A pipeline connection structure

Abstract

The present invention proposes a pipeline connection structure, including a first main pipeline three-way valve, a second main pipeline three-way valve, a water flow pipeline, a circulating dosing pipeline, a first connecting flange, a second connecting flange and a bellows adjustment component, wherein the water flow pipeline is connected to the first main pipeline three-way valve and the second main pipeline three-way valve, and the water flow pipeline includes a main pipe, a sliding pipe, a bellows and a drain pipe. When the present application chemically cleans the bellows, there is no need to remove the bellows from the pipeline. After connecting the water flow pipeline and the circulating dosing pipeline, the bellows is in a compressed state, and the bellows is stretched outward by the bellows adjustment component, thereby causing the compressed bellows to bend, so that the chemical agent needs to consume more time when circulating through the bellows, and increases the contact area between the chemical agent and the side wall of the bellows when circulating through the bellows, thereby increasing the chemical cleaning effect of the chemical agent when circulating through the bellows.

Description

Technical Field

[0001] The present invention relates to the technical field of water tank pipeline connection, and in particular to a pipeline connection structure. Background Art

[0002] The water tank pipe connection of the submarine is a key part of the overall piping system. The water tank is usually used to store ballast water, fresh water and sewage in the submarine, and is transported and managed through the piping system. The water tank of the submarine plays a key role. It is used to adjust the buoyancy and balance of the submarine, and is also used to store domestic water, including drinking water and clean water.

[0003] Generally, an underwater boat has multiple water tanks. During the actual operation, the underwater boat needs to undergo multiple water tank pumping operations and water transfer operations between water tanks. When pumping water from the water tanks, a high-pressure pump is generally used. During the pumping process, due to the high power during operation, the overall vibration amplitude of the water pipe body is large. In order to alleviate the vibration effect of the pipe body, the prior art uses a bellows to transmit water between the two ends of the pipe. Although the bellows has an anti-vibration effect, it has the problem of generating more dirt on the inner wall of the bellows during water transmission. In addition, due to the complex pipe connections in the underwater boat, it is not convenient to use chemicals to clean the dirt on the inner wall of the bellows. Therefore, the present application proposes a pipe connection structure to solve the above problems. Summary of the Invention

[0004] In view of this, the present invention proposes a pipe connection structure. By connecting a first connecting flange and a second connecting flange and adjusting two main pipe three-way valves to connect the water flow pipeline and the circulating dosing pipeline, the water flow pipeline and the circulating dosing pipeline form a closed loop. The bellows are compressed, and a chemical agent is supplied into the interior of the circulating dosing pipeline through the dosing pipeline, thereby completing the cleaning process of the bellows. During cleaning, the bellows are stretched outward by the bellows adjustment assembly, causing the compressed bellows to bend, requiring the chemical agent to consume more time to circulate through the bellows, and increasing the contact area between the chemical agent and the side wall of the bellows when flowing through the bellows, thereby enhancing the chemical cleaning effect of the chemical agent when flowing through the bellows.

[0005] The technical solution of the present invention is achieved as follows: The present invention provides a pipeline connection structure, including a first main pipeline three-way valve, a second main pipeline three-way valve, a water flow pipeline, a circulating dosing pipeline, a first connecting flange, a second connecting flange and a bellows adjustment component, wherein the water flow pipeline is connected to the first main pipeline three-way valve and the second main pipeline three-way valve, and the water flow pipeline includes a main pipe, a sliding pipe, a bellows and a drain pipe, wherein,

[0006] The main pipe is slidably connected to the sliding pipe, and the sliding pipe is connected to the first main pipe three-way valve, the bellows is connected to the first main pipe three-way valve and the second main pipe three-way valve, and the drain pipe is connected to the second main pipe three-way valve;

[0007] A circulating dosing pipeline is connected to the second main pipeline three-way valve, and the second connecting flange is provided at one end of the circulating dosing pipeline away from the second main pipeline three-way valve, and the circulating dosing pipeline is connected to the dosing pipeline;

[0008] a first connecting flange, disposed at an end of the first main pipeline three-way valve, and inclined relative to a sliding path of the sliding pipe, and the second connecting flange having an inclination angle adapted to that of the first connecting flange, so that when the sliding pipe slides toward the second main pipeline three-way valve, the first connecting flange and the second connecting flange interfere with each other, and when the first connecting flange and the second connecting flange are connected, the circulating dosing pipeline is connected to the first main pipeline three-way valve;

[0009] The bellows positioning assembly is arranged at the middle position of the bellows and is used to stretch the bellows to one side.

