Solid impurity filtering device for water quality detection

Abstract

The utility model provides a solid impurity filtering device for water quality detection, which comprises a base, a filter cartridge and a cover body rotationally connected with the filter cartridge are arranged on the base, the filter cartridge is provided with a filter cavity, a water filter port communicated with the filter cavity is arranged on the filter cartridge, and a filter screen is arranged in the filter cavity and positioned between the cover body and the water filter port. The cover body is provided with a water storage cavity communicated with the filtering cavity and provided with a water inlet pipe communicated with the water storage cavity, a movable push plate is arranged in the water storage cavity and located on the side, away from the filtering net, of the joint of the water inlet pipe and the water storage cavity, the cover body is provided with a driving assembly in transmission connection with the push plate, and the driving assembly drives the push plate to be close to or away from the filtering net. According to the utility model, the technical problem of low filtering efficiency of the existing filtering device is solved, and the technical effects of quickening the sample filtering and improving the water quality detection efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality detection, in particular to a solid impurity filtering device for water quality detection. Background Art

[0002] Water quality testing is the process of determining the types of pollutants in water, the concentrations of various pollutants, and their changing trends, so as to evaluate the water quality. In the process of testing water bodies, the samples collected will contain more or less solid impurities such as mud and sand. Therefore, the solid impurities in the samples need to be filtered out before testing to prevent the solid impurities from affecting the test results.

[0003] The Chinese utility model patent with the announcement number CN214861628U discloses a solid debris filtering device for water quality detection, including a filter cartridge and a filter frame, the filter cartridge is an overall cylindrical structure, an open filter cavity is arranged inside the filter cartridge, and the filter frame is arranged in the filter cavity; the filter frame and the filter cavity wall are mutually attached, and a ring-shaped filter screen is arranged on the filter frame; a first guide surface and a second guide surface are arranged in the filter cavity, the first guide surface and the second guide surface are both funnel-shaped inclined arc surfaces, and the first guide surface is arranged on the upper side of the second guide surface; a drainage groove is arranged at the bottom of the second guide surface, and the drainage groove is connected to the drainage port on the side of the filter cartridge; an annular retaining cylinder is arranged at the bottom of the first guide surface, the retaining cylinder is arranged vertically, and its bottom is aligned with the bottom of the first guide surface, and a through hole is arranged on the side of the retaining cylinder. The filtering structure provided by the solid debris filtering device for water quality detection can realize secondary filtration of water, can effectively filter out solid impurities in water, ensure the filtering effect, and thus ensure the accuracy of the final result.

[0004] When the solid debris filtering device for water quality testing disclosed in the above utility model patent is used, the sample to be filtered is directly introduced into the filter cavity. The sample can be filtered by passing through the through holes on the filter screen and the retaining cylinder under the action of gravity. Since the flow speed of the sample is limited and the impurities in the sample will also clog the filter screen or the through holes and affect the sample passing through the filter screen or the retaining cylinder, the existing filtering device has a low filtering efficiency. Utility Model Content

[0005] In view of the deficiencies existing in the prior art, the utility model provides a solid impurity filtering device for water quality detection, which solves the problem of low filtering efficiency of the filtering device existing in the prior art.

[0006] According to an embodiment of the utility model, a solid impurity filtering device for water quality detection includes a base, a filter cartridge and a cover body rotatably connected to the filter cartridge are provided on the base, the filter cartridge has a filter chamber, the filter cartridge is provided with a water filter port connected to the filter chamber, a filter screen is provided in the filter chamber and the filter screen is located between the cover body and the water filter port, the cover body has a water storage chamber connected to the filter chamber and a water inlet pipe connected to the water storage chamber is provided on the cover body, a movable push plate is provided in the water storage chamber, the push plate is located on a side of the connection between the water inlet pipe and the water storage chamber away from the filter screen, a drive assembly is provided on the cover body for transmission connection with the push plate, and the drive assembly drives the push plate to approach or move away from the filter screen.

[0007] Furthermore, a plurality of filter screens are stacked and arranged in the filter cartridge along the moving direction of the push plate, and the sizes of the meshes on the plurality of filter screens gradually decrease in the direction approaching the water filter outlet.

[0008] Furthermore, the filter screen includes a frame body, and two opposite sides of the frame body are respectively provided with a protrusion and a groove, and the protrusion on one of the two adjacent filter screens extends into the groove on the other filter screen.

