A filter assembly for use in a purification tank

Abstract

This utility model relates to the technical field of circulating water purification and filtration, specifically to a filter assembly for use in a purification tank. It includes a discharge pipe connected to the purification tank, with at least one discharge branch pipe connected to the end of the discharge pipe furthest from the purification tank. Each discharge branch pipe is equipped with a valve, and each branch pipe contains a detachable filter element designed to prevent sediment from passing through while allowing liquid flow. The filter element is positioned along the liquid flow direction in the discharge branch pipe and located behind the valve. This utility model provides a filter assembly for use in a purification tank that can reduce sediment generated by chemical reactions in the discharged water at the discharge pipe location.

Description

Technical Field

[0001] This utility model relates to the technical field of circulating water purification and filtration, specifically to a filtration component for use in a purification tank. Background Technology

[0002] A purification tank is a water treatment structure that removes pollutants from water through physical, chemical, or biological processes to meet environmental protection requirements. It can be used in circulating water systems. Purification tanks can be classified according to their treatment process and pollutant removal mechanism into physical purification tanks (removing suspended solids and particulate matter), chemical purification tanks (removing dissolved pollutants), and biological purification tanks (utilizing microorganisms to degrade organic matter).

[0003] Since our company's main product is sulfuric acid, the wastewater discharged during the sulfuric acid production process typically contains various dissolved pollutants, such as strong acid pollutants, sulfur and its compounds, and heavy metal ions. Therefore, we use chemical purification ponds to treat the wastewater so that the discharged wastewater meets environmental standards. This is achieved by adding acid / alkali agents to adjust the pH value, adding coagulants to adjust the turbidity, and adding oxidants or reducing agents to degrade pollutants.

[0004] Therefore, the purification tank usually discharges water that meets environmental protection requirements through the discharge pipe. However, during this process, when the water that meets environmental protection requirements enters the reuse facility, it still carries some of the sediment produced by the chemical reaction, which can easily cause blockage in the reuse equipment and prevent it from being used effectively. To address this, we have optimized and improved the discharge pipe of the purification tank, which can reduce the sediment produced by the chemical reaction in the discharged water at the discharge pipe location, and also ensure continuous use while reducing the sediment produced by the chemical reaction. Utility Model Content

[0005] The present invention aims to provide a filter assembly for use in a purification tank, which can reduce the sediment produced by chemical reactions in the discharged water at the discharge pipe location.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A filtration assembly for a purification tank includes a discharge pipe connected to the purification tank, with at least one discharge branch pipe connected to the end of the discharge pipe away from the purification tank. Each discharge branch pipe is equipped with a valve, and each discharge branch pipe is detachably installed with a filter element for preventing sediment from passing through and for allowing liquid to pass through. The filter element is disposed in the discharge branch pipe along the liquid flow direction and at the rear end of the valve.

[0008] Furthermore, the discharge branch pipe consists of two pipes and includes a linkage structure for synchronizing the opening and closing of two valves on the two discharge branch pipes in opposite directions. The linkage structure includes a screw rotatably mounted above the two discharge branch pipes. The two ends of the screw have threaded grooves with opposite directions of rotation. A first nut sleeve and a second nut sleeve are respectively fitted onto the two threaded grooves. A first rack is fixed on one side of the first nut sleeve, and a second rack is fixed on one side of the second nut sleeve. A valve stem is rotatably mounted on each of the two valves. A first gear that meshes with the first rack is provided on the valve stem corresponding to the first nut sleeve, and a second gear that meshes with the second rack is provided on the valve stem corresponding to the second nut sleeve.

[0009] Furthermore, the filter element includes a filter plate that is detachably and fixedly connected to the discharge branch pipe. The filter plate is circular, and its diameter is the same as that of the discharge branch pipe. A filter hole is provided in the middle of the filter plate, and a cylindrical filter element is detachably and fixedly connected to the filter hole.

[0010] Furthermore, one end of the filter element is provided with an external thread, and the filter hole is provided with an internal thread that matches the external thread.

[0011] Furthermore, the discharge branch pipe includes a first branch pipe and a second branch pipe, which are connected by a flange. The filter plate protrudes outward in the circumferential direction to form a ring. The ring is provided with through holes that correspond one-to-one with the threaded holes of the flange. The flange and the ring are connected by bolts passing through the threaded holes and through holes in sequence.

[0012] Furthermore, the linkage structure also includes a handwheel sleeved in the middle of the screw, and the handwheel is fixedly connected to the middle of the screw.

