Modularized water quality automatic sampler

Abstract

The utility model discloses a modularized water quality automatic sampler which comprises a sampler body, and a sampling container, a sample reserving device and a central control system which are arranged in the sampler body. The sampling container is arranged to be of an AB double-barrel structure, and a sample injection control mechanism is arranged to intermittently collect water samples for a barrel A; water samples in different time periods are collected through multiple times of sampling and uniformly mixed and then sent for detection, so that the detection result is more comprehensive and accurate, the water samples in the barrel A can be immediately input into the barrel B through the first valve body after being collected, and the barrel B supplies water samples to various detection instruments, so that the detection can be carried out continuously; after detection is completed, a water sample with problems can be input into the sample reserving device to be stored, later manual detection is facilitated, the whole sampling, sample supplying and sample reserving process is automatically carried out, the automation degree is high, manual labor intensity is completely automatically reduced, all parts in the sampler body are modularly designed, and mounting, dismounting and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality detection, in particular to the technical field of modular water quality automatic samplers. Background Art

[0002] The automatic water sampler is used for the import and export of pollution sources and sewage treatment plants, and is connected with online monitors such as COD, ammonia nitrogen, and heavy metals to provide uninterrupted mixed water samples for online monitoring equipment of pollution sources, so as to achieve the instrument of retaining samples when exceeding the standard. The working principle of the automatic water sampler is that under the control of the instrument, the water sample is quantitatively collected into the designated sampling bottle by the sample retention pump according to the set program, and is refrigerated at low temperature for laboratory analysis or online instrument analysis. According to the sampling function, it can be divided into flow proportional sampling, timed sampling, and remote control sampling, etc. According to whether the sample is stored in bottles, it can be divided into bottled water quality samplers and mixed water quality samplers. Under the control of the controller, the sample retention pump is used to collect the water sample into the instrument, and the water sample is sent to the designated sampling bottle through the instrument distribution system. The water sample temperature is constant at 4°C (±2°C) through the constant temperature system, thereby completing the automatic collection, automatic distribution and constant temperature storage process of the water sample.

[0003] When the automatic water quality sampler is working, it first draws the water sample into the water collection bottle (cache sample supply bottle). The water collection bottle has a sample inlet, a sample supply port, a sample retention port, an overflow port and a discharge port. The online monitoring instrument obtains the water sample from the water collection bottle (the sampler sample supply pump actively supplies the sample or the online instrument automatically extracts the water sample). After the online monitoring instrument (COD, ammonia nitrogen, total phosphorus, total nitrogen, etc.) analyzes the water sample, it sends a signal whether it exceeds the standard, and controls the retention or discharge of the sample through the electric control valve. When the analysis and detection cycle of some online monitoring and analysis instruments is relatively long (for example, 30 minutes) and the required mixed sampling cycle is relatively short (for example, 10 minutes), adding a water collection bottle to switch between them can meet the sample supply and retention needs. In addition, existing automatic water quality samplers mostly perform single direct sampling, and do not collect water samples multiple times and at different time periods for even mixing before sending them for testing. The test results are rather one-sided. The water sample storage devices are not divided into A and B barrels. When the sampling process uses the same barrel, the sample is supplied from the sample supply port to the testing equipment before it is completely mixed, resulting in inaccurate test results. Summary of the invention

[0004] The purpose of the utility model is to solve the problems in the prior art and propose a modular water quality automatic sampler. Through multiple sampling, water samples are collected at different time periods and mixed evenly before sending the samples for testing, so that the test results are more comprehensive and accurate. When the water sample in bucket A is collected, it can be immediately input into bucket B through the first valve body. Bucket B supplies water samples for various testing instruments. At the same time, the first valve body is closed and bucket A can continue to collect water samples, avoiding the situation that water samples cannot be collected during the water sample testing process, and the testing can be carried out uninterruptedly.

[0005] To achieve the above-mentioned purpose, the utility model proposes a modular water quality automatic sampler, comprising a sampler body, a sampling container arranged in the sampler body, a sample retention device connected to the sampling container and used to store samples, and a central control system connected to the sampling container and the sample retention device. The sampling container and the sample retention device are both detachable and arranged in the sampler body. The sampling container comprises an A barrel and a B barrel. The output end of the A barrel is connected to the input end of the B barrel through a first valve body. The first output end of the B barrel is connected to the sample retention device, and the second output end is provided with a sample discharge pipeline, and the sample discharge pipeline is provided with a second valve body.

[0006] The input end of barrel A is provided with a sampling control mechanism for controlling the input of the water sample to be tested, and the central control system controls the gap opening and closing of the sampling control mechanism.

