Pipeline observation structure for beverage production

Abstract

The utility model discloses a pipeline observation structure for beverage production, which comprises two pipeline joints arranged at intervals and two groups of clamping components, a transparent observation pipe is butted between the two pipeline joints, and a butting ring is arranged at one end of each pipeline joint deviating from the transparent observation pipe. The clamping assemblies are used for clamping and fixing the corresponding butt joint rings and a flange of an external pipeline, each clamping assembly comprises two clamping pieces and a locking device, one ends of the two clamping pieces are rotationally connected, the other ends of the two clamping pieces can relatively rotate to be opened or closed, the two clamping pieces define a containing hole, and the locking device is arranged in the containing hole. The surfaces, facing the containing hole, of the two clamping pieces are provided with clamping grooves, the clamping grooves are arranged in an arc shape, and the locking device is used for closing and locking the other ends of the two clamping pieces so that the two opposite side walls of the clamping grooves can clamp and fix the butt joint ring and a flange of an external pipeline. The pipeline observation structure for beverage production provided by the utility model can be more conveniently connected with an external pipeline, and is more convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of beverage production technology, and in particular to a pipeline observation structure for beverage production. Background Technology

[0002] Currently, there is a wide variety of beverages on the market, such as coconut or other fruit and plant protein drinks, whole grain drinks, fruit vinegar drinks such as plum or apple, and carbonated drinks such as soda or cola. In beverage production lines, various devices are connected by pipes to transport liquids. These pipes are generally made of stainless steel. However, stainless steel pipes are not transparent, so the flow of the liquid inside cannot be directly observed. To observe the flow of the liquid, observation pipes are usually installed on the pipeline. However, existing observation pipes are generally fixed to the stainless steel pipes with flanges and multiple bolts, which is relatively inconvenient to install. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a pipe observation structure for beverage production, which allows for easier connection to external pipes and facilitates installation.

[0004] According to an embodiment of the present invention, a pipe observation structure for beverage production includes two spaced-apart pipe joints and two sets of clamping assemblies. A transparent observation tube is connected between the two pipe joints. A docking ring is provided at the end of each pipe joint facing away from the transparent observation tube. The clamping assemblies are used to clamp and fix the corresponding docking ring to the flange of an external pipe so that the docking ring is connected to the flange of the external pipe. Each set of clamping assemblies includes two clamping members and a locking device. One end of the two clamping members is rotatably connected, and the other end of the two clamping members can rotate relative to each other to open or close. The two clamping members surround to form a receiving hole for the pipe joint and the external pipe to pass through. The surfaces of the two clamping members facing the receiving hole are provided with clamping grooves. The clamping grooves are arc-shaped and are used for the insertion of the docking ring and the flange of the external pipe. The locking device is used to close and lock the other ends of the two clamping members so that the opposite side walls of the clamping grooves clamp and fix the docking ring and the flange of the external pipe.

[0005] According to an embodiment of the present invention, a pipeline observation structure for beverage production has at least the following beneficial effects: The transparent observation tube of the pipeline observation structure for beverage production provided by the present invention can be used by workers to observe the condition of the liquid inside the pipeline. Both pipeline joints of the pipeline observation structure can be installed onto an external pipeline using a clamping assembly. During the installation of the pipeline joint onto the external pipeline, it is only necessary to first align the mating ring of the pipeline joint with the flange of the external pipeline, then place the two clamping parts of the clamping assembly onto the flange of the external pipeline and the mating ring so that the mating ring and the flange of the external pipeline are inserted into the clamping groove of the clamping parts, and finally lock the two clamping parts with a locking device. This allows the opposite side walls of the clamping groove to clamp and fix the mating ring and the flange of the external pipeline. Thus, the operation of connecting and fixing the pipeline joint and the flange of the external pipeline with multiple bolts can be eliminated during the installation process, making it easier to connect the pipeline observation structure for beverage production to the external pipeline, making installation more convenient, and facilitating subsequent disassembly.

