Water sample detection pretreatment device

Abstract

The utility model relates to the technical field of water sample detection, and solves the problems that the particle sizes of impurities are different, some fine impurities are remained during filtration, the data of water quality monitoring is still influenced, the impurities after filtration are inconvenient to clean and maintain, and the accumulation of excessive impurities also influences the filtration effect. The water sample detection pretreatment device comprises a tank body, a driving motor is arranged at the top of the tank body, the output end of the driving motor penetrates through the top of the tank body to be fixedly connected with a fixing rod, a plurality of crossed arc-shaped curved blades are arranged on the surface of the fixing rod from top to bottom at equal intervals, and the bottom of the tank body is connected with a multi-stage filtering assembly in a penetrating mode; the multi-stage filter assembly comprises a filter cartridge connected with the bottom of the tank body in a penetrating manner, a groove A, a groove B and a groove C are sequentially formed in the surface of the filter cartridge from top to bottom, a special-shaped plate is inserted into the groove A, the groove B and the groove C, a groove is formed in the surface of the special-shaped plate, and a filter screen is arranged in the groove.

Description

Technical Field

[0001] This utility model relates to the field of water sample testing technology, specifically a water sample testing pretreatment device. Background Technology

[0002] A water sample testing pretreatment device disclosed in CN219870582U includes a housing and a filtration unit. A water inlet pipe is provided at the water inlet at the upper end of the outer arc surface of the housing, and a drain pipe is provided at the drain outlet at the lower end of the outer arc surface of the housing. A rotating ring is rotatably connected to the upper end of the inner arc wall of the housing via a bearing. A housing cover is threadedly connected to the open end of the bottom of the housing. The filtration unit includes a linkage rod and a filter cylinder. The linkage rod is located at the center of the upper surface of the housing cover, and the upper end of the linkage rod is rotatably connected to the filter cylinder via a bearing.

[0003] It generates centrifugal force and impact through a single-machine drive to assist in the water sample filtration process. This can improve filtration efficiency while preventing solid impurities from clogging the filter holes on the filter cartridge, thereby ensuring the normal operation of the filtration process and the accuracy of the final water body test results.

[0004] However, impurities vary in particle size, and some small impurities may remain after filtration, still affecting water quality monitoring data. Furthermore, cleaning and maintaining the filtered impurities is inconvenient, and excessive accumulation of impurities can also affect the filtration effect. Therefore, this solution is not very efficient at filtering impurities in water sample pretreatment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a water sample testing pretreatment device that solves the problems of varying particle sizes of impurities, the presence of small impurities during filtration that still affect water quality monitoring data, the inconvenience of cleaning and maintaining filtered impurities, and the impact of excessive impurity accumulation on filtration efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water sample testing pretreatment device, comprising a tank, a drive motor installed at the top of the tank, a fixed rod fixedly connected to the output end of the drive motor through the top of the tank, a plurality of intersecting arc-shaped curved blades evenly spaced from top to bottom on the surface of the fixed rod, and a multi-stage filtration assembly connected through the bottom of the tank; the multi-stage filtration assembly includes a filter cylinder connected through the bottom of the tank, wherein grooves A, B, and C are sequentially formed on the surface of the filter cylinder from top to bottom, irregularly shaped plates are inserted into the grooves A, B, and C, grooves are formed on the surface of the irregularly shaped plates, filter screens are installed inside the grooves, and threaded bolts connected to the filter cylinder are provided on both sides of the irregularly shaped plates.

[0007] In a specific embodiment, the A groove, B groove and C groove are equidistantly distributed along the axial direction of the filter cylinder and have the same opening direction. The insertion direction of the irregular plate is perpendicular to the axis of the filter cylinder, and the filter mesh aperture in the A groove, B groove and C groove decreases sequentially.

[0008] In one specific embodiment, a water inlet pipe is connected through one side of the top of the tank, the outlet of the water inlet pipe extends to the middle of the inner cavity of the tank and is parallel to the axis of the fixing rod, and a support leg is provided at the bottom edge of the tank.

[0009] In one specific embodiment, the aperture of the filter screen gradually decreases from groove A to groove C, and the edge of the filter screen is bonded and fixed to the inner wall of the groove of the irregular plate by epoxy resin sealant.

