Ion chromatograph with backwashing and self-cleaning functions

Abstract

The utility model discloses an ion chromatograph with backwashing and self-cleaning functions, which relates to the technical field of chromatographs and comprises an instrument body, the upper side of the instrument body is fixedly connected with a support, the support is provided with a turnover box, two round holes are arranged outside the turnover box, a liquid inlet pipe and a liquid outlet pipe are respectively and fixedly connected in the round holes, and the liquid inlet pipe and the liquid outlet pipe are communicated with the liquid inlet pipe and the liquid outlet pipe. The end, away from the turnover box, of the liquid outlet pipe is communicated with the instrument body, a filter element is arranged in the turnover box, a pulse washing module is arranged below the filter element, and a turnover locking module is arranged on the rest. The ion chromatograph with the backwashing and self-cleaning functions disclosed by the utility model has the advantages that the filter element can be backwashed by the device so as to realize self-cleaning, impurity accumulation on filter equipment is reduced, and normal operation of the use function of the filter equipment is ensured, so that the influence of blocked impurities on the use efficiency of the chromatograph is reduced, and the service life of the chromatograph is prolonged. The impurities are ensured not to pollute the components of the to-be-detected liquid, and the reliability of the analysis result of the chromatograph is improved.

Description

Technical Field

[0001] This utility model relates to the field of chromatography technology, and in particular to an ion chromatograph with backwashing self-cleaning function. Background Technology

[0002] A chromatograph is a device used for chromatographic separation and analysis. It includes an injection system, a detection system, a recording and data processing system, a temperature control system, and a mobile phase control system. Chromatographs are widely used for the analysis of certain contents of chemical products and polymer materials. Among them, ion chromatography is a type of high-performance liquid chromatography, which is mainly used for the analysis of environmental samples, including the analysis of anions and cations in samples such as surface water, drinking water, rainwater, and domestic sewage.

[0003] When performing chromatographic analysis on liquids, the liquid to be analyzed must be filtered before it can be used. Due to prolonged use, the filtration equipment becomes clogged with impurities, and its filtration function gradually declines. Existing ion chromatographs lack effective self-cleaning measures, which causes the efficiency of the chromatograph to be affected by the filtration equipment. Furthermore, filtration equipment containing a large number of impurities will further affect the accuracy of the chromatograph's analytical results. Utility Model Content

[0004] This utility model discloses an ion chromatograph with backwashing self-cleaning, which aims to solve the technical problem that existing ion chromatographs lack effective self-cleaning measures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ion chromatograph with backwashing self-cleaning function, comprising an instrument body, a support frame fixedly connected to the upper side of the instrument body, a tilting box provided on the support frame, two circular holes opened on the outside of the tilting box, an inlet pipe and an outlet pipe fixedly connected to the circular holes respectively, the end of the outlet pipe away from the tilting box communicating with the instrument body, and a filter element provided inside the tilting box, a pulse flushing module provided below the filter element, a tilting locking module provided on the support frame, the pulse flushing module comprising a pressure chamber, a guide pipe provided at the bottom of the pressure chamber, a deflection plate provided outside the pressure chamber, a rubber plate fixedly connected to the bottom of the deflection plate, an inclined groove opened at the bottom of the rubber plate, the inner wall of the inclined groove fitting with the outside of the pressure chamber, and an adapter provided on the deflection plate, the adapter communicating with the pressure chamber, and a high-pressure nozzle provided above the adapter.

