Underground water sampling pretreatment device

Abstract

The invention discloses an underground water sampling pretreatment device, and relates to the technical field of underground water separation treatment, the underground water sampling pretreatment device comprises a central driving shaft assembly, a first coupling part and a second coupling part, the first coupling part and the second coupling part are arranged at the upper position and the lower position of the central driving shaft assembly, the first coupling part is connected with a switching transmission assembly, and the second coupling part is connected with a filter disc assembly; the impeller assembly is assembled on the central driving shaft assembly; an inner sleeve and an outer sleeve sequentially sleeve the central driving shaft assembly from inside to outside, and a first filter plate assembly and a second filter plate assembly arranged between the inner sleeve and the outer sleeve are annularly arranged on the outer wall of the outer sleeve. Under the clockwise action of the impeller assembly, water sequentially passes through the first filter plate assembly, the second filter plate assembly and the third filter channel from the outer sleeve to enter the inner sleeve and penetrates through the filter disc assembly from top to bottom to complete multiple filtration, so that water treatment is comprehensively improved; and each filter disc can be backwashed.

Description

Technical Field

[0001] The invention relates to the technical field of groundwater separation and treatment, in particular to a groundwater sampling pretreatment device. Background Art

[0002] Since the leaf fragments and degraded suspended matter in groundwater may have different sizes, densities and shapes, their distribution and precipitation states are complex and diverse. For example, well water is in an open-air environment and contains a lot of impurities. Pretreatment is generally required during the sampling and use of such groundwater. However, the existing treatment systems have the following problems: first, they may not be able to completely remove these pollutants, or the cleaning effect is poor, resulting in the treated water still containing a certain amount of suspended matter; second, they do not have efficient backwashing capabilities, and are prone to clogging after being used for a period of time, requiring manual cleaning or replacement of filters, which is time-consuming and labor-intensive, and also increases costs and difficulty. To this end, a groundwater sampling pretreatment device is provided. Summary of the invention

[0003] The purpose of the present invention is to provide a groundwater sampling pretreatment device. The present invention utilizes the driving action of the motor in both positive and negative directions. Under the clockwise action of the impeller assembly, water is passed from the outer sleeve through the first filter plate assembly, the second filter plate assembly and the third filter channel in sequence into the inner sleeve and passes through the filter plate assembly from top to bottom to complete multiple filtration, so that the water treatment is comprehensively improved. At the same time, under the counterclockwise action of the impeller assembly, each filter plate can be backwashed.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a groundwater sampling pretreatment device, comprising: a central drive shaft assembly, a first coupling part and a second coupling part arranged at the upper and lower positions of the central drive shaft assembly, the first coupling part is connected to a switching transmission assembly, the second coupling part is connected to a filter assembly, and an impeller assembly assembled on the central drive shaft assembly; the central drive shaft assembly is also sequentially sleeved with an inner sleeve and an outer sleeve from the inside to the outside, the central drive shaft assembly is assembled in the middle of the inner sleeve, the outer wall of the outer sleeve is annularly provided with a first filter plate assembly, and a second filter plate assembly arranged between the inner sleeve and the outer sleeve; and a valve plate assembly is arranged at a position where the inner sleeve is higher than the filter plate assembly, when the impeller assembly on the central drive shaft assembly rotates clockwise, under the action of the first coupling part, the switching transmission assembly drives the valve plate assembly to open to form a third filter channel and acts as an intermediate transmission force to drive the inner sleeve and the outer sleeve to rotate; and a one-way valve body assembly is arranged on the inner sleeve near the lower part of the second mounting plate, when the one-way valve body assembly is opened, it is used for water to pass through the filter plate assembly from bottom to top to complete backwashing.

[0005] Preferably, the central drive shaft assembly includes an electric wire and a motor arranged at the bottom end of the electric wire; a bearing seat and a main shaft connected to the bearing seat are installed at the output end of the motor; the first coupling part includes a second damping short strip arranged on the inner wall of the central cavity of the transmission ring, and a first damping short strip arranged at a position of the main shaft corresponding to the second damping short strip, and the second damping short strip in the central cavity of the transmission ring and the first damping short strip are filled with viscous hydraulic oil; the second coupling part includes a second damping long strip arranged in an annular distribution on the inner wall of the long shaft sleeve, and a first damping long strip arranged on the main shaft corresponding to the position of the second damping long strip, and the long shaft sleeve and between the second damping long strip and the first damping short strip are filled with viscous hydraulic oil.

[0006] Preferably, the impeller assembly includes a plurality of annularly distributed fan blades, which are placed between the switching transmission assembly and the filter assembly, and when the fan blades rotate clockwise, they are used to promote the water body to pass through the filter plate from top to bottom to complete multiple filtration, and when the fan blades switch counterclockwise, they are used to drive the water body to self-clean the filter plate from bottom to top.

[0007] Preferably, the one-way valve body assembly includes a first slot opened in the lower part of the inner sleeve, water inlet holes opened on both sides of the first slot, and a mounting portion assembled with the inner side of the first slot, and the mounting portion has one-way valve plates extending to both sides of the water inlet hole respectively, which are used to cover the water inlet hole on the inside.