[0010] On the basis of the above technical solution, preferably, the circulating dosing pipeline includes a first connecting pipe, a basket filter, a second connecting pipe, a circulating water pump and a third connecting pipe, wherein,

[0011] a first connecting pipe connected to the second main pipeline three-way valve, the first connecting pipe being provided with a drain three-way valve, and the drain three-way valve being connected to a drain pipe;

[0012] a basket filter connected to an end of the first connecting pipe;

[0013] a second connecting pipe, connected to the basket filter, and the dosing pipeline is connected to the second connecting pipe;

[0014] a circulating water pump connected to an end of the second connecting pipe;

[0015] The third connecting pipe is connected to the circulating water pump, and the second connecting flange is arranged at the end of the third connecting pipe.

[0016] On the basis of the above technical solution, preferably, the terrain of the first main pipeline three-way valve is higher than that of the second main pipeline three-way valve.

[0017] On the basis of the above technical solution, preferably, the third connecting pipe includes a connecting hose and a connecting fixed pipe that are interconnected, wherein:

[0018] The connecting hose is communicated with the circulating water pump, and the second connecting flange is arranged at the end of the connecting fixed pipe. The connecting fixed pipe is fixedly arranged, and the connecting hose is a polytetrafluoroethylene hose.

[0019] On the basis of the above technical solution, preferably, it further includes a clamping component and a vibration motor, and the bellows positioning assembly includes an assembly frame and a sliding frame, wherein,

[0020] The assembly frame is fixedly arranged, and the sliding frame is slidably arranged on the assembly frame, and the sliding frame is formed with a tube-penetrating cavity for the corrugated tube to pass through;

[0021] A clamping component, provided on the assembly frame, for locating the sliding position of the sliding frame;

[0022] A vibration motor is provided on the assembly frame and is used for vibrating the assembly frame.

[0023] On the basis of the above technical solution, preferably, the assembly frame includes a bottom frame and a side frame, and the sliding frame includes an arch frame and a cross frame, wherein:

[0024] Two side frames are fixedly connected to the base frame, the cross frame passes through the arch frame and is fixedly connected to the arch frame, both ends of the cross frame are slidably connected to the two side frames, and the through-tube cavity is formed between the arch frame and the cross frame;

[0025] The bottom frame is provided with an inserting hole. When the horizontal frame slides along the side frame, the arch frame is inserted into the inserting hole, and the clamping component locates the sliding position of the sliding frame.

[0026] On the basis of the above technical solution, preferably, the clamping component includes a clamping block, a threaded ring, a screw, a sliding rod and a spring, wherein:

[0027] The base frame is provided with a sliding hole connected to the plug hole;

[0028] The card block is a wedge block, and the card block is slidably connected to the sliding hole, and the arch frame is provided with a positioning slot for the card block to be inserted;

[0029] A threaded ring, disposed on the base frame;

[0030] a screw, threadedly connected to the thread ring, and the screw penetrates into the sliding hole;

[0031] A sliding rod is provided on the clamping block and is slidably connected to the screw rod;

[0032] The spring is sleeved on the peripheral side of the sliding rod and is fixedly connected to the clamping block and the threaded ring.

[0033] On the basis of the above technical solution, preferably, it further includes a lock, wherein,

[0034] A lock buckle is provided between the main pipe and the sliding pipe. When the sliding pipe slides to the top, the lock buckle locates the sliding position of the sliding pipe.

