Rotary combined cutter head for pipeline crushing and thawing and pipeline crushing and thawing device

Abstract

The present invention discloses a rotary combined cutter head for pipeline crushing and thawing and a pipeline crushing and thawing device. The rotary combined cutter head for pipeline crushing and thawing includes a cutter head mounting plate, a central cutter head and peripheral cutter heads. The peripheral cutter heads are arranged around the central cutter head, and the two are spaced and installed on the same side of the cutter head mounting plate. The pipeline crushing and thawing device includes a rotary combined cutter head for pipeline crushing and thawing, a motor, a motor mounting seat, an antifreeze storage tank arranged at the rear end of the motor mounting seat, a spray head arranged at the rear end of the antifreeze storage tank, and at least three traveling wheels arranged at intervals around the circumferential direction on the outside of the motor mounting seat. A driving motor for driving the traveling wheels to travel along the inner wall of the pipeline is further arranged in the motor mounting seat; the output end of the motor is in transmission connection with a cutter bar and is used for driving the cutter bar to rotate around the axis. The pipeline crushing and thawing device of the present invention is used for thawing and unblocking pipelines in alpine regions. Through the two-way breaking mode from the periphery to the center and from the center to the periphery, the thawing efficiency can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline thawing and blocking, and in particular to a rotating combined cutter head for pipeline crushing and thawing and a pipeline crushing and thawing device. Background Art

[0002] In winter, the temperature in high-altitude cold areas can reach minus 20 degrees Celsius, and even minus 40 degrees Celsius in some areas. Although the technology in the field of modern pipelines is relatively mature, certain insulation, heating, mixing and other measures are taken to prevent liquid pipelines from freezing under normal circumstances. However, once such an accident occurs, the losses caused are indeed not small. The commonly used method is to remove the insulation layer and use hot water or steam trucks for heating; at the same time, use air compressors to forcefully squeeze the pipelines, causing a large amount of pipeline liquid to overflow and cause environmental pollution; air compressors forcefully squeeze the pipelines, causing problems such as overpressure perforation and cracks in the pipelines to occur frequently, and the dredging time is slow, the thermal efficiency is low, and a large amount of heat energy is lost. In addition, once a large water pipeline is frozen and blocked, it will bring considerable difficulties to the work of unblocking. In order to reduce economic losses, it is necessary to resume pipeline operation as soon as possible. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the process of pipeline thawing and blocking. The present invention provides a rotating combined cutter head and a pipeline thawing and blocking device based on the combined cutter head.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A rotary combined cutter head for pipeline crushing and thawing, comprising:

[0006] A cutter head mounting plate, wherein a mounting through hole is provided in the middle of the cutter head mounting plate, and a discharge outlet is provided at a position staggered from the mounting through hole;

[0007] A center cutter head, the center cutter head comprises a conical cutter head and a cutter bar, the conical cutter head comprises a base and a blade arranged around the base, the rear end of the base is connected to the front end of the cutter bar, and the rear part of the cutter bar is axially inserted into the mounting through hole;

[0008] The peripheral cutter head includes at least three teeth arranged around the periphery of the central cutter head in a circumferential direction, the teeth are mounted on a cutter head mounting plate located on one side of the central cutter head, the teeth are spaced apart from the central cutter head and staggered from the discharge port, the teeth are pyramidal with a notch at least at the rear of the inner side, and one of the sides of the pyramidal shape is a curved surface that fits the inner wall of the pipe; the front ends of the central cutter head and the peripheral cutter head are located in the same vertical plane, and when the cutter rod is rotated around the axis, the central cutter head, the cutter head mounting plate and the peripheral cutter head can rotate synchronously. The peripheral cutter head is split, that is, it is composed of independent teeth mounted on the cutter head mounting plate. The peripheral cutter head is split, and damaged teeth can be replaced at any time without replacing the peripheral cutter head as a whole, which is convenient for saving costs.

[0009] Preferably, the base is detachably connected to the blade. Furthermore, the base is conical, and slots are evenly and spaced around the rear of the outer wall of the base, and the blades are detachably inserted into the slots, which is convenient for updating and replacing the blades. The blades can be straight or wavy. The straight blades are mainly used to overcome frozen blockages with smaller hardness and require less motor power, and the wavy blades are mainly used to overcome frozen blockages with larger hardness and require more motor power. When the base is detachably connected to the blades, blades of different shapes can be replaced as needed.

[0010] In order to facilitate the rotating combined cutter head to better match the inner wall of the pipe, so that the peripheral cutter head can completely crush the frozen blockage in the pipe without damaging the outer wall of the pipe, and move forward and backward smoothly, as a preferred embodiment, the outer edge contour line of the cutter head mounting plate is a circle that matches the inner wall of the pipe, and the peripheral cutter head is arranged at the outer edge of the cutter head mounting plate around the circumferential direction. Furthermore, the cutter head mounting plate includes an outer ring, an inner ring concentrically arranged inside the outer ring, and a connecting rod arranged between the outer ring and the inner ring and used to connect the outer ring and the inner ring. The outer ring and the inner ring between two adjacent connecting rods together surround the discharge port, and the inner ring is the mounting through hole.

