CN206731802U - A kind of heater for soil organic contamination source in-situ immobilization - Google Patents

Abstract

The utility model discloses a kind of heater for soil organic contamination source in-situ immobilization, including the sleeve pipe, the heating element heater in sleeve pipe, power connection being placed in the opening of soil, one end of sleeve pipe is provided with external screw thread, and the other end of sleeve pipe is provided with matches internal thread with external screw thread；The both ends of sleeve pipe are equipped with the chamber for installing power connection, and the male and female of power connection are respectively equipped with two chambers；The through hole one for connecting chamber and inside pipe casing is provided with chamber；Sleeve pipe is provided with through hole two, and the outer wall of sleeve pipe is provided with the pushing part for being used for removing the soil in the side wall of opening.Effect with convenient installation.

Description

A heating device for in-situ remediation of soil organic pollution sources

technical field

The utility model relates to the technical field of in-situ restoration of soil organic pollutants, in particular to a heating device for in-situ restoration of soil organic pollution sources.

Background technique

With the development of industrial technology, nearly one-fifth of China's existing cultivated land is polluted to varying degrees. Polluted soil will lead to crop yield reduction, and may even cause pollutants in agricultural products to exceed the standard, thereby endangering human health. In addition, with the acceleration of economic development and urbanization, the site pollution caused by industrial and mining enterprises is also very serious. Soil is an important material basis for human social production activities and an indispensable natural resource that is difficult to regenerate. Therefore, we must attach great importance to the prevention of soil pollution and the remediation of contaminated soil.

In-situ soil remediation refers to the soil remediation technology that does not move the contaminated soil, but directly remediates or treats the contaminated soil in situ. It has the characteristics of low investment and little impact on the surrounding environment. In-Situ Heating uses heat to move or "enhance" the mobility of harmful chemicals in soil and groundwater through which they move to extraction wells where they are collected and transported to the surface where they are disposed of by other technologies . Some chemicals are destroyed in the ground during the heating process. It works especially well with chemicals known as "non-aqueous liquids," which don't dissolve easily in groundwater. Non-aqueous liquids can become a source of groundwater contamination for long periods of time if not remediated. Solvents, petroleum, and pomegranate oil are all non-aqueous liquids.

The heating pipe is a necessary element for soil restoration by the in-situ heating method. When the existing heating pipe is installed, an opening of a certain depth needs to be drilled in the soil, and then the heating pipe is placed in the opening.

The disadvantage of the prior art is that, since the soil itself is not dense, the soil around the opening will collapse, thereby generating a relatively large frictional force on the outer wall of the heating tube, making the heating tube difficult to install.

Utility model content

The purpose of this utility model is to provide a heating device for in-situ restoration of soil organic pollution sources, which solves the problem of inconvenient installation caused by the collapse of soil in the opening in the installation of existing heating pipes, and has the advantages of convenient installation. Effect.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions:

A heating device for in-situ restoration of soil organic pollution sources, comprising a casing placed in an opening of the soil, a heating element disposed in the casing, and a power connector, one end of the casing is provided with an external thread, and the other end of the casing is There are internal threads matching the external threads; both ends of the casing are provided with chambers for installing power connectors, and the two chambers are respectively provided with male and female connectors for power connectors; A first through hole inside the casing; a second through hole is provided on the casing, and a pushing part for removing the soil on the side wall of the opening is provided on the outer wall of the casing.

With the above structure, the two ends of the casing are respectively provided with external threads and internal threads, which can be matched with each other during use, thereby prolonging the actual use length of the heating device. In different applications, the required length of the heating device can be adjusted. The setting of the pushing part makes the appearance surface no longer smooth. During the process of installing the casing, when the casing is rotated, the pushing part can push away a small amount of collapsed soil in the opening, thereby facilitating the installation of the casing. At the same time, the setting of the moving part can also improve the installation firmness between the sleeve pipe and the soil.

It is further preferred that: the outer wall of the casing is provided with a fixed threaded hole for installing a threaded drill bit.

With the above-mentioned structure, when installing the casing, a fixed threaded drill bit is installed on the frontmost casing, which is beneficial to help the fast installation of the casing.

Further preferably, the pushing portion is an external thread arranged along the circumference of the casing.

With the above structure, the external thread can not only be used to push the soil away, but also provide downward traction during the turning process.

It is further preferred that the pushing portion is a bump one provided on the outer wall of the sleeve, and the bump one includes a vertically arranged end face and an arc connected to the end face, and the arc is from the end face away from the end of the sleeve to the end of the sleeve. The outer wall is continuously inclined.

