Bag type filter

Abstract

The utility model discloses a bag type filter, and relates to the technical field of filters, the bag type filter comprises a shell, a filter core is arranged in the shell, an exhaust pipe is arranged at the top of the shell, a lifting cylinder is slidably arranged in the exhaust pipe, a floating block is fixedly arranged at the bottom of the lifting cylinder, the floating block is located in the shell, and a plurality of exhaust holes are formed in the bottom of the outer side wall of the lifting cylinder at intervals; an air outlet hole is formed in the lifting cylinder in the axis direction of the lifting cylinder, the bottom of the air outlet hole communicates with the multiple exhaust holes, the top of the air outlet hole is open, a warning ring is arranged on the outer side wall of the lifting cylinder, a containing groove is formed in the bottom of the exhaust pipe, and a sealing ring is arranged on the portion, located on the inner side wall of the containing groove, of the exhaust pipe. The warning ring moves out of the top of the lifting cylinder. The alarm ring is used, so that a worker can directly observe whether liquid is full or not, meanwhile, the worker can be prompted to close the bag type filter in time, the sealing stability of the bag type filter is conveniently improved, and the filtering effect is guaranteed.

Description

Technical Field

[0001] This application relates to the field of filter technology, and in particular to a capsule filter. Background Technology

[0002] Envelope filters are a common filtration tool in small biological laboratories, primarily used for the rapid processing of liquid samples. Their core function is to remove impurities, particles, or microorganisms, ensuring the purity of the experimental liquids. By using envelope filters appropriately, small laboratories can significantly improve experimental efficiency and reliability while reducing the risk of contamination.

[0003] Existing capsule filters consist of a housing, inside which a filter element is installed, maintaining a distance between the filter element and the housing. An inlet is located at the bottom of the housing, and an outlet is located at the top. A drain pipe is installed at the bottom of the housing, and an vent pipe is installed at the top. When liquid enters the housing through the inlet, it forces gas out through the vent pipe. After the gas is completely expelled, the housing is filled with liquid, and filtration begins. However, it is difficult for operators to immediately determine whether venting is complete, so liquid can easily overflow after all the gas has been expelled. Utility Model Content

[0004] To reduce the problem of liquid overflow caused by operators' difficulty in making judgments, this application provides a capsule filter.

[0005] The capsule filter provided in this application adopts the following technical solution:

[0006] A capsule filter includes a housing, a filter element disposed inside the housing, an outlet and an inlet respectively at the top and bottom of the housing, an exhaust pipe and a drain pipe respectively at the top and bottom of the housing, a lifting cylinder slidably disposed inside the exhaust pipe, a float fixedly disposed at the bottom of the lifting cylinder, the float being located inside the housing, a plurality of exhaust holes spaced apart at the bottom of the outer side wall of the lifting cylinder, an air outlet hole disposed inside the lifting cylinder along its own axis, the bottom of the air outlet hole communicating with the plurality of exhaust holes, the top of the air outlet hole being open, a warning ring disposed on the outer side wall of the lifting cylinder, a receiving groove disposed at the bottom of the exhaust pipe, a sealing ring disposed on the inner side wall of the exhaust pipe located in the receiving groove, when the float moves to the bottom of the exhaust pipe, the warning ring moves out of the top of the lifting cylinder.

[0007] By adopting the above technical solution, as liquid enters the outer casing through the inlet and gradually increases, the gas inside the casing is discharged through the vent and outlet. At this time, the float causes the lifting cylinder to gradually rise. When the float rises and touches the bottom of the vent pipe, the gas discharge is complete and the outer casing is full of liquid. The warning ring moves out of the top of the lifting cylinder. When the operator observes the warning ring moving out, they pull the lifting cylinder upwards. The lifting cylinder moves the float upwards, causing the float to enter the receiving tank. At this time, the sealing ring forms a seal between the float and the vent pipe, ensuring that the liquid does not leak. Through the warning ring, the operator can directly observe whether the liquid is full, and it also serves as a reminder for the operator to pull the lifting cylinder in time, which helps to improve the sealing stability of the capsule filter and ensure the filtration effect.