[0007] Preferably, the sample retention device comprises a sample inlet tube and a sample outlet tube connected to the B barrel, the sample inlet tube and the sample outlet tube are connected via a rotary joint, one end of the sample outlet tube is connected to the rotary joint, and the other end is provided with a sample outlet, a rotating drive mechanism for driving the sample outlet tube to rotate around the rotary joint is provided next to the rotary joint, the sample retention device also comprises a plurality of sample retention bottles arranged in a circular array around the center of the rotary joint, the sample retention bottle is provided with an input port corresponding to the sample outlet, and the rotary drive mechanism drives the sample outlet tube to rotate to any angle so that the sample outlet corresponds to the input port of any of the sample retention bottles.

[0008] Preferably, a sample retaining pump is provided between the sample inlet tube and the B barrel.

[0009] Preferably, a refrigerating chamber is further provided in the sampler body, the sample retaining device is arranged in the refrigerating chamber, and a refrigerating mechanism corresponding to the refrigerating chamber is provided in the sampler body.

[0010] Preferably, both the barrel A and the barrel B are provided with a stirrer for stirring the water samples therein.

[0011] Preferably, the injection control mechanism is a pump body arranged at the input end of barrel A.

[0012] Preferably, it further comprises a drug administration pump, wherein the input end of the drug administration pump is connected to the drug administration container, and the output end of the drug administration pump is connected to the B barrel.

[0013] Preferably, the sampler body is provided with an online water sample detection instrument and a sample supply pump, the input end of the sample supply pump is connected to the B barrel, and the output end is connected to the online water sample detection instrument.

[0014] The utility model discloses a modular automatic water quality sampler with beneficial effects: the utility model configures the sampling container as an AB double barrel structure, and arranges a sampling control mechanism to intermittently collect water samples for barrel A, collects water samples at different time periods through multiple samplings and mixes them evenly before sending the samples for testing, so that the test results are more comprehensive and accurate; when the water sample collection in barrel A is completed, it can be immediately input into barrel B through the first valve body, and barrel B supplies water samples for various testing instruments; at the same time, the first valve body is closed, and barrel A can continue to collect water samples, so as to avoid the situation that water samples cannot be collected during the water sample testing process; the testing can be carried out uninterruptedly, and after the testing is completed, the problematic water samples can be input into the sample retention device for storage, so as to facilitate the later manual testing; the entire sampling, sample supplying and sample retention processes are automated, with a high degree of automation, and the labor intensity is reduced and is completely automated; all components in the sampler body are modularly designed, which is convenient for installation and disassembly, and convenient for maintenance.

[0015] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a three-dimensional structural schematic diagram of a modular automatic water quality sampler.

[0017] Figure 2 The utility model is a rear-view stereoscopic structural schematic diagram of a modular automatic water quality sampler.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the sampling container.

[0019] Figure 4 The utility model is a front view schematic diagram of the internal structure of a modular automatic water quality sampler.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the sample retention device.

[0021] Figure 6 It is a schematic diagram of the main structure of the sample retention device.

[0022] Figure 7 yes Figure 6 Schematic diagram of the AA section structure.

[0023] Figure 8 yes Figure 6 Schematic diagram of the AA section structure.

[0024] in:

[0025] 1- sampler body; 2- barrel A; 3- barrel B; 4- second valve body; 5- agitator; 7- sample injection control mechanism; 8- dosing pump; 9- sample supply pump; 11- cold storage room; 61- sample injection tube; 62- sample outlet tube; 63- rotary joint; 64- sample bottle; 65- sample pump; 621- sample outlet. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0027] In the description of the present utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. 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 utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected 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. Embodiment 1

[0030] See also Figure 1-Figure 8 The utility model discloses a modular automatic water quality sampler, comprising a sampler body 1, a sampling container arranged in the sampler body 1, a sample retention device connected to the sampling container and used to store samples, and a central control system controlled and connected to the sampling container and the sample retention device. The sampling container and the sample retention device are of modular design and can be detachably arranged in the sampler body 1. The sampling container comprises an A barrel 2 and a B barrel 3, and the A barrel 2 is arranged on the upper side of the B barrel 3. The output end of the A barrel 2 is connected to the input end of the B barrel 3 through a first valve body 4. The input end of the A barrel 2 is used to input water samples. The first output end of the B barrel 3 is connected to the sample retention device, and the second output end is provided with a sample discharge pipeline. The sample discharge pipeline is provided with a second valve body 4. The input end of the A barrel 2 is provided with a sample injection control mechanism 7 for controlling the input of the water sample to be tested. A time module is provided in the central control system, and the central control system controls the gap opening and closing of the sample injection control mechanism 7 through the time module. In this embodiment, the sampling container is set as an AB double barrel structure, and a sampling control mechanism 7 is set to intermittently collect water samples for barrel A 2. Water samples at different time periods are collected through multiple sampling and mixed evenly before sending the samples for testing, so that the test results are more comprehensive and accurate. When the water sample collection of barrel A 2 is completed, it can be immediately input into barrel B 3 through the first valve body 4. Bucket B supplies water samples for various testing instruments. At the same time, the first valve body 4 is closed, and barrel A 2 can continue to collect water samples to avoid the situation where water samples cannot be collected during the water sample testing process. The test can be carried out uninterruptedly. After the test is completed, the problematic water samples can be input into the sample retention device for storage, which is convenient for later manual testing. The entire sampling, sample supply, and sample retention process is automated with a high degree of automation, which reduces the intensity of manual labor and is completely automated.

