CN211550553U

CN211550553U - Pipe-in-pipe reflux valve

Info

Publication number: CN211550553U
Application number: CN201922498612.9U
Authority: CN
Inventors: 陈友苗; 陈奎宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-22
Anticipated expiration: 2029-12-31

Abstract

The utility model belongs to the technical field of fluid control, refer in particular to a pipe-in-pipe reflux valve, including installing the valve body on pipe-in-pipe pipeline, pipe-in-pipe pipeline includes inner tube and outer tube, be provided with the interior runner in the inner tube be provided with outer runner in the outer tube, be provided with the mounting hole on the valve body, the mounting hole is provided with the valve rod, the inner of valve rod is provided with the adjusting valve head, through the opening size of the interior runner of pipe-in-pipe pipeline or outer runner of adjusting valve head control tube. The utility model controls the size of the inner flow passage or the outer flow passage through the valve rod and the adjusting valve head, and when the inner flow passage or the outer flow passage is blocked, the single flow passage can discharge liquid; in the pipe-in-pipe pipeline, because the inner flow passage and the outer flow passage are blocked, the inner flow passage and the outer flow passage do not participate in circulation, so that a great part of energy wasted due to circulation can be saved. When the inner and outer flow passages are opened, liquid backflow can be realized.

Description

Pipe-in-pipe reflux valve

Technical Field

The utility model belongs to the technical field of fluid control, refer in particular to a pipe-in-pipe reflux valve.

Background

In the field of hot water supply, an old-fashioned single pipe is generally adopted to supply hot water, which is deeply welcomed by consumers due to the characteristics of convenient installation, low cost and the like and slowly becomes an industry installation standard and an industry installation standard. However, when the single pipe is long, a large amount of cold water in the pipe needs to be emptied before hot water is used, so that the time for waiting for hot water is long, and a large amount of water resources are wasted.

With the continuous progress of science and technology, the concept of a hot water circulation pipeline is introduced in the field of hot water supply, a hot water supply pipe, a hot water return pipe and a cold water pipe are needed in a hot water loop, and the three pipelines are installed at the same time to achieve the purposes of quick water outlet and recycling of hot water. However, the layout of the three pipes becomes a difficult problem, which causes the problems of large design difficulty, high construction cost, large demand of raw materials for pipelines and the like, and the development is hindered at a little.

For the reasons, the applicant designs a single-pipe-in-pipe hot water circulation system (patent number 201820054377.9), and the core principle of the system is that hot water is supplied through an inner flow passage and returned through an outer flow passage, so that circulating water is used. However, there is a problem in that the ends of the inner flow channel and the outer flow channel of the pipe-in-pipe are communicated, and thus a circulating pump is required to be used for pressurization driving, when the number of branches of the system is large, and only one or more branches are required to work independently, the rest pipelines can form internal circulation, and the pipelines are long, so that the energy is seriously wasted.

In addition, in order to facilitate the layout of the pipe-in-pipe pipeline, the tail end of the pipeline needs to control internal circulation and install external equipment such as a water tap and the like through a return valve.

Disclosure of Invention

The utility model aims at providing a simple structure can realize the pipe-in-pipe backward flow valve that inside and outside runner was adjusted.

The purpose of the utility model is realized like this:

the utility model provides a pipe-in-pipe reflux valve, is including installing the valve body on pipe-in-pipe pipeline, pipe-in-pipe pipeline includes inner tube and outer tube, the inner intraductal inner flow way be provided with outer runner in the outer tube, be provided with the mounting hole on the valve body, the mounting hole is provided with the valve rod, the inner of valve rod is provided with the adjusting valve head, through the opening size of the inner flow way of adjusting valve head control pipe-in-pipe pipeline or outer runner.

Preferably, when the regulating valve head controls the inner flow passage, the end part of the regulating valve head is in a conical structure; when the adjusting valve head controls the outer flow passage, the end part of the adjusting valve head is of an annular structure and is connected to the adjusting valve head main body through a plurality of connecting strips.

Preferably, a liquid outlet is formed in the valve body, and a control valve is arranged at the liquid outlet.

Preferably, a sealing ring is arranged at the installation position of the valve body and the valve rod.

Preferably, the valve rod is in threaded connection with the mounting hole, and a manual driving part is arranged at the outer end extending out of the valve body.

Preferably, the outer end of the valve rod extending out of the valve body is provided with an electric driver which controls the valve rod to stretch and contract.

Preferably, the regulator head is movably disposed at an end of the valve stem by a first spring.

