Water quality monitoring stratified sampling device

Abstract

A water quality monitoring stratified sampling device comprises a sampling mechanism, the sampling mechanism comprises a lower sampling rod, the bottom end of the lower sampling rod is fixedly communicated with a sampling plug, the middle of the sampling plug is provided with an L-shaped air inlet, the upper portion of the inner side of the sampling plug is fixedly connected with a spring, and a columnar floating weight is located at the bottom end of the inner side of the lower sampling rod and is fixedly connected with the sampling plug. The outer side of the lower sampling rod is sleeved with an outer sleeve rod in a contact mode, the bottom end of the outer sleeve rod is fixedly connected with a supporting side plate arranged on the outer side of the lower sampling rod in a contact mode, an air storage cavity is formed in the upper portion of the lower sampling rod and the inner side of the upper portion of the outer sleeve rod, supporting top blocks are fixedly connected to the top ends of the two sides in the outer sleeve rod, and an air opening is formed between the two supporting top blocks. The air opening is matched with the spherical floating weight, and the top end of the pressing rod makes contact with or is not fixedly connected with the supporting top block. The device is convenient to carry for sampling and stratified sampling, effectively prevents water leakage, ensures the purity of samples, and is convenient for later analysis and treatment.

Description

Technical Field

[0001] The utility model relates to the field of water quality samplers, in particular to a water quality monitoring layered sampling device. Background Art

[0002] Water quality monitoring is the process of monitoring and measuring the types of pollutants in water bodies, the concentrations of various pollutants and their changing trends, and evaluating the water quality. The main monitoring items of water quality monitoring can be divided into two categories: one is the comprehensive indicators reflecting the water quality, such as temperature, color, turbidity, pH value, conductivity, suspended solids, dissolved oxygen, chemical oxygen demand and biological oxygen demand, etc. The other is some toxic substances, such as phenol, cyanide, arsenic, lead, chromium, cadmium, mercury and organic pesticides. In order to objectively evaluate the water quality of rivers and oceans, in addition to the above monitoring items, flow rate and flow rate are sometimes required. Determination, generally, when sampling, the population is divided into non-overlapping layers, and then a certain number of individuals are independently extracted from each layer according to a certain proportion, and the individuals taken out of each layer are combined as samples. This sampling method is a stratified sampling, also known as classification sampling or type sampling. The population is divided into several homogeneous layers, and then random sampling or mechanical sampling is carried out within each layer. The characteristic of stratified sampling is that it combines scientific grouping method with sampling method. Grouping reduces the influence of variability of each sampling layer, and sampling ensures that the sampled samples are sufficiently representative.

[0003] A search revealed a Chinese Utility Model Patent Application No. CN202122556361.2, which describes a stratified sampling device for water quality monitoring. When the device is placed in water, water pressure simultaneously compresses the conical slider and the first T-shaped pressure plate, aligning the third and second flow slots. The water sample then flows through the third and first flow slots into the first empty slot, completing the sampling process. However, this device has a disadvantage: water quality can easily leak after sampling. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a water quality monitoring stratified sampling device, which is easy to carry and sample, and can be used for stratified sampling, effectively preventing water leakage, ensuring the purity of the sample, and facilitating subsequent analysis and processing.

[0005] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model is:

[0006] The hopper is fixedly connected to the bottom of the hopper and is secured to the bottom of the hopper by means of an L-shaped screw thread insert, the hopper being secured to the bottom of the hopper and is secured to the bottom of the hopper by means of an L-shaped screw thread insert.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] The overall structure of this device is easy to carry, which is convenient for stratified sampling of water quality at different depths and convenient for subsequent stratified analysis and processing; a sealing gasket is provided between the supporting side plate and the lower sampling rod, and a sealing gasket is provided between the outer rod and the lower sampling rod to increase the sealing and prevent side leakage of water quality after sampling.

[0009] As an improvement, the lower portion of the lower sampling rod is fixedly connected to support a side edge protrusion placed on the base.

[0010] As an improvement, a sealing gasket is provided between the supporting side plate and the lower sampling rod to increase the sealing performance and prevent the water from leaking after sampling.

[0011] As an improvement, a second sealing gasket is provided between the outer sleeve and the lower sampling rod.

