A filter material component for filling a groundwater environment monitoring well

Abstract

The utility model provides a filter material filling component for groundwater environment monitoring wells, including an inner filter element and an outer filter element, and at least one filter element is a jacket structure and filled with filter material. Among them, the inner filter element and the outer filter element are both cylindrical structures, and the inner filter element is located in the outer filter element. The outer filter element is a split structure, and a sliding mechanism is also provided between the inner filter element and the outer filter element, and the slide groove of the sliding mechanism is an oblique straight line or arc structure. The device of the utility model has a simple structure and low cost. The two-layer component structure realizes a deformable combination design of the inner and outer filter elements, and has the ability to adaptively deform and unfold during the removal of the casing, so that the net and filler can be hung outside the well, which is beneficial to protect the filter screen, control the amount of filter material used, and make the operation more standardized; at the same time, the overall deployment does not require too many installation operations in the well, and can also reduce the impact on the space or other components in the well, which is beneficial to fix the well pipe.

Description

Technical Field

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

[0002] In recent years, all regions have been vigorously promoting the construction of groundwater environment monitoring systems and committed to improving the groundwater environment monitoring network. With the acceleration of this process, the number of groundwater environment monitoring wells has shown a sharp increase. However, in this process, whether groundwater environment monitoring wells can be built quickly and in a standardized manner has gradually become a technical problem that has attracted much attention.

[0003] Among them, in the current well construction process, the problems are as follows:

[0004] First of all, the operation of wrapping the filter screen outside the conventional water filter pipe faces the problem of the filter screen falling off. Specifically, due to the complexity of the process and the characteristics of the material, it is often difficult to wrap the filter screen to the ideal tightness. In the process of pulling the casing, the filter screen is very likely to fall off due to the action of various external forces. The seriousness of this problem cannot be ignored. For example: if the filter screen falls off, external mud, impurities and other substances can easily enter the interior of the water filter pipe, which will seriously interfere with the subsequent groundwater collection and monitoring work, resulting in a significant reduction in the accuracy of the monitoring data.

[0005] Secondly, the control of the amount and depth of filter media filling has always been a difficult technical problem to deal with. Among them, the precise control of the amount of filter media filling requires comprehensive consideration of multiple factors, such as the characteristics of the aquifer, the design requirements of the well, etc. However, in actual operation, due to the lack of precise metering equipment and effective monitoring methods, it is often difficult to achieve accurate control of the filling amount. Similarly, the determination of the filling depth of the filter media is also faced with many uncertainties. Insufficient or excessive depth may not effectively play the filtering role of the filter media, thereby affecting the purification effect of groundwater and the accuracy of monitoring. For example, in some areas with complex geological conditions, if the filling depth of the filter media is inappropriate, the groundwater may not be fully filtered during the rising process, resulting in deviations in the monitored water quality parameters and failure to truly reflect the actual quality of the groundwater.

[0006] Furthermore, the loose fixation of the well pipe is another common problem in traditional well construction methods. In particular, after the casing is removed, the well pipe is prone to displacement. This phenomenon not only changes the structure and spatial position of the well, but may also destroy the original equilibrium state in the well. For example, the displacement of the well pipe may cause the contact area between the aquifer and the well pipe to change, thereby affecting the inflow and flow rate of groundwater, and ultimately interfering with the stability and reliability of the monitoring results. In addition, the deviated well pipe may also increase the risk of well wall collapse, further threatening the service life of the monitoring well and the continuity of the monitoring data.

[0007] In summary, it is still necessary to improve the existing filter material containing structural components or members in order to solve the problems of fast, standardized and accurate hanging of the net, filling, fixing of well pipes and the like. Utility Model Content

[0008] The utility model aims at the problems existing in the prior art and provides a PVC wellbore external filter material filling component for a groundwater environment monitoring well, which solves the above problems by optimizing the overall structural design.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0010] A filter material filling component for groundwater environment monitoring wells, which mainly comprises an inner filter element and an outer filter element, and at least one filter element is a jacket structure and is filled with filter material;

[0011] The inner filter element and the outer filter element are both cylindrical in structure, and the inner filter element is located in the outer filter element;

[0012] The inner filter element and the outer filter element are provided with transverse fluid passages on their circumferential sides and are equipped with filtering structures;

[0013] The outer filter element is a split structure, and a sliding mechanism is provided between the inner filter element and the outer filter element;

[0014] The sliding mechanism is provided with a sliding pin and a sliding groove, and the sliding pin is slidably connected with the sliding groove; the sliding groove is an oblique straight line or arc line structure.

