Quartz sand filter with filter cap convenient to replace

Abstract

The utility model provides a quartz sand filter with a filter cap convenient to replace, which belongs to the technical field of quartz sand filters and comprises a filter body, a support frame is arranged at the bottom of the filter body, a filter plate is arranged in the support frame and the filter body, and support legs are arranged at the bottom of the filter plate. One end of each supporting leg is fixedly connected with the peripheral side of the bottom of the filter plate, the other end of each supporting leg is fixedly connected with the inner wall surface of the filter body, a plurality of filter caps are arranged on the upper surface of the filter plate, and sealing gaskets are arranged between the filter caps and the filter plate. The quartz sand filter solves the problems that in the back washing process of an existing quartz sand filter, a filter cap is damaged and loosened due to the fact that water flow is too large, the sealing performance between the filter cap and a filter plate is greatly reduced in the filtering process, unfiltered water flow enters a water outlet system through a gap, water quality is affected, and the service life of the filter cap is prolonged. And meanwhile, the simple design of the filter cap can cause non-uniform water flow distribution or dead angles to influence the flushing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of quartz sand filters, and particularly relates to a quartz sand filter facilitating the replacement of filter caps. Background Art

[0002] A quartz sand filter, scientifically named a shallow - layer medium filter, uses quartz sand as a filtering medium. Under a certain pressure, water with a relatively high turbidity is filtered through a certain thickness of granular or non - granular quartz sand, effectively intercepting and removing suspended solids, organic matter, colloidal particles, microorganisms, chlorine, odor, and some heavy metal ions in the water. Eventually, it is an efficient filtering device that achieves the effect of reducing water turbidity and purifying water quality.

[0003] During the backwashing process of the existing quartz sand filters, the filter caps may be damaged and loosened due to excessive backwashing water flow. As a result, during the filtering process, the sealing performance between the filter caps and the filter plate will be greatly reduced, allowing unfiltered water flow or backwashing water flow to directly enter the water outlet system through the gaps, affecting water quality. At the same time, during the backwashing process, the simple filter cap design may lead to uneven water flow distribution or the formation of dead corners, affecting the backwashing effect. Summary of the Invention

[0004] The utility model provides a quartz sand filter facilitating the replacement of filter caps, aiming to solve the problems that during the backwashing process of the existing quartz sand filters, the filter caps may be damaged and loosened due to excessive backwashing water flow, resulting in a significant reduction in the sealing performance between the filter caps and the filter plate during the filtering process, allowing unfiltered water flow or backwashing water flow to directly enter the water outlet system through the gaps, affecting water quality, and at the same time, the simple filter cap design during the backwashing process may lead to uneven water flow distribution or the formation of dead corners, affecting the backwashing effect.

[0005] An embodiment of the utility model provides a quartz sand filter facilitating the replacement of filter caps, including a filter body. A support frame is provided at the bottom of the filter body. Inside the filter body, there is a filter plate. Support feet are provided at the bottom of the filter plate. One end of each support foot is fixedly connected to the circumferential side of the bottom of the filter plate, and the other end is fixedly connected to the inner wall surface of the filter body. A plurality of filter caps are provided on the upper surface of the filter plate, and a sealing gasket is provided between the filter caps and the filter plate.

[0006] Further, the filter cap includes a connecting portion connected to the filter plate, a water inlet portion for admitting backwashing water flow, and a water outlet portion for discharging water. The water inlet portion is located at the lower end of the connecting portion, the water outlet portion is located at the upper end of the connecting portion, and the water inlet portion, the connecting portion, and the water outlet portion are integrally formed.

[0007] By adopting the above technical solution, the backwashing water flow can enter the connecting part through the water inlet part and flow uniformly from the water outlet part to the filter layer, so that the filter layer is flushed and cleaned by the backwashing water flow.

[0008] Further, the connecting part and the filter plate are connected by threads, and the inside of the connecting part is hollow.

[0009] By adopting the above technical solution, the connecting part and the filter plate are threadedly connected, so that the whole filter cap can be firmly fixed on the filter plate, preventing the filter cap from loosening due to excessive backwashing water flow during backwashing. At the same time, the hollow connecting part inside can facilitate the flow of water.

[0010] Further, the water inlet part passes through the filter plate and extends to the bottom of the filter plate, and a plurality of through holes are provided on the peripheral side of the bottom of the water inlet part.

[0011] By adopting the above technical solution, the backwashing water flow can enter the connecting part from the through holes, and can also enter the connecting part from the bottom of the water inlet part, so that the water flow can enter the connecting part from different directions during backwashing.

[0012] Further, a locking ring is threadedly connected to the upper end of the through hole at the bottom end of the water inlet part, and the locking ring is in close contact with the bottom wall surface of the filter plate.

