Water quality detection reagent storage device and water quality detection device

Abstract

The application discloses a water quality detection reagent storage device which comprises a reagent bag and a protective tank used for placing the reagent bag, wherein an upper end of the protective tank is provided with a closing cover structure used for closing the opening; the closing cover structure comprises a cover body, a connecting hole, a transmission hose and a sealing assembly; the sealing assembly is provided with at least one first pipe body, one end of the first pipe body is connected with the transmission hose by inserting into the transmission hose, and the other end of the first pipe body is provided with a pipe orifice which forms a sealing film and is used for closing a reagent transmission path. The device can guarantee that the reagent in the reagent bag is not polluted when the device is in standby state; after one water quality detection is completed, the transmission path pollution problem is effectively avoided by replacing a single component, and the accuracy of the next detection data is guaranteed; meanwhile, the device has the advantages of simple structure, low replacement component cost, strong practicability and good economy.

Description

Technical Field

[0001] This invention belongs to the field of water quality testing technology, specifically relating to a water quality testing reagent storage device and a water quality testing device. Background Technology

[0002] Online water quality analyzers require various reagents for online water quality monitoring. Therefore, containers are needed to store these reagents, and corresponding tubing is used to deliver them to the instrument's internal flow path system. Currently, the mainstream practice is to use dedicated plastic bottles, glass bottles, or storage bags to store reagents. Each reagent bottle has its own corresponding tubing that connects to the online water quality analyzer. Reagents need to be replaced or refilled when used up. This method is cost-effective but has some drawbacks. For example, when changing multiple reagents simultaneously, careful verification of the connected tubing and reagent bottles or bags is necessary. Incorrect connections can lead to abnormal results. Furthermore, reagent bags are prone to breakage during transport, causing reagents to mix and affecting the accuracy of the test.

[0003] Therefore, it is necessary to use a reagent storage device to store reagent bags containing various reagents. When the reagents are used up, the reagent storage device needs to be opened to replace or add reagents. When replacing multiple reagent storage bags at the same time, the pipelines connecting the reagent bags to the online water quality analyzer need to be disassembled one by one and then locked and installed one by one. The operation steps are relatively cumbersome and affect work efficiency.

[0004] The document with authorization announcement number CN117890552B discloses a water quality testing device and its reagent storage structure, including a reagent bag, a connecting mechanism, a sealing mechanism, and a supporting mechanism for protecting the reagent bag; the supporting mechanism has a hollow shell structure, and the reagent bag is built into the supporting mechanism for storing reagents used in water quality testing; the connecting mechanism includes a connecting tube and a hose assembly, and the hose assembly is used to connect the connecting tube to the reagent bag; the sealing mechanism includes a mounting cover, a locking element, and a splicing element; the mounting cover has a threaded groove on its surface facing the supporting mechanism.

[0005] The working principle of this scheme is as follows: the locking component can quickly limit the installation of multiple connecting pipes by squeezing the connecting pipe through the sealing gasket, and the splicing component completes the connection between the input port of the detector and the connecting pipe through the splicing cover plate and the inverted tapered threaded joint.

[0006] However, the above-mentioned device still has the following drawbacks: during the reagent delivery process, the locking parts and splicing parts will inevitably be contaminated with reagents, which can easily cause pollution. Replacing the locking parts and splicing parts with a brand new one is costly, and cleaning them is difficult due to the complex internal structure and many blind spots. Summary of the Invention

[0007] To address the aforementioned problems, one objective of this invention is to provide a water quality testing reagent storage device. By incorporating a cover, a transmission hose, and a sealing assembly, the device ensures that the reagents inside the reagent bag remain uncontaminated during standby. Furthermore, after a water quality test is completed, the contamination of the transmission path is effectively avoided by replacing individual components, ensuring the accuracy of the next test data. Simultaneously, the device has a simple structure, low component replacement costs, and possesses the advantages of strong practicality and good economy.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows:

[0009] A water quality testing reagent storage device includes a reagent bag and a protective container for holding the reagent bag. The protective container has a fixing plate inside for holding the reagent bag, an opening at its upper end, and a sealing cap structure for closing the opening. The sealing cap structure includes a cap body, a connecting hole on the cap body, a transfer hose connected to the connecting hole and for connecting to a delivery tube on the reagent bag, and a sealing assembly on the cap body located at the connecting hole. The sealing assembly has at least one first tube body, one end of which is connected to the transfer hose by being inserted into it, and the other end of which forms a sealing membrane to seal the reagent delivery path.