[0011] A pipeline crushing and thawing device, comprising:

[0012] As mentioned above, the pipeline crushing and thawing rotary combined cutter head, motor, motor mounting seat, antifreeze liquid storage tank arranged at the rear end of the motor mounting seat, nozzle arranged at the rear end of the antifreeze liquid storage tank and at least 3 running wheels arranged at intervals around the outside of the motor mounting seat in the circumferential direction, the motor mounting seat is also provided with a driving motor for driving the running wheels to move along the inner wall of the pipeline; the output end of the motor is transmission-connected to the cutter rod and is used to drive the cutter rod to rotate around the axis.

[0013] Preferably, the motor mounting seat includes a motor mounting cavity for mounting the motor and a support portion disposed around the motor mounting cavity. The traveling wheel is mounted at the outer end of the support portion, and the driving motor is mounted within the support portion. The support portion is supported on the inner wall of the pipeline by the traveling wheel to prevent the motor from being suspended and thus affecting its stability.

[0014] Compared with the prior art, the technical effects achieved by the present invention are as follows: (1) The rotating combined cutter head for pipeline crushing and thawing of the present invention includes a conical central cutter head and peripheral cutter heads disposed around the central cutter head. The peripheral cutter heads include at least 3 cutter teeth disposed on the cutter head mounting plate around the central cutter head. The cutter teeth are pyramidal with a notch formed at least at the rear part of the inner side. One of the sides of the pyramid is a curved surface that fits the inner wall of the pipeline. Combined with the cutter head mounting plate provided with a discharge port, on the one hand, it fully crushes and thaws the circular section of the pipeline; on the other hand, it helps the crushed material move backward to prevent it from interfering with the operation of the device and reducing the energy consumption of the motor. (2) The central cutter head is used to crush the frozen blockage at the central part of the pipeline, and the peripheral cutter heads are used to crush and thaw the frozen blockage at the outer side part. Moreover, the endpoints at the front ends of the peripheral cutter heads and the central cutter head are located in the same vertical plane, enabling the thawing work to break the frozen blockage bidirectionally from the periphery to the center and from the center to the periphery. (3) The materials of the components of the rotating combined cutter head for pipeline crushing and thawing of the present invention can be selected according to needs. For example, when the hardness of the frozen blockage is small or the blocking distance is short, materials with a smaller yield limit can be selected, and vice versa. (4) The cutter teeth surrounding the peripheral cutter head have a notch formed at least at the rear part of the inner side, thus forming a cavity that can be used to place positioning devices, detection devices, spraying antifreeze reagent devices, etc. Description of the Drawings

[0015] The present invention will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 is the right view of the pipeline crushing and thawing device in the embodiment of the present invention;

[0017] Figure 2 is Figure 1 the sectional view taken along the A-A direction in

[0018] Figure 3 is Figure 1 the top view of

[0019] Figure 4 is the structural schematic diagram of the cutter head mounting plate of the pipeline crushing and thawing device in the embodiment of the present invention;

[0020] Figure 5 is the right view of the motor mounting seat of the pipeline crushing and thawing device in the embodiment of the present invention;

[0021] FIG6 (1) is a front view of the central cutter head of the pipeline crushing and thawing device in an embodiment of the present invention;

[0022] Figure 6 (2) is a left side view of Figure 6 (1);

[0023] FIG. 7 (1) is a front view of the base of the center cutter head in the pipeline crushing and thawing device in the embodiment of the present invention;

[0024] Figure 7 (2) is a left side view of Figure 7 (1);

[0025] Figure 7(3) is a cross-sectional view taken along the BB direction in Figure 7(2);

[0026] Figure 8 It is a right side view of the centerline cutter head with wavy blades.

[0027] Markings in the figure are: 1. Center cutter head, 1-1. Conical cutter head, 1-1-1. Base, 1-1-2. Blade, 1-2. Cutting rod, 2. Peripheral cutter head, 2-1. Cutting teeth, 3. Cutting head mounting plate, 3-1. Mounting through hole, 3-2. Discharge outlet, 4. Motor, 5. Motor mounting seat, 5-1. Motor mounting cavity, 5-2. Support part, 6. Rotating shaft, 7. Antifreeze storage tank, 8. Nozzle, 9. Traveling wheel. Specific implementation plan

[0028] The present invention is further described in detail below in conjunction with embodiments:

[0029] like Figures 1 to 5 , Figure 6(1), Figure 6(2), and Figures 7(1) to 7(3) As shown, a pipeline crushing and thawing device comprises a rotating combined cutter head for pipeline crushing and thawing, a motor, a motor mounting seat 5, an antifreeze storage tank 7 welded to the rear end of the motor mounting seat, a nozzle 8 arranged at the rear end of the antifreeze storage tank 7 and used to communicate with the antifreeze storage tank, and four running wheels 9 arranged at intervals around the circumferential direction on the outside of the motor mounting seat 5, wherein the motor mounting seat 5 is also provided with a driving motor for driving the running wheels 9 to move along the inner wall of the pipeline; the output end of the motor 4 is transmission-connected to the cutter bar 1-2 and is used to drive the cutter bar to rotate around the axis. The support portion 5-2 of the running wheel 9 is used to prevent the motor mounting cavity 5-1 from being suspended in the air, thereby affecting its stability.

