A water filter pipe structure for groundwater environment monitoring well

Abstract

The utility model provides a water filter pipe structure for a groundwater environment monitoring well, including an inner pipe body and an outer pipe body. The inner pipe body is coaxially nested with the outer pipe body, and a switching port is circumferentially provided on the inner pipe body, and a corresponding incision is provided on the outer pipe body. A convex portion is provided on the side of the switching port, and the convex portion is inserted into the incision and slidably connected with the incision. The inner pipe body or the outer pipe body is connected to an external driving device. The utility model has a simple structure and low cost. By designing a double-layer water filter pipe structure, the wellbore is switched on and off through relative rotation of the two layers, the connection between the groundwater aquifer and the outside world is cut off, and the risk of pollution is reduced; the inner pipe body is provided with a convex portion, and the silt in the incision of the outer pipe body can be cleaned during the relative rotation process, which can effectively prevent the accumulation of silt in the well pipe, automatically complete the dredging work, and reduce the workload of manpower.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment, and in particular relates to a water filter pipe structure for a groundwater environment monitoring well. Background Art

[0002] In recent years, various regions have been promoting the construction of groundwater environmental monitoring systems and improving groundwater environmental monitoring networks. However, as the number of groundwater environmental monitoring wells has increased dramatically, some problems have gradually been exposed in groundwater environmental monitoring wells, which have affected their normal operation. Among them, the most common problem is the scrapping of monitoring wells due to pipeline blockage.

[0003] Therefore, whether the groundwater environment monitoring wells can operate stably and for a long time has become one of the main technical problems faced at this stage. At present, the main improvement method is to add filtering devices to avoid pipeline blockage. However, the traditional filtering devices will still have the problem of filtering devices being blocked after a long period of operation. For example, the filter pipes often configured in the monitoring wells may be blocked by silt. If not handled in time, it will cause problems such as siltation in the well pipe, which will affect the groundwater environment monitoring results and even cause the monitoring wells to be scrapped; at the same time, under normal working conditions, the existing filtering devices will also cause the groundwater environment monitoring wells to directly connect the groundwater aquifer to the outside world, resulting in external pollutants entering the groundwater aquifer channel, increasing the risk of groundwater pollution.

[0004] In the face of the above problems, the existing solution is that personnel regularly carry out dredging, mainly by removing, cleaning / replacing, and reinstalling the filter device, and adding a switch component to achieve the function of closing the waterway during non-sampling time. Although this technical solution can solve the above problems, it wastes manpower and increases the overall cost. During the maintenance period, the entire monitoring well is in a long-term shutdown state, which is not conducive to monitoring work.

[0005] In summary, the existing filtration equipment needs to be improved in order to achieve the goal of long-term stable operation of the monitoring well, effectively reduce manpower, and have the ability to control switches. Utility Model Content

[0006] The utility model aims at the problems existing in the prior art and provides a water filter pipe structure for a groundwater environment monitoring well, which solves the above problems by optimizing the overall structural design.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] A water filter pipe structure for a groundwater environment monitoring well, which mainly comprises an inner pipe body and an outer pipe body; the inner pipe body and the outer pipe body are coaxially nested;

[0009] The inner tube body is provided with at least one switching opening along the circumferential direction, and the outer tube body is provided with a corresponding incision; the switching opening is connected to the inner and outer sides of the inner tube body; the incision is connected to the inner and outer sides of the outer tube body;

[0010] The circumferential length of the switching opening is smaller than the circumferential length of the incision, and the axial height of the switching opening is smaller than or equal to the axial height of the incision;

[0011] A convex portion is provided on the side of the switching port; the convex portion is inserted into the cutout and is slidably connected with the cutout;

[0012] The inner tube body or the outer tube body is connected to a driving device of an external device.

[0013] Furthermore, the inner tube body has a plurality of switching openings arranged in an array along the circumferential side surface, and the outer tube body has a plurality of the incisions arranged in a corresponding array.

[0014] Furthermore, the inner tube body is provided with multiple layers of the switching openings, and each layer has multiple switching openings evenly distributed along the circumferential direction.

[0015] Furthermore, the switch openings of two adjacent layers are aligned or staggered along the axial direction.

[0016] Furthermore, the convex portion is a fan-ring structure;

[0017] The length of the protrusion along the radial direction is less than or equal to the wall thickness of the outer tube body.

[0018] Furthermore, the convex portion is detachably connected to the inner tube body;

[0019] The protrusion is fixed by means of a latch or a bolt.

[0020] Furthermore, the root of the protrusion is inserted into the inner side of the switching port;

[0021] The end surface of the inner tube body is provided with a first through hole, and the root of the convex portion is correspondingly provided with a second through hole;

[0022] A bolt is installed in the first through hole, and the bolt passes through the second through hole in the axial direction.

[0023] Furthermore, the outer tube body is a split structure, with a fixing component provided laterally;

[0024] The fixing assembly includes a fastener for fixing the outer tube body.

[0025] Furthermore, the inner tube body and the outer tube body are clearance-matched.

