Water quality sampling equipment

Abstract

The utility model relates to the technical field of water quality sampling, in particular to water quality sampling equipment which comprises an extraction part used for extracting a water body sample, the extraction part comprises an upper extraction cylinder and a bottom sealing cylinder installed at the bottom of the upper extraction cylinder in a threaded mode, and the bottom sealing cylinder is used for containing a sampling pipe. The water quality sampling equipment further comprises an extraction pipe and an exhaust pipe which are respectively arranged on the upper extraction cylinder, and a water body filtering box arranged at one end of the extraction pipe. According to the utility model, the height of the communication part of the extraction pipe and the shell is designed to be lower than that of the communication part of the exhaust pipe and the shell, so that air between the piston and the bottom sealing cylinder is pushed and pressed between the hard brush plate and the inner top of the shell when the filter plate sucks water and is blocked; the hard brush plate is pushed to move downwards, sundries in meshes on the filter plate are dredged, redundant air can be exhausted in time, the hard brush plate is reset, and therefore when the filter screen is blocked, the filter screen does not need to be disassembled and cleaned, and the blocking problem of the filter screen can be solved in time.

Description

Technical Field

[0001] This utility model relates to the field of water quality sampling technology, and in particular to a water quality sampling device. Background Technology

[0002] All water quality testing requires on-site sampling by technicians using sampling equipment. Due to significant differences in the environment of different water bodies—some with no obstructions, others with numerous floating objects, and still others containing a large amount of suspended matter—existing water quality sampling equipment uses external filters at the sampling port to isolate algae and other debris during sampling. However, these filters are easily clogged by suspended matter, requiring frequent cleaning and significantly impacting sampling efficiency.

[0003] Existing patent application number 202320551083.8 discloses a water sampling device with a removable filter screen installed on the outside of the third sampling section. This filter screen is designed to isolate and filter out algae and other debris in the water during sampling, preventing these impurities from contaminating the sampled water and affecting subsequent water quality testing results. However, the aforementioned prior art still suffers from the same technical problems during water sampling. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a water quality sampling device to solve the problem that the filter screen is easily clogged by suspended solids in the water, the cleaning frequency is relatively high, and the sampling efficiency is greatly affected.

[0005] To achieve the above objectives, this utility model provides a water sampling device, including an extraction section for extracting water samples. The extraction section includes an upper extraction cylinder and a bottom sealing cylinder threaded to the bottom of the upper extraction cylinder. The bottom sealing cylinder is used to hold a sampling tube. The water sampling device further includes:

[0006] The extraction pipe and the exhaust pipe are respectively provided on the upper extraction cylinder.

[0007] A water filter box is located at one end of the extraction pipe, and one end of the exhaust pipe is located on the water filter box.

[0008] One-way valves are provided on both the extraction pipe and the exhaust pipe.

[0009] A filter plate that can be detachably installed at the bottom of the water filter box.

[0010] A filtration and unblocking section is provided inside the water filter box, which is used to unblock debris clogging the filter plate.

[0011] Preferably, the connection between the extraction pipe and the water filter box is lower than the connection between the exhaust pipe and the water filter box.

[0012] Preferably, the filter unblocking section includes:

[0013] A transition cavity is provided within the water filter box, and several support columns are vertically fixed within the transition cavity.

[0014] A rigid brush plate is slidably fitted inside the water filter box, and one end of the support column is inserted and connected to a guide hole on the rigid brush plate.

[0015] A tension spring is located inside the transition cavity between the top and the hard brush plate.

[0016] An exhaust trough is provided between the outside of the water filter box and the transition chamber, and one end of the exhaust trough is provided with a one-way exhaust valve.

[0017] Preferably, the hard brush plate is located between the two one-way valves, and the bottom of the hard brush plate is evenly covered with steel bristles.

[0018] Preferably, the distance between the end of the exhaust groove located in the transition cavity and the filter plate is less than the thickness of the hard brush plate.

[0019] Preferably, the tension spring is sleeved on the top of the support column, and the two ends of the tension spring are respectively fixed to the top of the transition cavity and the top of the hard brush plate.

[0020] Preferably, the extraction unit further includes:

[0021] Two limiting rings are fixed inside the upper drawing cylinder.

[0022] A piston that is slidably fitted inside the upper cylinder.

[0023] A push-pull rod is fixed to the top of the piston, and one end of the push-pull rod is inserted and connected to a top through hole located at the top of the upper drawing cylinder.

[0024] Preferably, the piston is located between the two limiting rings, and the end of the extraction pipe and the exhaust pipe near the upper extraction cylinder is located between the bottom sealing cylinder and the limiting ring near the bottom sealing cylinder.