With the above structure, the end face provides tangential force, which is beneficial to push away the surrounding soil during installation. At the same time, the setting of the arc surface can reduce the friction force during reverse rotation, which is beneficial to take the casing out of the soil and reuse it.

It is further preferred that: the end surface is inclined to the diameter of the casing.

With the above structure, the inclined end surface and the inner wall of the opening are also inclined, so that it is beneficial to push away the surrounding soil during installation, and further improves the convenience of installation.

It is further preferred that: the first protrusion is arranged at intervals in the axial direction of the casing.

With the above-mentioned structure, the projections are arranged at intervals so that the projections on both sides of the casing can simultaneously provide pushing force to the soil on the inner wall of the opening, thereby improving the effect and further improving the convenience of installation.

It is further preferred that the second through hole is flared from the inside of the sleeve to the outside of the sleeve.

With the above structure, on the one hand, the through hole 2 provided by the flaring can diffuse the airflow in the casing in the direction of opening, which is conducive to increasing the diffusion range of the airflow, so that the heat in the heating tube can be spread evenly in a wide range as much as possible. On the other hand, the opening of the second through hole near the inside of the casing is smaller, which can reduce the leakage of soil into the casing.

More preferably, a filter screen is provided on the second through hole, a bracket for supporting the heating element is provided inside the sleeve, the filter screen covers the inner side of the sleeve tube, and is in contact with the inner wall of the sleeve tube through the bracket.

With the above structure, the bracket can be used as a support frame for the heating element on the one hand, and can be used as a support for the filter screen on the other hand, so that the filter screen is closely attached to the inner wall of the casing to improve the filtering effect on soil particles and impurities in the soil.

In summary, the utility model has the following beneficial effects: the two ends of the casing are respectively provided with external threads and internal threads, which can be matched with each other during use, thereby prolonging the actual use length of the heating device. In different applications, it can Adjust the length of the heating unit required. The setting of the pushing part makes the appearance surface no longer smooth. During the process of installing the casing, when the casing is rotated, the pushing part can push away a small amount of collapsed soil in the opening, thereby facilitating the installation of the casing. At the same time, the setting of the moving part can also improve the installation firmness between the sleeve pipe and the soil.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of embodiment 1;

Fig. 2 is the overall structural representation of embodiment 1;

3 is a schematic diagram of the structure in the chamber of Embodiment 1, showing the male structure of the power connector;

Fig. 4 is the partial structural representation of embodiment 2;

Fig. 5 is a top view of Embodiment 2, showing the structure of bump 1;

FIG. 6 is a top view of Embodiment 3, showing the structure of the second bump.

In the figure, 1, casing; 11, bump one; 111, end face; 112, arc surface; 12, bump two; 2, heating element; 3, male head; 4, female head; 5, through hole one; 6. Through hole 2; 7. Filter screen; 8. Bracket; 9. Threaded drill bit; 10. Fixed threaded hole.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new inventions are protected by patent law.

Embodiment 1: A heating device for in-situ remediation of soil organic pollution sources, referring to Figures 1-3, including a casing 1 placed in an opening of the soil, a heating element 2 disposed in the casing 1, and a power connector. One end of the casing 1 is provided with an external thread, and the other end of the casing 1 is provided with an internal thread matching the external thread. Two casings 1 can be connected to each other through the matching of the external thread and the internal thread to form casings of different lengths. Tube 1, provides in situ remediation of soils at various depths.

Both ends of the casing 1 are provided with chambers for installing power connectors. The two chambers are respectively provided with a male head 3 and a female head 4 of the power connector. The chamber is provided with a communication port for connecting the chamber and the inside of the casing 1. Hole one 5. The sleeve 1 is provided with a second through hole 6, and the second through hole 6 is flared from the inside of the sleeve 1 to the outside of the sleeve 1 . A filter screen 7 is provided on the second through hole 6 , and a bracket 8 for supporting the heating element 2 is provided inside the casing 1 . The filter screen 7 covers the inner side of the casing 1 and touches against the inner wall of the casing 1 through the bracket 8 . There are two brackets 8 , which are arranged in the casing 1 opposite to the two ends of the casing 1 .

The outer wall of the casing 1 is provided with a pushing part for removing the soil on the side wall of the opening. The pushing part is a thread arranged along the circumference of the casing 1 . The outer wall of the casing 1 is provided with a fixing threaded hole 10 for fixing the threaded drill bit 9 . The threaded drill bit 9 is fixedly connected with the fixed threaded hole 10 by bolts.

