Multipurpose pipe joint assembly with temperature detection hole

Abstract

A multipurpose pipe joint assembly with a temperature detection hole comprises a straight pipe fitting, a bent pipe fitting and a quick connecting piece. A connecting hole used for being connected with a temperature detection meter is formed in the side wall of the straight pipe fitting in a penetrating mode, and an internal thread and an embedding groove are arranged in the connecting hole. The internal thread can be in threaded fit with an external thread on the temperature detection meter, so that the straight pipe fitting is connected with the temperature detection meter; a part of the sealing piece is embedded in the embedding groove, the remaining part of the sealing piece extends into the connecting hole, and the remaining part of the sealing piece can be attached to the surface of the temperature detection meter, so that sealing fit between the straight pipe fitting and the temperature detection meter is achieved; according to the utility model, the connecting hole is arranged on the straight pipe fitting in the assembly, and the internal thread and the sealing piece are arranged in the connecting hole, so that the temperature detection meter can be directly connected to the straight pipe fitting, other adapters are not needed, and the firmness and the sealing performance of the temperature detection meter after installation can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of pipe joints, in particular to a multi-purpose pipe joint component with a temperature detection hole. Background Art

[0002] A joint is a component used to connect water pipes. Water pipe joints can be divided into: externally threaded end-connected water pipe joints, ferrule-type water pipe joints, and self-fixing water pipe joints according to their usage. Among them, externally threaded end-connected water pipe joints are usually die-cast with zinc alloy materials, and the surface is galvanized, frosted, or chrome-plated. They have a tight structure, no pores, and high strength. In the actual application of pipe joints, they are divided into straight pipe joints and elbow pipe joints according to their shapes, and users can choose to install them according to their needs.

[0003] Since pipe joints need to be used in various fields and each field has diverse requirements for pipe joints, there are some pipe joints with special functions on the market, including pipe joints that can be installed with temperature detectors. The general setting method of this type of pipe joint is to open a through hole on the surface of the pipe joint, so that the temperature detector can be connected to the through hole through an adapter, and the probe of the temperature detector is extended into the pipe joint to detect the temperature of the liquid passing through the pipe joint.

[0004] For example, the Chinese patent with patent number ZL202220214982.4 discloses: "A water temperature sensor straight-through connector, including a tube body and a temperature sensor, the tube body including a plastic joint and two assembly tubes, the two assembly tubes are respectively installed at both ends of the plastic joint, the top of the plastic joint extends out of a mounting block, the temperature sensor is installed in the mounting block, and one end of the temperature sensor extends into the plastic joint. The utility model assembles the temperature sensor to the feeding joint and directly contacts the cooling water. Due to the strong heat insulation ability of the plastic joint, the external temperature has little effect on the temperature of the engine cooling water, ensuring that the sensor senses the temperature of the cooling water more accurately. The tube body provided in the utility model can be closely integrated with the installation space of the engine, and the shape is determined according to the spatial position, wiring and pipelines to make the layout more reasonable.".

[0005] Including the solution described in the above patent, there is a problem with the pipe joints in the prior art that can be used to install temperature detectors. That is, when the temperature detectors in the prior art are connected to these open pipe joints, an adapter is required to achieve the connection to ensure the firmness and sealing of the connection between the temperature detector and the pipe joint. However, this makes the entire installation process too complicated, and the setting of the adapter will also occupy additional space. Similarly, this type of pipe joint that can be used to install temperature detectors has another problem like other pipe joints on the market, which is its shape and the threaded fixation thereon for connection. Therefore, it can only serve a single purpose and has poor applicability. Summary of the invention

[0006] In order to overcome the shortcomings of the pipe joints in the prior art that can be connected to a temperature detector, such as the complicated connection mode and the single purpose, the utility model provides a multi-purpose pipe joint assembly with a temperature detection hole.