[0025] The beneficial effects of this utility model are as follows: By designing the height of the connection between the extraction pipe and the outer shell to be lower than the height of the connection between the exhaust pipe and the outer shell, when the filter plate becomes clogged during water extraction, air can be introduced between the hard brush plate and the top of the outer shell by pushing the air between the piston and the bottom seal cylinder. This pushes the hard brush plate down to contact the filter plate, clearing the debris clogging the mesh of the filter plate. At this time, the top of the hard brush plate is lower than the lower edge of the exhaust groove, and excess gas is discharged. Finally, it is reset under the elastic force of the tension spring. In this way, the efficiency of water sampling can be improved, and the problem of filter clogging can be solved in a timely and efficient manner without disassembly and cleaning. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0028] Figure 2 This is the front view of the present invention;

[0029] Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ;

[0030] Figure 4 This is a partial front sectional view of the present invention.

[0031] The diagram is marked as follows:

[0032] 1. Extraction section; 11. Upper extraction cylinder; 12. Limiting ring; 13. Piston; 14. Push-pull rod; 15. Top perforation; 16. Bottom sealing cylinder; 2. Filter plate; 3. Extraction pipe; 4. Exhaust pipe; 5. One-way valve; 6. Filter unblocking section; 61. One-way exhaust valve; 62. Transition chamber; 63. Hard brush plate; 64. Support column; 65. Guide hole; 66. Tension spring; 67. Exhaust groove; 7. Water filter box. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0034] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] like Figures 1 to 4 As shown, a water sampling device includes an extraction section 1 for extracting water samples. The extraction section 1 includes an upper extraction cylinder 11 and a bottom sealing cylinder 16 threadedly installed at the bottom of the upper extraction cylinder 11. The bottom sealing cylinder 16 is used to hold a sampling tube. The water sampling device also includes:

[0036] The extraction pipe 3 and the exhaust pipe 4 are respectively installed on the upper extraction cylinder 11.

[0037] A water filter box 7 is located at one end of the extraction pipe 3, and one end of the exhaust pipe 4 is located on the water filter box 7.

[0038] One-way valve 5 is provided on both the extraction pipe 3 and the exhaust pipe 4. The two one-way valves 5 are located between the extraction pipe 3 and the water filter box 7, and between the exhaust pipe 4 and the water filter box 7, respectively.

[0039] The filter plate 2 is detachably installed at the bottom of the water filter box 7.

[0040] The filter unblocking part 6 is located inside the water filter box 7. The filter unblocking part 6 is used to clear the debris blocking the filter plate 2.

[0041] like Figure 2 As shown, the connection between the extraction pipe 3 and the water filter box 7 is lower than the connection between the exhaust pipe 4 and the water filter box 7. This design can effectively utilize the excess air inside the extraction section 1, and through compression and pressurization, drive the filter unblocking section 6 to operate, clean and maintain the high-efficiency filtration state of the filter plate 2. It can also avoid mutual interference between the extraction pipe 3 and the exhaust pipe 4, which would affect the water sampling efficiency.

[0042] like Figure 3 and Figure 4 As shown, the filter and unblocking section 6 includes:

[0043] A transition cavity 62 is provided inside the water filter box 7, and several support columns 64 are vertically fixed inside the transition cavity 62.

[0044] The rigid brush plate 63 is slidably fitted inside the water filter box 7, and one end of the support column 64 is inserted and connected to the guide hole 65 on the rigid brush plate 63.

[0045] A tension spring 66 is located between the top of the transition cavity 62 and the hard brush plate 63.

[0046] An exhaust trough 67 is located between the outside of the water filter box 7 and the transition cavity 62, and a one-way exhaust valve 61 is provided at one end of the exhaust trough 67.

[0047] The hard brush plate 63 is located between the two one-way valves 5, and the bottom of the hard brush plate 63 is evenly covered with steel bristles.

[0048] The distance between the end of the exhaust groove 67 located in the transition cavity 62 and the filter plate 2 is less than the thickness of the hard brush plate 63.

[0049] The tension spring 66 is sleeved on the top of the support column 64, and the two ends of the tension spring 66 are respectively fixed to the top of the transition cavity 62 and the top of the hard brush plate 63.

[0050] This design allows excess air in the extraction section 1 to be compressed and pressurized to the space between the top of the hard brush plate 63 and the inside of the water filter box 7, so as to drive the hard brush plate 63 to move down until the top of the hard brush plate 63 is lower than the lower edge of the exhaust groove 67. This allows excess gas to be discharged, so that the elastic force of the tension spring 66 can pull the hard brush plate 63 back up and reset. During this process, the steel bristles at the bottom of the hard brush plate 63 will push the debris blocking the mesh of the filter plate 2 toward the outside of the water filter box 7.

[0051] like Figures 1 to 3 As shown, the extraction unit 1 also includes:

[0052] Two limiting rings 12 are fixed inside the upper drawing cylinder 11.

[0053] The piston 13 is slidably sleeved inside the upper suction cylinder 11.

[0054] A push-pull rod 14 is fixed to the top of the piston 13, and one end of the push-pull rod 14 is inserted and connected to the top through hole 15 located at the top of the upper tube 11.

