Scale inhibitor

Abstract

The utility model discloses a scale inhibitor which is characterized in that a first water passing piece is provided with a first water passage; the first water passing piece is provided with a first water passage and a second water passage, the second water passing piece is provided with a second water passage and a third water passage, a scale inhibition material is arranged in the second water passage, the first water passing piece is connected with the second water passing piece, and two water passing states are formed between the first water passing piece and the second water passing piece and are that the first water passage is communicated with the second water passage and the first water passage is communicated with the third water passage; the switching structure is used for controlling switching of the two water passing states; the double-channel structure of the second water passing piece is matched with the first water passing piece to achieve switching use of two water passing states, use of scale inhibition materials is reduced when scale inhibition water is not needed, the use cost is effectively reduced, the overall structure is simple, and use is convenient.

Description

Technical Field

[0001] The utility model relates to water treatment equipment, in particular to a scale inhibitor. Background Art

[0002] Household water-related electrical appliances, such as washing machines, water heaters, dishwashers, showers, water purifiers, etc., will produce scale during use. Scale will affect the use of the equipment, and it is easy to breed bacteria, affecting the health of water use, and will also cause under-scale corrosion. At present, the main way to solve the above problems is to add descaling agents, disperse the insoluble inorganic salts in the water through scale inhibitors, and prevent or interfere with the deposition and scaling of insoluble inorganic salts in biological filters and pipeline systems. Scale inhibitors cannot be recycled, and the descaling efficiency needs to be improved. In order to completely remove the insoluble inorganic salts in sewage, a large amount of scale inhibitors are required, which will significantly increase the cost of sewage treatment. Utility Model Content

[0003] The utility model aims to solve one of the above-mentioned technical problems in the related art at least to a certain extent. To this end, the utility model provides a scale inhibitor.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The scale inhibitor according to the first embodiment of the utility model comprises:

[0006] A first water flow member, wherein the first water flow member is provided with a first water passage;

[0007] a second water passage, wherein the second water passage is provided with a second water passage and a third water passage, wherein the second water passage has a built-in scale-inhibiting material, wherein the first water passage is connected to the second water passage and there are two water-flowing states between the first water passage and the second water passage, and wherein the first water passage is connected to the third water passage;

[0008] The switching structure is used to control the switching between the two water flow states.

[0009] The scale inhibitor according to the embodiment of the utility model has at least the following beneficial effects: the dual-channel structure of the second water pass part is utilized in cooperation with the first water pass part to realize the switching of two water flow states, and the use of scale inhibition materials is reduced when no scale inhibition water is needed, thereby effectively reducing the use cost, and the overall structure is simple and easy to use.

[0010] According to some embodiments of the utility model, the first water transfer member is provided with a first cavity, the first cavity is provided with a first water inlet and a first water outlet, and the first water inlet, the first water outlet and the first cavity constitute the first water passage;

[0011] The second water flow member is installed in the first cavity, and the switching structure drives the second water flow member to move in the first cavity to switch the second water passage or the third water passage to communicate with the first water inlet and the first water outlet.

[0012] According to some embodiments of the utility model, the first cavity is a cylindrical cavity, the outer contour of the second water flow part is cylindrical and coaxially rotates with the first cavity, and the switching structure controls the second water flow part to rotate coaxially relative to the first water flow part in the first cavity to switch between the two water flow states.

[0013] According to some embodiments of the present utility model, the first water inlet and the first water outlet are provided on the circumferential side wall of the first cavity;

[0014] The interior of the second water-passing member is divided into a second cavity and a third cavity, and the circumferential side wall of the second water-passing member is provided with a second water inlet, a second water outlet, a third water inlet and a third water outlet; the second water inlet and the second water outlet are connected with the second cavity to form the second water passage; the third water inlet and the third water outlet are connected with the third cavity to form the third water passage; when the second water-passing member rotates relative to the first water-passing member, one of the water-flowing states is that the second water inlet is aligned with the first water inlet, and the second water outlet is aligned with the first water outlet; the other water-flowing state is that the third water inlet is aligned with the first water inlet, and the third water outlet is aligned with the first water outlet.

