Environmental testing water sample filtering device

Abstract

The invention discloses an environmental detection water sample filtering device, which relates to the technical field of water sample filtering, and aims to solve the technical problem that impurities in environmental detection water samples are easily and rapidly accumulated on the surface of the filter screen, causing the filter screen to be blocked, comprising a top cover, a filter cartridge detachably connected to the bottom of the top cover, an insert cartridge arranged at the bottom of the filter cartridge, a water sample cartridge arranged at the bottom of the insert cartridge, a transmission assembly arranged at the top of the top cover, a filter screen arranged inside the filter cartridge, a filter hole cleaning assembly arranged at the bottom of the filter screen, a surface cleaning assembly arranged on the top surface of the filter screen, a rotating rod passing through the filter screen from top to bottom and movably connected, and the filter hole cleaning assembly and the surface cleaning assembly are linked with the transmission assembly through the rotating rod. The invention has the advantages of quickly and continuously cleaning and centrally managing the impurities on the filter holes and the upper surface of the filter screen, avoiding the filtration interruption caused by the clogging of the filter screen, and improving the filtration efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of water sample filtering, and more specifically to a water sample filtering device for environmental detection. Background Art

[0002] Environmental testing water samples refer to representative water samples collected from specific environmental water bodies in order to evaluate and monitor environmental quality. These water samples can reflect the physical, chemical and biological characteristics of the collected water bodies;

[0003] The environmental testing water sample filtration device is an indispensable and important tool in environmental monitoring work. It can effectively remove impurities and particulate matter in water samples and provide pure samples for subsequent precise analysis and testing.

[0004] In the existing filtering devices, filtering through a filter is a common method for filtering environmental testing water samples. The environmental testing water sample is slowly poured into a filter or funnel and filtered through the filter. The environmental testing water sample may contain a large amount of suspended particles, mud and other impurities, which can easily cause the impurities to accumulate rapidly on the surface of the filter, causing the filter to be blocked, affecting the filtering effect, and even making it impossible to continue filtering. In view of this, we propose an environmental testing water sample filtering device. Summary of the invention

[0005] The purpose of the present invention is to provide an environmental testing water sample filtering device to solve the technical problem that impurities in the environmental testing water sample are prone to accumulate rapidly on the filter surface, causing the filter to be blocked.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an environmental detection water sample filtering device, comprising a top cover, wherein a filter cartridge is detachably connected to the bottom of the top cover, an insert cartridge is arranged at the bottom of the filter cartridge, and a water sample cartridge is arranged at the bottom of the insert cartridge; a transmission assembly and a water sample injection port are arranged at the top of the top cover; a filter screen is arranged inside the filter cartridge; a filter hole cleaning assembly is arranged at the bottom of the filter screen, and the filter hole cleaning assembly is used to clean impurities in the filter holes of the filter screen from the bottom to the upper surface of the filter screen; a surface cleaning assembly is arranged on the top surface of the filter screen, and the surface cleaning assembly is used to centrally clean impurities on the surface of the filter screen; a rotating rod is passed through the filter screen from top to bottom and movably connected, and the filter hole cleaning assembly and the surface cleaning assembly are linked with the transmission assembly through the rotating rod; a downward pressure assembly is arranged above the surface cleaning assembly, and the downward pressure assembly is used to continuously generate downward pressure on the surface cleaning assembly, so that the surface cleaning assembly can always keep in a state of being closely attached to the top surface of the filter screen.

[0007] Preferably, the circumferential inner wall of the top cover is threadedly connected to the upper end of the circumferential outer wall of the filter cartridge, and the bottom of the filter cartridge is detachably connected to the top surface of the insert cartridge by bolts.

[0008] Preferably, the transmission assembly includes a motor arranged on the top surface of the top cover, the output end of the motor is connected to a rotating shaft, and a clamping block is provided on the circumferential side wall of the rotating shaft; a groove hole matching with the rotating shaft is provided on the top surface of the rotating rod, and a clamping groove matching with the clamping block is provided on the circumferential side wall of the rotating rod, and the rotating shaft is plug-fitted with the rotating rod through the groove hole.

[0009] Preferably, the filter screen is a disc structure made of stainless steel, and the filter screen is provided with a plurality of filter holes of a circular structure arranged in a circular path array from top to bottom.

[0010] Preferably, the filter hole cleaning assembly includes a fixed frame fixedly connected to the circumferential side wall of the rotating rod, the fixed frame includes a fixed rod, one end of the fixed rod is movably connected to a conical roller, the other end of the conical roller is fixedly connected to a gear, the side wall of the gear is movably connected to a curved rod, and the other end of the curved rod is provided with a fixed block; the circumferential outer wall of the filter cartridge is provided with a fixed ring plate, the top surface of the fixed ring plate is provided with a wheel track 1, the inner side wall of the fixed ring plate is provided with a wheel track 2, the bottom surface of the fixed ring plate is provided with a tooth groove matching the gear, and the gear is movably engaged with the tooth groove; the fixed block includes a wheel frame arranged above the fixed ring plate, and the wheel frame is provided with a roller 1 matching the wheel track 1 and a roller 2 matching the wheel track 2.

