Automatic cleaning device for flow path of ion chromatograph

Abstract

The utility model provides an automatic cleaning device for a flow path of an ion chromatograph, which belongs to the field of ion chromatographs and comprises an ion chromatograph body, a high-pressure constant-flux pump and a water storage bin, the high-pressure constant-flux pump and the water storage bin are arranged in the ion chromatograph body, and three-way valves are mounted at the input end and the output end of the high-pressure constant-flux pump respectively. The water storage bin is connected with a three-way valve located at the output end of the high-pressure constant-flux pump through an output pipe, a filling assembly is arranged outside the high-pressure constant-flux pump and composed of a conveying unit and an adjusting unit, and the conveying unit is located on the outer wall of the high-pressure constant-flux pump. According to the ion chromatograph, the end, far away from the water storage bin, of the water inlet pipe penetrates through the ion chromatograph body and extends to the outside of the ion chromatograph body, the water inlet pipe is hung on the outer wall of the ion chromatograph body, and the water inlet pipe has a certain length, so that an operator can conveniently connect the water inlet pipe with an external water pump, and clean water can be conveniently conveyed.

Description

Technical Field

[0001] The utility model relates to the field of ion chromatographs, and more specifically, to an automatic cleaning device for the flow path of an ion chromatograph. Background Art

[0002] In the process of liquid detection, an ion chromatograph is required. Most of the flowing detection substances in the ion chromatograph are mainly alkaline substances such as sodium hydroxide, potassium hydroxide, sodium sulfate, and sodium bicarbonate. If these substances exist in the high-pressure reciprocating pump of the ion chromatograph for a long time, they will form particles, thereby wearing and corroding the sealing ring in the high-pressure reciprocating pump, resulting in poor sealing of the equipment and liquid leakage.

[0003] Chinese Patent Publication No. CN216359216U discloses an automatic cleaning device for the flow path system of an ion chromatograph. By controlling the first electronic control valve and the third electronic control valve, the first delivery pipe and the second delivery pipe are closed. By controlling the second electronic control valve and the fourth electronic control valve, the first vertical pipe and the second vertical pipe are opened. Pure water in the first water storage box is extracted through the first three-way pipe and the second vertical pipe, and the pure water is discharged from the output end of the high-pressure reciprocating pump. At the same time, the high-pressure reciprocating pump is flushed with pure water.

[0004] Although the cap structure in the above cleaning device can seal the water inlet pipe and prevent foreign substances from entering the inside of the water storage box through the water inlet pipe, the cap structure will limit the position of the water inlet pipe, resulting in the inability to adjust the position of the water inlet pipe, making it inconvenient to connect the water inlet pipe to an external water source later. The clear water inside the external water source cannot enter the inside of the first water storage box through the water inlet pipe. Therefore, it is impossible to conveniently fill the first water storage box with clear water. How to improve these problems has become an urgent problem for those skilled in the art. Summary of the Utility Model

[0005] To make up for the above deficiencies, the utility model provides an automatic cleaning device for the flow path of an ion chromatograph, aiming to improve the problem that it is impossible to conveniently fill clear water.

[0006] The utility model is implemented as follows:

[0007] The utility model provides an automatic cleaning device for the flow path of an ion chromatograph, which includes an ion chromatograph body, a high-pressure reciprocating pump arranged inside the ion chromatograph body, and a water storage chamber arranged inside the ion chromatograph body. Three-way valves are installed at both the input end and the output end of the high-pressure reciprocating pump. The water storage chamber is connected to the three-way valve at the output end of the high-pressure reciprocating pump through an output pipe. A filling assembly is arranged outside the high-pressure reciprocating pump, and a support assembly is arranged on the outer wall of the ion chromatograph body.

[0008] The filling component consists of a conveying unit and an adjusting unit. The conveying unit is located on the outer wall of the high-pressure reciprocating pump, and the adjusting unit is located on the outer wall of the conveying unit.

[0009] Preferably, the conveying unit includes a water storage tank, a water inlet pipe, a connecting pipe, a baffle plate, and a perforated plate. The water storage tank is fixedly connected to the inner wall of the ion chromatograph body. The water inlet pipe is fixedly connected to the outer wall of the water storage tank. The connecting pipe is fixedly connected to the top of the water inlet pipe. The baffle plate is fixedly connected to the inside of the connecting pipe. The perforated plate is installed inside the connecting pipe.

[0010] By adopting the above technical solution, the connecting pipe can be connected to an external water pump to facilitate the transportation of clean water. The perforated plate can block the water inlet pipe to prevent large particle impurities from entering the inside of the water inlet pipe.

