Water quality detection device

Abstract

The invention relates to the technical field of water quality detection, and particularly discloses a water quality detection device which comprises a shell, a water quality detection module and a bubble guide part. Wherein the shell is internally provided with a detection cavity, a first end of the shell is provided with a water inlet channel communicated with the detection cavity, a second end of the shell is provided with a water outlet channel communicated with the detection cavity, at least two side walls of the shell are provided with detection windows, and a detection area is formed among all the detection windows in the detection cavity; the water quality detection module comprises a first transmitting end and a receiving end, and the first transmitting end and the receiving end are respectively arranged at two detection windows; the bubble guide piece is arranged in the detection cavity and is used for guiding bubbles entering the detection cavity out of the detection area. The water quality detection device can guide the movement of bubbles, so that the bubbles are far away from a detection area, the accuracy of a water quality detection result is improved, the structure is simple, and the cost is relatively low.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a water quality detection device. Background Art

[0002] Water quality testing refers to the measurement and analysis of physical, chemical, biological and radioactive indicators in water bodies through a series of technologies and methods to evaluate water quality and water environment change trends. Turbidimeter is a type of water quality testing equipment that measures the turbidity of liquid by detecting the scattering or transmission of light by suspended matter in the liquid. During the turbidity measurement process, the liquid may produce tiny bubbles when the pressure is released, the temperature rises, or it is disturbed by the outside world. These bubbles will interfere with the normal transmission of light and cause measurement errors.

[0003] At present, the traditional defoaming methods mainly include natural gravity defoaming, chemical defoaming, pressure defoaming, mechanical defoaming, etc. Natural gravity defoaming uses gravity to make bubbles float and dissipate, but the effect is limited under liquid flow conditions. Although chemical defoaming has significant effects, it will increase production costs and there is a risk of environmental pollution. Pressure defoaming eliminates bubbles by adjusting the liquid pressure. The operation is complicated and the defoaming effect varies depending on the characteristics of the liquid. Mechanical defoaming uses mechanical stirring or filtering devices to remove bubbles. The effect depends on the equipment design and may make the bubbles smaller, which in turn increases the difficulty of measurement.

[0004] Therefore, it is urgent to propose a water quality detection device to solve the above technical problems. Summary of the invention

[0005] The present invention provides a water quality detection device, which can guide the movement of bubbles and keep the bubbles away from a detection area, thereby improving the accuracy of water quality detection results, and has a simple structure and low cost.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] Water quality testing device, including:

[0008] A shell, wherein a detection cavity is disposed in the shell, a water inlet channel communicating with the detection cavity is disposed at a first end of the shell, a water outlet channel communicating with the detection cavity is disposed at a second end of the shell, detection windows are disposed on at least two side walls of the shell, and a detection area is formed between all the detection windows in the detection cavity;

[0009] A water quality detection module, comprising a first transmitting end and a receiving end, wherein the first transmitting end and the receiving end are respectively arranged at two of the detection windows;

[0010] A bubble guide is disposed in the detection cavity, and is used to guide bubbles entering the detection cavity to outside the detection area.

[0011] Optionally, an inclined turbulence plate is provided in the detection chamber, and the turbulence plate is arranged opposite to the water outlet of the water inlet channel. The water flow entering the detection chamber from the water outlet of the water inlet channel can be incident on the turbulence plate and splashed onto all the detection windows through the guidance of the turbulence plate.

[0012] Optionally, a corner of the turbulence plate close to the first end of the shell is arranged opposite to the water outlet of the water inlet channel.

[0013] Optionally, a window is provided on the side wall of the shell, a transparent plate is provided at the window, the window and the transparent plate form the detection window, and the transparent plate is smoothly arranged.

[0014] Optionally, a mounting frame for mounting the first transmitting end or the receiving end is provided on the side wall of the shell, a sealing member is provided at the outer edge of the window, and the mounting frame presses the transparent plate against the sealing member.

[0015] Optionally, the transparent plate is a quartz plate.

[0016] Optionally, the water inlet channel and the water outlet channel are both L-shaped; and / or the water inlet channel is arranged at the bottom of the shell, and the water outlet channel is arranged at the top of the shell; and / or the water outlet of the water inlet channel is staggered with the detection area.

[0017] Optionally, the water inlet of the water inlet channel is connected to a water inlet pipe, and the length of the water inlet pipe is greater than or equal to 1 m.