[0011] Preferably, a plurality of cleaning columns corresponding to the inner cavities of the filter holes of the filter screen are provided on the circumferential side wall of the cone drum, and the cleaning columns are used to squeeze out impurities in the inner cavities of the filter holes of the filter screen.

[0012] Preferably, the surface cleaning component includes a connecting block fixedly connected to the circumferential side wall of the rotating rod, the side wall of the connecting block is connected to a shovel plate and a connecting plate, a sewage inlet channel is formed between the shovel plate and the connecting plate, and the shovel plate is a flat wedge-shaped structure; the ends of the shovel plate and the connecting plate are connected to a sewage baffle plate, the side wall of the sewage baffle plate is provided with two limit blocks, the side wall of the connecting block is provided with two limit blocks symmetrical to the side wall of the sewage baffle plate, a sewage storage box is provided between the connecting block and the sewage baffle plate, and a plurality of grooves matching the shape of the limit blocks are provided at the bottom of the sewage storage box, and the sewage storage box is plugged into and matched with the limit blocks through the grooves; the inner cavity of the sewage inlet channel is connected to the inner cavity of the sewage storage box;

[0013] The side wall of the dirt storage box is provided with mesh holes for discharging water inside the dirt storage box.

[0014] Preferably, the pressing assembly includes a fixed column fixedly connected to the circumferential side wall of the rotating rod, and the end of the fixed column is movably connected to a rotating wheel; the circumferential inner wall of the filter cartridge is provided with convex strip 1 and convex strip 2, and the convex strip 1 and the convex strip 2 are connected to the circumferential inner wall of the filter cartridge through a plurality of curved blocks; the rotating wheel is arranged between the convex strip 1 and the convex strip 2, and the rotating wheel forms a sliding fit with the bottom surface of the convex strip 1 and the top surface of the convex strip 2.

[0015] Preferably, two thin columns are arranged on the fixed column, and the two thin columns are arranged with the same structure; a slide cylinder 1 and a slide cylinder 2 are slidably connected to the circumferential outer wall of one of the thin columns, the bottom of the slide cylinder 1 is rotatably connected to a support rod, the bottom of the support rod is rotatably connected to a pressure plate, one side wall of the slide cylinder is connected to a spring, the spring is sleeved on the circumferential side wall of the thin column, and the other end of the spring is connected to the side wall of the fixed column; a structure symmetrical to the slide cylinder 1 is arranged on the slide cylinder 2; the bottom surface of the pressure plate is arranged to match the curved surface structure of the top surface of the connecting plate, the bottom surface of the pressure plate is arranged to have an insertion plate, the top surface of the connecting plate is provided with a slot, and the insertion plate forms a plug-in fit with the slot.

[0016] Preferably, the method for using the environmental detection water sample filtering device comprises the following steps:

[0017] S1, filtering operation, pouring the environmental test water sample into the filter cartridge from the water sample injection port on the top cover, filtering the impurities in the environmental test water sample through the filter screen, and allowing the pure water sample to flow into the water sample cartridge from the insert below the filter screen;

[0018] S2, cleaning and rotating operation, in the process of filtering the environmental test water sample, by turning on the motor, the shaft at the output end of the motor drives the rotating rod to rotate, and the rotating rod rotates to drive the filter hole cleaning component and the surface cleaning component to rotate around the rotating rod;

[0019] S3, filter hole cleaning operation, when the filter hole cleaning assembly rotates around the rotating rod, the fixed frame and the fixed rod rotate around the rotating rod, and the rollers 1 and 2 slide on the wheel rails 1 and 2 respectively, so that the bent rod and the fixed frame rotate synchronously around the rotating rod, and the cone roller and the gear are driven to rotate synchronously around the rotating rod through the fixed rod and the bent rod. During the rotation of the gear around the rotating rod, the gear is meshed with the tooth groove, so that the gear rotates while rotating around the rotating rod, driving the cone roller to rotate, so that the cone roller can roll against the bottom surface of the filter screen, so that the cleaning column on the cone roller is inserted into the filter hole cavity of the filter screen one by one, and the impurities in the filter hole cavity are squeezed out and enter the upper surface of the filter screen;