[0015] According to some embodiments of the present invention, the switching structure includes a rotating shaft, which is arranged on the axial end of the second water-flowing member, the rotating shaft coaxially passes through the outside of the first water-flowing member, and the rotating shaft and the first water-flowing member are sealed and rotatably connected.

[0016] According to some embodiments of the present invention, the switching structure further includes a motor, the motor is connected to the rotating shaft, and the motor drives the second water flow member to rotate via the rotating shaft.

[0017] According to some embodiments of the utility model, a limit groove is provided on the cavity wall of the first cavity, and the limit groove extends around the central axis of the first cavity. A protrusion is provided on the second water-passing member, and the protrusion is slidably connected in the limit groove. The limit groove and the protrusion cooperate to limit the rotation stroke of the second water-passing member, and the two extreme positions of the rotation stroke respectively position the two water-flowing states.

[0018] According to some embodiments of the present invention, a protrusion is provided on the circumferential outer wall of the second water flow member, and the protrusion extends along the circumference of the second water flow member, and the protrusion abuts against the inner wall of the first cavity.

[0019] According to some embodiments of the utility model, an end cover is further included, the first cavity, the second cavity and the third cavity have the same axial orientation, the same-side axial ends of the first cavity, the second cavity and the third cavity are openings, the end cover is connected to the first water transfer member, and seals the openings of the first cavity, the second cavity and the third cavity.

[0020] According to some embodiments of the utility model, the end cover is provided with a convex edge that matches the shape of the opening of the second cavity and the opening of the third cavity, and the convex edge abuts against the corresponding openings of the second cavity and the third cavity.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of one embodiment of a scale inhibitor;

[0024] Figure 2 yes Figure 1 Schematic diagram of structural decomposition;

[0025] Figure 3 yes Figure 1 A schematic diagram of the structure of the second water passing member;

[0026] Figure 4 is a schematic diagram of the interior of another embodiment of an antiscalant;

[0027] Figure 5 is a schematic diagram of the first water passage being connected to the second water passage;

[0028] Figure 6 is a schematic diagram showing that the first water passage and the third water passage are connected;

[0029] Figure 7 It is a structural schematic diagram of the first water passing part;

[0030] Figure 8 yes Figure 3 Schematic diagram from another perspective;

[0031] Fig. 9 yes Figure 7 Schematic diagram from another perspective.

[0032] Reference numerals:

[0033] First water passage 100; first water passage 101; first cavity 110; first water inlet 120; first water outlet 130; limiting groove 140;

[0034] Second water passage 200; second water passage 201; third water passage 202; second chamber 210; second water inlet 211; second water outlet 212; third chamber 220; third water inlet 221; third water outlet 222; protrusion 230; protrusion 240;

[0035] Antiscaling material 300;

[0036] Rotating shaft 410; Motor 420;

