Novel foot valve
Technical field
The present invention relates to the control valve technical field, particularly a kind of Novel foot valve.
Background technique
At present, high-pressure wash is widely used in industries such as chemical industry, thermal power generation, oil fields, but traditional high-pressure cleaning device is to be connected to the high-pressure spray nozzle from jetting machine by high-pressure rubber pipe, control switch is located on jetting machine, like this when the equipment that need to clean and main frame when far, control very inconvenient, so need when using the conventional high-tension cleaning equipment staff of high-pressure service pump machine switch place's outfit, and to keep two people in time to communicate by letter, so not only wasted human and material resources, and inconvenient to use also dangerous.
Existing foot valve complex structure, rate of breakdown is large, and part is numerous, and difficulty of processing is large, complex process, cost is high, and heaviness and reliability are low, and usually can not bear high pressure, and Applicable scope is little.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide a kind of runner simple, can bear high pressure, reliable Novel foot valve easy and simple to handle.
Purpose of the present invention is achieved through the following technical solutions:
Novel foot valve, it comprises base, be arranged on the valve body on base and be arranged on foot treadle on valve body, be provided with the intake-outlet A and the intake-outlet B that are connected in valve body, and intake-outlet A and intake-outlet B are positioned at same straight line, divide the both sides that are located at valve body, also be provided be connected spool mouth and flow-off in valve body, and spool mouth and flow-off also are positioned at same straight line, divide the both sides that are located at valve body, spool mouth and flow-off are all vertical with intake-outlet B with intake-outlet A and be communicated with, and described intake-outlet A and intake-outlet B all are connected with the water inlet and outlet joint.
be provided with spool in the spool mouth, the rearward end of spool is provided with push rod A, push rod A stretches out outside valve body, seal by back-up ring and O type circle between push rod A and valve body, be provided with the valve seat that coordinates with spool in flow-off, be provided with valve core spring between spool and valve seat, valve core spring one end presses on spool, the other end presses on valve seat, seal by back-up ring and O type circle between valve seat and valve body, the flow-off end is connected with overflow adapter, overflow adapter is connected with spill pipe, spill pipe inside is provided with and the contacted buffer stopper of overflow adapter, between described overflow adapter and valve body, all seal by O type circle between overflow adapter and spill pipe.
The top of valve body is provided with support plate, and foot treadle is articulated on support plate, and the bottom of foot treadle is connected with push rod B, matches with push rod A and contact in the end of push rod B.
The bottom of described foot treadle is provided with jogger hole, and push rod B is arranged in this jogger hole and runs through this hole, and push rod B is provided with bump with the end that push rod A contacts, and the other end of push rod B is set with nut, is provided with damping spring between push rod B bump and foot treadle.
Described base is provided with limit structure, and described limit structure is positioned at the below of foot treadle.
Described limit structure is the outer-hexagonal bolts that is that is arranged on base.
Also be provided with guard shield on described base, the top of guard shield is provided with portable handle.
The both sides that described guard shield inside is positioned at valve body are respectively equipped with front screen and backboard, and front screen is positioned at the side that valve body is provided with foot treadle outward, and backboard is positioned at the side that valve body is provided with spill pipe outward.
The present invention has the following advantages:
Control when 1, the present invention is applicable to high-pressure wash, foot valve are connected on the pipeline of high-pressure wash, realize the closely control work of high-pressure wash by foot valve, make a people can complete high-pressure wash work, have saved human and material resources.
2, the present invention is simple in structure, runner is simple, compares traditional foot valve and has reduced number of spare parts, has reduced difficulty of processing, processing cost, and is lightly nimble, is easy to carry.
3, control is safe and reliable, easy and simple to handle.