[0035] On the basis of the above technical solution, preferably, the dosing pipeline includes a drug storage tank, a dosing three-way valve and a dosing pipe, wherein,

[0036] The medicine storage tank is used to store chemicals;

[0037] The dosing three-way valve is arranged on the second connecting pipe, and the dosing pipe is connected to the dosing three-way valve and the medicine storage tank.

[0038] On the basis of the above technical solution, preferably, the water flow pipeline further includes two level-adjusting pipes, wherein:

[0039] The first main pipeline three-way valve and the second main pipeline three-way valve are both Y-shaped three-way valves, and the dosing three-way valve and the drain three-way valve are both T-shaped three-way valves;

[0040] Two position-adjusting pipes are respectively connected to the two ends of the bellows and are respectively connected to the first main pipeline three-way valve and the second main pipeline three-way valve.

[0041] The pipeline connection structure of the present invention has the following beneficial effects compared with the prior art:

[0042] (1) When the water flow pipeline is connected to the circulating dosing pipeline, since the first connecting flange is inclined relative to the sliding path of the sliding pipe, the sliding position of the sliding pipe can be positioned under the interference of the second connecting flange. At this time, the first connecting flange and the second connecting flange are connected, and the two main pipeline three-way valves are adjusted to connect the water flow pipeline to the circulating dosing pipeline, so that the water flow pipeline and the circulating dosing pipeline form a closed loop, and the bellows is in a compressed state. Chemicals are supplied to the interior of the circulating dosing pipeline through the dosing pipeline, thereby completing the cleaning process of the bellows. During the cleaning process, the bellows are stretched outward by the bellows adjustment component, so that the compressed bellows are bent, so that the chemical takes more time to circulate through the bellows, and the contact area between the chemical and the side wall of the bellows is increased when the chemical circulates through the bellows, thereby increasing the chemical cleaning effect of the chemical when the chemical circulates through the bellows.

[0043] (2) By providing a vibration motor, specifically, when the bellows is stretched outward, the slide frame is adjusted to slide outward along the assembly frame, thereby completing the force bending process of the bellows through the squeezing and resistance of the slide frame. Since the bellows is compressed before bending, the side wall of the bellows can be in resistance with the slide frame after the bellows is bent. At this time, the position of the slide frame is positioned by the clamping component to increase the stability of the position of the slide frame, and then the vibration motor is started. At this time, the vibration motor can drive the assembly frame to vibrate, thereby driving the bellows to vibrate. The vibrating bellows can increase the cleaning effect of dirt in the bellows, thereby increasing the dirt cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 is a three-dimensional diagram of the pipeline connection structure of the present invention;

[0046] Figure 2 It is a front view of the pipeline connection structure of the present invention;

[0047] Figure 3 A three-dimensional schematic diagram of a bellows positioning assembly of a pipe connection structure of the present invention;

[0048] Figure 4 The pipeline connection structure of the present invention Figure 3 A cross-sectional view of the structure shown. DETAILED DESCRIPTION

[0049] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] like Figures 1 to 4As shown, the pipeline connection structure of the present invention includes a first main pipeline three-way valve 11, a second main pipeline three-way valve 12, a water flow pipeline 2, a circulating dosing pipeline 3, a first connecting flange 41, a second connecting flange 42 and a bellows adjustment component 5, the water flow pipeline 2 is connected to the first main pipeline three-way valve 11 and the second main pipeline three-way valve 12, the water flow pipeline 2 includes a main pipe 21, a sliding pipe 22, a bellows 23 and a drain pipe 24, wherein the main pipe 21 is slidably connected to the sliding pipe 22, and the sliding pipe 22 is connected to the first main pipeline three-way valve 11, the bellows 23 is connected to the first main pipeline three-way valve 11 and the second main pipeline three-way valve 12, and the drain pipe 24 is connected to the second main pipeline three-way valve 12; the circulating dosing pipeline 3 is connected to the second main pipeline three-way valve 12, and The second connecting flange 42 is arranged at one end of the circulating dosing pipeline 3 away from the second main pipeline three-way valve 12, and the circulating dosing pipeline 3 is connected to the dosing pipeline 8; the first connecting flange 41 is arranged at the end of the first main pipeline three-way valve 11, and the first connecting flange 41 is inclined relative to the sliding path of the sliding pipe 22, and the second connecting flange 42 is adapted to the inclination angle of the first connecting flange 41. When the sliding pipe 22 slides toward the second main pipeline three-way valve 12, the first connecting flange 41 and the second connecting flange 42 conflict with each other. When the first connecting flange 41 and the second connecting flange 42 are connected, the circulating dosing pipeline 3 is connected to the first main pipeline three-way valve 11; the bellows adjustment assembly 5 is arranged at the middle position of the bellows 23, and is used to stretch the bellows 23 to one side.

