Temperature control adapter valve for pipe-in-pipe

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a pipe-in-pipe temperature control adapter valve. The temperature control valve comprises a temperature control valve body, the temperature control valve body is provided with at least one pipe-in-pipe installation end used for being connected with a pipe-in-pipe, a valve element installation end and a liquid outlet end, an inner flow channel and an outer flow channel are formed between the pipe-in-pipe installation end and the liquid outlet end, and the valve element installation end is communicated with the outer flow channel; the valve element mounting frame is mounted at the valve element mounting end, is used for separating the outer flow channel and is provided with at least one valve hole for communicating the outer flow channel; the valve cover is used for fixing the valve core mounting frame on the valve core mounting end; the valve core is movably arranged on the valve core mounting frame; and the temperature control assembly is installed on the valve element installation frame and provided with a sensing end stretching into the inner flow channel and a telescopic end connected with the valve element, when the temperature control assembly senses hot water in the inner flow channel, the telescopic end of the temperature control assembly drives the valve element to open the valve hole, liquid flows out of the outer flow channel, and therefore delayed liquid flowing out of the outer flow channel is achieved. The backflow prevention device has the advantages of simple structure, convenience in installation, high control precision, good backflow prevention effect and the like.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically refers to a temperature control transfer valve for use in pipe-in-pipe applications. Background Technology

[0002] The pipe-in-pipe system consists of a pipe-in-pipe and a pipe-in-pipe connector. Both are composed of an inner pipe forming the inner flow channel and an outer pipe forming the outer flow channel. It has the advantages of convenient installation and fast liquid discharge speed.

[0003] Patent CN202022293558.7 discloses a temperature-controlled adapter valve for use in pipe-in-pipe systems. This valve is installed between pipe-in-pipe systems or between a pipe-in-pipe system and a regular pipe to achieve delayed liquid discharge from the outer flow channel, providing users with a better hot water experience. The temperature-controlled adapter valve includes a three-way connector and a temperature-controlled valve core. The valve core includes a valve core, a piston, and a temperature control device. The valve core has an external liquid inlet. The sensing end of the temperature control device extends into the inner flow channel. When hot water flows out of the inner flow channel, the driving end of the temperature control device drives the piston to move a corresponding distance and opens the external liquid inlet, thus achieving delayed liquid discharge from the outer flow channel.

[0004] The above solution has the following problems:

[0005] 1. The valve core is fixed to the tee pipe joint by a threaded structure, which makes it impossible to accurately guarantee the installation position of the external liquid inlet hole, thus affecting the installation effect of the temperature control valve core;

[0006] 2. The outer periphery of the valve core is fitted with an external check structure for backflow in the external flow channel. The installation method of this external check structure is unstable and it is easy to fall off or fail. Summary of the Invention

[0007] The purpose of this utility model is to provide a pipe-in-pipe temperature control adapter valve that is simple in structure, easy to install, and has high control precision.

[0008] The purpose of this utility model is achieved as follows:

[0009] A pipe-in-pipe temperature-controlled adapter valve includes: a temperature-controlled valve body having at least one pipe-in-pipe mounting end for connecting the pipe-in-pipe, a valve core mounting end, and a liquid outlet end, wherein an inner flow channel and an outer flow channel are formed between the pipe-in-pipe mounting end and the liquid outlet end, and the valve core mounting end communicates with the outer flow channel; a valve core mounting bracket, mounted on the valve core mounting end and used to separate the outer flow channel, and the valve core mounting bracket is provided with at least one valve hole for guiding the outer flow channel; a valve cover for fixing the valve core mounting bracket to the valve core mounting end; a valve core, movably disposed on the valve core mounting bracket; and a temperature control component, mounted on the valve core mounting bracket, having a sensing end extending into the inner flow channel and a telescopic end connecting to the valve core, wherein when the temperature control component senses hot water in the inner flow channel, its telescopic end drives the valve core to open the valve hole, thereby realizing the liquid outlet of the outer flow channel.