[0008] Preferably, the switching transmission assembly includes a transmission ring, and two sets of locking tongue mechanisms arranged opposite to each other on the transmission ring, and the inner wall of the inner sleeve is provided with locking grooves at positions corresponding to the two sets of locking tongue mechanisms; each set of the locking tongue mechanisms includes a transmission member and a mounting member arranged on the transmission ring, the transmission member is "L"-shaped and its corner position is rotatably mounted on the transmission ring by a pin shaft, the mounting member is "L"-shaped and a spring sheet is arranged on its inner side, a centrifugal block is arranged at the end of the side wall of the transmission member close to the mounting member, the side wall of the transmission member where the centrifugal block is located can abut against the spring sheet, and a lock tongue that can be telescopically moved and passes through the transmission ring, a locking head is arranged at one end of the lock tongue close to the lock groove, and a limiting column is arranged at one end of the lock tongue away from the lock groove, and a second limiting groove fixed at the end of the transmission member can be limited and moved inside the limiting column.

[0009] Preferably, the valve plate assembly includes a through groove formed on the inner sleeve, in which a valve plate body that can be opened and closed is installed via a long pin shaft, and a transmission bar fixed on the top of the valve plate body and rotatable relative to the long pin shaft; an installation groove is formed on the outer wall of the transmission ring, and one end of the transmission bar away from the long pin shaft extends into the installation groove and is provided with a first limit groove, and a limit rod vertically installed in the installation groove, and the limit rod can slide in the installation groove to a limited position.

[0010] Preferably, the filter disc assembly comprises a long shaft sleeve and a plurality of filter discs annularly distributed on the outer wall of the long shaft sleeve, and the filter discs are curved elastic net structures.

[0011] Preferably, the outer sleeve and the inner sleeve are integrally formed, and the inner sleeve is further provided with an upper valve plate structure and a lower valve plate structure; the upper valve plate structure includes a first mounting plate fixed to the upper inner wall of the inner sleeve, the first mounting plate divides the upper part of the inner sleeve into a sewage discharge chamber, and the first mounting plate is provided with an annularly distributed drainage hole, and a first one-way valve plate covering the drainage hole and located on the upper surface of the first mounting plate, a mounting hole is provided in the middle of the first mounting plate, and the mounting hole is used for the rotational assembly of the bearing seat; the lower valve plate structure includes a second mounting plate fixed to the lower inner wall of the inner sleeve, the second mounting plate divides the lower part of the inner sleeve into a water collecting chamber for receiving filtered clean water, and the second mounting plate is provided with an annularly distributed through hole, and a second one-way valve plate covering the through hole and located below the second mounting plate.

[0012] Preferably, a second slot is provided on the inner wall of the water collecting chamber near the bottom of the second mounting plate, and a pressure valve assembly is arranged in the second slot; the pressure valve assembly includes a valve sleeve, and a valve chamber provided in the valve sleeve, the valve chamber forms a first step portion and a second step portion at the inlet and outlet ends of the valve sleeve respectively, a valve body is provided at the inlet end of the first step portion, the valve body can be telescopically movable relative to the inlet end and a third step portion is provided on the inner side of the first step portion, the diameter of the third step portion is smaller than the diameter of the valve chamber, and a spring is provided between the third step portion and the second step portion, which is used to first discharge the air inside the water collecting chamber and then discharge the filtered clean water when the internal pressure of the water collecting chamber increases.

[0013] Preferably, the first filter plate assembly includes long grooves arranged in an annular distribution on the circumference of the outer sleeve, and a plurality of groups of bearing parts corresponding to the positions of the long grooves and distributed on the outer wall of the outer sleeve, each group of the bearing parts is rotatably mounted with a first filter plate through a pin, the first filter plate is provided with a filtering area corresponding to the long groove area, and an extension part provided on the side of the first filter plate away from its own bearing part, the extension part being triangular; when the outer sleeve drives the first filter plate to rotate clockwise as a whole, under the action of the extension part, the first filter plate is tightly attached to the outer sleeve to form a first filtering structure, and water flows from the outside of the outer sleeve through the filtering area The outer sleeve drives the first filter plate to rotate counterclockwise as a whole, and under the action of the extension part, the water flow is forced to open through the cross section of the extension part, and the water flow flushes from the inside of the filter area to the outside to achieve self-cleaning of the filter area; the second filter plate assembly includes a plurality of second filter plates fixed on the outer wall of the inner sleeve, and the filtering direction of the plurality of second filter plates is clockwise. When the inner sleeve drives the second filter plates to rotate clockwise, the water entering the first filter plate assembly can be filtered for the second time, and when the inner sleeve drives the second filter plate to rotate counterclockwise, the water flow can self-clean it.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts a connection method of a first coupling part and a second coupling part between the central drive shaft assembly and the switching transmission assembly and the filter assembly, and the impeller assembly is fixedly assembled on the central drive shaft assembly. Under the clockwise action of the impeller assembly, water passes from the outside of the outer sleeve through the first filter plate assembly, the second filter plate assembly, and the third filter channel formed by the valve plate assembly in sequence into the inner sleeve, and passes through the filter plate assembly from top to bottom to complete multiple filtration, which saves energy while facilitating transmission control between machines.