[0051] In a specific implementation, both the first connecting flange 41 and the second connecting flange 42 are flat flanges. The first connecting flange 41 is connected to the first main pipeline three-way valve 11 through a pipeline. When the first connecting flange 41 and the second connecting flange 42 are in contact with each other, the first connecting flange 41 and the second connecting flange 42 can be connected.

[0052] In specific implementation, water circulates through the water flow pipeline 2. At this time, water flows into the interior of the water flow pipeline 2 through the main pipe 21 or the drain pipe 24, and circulates after passing through the first main pipeline three-way valve 11, the second main pipeline three-way valve 12 and the bellows 23. When it is necessary to chemically clean the dirt inside the bellows 23, the connection between the main pipe 21 and the drain pipe 24 is disconnected, and the sliding pipe 22 is adjusted to slide in the direction close to the second main pipeline three-way valve 12 until the first connecting flange 41 and the second connecting flange 42 conflict with each other. Since the first connecting flange 41 is inclined relative to the sliding path of the sliding pipe 22, the sliding position of the sliding pipe 22 can be positioned under the conflict of the second connecting flange 42. At this time, the first connecting flange 41 and the second connecting flange 42 are connected, and the two main pipeline three-way valves are adjusted to connect the water flow pipeline 2 with the circulating dosing pipeline 3, so that the water flow pipeline 2 and the circulating dosing pipeline 3 form a circulating closed circuit, and the bellows 23 is in a compressed state, and the chemical agent is supplied to the inside of the circulating dosing pipeline 3 through the dosing pipeline 8, thereby completing the cleaning process of the bellows 23. During cleaning, the bellows 23 is stretched outward by the bellows adjustment assembly 5, causing the compressed bellows 23 to bend, so that the chemical agent needs to consume more time when flowing through the bellows 23, and increases the contact area between the chemical agent and the side wall of the bellows 23 when flowing through the bellows 23, thereby increasing the chemical cleaning effect of the chemical agent when flowing through the bellows 23.

[0053] As a preferred embodiment, the circulating dosing pipeline 3 includes a first connecting pipe 31, a basket filter 32, a second connecting pipe 33, a circulating water pump 34 and a third connecting pipe 35, wherein the first connecting pipe 31 is connected to the second main pipeline three-way valve 12, and a drain three-way valve 91 is provided on the first connecting pipe 31, and a drain pipe 92 is connected to the drain three-way valve 91; the basket filter 32 is connected to the end of the first connecting pipe 31; the second connecting pipe 33 is connected to the basket filter 32, and the dosing pipeline 8 is connected to the second connecting pipe 33; the circulating water pump 34 is connected to the end of the second connecting pipe 33; the third connecting pipe 35 is connected to the circulating water pump 34, and the second connecting flange 42 is provided at the end of the third connecting pipe 35.

[0054] In practice, external chemicals enter the second connecting pipe 33 through the dosing line 8. Pumped by the circulating water pump 34, they are supplied to the first main pipeline three-way valve 11 through the third connecting pipe 35, completing the chemical circulation process. As the chemicals circulate to the basket filter 32, they filter dirt from the liquid, thereby increasing the cleanliness of the liquid when it is recirculated to the bellows 23 and enhancing the chemical cleaning efficiency of the bellows 23.

