CN201199098Y - Drainage valve for solar energy water heater - Google Patents

Abstract

The utility model relates to an exhaust-valve of a solar water heater, pertaining to components of the solar water heater. A piston cylinder body is arranged in the inner cavity of the valve body, with a clearance between the piston cylinder body and the valve body, a water control interface is arranged at the outer port of the piston cylinder body, a piston in the piston cylinder body is connected to a piston rod, the clearance is reserved between the piston and the inner cavity of the piston cylinder, a piston rod hole is arranged at the end of the piston cylinder body and the clearance is reserved between the piston rod hole and the piston rod, the end of the valve body is the interface of the inner bladder of a water tank, a sealing cover is matched and installed on the interface of the inner bladder of the water tank and connected to the other end of the piston rod, and an upper water inlet and a lower water inlet are arranged at one side of the valve body. The exhaust-valve has simple structure and reliable property, is controlled with water pressure and convenient for making and installing and can solve the freezing problem of the pipeline of the solar water heater in winter, thereby avoiding frost cracking of the pipeline, which can affect normal use, ensuring the normal use of the solar water heater in winter and improving the service performance of the solar water heater.

Description

Solar water heater emptying valve

Technical field

The utility model relates to a kind of solar water heater emptying valve, belongs to the solar water heater accessory.

Background technology

Solar water heater has been subjected to popularization and application widely with advantages such as its convenience, safety, energy-saving and emission-reduction, but the problem that also has some blemisies in an otherwise perfect thing, the upper and lower conduit appearance of a street of solar water heater is easily frozen in the winter time, even bursting by freezing, causing it normally not use, is a great problem of being badly in need of solution at present.

Summary of the invention

The purpose of this utility model is to provide a kind of solar water heater emptying valve, and is simple in structure, and dependable performance can make the upper and lower conduit emptying of solar water heater, realizes avoiding the problem of bursting by freezing in winter pipeline once opening out hot water.Solar water heater emptying valve described in the utility model, comprise valve body, piston/cylinder, its piston/cylinder places the inner chamber of valve body, gapped between piston/cylinder and body cavity, the external port of piston/cylinder is provided with the water control interface, the piston of piston/cylinder inner chamber is connected on the piston rod, and piston and piston cylinder inner chamber are gapped, and the piston/cylinder end is provided with the piston rod hole, gapped between piston rod hole and piston rod, the end of valve body is the inner water tank interface, is fitted with seal cover above the inner water tank interface, and seal cover is connected the other end of piston rod, one side of valve body is provided with water interface up and down, and valve body is that screw thread is fixedlyed connected with piston/cylinder.

The utility model is fitted in the solar water heater uses, connect tap water pipe line by the water control interface, connect inner water tank by the inner water tank interface, connect upper and lower conduit road and breather pipe by water interface up and down, during use, by controlling the valve opening and closing on each pipeline, finish water, put hot water and emptying.

During use, can connect three-way pipe on the water interface up and down, the one tunnel is communicated with the upper and lower conduit road, and another road passes to the breather pipe of inner water tank upper air floor, is used for emptying.Certainly, also water interface up and down directly can be connected the upper and lower conduit road, set up the ventilation interface in a side of valve body again, check valve of the interface of will ventilate connection is used for emptying.

Seal cover is by conical lid, and metallic gasket, sealing gasket composition, conical lid are used for improvement startup sensitivity, the sealing property between sealing gasket improvement and inner water tank interface.Equally, on the piston medial surface, also be provided with sealing gasket, improve the sealing between piston and piston rod bore ends.

Inner water tank interface end at valve body is established connecting thread, makes things convenient for when using and the attended operation of water tank.

Being designed to trapezoidally in the piston rod hole of piston cylinder inner chamber, on the sidewall in piston rod hole through hole being arranged, is in order to improve the startup sensitivity of piston.

The utility model is simple in structure, making, easy installation and reliable, control by hydraulic pressure, stable performance, guaranteed the reliability that piston/cylinder also need be incubated, solar water heater also can normally be used in the winter time, solar water heater has been realized once opening out hot water, avoid the problem of water lines bursting by freezing, improved the serviceability of solar water heater.