[0015] The present invention also has a counterclockwise self-cleaning function. When the motor works counterclockwise, the first filter plate assembly and the second filter plate assembly can perform self-reverse flushing due to their own structural characteristics. At the same time, the counterclockwise action of the motor, combined with the one-way valve body assembly of the inner sleeve close to the lower part of the second mounting plate, allows water to pass through the filter plate assembly from bottom to top for self-cleaning. At the same time, the valve plate assembly is driven to close under the counterclockwise action of the transmission ring assembly, thereby completing the effective treatment of sewage after self-cleaning.

[0016] As other embodiments of the present invention, a method for extracting clean water and backwashing wastewater is provided, wherein the clean water is processed from top to bottom by the filter plate, and under the one-way flow action of the second one-way valve plate, the clean water can enter the water collecting chamber for collection, and finally be discharged by the pressure valve assembly; and the wastewater generated during the backwashing process can be discharged in one direction by opening the first one-way valve plate where the upper valve plate structure is located upward.

[0017] As other embodiments of the present invention, the extension portion where the first filter plate assembly is located has a special triangular shape. Under the overall clockwise action, the first filter plate will be further made close to the outer wall of the outer casing, and is used for primary water filtration in the filter area. In the overall counterclockwise process, when the shape of the extension portion acts on the water flow, the water will open it and the impact of the water flow will backwash the filter area from the inside to the outside, realizing a process of reverse flushing.

[0018] The second filter plate assembly is further configured to set the filtering direction of the second filter plate to be arranged clockwise. When it rotates clockwise, it can cut the movement of the water body, so that the water passing through the second filter plate becomes clear. When it rotates counterclockwise, the water can act in the opposite direction on the second filter plate for cleaning in the opposite direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the disassembled structure; Figure 3 This is a schematic diagram showing the internal structure of the present invention in section along AA direction; Figure 4 It is a schematic diagram of the top view of the structure of the present invention; Figure 5 This is a schematic diagram showing the internal structure of the present invention in section BB; Figure 6 for Figure 5 A schematic diagram of the enlarged structure at C; Figure 7 This is a schematic diagram of a disassembled structure of the central drive shaft assembly, the switching transmission assembly, and the filter assembly of the present invention; Figure 8 It is a partial enlarged structural schematic diagram of the filter assembly of the present invention; Fig. 9 It is a partial enlarged structural schematic diagram of the switching transmission assembly of the present invention; Fig.10 It is a schematic diagram of the upper cross-sectional structure of the switching transmission assembly of the present invention; Fig.11 It is a schematic diagram of the lower cross-section structure of the switching transmission assembly of the present invention; Fig.12 It is a schematic diagram of the working state structure of the present invention; Fig.13 It is a partial enlarged structural schematic diagram of the central drive shaft assembly of the present invention; Fig.14 It is a partial enlarged structural schematic diagram of the one-way valve body assembly of the present invention; Fig.15 It is a partial enlarged structural schematic diagram of the inner sleeve and central drive shaft assembly of the present invention.

[0020] In the figure: 111, outer sleeve; 112, bearing portion; 211, first filter plate; 212, filter area; 213, extension part; 311, inner sleeve; 3111, lock groove; 312, first one-way valve plate; 313, first mounting plate; 316, first notch; 317, valve plate body; 3171, transmission bar; 3172, long pin shaft; 3173, first limit groove; 3174, mounting groove; 318, through groove; 411, second filter plate; 511, motor; 512, wire; 611, water collecting chamber; 612, second one-way valve plate; 613, second mounting plate; 614, through hole; 711, main shaft; 712, bearing seat; 713, first damping short strip; 714, first damping long strip; 811, transmission ring; 8111, second damping short strip; 812, centrifugal block; 813, transmission member; 8131, second limiting groove; 814, mounting member; 815, spring piece; 816, lock tongue; 8161, limiting column; 817, lock head; 911, fan blade; 1011, filter sheet; 1012, long shaft sleeve; 1013, second damping strip; 12. second notch; 1211. valve sleeve; 1213. valve body; 1214. spring; 1215. valve chamber; 141. One-way valve plate; 142. Mounting portion. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. The following describes various embodiments of the present invention in detail in conjunction with the drawings.

[0022] Example 1

[0023] See also Figures 1 to 15 The present invention preferably provides a technical solution: a groundwater sampling pretreatment device, comprising: a central drive shaft assembly, a first coupling part and a second coupling part arranged at the upper and lower positions of the central drive shaft assembly, the first coupling part is connected to a switching transmission assembly, the second coupling part is connected to a filter assembly, and an impeller assembly assembled on the central drive shaft assembly; the central drive shaft assembly is also sequentially sleeved with an inner sleeve 311 and an outer sleeve 111 from the inside to the outside, the outer sleeve 111 and the inner sleeve 311 are integrally formed, the central drive shaft assembly is assembled in the middle of the inner sleeve 311, and the outer sleeve 111 is annularly provided with a first filter plate assembly for primary filtration of incoming water, and a second filter plate assembly arranged between the inner sleeve 311 and the outer sleeve 111, which can be used for secondary filtration of incoming water; and a valve plate assembly is arranged at a position of the inner sleeve 311 higher than the filter plate assembly, When the impeller assembly on the central drive shaft assembly rotates clockwise, under the action of the first coupling part, the switching transmission assembly drives the valve plate assembly to open to form a third filter channel and acts as an intermediate transmission force to drive the inner sleeve 311 and the outer sleeve 111 to rotate clockwise. Under the clockwise action of the impeller assembly, water passes through the third filter channel formed by the first filter plate assembly, the second filter plate assembly and the valve plate assembly from the outside of the outer sleeve 111 in sequence into the inner sleeve 311, and passes through the filter plate assembly from top to bottom to complete multiple filtration; and a one-way valve body assembly is arranged on the inner sleeve 311 near the lower part of the second mounting plate 613. When the impeller assembly on the central drive shaft assembly rotates counterclockwise, under the action of the impeller assembly, the one-way valve body assembly opens and allows water to pass through the filter plate assembly from bottom to top for its self-cleaning, and at the same time drives the valve plate assembly to close under the action of the transmission ring assembly.