[0055] As a preferred embodiment, the terrain of the first main pipeline three-way valve 11 is higher than that of the second main pipeline three-way valve 12 .

[0056] With this design, when adjusting the sliding of the sliding tube 22, the sliding tube 22 can slide downward naturally under the action of its own gravity until the first connecting flange 41 and the second connecting flange 42 abut against each other. In this way, when positioning the sliding position of the sliding tube 22, only one positioning structure needs to be set to position the sliding position of the top of the sliding tube 22, which is convenient for use.

[0057] As a preferred embodiment, the third connecting pipe 35 includes a connecting hose 351 and a connecting fixed pipe 352 that are interconnected, wherein the connecting hose 351 is connected to the circulating water pump 34, and the second connecting flange 42 is arranged at the end of the connecting fixed pipe 352, the connecting fixed pipe 352 is fixed, and the connecting hose 351 is a polytetrafluoroethylene hose.

[0058] In this design, since the second connecting flange 42 needs to be aligned with the first connecting flange 41 in the height direction, the position of the connecting fixed pipe 352 is relatively fixed, and the circulating water pump 34 is located at the second main pipeline three-way valve 12, so a connecting hose 351 is provided to facilitate the connection of the connecting fixed pipe 352 with the circulating water pump 34, thereby facilitating the traction processing of the circulating dosing pipeline 3.

[0059] As a preferred embodiment, it also includes a clamping component 6 and a vibration motor 71. The bellows positioning assembly 5 includes an assembly frame 51 and a sliding frame 52, wherein the assembly frame 51 is fixedly arranged, and the sliding frame 52 is slidably arranged on the assembly frame 51, and the sliding frame 52 is formed with a tube-penetrating cavity 521 for the bellows 23 to pass through; the clamping component 6 is arranged on the assembly frame 51 for positioning the sliding position of the sliding frame 52; the vibration motor 71 is arranged on the assembly frame 51 for vibrating the assembly frame 51.

[0060] Specifically, when adjusting the bending of the compressed bellows 23, the adjustment slide frame 52 slides outward along the assembly frame 51, thereby completing the force-bending process of the bellows 23 through the squeezing and resisting action of the slide frame 52. Since the bellows 23 is compressed before bending, the side wall of the bellows 23 can resist the slide frame 52 after the bellows 23 is adjusted to be bent. At this time, the position of the slide frame 52 is positioned by the clamping member 6 to increase the stability of the position of the slide frame 52. Then, the vibration motor 71 is started. At this time, the vibration motor 71 can drive the assembly frame 51 to vibrate, thereby driving the bellows 23 to vibrate. The vibrating bellows 23 can enhance the cleaning effect of dirt inside the bellows 23, thereby improving the dirt cleaning efficiency.

[0061] As a preferred embodiment, the assembly frame 51 includes a base frame 511 and a side frame 512, and the sliding frame 52 includes an arch frame 522 and a cross frame 523, wherein two side frames 512 are fixedly connected to the base frame 511, the cross frame 523 passes through the arch frame 522 and is fixedly connected to the arch frame 522, both ends of the cross frame 523 are slidably connected to the two side frames 512, and a through-tube cavity 521 is formed between the arch frame 522 and the cross frame 523; a plug-in hole 5111 is opened on the base frame 511, when the cross frame 523 slides along the side frame 512, the arch frame 522 is plugged into the inside of the plug-in hole 5111, and the clamping component 6 positions the sliding position of the sliding frame 52.

[0062] The clamping component 6 includes a clamping block 61, a threaded ring 62, a screw 63, a sliding rod 64 and a spring 65, wherein a sliding hole 5112 connected to the plug-in hole 5111 is provided on the base frame 511; the clamping block 61 is a wedge block, and the clamping block 61 is slidingly connected to the sliding hole 5112, and a positioning slot 5221 for the clamping block 61 to be inserted is provided on the arch frame 522; the threaded ring 62 is arranged on the base frame 511; the screw 63 is threadedly connected to the threaded ring 62, and the screw 63 penetrates the sliding hole 5112; the sliding rod 64 is arranged on the clamping block 61 and is slidingly connected to the screw 63; the spring 65 is sleeved on the circumferential side of the sliding rod 64 and is fixedly connected to the clamping block 61 and the threaded ring 62.