[0018] Optionally, the water quality detection module also includes a second transmitting end, and the detection windows are provided on three adjacent side walls of the shell, wherein the first transmitting end and the second transmitting end are respectively provided at two of the detection windows, and the receiving end is provided at another detection window.

[0019] Optionally, the bubble guide is a bubble baffle disposed below the detection area, and the bubble baffle is used to block the bubbles below the detection area; or, the bubble baffle has a guide surface, and the bubble baffle guides the bubbles to the outside of the detection area through the guide surface, so that the bubbles float outside the detection area.

[0020] Optionally, a side wall of the bubble baffle is attached to a side wall of the shell having the detection window.

[0021] Optionally, the bubble baffle is used to have a smooth surface in contact with the bubbles.

[0022] Optionally, the bubble baffle is a flat plate, and the flat plate is arranged obliquely or horizontally; or, the bubble baffle is in a "V" shape; or, the bubble baffle is in a funnel shape.

[0023] Optionally, the bubble guide is a guide tube, one end of which is connected to the water outlet of the water inlet channel, and the other end extends to above the detection area, and the guide tube is located outside the detection area.

[0024] The beneficial effects of the present invention are:

[0025] The present invention provides a water quality detection device, including a shell, a water quality detection module and a bubble guide. When the water quality detection module is working, a first transmitting end can emit light, and the light is received by a receiving end after passing through a detection area, so as to measure the turbidity or organic content of the liquid through the heat dissipation or transmission of the light by suspended matter in the liquid. By setting a bubble guide to guide the bubbles entering the detection cavity to the outside of the detection area, it is possible to avoid the bubbles from affecting the normal transmission of light, thereby improving the accuracy of the detection results. The water quality detection device adopts a bubble guiding method to avoid the influence of bubbles on the detection results. Compared with some traditional defoaming methods, it significantly improves the accuracy of the detection results, and has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a water quality detection device provided in Embodiment 1 of the present invention;

[0027] Figure 2 An exploded schematic diagram of a water quality detection device provided in Embodiment 1 of the present invention;

[0028] Figure 3 A cross-sectional view of a water quality detection device provided in Embodiment 1 of the present invention;

[0029] Figure 4 A cross-sectional view of another water quality detection device provided in Embodiment 1 of the present invention;

[0030] Figure 5 A cross-sectional view of another water quality detection device provided in Embodiment 1 of the present invention;

[0031] Figure 6 This is a cross-sectional view of a water quality detection device provided in Embodiment 2 of the present invention.

[0032] In the figure:

[0033] 100, shell; 101, cylinder; 102, upper end cover; 103, lower end cover; 104, water inlet pipe; 105, water outlet pipe; 110, detection cavity; 120, water inlet channel; 130, water outlet channel; 140, detection window; 141, window; 142, transparent plate; 143, sealing member;

[0034] 200, bubble guide; 210, bubble baffle; 220, guide tube; 300, turbulence plate; 400, mounting frame. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] Embodiment 1

[0040] This embodiment provides a water quality detection device, which can guide the movement of bubbles and keep the bubbles away from the detection area, thereby improving the accuracy of water quality detection results, and has a simple structure and low cost.

[0041] Specifically, Figure 1-Figure 3 As shown, the water quality detection device includes a housing 100 , a water quality detection module and a bubble guide 200 .

[0042] Among them, a detection cavity 110 is provided in the housing 100, a water inlet channel 120 connected to the detection cavity 110 is provided at the first end of the housing 100, and a water outlet channel 130 connected to the detection cavity 110 is provided at the second end of the housing 100. The water to be detected is transported into the detection cavity 110 through the inlet channel and flows out from the water outlet channel 130. Detection windows 140 are provided on at least two side walls of the housing 100, and a detection area is formed between all the detection windows 140 in the detection cavity 110. The water quality detection module includes a first transmitting end and a receiving end, and the water quality detection module detects the water quality in the detection area through the first transmitting end and the receiving end. The bubble guide 200 is provided in the detection cavity 110, and the bubble guide 200 is used to guide the bubbles entering the detection cavity 110 to the outside of the detection area. By providing the bubble guide 200 to guide the bubbles entering the detection cavity 110 to the outside of the detection area, it is possible to avoid the bubbles from affecting the normal transmission of the light emitted by the first transmitting end, thereby improving the accuracy of the detection result. The water quality detection device adopts a bubble guiding method to avoid the influence of bubbles on the detection results. Compared with some traditional defoaming methods, it significantly improves the accuracy of the detection results, and has a simple structure and low cost.

