A dual filter element device capable of three-valve control of forward and reverse flushing

Abstract

The utility model discloses a kind of double filter element devices of three valve control positive and negative washing, it is related to filter relevant technical field.The utility model includes two groups of symmetrically arranged shell;The inside of shell is provided with filter element, and the both ends of filter element pass through towards the two port positions of shell, and the both end surfaces of shell are provided with the sealing cover of sleeve joint in the both end positions of filter element, and three-way valve one is set between the sealing cover above shell, and the both port of three-way valve one is connected with the sealing cover port of similarity by spiral pipe and is screwed, and three-way valve two is set between the both sealing cover below shell, and the lower part of position between two groups of shell is provided with backflush pipe, and the port position of backflush pipe is connected with on-off valve.The utility model is used in cooperation with three-way valve one, three-way valve two and on-off valve, cooperates three-way valve control, so that backwash liquid enters two groups of filter element simultaneously, significantly improves cleaning efficiency, simultaneously realizes switching filter / backflush mode, and simplifies operation.

Description

Technical Field

[0001] This utility model belongs to the field of filter-related technology, and in particular relates to a dual-filter device with three-valve control for forward and reverse flushing. Background Technology

[0002] In the field of water treatment, especially in applications with high water quality requirements, filtration devices are a core component. As the filtration process continues, trapped impurities gradually clog the filter element pores, leading to decreased filtration efficiency, reduced water production, and increased system operating pressure, ultimately requiring filter element replacement. Frequent filter element replacement not only increases operating costs but also generates waste consumables, putting pressure on the environment and causing maintenance inconvenience. To extend filter element lifespan and reduce operating costs and maintenance frequency, the concept of washable filter elements has emerged. The core idea is to use water flow in reverse or a specific direction to flush the filter element, removing impurities adhering to its surface or interior and discharging them from the system. However, traditional dual-filter systems require individual operation of each filter element during backwashing, a cumbersome process that cannot achieve simultaneous flushing. Furthermore, multiple valves are needed to independently control the forward and reverse flushing processes, which is prone to errors. Therefore, we provide a dual-filter device with three valves controlling forward and reverse flushing to solve the aforementioned problems. Utility Model Content

[0003] The purpose of this invention is to provide a dual-filter device with three-valve control for forward and backwashing. By using three-way valve one, three-way valve two and on / off valve in combination, and with the control of the three-way valve, the backwashing liquid can enter both sets of filter elements at the same time, which significantly improves the cleaning efficiency and realizes the switching between filtration / backwashing modes, simplifying the operation.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model is a dual-filter device with three-valve control for forward and backwashing, comprising two sets of symmetrically arranged housings; each housing contains a filter element, with both ends of the filter element passing through the two ports of the housing; each end of the housing has a sealing cap fitted onto the two ends of the filter element; a three-way valve one is located between the sealing caps on the upper part of the housing, with its two ports threaded to the ports of the adjacent sealing caps via spiral tubes; a three-way valve two is located between the two sets of sealing caps on the lower part of the housing, with its two ends threaded to the ports of the adjacent sealing caps via spiral tubes; a backwash pipe is located at the lower part between the two sets of housings, and the backwash pipe is threaded to the interior of the housing via a pipe; an on / off valve is connected to the port of the backwash pipe.

[0006] The present invention is further configured such that the end face of the sealing cover near the shell is fixed with an inner concave portion, and the two end faces of the shell are fixed with an outer convex portion, with the inner concave portion inserted into the inner side of the outer convex portion.

[0007] The present invention is further provided that a sealing sleeve is provided between the shell and the sealing cover located between the outer convex part and the inner concave part, and both ends of the sealing sleeve are fixed with curved parts.

[0008] The present invention is further configured such that a positioning post is inserted into the interior of each set of curved parts, and a locking strip is provided between two sets of adjacent sealing sleeves.