[0063] In a specific embodiment, one side of the positioning block 61 is an inclined surface and the other side is a flat surface. When the sliding frame 52 is adjusted to slide, the arch frame 522 can be inserted into the insertion hole 5111. At this time, the arch frame 522 can resist the inclined surface of the block 61, allowing the block 61 to slide naturally along the sliding hole 5112. The spring 65 is compressed, and when the positioning slot 5221 moves to a position relative to the block 61, the block 61 is inserted into the positioning slot 5221 under the elastic force of the spring 65. At this time, the arch frame 522 cannot be withdrawn, thereby completing the positioning process of the sliding position of the arch frame 522. When it is necessary to adjust the sliding frame 52 to slide back to its original position, the screw rod 63 is rotated. At this time, the screw rod 63 pulls the sliding rod 64 outward under the action of the thread ring 62. The sliding rod 64 drives the block 61 to slide outward, so that the block 61 is separated from the arch frame 522, allowing the bellows 23 to be stretched upward and restored to a vertical state.

[0064] As a preferred embodiment, a lock buckle 72 is further included, wherein the lock buckle 72 is provided between the main pipe 21 and the sliding pipe 22 , and when the sliding pipe 22 slides to the top, the lock buckle 72 locates the sliding position of the sliding pipe 22 .

[0065] In a specific implementation, the sliding tube 22 is positioned at the top by the lock 72. When the sliding tube 22 needs to be adjusted to slide downward, the lock 72 is released. At this time, the sliding tube 22 slides downward under the action of its own gravity.

[0066] As a preferred embodiment, the dosing pipeline 8 includes a drug storage tank 81, a dosing three-way valve 82 and a dosing pipe 83, wherein the drug storage tank 81 is used to store chemicals; the dosing three-way valve 82 is arranged on the second connecting pipe 33, and the dosing pipe 83 is connected to the dosing three-way valve 82 and the drug storage tank 81.

[0067] In a specific implementation, the circulating water pump 34 extracts the cleaning chemical from the chemical storage tank 81 through the chemical dosing three-way valve 82 and the chemical dosing pipe 83 .

[0068] As a preferred embodiment, the water flow pipeline 2 also includes two position adjusting pipes 25, wherein the first main pipeline three-way valve 11 and the second main pipeline three-way valve 12 are both Y-shaped three-way valves, and the dosing three-way valve 82 and the drain three-way valve 91 are both T-shaped three-way valves; the two position adjusting pipes 25 are respectively connected to the two ends of the bellows 23, and are respectively connected to the first main pipeline three-way valve 11 and the second main pipeline three-way valve 12.

[0069] In a specific implementation, the position-adjusting pipe 25 is a curved pipe. This design allows the bellows 23 to be in a vertical position under the guidance of the position-adjusting pipe 25. The vertical position of the bellows 23 can reduce contact with the water flow, thereby reducing the efficiency of the water channel production within the bellows 23. By setting the main pipeline three-way valve as a Y-shaped valve, it is convenient to adjust the first connecting flange 41 connected to the first main pipeline three-way valve 11 to be tilted, thereby facilitating the connection of the first connecting flange 41.