[0037] End cover 500; flange 510. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The utility model relates to a scale inhibitor, comprising a first water flow component 100, a second water flow component 200 and a switching structure.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the first water flow member 100 is provided with a first water passage 101. The second water flow member 200 is provided with a second water passage 201 and a third water passage 202. Figure 5 As shown, the second water passage 201 is filled with a scale-inhibiting material 300, which may be a granular scale-inhibiting agent. The scale-inhibiting agent may be directly or loaded into a net bag and placed in the second water passage 201. The first water passage 100 is connected to the second water passage 200, and there are two water-passing states between the first water passage 100 and the second water passage 200. One of the water-passing states is, Figure 2 , Figure 3 and Figure 4 As shown, the first water passage 101 is connected to the second water passage 201, and the third water passage 202 is independently in an idle state. Figure 2 , Figure 3 and Figure 5As shown, the first water passage 101 and the third water passage 202 are connected, and the second water passage 201 is independently in an idle state. The switching structure is used to switch the first water passage 100 and the second water passage 200 between two water flow states. Among them, the connection and switching structure between the first water passage 101, the second water passage 201 and the third water passage 202 can be but not limited to the coordinated use of water pipes and valves. The second water passage 201 and the third water passage 202 are respectively connected to the first water passage 101 through different water pipes, and valves are installed on their respective water pipes. The switching of the two water flow states is achieved by controlling the opening and closing of each valve in turn. As shown Figure 2 and Figure 4 As shown, the first water passage 100 and the second water passage 200 can also be flexibly connected, and by changing the position between the first water passage 100 and the second water passage 200, the second water passage 201 and the third water passage 202 are alternately aligned with the first water passage 101, so as to switch between the two water flow states. The scale inhibitor can be applied to various water-using equipment. In actual use, an external water source such as tap water is connected to the first water passage 101, and the second water passage 201 and the third water passage 202 are respectively connected to the water path of the water-using equipment. When the water path needs to be descaled, the switching structure is used to switch to the water flow state in which the first water passage 101 and the second water passage 201 are connected, and the tap water flows through the first water passage 101 and the second water passage 201 in sequence and then enters the water-using equipment. When the water flows through the second water passage 201, it will contact the scale-inhibiting material 300 in the second water passage 201, and the tap water will be scale-inhibited and the water quality will be improved. Then the water will enter the water-using equipment through the second water passage 201 for use. When scale prevention treatment is not required, the switching structure is used to switch to the water flow state in which the first water passage 101 and the third water passage 202 are connected, and the tap water flows through the first water passage 101 and the third water passage 202 in sequence and then enters the water-using equipment for direct use. The dual-channel structure of the second water flow member 200 is used in conjunction with the first water flow member 100 to achieve the switching of the two water flow states, and the use of the scale prevention material 300 is reduced when scale prevention water is not required, which effectively reduces the use cost, and the overall structure is simple and easy to use.

[0041] In some embodiments of the present invention, Figure 2As shown, the first water flow member 100 is provided with a first cavity 110, and the first cavity 110 is provided with a first water inlet 120 and a first water outlet 130. The first water inlet 120 and the first water outlet 130 connect the inside and the outside of the first cavity 110. The first water inlet 120, the first water outlet 130 and the first cavity 110 constitute the above-mentioned first water passage 101. Among them, the first water inlet 120 and the first water outlet 130 can extend from the outer wall of the first water flow member 100 in a columnar shape. The second water flow member 200 is installed in the first cavity 110. The switching structure can drive the second water flow member 200 to move in the first cavity 110. The movement of the second water flow member 200 relative to the first water flow member 100 can be translation or rotation, etc. For example, as Figure 4 As shown, the switching structure may be a push rod provided on the second water flow member 200, and the push rod is used to push the second water flow member 200 to translate in the first chamber 110, so as to align the second water passage 201 with the first water inlet 120 and the first water outlet 130, or align the third water passage 202 with the first water inlet 120 and the first water outlet 130. The second water flow member 200 is integrated and installed in the first water flow member 100, so as to reduce the overall volume of the scale inhibitor and reduce the space occupied.

[0042] In some embodiments of the present invention, the second water flow member 200 is rotatably connected to the first water flow member 100. Figure 2 and Figure 3 As shown, the first cavity 110 is a cylindrical cavity. The outer contour of the second water passage 200 is cylindrical. The second water passage 200 is coaxially connected with the first cavity 110 for rotation. Through the rotation of the second water passage 200, the second water passage 200 is switched between two water flow states relative to the first water passage 100. The first water inlet 120 and the first water outlet 130 can be arranged on the circumferential side wall or end of the first water passage 100, and correspondingly, the second water passage 201 and the third water passage 202 are connected with the first water inlet 120 and the first water outlet 130 from their respective side walls or end positions.