[0024] Furthermore, the central drive shaft assembly includes an electric wire 512 and a motor 511 arranged at the bottom end of the electric wire 512; a bearing seat 712 and a main shaft 711 connected to the bearing seat 712 are installed at the output end of the motor 511; the first coupling part includes a second damping short strip 8111 arranged on the inner wall of the central cavity of the transmission ring 811, and a first damping short strip 713 arranged at a position of the main shaft 711 corresponding to the second damping short strip 8111, and the second damping short strip 8111 in the central cavity of the transmission ring 811 and the first damping short strip 713 are filled with viscous hydraulic oil; the second coupling part includes a second damping long strip 1013 arranged in an annular distribution on the inner wall of the long shaft sleeve 1012, and a first damping long strip 714 is arranged on the main shaft 711 corresponding to the position of the second damping long strip 1013, and the long shaft sleeve 1012 and between the second damping long strip 1013 and the first damping short strip 713 are filled with viscous hydraulic oil.

[0025] In this application, if Fig.12 , 13 As shown, when the wire 512 drives the entire device to be suspended and penetrate into the bottom of the well and submerged in the water, it is similar to the process of a water pump being suspended to pump water. The device filters the taken groundwater through multiple filtrations to filter out larger solid particles and suspended matter, and can also perform reverse flushing by itself to increase the subsequent reuse rate; The first design point is that the central drive shaft assembly and the switching transmission assembly and the filter assembly are connected by a first coupling part and a second coupling part, and the impeller assembly is fixedly assembled on the central drive shaft assembly, such as Figure 3 , 7 As shown in Figure 8, when the central drive shaft assembly is running, it can drive the impeller assembly to rotate at high speed, and the coupling connection is filled with viscous hydraulic oil at the connection position, such as Figure 3 , 7 As shown in FIG. 8 , during the high-speed rotation of the central drive shaft assembly, the corresponding switching transmission assembly and the filter assembly are driven to rotate at a low speed under the action of the first coupling part and the second coupling part. Due to the structural characteristics of the switching transmission assembly and the connection relationship with the inner sleeve 311, it can control the opening and closing of the valve plate assembly, and at the same time, it can be used as an intermediate transmission force to drive the inner sleeve 311 and the outer sleeve 111 to rotate, saving energy while facilitating transmission control between machines; The second design point is that, through the structural setting of the first filter plate assembly and the second filter plate assembly, combined with the transmission function of the switching transmission assembly, when the motor 511 works clockwise, the corresponding impeller assembly rotates clockwise at high speed, thereby driving the switching transmission assembly and the filter assembly to rotate at low speed. Under the action of the switching transmission assembly, the inner sleeve 311 and the outer sleeve 111 are driven to rotate clockwise as a whole, such as Figure 1 , 3As shown in , 4, under the action of clockwise rotation, water can penetrate through the first filter plate assembly where the outer sleeve 111 is located to enter between the outer sleeve 111 and the inner sleeve 311 to complete a filtration. The inner sleeve 311 and the outer sleeve 111 rotate clockwise as a whole, which can drive the second filter plate assembly to cut the water flow in a clockwise manner. The secondary filtration of water is achieved through the filtering effect of the second filter plate assembly. When the switching transmission assembly rotates clockwise, it can further drive the valve plate assembly to open to form a third filter channel. The water also enters the inner sleeve 311 through the third filter channel. Under the clockwise action of the impeller assembly, the water enters the inner sleeve 311 from the outside of the outer sleeve 111 through the third filter channel formed by the first filter plate assembly, the second filter plate assembly, and the valve plate assembly in sequence, and passes through the filter plate assembly from top to bottom to complete multiple filtration.

[0026] The third design point is that it has a counterclockwise self-cleaning function. When the motor 511 works counterclockwise, the first filter plate assembly and the second filter plate assembly can perform their own reverse flushing due to their own structural characteristics. At the same time, the counterclockwise action of the motor 511, combined with the one-way valve body assembly of the inner sleeve 311 near the lower part of the second mounting plate 613, allows water to pass through the filter plate assembly from bottom to top for its self-cleaning. At the same time, the valve plate assembly is driven to close under the counterclockwise action of the transmission ring assembly, thereby completing the effective treatment of sewage after self-cleaning.

[0027] Furthermore, the impeller assembly includes a plurality of annularly distributed blades 911. When the blades 911 rotate clockwise, they are used to promote the water to pass through the filter plate 1011 from top to bottom to complete multiple filtration. When the blades 911 switch counterclockwise, they are used to drive the water to self-clean the filter plate 1011 from bottom to top.