[0009] Furthermore, a receiving groove is provided on the inner peripheral wall of the filter cartridge, the receiving groove is communicated with the water storage cavity and the frame body is in contact with the inner wall of the receiving groove.

[0010] Furthermore, the driving assembly includes a cylinder and a push rod arranged at the output end of the cylinder, and one end of the push rod away from the cylinder extends into the water storage cavity and is fixedly connected to the push plate.

[0011] Furthermore, a protruding first mounting portion is provided on the outer peripheral wall of the filter cartridge and a mounting shaft is provided on the first mounting portion, an extending portion is provided on the outer peripheral wall of the cover body and a mounting hole matching the mounting shaft is provided on the extending portion.

[0012] Furthermore, a protruding second mounting portion is provided on the outer peripheral wall of the filter cartridge and a rotatable locking screw is provided on the second mounting portion, a locking plate is provided on the outer peripheral wall of the cover body and is fitted with the second mounting portion, a groove is provided on the locking plate to accommodate part of the locking screw, a locking knob is provided on the locking screw and the locking knob abuts against a side of the locking plate away from the second mounting portion and presses the locking plate onto the second mounting portion.

[0013] Furthermore, a connecting shaft is provided on the second mounting portion, one end of the locking screw has a connecting portion, and the connecting portion is provided with a through hole matched with the connecting shaft.

[0014] Furthermore, a sealing ring is provided on a side of the filter cartridge close to the cover body, the sealing ring is arranged around the opening of the filter cavity and the cover body presses the sealing ring onto the filter cartridge.

[0015] Furthermore, a liquid injection hopper is also provided on the cover body, and the liquid injection hopper is located at one end of the water inlet pipe away from the cover body and is connected to the water inlet pipe.

[0016] Compared with the prior art, the utility model has the following beneficial effects: by adopting the filter screen arranged in the filter cartridge to filter the collected water sample, the sample to be filtered is poured into the water storage cavity of the cover body from the water inlet pipe, and then enters the filter cavity and passes through the filter screen, so that solid impurities such as mud and sand in the sample can be separated, and in the process of the sample passing through the filter screen, the driving component drives the push plate to move in the direction close to the filter screen to increase the pressure in the water storage cavity and make it greater than the air pressure in the external environment, so that the sample in the water storage cavity can quickly pass through the filter screen and be discharged from the water filter port, and reduce the adverse effect of solid impurities clogging the filter screen on the filtration efficiency, and when the filter screen in the filter cartridge needs to be cleaned, the cover body is rotated to open the filter cartridge and the filter screen can be taken out of the filter cartridge, so as to clean the solid impurities separated from the sample out of the filter cartridge, which solves the technical problem of low filtration efficiency of the existing filtration device, produces the technical effect of accelerating sample filtration and improving water quality detection efficiency, and is simple to operate and convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a solid impurity filtering device for water quality detection according to an embodiment of the utility model;

[0018] Figure 2 A cross-sectional view of a solid impurity filtering device for water quality detection according to an embodiment of the utility model;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 The utility model is a cross-sectional view of a filter screen in a solid impurity filtering device for water quality detection according to an embodiment of the present invention.

[0021] In the above drawings: 100, base; 200, filter cartridge; 201, filter chamber; 202, water filter port; 203, accommodating groove; 204, first mounting part; 205, mounting shaft; 206, second mounting part; 207, locking screw; 208, locking knob; 209, connecting shaft; 210, connecting part; 300, cover; 301, water storage chamber; 302, water inlet pipe; 303, extension part; 304, locking plate; 305, slot; 306, liquid injection bucket; 400, filter screen; 401, frame; 402, bump; 403, groove; 500, push plate; 600, drive assembly; 601, cylinder; 602, push rod; 700, sealing ring. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figures 1 to 4 As shown, an embodiment of the utility model proposes a solid impurity filtering device for water quality testing, which is used to filter collected water samples to remove solid impurities such as mud and sand in the samples to avoid the solid impurities in the samples from having an adverse effect on the test results.

