A duplex filter

Abstract

The utility model relates to duplex filter, including cylinder, sets up two, filter cartridge sets up in the cylinder, valve sleeve is connected two cylinder simultaneously, first three -way hole a and second three -way hole a are set up on the valve sleeve, first three -way hole a is connected two cylinder and water inlet simultaneously, second three -way hole a is connected two cylinder and water outlet simultaneously, valve core sets up in the valve sleeve, wherein, first three -way hole b is set up on the valve core and is aligned first three -way hole a, second three -way hole b is set up on the valve core and is aligned second three -way hole b, the valve core is set up with the valve sleeve adhesion, the utility model discloses through two filter cartridges parallel connection lets the flow area of the medium of being filtered double, when needing to clean up maintenance filter core, also can suspend one filter cartridge and carry out non -stop maintenance. And two filter cartridges pass through a valve core control, adjust convenient further simplify the structure of duplex filter.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a dual-stage filter. Background Technology

[0002] During navigation, ships provide cooling circulating water to auxiliary equipment that requires cooling. To prevent organisms and impurities in the seawater from clogging the circulation system, a filtration system is connected to the circulation system to filter out organisms and impurities from the seawater.

[0003] After prolonged use, filtration systems require cleaning. During this time, equipment that needs cooling may overheat if not properly cooled, potentially posing a safety hazard. A common solution is to install two filtration systems. While one system is being cleaned, the other continues operating normally to provide uninterrupted cooling to the equipment. However, two filtration systems are structurally complex and occupy significant space on the ship.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a dual-stage filter that simplifies the structure and reduces space occupation.

[0006] The technical solution of this utility model is as follows:

[0007] The dual filter includes:

[0008] Two cylinders are provided;

[0009] A filter cartridge is disposed inside the cylinder.

[0010] A valve sleeve connects two of the cylinders simultaneously; a first three-way hole a and a second three-way hole a are provided on the valve sleeve; the first three-way hole a connects both of the cylinders and the water inlet simultaneously; the second three-way hole a connects both of the cylinders and the water outlet simultaneously.

[0011] The valve core is located inside the valve sleeve;

[0012] The valve core has a first three-way hole b aligned with the first three-way hole a, and a second three-way hole b aligned with the second three-way hole b; the valve core is fitted to the valve sleeve.

[0013] A further technical solution is that the upper side of the cylinder is provided with an opening; a cover plate is provided for the upper side of the cylinder opening; a sealing gasket is provided between the cover plate and the cylinder; and an exhaust valve is provided on the cover plate.

[0014] A further technical solution is that the outer diameter of the valve core gradually decreases towards the end that extends into the valve sleeve.

[0015] A further technical solution is that the valve core extends into the end of the valve sleeve, and a gap is left between the valve core and the end of the valve sleeve.

[0016] A further technical solution is that the valve sleeve is open at both ends; a base plate is provided at one end of the valve sleeve, and a first pressure plate and a second pressure plate are provided at the other end of the valve sleeve; an O-ring is provided between the base plate and the valve sleeve; the first pressure plate and the second pressure plate are sleeved on the valve sleeve.

[0017] A further technical solution is that a pressure ring is sleeved on the valve core between the first pressure plate and the second pressure plate.

[0018] A further technical solution is that an annular groove is formed on the valve core around its axis; the annular groove is located on the side close to the first pressure plate; and an O-ring is provided inside the annular groove.

[0019] A further technical solution is that a bushing is also provided inside the valve sleeve; the bushing is sleeved on the valve core.

[0020] A further technical solution is to open a hole on the lower side of the cylinder and install a stopcock.

[0021] A further technical solution is to provide a handle on the valve core.