[0006] In a preferred embodiment, the bottom of the tilting box has a circular opening, the inner wall of which is slidably connected to the outside of the guide pipe. A receiving frame is slidably connected to the outside of the pressurizing chamber, and the bottom of the receiving frame is fixedly connected to the inner wall of the bottom of the tilting box. A spring is fixedly connected to the bottom of the pressurizing chamber, with the end of the spring away from the pressurizing chamber fixedly connected to the inner wall of the bottom of the tilting box. A rotating motor is located below the deflection plate, its bottom fixedly connected to the inner wall of the bottom of the tilting box. The output end of the rotating motor is connected to the bottom of the deflection plate via a coupling. A positioning plate is fixedly connected to the inner wall of the tilting box, and a rectangular frame is formed on the positioning plate. A sealing ring is provided on the outside of the rectangular frame. The bottom of the sealing ring is fixedly connected to the upper side of the positioning plate. A closing plate is movably connected to the upper side of the positioning plate. The bottom of the closing plate is in contact with the upper side of the sealing ring. An installation plate is fixedly connected to the inner wall of the flip box. A sliding groove is opened on the installation plate. A hollow slider is slidably connected in the sliding groove. The inner wall of the hollow slider is fixedly connected to the outside of the high-pressure nozzle. A transmission pipe is fixedly connected to the bottom of the high-pressure nozzle. The end of the transmission pipe away from the high-pressure nozzle is fixedly connected to the upper side of the adapter. A linear motor is fixedly connected to the upper side of the installation plate. The output end of the linear motor is fixedly connected to the outside of the hollow slider.

[0007] In a preferred embodiment, the flip-locking module includes two symmetrical rotating shafts, each fixedly connected to the side opposite to the flip box. Two symmetrical slots are formed on the support frame, the inner walls of which are movably connected to the outside of the rotating shafts. A groove is formed on the outside of the support frame, and a coil spring is fixedly connected to the inner wall of the groove. The end of the coil spring away from the groove is fixedly connected to the outside of one of the rotating shafts, and an annular frame is movably connected to the outside of the rotating shaft on the same side as the coil spring. The annular frame is fixedly connected to the side opposite to the outside of the support frame. A positioning piece is fixedly connected to the inner wall of the annular frame, and a slot is formed on the positioning piece. An airbag is fixedly connected to the inner wall of the slot, and a push-pull plate is fixedly connected to one end of the airbag. The outside of the push-pull plate is connected to... The inner wall of the ring frame is slidably connected. A rotating plate is fixedly connected to the side of the push-pull plate away from the ring frame. The rotating plate is fixedly connected to the side opposite to the rotating shaft. An airbag is fixedly connected to the end of airbag one away from the push-pull plate. A notch is opened on the rotating plate. A limit rod is engaged in the notch. The limit rod is fixedly connected to the side opposite to the armrest. A reserved groove is opened on the rotating plate. A stabilizing rod is slidably connected in the reserved groove. A spring two is wrapped around the outside of the stabilizing rod. One end of the spring two is fixedly connected to the outside of the stabilizing rod, and the other end is fixedly connected to the outside of the rotating plate. An arc-shaped groove is opened on the side of the armrest close to the rotating plate. The inner wall of the arc-shaped groove is slidably connected to the outside of the stabilizing rod. A slot is opened on the inner wall of the arc-shaped groove.

[0008] As can be seen from the above, the ion chromatograph with backwashing self-cleaning provided by this utility model has the technical effect of enabling the device to backwash the filter element to achieve self-cleaning, reducing the accumulation of impurities on the filtration equipment, ensuring the normal operation of the filtration equipment, thereby reducing the impact of clogging impurities on the efficiency of the chromatograph, ensuring that impurities do not contaminate the components of the liquid to be tested, and improving the reliability of the analytical results of the chromatograph. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of an ion chromatograph with backwashing self-cleaning function proposed in this utility model;

[0010] Figure 2 This is a cross-sectional view of the tilting chamber structure of an ion chromatograph with backwashing self-cleaning function proposed in this utility model.

[0011] Figure 3 This is a schematic diagram of the pulse flushing module structure of an ion chromatograph with backflushing self-cleaning proposed in this utility model;

[0012] Figure 4 This is a schematic diagram of the housing frame structure of an ion chromatograph with backwashing self-cleaning function proposed in this utility model.

[0013] Figure 5 This is a schematic diagram of the flip-lock module structure of an ion chromatograph with backwashing self-cleaning function proposed in this utility model.