[0013] By adopting the above technical solution, the locking ring can generate an upward locking force on the filter cap, further improving the fastening degree of the filter cap on the filter plate and preventing the filter cap from being washed off by the backwashing water flow.

[0014] Further, a groove is provided on the bottom wall surface of the water outlet part, the sealing gasket is arranged in the groove, and the water outlet part and the filter plate are fastened by bolts.

[0015] By adopting the above technical solution, the sealing gasket can prevent unfiltered water from flowing into the filter cap, greatly improving the overall sealing performance. At the same time, the water outlet part and the filter plate are fastened by bolts, further improving the fastening degree of the filter cap.

[0016] Further, a plurality of water outlet holes are provided on the water outlet part, and the water outlet holes are communicated with the middle cavity of the connecting part.

[0017] By adopting the above technical solution, the backwashing water flow can flow from the water outlet holes to the filter layer, so that the backwashing water flow can be dispersed, greatly improving the uniformity of water flow distribution and the washing effect.

[0018] The beneficial effects of the present utility model are as follows:

[0019] 1. Through the provision of the connecting part, the connecting part is threadedly connected to the filter plate, enabling the entire filter cap to be firmly fastened to the filter plate, preventing the filter cap from loosening due to excessive backwash water flow during backwashing. At the same time, the hollow connecting part inside facilitates the flow of water.

[0020] 2. Through the provision of the water inlet part, the backwash water flow can enter the connecting part through the through holes and can also enter the connecting part from the bottom of the water inlet part, enabling the water flow to enter the connecting part from different directions during backwashing.

[0021] 2. Through the provision of the water outlet part, the water outlet part is firmly fastened to the filter plate by bolts, further improving the fastening degree of the filter cap. At the same time, the backwash water flow can flow from the water outlet to the filter layer, enabling the backwash water flow to disperse, greatly improving the uniformity of water flow distribution and enhancing the flushing effect.

[0022] 2. Through the provision of the sealing gasket, the sealing gasket can prevent unfiltered water from flowing into the filter cap, greatly improving the overall sealing performance.

[0023] Other features and advantages of the present utility model will be described in the subsequent description, and, in part, will be apparent from the description or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are used to provide a further understanding of the present utility model and constitute a part of the description. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0025] Figure 1 is a front perspective structural schematic diagram of an embodiment of the present utility model;

[0026] Figure 2 is a structural schematic diagram of the filter cap of an embodiment of the present utility model;

[0027] Reference numerals: 1, filter body; 2, support frame; 3, filter plate; 4, support leg; 5, filter cap; 51, connecting part; 52, water inlet part; 521, through hole; 522, locking ring; 53, water outlet part; 531, groove; 532, water outlet; 6, sealing gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the objectives, technical solutions, and advantages of the technical solutions of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings of specific embodiments of the present utility model. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0029] Referring to Figure 1-2 , an embodiment of the present utility model provides a quartz sand filter that is convenient for replacing the filter cap, including a filter body 1. A support frame 2 is provided at the bottom of the filter body 1. Inside the filter body 1, a filter plate 3 is provided. A support leg 4 is provided at the bottom of the filter plate 3. One end of the support leg 4 is fixedly connected to the peripheral side of the bottom of the filter plate 3, and the other end is fixedly connected to the inner wall surface of the filter body 1. A plurality of filter caps 5 are provided on the upper surface of the filter plate 3. A sealing gasket 6 is provided between the filter cap 5 and the filter plate 3. The filter cap 5 includes a connecting portion 51 connected to the filter plate 3, a water inlet portion 52 for introducing backwash water flow, and a water outlet portion 53 for discharging water. The water inlet portion 52 is located at the lower end of the connecting portion 51, and the water outlet portion 53 is located at the upper end of the connecting portion 51. The water inlet portion 52, the connecting portion 51, and the water outlet portion 53 are integrally formed. The backwash water flow can enter the connecting portion 51 through the water inlet portion 52 and uniformly flow from the water outlet portion 53 to the filter layer, so that the filter layer is washed and dispersed by the backwash water flow.

