Scale inhibition device

Abstract

The utility model discloses a scale inhibition device which comprises a shell, a rotating shaft and a sliding block, the rotating shaft is rotatably installed in the shell, the sliding block is arranged on the rotating shaft in a sleeved mode, the sliding block drives the rotating shaft to rotate when moving, the sliding block divides the interior of the shell into a first cavity and a second cavity, the scale inhibition device is characterized by further comprising a spring, a first limiting part is arranged on the side, facing the second cavity, of the sliding block, and a second limiting part is arranged on the side, facing the second cavity, of the sliding block. A limiting groove is defined between the first limiting part and the circumferential side wall of the rotating shaft, the shaft section, located in the second cavity, of the rotating shaft is sleeved with the spring, one end of the spring extends into the limiting groove and abuts against the sliding block, and the other end of the spring abuts against the cavity wall of the second cavity; the circumferential stress balance of the sliding block can be kept to a great extent, the inclination degree of the sliding block is reduced, and the sliding block is prevented from being blocked due to overlarge inclination; and the spring can be correspondingly selected with a model with a smaller elastic force value parameter, so that the opposite force of the spring is smaller when the rotating shaft and the sliding block are mounted, and more labor is saved during mounting.

Description

TECHNICAL FIELD

[0001] The utility model relates to water equipment technical field, especially a kind of scale inhibition device. BACKGROUND

[0002] In order to prevent scale from affecting the use performance of the product, some existing faucet products increase scale inhibition devices in the product, and the commonly used scale inhibition device is a slow-release scale inhibitor added inside, and users often do not know when to replenish the scale inhibitor. The existing scale inhibition device with prompting function can prompt the user when the scale inhibitor is consumed. As disclosed in Chinese patent 202410579168.6, a scale inhibition device and a water using equipment, it is found during use that since many scale inhibitors are in granular form, their distribution is likely to be uneven after filling, and the degree of dissolution of the scale inhibitor during use is also different, which can also cause uneven distribution. Since the spring in the prior art has a large outer diameter, the spring force is applied far from the center shaft, and the spring does not have sufficient installation limit, which can cause the spring to twist after installation, making the sliding block unevenly stressed and tilted. As a result, the sliding block is stuck, causing the product to fail. SUMMARY

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

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

[0005] According to the scale inhibition device of the first aspect of the utility model, the scale inhibition device comprises a shell, a shaft and a sliding block, the shaft is rotatably installed in the shell, the sliding block is sleeved on the shaft, the sliding block drives the shaft to rotate when moving, and the sliding block divides the inner part of the shell into a first cavity and a second cavity. The utility model is characterized in that: a spring is further included, a first limiting portion is arranged on the side of the sliding block facing the second cavity, a limiting groove is defined between the first limiting portion and the circumferential side wall of the shaft, the spring is sleeved on the shaft segment of the second cavity, one end of the spring extends into the limiting groove and abuts against the sliding block, and the other end of the spring abuts against the cavity wall of the second cavity.

[0006] According to the scale inhibition device of the utility model, the sliding block can be kept balanced in the circumferential direction to a great extent, the degree of tilting of the sliding block is reduced, and the sliding block is prevented from being stuck due to excessive tilting. The spring can be selected in a smaller force value parameter, so that the reverse force of the spring is smaller when the shaft and the sliding block are installed, and the installation is more labor-saving.

[0007] According to some embodiments of the present application, the first limiting part extends from one side of the slider in a circular ring shape and is sleeved on the spring.

[0008] According to some embodiments of the present application, the second limiting part extends from the cavity wall of the second cavity away from the first cavity in a circular ring shape, the first limiting part and the second limiting part are coaxially arranged, and the second limiting part is sleeved on the spring.

[0009] According to some embodiments of the present application, the first limiting part and the second limiting part have the same inner diameter, and a plurality of circumferentially arranged gaps are arranged on the first limiting part and / or the second limiting part.

[0010] According to some embodiments of the present application, the shaft is provided with a first sliding groove which spirally extends on the circumferential side wall of the shaft axis, and the slider is provided with a first sliding convex which is spherical.

