Water system filter capable of being replaced online and replacement method

Abstract

The invention relates to a water system filter capable of being replaced online and a replacement method, and belongs to the technical field of water filtration. The filter comprises a pipe body, the pipe body and a main pipeline are arranged in an orthogonal or inclined mode, a first channel for water to flow through is formed in the pipe body, and a moving assembly, an inner cylinder and a filter cylinder are arranged in the pipe body; the inner cylinder is arranged between the moving assembly and the filter cylinder, the moving assembly is arranged at the end, away from the first channel, of the pipe body, the filter cylinder is movably arranged at the first channel, a sealing cover is movably arranged at the end, close to the first channel, of the pipe body, and the end, away from the inner cylinder, of the filter cylinder is connected with the sealing cover. The filter cartridge can be replaced under the condition that normal operation of the water system is not affected, and online replacement of the filter of the water system is achieved. Compared with the prior art, a bypass pipeline and a valve do not need to be arranged in the design, the material cost of the part can be reduced, the layout of the whole pipeline can be more compact, and space is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of water filtration and relates to a water system filter capable of being replaced online and a replacement method. Background Art

[0002] The ends of water systems such as HVAC water systems, data center liquid cooling systems, and petrochemical pipeline transportation systems are generally connected to precision equipment. If the impurities in the water system are not filtered, there will be a risk of damaging precision instruments / components / equipment. In order to better filter the impurities, it is necessary to install filters in the water system and replace the filters regularly. The commonly used filter at present is the Y-type filter. The commonly used design is to replace the filter element (or filter cartridge) of the Y-type filter online through a shut-off valve and a bypass pipeline. Figure 1 , Figure 2 As shown, under normal operating conditions, the stop valve 3 corresponding to the bypass pipeline is closed, and the stop valve 1 and stop valve 2 corresponding to the main pipeline are opened; when the filter element (or filter cartridge) needs to be replaced, the stop valve 3 needs to be opened first, and then the stop valve 1 and stop valve 2 are closed, and then the filter element (or filter cartridge) is replaced. After the replacement is completed, the stop valve 1 and stop valve 2 are opened again, and finally the stop valve 3 is closed. The current design has the following defects:

[0003] 1. Since the size of the bypass line is often required to be consistent with the main line where the Y-type filter is located, when the size of the main line increases, the corresponding bypass line size also needs to increase, which results in the entire filter module (main line and bypass line) occupying a very large volume. Taking the cabinet-type liquid-cooled CDU as an example, due to its very limited internal space size, the above design has a great impact on the layout of other components.

[0004] 2. Due to gravity factors, impurities in the filter cartridge will settle to the connection between the filter cartridge and the main pipe before replacement, which is equivalent to the filter failing to a certain extent. After replacing the new filter cartridge, this part of the impurities will quickly occupy part of the area of ​​the new filter cartridge. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide a water system filter that can be replaced online, and the second object of the present invention is to provide a method for replacing a water system filter that can be replaced online.

[0006] One of the purposes of the present invention is achieved by the following technical solution:

[0007] A water system filter that can be replaced online comprises a tube body, the tube body is arranged orthogonally or obliquely to the main pipeline, a first channel for water to flow through is opened on the tube body, a moving component, an inner cylinder and a filter cartridge are arranged in the tube body, the inner cylinder is placed between the moving component and the filter cartridge, the moving component is arranged at one end of the tube body away from the first channel, the filter cartridge is movably arranged at the first channel, a sealing cover is movably arranged at one end of the tube body close to the first channel, and the end of the filter cartridge away from the inner cylinder is connected to the sealing cover.

[0008] As a preferred technical solution of the present invention, the moving assembly includes a spring, a telescopic rod and a first sealing plate, the spring is sleeved on the outside of the telescopic rod, the two ends of the spring and the two ends of the telescopic rod are respectively fixed to the end of the tube body and the first sealing plate, the first sealing plate is in movably contact with the inner wall of the tube body, and one end of the inner tube is connected to the first sealing plate.