[0014] In the attached diagram: 1. Instrument body; 2. Support frame; 3. Tilting box; 4. Inlet pipe; 5. Outlet pipe; 6. Filter element; 7. Pulse flushing module; 701. Positioning plate; 702. Sealing plate; 703. Sealing ring; 704. Mounting plate; 705. Hollow slider; 706. High-pressure nozzle; 707. Linear motor; 708. Transmission pipe; 709. Adapter; 710. Deflection plate; 711. Rotation motor; 712. Capacitor. 713. Storage frame; 714. Pressurization chamber; 715. Rubber plate; 716. Inclined groove; 717. Spring 1; 718. Guide tube; 809. Flip locking module; 8001. Rotating shaft; 801. Rotating plate; 802. Limiting rod; 803. Stabilizing rod; 804. Spring 2; 805. Arc groove; 806. Slot; 807. Coil spring; 808. Annular frame; 810. Airbag 1; 811. Positioning piece; 812. Airbag 2. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] The ion chromatograph disclosed in this utility model has a backwashing self-cleaning function and is mainly applied to scenarios where existing ion chromatographs lack effective self-cleaning measures.

[0017] Reference Figures 1-5 An ion chromatograph with backwashing self-cleaning function includes an instrument body 1. A support frame 2 is bolted to the upper side of the instrument body 1. A tilting box 3 is mounted on the support frame 2. Two circular holes are formed on the outside of the tilting box 3, and an inlet pipe 4 and an outlet pipe 5 are bolted into these holes respectively. The end of the outlet pipe 5 away from the tilting box 3 is connected to the instrument body 1. A filter element 6 is installed inside the tilting box 3. A pulse flushing module 7 is located below the filter element 6. A tilting locking module 8 is mounted on the support frame 2. Block 7 includes a pressurizing chamber 713, a guide pipe 717 is provided at the bottom of the pressurizing chamber 713, a deflection plate 710 is provided on the outside of the pressurizing chamber 713, a rubber plate 714 is connected to the bottom of the deflection plate 710 by bolts, a sloping groove 715 is provided at the bottom of the rubber plate 714, the inner wall of the sloping groove 715 is fitted with the outside of the pressurizing chamber 713, and an adapter 709 is provided on the deflection plate 710, the adapter 709 is connected to the pressurizing chamber 713, and a high-pressure nozzle 706 is provided above the adapter 709.

[0018] Specifically, the device utilizes the pulse flushing module 7 to backwash the filter element 6, thereby achieving self-cleaning, reducing the accumulation of impurities on the filtration equipment, ensuring the normal operation of the filtration equipment, reducing the impact of clogging impurities on the efficiency of the chromatograph, ensuring that impurities do not contaminate the components of the liquid to be tested, and improving the reliability of the chromatograph's analytical results.

[0019] Reference Figure 3 and Figure 4In a preferred embodiment, the bottom of the tilting box 3 has a circular opening, the inner wall of which is slidably connected to the outside of the guide pipe 717. A receiving frame 712 is slidably connected to the outside of the pressurizing chamber 713. The bottom of the receiving frame 712 is bolted to the bottom inner wall of the tilting box 3. A spring 716 is bolted to the bottom of the pressurizing chamber 713, and the end of the spring 716 away from the pressurizing chamber 713 is bolted to the bottom inner wall of the tilting box 3. A rotating motor 711 is located below the deflection plate 710. The bottom of the rotating motor 711 is bolted to the bottom inner wall of the tilting box 3. The output end of the rotating motor 711 is connected to the bottom of the deflection plate 710 via a coupling. A positioning plate 701 is bolted to the inner wall of the tilting box 3. A rectangular frame is formed on the positioning plate 701, and a dense... A sealing ring 703 is bolted to the upper side of a positioning plate 701. A sealing plate 702 is rotatably connected to the upper side of the positioning plate 701 via a bearing. The bottom of the sealing plate 702 fits against the upper side of the sealing ring 703. An mounting plate 704 is bolted to the inner wall of the tilting box 3. A sliding groove is provided on the mounting plate 704. A hollow slider 705 is slidably connected in the sliding groove. The inner wall of the hollow slider 705 is bolted to the outside of a high-pressure nozzle 706. A transmission pipe 708 is bolted to the bottom of the high-pressure nozzle 706. The end of the transmission pipe 708 away from the high-pressure nozzle 706 is bolted to the upper side of an adapter 709. A linear motor 707 is bolted to the upper side of the mounting plate 704. The output end of the linear motor 707 is bolted to the outside of the hollow slider 705.