[0008] Preferably, a slider is provided on the outer side wall of the lifting cylinder, and a groove is provided on the inner side wall of the exhaust pipe, with the slider slidably disposed in the groove.

[0009] By adopting the above technical solution, the slider slides in the groove of the exhaust pipe, so that the lifting cylinder will not fall into the outer shell. At the same time, the slider and the groove cooperate to guide the movement direction of the lifting cylinder, making the movement of the lifting cylinder more stable.

[0010] Preferably, a pull ring is provided at the top of the outer side wall of the lifting cylinder.

[0011] By adopting the above technical solution, the pull ring at the top of the lifting cylinder makes it easy for workers to lift the lifting cylinder upwards.

[0012] Preferably, the bottom of the receiving groove is flared.

[0013] By adopting the above technical solution, the bottom of the receiving tank is set as an flared opening, which facilitates the entry of the float into the receiving tank and timely forms a seal between the float and the exhaust pipe through the sealing ring and the receiving tank.

[0014] Preferably, the top of the float is provided with an annular chamfer.

[0015] By adopting the above technical solution, the top of the float is set with an annular chamfer, which facilitates the float entering the receiving groove and forms a seal between the float and the exhaust pipe in a timely manner through the sealing ring and the receiving groove.

[0016] Preferably, the warning ring is colored.

[0017] By adopting the above technical solution, the colored warning ring allows staff to directly observe and promptly determine whether the liquid level is full.

[0018] Preferably, the housing includes an upper housing and a lower housing, wherein the bottom of the upper housing and the top of the lower housing are threadedly detachably connected.

[0019] By adopting the above technical solution, the upper and lower shells are threaded and detachable, which facilitates the installation, disassembly and maintenance of the outer shell.

[0020] Preferably, the filter element is detachably installed in the upper housing via threads.

[0021] By adopting the above technical solution, the filter element is designed with a threaded, detachable structure, which facilitates the installation, disassembly, and replacement of the filter element.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Utilizing a float, lifting cylinder, and warning ring, as liquid enters the outer casing through the inlet and continuously increases, the gas inside the casing is discharged through the vent and outlet. At this time, the float drives the lifting cylinder to gradually rise. When the float rises and touches the bottom of the vent pipe, the gas discharge is complete and the outer casing is filled with liquid. The warning ring moves out of the top of the lifting cylinder. When the operator observes the warning ring moving out, they pull the lifting cylinder upwards. The lifting cylinder drives the float upwards, allowing the float to enter the receiving tank. At this time, the sealing ring forms a seal between the float and the vent pipe, ensuring that the liquid does not leak out. Through the warning ring, the operator can directly observe whether the liquid is full, and it also serves as a reminder for the operator to shut it off in time, which helps to improve the sealing stability of the capsule filter and ensure the filtration effect.

[0024] 2. With the help of a slider and a groove, the slider slides within the groove of the exhaust pipe, preventing the lifting cylinder from falling into the outer casing. At the same time, the slider and the groove work together to guide the movement of the lifting cylinder, making the movement of the lifting cylinder more stable.

[0025] 3. The pull ring at the top of the lifting cylinder makes it easy for workers to lift the lifting cylinder upwards. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of the overall structure of the capsule filter in this application;

[0027] Figure 2 For this application Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 This is a schematic diagram of the structure of the capsule filter in this application, highlighting a portion of the lifting cylinder.

[0029] Reference numerals: 1. Outer shell; 101. Upper shell; 102. Lower shell; 2. Filter element; 3. Liquid outlet; 4. Liquid inlet; 5. Exhaust pipe; 6. Drain pipe; 7. Lifting cylinder; 8. Float; 9. Exhaust hole; 10. Air outlet; 11. Warning ring; 12. Receiving groove; 13. Sealing ring; 14. Pull ring; 15. Slider; 16. Slide groove; 17. Chamfer. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0031] This application discloses a capsule filter.