[0020] S4, surface cleaning operation. When the surface cleaning assembly rotates around the rotating rod, the shovel plate can slide on the upper surface of the filter screen, and cooperate with the cleaning column to squeeze the impurities in the inner cavity of the filter hole into the upper surface of the filter screen. The impurities will gradually accumulate on the inclined surface of the shovel plate and be surrounded by the dirt baffle plate. When the shovel plate rotates around the rotating rod, it can bring the accumulated impurities into the dirt inlet channel and enter the dirt storage box through the dirt inlet channel, which is convenient for cleaning and centralized management of the impurities on the upper surface of the filter screen, keeping the upper surface of the filter screen always clean;

[0021] S5. After the filtration is completed, the impurities in the filter holes of the filter are cleaned from the bottom to the upper surface of the filter through the filter hole cleaning component, and the impurities on the surface of the filter are cleaned and centrally managed using the surface cleaning component, so that the environmental testing water sample can complete the filtration operation smoothly. After completion, just pull the dirt storage box out from the limit block and clean the impurities in the dirt storage box.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention achieves a synchronous movement effect by designing a filter hole cleaning component and a surface cleaning component to be linked with a transmission component through a rotating rod. After the filter hole cleaning component cleans the impurities in the filter holes of the filter from the bottom to the upper surface of the filter, the surface cleaning component cleans the impurities on the upper surface of the filter and centrally manages them. Through mutual cooperation, the filter holes and impurities on the upper surface of the filter can be quickly and continuously cleaned and centrally managed, thereby avoiding filtration interruption caused by filter blockage and improving filtration efficiency.

[0024] The cam is driven by the gear of the wheel mechanism and the gear of the wheel mechanism is engaged with the gear of the wheel mechanism, so that the cam is engaged with the gear of the wheel mechanism and the gear of the wheel mechanism is engaged with the gear of the wheel mechanism, so that the cam is engaged with the gear of the wheel mechanism and the gear of the wheel mechanism is engaged with the gear of the wheel mechanism.

[0025] 3. The present invention can also enable the shovel plate to slide on the upper surface of the filter screen when the surface cleaning component rotates around the rotating rod, and cooperate with the cleaning column to squeeze the impurities in the inner cavity of the filter hole into the upper surface of the filter screen. The impurities will gradually accumulate on the inclined surface of the shovel plate and be surrounded by the dirt baffle plate. When the shovel plate rotates around the rotating rod, it can bring the accumulated impurities into the sewage inlet channel and enter the sewage storage box through the sewage inlet channel, which is convenient for cleaning and centralized management of the impurities on the upper surface of the filter screen, keeping the upper surface of the filter screen always clean, and avoiding the accumulation of impurities on the upper surface of the filter screen, which easily causes the filter screen to be blocked and affects the filtering effect.

[0026] 4. The present invention ensures the stability and firmness of the fixed column by fixing one end of the fixed column to the rotating rod and sliding the other end between the convex strips 1 and 2 through the rotating wheel. The slide cylinder 1 and the slide cylinder 2 are respectively subjected to the elastic force of the corresponding springs, so that the slide cylinder 1 and the slide cylinder 2 tend to slide toward each other and respectively drive the support rods at their bottom to move vertically, so that the pressure plate is subjected to the pressure of the support rods, which ensures that the pressure plate can always be pressed down on the connecting plate, so that the shovel plate can always keep close to the upper surface of the filter screen and perform a sliding shovel action, further improving the cleaning effect of the shovel plate on the impurities on the upper surface of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the split structure of the top cover and the filter cartridge of the present invention;

[0030] Figure 4 It is a schematic diagram of the top cover and the bottom structure of the filter cartridge of the present invention;

[0031] Figure 5 It is a schematic diagram of the cross-section structure of the top cover, the filter cartridge and the insert cartridge of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the bottom and inner wall of the filter cartridge of the present invention;

[0033] Figure 7 It is a schematic diagram of the filter structure of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the filter hole cleaning component of the present invention;

[0035] Fig. 9 It is an enlarged schematic diagram of the cutaway structure of the fixing ring plate of the present invention;

[0036] Fig.10It is a schematic diagram of the structure of the surface cleaning component and the pressing component of the present invention;

[0037] Fig.11 It is an enlarged schematic diagram of the cross-section structure of the convex strip of the present invention;

[0038] Fig.12 It is a schematic diagram of the split structure of the surface cleaning component and the downward pressing component of the present invention from a first perspective;

[0039] Fig.13 This is a schematic diagram of the second perspective of the split structure of the surface cleaning component and the downward pressure component of the present invention.

