CN110748675B - Multipurpose valve system for pressure-bearing water tank water heater - Google Patents

Multipurpose valve system for pressure-bearing water tank water heater Download PDF

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Publication number
CN110748675B
CN110748675B CN201911000911.3A CN201911000911A CN110748675B CN 110748675 B CN110748675 B CN 110748675B CN 201911000911 A CN201911000911 A CN 201911000911A CN 110748675 B CN110748675 B CN 110748675B
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China
Prior art keywords
leakage
water
water tank
pressure
pipeline
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CN201911000911.3A
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CN110748675A (en
Inventor
王胜平
黄虎胜
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Hangzhou Hongyan Pipeline System Science & Technology Co ltd
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Hangzhou Hongyan Pipeline System Science & Technology Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/105—Three-way check or safety valves with two or more closure members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0473—Multiple-way safety valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • F16K17/196—Equalising valves predominantly for tanks spring-loaded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

The invention discloses a multipurpose valve system for a pressure-bearing water tank water heater, which can ensure the constant pressure of a water tank for a long time, and can release the pressure of an elevated part into an external net when the water tank is heated and the water expansion pressure in the water tank is elevated. The multipurpose valve system is provided with a built-in one-way device, a built-in leakage device, a built-in back-suction device and a built-in back-suction device, wherein the built-in one-way device ensures that water flows to the water tank only under pressure, the built-in leakage device discharges water and relieves pressure under the pressure exceeding the pressure born by the water tank and a pipe network, and the built-in back-suction device prevents the water tank from flowing into the pipe network to cause the water tank to lose pressure and suck flat after the water is cut off from the outer network.

Description

Multipurpose valve system for pressure-bearing water tank water heater
Technical Field
The invention relates to the field of valve control, in particular to a multipurpose valve system for a pressure-bearing water tank water heater.
Background
The water heater in the market at present has a lot of styles, and most of the water heater is a pressure-bearing water heater, and the water tank liner is made of stainless steel or enamel. However, in the daily hot water using process, the water heater is repeatedly heated/cooled, the water tank is repeatedly expanded with heat and contracted with cold, and the long-term use of the water tank causes the stress fatigue of the inner container, so that the service life is influenced.
The patent specification with publication number CN 101907188A discloses an automatic increasing and decreasing pressure valve of a pressure-bearing water tank of a water heater, a direct current motor is connected with an electronic controller through a wire, the electronic controller is connected with a water valve water flow switch through a wire, an output shaft of the direct current motor is connected with a pressure cap below the direct current motor, a pressure claw is arranged at the bottom of the pressure cap, a ceramic plate with a groove connected with the pressure claw is arranged at the bottom of the pressure claw, a ceramic plate with a four-hole is arranged at the bottom of the ceramic plate with a groove, and the ceramic plate with a groove can rotate relative to the ceramic plate with a four-hole. Through the configuration, the pressure in the pressure-bearing water tank can be automatically regulated under the action of the electronic controller by the technology of the patent, so that the purpose of automatic pressurization and pressure relief of the pressure-bearing water tank can be achieved, and the service life of the water tank is prolonged.
The patent specification with the publication number of CN 101261048A discloses a pressure-relief emptying system of a pressure-bearing solar water heater, which consists of a water tank, a water supply pipe, a water drain pipe, a multi-way regulating valve, a one-way valve, a negative pressure valve and a water nozzle, wherein the multi-way regulating valve is connected between the water nozzle and the water supply pipe, between the water outlet pipe and the water supply pipe, and between the water outlet pipe and the water supply pipe, the multi-way regulating valve is provided with four interfaces which are respectively connected with the water supply pipe, the water drain pipe and the water nozzle; the water supply pipe and the water drain pipe are respectively connected with a water inlet and a water outlet of a water tank of the solar water heater, a one-way valve is arranged on the water supply pipe, and a negative pressure valve is arranged on the water tank; the multidirectional regulating valve has an emptying function, and the multidirectional regulating valve is used for completing water feeding, water draining and water emptying, so that consumption of water pipes, connectors and the like is reduced, the installation cost is reduced, the use is more convenient, the water draining of a water draining pipe is realized, and the freezing blockage and cold water draining conditions are reduced.