[0013] Furthermore, it also includes a diversion pipe, which is Y-shaped and has a main pipe and two branch pipes. The main pipe is connected to the end of the discharge pipe away from the purification tank, and the two branch pipes are respectively connected to two discharge branch pipes.

[0014] The beneficial effects of this utility model are as follows:

[0015] The valve on the discharge branch pipe remains open during the drainage process from the purification tank. After the treated water meeting environmental requirements is discharged from the purification tank, it first passes through the discharge pipe connected to the purification tank, then through the discharge branch pipe. During this process, the water first passes through the open valve, then through a filter element installed inside the branch pipe. Sediment in the water is blocked from passing through the filter element, allowing the filtered water to continue flowing through before finally being discharged from the branch pipe. When the filter element in the discharge branch pipe needs replacement or maintenance, the valve must first be closed, and then the filter element can be disassembled and replaced. After the filter element is replaced and installed, the valve can be reopened, allowing the water meeting environmental requirements to continue being filtered and discharged from the branch pipe.

[0016] This invention relates to a filter assembly for use in a purification tank, which can reduce the sediment produced by chemical reactions in the discharged water at the discharge pipe location.

[0017] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0018] Figure 1 This is a top view of Example 1;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a cross-sectional view of a filter element in a filtration assembly for use in a purification tank according to the present invention.

[0021] Figure 4 This is a top view of Example 2.

[0022] In the diagram: 1. Discharge pipe; 2. Discharge branch pipe; 21. First branch pipe; 22. Second branch pipe; 31. Valve stem; 41. Filter plate; 42. Filter element; 43. Ring; 51. Screw; 52. First nut sleeve; 53. First rack; 54. Second nut sleeve; 55. Second rack; 56. First gear; 57. Second gear; 58. Handwheel; 6. Diverter pipe; 7. Bolt; 8. Nut. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0028] Example 1

[0029] Please see Figures 1-3 This utility model provides a technical solution: a filter assembly for a purification tank, including a discharge pipe 1 connected to the purification tank, a discharge branch pipe 2 connected to the end of the discharge pipe 1 away from the purification tank, a valve provided on the discharge branch pipe 2, and a filter element for preventing sediment from passing through and for allowing liquid to pass through is detachably installed inside the discharge branch pipe 2, the filter element being located in the direction of liquid flow of the discharge branch pipe 2 and at the rear end of the valve.

[0030] The valve on the discharge branch pipe 2 remains open during the drainage process of the purification tank.

[0031] After the treated water that meets environmental protection requirements in the purification tank is discharged, it first passes through the discharge pipe 1 connected to the purification tank, and then through the discharge branch pipe 2. During the process of the water that meets environmental protection requirements passing through the discharge branch pipe 2, it first passes through the valve that is kept open, and then through the filter element installed in the discharge branch pipe 2. The sediment in the water that meets environmental protection requirements is blocked by the filter element. The filtered water continues to pass through the filter element and is finally discharged from the discharge branch pipe 2.

[0032] When the filter element in the discharge branch pipe 2 needs to be replaced or repaired, first close the valve, and then the filter element can be disassembled and replaced. After the filter element has been replaced and installed, the valve can be reopened, and water that meets environmental protection requirements can continue to be filtered and discharged from the discharge branch pipe 2.

[0033] This utility model discloses a filter assembly for use in a purification tank, which can reduce the sediment produced by chemical reactions in the discharged water at the discharge pipe 1.

[0034] In this embodiment, the filter element includes a filter plate 41 detachably and fixedly connected to the discharge branch pipe 2. The filter plate 41 is made of stainless steel, is circular, and its diameter is the same as that of the discharge branch pipe 2. A filter hole is provided in the middle of the filter plate 41, and a cylindrical filter element 42 with a 5µm filtration level is detachably and fixedly connected inside the filter hole. With this structure, the filter element can be detachably installed in the discharge branch pipe 2, and the filter element can not only prevent the passage of sediment but also allow the passage of liquid.

[0035] The filter plate 41 is made of stainless steel to prevent corrosion and rust, extending its service life. The filter plate 41 is circular, and its diameter is the same as that of the discharge branch pipe 2, ensuring that water can only pass through the filter element 42, resulting in better filtration. Furthermore, since the filter element 42 is detachably fixed inside the filter holes, when replacing or repairing the filter components, if the filter plate 41 is not damaged, only the filter element 42 can be disassembled and replaced, without replacing the entire filter component, thus saving costs.