[0011] Preferably, a water delivery pipe is communicated with the bottom of the water storage tank. The water delivery pipe located at the bottom of the water storage tank is connected to a three-way valve at the input end of the high-pressure reciprocating pump. The outer wall of the perforated plate is rotatably connected to the inner wall of the connecting pipe and the outer wall of the baffle plate.

[0012] By adopting the above technical solution, clean water can enter the inside of the high-pressure reciprocating pump through the water delivery pipe and the three-way valve, and clean the inside of the high-pressure reciprocating pump. The perforated plate can rotate on the outer wall of the baffle plate and inside the connecting pipe.

[0013] Preferably, the adjusting unit includes an outer plate, a spring push rod, a clamping plate, an outer ring, and a connecting column. The outer plate is fixedly connected to the outer wall of the connecting pipe. The spring push rod is fixedly connected to the top of the outer plate. The clamping plate is installed at the top end of the spring push rod. The outer ring is rotatably connected to the outer wall of the connecting pipe. The connecting column is fixedly connected to the outer wall of the outer ring. A notch is formed inside the connecting pipe.

[0014] By adopting the above technical solution, the outer ring can rotate on the outer wall of the connecting pipe. When the outer ring rotates, it can drive the connecting column to rotate.

[0015] Preferably, the output end of the spring push rod is clamped with the clamping plate. The outer wall of the clamping plate is fixedly connected to the outer wall of the outer ring. One end of the connecting column away from the outer ring is fixedly connected to the outer wall of the perforated plate. The outer wall of the connecting column is slidably connected to the inner wall of the notch.

[0016] By adopting the above technical solution, when the spring push rod limits the clamping plate, the stability of the outer ring can be ensured. When the outer ring rotates, it can drive the perforated plate to rotate through the connecting column.

[0017] Preferably, the support component includes a support plate and a limiting plate. The support plate is arranged on the outer wall of the water inlet pipe. A groove is formed on the outer wall of the water inlet pipe. The limiting plate is fixedly connected to the outer wall of the water inlet pipe.

[0018] By adopting the above technical solution, the presence of the support plate can limit the water inlet pipe, avoiding the situation that the water inlet pipe is not easy to store due to its too long size.

[0019] Preferably, the outer wall of the support plate is fixedly connected to the outer wall of the ion chromatograph. An inner groove is provided inside the support plate. The inner wall of the support plate is slidably connected to the outer wall of the water inlet pipe. The outer diameter of the water inlet pipe is larger than the diameter of the inner groove. The groove is slidably connected to the inner groove. The bottom of the limiting plate contacts the top of the support plate.

[0020] By adopting the above technical solution, the water inlet pipe can be moved in a sliding manner, so that the water inlet pipe slides into the interior of the support plate through the groove and the inner groove. The presence of the limiting plate can limit the water inlet pipe.

[0021] The beneficial effects of the present utility model are:

[0022] 1. By providing a clamping plate, an outer ring and a hollow plate, rotating the clamping plate causes the clamping plate to drive the hollow plate to rotate through the outer ring and the connecting column, thereby adjusting the position of the hollow plate. By providing a baffle plate, since the baffle plate has the same size as the hollow plate, when the hollow plate is separated from the baffle plate, foreign matters from the outside can be prevented from entering the interior of the water inlet pipe. When the hollow plate overlaps with the baffle plate, sufficient space is reserved inside the connecting pipe, which can reduce the resistance during the delivery of clear water; since the end of the water inlet pipe far from the water storage bin penetrates the ion chromatograph body and extends to the outside of the ion chromatograph body, and the part of the water inlet pipe extending to the outside of the ion chromatograph body is hung on the outer wall of the ion chromatograph body, the water inlet pipe has a certain length, which is convenient for the operator to connect the water inlet pipe to an external water pump and facilitate the delivery of clear water.

[0023] 2. After the clear water is filled and the adjustment of the hollow plate is completed, adjust the height of the water inlet pipe so that the inner groove provided on the support plate is flush with the groove. Since the outer walls of the inner groove and the groove provided on the support plate are slidably connected, the water inlet pipe can be moved into the interior of the support plate. And since the outer wall diameter of the water inlet pipe is larger than the inner diameter of the inner groove, the water inlet pipe will be stuck inside the support plate, completing the storage of the water inlet pipe and solving the problem that the water inlet pipe is not convenient to place due to its long size. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a partial schematic view of the internal structure of an automatic cleaning device for the flow path of an ion chromatograph provided by an embodiment of the present utility model;

[0026] Figure 2 is the present utility model Figure 1 a magnified schematic view of the structure at position A in it;

[0027] Figure 3 It is a partial schematic view of the structure of a filling component of an automatic cleaning device for the flow path of an ion chromatograph provided by an embodiment of the present utility model;

[0028] Figure 4 It is a schematic view of the outer ring structure of an automatic cleaning device for the flow path of an ion chromatograph provided by an embodiment of the present utility model.