[0024] Please refer to Figure 1 and Figure 2 The solid impurity filtering device for water quality detection includes a base 100, on which a filter cartridge 200 and a cover body 300 rotatably connected to the filter cartridge 200 are arranged, the filter cartridge 200 has a filter cavity 201, and the filter cartridge 200 is provided with a water filter port 202 connected to the filter cavity 201, a filter screen 400 is arranged in the filter cavity 201, and the filter screen 400 is located between the cover body 300 and the water filter port 202, the cover body 300 has a water storage cavity 301 connected to the filter cavity 201, and the cover body 300 is provided with a water storage cavity 301 connected to the water storage cavity 301 The water inlet pipe 302 can be rotated to close the filter chamber 201 through the cover body 300 and pour the sample into the water storage chamber 301 and the filter chamber 201 through the water inlet pipe 302; a movable push plate 500 is provided in the water storage chamber 301, and the push plate 500 is located at the side of the connection between the water inlet pipe 302 and the water storage chamber 301 away from the filter screen 400, and a driving component 600 is provided on the cover body 300 and is transmission-connected to the push plate 500, and the driving component 600 is used to drive the push plate 500 to approach or move away from the filter screen 400.

[0025] Specifically, the operation steps of filtering a sample using the solid impurity filtering device for water quality detection provided in this embodiment are as follows: first, the filter screen 400 is placed in the filter cartridge 200 and the cover body 300 is rotated to seal the opening of the filter cartridge 200, and the sample to be filtered is poured into the water storage chamber 301 from the water inlet pipe 302. When the sample flows from the water storage chamber 301 into the filter chamber 201 and passes through the filter screen 400, solid impurities such as silt and sand are retained on the filter screen 400, and the solid impurities in the sample can be separated. During the sample filtering process, the driving assembly 600 drives the push plate 500 to move toward the filter screen 400. As the push plate 500 moves, the pressure in the water storage chamber 301 increases and is greater than the air pressure in the external environment, so that the sample in the water storage chamber 301 quickly passes through the filter screen 400 and is discharged from the water filter port 202, and the adverse effect of solid impurities blocking the mesh of the filter screen 400 on the filtering efficiency is reduced. At this time, the filtered sample can be received at the water filter port 202. When it is necessary to clean the filter screen 400 in the solid impurity filtering device for water quality detection, the cover body 300 is rotated to open the filter cartridge 200, and the filter screen 400 can be taken out of the filter cartridge 200 to clean the solid impurities separated from the sample out of the filter cartridge 200. The solid impurity filtering device for water quality detection provided in this embodiment can speed up sample filtering and improve water quality detection efficiency, and is simple to operate and convenient to clean and maintain.

[0026] Please combine Figure 2 and Figure 3 Three filter screens 400 are stacked in the filter cartridge 200 along the moving direction of the push plate 500, and the sizes of the meshes on the three filter screens 400 gradually decrease in the direction close to the water filter port 202. By stacking three filter screens 400 in the filter cartridge 200 and setting the sizes of the meshes on the three filter screens 400 to gradually decrease in the direction close to the water filter port 202, solid impurities of different particle sizes are sequentially retained on the corresponding filter screens 400, so as to improve the filtering effect of the solid impurity filtering device for water quality detection, and ensure that the solid impurities in the sample are fully removed.

[0027] In this embodiment, the filter screen 400 includes a frame body 401, and the frame body 401 is provided with a protrusion 402 and a groove 403 on opposite sides, respectively. The protrusion 402 on one of the two adjacent filter screens 400 extends into the groove 403 on the other filter screen 400. The three stacked filter screens 400 are positioned by the cooperation of the protrusion 402 and the groove 403, so that the relative positions of the three filter screens 400 remain stable, ensuring that the sample poured into the water storage chamber 301 passes through the three filter screens 400 with different mesh sizes in sequence, thereby effectively filtering the sample.

[0028] like Figure 2 As shown, a receiving groove 203 is provided on the inner peripheral wall of the filter cartridge 200, and the receiving groove 203 is communicated with the water storage chamber 301, and the frame 401 is fitted with the inner wall of the receiving groove 203. The receiving groove 203 for accommodating the filter screen 400 is provided on the inner peripheral wall of the filter cartridge 200. After three filter screens 400 are sequentially placed in the receiving groove 203, the frames 401 of the three filter screens 400 are respectively fitted with the receiving groove 203 to prevent the filter screen 400 from unexpectedly moving during the filtering process, causing the sample in the water storage chamber 301 to be directly discharged from the water filter port 202 without being filtered, which is beneficial to improving the reliability of the solid impurity filtering device for water quality detection.