[0036] In this embodiment, one end of the filter element 42 is provided with an external thread, and the filter hole is provided with an internal thread that matches the external thread. With this structure, the filter element 42 can be detachably and fixedly connected to the filter hole.

[0037] In this embodiment: the discharge branch pipe 2 includes a first branch pipe 21 and a second branch pipe 22, which are connected by a flange. The filter plate 41 protrudes outward in a circumferential direction to form a ring 43. The ring 43 is provided with through holes that correspond one-to-one with the threaded holes of the flange. The flange and the ring 43 are connected by bolts 7 passing through the threaded holes and through holes in sequence. The ring 43 can be clamped and fastened between the flanges by nuts 8 that are compatible with the bolts 7. During disassembly, only the nuts 8 need to be loosened and the bolts 7 need to be removed to remove the entire filter element. With this structure, the filter plate 41 can be detachably and fixedly connected inside the discharge branch pipe 2.

[0038] In addition, in this embodiment, a sealing ring is provided between the ring 43 and the flange. The sealing ring can be made of acid and alkali resistant polytetrafluoroethylene. The sealing ring can improve the sealing effect of the ring 43 between the first branch pipe 21 and the second branch pipe 22.

[0039] Example 2

[0040] Please see Figure 4 The difference between this embodiment and embodiment one is that there are two discharge branch pipes 2, and a linkage structure is also included to enable the two valves on the two discharge branch pipes 2 to perform opposite opening and closing actions synchronously. The linkage structure includes a screw 51 rotatably mounted above the two discharge branch pipes 2. The two ends of the screw 51 are provided with threaded grooves with opposite directions of rotation. A first nut sleeve 52 and a second nut sleeve 54 are respectively fitted on the two threaded grooves. A first rack 53 is fixed on one side of the first nut sleeve 52, and a second rack 55 is fixed on one side of the second nut sleeve 54. A valve stem 31 is rotatably provided on both valves. A first gear 56 that meshes with the first rack 53 is provided on the valve stem 31 corresponding to the first nut sleeve 52, and a second gear 57 that meshes with the second rack 55 is provided on the valve stem 31 corresponding to the second nut sleeve 54.

[0041] During the drainage process of the purification tank, the valve on one of the two discharge branch pipes 2 (hereinafter referred to as the first discharge branch pipe) is kept open, while the valve on the other (hereinafter referred to as the second discharge branch pipe) is kept closed.

[0042] After the treated water that meets environmental protection requirements is discharged from the purification tank, it first passes through the discharge pipe 1 connected to the purification tank, and then through the first discharge branch pipe whose valve is not closed. During the process of the water that meets environmental protection requirements passing through the first discharge branch pipe, it will pass through the filter element installed in the first discharge branch pipe. The sediment in the water that meets environmental protection requirements is blocked from passing through the filter element. The filtered water continues to pass through the filter element and is finally discharged from the first discharge branch pipe.

[0043] When the filter element in the first discharge branch pipe needs replacement or maintenance, the linkage structure causes the valves on the two discharge branch pipes 2 to simultaneously perform opposite opening and closing actions. This closes the valve on the first discharge branch pipe while simultaneously opening the valve on the second discharge branch pipe, allowing water to be continuously discharged and filtered, thus reducing sediment produced by chemical reactions in the water. When the valve on the first discharge branch pipe is completely closed, it is easy for personnel to remove and replace the filter element. The dual-channel structure enables uninterrupted filtration without stopping the machine during switching, avoiding interruptions in purification operations. The linkage structure ensures that the two valves are always in a complementary state, eliminating the risk of misoperation.

[0044] When the screw 51 rotates, because the threaded grooves at the two ends of the screw 51 rotate in opposite directions, the first nut sleeve 52 and the second nut sleeve 54 move synchronously relative to each other or towards each other. This causes the first rack 53 and the second rack 55 to also move synchronously relative to each other or towards each other. This causes the first gear 56 meshing with the first rack 53 and the second gear 57 meshing with the second rack 55 to rotate synchronously in opposite directions. Consequently, the valve stem 31 corresponding to the first nut sleeve 52 and the valve stem 31 corresponding to the second nut sleeve 54 rotate synchronously in opposite directions. In other words, the valve corresponding to the first nut sleeve 52 and the valve corresponding to the second nut sleeve 54 synchronously perform opposite opening and closing actions. With this structure, the linkage mechanism can be used to make two valves synchronously perform opposite opening and closing actions.

