Burette for measuring hardness of drinking water

Abstract

The utility model discloses a burette for measuring the hardness of drinking water. The burette comprises a tube body, a moving rod and an adjusting part, a drainage hole is formed in the bottom of the pipe body, and the moving rod is vertically installed in the pipe body and used for adjusting the opening degree of the drainage hole; the adjusting piece is rotationally installed on the upper portion of the pipe body and is in threaded fit with the moving rod, and the adjusting piece is rotated to drive the moving rod to move vertically. The titration device has the beneficial effects that the moving rod is controlled to move up and down through the adjusting part, so that accurate control on liquid in the tube is realized, titration can be completed by only one hand in the use process, and the measurement convenience is improved; the titrating head inserted into the bottom of the tube body can be replaced at any time, and the titrating head can be detached and independently stored after the determination is finished so as to be prevented from being damaged.

Description

Technical Field

[0001] The present application relates to the technical field of water quality detection, and in particular to a burette for measuring the hardness of drinking water. Background Art

[0002] As the times change, people's pursuit of health continues to deepen. Water, as the source of life, is an important substance required for human life activities. Water hardness is an important criterion for measuring water quality. Long-term consumption of high-hardness water can easily lead to cardiovascular and cerebrovascular diseases, urinary diseases, etc. Therefore, timely testing of drinking water hardness is a necessary step before drinking.

[0003] Currently, drinking water hardness is typically tested by titration using chemical reagents. The endpoint is determined by a color change, and the hardness is calculated based on the titration volume and concentration of the chemical reagent. Chemical titration is performed using a burette. Traditional burettes often require two hands to operate, making the process cumbersome and potentially inaccurate. Therefore, a burette that is both convenient and accurate for measuring drinking water hardness is needed. Utility Model Content

[0004] One of the objects of the present application is to provide a burette for measuring the hardness of drinking water that can solve at least one of the defects in the above-mentioned background technology.

[0005] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: a burette for measuring the hardness of drinking water, comprising a tube body, a movable rod and an adjusting member; a drainage hole is provided at the bottom of the tube body, and the movable rod is vertically installed inside the tube body for adjusting the opening degree of the drainage hole; the adjusting member is rotatably installed on the upper part of the tube body and is threadedly engaged with the movable rod, and the movable rod is driven to move vertically by rotating the adjusting member.

[0006] Preferably, the adjusting member includes an adjusting disk, the moving rod is concentrically installed inside the tube body and is in position-limiting cooperation with the tube body in a circumferential direction; the adjusting disk is in threaded cooperation with the moving rod.

[0007] Preferably, the adjusting member includes an adjusting disk and a driving disk, the moving rod is concentrically installed inside the tube body and is limitedly engaged with the tube body in the circumferential direction; the adjusting disk is threadedly engaged with the moving rod, and the driving disk is eccentric to the tube body and engages with the adjusting disk.

[0008] Preferably, the adjusting member includes an adjusting disk, which is eccentrically arranged with respect to the tube body; the moving rod includes a driving section, a connecting section and a moving section; the driving section and the moving section are vertically spaced apart and connected by the connecting section; the moving section is concentrically arranged with respect to the tube body for cooperating with the drainage hole; the driving section is threadedly engaged with the adjusting disk.

[0009] Preferably, a rectangular hole, a limiting groove, and a support plate are provided on the tube body; a limiting block is provided on the upper end of the moving rod, and the limiting block is suitable for cooperating with the limiting groove to prevent the moving rod from rotating, and the side of the adjusting member is suitable for cooperating with the rectangular hole to extend to the outside of the tube body, and the support plate is installed on the inner wall of the tube body, and the end face of the support plate is provided with a through hole, and the through hole is suitable for plugging the moving rod.

[0010] Preferably, at least one pair of limiting rods are provided on the top of the tube body and the support plate, and the limiting rods are suitable for limiting the adjusting member.

[0011] Preferably, a plug is provided under the movable rod, and the plug adjusts the discharge speed of the liquid by plugging into the drainage hole. A protrusion extends outward from the bottom of the tube body, and a titration head is plugged into the protrusion, and the titration head is suitable for titrating in conjunction with the drainage hole.

[0012] Preferably, the cross-sections of the plug and the drainage hole are both trapezoidal, larger at the top and smaller at the bottom.