[0032] Reference Figure 1 , Figure 2 and Figure 3 A capsule filter includes a housing 1, and a filter element 2 is installed inside the housing 1. There is a space between the filter element 2 and the inner wall of the housing 1 for liquid flow. The housing 1 consists of an upper housing 101 and a lower housing 102. The bottom of the upper housing 101 and the top of the lower housing 102 are detachably connected by threads. The filter element 2 is detachably installed inside the upper housing 101 by threads, which facilitates the installation, removal and replacement of the filter element 2.

[0033] The upper housing 101 has a liquid outlet 3 at its top and the lower housing 102 has a liquid inlet 4 at its bottom. An exhaust pipe 5 is fixedly installed inside the top wall of the upper housing 101, and a drain pipe 6 is fixedly installed inside the bottom wall of the lower housing 102. The liquid outlet 3 is located at the middle of the top of the upper housing 101, the exhaust pipe 5 is located on one side of the top of the upper housing 101, the liquid inlet 4 is located at the middle of the bottom of the lower housing 102, and the drain pipe 6 is located on one side of the bottom of the lower housing 102.

[0034] A lifting cylinder 7 is slidably installed inside the exhaust pipe 5 along its own axis. A pull ring 14 is fixedly installed on the top of the outer side wall of the lifting cylinder 7. The pull ring 14 is circular. A circular float 8 is fixedly installed at the bottom of the lifting cylinder 7. An annular chamfer 17 is formed on the top wall of the float 8, and the float 8 is located inside the upper housing 101 and close to the top of the upper housing 101.

[0035] Two sliders 15 are symmetrically fixedly installed on the outer wall of the lifting cylinder 7, and the sliders 15 are located in the middle of the outer wall of the lifting cylinder 7. Two grooves 16 are symmetrically opened on the inner wall of the exhaust pipe 5, and the grooves 16 are located in the middle of the inner wall of the exhaust pipe 5. The two sliders 15 are slidably installed in the two grooves 16 respectively, so that the lifting cylinder 7 will not detach from the exhaust pipe 5 and fall into the outer casing 1, and at the same time, it plays a guiding role in the movement direction of the lifting cylinder 7.

[0036] Four exhaust holes 9 are provided on the outer wall of the lifting cylinder 7. The four exhaust holes 9 are located at the bottom of the lifting cylinder 7 and are arranged at equal intervals along the axial direction of the lifting cylinder 7. An air outlet 10 is provided inside the lifting cylinder 7 along its own axial direction. The top of the air outlet 10 is open and the bottom of the air outlet 10 is connected to the four exhaust holes 9.

[0037] A warning ring 11 is marked on the outer wall of the lifting cylinder 7. The warning ring 11 is colored to facilitate the observation of the increase in liquid level by the staff. A receiving groove 12 is provided at the bottom of the exhaust pipe 5. The bottom of the receiving groove 12 is flared. A sealing ring 13 is embedded and fixedly installed on the inner wall of the receiving groove 12 of the exhaust pipe 5. In this application, the sealing ring 13 can be a rubber ring.

[0038] When liquid enters the outer casing 1 through the inlet 4 and continues to increase, the gas inside the outer casing 1 is discharged through the exhaust port 9 and the vent 10. At this time, the float 8 drives the lifting cylinder 7 to gradually rise. When the float 8 rises and touches the bottom of the exhaust pipe 5, the gas discharge is completed and the outer casing 1 is filled with liquid. At the same time, the warning ring 11 moves out of the top of the lifting cylinder 7.

[0039] When the float 8 moves to the bottom of the exhaust pipe 5, the flared opening of the receiving groove 12 and the annular chamfer 17 on the top of the float 8 facilitate the float 8 entering the receiving groove 12, and the warning ring 11 will move out of the top of the lifting cylinder 7. Through the warning ring 11, the staff can directly observe whether the liquid is full, and at the same time, it serves as a reminder for the staff to seal it in time.

