Filtering device for breathing tube of demineralized water tank

Abstract

The utility model relates to the technical field of desalted water tanks, in particular to a desalted water tank breathing tube filter device which comprises a first filter cavity and a second filter cavity, the first filter cavity is communicated with the second filter cavity, and a first filter element is detachably mounted in the first filter cavity. A first connecting pipe communicated with the interior of the first filter cavity is installed on one side of the first filter cavity, a second filter element is detachably installed in the second filter cavity, a sealing baffle is movably arranged in the first filter cavity, and when the first filter element is fixed, the sealing baffle is connected to the bottom end of the first filter cavity in a pressed mode; the sealing baffle is located below the first connecting pipe, an elastic supporting piece is arranged between the sealing baffle and the second filter element, when the first filter element is blocked, the first filter element can be taken down to be cleaned or replaced, the elastic supporting piece automatically pushes the sealing baffle to move upwards, standby filtering is conducted through the second filter element, and operation of equipment is not affected; and the pollution of desalted water is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of desalted water tanks, in particular to a desalted water tank breathing tube filtering device. Background Art

[0002] In a thermal power plant, the desalted water tank is the water production equipment for the chemical desalted water of the power plant. The desalted water tank exchanges air with the outside world through a breathing tube. There is a lot of dust and other impurities in the air, which may cause secondary pollution to the desalted water in the desalted water tank, resulting in the conductivity of the desalted water exceeding 50%.

[0003] In the Chinese Patent Literature Library, patent application number 202323481474.6 discloses a desalting water tank breathing tube filter device. By setting a telescopic component on the filter component, pulling the telescopic component can drive the filter component to vibrate up and down to shake off dust. However, during actual use, the dust shaken off may also enter the desalting water tank and cause contamination of the desalting water. Summary of the Invention

[0004] The purpose of the utility model is to provide a desalted water tank breathing tube filter device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a desalted water tank breathing tube filter device, comprising a first filter chamber and a second filter chamber arranged at the bottom end of the first filter chamber, the first filter chamber and the second filter chamber are internally connected, a first filter element is detachably installed inside the first filter chamber, and a first connecting pipe connected to the first filter chamber is installed on one side of the first filter chamber, a second filter element is detachably installed inside the second filter chamber, a sealing baffle is movably provided inside the first filter chamber, when the first filter element is fixed, the sealing baffle is pressed against the bottom end of the first filter chamber, and the sealing baffle is located below the first connecting pipe, an elastic support member is provided between the sealing baffle and the second filter element, and the elastic support member is used to push the sealing baffle to move upward.

[0006] Furthermore, a first end cap is detachably mounted on the top end of the first filter chamber, and a second connection port communicating with the interior of the first filter element is provided on the first end cap; a second end cap is detachably mounted on the bottom end of the second filter chamber, and a third connection port communicating with the interior of the second filter element is provided on the second end cap.

[0007] Furthermore, the third connecting port is connected to a sealing cover.

[0008] Furthermore, flange rings for limiting and fixing are provided at an edge of the first filter element close to one end of the first end cover and at an edge of the second filter element close to one end of the second end cover.

[0009] Furthermore, a support portion for limiting the elastic support member is provided at the edge of the second filter element near one end of the elastic support member, the edge of the support portion abuts against the inner wall of the second filter cavity, and a plurality of ventilation holes are provided at the edge of the support portion.

[0010] Furthermore, the outer periphery of the sealing baffle abuts against the inner wall of the first filter cavity, dividing the first filter cavity into two upper and lower independent chambers, and a sealing ring is provided on the outer periphery of the sealing baffle.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the desalted water tank breathing tube filter device is provided with a first filter chamber, a second filter chamber, a first filter element and a second filter element, and a sealing baffle and an elastic support member are provided inside the first filter chamber and the second filter chamber. When the first filter element is blocked, it can be removed for cleaning or replacement, and the elastic support member automatically pushes the sealing baffle up, and the second filter element is used for standby filtering, which does not affect the operation of the equipment and reduces the contamination of the desalted water. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 3 This is an explosion diagram of the utility model.