[0055] The piston 13 is located between the two limiting rings 12, and the end of the extraction pipe 3 and the exhaust pipe 4 near the upper extraction cylinder 11 is located between the bottom sealing cylinder 16 and the limiting ring 12 near the bottom sealing cylinder 16.

[0056] This design limits the movement range of the piston 13 by two limiting rings 12, thus enabling quantitative sample extraction. It also prevents the piston 13 from contacting one end of the extraction tube 3 when it moves down, protecting the extraction tube 3. Furthermore, it prevents the piston 13 from blocking the ports of the extraction tube 3 and the exhaust pipe 4, allowing water samples to be extracted by pulling and pushing.

[0057] Working principle: Before water sampling, the water filter box 7 is placed in the water to be sampled. By pulling the push rod 14, the piston 13 moves synchronously, creating a negative pressure between the piston 13 and the bottom sealing cylinder 16. This opens the one-way valve 5 at one end of the extraction tube 3, allowing water to be drawn into the sampling tube placed inside the bottom sealing cylinder 16. After each water sampling operation, pushing the push rod 14 resets the piston 13, compressing and pressurizing the air between the piston 13 and the bottom sealing cylinder 16. This opens the one-way valve 5 at one end of the exhaust pipe 4, allowing excess air in the extraction section 1 to be discharged between the hard brush plate 63 and the top of the water filter box 7, facilitating the use of air... Press down to move the hard brush plate 63 downwards until the top of the hard brush plate 63 is lower than the lower edge of the vent groove 67. This will release excess gas, allowing the tension spring 66 to pull the hard brush plate 63 back up. During this process, the steel bristles at the bottom of the hard brush plate 63 will push the debris clogging the mesh of the filter plate 2 towards the outside of the water filter box 7. If the extraction resistance increases significantly during water sample extraction, the above operation can be repeated until the water sample volume reaches the standard. This eliminates the need for disassembly and cleaning when the filter plate 2 becomes clogged, and allows for timely and efficient resolution of filter plate 2 clogging issues.

[0058] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0059] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water quality sampling device comprising an extraction part (1) for extracting a water sample, said extraction part (1) comprising an upper extraction cylinder (11) and a bottom sealing cylinder (16) threadedly mounted at the bottom of said upper extraction cylinder (11), said bottom sealing cylinder (16) being intended to contain a sampling tube, characterized in that, The water quality sampling device further comprises: a suction pipe (3) and an exhaust pipe (4) respectively arranged on the upper suction cylinder (11); a water body filter box (7) arranged at one end of the suction pipe (3), and one end of the exhaust pipe (4) arranged on the water body filter box (7); a one-way valve (5) arranged on the suction pipe (3) and the exhaust pipe (4); a filter plate (2) detachably arranged at the bottom of the water body filter box (7); a filter dredging part (6) arranged in the water body filter box (7), which is used for dredging the blocked sundries on the filter plate (2).

2. The water quality sampling apparatus of claim 1, wherein The connection between the suction pipe (3) and the water body filter box (7) is lower than the connection between the exhaust pipe (4) and the water body filter box (7).

3. The water quality sampling apparatus of claim 2, wherein, The filter dredging part (6) comprises: a transition cavity (62) arranged in the water body filter box (7), a plurality of support columns (64) vertically fixed in the transition cavity (62); a hard brush plate (63) slidingly sleeved in the water body filter box (7), one end of the support column (64) penetratingly connected with a guide hole (65) arranged on the hard brush plate (63); a tension spring (66) arranged between the top of the transition cavity (62) and the hard brush plate (63); an exhaust groove (67) arranged between the outside of the water body filter box (7) and the transition cavity (62), one end of the exhaust groove (67) provided with a one-way exhaust valve (61).

4. The water quality sampling apparatus of claim 3, wherein The hard brush plate (63) is located between the two one-way valves (5), and the bottom of the hard brush plate (63) is uniformly densely provided with steel brush hairs.

5. The water quality sampling apparatus of claim 4, wherein The distance between one end of the exhaust groove (67) located in the transition cavity (62) and the filter plate (2) is less than the thickness of the hard brush plate (63).

6. The water quality sampling apparatus of claim 5, wherein The top end of the tension spring (66) is sleeved outside the support column (64), and both ends of the tension spring (66) are fixedly arranged at the top of the transition cavity (62) and the top of the hard brush plate (63) respectively.

7. The water quality sampling apparatus of claim 1, wherein The suction part (1) further comprises: two limit rings (12) fixed in the upper suction cylinder (11); a piston (13) slidingly sleeved in the upper suction cylinder (11); a push-pull rod (14) fixed at the top of the piston (13), one end of the push-pull rod (14) penetratingly connected with a top through hole (15) arranged at the top of the upper suction cylinder (11).

8. The water quality sampling apparatus of claim 7, wherein, The piston (13) is located between the two limit rings (12), and one end of the suction pipe (3) and the exhaust pipe (4) close to the upper suction cylinder (11) is located between the bottom sealing cylinder (16) and the limit ring (12) close to the bottom sealing cylinder (16).

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