[0010] In a specific embodiment, the threaded bolts are symmetrically distributed on both sides of the irregular plate and extend to the outer wall of the filter cylinder at their ends, and the surface of the threaded bolts is coated with a polytetrafluoroethylene anti-rust coating.

[0011] In one specific embodiment, the intersection angle between adjacent blades of the cross-arc curved blade is from ° to °, and the cutting edge surface of the cross-arc curved blade is coated with a tungsten carbide wear-resistant layer.

[0012] Compared with the prior art, the present invention provides a water sample pretreatment device, which has the following beneficial effects:

[0013] The technical solution disclosed in this utility model achieves dynamic crushing of particulate impurities in water samples through the linkage design of cross-arc curved blades and drive motor. The drive motor drives the fixed rod to rotate at high speed, and the cross-arc curved blades break large particles of impurities into uniform fine particles through shearing and impact. This solves the problem of residue caused by the size difference of impurities in traditional filtration, improves the efficiency of subsequent filtration and the accuracy of test data. Through the design of A-channel, B-channel, and C-channel of multi-stage filtration components and filter screens with decreasing pore size, the impurities are intercepted in stages. The water sample passes through the filter screens with large pore size to small pore size layer by layer, intercepting impurities of different particle sizes (such as A-channel intercepting debris, B-channel intercepting sand and gravel, and C-channel intercepting dust). This solves the problem of fine impurities interfering with detection and ensures that the water sample meets the test standards after pretreatment.

[0014] The shaped plate insertion and threaded bolt fixing structure of this utility model enables quick disassembly and maintenance of the filter screen. Simply loosen the threaded bolt to pull out the shaped plate to clean impurities. This solves the problem of cumbersome maintenance after filter screen blockage in traditional devices, and improves the long-term reliability and maintenance efficiency of the equipment. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the tank structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the multi-stage filtration assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-arc curved blade structure of this utility model.

[0020] In the diagram: 1. Tank body; 2. Drive motor; 3. Fixing rod; 4. Crossed curved blades; 5. Multi-stage filter assembly; 51. Filter cartridge; 52. A-slot; 53. B-slot; 54. C-slot; 55. Irregularly shaped plate; 56. Groove; 57. Filter screen; 58. Threaded bolt; 6. Inlet pipe; 7. Support leg. Detailed Implementation

[0021] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Figures 1-4 As an embodiment of this utility model, a water sample testing pretreatment device includes a tank 1, a drive motor 2 is installed at the top of the tank 1, the output end of the drive motor 2 passes through the top of the tank 1 and is fixedly connected to a fixing rod 3, a plurality of cross arc-shaped curved blades 4 are arranged at equal intervals from top to bottom on the surface of the fixing rod 3, and a multi-stage filter assembly 5 is connected through the bottom of the tank 1.

[0023] The specific problem addressed in this embodiment is the issue of impurities of varying particle sizes. During filtration, some small impurities remain, still affecting water quality monitoring data. Furthermore, cleaning and maintaining filtered impurities is inconvenient, and excessive accumulation of impurities can also affect filtration efficiency. This invention achieves dynamic pulverization of water sample particles through a linkage design between the cross-shaped curved blades 4 and the drive motor 2. The drive motor 2 drives the fixed rod 3 to rotate at high speed, and the cross-shaped curved blades 4 break large impurities into uniform, fine particles through shearing and impact. This solves the problem of residue caused by impurity size differences in traditional filtration, improving subsequent filtration efficiency and the accuracy of test data. Through the design of the multi-stage filtration assembly 5 with its A-channel 52, B-channel 53, C-channel 54 and filter screens 57 with decreasing pore sizes, it achieves graded interception of impurities. The water sample passes through the filter screens 57 layer by layer, from large pore size to small pore size, intercepting impurities of different particle sizes. For example, channel A intercepts debris, channel B intercepts gravel, and channel C intercepts dust, solving the problem of small impurities interfering with detection and ensuring that the pre-treated water sample meets testing standards.

