Sampling head convenient to replace for water quality detector

Abstract

The sampling head comprises a shell, the lower surface of the shell is fixedly connected with a water permeable barrel, the inner wall of the water permeable barrel is fixedly connected with a bottom frame, the inner cavity of the water permeable barrel is movably connected with a sealing piece, the top of the shell is provided with a clamping mechanism, and the clamping mechanism is fixedly connected with the bottom frame. The clamping mechanism comprises a top pipe, the top pipe is fixedly connected to the top end of the shell, a limiting pipe penetrates through the outer surface of the top pipe, a sliding rod is slidably connected to the inner wall of the limiting pipe, an arc-shaped plate is fixedly connected to the end, located in an inner cavity of the top pipe, of the sliding rod, and a soft cushion is fixedly connected to the side, away from the sliding rod, of the arc-shaped plate. The sampling head convenient to replace for the water quality detector disclosed by the utility model has the effect of conveniently taking down a sampled sample.

Description

Technical Field

[0001] This utility model relates to the field of water quality testing technology, and in particular to a sampling head for water quality testing instruments that is easy to replace. Background Technology

[0002] Water quality testing is a crucial line of defense for safeguarding water resources, protecting human health, and maintaining ecological balance. The testing encompasses several key indicators. pH reflects the acidity or alkalinity of water; a suitable pH is essential for the survival of aquatic organisms and the self-purification capacity of water bodies. Excessive acidity or alkalinity can trigger a series of environmental problems. Dissolved oxygen content is related to the respiration of aquatic organisms; low levels can lead to oxygen deprivation and suffocation for fish and other aquatic life. In addition, there are chemical oxygen demand (COD) and biochemical oxygen demand (BOD), which measure the degree of organic pollution in water; higher values ​​indicate more severe pollution. Heavy metal content testing is also critical; excessive levels of heavy metals such as mercury, lead, and cadmium can accumulate and damage the nervous system, liver, and other organs in the human body.

[0003] For example, utility model CN213813551U discloses a fully automatic water quality analyzer, including a water quality detector and a sampling box. A wire is fixedly connected to the top of the water quality detector, and a detection head is fixedly connected to the end of the wire away from the detector. The top of the detection head extends into the inner cavity of the sampling box. The surface of the wire is coated with graduation lines. A circular plate is fixedly fitted onto the bottom of the detection head, and an annular groove is formed on the surface of the circular plate. Square tubes are fixedly connected to both sides of the bottom of the sampling box, and a spring is fixedly connected to one side of the inner cavity of each square tube. This utility model solves the problems of existing water quality analyzers, which have limitations in water quality detection when sampling water because the water is normally static. These limitations include difficulty in determining the sampling depth, inability to combine the probe and sampler, and the inability to simultaneously sample and test the water, thus reducing the effectiveness of the instrument.

[0004] The above applications currently have the following shortcomings:

[0005] It is inconvenient to remove the sample after sampling. Utility Model Content

[0006] This utility model discloses a conveniently replaceable sampling head for a water quality tester, aiming to solve the technical problem of inconvenience in removing the sample.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A water quality analyzer uses a replaceable sampling head, comprising a housing, a permeable bucket fixedly connected to the lower surface of the housing, a bottom frame fixedly connected to the inner wall of the permeable bucket, a sealing sheet movably connected to the inner cavity of the permeable bucket, and a clamping mechanism provided at the top of the housing. The clamping mechanism includes a top tube fixedly connected to the top of the housing, a limiting tube penetrating the outer surface of the top tube, a sliding rod slidably connected to the inner wall of the limiting tube, an arc-shaped plate fixedly connected to one end of the sliding rod located in the inner cavity of the top tube, and a soft pad fixedly connected to the side of the arc-shaped plate away from the sliding rod.

[0009] By incorporating a permeable bucket, external water can flow through it into the inner cavity of the outer casing, thus facilitating water sampling. A sealing plate blocks the holes in the permeable bucket, preventing water from flowing out after it enters. A clamping mechanism allows for easy connection between the outer casing and the water quality analyzer's suction end, and facilitates easy replacement of the sampling head after sampling. A limiting tube limits the sliding rod, ensuring stable lateral movement. An arc-shaped plate and soft pad protect the analyzer's suction end after the sliding rod moves.

[0010] In a preferred embodiment, the outer surface of the permeable bucket has several circular holes, the number of sealing sheets is four and the four sealing sheets are evenly distributed, a support rod is fixedly connected to the inner wall of the permeable bucket, a limit ring is fixedly connected to the end of the support rod, a movable rod is slidably connected to the inner cavity of the limit ring, the end of the movable rod is fixedly connected to the surface of the sealing sheet, and a first spring is sleeved on the outer surface of the movable rod.

