CN111550580A

CN111550580A - Delay water outlet valve for pipe-in-pipe and hot water discharge system thereof

Info

Publication number: CN111550580A
Application number: CN202010544934.7A
Authority: CN
Inventors: 陈友苗; 陈奎宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2020-08-18
Also published as: WO2021253924A1

Abstract

The invention belongs to the technical field of domestic water, in particular to a delay water outlet valve for a pipe-in-pipe and a hot water discharge system thereof, wherein the delay water outlet valve comprises a water heater, a liquid inlet valve and a pipe-in-pipe pipeline, the tail end of a branch of the pipe-in-pipe pipeline is provided with the delay water outlet valve through a pipe-in-pipe joint, the delay water outlet valve comprises a valve body, the valve body is provided with a liquid outlet end and a pipe-in-pipe connecting end, the pipe-in-pipe connecting end is provided with an inner flow passage and an outer flow passage, and the; the inner side of the pipe-in-pipe connecting end is provided with a delay sealing part for separating an inner flow passage and an outer flow passage, the inner cavity of the valve body is provided with a damping piston and a first reset piece for providing elasticity, and the damping piston is arranged on the outer side wall or the inner side wall of the delay sealing part and realizes the sealing of the outer flow passage or the inner flow passage; when the internal medium pushes the damping piston to separate the delay sealing part, the delayed liquid outlet of the flow passage where the damping piston is located is realized. The invention has the advantages of less cold water emptying, high hot water outlet speed and the like.

Description

Delay water outlet valve for pipe-in-pipe and hot water discharge system thereof

Technical Field

The invention belongs to the technical field of domestic water, and particularly relates to a delay water outlet valve for a pipe-in-pipe and a hot water discharge system thereof.

Background

The pipe-in-pipe pipeline consists of a pipe-in-pipe and a pipe-in-pipe joint, and both the pipe-in-pipe and the pipe-in-pipe joint are formed by a pipe-in-pipe inner pipe forming an inner flow passage and a pipe-in-pipe outer pipe forming an outer flow passage.

The utility model discloses a utility model patent with application number CN201820054377.9 discloses a hot water circulating system, it is including the water heater, circulating pump, the originated valve of non-return type, the hot-water line who comprises hot-water line and coupling and the tail valve of connecting external equipment that connect gradually. The liquid inlet end of the circulating pump is connected with the output end of the water heater, and the output end of the circulating pump is connected with the non-return starting valve; a hot water flow passage communicated with the liquid inlet cavity of the starting valve and a water return flow passage communicated with the return cavity of the starting valve are arranged in the hot water pipe, and the hot water pipes are mutually connected through pipe joints; the liquid outlet end of the hot water pipe is provided with a tail valve, the tail valve comprises a tail valve body, a tail valve liquid inlet cavity communicated with a hot water flow passage and a tail valve backflow cavity communicated with a backwater flow passage are arranged in the tail valve body, and the tail valve liquid inlet cavity and the tail valve backflow cavity can be communicated with external equipment. The invention has the characteristics of energy saving, environmental protection, convenient pipeline layout, low cost, quick water outlet and the like.

The hot water circulation system is mainly applied to places with large hot water demand, such as villas, hotels, collective dormitories and the like. When the demand of hot water is smaller, the hot water is not required to be recycled in order to save resources. Even like this, the hot-water velocity of going out has improved a lot more to pipe-in-pipe pipeline compares ordinary pipeline, but, because it is not high to use hot water frequency, the hot water of inside and outside runner also cools off easily, when we meet the small demand water such as washing hand, face, still can not in time experience hot water. Therefore, the applicant further shortens the liquid outlet time of the hot water by delaying the liquid outlet of the inner flow passage or the outer flow passage, and provides a better water using experience for users.

The utility model discloses a utility model with application number CN201820054377.9 discloses a delay valve, it is including the valve body that has oil feed chamber and oil cavity, the oil-out that leads to the oil mouth one and be linked together with the oil cavity that is linked together with the oil feed chamber has on the valve body, the oil cavity that produces is equipped with the piston that falls into upper portion chamber and lower part chamber with the oil cavity, oil inlet and the oil gallery that has intercommunication upper portion chamber and lower part chamber on the piston, the oil feed chamber is linked together with the lower part chamber, and the one end that the piston is located the lower part chamber is equipped with the leather cup that supports and lean on the oil gallery and close the oil gallery, and the upper portion intracavity is equipped with the elastic component, and piston formula structure as an organic whole, the one end that the piston is located the lower part chamber is fixed with the sealing member, and the piston can remove and make the.