[0010] As a further preferred embodiment of the present invention, the sealing assembly has at least one second tube disposed outside the first tube, the end of the second tube near the connection hole being detachably connected to the cover.

[0011] As a further preferred embodiment of the present invention, the first tube body has at least one tensioning tube portion inserted into the transmission hose and an expansion tube portion connected to the tensioning tube portion, wherein the expansion tube portion is provided with a first external thread on its outer side; the second tube body has at least one internal thread fixing tube portion connected to the first external thread and a support ring portion connected to the end of the internal thread fixing tube portion, wherein the support ring portion is detachably connected to the cover body.

[0012] As a further preferred embodiment of the present invention, the sealing assembly has at least a third tube detachably connected to the end of the second tube away from the cover, and a fourth tube disposed in the third tube and used for connection with the first tube; the fourth tube has at least a tapered tube portion for inserting the sealing membrane.

[0013] As a further preferred embodiment of the present invention, the third tube body includes a body and an internally threaded ring disposed on the inner wall of the body body; the fourth tube body has at least one straight tube portion connected to the tapered tube portion and a flexible tube portion connected to the straight tube portion, and the outer wall of the straight tube portion is provided with a second external thread connected to the internally threaded ring.

[0014] As a further preferred embodiment of the present invention, a sealing ring is provided on the outer ring surface of the tapered tube section, which is slidably connected to the inner wall of the first tube body.

[0015] As a further preferred embodiment of the present invention, a first filter screen is provided on the end of the tapered tube with a smaller diameter.

[0016] As a further preferred embodiment of the present invention, a second filter screen is provided at the connection between the tensioning tube and the expansion tube.

[0017] As a further preferred embodiment of the invention, the third tube further includes a clamp disposed on the end of the internal threaded ring and used to clamp the hose portion.

[0018] As a further preferred embodiment of the present invention, the clamp includes a mounting groove disposed on the end of the internal threaded ring, a fixing rod disposed on the mounting groove, and a clamping plate rotatably connected to the fixing rod. One end of the clamping plate has a rotating hole for the fixing rod to pass through, and a torsion spring is disposed at the connection between the rotating hole and the fixing rod.

[0019] As a further preferred embodiment of the present invention, a first fastening ring is provided at the connection between the transmission hose and the first tube body.

[0020] As a further preferred embodiment of the present invention, a second fastening ring is provided on the outer side of the hose portion.

[0021] As a further preferred embodiment of the present invention, the second pipe body and the third pipe body are connected by a sealing flange.

[0022] As a further preferred embodiment of the invention, the sealing cover structure further includes a shielding shell detachably connected to the cover body and located in the sealing assembly.

[0023] Another object of the present invention is to provide a water quality testing device, which includes the water quality testing reagent storage device described above. Attached Figure Description

[0024] Appendix Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0025] Appendix Figure 2 This is a partial structural diagram of Embodiment 1 of the present invention. Figure 1 .

[0026] Appendix Figure 3This is a partial structural diagram of Embodiment 1 of the present invention. Figure 2 .

[0027] Appendix Figure 4 This is a schematic diagram of the positional structure of Embodiment 2 of the present invention.

[0028] Appendix Figure 5 This is a partial structural diagram of Embodiment 2 of the present invention. Figure 1 .

[0029] Appendix Figure 6 This is a partial structural diagram of Embodiment 2 of the present invention. Figure 2 .

[0030] Attached diagram: 11 reagent bag, 12 protective container, 2-sealed lid structure;

[0031] Fixed plate 121, opening 122;

[0032] 21. Cover body, 22. Connection hole, 23. Transmission hose, 24. Sealing assembly, 25.

[0033] The first tube body 241, the second tube body 242, the third tube body 243, the fourth tube body 244;

[0034] Tightening tube section 241a, expanding tube section 241b, second filter screen 241c;

[0035] Internal threaded fixed tube part 242a, support ring part 242b;

[0036] Body 243a, internal threaded ring 243b;

[0037] Conical tube section 244a, straight tube section 244b, flexible tube section 244c, sealing ring 244d, first filter screen 244e, clamp 244f;

[0038] Mounting groove 244f1, fixing rod 244f2, clamping plate 244f3. Detailed Implementation

[0039] In the description of this invention, it should be understood that the terms "upper," "lower," "inner," "outer," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to 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 invention.