[0013] Preferably, a water inlet is provided on the upper portion of the tube body, and the water inlet is equipped with a cover plate.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] An adjusting piece and a moving rod are installed inside the burette. The side of the adjusting piece protrudes to the outside of the burette. The adjusting piece and the moving rod are matched through a thread. Turning the adjusting piece can drive the moving rod to move up and down, thereby controlling the opening degree of the drainage hole, thereby accurately adjusting the liquid discharge rate; in addition, since the side of the adjusting piece protrudes to the outside of the tube body, the adjusting piece can be controlled by the thumb after holding the burette with one hand, thereby realizing one-handed titration operation, improving the convenience of the titration process.

[0016] A titration head is movably connected to the bottom of the tube. When the titration head is damaged or blocked, it can be quickly removed and replaced. In addition, the titration head is relatively fragile and can easily break. Therefore, it can be disassembled and stored after the titration is completed, avoiding damage to the titration head due to shaking of the tube during storage and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of one of the embodiments of the present application.

[0018] Figure 2 for Figure 1 Schematic diagram of the disassembled structure.

[0019] Figure 3 for Figure 1 Schematic diagram of the cross-section structure.

[0020] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the working state.

[0021] Figure 5 This is a schematic cross-sectional view of another embodiment of the present application.

[0022] Figure 6 This is a schematic cross-sectional structural diagram of another embodiment of the present application.

[0023] In the figure: tube body 1, rectangular hole 11, limiting rod 12, limiting groove 13, support plate 14, protrusion 15, drip head 100, drain outlet 101, through-hole 140, adjustment member 2, adjustment disk 21, drive disk 22, water inlet 200, cover plate 201, moving rod 3, limiting block 31, plug 32, drive section 301, connecting section 302, moving section 303. DETAILED DESCRIPTION

[0024] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0028] One of the preferred embodiments of this application is Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a burette for measuring drinking water hardness comprises a tube body 1, an adjusting member 2, and a movable rod 3. The movable rod 3 is vertically mounted within the tube body 1, and the adjusting member 2 is mounted on the upper portion of the tube body 1. The adjusting member 2 is threadably engaged with the movable rod 3. When the adjusting member 2 is rotated, the threaded engagement causes the movable rod 3 to move up and down along the vertical direction of the tube body 1. A drainage hole 101 is provided at the bottom of the tube body 1, which is pluggable with the movable rod 3. By rotating the adjusting member 2 to control the movement of the movable rod 3, the opening size of the drainage hole can be adjusted, thereby adjusting the drainage rate.

[0029] It should be known that the traditional burette used for measuring the hardness of drinking water controls the liquid discharge rate by turning the valve or pushing and pulling the control valve, and is generally operated with both hands during titration. During titration, the valve or push-pull rod is also manually controlled directly, so the liquid discharge volume cannot be accurately controlled, which leads to inaccurate measurement results.

[0030] In this embodiment, the movement of the movable rod 3 is controlled by the adjusting member 2, thereby adjusting the drainage speed. Since the adjusting member 2 and the movable rod 3 are matched by threads, when the pitch is fixed, the drainage speed of the liquid in the tube body 1 can be uniformly increased or decreased by rotating the adjusting member 2. When the adjusting member 2 stops rotating, the drainage speed will remain unchanged, thereby increasing the accuracy of the measurement results. In addition, since a portion of the adjusting member 2 protrudes from the outer wall of the tube body 1, the adjusting member 2 can be rotated with the thumb, thereby achieving one-handed operation and increasing the convenience of use. The specific specifications and principles of the threads and pitches are well known to those skilled in the art and will not be elaborated on in detail here.

[0031] In this embodiment, there are multiple ways to install the adjusting member 2 and the moving rod 3. They can be installed concentrically along the circumference of the tube body 1 or eccentrically along the circumference of the tube body 1. The following will provide a detailed explanation of the installation methods of the adjusting member 2 and the moving rod 3 through three specific examples.

[0032] Example 1: Figure 3As shown, the moving rod 3 is concentrically installed inside the tube body 1 and is limited in the circumferential direction with the tube body 1. The adjusting member 2 includes an adjusting disk 21 and a driving disk 22. The adjusting disk 21 is concentrically installed inside the tube body 1 and is threadedly engaged with the moving rod 3. The driving disk 22 is eccentrically installed inside the tube body 1 and engages with the adjusting disk 21.