[0015] Further, the component includes a stowed state and an unfolded state;

[0016] When the component is in the storage state: the sliding pin is located at the initial position of the sliding groove, and the outer filter element is in the combined state, the inner filter element is axially misaligned and nested in the outer filter element; the inner filter element and the outer filter element are in clearance fit;

[0017] When the component is in the expanded state: the sliding pin is located at the end position of the slide groove; and the outer filter element is in a separated state, the inner filter element is axially aligned and located in the middle of the outer filter element; there is a spacing between the inner filter element and the outer filter element.

[0018] Furthermore, the inner filter element is also a split structure, including two inner semicircular tubes;

[0019] The two lateral ends of the inner semicircular tube are respectively provided with inner fixed baffles;

[0020] The inner semicircular tube body is a jacket structure, and a double-layer arc filter is arranged between the two inner fixed baffles.

[0021] Furthermore, an I-shaped frame is axially arranged in the middle of the circumferential side surface of the inner semicircular tube body;

[0022] The I-shaped frame is respectively connected to the arc-shaped filter screens on both sides.

[0023] Furthermore, a fastener is provided on the inner fixed baffle plate for merging the two inner semicircular tubes.

[0024] Furthermore, the outer filter element comprises two outer semicircular tubes;

[0025] The two lateral ends of the outer semicircular tube are respectively provided with outer fixed baffles;

[0026] The outer semicircular tube body is a jacket structure, and a double-layer arc filter is arranged between the two outer fixed baffles.

[0027] Furthermore, an I-shaped frame is axially arranged in the middle of the peripheral side surface of the outer semicircular tube body;

[0028] The I-shaped frame is respectively connected to the arc-shaped filter screens on both sides.

[0029] Furthermore, the sliding pins are provided on the split structures of the outer filter element, and the sliding grooves are correspondingly provided on the inner filter element.

[0030] Furthermore, the slide groove is an arc-shaped structure;

[0031] The initial position of the slide slot is located obliquely above the end position.

[0032] Furthermore, the filter material is quartz sand.

[0033] Compared with the prior art, the utility model has the following beneficial effects:

[0034] The utility model discloses a device with simple structure and low cost, and realizes the deformable combination design of inner and outer filter elements through the two-layer component structure, combined with the split-design outer filter element and the sliding mechanism, and has the ability of adaptively deforming and expanding when the casing is removed, so that the net and filler can be hung outside the well, which is beneficial to protecting the filter screen, controlling the amount of filter material used, and making the operation more standardized; at the same time, the overall deployment does not require too many installation operations in the well, and can also reduce the impact on the space or other components in the well, which is beneficial to fix the well pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 It is a three-dimensional diagram of the storage state in a specific embodiment of the utility model;

[0037] Figure 2 It is a three-dimensional diagram of the unfolded state in a specific embodiment of the utility model;

[0038] Figure 3 This is a three-dimensional diagram of the inner semicircular tube body in a specific embodiment of the utility model;

[0039] Figure 4 This is a three-dimensional diagram of the outer semicircular tube body in a specific embodiment of the utility model;

[0040] Figure 5 This is a schematic diagram of the installation position of the rear component of the casing in the specific embodiment of the utility model;

[0041] Figure 6 It is a schematic diagram of the component installation position after the sleeve is pulled out in a specific embodiment of the utility model.

[0042] In the figure: 1, inner filter element, 2, outer filter element, 3, stainless steel filter screen, 4, well pipe, 5, sedimentation port, 6, sedimentation tank, 7, casing, 101, inner fixed baffle, 102, first I-shaped frame, 103, open circular slide groove, 104, outer convex cylinder, 105, slide groove, 106, first clamping cavity, 201, outer fixed baffle, 202, second I-shaped frame, 203, sliding pin, 204, second clamping cavity. DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] The utility model provides a Figure 1 and Figure 2 The groundwater environment monitoring well filling filter material component shown mainly includes an inner filter element 1 and an outer filter element 2.

[0049] The inner filter element 1 and the outer filter element 2 are both cylindrical structures, and the inner filter element 1 is located in the outer filter element 2 .