[0040] Description of the numbers in the figure:

[0041] 1. Top cover; 2. Filter cartridge; 3. Insert cartridge; 4. Water sample cartridge; 5. Transmission assembly; 6. Filter screen; 7. Filter hole cleaning assembly; 8. Surface cleaning assembly; 9. Press down assembly;

[0042] 101. Water sample injection port;

[0043] 201, fixed ring plate; 202, wheel rail 1; 203, wheel rail 2; 204, tooth groove; 205, convex strip 1; 206, convex strip 2; 207, curved block;

[0044] 501, motor; 502, rotating shaft; 503, clamping block;

[0045] 601, rotating rod; 602, slot; 603, card slot;

[0046] 701, fixed frame; 702, fixed rod; 703, cone roller; 7031, cleaning column; 704, gear; 705, curved rod; 706, fixed block; 707, wheel frame; 708, roller one; 709, roller two;

[0047] 801, connecting block; 802, shovel plate; 803, connecting plate; 804, sewage inlet channel; 805, sewage baffle plate; 806, limit block; 807, sewage storage box; 8071, mesh; 808, groove; 809, slot;

[0048] 901, fixed column; 902, rotating wheel; 903, thin column; 904, slide cylinder 1; 905, slide cylinder 2; 906, support rod; 907, pressure plate; 908, spring; 909, plug plate. DETAILED DESCRIPTION

[0049] like Figures 1 to 13As shown, the present invention relates to an environmental detection water sample filtering device, including a top cover 1, a filter cartridge 2 is detachably connected to the bottom of the top cover 1, an insert cylinder 3 is arranged at the bottom of the filter cartridge 2, a water sample cylinder 4 is arranged at the bottom of the insert cylinder 3, the water sample cylinder 4 is used to receive the filtered environmental detection water sample, and the side wall of the water sample cylinder 4 is provided with a transparent glass material for conveniently observing the condition of the water sample inside the water sample cylinder 4.

[0050] In the embodiment of the present invention, a transmission assembly 5 and a water sample injection port 101 are arranged on the top of the top cover 1; a filter screen 6 is arranged inside the filter cartridge 2; a filter hole cleaning assembly 7 is arranged at the bottom of the filter screen 6, and the filter hole cleaning assembly 7 is used to clean the impurities in the filter holes of the filter screen 6 from the bottom to the upper surface of the filter screen 6; a surface cleaning assembly 8 is arranged on the top surface of the filter screen 6, and the surface cleaning assembly 8 is used to centrally clean the impurities on the upper surface of the filter screen 6; the filter screen 6 is penetrated from top to bottom and movably connected with a rotating rod 601, and the filter hole cleaning assembly 7 and the surface cleaning assembly 8 are linked with the transmission assembly 5 through the rotating rod 601, and the transmission assembly 5 includes a motor 50 arranged on the top surface of the top cover 1 1. The output end of the motor 501 is connected with a rotating shaft 502, and a clamping block 503 is arranged on the circumferential side wall of the rotating shaft 502. A slot 602 matching with the rotating shaft 502 is provided on the top surface of the rotating rod 601, and a clamping slot 603 matching with the clamping block 503 is provided on the circumferential side wall of the rotating rod 601. The rotating shaft 502 is plugged into and matched with the rotating rod 601 through the slot 602. In the process of filtering the environmental detection water sample of the present invention, by turning on the motor 501, the rotating shaft 502 at the output end of the motor 501 drives the rotating rod 601 to rotate, and the rotating rod 601 rotates to drive the filter hole cleaning component 7 and the surface cleaning component 8 to rotate around the rotating rod 601.

[0051] In an embodiment of the present invention, the filter screen 6 is a disc structure made of stainless steel, and the filter screen 6 is provided with a plurality of filter holes of a circular structure arranged in a circular path array from top to bottom. The filter hole cleaning assembly 7 includes a fixed frame 701 fixedly connected to the circumferential side wall of the rotating rod 601, and the fixed frame 701 includes a fixed rod 702, and one end of the fixed rod 702 is movably connected to a cone roller 703, and the other end of the cone roller 703 is fixedly connected to a gear 704, and the side wall of the gear 704 is movably connected to a curved rod 705, and the other end of the curved rod 705 is provided with a fixed block 706; a fixed ring plate 201 is provided on the circumferential outer wall of the filter cartridge 2, and a wheel track 1 202 is provided on the top surface of the fixed ring plate 201, and a wheel track 203 is provided on the inner side wall of the fixed ring plate 201, and a tooth groove matching the gear 704 is provided on the bottom surface of the fixed ring plate 201 204, the gear 704 is movably meshed with the tooth groove 204; the fixed block 706 includes a wheel frame 707 arranged above the fixed ring plate 201, and the wheel frame 707 is provided with a roller 1 708 matching the wheel rail 1 202 and a roller 2 709 matching the wheel rail 203; the circumferential side wall of the cone drum 703 is provided with a plurality of cleaning columns 7031 corresponding to the filter hole inner cavity of the filter screen 6, and the cleaning columns 7031 are used to squeeze out impurities in the filter hole inner cavity of the filter screen 6; when the filter hole cleaning assembly 7 of the present invention rotates around the rotating rod 601, the fixed frame 701 and the fixed rod 702 rotate around the rotating rod 601, and the roller 1 708 and the roller 2 709 slide on the wheel rail 1 202 and the wheel rail 2 203 respectively, so that the curved rod 705 and the fixed frame 701 rotate synchronously around the rotating rod 601, The conical roller 703 and the gear 704 are driven to rotate synchronously around the rotating rod 601 through the fixed rod 702 and the curved rod 705. During the rotation of the gear 704 around the rotating rod 601, the gear 704 is meshed by the tooth groove 204, so that the gear 704 rotates around the rotating rod 601 and at the same time rotates around the rotating rod 601, driving the conical roller 703 to rotate, so that the conical roller 703 can roll against the bottom surface of the filter screen 6, so that the cleaning column 7031 on the conical roller 703 is inserted into the filter hole cavity of the filter screen 6 one by one, and the impurities in the filter hole cavity are squeezed out and enter the upper surface of the filter screen 6. The conical roller 703 can continuously roll against the bottom surface of the filter screen 6, so that the cleaning column 7031 can continuously squeeze out the impurities in the filter hole cavity, thereby ensuring that the filter holes of the filter screen 6 can always remain unobstructed during the filtration of environmental detection water samples, thereby improving the filtration efficiency and effect.