[0011] One of the inner wall of the shell and the slider is provided with a second sliding groove, and the other is provided with a second sliding convex which is slidably connected to the second sliding groove, so that the slider can translate along the axial direction of the shaft relative to the shell.

[0012] According to some embodiments of the present application, the lead of the first sliding groove is D, which satisfies D≥90mm, and the maximum length of the first cavity along the axial direction of the shaft is L, which satisfies 30mm≤L≤90mm.

[0013] According to some embodiments of the present application, the shell comprises an outer cylinder and an inner cylinder, the two ends of the outer cylinder are respectively a first end and a second end, the outer cylinder is sleeved outside the inner cylinder, the shaft is rotatably installed in the inner cylinder and penetrates the first end, the end of the inner cylinder close to the second end is provided with a elastic buckle mechanism, and the elastic buckle mechanism can elastically stretch and contract relative to the outer cylinder to clamp or separate the outer cylinder.

[0014] According to some embodiments of the present application, the elastic buckle mechanism comprises a pressing plate, a clamping block and an elastic piece, the pressing plate is installed on the inner cylinder, the pressing plate is provided with a guide groove, the clamping block is slidably connected to the guide groove, the elastic piece comprises a connecting part and a spring part, the connecting part is sleeved on the inner cylinder, and the spring part abuts on the clamping block to exert an elastic force on the clamping block to make it stretch outwards along the radial direction of the shaft.

[0015] According to some embodiments of the utility model, still include gland, the gland can axial movement relative to the pivot, be equipped with first guide portion on the gland, be equipped with second guide portion on the clamping block, the first guide portion with the second guide portion between it is relatively slidably abut, and at least one of the abutment place is equipped with inclined plane, the inclined plane is inclined to the pivot's central axis.

[0016] According to some embodiments of the utility model, still include prompt piece and decoration cover, the prompt piece is coaxially installed on the end of pivot, the decoration cover is coaxially relatively rotatablely installed on the prompt piece, the decoration cover with the inner cylinder is relatively fixed, be equipped with visual window for observing the mark on the prompt piece on the decoration cover.

[0017] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the utility model will become apparent and more readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 It is one kind of embodiment internal structure schematic view of scale inhibition device;

[0020] Figure 2 It is the structure schematic view of slider;

[0021] Figure 3 It is the structure schematic view of pivot;

[0022] Figure 4 It is partial structure exploded schematic view of Figure 1 ;

[0023] Figure 5 It is the structure schematic view of inner cylinder;

[0024] Figure 6 It is structure exploded schematic view of elastic buckle mechanism;

[0025] Figure 7 It is another embodiment schematic view of scale inhibition device;

[0026] Figure 8 It is partial structure exploded schematic view of Figure 7 ;

[0027] Figure 9 It is the structure schematic view of decoration cover.

[0028] Label: shell 100; first cavity 101; second cavity 102; water gap 103; mounting port 104; second limiting part 110; second chute 120; outer cylinder 130; first end 131; second end 132; inner cylinder 140; cylindrical wall 141; first rack 142; rotating shaft 200; first sliding groove 210; sliding block 300; first limiting part 310; limiting groove 320; notch 330; first sliding convex 340; second sliding convex 350; spring 400; pressing plate 510; guide groove 511; clamping block 520; second guide part 521; elastic member 530; connecting part 531; elastic piece part 532; gland 600; first guide part 610; inclined surface 611; prompting member 700; decorative cover 800; visual window 810; second rack 820. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0030] The present application relates to a kind of scale inhibition devices, including shell 100, rotating shaft 200 and sliding block 300.