[0010] The present invention further includes a valve core mounting cavity for mounting the valve core in the middle of the valve core mounting bracket. The valve hole includes at least one inlet hole and at least one outlet hole, which are located on both sides of the valve core mounting cavity. The valve core can control the opening and closing of the inlet hole and / or the outlet hole.

[0011] The present invention further includes an outlet groove on the side wall of the valve core mounting bracket where the outlet hole is located, which connects the external flow channel and the outlet hole, and a check valve assembly for preventing backflow from the outlet hole is provided in the outlet groove.

[0012] The present invention further includes a check valve assembly comprising a check valve diaphragm and a check valve fixing member. The check valve diaphragm has a diaphragm fixing part that cooperates with the check valve fixing member and a diaphragm check valve part that seals the liquid outlet. The check valve fixing member has snap-fit ​​parts extending on the left and right sides. The left and right sides of the liquid outlet groove are provided with snap-fit ​​grooves that are adapted to the snap-fit ​​parts. The check valve fixing member fixes the check valve diaphragm in the liquid outlet groove through the diaphragm fixing part.

[0013] The present invention further includes an inlet groove on the side wall of the valve core mounting bracket where the inlet hole is located, which connects the external flow channel and the inlet hole. The bottom of the inlet groove is provided with several filter protrusions that are adapted to the inner wall of the tube-in-tube mounting end, and filter mesh is formed between two filter protrusions.

[0014] The present invention further includes a sealing protrusion on the side wall of the valve core mounting bracket that is adapted to the pipe-in-pipe mounting end, a first sealing groove being provided in the sealing protrusion, and a first sealing ring being provided in the first sealing groove; or / and a second sealing groove being provided on the side wall of the valve core mounting bracket, and a second sealing ring being provided in the second sealing groove for cooperating with the sealing valve cover.

[0015] The present invention further includes a reset component for resetting the valve core between the valve cover and the valve core.

[0016] The present invention further includes a guide limiting structure provided between the inner wall of the valve core mounting end and the valve core mounting bracket. The guide limiting structure includes at least one guide limiting protrusion and a corresponding guide limiting groove.

[0017] The present invention further includes guide limiting grooves on the left and right sides of the valve core mounting bracket, corresponding guide limiting protrusions on the inner wall of the valve core mounting end, and an isolation outer seal between the guide limiting protrusions and the guide limiting grooves.

[0018] The present invention further includes a temperature control mounting hole that communicates with the inner flow channel inside the valve core mounting end, and an inner sealing element for sealing the temperature control mounting hole is provided at the bottom of the valve core mounting bracket or on the outside of the sensing end of the temperature control component. The inner sealing element and the outer sealing element are integrally formed.

[0019] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0020] 1. This utility model uses a valve cover to install the valve core mounting bracket on the valve core mounting end of the temperature control valve body, which can effectively ensure the installation position of the valve core mounting bracket.

[0021] 2. This utility model provides a check valve assembly at the outlet of the valve core mounting bracket, including a check valve diaphragm and a check valve fixing component. The check valve diaphragm is snapped into the outlet groove by the check valve fixing component to achieve fixed installation, which has the advantages of convenient installation and not easy to fall off.

[0022] 3. The present invention has an inlet groove on the side wall of the valve core mounting bracket that connects the external flow channel and the inlet hole. The bottom of the inlet groove is provided with several filter protrusions that are adapted to the inner wall of the pipe-in-pipe mounting end. A filter mesh is formed between two filter protrusions, which is beneficial for filtering large particulate impurities.