Although the above structure discloses a delay structure, there are the following problems:

1. the structure is only suitable for delaying liquid outlet in a single channel and is not suitable for being applied to a pipe-in-pipe;

2. the liquid outlet hole of the structure is arranged on the piston, is only suitable for small-amount liquid outlet and is not suitable for being applied to a water pipe;

3. the hydraulic pressure chamber has certain pressure, no matter low pressure sealing state or high pressure open mode, all can be through the piston effect spring, and the spring is in operating condition all the time, influences the life of spring.

Disclosure of Invention

The invention aims to provide a delay water outlet valve which is simple in structure and can quickly discharge hot water and a hot water discharge system thereof.

The purpose of the invention is realized as follows:

a delay water outlet valve for a pipe-in-pipe comprises a valve body, wherein a liquid outlet end and a pipe-in-pipe connecting end are arranged on the valve body, an inner runner of a communicating pipe-in-pipe inner pipe and an outer runner of a communicating pipe-in-pipe outer pipe are arranged on the pipe-in-pipe connecting end, and the liquid outlet end is communicated with the inner runner and the outer runner through an inner cavity of the valve body;

the inner side of the pipe-in-pipe connecting end is provided with a delay sealing part for separating an inner runner from an outer runner, the inner cavity of the valve body is provided with a damping piston and a first reset piece for providing elasticity, and the damping piston is arranged on the outer side wall or the inner side wall of the delay sealing part and realizes the sealing of the outer runner or the inner runner;

when the internal medium pushes the damping piston to separate the delay sealing part, the delayed liquid outlet of the flow passage where the damping piston is located is realized.

Preferably, a damping cavity is arranged in the valve body, the damping piston and the first reset piece are arranged in the damping cavity, and a damping adjusting flow passage communicated with the inner cavity of the valve body is further arranged in the damping cavity.

Preferably, a piston guide rod is arranged in the valve body, and the piston guide rod is provided with a middle flow passage which communicates the inner flow passage and the outer flow passage with the liquid outlet end; the damping cavity is arranged between the piston guide rod and the inner wall of the valve body or inside the piston guide rod.

Preferably, the damping adjusting flow passage is provided with a damping adjusting hole or a damping adjusting groove on the piston guide rod/damping piston, or is a damping gap arranged between the end of the damping piston and the piston guide rod.

Preferably, a damping adjusting piece is arranged in the valve body, the inner end of the damping adjusting piece is arranged on the damping adjusting flow passage, the size of the damping adjusting flow passage is controlled, and the adjustment of the delay time is realized.

Preferably, a filter screen is arranged on the inner side of the damping adjusting flow passage.

Preferably, the upper end of the damping piston is provided with a first sealing member for sealing the damping chamber, or/and the inner wall of the lower end of the damping piston is provided with a second sealing member for sealing the delay sealing part.

Preferably, the valve body is provided with a connecting pipe with an internal flow passage, and the connecting pipe extends into the inner cavity of the valve body to form the delay sealing part; a plurality of outer liquid inlet holes are formed in the valve body on the outer side of the connecting pipe, and the outer liquid inlet holes form the outer flow channel.

Preferably, the outside joint of connecting pipe has movable seal cover and second piece that resets, movable seal cover is used for connecting pipe well inner tube.

Preferably, a control end is arranged between the pipe-in-pipe connecting end and the liquid outlet end, and a control valve core and a hand wheel for driving the control valve core to rotate are arranged in the control end.

Preferably, the valve body includes the last valve body that is provided with liquid outlet end and control end and is provided with the lower valve body of pipe-in-pipe connection end, the lateral wall of lower valve body is provided with the threaded connection portion of connecting pipe-in-pipe line way and drives its pivoted clamping part.

Preferably, the pipe-in-pipe connecting end comprises a connecting sleeve which is arranged at the end part of the valve body in a split mode, the middle of the connecting sleeve is provided with the delay sealing part and forms an inner flow channel, the periphery of the connecting sleeve is provided with a plurality of outer liquid inlet holes which form an outer flow channel, and the connecting sleeve is abutted between the pipe-in-pipe inner pipe and the damping piston.

Preferably, at least one backflow hole is formed in the sealing end of the damping piston, and a water return sheet is arranged on the outer side of the backflow hole.

Preferably, a piston bracket is arranged on the damping piston, and the piston bracket comprises an upper bracket arranged in the damping cavity and a lower bracket for mounting the damping piston; when the damping piston seals the outer flow passage, the piston support is provided with a liquid passing hole.

The utility model provides a hot water discharge system, includes water heater, feed liquor valve and pipe-in-pipe pipeline, the branch road end of pipe-in-pipe pipeline install through pipe-in-pipe joint delay outlet valve.

