Chemical sampling instrument with cleaning function

Abstract

The invention discloses a chemical sampling instrument with a cleaning function, which comprises a mounting seat, a mounting groove formed in the mounting seat, a sampling assembly rotationally arranged in the mounting groove, a conveying assembly arranged on the mounting seat, and a cleaning assembly arranged on the mounting seat, the sampling assembly is used for collecting samples or detection data from a water body; the cleaning assembly is used for cleaning the sampling assembly after sampling; and the conveying assembly is used for connecting the sampling assembly with the cleaning assembly. By arranging the sampling assembly composed of the rotating rod, the connecting arm and the sampling head, automatic switching sampling of a plurality of sampling points is achieved, closed cleaning can be automatically conducted on the sampling head and an internal pipeline after sampling is completed, the detection precision is guaranteed, and cross contamination is avoided; the intermittent assembly and the sliding track structure are arranged between the connecting arm and the sampling head, so that the sampling head is stable in action in the rotating, positioning and resetting processes, and the mechanical impact is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of instrument cleaning, and in particular to a chemical sampling instrument with a cleaning function. Background Technology

[0002] With the increasing automation of industrial production, environmental monitoring, and water quality analysis, chemical sampling instruments are widely used in thermal power plants, sewage treatment plants, and water quality monitoring stations to collect samples or monitor chemical parameters in water bodies in real time, such as pH value, conductivity, dissolved oxygen, residual chlorine, turbidity, total phosphorus, and total nitrogen.

[0003] However, during long-term operation, the sampling head, sampling pipe, and related detection components of chemical sampling instruments are easily contaminated by impurities, suspended particles, microorganisms, and chemical deposits in the measured medium. These contaminants can adhere to the sensor probe or the inner wall of the sampling channel, leading to decreased detection sensitivity, slower response speed, data drift, and even blockage of the sampling channel.

[0004] Currently, most chemical sampling instruments still rely primarily on manual cleaning or periodic maintenance to restore their detection performance. Manual cleaning has the following drawbacks: it is frequent and cumbersome, consuming a lot of manpower and maintenance time; it can easily damage precision probes, seals, and other components during disassembly and assembly, shortening the instrument's lifespan; and operators need to come into contact with corrosive or toxic chemical solutions, posing safety hazards. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide a chemical sampling instrument with a cleaning function, which can automatically clean the sampling components after sample collection, reduce manual intervention, improve cleaning efficiency and detection accuracy, and extend the service life of the instrument.

[0006] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a chemical sampling instrument with a cleaning function, comprising: a mounting base, a mounting groove formed on the mounting base, a sampling component rotatably disposed in the mounting groove, a conveying component disposed on the mounting base, and a cleaning component disposed on the mounting base; the sampling component is used to collect samples or detect data from water; the cleaning component is used to clean the sampling component after sampling; and the conveying component is used to connect the sampling component and the cleaning component.

[0007] In a preferred embodiment of the chemical sampling instrument with cleaning function described in this invention: the sampling assembly includes a first pump body disposed on the mounting base, a rotating rod rotatably disposed in the mounting groove, a connecting arm disposed on the rotating rod, the first pump body and the rotating rod being connected through a connecting pipe, a sampling head disposed at the end of the connecting arm, and a solenoid valve disposed on the sampling head; the connecting arm and the rotating rod are both hollow structures and are connected through each other to realize the flow of sample liquid.

[0008] In a preferred embodiment of the chemical sampling instrument with cleaning function described in this invention: the conveying assembly includes a sampling motor connected to the rotating rod, a driving device disposed on the mounting base, a connector connected to the driving device, a cleaning housing connected to the connector, and a sealing sleeve that mates with the outer wall of the sampling head.

[0009] In a preferred embodiment of the chemical sampling instrument with cleaning function according to the present invention: the cleaning assembly includes a second pump body disposed on the mounting base, a waste liquid collection tank opened on the mounting base, the second pump body and the waste liquid collection tank being connected by a connecting hose; a cleaning chamber disposed on the mounting base, a third pump body disposed on the mounting base, an atomizing nozzle disposed within the cleaning housing, and the cleaning chamber, the third pump body and the atomizing nozzle being connected by a delivery pipe.

[0010] In a preferred embodiment of the chemical sampling instrument with cleaning function described in this invention: an intermittent component is further provided between the sampling motor and the connecting arm.

[0011] In a preferred embodiment of the chemical sampling instrument with cleaning function described in this invention: the intermittent component includes an elastic member disposed between the connecting arm and the sampling head, and a sliding member disposed between the elastic member and the mounting groove.