[0040] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Example 1

[0042] As attached Figure 1 and attached Figure 2 As shown, this embodiment provides a water quality testing reagent storage device, including a reagent bag 11 and a protective container 12 for placing the reagent bag 11. The protective container 12 is provided with a fixing plate 121 for placing the reagent bag 11 inside. The upper end of the protective container 12 has an opening 122, and the upper end of the protective container 12 is provided with a sealing cap structure 2 for closing the opening 122.

[0043] In this embodiment, the sealing cap structure 2 includes a cap body 21, a connection hole 22 disposed on the cap body 21, a transfer hose 23 connected in the connection hole 22 and used for connection with the delivery tube on the reagent bag 11, and a sealing assembly 24 disposed on the cap body 21 and located at the connection hole 22.

[0044] As a further preferred embodiment, the cover 21 and the protective container 12 are connected by threads, and a sealing layer is provided at the connection between them. This arrangement not only ensures the airtightness of the container, but also facilitates the placement of the reagent bag 11.

[0045] In this embodiment, the sealing assembly 24 has at least one first tube body 241. One end of the first tube body 241 is connected to the transmission hose 23 by being inserted into the transmission hose 23, and the other end of the tube forms a sealing film to seal the reagent transmission path. The first tube body 241 has at least one tightening tube portion 241a inserted into the transmission hose 23 and an expanding tube portion 241b connected to the tightening tube portion 241a. The expanding tube portion 241b has a first external thread on its outer side.

[0046] The transmission hose 23 is made of existing materials such as rubber and has the ability to recover from deformation. The tightening tube 241a is made of existing materials such as metal or polymer materials such as polytetrafluoroethylene, and the external diameter of the tightening tube 241a is larger than the inner diameter of the transmission hose 23, thereby making the connection between the tightening tube 241a and the transmission hose 23 tight and not easy to fall off. Preferably, a first fastening ring is provided at the connection between the transmission hose 23 and the first tube body 241. The first fastening ring can also be made of existing materials such as rubber, thereby further strengthening the connection strength between the transmission hose 23 and the first tube body 241. The sealing film is made of existing materials such as aluminum foil and is used to seal the end of the first tube body 241 to ensure that the reagent is not contaminated when not in use. The expanded tube 241b is integrally formed with the tightening tube 241a and is mainly used to extend the length of the first tube body 241 to form a suitable transmission path and increase the flow rate of the tube diameter.

[0047] In this embodiment, the sealing assembly 24 has at least one second tube 242 disposed outside the first tube 241, and the end of the second tube 242 near the connecting hole 22 is detachably connected to the cover 21. Furthermore, the second tube 242 has at least one internally threaded fixing tube portion 242a connected to the first external thread, and a support ring portion 242b connected to the end of the internally threaded fixing tube portion 242a, and the support ring portion 242b is detachably connected to the cover 21.

[0048] The second tube 242 is mainly used to support and fix the first tube 241, thus providing protection. The detachable connection between the support ring 242b and the cover 21 can be a threaded connection, a snap-fit ​​connection, or any other existing technology, so it will not be described in detail in this embodiment.

[0049] As a further preferred embodiment, a second filter 241c is provided at the connection between the tensioning tube 241a and the expansion tube 241b. The second filter 241c is mainly used to prevent material broken after the sealing membrane ruptures from entering the transmission hose 23 through the first tube 241.

[0050] As a further preferred embodiment, the sealing cover structure 2 also includes a shielding shell 25 that is detachably connected to the cover body 21 and located on the sealing assembly 24, mainly used to protect the sealing assembly 24.