[0028] Furthermore, the one-way valve body assembly includes a first slot 316 opened at the lower part of the inner sleeve 311, water inlet holes opened on both sides of the first slot 316, and a mounting portion 142 assembled with the inner side of the first slot 316, and the mounting portion 142 has one-way valve plates 141 extending to both sides of the water inlet hole for covering the water inlet hole on the inside.

[0029] like Figure 5 , 8 As shown in , 14 and 15, by further setting a one-way valve body assembly, when the impeller assembly rotates clockwise at a high speed, the water flows from top to bottom through the filter assembly under its action to complete multiple filtration. At this time, the water pressure is a pressure from the inside to the outside. At this time, the corresponding one-way valve plate 141 is close to the inside and covers the water inlet hole, and when the impeller assembly rotates counterclockwise at a high speed, an upward negative pressure is provided, so that the one-way valve plate 141 moves away from the water inlet hole. At this time, the corresponding channel is opened, and the water flows under the action of the impeller assembly, reversely flushes the filter assembly from bottom to top.

[0030] Example 2

[0031] As another embodiment of the present invention, the valve plate assembly includes a through groove 318 opened on the inner sleeve 311, in which a valve plate body 317 that can be opened and closed is installed through a long pin shaft 3172, and a transmission bar 3171 fixed on the top of the valve plate body 317 and rotatable relative to the long pin shaft 3172; an installation groove 3174 is opened on the outer wall of the transmission ring 811, and one end of the transmission bar 3171 away from the long pin shaft 3172 extends into the installation groove 3174 and is provided with a first limit groove 3173, and a limit rod vertically installed in the installation groove 3174, and the limit rod can slide in the installation groove 3174 within a limited position.

[0032] Furthermore, the switching transmission assembly includes a transmission ring 811, and two sets of lock tongue mechanisms arranged opposite to each other on the transmission ring 811. The inner wall of the inner sleeve 311 is provided with lock grooves 3111 at positions corresponding to the two sets of lock tongue mechanisms; each set of lock tongue mechanisms includes a transmission member 813 and a mounting member 814 arranged on the transmission ring 811. The transmission member 813 is "L"-shaped and its corner position is rotatably mounted on the transmission ring 811 through a pin shaft. The mounting member 814 is "L"-shaped and has a spring sheet 815 arranged on its inner side. A centrifugal block 812 is provided at the end of the side wall of 813 close to the mounting member 814. The side wall of the transmission member 813 where the centrifugal block 812 is located can abut against the spring piece 815, and a lock tongue 816 that can be telescopically moved and passes through the transmission ring 811, a lock head 817 is provided at one end of the lock tongue 816 close to the lock slot 3111, and a limiting column 8161 is provided at one end of the lock tongue 816 away from the lock slot 3111, and a second limiting groove 8131 fixed at the end of the transmission member 813 can be limited and moved inside the limiting column 8161.

[0033] In this embodiment, the valve plate assembly and the switching transmission assembly implemented above are provided, specifically, as follows: Fig. 9 , 10 11, first, through the locking tongue mechanism provided on the transmission ring 811, under normal circumstances, the lock head 817 at the head of the locking tongue 816 is engaged with the locking groove 3111, when the impeller assembly rotates clockwise at high speed to drive the switching transmission assembly to rotate, the inner sleeve 311 rotates with the outer sleeve 111, and in the structure of the valve plate assembly, as shown in FIG. Fig. 9 The transmission bar 3171 serves as a link to connect the transmission ring 811 and the valve plate body 317 where the inner sleeve 311 is located. After the transmission ring 811 rotates clockwise and accelerates to a certain extent, the transmission member 813 will swing outward under the centrifugal effect. Fig.10 Due to the limiting effect of the limiting column 8161 and the second limiting groove 8131, the lock tongue 816 is driven to retract inward, so that the lock head 817 is separated from the lock groove 3111, and the static state of the inner sleeve 311 causes a relative displacement between it and the inner sleeve 311. Fig. 9In the process of the transmission bar 3171 acting as a link, due to the transmission relationship between the first limiting groove 3173 and the limiting rod in the installation groove 3174, the valve plate body 317 is driven to open. Figure 4 As shown, a third filtering channel is formed thereby; It is worth noting that when the impeller assembly self-cleans counterclockwise, the corresponding transmission ring 811 will rotate counterclockwise first. The above displacement is offset to close the valve plate body 317. When starting, the transmission ring 811 rotates counterclockwise at a low speed. Under the action of the spring 815, the lock tongue 816 will move to reset, and the lock head 817 will re-engage in the lock groove 3111. When the subsequent transmission ring 811 changes from low speed to high speed, the lock head 817 and the lock groove 3111 are designed to engage in a counterclockwise manner, so that the lock head 817 and the lock groove 3111 work more closely and are always firmly engaged. Although the centrifugal block 812 still has a centrifugal tendency, the lock head 817 cannot be pulled out of the lock groove 3111. It can only be pulled out when it rotates clockwise at a high speed.

[0034] Example 3

[0035] As another embodiment of the present invention, the filter disc assembly includes a long shaft sleeve 1012 and a plurality of filter discs 1011 annularly distributed on the outer wall of the long shaft sleeve 1012 , and the filter discs 1011 are curved elastic net structures.

