Protection assembly of electric heating element for soil in-situ thermal desorption

Abstract

The utility model belongs to the technical field of electric heating element protection, and particularly relates to a protection assembly of an electric heating element for soil in-situ thermal desorption, which comprises a protection shell, a placement groove is formed in the protection shell, an insertion groove is formed in the upper surface in the placement groove, a through groove is formed in the upper surface in the insertion groove, and a through hole is formed in the lower surface of the insertion groove. A second protection pad is fixedly connected to the lower surface of the interior of the containing groove, a pressing plate is inserted into the inserting groove, and a fixing plate is fixedly connected into the containing groove. The electric heating rods can be protected through the protection shell, the first protection pad and the second protection pad, the multiple electric heating rods can be protected, meanwhile, the rotating ring is rotated to enable the moving assembly to work, the moving assembly works to drive the baffle to move, the pressing plate can be limited and separated from limiting through movement of the baffle, and therefore the electric heating rods can be protected. Therefore, the protection assembly can protect the electric heating rod conveniently, the electric heating rod can be taken and placed conveniently, and the protection assembly is high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of electric heating element protection technology, specifically a protective component for an electric heating element used for in-situ thermal desorption of soil. Background Technology

[0002] In-situ thermal desorption (TDR) involves introducing heat energy into the ground to heat the soil and groundwater, altering the saturated vapor pressure and solubility of target pollutants. This promotes the volatilization, dissolution, or degradation of the pollutants, which are then removed through soil vapor-phase extraction or multiphase extraction. TDR technology can be used to treat volatile and semi-volatile organic pollutants such as benzene compounds, petroleum hydrocarbons, halogenated hydrocarbons, polychlorinated biphenyls (PCBs), and dioxins in contaminated soil and groundwater. Due to its advantages, including eliminating the need for soil excavation and high pollutant removal efficiency, TDR technology has been increasingly widely used in contaminated site remediation in recent years.

[0003] With the acceleration of urbanization and the adjustment of urban land use functions, many polluting enterprises have relocated, leaving behind a large number of high-risk industrial pollution sites such as those for pesticides and chemicals. The soil in these sites urgently needs remediation. In-situ thermal desorption technology is a commonly used technique for soil remediation. During in-situ thermal desorption, electric heating rods are used as heating elements and inserted into the soil for remediation. Furthermore, protective components are required to protect the electric heating rods during transportation and storage.

[0004] Patent application CN117279130A discloses a protective cover for an electric heating element used in in-situ thermal desorption of soil. The cover includes a protective casing with caps screwed to its top and bottom; a first support base connected to the inside of the protective casing via a first connecting rod, with a first flexible sleeve bonded to its interior; a second support base connected to the inside of the protective casing via a second connecting rod, with a second flexible sleeve bonded to its interior; a pressure base located above the first support base, with a third flexible sleeve bonded to its interior; a telescopic mechanism installed inside the protective casing, comprising a fixed base, a spring, a telescopic column, an additional block, and a connecting block; and a limiting mechanism connected above the connecting block, comprising a stud, a movable block, and a threaded ring. This design provides protection for the heating element and facilitates its transportation and storage.

[0005] However, existing protective covers are inconvenient to protect multiple electric heating rods during use, and the operation is complicated and it is inconvenient to put the electric heating rods in and out. As a result, the protective cover is inconvenient to use and not practical enough. Therefore, in order to solve the above problems, a protective component for electric heating elements for in-situ thermal desorption of soil is proposed. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and solve the problems of existing protective covers being inconvenient to protect multiple electric heating rods during use, having complicated operation, and being inconvenient to remove and place electric heating rods, thus making the protective cover inconvenient to use and not practical enough, this utility model proposes a protective component for electric heating elements used in in-situ thermal desorption of soil.

[0007] The technical solution adopted by this utility model to solve its technical problem is: the protective component of the electric heating element for in-situ thermal desorption of soil according to this utility model includes a protective shell, a placement groove is provided inside the protective shell, a slot is provided on the upper surface inside the placement groove, and a through groove is provided on the upper surface inside the slot.

[0008] A second protective pad is fixedly connected to the lower surface inside the placement slot. A pressure plate is inserted into the slot. A fixing plate is fixedly connected to the placement slot. A plurality of through holes are opened inside the fixing plate. An electric heating rod passes through the through holes. A plurality of first protective pads are fixedly connected to the bottom of the pressure plate. The top and bottom of the electric heating rod are respectively attached to the side opposite to the first and second protective pads.