[0052] As another embodiment of the present invention, the surface cleaning component 8 includes a connecting block 801 fixedly connected to the circumferential side wall of the rotating rod 601, the side wall of the connecting block 801 is connected with a shovel plate 802 and a connecting plate 803, a sewage inlet channel 804 is formed between the shovel plate 802 and the connecting plate 803, and the shovel plate 802 is a flat wedge-shaped structure; the ends of the shovel plate 802 and the connecting plate 803 are connected with a sewage baffle plate 805, the side wall of the sewage baffle plate 805 is provided with two limit blocks 806, the side wall of the connecting block 801 is provided with two limit blocks 806 symmetrical to the side wall of the sewage baffle plate 805, a sewage storage box 807 is provided between the connecting block 801 and the sewage baffle plate 805, and a plurality of grooves 808 matching the shape of the limit blocks 806 are provided at the bottom of the sewage storage box 807, and the sewage storage box 807 is plug-fitted with the limit blocks 806 through the grooves 808;

[0053] The inner cavity of the sewage inlet channel 804 is connected with the inner cavity of the sewage storage box 807; the side wall of the sewage storage box 807 is provided with a mesh 8071 for discharging water inside the sewage storage box 807; when the surface cleaning component 8 of the present invention rotates around the rotating rod 601, the shovel plate 802 can slide on the upper surface of the filter screen 6, and cooperate with the sewage cleaning column 7031 to squeeze the impurities in the inner cavity of the filter hole into the upper surface of the filter screen 6, and the impurities will gradually accumulate on the inclined surface of the shovel plate 802, and be surrounded by the sewage baffle plate 805, so that when the shovel plate 802 rotates around the rotating rod 601, it can bring the accumulated impurities into the sewage inlet channel 804, and enter the sewage storage box 807 through the sewage inlet channel 804, so as to facilitate the cleaning and centralized management of the impurities on the upper surface of the filter screen 6, keep the upper surface of the filter screen 6 always clean, and avoid the accumulation of impurities on the upper surface of the filter screen 6, which may easily cause the filter screen to be blocked and affect the filtering effect.

[0054] As another embodiment of the present invention, the circumferential inner wall of the top cover 1 is threadedly connected to the upper end of the circumferential outer wall of the filter cartridge 2, and the bottom of the filter cartridge 2 is detachably connected to the top surface of the insert cylinder 3 by bolts. The present invention designs a detachable structure to facilitate disassembly of the device for internal cleaning and maintenance when the device is not in use.