[0020] In specific application scenarios, the pulse flushing module 7 is mainly suitable for the pulse flushing stage in the pulse flushing process. That is, the pulse flushing module 7 uses the pressurized chamber 713, rubber plate 714, deflection plate 710 and high-pressure nozzle 706 to enable the device to perform pulse-type backwashing on the filter element 6. Through sudden, high-velocity pulses, turbulence or strong disturbances are generated in the pipeline, which effectively cleans stubborn impurities inside the filter element 6 that are difficult to reach under laminar flow, significantly shortens the cleaning time, and improves work efficiency and instrument utilization.

[0021] Reference Figure 5In a preferred embodiment, the flip-lock module 8 includes two symmetrical rotating shafts 801. The rotating shafts 801 are bolted to the side opposite to the flip box 3. The support frame 2 has two symmetrical slots, the inner walls of which are rotatably connected to the outside of the rotating shafts 801 via bearings. The outside of the support frame 2 has a groove, the inner wall of which is bolted to a coil spring 808. The end of the coil spring 808 away from the groove is bolted to the outside of one of the rotating shafts 801. The outside of the rotating shaft 801 on the same side as the coil spring 808 is rotatably connected to an annular frame 809 via a bearing. The annular frame 809 is bolted to the side opposite to the outside of the support frame 2. The inner wall of the annular frame 809 is bolted to a positioning piece 811. The positioning piece 811 has a slot, the inner wall of which is bolted to an airbag 810. One end of the airbag 810 is bolted to a push-pull plate, the outer side of which is connected to the annular frame 801. The inner wall of the 9 is slidably connected. The side of the push-pull plate away from the annular frame 809 is bolted to a rotating plate 802. The side of the rotating plate 802 opposite to the rotating shaft 801 is bolted. The end of the airbag 810 away from the push-pull plate is bolted to an airbag 812. A notch is provided on the rotating plate 802. A limit rod 803 is engaged in the notch. The limit rod 803 is bolted to the side of the support frame 2 opposite to it. A reserved groove is provided on the rotating plate 802. A stabilizing rod 804 is slidably connected in the reserved groove. A spring 805 surrounds the outside of the stabilizing rod 804. One end of the spring 805 is bolted to the outside of the stabilizing rod 804, and the other end is bolted to the outside of the rotating plate 802. An arc-shaped groove 806 is provided on the side of the support frame 2 near the rotating plate 802. The inner wall of the arc-shaped groove 806 is slidably connected to the outside of the stabilizing rod 804. A slot 807 is provided on the inner wall of the arc-shaped groove 806.

[0022] In specific application scenarios, the flip-lock module 8 is mainly used in the flip-locking process. The flip-lock module 8 uses a coil spring 808, a rotating shaft 801, a limit rod 803, a stabilizing rod 804, a second spring 805, and a slot 807 to keep the flip box 3 in its original position after flipping 180 degrees. This ensures that the main contact part between the filter element 6 and the impurities is kept at the bottom, significantly improving the separation effect of impurities from the filter element 6 during rinsing. It also ensures that the rinsed impurities do not adhere to the inner wall of the flip box 3. The airbag 810, the positioning plate 811, and the second airbag 812 allow the device to control the rotation and reset speed of the airbag 810 by the resistance of the flow between the two gas containers with different cross-sectional areas. This avoids the violent vibration and impact caused by the rapid reset of the rotating shaft 801, reduces the risk of structural damage from impact, and improves the service life of the device.