Preferably, a temperature control device is further arranged in the valve body, and when the temperature control device senses hot water, the temperature control device drives the damping piston and opens the flow passage;

the temperature control device comprises a temperature control shell, wherein a temperature sensing medium and a temperature control rod are arranged in the temperature control shell, the temperature sensing medium drives the temperature control rod and the temperature control shell to move relatively through volume change, and driving of the damping piston is achieved.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

1. the invention seals the inner runner and the outer runner through the damping piston, and preferentially seals the outer runner with larger sectional area. When a user uses water, the inner flow passage preferentially discharges water, and the water discharging speed is high because the amount of cold water in the inner flow passage is small. At this time, if water is used for a short time, the outer flow passage is not normally opened, so that cold water discharge of a part of the outer flow passage can be saved and the time for discharging the part of cold water can be saved. After a certain time, the medium of outer runner can slowly drive the damping piston and open outer runner, and outer runner and interior runner go out water together, and the hot water of outer runner can be with the hot water of interior runner originally, and the temperature is moderate, can not influence user's use, just can experience the hot water of normal water yield among several seconds, can satisfy the water of big demand. In the process, the cold water of the external flow passage which needs to be emptied originally is utilized, and the waste of water resources is reduced.

2. The invention is provided with a damping cavity, a damping adjusting flow passage is arranged in the damping cavity, and the invention aims to accurately control the moving speed of a damping piston and realize delayed liquid discharge.

3. The damping adjusting flow passage is provided with the damping adjusting piece, so that the delay time can be conveniently adjusted at any time according to needs, and the operation is convenient.

4. The damping piston is provided with the backflow hole and the backflow sheet, so that when the inner flow channel is high in pressure, backflow can be relieved, and equipment and an exhaust system are protected.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the delayed liquid outlet of the outer flow passage according to the present invention.

Fig. 2 is one of the cross-sectional views of the first embodiment of the present invention.

Fig. 3 is a second cross-sectional view of the first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a second embodiment of the delayed liquid outlet of the outer flow passage according to the present invention.

Fig. 5 is a cross-sectional view of a second embodiment of the invention.

Fig. 6 is an exploded view of a second embodiment of the present invention.

Fig. 7 is a reference view showing a sealing state of the third embodiment of the delayed liquid-discharging of the outer flow passage of the present invention.

Fig. 8 is a reference view showing an opened state of the third embodiment of the delayed liquid-discharging of the outer flow path of the present invention.

Fig. 9 is a cross-sectional view of the damper adjustment flow passage at a-a in fig. 7.

Fig. 10 is a schematic structural diagram of a fourth embodiment of the delayed liquid outlet of the outer flow passage.

Fig. 11 is a cross-sectional view of the piston holder at B-B in fig. 10.

FIG. 12 is a schematic structural diagram of a fifth embodiment of the delayed liquid outlet of the inner flow passage according to the present invention.

Fig. 13 is a schematic view showing the construction of the hot water discharge system of the present invention.

Fig. 14 is a schematic structural view of a thermostatic valve according to a first embodiment of the present invention.

Fig. 15 is a sectional view of a thermo-valve of the first kind of the present invention.

Fig. 16 is a schematic view of the mounting structure of the temperature control device of the present invention.

The reference numerals in the figures denote the meanings:

1-a valve body; 2-a damping piston; 3-a first restoring member; 4-a delay seal;

11-liquid outlet end; 12-tube-in-tube connection end; 13-a control terminal; 14-inner flow channel; 15-outer flow channel; 16-outer liquid inlet hole; 17-a valve core; 18-a hand wheel;

21-a damping chamber; 22 a-a damping adjustment orifice; 22 b-damping adjustment grooves; 23-a piston guide rod; 24-an intermediate flow channel;

25-a damping adjustment; 26-a filter screen; 27-a first seal; 28-a second seal;

31-a connecting tube; 32-sealing sleeve; 33-a second restoring member;

41-an upper valve body; 42-a lower valve body; 43-a threaded connection; 44-a clamping portion;

51-a connecting sleeve; 52-a backflow hole; 53-a backwater tablet;

61-a piston holder; 62-liquid passing hole;

71-temperature controlled housing; 72-temperature sensitive medium; 73-temperature control rod; 74-temperature control mounting seat; 74 a-seat body; 74 b-a support; 75-a latch;

81-small liquid inlet holes; 82-reflux orifice; 83-a water return part; 84-inner tube mounting; 85-inner flow hole;

100-delayed outlet valve; 101-a water heater; 102-a liquid inlet valve; 103-pipe-in-pipe line; 104-tube-in-tube inner tube; 105-tube-in-tube outer tube; 106-delay temperature control valve; 111-hot water pipe; 112-cold water pipe.