Description of drawings:

The structural representation of Fig. 1 the utility model embodiment 1

Fig. 2 the utility model embodiment 1 pipeline connection diagram in actual applications

Among the figure: 1, inner water tank interface 2, inner bag interface thread 3, valve body 4, body cavity 5, piston/cylinder 6, the water interface 7 up and down, connecting thread 8, internal thread 9, pin hole 10, conical lid 11, metallic gasket 12, sealing gasket 13, piston rod 14, through hole 15, piston rod hole 16, sealing gasket 17, piston 18, piston cylinder inner chamber 19, water control interface 20, blast pipe 21, breather pipe 22, inner water tank 23, three-way pipe 24, upper and lower conduit road 25, mix water valve 26, shower head 27, water control pipeline 28, magnetic valve 29, control valve 30, tap water pipe line

The specific embodiment

The utility model is described in further detail in conjunction with the foregoing description figure accompanying drawing

As shown in Figure 1, solar water heater emptying valve described in the utility model, its piston/cylinder 5 places the inner chamber of valve body 3, piston/cylinder 5 is connected by screw thread 7 with valve body 3,4 of piston/cylinder 5 and body cavities are gapped, the external port of piston/cylinder 5 is a water control interface 19, water control interface 19 is established and is connected internal thread 8, the piston 17 of piston cylinder inner chamber 18 is connected on the piston rod 13, and piston 17 is gapped with piston cylinder inner chamber 18, and the end of piston/cylinder 5 is provided with piston rod hole 15,13 in piston rod hole 15 and piston rod are gapped, the end of valve body 3 is an inner water tank interface 1, and (seal cover is by conical lid 10, metallic gasket 11 to be fitted with seal cover on the water tank inner joint 1, sealing gasket 12 is formed), seal cover is connected the other end of piston rod 13, and inner water tank interface 1 end of valve body 3 is provided with inner bag connecting thread 2, and a side of valve body 3 is provided with water interface 6 up and down.

As shown in Figure 2, in application in practice, the utility model connects water control pipeline 27 by water control interface 19 and by magnetic valve 28, control valve 29 is communicated with running water pipe 30.Connect inner water tank 22 by inner water tank interface 1, be threaded, easy to operate, connect threeways 23, a tunnel by water interface 6 up and down and connect upper and lower conduit road 24, another road is communicated to the breather pipe 21 of inner water tank 22 upper air floor.Water control pipeline 27, tap water pipe line 30, upper and lower conduit road 24 is respectively equipped with control valve 29, and magnetic valve 28 mixes water valve 25, in the use, regulates getting final product as required.

Operation principle

When last water and heat-obtaining water, open running water control valve 29, magnetic valve 28, running water enters piston/cylinder inner chamber 18 by water control visitor road 27 to water control interface 19, owing to be subjected to the effect of tap water pressure, make on the piston rod 13 after piston 17 is stressed and move, piston 17 is with 15 shutoff of piston rod hole, seal cover is opened the path of inner water tank 22 and inner water tank interface 1 then by jack-up simultaneously.At this moment, mix water valve 25 and put at last water level, running water will be by mixing water valve 25, upper and lower conduit road 24 is respectively through breather pipe 21 and body cavity 4, and 1 pair of inner water tank of inner water tank interface 22 injects cold water, after water is full, water in magnetic valve 28 automatic cut-offs also can adopt the artificial water of going up of backflow tubular type.When picking and placeing hot water as need, can put at the heat-obtaining water level mixing water valve 25, the hot water of inner water tank 22 just passes through inner water tank interface 1, body cavity 4, and upper and lower conduit road 24 is flowed out through mixing water valve 25, thereby can be obtained hot water from shower head 26.When needing emptying in the winter time, control valve 29 is closed, will mix water valve 25 and open to mixed water level and put, because upper and lower conduit road 24 is by three-way pipe 23, breather pipe 21 communicates with the air layer on inner water tank top, the water emptying rapidly in water in the upper and lower conduit road 24 and the water control pipeline 27.Piston 17 falls because of the active force that loses running water, and seal cover cuts off the path of inner water tank and inner water tank interface 1, and the hot water of inner water tank 22 is in hold mode, upper and lower conduit road 24 and water control pipeline 27 all are in emptying state, reach the purpose of evacuation and anti-freezing.

Claims (3)

1. solar water heater emptying valve, comprise valve body, piston/cylinder, it is characterized in that piston/cylinder places the inner chamber of valve body, gapped between piston/cylinder and body cavity, the external port of piston/cylinder is provided with the water control interface, the piston of piston/cylinder inner chamber is connected on the piston rod, piston and piston cylinder inner chamber are gapped, and the end of piston/cylinder is provided with the piston rod hole, and be gapped between piston rod hole and piston rod, the end of valve body is the inner water tank interface, be fitted with seal cover on the inner water tank interface, seal cover is connected the other end of piston rod, and a side of valve body is provided with water interface up and down.

2. require described solar water heater emptying valve according to right 1, it is characterized in that body cavity connects inner water tank upper air layer by pipeline.

3. require described solar water heater emptying valve according to right 1, the piston rod hole that it is characterized in that the piston cylinder inner chamber is a trapezoidal shape, on the sidewall in piston rod hole through hole is arranged.

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