[0012] In a preferred embodiment of the chemical sampling instrument with cleaning function described in this invention: the elastic element includes a sleeve that is slidably sleeved on the end of the connecting arm, and a compression spring disposed between the sleeve and the connecting arm.

[0013] In a preferred embodiment of the chemical sampling instrument with cleaning function described in this invention: the sliding member includes a sliding protrusion disposed on the sleeve, a sliding plate disposed in the mounting groove, a first sliding track and a second sliding track formed on the sliding plate, the first sliding track and the second sliding track being connected through a sliding groove.

[0014] In a preferred embodiment of the chemical sampling instrument with cleaning function described in this invention: a buffer is provided at the bottom of the first sliding track to reduce the impact of intermittent movement.

[0015] In a preferred embodiment of the chemical sampling instrument with cleaning function described in this invention: a rotating baffle is provided in the sliding groove to control the switching path of the sliding protrusion between the first sliding track and the second sliding track.

[0016] The beneficial effects of this invention are as follows: by setting up a sampling assembly consisting of a rotating rod, a connecting arm, and a sampling head, automatic switching sampling of multiple sampling points is realized, significantly improving sampling efficiency; through the linkage between the conveying assembly and the cleaning assembly, the sampling head and its internal pipeline can be automatically and sealed after sampling, ensuring detection accuracy and avoiding cross-contamination; through the intermittent assembly and sliding track structure set between the connecting arm and the sampling head, the sampling head moves smoothly during rotation, positioning, and reset, reducing mechanical impact. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 A schematic diagram of the overall structure of a chemical sampling instrument with a cleaning function is shown. Figure 2 A rear view of the overall structure of a chemical sampling instrument with a cleaning function is shown. Figure 3 A top view of the overall structure of a chemical sampling instrument with a cleaning function is shown; Figure 4 A cross-sectional view of the delivery assembly structure of a chemical sampling instrument with cleaning function is shown; Figure 5 A chemical sampling instrument with cleaning function is shown. Figure 4 Enlarged view at point A; Figure 6 A schematic diagram of the overall structure of a chemical sampling instrument with a cleaning function is shown. Figure 7 An exploded view of the overall structure of a chemical sampling instrument with cleaning function is shown. Figure 8 A chemical sampling instrument with cleaning function is shown. Figure 7 Enlarged view at point B. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0020] Reference Figure 1-8 This embodiment provides a chemical sampling instrument with a cleaning function, including a mounting base 1, a mounting groove 2 formed on the mounting base 1, a sampling component 3 rotatably disposed in the mounting groove 2, a conveying component 4 disposed on the mounting base 1, and a cleaning component 5 disposed on the mounting base 1. The sampling component 3 is used to collect samples or detect data from water; the cleaning component 5 is used to clean the sampling component 3 after sampling; and the conveying component 4 is used to connect the sampling component 3 and the cleaning component 5.

[0021] The sampling assembly 3 includes a first pump body 31 mounted on the mounting base 1, a rotating rod 32 rotatably mounted in the mounting groove 2, a connecting arm 33 mounted on the rotating rod 32, the first pump body 31 and the rotating rod 32 connected by a connecting pipe 34, a sampling head 35 mounted at the end of the connecting arm 33, and a solenoid valve 36 mounted on the sampling head 35. Both the connecting arm 33 and the rotating rod 32 are hollow structures and are connected through each other to allow for the flow of sample liquid. In this embodiment, the first pump body 31 provides negative pressure, allowing the target water sample to be drawn in or transported to the detection unit through the sampling head 35. Four connecting arms 33 are evenly spaced along the circumference of the rotating rod 32, and four sampling heads 35 are respectively mounted at the ends of the connecting arms 33. Sampling is achieved through independent control of the solenoid valve 36. The front end of the sampling head 35 is equipped with an anti-clogging filter or a microporous filter cover to prevent suspended particulate matter from entering the internal channel. This structure enables multi-point cyclic sampling, improving detection efficiency.

[0022] The conveying assembly 4 includes a sampling motor 41 connected to the rotating rod 32, a drive device 42 mounted on the mounting base 1, a connector 43 connected to the drive device 42, a cleaning housing 44 connected to the connector 43, and a sealing sleeve 45 that mates with the outer wall of the sampling head 35. In this embodiment, the sampling motor 41 drives the rotating rod 32 to rotate intermittently, causing each sampling head 35 to move sequentially to a sampling or cleaning position. The drive device 42 employs an electric push rod or pneumatic cylinder structure to push the cleaning housing 44 to reciprocate along the mounting groove 2, thereby ensuring that the sealing sleeve 45 tightly fits or separates from the sampling head 35, forming a closed cleaning space. The inner wall of the cleaning housing 44 may be provided with a corrosion-resistant coating or a rubber sealing ring to enhance sealing and chemical corrosion resistance.