Detailed Description

The invention is further described below with reference to specific examples:

[ DELAYED WATER-OUTLET VALVE ]

The first embodiment is as follows:

as shown in fig. 1-3, a delay outlet valve for pipe-in-pipe comprises a valve body 1, wherein a liquid outlet end 11, a control end 13 and a pipe-in-pipe connection end 12 are arranged on the valve body 1, and the pipe-in-pipe connection end 12 is generally installed on a pipe-in-pipe pipeline through a pipe-in-pipe joint and realizes delay liquid outlet of the pipe-in-pipe pipeline. A control end 13 is arranged between the pipe-in-pipe connecting end 12 and the liquid outlet end 11, a control valve core 17 and a hand wheel 18 for driving the control valve core 17 to rotate are arranged in the control end 13, the valve core 17 is a common ceramic valve core, a ball valve core and the like in the market, and the valve core is driven by the hand wheel 18 to realize liquid outlet control. In addition, in order to achieve the same control effect, the liquid outlet end 11 can be externally connected with a control valve.

In order to facilitate installation of inner cavity parts, the valve body 1 is arranged in a split manner, that is, the valve body 1 includes an upper valve body 41 provided with a liquid outlet end 11 and a control end 13 and a lower valve body 42 provided with a pipe-in-pipe connection end 12, the upper valve body and the lower valve body are connected by threads, a threaded connection portion 43 for connecting a pipe-in-pipe pipeline and a clamping portion 44 for driving the lower valve body to rotate are arranged on the outer side wall of the lower valve body 42, and the clamping portion 44 is generally.

As shown in fig. 2, an inner flow passage 14 communicating with the inner tube 104 of the tube-in-tube and an outer flow passage 15 communicating with the outer tube 105 of the tube-in-tube are disposed on the tube-in-tube connection end 12, and the liquid outlet end 11 communicates the inner flow passage 14 and the outer flow passage 15 through an inner cavity of the valve body 1. In this embodiment, the outer diameter of the lower valve body 42 is larger than the pipe-in-pipe connection end 12, so that the damping piston 2 has a larger installation space in the lower valve body 42. 12 inboards of pipe-in-pipe connection end are provided with the delay sealing portion 4 of the interior outer runner of separation, specifically, the connecting pipe 31 of the interior inner runner 14 of being provided with of valve body 1, connecting pipe 31 stretch into 1 inner chamber of valve body and form delay sealing portion 4, a plurality of outer feed liquor holes 16 have been seted up on valve body 1 in the connecting pipe 31 outside, outer feed liquor hole 16 forms outer runner 15.

The inner cavity of the valve body 1 is provided with a damping piston 2 and a first reset piece 3 for providing elasticity, the first reset piece 3 is preferably provided with a spring, and the spring in the embodiment is of a conical structure with a small upper part and a large lower part, so that the damping piston can stably move. The damping piston 2 is arranged on the outer side wall or the inner side wall of the delay sealing part 4 and realizes the sealing of an outer flow passage 15 or an inner flow passage 14; when the internal medium pushes the damping piston 2 to separate the delay sealing part 4, the delay liquid outlet of the flow passage where the damping piston 2 is located is realized. In the mechanical delay valve, the length of the delay seal 4 is related to the delay time, and relatively speaking, the longer the length, the longer the delay time.

The sectional area of an inner runner of a pipe-in-pipe pipeline is smaller than that of an outer runner, so that the water storage capacity of the outer runner is large, the amount of cooled cold water is large, in order to reduce the hot water outlet time of a liquid outlet end, the inner runner is preferred to discharge water, namely, the damping piston 2 can seal the outer runner, and in a short water using time, the damping piston 2 prevents or delays the discharge of cold water in the outer runner, so that the expected effect is achieved.

In order to control the delay time of the flow channel, a closed damping cavity 21 is arranged in the valve body 1, specifically, a piston guide rod 23 is arranged in the valve body 1, the piston guide rod 23 is integrally formed on the upper valve body, the damping cavity 21 is arranged between the piston guide rod 23 and the inner wall of the valve body 1, and the piston guide rod 23 is provided with a middle flow channel 24 for communicating the inner flow channel and the outer flow channel with the liquid outlet end 11. The damping cavity 21 is internally provided with the damping piston 2 and the first reset piece 3, and the damping cavity 21 is also internally provided with a damping adjusting flow passage communicated with the inner cavity of the valve body 1. The damping adjustment flow passage is provided with a piston guide rod 23/a damping adjustment hole 22a or a damping adjustment groove 22b on the damping piston 2, or is a damping gap provided between the end of the damping piston 2 and the piston guide rod 23.