[0030] Referring to Figure 1-2, the connecting part 51 and the filter plate 3 are connected by threads. The inside of the connecting part 51 is hollow. The connecting part 51 is threadedly connected to the filter plate 3, so that the entire filter cap 5 can be firmly fixed on the filter plate 3, preventing the filter cap 5 from loosening due to excessive backwashing water flow during backwashing. At the same time, the hollow connecting part 51 inside facilitates the flow of water. The water inlet part 52 passes through the filter plate 3 and extends to the bottom of the filter plate 3. A number of through holes 521 are provided on the peripheral side of the bottom of the water inlet part 52. The backwashing water flow can enter the connecting part 51 from the through holes 521, and can also enter the connecting part 51 from the bottom of the water inlet part 52, so that the water flow can enter the connecting part 51 from different directions during backwashing. A locking ring 522 is threadedly connected to the upper end of the through hole 521 at the bottom end of the water inlet part 52. The locking ring 522 is in close contact with the bottom wall surface of the filter plate 3. The locking ring 522 can generate an upward locking force on the filter cap 5, further improving the fastening degree of the filter cap 5 on the filter plate 3 and preventing the filter cap 5 from being washed off by the backwashing water flow. A groove 531 is provided on the bottom wall surface of the water outlet part 53. The sealing gasket 6 is arranged in the groove 531. The water outlet part 53 and the filter plate 3 are fastened by bolts. The sealing gasket 6 can prevent unfiltered water from flowing into the filter cap 5, greatly improving the overall sealing performance. At the same time, the water outlet part 53 and the filter plate 3 are fastened by bolts, further improving the fastening degree of the filter cap 5. A number of water outlet holes 532 are provided on the water outlet part 53. The water outlet holes 532 are communicated with the middle cavity of the connecting part 51. The backwashing water flow can flow from the water outlet holes 532 to the filter layer, so that the backwashing water flow can be dispersed, greatly improving the evenness of water flow distribution and the washing effect.

[0031] The specific implementation method is as follows: When in use, the filter cap 5 is installed on the filter plate 3. First, screw the connecting part 51 into the filter plate 3 by threads. When there is still a certain gap between the bottom of the water outlet part 53 and the filter plate 3, then place the sealing gasket 6 in the groove 531, and then screw down the connecting part 51 so that the sealing gasket 6 is firmly fixed in the groove 531. Then screw in bolts from the bottom of the filter plate 3 to further fasten the filter cap 5 on the filter plate 3. Fasten the upper surface of the water outlet part 53 of the filter cap 5 and the filter plate 3 with bolts again to further improve the fastening degree between the filter cap 5 and the filter plate 3. In cooperation with the sealing gasket 6, it effectively avoids the situation that the filter cap 5 loosens and is damaged and then becomes unsealed under the impact of the backwashing water flow. At the same time, the through holes 521 on the filter cap 5 enable the water flow to enter the connecting part 51 from different directions during backwashing. At the same time, the backwashing water flow can flow from the water outlet holes 532 on the filter cap 5 to the filter layer, so that the backwashing water flow can be dispersed, greatly improving the evenness of water flow distribution and the washing effect.

[0032] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A quartz sand filter with an easily replaceable filter cap, comprising a filter body (1), characterized in that: A support frame (2) is provided at the bottom of the filter body (1), a filter plate (3) is provided inside the support frame (2) and the filter body (1), a support foot (4) is provided at the bottom of the filter plate (3), one end of the support foot (4) is fixedly connected to the bottom peripheral side of the filter plate (3), and the other end is fixedly connected to the inner wall surface of the filter body (1), a plurality of filter caps (5) are provided on the upper surface of the filter plate (3), and a sealing gasket (6) is provided between the filter cap (5) and the filter plate (3).

2. A quartz sand filter with easy filter cap replacement according to claim 1, characterized in that: The filter cap (5) comprises a connecting portion (51) connected to the filter plate (3), a water inlet portion (52) for receiving a backwash water flow, and a water outlet portion (53) for discharging water, wherein the water inlet portion (52) is located at the lower end of the connecting portion (51), and the water outlet portion (53) is located at the upper end of the connecting portion (51); the water inlet portion (52), the connecting portion (51), and the water outlet portion (53) are integrally formed.

3. A quartz sand filter with easy filter cap replacement according to claim 2, characterized in that: The connection portion (51) is connected to the filter plate (3) via threads, and the interior of the connection portion (51) is hollow.

4. A quartz sand filter with easy filter cap replacement according to claim 2, characterized in that: The water inlet (52) passes through the filter plate (3) and extends to the bottom of the filter plate (3), and a plurality of through holes (521) are provided around the bottom of the water inlet (52).

5. A quartz sand filter with easy filter cap replacement according to claim 4, characterized in that: The bottom end of the water inlet portion (52) is located at the upper end of the through hole (521) and is threadedly connected with a locking ring (522), and the locking ring (522) is tightly attached to the bottom wall surface of the filter plate (3).

6. The quartz sand filter with easy filter cap replacement according to claim 2, characterized in that: The bottom wall surface of the water outlet portion (53) is provided with a groove (531), the sealing gasket (6) is arranged in the groove (531), and the water outlet portion (53) and the filter plate (3) are fastened by bolts.

7. A quartz sand filter with easy filter cap replacement according to claim 6, characterized in that: The water outlet portion (53) is provided with a plurality of water outlets (532), and the water outlets (532) are communicated with the middle cavity of the connecting portion (51).

Images