[0026] Furthermore, the incision is a square opening, and the switching opening is also a square opening.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] The utility model discloses the device has a simple structure and low cost, and through the design of a double-layer water filter pipe structure, the wellbore is opened and closed by relative rotation of the two layers, thereby cutting off the connection between the groundwater aquifer and the outside world and reducing the risk of pollution; the inner pipe body is provided with a convex portion, which can also clean the silt in the cutout of the outer pipe body during the relative rotation process, thereby effectively preventing the accumulation of silt in the well pipe, automatically completing the dredging work and reducing the workload of manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 It is a stereogram of a specific embodiment of the utility model;

[0031] Figure 2 This is a three-dimensional diagram of the inner tube body in a specific embodiment of the utility model;

[0032] Figure 3 This is a three-dimensional diagram of the outer tube body in a specific embodiment of the utility model;

[0033] Figure 4 It is a cross-sectional schematic diagram of a closed state in a specific embodiment of the utility model;

[0034] Figure 5 It is a cross-sectional schematic diagram of an open state in a specific embodiment of the utility model.

[0035] In the figure: 1, inner tube body, 2, outer tube body, 101, inner tube wall, 102, convex part, 103, switching port, 201, outer tube wall, 202, incision. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it is necessary to understand that the relative relationships indicated by the terms "upper" and "lower" are based on the upper and lower relationships corresponding to the device when it is in the installation position in actual application. They are 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. Therefore, they cannot be understood as limitations on the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] It should be noted that the methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.

[0041] The utility model provides a Figure 1 The water filter pipe structure of the groundwater environment monitoring well shown mainly includes an inner pipe body 1 and an outer pipe body 2, and the inner pipe body 1 is coaxially nested with the outer pipe body 2. Since the two pipe bodies need to rotate relative to each other, the inner pipe body 1 and the outer pipe body 2 are designed to be clearance-matched in this embodiment, and the inner pipe body 1 is connected to an external drive device. The drive device can be a stepper motor or a reciprocating motion mechanism composed of a servo and a multi-link structure, thereby driving the inner pipe body 1 to reciprocate.

[0042] like Figure 2 As shown, a switching port 103 is provided on the inner tube wall 101 along the circumferential direction. The switching port 103 is a square opening structure, which passes through the tube wall horizontally and connects the inner and outer sides of the inner tube body 1. In order to reduce the fluid flow resistance and increase the overall flow rate, the switching ports 103 are arranged in an array distributed on the circumferential side of the inner tube wall 101. The array is a multi-layer design along the axial direction, and each layer has five switching ports 103. In a specific embodiment, it can be considered to increase the fluid filtering effect, and the switching ports 103 of two adjacent layers are designed to be staggered in the up-down direction (along the axial direction). In this embodiment, the switching ports 103 are designed to be staggered in the up-down direction (along the axial direction) in order to reduce the processing complexity. Figure 2 As shown, the switch ports 103 of two adjacent layers are designed to be aligned, and thus are divided into five groups along the circumferential direction.

[0043] Each switching port 103 has a convex portion 102 on its side. Figure 2 As shown, the protrusion 2 of this embodiment is a fan-ring structure.

[0044] Correspondingly, such as Figure 3 As shown, five groups of transverse through cutouts 202 are correspondingly provided on the outer tube wall 201, which are used to connect the inner and outer sides of the outer tube wall 201. Each switching port 103 corresponds to a cutout 202. The cutout 202 is also a square opening.

[0045] The circumferential length of the switching opening 103 is less than the circumferential length of the cutout 202, and the axial height of the switching opening 103 is less than or equal to the axial height of the cutout 202. Preferably, in this embodiment, the circumferential length of the cutout 202 (the length of the arc outside the opening) is twice the circumferential length of the switching opening 103 (ignoring the change in arc length caused by the radius difference), and the circumferential length of the convex portion 102 is designed to be equal to the circumferential length of the switching opening 103.

[0046] like Figure 4 As shown, each convex portion 102 is inserted into the corresponding notch 202 and slidably connected with the notch 202. The radial length of the convex portion 102 is designed to be less than or equal to the wall thickness of the outer tube wall 201, thereby ensuring that the convex portion 2 does not protrude from the peripheral side of the outer tube body 2.

[0047] Preferably, considering the assembly problem of the water filter pipe, a corresponding detachable structure is required. Therefore, in one embodiment, the outer tube body 2 is designed to be a split structure, composed of multiple combinable structures, such as a multi-petal structure that is rotationally symmetrical around the axis of the tube body, and a fixing component is designed on the side, such as a welded or glued flange, and bolt holes are processed on the flange, and the two flanges are aligned and fixed by bolts. In this design, the outer tube body 2 can be assembled on the processed inner tube body 1 to complete the assembly.

