An adaption device

Abstract

The present invention provides an adapter, the circular tube parts at both ends of the adapter, the diameter of the tube body that the adapter seals with the clean water outlet is smaller than the diameter of the tube body that it seals with the membrane shell, the length of the seal fitting section between the adapter and the membrane shell is smaller than the length of the seal fitting section with the clean water outlet, the step in the middle of the adapter cooperates with the circular tubular skirt at the tail of the clean water outlet to form a water-filled chamber, and there are multiple overflow channels on the skirt of the clean water outlet, the overflow channels can be of equal cross-section or variable cross-section, and there are multiple overflow and exhaust holes at the bottom. The adapter provided by the present invention can automatically adapt to the contraction of the membrane element and buffer the impact of the expansion of the membrane element, prevent the adapter from detaching from the membrane element or the clean water outlet, causing leakage in the membrane shell, or reduce component damage caused by the shrinkage and rebound of the membrane element.

Description

Technical Field

[0001] The invention relates to the technical field of membrane water treatment, in particular to an adapter which can automatically adapt to the contraction of a membrane element and buffer the impact of the expansion of the membrane element. Background Art

[0002] The current connection method between the membrane housing adapter and the purified water outlet and membrane element for water treatment has the following disadvantages:

[0003] 1. When the membrane element shrinks under the pressure inside the membrane shell, the adapter separates from the membrane element and internal leakage occurs; as shown in the left pictures of 4 and 5. The installation of the traditional adapter requires the installation of multiple gaskets 7 between the clean water outlet 1 and the adapter 2, so that the gap between the sealing end plate 4 of the membrane shell 3 and the membrane element 6 due to component tolerance is filled as much as possible, so as to avoid that after the water with pressure P1 enters the membrane shell through the side port 5, the adapter 2 moves toward the sealing end plate 4 under the pressure of the pressure difference P1-P2, and the membrane element 6 moves in the opposite direction, causing the adapter to separate from the center tube of the membrane element 6, or the sealing ring on the adapter slides to the expansion area at the end of the center tube, causing the seal to fail and internal leakage to occur. At the same time, due to the influence of the combined size of the adapter and the clean water outlet, it is impossible to increase the number of gaskets 7 to fill the excessive gap.

[0004] Second, when the pressure is reduced and the membrane element recovers and stretches, it impacts the adapter and the clean water outlet, causing component damage or cracking of the center tube of the membrane element. When the system is shut down, the high-pressure pump stops working. The internal pressure of the membrane shell recovers from P1 to normal pressure P0. At this time, the membrane element recovers from the compressed state. Since the adapter and the membrane element are separated at this time, the membrane element expands rapidly, and the center tube part will impact the adapter, and then impact the clean water outlet.

[0005] Therefore, it is urgent to design an adapter that can automatically adapt to the contraction of the membrane element and buffer the impact of the expansion of the membrane element to solve the above-mentioned problems. Summary of the invention

[0006] The invention provided by the present invention aims to provide an adapter device, which can be closely attached to the membrane element during operation by matching the diameter and length of the mounting section at both ends of the adapter, thereby compensating for the change in the internal gap of the membrane shell. At the same time, the water-filled chamber formed by the middle section of the adapter and the skirt of the clean water outlet is used to control the drainage when the compressed membrane element rebounds, slow down the movement speed of the membrane element and the adapter, and reduce the impact on various components.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an adapter device, the circular tube parts at both ends of the adapter, the diameter of the tube body that the adapter seals with the clean water outlet is smaller than the diameter of the tube body that it seals with the membrane shell.

[0008] Preferably, the length of the sealing fitting section between the adapter and the membrane housing is shorter than the length of the sealing fitting section between the adapter and the clean water outlet.

[0009] Preferably, the step in the middle of the adapter cooperates with the tubular skirt at the tail of the clean water outlet to form a water-filled chamber, and there are multiple overflow channels on the clean water outlet skirt, which can be of constant cross-section or variable cross-section, and there are multiple overflow and exhaust holes at the bottom.