[0023] The cleaning assembly 5 includes a second pump body 51 mounted on the mounting base 1, a waste liquid collection tank 52 located on the mounting base 1, and the second pump body 51 connected to the waste liquid collection tank 52 via a connecting hose 53; a cleaning chamber 54 mounted on the mounting base 1; a third pump body 55 mounted on the mounting base 1; and an atomizing nozzle 56 located within the cleaning housing 44. The third pump body 55 and the atomizing nozzle 56 are connected via a delivery pipe 57. In this embodiment, the third pump body 55 pressurizes the cleaning fluid in the cleaning chamber 54 and delivers it to the atomizing nozzle 56. After atomization through the nozzle, a high-pressure, fine liquid flow is formed, which thoroughly rinses the outer surface and internal cavities of the sampling head 35, effectively removing adhering impurities, microorganisms, or sediments. After cleaning, the second pump body 51 is activated, discharging the waste liquid containing contaminants into the waste liquid collection tank 52 via the hose for centralized treatment.

[0024] An intermittent component 6 is also provided between the sampling motor 41 and the connecting arm 33. In this embodiment, it is used to control the step-by-step rotation of the rotating rod 32 to achieve automatic switching of the sampling head 35.

[0025] The intermittent component 6 includes an elastic element 61 disposed between the connecting arm 33 and the sampling head 35, and a sliding element 62 disposed between the elastic element 61 and the mounting groove 2. The elastic element 61 includes a sleeve 611 slidably fitted onto the end of the connecting arm 33, and a compression spring 612 disposed between the sleeve 611 and the connecting arm 33. The sliding element 62 includes a sliding protrusion 621 disposed on the sleeve 611, a sliding plate 622 disposed in the mounting groove 2, and a first sliding track 623 and a second sliding track 624 formed on the sliding plate 622. The first sliding track 623 and the second sliding track 624 are connected by a sliding groove 625. The two ends of the sliding groove 625 are respectively connected to the bottom of the first sliding track 623 and the bottom of the second sliding track 624. The compression spring 612 allows the sampling head 35 to extend and slide on the connecting arm 33.

[0026] A buffer 626 is provided at the bottom of the first sliding track 623 to mitigate the impact of intermittent movement. In this embodiment, the buffer 626 includes a buffer groove formed at the bottom of the first sliding track 623, a buffer plate slidably disposed in the sliding groove 625, and a buffer spring disposed at the bottom of the buffer plate and the buffer groove. The buffer plate can be a rubber pad or a silicone block, which absorbs excess kinetic energy when the sliding protrusion 621 touches the bottom, reducing vibration and extending the life of the mechanism.

[0027] A rotating baffle 627 is provided in the sliding groove 625 to control the switching path of the sliding protrusion 621 between the first sliding track 623 and the second sliding track 624.

[0028] Working principle: When the device is in sampling mode, the corresponding sampling head 35 is aligned with the target water body or detection point. The solenoid valve 36 inside the sampling head opens, and the first pump body 31 starts working, drawing the water sample through the sampling head 35. The sample liquid is then transported to the detection unit or chemical analysis module through the hollow connecting arm 33 and the rotating rod 32, realizing sample collection and data detection.

[0029] After one sampling is completed, the sampling head 35 needs to be cleaned. The sampling motor 41 rotates, and the connecting arm 33 rotates to slide the sliding protrusion 621 into the first sliding track 623, so that the cleaning housing 44 is aligned with the sampling head 35 to be cleaned. When the sliding protrusion 621 can contact the bottom of the first sliding track 623, it is buffered by the buffer 626. The drive device 42 in the conveying assembly 4 is activated, pushing the cleaning housing 44 forward along the mounting groove 2, so that the sealing sleeve 45 at the front end of the cleaning housing 44 forms a sealed connection with the outer wall of the sampling head 35, forming a closed cleaning chamber. Then, the sampling head 35 is pushed to move, so that the sliding protrusion 621 moves in the sliding groove 625, passes through the rotating baffle 627 and enters the second sliding track 624. At this time, the third pump 55 in the cleaning assembly 5 is started, and the cleaning liquid in the cleaning box 54 is sent to the atomizing nozzle 56 through the conveying pipe 57. The atomizing nozzle 56 sprays a high-pressure atomized liquid stream into the cleaning housing 44 to thoroughly rinse the sampling head 35 and its inner cavity, thereby removing attached impurities, deposits and microorganisms.