[0029] In the figure: 1. Ion chromatograph body; 2. High-pressure flat pump; 3. Water storage bin; 4. Filling component; 401. Water storage bin; 402. Water inlet pipe; 403. Connecting pipe; 404. Baffle; 405. Hollowed-out plate; 406. Outer plate; 407. Spring push rod; 408. Clamping plate; 409. Outer ring; 410. Connecting column; 411. Notch; 5. Support component; 501. Support plate; 502. Groove; 503. Limiting plate. Specific embodiments

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Refer to Figure 1 、 Figure 3 and Figure 4 , an automatic cleaning device for the flow path of an ion chromatograph, including an ion chromatograph body 1, a high-pressure flat pump 2 arranged inside the ion chromatograph body 1, and a water storage bin 3 arranged inside the ion chromatograph body 1. Three-way valves are installed at both the input end and the output end of the high-pressure flat pump 2. The water storage bin 3 is connected to the three-way valve at the output end of the high-pressure flat pump 2 through an output pipe. A filling component 4 is arranged outside the high-pressure flat pump 2. The filling component 4 is composed of a conveying unit and an adjusting unit. The conveying unit is located on the outer wall of the high-pressure flat pump 2, and the adjusting unit is located on the outer wall of the conveying unit.

[0032] Furthermore, the conveying unit includes a water storage bin 401, a water inlet pipe 402, a connecting pipe 403, a baffle 404 and a perforated plate 405. The water storage bin 401 is fixedly connected to the inner wall of the ion chromatograph body 1. A water delivery pipe is communicated with the bottom of the water storage bin 401. The water delivery pipe located at the bottom of the water storage bin 401 is connected to a three-way valve at the input end of the high-pressure reciprocating pump 2. Clear water can enter the inside of the high-pressure reciprocating pump 2 through the water delivery pipe and the three-way valve, and clean the inside of the high-pressure reciprocating pump 2. The water inlet pipe 402 is fixedly connected to the outer wall of the water storage bin 401. The connecting pipe 403 is fixedly connected to the top of the water inlet pipe 402. The connecting pipe 403 can be connected to an external water pump to facilitate the delivery of clear water. The baffle 404 is fixedly connected to the inside of the connecting pipe 403. The perforated plate 405 is installed inside the connecting pipe 403. The perforated plate 405 can block the water inlet pipe 402 to prevent large-particle impurities from entering the inside of the water inlet pipe 402. The outer wall of the perforated plate 405 is rotatably connected to the inner wall of the connecting pipe 403 and the outer wall of the baffle 404 respectively. The perforated plate 405 can rotate on the outer wall of the baffle 404 and inside the connecting pipe 403.

[0033] The adjusting unit includes an outer plate 406, a spring push rod 407, a clamping plate 408, an outer ring 409 and a connecting column 410. The outer plate 406 is fixedly connected to the outer wall of the connecting pipe 403. The spring push rod 407 is fixedly connected to the top of the outer plate 406. The clamping plate 408 is installed at the top of the spring push rod 407. The output end of the spring push rod 407 is clamped with the clamping plate 408. The outer ring 409 is rotatably connected to the outer wall of the connecting pipe 403. The outer ring 409 can rotate on the outer wall of the connecting pipe 403. The outer wall of the clamping plate 408 is fixedly connected to the outer wall of the outer ring 409. When the spring push rod 407 limits the clamping plate 408, the stability of the outer ring 409 can be ensured. The connecting column 410 is fixedly connected to the outer wall of the outer ring 409. When the outer ring 409 rotates, it can drive the connecting column 410 to rotate. One end of the connecting column 410 away from the outer ring 409 is fixedly connected to the outer wall of the perforated plate 405. When the outer ring 409 rotates, it can drive the perforated plate 405 to rotate through the connecting column 410. A notch 411 is formed inside the connecting pipe 403. The outer wall of the connecting column 410 is slidably connected to the inner wall of the notch 411.