[0031] As Figure 1 , Figure 2 And Figure 3As shown, the shell 100 can be provided as a hollow cylinder. Two ends of the shell 100 are a water inlet 103 and a mounting port 104, respectively. The rotating shaft 200 is placed inside the shell 100, and one end of the rotating shaft 200 is rotatably mounted in the mounting port 104, and a sealing ring can be provided therebetween to improve water tightness. The other end of the rotating shaft 200 penetrates into the water inlet 103. A one-way valve can be installed at the water inlet 103. Water provided by an external water equipment can enter the inside of the shell 100 through the water inlet 103. The slider 300 is sleeved on the rotating shaft 200. The slider 300 divides the inside of the shell 100 into a first cavity 101 and a second cavity 102. A plurality of fine holes can be formed on the slider 300 for water passage. The second cavity 102 is closer to the water inlet 103 than the first cavity 101. The slider 300 can translate relative to the shell 100, and the volumes of the first cavity 101 and the second cavity 102 change when the slider 300 translates. When the slider 300 moves towards the water inlet 103, the first cavity 101 increases and the second cavity 102 decreases. When the slider 300 moves towards the mounting port 104, the second cavity 102 increases and the first cavity 101 decreases. At the same time, when the slider 300 moves, the slider 300 can drive the rotating shaft 200 to rotate. A prompt member 700 is provided outside the shell 100, and the prompt member 700 rotates synchronously with the rotating shaft 200. It can refer to the application number 202410579168.6 disclosed in a kind of scale inhibition device and water equipment.

[0032] The spring 400 is sleeved on the rotating shaft 200, and the inner diameter of the spring 400 is matched with the outer diameter of the rotating shaft 200. The first limiting part 310 is arranged on one side of the slider 300 facing the second cavity 102. After the slider 300 is sleeved on the rotating shaft 200, the first limiting part 310 and the circumferential side wall of the rotating shaft 200 define a limiting groove 320. One end of the spring 400 extends into the limiting groove 320 and abuts against the slider 300, and the other end abuts against the cavity wall of the second cavity 102. The spring 400 applies an elastic force to the slider 300 to move the slider 300 to the installation opening 104. The first cavity 101 is used for storing the scale inhibitor. When the storage amount of the scale inhibitor is maximum, the volume of the first cavity 101 is maximum, and the volume of the second cavity 102 is minimum. The spring 400 is compressed by the slider 300 to the water passage 103. After external water enters the second cavity 102 from the water passage 103, the water flows through the slider 300 and then flows into the first cavity 101 to mix with the scale inhibitor. The water carrying part of the dissolved scale inhibitor flows from the first cavity 101 to the external water equipment through the slider 300, the second cavity 102 and the water passage 103. As the storage amount of the scale inhibitor in the first cavity 101 gradually decreases, under the elastic force of the spring 400, the slider 300 translates to the installation opening 104, and simultaneously drives the rotating shaft 200 to rotate. The inner diameter of the spring 400 is matched with the outer diameter of the rotating shaft 200, and under the action of the limiting groove 320, the spring 400 is prevented from being deflected in the radial direction after installation. The spring force of the spring 400 can be concentrated in the direction of the central axis of the slider 300, so that the circumferential force balance of the slider 300 can be maintained to a great extent, the inclination degree of the slider 300 is reduced, and the slider 300 is prevented from being stuck due to excessive inclination. At the same time, because the spring force of the spring 400 is relatively concentrated, the spring 400 can be selected as a smaller force value parameter model, so that the reverse force of the spring 400 is smaller when the rotating shaft 200 and the slider 300 are installed, and the installation is more labor-saving.

[0033] In an embodiment, as shown in Figure 1 and Figure 2 The first limiting part 310 extends from one side of the slider 300 in a circular ring shape. The first limiting part 310 is sleeved on the spring 400. The inner diameter of the first limiting part 310 can be equal to or slightly larger than the outer diameter of the spring 400 in the compressed state. When one end of the spring 400 extends into the limiting groove 320, the inner wall of the first limiting part 310 limits the radial outward direction of the spring 400.