[0009] As a preferred technical solution of the present invention, the moving component includes a spring, a guide rod and a first sealing plate, the spring is sleeved on the outside of the guide rod, the two ends of the spring are respectively fixed on the end of the tube body and the first sealing plate, the first sealing plate is in movable contact with the inner wall of the tube body, the first sealing plate and the two ends of the inner tube are respectively provided with through holes, one end of the guide rod is fixed to the end of the tube body, and the other end moves through the through hole in sequence.

[0010] As a preferred technical solution of the present invention, the end surface of the first sealing plate away from the spring protrudes outward to form a protrusion, the protrusion is provided with an external thread, one end of the inner tube is provided with an internal thread, and the inner tube is threadedly connected to the protrusion.

[0011] As a preferred technical solution of the present invention, a second sealing plate is provided at one end of the inner cylinder connected to the filter cylinder, and the second sealing plate is in active contact with the inner wall of the tube body.

[0012] As a preferred technical solution of the present invention, the lengths of the filter cylinder and the inner cylinder are respectively greater than the diameter of the main pipeline.

[0013] As a preferred technical solution of the present invention, a second channel is opened on the inner tube, and the opening direction of the second channel is the same as the opening direction of the first channel.

[0014] As a preferred technical solution of the present invention, it also includes an end cover, which is sealed and fixed to one end of the tube body away from the filter cartridge, and the moving component is fixed on the end cover.

[0015] The second object of the present invention is achieved by adopting the following technical solution:

[0016] A method for replacing a water system filter online comprises the following steps:

[0017] S1: Pull the sealing cover by external force or apply a thrust to the inner cylinder in the direction of the filter cylinder to move the filter cylinder out of the tube body until the second channel of the inner cylinder overlaps with the first channel of the tube body;

[0018] S2: Replace the filter cartridge with a new one;

[0019] S3: Apply a pushing force to the sealing cover in the direction of the inner cylinder or a pulling force to the inner cylinder away from the filter cylinder to restore the filter to its initial state.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention can replace the filter cartridge without affecting the normal operation of the water system, thereby realizing online replacement of the water system filter. When replacing the filter cartridge, the filter cartridge can be moved out of the tube body by only pulling the sealing cover with external force or applying a thrust to the inner tube in the direction of the filter cartridge, and then the filter cartridge is replaced when the second channel of the inner tube coincides with the first channel of the tube body; after the replacement is completed, a thrust is applied to the sealing cover in the direction of the inner tube or a pulling force is applied to the inner tube in the direction away from the filter cartridge to restore the filter to its initial state. Compared with the prior art, the present design does not require the setting of bypass pipelines and valves, which can not only reduce the material cost of this part, but also make the layout of the entire pipeline more compact and save space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the installation structure of the filter in the prior art Figure 1 ;

[0023] Figure 2 It is the installation principle diagram of the filter in the prior art;

[0024] Figure 3 It is a three-dimensional schematic diagram of the installation structure of the present invention in a normal use state;

[0025] Figure 4 The installation structure of the present invention is cutaway in normal use. Figure 1 ;

[0026] Figure 5 The installation structure of the present invention is cutaway in normal use. Figure 2 ;

[0027] Figure 6 It is a schematic diagram of the structure of the present invention when replacing the filter cartridge;