[0006] According to some embodiments of the present invention, two elastic sealing gaskets are also included, which are used to be disposed between the mating ring and the flange of the external pipe.

[0007] According to some embodiments of the present invention, the outer edge of the docking ring near the transparent observation tube is provided with a first chamfer or a first rounding, and the end of the docking ring near the transparent observation tube is used to abut against the side wall of the clamping groove.

[0008] According to some embodiments of this utility model, the locking device includes a locking bolt and a tightening nut. Each of the two clamping members has a protruding locking portion at its other end. The first locking portion has a clearance groove, and the second locking portion is rotatably connected to one end of the locking bolt. The locking bolt can rotate in and out of the clearance groove. The tightening nut is screwed to the locking bolt. When the locking bolt enters the clearance groove, the tightening nut abuts against the first locking portion. When the tightening nut is rotated and tightened, the two locking portions can move closer together.

[0009] According to some embodiments of the present invention, the two opposite ends of the transparent observation tube are inserted into the two pipe joints one by one, and the two pipe joints are connected and fixed by threaded fasteners. At least two threaded fasteners are provided and arranged around the circumference of the transparent observation tube.

[0010] According to some embodiments of this utility model, a sealing structure is provided between the transparent observation tube and the pipe joint.

[0011] According to some embodiments of the present invention, the pipe joint is provided with an annular slot, the transparent observation tube is inserted into the annular slot, and the sealing structure includes an elastic sealing ring, which is embedded between the side wall of the annular slot and the transparent observation tube.

[0012] According to some embodiments of this utility model, the pipe joint is a telescopic joint capable of axial expansion and contraction.

[0013] According to some embodiments of the present invention, the pipe joint includes an installation cylinder, a connecting cylinder, a gland, and an elastic sealing structure. One end of the installation cylinder is connected to the transparent observation tube, the elastic sealing structure is embedded in the other end of the installation cylinder, the connecting cylinder is slidably inserted into the elastic sealing structure, the connecting ring is disposed on the connecting cylinder, and the gland is sleeved on the connecting cylinder and can move along the connecting cylinder. The gland is used to press against the elastic sealing structure so that the elastic sealing structure squeezes the connecting cylinder.

[0014] According to some embodiments of the present invention, the pressure cap is screwed to the docking cylinder; or, the outer edge of the end of the pressure cap facing the docking ring is provided with a second chamfer or a second rounding, and the end of the pressure cap facing the docking ring is used to cooperate with the clamping member to abut against the elastic sealing structure.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the internal structure of a beverage production pipeline observation structure (when the pipeline joint is non-retractable) according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of a clamping assembly for observing a pipe structure used in beverage production, according to an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of a beverage production pipeline observation structure (when the pipeline joint is telescopic) according to an embodiment of the present invention.

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0022] Figure 6 for Figure 3 The diagram shows an external view of a pipe structure for beverage production according to an embodiment of the present invention.

[0023] Figure label:

[0024] Pipe fitting 100, connecting sleeve 110, connecting ring 111, first chamfer 1111, mounting sleeve 120, annular slot 121, gland 130, second chamfer 131, elastic sealing structure 140, V-ring seal 141, O-ring seal 142, clamping assembly 200, clamping part 210, receiving hole 210a, clamping groove 211, locking part 212, clearance groove 2121, locking device 220, locking bolt 221, tightening nut 222, transparent observation tube 300, elastic sealing gasket 410, elastic sealing ring 420, threaded fastener 500, external pipe 600, flange 610. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 3 , Figure 6 According to an embodiment of the present invention, a pipe observation structure for beverage production includes two spaced-apart pipe joints 100 and two sets of clamping assemblies 200. A transparent observation tube 300 is connected between the two pipe joints 100. A connecting ring 111 is provided at one end of the pipe joint 100 away from the transparent observation tube 300. The clamping assembly 200 is used to clamp and fix the corresponding connecting ring 111 to the flange 610 of the external pipe 600 so that the connecting ring 111 is connected to the flange 610 of the external pipe 600. Each set of clamping assemblies 200 includes two clamping members 210 and a locking device 220. The two clamping members 210... One end is rotatably connected, and the other ends of the two clamping members 210 can rotate relative to each other to open or close. The two clamping members 210 surround to form a receiving hole 210a for the pipe joint 100 and the external pipe 600 to pass through. The two clamping members 210 have a clamping groove 211 on the surface facing the receiving hole 210a. The clamping groove 211 is arc-shaped and is used for the insertion of the mating ring 111 and the flange 610 of the external pipe 600. The locking device 220 is used to close and lock the other ends of the two clamping members 210 so that the opposite side walls of the clamping groove 211 clamp and fix the mating ring 111 and the flange 610 of the external pipe 600.

