An automatic filtering device for water quality detection

Abstract

The utility model relates to an automatic filter device for water quality detection, include: the shell is inside and is established pressure chamber, the left and right sides of shell are fixedly connected with water inlet and drain respectively, and the position of pressure chamber is detachably connected with filter core near drain, pump liquid subassembly is set up in the side of shell near water inlet, is used for reciprocating pumping liquid. The utility model relates to the technical field of water quality detection. The automatic filter device for water quality detection can be used for filtering the impurity particle of interfering detection in sewage through the filter core set up, thereby improves the detection accuracy, and the anti -blocking subassembly set up in the shell can use the backflushing filter core of filtered water when reciprocating pumping water of pump liquid subassembly, can effectively prolong the service life of filter core, thereby reduces the use cost of automatic filter device, further improves the practicality of automatic filter device.

Description

Technical Field

[0001] This utility model relates to the technical field of water quality testing, and in particular to an automatic filtration device for water quality testing. Background Technology

[0002] The main purpose of water quality testing is to assess the quality and suitability of water, specifically including: ensuring drinking water safety: ensuring that drinking water is free of harmful microorganisms (such as bacteria and viruses), heavy metals (such as lead, mercury, and arsenic), and excessive chemicals (such as nitrates and fluorides), and preventing waterborne diseases. Assessing environmental pollution: monitoring the pollution status of rivers, lakes, and seas, and assessing the impact of industrial, agricultural, and domestic wastewater on the ecological environment.

[0003] In existing technologies, many indicators (such as heavy metals, nitrates, phosphates and other dissolved substances) in water quality testing need to be separated from suspended particulate matter in the water sample before they can be accurately measured. Therefore, in order to improve the accuracy of the test, the water sample to be tested is usually filtered once to remove factors in the water that may affect the test.

[0004] When filtering sample water, the particles removed by the filter cartridge can clog the mesh, requiring frequent replacement. This increases both the maintenance frequency and the operating cost of the equipment. To address these issues, an automatic filtration device for water quality testing is proposed. Utility Model Content

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] An automatic filtration device for water quality testing includes:

[0007] The housing has a pressure chamber inside. The left and right sides of the housing are fixedly connected to the water inlet and the drain outlet, respectively. A filter element is detachably connected to the pressure chamber near the drain outlet.

[0008] The pump assembly, located on the side of the housing near the inlet, is used for reciprocating pumping of liquid;

[0009] An anti-clogging component is installed inside the drain outlet for backflushing the filter element. The anti-clogging component includes a block and a guide rod. The guide rod is coaxially installed inside the drain outlet via a bracket. The block is slidably connected to the side of the guide rod near the filter element. The inner wall of the drain outlet near the filter element has a protruding limiting part that fits with the block.

[0010] Furthermore, the outer wall of the housing is connected to a drain port that communicates with the pressure chamber, and a pressure valve is installed inside the drain port.

[0011] Furthermore, the outer wall of the guide rod is provided with a track groove for assisting the reciprocating movement of the block, and the block is provided with balls that contact the track groove.

[0012] Furthermore, the track groove extends back and forth in an S-shape along the circumference of the guide rod until the ends meet, so that the surface of the guide rod has multiple peaks and multiple valleys, one of which has a greater depth than the others.

[0013] Furthermore, the top of the crest and the bottom of the trough extend along the tangent direction of the crest and trough respectively to form a receiving groove for accommodating the ball.

[0014] Furthermore, the pump assembly includes a linear actuator and a piston. The linear actuator is fixedly connected to the side wall of the housing. The output shaft of the linear actuator extends into the pressure chamber and is fixedly connected to the piston. The side wall of the piston is connected to a one-way valve for liquid passage.

[0015] In summary, this utility model has at least one of the following beneficial technical effects:

[0016] 1. An automatic filtration device for water quality testing, wherein the filter element can be used to filter out impurity particles in sewage that interfere with the detection, thereby improving the detection accuracy; and the anti-clogging component set in the housing can use the filtered water to backwash the filter element when the pumping component pumps water back and forth, which can effectively extend the service life of the filter element, thereby reducing the operating cost of the automatic filtration device and further improving the practicality of the automatic filtration device.

[0017] 2. This automatic filtration device for water quality testing, through its set track groove, can assist in the movement of the block, so that when the liquid backflows and flushes the filter element, it can stably block the drain outlet, preventing a large amount of filtered water from flowing back. At the same time, a specially designed trough can reduce the opening gap between the block and the limiting part. When the piston is pressing the sewage, the efficiency of sewage discharge is greatly reduced. Therefore, the pressure between the piston and the filter element will be higher than the pressure of normal sewage filtration. So when the pressure exceeds the threshold of the pressure valve, the sewage and the dirt particles intercepted by the filter element will be discharged through the drain outlet, achieving a periodic self-cleaning effect, which can effectively improve the practicality of the automatic filtration device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an automatic filtration device for water quality testing according to the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of an automatic filtration device for water quality testing according to the present invention.