[0050] Preferably, the inner filter element 1 is a split structure, which is formed by splicing two inner semicircular tubes into a cylindrical tube structure; a single inner semicircular tube such as Figure 3 As shown. Specifically, an inner fixed baffle 101 is provided at each of the two lateral ends of the inner semicircular tube body, and the longitudinal direction thereof is a long strip-shaped groove-shaped structure, and the cross-sectional shape is approximately a C-shaped structure, that is, arc-shaped folded edges in the same direction are provided on both sides of the lateral straight line portion, and the bending direction of the folded edges is kept consistent. In each inner semicircular tube body, the area between the two inner fixed baffles 101 is left empty as a lateral fluid passage, and a filtering structure is provided, which can be specifically a stainless steel filter screen 3 commonly used for hanging nets, and is processed into an arc shape (circumferential side of the cylinder), and a double-layer structure is adopted. A first clamping cavity 106 is formed between the double-layer arc-shaped filter screens, and a jacket structure is formed with the lower bottom plate, which can be used to fill filter material, and quartz sand is selected in this embodiment.

[0051] Furthermore, in order to make the structure more stable, a vertically installed first I-shaped frame 102 is also set in the middle of the inner semicircular tube body, and the inner and outer surfaces are processed into arc surfaces, and the curvature is the same as the arc-shaped folded edge of the inner fixed baffle 101. As a result, the four convex edges of the first I-shaped frame 102 are respectively fixed to the corresponding arc-shaped filter screens on both sides, thereby enhancing the stability of the overall structure and increasing the installation strength of the filter screen to prevent it from falling off. Furthermore, in order to facilitate the assembly of the inner filter element 1, it is designed to process fasteners on the inner fixed baffle 101 to achieve detachable assembly; specifically, the two inner fixed baffles 101 of a single inner semicircular tube body are respectively installed with an open circular slide groove 103 and an outer convex cylinder 104. When two identical inner semicircular tubes need to be spliced, the respective outer convex cylinders 104 are respectively inserted from the top or bottom into the open circular slide groove 103 on the opposite side, and then slid until they are aligned.

[0052] The outer filter element 2 is also a split structure, which is composed of two outer semicircular tubes spliced ​​together to form a cylindrical tube structure; a single outer semicircular tube is as follows Figure 4 As shown. Specifically, an outer fixed baffle 201 is provided at each of the two lateral ends of the inner semicircular tube body, and the longitudinal direction thereof is a long strip-shaped groove-shaped structure, and the cross-sectional shape is approximately a C-shaped structure, that is, arc-shaped folding edges in the same direction are provided on both sides of the lateral straight line portion, and the bending direction of the folding edges is kept consistent. In each outer semicircular tube body, the area between the two outer fixed baffles 201 is also left empty as a lateral fluid passage, and a filtering structure is provided, which can be specifically a stainless steel filter screen 3 commonly used for hanging nets, and is processed into an arc shape (circumferential side of the cylinder), and a double-layer structure is adopted. A second sandwich cavity 204 is formed between the double-layer arc-shaped filter screens, and a jacket structure is formed with the lower bottom plate, which can be used to fill filter material, and quartz sand is selected in this embodiment.

[0053] Furthermore, in order to make the structure more stable, a second I-shaped frame 202 is vertically installed in the middle of the outer semicircular tube, and the inner and outer surfaces are processed into arc surfaces, and the curvatures are respectively the same as the arc-shaped folded edges of the outer fixed baffle 201. Thus, the four convex edges of the second I-shaped frame 202 are respectively fixed to the corresponding arc-shaped filter screens on both sides, thereby enhancing the stability of the overall structure and increasing the installation strength of the filter screen to prevent it from falling off.

[0054] A sliding mechanism is also provided between the inner filter element 1 and the outer filter element 2. Figure 3 and Figure 4 As shown, the sliding mechanism is provided with a sliding pin 203 and a sliding groove 105 , and the sliding pin 203 is slidably connected with the sliding groove 105 .

[0055] Specifically, the outer side surfaces of the two inner fixed baffles 101 of the single inner semicircular tube of the inner filter element 1 are respectively processed with a slide groove 105, the slide groove 105 is an arc-shaped structure, the upper end is used as the initial position of the single slide groove, and is processed with an opening and connected to the side. The end position of the slide groove 105 is the limit position, and the bending protrusion direction of the single slide groove 105 is obliquely upward, so that the initial position of the slide groove 105 is located obliquely above the end position.

[0056] Sliding pins 203 are respectively installed on the inner side surfaces of the two outer fixed baffles 201 of the single outer semicircular tube of the outer filter element 2.