[0043] It is understandable that if the two detection windows 140 are arranged opposite to each other, the detection area is Figure 3 The area shown in the dotted box.

[0044] Optionally, the first transmitting end may emit an infrared light source for detecting the turbidity of water. In this configuration, two detection windows 140 may be provided, and the two detection windows 140 may be provided on two adjacent side walls of the housing 100 .

[0045] Furthermore, the water quality detection device may also include a second transmitting end, which can emit an ultraviolet light source for detecting organic matter in water. In this arrangement, detection windows 140 are provided on three adjacent side walls of the housing 100, wherein two detection windows 140 are provided with a first transmitting end and a second transmitting end respectively, and another detection window 140 is provided with a receiving end. When the second transmitting end is used to detect organic matter in water, the second transmitting end needs to be arranged opposite to the receiving end.

[0046] Further, see Figure 2 A window 141 is provided on the side wall of the housing 100, and a transparent plate 142 is sealed and blocked at the window 141. The window 141 and the transparent plate 142 form a detection window 140, and the transparent plate 142 is smoothly arranged. Compared with the conventional solution of using a quartz tube, the smooth transparent plate 142 used to form the detection window 140 has less influence on the refraction of light, reduces the influence of stray light on the detection result, and thus improves the accuracy of the water quality detection result. Optionally, the transparent plate 142 can be a quartz sheet.

[0047] Optionally, continue to see Figure 1 and Figure 2 In this embodiment, a mounting frame 400 for mounting the first transmitting end or the receiving end is provided on the side wall of the housing 100, a sealing member 143 is provided at the outer edge of the window 141, and the mounting frame 400 presses the transparent plate 142 against the sealing member 143. The transparent plate 142 seals and blocks the window 141 through the mounting frame 400 and the sealing member 143, and the sealing performance is good, and the structure is simple, and the installation and disassembly are relatively convenient.

[0048] Optionally, an annular groove for mounting the seal 143 may be provided at the outer edge of the window 141 to improve the mounting strength of the seal 143 .

[0049] Optionally, the mounting frame 400 may be connected to the side wall of the shell 100 by bolt connection, or may be connected to the side wall of the shell 100 by other means, and it can be set according to actual needs, and this application does not make any specific limitations.

[0050] In this embodiment, the side walls of the housing 100 with the detection window 140 are provided with mounting brackets 400. A through hole can be provided on the mounting bracket 400, and the first transmitting end or the receiving end is opposite to the detection window 140 through the through hole to facilitate emitting light or receiving light.

[0051] Furthermore, the water inlet channel 120 and the water outlet channel 130 can both be L-shaped. Such an arrangement makes the water inlet direction of the water inlet channel 120 perpendicular to the water outlet direction, and the water inlet direction of the water outlet channel 130 also perpendicular to the water outlet direction, so as to achieve the purpose of turbulent flow of the water in the detection cavity 110, and carry away the bubbles hanging on the detection window 140 through turbulence, so as to avoid the bubbles attached to the detection window 140 affecting the results of water quality detection, thereby improving the accuracy of the detection results.

[0052] Furthermore, the water inlet channel 120 may be disposed at the bottom of the housing 100 , and the water outlet channel 130 may be disposed at the top of the housing 100 . This arrangement allows bubbles to be better discharged from the detection cavity 110 by floating upward.

[0053] Furthermore, the water outlet of the water inlet channel 120 can be staggered with the detection area. In this way, when the bubbles generated after the water flow in the water inlet channel 120 stops suddenly, they enter the detection cavity 110 from the water outlet of the water inlet channel 120 and generally rise directly in the vertical direction. The rising path will not enter the detection area, thereby reducing the risk of bubbles entering the detection area and affecting the detection results after the water flow stops suddenly.

[0054] Further, see Figure 3 The detection cavity 110 is provided with an inclined turbulence plate 300, which is arranged opposite to the water outlet of the water inlet channel 120. The water flow entering the detection cavity 110 from the water outlet of the water inlet channel 120 can be incident on the turbulence plate 300, and splashed onto all the detection windows 140 through the guidance of the turbulence plate 300. The turbulence plate 300 is provided to change the direction of the water flow, so that the water flow can flush the detection window 140 and take away the bubbles attached to the detection window 140, thereby improving the accuracy of the water quality detection result. In addition, the turbulence plate 300 has a simple structure and low cost.