As shown in fig. 3, in this embodiment, the damping adjustment flow passage is a damping adjustment hole 22a, the valve body 1 is connected with a damping adjustment member 25 through an internal thread, an inner end of the damping adjustment member 25 is tapered and disposed on the damping adjustment flow passage, and the size of the damping adjustment flow passage is controlled by rotating the damping adjustment member 25, so as to adjust the delay time. In order to prevent impurities from entering the damping cavity 21, a filter screen 26 is arranged on the inner side of the damping adjusting flow passage, and the filter screen 26 is arranged in a ring groove in the valve body and is fixed through a valve core.

In order to increase the sealing, the upper end of the damping piston 2 is provided with a first seal 27 sealing the damping chamber 21, or/and the lower end inner wall of the damping piston 2 is provided with a second seal 28 sealing the delay seal 4.

When no booster equipment such as a water pump is driven in the hot water discharge system, the medium pressure of the inner flow passage and the medium pressure of the outer flow passage are equal, the medium pressure at two ends of the damping piston 2 is balanced through the damping adjusting flow passage, no extra medium pressure acts on the first resetting piece, and the first resetting piece acts on the damping piston 2 to realize the sealing of the outer flow passage.

When the valve core is opened, the inner flow channel discharges liquid, the pressure of the inner flow channel is reduced, the pressure in the damping cavity 21 is reduced along with the pressure of the inner flow channel, the balance is broken, and the damping piston 2 can be slowly jacked open as long as the medium pressure of the outer flow channel is larger than the elastic force of the first resetting piece, so that the liquid discharging is delayed. In the embodiment, the movement speed of the damping piston 2 is controlled by controlling the discharge of the medium in the damping cavity 21 through the damping adjusting flow passage, and the length of the delay sealing part 4 is fixed, so that the delay liquid outlet time of the outer flow passage is controlled. When the first reset piece is in a non-working state, the first reset piece cannot work under the load all the time due to the medium pressure, and the service life of the first reset piece is guaranteed.

Because threaded connection can't unify the position behind every product rotation fixation, this leads to connecting pipe and pipe-in-pipe pipeline junction leakproofness unstable, leads to the easy weeping of interior outer runner, consequently, the outside of connecting pipe 31 is provided with the joint bulge loop, and the joint bulge loop is provided with the sealing washer and the joint has movable sealing boot 32 and second piece 33 that resets, and the second resets the preferred spring of piece 33, movable sealing boot 32 butt is at the mounted position of pipe-in-pipe inner tube in the connecting pipe.

Example two

As shown in fig. 4-6, the present embodiment is substantially the same as the first embodiment, and the difference is: piston guide rod 23 components of a whole that can function independently sets up in integrated into one piece's valve body 1, specifically, piston guide rod 23 middle part axial is seted up middle runner 24, its upper end is provided with the protruding edge of installation, the upper end butt on the protruding edge of installation is in the through-hole department of valve body 1, its lower extreme butt first piece 3 that resets. The other end of the first reset piece 3 is abutted to the damping piston 2, at least one backflow hole 52 is formed in the sealing end of the damping piston 2, and a backflow sheet 53 is arranged on the outer side of the backflow hole 52. When the pressure in the inner flow passage is relatively high, the pressure relief and the backflow can be realized through the backflow hole 52.

Preferably, the damping adjustment flow channel of the present embodiment is provided with a damping adjustment groove 22b on the piston guide rod 23, and although the size of the damping adjustment groove 22b is set when the damping adjustment flow channel is shipped from a factory, a manufacturer may set corresponding product models according to the damping adjustment grooves 22b with different sizes to meet the requirements of different application scenarios.

Preferably, the pipe-in-pipe connection end 12 includes a connection sleeve 51 separately disposed at an end of the valve body 1, the middle of the connection sleeve 51 is provided with the delayed sealing portion 4 and forms an inner flow passage 14, the periphery thereof is provided with a plurality of outer liquid inlet holes 16 forming an outer flow passage 15, and the connection sleeve 51 abuts against between the pipe-in-pipe inner pipe 104 and the damping piston 2. The inner end of the connecting sleeve 51 is also provided with a first mounting convex ring, the mounting convex ring is abutted against the water return sheet 53, and a gap for opening and closing the water return sheet 53 is formed between the mounting convex ring and the inner end of the water return sheet 53. The outer end of the connecting sleeve 51 is provided with a second mounting convex ring which is sleeved on the step part of the pipe-in-pipe inner pipe to realize the fixing and sealing functions.