The technology of the patent still needs to be manually adjusted to control the pressure relief and the emptying of the water tank, and the self-adaptive adjustment of the valve according to the water pressure state in the water tank is not realized.
Disclosure of Invention
In view of the shortcomings in the art, the invention provides a multipurpose valve system for a pressure-bearing water tank water heater, which can ensure constant pressure of a water tank for a long time, and can release the pressure of an elevated part into an external network when the water tank is heated and the water expansion pressure in the water tank is elevated. The multipurpose valve system has one built-in one-way device to ensure water flow to the water tank only under pressure, one built-in leakage device to discharge water and release pressure under pressure exceeding the pressure born by the water tank and pipe network, and one built-in back suction device to prevent water from flowing into pipe network to result in water tank decompression and suction flattening after the water is cut off from the outer network.
A multipurpose valve system for a pressurized water tank water heater including a water tank and a water inlet pipe connected to a water inlet of the water tank, the multipurpose valve system comprising:
the first limiting ring and the second limiting ring are fixed on the inner wall of the water inlet pipeline and are sequentially arranged along the water inlet direction, and the joint of the first limiting ring and the second limiting ring and the inner wall of the water inlet pipeline is sealed;
the guide rod is nested with the first limit ring and can move along the axial direction of the first limit ring;
the valve rod is axially arranged along the water inlet pipeline, one end of the valve rod is fixedly connected with the guide rod, and the other end of the valve rod circumferentially protrudes to form a first valve plate;
The sleeve is sleeved on the valve rod, can move along the valve rod and is limited by the first limiting ring and the second limiting ring, one end of the sleeve, which is close to the first limiting ring, is reduced in diameter, a first sealing ring is sleeved on the sleeve, a groove is formed in the middle of one end of the sleeve, which is close to the second limiting ring, and a second sealing ring is fixedly arranged on the side wall, which is close to the opening, of the groove;
The inner leakage spring is sleeved on the valve rod and positioned in the groove, one end of the inner leakage spring is abutted with the bottom of the groove, and the other end of the inner leakage spring is abutted with the first valve plate; under the pushing of the internal leakage spring, the first valve plate is tightly pressed against the second sealing ring.
The workflow of the multipurpose valve system is as follows:
The water inlet process of the water tank comprises the following steps: tap water enters the multipurpose valve system along the water inlet pipeline, pushes away the first sealing ring and the sleeve under the action of tap water pressure, and further drives the valve rod and the guide rod to axially move along the first limiting ring due to the pushing action of the internal leakage spring on the first valve plate; tap water continuously enters the water tank, and water supplementing is smoothly completed. When the running water of the outer net is cut off, the water pressure of the water tank directly acts on the sleeve, and the sleeve is pushed outwards, so that the first sealing ring is extruded at the first limiting ring to realize sealing at the first limiting ring, and the water is ensured not to flow backwards into the outer net.
Internal pressure leakage process in the water tank: after the water tank is filled with water, the pressure in the water tank is the same as the pressure of the external net, and when the heating system in the water tank is started, the water in the water tank is heated to expand, and the sleeve is pushed outwards to extrude the first sealing ring at the first limiting ring, so that the sealing at the first limiting ring is realized. The pressure of the internal leakage spring can be set according to specific requirements, the internal leakage spring is set to be 0.35Mpa under the condition that the tap water pressure is 0.3 Mpa. After the water expansion, the pressure of the water tank is increased, when the pressure exceeds 0.35Mpa, the first valve plate is jacked up to be separated from the second sealing ring, meanwhile, the first valve plate drives the valve rod and the guide rod to axially and outwards move along the first limiting ring, the residual water after expansion enters the groove, and then the residual water directly enters the outer net through gaps among the sleeve, the valve rod and the guide rod, so that the maximum pressure of the water tank is ensured to be 0.35Mpa.