[0051] The water quality testing reagent storage device provided in this embodiment operates as follows: A reagent bag 11 is placed on a fixing plate 121 inside a protective container 12. A transfer hose 23, connected to the delivery tube on the reagent bag 11, is passed through a connection hole 22 on a cover 21. Then, a tightening tube 241a is inserted into the transfer hose 23. Because a sealing film is pre-installed at the opening of the expanding tube 241b, the transfer hose 23 is sealed after the first tube 241 is installed, protecting the reagent inside the reagent bag 11. After the first tube 241 is installed, a second tube 242 is further installed outside the first tube 241, fixing the first tube 241 to the cover 21. Before water quality testing, the storage device is in standby mode. At this time, the sealing component 24 effectively seals the reagent bag 11, ensuring the reagent is not contaminated. During water quality testing, simply opening the sealing film and connecting the tube of the water quality analyzer to the first tube 241 allows for effective reagent delivery; the operation is simple. During this process, since the reagents are only dispensed within the first tube 241, before the next test, only the first tube 241 needs to be replaced or cleaned to ensure no contamination and guarantee the test results. It is worth noting that the sealing film can be remade by hot pressing if it breaks.

[0052] The water quality testing reagent storage device provided in this embodiment has the following advantages compared with the prior art: First, the device can ensure that the reagents in the reagent bag will not be contaminated when in standby mode; Second, after a water quality test is completed, the device can effectively avoid the problem of transmission path contamination by replacing individual parts, thus ensuring the accuracy of the next test data; Third, the device has a simple structure and low cost of replacing parts, and has the advantages of strong practicality and good economy.

[0053] Example 2

[0054] This embodiment further adds a structure for connecting to the input pipe of the water quality analyzer, based on embodiment 1, to enhance the connection tightness. The specific structure is as follows:

[0055] In this embodiment, the sealing assembly 24 has at least a third tube 243 detachably connected to the end of the second tube 242 away from the cover 21, and a fourth tube 244 disposed in the third tube 243 and used for connection with the first tube 241; the fourth tube 244 has at least a tapered tube portion 244a for inserting the sealing membrane.

[0056] Specifically, the tapered tube section 244a is a tube whose diameter gradually decreases from top to bottom, and its cross-section is an inverted isosceles trapezoid. The second tube section 242 and the third tube section 243 are connected by a sealing flange. Since the sealing flange is existing technology, it will not be described in detail in this embodiment.

[0057] In this embodiment, the third tube 243 includes a body 243a and an internally threaded ring 243b disposed on the inner wall of the body 243a; the fourth tube 244 has at least one straight tube portion 244b connected to the tapered tube portion 244a and a flexible tube portion 244c connected to the straight tube portion 244b, and the outer wall of the straight tube portion 244b is provided with a second external thread connected to the internally threaded ring 243b.

[0058] The connection between the internal threaded ring 243b and the straight pipe section 244b is mainly used to fix the fourth pipe body 244 as a whole; the connection between the flexible hose section 244c and the input pipe on the water quality analyzer can be directly referred to the connection between the transmission hose 23 and the tensioning pipe section 241a, that is, the flexible hose section 244c is made of existing materials such as rubber so that the input pipe is clamped and fixed after being inserted into the flexible hose section 244c; furthermore, a second fastening ring is provided on the outside of the flexible hose section 244c for further clamping the input pipe.

[0059] As a further preferred embodiment, a sealing ring 244d is provided on the outer ring surface of the tapered tube portion 244a, which is slidably connected to the inner wall of the first tube body 241. The purpose of this arrangement is to ensure that after the tapered tube portion 244a is inserted into the first tube body 241, the sealing ring 244d can effectively block the first tube body 241, so that the reagent can only be transferred through the tapered tube portion 244a.

[0060] As a further preferred embodiment, a sealing layer is provided on the end of the internal threaded ring 243b near the tapered tube portion 244a to improve the sealing effect between the tapered tube portion 244a and the internal threaded ring 243b.

[0061] As a further preferred embodiment, a first filter screen 244e is provided at the smaller diameter end of the tapered tube 244a. The first filter screen 244e is provided to prevent fragments of the sealed membrane from entering the input tube of the water quality analyzer.

[0062] As a further preferred embodiment, the third tube 243 further includes a clamp 244f disposed on the end of the internal threaded ring 243b and used to clamp the hose portion 244c.

[0063] In this embodiment, a specific structure of the clamp 244f is as follows: it includes a mounting groove 244f1 disposed on the end of the internal threaded ring 243b, a fixing rod 244f2 disposed on the mounting groove 244f1, and a clamping plate 244f3 rotatably connected to the fixing rod 244f2. One end of the clamping plate 244f3 has a rotating hole for the fixing rod 244f2 to pass through, and a torsion spring is disposed at the connection between the rotating hole and the fixing rod 244f2.