[0021] Figure 3 This is a schematic diagram of the anti-clogging component in an automatic filtration device for water quality testing according to the present invention.

[0022] Figure 4 This is a schematic diagram of the track groove in an automatic filtration device for water quality testing according to the present invention.

[0023] In the diagram, 1. Housing; 2. Pump assembly; 21. Linear actuator; 22. Piston; 3. Anti-clogging assembly; 31. Block; 32. Guide rod; 4. Pressure chamber; 5. Inlet; 6. Drain; 7. Filter element; 8. Bracket; 9. Limiting part; 10. Sewage outlet; 11. Pressure valve; 12. Track groove; 13. Ball bearing; 14. Crest; 15. Trough; 16. Receiving groove; 17. Check valve. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Example:

[0026] Reference Figure 1 - Figure 4 This utility model discloses an automatic filtration device for water quality testing, comprising:

[0027] The housing 1 has a pressure chamber 4 inside. The left and right sides of the housing 1 are respectively fixedly connected to a water inlet 5 and a drain outlet 6. A filter element 7 is detachably connected to the pressure chamber 4 near the drain outlet 6.

[0028] The pump assembly 2 is located on the side of the housing 1 near the inlet 5 and is used for reciprocating pumping of liquid.

[0029] The anti-clogging component 3 is installed inside the drain outlet 6 for backflushing the filter element 7. The anti-clogging component 3 includes a block 31 and a guide rod 32. The guide rod 32 is coaxially installed inside the drain outlet 6 via a bracket 8. The block 31 is slidably connected to the side of the guide rod 32 near the filter element 7. A limiting part 9 that fits against the block 31 is protruded on the inner wall of the drain outlet 6 near the filter element 7.

[0030] In this embodiment, observation Figure 1 and Figure 2It can be observed that by setting up a housing 1, a pressure chamber 4 is opened inside the housing 1. The left and right sides of the housing 1 are respectively fixedly connected to the inlet 5 and the outlet 6, which are connected to the pressure chamber 4. The filter element 7 is detachably connected to the pressure chamber 4 near the outlet 6. A pump assembly 2 is set on the side of the housing 1 near the inlet 5. The pump assembly 2 includes a linear actuator 21 and a piston 22. The linear actuator 21 is fixedly connected to the side wall of the housing 1. The output shaft of the linear actuator 21 extends into the pressure chamber 4 and is fixedly connected to the piston 22. The side wall of the piston 22 is connected to a one-way valve 17 for liquid passage. At this time, it is only necessary to use the linear actuator 21 of the pump assembly 2 to push the piston 22 to the right in the pressure chamber 4 to draw the water to be tested into the inlet 5. When the piston 22 returns to its original position, it will push the water through the one-way valve 17 into the space between the piston 22 and the filter element 7. When the piston 22 continues to move to the right, it will push the water into the outlet 6. Thus, the filter element 7 can filter the impurities in the water and improve the accuracy of water quality detection.

[0031] Since filter element 7 will inevitably become clogged when filtering impurities, in order to extend its service life, ensure its filtration efficiency, and thus guarantee the efficiency of water quality testing, Figure 2 As can be seen, an anti-clogging component 3 is provided inside the drain outlet 6. The anti-clogging component 3 includes a block 31 and a guide rod 32. The guide rod 32 is coaxially set inside the drain outlet 6 through the bracket 8. The block 31 is slidably connected to the side of the guide rod 32 near the filter element 7. A limiting part 9 that fits with the block 31 is protruded on the inner wall of the drain outlet 6 near the filter element 7.

[0032] At this time, when piston 22 approaches filter element 7, the liquid is pressurized and passes through filter element 7 before being discharged from drain port 6. When piston 22 returns to its original position, the space between piston 22 and filter element 7 increases, thereby generating negative pressure. Liquid will enter the space between piston 22 and filter element 7 through drain port 6 and inlet port 5. When the liquid in drain port 6 is drawn back into pressure chamber 4, the filtered water can be used to backwash filter element 7 to prevent filter element 7 from clogging. When the liquid flows back, the liquid will push block 31 to block drain port 6, which can prevent a large amount of filtered liquid from flowing back when piston 22 returns to its original position, affecting the filtration efficiency of water quality, thereby effectively improving the practicality of automatic filtration components.

[0033] Since the filter element 7 is a consumable, although the anti-clogging component 3 extends the service life of the filter element 7, it still needs to be replaced after a long period of use. Therefore, the filter element 7 needs to be detachably connected to the pressure chamber 4 by means of bolt fastening, snap fastening, etc., to ensure that the filter element 7 can be replaced normally in the future.