[0033] Example 2: For example Figure 5 As shown, the moving rod 3 is concentrically installed inside the tube body 1 and is limited in the circumferential direction with the tube body 1. The adjusting member 2 includes an adjusting disk 21, which is concentrically installed inside the tube body 1 and is threadedly engaged with the moving rod 3.

[0034] Example 3: If Figure 6 As shown, the moving rod 3 includes a driving section 301, a connecting section 302 and a moving section 303; the driving section 301 and the moving section 303 are vertically spaced and connected by the connecting section 302; the moving section 303 is concentrically arranged with the pipe body 1 to cooperate with the drainage hole to adjust the drainage speed, and the adjusting member 2 includes an adjusting disk 21, which is eccentrically arranged with the pipe body 1 and is threadedly matched with the driving section 301.

[0035] It can be understood that the above three examples can all meet the requirements of this application, and technicians in this field can make their own choices based on actual needs; but for the above example two, since a part of the adjusting member 2 needs to protrude outside the tube, a part of the upper side wall of the tube body 1 must be folded inward.

[0036] In this embodiment, if Figure 3 As shown, a rectangular hole 11 and a limit groove 13 are provided on the tube body 1; a limit block 31 is provided at the upper end of the moving rod 3, and by embedding the limit block 31 into the limit groove 13, it can be ensured that the moving rod 3 will not rotate when moving up and down; the rectangular hole 11 is provided on the side wall of the tube body 1, and the side edge of the adjusting member 2 can protrude out of the side wall of the tube body 1 through the rectangular hole 11.

[0037] It should be understood that, in order to ensure the effective moving distance of the moving rod, the depth of the limiting groove 13 should be greater than or equal to the length of the limiting block 31 .

[0038] It is understandable that the cross section of the moving rod can be circular or polygonal, and the cross sections of the limiting block 31 and the limiting groove 13 are polygons of the same shape.

[0039] In this embodiment, a support plate 14 is further provided on the inner wall of the tube body 1, and at least a pair of limiting rods 12 are extended along the direction of the adjusting member 2 from the upper end surface of the support plate 14 and the top of the tube body 1. The adjusting member 2 is limited by the limiting rods 12 to prevent the adjusting member 2 from moving in the vertical direction during the rotation process.

[0040] It should be noted that, in order to ensure the stability of the adjusting member 2 during the rotation process, the limiting rods 12 on the same side should be placed symmetrically.

[0041] It should also be known that in order to ensure that the moving rod 3 can pass through the support plate 14 and be installed inside the tube body 1, a through hole 140 should also be provided on the support plate 14.

[0042] In this embodiment, if Figure 3 As shown, a plug 32 is connected to the bottom of the movable rod 3. When the adjusting member 2 rotates, the plug 32 is driven to move synchronously through the movable rod 3, and the opening degree of the drain hole is further controlled according to the relative distance between the plug 32 and the drain hole, thereby controlling the discharge speed of the liquid.

[0043] It should be understood that, according to structural principles, the cross-sections of the drainage hole and the plug 32 should be trapezoidal, with a larger upper portion and a smaller lower portion, to ensure that the drainage speed can be controlled by controlling the movement of the plug 32 .

[0044] It can be understood that in order to achieve the adjustability of the drainage speed, the inclination angle of the side of the plug 32 should be less than or equal to the inclination angle of the side of the drainage hole 101. The inclination angles of the plug 32 and the drainage hole 101 are both between 15° and 75°. Considering the stability during titration, the inclination angles of the side of the plug 32 and the drainage hole 101 are set to be consistent, and the preferred angle is 60°.

[0045] In this embodiment, if Figure 4 As shown, a protrusion 15 is provided outwardly along the circumferential direction of the drainage hole at the bottom of the tube body 1, and a titration head 100 is plugged into the protrusion 15. The titration head 100 is in the shape of a tube with a thick top and a thin bottom. When the movable rod 3 moves upward, the liquid in the tube body 1 can flow into the titration head 100 through the drainage hole 101 and further refine the liquid, making the titration more accurate.