[0031] Preferably, the sampling container, sample retention device, pumps and other components in the sampler body 1 are modularly configured to facilitate installation and disassembly and maintenance. Embodiment 2

[0032] See also Figure 5 , Figure 6 , Figure 7 and Figure 8The sample retaining device includes a sample inlet tube 61 and a sample outlet tube 62 connected to the B barrel 3. A sample retaining pump 65 is also provided between the sample inlet tube 61 and the B barrel 3. The water sample in the B barrel 3 is transported to the sample retaining device through the sample retaining pump 65. The sample inlet tube 1 and the sample outlet tube 62 are connected through a rotary joint 63. One end of the sample outlet tube 62 is connected to the rotary joint 63, and the other end is provided with a sample outlet 621. A rotating shaft for driving the sample outlet tube 62 to rotate around the rotary joint 63 is provided next to the rotary joint 63. The driving mechanism includes a stepping motor and a plurality of transmission gears. The stepping motor controls the rotating joint 63 and the sample outlet tube 62 to rotate around the axis of the rotating joint 63. The sample retaining device also includes 24 sample retaining bottles 64 arranged in a circular array around the center of the rotating joint 63. The sample retaining bottles 64 are provided with input ports corresponding to the sample outlet 621. The rotating driving mechanism drives the sample outlet tube 62 to rotate to any angle so that the sample outlet 621 corresponds to the input port of any sample retaining bottle 64. In this embodiment, the rotating joint 63, the sample outlet tube 62 and the sample retaining bottle 64 are matched, and the rotating joint 63 and the sample outlet tube 62 are driven by the rotating driving mechanism to rotate around the axis of the rotating joint 63, so that the sample outlet 621 can be switched to match the input port of any sample retaining bottle 64, which is convenient for sample retention and has a simple and reasonable structure.

[0033] See also Figure 4 The sampler body 1 is further provided with a refrigerating chamber 11, the sample bottle 64 is arranged in the refrigerating chamber 11, and the sampler body 1 is provided with a refrigerating mechanism corresponding to the refrigerating chamber 11. The water sample in the sample bottle 64 is refrigerated and preserved by the refrigerating chamber 11, thereby improving the sample preservation quality and the sample accuracy.

[0034] See also Figure 3 The A bucket 2 and the B bucket 3 are both provided with a stirrer 5 for stirring the water samples therein. The stirrer 5 can mix the internal water samples, so that the water samples collected in different time periods in the A bucket 2 are mixed evenly, and the water samples in the B bucket 3 can be fully mixed with the reagents, thereby improving the detection accuracy.

[0035] See also Figure 2 , and also includes a dosing pump 8, the input end of the dosing pump 8 is connected to the sulfuric acid container, and the output end is connected to the B barrel 3. The dosing pump 8 is used to transport reagents into the B barrel 3 for detection, thereby realizing automatic dosing.

[0036] See also Figure 2The sampler body 1 is provided with a water sample online detection instrument and a sample supply pump 9. The input end of the sample supply pump 9 is connected to the B bucket 3, and the output end is connected to the water sample online detection instrument. The sample supply pump 9 is used to transport the water sample in the B bucket 3 to the water sample online detection instrument for detection. After the detection is completed, the central control system selects to transport the water sample in the B bucket 3 to the sample retention device for retention or discharge it through the sample discharge pipeline according to the detection result.

[0037] See also Figure 2 , and also includes a collection pump 10, the input end of the collection pump 10 is directly connected to the water sample collection position, and the input end is connected to the input end of the sample retention device. The external detection device is used to detect whether the pH value of the water sample exceeds the standard, and is connected to the central control system of the machine. If it exceeds the standard, the water sample is directly collected through the collection pump 10, and the sample is retained in the sampling bottle in the chassis.

[0038] See also Figure 2 , also includes a comparison pump 12.

[0039] Preferably, a pump plate 13 is provided in the sampler body 1, and all pumps are fixed on the pump plate 13, which is convenient for maintenance.

[0040] Preferably, a card swiping sensing area 14 is also provided on the sampler body 1, and a sensing element is installed under the sensing area. The sampler body 1 can be controlled to perform a series of operations, such as turning on the machine, opening the door, etc., by swiping the card.