[0007] The utility model solves the technical problem by providing a multi-purpose pipe joint assembly with a temperature detection hole, comprising:

[0008] A straight pipe member, comprising a first threaded column located at one end thereof, and a second threaded column located at the other end thereof;

[0009] A bent pipe fitting, comprising a third threaded column at one end thereof and a first threaded hole at the other end thereof, wherein the first threaded column can form a threaded fit with the first threaded hole to achieve connection between the straight pipe fitting and the bent pipe fitting;

[0010] A quick connector, comprising a second threaded hole at one end thereof and a pipe connection column at the other end thereof for connecting a water pipe, wherein the second threaded hole can form a threaded fit with the second threaded column to achieve connection between the quick connector and the straight pipe;

[0011] A connecting hole for connecting a temperature detector is provided through the side wall of the straight pipe, and an internal thread and an embedding groove are provided in the connecting hole; the internal thread is provided close to the outside of the straight pipe, and the embedding groove is provided close to the inside of the straight pipe;

[0012] The internal thread can form a threaded match with the external thread on the temperature detector to achieve the connection between the straight pipe and the temperature detector;

[0013] It also includes a sealing member, part of which is embedded in the embedding groove, and the remaining part extends into the connecting hole. The remaining part of the sealing member can fit with the surface of the temperature detector to achieve a sealed fit between the straight pipe and the temperature detector.

[0014] Furthermore, the sealing member includes an embedding portion for cooperating with the embedding groove, and a fitting portion for fitting with the surface of the temperature detector, and a avoidance hole is provided at the center of the fitting portion, and a probe of the temperature detector can pass through the avoidance hole and extend into the straight pipe member;

[0015] The fitting portion is elastically deformable, and can be deformed under the action of an external force to flip inward relative to the embedded portion, and can elastically recover to flip outward relative to the embedded portion when the external force is removed.

[0016] Furthermore, the fitting portion is arranged in a funnel shape toward the inside of the straight tube, and a circle of fitting inclined surfaces is provided on the outer surface of the fitting portion close to the outside of the straight tube, and the fitting inclined surfaces are arranged on the peripheral side edges of the avoidance hole.

[0017] Furthermore, a connecting boss is protruding from the side of the straight pipe, the connecting hole passes through the connecting column, and the outer opening of the connecting hole is located on the end face of the connecting boss.

[0018] Furthermore, the first threaded column and the third threaded column are consistent in shape and size.

[0019] Furthermore, a plurality of fitting grooves are provided at intervals on the surface of the pipe connection column, a circle of shrinking grooves is provided at the middle position of the quick connector, and a circle of expanding ribs is provided protrudingly between the shrinking grooves and the pipe connection column, the diameter of the shrinking grooves on the quick connector is smaller than the diameter of the pipe connection column, and the diameter of the expanding ribs on the quick connector is larger than the diameter of the pipe connection column.

[0020] Furthermore, a circle of expanding slope is provided on the side of the expanding rib connected to the pipe connection column. The expanding slope is inclined from the pipe connection column toward the expanding rib, and the diameter of the expanding slope gradually increases from the end close to the pipe connection column to the end close to the expanding rib.

[0021] Furthermore, when the water pipe is hot-melted and sleeved onto the quick connector, the end of the water pipe will first pass through the sleeve column and come to the flaring slope. Under the guidance of the flaring slope, the diameter of the water pipe mouth will gradually expand. When the water pipe mouth passes the flaring rib and moves to the shrinking groove, the effect of the flaring rib is lost and the diameter of the water pipe mouth is reduced. When the hot-melt water pipe cools down, the water pipe mouth will be tightened at the shrinking groove, and the part of the water pipe wall sleeved on the sleeve column will fit tightly into the fitting groove as it cools.

[0022] Furthermore, a blocking cover is included, on which a third threaded hole is provided. The third threaded hole can form a threaded fit with the second threaded column to achieve a connection between the blocking cover and the straight pipe fitting, and the blocking cover can block one end of the straight pipe fitting on which the second threaded column is provided.

[0023] Installation method of the utility model:

[0024] Since there are straight pipe fittings, bent pipe fittings and quick connectors, when the straight pipe fittings are used alone, connected with one of the other two, or all three are connected together, a variety of usage and installation methods can be derived;

[0025] When the straight pipe fitting is used alone, the first threaded column and the second threaded column at both ends of the straight pipe fitting form a threaded fit with the other pipe connectors in the pipeline, so that the straight pipe fitting is connected to the pipeline, and then the probe part of the temperature detector is inserted into the connecting hole, and the external thread on the temperature detector is threadedly matched with the internal thread in the connecting hole. At this time, the temperature detector is connected to the pipeline, and in the process of the temperature detector being inserted into the straight pipe fitting, the temperature detector can force the fitting part of the sealing member to turn inward, and at the same time, the fitting part will also be tightly fitted with the surface of the temperature detector, so as to achieve a sealing fit between the straight pipe fitting and the temperature detector.