[0011] By setting four sealing plates, the inner wall of the permeable bucket can be sealed to prevent water from flowing out. By setting a limiting ring, the moving rod can be limited, so that the moving rod can move stably laterally in the inner cavity of the limiting ring. By setting a first spring, the moving rod can be squeezed, so that the sealing plates are always subjected to the squeezing force against the inner wall of the permeable bucket.

[0012] In a preferred embodiment, a second spring is sleeved on the outer surface of the sliding rod, the end of the second spring is fixedly connected to the inner wall of the limiting tube, a pull rod is fixedly connected to the end of the sliding rod away from the arc plate, a first sealing ring is fixedly connected to the upper surface of the top tube, a second sealing ring is fixedly connected to the inner wall of the top tube, and the bottom end of the second sealing ring is fixedly connected to the inner wall of the outer shell.

[0013] By setting a second spring, the sliding rod can be squeezed, so that the sliding rod is always subjected to a squeezing force towards the inner cavity of the jacking pipe. By setting a pull rod, the operator can easily pull the sliding rod. By setting a first sealing ring and a second sealing ring, the sealing between the water suction end of the detector and the inner cavity of the jacking pipe can be increased, thereby preventing water from flowing out.

[0014] As can be seen from the above, a water quality analyzer with a replaceable sampling head has the following improvements and advantages compared with the existing technology;

[0015] Firstly, by setting up a permeable bucket, external water can flow through the bucket into the inner cavity of the outer shell, thereby completing the water quality sampling work. By setting up a sealing plate, the holes of the permeable bucket can be blocked, preventing water from flowing out after it enters the bucket.

[0016] Secondly, by setting up a clamping mechanism, the outer shell can be easily connected to the water absorption end of the water quality analyzer, and the sampling head can be easily replaced after sampling is completed. By setting up a limiting tube, the sliding rod can be limited, so that the sliding rod can produce stable lateral movement. By setting up an arc plate and a soft pad, the arc plate and soft pad can protect the water absorption end of the analyzer after the sliding rod moves. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a water quality testing instrument with a conveniently replaceable sampling head proposed in this utility model.

[0018] Figure 2 This is a side view of the structure of a water quality analyzer with a replaceable sampling head proposed in this utility model.

[0019] Figure 3 This is a partial cross-sectional view of a water quality testing instrument with a replaceable sampling head proposed in this utility model.

[0020] Figure 4 This is a partial structural diagram of a water quality testing instrument with a replaceable sampling head proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of a clamping mechanism for a water quality analyzer that is easy to replace.

[0022] In the attached diagram: 1. Outer shell; 2. Water-permeable tank; 3. Base frame; 4. Sealing plate; 5. Support rod; 6. Limiting ring; 7. Moving rod; 8. First spring; 9. Clamping mechanism; 91. Top tube; 92. First sealing ring; 93. Second sealing ring; 94. Limiting tube; 95. Sliding rod; 96. Pull rod; 97. Second spring; 98. Arc plate; 99. Soft pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention discloses a water quality tester with a replaceable sampling head, which is mainly used in scenarios where it is inconvenient to remove the sample.

[0026] Reference Figure 1 - Figure 5 A water quality analyzer uses a replaceable sampling head, comprising a housing 1, a permeable tank 2 fixedly connected to the lower surface of the housing 1, a bottom frame 3 fixedly connected to the inner wall of the permeable tank 2, a sealing sheet 4 movably connected to the inner cavity of the permeable tank 2, and a clamping mechanism 9 provided at the top of the housing 1. The clamping mechanism 9 includes a top tube 91 fixedly connected to the top of the housing 1, a limiting tube 94 penetrating the outer surface of the top tube 91, a sliding rod 95 slidably connected to the inner wall of the limiting tube 94, an arc-shaped plate 98 fixedly connected to one end of the sliding rod 95 located in the inner cavity of the top tube 91, and a soft pad 99 fixedly connected to the side of the arc-shaped plate 98 away from the sliding rod 95. The permeable bucket 2 allows external water to flow into the inner cavity of the outer shell 1, thus completing the water sampling work. By setting a sealing plate 4, the holes of the permeable bucket 2 can be blocked, preventing water from flowing out after entering the permeable bucket 2. By setting a clamping mechanism 9, the outer shell 1 can be easily connected to the water absorption end of the water quality detector, and the sampling head can be easily replaced after sampling is completed. By setting a limiting tube 94, the sliding rod 95 can be limited, so that the sliding rod 95 can produce stable lateral movement. By setting an arc plate 98 and a soft pad 99, the arc plate 98 and the soft pad 99 can protect the water absorption end of the detector after the sliding rod 95 moves.