Embodiment 2: A heating device for in-situ restoration of soil organic pollution sources, as shown in Figure 4 and Figure 5, the difference from Embodiment 1 is that the pushing part is a bump-11 arranged on the outer wall of the casing 1 , The first bumps 11 are arranged at intervals in the axial direction of the casing 1 . The first bump 11 includes a vertical end surface 111 and an arc surface 112 connected to the end surface 111 . The arc surface 112 is arranged from the end surface 111 away from the end of the casing 1 to the outer wall of the casing 1 . The end surface 111 is inclined to the diameter of the casing 1 .

Embodiment 3: A heating device for in-situ restoration of soil organic pollution sources. The difference from Embodiment 1 is that the pushing part is a bump 2 12 arranged on the outer wall of the casing 1, and the outer surface of the bump 12 is along the The circumferential direction of the casing 1 is set away from the casing 1 and then close to the casing 1 . The outer surface of the second bump 12 is set away from the sleeve 1 and then close to the sleeve 1 along the axial direction of the sleeve 1; the span of the second bump 12 in the circumferential direction of the sleeve 1 is larger than its span in the axial direction of the sleeve 1 . The second bumps 12 are arranged at intervals in the axial direction of the casing 1 .

Preparation and installation process: first prepare the sleeve 1, punch holes (through hole 2 6), then install the filter screen 7 in the sleeve 1, put the bracket 8 into the sleeve 1, and make the sleeve 1 cover the filter screen 7 Press on the inner wall of the sleeve pipe 1 to realize the fixing of the filter screen 7; continue to install the rest of the components, and the wiring of the power line can be installed along the inner wall of the sleeve pipe 1, which can be easily implemented according to the existing technology, and will not be repeated. Before use, the external thread and the internal thread at the end of the casing 1 are mated and connected to a required length, and a threaded joint is fixedly installed at one end thereof. During installation, an opening is firstly drilled in the soil, and then the sleeve pipe 1 is loaded into the opening by means of rotation. The pushing part can push away a small amount of collapsed soil in the opening, thereby facilitating the installation of the casing 1 .

Claims (8)

1. a kind of heater for soil organic contamination source in-situ immobilization, including be placed in the opening of soil sleeve pipe (1), Heating element heater (2), power connection in sleeve pipe (1), it is characterized in that：One end of described sleeve pipe (1) is provided with external screw thread, sleeve pipe (1) the other end is provided with matches internal thread with external screw thread；The both ends of described sleeve pipe (1) are equipped with the chamber for installing power connection Room, the male (3) and female (4) of power connection are respectively equipped with two chambers；It is provided with the chamber and is used to connect chamber The room through hole one (5) internal with sleeve pipe (1)；Described sleeve pipe (1) is provided with through hole two (6), and the outer wall of described sleeve pipe (1) is provided with The pushing part of the soil in side wall for removing opening.

2. a kind of heater for soil organic contamination source in-situ immobilization according to claim 1, it is characterized in that：Institute The outer wall for stating sleeve pipe (1) is provided with the fixing screwed hole (10) for being used for installing screw thread drill bit (9).

3. a kind of heater for soil organic contamination source in-situ immobilization according to claim 1, it is characterized in that：Institute It is along the circumferentially disposed external screw thread of sleeve pipe (1) to state pushing part.

4. a kind of heater for soil organic contamination source in-situ immobilization according to claim 1, it is characterized in that：Institute State pushing part includes an end face being vertically arranged for the projection one (11) on sleeve pipe (1) outer wall, the projection one (11) (111) cambered surface (112) and with end face (111) being connected, the cambered surface (112) one end away from sleeve pipe (1) from end face (111) Constantly it is arranged close to the outer wall of sleeve pipe (1).

5. a kind of heater for soil organic contamination source in-situ immobilization according to claim 4, it is characterized in that：Institute End face (111) is stated to be inclined to set with sleeve pipe (1) diameter.

6. a kind of heater for soil organic contamination source in-situ immobilization according to claim 4 or 5, its feature It is：The projection one (11) is set in distance in the axial direction of sleeve pipe (1).

7. a kind of heater for soil organic contamination source in-situ immobilization according to claim 1, it is characterized in that：Institute Through hole two (6) is stated to set in enlarging to sleeve pipe (1) is outside from sleeve pipe (1) is internal.

8. a kind of heater for soil organic contamination source in-situ immobilization according to claim 1, it is characterized in that：Institute State through hole two (6) and be provided with filter screen (7), the support (8) for being used for supporting heating element heater (2), the filter are provided with described sleeve pipe (1) Net (7) is covered on the inside of sleeve pipe (1), and is contacted at by support (8) on sleeve pipe (1) inwall.