Preferably, the inner diameter of the groove is larger than the caliber of the top end of the groove, so that the limiting effect on the second sealing ring can be achieved, and the second sealing ring is ensured not to be separated from the groove.
Preferably, the positive pressure of the internal leakage spring is set to be 0.3-0.35 MPa.
Preferably, the side of the water inlet pipeline is provided with a leakage device, which comprises:
one end of the leakage pipeline is a water inlet end and is communicated with the side surface of the water inlet pipeline, the other end of the leakage pipeline is a sealing end, and a water outlet is arranged on the side surface of the leakage pipeline;
the leakage rod is arranged in the leakage pipeline, one end of the leakage rod penetrates through the sealing end and extends out of the sealing end to be inserted into the handle, and the other end of the leakage rod circumferentially protrudes to form a second valve plate;
One end of the handle is hinged with the outer side of the sealing end and can be lifted to drive the leakage rod;
the third sealing ring is fixedly arranged on the inner wall of the leakage pipeline and is close to the water inlet end;
The leakage spring is sleeved on the leakage rod and positioned in the leakage pipeline, one end of the leakage spring is abutted against the inner side of the sealing end, and the other end of the leakage spring is abutted against the second valve plate; and under the pushing of the leakage spring, the second valve plate is tightly pressed against the third sealing ring.
The leakage device is mainly used for the pressure leakage process in the water tank: when the tap water pressure of the outer pipe network exceeds the maximum bearing pressure (assumed to be 0.75 Mpa) of the pipe network and the water tank, the pressure exceeding 0.75Mpa is assumed to be set to be 0.75Mpa by the leakage spring, the second valve plate is pushed away by the pressure exceeding 0.75Mpa to be separated from the third sealing ring, and meanwhile, the second valve plate drives the leakage rod to push the handle outwards, so that the handle rotates around the hinged position, redundant water enters the leakage pipeline, and finally, the water tank and the pipe network are protected from bursting by being directly discharged from the leakage port.
The leakage device can also drive the leakage rod and the first valve plate to leave the third sealing ring by manually pulling the handle, so that water in the water tank and the water inlet pipeline enters the leakage pipeline, and finally is directly discharged from the water outlet.
Preferably, the inner diameter of the leakage pipeline is larger than the caliber of the water inlet end, so that the third sealing ring can be limited, and the third sealing ring is prevented from being separated from the leakage pipeline.
Preferably, the positive pressure of the leakage spring is set to 0.7-0.75 MPa.
Preferably, the side of the water inlet pipeline is further provided with a back suction device, which comprises:
one end of the reverse suction pipeline is communicated with the side surface of the water inlet pipeline, and the other end of the reverse suction pipeline is an air inlet end communicated with the atmosphere;
the fourth sealing ring is fixedly arranged on the inner wall of the inverted straw and close to the air inlet end;
The pressurizing spring is arranged in the back suction pipeline, one end of the pressurizing spring is abutted against the outer surface of the side wall of the water inlet pipeline, which corresponds to the back suction pipeline, and the other end of the pressurizing spring is abutted against the third valve plate; and under the pushing of the pressurizing spring, the third valve sheet is tightly pressed against the fourth sealing ring.
The back suction device is mainly used for the pressure boosting process in the water tank: the water tank of the house with smaller external net water pressure or multiple layers is high in position, the water consumption of the water point at the lowest layer is large, the water supplementing is insufficient, and the water tank is easy to absorb flat. After the negative pressure is formed in the water tank, the third valve plate is jacked up under the action of atmospheric pressure and separated from the fourth sealing ring, air directly enters the water tank, the pressure of the water tank is ensured not to be reduced any more, the water tank is not sucked flat, and water in the water tank cannot flow out and be lost due to the action of the negative pressure.