Description of drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of valve body of the present invention
In figure, 1-base, 2-valve body, 3-foot treadle, 4-intake-outlet A, 5-intake-outlet B, 6-spool mouth, 7-flow-off, 8-water inlet and outlet joint, 9-spool, 10-push rod A, 11-back-up ring, 12-O type circle, 13-valve seat, the 14-valve core spring, 15-overflow adapter, 16-spill pipe, 17-buffer stopper, the 18-support plate, 19-push rod B, 20-damping spring, 21-limit structure, the 22-guard shield, 23-handle, 24-front screen, 25-backboard.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing:
as Fig. 1, shown in Figure 2, Novel foot valve, it comprises base 1, be arranged on valve body 2 and the foot treadle 3 that is arranged on valve body 2 on base 1, be provided with the intake-outlet A4 and the intake-outlet B5 that are connected in valve body 2, and intake-outlet A4 and intake-outlet B5 are positioned at same straight line, divide the both sides that are located at valve body 2, also be provided be connected spool mouth 6 and flow-off 7 in valve body 2, and spool mouth 6 also is positioned at same straight line with flow-off 7, divide the both sides that are located at valve body 2, spool mouth 6 and flow-off 7 are all vertical with intake-outlet B5 with intake-outlet A4 and be communicated with, described intake-outlet A4 and intake-outlet B5 all are connected with water inlet and outlet joint 8.
be provided with spool 9 in spool mouth 6, the rearward end of spool 9 is provided with push rod A10, push rod A10 stretches out valve body 2 outsides, 2 of push rod A10 and valve bodies seal by back-up ring 11 and O type circle 12, be provided with the valve seat 13 that coordinates with spool 9 in flow-off 7, be provided with valve core spring 14 between spool 9 and valve seat 13, valve core spring 14 1 ends press on spool 9, the other end presses on valve seat 13, 2 of valve seat 13 and valve bodies seal by back-up ring 11 and O type circle 12, flow-off 7 ends are connected with overflow adapter 15, overflow adapter 15 is connected with spill pipe 16, spill pipe 16 inside are provided with and the contacted buffer stopper 17 of overflow adapter 15, 2 of described overflow adapter 15 and valve bodies, 16 of overflow adapter 15 and spill pipes all seal by O type circle 12.
The top of valve body 2 is provided with support plate 18, and foot treadle 3 is articulated on support plate 18, and the bottom of foot treadle 3 is connected with push rod B19, matches with push rod A10 and contact in the end of push rod B19.
The bottom of described foot treadle 3 is provided with jogger hole, push rod B19 is arranged in this jogger hole and runs through this hole, push rod B19 is provided with bump with the end that push rod A10 contacts, and the other end of push rod B19 is set with nut, is provided with damping spring 20 between the bump of push rod B19 and foot treadle 3.
Described base 1 is provided with limit structure 21, and described limit structure 21 is positioned at the below of foot treadle 3.
Described limit structure 21 is for being arranged on the outer-hexagonal bolts that is on base 1.
Also be provided with guard shield 22 on described base 1, the top of guard shield 22 is provided with portable handle 23.
The both sides that described guard shield 22 inside are positioned at valve body 2 are respectively equipped with front screen 24 and backboard 25, and front screen 24 is positioned at the outer side that is provided with foot treadle 3 of valve body 2, and backboard 25 is positioned at the outer side that is provided with spill pipe 16 of valve body 2.
Working procedure of the present invention is as follows: high pressure water enters from intake-outlet A4, intake-outlet A4 is water intake, when foot treadle 3 is operated, foot treadle 3 promotes push rod A10 by push rod B19, and then promotion spool 9 moves to flow-off 7 directions, make spool 9 and valve seat 13 closures, the high pressure water that flows into from intake-outlet A4 is flowed out by intake-outlet B5 after spool 9, intake-outlet B5 is water outlet, when foot treadle 3 unclamps, spool 9 is translation backward under the effect of valve core spring 14, and spool 9 separates with valve seat 13, and high pressure water is from flow-off 7 overflows; High pressure water also can flow into from intake-outlet B5, is flowed out by intake-outlet A4, and its working principle is identical with the above.