[0030] After cleaning, the second pump 51 starts, discharging the waste liquid generated during cleaning into the waste liquid collection tank 52 via the connecting hose 53. After cleaning, the cleaning housing 44 retracts. Due to the obstruction of the baffle, the sampling head 35 remains in the second sliding track 624. The sampling motor 41 rotates, and the sampling head 35 slides out of the second sliding track 624, and the compression spring 612 returns to its original position.

[0031] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A chemical sampling instrument with cleaning function, characterized in that: The utility model relates to a sampling device, including the mounting seat (1), the installation groove (2) that opens in the mounting seat (1), the sampling assembly (3) that rotates in the installation groove (2) is set up, the conveying assembly (4) that sets up on the mounting seat (1), and the cleaning assembly (5) that sets up on the mounting seat (1), the sampling assembly (3) is used to gather sample or detect data from water body; The cleaning assembly (5) is used for cleaning the sampling assembly (3) after sampling; The conveying assembly (4) is used for connecting the sampling assembly (3) and the cleaning assembly (5).

2. The chemical sampling instrument with cleaning function according to claim 1, characterized in that: The sampling assembly (3) includes the first pump body (31) that sets up on the mounting seat (1), the rotating rod (32) that rotates in the installation groove (2), the connecting arm (33) that sets up on the rotating rod (32), the first pump body (31) is connected with the rotating rod (32) through the connecting pipeline (34), the sampling head (35) that sets up on the connecting arm (33) end, and the electromagnetic valve (36) that sets up on the sampling head (35); The connecting arm (33) and the rotating rod (32) are hollow structure and through connection, to realize the flow of sample liquid.

3. The chemical sampling instrument with cleaning function according to claim 2, characterized in that: The conveying assembly (4) includes the sampling motor (41) that is connected with the rotating rod (32), the driving device (42) that sets up on the mounting seat (1), the connecting head (43) that is connected with the driving device (42), the cleaning shell (44) that is connected with the connecting head (43), and the sealing sleeve (45) that cooperates with the sampling head (35) outer wall.

4. The chemical sampling instrument with cleaning function according to claim 3, characterized in that: The cleaning assembly (5) includes the second pump body (51) that sets up on the mounting seat (1), the waste liquid collection groove (52) that opens in the mounting seat (1), the second pump body (51) is connected with the waste liquid collection groove (52) through the connecting hose (53); The cleaning box body (54) that sets up on the mounting seat (1), the third pump body (55) that sets up on the mounting seat (1), the atomizing nozzle (56) that sets up in the cleaning shell (44); The cleaning box body (54), the third pump body (55) and the atomizing nozzle (56) are connected through the conveying pipe (57).

5. The chemical sampling instrument with cleaning function according to claim 2, characterized in that: The intermittent assembly (6) is further arranged between the sampling motor (41) and the connecting arm (33).

6. The chemical sampling instrument with cleaning function according to claim 5, characterized in that: The intermittent assembly (6) includes the elastic member (61) that is arranged between the connecting arm (33) and the sampling head (35), and the sliding member (62) that is arranged between the elastic member (61) and the installation groove (2).

7. The chemical sampling instrument with cleaning function according to claim 6, characterized in that: The elastic member (61) includes the sleeve (611) that is sleeved on the end of the connecting arm (33), and the compression spring (612) that is arranged between the sleeve (611) and the connecting arm (33).

8. The chemical sampling instrument with cleaning function according to claim 7, characterized in that: The sliding piece (62) comprises a sliding protrusion (621) arranged on the sleeve (611), a sliding plate (622) arranged in the mounting groove (2), a first sliding track (623) and a second sliding track (624) opened on the sliding plate (622), and the first sliding track (623) and the second sliding track (624) are communicated through a sliding groove (625).

9. The chemical sampling instrument with cleaning function according to claim 8, characterized in that: A buffer (626) is arranged at the bottom of the first sliding track (623) and used for reducing the impact of intermittent movement.

10. The chemical sampling instrument with cleaning function according to claim 9, characterized in that: A rotating baffle (627) is arranged in the sliding groove (625) and used for controlling the switching path of the sliding protrusion (621) between the first sliding track (623) and the second sliding track (624).

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