[0015] In the figure: 1. First filter chamber; 101. First connecting pipe; 2. Second filter chamber; 3. First filter element; 4. First end cover; 401. Second connecting port; 5. Sealing baffle; 6. Second filter element; 601. Support portion; 7. Second end cover; 701. Third connecting port; 8. Elastic support member; 9. Flange ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. In the description of the present invention, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" can explicitly or implicitly include at least one of the features. For the purpose of the description and claims of the present invention and the above-mentioned drawings, the terms "including" and any variations thereof are intended to cover non-exclusive inclusions.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0018] See also Figure 1-3 The utility model provides an embodiment: a desalted water tank breathing tube filter device, comprising a first filter chamber 1 and a second filter chamber 2 arranged at the bottom end of the first filter chamber 1, the first filter chamber 1 and the second filter chamber 2 are internally connected. In this embodiment, the first filter chamber 1 and the second filter chamber 2 are coaxially arranged cylindrical structures, and the size of the first filter chamber 1 is larger than that of the second filter chamber 2, reducing equipment investment. A first filter element 3 is detachably installed inside the first filter chamber 1, and the first filter element 3 is also a cylindrical structure. The filter layer is specifically the existing technology and will not be described in detail here. After being inserted into the first filter chamber 1, the first filter chamber 1 is divided into two independent chambers inside and outside. A first connecting pipe 101 communicating with the first filter chamber 1 is installed on one side of the first filter chamber 1. The first connecting pipe 101 is connected to the desalted water tank. A second filter element 6 is detachably installed inside the second filter chamber 2, and the second filter element 6 is also a cylindrical structure. The filter layer is specifically the existing technology and will not be described in detail here. After being inserted into the second filter chamber 2, the second filter chamber 2 is divided into two independent chambers inside and outside. Specifically, the first filter A first end cap 4 is removably mounted on the top of the filter chamber 1, and is provided with a second connection port 401 that communicates with the interior of the first filter element 3. The first end cap 4 and the edge of the top of the first filter chamber 1 are removably connected by bolts. A second end cap 7 is removably mounted on the bottom of the second filter chamber 2, and is provided with a third connection port 701 that communicates with the interior of the second filter element 6. The second end cap 7 and the edge of the bottom of the second filter chamber 2 are removably connected by bolts. During operation, the first filter element 3 performs a filtering function, and the second filter element 6 is used as a backup when the first filter element 3 is cleaned or replaced, preventing contamination of the desalted water during cleaning or replacement of the first filter element 3. A sealing cap is connected to the third connection port 701, which can be sealed during normal operation.

[0019] In this embodiment, flange rings 9 for limiting and fixing are provided at the edge of the first filter element 3 near the first end cover 4 and at the edge of the second filter element 6 near the second end cover 7. The two flange rings 9 are respectively penetrated by through holes that are compatible with the first end cover 4 and the second end cover 7. They are fixed by bolts, so that the first filter element 3 and the second filter element 6 can be fixed synchronously.

[0020] A sealing baffle 5 is movably provided inside the first filter cavity 1 , and the outer periphery of the sealing baffle 5 abuts against the inner wall of the first filter cavity 1 , dividing the first filter cavity 1 into two independent upper and lower chambers, and a sealing ring is provided on the outer periphery of the sealing baffle 5 . When the first filter element 3 is fixed, the sealing baffle 5 is pressed against the bottom end of the first filter chamber 1, and the sealing baffle 5 is located below the first connecting tube 101. An elastic support member 8 is provided between the sealing baffle 5 and the second filter element 6, and the elastic support member 8 is used to push the sealing baffle 5 to move upward. The elastic support member 8 can be specifically a spring. In this embodiment, there is only one spring, and multiple springs can be provided as needed. Its top end abuts against the sealing baffle 5, and its bottom end abuts against the second filter element 6. During normal operation, the first filter element 3 presses the sealing baffle 5 against the bottom end of the first filter chamber 1, so that the first connecting tube 101 is connected with the upper chamber inside the first filter chamber 1, and the first filter element 3 performs filtering. When the first filter element 3 is taken out, the elastic support member 8 pushes the sealing baffle 5 to move up to the top of the first connecting tube 101. The first connecting tube 101 is connected with the lower chamber inside the first filter chamber 1, and then connected with the interior of the second filter chamber 2. At this time, the second filter element 6 plays a filtering role.

