Device for detecting content of residual chlorine in water body

Abstract

The invention relates to the field of water quality detection, and particularly discloses a water body residual chlorine content detection device which comprises a water tank, an extraction device for extracting water in the water tank, and a residual chlorine detector connected with the extraction device, the extraction device comprises a linear driving part, a hollow sleeve mounted at the output end of the linear driving part, a hollow rotating shaft which is inserted into the hollow sleeve and can rotate relative to the hollow sleeve, and a plurality of sampling pipes which are mounted on the hollow rotating shaft and are communicated with the hollow rotating shaft, and inlets of the plurality of sampling pipes are distributed in the water tank in a staggered manner; the hollow rotating shaft is vertically arranged, a guide rod is fixed on the hollow rotating shaft, a guide groove which spirally extends is formed in the inner wall of the water tank, and one end of the guide rod is inserted into the guide groove. The pumping device further comprises a sampling pump, a hose and a water sample tank, one end of the hose is connected with an inlet of the sampling pump, and the other end of the hose is connected with a hollow sleeve; the residual chlorine detector is fixed on the water sample tank, and a probe of the residual chlorine detector extends into the water sample tank. The method has the effect of accurate detection.

Description

Technical Field

[0001] The present application relates to the field of water quality detection, and in particular to a device for detecting residual chlorine content in water. Background Art

[0002] Water residual chlorine detection refers to the detection of the amount of residual chlorine in water, which is the remaining effective chlorine after chlorination disinfection, including free residual chlorine and combined residual chlorine. Free residual chlorine mainly exists in the form of Cl2, HOCl, OCl-, etc., while combined residual chlorine is chloramines generated by the reaction of free chlorine and ammonium substances.

[0003] The existing residual chlorine detection devices and detection methods cannot ensure that the residual chlorine is evenly distributed in the water samples due to the diversity of water samples. When detecting the residual chlorine at a specific location, it is difficult to obtain accurate detection results. Summary of the invention

[0004] In order to improve the problem of detection accuracy, the present application provides a device for detecting residual chlorine content in water.

[0005] The present application provides a water residual chlorine content detection device adopts the following technical solution: A device for detecting residual chlorine content in a water body, characterized in that it comprises a water tank, an extraction device for extracting water from the water tank, and a residual chlorine detector connected to the extraction device; the extraction device comprises a linear drive member, a hollow sleeve installed on the output end of the linear drive member, a hollow shaft inserted into the hollow sleeve and capable of rotating relative to the hollow sleeve, and a plurality of sampling tubes installed on the hollow shaft and connected to the hollow shaft, wherein the inlets of the plurality of sampling tubes are staggeredly distributed in the water tank; the hollow shaft is vertically arranged, a guide rod is fixed on the hollow shaft, a spirally extending guide groove is provided on the inner wall of the water tank, one end of the guide rod is inserted into the guide groove, the extraction device also comprises a sampling pump, a hose, and a water sample box, one end of the hose is connected to the inlet of the sampling pump, and the other end is connected to the hollow sleeve, the outlet of the sampling pump is connected to the water sample box, the residual chlorine detector is fixed on the water sample box, and the probe of the residual chlorine detector extends into the water sample box.

[0006] Optionally, a stirring rod is fixed on the output end of the linear drive, and the stirring rod is inserted into the hollow rotating shaft.

[0007] Optionally, a threaded hole is provided on the hollow rotating shaft, one end of the sampling tube has an external thread, and the sampling tube is threadedly connected to the hollow rotating shaft.

[0008] Optionally, a balancing block is fixed to the end of the guide rod that is not inserted into the guide groove, and the balancing block is in sliding contact with the inner wall of the water tank.

[0009] Optionally, an annular seat is fixed to the output end of the linear drive component, an annular groove is provided on the annular seat, the hollow sleeve is composed of two symmetrically arranged half sleeves, the outer wall of the hollow sleeve has an external thread, an internal thread is provided in the annular groove, the hollow sleeve is threadedly connected to the annular seat via the external thread, and a connecting hole is provided on one of the half sleeves.

[0010] Optionally, the stirring rod includes a rod body and a stirring blade fixed on the rod body, and the stirring blade includes a long blade and a short blade, wherein the length of the long blade is greater than the length of the short blade.

[0011] Optionally, the linear drive member is a pneumatic cylinder or an oil cylinder.

[0012] Optionally, the linear drive component includes a motor, a screw fixed on the motor output shaft, a threaded sleeve threadedly connected to the screw, the hollow sleeve fixed on the threaded sleeve, and a guide rod fixed on the water tank and passing through the threaded sleeve.