[0009] The outer surface of the protective shell is rotatably connected to a rotating ring via a bearing. A movable component is provided between the rotating ring and the interior of the protective shell. One side of the movable component extends into the groove, and a baffle is fixedly connected to one side of the movable component.

[0010] Preferably, the movable component includes multiple mounting slots formed on the outer surface of the protective shell. A rotating rod is rotatably connected between the upper and lower surfaces inside the mounting slots. A spur gear is fixedly connected to the lower part of the outer surface of the rotating rod. A continuous inner groove is formed inside the rotating ring corresponding to the mounting slot. Multiple evenly distributed meshing teeth are fixedly connected to the inner sidewall of the inner groove. The meshing teeth mesh with the spur gear. A through groove is formed on the inner sidewall of the mounting slot. A sliding groove is formed on one side inside the through groove. The sliding groove communicates with the interior of the recess. A telescopic component is provided inside the sliding groove. The telescopic component is installed with the rotating rod.

[0011] Preferably, the telescopic assembly includes a helical gear one fixedly connected above the outer surface of the rotating rod, a limiting groove is formed on the upper surface of the inner side of the slide groove, a limiting block is slidably connected inside the limiting groove, a threaded rod is rotatably connected inside the through groove via a bearing, a helical gear two is fixedly connected to one end of the threaded rod located inside the mounting groove, the helical gear two meshes with the helical gear one, an internal threaded sleeve is threadedly connected to the outer surface of the threaded rod located inside the slide groove, one end of the internal threaded sleeve located inside the groove is fixedly connected to a baffle, and the limiting block is fixedly connected to the internal threaded sleeve.

[0012] Preferably, the bottom of the baffle is in contact with the lower surface inside the groove, and the baffle is slidably connected to the groove.

[0013] Preferably, the first protective pad corresponds to the through hole, and both the first and second protective pads are made of flexible material.

[0014] Preferably, a handle is fixedly connected to the top of the pressure plate.

[0015] Preferably, handles are fixedly connected to both the left and right sides of the outer surface of the protective shell.

[0016] The advantages of this utility model are:

[0017] This utility model can protect electric heating rods by using a protective shell and two protective pads, and can protect multiple electric heating rods. At the same time, rotating the rotating ring can make the moving component work, and the working of the moving component can drive the baffle to move. The movement of the baffle can limit and release the pressure plate, thus facilitating the protection of the electric heating rods and making it easy to put the electric heating rods in and out, thus making the protective component highly practical. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure in Example 1;

[0020] Figure 2 This is a top view of the structure in Embodiment 1;

[0021] Figure 3 This is a schematic diagram of a partial cross-section of the structure in Example 1;

[0022] Figure 4 As in Example 1 Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 As in Example 1 Figure 3 Enlarged structural diagram at point B.

[0024] In the diagram: 1. Protective shell; 2. Handle; 3. Rotary ring; 4. Groove; 5. Baffle; 6. Slot; 7. Pressure plate; 8. Handle; 9. Moving component; 91. Internal threaded sleeve; 92. Slide groove; 93. Threaded rod; 94. Limiting groove; 95. Limiting block; 96. Through groove; 97. Mounting groove; 98. Rotating rod; 99. Inner groove; 910. Meshing teeth; 911. Spur gear; 912. Helical gear one; 913. Helical gear two; 10. Protective pad one; 11. Electric heating rod; 12. Fixing plate; 13. Through hole; 14. Protective pad two; 15. Placement groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figure 1-4 As shown, a protective assembly for an electric heating element for in-situ thermal desorption of soil includes a protective shell 1, a placement groove 15 is provided inside the protective shell 1, a slot 6 is provided on the upper surface inside the placement groove 15, and a through groove 4 is provided on the upper surface inside the slot 6.

[0028] A second protective pad 14 is fixedly connected to the lower surface inside the placement slot 15. A pressure plate 7 is inserted into the slot 6. A fixing plate 12 is fixedly connected to the placement slot 15. A plurality of through holes 13 are opened inside the fixing plate 12. An electric heating rod 11 passes through the through holes 13. A plurality of first protective pads 10 are fixedly connected to the bottom of the pressure plate 7. The top and bottom of the electric heating rod 11 are respectively attached to the side opposite to the first protective pad 10 and the second protective pad 14.