[0046] It should be noted that the titration head 100 has problems such as low structural strength and easy clogging. The titration head 100 is movably inserted under the tube body 1 through the protrusion 15. When the titration is completed or the titration head 100 is damaged, it can be quickly disassembled and replaced to ensure the safety of the titration head 100.

[0047] In this embodiment, in order to better observe the discharged volume of the liquid, the outer wall of the tube body 1 should be provided with scales, and the volume occupied by the moving rod 3 in the tube body 1 should be considered when setting the scales.

[0048] It should be noted that, considering intuitiveness and durability, the material of the tube body 1 and the titration head 100 can be transparent glass or plastic; the material of the adjustment member 2 and the moving rod 3 can be glass or plastic, or corrosion-resistant metal.

[0049] It is understandable that in order to increase the airtightness after the plug 32 is fitted with the drain hole, the surface of the plug 32 or the inner circle of the drain hole 101 should be paved with elastic and corrosion-resistant materials such as rubber to ensure that the liquid in the tube body 1 will not leak after the plug 32 is fully fitted with the drain hole 101.

[0050] In this embodiment, a water injection hole is opened above the tube body 1, and the titrant can be injected into the tube body 1 through the water injection port 200 for titration. The water injection port 200 is also equipped with a cover plate 201. Inserting the cover plate 201 into the water injection port 200 can prevent the titrant and the inside of the tube body 1 from being contaminated and thus affecting the titration results.

[0051] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A burette for measuring the hardness of drinking water, characterized in that: It includes a tube body, a moving rod and an adjusting piece; a drainage hole is provided at the bottom of the tube body, and the moving rod is vertically installed inside the tube body to adjust the opening degree of the drainage hole; the adjusting piece is rotatably installed on the upper part of the tube body and is threadedly engaged with the moving rod, and the moving rod is driven to move vertically by rotating the adjusting piece.

2. The burette for measuring drinking water hardness according to claim 1, wherein The adjusting member includes an adjusting disk. The moving rod is concentrically installed inside the tube body and is in position-limiting cooperation with the tube body in a circumferential direction. The adjusting disk is in threaded cooperation with the moving rod.

3. The burette for measuring drinking water hardness according to claim 1, wherein The adjusting member includes an adjusting disk and a driving disk. The moving rod is concentrically installed inside the tube body and is limitedly engaged with the tube body in a circumferential direction. The adjusting disk is threadedly engaged with the moving rod. The driving disk is eccentric to the tube body and meshes with the adjusting disk.

4. The burette for measuring drinking water hardness according to claim 1, wherein The adjusting member includes an adjusting disk, which is eccentrically arranged with respect to the tube body; the moving rod includes a driving section, a connecting section and a moving section; the driving section and the moving section are vertically spaced apart and connected by the connecting section; the moving section is concentrically arranged with respect to the tube body for cooperating with the drainage hole; the driving section is threadedly engaged with the adjusting disk.

5. The burette for measuring drinking water hardness according to claim 4, wherein The tube body is provided with a rectangular hole, a limiting groove and a support plate; a limiting block is provided at the upper end of the moving rod, and the limiting block is suitable for cooperating with the limiting groove to prevent the moving rod from rotating. The side of the adjusting member is suitable for cooperating with the rectangular hole to extend to the outside of the tube body, and the support plate is installed on the inner wall of the tube body. The end face of the support plate is provided with a through hole, and the through hole is suitable for plugging the moving rod.

6. The burette for measuring drinking water hardness according to claim 5, wherein At least one pair of limiting rods is provided on the top of the tube body and the support plate, and the limiting rods are suitable for limiting the adjusting member.

7. The burette for measuring drinking water hardness according to any one of claims 1 to 4, characterized in that: A plug is provided below the movable rod, and the plug is adapted to cooperate with the drainage hole to adjust the discharge speed of the liquid.

8. The burette for measuring drinking water hardness according to claim 7, wherein: The cross sections of the plug and the drainage hole are both trapezoidal in shape, being larger at the top and smaller at the bottom.

9. The burette for measuring drinking water hardness according to claim 1, wherein A bulge extends outward from the bottom of the tube body, and a titration head is plugged into the bulge. The titration head is suitable for performing titration in conjunction with the drainage hole.

10. The burette for measuring drinking water hardness according to claim 1, wherein A water inlet is provided on the upper portion of the tube body, and the water inlet is equipped with a cover plate.

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