[0070] The working principle of the present invention is described below:

[0071] Guided by two positioning tubes 25, the bellows 23 approaches a vertical position, allowing water to circulate through the water flow pipe 2. To chemically clean dirt inside the bellows 23, disconnect the main pipe 21 from the drain pipe 24 and unlock the lock 72. The sliding pipe 22 then slides downward naturally until the first connecting flange 41 and the second connecting flange 42 contact each other. The contact between the second connecting flange 42 further positions the sliding pipe 22. Connect the first connecting flange 41 and the second connecting flange 42, and adjust the two main pipe three-way valves to connect the water flow pipe 2 with the circulating dosing pipe 3, forming a closed loop. Start the circulating water pump 34, which then pumps the chemical from the storage tank 81 into the circulating dosing pipe 3 through the dosing pipe 83. The chemical circulates between the circulating dosing pipe 3 and the bellows 23, completing the chemical cleaning of dirt inside the bellows 23. During cleaning, the slide frame 52 is adjusted to slide outward until it is inserted into the insertion hole 5111. The block 61 is naturally inserted into the positioning slot 5221 under the pressure of the spring 65, thereby completing the sliding positioning of the slide frame 52. At this time, the bellows 23 is in a bent state, and the side wall of the bellows 23 contacts the slide frame 52. The vibration motor 71 is activated to continuously vibrate the bellows 23, thereby increasing the cleaning efficiency of the dirt inside the bellows 23 through vibration. When the liquid flows to the basket filter 32, the basket filter 32 can filter the dirt in the liquid, thereby increasing the cleanliness of the liquid when it is recirculated to the bellows 23, and improving the chemical cleaning efficiency of the bellows 23.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipeline connection structure, characterized in that: The invention comprises a first main pipeline three-way valve (11), a second main pipeline three-way valve (12), a water flow pipeline (2), a circulating dosing pipeline (3), a first connecting flange (41), a second connecting flange (42) and a bellows adjustment assembly (5), wherein the water flow pipeline (2) is connected to the first main pipeline three-way valve (11) and the second main pipeline three-way valve (12), and the water flow pipeline (2) comprises a main pipe (21), a sliding pipe (22), a bellows (23) and a drain pipe (24), wherein: The main pipe (21) is slidably connected to the sliding pipe (22), and the sliding pipe (22) is connected to the first main pipe three-way valve (11), the bellows (23) is connected to the first main pipe three-way valve (11) and the second main pipe three-way valve (12), and the drain pipe (24) is connected to the second main pipe three-way valve (12); The circulating dosing pipeline (3) is connected to the second main pipeline three-way valve (12), and the second connecting flange (42) is arranged at one end of the circulating dosing pipeline (3) away from the second main pipeline three-way valve (12), and the circulating dosing pipeline (3) is connected to the dosing pipeline (8); A first connecting flange (41) is provided at an end of the first main pipeline three-way valve (11), and the first connecting flange (41) is inclined relative to the sliding path of the sliding pipe (22), and the second connecting flange (42) is adapted to the inclination angle of the first connecting flange (41). When the sliding pipe (22) slides toward the second main pipeline three-way valve (12), the first connecting flange (41) and the second connecting flange (42) conflict with each other. When the first connecting flange (41) and the second connecting flange (42) are connected, the circulating dosing pipeline (3) is communicated with the first main pipeline three-way valve (11); The bellows positioning assembly (5) is arranged at the middle position of the bellows (23) and is used to stretch the bellows (23) to one side.

2. The pipe connection structure according to claim 1, wherein: The circulating dosing pipeline (3) includes a first connecting pipe (31), a basket filter (32), a second connecting pipe (33), a circulating water pump (34) and a third connecting pipe (35), wherein: A first connecting pipe (31) is connected to the second main pipeline three-way valve (12); a drain three-way valve (91) is provided on the first connecting pipe (31), and a drain pipe (92) is connected to the drain three-way valve (91); a basket filter (32) connected to the end of the first connecting pipe (31); A second connecting pipe (33) is in communication with the basket filter (32), and the dosing line (8) is in communication with the second connecting pipe (33); a circulating water pump (34) connected to the end of the second connecting pipe (33); The third connecting pipe (35) is in communication with the circulating water pump (34), and the second connecting flange (42) is provided at an end of the third connecting pipe (35).

3. The pipeline connection structure according to claim 1, characterized in that: The terrain of the first main pipeline three-way valve (11) is higher than the terrain of the second main pipeline three-way valve (12).