Preferably, the valve body includes valve inner tube, valve outer tube and connects valve connecting portion between them, the one end of valve body is provided with pipe-in-pipe connection end, the other end is provided with the mounting hole, threaded connection has interior regulation head in the mounting hole, and the middle part of interior regulation head is provided with valve rod and adjusting valve head.

Preferably, the inner regulator head, the valve stem and the regulator valve head are integrally formed.

Preferably, an inner ring is arranged inside the inner adjusting head, and the valve rod is in threaded connection with the inner ring, or is movably arranged in a through hole of the inner ring through a second spring.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model controls the size of the inner flow passage or the outer flow passage through the valve rod and the adjusting valve head, and when the inner flow passage or the outer flow passage is blocked, the single flow passage can discharge liquid; in the pipe-in-pipe pipeline, because the inner flow passage and the outer flow passage are blocked, the inner flow passage and the outer flow passage do not participate in circulation, so that a great part of energy wasted due to circulation can be saved. When the inner and outer flow passages are opened, liquid backflow can be realized.

2. The utility model discloses a liquid outlet has been seted up on the valve body, can connect external device, then through control valve control, makes things convenient for liquid output.

3. The first spring is arranged between the valve rod and the regulating valve head, so that the dynamic sealing of the inner runner or the outer runner can be realized, the pressure stabilizing effect is realized, and the instability of the output pressure of the liquid outlet is prevented; the pressure is insufficient during backflow, and the normal use of the next-stage pipeline is prevented from being influenced; meanwhile, the pressure relief and backflow can be realized under high pressure. In addition, the axial position of the valve rod can be adjusted, the elastic force of the first spring can be adjusted, and the output pressure can be adjusted.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention for manually adjusting the size of an inner flow passage.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention for manually adjusting the size of the outer flow passage.

Fig. 3 is a schematic structural diagram of a third embodiment of the present invention for electrically adjusting the size of the inner flow passage.

Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention for electrically adjusting the size of the outer flow passage.

Fig. 5 is a schematic structural diagram of a fifth embodiment of the present invention for adjusting the size of the inner flow passage at the terminal.

Fig. 6 is a schematic structural diagram of a sixth embodiment of the present invention for adjusting the size of the external flow channel at the terminal.

Fig. 7 is a schematic structural diagram of a seventh embodiment of the present invention for automatically adjusting the size of the inner flow passage.

Fig. 8 is a schematic structural diagram of an eighth embodiment of the present invention for automatically adjusting the size of the outer flow passage.

Fig. 9 is a schematic structural diagram of a ninth embodiment of the present invention, illustrating a built-in automatic adjusting external flow passage.

Fig. 10 is a schematic structural diagram of a tenth embodiment of the present invention, in which the size of the internal flow passage is manually adjusted by a built-in integrated type.

Fig. 11 is a schematic structural diagram of an eleventh embodiment of the present invention, in which a split type internal flow passage is manually adjusted.

Fig. 12 is a schematic structural diagram of a twelfth embodiment of the present invention for automatically adjusting the size of the internal flow passage.

The reference numerals in the figures denote the meanings:

1-a valve body; 2-pipe-in-pipe line; 3-a valve stem; 31-a manual drive; 4-adjusting the valve head; 41-connecting strips; 5-a control valve; 6-an electric drive; 7-a first spring; 8-an internal adjustment head; 9-inner ring; 10-a second spring;

11-mounting holes; 12-a liquid outlet; 13-sealing ring; 14-valve inner tube; 15-valve outer tube; 16-a valve connection;

21-inner tube; 22-an outer tube; 23-an inner flow passage; 24-an outer flow channel; 25-tube in tube; 26-pipe joint.

Detailed Description

The invention will be further described with reference to specific embodiments below:

embodiment one and embodiment two:

as shown in fig. 1 or 2, a pipe-in-pipe reflux valve is installed in a pipe-in-pipe pipeline 2, the pipe-in-pipe pipeline 2 is composed of a pipe-in-pipe 25 and a pipe joint 26, and both include an inner pipe 21 and an outer pipe 22, an inner flow passage 23 is provided in the inner pipe 21, an outer flow passage 24 is provided in the outer pipe 22, and the inner flow passage 23 and the outer flow passage 24 can realize internal and external circulation. The pipeline is mainly applied to hot water circulation and water purification circulation, in the hot water circulation, hot water is generally introduced into an inner flow passage, and an outer flow passage is used for backflow; in the water purification cycle, the inner flow passage is generally communicated with purified water, and the outer flow passage is communicated with tap water. The utility model discloses a main effect is just to adjust the size of interior runner 23 or outer runner 24, realizes that single flow path goes out the liquid and controls the inside and outside runner backward flow.