[0034] When it is necessary to fill the inside of the water storage tank 401 with clean water through the water inlet pipe 402, the water inlet pipe 402 is connected to an external water pump through the connecting pipe 403, and the spring push rod 407 is pushed by a sliding method, so that the spring push rod 407 is separated from the clamping plate 408. Since the clamping plate 408 is fixedly connected to the outer ring 409, and both ends of the connecting column 410 are fixedly connected to the outer ring 409 and the hollow plate 405 respectively, pushing the clamping plate 408 can drive the hollow plate 405 to rotate through the outer ring 409 and the connecting column 410 until the hollow plate 405 overlaps with the baffle plate 404. At this time, clean water can be filled. And since the end of the water inlet pipe 402 far from the water storage tank 3 penetrates through the ion chromatograph body 1 and extends to the outside of the ion chromatograph body 1, and the water inlet pipe 402 is hung on the outer wall of the ion chromatograph body 1, due to the certain length of the water inlet pipe 402, it is convenient for the operator to connect the water inlet pipe 402 to an external water pump and facilitate the transportation of clean water; after the clean water filling is completed, the clamping plate 408 is rotated so that the clamping plate 408 drives the hollow plate 405 to rotate through the outer ring 409 and the connecting column 410, so that the hollow plate 405 cooperates with the baffle plate 404 to prevent foreign objects such as flying insects from entering the inside of the water inlet pipe 402.

[0035] Refer to Figure 1-2 Furthermore, a support assembly 5 is provided on the outer wall of the ion chromatograph body 1. The support assembly 5 includes a support plate 501 and a limit plate 503. The support plate 501 is arranged on the outer wall of the water inlet pipe 402. The presence of the support plate 501 can limit the water inlet pipe 402 and prevent the situation that the water inlet pipe 402 is not easy to store due to its too long size. The outer wall of the support plate 501 is fixedly connected to the outer wall of the ion chromatograph body 1. An inner groove is formed inside the support plate 501. The inner wall of the support plate 501 is slidably connected to the outer wall of the water inlet pipe 402. The outer diameter of the water inlet pipe 402 is larger than the diameter of the inner groove. A groove 502 is slidably connected to the inner groove. A groove 502 is formed on the outer wall of the water inlet pipe 402. The water inlet pipe 402 can be moved by a sliding method, so that the water inlet pipe 402 slides into the inside of the support plate 501 through the groove 502 and the inner groove. The limit plate 503 is fixedly connected to the outer wall of the water inlet pipe 402. The bottom of the limit plate 503 contacts the top of the support plate 501. The presence of the limit plate 503 can limit the water inlet pipe 402.

[0036] After completing the filling with clean water and adjusting the hollow plate 405, the height of the water inlet pipe 402 is adjusted so that the inner groove opened in the support plate 501 is flush with the groove 502. Since the inner groove at the beginning of the support plate 501 is slidably connected to the outer wall of the groove 502, the water inlet pipe 402 can be moved to the inside of the support plate 501, and since the outer wall diameter of the water inlet pipe 402 is larger than the inner diameter of the inner groove, the water inlet pipe 402 will be stuck in the inside of the support plate 501, completing the storage of the water inlet pipe 402, and solving the problem of the inconvenience of placing the water inlet pipe 402 due to its long size.

[0037] The working principle of the automatic cleaning device for the flow path of an ion chromatograph is as follows: when it is necessary to flush the water storage tank 401, the position of the water inlet pipe 402 is adjusted by sliding, so that the groove 502 moves to the inside of the support plate 501, and the water inlet pipe 402 is taken out from the inside of the support plate 501 through the groove 502, and then the connecting pipe 403 is connected to the external water pump, and the spring push rod 407 is adjusted to separate the spring push rod 407 from the clamping plate 408, and the clamping plate 408 is swung. Since the clamping plate 408 is fixedly connected to the outer ring 409, the clamping plate 408 will drive the outer ring 409 to rotate. Since the outer ring 409 is fixedly connected to the hollow plate 405 through the connecting column 410, and the connecting column 410 is slidably connected to the notch 411, when the outer ring 409 rotates, it will drive the hollow plate 405 to rotate through the connecting column 410 until the hollow plate 40 5 overlaps with the baffle 404. At this time, the water pump is controlled to operate, and the clean water will be transported to the inside of the water storage tank 401 through the connecting pipe 403 and the water inlet pipe 402. After the clean water filling of the water storage tank 401 is completed, the card plate 408 is rotated so that the card plate 408 drives the hollow plate 405 to rotate through the outer ring 409 and the connecting column 410, so that the hollow plate 405 rotates to the outer wall of the baffle 404, and then by adjusting the height of the water inlet pipe 402, the inner groove opened by the support plate 501 is flush with the groove 502. Since the inner groove of the support plate 501 is slidably connected with the outer wall of the groove 502, the water inlet pipe 402 can be moved by sliding to the inside of the support plate 501, and since the outer wall diameter of the water inlet pipe 402 is larger than the inner diameter of the inner groove, the water inlet pipe 402 will be stuck in the inside of the support plate 501, and the water inlet pipe 402 is stored.

