bracket 21 is arranged on water-inlet cavity 11 front ends, and connection bracket 21 is tightly connected with water-inlet cavity 11 cavitys, described black box 22 arranges near connection bracket 21, described anti-back flow spring 23 1 ends are connected with black box 22, and the other end is fixedly connected with water-inlet cavity 11 cavitys.
The utility model is because rubber body 31 is separated into drain chamber and pressure-releasing chamber with pressure-releasing chamber 12, described rubber body 31 is drain chamber near intake tunnels 13, described rubber body 31 is pressure-releasing chamber near manual adjustment means 4, pressure-releasing chamber and water isolation, both prevent the corrosion of water quality to Returnning spring 34, improved again sealing of the present utility model.Therefore, the utility model structure arranges rationally, compact structure, simple, reliable operation, the low and long service life of cost of production.
Above-described embodiment is to specific descriptions of the present utility model; only be used for the utility model is further illustrated; can not be interpreted as the restriction to the utility model protection domain, the technician of related domain according to the content of above-mentioned model utility, the utility model is made some nonessential improvement and adjust all fall into protection domain of the present utility model within.