[0055] Optionally, a corner of the turbulence plate 300 close to the first end of the housing 100 is arranged opposite to the water outlet of the water inlet channel 120. In this arrangement, the water flow entering the detection cavity 110 from the water outlet of the water inlet channel 120 is directly sprayed on a corner of the turbulence plate 300, and the turbulence effect is better.

[0056] Furthermore, the water inlet of the water inlet channel 120 is connected to the water inlet pipe 104, and the length of the water inlet pipe 104 is greater than or equal to 1m. In this way, when the water flowing into the detection cavity stops suddenly, most of the bubbles generated will stay in the water inlet pipe 104, reducing the bubbles entering the detection cavity 110, which is conducive to reducing the influence of bubbles on the detection results, thereby improving the accuracy of the detection results.

[0057] Optionally, a water outlet pipe 105 may be provided at the water outlet of the water outlet channel 130 , and the water to be tested is transported into the testing cavity 110 through the water inlet pipe 104 and discharged through the water outlet pipe 105 .

[0058] Optionally, continue to see Figure 3 The shell 100 includes a cylinder 101, and a detection cavity 110 is provided in the cylinder 101. Both ends of the cylinder 101 are sealed by an upper end cover 102 and a lower end cover 103. The water inlet channel 120 is arranged on the lower end cover 103, and the water outlet channel 130 is arranged on the upper end cover 102.

[0059] Furthermore, in a possible embodiment, the upper end cover 102 and the cylinder 101, and the lower end cover 103 and the cylinder 101 can be connected by bolt connection, and the bolt connection structure is simple and easy to install and disassemble. In addition, a sealing ring is provided between the upper end cover 102 and the cylinder 101 for sealing, and a sealing ring is provided between the lower end cover 103 and the cylinder 101 for sealing.

[0060] Further, see Figure 3 The bubble guide 200 is a bubble baffle 210 disposed below the detection area, and the bubble baffle 210 is used to block the bubbles below the detection area. Alternatively, the bubble baffle 210 has a guide surface, and the bubble baffle 210 guides the bubbles to the outside of the detection area through the guide surface, so that the bubbles float outside the detection area. The bubble guide 200 has a simple structure, is easy to process, and has a low cost.

[0061] Furthermore, one side wall of the bubble baffle 210 is attached to the side wall of the housing 100 having the detection window 140. This arrangement can prevent bubbles from floating up from the gap between the bubble baffle 210 and the side wall of the housing 100 having the detection window 140 and passing through the detection window 140 to affect the detection result.

[0062] Optionally, the surface of the bubble baffle 210 that contacts the bubbles is smooth, so that the bubbles can eventually break away from the bubble baffle 210 and be discharged from the detection cavity 110 .

[0063] Optionally, continue to see Figure 3 In a possible embodiment, the bubble baffle 210 is a flat plate, which can be arranged horizontally. In this case, the flat plate can block the bubbles below the detection area to prevent the bubbles from floating up and affecting the propagation of the detection light of the water quality detection module. The flat plate can also be arranged tilted. In this case, the lower plate surface of the flat plate is a guide surface, which guides the floating direction of the bubbles so that the bubbles float outside the detection area.

[0064] Alternatively, if Figure 4As shown, in another possible embodiment, the bubble baffle 210 may also be in a funnel shape. In this configuration, the outer peripheral surfaces of the bubble baffle 210 are all guide surfaces.

[0065] Alternatively, if Figure 5 As shown, in yet another possible embodiment, the bubble baffle 210 may also be in a “V” shape.

[0066] It is understandable that the shape of the bubble baffle 210 can be set according to actual needs, and this application does not make any specific limitation.

[0067] Embodiment 2

[0068] This embodiment provides a water quality detection device, which is substantially the same in structure as the first embodiment, and is only improved on the basis of the first embodiment. Therefore, only the differences between the two are described here, and the same structures of this embodiment and the first embodiment are not repeated here.