[0034] Based on the above embodiment, the second limiting portion 110 is arranged on the cavity wall of the second cavity 102. The second limiting portion 110 is arranged on the cavity wall of the second cavity 102 close to the water inlet 103. The second limiting portion 110 is in the shape of a ring. The second limiting portion 110 surrounds the water inlet 103, and the second limiting portion 110 and the first limiting portion 310 are on the same axis. The inner diameter of the second limiting portion 110 is the same as the outer diameter of the spring 400, and the inner diameter of the second limiting portion 110 can be equal to or slightly larger than the outer diameter of the spring 400 in the compressed state. Preferably, the inner diameters of the first limiting portion 310 and the second limiting portion 110 are the same. One end of the spring 400 extends into the first limiting portion 310, and the other end extends into the second limiting portion 110. The first limiting portion 310 moves with the slider 300, and the first limiting portion 310 approaches or moves away from the second limiting portion 110. The first limiting portion 310 and the second limiting portion 110 cooperate to radially limit the spring 400, effectively preventing the spring 400 from being deflected during use. A plurality of circumferentially arranged notches 330 are arranged on the first limiting portion 310 and / or the second limiting portion 110. When the second cavity 102 is reduced to the minimum, the first limiting portion 310 and the second limiting portion 110 can abut. Water enters the space surrounded by the second limiting portion 110 from the water inlet 103, and then flows through the notches 330 to the second cavity 102 outside the first limiting portion 310 and the second limiting portion 110.

[0035] In an embodiment, as shown in Figure 1 、 Figure 2 and Figure 3 , the first sliding groove 210 is arranged on the shaft 200, and the first sliding groove 210 is arranged on the circumferential side wall of the shaft 200. The first sliding groove 210 surrounds the central axis of the shaft 200 and extends spirally. The first sliding convex 340 in the shape of a ball is arranged on the slider 300. After the slider 300 is coaxially sleeved on the shaft 200, the first sliding convex 340 is slidably connected in the first sliding groove 210. The first sliding convex 340 in the shape of a ball reduces the sliding friction between the first sliding convex 340 and the first sliding groove 210. One of the inner wall of the shell 100 and the slider 300 is provided with the second sliding groove 120, and the other is provided with the second sliding convex 350. In this embodiment, the second sliding groove 120 is arranged on the inner wall of the shell 100. The second sliding groove 120 extends linearly along the axial direction of the shaft 200. The second sliding convex 350 is arranged on the outer wall of the slider 300. The second sliding convex 350 is slidably connected in the second sliding groove 120. Under the elastic force of the spring 400, the slider 300 is axially translated relative to the shell 100 through the cooperation of the second sliding groove 120 and the second sliding convex 350, and then the slider 300 drives the shaft 200 to rotate through the cooperation of the first sliding convex 340 and the first sliding groove 210.

[0036] Based on the above embodiment, the lead of the first sliding groove 210 is D, which satisfies D≥90mm. The maximum length of the first cavity 101 along the axial direction of the rotating shaft 200 is L, which satisfies 30mm≤L≤90mm. The indicator rotates synchronously with the rotating shaft 200 as the scale inhibitor is reduced, until the mark on the indicator where the scale inhibitor is consumed. Assuming that the rotating angle of the indicator from the full scale inhibitor position to the consumed position is X degrees, the rotating angle of the rotating shaft 200 from 0 degree to X degree is B=X degrees, it can be obtained that the displacement of the slider 300 from the maximum distance to the minimum distance 0 where the scale inhibitor is consumed is C=L / B, and the lead of the helical first sliding groove 210 on the rotating shaft 200 is D=C*360. Since there is a gap between the functional accessories of the product, it is difficult to achieve absolute balance between the slider 300 and the rotating shaft 200, so whether the slider 300 can normally operate depends on the lead of the rotating shaft 200. The smaller the lead, the greater the sliding resistance of the slider 300, and the slider 300 can be easily stuck as long as it has a certain inclination. When the lead is D≥90mm, the sliding resistance of the slider 300 can be effectively reduced, and the function can be ensured to normally operate even if the slider 300 has a certain inclination. Since the rotating angle of the indicator cover depends on the size of the shaft lead and the size of the capacity L, and D≥90mm, when D is greater, the rotating angle of the cover is smaller under the condition that L is unchanged, and when D is unchanged, the rotating angle of the cover is greater as L is greater, so the cover can be adjusted according to the relationship between the two values to express the desired movement mode and prompt the user. L satisfies 30mm≤L≤90mm, and the maximum value of D can be further limited to 360mm according to the above formula in this range.