[0045] This embodiment not only reduces the sediment produced by chemical reactions in the discharged water at the discharge pipe 1, but also ensures continuous use while reducing the sediment produced by chemical reactions.

[0046] In this embodiment, the linkage structure also includes a handwheel 58 sleeved in the middle of the screw 51, which is fixedly connected to the middle of the screw 51. By rotating the handwheel 58, the screw 51 can be rotated. Setting it in the middle of the screw 51 provides more stable torque transmission compared to setting it at both ends.

[0047] In this embodiment, the screw 51 is rotatably mounted via a rotating shaft structure. The rotating shaft structure includes at least two bearing seats fixedly mounted on the ground. Both ends of the screw 51 are rotatably connected to the bearing seats via rolling bearings. With this structure, the screw 51 can be rotatably mounted above the two rows of branch pipes 2.

[0048] In this embodiment, a branch pipe 6 is also included. The branch pipe 6 is Y-shaped and has a main pipe and two branch pipes. The main pipe is connected to the end of the discharge pipe 1 away from the purification tank. The main pipe is welded to the end of the discharge pipe 1 away from the purification tank. The inner diameter of the main pipe is the same as that of the discharge pipe 1. The two branch pipes branch symmetrically at a 45° angle. Each branch pipe corresponds to and is connected to one of the two discharge branch pipes 2. The ends of the branch pipes are connected to the two discharge branch pipes 2 through flanges. The Y-shaped structure can reduce fluid resistance loss, and the symmetrical branch design can make the flow rates of the two channels as consistent as possible. The compact Y-shaped structure not only saves installation space but also avoids the turbulence problem of traditional T-shaped branch pipes.

[0049] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A filter assembly for use on a purification tank comprising a drain pipe in communication with the purification tank, characterised in that, The end of the discharge pipe away from the purification tank is connected to at least one discharge branch pipe. Each discharge branch pipe is equipped with a valve. Each discharge branch pipe is detachably installed with a filter element for preventing sediment from passing through and for allowing liquid to pass through. The filter element is located in the discharge branch pipe along the liquid flow direction and at the rear end of the valve.

2. A filter assembly for a purification tank as claimed in claim 1, wherein: The discharge branch pipe consists of two pipes and includes a linkage structure for synchronizing the opening and closing of two valves on the two discharge branch pipes in opposite directions. The linkage structure includes a screw rotatably mounted above the two discharge branch pipes. The two ends of the screw have threaded grooves with opposite directions of rotation. A first nut sleeve and a second nut sleeve are respectively fitted on the two threaded grooves. A first rack is fixed on one side of the first nut sleeve, and a second rack is fixed on one side of the second nut sleeve. A valve stem is rotatably mounted on each of the two valves. A first gear that meshes with the first rack is provided on the valve stem corresponding to the first nut sleeve, and a second gear that meshes with the second rack is provided on the valve stem corresponding to the second nut sleeve.

3. A filter assembly for a purification basin according to either of claims 1 or 2, characterized in that: The filter element includes a filter plate that is detachably and fixedly connected to the discharge branch pipe. The filter plate is circular and its diameter is the same as that of the discharge branch pipe. A filter hole is provided in the middle of the filter plate, and a cylindrical filter element is detachably and fixedly connected to the filter hole.

4. A filter assembly for a purification tank as claimed in claim 3, wherein: One end of the filter element is provided with an external thread, and the filter hole is provided with an internal thread that matches the external thread.

5. A filter assembly for a purification tank as claimed in claim 3, wherein: The discharge branch pipe includes a first branch pipe and a second branch pipe, which are connected by a flange. The filter plate protrudes outward in the circumferential direction to form a ring. The ring is provided with through holes that correspond one-to-one with the threaded holes of the flange. The flange and the ring are connected by bolts passing through the threaded holes and through holes in sequence.

6. A filter assembly for a purification tank as claimed in claim 2, wherein: The linkage structure also includes a handwheel sleeved in the middle of the screw, and the handwheel is fixedly connected to the middle of the screw.

7. A filter assembly for a purification tank according to claim 2, characterized in that: It also includes a diversion pipe, which is Y-shaped and has a main pipe and two branch pipes. The main pipe is connected to the end of the discharge pipe away from the purification tank, and the two branch pipes are respectively connected to two discharge branch pipes.

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