[0026] When the straight pipe fitting and the bent pipe fitting are connected for use, the third threaded column and the second threaded column located at both ends of the connection between the two are connected to the pipeline in the form of a bent pipe joint, which not only plays the role of a bent pipe joint, but also ensures the detection of the temperature in the pipeline after the temperature detector is connected to the straight pipe fitting;

[0027] When the straight pipe fitting is connected with the quick connector, the two can be connected to the pipeline through the first threaded column at one end after the two are connected, and the water pipe can be hot-melted and sleeved on the sleeve column at the other end of the two, so that a branch can be connected in the pipeline, and when the temperature detector is connected to the straight pipe fitting, the temperature in the pipeline can be detected;

[0028] When the straight pipe fitting, the bent pipe fitting and the quick connector are connected for use, the three can be connected to the pipeline in the form of a bent pipe joint through the third threaded column at one end of the three connected, and the water pipe can be hot-melted and sleeved on the sleeve column at the other end of the three, so that a branch can be connected in the form of a bent pipe. When the temperature detector is connected to the straight pipe fitting, the temperature in the pipeline can be detected;

[0029] In addition to the above-mentioned usage and installation methods, due to the setting of the sealing cover, the straight pipe fitting and the sealing cover can be installed in combination, the straight pipe fitting with the sealing cover can be connected to the pipeline, and then the temperature detector can be connected to the straight pipe fitting. Since one end of the straight pipe fitting is blocked by the sealing cover, the straight pipe fitting is now connected to the pipeline as an accessory for connecting the temperature detector.

[0030] The beneficial effects of the utility model are:

[0031] 1. A connecting hole is provided on the straight pipe in the assembly, and an internal thread and a sealing member are provided in the connecting hole. The internal thread is used to connect the temperature detector, and the sealing member is used to ensure the sealing match with the temperature detector, so that the temperature detector can be directly connected to the straight pipe without other adapters, and the firmness and sealing of the temperature detector after installation can be ensured;

[0032] 2. Since the assembly consists of three parts: a straight pipe, a bent pipe and a quick connector, the three parts can be combined in different ways in this solution to play different roles after the assembly is connected to the pipeline, such as a straight pipe joint or a bent pipe joint, so that the assembly can not only be installed with a temperature detector, but also its use is effectively expanded;

[0033] 3. A blocking cover is also provided, by which one end of the straight pipe can be blocked. Therefore, when the straight pipe is installed in the pipeline and the temperature detector is installed, the straight pipe is only used as an accessory for installing the temperature detector, thereby further expanding the purpose of this solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the utility model.

[0035] Figure 2 It is a disassembly schematic diagram of the utility model.

[0036] Figure 3 It is a structural schematic diagram of the straight pipe fitting in the utility model.

[0037] Figure 4 It is a cross-sectional view of the straight pipe fitting in the utility model.

[0038] Figure 5 It is a structural schematic diagram of the sealing member in the utility model.

[0039] Figure 6 It is a structural schematic diagram of the bent pipe fitting in the utility model.

[0040] Figure 7 It is a structural schematic diagram of the quick connector in the utility model.

[0041] Figure 8 It is a schematic diagram of the connection between the straight pipe fitting and the plugging cover in the utility model.

[0042] Fig. 9 It is a schematic diagram of the disassembly of the straight pipe fitting and the blocking cover in the utility model.

[0043] Fig.10 It is a schematic diagram of the connection between the straight pipe fitting and the temperature detector in the utility model.

[0044] Fig.11 yes Fig.10 A magnified schematic diagram of center A.

[0045] Numbers in the figure: 1. straight pipe fitting; 2. first threaded column; 3. second threaded column; 4. bent pipe fitting; 5. third threaded column; 6. first threaded hole; 7. quick connector; 8. second threaded hole; 9. pipe connection column; 10. connecting hole; 11. internal thread; 12. embedding groove; 13. sealing member; 14. embedding part; 15. fitting part; 16. avoidance hole; 17. fitting slope; 18. connecting boss; 19. fitting groove; 20. shrinking groove; 21. expansion rib; 22. expansion slope; 23. sealing cover; 24. third threaded hole; 100. temperature detector. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] It should be understood that although the terms upper, middle, lower, top, end, etc. appear in this article to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for easy understanding, and are not used to define any direction or order limitation.