[0030] The beverage production pipeline observation structure provided by this utility model has a transparent observation tube 300 that allows workers to observe the condition of the liquid inside the pipeline. Both pipeline joints 100 of this structure can be installed onto an external pipeline 600 using clamping components 200. During installation, the pipe joint 100 is first aligned with the flange 610 of the external pipeline 600, and then the two clamping members 210 of the clamping component 200 are fitted onto the flange 610 and the alignment ring 111 of the external pipeline 600. One position allows the mating ring 111 and the flange 610 of the external pipe 600 to be inserted into the clamping groove 211 of the clamping member 210. Finally, the two clamping members 210 are locked by the locking device 220, so that the opposite side walls of the clamping groove 211 clamp and fix the mating ring 111 and the flange 610 of the external pipe 600. Thus, the operation of connecting and fixing the pipe joint 100 and the flange 610 of the external pipe 600 with multiple bolts can be eliminated during the installation process, making it easier for the beverage production pipe observation structure to be connected to the external pipe 600, making installation more convenient, and also facilitating later disassembly.

[0031] Reference Figure 1 and Figure 3According to some embodiments of this utility model, two elastic sealing gaskets 410 are also included. The elastic sealing gaskets 410 are used to be disposed between the mating ring 111 and the flange 610 of the external pipe 600. Thus, after the pipe joint 100 is installed into the external pipe 600, the mating ring 111 and the flange 610 of the external pipe 600 can tightly compress the elastic sealing gaskets 410, thereby forming an effective seal and preventing leakage. At the same time, the deformation of the elastic sealing gaskets 410 generates a reverse elastic force, so that the opposite side walls of the clamping groove 211 can reliably clamp and fix the mating ring 111 and the flange 610 of the external pipe 600.

[0032] Reference Figure 3 and Figure 4 According to some embodiments of this utility model, the outer edge of the docking ring 111 near the transparent observation tube 300 is provided with a first chamfer 1111 or a first rounded corner. The end of the docking ring 111 near the transparent observation tube 300 is used to abut against the side wall of the clamping groove 211. With the first chamfer 1111 or the first rounded corner on the docking ring 111, during the process of installing the pipe joint 100 into the external pipe 600, the docking ring 111 and the flange 610 of the external pipe 600 can be more easily inserted into the clamping groove 211 of the clamping member 210. Then, during the process of the two clamping members 210 of the clamping assembly 200 coming together and clamping, the side wall of the clamping groove 211 can cooperate with the first chamfer 1111 or the first rounded corner, pushing the docking ring 111 and the flange 610 of the external pipe 600 to gradually approach each other to compress the elastic sealing gasket 410.