[0069] Specifically, Figure 6 As shown, in this embodiment, the bubble guide 200 is a guide tube 220, one end of the guide tube 220 is connected to the water outlet of the water inlet channel 120, and the other end extends to the top of the detection area, and the guide tube 220 is located outside the detection area. In this way, the bubbles entering through the water inlet channel 120 will always stay away from the detection area under the action of the guide tube 220, effectively eliminating the bubbles in the detection area and improving the accuracy of the water quality detection results.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A water quality detection device, characterized in that: include: A shell (100), wherein a detection cavity (110) is provided in the shell (100), a water inlet channel (120) communicating with the detection cavity (110) is provided at a first end of the shell (100), a water outlet channel (130) communicating with the detection cavity (110) is provided at a second end of the shell (100), detection windows (140) are provided on at least two side walls of the shell (100), and a detection area is formed between all the detection windows (140) in the detection cavity (110); A water quality detection module comprises a first transmitting end and a receiving end, wherein the first transmitting end and the receiving end are respectively arranged at two of the detection windows (140); A bubble guide (200) is arranged in the detection cavity (110), and the bubble guide (200) is used to guide bubbles entering the detection cavity (110) to outside the detection area.

2. The water quality detection device according to claim 1, characterized in that: An inclined turbulence plate (300) is provided in the detection cavity (110); the turbulence plate (300) is arranged opposite to the water outlet of the water inlet channel (120); the water flow entering the detection cavity (110) from the water outlet of the water inlet channel (120) can be incident on the turbulence plate (300) and splashed onto all the detection windows (140) through the guidance of the turbulence plate (300).

3. The water quality detection device according to claim 2, characterized in that: A corner of the turbulence plate (300) close to the first end of the housing (100) is arranged opposite to the water outlet of the water inlet channel (120).

4. The water quality detection device according to claim 1, characterized in that: A window (141) is provided on the side wall of the housing (100), a transparent plate (142) is provided at the window (141), the window (141) and the transparent plate (142) form the detection window (140), and the transparent plate (142) is smoothly arranged.

5. The water quality detection device according to claim 4, characterized in that: A mounting frame (400) for mounting the first transmitting end or the receiving end is provided on the side wall of the housing (100), a sealing member (143) is provided at the outer edge of the window (141), and the mounting frame (400) presses the transparent plate (142) against the sealing member (143).

6. The water quality detection device according to claim 4, characterized in that: The transparent plate (142) is a quartz plate.

7. The water quality detection device according to claim 1, characterized in that: The water inlet channel (120) and the water outlet channel (130) are both L-shaped; And / or, the water inlet channel (120) is arranged at the bottom of the housing (100), and the water outlet channel (130) is arranged at the top of the housing (100); And / or, the water outlet of the water inlet channel (120) is arranged in a staggered manner with respect to the detection area.

8. The water quality detection device according to claim 1, characterized in that: The water inlet of the water inlet channel (120) is in communication with the water inlet pipe (104), and the length of the water inlet pipe (104) is greater than or equal to 1 m.

9. The water quality detection device according to claim 1, characterized in that: The water quality detection module further comprises a second transmitting end, and the detection windows (140) are provided on three adjacent side walls of the housing (100), wherein the first transmitting end and the second transmitting end are provided at two of the detection windows (140), respectively, and the receiving end is provided at another of the detection windows (140).

10. The water quality detection device according to any one of claims 1 to 9, characterized in that: The bubble guide (200) is a bubble baffle (210) arranged below the detection area, and the bubble baffle (210) is used to block the bubbles below the detection area; or, the bubble baffle (210) has a guide surface, and the bubble baffle (210) guides the bubbles to the outside of the detection area through the guide surface, so that the bubbles float outside the detection area.

11. The water quality detection device according to claim 10, characterized in that: One side wall of the bubble baffle (210) is attached to a side wall of the housing (100) having the detection window (140).

12. The water quality detection device according to claim 10, characterized in that: The bubble baffle (210) is used to have a smooth surface in contact with the bubbles.

13. The water quality detection device according to claim 10, characterized in that: The bubble baffle (210) is a flat plate, and the flat plate is arranged obliquely or horizontally; Alternatively, the bubble baffle (210) is in a "V" shape; Alternatively, the bubble baffle (210) is funnel-shaped.

14. The water quality detection device according to any one of claims 1 to 9, characterized in that: The bubble guide (200) is a guide tube (220), one end of which is connected to the water outlet of the water inlet channel (120), and the other end of which extends to the top of the detection area, and the guide tube (220) is located outside the detection area.

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