EXAMPLE III

As shown in fig. 7-9, the present embodiment is substantially the same as the first embodiment, and the difference is: the piston guide rod 23 is arranged in the valve body 1 which is integrally formed in a split mode, specifically, the middle portion of the piston guide rod 23 is axially provided with a middle flow channel 24, the upper end of the piston guide rod is provided with a mounting convex edge, the mounting convex edge is mounted on the step surface of the valve body through a valve core, and a sealing gasket is arranged between the mounting convex edge and the valve core. The lower end of the piston guide rod 23 is outwards provided with a sliding convex ring, and the sliding convex ring is provided with a damping adjusting hole 22 a. The sliding convex ring reduces the friction force by reducing the contact area with the damping piston 2; meanwhile, the sliding convex ring can form a gap between the damping piston 2 and the piston guide rod 23, so that liquid can be conveniently discharged from the damping adjusting hole 22 a.

Example four

As shown in fig. 10 to 11, the present embodiment is basically the same as the third embodiment, and the difference is that: the damping chamber 21 and the first restoring element 3 are arranged inside the piston guide rod 23. The damping piston 2 is provided with a piston bracket 61, and the piston bracket 61 comprises an upper bracket arranged in the damping cavity 21 and a lower bracket for mounting the damping piston 2; the upper bracket is movably arranged in the damping cavity 21 through a first sealing element, and a damping adjusting hole 22a is further formed in the damping cavity 21.

For the flow of the medium, when the damping piston 2 seals the outer flow channel 15, the piston holder 61 is provided with a plurality of liquid passing holes 62.

EXAMPLE five

As shown in fig. 12, the present embodiment is basically the same as the fourth embodiment, and the difference is that: the damping piston 2 is arranged on the inner surface of the delay sealing part, namely a sealing inner flow passage; the other end is movably arranged in the damping cavity 21 in the piston guide rod 23, and the two ends are movably sealed by a first sealing element 27 and a second sealing element 28 respectively. For limiting, a limiting convex ring is arranged in the middle of the damping piston 2.

A plurality of middle holes are formed in the upper circumferential direction of the mounting convex edge of the piston guide rod 23, and a middle flow passage 24 communicated with the liquid outlet end is formed.

[ Hot Water discharge System ]

A hot water discharge system comprises a water heater 101, a liquid inlet valve 102 and a pipe-in-pipe pipeline 103, wherein the branch ends of the pipe-in-pipe pipeline 103 are provided with the delayed water outlet valve 100 of the first embodiment to the fifth embodiment through pipe-in-pipe joints. The hot water pipe 111 of the water heater 101 is connected with the pipe-in-pipe pipeline 103 through the liquid inlet valve 102, the liquid inlet valve 102 is a common angle valve, and the communication of an inner flow passage and an outer flow passage can be realized through a pipe joint in the pipe. The water heater 101 is further provided with a cold water pipe 112 for supplementing water, and the cold water pipe 112 is communicated with a tap water pipe.

The branch end can also be provided with a delay temperature control valve 106, the basic structure of which is similar to that of the delay water outlet valve 100, and the difference is that:

as shown in fig. 14-16, a temperature control mounting seat 74 is disposed in the middle of the tube-in-tube connecting end 12, and a temperature control device, the piston holder 61, and the first restoring member 3 are disposed on the temperature control mounting seat 74. Specifically, the temperature control mounting seat 74 includes a seat body 74a for mounting the temperature control device, the end of the seat body 74a extends to be provided with a plurality of support seats 74b, the piston bracket 61 and the first reset piece 3 are movably arranged between the support seats 74b, and the upper end of the support seat 74b is further provided with a pin 75 for fixing the first reset piece 3. The piston support 61 is formed as two intersecting U-shaped brackets, the intersecting gap of which is exactly clamped on the support 74b, so that the rotation of the bracket can be prevented. The end of the piston support 61 is provided with a damping piston 2, and the first resetting piece 3 enables the damping piston 2 to be abutted against the outer flow passage through the piston support 61.

The temperature control device comprises a temperature control shell 71, wherein a temperature sensing medium 72 and a temperature control rod 73 are arranged in the temperature control shell 71, and the temperature sensing medium 72 is preferably wax, namely a temperature sensing wax bag. The temperature-sensing medium 72 drives the temperature control rod 73 and the temperature control shell 71 to move relatively through volume change, and the driving of the damping piston is realized. Namely, the valve core is opened, the inner flow passage firstly discharges liquid, a small part of cold water in the inner flow passage is firstly discharged, and then the cold water is quickly changed into hot water after 3-5 seconds, so that the requirement of a user on less water quantity is met. After a period of time, when the temperature control device senses the hot water with the set temperature, the temperature control device drives the damping piston and opens the runner, the hot water flow is increased, and the requirement of a user for large water volume is met. Because the volume change of the temperature-sensitive medium 72 is relatively slow, when the damping piston is opened, the water quantity is slowly increased, and the larger water outlet fluctuation at the liquid outlet end can not be caused.