Preferably, the inner diameter of the inverted suction pipeline is larger than the caliber of the air inlet end, so that the limiting effect on the fourth sealing ring can be achieved, and the fourth sealing ring is ensured not to be separated from the inverted suction pipeline.
Compared with the prior art, the invention has the main advantages that:
(1) When the water tank is heated, the water expansion pressure in the water tank is increased, and the pressure of the increased part can be discharged into the outer net;
(2) The multipurpose valve system is provided with a built-in one-way device, and ensures that water flows only to the water tank under pressure;
(3) The multipurpose valve system is provided with a built-in overpressure pressure relief device, and is used for draining and relieving pressure under the pressure exceeding the pressure born by the water tank and the pipe network;
(4) The multipurpose valve system is provided with a built-in back suction device, and after the water is cut off from the external network, the water in the water tank is prevented from flowing into the pipe network to cause the water tank to lose pressure and suck flat.
Drawings
FIG. 1 is a schematic diagram of a multipurpose valve system according to an embodiment, wherein:
A-unidirectional internal leakage device B-overpressure external leakage device C-back suction device
D-water tank 1-guide rod 2-first sealing ring
3-Valve rod 4-internal leakage spring 5-second sealing ring
6-A first limit ring 7-a second limit ring 8-a first valve plate
9-Handle 10-drain 11-leakage spring
12-Second valve plate 13-third sealing ring 14-booster spring
15-Third valve plate 16-fourth sealing ring 17-sleeve
18-Leakage rod 19-water inlet pipeline 20-leakage pipeline
21-Inverted straw
Detailed Description
The invention will be further elucidated with reference to the drawings and to specific embodiments. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. The methods of operation, under which specific conditions are not noted in the examples below, are generally in accordance with conventional conditions, or in accordance with the conditions recommended by the manufacturer.
The multipurpose valve system for a pressure-bearing water tank water heater of this embodiment, the pressure-bearing water tank water heater includes water tank D and inlet channel 19 connected with water inlet of water tank D, the multipurpose valve system includes: a single-direction internal leakage device A, an overpressure external leakage device B and a reverse suction device C.
The one-way internal leakage device A is arranged in a water inlet pipeline and comprises a first limit ring 6, a second limit ring 7, a guide rod 1, a sleeve 17, an internal leakage spring 4, a first seal ring 2, a valve rod 3, a second seal ring 5, a first valve plate 8 and the like.
The first limit ring 6 and the second limit ring 7 are sequentially arranged along the water inlet direction and fixed on the inner wall of the water inlet pipeline 19, and the joint of the first limit ring 6 and the second limit ring 7 and the inner wall of the water inlet pipeline 19 is sealed.
The guide rod 1 is nested in the first limit ring 6, can axially move along the first limit ring 6 and is limited by two ends of the guide rod 1.
The guide rod 1 is fixedly provided with a valve rod 3 along the axial direction of water inlet, and the free end of the valve rod 3 and the first valve plate 8 are integrally formed.
The sleeve 17 is sleeved on the valve rod 3, can move along the valve rod 3 and is limited by the first limit ring 6 and the second limit ring 7. One end of the sleeve 17 is abutted with the guide rod 1, and the diameter of the end is smaller than that of the sleeve body, so that the first sealing ring 2 is sleeved. A groove is formed in the middle of the other end of the sleeve 17, the inner diameter of the groove is matched with the diameter of the first valve plate 8, and the first valve plate 8 can freely move in the groove along the side wall of the groove. The inner diameter of the groove is larger than the aperture of the top end opening of the groove, and a second sealing ring 5 is fixedly arranged at the top in the groove.
The internal leakage spring 4 is sleeved on the valve rod 3 and is positioned in the groove, one end of the internal leakage spring 4 is fixed at the bottom of the groove, and the other end of the internal leakage spring is abutted with the first valve plate 8. The internal leakage spring 4 is in a compressed state, and the first valve plate 8 is tightly pressed against the second sealing ring 5 under the pushing of the internal leakage spring 4. The positive pressure of the internal leakage spring 4 is set to be 0.35MPa.