[0022] The beneficial technical effects of this utility model are as follows:

[0023] (1) The dual filter of this utility model is provided with two filter cartridges, which are connected to the inlet and outlet through a valve sleeve to form two filter cartridges in parallel. The parallel connection of the two filter cartridges doubles the flow area of ​​the filtered medium, thereby improving the filtration capacity. When the filter cartridges need to be cleaned and maintained, one of the filter cartridges can be stopped for cleaning and maintenance, while the other filter cartridge can still work normally, so as to carry out maintenance without stopping the machine, ensuring that the equipment on the ship can be continuously cooled and avoiding the high temperature of the equipment from affecting the ship's navigation. Moreover, the two filter cartridges are controlled by a valve core, which has two sets of three-way holes. By rotating the valve core, the working filter cartridge can be quickly adjusted, which is convenient for adjustment and further simplifies the structure of the dual filter.

[0024] (2) Furthermore, a cover plate is provided on the upper opening of the cylinder to facilitate opening the cylinder for cleaning and maintenance. An exhaust valve is provided on the cover plate to balance the air pressure inside the cylinder. A sealing gasket is provided between the cover plate and the cylinder to ensure sealing performance.

[0025] (3) Further, towards the end that extends into the valve sleeve, the outer diameter of the valve core gradually decreases. This facilitates the insertion of the valve core into the valve sleeve. Moreover, a gap is left at the bottom of the valve core and the valve sleeve, allowing for a deeper connection between the valve core and the valve sleeve after wear, ensuring a tight and secure fit between them. Attached Figure Description

[0026] Figure 1 A partial cross-sectional view of a dual filter according to an embodiment of the present disclosure is shown in the front view direction.

[0027] Figure 2 A top view of a dual filter according to an embodiment of the present disclosure is shown.

[0028] Figure 3 A schematic diagram of the valve core and valve sleeve mating structure in a dual-stage filter according to an embodiment of the present disclosure is shown.

[0029] Figure 4 A cross-sectional view of the valve core at point A in a dual-stage filter according to an embodiment of the present disclosure is shown.

[0030] Marked in the attached diagram:

[0031] 1. Cylinder body; 11. Plug; 2. Filter cartridge; 3. Cover plate; 31. Sealing gasket; 32. Vent valve; 4. Valve core; 41. First tee hole b; 42. Second tee hole b; 43. Annular groove; 44. Handle; 5. Handle; 6. Valve sleeve; 61. Pressure ring; 62. First pressure plate; 63. Second pressure plate; 64. Bushing; 641. O-ring; 65. Base plate; 66. First tee hole a; 67. Second tee hole a; 7. Inlet; 8. Outlet. Detailed Implementation

[0032] To make the objectives, features, and advantages of this utility model more apparent and understandable, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0033] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation 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.

[0034] Figure 1 A partial cross-sectional view of a dual filter according to an embodiment of the present disclosure is shown in the front view direction. Figure 2 A top view of a dual filter according to an embodiment of the present disclosure is shown. Figure 3 A schematic diagram of the valve core and valve sleeve mating structure in a dual-stage filter according to an embodiment of the present disclosure is shown. Figure 4 A cross-sectional view of the valve core at point A in a dual-stage filter according to an embodiment of this disclosure is shown. Please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 The dual-stage filter includes two cylinders 1. Filter cartridges 2 are housed within the cylinders 1. A valve sleeve 6 connects both cylinders 1. The valve sleeve 6 has a first three-way hole a66 and a second three-way hole a67. The first three-way hole a66 connects both cylinders 1 to the inlet 7. The second three-way hole a67 connects both cylinders 1 to the outlet 8. The two filter cartridges 2 are connected to the inlet 7 and outlet 8 via the valve sleeve 6, thus operating in parallel. The parallel connection of the two filter cartridges 2 doubles the flow area of ​​the filtered medium, increasing filtration capacity. When cleaning or maintenance of the filter elements is required, one filter cartridge 2 can be temporarily suspended for cleaning or maintenance while the other filter cartridge 2 continues to operate normally, allowing for non-stop maintenance and ensuring continuous cooling of the equipment on the ship, preventing high temperatures from affecting the ship's navigation. A valve core 4 is housed within the valve sleeve 6. The valve core 4 has a first three-way hole b41 aligned with the first three-way hole a66, and a second three-way hole b42 aligned with the second three-way hole b42. The valve core 4 is fitted into the valve sleeve 6. The two filter cartridges 2 are controlled by a single valve core 4, which has two sets of three-way holes. Rotating the valve core 4 allows for quick adjustment of the working filter cartridges 2, simplifying the structure of the dual-filter system. Components such as the cartridge body 1, filter cartridges 2, valve sleeve 6, and valve core 4 can be made of titanium alloy, which forms a dense oxide film in seawater. It has extremely strong corrosion resistance, ensuring the service life of the entire dual filter.