[0024] The multi-stage filtration assembly 5 includes a filter cylinder 51 that runs through the bottom of the tank 1. The surface of the filter cylinder 51 has grooves A 52, B 53, and C 54 sequentially formed from top to bottom. Irregularly shaped plates 55 are inserted into the grooves A 52, B 53, and C 54. Grooves 56 are formed on the surface of the irregularly shaped plates 55, and filter screens 57 are installed inside the grooves 56. Threaded bolts 58, threadedly connected to the filter cylinder 51, are provided on both sides of the irregularly shaped plates 55. In this specific embodiment, after the drive motor 2 starts, it drives the fixed rod 3 to rotate the cross-shaped curved blades 4 at high speed. After the water sample is injected into the tank 1 through the inlet pipe 6, the blades break up particulate impurities through shearing and centrifugal force. The pulverized water sample flows into the filter cylinder 51 and sequentially passes through the filter screens 57 of different pore sizes in the grooves A 52, B 53, and C 54, intercepting impurities step by step. After being intercepted by the irregularly shaped plates 55, the impurities can be removed and cleaned by loosening the threaded bolts 58. Dynamic pulverization combined with multi-stage filtration achieves full-size particle interception of impurities, solving the residue problem of traditional single-stage filtration and improving the accuracy of water sample detection.

[0025] In this specific embodiment, grooves A 52, B 53 and C 54 are equidistantly distributed along the axial direction of the filter cylinder 51 and have the same opening direction. The insertion direction of the irregular plate 55 is perpendicular to the axis of the filter cylinder 51. The aperture of the filter screen 57 in grooves A 52, B 53 and C 54 decreases sequentially.

[0026] Tanks A 52, B 53, and C 54 are equidistantly distributed along the axial direction of filter cylinder 51. The irregularly shaped plate 55 is inserted laterally into the tank. The filter screen 57 in tank A has a pore size of 200 mesh to intercept debris, the filter screen 57 in tank B has a pore size of 400 mesh to intercept sand and gravel, and the filter screen 57 in tank C has a pore size of 600 mesh to intercept micro-dust. The water sample is filtered step by step from bottom to top. The three-stage gradient filtration accurately separates impurities of different particle sizes, avoids interference from fine particles with the test data, and reduces the risk of filter clogging.

[0027] In this specific embodiment, a water inlet pipe 6 is connected through one side of the top of the tank body 1. The outlet end of the water inlet pipe 6 extends to the middle of the inner cavity of the tank body 1 and is parallel to the axis of the fixing rod 3. A support leg 7 is provided at the bottom edge of the tank body 1.

[0028] The water inlet pipe 6 extends to the middle of the tank body 1 and is parallel to the axis of the fixed rod 3. Water is injected along the rotation direction of the blade to enhance the turbulent mixing effect. The bottom of the support leg 7 is equipped with a rubber anti-slip pad to stabilize the tank body 1 and prevent vibration and displacement. The directional water injection, together with the blade rotation, optimizes the uniformity of crushing. The shock absorption design of the support leg 7 ensures the stability of the equipment operation.

[0029] In this specific embodiment, the aperture of the filter screen 57 gradually decreases from groove A 52 to groove C 54, and the edge of the filter screen 57 is bonded and fixed to the inner wall of the groove 56 of the irregular plate 55 by epoxy resin sealant.

[0030] The edge of the filter screen 57 is bonded to the groove 56 of the irregular plate 55 with epoxy resin sealant. The pore size of the filter screen 57 decreases from 200 mesh to 600 mesh from groove A to groove C. When the water sample passes through in sequence, large particles are intercepted by the upper layer and small particles are retained by the bottom layer. The sealing and bonding prevents water sample bypass leakage. The gradient pore size design extends the service life of the filter screen 57 and reduces the maintenance frequency.

[0031] In this specific embodiment, the threaded bolts 58 are symmetrically distributed on both sides of the irregular plate 55 and extend to the outer wall of the filter cylinder 51. The surface of the threaded bolts 58 is coated with a polytetrafluoroethylene anti-rust coating.

[0032] The ends of the threaded bolts 58 on both sides of the irregular plate 55 extend to the outer wall of the filter cartridge 51. The irregular plate 55 can be removed by unscrewing the exposed part. The polytetrafluoroethylene coating on the surface of the threaded bolts 58 isolates water and oxygen, prevents the threads from rusting and getting stuck, and the anti-rust coating ensures that the threaded bolts 58 can be easily disassembled for a long time, simplifying the filter cleaning process and improving maintenance efficiency.