[0029] Please refer to Figure 2 The driving assembly 600 includes a cylinder 601 and a push rod 602 arranged at the output end of the cylinder 601. One end of the push rod 602 away from the cylinder 601 extends into the water storage chamber 301 and is fixedly connected to the push plate 500. The cylinder 601 drives the push rod 602 to extend or retract into the cylinder 601, which can drive the push plate 500 to move in the water storage chamber 301, and when the push rod 602 extends out of the cylinder 601, it drives the push plate 500 close to the filter 400. At this time, the liquid in the water storage chamber 301 quickly passes through the filter 400 under the action of the push plate 500. When the push rod 602 retracts into the cylinder 601, the push plate 500 moves away from the filter 400 under the drive of the push rod 602. When the push plate 500 moves to above the connection between the water inlet pipe 302 and the water storage chamber 301, the sample to be filtered can continue to be poured into the water inlet pipe 302, thereby continuously filtering the sample.

[0030] In detail, a protruding first mounting portion 204 is provided on the outer peripheral wall of the filter cartridge 200, and a mounting shaft 205 is provided on the first mounting portion 204. An extension portion 303 is provided on the outer peripheral wall of the cover body 300, and a mounting hole matching the mounting shaft 205 is provided on the extension portion 303. The filter cartridge 200 and the cover body 300 are rotatably connected through the cooperation between the first mounting portion 204 and the extension portion 303, and the first mounting portion 204 is provided with a mounting shaft 205, and the extension portion 303 is provided with a mounting hole matching the mounting shaft 205, so that the connection between the filter cartridge 200 and the cover body 300 is reliable, ensuring the overall structural stability of the solid impurity filtering device for water quality detection.

[0031] like Figure 2 and Figure 3 As shown, a protruding second mounting portion 206 is provided on the outer peripheral wall of the filter cartridge 200 and a rotatable locking screw 207 is provided on the second mounting portion 206, a locking plate 304 is provided on the outer peripheral wall of the cover body 300 and is fitted with the second mounting portion 206, a slot 305 is provided on the locking plate 304 for accommodating part of the locking screw 207, a locking knob 208 is provided on the locking screw 207 and the locking knob 208 abuts against a side of the locking plate 304 away from the second mounting portion 206 and presses the locking plate 304 onto the second mounting portion 206. After the cover body 300 is rotated to the position that closes the filter chamber 201, the locking plate 304 is fitted with the second mounting portion 206. At this time, the locking screw 207 is rotated to make the locking screw 207 enter the slot 305 and the locking knob 208 is rotated until the locking knob 208 abuts against the locking plate 304 to lock the position of the cover body 300, so that the cover body 300 remains in the position that closes the filter chamber 201, preventing the cover body 300 from making unexpected movements during the filtration process and affecting the normal filtration. When the filter screen 400 needs to be cleaned, the locking knob 208 is rotated to make the locking knob 208 away from the locking plate 304 and the locking screw 207 is rotated to make the locking screw 207 withdraw from the slot 305 to release the lock of the cover body 300. At this time, the cover body 300 can be rotated relative to the filter cartridge 200 to open the filter chamber 201, and the operation is simple and convenient.

[0032] Specifically, the second mounting portion 206 is provided with a connecting shaft 209, one end of the locking screw 207 has a connecting portion 210, and the connecting portion 210 is provided with a through hole matched with the connecting shaft 209. The locking screw 207 and the filter cartridge 200 are rotatably connected through the cooperation between the connecting portion 210 and the second mounting portion 206. The second mounting portion 206 is provided with a connecting shaft 209, and the connecting portion 210 is provided with the through hole matched with the connecting shaft 209, so that the locking screw 207 can smoothly rotate on the filter cartridge 200, so as to lock or unlock the relative position of the cover body 300 and the filter cartridge 200.

[0033] like Figure 3 As shown, a sealing ring 700 is provided on one side of the filter cartridge 200 close to the cover body 300. The sealing ring 700 is arranged around the opening of the filter cavity 201 and the cover body 300 presses the sealing ring 700 onto the filter cartridge 200. The sealing ring 700 arranged between the cover body 300 and the filter cartridge 200 is used to improve the sealing performance of the solid impurity filtering device for water quality detection. After the cover body 300 is rotated to close the opening of the filter cavity 201, the cover body 300 presses the sealing ring 700 to prevent the sample from leaking from the gap between the cover body 300 and the filter cartridge 200 during the filtering process, thereby improving the reliability of the solid impurity filtering device for water quality detection.