[0037] In an embodiment, as shown in FIG. 1, the rotating shaft 200 is provided with a first cavity 101, and the first cavity 101 is provided with a first sliding groove 210. The first sliding groove 210 is helical, and the first sliding groove 210 is provided with a slider 300. The first cavity 101 is provided with a second cavity 102, and the second cavity 102 is provided with a second sliding groove 220. The second sliding groove 220 is helical, and the second sliding groove 220 is provided with a second slider 400. The first cavity 101 is provided with a third cavity 103, and the third cavity 103 is provided with a third sliding groove 230. The third sliding groove 230 is helical, and the third sliding groove 230 is provided with a third slider 500. The first cavity 101 is provided with a fourth cavity 104, and the fourth cavity 104 is provided with a fourth sliding groove 240. The fourth sliding groove 240 is helical, and the fourth sliding groove 240 is provided with a fourth slider 600. The first cavity 101 is provided with a fifth cavity 105, and the fifth cavity 105 is provided with a fifth sliding groove 250. The fifth sliding groove 250 is helical, and the fifth sliding groove 250 is provided with a fifth slider 700. The first cavity 101 is provided with a sixth cavity 106, and the sixth cavity 106 is provided with a sixth sliding groove 260. The sixth sliding groove 260 is helical, and the sixth sliding groove 260 is provided with a sixth slider 800. The first cavity 101 is provided with a seventh cavity 107, and the seventh cavity 107 is provided with a seventh sliding groove 270. The seventh sliding groove 270 is helical, and the seventh sliding groove 270 is provided with a seventh slider 900. The first cavity 101 is provided with an eighth cavity 108, and the eighth cavity 108 is provided with an eighth sliding groove 280. The eighth sliding groove 280 is helical, and the eighth sliding groove 280 is provided with an eighth slider 1000. Figure 1 、 Figure 2 、 Figure 5 and Figure 6As shown, the shell 100 comprises an outer cylinder 130 and an inner cylinder 140. The outer cylinder 130 is open at two ends, which are a first end 131 and a second end 132 respectively. The first end 131 forms the water inlet 103. The outer cylinder 130 is sleeved outside the inner cylinder 140. The inner cylinder 140 can be inserted into the outer cylinder 130 from the second end 132. The inner cylinder 140 is open at two ends. The end of the inner cylinder 140 close to the second end 132 is the mounting port 104. The rotating shaft 200 is rotatably mounted at the mounting port 104 of the inner cylinder 140 and penetrates the first end 131. The end of the inner cylinder 140 close to the second end 132 is provided with a snap mechanism. The snap mechanism can elastically expand and contract relative to the outer cylinder 130 to be clamped or detached from the outer cylinder 130. When the scale inhibitor needs to be supplemented, the snap mechanism is controlled to be detached from the outer cylinder 130, so that the inner cylinder 140 together with the rotating shaft 200 and the sliding block 300 can be separated from the outer cylinder 130. After the scale inhibitor is supplemented, the inner cylinder 140 together with the rotating shaft 200 and the sliding block 300 are inserted into the outer cylinder 130, and then the snap mechanism is clamped on the outer cylinder 130 again, so that the inner cylinder 140 is fixed in the outer cylinder 130, thereby facilitating the dismounting of the inner cylinder 140 and the supplement of the scale inhibitor.