[0043] Specifically, Figure 1 and Figure 2 As shown, the first water inlet 120 and the first water outlet 130 are provided on the circumferential side wall of the first chamber 110. Figure 3As shown, a second cavity 210 and a third cavity 220 are provided inside the second water flow member 200. The space sizes of the second cavity 210 and the third cavity 220 can be set to be the same or different, and are designed according to actual product needs. A second water inlet 211, a second water outlet 212, a third water inlet 221 and a third water outlet 222 are provided on the circumferential side wall of the second water flow member 200. The second water inlet 211 and the second water outlet 212 are connected to the second cavity 210, and the second water inlet 211, the second water outlet 212 and the second cavity 210 constitute the above-mentioned second water passage 201. The scale-inhibiting material 300 is placed in the second cavity 210. The third water inlet 221 and the third water outlet 222 are connected to the third cavity 220, and the third water inlet 221, the third water outlet 222 and the third cavity 220 constitute the above-mentioned third water passage 202. When the second water flow member 200 rotates relative to the first water flow member 100, one of the water flow states is, as shown in FIG. Figure 5 As shown, the second water inlet 211 is aligned with the first water inlet 120, and the second water outlet 212 is aligned with the first water outlet 130. The tap water enters the water-using device through the first water inlet 120, the second water inlet 211, the second cavity 210, the second water outlet 212, and the first water outlet 130 in sequence. At this time, the inner wall of the first cavity 110 is used to block the third water inlet 221 and the third water outlet 222. The second water-passing member 200 rotates relative to the first water-passing member 100 to another water-passing state, as shown in FIG. Figure 6 As shown, the third water inlet 221 is aligned with the first water inlet 120, and the third water outlet 222 is aligned with the first water outlet 130. Tap water enters the water-using device through the first water inlet 120, the third water inlet 221, the third cavity 220, the third water outlet 222, and the first water outlet 130 in sequence. At this time, the second water inlet 211 and the second water outlet 212 are blocked by the inner wall of the first cavity 110. In order to improve the water-tightness of each water inlet when it is aligned, a sealing ring can be set on the side of the first water inlet 120 and the second water inlet 211 close to the second water flow part 200, or a sealing ring can be set on the side of the second water inlet 211, the second water outlet 212, the third water inlet 221 and the third water outlet 222 facing the first water flow part 100, so that the docking position of the first water inlet 120 and the second water inlet 211 or the third water inlet 221, and the docking position of the first water outlet 130 and the second water outlet 212 or the third water outlet 222 are sealed.

[0044] In some embodiments of the present invention, Figure 2 , Figure 5 and Figure 8As shown, on the basis of the structure of the rotational connection between the first water flow member 100 and the second water flow member 200, the switching structure includes a rotating shaft 410. The rotating shaft 410 is arranged on the axial end of the second water flow member 200. The rotating shaft 410 coaxially passes through the outside of the first water flow member 100, and the rotating shaft 410 and the first water flow member 100 can be sealed and rotatably connected by means of a Y-shaped sealing ring, etc., to prevent water from flowing from the rotating shaft 410 to the outside of the first water flow member 100. When it is necessary to switch the water flow state, the rotating shaft 410 can be rotated to drive the second water flow member 200 to rotate relative to the first water flow member 100.

[0045] The rotating shaft 410 can be operated manually or electrically. When the manual method is adopted, a handle can be used outside the first water-passing member 100 to connect with the rotating shaft 410, and the rotating shaft 410 can be controlled to rotate by the handle. Figure 1 , Figure 2 and Figure 5 As shown, when the electric mode is adopted, the switching structure further includes a motor 420. The driving shaft of the motor 420 is connected to the rotating shaft 410. The rotating shaft 410 is driven to rotate by the motor 420, thereby driving the second water-flowing member 200 to rotate. Among them, the motor 420 can be selected from models such as a forward and reverse motor 420.