[0023] 4. This utility model provides a guide limiting structure between the inner wall of the valve core mounting end and the valve core mounting bracket. Specifically, guide limiting grooves are opened on the left and right sides of the valve core mounting bracket. The guide limiting grooves are strip-shaped and arranged along the axial direction. Corresponding guide limiting protrusions are provided on the inner wall of the valve core mounting end 12. The valve core mounting bracket can be inserted into the valve core mounting end along the guide limiting protrusions, thereby fixing the circumferential position of the valve core mounting bracket.

[0024] 5. This utility model effectively separates the external flow channel space at the valve core mounting end by sealing the bottom of the valve core mounting bracket with an inner sealing element, sealing the side walls of the valve core mounting bracket with outer sealing elements on both sides, and sealing the top of the valve core mounting bracket with a first sealing ring, thereby making the control of the external flow channel more precise. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the temperature control transfer valve of this utility model.

[0026] Figure 2 This is a cross-sectional view of the temperature control transfer valve of this utility model.

[0027] Figure 3 This is an exploded view of the temperature control adapter valve of this utility model.

[0028] Figure 4 yes Figure 2 Sectional view at point AA.

[0029] Figure 5 This is a schematic diagram of the valve core mounting bracket where the liquid inlet hole of this utility model is located.

[0030] Figure 6 This is a schematic diagram of the valve core mounting bracket where the liquid outlet hole of this utility model is located.

[0031] Figure 7 This is a schematic diagram of the structure of the temperature control valve body of this utility model.

[0032] The meaning of the labels in the diagram:

[0033] 1. Temperature control valve body; 2. Valve core mounting bracket; 3. Valve cover; 4. Valve core; 5. Temperature control assembly; 6. Check valve assembly; 7. Reset component; 8. Outer seal; 9. Inner seal;

[0034] Pipe-in-pipe mounting end 11; valve core mounting end 12; guide limit protrusion 121; outer sealing protrusion 122; liquid outlet end 13; inner flow channel 14; outer flow channel 15; temperature control mounting hole 16;

[0035] Valve core mounting cavity 21; liquid inlet hole 22; liquid outlet hole 23; liquid outlet groove 24; snap-fit ​​groove 241; liquid inlet groove 25; filter protrusion 251; sealing protrusion 26; first sealing ring 27; second sealing ring 28; guide limiting groove 29; outer sealing groove 30;

[0036] Check diaphragm 61; Diaphragm fixing part 611; Diaphragm check part 612; Check fixing member 62; Snap-fit ​​part 621;

[0037] Arrow marks 100. Detailed Implementation

[0038] The present invention will be further described below with reference to specific embodiments:

[0039] like Figure 1 As shown, a pipe-in-pipe temperature control adapter valve is mainly used in pipe-in-pipe hot water pipelines to achieve delayed liquid discharge from the external flow channel. It includes a temperature control valve body 1, a valve core mounting bracket 2, a temperature control component 5, a valve core 4, a reset component 7, and a valve cover 3.

[0040] like Figure 2 As shown, the temperature control valve body 1 has at least one pipe-in-pipe mounting end 11 for connecting a pipe-in-pipe, a valve core mounting end 12, and a liquid outlet end 13 for connecting a pipe-in-pipe or a regular pipe. An inner flow channel 14 and an outer flow channel 15 are formed between the pipe-in-pipe mounting end 11 and the liquid outlet end 13, and the valve core mounting end 12 communicates with the outer flow channel 15. Specifically, in this embodiment, the liquid outlet end 13 is used to connect the pipe-in-pipe. The temperature control valve body 1 includes a three-way outer valve body and a two-way inner valve body. The inner valve body is coaxially disposed within the outer valve body between the pipe-in-pipe mounting end 11 and the liquid outlet end 13 through a valve body connecting part. An inner flow channel is formed within the inner valve body, and an outer flow channel is formed between the inner valve body and the outer valve body. An insert with internal threads is integrally formed on the valve core mounting end 12, and a temperature control mounting hole 16 for mounting the temperature control component 5 is opened at the position facing the valve core mounting end 12.