[0033] Reference Figure 2 and Figure 6 According to some embodiments of the present invention, the locking device 220 includes a locking bolt 221 and a tightening nut 222. The other ends of the two clamping members 210 are each provided with a locking part 212 protruding out. The first locking part 212 has a relief groove 2121. The second locking part 212 is rotatably connected to one end of the locking bolt 221. The locking bolt 221 can rotate in and out of the relief groove 2121. The tightening nut 222 is screwed to the locking bolt 221. When the locking bolt 221 enters the relief groove 2121, the tightening nut 222 abuts against the first locking part 212. When the tightening nut 222 is rotated and tightened, the two locking parts 212 can move closer to each other. Therefore, when the locking device 220 needs to lock the two clamping parts 210 of the clamping assembly 200, the locking bolt 221 can be rotated so that the locking bolt 221 passes through the relief groove 2121, and then the tightening nut 222 can be rotated and tightened to push the two locking parts 212 closer together, thereby causing the two clamping parts 210 to move closer together and lock. With the above settings, the locking device 220 is simple and convenient to operate.

[0034] Of course, it should be noted that the locking device 220 described above can also be configured in other ways. For example, the locking device 220 includes a rotating shaft and a locking bolt 221. The rotating shaft is rotatably mounted on one of the locking parts 212. One end of the locking bolt 221 passes through the rotating shaft and is screwed to the rotating shaft. The other end of the locking bolt 221 has an operating part. When the locking bolt 221 enters the relief groove 2121, the operating part abuts against the side wall of the relief groove 2121. By rotating the locking bolt 221, the two locking parts 212 can be pushed to move closer to each other.

[0035] Reference Figure 1 , Figure 3 and Figure 6 According to some embodiments of this utility model, the two opposite ends of the transparent observation tube 300 are inserted into two pipe joints 100 one by one. The two pipe joints 100 are connected and fixed together by threaded fasteners 500. At least two threaded fasteners 500 are provided and arranged around the circumference of the transparent observation tube 300. Through the above arrangement, the transparent observation tube 300 can be securely fixed to the two pipe joints 100. In addition, the threaded fasteners 500 can withstand tensile and bending forces.

[0036] Reference Figure 1 , Figure 3 and Figure 5 According to some embodiments of the present invention, a sealing structure is provided between the transparent observation tube 300 and the pipe joint 100 to improve the sealing performance between the transparent observation tube 300 and the pipe joint 100.

[0037] Reference Figure 5 According to some embodiments of the present invention, the pipe joint 100 is provided with an annular slot 121, the transparent observation tube 300 is inserted into the annular slot 121, and the sealing structure includes an elastic sealing ring 420. The elastic sealing ring 420 is embedded between the side wall of the annular slot 121 and the transparent observation tube 300. The elastic sealing ring 420 is a T-shaped sealing ring, with one end of the elastic sealing ring 420 facing the bottom of the annular slot 121 being larger than the other end, so that the transparent observation tube 300 can be inserted into the annular slot 121, and at the same time, the transparent observation tube 300 can tightly squeeze the elastic sealing ring 420 to form an effective seal.

[0038] It should be noted that the sealing structure described above can also be configured in other ways. For example, the sealing structure may include an elastic flat washer, which is disposed between the bottom wall of the annular slot 121 and the end face of the transparent observation tube 300.

[0039] It should be noted that in some other embodiments, the transparent observation tube 300 and the pipe joint 100 can also be fixed by adhesive.

[0040] It is conceivable that the beverage production pipeline observation structure needs to connect with two external pipes 600. The distance between these two external pipes 600 is fixed, and in reality, there may be some errors in the distance between the two external pipes 600. If the distance between the two external pipes 600 is less than the axial length of the beverage production pipeline observation structure, then the two external pipes 600 need to be pushed apart to install the beverage production pipeline observation structure, or the beverage production pipeline observation structure needs to be pushed and squeezed between the two external pipes 600, making installation difficult.

[0041] Reference Figure 1 In some embodiments, the pipe joint 100 can be non-telescopic. In this case, the distance between the two external pipes 600 can be set slightly larger than the axial length of the beverage production pipe observation structure, so that the beverage production pipe observation structure can be installed between the external pipes 600. During the installation process, the flange 610 of the external pipe 600 and the mating ring 111 of the pipe joint 100 can be pulled closer together by the clamping assembly 200, and the tension is borne by the threaded fastener 500 between the two pipe joints 100.