[0041] Preferably, the side surfaces and the front arc surface of the sampler body 1 are provided with heat dissipation holes, which can increase the heat dissipation effect in the control compartment and the compressor installation compartment.

[0042] Working process of this utility model:

[0043] During the operation of the modular automatic water sampler of the utility model, the input end of the sampling control mechanism 7 is connected to the factory sewage outlet, and then the sampling control mechanism 7 is connected to the A barrel 2 when the sampler body 1 is running, and the extracted water sample to be tested is stored in the A barrel 2, and the water sample is extracted every 15 minutes. After eight extractions, the mixed water sample to be tested in the A barrel 2 is discharged to the B barrel 3 through the first valve body 4 of the ball valve under the A barrel 2, and then a strong acid is added to the solution of the B barrel 3 through the dosing pump 8, and at the same time, the sample supply pump 9 supplies the mixed water sample to be tested in the B barrel 3 to the online instrument (COD, ammonia nitrogen, total phosphorus, total nitrogen, etc.) to detect whether it exceeds the standard. If it does not exceed the standard, the water sample of the B barrel 3 is discharged through the second valve body 6 of the ball valve under the B barrel 3, and the next detection process starts at the same time. If the detected water sample exceeds the standard, a portion of the water sample in bucket B is extracted through the sample pump 65 to the sample bottle 64 in the refrigeration chamber 11 for low-temperature refrigeration (the refrigeration temperature is ±2°). At the same time, the water sample in bucket B is discharged through the ball valve under bucket B to start the next detection process.

[0044] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The electric slide rail slide, cylinder, welding machine, electric telescopic rod and internal components of the controller all adopt conventional models in the prior art, and their internal structures belong to the prior art structure. Workers can complete normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the prior art, and no specific description is given here.

[0045] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A modular water quality automatic sampler, comprising a sampler body (1), a sampling container arranged in the sampler body (1), a sample retention device connected to the sampling container and used to store samples, and a central control system connected to the sampling container and the sample retention device, characterized in that: The sampling container and the sample retaining device are both detachably arranged in the sampler body (1); the sampling container comprises an A barrel (2) and a B barrel (3); the output end of the A barrel (2) and the input end of the B barrel (3) are connected via a first valve body (4); the first output end of the B barrel (3) is connected to the sample retaining device; the second output end is provided with a sample discharge pipeline, and the sample discharge pipeline is provided with a second valve body (6); The input end of the A barrel (2) is provided with a sample injection control mechanism (7) for controlling the input of the water sample to be tested, and the sample injection control mechanism (7) of the central control system is intermittently opened and closed.

2. A modular water quality automatic sampler as claimed in claim 1, characterized in that: The sample retaining device comprises a sample inlet tube (61) and a sample outlet tube (62) which are connected to the B barrel (3); the sample inlet tube and the sample outlet tube (62) are connected via a rotating joint (63); one end of the sample outlet tube (62) is connected to the rotating joint (63) and the other end is provided with a sample outlet (621); a rotation drive mechanism for driving the sample outlet tube (62) to rotate around the rotating joint (63) is provided next to the rotating joint (63); the sample retaining device further comprises a plurality of sample retaining bottles (64) arranged in a circular array around the center of the rotating joint (63); an input port corresponding to the sample outlet (621) is provided on the sample retaining bottle (64); the rotation drive mechanism drives the sample outlet tube (62) to rotate to any angle so that the sample outlet (621) corresponds to an input port of any sample retaining bottle (64).

3. A modular water quality automatic sampler as claimed in claim 2, characterized in that: A sample retaining pump (65) is also provided between the sample inlet tube (61) and the B barrel (3).

4. A modular water quality automatic sampler as claimed in claim 1, characterized in that: A refrigerating chamber (11) is also provided in the sampler body (1), the sample retaining device is arranged in the refrigerating chamber (11), and a refrigerating mechanism corresponding to the refrigerating chamber (11) is provided in the sampler body (1).

5. A modular water quality automatic sampler as claimed in claim 1, characterized in that: The A barrel (2) and the B barrel (3) are both provided with a stirrer (5) for stirring the water samples therein.

6. A modular water quality automatic sampler as claimed in claim 1, characterized in that: The sample injection control mechanism (7) is a pump body arranged at the input end of the A barrel (2).

7. A modular water quality automatic sampler as claimed in claim 1, characterized in that: It also comprises a dosing pump (8), the input end of the dosing pump (8) being connected to the dosing container, and the output end of the dosing pump (8) being connected to the B barrel (3).

8. A modular water quality automatic sampler as claimed in claim 1, characterized in that: The sampler body (1) is provided with a water sample online detection instrument and a sample supply pump (9); the input end of the sample supply pump (9) is connected to the B barrel (3), and the output end is connected to the water sample online detection instrument.

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