CN2434499Y - Pipeline drainage valve for solar water heater - Google Patents

Abstract

The utility model relates to a pipeline drainage valve for a solar water heater. The pipeline drainage valve for a solar water heater is mainly characterized in that a one-way valve is arranged at one end of a valve body. An electromagnetic valve is arranged at the other end of the valve body. A self-locking mechanism is arranged in the valve body between the one-way valve and the electromagnetic valve. Under the control of an externally arranged circuit, a one-way spool valve can be opened and closed by the electromagnetic valve through a striking core and the self-locking mechanism. Easy emptying can be realized. Hot water can be obtained as soon as water is discharged. The utility model can be connected to a water inlet and a water outlet of a water tank. The pipeline drainage valve for a solar water heater can be matched with various solar energy water heaters.

Description

The solar water heater pipe line evacuation valve

The utility model relates to the not solar water heater pipe line evacuation valve used of sewer emptying of a kind of solar water heater.

Solar water heater places outdoor roof usually, by long upper and lower conduit cold water is injected water tank or hot water is introduced the bathroom.When using the gap, always in pipeline, leave a pipe water like this because the heat insulation effect of pipeline is generally relatively poor, winter outside air temperature be lower than 0 when spending, the water in the pipeline will freeze and freeze stifled, bursting by freezing pipeline, causes water heater to use.Even at ordinary times, behind the use hot water, the hot water in the pipe also turns cold heat radiation a moment later.Again pipe cold water, very an inconvenience when reusing.At present, at top problem, people design device miscellaneous and are used for the surplus water in the lower pipeline in the emptying.As patent 98206260 and patent 98244153 all is to utilize this physical principle of siphonage of pipeline, in water-heater water tank (or outside) the inverted U pipe is set, and at the top of inverted U pipe one valve is set, air inlet during as the pipeline emptying.When after emptying, using hot water, need earlier cold water to be filled pipeline, again hot water is drawn down by the indoor valve of certain program switch.Operation is trouble very.And for example patent 98227989 is to adorn a solenoid valve and automatic exhaust-valve at water intake, controls the turnover of the water in the water-heater water tank by solenoid valve, also exists the long-term charged work of solenoid valve, causes shortcomings such as long-time operational safety is poor, working life is long.

The purpose of this utility model be to provide use simple, safe and reliable, to use a water outlet be exactly hot water at every turn, avoids general exhaust-valve to begin to have a kind of solar water heater pipe line evacuation valve of one section cold water.