4. The pipeline connection structure according to claim 2, characterized in that: The third connecting pipe (35) comprises a connecting hose (351) and a connecting fixing pipe (352) that are interconnected, wherein: The connecting hose (351) is in communication with the circulating water pump (34), and the second connecting flange (42) is arranged at the end of the connecting fixed pipe (352). The connecting fixed pipe (352) is fixedly arranged, and the connecting hose (351) is a polytetrafluoroethylene hose.

5. The pipeline connection structure according to claim 1, characterized in that: It also includes a clamping component (6) and a vibration motor (71), and the bellows positioning assembly (5) includes an assembly frame (51) and a sliding frame (52), wherein: The assembly frame (51) is fixedly arranged, and the sliding frame (52) is slidably arranged on the assembly frame (51), and the sliding frame (52) is formed with a tube-penetrating cavity (521) for the corrugated tube (23) to pass through. A clamping component (6) is provided on the assembly frame (51) and is used to locate the sliding position of the sliding frame (52); A vibration motor (71) is provided on the assembly frame (51) and is used to vibrate the assembly frame (51).

6. The pipeline connection structure according to claim 5, characterized in that: The assembly frame (51) includes a bottom frame (511) and a side frame (512), and the sliding frame (52) includes an arch frame (522) and a cross frame (523), wherein: Two side frames (512) are fixedly connected to the bottom frame (511); the cross frame (523) passes through the arch frame (522) and is fixedly connected to the arch frame (522); both ends of the cross frame (523) are slidably connected to the two side frames (512); and the through-tube cavity (521) is formed between the arch frame (522) and the cross frame (523); The bottom frame (511) is provided with a plug hole (5111). When the horizontal frame (523) slides along the side frame (512), the arch frame (522) is plugged into the inside of the plug hole (5111), and the clamping component (6) locates the sliding position of the sliding frame (52).

7. The pipeline connection structure according to claim 6, characterized in that: The clamping component (6) includes a clamping block (61), a threaded ring (62), a screw rod (63), a sliding rod (64) and a spring (65), wherein: The base frame (511) is provided with a sliding hole (5112) connected to the plug hole (5111); The clamping block (61) is a wedge block, and the clamping block (61) is slidably connected to the sliding hole (5112), and a positioning slot (5221) for inserting the clamping block (61) is provided on the arch frame (522); A threaded ring (62) is provided on the base frame (511); A screw rod (63) is threadedly connected to the thread ring (62), and the screw rod (63) penetrates the sliding hole (5112); A sliding rod (64) is provided on the clamping block (61) and is slidably connected to the screw rod (63); The spring (65) is sleeved on the circumference of the sliding rod (64) and is fixedly connected to the clamping block (61) and the threaded ring (62).

8. The pipeline connection structure according to claim 1, characterized in that: Also included is a lock (72), wherein A lock buckle (72) is provided between the main pipe (21) and the sliding pipe (22). When the sliding pipe (22) slides to the top, the lock buckle (72) locates the sliding position of the sliding pipe (22).

9. The pipeline connection structure according to claim 2, characterized in that: The dosing pipeline (8) includes a drug storage tank (81), a dosing three-way valve (82) and a dosing pipe (83), wherein: The medicine storage tank (81) is used to store chemicals; The dosing three-way valve (82) is provided on the second connecting pipe (33), and the dosing pipe (83) is connected to the dosing three-way valve (82) and the medicine storage tank (81).

10. The pipeline connection structure according to claim 9, characterized in that: The water flow pipeline (2) further includes two position adjustment tubes (25), wherein: The first main pipeline three-way valve (11) and the second main pipeline three-way valve (12) are both Y-shaped three-way valves, and the dosing three-way valve (82) and the drain three-way valve (91) are both T-shaped three-way valves; Two position-adjusting pipes (25) are respectively connected to the two ends of the bellows (23), and are respectively connected to the first main pipeline three-way valve (11) and the second main pipeline three-way valve (12).

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