[0028] In the figure: 1. pipe body; 11. sealing cover; 12. end cover; 2. moving assembly; 21. spring; 22. telescopic rod; 23. first sealing plate; 24. guide rod; 3. inner tube; 4. filter tube; 5. main line; 51. stop valve 1; 52. stop valve 2; 6. bypass line; 61. stop valve 3; 7. Y-type filter. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Embodiment 1: A water system filter that can be replaced online, comprising a pipe body 1, the pipe body 1 and the main pipe 5 are arranged orthogonally or obliquely, and the pipe body 1 is arranged at an angle to the main pipe 5. Figure 3-Figure 6 The orthogonal setting is used as an example for explanation. A first channel for water to flow through is opened on the tube body 1, and a moving component 2, an inner tube 3 and a filter tube 4 are arranged in the tube body 1. The lengths of the filter tube 4 and the inner tube 3 are respectively greater than the diameter of the main pipeline 5; a second channel is opened on the inner tube 3, and the opening direction of the second channel is the same as the opening direction of the first channel. The inner tube 3 is placed between the moving component 2 and the filter tube 4, and a second sealing plate is also arranged at one end of the inner tube 3 connected to the filter tube 4, and the second sealing plate is in movable contact with the inner wall of the tube body 1. The moving component 2 is arranged at one end of the tube body 1 away from the first channel, and the filter tube 4 is movably arranged at the first channel. A sealing cover 11 is movably arranged at one end of the tube body 1 close to the first channel, and the end of the filter tube 4 away from the inner tube 3 is connected to the sealing cover 11. In order to prevent water from flowing into the inner tube 3 during normal operation, a flexible pressure-resistant water-retaining material such as PTFE or other flexible materials can be arranged at the edge of the second sealing plate.

[0033] The present invention can replace the filter cartridge 4 without affecting the normal operation of the water system, thereby realizing online replacement of the filter of the water system. When replacing the filter cartridge 4, it is only necessary to pull the sealing cover 11 by external force or apply a thrust to the inner cylinder 3 in the direction of the filter cartridge 4, so that the filter cartridge 4 can be moved out of the tube body 1 until the second channel of the inner cylinder 3 coincides with the first channel of the tube body 1, and then the filter cartridge 4 is replaced; after the replacement is completed, a thrust is applied to the sealing cover 11 in the direction of the inner cylinder 3 or a pulling force is applied to the inner cylinder 3 in the direction away from the filter cartridge 4 to restore the filter to its initial state. During this process, water can still flow normally, although a small amount of water will flow out, but this is a normal phenomenon of online filter replacement. In order to reduce the amount of water flowing out, a retractable pressure-resistant water-retaining material can be provided at the connection between the filter cartridge 4 and the inner wall of the tube body 1.

[0034] Compared with the prior art, the present design does not require the provision of a bypass pipeline 6 and valves, which not only reduces the material cost of this part, but also makes the layout of the entire pipeline more compact and saves space.

[0035] like Figure 4 As shown, the moving assembly 2 includes a spring 21, a guide rod 24 and a first sealing plate 23. The spring 21 is sleeved on the outside of the guide rod 24. The two ends of the spring 21 are respectively fixed on the end of the tube body 1 and the first sealing plate 23. The first sealing plate 23 is in active contact with the inner wall of the tube body 1. The first sealing plate 23 and the two ends of the inner tube 3 are respectively provided with through holes. One end of the guide rod 24 is fixed to the end of the tube body 1, and the other end is sequentially movable through the through holes. When replacing the filter cartridge 4, this solution requires an external tooling to provide pulling and pushing forces to the sealing cover 11.

[0036] like Figure 6 As shown, the moving assembly 2 includes a spring 21, a telescopic rod 22 and a first sealing plate 23. The spring 21 is sleeved on the outside of the telescopic rod 22. Both ends of the spring 21 and the telescopic rod 22 are respectively fixed on the end of the tube body 1 and the first sealing plate 23. The first sealing plate 23 is in active contact with the inner wall of the tube body 1, and one end of the inner cylinder 3 is connected to the first sealing plate 23. When replacing the filter cylinder 4, the present solution requires an external tooling to provide pulling force and pushing force to the sealing cover 11.

[0037] In addition to the above two structures, the moving component 2 can also adopt an electric drive structure to drive the inner tube 3 to move by electric drive, thereby pushing the filter tube 4 out or pulling it into the tube body 1.

[0038] like Figure 2As shown, the end surface of the first sealing plate 23 away from the spring 21 protrudes outward to form a protrusion, and an external thread is provided on the protrusion. One end of the inner tube 3 is provided with an internal thread, and the inner tube 3 is threadedly connected to the protrusion. In addition to the threaded connection method, welding or integral molding can also be used. In order to prevent water from flowing into the moving component 2 when replacing the filter cartridge 4, a retractable pressure-resistant water-retaining material can be provided on the edge of the first sealing plate 23.