[0046] Further, such as Figure 7 As shown, a limiting groove 140 is provided on the cavity wall of the first cavity 110. The limiting groove 140 can be provided on the circumferential cavity wall or the end cavity wall of the first cavity 110. The limiting groove 140 extends around the central axis of the first cavity 110 and is in an arc shape. Figure 8As shown, the second water-passing member 200 is provided with a protrusion 230, which is slidably connected to the limiting groove 140. When the second water-passing member 200 rotates relative to the first water-passing member 100, the protrusion 230 slides along the limiting groove 140, and the cooperation between the limiting groove 140 and the protrusion 230 plays a certain role in guiding the rotation. In addition, the limiting groove 140 and the protrusion 230 cooperate to limit the rotation stroke of the second water-passing member 200. That is, when the second water-passing member 200 rotates forward or reverse (clockwise or counterclockwise) relative to the first water-passing member 100, the protrusion 230 will slide and abut against the end of the limiting groove 140, thereby limiting the second water-passing member 200 from rotating in the current direction. Among them, the extreme positions at both ends of the limiting groove 140 respectively position the two water-flowing states. That is, when the protrusion 230 rotates forward with the second water flow member 200 to abut against one end of the limiting groove 140, the second water flow member 200 switches relative to the first water flow member 100 so that the first water inlet 120 is aligned with the second water inlet 211, and the first water outlet 130 is aligned with the second water outlet 212. When the protrusion 230 rotates reversely with the second water flow member 200 to abut against the other end of the limiting groove 140, the second water flow member 200 switches relative to the first water flow member 100 so that the first water inlet 120 is aligned with the third water inlet 221, and the first water outlet 130 is aligned with the third water outlet 222.

[0047] In some embodiments of the present invention, Figure 8 As shown, a protrusion 240 is provided on the circumferential outer wall of the second water flow member 200, and the protrusion 240 extends along the circumference of the second water flow member 200. The protrusion 240 abuts against the inner wall of the first cavity 110. The other parts of the second water flow member 200 except the protrusion 240 do not directly contact the inner wall of the first cavity 110, thereby reducing the friction force when the second water flow member 200 rotates.

[0048] In some embodiments of the present invention, Figure 1 and Figure 5 As shown, an end cover 500 is also included. The first chamber 110, the second chamber 210 and the third chamber 220 have the same axial orientation. The opening of the first chamber 110 surrounds the opening of the second chamber 210 and the opening of the third chamber 220. The axial ends on the same side of the first chamber 110, the second chamber 210 and the third chamber 220 are openings. The end cover 500 can be connected to the first water flow part 100 by snap-fitting or the like. The end cover 500 seals the openings of the first chamber 110, the second chamber 210 and the third chamber 220. The end cover 500 can be removed, and the first chamber 110, the second chamber 210 and the third chamber 220 can be cleaned, and anti-scaling material 300 can be added. A sealing ring can be set between the end cover 500 and the opening of the first chamber 110 for sealing. Further, as Fig. 9As shown, the end cover 500 is provided with a convex edge 510 that matches the shape of the opening of the second cavity 210 and the opening of the third cavity 220. The convex edge 510 abuts against the corresponding openings of the second cavity 210 and the third cavity 220, and further independently seals the openings of the second cavity 210 and the third cavity 220, thereby preventing water from leaking from the second cavity 210 and the third cavity 220 at the end cover 500. The end cover 500 can also be sealed and fixed by welding, gluing, etc.

[0049] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] In the description of this specification, the description of reference terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A scale inhibitor, characterized in that: include: A first water flow member (100), wherein the first water flow member (100) is provided with a first water passage (101); a second water passage (200), the second water passage (200) being provided with a second water passage (201) and a third water passage (202), the second water passage (201) being provided with a scale-inhibiting material (300), the first water passage (100) being connected to the second water passage (200) and having two water-flowing states therebetween, the two water-flowing states being that the first water passage (101) is connected to the second water passage (201), and the first water passage (101) is connected to the third water passage (202); The switching structure is used to control the switching between the two water flow states.