[0034] Please combine Figure 1 and Figure 2 The cover body 300 is also provided with a liquid injection hopper 306, which is located at one end of the water inlet pipe 302 away from the cover body 300 and is connected to the water inlet pipe 302. By providing the liquid injection hopper 306 on the cover body 300 to guide the sample along the water inlet pipe 302 into the water storage chamber 301, the sample to be filtered can be conveniently poured into the water inlet pipe 302, while reducing the loss caused by sample leakage when pouring the sample into the water storage chamber 301.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A solid impurity filtering device for water quality detection, characterized in that: The filter cartridge comprises a base, on which a filter cartridge and a cover body rotatably connected to the filter cartridge are provided, the filter cartridge having a filter chamber, the filter cartridge being provided with a water filter port communicating with the filter chamber, a filter screen being provided in the filter chamber and the filter screen being located between the cover body and the water filter port, the cover body having a water storage chamber communicating with the filter chamber and a water inlet pipe communicating with the water storage chamber being provided on the cover body, a movable push plate being provided in the water storage chamber, the push plate being located at a side of a connection between the water inlet pipe and the water storage chamber away from the filter screen, a drive assembly being provided on the cover body for transmission connection with the push plate, and the drive assembly drives the push plate to approach or move away from the filter screen.

2. A solid impurity filtering device for water quality detection as claimed in claim 1, characterized in that: A plurality of filter screens are stacked and arranged in the filter cartridge along the moving direction of the push plate, and the sizes of the meshes on the plurality of filter screens gradually decrease along the direction approaching the water filter port.

3. A solid impurity filtering device for water quality detection as claimed in claim 2, characterized in that: The filter screen comprises a frame body, and two opposite sides of the frame body are respectively provided with a protrusion and a groove, and the protrusion on one of the two adjacent filter screens extends into the groove on the other filter screen.

4. A solid impurity filtering device for water quality detection as claimed in claim 3, characterized in that: An accommodating groove is arranged on the inner peripheral wall of the filter cartridge, the accommodating groove is communicated with the water storage cavity and the frame body is in contact with the inner wall of the accommodating groove.

5. A solid impurity filtering device for water quality detection as claimed in claim 1, characterized in that: The driving assembly includes a cylinder and a push rod arranged at the output end of the cylinder, and one end of the push rod away from the cylinder extends into the water storage cavity and is fixedly connected to the push plate.

6. A solid impurity filtering device for water quality detection as claimed in claim 1, characterized in that: A protruding first mounting portion is provided on the outer peripheral wall of the filter cartridge and a mounting shaft is provided on the first mounting portion. An extending portion is provided on the outer peripheral wall of the cover body and a mounting hole matched with the mounting shaft is provided on the extending portion.

7. A solid impurity filtering device for water quality detection as claimed in claim 1, characterized in that: A protruding second mounting portion is provided on the outer peripheral wall of the filter cartridge and a rotatable locking screw is provided on the second mounting portion, a locking plate is provided on the outer peripheral wall of the cover body and is in contact with the second mounting portion, a groove is provided on the locking plate to accommodate part of the locking screw, a locking knob is provided on the locking screw and the locking knob abuts against a side of the locking plate away from the second mounting portion and presses the locking plate onto the second mounting portion.

8. A solid impurity filtering device for water quality detection as claimed in claim 7, characterized in that: The second mounting portion is provided with a connecting shaft, one end of the locking screw has a connecting portion, and the connecting portion is provided with a through hole matched with the connecting shaft.

9. A solid impurity filtering device for water quality detection as claimed in claim 1, characterized in that: A sealing ring is provided on one side of the filter cartridge close to the cover body. The sealing ring is arranged around the opening of the filter cavity and the cover body presses the sealing ring onto the filter cartridge.

10. A solid impurity filtering device for water quality detection as claimed in claim 1, characterized in that: The cover body is also provided with a liquid injection hopper, which is located at one end of the water inlet pipe away from the cover body and is connected to the water inlet pipe.

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