The overpressure leakage device B is arranged on the side surface of the water inlet pipe 19 and comprises: the leakage pipe 20, the leakage rod 18, the handle 9, the third sealing ring 13, the leakage spring 11, the second valve plate 12 and the like.
One end of the leakage pipeline 20 is a water inlet end communicated with the side surface of the water inlet pipeline 19, the other end is a sealing end, and the side surface of the leakage pipeline 20 is provided with a water outlet 10. The inner diameter of the leakage pipeline 20 is larger than the caliber of the water inlet end. The third sealing ring 13 is fixedly arranged in the leakage pipeline 20 and is positioned at the water inlet end.
The leakage rod 18 is arranged in the leakage pipeline 20, one end of the leakage rod penetrates through the sealing end and extends out of the sealing end to be inserted into the handle 9, and the leakage rod and the second valve plate 12 are integrally formed.
The leakage spring 11 is sleeved on the leakage rod 18 and is positioned in the leakage pipeline 20, one end of the leakage spring is fixed on the inner surface of the sealing end, and the other end of the leakage spring is abutted against the second valve plate 12. The leakage spring 11 is in a compressed state, and the second valve plate 12 is pressed against the third sealing ring 13 under the pushing of the leakage spring 11. The positive pressure of the leakage spring 11 was set to 0.75MPa.
One end of the handle 9 is hinged with the outer surface of the sealing end, and the leakage rod 18 can be driven to leave the third sealing ring 13 when the handle is lifted.
The suck-back device C is also provided on the side of the water intake pipe 19, and includes: a suck-back pipe 21, a fourth sealing ring 16, a pressurizing spring 14, a third valve sheet 15 and the like.
One end of the back suction pipeline 21 is communicated with the side surface of the water inlet pipeline 19, and the other end is an air inlet end communicated with the atmosphere. The side wall of the water inlet pipeline 19 is provided with holes for ventilation and water supply at the joint of the water inlet pipeline 19 and the back suction pipeline 21. The inner diameter of the back suction pipe 21 is larger than the diameter of the air inlet end.
The fourth sealing ring 16 is fixedly arranged on the inner wall of the back suction pipeline 21 and is close to the air inlet end.
The pressurizing spring 14 is arranged in the back suction pipeline 21, one end of the pressurizing spring is fixed on the outer surface of the side wall of the water inlet pipeline 19 corresponding to the back suction pipeline 20, and the other end of the pressurizing spring is fixedly connected with the third valve sheet 15. The booster spring 14 is in a compressed state, and the third valve plate 15 is tightly pressed against the fourth sealing ring 16 under the pushing of the booster spring 14.
The workflow of the multipurpose valve system of this embodiment is as follows:
The function of the single-direction internal leakage device A in the water inlet process of the water tank is as follows: tap water enters the multipurpose valve system along the water inlet pipeline 19, pushes away the first sealing ring 2 and the sleeve 17 under the action of tap water pressure, and at the moment, the valve rod 3 and the guide rod 1 are further driven to axially move along the first limit ring 6 due to the pushing action of the internal leakage spring 4 on the first valve plate 8; tap water continuously enters the water tank D, and water supplementing is smoothly completed. When the running water of the external network is cut off, the water pressure of the water tank D directly acts on the sleeve 17, and the sleeve 17 is pushed outwards, so that the first sealing ring 2 is extruded at the first limiting ring 6 to realize sealing at the position, and the water is ensured not to flow back to the external network.