[0048] Example 1

[0049] Combination Figures 1 to 7 and Figure 10 to Figure 11A multi-purpose pipe joint assembly with a temperature detection hole is shown, comprising a straight pipe 1, a bent pipe 4 and a quick connector 7; the straight pipe 1 comprises a first threaded column 2 located at one end thereof, and a second threaded column 3 located at the other end thereof; the bent pipe 4 comprises a third threaded column 5 located at one end thereof, and a first threaded hole 6 located at the other end thereof, the first threaded column 2 being able to form a threaded fit with the first threaded hole 6 to achieve a connection between the straight pipe 1 and the bent pipe 4; the quick connector 7 comprises a second threaded hole 8 located at one end thereof, and a pipe connector column 9 for connecting a water pipe located at the other end thereof, the second threaded hole 8 being able to form a threaded fit with the second threaded column 3 to achieve a connection between the quick connector 7 and the straight pipe 1; A connecting hole 10 for connecting the temperature detector 100 is provided on the side wall of the straight pipe 1, and an internal thread 11 and an embedding groove 12 are provided in the connecting hole 10; the internal thread 11 is arranged close to the outside of the straight pipe 1, and the embedding groove 12 is arranged close to the inside of the straight pipe 1; the internal thread 11 can form a threaded fit with the external thread on the temperature detector 100 to achieve the connection between the straight pipe 1 and the temperature detector 100; it also includes a sealing member 13, part of which is embedded in the embedding groove 12, and the remaining part extends into the connecting hole 10, and the remaining part of the sealing member 13 can form a fit with the surface of the temperature detector 100 to achieve a sealed fit between the straight pipe 1 and the temperature detector 100.

[0050] Combination Figure 5 , Fig.10 and Fig.11 As shown, in this embodiment, the sealing member 13 includes an embedding portion 14 for cooperating with the embedding groove 12, and a fitting portion 15 for fitting with the surface of the temperature detector 100, and a avoidance hole 16 is provided at the center of the fitting portion 15, and the probe of the temperature detector 100 can pass through the avoidance hole 16 and extend into the straight pipe 1; the fitting portion 15 can be elastically deformed, and the fitting portion 15 can be deformed under the action of an external force to flip inward relative to the embedding portion 14, and elastically recover when the external force is lost to flip outward relative to the embedding portion 14.

[0051] Combination Figure 5 , Fig.10 and Fig.11 As shown, the fitting portion 15 is arranged in a funnel shape toward the inside of the straight tube 1, and a circle of fitting slopes 17 are provided on the outer surface of the fitting portion 15 close to the outside of the straight tube 1, and the fitting slopes 17 are arranged on the peripheral side edges of the avoidance hole 16.

[0052] Combination Figures 1 to 4As shown, in this embodiment, a connecting boss 18 is protruding from the side of the straight pipe 1 , the connecting hole 10 passes through the connecting column, and the outer opening of the connecting hole 10 is located on the end face of the connecting boss 18 .

[0053] Combination Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the first threaded column 2 and the third threaded column 5 are consistent in shape and size.

[0054] Among them Figure 7 As shown in the figure, in this embodiment, a plurality of fitting grooves 19 are provided at intervals on the surface of the pipe connection column 9, a circle of shrinking grooves 20 is provided at the middle position of the quick connector 7, and a circle of expanding ribs 21 is protruding between the shrinking grooves 20 and the pipe connection column 9. The diameter of the shrinking grooves 20 on the quick connector 7 is smaller than the diameter of the pipe connection column 9, and the diameter of the expanding ribs 21 on the quick connector 7 is larger than the diameter of the pipe connection column 9.

[0055] Among them Figure 7 As shown in the figure, in this embodiment, a circle of expanding slope 22 is further provided on the side of the expanding rib 21 connected to the pipe connection column 9. The expanding slope 22 is inclined from the pipe connection column 9 toward the expanding rib 21, and the diameter of the expanding slope 22 gradually increases from the end close to the pipe connection column 9 to the end close to the expanding rib 21.

[0056] In this embodiment, when the water pipe is hot-melted and sleeved onto the quick connector 7, the end of the water pipe will first pass through the sleeve column and come to the flaring slope 22. Under the guidance of the flaring slope 22, the diameter of the water pipe mouth will gradually expand. When the water pipe mouth passes the flaring rib 21 and moves to the shrinking groove 20, the effect of the flaring rib 21 is lost and the diameter of the water pipe mouth is reduced. When the hot-melt water pipe cools down, the water pipe mouth will be tightened at the shrinking groove 20, and the part of the water pipe wall sleeved on the sleeve column will fit tightly into the fitting groove 19 as it cools.