[0038] When it is necessary to clean the interior of the high-pressure horizontal flow pump 2, by controlling the operation of the three-way valve, when the high-pressure horizontal flow pump 2 is in operation, the clean water inside the water storage tank 401 will be pumped out through the water pipe and transported to the interior of the high-pressure horizontal flow pump 2, and the interior of the high-pressure horizontal flow pump 2 will be cleaned. After the cleaning is completed, the cleaned sewage will be transported to the interior of the water storage tank 3 through the output pipe.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An automatic cleaning device for the flow path of an ion chromatograph, comprising an ion chromatograph body (1), a high-pressure reciprocating pump (2) provided inside the ion chromatograph body (1), and a water storage tank (3) provided inside the ion chromatograph body (1), characterized in that: Three-way valves are installed at both the input end and the output end of the high-pressure reciprocating pump (2). The water storage bin (3) is connected to the three-way valve at the output end of the high-pressure reciprocating pump (2) through an output pipe. A filling component (4) is arranged outside the high-pressure reciprocating pump (2), and a support component (5) is arranged on the outer wall of the ion chromatograph body (1). The filling component (4) consists of a conveying unit and an adjusting unit. The conveying unit is located on the outer wall of the high-pressure reciprocating pump (2), and the adjusting unit is located on the outer wall of the conveying unit. The conveying unit includes a water storage bin (401), a water inlet pipe (402), a connecting pipe (403), a baffle (404), and a perforated plate (405). The water storage bin (401) is fixedly connected to the inner wall of the ion chromatograph body (1). The water inlet pipe (402) is fixedly connected to the outer wall of the water storage bin (401). The connecting pipe (403) is fixedly connected to the top of the water inlet pipe (402). The baffle (404) is fixedly connected to the inside of the connecting pipe (403). The perforated plate (405) is installed inside the connecting pipe (403). The adjusting unit includes an outer plate (406), a spring push rod (407), a clamping plate (408), an outer ring (409), and a connecting column (410). The outer plate (406) is fixedly connected to the outer wall of the connecting pipe (403). The spring push rod (407) is fixedly connected to the top of the outer plate (406). The clamping plate (408) is installed at the top of the spring push rod (407). The outer ring (409) is rotatably connected to the outer wall of the connecting pipe (403). The connecting column (410) is fixedly connected to the outer wall of the outer ring (409). A notch (411) is formed inside the connecting pipe (403). The output end of the spring push rod (407) is clamped with the clamping plate (408). The outer wall of the clamping plate (408) is fixedly connected to the outer wall of the outer ring (409). One end of the connecting column (410) away from the outer ring (409) is fixedly connected to the outer wall of the perforated plate (405). The outer wall of the connecting column (410) is slidably connected to the inner wall of the notch (411). The support component (5) includes a support plate (501) and a limit plate (503). The support plate (501) is arranged on the outer wall of the water inlet pipe (402). A groove (502) is formed on the outer wall of the water inlet pipe (402). The limit plate (503) is fixedly connected to the outer wall of the water inlet pipe (402).

2. The automatic cleaning device for the ion chromatograph flow path according to claim 1, wherein: A water output pipe is communicated with the bottom of the water storage bin (401). The water output pipe at the bottom of the water storage bin (401) is connected to the three-way valve at the input end of the high-pressure reciprocating pump (2). The outer wall of the perforated plate (405) is respectively rotatably connected to the inner wall of the connecting pipe (403) and the outer wall of the baffle (404).

3. An automatic cleaning device for the ion chromatograph flow path according to claim 2, characterized in that: The outer wall of the support plate (501) is fixedly connected to the outer wall of the ion chromatograph body (1). An inner groove is provided inside the support plate (501). The inner wall of the support plate (501) is slidably connected to the outer wall of the water inlet pipe (402). The outer diameter of the water inlet pipe (402) is greater than the diameter of the inner groove. The groove (502) is slidably connected to the inner groove. The bottom of the limiting plate (503) contacts the top of the support plate (501).

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