[0064] Understandably, the fixture 244f is mainly used to further strengthen the connection between the third tube 243 and the input tube on the water quality analyzer to prevent leakage.

[0065] The device provided in this embodiment further improves the connection strength between the input tube and the sealing component on the water quality analyzer. Since the fourth tube 244 still has the function of being detachable and replaceable, after a water quality test is completed, the fourth tube 244 can be replaced to ensure that the reagent transmission path is uncontaminated and to ensure the accuracy of the test data.

[0066] Example 3

[0067] This embodiment further optimizes upon embodiment 1 or 2, allowing the reagent bag 11 to be better preserved within the protective container 12. For example, an air inlet and air intake are provided inside the container to allow outside air to enter and promote air circulation within the container. The functional components described in this embodiment can be referenced from the structures disclosed in the document with authorization publication number CN117890552B, therefore, they will not be described again in this embodiment.

[0068] Example 4

[0069] Another object of the present invention is to provide a water quality testing device, which includes the aforementioned water quality testing reagent storage device. In addition to the water quality testing reagent storage device, the water quality testing device also includes an online water quality analyzer, which is existing technology and will not be described in detail here.

[0070] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A water quality testing reagent storage device, comprising a reagent bag (11) and a protective container (12) for holding the reagent bag (11), characterized in that, The protective container (12) is provided with a fixing plate (121) for placing the reagent bag (11) inside. The upper end of the protective container (12) has an opening (122) and a sealing cap structure (2) for closing the opening (122) is provided at the upper end of the protective container (12). The closed cap structure (2) includes a cap body (21), a connection hole (22) disposed on the cap body (21), a transfer hose (23) connected in the connection hole (22) and used for connection with the delivery tube on the reagent bag (11), and a sealing assembly (24) disposed on the cap body (21) and located at the connection hole (22). The sealing assembly (24) has at least one first tube (241), one end of which is connected to the transmission hose (23) by being inserted into the transmission hose (23), and the other end of which forms a sealing film to seal the reagent transmission path; The sealing assembly (24) has at least one second tube (242) disposed outside the first tube (241), and the end of the second tube (242) near the connection hole (22) is detachably connected to the cover (21); The sealing assembly (24) has at least one third tube (243) detachably connected to the end of the second tube (242) away from the cover (21), and a fourth tube (244) disposed in the third tube (243) and used for connection with the first tube (241); the fourth tube (244) has at least one tapered tube portion (244a) for inserting the sealing membrane. The third tube (243) includes a body (243a) and an internally threaded ring (243b) disposed on the inner wall of the body (243a); the fourth tube (244) has at least one straight tube section (244b) connected to the tapered tube section (244a) and a flexible tube section (244c) connected to the straight tube section (244b), and the outer wall of the straight tube section (244b) is provided with a second external thread connected to the internally threaded ring (243b).

2. The water quality testing reagent storage device according to claim 1, characterized in that, The first tube body (241) has at least one tensioning tube section (241a) inserted into the transmission hose (23) and an enlarged tube section (241b) connected to the tensioning tube section (241a), the outer side of the enlarged tube section (241b) being provided with a first external thread; the second tube body (242) has at least one internal thread fixing tube section (242a) connected to the first external thread and a support ring section (242b) connected to the end of the internal thread fixing tube section (242a), the support ring section (242b) being detachably connected to the cover (21).

3. The water quality testing reagent storage device according to claim 1, characterized in that, A sealing ring (244d) is provided on the outer ring surface of the tapered tube section (244a) and is slidably connected to the inner wall of the first tube body (241).

4. The water quality testing reagent storage device according to claim 1, characterized in that, A first filter screen (244e) is provided on the smaller diameter end of the tapered tube section (244a).

5. A water quality testing reagent storage device according to claim 2, characterized in that, A second filter screen (241c) is provided at the connection between the tensioning tube (241a) and the expansion tube (241b).

6. The water quality testing reagent storage device according to claim 1, characterized in that, The third tube (243) also includes a clamp (244f) disposed on the end of the internal threaded ring (243b) for clamping the hose portion (244c).

7. A water quality testing device, comprising a water quality testing reagent storage device according to any one of claims 1 to 6.

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