[0013] Optionally, the guide rod is a special-shaped rod, a radial hole is opened in the side wall of the guide rod along its radial direction, and a plurality of special-shaped rods are evenly distributed along the circumferential direction of the screw rod.

[0014] Optionally, a stirring rod is fixed to the end of the screw, and the stirring rod partially overlaps with the guide rod in the axial direction.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: the present solution adopts a single drive method to achieve multi-point sampling and multiple mixing, thereby improving detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a partial structural diagram of Example 1 of the present application; Figure 3 It is a partial structural diagram of Example 2 of the present application; Figure 4 It is a schematic diagram of the guide rod structure of Example 2 of the present application.

[0017] Figure numerals: 1. water tank; 2. residual chlorine detector; 3. hollow sleeve; 4. hollow shaft; 5. sampling tube; 6. annular seat; 7. annular groove; 8. connecting hole; 9. annular limit block; 10. guide rod; 11. guide groove; 12. balance block; 13. stirring rod; 14. long paddle; 15. short paddle; 16. rod body; 17. sampling pump; 18. hose; 19. water sample box; 20. motor; 21. screw; 22. threaded sleeve; 23. guide rod; 24. cylinder; 25. radial hole. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0019] Embodiment 1: A device for detecting residual chlorine content in water comprises a water tank 1, an extraction device for extracting water from the water tank 1, and a residual chlorine detector 2 connected to the extraction device. The water tank 1 has an inlet and an outlet, and is externally connected to an inlet pipe and an outlet pipe, and electromagnetic valves are arranged on the inlet pipe and the outlet pipe.

[0020] The extraction device includes a linear drive, a hollow sleeve 3 installed on the output end of the linear drive, a hollow shaft 4 inserted into the hollow sleeve 3 and capable of rotating relative to the hollow sleeve 3, and a plurality of sampling tubes 5 installed on the hollow shaft 4 and connected to the hollow shaft 4. The inlets of the plurality of sampling tubes 5 are staggeredly distributed in the water tank 1. The staggered distribution of the plurality of sampling tubes 5 means that the inlets of the plurality of sampling tubes 5 have different heights in the water tank 1 and different radial distances from the hollow shaft 4. The hollow shaft 4 is provided with a threaded hole. One end of the sampling tube 5 has an external thread, and the sampling tube 5 is threadedly connected to the hollow shaft 4. An annular seat 6 is fixed to the output end of the linear drive, and an annular groove 7 is provided on the annular seat 6. The hollow sleeve 3 is composed of two symmetrically arranged half sleeves, and the outer wall of the hollow sleeve 3 has an external thread, and an internal thread is provided in the annular groove 7. The hollow sleeve 3 is threadedly connected to the annular seat 6 through the external thread, and a connecting hole 8 is provided on one of the half sleeves, and the connecting hole 8 is used to connect the hose 18. The hollow shaft 4 is closed at the bottom and open at the top.

[0021] The hollow sleeve 3 is composed of two half sleeves to facilitate the installation of the hollow shaft 4. The inner wall of the hollow sleeve 3 has an annular limit groove, and the hollow shaft 4 has an annular limit block 9, which is located in the annular limit groove. Even if there is partial water leakage in the threaded connection, it will not affect the detection, and the installation is simpler.

[0022] The hollow rotating shaft 4 is arranged vertically, and a guide rod 10 is fixed on the hollow rotating shaft 4. The guide rod 10 is arranged horizontally. A spirally extending guide groove 11 is opened on the inner wall of the water tank 1. One end of the guide rod 10 is inserted into the guide groove 11, and a balancing block 12 is fixed to the end of the guide rod 10 that is not inserted into the guide groove 11. The balancing block 12 is in sliding contact with the inner wall of the water tank 1; specifically, the balancing block 12 is an arc-shaped block structure, and its arc surface fits with the inner wall of the water tank 1, so that the two ends of the guide rod 10 are not easily deformed when subjected to force.

[0023] In this embodiment, the linear drive member adopts an oil cylinder or an air cylinder 24, and the air cylinder 24 is generally preferred. A vertically arranged stirring rod 13 is fixed on the output end (piston rod) of the air cylinder 24, and the stirring rod 13 is inserted into the hollow rotating shaft 4. The stirring rod 13 includes a rod body 16 and a stirring blade fixed on the rod body 16, and the stirring blade includes a long blade 14 and a short blade 15, wherein the length of the long blade 14 is greater than the length of the short blade 15. The rod body 16 and the piston rod of the air cylinder 24 are fixed. Through the distribution of the long blade 14 and the short blade 15, the stirring is more uniform.