The utility model discloses a can install valve body 1 on pipe-in-pipe pipeline 2, be provided with mounting hole 11 on the valve body 1, mounting hole 11 is provided with valve rod 3, the installation department of valve body 1 and valve rod 3 is provided with sealing washer 13. The inner end of the valve rod 3 is provided with an adjusting valve head 4, and the opening size of an inner flow passage 23 or an outer flow passage 24 of the pipe-in-pipe pipeline 2 is controlled through the adjusting valve head 4. Specifically, when the adjusting valve head 4 controls the inner flow passage 23, the end of the adjusting valve head 4 is in a conical structure; when the adjusting valve head 4 controls the outer flow passage 24, the end part of the adjusting valve head 4 is in an annular structure and is provided with an oblique chamfer of the sealed outer flow passage, and the annular structure is connected to the adjusting valve head main body through a plurality of connecting strips 41, so that the supporting and the liquid discharging of the inner flow passage are facilitated.

Preferably, a liquid outlet 12 is formed in the valve body 1, a control valve 5 is arranged at the position of the liquid outlet 12, the control valve 5 is arranged in the valve body 1, the control valve 5 is preferably a ball valve or a ceramic valve, and liquid can be conveniently discharged through the control valve 5.

In order to facilitate the adjustment of the valve rod, the valve rod 3 is screwed on the mounting hole 11, and the outer end extending out of the valve body 1 is provided with a manual driving part 31.

Example three and example four:

as shown in fig. 3 or 4, the present embodiment is substantially the same as the first embodiment, and the difference is that: the outer end of the valve rod 3 extending out of the valve body 1 is provided with an electric driver 6, and the electric driver 6 controls the valve rod 3 to stretch. The electric drive 6 is preferably a solenoid valve or an electric or electrothermal valve.

Fig. 3 is a structural diagram of the electric driver 6 for controlling the inner flow passage, wherein the end of the adjusting valve head 4 is in a tapered structure; fig. 4 is a schematic structural diagram of the electric driver 6 for controlling the outer flow passage, the end of the regulator valve head 4 is in an annular structure and is provided with a bevel chamfer for sealing the outer flow passage, and the annular structure is connected to the regulator valve head body through a plurality of connecting strips 41.

In addition, the control valve 5 of the present embodiment is an angle valve, and is screwed at the liquid outlet 12.

Example five and example six:

as shown in fig. 5 or 6, the third or fourth embodiment is substantially the same as the third or fourth embodiment, and the difference is that the valve body 1 is not provided with the liquid outlet 12, which is mainly installed at the end of the pipeline, and when the electric driver 6 drives the valve rod 3 to extend out, the internal flow channel or the external flow channel is sealed, so that the subsequent pipe-in-pipe pipeline 2 does not have internal circulation, and a large part of energy wasted due to circulation can be saved; when the subsequent pipe-in-pipe pipeline 2 needs to flow back, the electric driver 6 drives the valve rod 3 to retract.

Example seven and example eight:

as shown in fig. 7 or 8, the present embodiment is substantially the same as the first embodiment, and the difference is that: the regulating valve head 4 is movably arranged at the end part of the valve rod 3 through a first spring 7. Specifically, the end of the valve rod 3 is provided with a movable hole, a first spring 7 and the adjusting valve head 4 are arranged in the movable hole, one end of the adjusting valve head 4 is abutted against the first spring 7, and the other end of the adjusting valve head 4 is abutted against the inner flow passage or the outer flow passage. The utility model discloses be provided with first spring 7, the steady play liquid of the confession pressure balance and liquid outlet 12 of assurance pipeline of runner or outer runner in the control that can be dynamic also can realize the effect of pipeline high pressure backward flow simultaneously.

In addition, the valve rod 3 is connected to the mounting hole 11 in a threaded manner, a manual driving portion 31 is arranged at the outer end of the valve body 1, and the manual driving portion 31 is rotated to move the valve rod 3 so as to adjust the elastic force of the first spring 7 and adjust the output pressure.

Example nine:

as shown in fig. 9, the present embodiment is substantially the same as the first embodiment, and the difference is that: the valve body 1 comprises a valve inner pipe 14, a valve outer pipe 15 and a valve connecting part 16 for connecting the valve inner pipe 14 and the valve outer pipe 15, one end of the valve body 1 is provided with a pipe-in-pipe connecting end, the other end of the valve body is provided with the mounting hole 11, the valve rod 3 is connected with the mounting hole 11 in a threaded manner, the valve rod 3 is a hollow external thread rod, and the outer end of the external thread rod is provided with an inner hexagonal driving part for facilitating the tool to drive the external; the inner end of the valve body is provided with a first spring 7 and an adjusting valve head 4, and the adjusting valve head 4 is of an annular structure and is blocked on an outer flow passage.