[0038] Specifically, as shown in Figure 1 and Figure 6 The snap mechanism comprises a pressing plate 510, a clamping block 520 and an elastic piece 530. The pressing plate 510 is mounted on the inner cylinder 140. The pressing plate 510 can be fixed on the inner cylinder 140 by screw locking, clamping or the like. The pressing plate 510 is provided with a guide groove 511. The clamping block 520 is slidably connected to the guide groove 511. The elastic piece 530 comprises a connecting portion 531 and an elastic piece portion 532. The connecting portion 531 is in the form of a sleeve and is sleeved on the inner cylinder 140. The end of the inner cylinder 140 close to the second end 132 extends a hollow cylindrical wall 141, and the inside of the cylindrical wall 141 constitutes the mounting port 104. The connecting piece can be sleeved on the cylindrical wall 141. One end of the elastic piece portion 532 is formed on the connecting portion 531, and the other end of the elastic piece portion 532 abuts against the clamping block 520. The elastic piece portion 532 exerts an elastic force on the clamping block 520 to make the clamping block 520 extend outward in the radial direction of the rotating shaft 200. Under the elastic force of the elastic piece portion 532, the clamping block 520 is kept in an extended state and can be clamped on the inner wall of the second end 132. The clamping block 520 is clamped in the slot, so that the inner cylinder 140 is fixed in the outer cylinder 130.

[0039] Based on the above embodiment, as shown in Figure 1 and Figure 6The pressing cap 600 can be axially moved relative to the rotating shaft 200. An extension shaft can be extended at the center of the pressing cap 600 and coaxially inserted into the rotating shaft 200. The pressing cap 600 is provided with a first guide part 610, and the clamping block 520 is provided with a second guide part 521. The first guide part 610 and the second guide part 521 are relatively slidably abutted. At least one of the first guide part 610 and the second guide part 521 is provided with an inclined surface 611 at the abutting position. The inclined surface 611 is inclined to the central axis of the rotating shaft 200. In the embodiment, the abutting position of the first guide part 610 and the second guide part 521 is provided with the inclined surface 611. When the pressing cap 600 is moved towards the first end 131, the first guide part 610 is axially moved along the rotating shaft 200, and the second guide part 521 is pushed to move radially inward along the rotating shaft 200 by the inclined surface 611, so as to disengage the clamping block 520 from the outer cylinder 130. After the pressing cap 600 is loosened, the clamping block 520 is reset under the elastic force of the elastic member 530, and the pressing cap 600 is pushed to move away from the first end 131 by the second guide part 521.

[0040] In an embodiment, as shown in Figure 7 、 Figure 8 and Figure 9 , the utility model also comprises a prompt part 700 and a decorative cover 800. The prompt part 700 is coaxially installed on the end of the rotating shaft 200. The decorative cover 800 is coaxially and relatively rotatably installed on the prompt part 700, and the extension shaft of the above-mentioned pressing cap 600 can be inserted into the prompt part 700. The decorative cover 800 is relatively fixed with the inner cylinder 140. In the embodiment, a first rack 142 is arranged on the inner cylinder 140, and a second rack 820 is arranged on the inner wall of the decorative cover 800. The first rack 142 and the second rack 820 are engaged to provide a certain resistance to the decorative cover 800, which hinders the synchronous rotation of the decorative cover 800 with the prompt part 700. A visual window 810 for observing the mark on the prompt part 700 is arranged on the decorative cover. The decorative cover 800 can also be manually rotated to adjust the position of the visual window 810 relative to the prompt part 700.

[0041] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0042] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or an ordering between or among the indicated technical features. Accordingly, a feature defined with "first", "second", etc. can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited.

[0043] In the present application, unless otherwise explicitly and specifically defined, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the present application, unless otherwise explicitly and specifically defined, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0045] In the description of the present application, the description of the terms "some embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A scale inhibiting device, comprising a housing (100), a rotating shaft (200) rotatably installed in the housing (100), and a sliding block (300) sleeved on the rotating shaft (200), the sliding block (300) driving the rotating shaft (200) to rotate when moving, the sliding block (300) separating an inner part of the housing (100) into a first cavity (101) and a second cavity (102), characterized in that: Further comprising a spring (400), one side of the sliding block (300) towards the second cavity (102) is provided with a first limiting part (310), the first limiting part (310) and the circumferential side wall of the rotating shaft (200) define a limiting groove (320), the spring (400) is sleeved on the shaft segment of the rotating shaft (200) located in the second cavity (102), one end of the spring (400) extends into the limiting groove (320) and abuts against the sliding block (300), the other end of the spring (400) abuts against the cavity wall of the second cavity (102). ​ 2. The scale inhibiting device of claim 1, wherein: The first limiting part (310) extends from one side of the sliding block (300) in a circular ring shape, and the first limiting part (310) is sleeved on the spring (400).