[0009] The present invention is further configured such that two sets of positioning ring plates are fixed on the inner wall of the locking strip, which are positioned between the two ends of the sealing lock sleeve. The through holes penetrating the outer wall of the positioning post and the curved part are aligned with the inner side of the positioning ring plates. The locking strip is provided with a screw that spirals through the positioning ring plates, the positioning post and the curved part at one end.

[0010] This utility model has the following beneficial effects:

[0011] When backwashing the two sets of filter elements simultaneously, the two-way valves can be closed to allow the backwash fluid entering from inside the backwash pipe to enter the filter element through the housing, thereby backwashing the side wall of the filter element. Then, the backwash fluid will flow out from the position of the three-way valve. Since the backwash pipe is connected to the inside of the two sets of housings, the backwash fluid will enter the housing simultaneously, allowing the backwash fluid to backwash the filter element synchronously, thereby improving the backwashing efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is an exploded view of the structure of the shell, sealing cover, three-way valve one, and three-way valve two in this utility model.

[0015] Figure 3 This is a structural diagram of the shell, filter element and backflush tube in this utility model.

[0016] Figure 4 This is a structural assembly diagram of the sealing cap in this utility model.

[0017] Figure 5 This is an exploded view of the sealing lock sleeve in this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1-Housing, 101-Filter element, 102-Outer protrusion, 2-Sealing cover, 201-Inner recess, 3-Three-way valve one, 4-Sealing lock sleeve, 401-Bend, 402-Locking strip, 403-Positioning ring plate, 404-Screw, 405-Positioning post, 5-Backflush pipe, 501-Opening and closing valve, 6-Three-way valve two. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Example 1

[0022] Please see Figures 1 to 5 This utility model is a dual filter element 101 device that can control forward and backwashing with three valves. Through the coordinated use of three-way valve 3, three-way valve 6 and on / off valve 501, and with the control of the three-way valve, the backwashing liquid can enter the two filter elements 101 at the same time, which significantly improves the cleaning efficiency and realizes the switching of filtration / backwashing mode, simplifying the operation.

[0023] Specifically, there are two sets of symmetrically arranged housings 1; each housing 1 has a filter element 101 inside, with both ends of the filter element 101 passing through the two ports of the housing 1. Both ends of the housing 1 have sealing caps 2 that fit over the two ends of the filter element 101. A three-way valve 3 is located between the sealing caps 2 above the housing 1, and the two ports of the three-way valve 3 are threaded to the ports of the adjacent sealing caps 2 via spiral tubes. A three-way valve 6 is located between the two sets of sealing caps 2 below the housing 1, and the two ends of the three-way valve 6 are threaded to the ports of the adjacent sealing caps 2 via spiral tubes. A backflushing pipe 5 is located at the lower part between the two sets of housings 1, and the backflushing pipe 5 is threaded to the inside of the housing 1 via a pipe. An on / off valve 501 is connected to the port of the backflushing pipe 5.

[0024] The operation process of this embodiment is as follows: With the above-mentioned structural setup, the port of the three-way valve 3 is connected to one end of the water inlet pipe, the on / off valve 501 is closed, and the three-way valve 6 is opened. The liquid entering through the three-way valve 3 is filtered by the filter element 101, flows into the sealing cover 2 below the filter element 101, and flows out through the position of the three-way valve 6. When it is necessary to backwash the two sets of filter elements 101 simultaneously, the three-way valve 6 can be closed, so that the backwash liquid entering from the backwash pipe 5 enters the filter element 101 in the housing 1, thereby backwashing the side wall of the filter element 101. Then the backwash liquid will flow out from the position of the three-way valve 3. Since the backwash pipe 5 is connected to the inside of the two sets of housings 1, the backwash liquid will enter the housing 1 simultaneously, so that the backwash liquid will backwash the filter element 101 simultaneously, thereby improving the backwashing efficiency.

[0025] Example 2

[0026] Please see Figure 3 , Figure 4 and Figure 5 Based on embodiment 1, the positions of the protruding part 102 and the concave part 201 are clamped by the sealing lock sleeve 4 to ensure the stable connection between the sealing cover 2 and the housing 1.