[0039] like Figure 4 As shown, it also includes an end cap 12, which is sealed and fixed to the end of the tube body 1 away from the filter cartridge 4, and the moving assembly 2 is fixed to the end cap 12. An external thread can be set on the end cap 12, and the thread is sealed by a sealing rubber ring or a raw tape.

[0040] Embodiment 2: A method for replacing a water system filter online, comprising the following steps:

[0041] S1: Pull the sealing cover 11 by external force or apply a thrust to the inner cylinder 3 in the direction of the filter cylinder 4 to move the filter cylinder 4 out of the tube body 1 until the second channel of the inner cylinder 3 overlaps with the first channel of the tube body 1;

[0042] S2: Replace the new filter cartridge 4;

[0043] S3: Apply a thrust to the sealing cover 11 in the direction of the inner cylinder 3 or apply a pulling force to the inner cylinder 3 in the direction away from the filter cylinder 4 to restore the filter to the initial state.

[0044] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A water system filter capable of being replaced online, comprising a tube body, characterized in that: The tube body is arranged orthogonally or obliquely to the main pipeline, a first channel for water to flow through is opened on the tube body, a moving component, an inner cylinder and a filter cylinder are arranged in the tube body, the inner cylinder is placed between the moving component and the filter cylinder, the moving component is arranged at one end of the tube body away from the first channel, the filter cylinder is movably arranged at the first channel, a sealing cover is movably arranged at one end of the tube body close to the first channel, and the end of the filter cylinder away from the inner cylinder is connected to the sealing cover.

2. A water system filter capable of online replacement as claimed in claim 1, characterized in that: The moving assembly includes a spring, a telescopic rod and a first sealing plate. The spring is sleeved on the outside of the telescopic rod. Both ends of the spring and the telescopic rod are respectively fixed to the end of the tube body and the first sealing plate. The first sealing plate is in active contact with the inner wall of the tube body, and one end of the inner tube is connected to the first sealing plate.

3. A water system filter capable of online replacement as claimed in claim 1, characterized in that: The moving assembly includes a spring, a guide rod and a first sealing plate. The spring is sleeved on the outside of the guide rod. The two ends of the spring are respectively fixed to the end of the tube body and the first sealing plate. The first sealing plate is in movable contact with the inner wall of the tube body. The first sealing plate and the two ends of the inner tube are respectively provided with through holes. One end of the guide rod is fixed to the end of the tube body, and the other end moves through the through hole in sequence.

4. A water system filter capable of being replaced online as claimed in claim 2 or 3, characterized in that: The end surface of the first sealing plate away from the spring protrudes outward to form a protrusion, the protrusion is provided with an external thread, one end of the inner tube is provided with an internal thread, and the inner tube is threadedly connected to the protrusion.

5. The water system filter capable of online replacement according to claim 1, characterized in that: A second sealing plate is disposed at one end of the inner cylinder connected to the filter cylinder, and the second sealing plate is in active contact with the inner wall of the tube body.

6. The water system filter capable of online replacement according to claim 1, characterized in that: The lengths of the filter cartridge and the inner cartridge are respectively greater than the diameter of the main pipeline.

7. The water system filter capable of being replaced online as claimed in claim 1, characterized in that: The inner cylinder is provided with a second channel, and the opening direction of the second channel is the same as the opening direction of the first channel.

8. The water system filter capable of online replacement according to claim 1, characterized in that: It also includes an end cover, which is sealed and fixed to one end of the tube body away from the filter cartridge, and the moving assembly is fixed on the end cover.

9. A method for replacing a water system filter online, characterized in that: The following steps are involved: S1: Pull the sealing cover by external force or apply a thrust to the inner cylinder in the direction of the filter cylinder to move the filter cylinder out of the tube body until the second channel of the inner cylinder overlaps with the first channel of the tube body; S2: Replace the filter cartridge with a new one; S3: Apply a pushing force to the sealing cover in the direction of the inner cylinder or a pulling force to the inner cylinder away from the filter cylinder to restore the filter to its initial state.

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