[0024] The extraction device also includes a sampling pump 17, a hose 18, and a water sample box 19. One end of the hose 18 is connected to the inlet of the sampling pump 17, and the other end is connected to the hollow sleeve 3. The outlet of the sampling pump 17 is connected to the water sample box 19. The residual chlorine detector 2 is fixed on the water sample box 19, and the probe of the residual chlorine detector 2 extends into the water sample box 19.

[0025] The implementation principle of a water residual chlorine content detection device in an embodiment of the present application is as follows: when the linear drive member drives the hollow shaft 4 to move downward for sampling, the hollow shaft 4 will rotate synchronously due to the existence of the guide rod 10. At this time, multiple sampling tubes 5 act as stirring blades to stir the water in the water tank 1, and finally descend to the lowest position for sampling. Moreover, since the multiple sampling tubes 5 are staggered and distributed, there are many sampling positions, and the sampling is more accurate. During the sampling process, the cylinder 24 drives the hollow shaft 4 to move upward. After the drawn water sample enters the hollow shaft 4, it will collide with the stirring rod 13 for further mixing, and finally enter the water sample box 19 to be detected by the probe of the residual chlorine detector 2.

[0026] Embodiment 2: A device for detecting residual chlorine content in water, comprising a water tank 1, an extraction device for extracting water from the water tank 1, and a residual chlorine detector 2 connected to the extraction device.

[0027] The extraction device includes a linear drive, a hollow sleeve 3 installed on the output end of the linear drive, a hollow shaft 4 inserted into the hollow sleeve 3 and capable of rotating relative to the hollow sleeve 3, and a plurality of sampling tubes 5 installed on the hollow shaft 4 and connected to the hollow shaft 4, wherein the inlets of the plurality of sampling tubes 5 are staggeredly distributed in the water tank 1. The staggered distribution of the plurality of sampling tubes 5 means that the inlets of the plurality of sampling tubes 5 have different heights in the water tank 1 and different radial distances from the hollow shaft 4. A connecting hole 8 is provided on the hollow sleeve 3, and the connecting hole 8 is used to connect a hose 18. The hollow shaft 4 is closed at the bottom and open at the top.

[0028] The inner wall of the hollow sleeve 3 is provided with an annular limiting groove, and the hollow rotating shaft 4 is provided with an annular limiting block 9, and the annular limiting block 9 is located in the annular limiting groove.

[0029] The hollow rotating shaft 4 is arranged vertically, and a guide rod 10 is fixed on the hollow rotating shaft 4. The guide rod 10 is arranged horizontally. A spirally extending guide groove 11 is opened on the inner wall of the water tank 1. One end of the guide rod 10 is inserted into the guide groove 11, and a balancing block 12 is fixed to the end of the guide rod 10 that is not inserted into the guide groove 11. The balancing block 12 is in sliding contact with the inner wall of the water tank 1; specifically, the balancing block 12 is an arc-shaped block structure, and its arc surface fits with the inner wall of the water tank 1, so that the two ends of the guide rod 10 are not easily deformed when subjected to force.

[0030] In this embodiment, the linear drive member includes a motor 20, a screw 21 fixed on the output shaft of the motor 20, a threaded sleeve 22 threadedly connected to the screw 21, and a hollow sleeve 3 fixed on the threaded sleeve 22 and a guide rod 23 fixed on the water tank 1 and passing through the threaded sleeve 22. In this scheme, the hollow sleeve 3 is cut in half and then welded. The guide rod 23 is a special-shaped rod, and the side wall of the guide rod 23 is provided with radial holes 25 along its radial direction, and the special-shaped rod is evenly distributed in multiple along the circumferential direction of the screw 21. A stirring rod 13 is fixed to the end of the screw 21, and the stirring rod 13 partially overlaps with the guide rod 23 in the axial direction. The combination of the guide rod 23 and the stirring rod 13 further stirs the water sample flowing into the hollow rotating shaft 4. The stirring rod 13 is inserted into the hollow rotating shaft 4. The stirring rod 13 includes a rod body 16 and a stirring blade fixed on the rod body 16, and the stirring blade includes a long paddle 14 and a short paddle 15, wherein the length of the long paddle 14 is greater than the length of the short paddle 15. Wherein the piston rod of rod body 16 and cylinder 24 is fixed. Through the distribution of long blade 14 and short blade 15, stirring is more uniform.