[0036] like Figure 3 As shown, through the shape and material setting of the filter sheet 1011, the impeller assembly pushes the water flow downward under the clockwise action, and at the same time cooperates with the action of the second coupling part to drive the plurality of filter sheets 1011 to rotate clockwise. When water passes through the filter sheet 1011 from top to bottom, it will be further filtered, and the particles will be blocked on the filter sheet 1011. The particles blocked further downward are larger.

[0037] Example 4

[0038] As other embodiments of the present invention, a treatment method for extracting clean water and backwashing sewage is provided, wherein the outer sleeve 111 is integrally formed with the inner sleeve 311, and the inner sleeve 311 is further provided with an upper valve plate structure and a lower valve plate structure; the upper valve plate structure comprises a first mounting plate 313 fixed to the upper inner wall of the inner sleeve 311, the first mounting plate 313 divides the upper part of the inner sleeve 311 into a sewage discharge chamber, and the first mounting plate 313 is provided with an annularly distributed drainage hole, and a first one-way valve plate 312 covering the drainage hole and located on the upper surface of the first mounting plate 313; the lower valve plate structure comprises a second mounting plate 613 fixed to the lower inner wall of the inner sleeve 311, the second mounting plate 613 divides the lower part of the inner sleeve 311 into a water collecting chamber 611 for receiving filtered clean water, and the second mounting plate 613 is provided with an annularly distributed through hole 614, and a second one-way valve plate 612 covering the through hole 614 and located below the second mounting plate 613.

[0039] Furthermore, a second slot 12 is provided on the inner wall of the water collecting chamber 611 near the bottom of the second mounting plate 613, and a pressure valve assembly is arranged in the second slot 12; the pressure valve assembly includes a valve sleeve 1211, and a valve chamber 1215 provided in the valve sleeve 1211, the valve chamber 1215 forms a first step portion and a second step portion at the inlet and outlet ends of the valve sleeve 1211 respectively, a valve body 1213 is provided at the inlet end of the first step portion, the valve body 1213 can be telescopically moved relative to the inlet end and a third step portion is provided on the inner side of the first step portion, the diameter of the third step portion is smaller than the diameter of the valve chamber 1215, and a spring 1214 is provided between the third step portion and the second step portion, when the internal pressure of the water collecting chamber 611 increases, it is used to first discharge the air inside the water collecting chamber 611 and then discharge the filtered clean water.

[0040] In this embodiment, the clean water is treated as follows: Figure 3 , 5 , 6 and 12, the clean water formed by the top-down treatment of the filter plate 1011 can enter the water collecting chamber 611 for collection under the one-way flow effect of the second one-way valve plate 612. When the water continues to increase, as shown in FIG. Figure 3 As shown, the second one-way valve plate 612 is the lower part of the second mounting plate 613. Under the action of pressure, it is still closed, and the corresponding pressure valve assembly is opened under pressure, that is, Figure 6 As shown, the valve body 1213 moves toward the end of the valve sleeve 1211 and compresses the spring 1214. Since the diameter of the third step portion is smaller than the diameter of the valve cavity 1215, the corresponding valve sleeve 1211 channel is opened, and the air in the upper part is discharged first, and then the clean water is discharged accordingly, that is, the water flowing out of the corresponding valve sleeve 1211 is the filtered clean water.

[0041] For the backwashing process, through the upper valve plate structure and the lower valve plate structure, under the counterclockwise action of the impeller assembly, the fan blade 911 structural characteristics provide negative pressure upward, and the through hole 614 remains closed, so that the one-way valve body assembly at the lower position opens, and water enters from the surrounding water inlet holes. The water flows from bottom to top to backwash the filter plate 1011, and then continues to flow upward, so that the first one-way valve plate 312 where the upper valve plate structure is located opens upward, thereby realizing the discharge of self-cleaning sewage.

[0042] Example 5

[0043] As another embodiment of the present invention, the first filter plate assembly includes a long groove distributed in an annular manner around the outer sleeve 111, and a plurality of groups of bearing portions 112 corresponding to the position of the long groove and distributed on the outer wall of the outer sleeve 111. Each group of bearing portions 112 is rotatably mounted with a first filter plate 211 through a pin. The first filter plate 211 is provided with a filtering area 212 corresponding to the long groove area, and an extension portion 213 provided on the side of the first filter plate 211 away from its own bearing portion 112. The extension portion 213 is triangular. When the outer sleeve 111 drives the first filter plate 211 to rotate clockwise as a whole, under the action of the extension portion 213, the first filter plate 211 is closely attached to the outer sleeve 111 to form a first filtering structure, and water flows from the outer sleeve 111 enters the inner side through the filter area 212 from the outer side. When the outer sleeve 111 drives the first filter plate 211 to rotate counterclockwise as a whole, under the action of the extension part 213, the water flow is forced to open through the cross section of the extension part 213, and the water flow is flushed from the inner side of the filter area 212 to the outside to achieve self-cleaning of the filter area 212; the second filter plate assembly includes a plurality of second filter plates 411 fixed on the outer wall of the inner sleeve 311, and the filtering direction of the plurality of second filter plates 411 is clockwise. When the inner sleeve 311 drives the second filter plates 411 to rotate clockwise, the water entering the first filter plate assembly can be filtered for the second time, and when the inner sleeve 311 drives the second filter plate 411 to rotate counterclockwise, the water flow can self-clean it.