[0048] Preferably, in another embodiment, considering the strength of the tube body, the convex portion 102 is designed to be detachably connected to the inner tube wall 101. Specifically, the convex portion 102 is also a fan ring structure, but the switching port 103 is widened, and the root of the convex portion 102 is inserted into the inner side of the switching port 103. The upper end surface of the inner tube wall 101 is provided with five first through holes that pass through from top to bottom, corresponding to the positions of each group of convex portions 102, and a second through hole is processed correspondingly at the root of the convex portion 102. In the specific assembly process, the bolts are selected as long bolts, which are inserted from the first through holes, and passed downward through the second through holes of the convex portions 102 in each group in turn to complete the fixation. This design allows the inner tube wall 101 to be embedded in the outer tube wall 201. After aligning the positions, the convex portions 102 are respectively inserted into the switching port 103, and then the long bolts are inserted from the upper first through holes to fix them. Furthermore, in order to facilitate assembly, the long bolt is only processed with external threads at the end, with an optical axis design in the middle, and a hexagonal sink is processed correspondingly on the lower end surface of the inner tube wall 101. The nut is placed in it, and the long bolt can be tightened by turning the upper part.

[0049] It should also be noted that in different embodiments, according to the needs of the scene, one end of the inner tube body can be closed, one end of the outer tube body can be closed, or neither end can be closed.

[0050] Working principle:

[0051] Combination Figure 4 As shown, when installing the filter pipe during the construction of the groundwater environment monitoring well, the gear position is adjusted to the closed state, that is, the driving device rotates the inner layer pipe body 1 so that each switching port 103 is staggered from the cutout 202, so that the inside and outside of the whole pipe are not connected. After the installation is completed, the gear position is adjusted to the open state, and the well is washed according to relevant requirements; when the groundwater environment monitoring well does not need sampling, the gear position is adjusted to the closed state to cut off the connection between the groundwater aquifer and the outside world, preventing external pollutants from directly contaminating the groundwater; at the same time, it prevents sediment precipitation from clogging the filter pipe, thereby extending the service life of the groundwater monitoring well.

[0052] Combination Figure 5 As shown, when the groundwater environment monitoring well needs to be sampled, the water in the wellbore is first taken out with a sampler, and then the gear is adjusted to the open state, that is, the driving device rotates the inner tube body 1 in the direction of the arrow, so that each switching port 103 is aligned with the corresponding cutout 202, so that the inside and outside of the whole tube are connected and enter the open state; the filtering work is completed through these tiny gaps, and the normal transportation of the fluid is guaranteed (there are two transportation directions, such as Figure 5 As shown by the wavy arrow in the figure, the specific design is based on actual needs). After that, groundwater samples are collected according to relevant requirements.

[0053] The inner tube body 1 is driven to reciprocate by the driving device, and the convex portion 102 can push out the silt in the incision 202, thereby completing the dredging work, which can be performed separately according to needs.

[0054] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A water filter pipe structure for a groundwater environment monitoring well, characterized in that: It comprises an inner tube body and an outer tube body; the inner tube body and the outer tube body are coaxially nested; The inner tube body is provided with at least one switching opening along the circumferential direction, and the outer tube body is provided with a corresponding incision; the switching opening is connected to the inner and outer sides of the inner tube body; the incision is connected to the inner and outer sides of the outer tube body; The circumferential length of the switching opening is smaller than the circumferential length of the incision, and the axial height of the switching opening is smaller than or equal to the axial height of the incision; A convex portion is provided on the side of the switching port; the convex portion is inserted into the cutout and is slidably connected with the cutout; The inner tube body or the outer tube body is connected to a driving device of an external device.

2. The underground water environment monitoring well water filter pipe structure according to claim 1, characterized in that: The inner tube body has a plurality of switching openings arranged in an array along the circumferential side surface, and the outer tube body has a plurality of incisions arranged in a corresponding array.

3. The water filter pipe structure for groundwater environment monitoring well according to claim 1 or 2, characterized in that: The inner tube body is provided with multiple layers of the switching openings, and each layer has multiple switching openings evenly distributed along the circumferential direction.

4. The water filter pipe structure for groundwater environment monitoring well according to claim 3 is characterized in that: The switching ports of two adjacent layers are aligned or staggered along the axial direction.

5. The water filter pipe structure for groundwater environment monitoring well according to claim 1, characterized in that: The convex portion is a fan ring structure; The length of the protrusion along the radial direction is less than or equal to the wall thickness of the outer tube body.

6. The water filter pipe structure for groundwater environment monitoring well according to claim 1, characterized in that: The convex portion is detachably connected to the inner tube body; The protrusion is fixed by means of a latch or a bolt.

7. The water filter pipe structure for groundwater environment monitoring well according to claim 6, characterized in that: The root of the protrusion is inserted into the inner side of the switching port; The end surface of the inner tube body is provided with a first through hole, and the root of the convex portion is correspondingly provided with a second through hole; A bolt is installed in the first through hole, and the bolt passes through the second through hole in the axial direction.

8. The water filter pipe structure for groundwater environment monitoring well according to claim 1, characterized in that: The outer tube body is a split structure, with a fixing component provided laterally; The fixing assembly includes a fastener for fixing the outer tube body.

9. The water filter pipe structure for groundwater environment monitoring well according to claim 1, characterized in that: The inner tube body and the outer tube body are clearance-matched.

10. The water filter pipe structure for groundwater environment monitoring well according to claim 1, characterized in that: The incision is a square opening, and the switching opening is also a square opening.

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