[0035] Please refer to Figure 1 and Figure 3As the valve core 4 extends into the valve sleeve 6, its outer diameter gradually decreases, making it easier to insert the valve core 4 into the valve sleeve 6.

[0036] Preferably, the valve core 4 extends into the end of the valve sleeve 6, leaving a gap between them. After the valve core 4 and the valve sleeve 6 wear down, the valve core 4 and the valve sleeve 6 can be connected more deeply, ensuring a tight fit between them.

[0037] More preferably, a bushing 64 is also provided inside the valve sleeve 6. The bushing 64 can be made of polytetrafluoroethylene (PTFE), which is resistant to seawater corrosion and has low friction. The bushing 64 is fitted onto the valve core 4 to prevent the valve core 4 from directly contacting the valve sleeve 6 and being worn, thus extending the service life of the valve core 4. At the same time, the bushing 64 is located between the valve core 4 and the valve sleeve 6, improving the sealing performance between the valve core 4 and the valve sleeve 6.

[0038] Please refer to Figure 1 and Figure 3 An opening is provided on the upper side of the cylinder body 1. A cover plate 3 is provided at the opening on the upper side of the cylinder body 1 to facilitate opening the cylinder body 1 for cleaning and maintenance. A sealing gasket 31 is provided between the cover plate 3 and the cylinder body 1 to ensure sealing performance. An exhaust valve 32 is provided on the cover plate 3 to balance the air pressure inside the cylinder body 1.

[0039] Preferably, a hole is opened on the lower side of the cylinder 1 and a stopcock 11 is provided. Specifically, a threaded hole (not shown in the figure) is opened through the lower side of the cylinder 1 to thread the stopcock 11. By removing the stopcock 11, the threaded hole can be opened to quickly drain the liquid and accumulated medium inside the cylinder 1, which facilitates the maintenance of the cylinder 1.

[0040] More preferably, a handle 5 is provided on the valve core 4. The handle 5 can be set perpendicular to the valve core 4. By moving the handle 5, the valve core 4 can be easily rotated to control the flow direction of the medium in the valve sleeve 6, thereby adjusting the working state of each filter cartridge 2.

[0041] Please refer to Figure 1 and Figure 3 The valve sleeve 6 has openings at both ends. A base plate 65 is mounted on one end of the valve sleeve 6, and a first pressure plate 62 and a second pressure plate 63 are mounted on the other end. The base plate 65, the first pressure plate 62, and the second pressure plate 63 can be bolted (not shown in the figure) to connect the valve sleeve 6. The first pressure plate 62 and the second pressure plate 63 can be removed to disassemble and install the valve core 4 inside the valve sleeve 6. Removing the base plate 65 allows for quick cleaning of the valve sleeve 6 and the valve core 4. An O-ring 641 is provided between the base plate 65 and the valve sleeve 6 to ensure a tight seal. The first pressure plate 62 and the second pressure plate 63 are fitted onto the valve sleeve 6 to facilitate the insertion of the valve core 4 into the valve sleeve 6.

[0042] Preferably, a pressure ring 61 is also fitted onto the valve core 4 between the first pressure plate 62 and the second pressure plate 63. Specifically, the valve core 4 includes a handle 44 with a reduced outer diameter. The first pressure plate 62, pressure ring 61, and second pressure plate 63 are fitted onto the handle 44 to restrict the axial position of the valve core 4. The first pressure plate 62, pressure ring 61, and second pressure plate 63 are stacked. A bolt passes through the first pressure plate 62, pressure ring 61, and second pressure plate 63 and is then threaded onto the valve sleeve 6 to fix the first pressure plate 62, pressure ring 61, and second pressure plate 63 onto the valve sleeve 6, thereby fixing the valve core 4 inside the valve sleeve 6.