[0031] The extraction device also includes a sampling pump 17, a hose 18, and a water sample box 19. One end of the hose 18 is connected to the inlet of the sampling pump 17, and the other end is connected to the hollow sleeve 3. The outlet of the sampling pump 17 is connected to the water sample box 19. The residual chlorine detector 2 is fixed on the water sample box 19, and the probe of the residual chlorine detector 2 extends into the water sample box 19.

[0032] The implementation principle of a water body residual chlorine content detection device in an embodiment of the present application is as follows: when the linear drive member drives the hollow shaft 4 to move downward for sampling, the hollow shaft 4 will rotate synchronously due to the existence of the guide rod 10. At this time, multiple sampling tubes 5 act as stirring blades to stir the water in the water tank 1, and finally descend to the lowest position for sampling. Moreover, since the multiple sampling tubes 5 are staggered and distributed, there are many sampling positions, and the sampling is more accurate. During the sampling process, the motor 20 drives the hollow shaft 4 to move upward. After the drawn water sample enters the hollow shaft 4, it will collide with the stirring rod 13 for further mixing. The stirring rod 13 will rotate in the opposite direction in the hollow shaft 4, and finally enter the water sample box 19 to be detected by the probe of the residual chlorine detector 2.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 an indirect connection 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.

[0035] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for detecting residual chlorine content in water, characterized in that: It includes a water tank, an extraction device for extracting water from the water tank, and a residual chlorine detector connected to the extraction device; the extraction device includes a linear drive, a hollow sleeve installed on the output end of the linear drive, a hollow shaft inserted into the hollow sleeve and capable of rotating relative to the hollow sleeve, and a plurality of sampling tubes installed on the hollow shaft and connected to the hollow shaft, and the inlets of the plurality of sampling tubes are staggered in the water tank; the hollow shaft is vertically arranged, a guide rod is fixed on the hollow shaft, a spirally extending guide groove is opened on the inner wall of the water tank, one end of the guide rod is inserted into the guide groove, the extraction device also includes a sampling pump, a hose, and a water sample box, one end of the hose is connected to the inlet of the sampling pump, and the other end is connected to the hollow sleeve, the outlet of the sampling pump is connected to the water sample box, the residual chlorine detector is fixed on the water sample box, and the probe of the residual chlorine detector extends into the water sample box.

2. A water residual chlorine content detection device according to claim 1, characterized in that: A stirring rod is fixed on the output end of the linear drive, and the stirring rod is inserted into the hollow rotating shaft.

3. A water residual chlorine content detection device according to claim 1, characterized in that: A threaded hole is provided on the hollow rotating shaft, one end of the sampling tube has an external thread, and the sampling tube is threadedly connected to the hollow rotating shaft.

4. A water residual chlorine content detection device according to claim 1, characterized in that: A balancing block is fixed to one end of the guide rod that is not inserted into the guide groove, and the balancing block is in sliding contact with the inner wall of the water tank.

5. A water residual chlorine content detection device according to claim 1, characterized in that: An annular seat is fixed to the output end of the linear drive component, an annular groove is provided on the annular seat, the hollow sleeve is composed of two symmetrically arranged half sleeves, the outer wall of the hollow sleeve has an external thread, an internal thread is provided in the annular groove, the hollow sleeve is threadedly connected to the annular seat via the external thread, and a connecting hole is provided on one of the half sleeves.

6. A water body residual chlorine content detection device according to claim 2, characterized in that: The stirring rod comprises a rod body and a stirring blade fixed on the rod body, and the stirring blade comprises a long blade and a short blade, wherein the length of the long blade is greater than that of the short blade.

7. A water residual chlorine content detection device according to claim 1, characterized in that: The linear drive member is a pneumatic cylinder or an oil cylinder.

8. A water residual chlorine content detection device according to claim 1, characterized in that: The linear drive component includes a motor, a screw fixed on the motor output shaft, a threaded sleeve threadedly connected to the screw, the hollow sleeve fixed on the threaded sleeve, and a guide rod fixed on the water tank and passing through the threaded sleeve.

9. A water residual chlorine content detection device according to claim 8, characterized in that: The guide rod is a special-shaped rod, a radial hole is opened in the side wall of the guide rod along its radial direction, and a plurality of special-shaped rods are evenly distributed along the circumferential direction of the screw rod.

10. A water residual chlorine content detection device according to claim 9, characterized in that: A stirring rod is fixed to the end of the screw rod, and the stirring rod partially overlaps with the guide rod in the axial direction.

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