[0023] Working principle: The liquid to be tested enters the tilting chamber 3 through the inlet pipe 4, and after being filtered by the filter element 6, it flows into the instrument body 1 through the outlet pipe 5. After long-term use, the filtered impurities will accumulate in the filter element 6. Stop the inlet pipe 4 from continuing to deliver the liquid to be tested, disconnect the inlet pipe 4 from the liquid container, and overcome the torque of the coil spring 808 to rotate the rotating plate 802. This causes the push-pull plate to overcome the flow resistance from airbag one 810 to airbag two 812, forcing the air in airbag one 810 into airbag two 812. When the stabilizing rod 804 rotates to the insertion position... After the slot 807 is positioned, spring 2 805 pushes the stabilizer 804 into the slot 807, completing the locking. After backwashing, the stabilizer 804 is pulled out of the slot 807 by overcoming the elastic force of spring 2 805. The coil spring 808 drives the rotating shaft 801 to rotate, thereby releasing the air in the second airbag 812 to the first airbag 810. Similarly, under the air resistance of the flow, the rotating shaft 801 slowly drives the rotating plate 802 to rotate back to its original position until it is blocked by the limit rod 803. The flipping of the flipping box 3 is completed, and the flushing water is discharged through the guide pipe 717. The water is fed into the pressurizing chamber 713. At this time, the rubber plate 714 is in contact with the pressurizing chamber 713, and the water pressure in the pressurizing chamber 713 increases. The rotating motor 711 is started, and the rotating motor 711 drives the deflection plate 710 to reciprocate at a small angle, so that the pressurizing chamber 713 is inserted into the inclined groove 715. Under the push of the spring 716, the pressurizing chamber 713 and the inclined groove 715 are engaged and connected to the adapter 709. Pressurized water is delivered from the adapter 709 to the hollow slider 705 and sprayed out at high speed through the high-pressure nozzle 706. The closed plate 70 after flipping is then... 2. Under gravity, the filter element 6 is opened by rotating, allowing the high-pressure nozzle 706 to spray pressurized water onto the filter element 6. Driven by the rotating motor 711, a pulse-type backwash is performed. The linear motor 707 is started, and its output drives the high-pressure nozzle 706 to move on the mounting plate 704. The impurities washed off will flow to the outside through the inlet pipe 4 with the flushing water. After flushing, the inlet pipe 4 is connected to the container of the liquid to be tested and the flip box 3 is flipped back. At this time, the sealing plate 702 re-closes with the sealing ring 703 due to gravity.

[0024] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. An ion chromatograph with backflush self-cleaning, comprising an instrument body (1), characterized in that, The upper side of the instrument body (1) is fixedly connected with a support frame (2), the support frame (2) is provided with a turnover box (3), two round holes are formed in the outer part of the turnover box (3), an inlet pipe (4) and an outlet pipe (5) are fixedly connected in the round holes respectively, the end of the outlet pipe (5) away from the turnover box (3) is communicated with the instrument body (1), a filter core (6) is arranged in the turnover box (3), a pulse flushing module (7) is arranged below the filter core (6), a turnover locking module (8) is arranged on the support frame (2), the pulse flushing module (7) comprises a pressurizing cavity (713), a flow guide pipe (717) is arranged at the bottom of the pressurizing cavity (713), a deflection plate (710) is arranged on the outer part of the pressurizing cavity (713), the bottom of the deflection plate (710) is fixedly connected with a rubber plate (714), an inclined groove (715) is formed in the bottom of the rubber plate (714), the inner wall of the inclined groove (715) is embedded with the outer part of the pressurizing cavity (713), an adapter (709) is arranged on the deflection plate (710), the adapter (709) is communicated with the pressurizing cavity (713), and a high-pressure nozzle (706) is arranged above the adapter (709).

2. The ion chromatograph with backflush self-cleaning according to claim 1, characterized in that, The bottom of the turnover box (3) is provided with a round opening, the inner wall of the round opening is slidably connected with the outer part of the flow guide pipe (717), the outer part of the pressurizing cavity (713) is slidably connected with a containing frame (712), the bottom of the containing frame (712) is fixedly connected with the inner wall of the bottom of the turnover box (3), and the bottom of the pressurizing cavity (713) is fixedly connected with a spring (716), one end of the spring (716) away from the pressurizing cavity (713) is fixedly connected with the inner wall of the bottom of the turnover box (3).