The purpose of this utility model is achieved through the following technical solutions: a kind of solar water heater pipe line evacuation valve, comprise the water inlet and outlet interface on the valve body, valve body one end that it is characterized in that pipe line evacuation valve is an one-way valve direct and that solar water heater water tank water inlet and outlet interface joins, the other end is a solenoid valve, valve body between one-way valve and the solenoid valve is provided with intake interface, be provided with push rod, isolating film, pressing plate and self-lock switch in the valve body, solenoid valve is by the control circuit control of peripheral hardware; The one-way valve of valve body one end comprises that the spring and being screwed on the valve body of valve seat, the unidirectional guiding valve on the valve seat, the unidirectional guiding valve of roof pressure of valve body is connected as a single entity with valve body, and parcel form is to the not-go end shell of guiding valve, spring and valve seat; Isolating film in the valve body becomes valve body inner cavity seal isolation after pressing plate is fixing pool and no pool two large divisions; push rod is made of push rod leading portion and push rod back segment two-part; the push rod leading portion has placed the pool; one end hermetically passing isolating film of push rod leading portion and with the socket of push rod back segment; the push rod back segment passes pressing plate; the hole is placed in the endoporus of self-lock switch; self-lock switch places the axial bore of solenoid valve skeleton; unidirectional guiding valve in the other end of push rod leading portion and the one-way valve touches; be provided with in the axial bore of solenoid valve skeleton and hit core; hit and be nested with Returnning spring on the core, hit core and Returnning spring warp and protect with the position-limiting cover that the solenoid valve skeleton connects as one.The control circuit of the utility model solenoid valve peripheral hardware is made up of power supply, vibrator circuit, booster circuit and accumulator, and it can and be stored in the big electric capacity the tens of volts of low-voltage direct electric boost, uses for the valve body electromagnetic coil.One-way valve end with valve body in actual the use is loaded on water tank intake-outlet place, and spring is pressed on valve seat with unidirectional guiding valve, and the pressure that the water tank inner storing water produces and the elastic force of spring are adjacent to unidirectional valve seat fully with unidirectional guiding valve, with water-stop at water tank and valve body internal check valve end.Intake interface can be external in water tank ease head piece or adorn an one-way valve (go side places atmosphere) with pipeline on the valve body, the preceding elongated segment of push rod just has been closely attached on the unidirectional guiding valve of one-way valve, the front end and back end rigidity of push rod is nested with continuous, self-lock switch one action, bar bar leading portion backs down unidirectional guiding valve, water in the water tank just can flow to the go side from the not-go end of one-way valve, and the water of water tank flows out.Move as self-lock switch, the push rod front end will return to original position again, and unidirectional guiding valve resets under the effect of hydraulic pressure and one-way valve inner spring, and the water in the water tank is closed.The purpose of pipeline emptying is discharged, is reached in suction port air inlet simultaneously, the water in the pipeline downwards by water nozzle by deadweight.When normally going up water, because the spring force that water tank hydraulic pressure is little and one-way valve is interior is light, water inlet is directly backed down unidirectional guiding valve and is entered water tank, and water is closed inlet valve after expiring, opened water nozzle, and air is directly entered in the pipe by suction port, and the water in the pipeline is discharged from water nozzle.Water in the water tank is isolated by one-way valve, stays in the water tank.When electromagnetic coil energising back produces magnetic field, driving is hit core and is hit self-lock switch, the purpose that self-lock switch is reached open or close.Hit core and under the action of reset spring of electromagnetic coil outage back, reset, prepare bump next time by self.Electromagnetic coil is by the big capacitor discharge power supply of peripheral hardware control circuit, and the endurance is short, can not make electromagnetic coil and hit the core heating, thereby make exhaust-valve work more reliable.

The utility model compared with prior art its advantage is: fully the realization on the meaning light emptying, the peripheral circuit switch need only be pressed and just hot water can be obtained, just can close the surplus water of the automatic emptying of exhaust-valve after pressing once more, the valve body part can directly be imbedded in the water tank wall, water in the one-way valve is incubated, prevent special cold weather in severe winter, exhaust-valve is freezed to death; Also can be connected water tank intake-outlet place, can be used with various solar water heaters.

Now further specify the utility model in conjunction with the accompanying drawings and embodiments.

Accompanying drawing 1 is the utility model valve body structure schematic representation;

In the accompanying drawing: the 1st, not-go end shell, the 2nd, spring, the 3rd, unidirectional guiding valve, the 4th, push rod leading portion, the 5th, not-go end, the 6th, intake interface, the 7th, isolating film, the 8th, pressing plate, the 9th, push rod back segment, the 10th, solenoid valve skeleton, the 11st, electromagnetic coil, the 12nd, position-limiting cover, the 13rd, hit core, the 14th, Returnning spring, the 15th, self-lock switch, the 16th, upper and lower conduit interface, the 17th, valve body.