[0055] As another embodiment of the present invention, a downward pressure component 9 is arranged above the surface cleaning component 8, and the downward pressure component 9 is used to continuously generate downward pressure on the surface cleaning component 8, so that the surface cleaning component 8 can always maintain a state of being closely attached to the top surface of the filter screen 6; the downward pressure component 9 includes a fixed column 901 fixedly connected to the circumferential side wall of the rotating rod 601, and the end of the fixed column 901 is movably connected to a rotating wheel 902; the circumferential inner wall of the filter cartridge 2 is provided with a convex strip 1 205 and a convex strip 206, and the convex strip 1 205 and the convex strip 206 are connected to the circumferential inner wall of the filter cartridge 2 through a plurality of curved blocks 207 ; The rotating wheel 902 is arranged between the convex strip 1 205 and the convex strip 206, and the rotating wheel 902 forms a sliding fit with the bottom surface of the convex strip 1 205 and the top surface of the convex strip 206; Two thin columns 903 are arranged on the fixed column 901, and the two thin columns 903 are provided with the same structure; One of the thin columns 903 has a sliding cylinder 1 904 and a sliding cylinder 2 905 slidably connected to the outer wall of the circumference, and the bottom of the sliding cylinder 1 904 is rotatably connected to the support rod 906, and the bottom of the support rod 906 is rotatably connected to the pressure plate 907, and the side wall of the sliding cylinder 1 904 is connected to the spring 908, and the spring 908 is sleeved on the circumference of the thin column 903 The other end of the spring 908 is connected to the side wall of the fixed column 901; the slide cylinder 905 is provided with a structure symmetrical to the slide cylinder 904, the bottom surface of the pressure plate 907 is provided with a curved surface structure matching the top surface shape of the connecting plate 803, the bottom surface of the pressure plate 907 is provided with a plug plate 909, the top surface of the connecting plate 803 is provided with a slot 809, and the plug plate 909 and the slot 809 form a plug-in fit; the present invention ensures that the fixed column 901 is fixedly connected to the rotating rod 601 at one end, and the other end slides between the convex strip 1 205 and the convex strip 206 through the rotating wheel 902, The stability and firmness of 901 are enhanced, and the slide cylinder 1 904 and the slide cylinder 2 905 are respectively subjected to the elastic force of the corresponding spring 908, so that the slide cylinder 1 904 and the slide cylinder 2 905 tend to slide toward each other, and respectively drive the support rod 906 at the bottom thereof to tend to move vertically, so that the pressure plate 907 is subjected to the pressure of the support rod 906, which ensures that the pressure plate 907 can always press down on the connecting plate 803, so that the shovel plate 802 can always keep close to the upper surface of the filter screen 6 and perform a sliding shovel action, thereby further improving the cleaning effect of the shovel plate 802 on the impurities on the upper surface of the filter screen 6.

[0056] Working principle: This embodiment provides an environmental detection water sample filtering device. When in use, the environmental detection water sample is poured into the filter cartridge 2 from the water sample injection port 101 on the top cover 1, and the impurities in the environmental detection water sample are filtered through the filter screen 6, so that the pure water sample flows into the water sample cartridge 4 from the insert tube 3 below the filter screen 6. In the process of filtering the environmental detection water sample, the motor 501 is turned on to make the rotating shaft 502 at the output end of the motor 501 drive the rotating rod 601 to rotate, and the rotating rod 601 rotates to drive the filter hole cleaning component 7 and the surface cleaning component 8 to rotate around the rotating rod 601. When the filter hole cleaning component 7 rotates around the rotating rod 601, the fixed frame 701 and the fixed rod 702 rotate around the rotating rod 601, and the roller 1 708 and the roller 2 709 slide on the wheel rail 1 202 and the wheel rail 2 203 respectively, so that the curved rod 705 and the fixed frame 701 rotate synchronously around the rotating rod 601. The fixed rod 702 and the curved rod 705 drive the cone roller 703 and the gear 704 to rotate synchronously around the rotating rod 601. During the rotation of the gear 704 around the rotating rod 601, the gear 704 is meshed by the tooth groove 204, so that the gear 704 rotates around the rotating rod 601 and rotates at the same time, driving the cone roller 703 to rotate, so that the cone roller 703 can roll against the bottom surface of the filter screen 6, so that the cleaning column 7031 on the cone roller 703 is inserted into the filter hole cavity of the filter screen 6 one by one, and the impurities in the filter hole cavity are squeezed out and enter the upper surface of the filter screen 6. When the surface cleaning component 8 rotates around the rotating rod 601, the shovel plate 802 can slide on the upper surface of the filter screen 6, and cooperate with the cleaning column 7031 to squeeze the impurities in the filter hole cavity into the filter screen 6 The impurities on the upper surface of the shovel plate 802 will gradually accumulate on the inclined surface of the shovel plate 802 and be surrounded by the dirt baffle plate 805, so that when the shovel plate 802 rotates around the rotating rod 601, it can bring the accumulated impurities into the dirt inlet channel 804, and enter the dirt storage box 807 through the dirt inlet channel 804, so as to facilitate the cleaning and centralized management of the impurities on the upper surface of the filter screen 6, and keep the upper surface of the filter screen 6 always clean. The impurities in the filter holes of the filter screen 6 are cleaned from the bottom to the upper surface of the filter screen 6 through the filter hole cleaning component 7, and the impurities on the upper surface of the filter screen 6 are cleaned and centralized by the surface cleaning component 8, so that the environmental detection water sample can complete the filtering operation smoothly. After completion, it is only necessary to pull the dirt storage box 807 out of the limit block 806 to clean the impurities in the dirt storage box 807.