[0041] like Figure 3As shown, the valve core mounting bracket 2 is a tubular structure, installed on the valve core mounting end 12 and used to separate the external flow channel 15. A valve core mounting cavity 21 for mounting the valve core 4 is provided in its middle. The upper end of the valve core mounting cavity 21 is open, and the lower end has a temperature control connection hole for mounting the temperature control component 5. At least one valve hole for guiding the external flow channel 15 is provided on the side wall of the valve core mounting bracket 2. In this embodiment, the valve hole includes at least one inlet hole 22 and at least one outlet hole 23, which are located on opposite sides of the valve core mounting cavity 21.

[0042] The valve core 4 is movably mounted within the valve core mounting cavity 21 of the valve core mounting bracket 2. It is cylindrical in shape and has valve core sealing grooves at both its upper and lower ends. O-rings are respectively installed in the valve core sealing grooves. The valve core 4 can control the opening and closing of the inlet hole 22 and / or the outlet hole 23 by changing its position. In this embodiment, the valve core 4 controls the opening and closing of the inlet hole 22.

[0043] like Figure 2 As shown, the temperature control component 5 is installed in the temperature control connection hole of the valve core mounting bracket 2. It has a sensing end that extends into the inner flow channel 14 and a telescopic end that connects to the valve core 4. Specifically, the temperature control component 5 includes a heat-conducting temperature control seat, a temperature control medium disposed in the inner cavity of the temperature control seat, and a temperature control drive rod that is movably disposed in the temperature control seat. The end of the temperature control seat that extends into the temperature control mounting hole 16 is the sensing end, and the end of the temperature control drive rod that connects to the valve core 4 is the telescopic end. When the temperature changes, the temperature control medium in the inner cavity of the temperature control seat will drive the temperature control drive rod to perform telescopic movement through thermal expansion and contraction, thereby driving the valve core 4 to move.

[0044] like Figure 2 , 5 As shown, the valve core mounting bracket 2 where the inlet hole 22 is located has an inlet groove 25 on its side wall that connects the external flow channel 15 and the inlet hole 22. The bottom of the inlet groove 25 is provided with several filter protrusions 251 that are adapted to the inner wall of the tube-in-tube mounting end 11. A filter mesh is formed between two filter protrusions 251 to prevent large particles of impurities from entering.

[0045] like Figure 3 , 6As shown, a discharge groove 24 is provided on the side wall of the valve core mounting bracket 2 where the discharge hole 23 is located, connecting the external flow channel 15 and the discharge hole 23. A check valve assembly 6 is provided in the discharge groove 24 to prevent backflow from the discharge hole 23. The check valve assembly 6 includes a check valve diaphragm 61 and a check valve fixing member 62. The check valve diaphragm 61 has a thin sheet structure, with a diaphragm fixing part 611 that cooperates with the check valve fixing member 62 and a diaphragm check valve part 612 that seals the discharge hole 23. A retaining edge is provided at the end of the diaphragm fixing part 611. The check valve fixing member 62 is an arc-shaped fixing block. The left and right sides of this fixing block have extending locking portions 621. The left and right sides of the outlet groove 24 have locking grooves 241 that match the locking portions 621. The check valve fixing member 62 fixes the check valve diaphragm 61 in the outlet groove 24 via the diaphragm fixing portion 611. Simultaneously, the retaining edge of the diaphragm fixing portion 611 is clamped to the end face of the outlet groove 24 by the check valve fixing member 62, thus achieving quick installation of the check valve diaphragm 61. When liquid enters through the inlet hole 22, the diaphragm check portion 612 deforms and opens under the action of the liquid. When backflow occurs in the outer channel of the outlet end 13, the diaphragm check portion 612 is pressed against the outlet hole 23 under the action of the liquid, thereby preventing backflow in the outer channel.