[0043] More preferably, an annular groove 43 is formed on the valve core 4 around its axis. The annular groove 43 is located on the side near the first pressure plate 62. An O-ring 641 is provided in the annular groove 43. The O-ring 641 enhances the sealing performance between the valve core 4 and the valve sleeve 6, reducing media leakage from the opening of the valve sleeve 6 on the side near the first pressure plate 62.

[0044] The specific workflow of this utility model is as follows:

[0045] Taking the left-side filter cartridge 2 as the main working filter cartridge 2 as an example, during normal operation, the first three-way hole b41 connects only the left-side cylinder 1 and the inlet 7, and the second three-way hole b42 connects only the left-side cylinder 1 and the outlet 8. At this time, the left-side filter cartridge 2 operates normally for filtration, while the right-side filter cartridge 2 is stopped. When cleaning or maintenance of the left-side filter cartridge 2 is required, rotate the valve core 4 to connect the first three-way hole b41 to the right-side cylinder 1 and the inlet 7, and the second three-way hole b42 to the right-side cylinder 1 and the outlet 8. At this time, the right-side filter cartridge 2 operates normally for filtration, while the left-side filter cartridge 2 is stopped for cleaning and maintenance. When high-flow filtration is required, rotate the valve core 4 to connect the first three-way hole b41 to both cylinders 1 and the inlet 7 simultaneously, and the second three-way hole b42 to both cylinders 1 and the outlet 8 simultaneously. At this time, both cylinders 1 operate normally for filtration.

[0046] 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.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dual-stage filter, characterized in that, The dual filter includes: Two cylinders are provided; A filter cartridge is disposed inside the cylinder. A valve sleeve connects two of the cylinders simultaneously; a first three-way hole a and a second three-way hole a are provided on the valve sleeve; the first three-way hole a connects both of the cylinders and the water inlet simultaneously; the second three-way hole a connects both of the cylinders and the water outlet simultaneously. The valve core is located inside the valve sleeve; The valve core has a first three-way hole b aligned with the first three-way hole a, and a second three-way hole b aligned with the second three-way hole b; the valve core is fitted to the valve sleeve.

2. The dual-stage filter as described in claim 1, characterized in that: The cylinder has an opening on its upper side; a cover plate is provided for the opening on the upper side of the cylinder; a sealing gasket is provided between the cover plate and the cylinder; and an exhaust valve is provided on the cover plate.

3. The dual-stage filter as described in claim 1, characterized in that: As the valve core extends into the valve sleeve, its outer diameter gradually decreases.

4. The dual-stage filter as described in claim 1, characterized in that: The valve core extends into the end of the valve sleeve, with a gap between the valve core and the end of the valve sleeve.

5. The dual-stage filter as described in claim 1, characterized in that: The valve sleeve is open at both ends; a base plate is provided at one end of the valve sleeve, and a first pressure plate and a second pressure plate are provided at the other end of the valve sleeve; an O-ring is provided between the base plate and the valve sleeve; the first pressure plate and the second pressure plate are sleeved on the valve sleeve.

6. The dual filter as described in claim 5, characterized in that: A pressure ring is fitted onto the valve core between the first pressure plate and the second pressure plate.

7. The dual filter as described in claim 6, characterized in that: An annular groove is formed on the valve core around its axis; the annular groove is located on the side near the first pressure plate; and an O-ring is provided inside the annular groove.

8. The dual filter as described in claim 1, characterized in that: A bushing is also provided inside the valve sleeve; the bushing is fitted onto the valve core.

9. The dual filter as described in claim 1, characterized in that: The lower side of the cylinder is perforated and fitted with a stopcock.

10. The dual filter as described in claim 1, characterized in that: A handle is provided on the valve core.

Images