[0042] Reference Figure 3 According to some embodiments of this utility model, the pipe joint 100 is a telescopic joint capable of axial expansion and contraction. Therefore, the pipe joint 100 can be expanded or contracted according to the distance between the two external pipes 600, allowing the beverage production pipe observation structure to be easily installed between the two external pipes 600 and to be easily disassembled later. Thus, the beverage production pipe observation structure provided by this utility model can adapt to different distances between two external pipes 600.

[0043] Reference Figure 3 and Figure 4 According to some embodiments of this utility model, the pipe joint 100 includes an installation cylinder 120, a docking cylinder 110, a pressure cap 130, and an elastic sealing structure 140. One end of the installation cylinder 120 is connected to a transparent observation tube 300. The elastic sealing structure 140 is embedded in the other end of the installation cylinder 120. The docking cylinder 110 is slidably inserted into the elastic sealing structure 140. A docking ring 111 is disposed on the docking cylinder 110. The pressure cap 130 is sleeved on the docking cylinder 110 and can move along the docking cylinder 110. The pressure cap 130 is used to press against the elastic sealing structure 140, so that the elastic sealing structure 140 squeezes the docking cylinder 110, thereby sealing the connection between the docking cylinder 110 and the installation cylinder 120. With the above configuration, the pipe joint 100 can expand and contract while also withstanding greater internal pressure.

[0044] Reference Figure 4In some embodiments, the outer edge of the end of the pressure cap 130 facing the docking ring 111 is provided with a second chamfer 131 or a second rounding. The end of the pressure cap 130 facing the docking ring 111 is used to cooperate with the clamping member 210 to abut against the elastic sealing structure 140. The stroke of the clamping member 210 pushing the pressure cap 130 to move is not greater than the thickness of the side wall of the clamping groove 211. Therefore, the stroke of the docking cylinder 110 relative to the mounting cylinder 120 is also not greater than the thickness of the side wall of the clamping groove 211. With the above configuration, during the process of the locking device 220 bringing the two clamping members 210 of the clamping assembly 200 together and locking them, the clamping member 210 can push the pressure cap 130 against the elastic sealing structure 140. Thus, no additional operation of the pressure cap 130 is required, making it convenient to use.

[0045] In other embodiments, the gland 130 is screwed to the docking cylinder 110. By rotating the gland 130, the gland 130 can be moved closer to or away from the elastic sealing structure 140. In this case, the range of movement of the gland 130 is independent of the clamping member 210. Therefore, the sliding stroke of the docking cylinder 110 relative to the mounting cylinder 120 is also independent of the clamping member 210. The sliding stroke of the docking cylinder 110 relative to the mounting cylinder 120 can be designed to be larger to accommodate a larger range of spacing between the two external pipes 600.

[0046] Reference Figure 3 and Figure 4 In the specific implementation process, the elastic sealing structure 140 may include two V-shaped sealing rings 141 and an O-shaped sealing ring 142. The O-shaped sealing ring 142 is located between the two V-shaped sealing rings 141. The V-shaped sealing ring 141 has strong elastic deformation ability and can better cooperate with the gland 130 to achieve error compensation.

[0047] Of course, in other embodiments, the resilient sealing structure 140 may also be configured in other ways, for example, one of the V-shaped sealing rings 141 may be replaced with a spring.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pipe observation structure for beverage production, characterized by, The utility model relates to a transparent observation pipe joint structure, including: Two interval pipe joints (100), the transparent observation pipe (300) is butt joint between two pipe joints (100), the pipe joint (100) is provided with butt joint ring (111) to the end away from the transparent observation pipe (300), Two groups of clamping components (200) are used for clamping and fixing corresponding butt joint ring (111) and the flange (610) of external pipeline (600) to make butt joint ring (111) and the flange (610) of external pipeline (600) butt joint, wherein each group of clamping components (200) includes two clamping pieces (210) and locking device (220), one end of two clamping pieces (210) is rotatably connected, the other end of two clamping pieces (210) can relatively rotate to open or close, two clamping pieces (210) are enclosed and form the accommodating hole (210a) for pipe joint (100) and external pipeline (600) to pass through, the surface of two clamping pieces (210) towards accommodating hole (210a) is provided with clamping groove (211), clamping groove (211) is arranged in arc, clamping groove (211) is used for the flange (610) of external pipeline (600) and butt joint ring (111) are inserted, locking device (220) is used for locking the other end of two clamping pieces (210) to close, so that the opposite side wall of clamping groove (211) clamps and fixes the flange (610) of external pipeline (600) and butt joint ring (111).