[0029] A rotating ring 3 is rotatably connected to the outer surface of the protective shell 1 via a bearing. A movable component 9 is disposed between the rotating ring 3 and the interior of the protective shell 1. One side of the movable component 9 extends into the groove 4, and a baffle 5 is fixedly connected to one side of the movable component 9. During operation, the electric heating rod 11 can be placed through the placement slot 15 inside the protective shell 1, and the multiple through holes 13 inside the fixing plate 12 facilitate the placement of multiple electric heating rods 11. After placement, they are protected by protective pad 10 and protective pad 14. Therefore, the protective shell 1, protective pad 10, and protective pad 14 can protect the electric heating rod 11, and multiple electric heating rods 11 can be protected. At the same time, rotating the rotating ring 3 activates the movable component 9. Furthermore, the operation of the moving component 9 drives the baffle 5 to move to the top of the pressure plate 7 and fit and limit the pressure plate 7, thus ensuring that the electric heating rod 11 inside the protective shell 1 is placed stably. When it is necessary to remove the electric heating rod 11, the rotating ring 3 is rotated in the opposite direction to the movement of the baffle 5 to the top of the pressure plate 7, which allows the baffle 5 to move away from the limiting position on the pressure plate 7. Then, the pressure plate 7 is moved to move out of the slot 6, which allows the pressure plate 7 and the protective pad 10 to be released from the limiting position on the electric heating rod 11. Then, the electric heating rod 11 can be removed. This makes it easy for the protective component to protect the electric heating rod 11 and to remove and put away the electric heating rod 11, thus making the protective component highly practical.

[0030] The movable component 9 includes multiple mounting slots 97 formed on the outer surface of the protective shell 1. A rotating rod 98 is rotatably connected between the upper and lower surfaces inside the mounting slots 97. A spur gear 911 is fixedly connected to the lower part of the outer surface of the rotating rod 98. A continuous inner groove 99 is formed inside the rotating ring 3 corresponding to the mounting slots 97. Multiple evenly distributed meshing teeth 910 are fixedly connected to the inner wall of the inner groove 99. The meshing teeth 910 mesh with the spur gear 911. A through groove 96 is formed on the inner wall of the mounting slot 97. A sliding groove 92 is formed on one side inside the through groove 96. The sliding groove 92 interacts with the groove 4. The slide groove 92 is connected to the sliding groove 92, and a telescopic component is installed inside the slide groove 92. During operation, the rotating ring 3 is rotated on the outer surface of the protective shell 1 under the limit of the bearing. After the rotating ring 3 rotates, it drives the meshing teeth 910 inside the inner groove 99 to rotate. Then, after the meshing teeth 910 rotate, they drive the spur gear 911 that meshes with it to rotate. After the spur gear 911 rotates, it drives the rotating rod 98 to rotate. Then, after the rotating rod 98 rotates, it can drive the telescopic component to work, and make the baffle 5 move to limit and disengage the pressure plate 7, so that the movement of the baffle 5 is more convenient.

[0031] The telescopic assembly includes a helical gear 912 fixedly connected above the outer surface of the rotating rod 98. A limiting groove 94 is formed on the upper surface of the inner side of the slide groove 92. A limiting block 95 is slidably connected inside the limiting groove 94. A threaded rod 93 is rotatably connected inside the through groove 96 via a bearing. A helical gear 913 is fixedly connected to one end of the threaded rod 93 inside the mounting groove 97. The helical gear 913 meshes with the helical gear 912. An internally threaded sleeve 91 is threadedly connected to the outer surface of the threaded rod 93 inside the slide groove 92. One end of the internally threaded sleeve 91 inside the groove 4 is fixedly connected to a baffle 5. The limiting block 95 is fixedly connected to the internally threaded sleeve 91. During operation, through… The rotation of the rotating rod 98 can drive the rotation of the first helical gear 912 and the second helical gear 913 meshing with the first helical gear 912. After the second helical gear 913 rotates, it drives the threaded rod 93 to rotate. Then, the rotation of the threaded rod 93 can drive the internal threaded sleeve 91, which is threaded to it, to move under the limitation of sliding inside the limiting groove 94 through the limiting block 95. The movement of the internal threaded sleeve 91 can drive the baffle 5 to move to the top of the pressure plate 7 to fit and limit the pressure plate 7, and make the electric heating rod 11 inside the protective shell 1 stable. At the same time, the rotating rod 98 can reverse to move the baffle 5 away, so as to facilitate the limitation and removal of the baffle 5 and the pressure plate 7, and to facilitate the removal and placement of the electric heating rod 11 from inside the protective shell 1.

[0032] The bottom of the baffle 5 is in contact with the lower surface inside the groove 4, and the baffle 5 is slidably connected to the groove 4. During operation, the baffle 5 can slide inside the groove 4 to limit the pressure plate 7, or it can move away from the limit.