[0046] Therefore, when the temperature control component 5 senses the hot water in the inner flow channel 14, its telescopic end (i.e., the temperature control drive rod) drives the valve core 4 to move upward and open the valve hole (liquid inlet hole 22), so that the liquid in the outer flow channel of the pipe-in-pipe installation end 11 can flow out from the liquid outlet end 13 after passing through the liquid inlet groove 25, the liquid inlet hole 22, the valve core installation cavity 21 (a gap is provided between the valve core 4 and the temperature control component 5), the liquid outlet hole 23, and the liquid outlet groove 24 in sequence, thus realizing the liquid outlet of the outer flow channel 15.

[0047] When the temperature control component 5 does not sense hot water in the inner flow channel 14, its telescopic end (i.e., the temperature control drive rod) drives the valve core 4 to move down and close the valve hole (liquid inlet hole 22). In addition, in order to make the valve core 4 close more quickly, a reset member 7 for resetting the valve core 4 is provided between the valve cover 3 and the valve core 4. The reset member 7 is preferably a spring.

[0048] like Figure 4As shown, a guide limiting structure is provided between the inner wall of the valve core mounting end 12 and the valve core mounting bracket 2. This guide limiting structure includes at least one guide limiting protrusion 121 and a corresponding guide limiting groove 29. Specifically, guide limiting grooves 29 are respectively opened on the left and right sides of the valve core mounting bracket 2. The guide limiting grooves 29 are strip-shaped and arranged axially. A corresponding guide limiting protrusion 121 is provided on the inner wall of the valve core mounting end 12. The valve core mounting bracket 2 can be inserted into the valve core mounting end 1 along the guide limiting protrusion 121, thereby fixing the circumferential position of the valve core mounting bracket 2. Simultaneously, an isolation outer seal 8 is provided between the guide limiting protrusion 121 and the guide limiting groove 29. To enhance the separation effect of the external flow channel, in this embodiment, an external sealing protrusion 122 is also provided on the guide limiting protrusion 121, and an external sealing groove 30 is also provided in the guide limiting groove 29. The mounting surfaces of the external sealing protrusion 122 and the external sealing groove 30 are both inclined, and the external sealing element 8 is provided between the external sealing protrusion 122 and the external sealing groove 30, thereby improving the sealing performance of the valve core mounting bracket 2 after installation.

[0049] To prevent the inlet hole 22 and outlet hole 23 of the valve core mounting bracket 2 from being installed in reverse, the left and right sides of the guide limiting protrusion 12 of the valve core mounting end 12 are designed with different shapes. Simultaneously, both guide limiting protrusions 12 are eccentrically positioned towards the same side of the valve core mounting end, ensuring that the valve core mounting bracket 2 can only be installed correctly and not backwards, thus preventing mistaken installation. Furthermore, the surface of the valve core mounting end 12 is also provided with an arrow mark 100, the direction of which indicates the flow direction of the outer channel, thereby enabling accurate and quick installation of the valve core mounting bracket 2.

[0050] The bottom of the valve core mounting end 12 is provided with a temperature control mounting hole 16 that connects to the inner flow channel 14. The bottom of the valve core mounting bracket 2 or the outer side of the sensing end of the temperature control component 5 is provided with an inner sealing element 9 for sealing the temperature control mounting hole 16. The inner sealing element 9 is annular, and the outer sealing elements 8 are strip-shaped and distributed on both sides of the inner sealing element 9. In this embodiment, the inner sealing element 9 and the two outer sealing elements 8 are integrally formed to form a component made of plastic or rubber, which reduces production costs and simplifies the installation process.

[0051] The side wall of the valve core mounting bracket 2 has a sealing protrusion 26 adapted to the pipe-in-pipe mounting end 11 and a second sealing groove located above the sealing protrusion 26. A first sealing groove is provided in the sealing protrusion 26, and a first sealing ring 27 is provided in the first sealing groove. A second sealing ring 28 for cooperating with the sealing valve cover 3 is provided in the second sealing groove.