In addition, the external screw rod is rotated to adjust the elastic force of the first spring 7, thereby adjusting the output pressure.

Example ten:

as shown in fig. 10, the present embodiment is substantially the same as the first embodiment, and the difference is that: valve body 1 includes valve inner tube 14, valve outer tube 15 and connects valve connecting portion 16 between them, the one end of valve body 1 is provided with pipe in tube connection end, the other end is provided with mounting

hole

11, 11 female connections in the mounting hole have interior regulation head 8, and the middle part of interior regulation head 8 is provided with valve rod 3 and regulation valve head 4 through a plurality of support bars, interior regulation head 8,

valve rod

3 and 4 integrated into one piece of regulation valve head, the size of interior runner can be controlled through manual regulation interior regulation head 8.

Example eleven:

as shown in fig. 11, the present embodiment is substantially the same as the embodiment, and the difference is that: interior regulation head 8 is inside to be provided with inner ring 9 through a plurality of support bars, valve rod 3 and inner ring 9 threaded connection, the 3 outer ends of valve rod are provided with manual drive portion 31, can control the size of interior runner through manual regulation valve rod 3.

Example twelve:

as shown in fig. 12, the present embodiment is substantially the same as the embodiment, and is different in that: interior regulation head 8 is inside to be provided with inner ring 9 through a plurality of support bars, and the through-hole internalization of inner ring 9 is provided with valve rod 3, and the 3 overcoat of valve rod is equipped with second spring 10, and second spring 10 one end butt is on inner ring 9, its other end butt is at adjusting valve head 4 for adjusting valve head 4 butt is on the inner flow way, realizes inner flow way's dynamic control.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a return valve in pipe, is including valve body (1) that can install on pipe in pipe pipeline (2), pipe in pipe pipeline (2) are including inner tube (21) and outer tube (22), be provided with in inner tube (21) interior runner (23) be provided with outer runner (24) in outer tube (22), its characterized in that: the valve is characterized in that a mounting hole (11) is formed in the valve body (1), a valve rod (3) is arranged in the mounting hole (11), an adjusting valve head (4) is arranged at the inner end of the valve rod (3), and the opening size of an inner flow passage (23) or an outer flow passage (24) of the pipe-in-pipe pipeline (2) is controlled through the adjusting valve head (4).

2. The pipe-in-pipe reflux valve of claim 1, wherein: when the adjusting valve head (4) controls the inner flow passage (23), the end part of the adjusting valve head (4) is in a conical structure; when the adjusting valve head (4) controls the outer flow passage (24), the end part of the adjusting valve head (4) is in an annular structure and is connected to the adjusting valve head body through a plurality of connecting strips (41).

3. The pipe-in-pipe reflux valve of claim 1, wherein: a liquid outlet (12) is formed in the valve body (1), and a control valve (5) is arranged at the position of the liquid outlet (12).

4. The pipe-in-pipe reflux valve of claim 1, wherein: and a sealing ring (13) is arranged at the mounting position of the valve body (1) and the valve rod (3).

5. The pipe-in-pipe reflux valve as set forth in any one of claims 1-4, wherein: the valve rod (3) is in threaded connection with the mounting hole (11), and a manual driving portion (31) is arranged at the outer end extending out of the valve body (1).

6. The pipe-in-pipe reflux valve as set forth in any one of claims 1-4, wherein: the outer end of the valve rod (3) extending out of the valve body (1) is provided with an electric driver (6), and the electric driver (6) controls the valve rod (3) to stretch.

7. The pipe-in-pipe reflux valve as set forth in any one of claims 1-4, wherein: the adjusting valve head (4) is movably arranged at the end part of the valve rod (3) through a first spring (7).

8. The pipe-in-pipe reflux valve of claim 1, wherein: valve body (1) is including valve inner tube (14), valve outer tube (15) and connect valve connecting portion (16) between them, the one end of valve body (1) is provided with pipe-in-pipe connection end, the other end is provided with mounting hole (11), and mounting hole (11) internal thread connection has interior regulation head (8), and the middle part of interior regulation head (8) is provided with valve rod (3) and adjusting valve head (4).

9. The pipe-in-pipe reflux valve of claim 8, wherein: the inner adjusting head (8), the valve rod (3) and the adjusting valve head (4) are integrally formed.

10. The pipe-in-pipe reflux valve of claim 8, wherein: the inner adjusting head (8) is internally provided with an inner ring (9), the valve rod (3) is in threaded connection with the inner ring (9), or is movably arranged in a through hole of the inner ring (9) through a second spring (10).