[0021] In this embodiment, a support portion 601 for limiting the elastic support member 8 is provided at the edge of the second filter element 6 near one end of the elastic support member 8. The edge of the support portion 601 abuts against the inner wall of the second filter cavity 2, and a plurality of ventilation holes are provided at the edge of the support portion 601 to prevent the elastic support member 8 from being displaced.

[0022] Working principle: During operation, the first filter element 3 is installed inside the first filter chamber 1, and the bottom end of the first filter element 3 is pressed against the top end of the sealing baffle 5, so that the sealing baffle 5 is located above the first connecting tube 101, so that the external air is connected to the inside of the first filter chamber 1, and the first connecting tube 101 is connected to the desalted water tank. While exchanging air with the outside, the first filter element 3 plays a filtering role. When the first filter element 3 is blocked, the first end cover 4 can be removed to remove the first filter element 3 for cleaning or replacement. At this time, the elastic support member 8 automatically pushes the sealing baffle 5 upward, so that the first connecting tube 101 is located below the sealing baffle 5, so that the first connecting tube 101 can be connected to the inside of the second filter chamber 2, and the second filter element 6 can play a backup filtering role.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. Desalted water tank breathing tube filter device, characterized by: The invention comprises a first filter chamber (1) and a second filter chamber (2) arranged at the bottom end of the first filter chamber (1), wherein the first filter chamber (1) and the second filter chamber (2) are internally connected, a first filter element (3) is detachably installed in the first filter chamber (1), and a first connecting pipe (101) communicating with the interior of the first filter chamber (1) is installed on one side of the first filter chamber (1), a second filter element (6) is detachably installed in the second filter chamber (2), a sealing baffle (5) is movably arranged in the first filter chamber (1), when the first filter element (3) is fixed, the sealing baffle (5) is pressed against the bottom end of the first filter chamber (1), and the sealing baffle (5) is located below the first connecting pipe (101), an elastic support member (8) is arranged between the sealing baffle (5) and the second filter element (6), and the elastic support member (8) is used to push the sealing baffle (5) to move upward.

2. The desalted water tank breathing tube filter device according to claim 1, characterized in that: A first end cap (4) is detachably mounted on the top end of the first filter chamber (1), and a second connection port (401) communicating with the interior of the first filter element (3) is provided on the first end cap (4). A second end cap (7) is detachably mounted on the bottom end of the second filter chamber (2), and a third connection port (701) communicating with the interior of the second filter element (6) is provided on the second end cap (7).

3. The desalted water tank breathing tube filter device according to claim 2, characterized in that: The third connection port (701) is connected to a sealing cover.

4. The desalted water tank breathing tube filter device according to claim 1, characterized in that: A flange ring (9) for limiting and fixing is provided at the edge of the first filter element (3) close to the first end cover (4) and at the edge of the second filter element (6) close to the second end cover (7).

5. The desalted water tank breathing tube filter device according to claim 1, characterized in that: A support portion (601) for limiting the elastic support member (8) is provided at an edge of the second filter element (6) close to one end of the elastic support member (8); the edge of the support portion (601) abuts against the inner wall of the second filter cavity (2), and a plurality of ventilation openings are provided at the edge of the support portion (601).

6. The desalted water tank breathing tube filter device according to claim 1, characterized in that: The outer periphery of the sealing baffle (5) abuts against the inner wall of the first filter cavity (1), dividing the first filter cavity (1) into two upper and lower independent chambers, and a sealing ring is provided on the outer periphery of the sealing baffle (5).

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