The single-direction internal leakage device A plays a role in the internal leakage process of the pressure in the water tank: after the water tank D is filled with water, the pressure in the water tank D is the same as the pressure of the external network, and when the heating system in the water tank D is started, the water in the water tank D is heated to expand, and the sleeve 17 is pushed outwards to extrude the first sealing ring 2 at the first limiting ring 6, so that the sealing at the position is realized. Assuming that the tap water pressure is 0.3Mpa, the internal release spring 4 sets the positive pressure to 0.35Mpa. After the water expansion, the pressure of the water tank D is increased, when the pressure exceeds 0.35Mpa, the first valve plate 8 is jacked up to be separated from the second sealing ring 5, meanwhile, the first valve plate 8 drives the valve rod 3 and the guide rod 1 to axially and outwards move along the first limit ring 6, the residual water after expansion enters the groove, and then the residual water directly enters the outer net through gaps among the sleeve 17, the valve rod 3 and the guide rod 1, so that the maximum pressure of the water tank is ensured to be 0.35Mpa.
The leakage device B is mainly used for the pressure leakage process in the water tank: when the tap water pressure of the outer pipe network exceeds the maximum bearing pressure (assumed to be 0.75 Mpa) of the pipe network and the water tank D, the pressure of the leakage spring 11 is set to be 0.75Mpa, the pressure exceeding 0.75Mpa pushes the second valve plate 12 away to separate the second valve plate from the third sealing ring 13, meanwhile, the second valve plate 12 drives the leakage rod 18 to push the handle 9 outwards, so that the handle 9 rotates around the hinged position, redundant water enters the leakage pipe 20, and finally the redundant water is directly discharged from the water discharge port 10, thereby protecting the water tank D and the pipe network from bursting.
The leakage device B can also drive the leakage rod 18 and the first valve plate 12 to leave the third sealing ring 13 by manually lifting the handle 9, so that water enters the leakage pipeline 20 and is finally directly discharged from the water discharge port 10.
The suck-back device C is mainly used for the pressure boosting process in the water tank: the water tank of the house with smaller external net water pressure or multiple layers is high in position, the water consumption of the water point at the lowest layer is large, the water supplementing is insufficient, and the water tank D is easy to absorb flat. After the negative pressure is formed in the water tank D, the third valve plate 15 is propped open under the action of the atmospheric pressure and separated from the fourth sealing ring 16, and air directly enters the water tank D, so that the pressure of the water tank D is ensured not to be reduced any more, the water tank D cannot be sucked flat, and water in the water tank D cannot flow out and be lost due to the action of the negative pressure.
Further, it is to be understood that various changes and modifications of the present application may be made by those skilled in the art after reading the above description of the application, and that such equivalents are intended to fall within the scope of the application as defined in the appended claims.

Claims (6)

1. A multipurpose valve system for a pressurized water tank water heater comprising a water tank and a water inlet conduit connected to the water tank inlet, the multipurpose valve system comprising:
the first limiting ring and the second limiting ring are fixed on the inner wall of the water inlet pipeline and are sequentially arranged along the water inlet direction, and the joint of the first limiting ring and the second limiting ring and the inner wall of the water inlet pipeline is sealed;
the guide rod is nested with the first limit ring and can move along the axial direction of the first limit ring;
the valve rod is axially arranged along the water inlet pipeline, one end of the valve rod is fixedly connected with the guide rod, and the other end of the valve rod circumferentially protrudes to form a first valve plate;
The sleeve is sleeved on the valve rod, can move along the valve rod and is limited by the first limiting ring and the second limiting ring, one end of the sleeve, which is close to the first limiting ring, is reduced in diameter, a first sealing ring is sleeved on the sleeve, a groove is formed in the middle of one end of the sleeve, which is close to the second limiting ring, and a second sealing ring is fixedly arranged on the side wall, which is close to the opening, of the groove;