[0034] In a further preferred embodiment of this invention, as the amount of wastewater filtered increases, more and more impurities accumulate between the piston 22 and the filter element 7, which affects subsequent wastewater filtration. Therefore, observation is needed. Figure 2 It can be seen that the outer wall of the housing 1 is connected to a drain port 10 that communicates with the pressure chamber 4. A pressure valve 11 is provided in the drain port 10. After the automatic filtration device is used, the sewage containing a large number of pollutant particles can be actively discharged through the pressure valve 11 to ensure the water filtration effect in subsequent use.

[0035] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the outer wall of the guide rod 32 is provided with a track groove 12 for assisting the reciprocating movement of the block 31. The block 31 is provided with a ball bearing 13 that contacts the track groove 12, which can improve the movement stability of the block 31 and stably block the drain outlet 6 when the liquid backflows and backwashes the filter element 7, thus preventing a large amount of filtered water from flowing back.

[0036] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the track groove 12 extends in an S-shape along the circumference of the guide rod 32 until the ends meet, forming multiple peaks 14 and multiple troughs 15 on the surface of the guide rod 32. One of the troughs 15 is deeper than the others. When the ball 13 moves to this special trough 15, the reset stroke of the block 31 is shortened, thereby reducing the opening gap between the block 31 and the limiting part 9. At this time, when the piston 22 presses the sewage, the efficiency of sewage discharge is greatly reduced. Therefore, the pressure between the piston 22 and the filter element 7 will be higher than the pressure of normal sewage filtration. So when the pressure exceeds the threshold of the pressure valve 11, the sewage and the dirty particles intercepted by the filter element 7 will be discharged through the drain port 10, achieving a periodic self-cleaning effect, which can effectively improve the practicality of the automatic filtration device.

[0037] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the top of the crest 14 and the bottom of the trough 15 extend along the tangent direction of the crest 14 and the trough 15 respectively to form a receiving groove 16 for accommodating the ball 13. When the block 31 moves to the position of the crest 14 or the trough 15 on the track groove 12, the inertia of the block 31 causes the ball 13 to roll into the receiving groove 16. When the block 31 is reset, the ball 13 can be stably entered into the track groove 12 on the other side, avoiding the block 31 from moving back and forth in the same section of the track groove 12, thus ensuring the stability of periodic sewage discharge.

[0038] The implementation principle of the above embodiment is as follows: sewage pipe and clean water pipe are connected to the water inlet 5 and water outlet 6 of the housing 1 respectively. Then, the linear driver 21 is started to push the piston 22 to move back and forth in the pressure chamber 4 to pump liquid. After the liquid passes through the filter element 7, the impurities that affect the detection will be filtered out. Then the filtered water will be discharged through the clean water pipe for detection.

[0039] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic filtration device for water quality testing, characterized in that, include: The housing (1) has a pressure chamber (4) inside. The left and right sides of the housing (1) are respectively fixedly connected to the water inlet (5) and the drain outlet (6). The pressure chamber (4) is detachably connected to the drain outlet (6). The pump assembly (2) is located on the side of the housing (1) near the inlet (5) and is used for reciprocating pumping of liquid; An anti-clogging component (3) is installed inside the drain outlet (6) for backflushing the filter element (7). The anti-clogging component (3) includes a block (31) and a guide rod (32). The guide rod (32) is coaxially installed inside the drain outlet (6) via a bracket (8). The block (31) is slidably connected to the side of the guide rod (32) near the filter element (7). A limiting part (9) that fits against the block (31) is protruded on the inner wall of the drain outlet (6) near the filter element (7).

2. The automatic filtration device for water quality testing according to claim 1, characterized in that, The outer wall of the housing (1) is connected to a drain port (10) that communicates with the pressure chamber (4), and a pressure valve (11) is provided inside the drain port (10).

3. An automatic filtration device for water quality testing according to claim 2, characterized in that, The outer wall of the guide rod (32) is provided with a track groove (12) for assisting the reciprocating movement of the block (31), and the block (31) is provided with a ball (13) that contacts the track groove (12).

4. An automatic filtration device for water quality testing according to claim 3, characterized in that, The track groove (12) extends back and forth in an S-shape along the circumference of the guide rod (32) until the ends meet, so that the surface of the guide rod (32) forms multiple peaks (14) and multiple valleys (15), one of the valleys (15) is deeper than the other valleys (15).

5. An automatic filtration device for water quality testing according to claim 4, characterized in that, The top of the crest (14) and the bottom of the trough (15) extend along the tangential direction of the crest (14) and the trough (15) respectively to form a receiving groove (16) for accommodating the ball (13).

6. An automatic filtration device for water quality testing according to claim 5, characterized in that, The pump assembly (2) includes a linear actuator (21) and a piston (22). The linear actuator (21) is fixedly connected to the side wall of the housing (1). The output shaft of the linear actuator (21) extends into the pressure chamber (4) and is fixedly connected to the piston (22). The side wall of the piston (22) is connected to a one-way valve (17) for liquid passage.

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