[0033] In this specific embodiment, the intersection angle between adjacent blades of the cross arc-shaped curved blade 4 is 30° to 60°, and the cutting edge surface of the cross arc-shaped curved blade 4 is coated with a tungsten carbide wear-resistant layer.

[0034] The four adjacent cross-shaped curved blades are welded and fixed at a 45° intersection angle. The tungsten carbide coating on the cutting edge enhances hardness. When rotating at high speed, the blades interlaced to shear impurities. The tungsten carbide layer resists particle wear, the intersection angle optimizes the shearing force distribution, and the wear-resistant coating maintains the sharpness of the blades, ensuring long-term and efficient crushing of impurities.

[0035] Working principle: The drive motor 2 drives the fixed rod 3 to drive the cross-arc curved blades 4 to rotate at high speed to crush water sample particles. After crushing, the water sample flows into the filter cylinder 51 and passes through the filter screens 57 with decreasing inner diameters in the A groove 52, B groove 53, and C groove 54 to intercept impurities step by step. The irregular plate 55 can be disassembled and the filter residue can be cleaned through the threaded bolts 58. The water inlet pipe 6 injects water in a directional manner to cooperate with the blades to mix in a turbulent flow. The support leg 7 stabilizes the tank body 1, and finally realizes an integrated pretreatment process of dynamic crushing of water sample, multi-stage filtration and convenient maintenance.

[0036] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0037] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water sample detection pretreatment device, comprising a tank body (1), characterized in that: The top of the tank (1) is provided with a drive motor (2), the output end of the drive motor (2) passes through the top of the tank (1) and is fixedly connected to a fixing rod (3). Several cross arc-shaped curved blades (4) are arranged at equal intervals from top to bottom on the surface of the fixing rod (3). The bottom of the tank (1) is connected to a multi-stage filter assembly (5). The multi-stage filtration assembly (5) includes a filter cylinder (51) that runs through the bottom of the tank (1). The surface of the filter cylinder (51) is provided with grooves A (52), B (53), and C (54) from top to bottom. A shaped plate (55) is inserted into the grooves A (52), B (53), and C (54). A groove (56) is provided on the surface of the shaped plate (55). A filter screen (57) is provided inside the groove (56). Threaded bolts (58) that are threadedly connected to the filter cylinder (51) are provided on both sides of the shaped plate (55).

2. The water sample detection pretreatment device according to claim 1, characterized in that: The A groove (52), B groove (53) and C groove (54) are equidistantly distributed along the axial direction of the filter cylinder (51) and have the same opening direction. The insertion direction of the irregular plate (55) is perpendicular to the axis of the filter cylinder (51). The aperture of the filter screen (57) in the A groove (52), B groove (53) and C groove (54) decreases sequentially.

3. The water sample detection pretreatment device according to claim 1, characterized in that: The top side of the tank (1) is connected to a water inlet pipe (6), the outlet end of the water inlet pipe (6) extends to the middle of the inner cavity of the tank (1) and is parallel to the axis of the fixing rod (3), and the bottom edge of the tank (1) is provided with a support leg (7).

4. The water sample detection pretreatment device according to claim 1, characterized in that: The aperture of the filter screen (57) decreases gradually from groove A (52) to groove C (54). The edge of the filter screen (57) is bonded and fixed to the inner wall of the groove (56) of the irregular plate (55) by epoxy resin sealant.

5. The water sample detection pretreatment device according to claim 1, characterized in that: The threaded bolts (58) are symmetrically distributed on both sides of the irregular plate (55) and extend to the outer wall of the filter cylinder (51). The surface of the threaded bolts (58) is coated with a polytetrafluoroethylene anti-rust coating.

6. The water sample detection pretreatment device according to claim 1, characterized in that: The cross angle between adjacent blades of the cross-arc curved blade (4) is 30° to 60°, and the cutting edge surface of the cross-arc curved blade (4) is coated with a tungsten carbide wear-resistant layer.

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