[0040] When the staff observes that the warning ring 11 is removed, they promptly pull the lifting cylinder 7 upwards using the circular pull ring 14. The lifting cylinder 7 drives the float 8 upwards, causing the float 8 to enter the receiving groove 12. At this time, the sealing ring 13 forms a seal between the float 8 and the exhaust pipe 5, ensuring that the liquid will not leak out, thereby improving the sealing stability of the capsule filter and ensuring the filtration effect.

[0041] The implementation principle of a capsule filter according to an embodiment of this application is as follows: when the float 8 moves to the bottom of the exhaust pipe 5, the flared opening of the receiving groove 12 facilitates the float 8 entering the receiving groove 12, and the warning ring 11 will move out of the top of the lifting cylinder 7 accordingly. Through the warning ring 11, the staff can directly observe whether the liquid is full, and at the same time, it serves as a reminder for the staff to seal it in time.

[0042] When the gas is discharged through the vent 10, the liquid enters through the inlet 4 and increases continuously. At this time, the float 8 gradually rises. When the float 8 touches the bottom of the exhaust pipe 5, the gas discharge is completed and the outer casing 1 is filled with liquid. The warning ring 11 moves out of the top of the lifting cylinder 7.

[0043] When the staff observes that the warning ring 11 is removed, they promptly pull the lifting cylinder 7 upwards using the circular pull ring 14. The lifting cylinder 7 drives the float 8 upwards, causing the float 8 to enter the receiving groove 12. At this time, the float 8 forms a seal with the vent pipe 5 through the sealing ring 13 and the receiving groove 12, ensuring that the liquid will not leak out, thereby improving the sealing stability of the capsule filter and ensuring the filtration effect.

[0044] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A capsule filter, comprising a housing (1), a filter element (2) disposed inside the housing (1), an outlet (3) and an inlet (4) respectively disposed at the top and bottom of the housing (1), and an exhaust pipe (5) and a drain pipe (6) respectively disposed at the top and bottom of the housing (1), characterized in that: A lifting cylinder (7) is slidably disposed inside the exhaust pipe (5). A float (8) is fixedly disposed at the bottom of the lifting cylinder (7). The float (8) is located inside the outer shell (1). Multiple exhaust holes (9) are spaced apart at the bottom of the outer side wall of the lifting cylinder (7). An air outlet (10) is disposed inside the lifting cylinder (7) along its own axis. The bottom of the air outlet (10) is connected to the multiple exhaust holes (9). The top of the air outlet (10) is open. A warning ring (11) is disposed on the outer side wall of the lifting cylinder (7). A receiving groove (12) is disposed at the bottom of the exhaust pipe (5). A sealing ring (13) is disposed on the inner side wall of the exhaust pipe (5) located in the receiving groove (12). When the float (8) moves to the bottom of the exhaust pipe (5), the warning ring (11) moves out of the top of the lifting cylinder (7).

2. A capsule filter according to claim 1, characterized in that: A slider (15) is provided on the outer side wall of the lifting cylinder (7), and a groove (16) is provided on the inner side wall of the exhaust pipe (5). The slider (15) is slidably disposed in the groove (16).

3. A capsule filter according to claim 1, characterized in that: A pull ring (14) is provided on the top of the outer wall of the lifting cylinder (7).

4. A bladder filter according to claim 1, wherein: The bottom of the receiving groove (12) is flared.

5. A capsule filter according to claim 1, characterized in that: The top of the float (8) is provided with an annular chamfer (17).

6. A bladder filter according to claim 1, wherein: The warning ring (11) is set to color.

7. A bladder filter according to claim 1, wherein: The outer casing (1) includes an upper casing (101) and a lower casing (102), the bottom of the upper casing (101) and the top of the lower casing (102) being threadedly detachably connected.

8. A bladder filter according to claim 7, wherein: The filter element (2) is threadedly and detachably installed inside the upper housing (101).

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