3. The ion chromatograph with backflush self-cleaning according to claim 2, characterized in that, The bottom of the deflection plate (710) is provided with a rotating motor (711), the bottom of the rotating motor (711) is fixedly connected with the inner wall of the bottom of the turnover box (3), the output end of the rotating motor (711) is connected with the bottom of the deflection plate (710) through a shaft coupling, the inner wall of the turnover box (3) is fixedly connected with a positioning plate (701), a rectangular frame is formed in the positioning plate (701), a sealing ring (703) is arranged on the outer part of the rectangular frame, the bottom of the sealing ring (703) is fixedly connected with the upper side of the positioning plate (701), the upper side of the positioning plate (701) is movably connected with a closing plate (702), and the bottom of the closing plate (702) is attached to the upper side of the sealing ring (703).

4. The ion chromatograph with backflush self-cleaning of claim 1, wherein, The inner wall of the turnover box (3) is fixedly connected with a mounting plate (704), a sliding groove is formed in the mounting plate (704), a hollow sliding block (705) is slidably connected in the sliding groove, the inner wall of the hollow sliding block (705) is fixedly connected with the outer part of the high-pressure nozzle (706), the bottom of the high-pressure nozzle (706) is fixedly connected with a transmission pipe (708), one end of the transmission pipe (708) away from the high-pressure nozzle (706) is fixedly connected with the upper side of the adapter (709), the upper side of the mounting plate (704) is fixedly connected with a linear motor (707), and the output end of the linear motor (707) is fixedly connected with the outer part of the hollow sliding block (705).

5. The ion chromatograph with backflush self-cleaning of claim 1, wherein, The turnover locking module (8) comprises two symmetrical rotating shafts (801) fixedly connected to opposite sides of the turnover box (3), two symmetrical notches are formed in the support frame (2), the inner walls of the notches are movably connected to the outer portions of the rotating shafts (801), a recess is formed in the outer portion of the support frame (2), a coil spring (808) is fixedly connected to the inner wall of the recess, one end of the coil spring (808) away from the recess is fixedly connected to the outer portion of one of the rotating shafts (801), and the outer portion of the rotating shaft (801) on the same side of the coil spring (808) is movably connected with a ring-shaped frame (809), and the opposite side of the ring-shaped frame (809) to the outer portion of the support frame (2) is fixedly connected.

6. The ion chromatograph with backflush self-cleaning according to claim 5, characterized in that, The inner wall of the ring-shaped frame (809) is fixedly connected with a positioning sheet (811), a slot hole is formed in the positioning sheet (811), the inner wall of the slot hole is fixedly connected with a gas bag (810), one end of the gas bag (810) is fixedly connected with a push-pull plate, the outer portion of the push-pull plate is slidably connected to the inner wall of the ring-shaped frame (809), the side of the push-pull plate away from the ring-shaped frame (809) is fixedly connected with a rotating plate (802), the opposite side of the rotating plate (802) to the rotating shaft (801) is fixedly connected, and the end of the gas bag (810) away from the push-pull plate is fixedly connected with a gas bag (812).

7. The ion chromatograph with backflush self-cleaning according to claim 6, characterized in that, A notch is formed in the rotating plate (802), the notch is connected with a limiting rod (803), the opposite side of the limiting rod (803) to the support frame (2) is fixedly connected, a reserved slot is formed in the rotating plate (802), a stabilizing rod (804) is slidably connected in the reserved slot, the outer portion of the stabilizing rod (804) is surrounded with a spring (805), one end of the spring (805) is fixedly connected to the outer portion of the stabilizing rod (804), the other end is fixedly connected to the outer portion of the rotating plate (802), the side of the support frame (2) close to the rotating plate (802) is formed with an arc-shaped slot (806), the inner wall of the arc-shaped slot (806) is slidably connected to the outer portion of the stabilizing rod (804), and the inner wall of the arc-shaped slot (806) is formed with a slot (807).

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