The damping piston of this embodiment seals the outer flow passage. The tube-in-tube connecting end 12 comprises an inner tube mounting part 84 for connecting the inner tube in the tube, and a sealing ring is arranged at the joint of the inner tube mounting part 84 and the inner tube in the tube, so that leakage of an inner flow channel is prevented. An inner flow channel and a plurality of inner flow holes 85 are further arranged in the inner pipe installation part 84, a liquid inlet small hole 81 is formed in the periphery of the inner pipe installation part 84, and the inner flow channel is communicated with a liquid outlet end through the inner flow holes 85 and the liquid inlet small hole 81. Temperature control device installs the inner at inner tube installation portion 84, piston support 61 passes feed liquor aperture 81 and connects the damping piston 2 in the outside.

In addition, when the valve core is closed, the medium pressure of the inner flow passage and the medium pressure of the outer flow passage are equal, when the damping piston 2 is sealed, the pressure of the inner flow passage on one side and the pressure of the outer flow passage on the other side are just offset, so that the medium pressures at two ends of the damping piston 2 are balanced, the first resetting piece cannot be additionally acted on the first resetting piece, the first resetting piece slightly damps the piston 2, the sealing of the outer flow passage can be realized, and the service life of the first resetting piece is prolonged. In order to guarantee the control effect of the temperature control device, the elastic force provided by the first reset piece is larger than the pressure of the medium inside, so that the pressure is prevented from dropping when the inner flow passage is opened, and the outer flow passage is automatically opened.

In this embodiment, the outer flow channel is formed by an inner tube mounting portion 84 and an inner cavity of the tube-in-tube connector, the damping piston 2 is sleeved on the inner tube mounting portion 84, an outer side wall of the damping piston protrudes outward to form a piston blocking portion, and the piston blocking portion abuts against a step surface of the tube-in-tube connector to achieve limiting sealing.

Preferably, at least one small backflow hole 82 is formed in the side wall of the damping piston 2, and a water return part 83 is arranged at the sealing end of the small backflow hole. When the water pressure of the inner flow passage is overlarge, the pressure relief and backflow can be realized through the backflow small hole 82 and the water return part 83.

In order to facilitate the installation of the inner cavity parts, the valve body 1 is arranged in a split manner, that is, the valve body 1 comprises an upper valve body provided with a liquid outlet end 11 and a control end 13 and a lower valve body provided with a pipe-in-pipe connecting end 12, the upper valve body and the lower valve body are in threaded connection, and the outer side wall of the lower valve body is provided with a threaded connecting part 43 for connecting a pipe-in-pipe pipeline and a clamping part 44 for driving the lower valve body.

In addition, in the temperature-controlled type delay valve, since the delay time is controlled by the temperature control device, it is not necessary to control the time by the delay seal portion 4, and therefore, the delay seal portion 4 herein refers to a portion capable of sealing the flow passage of the damping piston 2, and may be a single plane or inner and outer side walls, and in the present embodiment, the delay seal portion 4 is an outer side wall of the inner pipe mounting portion 84 and an inner side wall of the pipe-in-pipe joint.

Preferably, the cold water pipe 112 can be connected to the end of the main branch of the pipe-in-pipe pipeline through a tee joint to realize hot water circulation.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a postpone outlet valve for managing in pipe, includes valve body (1), is provided with on valve body (1) and goes out liquid end (11) and pipe in pipe link (12), its characterized in that: an inner runner (14) of a communicating pipe-in-pipe inner pipe (104) and an outer runner (15) of a communicating pipe-in-pipe outer pipe (105) are arranged on the pipe-in-pipe connecting end (12), and the liquid outlet end (11) is communicated with the inner runner (14) and the outer runner (15) through an inner cavity of the valve body (1);

a delay sealing part (4) is arranged on the inner side of the pipe-in-pipe connecting end (12), a damping piston (2) and a first reset piece (3) for providing elasticity are arranged in the inner cavity of the valve body (1), the damping piston (2) is installed on the outer side wall or the inner side wall of the delay sealing part (4), and sealing of an outer flow passage (15) or an inner flow passage (14) is realized;

when the internal medium pushes the damping piston (2) to separate the delay sealing part (4), the delayed liquid outlet of the flow passage where the damping piston (2) is located is realized.

2. A delayed outlet valve for a pipe in a pipe as claimed in claim 1, wherein: be provided with damping chamber (21) in valve body (1), be provided with in damping chamber (21) damping piston (2) and first piece (3) that reset, damping chamber (21) still are provided with the damping regulation runner of intercommunication valve body (1) inner chamber.