[0057] The installation method of this embodiment is as follows:

[0058] Since the straight pipe 1, the bent pipe 4 and the quick connector 7 are provided, a variety of usage and installation methods can be derived when the straight pipe 1 is used alone, when the straight pipe 1 is connected with one of the other two, or when the three are connected together.

[0059] When the straight pipe fitting 1 is used alone, the first threaded column 2 and the second threaded column 3 located at both ends of the straight pipe fitting 1 form a threaded fit with the other pipe connectors in the pipeline, so as to connect the straight pipe fitting 1 to the pipeline, and then the probe part of the temperature detector 100 is inserted into the connecting hole 10, and the external thread on the temperature detector 100 is threadedly matched with the internal thread 11 in the connecting hole 10. At this time, the temperature detector 100 is connected to the pipeline, and in the process of the temperature detector 100 being inserted into the straight pipe fitting 1, the temperature detector 100 can force the fitting part 15 of the sealing part 13 to turn inward, and at the same time, the fitting part 15 will also be tightly fitted with the surface of the temperature detector 100, so as to achieve a sealing fit between the straight pipe fitting 1 and the temperature detector 100;

[0060] When the straight pipe 1 and the bent pipe 4 are connected for use, the third threaded column 5 and the second threaded column 3 located at both ends of the connection between the two enable the two to be connected to the pipeline in the form of a bent pipe joint, which not only plays the role of a bent pipe joint, but also ensures the detection of the temperature in the pipeline after the temperature detector 100 is connected to the straight pipe 1;

[0061] When the straight pipe 1 and the quick connector 7 are connected for use, the two can be connected to the pipeline through the first threaded column 2 at one end after the two are connected, and the water pipe can be hot-melted and sleeved on the sleeve column at the other end of the two, so that a branch can be connected in the pipeline, and when the temperature detector 100 is connected to the straight pipe 1, the temperature in the pipeline can be detected;

[0062] When the straight pipe fitting 1, the bent pipe fitting 4 and the quick connector 7 are connected for use, the three can be connected to the pipeline in the form of a bent pipe joint through the third threaded column 5 located at one end of the three after the connection, and the water pipe can be hot-melted and sleeved on the sleeve column at the other end of the three, so as to connect a branch in the form of a bent pipe. When the temperature detector 100 is connected to the straight pipe fitting 1, the detection of the temperature in the pipeline can be guaranteed.

[0063] The advantages of this embodiment are: providing a component in which a straight pipe fitting is used to install a temperature detector, and relying on the threads and seals in the connecting hole of the straight pipe fitting, the connection firmness and sealing of the temperature detector can be ensured, while the difficulty of installing the temperature detector is greatly reduced; and due to the presence of the bent pipe fitting and the quick connector, the solution of this embodiment can serve multiple purposes.

[0064] Example 2

[0065] Combination Figures 8 to 9As shown, the main difference between this embodiment and the above-mentioned embodiment 1 is that it also includes a sealing cover 23, and a third threaded hole 24 is provided on the sealing cover 23. The third threaded hole 24 can form a threaded fit with the second threaded column 3 to achieve the connection between the sealing cover 23 and the straight pipe 1, and the sealing cover 23 can block one end of the straight pipe 1 where the second threaded column 3 is provided.

[0066] The installation method of this embodiment differs from that of the above-mentioned embodiment 1 in that: in this embodiment, due to the provision of the blocking cover 23, the straight pipe fitting 1 and the blocking cover 23 can be assembled and assembled, and then the straight pipe fitting 1 with the blocking cover 23 can be connected to the pipeline, and then the temperature detector 100 can be connected to the straight pipe fitting 1. Since one end of the straight pipe fitting 1 is blocked by the blocking cover 23, the straight pipe fitting 1 is now connected to the pipeline as an accessory for connecting the temperature detector 100.

[0067] The remaining structures and methods of this embodiment are consistent with those of the above-mentioned embodiment 1 and will not be described again here.

[0068] The advantage of this embodiment is that an additional sealing cover is provided for blocking one end of the straight pipe, so that the solution in this embodiment can not only be connected to the pipeline as a pipe connector, but also can be connected to the pipeline only as an accessory for installing a temperature detection needle, making the solution more versatile.