[0052] The valve cover 3 has an external thread adapted to the internal thread of the insert and a drive part capable of rotating itself. The drive part is preferably an external polygonal structure or an internal polygonal structure to facilitate tool disassembly and assembly. When the valve cover 3 fixes the valve core mounting bracket 2 on the valve core mounting end 12, the first sealing ring 27 is connected to the inner wall of the pipe-in-pipe mounting end 11, and the second sealing ring 28 is connected to the inner wall of the valve cover 3, thereby increasing the sealing performance.

[0053] In addition, the first sealing groove and the outer sealing groove 30 are connected, which enables the upper end of the outer sealing element 8 to be connected to the first sealing ring 27, further increasing the sealing performance at the connection of the valve core mounting bracket 2.

[0054] In this embodiment, the bottom of the valve core mounting bracket 2 is sealed by the inner sealing element 9, the side walls of the valve core mounting bracket 2 are sealed by the outer sealing elements 8 on both sides, and the top of the valve core mounting bracket 2 is sealed by the first sealing ring 27, thereby effectively separating the external flow channel space at the valve core mounting end 12, making the control of the external flow channel more precise.

[0055] In this embodiment, the hot water outlet system is applied. Since the valve core 4 is initially positioned to seal the inlet hole 22, when the water outlet device such as the faucet or shower head connected to the outlet is opened, the inner flow channel flows out first, while the outer flow channel is closed. Since there is relatively little cold water in the inner flow channel, the method of prioritizing water flow from the inner flow channel allows users to quickly obtain hot water and reduces the waiting time for hot water.

[0056] When the temperature control component 5 senses hot water, it drives the valve core 32 to move outward and open the outer flow channel, thus delaying the liquid output from the outer flow channel. Initially, the water temperature curve after the cold water in the outer flow channel and the hot water in the inner flow channel meet is relatively stable, thereby utilizing the cold water in the outer channel and saving water resources. When the outer flow channel also outputs hot water, it can meet the user's normal water needs, thus enabling the user to have a fast and comfortable water experience.

[0057] Furthermore, when the temperature control component 5 senses hot water, the movement distance of the temperature control drive rod varies depending on the temperature of the hot water, thereby enabling the drive valve core 32 to adjust the liquid inlet flow rate through the external liquid inlet 311 to a certain extent. When the temperature of the hot water sensed by the temperature control component 5 is low, the movement distance of the valve core 32 is short, and the liquid outlet flow rate through the external liquid inlet 311 is low; when the temperature of the hot water sensed by the temperature control component 5 is high, the movement distance of the valve core 32 is large, and the liquid outlet flow rate through the external liquid inlet 311 is larger. After merging with the hot water in the inner flow channel, the liquid flows out together, greatly reducing the impact of the temporarily stored cold water in the outer flow channel on the outlet water temperature.

[0058] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A pipe-in-pipe temperature control adapter valve, characterized in that, include: The temperature control valve body (1) has at least one tube-in-tube mounting end (11) for connecting tube-in-tube, a valve core mounting end (12) and a liquid outlet end (13), an inner flow channel (14) and an outer flow channel (15) are formed between the tube-in-tube mounting end (11) and the liquid outlet end (13), and the valve core mounting end (12) is connected to the outer flow channel (15); A valve core mounting bracket (2) is installed on the valve core mounting end (12) and used to separate the external flow channel (15), and the valve core mounting bracket (2) is provided with at least one valve hole that connects to the external flow channel (15); Valve cover (3) is used to fix the valve core mounting bracket (2) on the valve core mounting end (12); The valve core (4) is movably mounted on the valve core mounting bracket (2); as well as Temperature control assembly (5), mounted on the valve core mounting bracket (2), has a sensing end that extends into the inner flow channel (14) and a telescopic end that connects to the valve core (4). When the temperature control component (5) senses the hot water in the inner flow channel (14), its telescopic end drives the valve core (4) to open the valve hole, thereby realizing the liquid discharge from the outer flow channel (15).