[0027] Reference Figure 1 - Figure 4In a preferred embodiment, the outer surface of the permeable bucket 2 has several circular holes, and there are four sealing plates 4 evenly distributed. The four sealing plates 4 can seal the inner wall of the permeable bucket 2 to prevent water from flowing out. A support rod 5 is fixedly connected to the inner wall of the permeable bucket 2. A limit ring 6 is fixedly connected to the end of the support rod 5. A moving rod 7 is slidably connected to the inner cavity of the limit ring 6. The end of the moving rod 7 is fixedly connected to the surface of the sealing plate 4. A first spring 8 is sleeved on the outer surface of the moving rod 7. By setting the limit ring 6, the moving rod 7 can be limited, so that the moving rod 7 can move laterally stably in the inner cavity of the limit ring 6. By setting the first spring 8, the moving rod 7 can be squeezed, so that the sealing plate 4 is always subjected to a squeezing force against the inner wall of the permeable bucket 2.

[0028] Reference Figure 1 and Figure 5 In a preferred embodiment, a second spring 97 is sleeved on the outer surface of the sliding rod 95. The end of the second spring 97 is fixedly connected to the inner wall of the limiting tube 94. A pull rod 96 is fixedly connected to the end of the sliding rod 95 away from the arc plate 98. By setting the second spring 97, the sliding rod 95 can be squeezed, so that the sliding rod 95 is always subjected to a squeezing force towards the inner cavity of the top tube 91. By setting the pull rod 96, it is convenient for the operator to pull the sliding rod 95. A first sealing ring 92 is fixedly connected to the upper surface of the top tube 91, and a second sealing ring 93 is fixedly connected to the inner wall of the top tube 91. The bottom end of the second sealing ring 93 is fixedly connected to the inner wall of the outer shell 1. By setting the first sealing ring 92 and the second sealing ring 93, the sealing between the water suction end of the detector and the inner cavity of the top tube 91 can be increased, thereby preventing water from flowing out.

[0029] Working principle: During use, the operator places the jacking pipe 91 on the outer surface of the water suction end of the detector, and ensures that the first sealing ring 92 and the second sealing ring 93 are in tight contact with the outer surface of the water suction end of the detector. Then, the detector is started to work, thereby generating suction. Under the action of suction, the sealing plate 4 and the moving rod 7 move laterally, so that the sealing plate 4 no longer blocks the water permeable tank 2, allowing water to enter the inner cavity of the outer shell 1. After sampling, the sealing plate 4 re-contacts the water permeable tank 2, thereby preventing water from flowing out.

[0030] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A water quality analyzer with a replaceable sampling head, comprising a housing (1), characterized in that, A permeable bucket (2) is fixedly connected to the lower surface of the outer shell (1). A bottom frame (3) is fixedly connected to the inner wall of the permeable bucket (2). A sealing sheet (4) is movably connected to the inner cavity of the permeable bucket (2). A clamping mechanism (9) is provided on the top of the outer shell (1). The clamping mechanism (9) includes a top tube (91). The top tube (91) is fixedly connected to the top of the outer shell (1). A limiting tube (94) passes through the outer surface of the top tube (91). A sliding rod (95) is slidably connected to the inner wall of the limiting tube (94). An arc plate (98) is fixedly connected to one end of the sliding rod (95) located in the inner cavity of the top tube (91). A soft pad (99) is fixedly connected to the side of the arc plate (98) away from the sliding rod (95).

2. The easily replaceable sampling head for a water quality analyzer according to claim 1, characterized in that, The outer surface of the permeable bucket (2) has several circular holes.

3. The easily replaceable sampling head for a water quality analyzer according to claim 1, characterized in that, The number of the sealing pieces (4) is four, and the four sealing pieces (4) are evenly distributed.

4. The easily replaceable sampling head for a water quality analyzer according to claim 1, characterized in that, A support rod (5) is fixedly connected to the inner wall of the permeable bucket (2), and a limit ring (6) is fixedly connected to the end of the support rod (5).

5. The easily replaceable sampling head for a water quality analyzer according to claim 4, characterized in that, A movable rod (7) is slidably connected to the inner cavity of the limiting ring (6). The end of the movable rod (7) is fixedly connected to the surface of the sealing sheet (4). A first spring (8) is sleeved on the outer surface of the movable rod (7).

6. The easily replaceable sampling head for a water quality analyzer according to claim 1, characterized in that, The outer surface of the sliding rod (95) is fitted with a second spring (97), the end of the second spring (97) is fixedly connected to the inner wall of the limiting tube (94), and a pull rod (96) is fixedly connected to the end of the sliding rod (95) away from the arc plate (98).

7. The easily replaceable sampling head for a water quality analyzer according to claim 1, characterized in that, A first sealing ring (92) is fixedly connected to the upper surface of the top tube (91), and a second sealing ring (93) is fixedly connected to the inner wall of the top tube (91). The bottom end of the second sealing ring (93) is fixedly connected to the inner wall of the outer shell (1).

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