[0069] The above specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A multi-purpose pipe joint assembly with a temperature detection hole, comprising: A straight pipe (1) comprising a first threaded column (2) located at one end thereof and a second threaded column (3) located at the other end thereof; A bent pipe member (4), comprising a third threaded column (5) located at one end thereof, and a first threaded hole (6) located at the other end thereof, wherein the first threaded column (2) can form a threaded fit with the first threaded hole (6) to achieve connection between the straight pipe member (1) and the bent pipe member (4); A quick connector (7) comprising a second threaded hole (8) at one end thereof and a pipe connection column (9) at the other end thereof for connecting a water pipe, wherein the second threaded hole (8) can form a threaded fit with the second threaded column (3) to achieve connection between the quick connector (7) and the straight pipe (1); Features: A connecting hole (10) for connecting a temperature detector (100) is provided through the side wall of the straight pipe (1), and an internal thread (11) and an embedding groove (12) are provided in the connecting hole (10); the internal thread (11) is provided close to the outside of the straight pipe (1), and the embedding groove (12) is provided close to the inside of the straight pipe (1); The internal thread (11) can form a threaded fit with the external thread on the temperature detector (100) to achieve connection between the straight pipe (1) and the temperature detector (100); It also includes a sealing member (13), part of which is embedded in the embedding groove (12), and the remaining part extends into the connecting hole (10). The remaining part of the sealing member (13) can fit with the surface of the temperature detector (100) to achieve a sealed fit between the straight pipe member (1) and the temperature detector (100).

2. A multi-purpose pipe joint assembly with a temperature detection hole according to claim 1, characterized in that: The sealing member (13) comprises an engaging portion (14) for cooperating with the engaging groove (12), and a fitting portion (15) for fitting with the surface of the temperature detector (100); a avoidance hole (16) is provided at the center of the fitting portion (15); a probe of the temperature detector (100) can pass through the avoidance hole (16) and extend into the straight pipe member (1); The fitting portion (15) can be elastically deformed, and can be deformed under the action of an external force to turn inward relative to the embedded portion (14), and can elastically recover to turn outward relative to the embedded portion (14) when the external force is lost.

3. A multi-purpose pipe joint assembly with a temperature detection hole according to claim 2, characterized in that: The fitting portion (15) is arranged in a funnel shape toward the inside of the straight pipe (1), and a circle of fitting inclined surfaces (17) are provided on the outer surface of the fitting portion (15) close to the outside of the straight pipe (1), and the fitting inclined surfaces (17) are arranged on the peripheral side edges of the avoidance hole (16).

4. The multi-purpose pipe joint assembly with a temperature detection hole according to claim 1, characterized in that: The side surface of the straight pipe (1) is also provided with a connecting boss (18) protruding therefrom, the connecting hole (10) passes through the connecting column, and the outer opening of the connecting hole (10) is located on the end surface of the connecting boss (18).

5. The multi-purpose pipe joint assembly with a temperature detection hole according to claim 1, characterized in that: The first threaded column (2) and the third threaded column (5) are consistent in shape and size.

6. The multi-purpose pipe joint assembly with a temperature detection hole according to claim 1, characterized in that: The surface of the pipe connection column (9) is also provided with a plurality of fitting grooves (19) at intervals, a circle of shrinking grooves (20) is also provided at the middle position of the quick connection piece (7), and a circle of expanding ribs (21) is also protrudingly provided between the shrinking grooves (20) and the pipe connection column (9), the diameter of the shrinking grooves (20) on the quick connection piece (7) is smaller than the diameter of the pipe connection column (9), and the diameter of the expanding ribs (21) on the quick connection piece (7) is larger than the diameter of the pipe connection column (9).

7. A multi-purpose pipe joint assembly with a temperature detection hole according to claim 6, characterized in that: A circle of expanding slope (22) is also provided on the side of the expanding rib (21) connected to the pipe connection column (9). The expanding slope (22) is inclined from the pipe connection column (9) toward the expanding rib (21), and the diameter of the expanding slope (22) gradually increases from the end close to the pipe connection column (9) to the end close to the expanding rib (21).

8. The multi-purpose pipe joint assembly with a temperature detection hole according to claim 1, characterized in that: The invention also comprises a blocking cover (23), wherein the blocking cover (23) is provided with a third threaded hole (24), wherein the third threaded hole (24) can form a threaded fit with the second threaded column (3) to achieve a connection between the blocking cover (23) and the straight pipe (1), and the blocking cover (23) can block one end of the straight pipe (1) provided with the second threaded column (3).

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