[0044] In this embodiment, a first filter plate assembly and a second filter plate assembly are further provided. First, the first filter plate assembly is arranged on the outer wall of the jacket 111. Figures 1 to 4 As shown, due to the extension part 213 provided on one side of the first filter plate 211, the extension part 213 is in a special triangular shape. Under the overall clockwise action, the first filter plate 211 will be further made to be close to the outer wall of the outer jacket 111, and used for primary water filtration of the filter area 212. In the overall counterclockwise process, when the shape of the extension part 213 acts on the water flow, the water will open it and the impact of the water flow will backwash the filter area 212 from the inside to the outside, realizing a process of reverse flushing. The second filter plate assembly is Figure 4 As shown, there can be several settings. When water enters the inner cavity between the inner sleeve 311 and the outer sleeve 111, since the filtering direction of the second filter plate 411 is arranged clockwise, when it rotates clockwise, it can cut the movement of the water body, and some of its suspended matter and particulate matter are attached and blocked on one side of the second filter plate 411, so that the water passing through the second filter plate 411 becomes clear. When rotating counterclockwise, the water can act on the second filter plate 411 in the opposite direction for cleaning in the opposite direction.

[0045] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, among which there are many ways of detachable installation, for example, it can be through the method of plug-in and snap-fit, and for example, through the method of bolt connection, etc.

[0046] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A groundwater sampling pretreatment device, characterized in that: include: A central drive shaft assembly, a first coupling portion and a second coupling portion disposed at upper and lower positions of the central drive shaft assembly, wherein the first coupling portion is connected to a switching transmission assembly, the second coupling portion is connected to a filter assembly, and an impeller assembly assembled on the central drive shaft assembly; An inner sleeve (311) and an outer sleeve (111) are sequentially sleeved on the central drive shaft assembly from the inside to the outside, the central drive shaft assembly is assembled in the middle of the inner sleeve (311), and a first filter plate assembly is annularly arranged on the outer wall of the outer sleeve (111), and a second filter plate assembly is arranged between the inner sleeve (311) and the outer sleeve (111); A valve plate assembly is arranged at a position of the inner sleeve (311) higher than the filter assembly, and when the impeller assembly on the central drive shaft assembly rotates clockwise, under the action of the first coupling portion, the switching transmission assembly drives the valve plate assembly to open to form a third filter channel and acts as an intermediate transmission force to drive the inner sleeve (311) and the outer sleeve (111) to rotate; And a one-way valve body assembly is arranged on the inner sleeve (311) near the lower part of the second mounting plate (613); when the one-way valve body assembly is opened, water passes through the filter assembly from bottom to top to complete backwashing.

2. A groundwater sampling pretreatment device according to claim 1, characterized in that: The central drive shaft assembly comprises an electric wire (512), and a motor (511) arranged at the bottom end of the electric wire (512); The output end of the motor (511) is provided with a bearing seat (712) and a main shaft (711) connected to the bearing seat (712); The first coupling portion comprises a second damping short strip (8111) arranged on the inner wall of the central cavity of the transmission ring (811), and a first damping short strip (713) arranged on the main shaft (711) at a position corresponding to the second damping short strip (8111), and the space between the second damping short strip (8111) and the first damping short strip (713) in the central cavity of the transmission ring (811) is filled with viscous hydraulic oil; The second coupling portion comprises a second damping strip (1013) arranged in an annular distribution on the inner wall of the long shaft sleeve (1012), and a first damping strip (714) arranged on the main shaft (711) at a position corresponding to the second damping strip (1013); the long shaft sleeve (1012) and the space between the second damping strip (1013) and the first damping strip (713) are filled with viscous hydraulic oil.

3. A groundwater sampling pretreatment device according to claim 1, characterized in that: The impeller assembly comprises a plurality of annularly distributed fan blades (911), wherein the fan blades (911) are disposed between the switching transmission assembly and the filter assembly, and when the fan blades (911) rotate clockwise, they are used to promote water to pass through the filter plate (1011) from top to bottom to complete multiple filtration, and when the fan blades (911) switch counterclockwise, they are used to drive the water to self-clean the filter plate (1011) from bottom to top.

4. A groundwater sampling pretreatment device according to claim 1, characterized in that: The one-way valve body assembly comprises a first notch (316) provided at the lower part of the inner sleeve (311), water inlet holes provided at both sides of the first notch (316), and a mounting portion (142) assembled with the inner side of the first notch (316), wherein the mounting portion (142) is provided with one-way valve plates (141) extending to both sides of the water inlet hole, respectively, for covering the water inlet hole on the inner side.

5. A groundwater sampling pretreatment device according to claim 1, characterized in that: The switching transmission assembly comprises a transmission ring (811) and two sets of locking tongue mechanisms arranged opposite to each other on the transmission ring (811), and locking grooves (3111) are provided on the inner wall of the inner sleeve (311) at positions corresponding to the two sets of locking tongue mechanisms; Each group of the locking bolt mechanisms comprises a transmission member (813) and a mounting member (814) arranged on a transmission ring (811); the transmission member (813) is in an "L" shape and its corner position is rotatably mounted on the transmission ring (811) via a pin shaft; the mounting member (814) is in an "L" shape and a spring sheet (815) is arranged on its inner side; a centrifugal block (812) is arranged at the end of the side wall of the transmission member (813) close to the mounting member (814); the transmission member (813) where the centrifugal block (812) is located is The side wall of the member (813) can abut against the spring sheet (815), and a lock tongue (816) is inserted through the transmission ring (811) and can be telescopically moved. A lock head (817) is arranged at one end of the lock tongue (816) close to the lock slot (3111), and a limiting column (8161) is arranged at one end of the lock tongue (816) away from the lock slot (3111). A second limiting groove (8131) fixed at the end of the transmission member (813) can be limited and moved inside the limiting column (8161).