[0010] The present invention provides an adapting device having the following beneficial effects:

[0011] The adapter is designed with the diameter and length of the mounting section at both ends of the adapter, so that the adapter can always be in close contact with the membrane element during operation to compensate for the change in the internal gap of the membrane shell. At the same time, the water-filled chamber formed by the middle section of the adapter and the skirt of the clean water outlet is used to control the drainage when the compressed membrane element rebounds, slowing down the movement speed of the membrane element and the adapter and reducing the impact on various components. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 The adapter of the present invention is a three-view diagram, a sectional view and an axonometric view;

[0013] Attached Figure 2 The three views, sectional view and axonometric view of the purified water outlet of the present invention;

[0014] Attached Figure 3 This is an installation diagram of the adapter of the present invention;

[0015] Attached Figure 4 It is a comparative illustration diagram of the installation of the present invention;

[0016] Attached Figure 5 This is a comparative illustration of the working principle of the present invention.

[0017] In the figure: 1 clean water outlet, 2 adapter, 3 membrane shell, 4 sealing end plate, 5 side port, 6 membrane element, 7 gasket, 11 clean water outlet of the prior art, 21 clean water outlet pipe section of the prior adapter, D diameter of the central pipe pipe section of the membrane shell of the prior adapter. DETAILED DESCRIPTION

[0018] The present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0019] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1-5 As shown, an adapter device, the circular tube parts at both ends of the adapter, the diameter of the tube body of the adapter and the clean water outlet are smaller than the diameter of the tube body of the adapter and the membrane shell.

[0021] Figure 1 The pipe diameter D1 of the adapter and the clean water outlet sealing installation section is smaller than the pipe diameter D2 of the adapter and the membrane element center pipe sealing installation section. At the same time, section D1 is longer than section D2.

[0022] Adapter pipe diameter D1 end with Figure 2 The installation of the clean water outlet shown in the figure has a skirt, on which there is a flow channel C and a small hole B for exhaust and pressure relief. Figure 3 As shown, the middle section D3 of the adapter cooperates with the skirt portion of the purified water outlet to form a water-filled chamber A, and the end of the adapter pipe diameter D2 cooperates with the central tube of the membrane element for installation.

[0023] like Figure 5As shown in the schematic diagram on the right, since D1 is smaller than D2, driven by the pressure difference P1-P2 between the internal pressure P1 of the membrane shell and the internal pressure P2 of the center tube, the adapter will be close to the center tube of the membrane element and move with the contraction of the membrane element. This ensures the seal between the adapter and the membrane element. At the same time, the longer D1 section of the adapter can provide sufficient compensation length to ensure the seal between the adapter and the clean water outlet. At this time, the chamber A is filled with water and becomes longer through the small hole B and the flow channel C. The diameter and length design of the mounting section at both ends of the adapter can make the adapter always close to the membrane element during operation to compensate for the change in the internal gap of the membrane shell. At the same time, the water-filled chamber formed by the cooperation between the middle section of the adapter and the skirt of the clean water outlet can control the drainage when the compressed membrane element rebounds, slow down the movement speed of the membrane element and the adapter, and reduce the impact on various components.

[0024] When the membrane shell is depressurized, the membrane element rebounds and stretches, pushing the adapter to move toward the clean water outlet. At this time, the water in chamber A leaks out through the small hole B and the flow channel C. Since the flow rate is limited by the size of the small hole and the flow channel, the rebound speed of the membrane element is controlled to avoid rapid rebound and impact on various components, causing damage to the components.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adaptor, characterized in that: The two ends of the adapter are circular tube parts. The diameter of the tube body that the adapter seals with the clean water outlet is smaller than the diameter of the tube body that it seals with the center tube of the membrane shell. The sealing section between the adapter and the center tube of the membrane shell is shorter than the length of the sealing section with the clean water outlet. The step in the middle of the adapter cooperates with the circular tubular skirt at the tail of the clean water outlet to form a water-filled chamber. There are multiple overflow channels on the skirt of the clean water outlet. The overflow channel can be of equal cross-section or variable cross-section, and the side wall close to the clean water outlet has multiple overflow and exhaust holes.

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