Further specify the utility model in conjunction with the accompanying drawings and embodiments, in the utility model, not-go end shell 1 is threaded onto the not-go end 5 of valve body 17, and built-in unidirectional guiding valve 3 and spring 2 constitute one-way valve, nature water can enter from the upper and lower conduit 16 of valve body 17, and backs down unidirectional guiding valve 3 and enter in the not-go end shell 1 by the gap.Water in the not-go end shell 1 is because unidirectional guiding valve 3 is pressed to the unidirectional valve seat part of valve body 17 by spring 2 and water tank hydraulic pressure, and both seal (being Ceramic mill disc), and water can not enter into upper and lower conduit interface 16.Water from upper and lower conduit interface 16 turnover can enter into intake interface 6, and two kinds of processing modes are arranged: one enters water tank by intake interface 6 external pipelines from ease stream pipe, and two end by intake interface 6 external one-way valves, can not flow out.Pressing plate 8 is fixed on isolating film 7 in the cavity of valve body 17, and cavity isolation is become to have pool and no pool, and self-lock switch 15 places in the cavity of solenoid valve skeleton 10, and push rod back segment 9 stretches in self-lock switch 15 endoporus.Electromagnetic coil 11 is wrapped on the solenoid valve skeleton 10.Hit core 13 cover upper reset springs 14 and place solenoid valve skeleton 10 endoporus, hit core position-limiting cover 12 and be connected with solenoid valve skeleton 10, core 13 going-back positions are hit in restriction.The endoporus that push rod leading portion 4 passes valve body 17 has just contacted with unidirectional guiding valve 3 or is slightly gapped.The entire mechanism working procedure: water backs down unidirectional guiding valve 3 by one-way valve by upper and lower conduit interface 16 and enters water tank when going up water, as water on stopping, open water nozzle, hydraulic pressure in the upper and lower conduit interface 16 will be lower than the hydraulic pressure in the one-way valve, unidirectional guiding valve 3 is adjacent to unidirectional valve seat part under the effect of spring 2 and hydraulic pressure, water can not be flow backwards.When the peripheral hardware control circuit is connected electromagnetic coil 11, electromagnetic coil 11 pullings are hit core 13 and are impacted self-lock switch 15, self-lock switch 15 makes push rod leading portion 4 and push rod back segment 9 move forward a displacement and locking, push rod leading portion 4 backs down unidirectional guiding valve 3, and water flows to the upper and lower conduit interface 16 from valve body 17 not-go ends.After electromagnetic coil 11 is connected once more, finish once action again, self-lock switch 15 releases, push rod leading portion 4 is return, and unidirectional guiding valve 3 is resetted by spring 2 and hydraulic pressure, and water is closed.Air is entered by intake interface 6, and the water in the pipeline is by the water nozzle emptying.

Vibrator circuit in the utility model peripheral hardware control circuit produces vibration with low-voltage DC, boost by the transformer in the booster circuit, pass through the charging circuit rectification after boosting again, charge to electric capacity, be full of the back show state, after going into to press the switch in the discharge circuit, capacitor discharge is to electromagnetic coil work.Charging circuit can feed back to vibrator circuit with charged state, with decision failure of oscillation or starting of oscillation, is convenient to economize on electricity.

Claims (6)

1, a kind of solar water heater pipe line evacuation valve, comprise the water inlet and outlet interface on the valve body, valve body one end that it is characterized in that pipe line evacuation valve is an one-way valve direct and that solar water heater water tank water inlet and outlet interface joins, the other end is a solenoid valve, valve body between one-way valve and the solenoid valve is provided with intake interface, be provided with push rod, isolating film, pressing plate and self-lock switch in the valve body, solenoid valve is by the control circuit control of peripheral hardware.

2, solar water heater pipe line evacuation valve according to claim 1, it is characterized in that valve body, the one-way valve of one end comprises the valve seat on the valve body, the unidirectional guiding valve on the valve seat, the spring of the unidirectional guiding valve of roof pressure and be screwed on the valve body be connected as a single entity with valve body and parcel form to the not-go end shell of guiding valve, spring and valve seat.

3, solar water heater pipe line evacuation valve according to claim 1 is characterized in that isolating film in the valve body becomes valve body inner cavity seal isolation pool and no pool two large divisions are arranged after pressing plate is fixing.

4, solar water heater pipe line evacuation valve according to claim 1, it is characterized in that push rod is made of push rod leading portion and push rod back segment two-part, the push rod leading portion has placed the pool, one end hermetically passing isolating film of push rod leading portion and with the socket of push rod back segment, the push rod back segment passes in the endoporus that plate hole is placed on self-lock switch, and self-lock switch places the axial bore of solenoid valve skeleton.

5, solar water heater pipe line evacuation valve according to claim 1 is characterized in that the other end of push rod leading portion and the unidirectional guiding valve in the one-way valve touch.

6, solar water heater pipe line evacuation valve according to claim 1; it is characterized in that being provided with in the axial bore of solenoid valve skeleton and hit core; hit and be nested with Returnning spring on the core, hit core and Returnning spring warp and protect with the position-limiting cover that the solenoid valve skeleton connects as one.