6. A groundwater sampling pretreatment device according to claim 5, characterized in that: The valve plate assembly comprises a through groove (318) formed on the inner sleeve (311), a valve plate body (317) which can be opened and closed is installed in the through groove (318) via a long pin shaft (3172), and a transmission bar (3171) which is fixed to the top of the valve plate body (317) and can rotate relative to the long pin shaft (3172); a mounting groove (3174) is formed on the outer wall of the transmission ring (811), one end of the transmission bar (3171) away from the long pin shaft (3172) extends into the mounting groove (3174) and is provided with a first limiting groove (3173), and a limiting rod which is vertically installed in the mounting groove (3174), and the limiting rod can slide in a limited manner in the mounting groove (3174).

7. A groundwater sampling pretreatment device according to claim 1, characterized in that: The filter disc assembly comprises a long shaft sleeve (1012) and a plurality of filter discs (1011) distributed in an annular manner on the outer wall of the long shaft sleeve (1012); the filter discs (1011) are curved elastic net structures.

8. A groundwater sampling pretreatment device according to claim 1, characterized in that: The outer sleeve (111) and the inner sleeve (311) are integrally formed, and the inner sleeve (311) is further provided with an upper valve plate structure and a lower valve plate structure; the upper valve plate structure comprises a first mounting plate (313) fixed to the inner wall of the upper portion of the inner sleeve (311), the first mounting plate (313) divides the upper portion of the inner sleeve (311) into a sewage discharge chamber, and the first mounting plate (313) is provided with an annularly distributed drainage hole, and a first one-way valve plate (312) covering the drainage hole and located on the upper surface of the first mounting plate (313), and a mounting hole is provided in the middle of the first mounting plate (313), and the mounting hole is used for the rotational assembly of the bearing seat (712); The lower valve plate structure comprises a second mounting plate (613) fixed to the inner wall of the lower portion of the inner sleeve (311); the second mounting plate (613) divides the lower portion of the inner sleeve (311) into a water collecting chamber (611) for receiving filtered clean water; the second mounting plate (613) is provided with annular distribution through holes (614) and a second one-way valve plate (612) covering the through holes (614) and located below the second mounting plate (613).

9. A groundwater sampling pretreatment device according to claim 8, characterized in that: A second notch (12) is provided on the inner wall of the water collecting chamber (611) below the second mounting plate (613), and a pressure valve assembly is provided in the second notch (12); The pressure valve assembly comprises a valve sleeve (1211), and a valve cavity (1215) opened in the valve sleeve (1211); the valve cavity (1215) forms a first step portion and a second step portion at the inlet and outlet ends of the valve sleeve (1211), respectively; a valve body (1213) is provided at the inlet end of the first step portion; the valve body (1213) can be telescopically movable relative to the inlet end and is provided with a third step portion inside the first step portion; the diameter of the third step portion is smaller than the diameter of the valve cavity (1215); and a spring (1214) is provided between the third step portion and the second step portion, and is used to discharge the air inside the water collecting chamber (611) first and then discharge the filtered clean water when the internal pressure of the water collecting chamber (611) increases.

10. A groundwater sampling pretreatment device according to claim 1, characterized in that: The first filter plate assembly comprises a long groove which is arranged in an annular distribution on the circumference of the outer sleeve (111), and a plurality of groups of bearing portions (112) which are arranged on the outer wall of the outer sleeve (111) at positions corresponding to the long grooves, each group of the bearing portions (112) being rotatably mounted with a first filter plate (211) via a pin, the first filter plate (211) being provided with a filtering area (212) corresponding to the long groove area, and an extension portion (213) which is arranged on a side of the first filter plate (211) away from the bearing portion (112) thereof, the extension portion (213) being in a triangular shape; When the outer jacket (111) drives the first filter plate (211) to rotate clockwise as a whole, under the action of the extension portion (213), the first filter plate (211) is closely attached to the outer jacket (111) to form a first filtering structure, and water flows from the outer side of the outer jacket (111) through the filtering area (212) to enter the inner side thereof; when the outer jacket (111) drives the first filter plate (211) to rotate counterclockwise as a whole, under the action of the extension portion (213), the water flows through the cross section of the extension portion (213) and is forced to open, and the water flows from the inner side of the filtering area (212) to the outer side, thereby achieving self-cleaning of the filtering area (212); The second filter plate assembly comprises a plurality of second filter plates (411) fixed to the outer wall of the inner sleeve (311); the filtering direction of the plurality of second filter plates (411) is clockwise; when the inner sleeve (311) drives the second filter plates (411) to rotate clockwise, water entering the first filter plate assembly can be filtered twice; and when the inner sleeve (311) drives the second filter plates (411) to rotate counterclockwise, the water flow can self-clean the filter plates.

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