Deep well casing lossless fisher

Abstract

The utility model provides a deep well casing lossless fisher which comprises a hollow pipe-shaped fisher body, baffles are symmetrically arranged on the two sides of the lower portion of the fisher body, a spring piece is connected between the two baffles, and a long-strip-shaped through hole is formed in the lower portion of the fisher body in the height direction of the fisher body. Under the normal non-use condition, the acting force of the spring pieces outwards enables the baffles to expand outwards to the outside of the long-strip-shaped through holes. The lower guide strip extends downwards into a sleeve of a deep well, in the process that the device body moves downwards along with gravity, the baffle makes contact with the sleeve, gradually moves downwards along with the device body and gradually retracts into the device body, and after the baffle penetrates through the sleeve, the baffle expands outwards under the action of the elastic force of the spring piece, the upper surface of the baffle makes contact with the lower surface of the sleeve, and the sleeve is separated from the sleeve. The steel wire rope is pulled upwards, the sleeve and the device body gradually move upwards along with the steel wire rope until the sleeve is pulled out, and the device is simple in structure, convenient to use and capable of being used and popularized.

Description

Technical Field

[0001] The utility model relates to the technical field of fishing tools, in particular to a non-destructive fishing device for deep well casing. Background Art

[0002] A deep water well is a well that obtains deep groundwater. As the utilization rate of deep water wells increases, a large number of water well problems will also occur. Landslides under the well, buried water pumps, etc. cause the plastic in the well to deform and damage. In this case, the casing in the well must be removed. The existing method of removing the casing in the well requires that all the casing be cut in half. In this way, the ash from the sawing not only pollutes the environment, but also the casing cannot be reused. Utility Model Content

[0003] In view of this, in order to solve the problems existing in the technical background, the utility model proposes a deep well casing non-destructive fishing device, and the specific technical solution is as follows:

[0004] A non-destructive salvage device for deep well casing comprises a hollow tubular body, baffles are symmetrically arranged on both sides of the lower side of the body, a spring sheet is connected between the two baffles, and a long through hole is opened along the height direction of the lower side of the body. When not in normal use, the spring sheet acts outward to expand the baffle outward to the outside of the long through hole.

[0005] Furthermore, a lower guide bar formed by bending a steel wire into a "U" shape is fixedly connected below the body, an upper guide bar formed by bending a steel wire into an inverted "U" shape is fixedly connected above the body, and a positioning cone is connected above the upper baffle bar via a steel wire rope.

[0006] Furthermore, the positioning cone is inserted into the steel wire rope, and the positioning cone can slide inside the steel wire rope.

[0007] Furthermore, the spring sheet is in a "V" shape, and the baffle is fixedly connected to both ends of the spring sheet.

[0008] Furthermore, the shape of the portion of the baffle extending out of the body is triangular.

[0009] The above technical solution has the following beneficial effects:

[0010] The utility model extends the lower guide bar downward into the casing of the deep well, and in the process that the device body moves downward with gravity, the baffle contacts the casing, and as the device body gradually moves downward, the baffle is gradually retracted into the device body. After the baffle passes through the casing, the baffle expands outward due to the elastic force of the spring sheet, and the upper surface of the baffle contacts the lower surface of the casing, pulling the wire rope upward, and the casing and the device body gradually move upward with the wire rope until the casing is pulled out, and the pulled out casing can be reused. In addition, the pollution to the environment caused by cutting is reduced. The utility model has a simple structure, is easy to use, and can be promoted for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of a non-destructive fishing device for deep well casing according to the utility model;

[0012] Figure 2 for Figure 1 A magnified schematic diagram of part A in FIG.

[0013] Figure 3 The structure diagram for use Figure 1 ;

[0014] Figure 4 The structure diagram for use Figure 2 ;

[0015] In the figure: 1-body; 2-lower guide bar; 3-upper guide bar; 4-baffle; 5-positioning cone; 6-wire rope; 7-long through hole; 8-sleeve; 9-spring sheet. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Example 1: See Figure 1 and 2 A non-destructive salvage device for deep well casing 8 is shown, comprising a hollow tubular body 1, baffles 4 are symmetrically provided on both sides of the lower side of the body 1, a spring sheet 9 is connected between the two baffles 4, and a long through hole 7 is opened along the height direction of the lower side of the body 1. When not in normal use, the force of the spring sheet 9 causes the baffle 4 to expand outward to the outside of the long through hole 7.

[0018] A lower guide bar 2 made of steel wire bent into a "U" shape is fixedly connected at the bottom of the device body 1, and an upper guide bar 3 made of steel wire bent into an inverted "U" shape is fixedly connected at the top of the device body 1. A positioning cone 5 is connected to the top of the upper baffle through a steel wire rope 6, and the positioning cone 5 is inserted into the steel wire rope 6. The positioning cone 5 can slide in the steel wire rope 6. The spring sheet 9 is in a "V" shape, and the baffle 4 is fixedly connected to both ends of the spring sheet 9. The shape of the part of the baffle 4 extending out of the device body 1 is triangular.

[0019] The body 1 of the utility model is a metal tube, and the lower guide bar 2 and the upper guide bar 3 are fixed at the upper and lower ends of the body 1 respectively.

[0020] When the utility model is used in a specific manner, Figure 3 As shown, the lower guide bar 2 is extended downward into the casing 8 of the deep well. When the body 1 moves downward due to gravity, the baffle 4 contacts the casing 8. As the body 1 gradually moves downward, the baffle 4 is gradually retracted into the body 1. After the baffle 4 passes through the casing 8, the baffle 4 expands outward due to the elastic force of the spring sheet 9, as shown in FIG. Figure 4 As shown, the upper surface of the baffle 4 contacts the lower surface of the sleeve 8, the diameter of the positioning cone 5 is larger than the diameter of the sleeve 8, and at this time the lower part of the positioning cone 5 contacts the upper surface of the sleeve 8, the wire rope 6 is pulled upward, the sleeve 8 and the device body 1 gradually move upward with the wire rope 6 until the sleeve 8 is pulled out, and the baffle 4 is manually squeezed inward to make the sleeve 8 fall out from the bottom of the device body 1. The utility model has a simple structure, is easy to use, and can be promoted for use.

[0021] The basic principles and main features of the utility model are described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A non-destructive fishing device for deep well casing, characterized in that: It includes a hollow tubular body, with baffles symmetrically arranged on both sides of the bottom of the body, a spring sheet connected between the two baffles, and a long through hole opened along the height direction of the bottom of the body. When not in normal use, the force of the spring sheet causes the baffle to expand outward to the outside of the long through hole.

2. A non-destructive fishing device for deep well casing according to claim 1, characterized in that: A lower guide bar formed by bending a steel wire into a "U" shape is fixedly connected below the body, an upper guide bar formed by bending a steel wire into an inverted "U" shape is fixedly connected above the body, and a positioning cone is connected above the upper guide bar via a steel wire rope.

3. A non-destructive fishing device for deep well casing according to claim 2, characterized in that: The positioning cone is inserted into the steel wire rope, and the positioning cone can slide inside the steel wire rope.

4. A non-destructive fishing device for deep well casing according to claim 1, characterized in that: The spring sheet is in a "V" shape, and the baffle is fixedly connected to both ends of the spring sheet.

5. The non-destructive fishing device for deep well casing according to claim 1, characterized in that: The shape of the part of the baffle extending out of the body is triangular.

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