[0033] The protective pad 10 corresponds to the through hole 13. Both the protective pad 10 and the protective pad 14 are made of flexible material. During operation, the protective pad 10 can fit and protect the electric heating rod 11 that passes through the through hole 13. The flexible material protective pad 10 and the protective pad 14 can provide better protection for the electric heating rod 11.

[0034] A handle 8 is fixedly connected to the top of the pressure plate 7; during operation, the handle 8 facilitates the movement and insertion of the pressure plate 7.

[0035] Example 2

[0036] Please see Figure 1 As shown in the first embodiment, as another implementation of this utility model, handles 2 are fixedly connected to both the left and right sides of the outer surface of the protective shell 1; during operation, the handles 2 facilitate the movement and handling of the protective shell 1, and also facilitate the movement and handling of the protective component.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A protective assembly for an electric heating element for in-situ thermal desorption of soil, comprising a protective shell (1), wherein a placement groove (15) is provided inside the protective shell (1), a slot (6) is provided on the upper surface inside the placement groove (15), and a through groove (4) is provided on the upper surface inside the slot (6); Its features are: A second protective pad (14) is fixedly connected to the lower surface inside the placement slot (15). A pressure plate (7) is inserted into the slot (6). A fixing plate (12) is fixedly connected inside the placement slot (15). A plurality of through holes (13) are opened inside the fixing plate (12). An electric heating rod (11) passes through the through holes (13). A plurality of first protective pads (10) are fixedly connected to the bottom of the pressure plate (7). The top and bottom of the electric heating rod (11) are respectively attached to the side opposite to the first protective pad (10) and the second protective pad (14). The outer surface of the protective shell (1) is rotatably connected to a rotating ring (3) via a bearing. A moving component (9) is provided between the rotating ring (3) and the interior of the protective shell (1). One side of the moving component (9) extends into the interior of the groove (4), and a baffle (5) is fixedly connected to one side of the moving component (9).

2. The protective assembly for an electric heating element used for in-situ thermal desorption of soil according to claim 1, characterized in that: The movable component (9) includes multiple mounting slots (97) formed on the outer surface of the protective shell (1). A rotating rod (98) is rotatably connected between the upper and lower surfaces inside the mounting slot (97). A spur gear (911) is fixedly connected below the outer surface of the rotating rod (98). A continuous inner groove (99) is formed inside the rotating ring (3) corresponding to the mounting slot (97). Multiple evenly distributed meshing teeth (910) are fixedly connected to the inner wall of the inner groove (99). The meshing teeth (910) mesh with the spur gear (911). A through groove (96) is formed on the inner wall of the mounting slot (97). A sliding groove (92) is formed on one side inside the through groove (96). The sliding groove (92) communicates with the interior of the groove (4). A telescopic component is provided inside the sliding groove (92). The telescopic component is installed with the rotating rod (98).

3. The protective assembly for an electric heating element used for in-situ thermal desorption of soil according to claim 2, characterized in that: The telescopic assembly includes a helical gear one (912) fixedly connected above the outer surface of the rotating rod (98), a limiting groove (94) is opened on the inner upper surface of the slide groove (92), a limiting block (95) is slidably connected inside the limiting groove (94), a threaded rod (93) is rotatably connected inside the through groove (96) through a bearing, a helical gear two (913) is fixedly connected to one end of the threaded rod (93) located inside the mounting groove (97), the helical gear two (913) meshes with the helical gear one (912), an internal threaded sleeve (91) is threadedly connected to the outer surface of the threaded rod (93) inside the slide groove (92), one end of the internal threaded sleeve (91) located inside the groove (4) is fixedly connected to the baffle (5), and the limiting block (95) is fixedly connected to the internal threaded sleeve (91).

4. The protective assembly for an electric heating element used for in-situ thermal desorption of soil according to claim 3, characterized in that: The bottom of the baffle (5) is in contact with the lower surface inside the groove (4), and the baffle (5) and the groove (4) are slidably connected.

5. The protective assembly for an electric heating element used for in-situ thermal desorption of soil according to claim 4, characterized in that: The protective pad one (10) corresponds to the through hole (13), and both the protective pad one (10) and the protective pad two (14) are made of flexible material.

6. The protective assembly for an electric heating element used for in-situ thermal desorption of soil according to claim 5, characterized in that: A handle (8) is fixedly connected to the top of the pressure plate (7).

7. The protective assembly for an electric heating element used for in-situ thermal desorption of soil according to claim 6, characterized in that: The protective shell (1) has handles (2) fixedly connected to both the left and right sides of its outer surface.

Images