3. The scale inhibiting device of claim 2, wherein: The cavity wall of the second cavity (102) away from the first cavity (101) is provided with a second limiting part (110) extending in a circular ring shape, the first limiting part (310) and the second limiting part (110) are coaxially arranged, and the second limiting part (110) is sleeved on the spring (400).

4. The scale inhibiting device of claim 3, wherein: The inner diameters of the first limiting part (310) and the second limiting part (110) are the same, and a plurality of circumferential gaps (330) are arranged on the first limiting part (310) and / or the second limiting part (110).

5. The scale inhibiting device of claim 1, wherein: The rotating shaft (200) is provided with a first sliding groove (210) surrounding the axis thereof and extending in a spiral shape on the circumferential side wall thereof, the sliding block (300) is provided with a first sliding convex (340) in a spherical shape, and the first sliding convex (340) is slidably connected in the first sliding groove (210). One of the inner wall of the shell (100) and the sliding block (300) is provided with a second sliding groove (120), and the other is provided with a second sliding convex (350), the second sliding convex (350) is slidably connected on the second sliding groove (120), so that the sliding block (300) can translate along the axis of the rotating shaft (200) relative to the shell (100).

6. The scale inhibiting device of claim 5, wherein: The lead of the first sliding groove (210) is D, which satisfies D≥90mm, and the maximum length of the first cavity (101) along the axis of the rotating shaft (200) is L, which satisfies 30mm≤L≤90mm.

7. The scale inhibiting device of claim 1, wherein: The shell (100) comprises an outer cylinder (130) and an inner cylinder (140), the two ends of the outer cylinder (130) are respectively a first end (131) and a second end (132), the outer cylinder (130) is sleeved outside the inner cylinder (140), the rotating shaft (200) is rotatably installed in the inner cylinder (140) and penetrates the first end (131), the end of the inner cylinder (140) close to the second end (132) is provided with a elastic buckle mechanism, and the elastic buckle mechanism can elastically stretch and contract relative to the outer cylinder (130) to clamp or disengage the outer cylinder (130).

8. The scale inhibiting device of claim 7, wherein: The elastic buckle mechanism comprises a pressing plate (510), a clamping block (520) and an elastic member (530), the pressing plate (510) is installed on the inner cylinder (140), the pressing plate (510) is provided with a guide groove (511), the clamping block (520) is slidably connected to the guide groove (511), the elastic member (530) comprises a connecting part (531) and an elastic piece part (532), the connecting part (531) is sleeved on the inner cylinder (140), and the elastic piece part (532) is abutted on the clamping block (520) to exert an elastic force on the clamping block (520) to make the clamping block (520) stretch out along the radial direction of the rotating shaft (200).

9. The scale inhibiting device of claim 8, wherein: Further comprising a pressing cover (600), the pressing cover (600) can axially move relative to the rotating shaft (200), the pressing cover (600) is provided with a first guide part (610), the clamping block (520) is provided with a second guide part (521), the first guide part (610) and the second guide part (521) are slidably abutted, and at least one of the abutting parts is provided with an inclined surface (611), the inclined surface (611) is inclined to the central axis of the rotating shaft (200).

10. The scale inhibiting device of claim 7, wherein: Further comprising a prompt member (700) and a decorative cover (800), the prompt member (700) is coaxially installed on the end of the rotating shaft (200), the decorative cover (800) is coaxially and rotatably installed on the prompt member (700), the decorative cover (800) and the inner cylinder (140) are relatively fixed, and the decorative cover (800) is provided with a visual window (810) for observing the mark on the prompt member (700).

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