2. The pipe-in-pipe temperature control adapter valve according to claim 1, characterized in that: The valve core mounting bracket (2) has a valve core mounting cavity (21) for mounting the valve core (4) in the middle. The valve orifice includes at least one inlet orifice (22) and at least one outlet orifice (23), which are located on both sides of the valve core mounting cavity (21), and the valve core (4) can control the opening and closing of the inlet orifice (22) and / or the outlet orifice (23).

3. A pipe-in-pipe temperature control adapter valve according to claim 2, characterized in that: The valve core mounting bracket (2) where the liquid outlet (23) is located has a liquid outlet groove (24) that connects the external flow channel (15) and the liquid outlet (23). A check valve assembly (6) is provided in the liquid outlet groove (24) to prevent backflow of the liquid outlet (23).

4. A pipe-in-pipe temperature control adapter valve according to claim 3, characterized in that: The check valve assembly (6) includes a check valve diaphragm (61) and a check valve fixing member (62). The check diaphragm (61) has a diaphragm fixing part (611) that cooperates with the check fixing member (62) and a diaphragm check part (612) that seals the liquid outlet (23). The check fixing member (62) has a snap-fit ​​part (621) extending on the left and right sides. The liquid outlet groove (24) has snap-fit ​​grooves (241) on the left and right sides that are adapted to the snap-fit ​​part (621). The check fixing member (62) fixes the check diaphragm (61) in the liquid outlet groove (24) through the diaphragm fixing part (611).

5. A pipe-in-pipe temperature control adapter valve according to claim 2, characterized in that: The valve core mounting bracket (2) where the liquid inlet hole (22) is located has a liquid inlet groove (25) that connects the external flow channel (15) and the liquid inlet hole (22). The bottom of the liquid inlet groove (25) is provided with a number of filter protrusions (251) that are adapted to the inner wall of the tube-in-tube mounting end (11). A filter mesh is formed between two filter protrusions (251).

6. A pipe-in-pipe temperature control adapter valve according to claim 1, characterized in that: The side wall of the valve core mounting bracket (2) has a sealing protrusion (26) that is adapted to the pipe-in-pipe mounting end (11). A first sealing groove is provided in the sealing protrusion (26), and a first sealing ring (27) is provided in the first sealing groove. Or / and, the side wall of the valve core mounting bracket (2) is provided with a second sealing groove, and a second sealing ring (28) for cooperating to seal the valve cover (3) is provided in the second sealing groove.

7. A pipe-in-pipe temperature control adapter valve according to claim 1, characterized in that: A reset element (7) for resetting the valve core (4) is also provided between the valve cover (3) and the valve core (4).

8. A pipe-to-pipe temperature control adapter valve according to any one of claims 1-7, characterized in that: A guide limiting structure is provided between the inner wall of the valve core mounting end (12) and the valve core mounting bracket (2). The guide limiting structure includes at least one guide limiting protrusion (121) and a corresponding guide limiting groove (29).

9. A pipe-in-pipe temperature control adapter valve according to claim 8, characterized in that: The valve core mounting bracket (2) has guide limiting grooves (29) on its left and right sides respectively, and a corresponding guide limiting protrusion (121) is provided on the inner wall of the valve core mounting end (12). An isolation outer seal (8) is provided between the guide limiting protrusion (121) and the guide limiting groove (29).

10. A pipe-in-pipe temperature control adapter valve according to claim 9, characterized in that: The valve core mounting end (12) has a temperature control mounting hole (16) that connects to the inner flow channel (14). The bottom of the valve core mounting bracket (2) or the outside of the sensing end of the temperature control component (5) is provided with an inner sealing element (9) for sealing the temperature control mounting hole (16). The inner sealing element (9) and the outer sealing element (8) are integrally formed.

Images