[0057] Assembly method: first prepare two outer semicircular tubes and two inner semicircular tubes, slide the sliding pins 203 of the outer semicircular tubes from the initial positions of the corresponding sliding grooves 105 into the grooves; then splice the two inner semicircular tubes with fasteners.

[0058] Therefore, the components of this embodiment have a stowed state and an unfolded state according to the well construction steps, as follows:

[0059] like Figure 1 and Figure 5 As shown, the component is in the storage state when it is placed in the well. When it is in the storage state: the sliding pin 203 is located at the initial position of the sliding groove 105, and the outer filter element 2 is in the combined state, and the inner filter element 1 is axially misaligned and nested in the outer filter element 2. At this time, the inner filter element 1 and the outer filter element 2 are clearance-matched, and the overall radial size is small, so that it is embedded in the casing 7 and sleeved on the well pipe 4.

[0060] like Figure 2 and Figure 6 As shown, after the sleeve 7 is pulled out, the components are in an expanded state under the action of gravity. In the expanded state: the slide pins 203 slide along their respective slide grooves to the end positions of the slide grooves, and the outer filter element 2 is in a separated state, and the inner filter element 1 is axially aligned and located in the middle of the outer filter element 2. At this time, there is a spacing between the inner filter element 1 and the outer filter element 2, the radial dimension is expanded, and the space left in the middle allows the sedimentation port 5 of the sedimentation tank 6 below to be exposed.

[0061] 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 filter material component for filling a groundwater environment monitoring well, characterized in that: It comprises an inner filter element and an outer filter element, and at least one filter element is a jacket structure and is filled with filter material; The inner filter element and the outer filter element are both cylindrical in structure, and the inner filter element is located in the outer filter element; The inner filter element and the outer filter element are provided with transverse fluid passages on their circumferential sides and are equipped with filtering structures; The outer filter element is a split structure, and a sliding mechanism is provided between the inner filter element and the outer filter element; The sliding mechanism is provided with a sliding pin and a sliding groove, and the sliding pin is slidably connected with the sliding groove; the sliding groove is an oblique straight line or arc line structure.

2. The filter material filling component for groundwater environment monitoring well according to claim 1, characterized in that: The component includes a stowed state and an unfolded state; When the component is in the storage state: the sliding pin is located at the initial position of the sliding groove, and the outer filter element is in the combined state, the inner filter element is axially misaligned and nested in the outer filter element; the inner filter element and the outer filter element are in clearance fit; When the component is in the expanded state: the sliding pin is located at the end position of the slide groove; and the outer filter element is in a separated state, the inner filter element is axially aligned and located in the middle of the outer filter element; there is a spacing between the inner filter element and the outer filter element.

3. The filter material filling component for groundwater environment monitoring well according to claim 1, characterized in that: The inner filter element is also a split structure, including two inner semicircular tubes; The two lateral ends of the inner semicircular tube are respectively provided with inner fixed baffles; The inner semicircular tube body is a jacket structure, and a double-layer arc filter is arranged between the two inner fixed baffles.

4. The filter material filling component for groundwater environment monitoring well according to claim 3, characterized in that: The middle part of the circumferential side surface of the inner semicircular tube body is also provided with an axially arranged I-shaped frame; The I-shaped frame is respectively connected to the arc-shaped filter screens on both sides.

5. The filter material filling component for groundwater environment monitoring well according to claim 3 or 4, characterized in that: The inner fixed baffle is provided with a fastener for merging the two inner semicircular tubes.

6. The filter material filling component for groundwater environment monitoring well according to claim 1, characterized in that: The outer filter element comprises two outer semicircular tubes; The two lateral ends of the outer semicircular tube are respectively provided with outer fixed baffles; The outer semicircular tube body is a jacket structure, and a double-layer arc filter is arranged between the two outer fixed baffles.

7. The filter material filling component for groundwater environment monitoring well according to claim 6, characterized in that: The middle part of the peripheral side surface of the outer semicircular tube body is also provided with an axially arranged I-shaped frame; The I-shaped frame is respectively connected to the arc-shaped filter screens on both sides.

8. The filter material filling component for groundwater environment monitoring well according to claim 1, characterized in that: The sliding pins are arranged on the split structure of the outer filter element, and the sliding grooves are arranged correspondingly on the inner filter element.

9. The filter material filling component for groundwater environment monitoring well according to claim 8, characterized in that: The slide groove is an arc-shaped structure; The initial position of the slide slot is located obliquely above the end position.

10. The filter material filling component for groundwater environment monitoring well according to claim 1, characterized in that: The filter material is quartz sand.

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