[0012] As an improvement, the top of the columnar floating weight is a pointed structure, and the inner side of the bottom end of the lower sampling rod is provided with an inclined inner slope adapted to the pointed structure. After sampling, the air pressure prevents water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Reference table of accompanying symbols:

[0015] 3-groove, 4-sampling mechanism, 5-lower sampling rod, 6-side edge protrusion, 7-support side plate, 8-outer rod, 9-sealing gasket 1, 11-sampling plug, 12-L-type air inlet, 13-spring, 14-columnar floating weight, 15-L-type stratified water storage chamber, 16-air storage cavity, 18-sealing gasket 2, 19-handle rod, 20-support top block, 21-air port, 22-spherical floating weight. DETAILED DESCRIPTION

[0016] The following further describes specific embodiments of the present invention with reference to the accompanying drawings. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0017] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0018] like Figure 1 As shown, a water quality monitoring stratified sampling device includes: a sampling mechanism 4, the sampling mechanism 4 includes: a lower sampling rod 5, the bottom end of the lower sampling rod 5 is fixedly connected to a sampling plug 11, an L-shaped air inlet 12 is provided in the middle of the sampling plug 11, a spring 13 is fixedly connected to the upper inner side of the sampling plug 11, a columnar floating weight 14 is fixedly connected to the upper part of the spring 13, the columnar floating weight 14 is located at the bottom inner side of the lower sampling rod 5, the outer side of the lower sampling rod 5 is in contact with an outer sleeve rod 8, and the bottom end of the outer sleeve rod 8 is fixedly connected to the support side of the outer side of the lower sampling rod 5. Plate 7, a pressure rod 15 is provided on the inner side of the lower sampling rod 5 that does not contact the inner wall of the lower sampling rod 5, and an air storage cavity 16 is provided above the lower sampling rod 5 and on the inner side of the upper part of the outer rod 8. The top ends of both sides of the outer rod 8 are fixedly connected to the support top blocks 20, and the support top blocks 20 are fixedly connected to the handle rod 19 by bolts. An air port 21 is provided between the two support top blocks, and the air port 21 is adapted to the spherical floating weight block 22. The top end of the pressure rod 15 contacts and is not fixedly connected to the support top block 20. The inner side of the lower sampling rod 5 is provided with an L-shaped stratified water storage chamber 10 connected to the L-shaped air inlet 12.

[0019] The lower portion of the lower sampling rod 5 is fixedly connected to the side edge protrusion 6 for supporting the base 1. A sealing gasket 1 is provided between the supporting side plate 7 and the lower sampling rod 5. A sealing gasket 2 is provided between the outer rod 8 and the lower sampling rod 5. The top of the cylindrical floating weight 14 has a pointed structure, and the inner side of the bottom end of the lower sampling rod 5 has an inclined inner slope adapted to the pointed structure.

[0020] The operating principle of this device:

[0021] During the use of the device, when sampling, the sampling plug 11 is inserted into the place to be sampled. After water enters from the L-shaped air inlet 12, due to the pressure, the columnar floating weight 14 floats up, leaving a gap, and the water enters the L-shaped stratified water storage chamber 10. The air pressure in the air storage cavity 16 increases, and the spherical floating weight 22 blocks the air port 21 for easy storage.

[0022] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the scope of protection of the present utility model patent.

Claims

1. A water quality monitoring stratified sampling device, characterized in that: include: The sampling mechanism (4) comprises: a lower sampling rod (5), the bottom end of the lower sampling rod (5) is fixedly connected to a sampling plug (11), an L-shaped air inlet (12) is provided in the middle of the sampling plug (11), a spring (13) is fixedly connected to the upper inner side of the sampling plug (11), a columnar floating weight (14) is fixedly connected above the spring (13), the columnar floating weight (14) is located at the bottom inner side of the lower sampling rod (5), the outer side of the lower sampling rod (5) is in contact with an outer sleeve rod (8), the bottom end of the outer sleeve rod (8) is fixedly connected to a supporting side plate (7) which is in contact with the outer side of the lower sampling rod (5), and the lower sampling rod ( 5) is provided with a pressure rod (15) on the inner side which does not contact the inner wall of the lower sampling rod (5); an air storage cavity (16) is provided above the lower sampling rod (5) and on the inner side of the upper part of the outer rod (8); the top ends of both sides of the outer rod (8) are fixedly connected to the support top blocks (20); the support top blocks (20) are fixedly connected to the handle rod (19) by bolts; an air port (21) is provided between the two support top blocks; the air port (21) is adapted to a spherical floating weight block (22); the top end of the pressure rod (15) contacts but is not fixedly connected to the support top block (20); an L-shaped stratified water storage chamber (10) is provided on the inner side of the lower sampling rod (5) and is connected to the L-shaped air inlet (12).

2. A water quality monitoring stratified sampling device according to claim 1, characterized in that: The lower portion of the lower sampling rod (5) is fixedly connected to support a side edge protrusion (6) placed on the base (1).

3. A water quality monitoring stratified sampling device according to claim 1, characterized in that: A sealing gasket (9) is provided between the supporting side plate (7) and the lower sampling rod (5).

4. A water quality monitoring stratified sampling device according to claim 1, characterized in that: A second sealing gasket (18) is provided between the outer sleeve (8) and the lower sampling rod (5).

5. A water quality monitoring stratified sampling device according to claim 1, characterized in that: The top end of the columnar floating weight (14) is a pointed structure, and the inner side of the bottom end of the lower sampling rod (5) is provided with an inclined inner slope surface adapted to the pointed structure.

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