[0057] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A water sample filtering device for environmental detection, characterized in that: It comprises a top cover (1), the bottom of the top cover (1) is detachably connected to a filter cartridge (2), the bottom of the filter cartridge (2) is provided with an insert cartridge (3), and the bottom of the insert cartridge (3) is provided with a water sample cartridge (4); The top of the top cover (1) is provided with a transmission assembly (5) and a water sample injection port (101); A filter screen (6) is arranged inside the filter cartridge (2); A filter hole cleaning component (7) is provided at the bottom of the filter screen (6), and the filter hole cleaning component (7) is used to clean impurities in the filter holes of the filter screen (6) from the bottom to the upper surface of the filter screen (6); The top surface of the filter screen (6) is provided with a surface cleaning component (8), and the surface cleaning component (8) is used to centrally clean impurities on the upper surface of the filter screen (6); The filter screen (6) is penetrated from top to bottom and is movably connected to a rotating rod (601), and the filter hole cleaning component (7) and the surface cleaning component (8) are linked to the transmission component (5) via the rotating rod (601); A downward pressing component (9) is arranged above the surface cleaning component (8), and the downward pressing component (9) is used to continuously generate downward pressure on the surface cleaning component (8), so that the surface cleaning component (8) can always remain in close contact with the top surface of the filter screen (6); The filter hole cleaning assembly (7) comprises a fixing frame (701) fixedly connected to the circumferential side wall of the rotating rod (601), the fixing frame (701) comprising a fixing rod (702), one end of the fixing rod (702) being movably connected to a cone roller (703), the other end of the cone roller (703) being fixedly connected to a gear (704), the side wall of the gear (704) being movably connected to a curved rod (705), and the other end of the curved rod (705) being provided with a fixing block (706); The filter cartridge (2) is provided with a fixed ring plate (201) on the circumferential outer wall thereof, a wheel track 1 (202) is provided on the top surface of the fixed ring plate (201), a wheel track 2 (203) is provided on the inner side wall of the fixed ring plate (201), a tooth groove (204) matching the gear (704) is provided on the bottom surface of the fixed ring plate (201), and the gear (704) is movably meshed with the tooth groove (204); The fixed block (706) comprises a wheel frame (707) arranged above the fixed ring plate (201), and the wheel frame (707) is provided with a roller 1 (708) matching the wheel rail 1 (202) and a roller 2 (709) matching the wheel rail 2 (203); The circumferential side wall of the cone drum (703) is provided with a plurality of cleaning columns (7031) corresponding to the inner cavity of the filter holes of the filter screen (6), and the cleaning columns (7031) are used to squeeze out impurities in the inner cavity of the filter holes of the filter screen (6); The surface cleaning component (8) comprises a connecting block (801) fixedly connected to the circumferential side wall of the rotating rod (601); the side wall of the connecting block (801) is connected to a shovel plate (802) and a connecting plate (803); a sewage inlet channel (804) is formed between the shovel plate (802) and the connecting plate (803); the shovel plate (802) is a flat wedge-shaped structure; The ends of the shovel plate (802) and the connecting plate (803) are connected with a dirt baffle plate (805); the side wall of the dirt baffle plate (805) is provided with two limit blocks (806); the side wall of the connecting block (801) is provided with two limit blocks (806) symmetrical to the side wall of the dirt baffle plate (805); a dirt storage box (807) is provided between the connecting block (801) and the dirt baffle plate (805); a plurality of grooves (808) matching the shape of the limit blocks (806) are provided at the bottom of the dirt storage box (807); the dirt storage box (807) is plug-fitted with the limit blocks (806) through the grooves (808); The inner cavity of the sewage inlet channel (804) is in communication with the inner cavity of the sewage storage box (807); The side wall of the dirt storage box (807) is provided with mesh holes (8071) for draining water inside the dirt storage box (807).

2. The environmental detection water sample filtering device according to claim 1, characterized in that: The circumferential inner wall of the top cover (1) is threadedly connected to the upper end of the circumferential outer wall of the filter cartridge (2), and the bottom of the filter cartridge (2) is detachably connected to the top surface of the insert cartridge (3) via bolts.

3. The environmental detection water sample filtering device according to claim 2, characterized in that: The transmission assembly (5) comprises a motor (501) arranged on the top surface of the top cover (1); the output end of the motor (501) is connected to a rotating shaft (502); and a clamping block (503) is arranged on the circumferential side wall of the rotating shaft (502); The top surface of the rotating rod (601) is provided with a slot (602) that matches the rotating shaft (502), and the circumferential side wall of the rotating rod (601) is provided with a clamping groove (603) that matches the clamping block (503). The rotating shaft (502) is plug-fitted with the rotating rod (601) through the slot (602).

4. The environmental detection water sample filtering device according to claim 3, characterized in that: The filter screen (6) is a disc structure made of stainless steel, and is provided with a plurality of filter holes of a circular structure arranged in a circular path array from top to bottom.