2. A pipe observation structure for beverage production according to claim 1, characterized in that, It also includes two elastic sealing pads (410), which are used to be arranged between the butt joint ring (111) and the flange (610) of the external pipeline (600).

3. A pipe observation structure for beverage production according to claim 1, characterized in that, The outer edge of the end of the butt joint ring (111) close to the transparent observation pipe (300) is provided with a first chamfer (1111) or a first rounding, which is used to abut with the side wall of the clamping groove (211).

4. The pipeline observation structure for beverage production according to claim 1, characterized in that, The locking device (220) includes a locking bolt (221) and a tightening nut (222), the other end of the two clamping pieces (210) is provided with a locking portion (212), the first locking portion (212) is provided with a relief groove (2121), the second locking portion (212) is rotatably connected with one end of the locking bolt (221), the locking bolt (221) can be rotated in and out of the relief groove (2121), the tightening nut (222) is screwed with the locking bolt (221), when the locking bolt (221) enters the relief groove (2121), the tightening nut (222) abuts with the first locking portion (212), when the tightening nut (222) is rotated and tightened, the two locking portions (212) can be close to each other.

5. The pipeline observation structure for beverage production according to claim 1, characterized in that, The opposite ends of the transparent observation tube (300) are correspondingly inserted into two pipe joints (100), and the two pipe joints (100) are connected and fixed by a threaded fastener (500), and the threaded fastener (500) is provided with at least two and is arranged around the circumference of the transparent observation tube (300).

6. A pipe observation structure for beverage production according to claim 5, characterized in that, A sealing structure is arranged between the transparent observation tube (300) and the pipe joint (100).

7. A pipe observation structure for beverage production according to claim 6, characterized in that, The pipe joint (100) is provided with an annular insertion slot (121), the transparent observation tube (300) is inserted into the annular insertion slot (121), and the sealing structure comprises an elastic sealing ring (420) embedded between the side wall of the annular insertion slot (121) and the transparent observation tube (300).

8. A pipeline viewing structure for beverage production according to any one of claims 1 to 7, characterized in that The pipe joint (100) is a telescopic joint capable of telescoping in the axial direction.

9. A pipe observation structure for beverage production according to claim 8, characterized in that, The pipe joint (100) comprises a mounting cylinder (120), a butt cylinder (110), a gland (130) and an elastic sealing structure (140), one end of the mounting cylinder (120) is connected with the transparent observation tube (300), the elastic sealing structure (140) is embedded at the other end of the mounting cylinder (120), the butt cylinder (110) is slidably inserted into the elastic sealing structure (140), the butt ring (111) is arranged on the butt cylinder (110), and the gland (130) is sleeved on the butt cylinder (110) and can move along the butt cylinder (110), wherein the gland (130) is used for pressing the elastic sealing structure (140), so that the elastic sealing structure (140) extrudes the butt cylinder (110).

10. A pipe observation structure for beverage production according to claim 9, characterized in that, The gland (130) is screwed on the butt cylinder (110); or, An outer edge of one end of the gland (130) towards the butt ring (111) is provided with a second chamfer (131) or a second rounding, and the one end of the gland (130) towards the butt ring (111) is used for cooperating with the clamping piece (210) to abut, so that the gland (130) abuts on the elastic sealing structure (140).

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