[0027] Specifically, the sealing cover 2 has a concave portion 201 fixed on the end face near the housing 1, and the housing 1 has a convex portion 102 fixed on both ends. The concave portion 201 is inserted into the inner side of the convex portion 102. A sealing lock sleeve 4 is sleeved between the housing 1 and the sealing cover 2 between the convex portion 102 and the concave portion 201. Both ends of the sealing lock sleeve 4 are fixed with a bent portion 401. A positioning post 405 is inserted into the interior of each set of bent portions 401. A locking strip 402 is provided between two sets of adjacent sealing lock sleeves 4. The inner wall of the locking strip 402 is fixed with two sets of positioning ring plates 403 located between the two ends of the sealing lock sleeve 4. The through holes of the positioning post 405 and the bent portion 401 are consistent with the inner side of the positioning ring plate 403. The interior of the locking strip 402 is provided with a screw 404 that spirally passes through the positioning ring plate 403, the positioning post 405 and the bent portion 401.

[0028] The operation process of this embodiment is as follows: the outer protrusion 102 and the inner concave part 201 are directly locked by the corresponding sealing sleeve 4, and the screw 404 is passed through the through hole of the positioning ring plate 403, the positioning post 405 and the bending part 401, and the nut is screwed on the screw 404 that passes through multiple structures. In this way, the sealing sleeve 4 is locked, so that the sealing sleeve 4 tightly locks the outer protrusion 102 and the inner concave part 201, thereby ensuring a tight fit between the sealing cover 2 and the housing 1 and ensuring a stable connection between the two.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A dual-filter device with three-valve control for forward and reverse flushing, comprising two symmetrically arranged housings (1); characterized in that: The interior of each housing (1) is provided with a filter element (101). The two ends of the filter element (101) pass through the two ports of the housing (1). Both ends of the housing (1) are provided with sealing caps (2) that fit over the two ends of the filter element (101). A three-way valve (3) is provided between the sealing caps (2) above the housing (1). The two ports of the three-way valve (3) are threaded to the ports of the adjacent sealing caps (2) through a spiral tube. A three-way valve (6) is provided between the two sets of sealing caps (2) below the housing (1). The two ends of the three-way valve (6) are threaded to the ports of the adjacent sealing caps (2) through a spiral tube. A backflush pipe (5) is provided at the lower part between the two sets of housings (1). The backflush pipe (5) is threaded to the interior of the housing (1) through a pipe. An on / off valve (501) is connected to the port of the backflush pipe (5).

2. The dual-filter device with three-valve control for forward and reverse flushing according to claim 1, characterized in that, The sealing cover (2) has an inner recess (201) fixed on the end face near the housing (1), and the housing (1) has an outer protrusion (102) fixed on both ends. The inner recess (201) is inserted into the inner side of the outer protrusion (102).

3. The dual-filter device with three-valve control for forward and reverse flushing according to claim 2, characterized in that, A sealing sleeve (4) is fitted between the housing (1) located between the outer protrusion (102) and the inner concave part (201) and the sealing cover (2). Both ends of the sealing sleeve (4) are fixed with bent parts (401).

4. The dual-filter device with three-valve control for forward and reverse flushing according to claim 3, characterized in that, Each set of the curved portion (401) has a positioning post (405) inserted inside, and a locking strip (402) is provided between the two sets of adjacent sealing sleeves (4).

5. A dual-filter device with three-valve control for forward and reverse flushing according to claim 4, characterized in that, The inner wall of the locking strip (402) is fixed with two sets of positioning ring plates (403) positioned between the two ends of the sealing lock sleeve (4). The through holes penetrating the outer wall of the positioning post (405) and the bending part (401) are aligned with the inner side of the positioning ring plate (403). The interior of the locking strip (402) is provided with a screw (404) that spirally passes through the positioning ring plate (403), the positioning post (405), and the bending part (401) at one end.

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