3. A delayed outlet valve for a pipe in a pipe as claimed in claim 2, wherein: a piston guide rod (23) is arranged in the valve body (1), and the piston guide rod (23) is provided with a middle flow passage (24) which is communicated with the inner flow passage, the outer flow passage and the liquid outlet end (11); the damping cavity (21) is arranged between the piston guide rod (23) and the inner wall of the valve body (1), or inside the piston guide rod (23).

4. A delayed outlet valve for a pipe in a pipe as claimed in claim 3, wherein: the damping adjusting flow channel is provided with a damping adjusting hole (22a) or a damping adjusting groove (22b) on the piston guide rod (23)/the damping piston (2), or is a damping gap arranged between the end part of the damping piston (2) and the piston guide rod (23).

5. A delayed outlet valve for a pipe in a pipe according to any of claims 2-4, characterized in that: and a damping adjusting piece (25) is arranged in the valve body (1), the inner end of the damping adjusting piece (25) is arranged on the damping adjusting flow passage, the size of the damping adjusting flow passage is controlled, and the adjustment of delay time is realized.

6. A delayed outlet valve for a pipe in a pipe as claimed in claim 5, wherein: and a filter screen (26) is arranged on the inner side of the damping adjusting flow passage.

7. A delayed outlet valve for a pipe in a pipe as claimed in claim 1, wherein: the valve body (1) is provided with a connecting pipe (31) with an inner flow channel (14), and the connecting pipe (31) extends into the inner cavity of the valve body (1) to form the delay sealing part (4); a plurality of outer liquid inlet holes (16) are formed in the valve body (1) on the outer side of the connecting pipe (31), and the outer liquid inlet holes (16) form the outer flow channel (15).

8. A delayed outlet valve for a pipe in a pipe as claimed in claim 7, wherein: the outer side of the connecting pipe (31) is clamped with a movable sealing sleeve (32) and a second reset piece (33), and the movable sealing sleeve (32) is used for connecting a pipe-in-pipe inner pipe.

9. A delayed outlet valve for a pipe in a pipe as claimed in claim 1, wherein: a control end (13) is arranged between the pipe-in-pipe connecting end (12) and the liquid outlet end (11), and a control valve core (17) and a hand wheel (18) for driving the control valve core (17) to rotate are arranged in the control end (13);

the valve body (1) comprises an upper valve body (41) provided with a liquid outlet end (11) and a control end (13) and a lower valve body (42) provided with a pipe-in-pipe connecting end (12), wherein the outer side wall of the lower valve body (42) is provided with a threaded connecting part (43) for connecting a pipe-in-pipe pipeline and a clamping part (44) for driving the threaded connecting part to rotate.

10. A delayed outlet valve for a pipe-in-pipe according to any one of claims 1-4 or 9, characterized in that: the pipe-in-pipe connecting end (12) comprises a connecting sleeve (51) which is arranged at the end part of the valve body (1) in a split mode, the middle of the connecting sleeve (51) is provided with the delay sealing part (4) and forms an inner flow channel (14), the periphery of the connecting sleeve is provided with a plurality of outer liquid inlet holes (16) which form an outer flow channel (15), and the connecting sleeve (51) abuts against between the pipe-in-pipe inner pipe (104) and the damping piston (2).

11. A delayed outlet valve for a pipe in a pipe as claimed in claim 12, wherein: at least one backflow hole (52) is formed in the sealing end of the damping piston (2), and a water return sheet (53) is arranged on the outer side of the backflow hole (52).

12. A delayed outlet valve for a pipe-in-pipe according to any one of claims 1-4 or 9, characterized in that: the damping piston (2) is provided with a piston support (61), and the piston support (61) comprises an upper support arranged in the damping cavity (21) and a lower support for mounting the damping piston (2); when the damping piston (2) seals the outer flow passage (15), the piston support (61) is provided with a liquid passing hole (62).

13. A hot water discharge system comprising a water heater (101), a liquid inlet valve (102) and a pipe-in-pipe line (103), characterized in that: the branch end of the pipe-in-pipe pipeline (103) is provided with the delay outlet valve (100) according to any one of 1-12 through a pipe-in-pipe joint.

14. A delayed outlet valve for a pipe in a pipe as claimed in claim 13, wherein: the valve body (1) is also internally provided with a temperature control device, and when the temperature control device senses hot water, the temperature control device drives the damping piston (2) and opens a flow passage where the damping piston is located;

the temperature control device comprises a temperature control shell (71), wherein a temperature sensing medium (72) and a temperature control rod (73) are arranged in the temperature control shell (71), the temperature sensing medium (72) drives the temperature control rod (73) and the temperature control shell (71) to move relatively through volume change, and driving of the damping piston is achieved.