2. The scale inhibitor according to claim 1, characterized in that: The first water transfer member (100) is provided with a first cavity (110), the first cavity (110) is provided with a first water inlet (120) and a first water outlet (130), and the first water inlet (120), the first water outlet (130) and the first cavity (110) constitute the first water passage (101); The second water passage (200) is installed in the first chamber (110), and the switching structure drives the second water passage (200) to move in the first chamber (110) to switch the second water passage (201) or the third water passage (202) to communicate with the first water inlet (120) and the first water outlet (130).

3. The scale inhibitor according to claim 2, characterized in that: The first cavity (110) is a cylindrical cavity, the outer contour of the second water passing member (200) is cylindrical and coaxially rotates with the first cavity (110), and the switching structure controls the second water passing member (200) to rotate coaxially relative to the first water passing member (100) in the first cavity (110) to switch between the two water flow states.

4. The scale inhibitor according to claim 3, characterized in that: The first water inlet (120) and the first water outlet (130) are provided on the circumferential side wall of the first cavity (110); The second water passage member (200) is provided with a second chamber (210) and a third chamber (220) therein; a second water inlet (211), a second water outlet (212), a third water inlet (221) and a third water outlet (222) are provided on the circumferential side wall of the second water passage member (200); the second water inlet (211) and the second water outlet (212) are communicated with the second chamber (210) to form the second water passage (201); the third water inlet (221) and the third water outlet (222) are communicated with the third chamber (210) to form the second water passage (201); 220) to form the third water passage (202); when the second water passing member (200) rotates relative to the first water passing member (100), one of the water passing states is that the second water inlet (211) is aligned with the first water inlet (120), and the second water outlet (212) is aligned with the first water outlet (130); and the other water passing state is that the third water inlet (221) is aligned with the first water inlet (120), and the third water outlet (222) is aligned with the first water outlet (130).

5. The scale inhibitor according to claim 3 or 4, characterized in that: The switching structure comprises a rotating shaft (410), wherein the rotating shaft (410) is arranged on the shaft end of the second water-flowing member (200), the rotating shaft (410) coaxially passes through the outside of the first water-flowing member (100), and the rotating shaft (410) and the first water-flowing member (100) are in sealed rotational connection.

6. The scale inhibitor according to claim 5, characterized in that: The switching structure further comprises a motor (420), wherein the motor (420) is connected to the rotating shaft (410), and the motor (420) drives the second water transfer member (200) to rotate via the rotating shaft (410).

7. The scale inhibitor according to claim 3 or 4, characterized in that: A limiting groove (140) is provided on the cavity wall of the first cavity (110), the limiting groove (140) extending around the central axis of the first cavity (110), a protrusion (230) is provided on the second water-passing member (200), the protrusion (230) is slidably connected in the limiting groove (140), the limiting groove (140) and the protrusion (230) cooperate to limit the rotation stroke of the second water-passing member (200), and the two extreme positions of the rotation stroke respectively position the two water-passing states.

8. The scale inhibitor according to claim 3 or 4, characterized in that: A protrusion (240) is provided on the circumferential outer wall of the second water flow member (200), the protrusion (240) extends along the circumference of the second water flow member (200), and the protrusion (240) abuts against the inner wall of the first cavity (110).

9. The scale inhibitor according to claim 4, characterized in that: The invention also comprises an end cover (500); the first chamber (110), the second chamber (210) and the third chamber (220) have the same axial orientation; the first chamber (110), the second chamber (210) and the third chamber (220) have axial ends on the same side thereof which are openings; the end cover (500) is connected to the first water flow member (100) and covers the openings of the first chamber (110), the second chamber (210) and the third chamber (220).

10. The scale inhibitor according to claim 9, characterized in that: The end cover (500) is provided with a convex edge (510) that matches the shape of the opening of the second cavity (210) and the opening of the third cavity (220), and the convex edge (510) abuts against the corresponding openings of the second cavity (210) and the third cavity (220).

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