5. The environmental detection water sample filtering device according to claim 4, characterized in that: The pressing assembly (9) comprises a fixing column (901) fixedly connected to the circumferential side wall of the rotating rod (601), and the end of the fixing column (901) is movably connected to a rotating wheel (902); The circumferential inner wall of the filter cartridge (2) is provided with a first convex strip (205) and a second convex strip (206), and the first convex strip (205) and the second convex strip (206) are connected to the circumferential inner wall of the filter cartridge (2) via a plurality of curved blocks (207); The rotating wheel (902) is arranged between the first convex strip (205) and the second convex strip (206), and the rotating wheel (902) forms a sliding fit with the bottom surface of the first convex strip (205) and the top surface of the second convex strip (206).

6. The environmental detection water sample filtering device according to claim 5, characterized in that: Two thin columns (903) are arranged on the fixed column (901), and the two thin columns (903) are provided with the same structure; The outer circumferential wall of one of the thin columns (903) is slidably connected to a slide cylinder 1 (904) and a slide cylinder 2 (905); the bottom of the slide cylinder 1 (904) is rotatably connected to a support rod (906); the bottom of the support rod (906) is rotatably connected to a pressure plate (907); the side wall of the slide cylinder 1 (904) is connected to a spring (908); the spring (908) is sleeved on the circumferential side wall of the thin column (903); the other end of the spring (908) is connected to the side wall of the fixed column (901); The second slide cylinder (905) is provided with a structure symmetrical to the first slide cylinder (904); The bottom surface of the pressing plate (907) is arranged as a curved surface structure matching the shape of the top surface of the connecting plate (803); an inserting plate (909) is arranged on the bottom surface of the pressing plate (907); a slot (809) is provided on the top surface of the connecting plate (803); the inserting plate (909) and the slot (809) form a plug-in fit.

7. The method for using the environmental testing water sample filtering device according to claim 6, characterized in that: The following steps are involved: S1, filtering operation, pouring the environmental test water sample into the filter cartridge (2) from the water sample injection port (101) on the top cover (1), filtering impurities in the environmental test water sample through the filter screen (6), and allowing the pure water sample to flow from the insert tube (3) below the filter screen (6) into the water sample cartridge (4); S2, a cleaning and rotating operation, in which, during the filtering operation of the environmental detection water sample, the motor (501) is turned on, so that the rotating shaft (502) at the output end of the motor (501) drives the rotating rod (601) to rotate, and the rotating rod (601) rotates to drive the filter hole cleaning component (7) and the surface cleaning component (8) to rotate around the rotating rod (601); S3, filter hole cleaning operation, when the filter hole cleaning assembly (7) rotates around the rotating rod (601), the fixed frame (701) and the fixed rod (702) rotate around the rotating rod (601), and the roller 1 (708) and the roller 2 (709) slide on the wheel rail 1 (202) and the wheel rail 2 (203) respectively, so that the curved rod (705) and the fixed frame (701) rotate synchronously around the rotating rod (601). The conical roller (703) and the gear (704) are driven to rotate synchronously around the rotating rod (601) by the fixed rod (702) and the curved rod (705); the gear (704) is meshed with the tooth groove (204) during the rotation around the rotating rod (601), so that the gear (704) rotates around the rotating rod (601) and at the same time rotates around the rotating rod (601), driving the conical roller (703) to rotate, so that the conical roller (703) can roll against the bottom surface of the filter screen (6), so that the cleaning columns (7031) on the conical roller (703) are inserted into the inner cavity of the filter holes of the filter screen (6) one by one, and impurities in the inner cavity of the filter holes are squeezed out and enter the upper surface of the filter screen (6); S4, surface cleaning operation. When the surface cleaning component (8) rotates around the rotating rod (601), the shovel plate (802) can slide on the upper surface of the filter screen (6), and cooperate with the cleaning column (7031) to squeeze the impurities in the inner cavity of the filter hole into the upper surface of the filter screen (6). The impurities will gradually accumulate on the inclined surface of the shovel plate (802) and be surrounded by the dirt baffle plate (805). When the shovel plate (802) rotates around the rotating rod (601), the accumulated impurities can be brought into the dirt inlet channel (804) and enter the dirt storage box (807) through the dirt inlet channel (804), so that the impurities on the upper surface of the filter screen (6) can be cleaned and centrally managed, so as to keep the upper surface of the filter screen (6) always clean; S5, after the filtration is completed, the impurities in the filter holes of the filter screen (6) are cleaned from the bottom to the upper surface of the filter screen (6) by using the filter hole cleaning component (7), and the impurities on the upper surface of the filter screen (6) are cleaned and centrally managed by using the surface cleaning component (8), so that the environmental detection water sample can successfully complete the filtration operation. After completion, it is only necessary to pull the dirt storage box (807) out of the limit block (806) and clean the impurities in the dirt storage box (807).

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