The inner leakage spring is sleeved on the valve rod and positioned in the groove, one end of the inner leakage spring is abutted with the bottom of the groove, and the other end of the inner leakage spring is abutted with the first valve plate; under the pushing of the internal leakage spring, the first valve plate is tightly pressed against the second sealing ring;
The side of inlet channel is equipped with and leaks the device, includes:
one end of the leakage pipeline is a water inlet end and is communicated with the side surface of the water inlet pipeline, the other end of the leakage pipeline is a sealing end, and a water outlet is arranged on the side surface of the leakage pipeline;
the leakage rod is arranged in the leakage pipeline, one end of the leakage rod penetrates through the sealing end and extends out of the sealing end to be inserted into the handle, and the other end of the leakage rod circumferentially protrudes to form a second valve plate;
One end of the handle is hinged with the outer side of the sealing end and can be lifted to drive the leakage rod;
the third sealing ring is fixedly arranged on the inner wall of the leakage pipeline and is close to the water inlet end;
The leakage spring is sleeved on the leakage rod and positioned in the leakage pipeline, one end of the leakage spring is abutted against the inner side of the sealing end, and the other end of the leakage spring is abutted against the second valve plate; under the pushing of the leakage spring, the second valve plate is tightly pressed against the third sealing ring;
the side of inlet channel still is equipped with the back-suction device, includes:
one end of the reverse suction pipeline is communicated with the side surface of the water inlet pipeline, and the other end of the reverse suction pipeline is an air inlet end communicated with the atmosphere;
the fourth sealing ring is fixedly arranged on the inner wall of the inverted straw and close to the air inlet end;
The pressurizing spring is arranged in the back suction pipeline, one end of the pressurizing spring is abutted against the outer surface of the side wall of the water inlet pipeline, which corresponds to the back suction pipeline, and the other end of the pressurizing spring is abutted against the third valve plate; and under the pushing of the pressurizing spring, the third valve sheet is tightly pressed against the fourth sealing ring.
2. The multipurpose valve system for a pressurized tank water heater of claim 1, wherein said groove inner diameter is greater than groove top end caliber.
3. The multipurpose valve system for a pressurized water tank heater according to claim 1, wherein the internal release spring sets a positive pressure of 0.3-0.35 MPa.
4. The multipurpose valve system for a pressurized tank water heater of claim 1, wherein said leak conduit has an inner diameter greater than said inlet end diameter.
5. The multipurpose valve system for a pressurized water tank heater according to claim 1, wherein the positive pressure of the leakage spring is set to 0.7-0.75 MPa.
6. The multipurpose valve system for a pressurized tank water heater of claim 1, wherein said inverted straw inner diameter is greater than said inlet end caliber.
CN201911000911.3A 2019-10-21 2019-10-21 Multipurpose valve system for pressure-bearing water tank water heater Active CN110748675B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB761033A (en) * 1954-11-26 1956-11-07 Mine Safety Appliances Co Improvements in or relating to a breathing apparatus valve
US3988000A (en) * 1975-04-07 1976-10-26 Dresser Industries, Inc. Seals for a gas service butterfly valve
CN108131473A (en) * 2018-01-31 2018-06-08 浙江神太太阳能股份有限公司 The check valve of decompression function built in a kind of band
CN108980429A (en) * 2018-10-20 2018-12-11 蒋琪峰 A kind of safety relief anticreeper of water heater
CN209294481U (en) * 2018-12-26 2019-08-23 台州旭升卫浴有限公司 A kind of water heater automatic switch and pressure relief safety valve
CN211039794U (en) * 2019-10-21 2020-07-17 杭州鸿雁管道***科技有限公司 Multipurpose valve system for pressure-bearing water tank water heater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB761033A (en) * 1954-11-26 1956-11-07 Mine Safety Appliances Co Improvements in or relating to a breathing apparatus valve
US3988000A (en) * 1975-04-07 1976-10-26 Dresser Industries, Inc. Seals for a gas service butterfly valve
CN108131473A (en) * 2018-01-31 2018-06-08 浙江神太太阳能股份有限公司 The check valve of decompression function built in a kind of band
CN108980429A (en) * 2018-10-20 2018-12-11 蒋琪峰 A kind of safety relief anticreeper of water heater
CN209294481U (en) * 2018-12-26 2019-08-23 台州旭升卫浴有限公司 A kind of water heater automatic switch and pressure relief safety valve
CN211039794U (en) * 2019-10-21 2020-07-17 杭州鸿雁管道***科技有限公司 Multipurpose valve system for pressure-bearing water tank water heater

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