[0030] The motor mounting seat 5 includes a motor mounting cavity 5-1 for mounting the motor 4 and a support portion 5-1 arranged around the motor mounting cavity, the travel wheel 9 is mounted at the outer end of the support portion 5-1, and the drive motor is mounted in the support portion 5-1. When in use, the motor 4 is mounted in the motor mounting cavity, and the drive motor arranged in the support portion is used to drive the travel wheel to move on the inner wall of the pipeline, thereby realizing the forward or backward movement of the pipeline crushing and thawing device in the pipeline.

[0031] The tool rod of the center cutter head 1 can be further connected to the output end of the motor 4 through the rotating shaft 6. Specifically, the rear end of the tool rod is coaxially connected to the rotating shaft 6 (can be connected through a coupling or a key connection), and the rear end of the rotating shaft 6 is connected to the output shaft of the motor 4 (can be connected through a coupling or a key connection).

[0032] The above-mentioned rotary combined cutter head for crushing comprises a cutter head mounting plate 3, a central cutter head 1 and a peripheral cutter head 2. The peripheral cutter head 2 is arranged around the central cutter head 1, and the two are installed on the same side of the cutter head mounting plate 3 at intervals.

[0033] Specifically: a mounting through hole 3-1 is provided in the middle of the cutter head mounting plate 3, and a discharge port 3-2 is provided at a position staggered from the mounting through hole 3-1.

[0034] The center cutter head 1 includes a conical cutter head 1-1 and a cutter rod 1-2. The conical cutter head 1-1 includes a base 1-1-1 and a blade 1-1-2 arranged around the base. The rear end of the base 1-1-1 is connected to the front end of the cutter rod (1-2), and the rear part of the cutter rod 1-2 is axially inserted into the mounting through hole 3-1.

[0035] The peripheral cutter head 2 includes 6 teeth 2-1 uniformly arranged around the periphery of the central cutter head 1 in the circumferential direction and mounted on the cutter head mounting plate 3 by screws. The teeth 2-1 are spaced apart from the central cutter head 1 and staggered from the discharge port 3-2. The teeth 2-1 are in the shape of a triangular pyramid, one of the sides (i.e., the outer side) of the triangular pyramid is a curved surface that fits the inner wall of the pipe. A notch is provided at the inner rear of the triangular pyramid, the notch forms a cavity, and the bottom wall of the notch is used as a mounting platform for placing a positioning device, a detection device, and an antifreeze agent spraying device, etc. (the front of the teeth is a sharp portion). The front ends of the central cutter head 1 and the peripheral cutter head 2 are located in the same vertical plane. When the cutter rod is rotated around the axis, the central cutter head 1, the cutter head mounting plate 3, and the peripheral cutter head 2 can rotate synchronously. The blades of the teeth 2-1 are arranged on both sides of the curved surface that fits the pipe.

[0036] More specifically, the rear end of the base 1-1-1 is coaxially connected to the front end of the tool bar 1-2 (the two can be connected by threads or directly welded, or by a clamping connection. Specifically, a polygonal blind hole is provided on the end face of the rear end of the base, and the front end of the tool bar is matched with the polygonal blind hole. After the front end of the tool bar is inserted into the polygonal blind hole, it is fixed by a conventional fixing method in the art, that is, fixed by a fixing pin inserted into the part of the tool bar located at the rear end of the polygonal blind hole to prevent the tool bar from separating from the base. When the tool bar and the base are connected by threads, a fixing pin can also be further added for fixing.). The rear part of the tool bar 1-2 is coaxially inserted into the installation through hole 3-1 along the axis. The base 1-1-1 and the blade 1-1-2 are detachably installed. Specifically, the base 1-1-1 is conical, and slots are evenly and spaced apart around the outer wall of the rear part of the base. The blade 1-1-1 is detachably inserted into the slots. A ring plate is installed at the rear end of the base 1-1-1. The ring plate is connected to the base by screws. The ring plate is used to block the blade from the rear to prevent the blade from falling off. Behind the center tool head 1, a ring-shaped plate capable of installing screws to fix on the conical center tool head 1 is used to prevent the blade from falling off. (In order to prevent the blade from detaching from the base laterally, the ring-shaped plate can further be a disc-shaped ring-shaped plate, that is, the outer side of the ring-shaped plate is provided with a ring-shaped side wall, and the ring-shaped side wall is provided with installation slots corresponding to the rear part of the blade. During installation, the ring-shaped side wall is used to fit with the rear part of the side wall of the base, and the rear part of the blade is embedded in the installation slots, thereby forming a limiting part on the side of the blade to limit the blade in the slots). In this embodiment, the blade is straight, and the blade can also be set to a wavy shape according to needs, such as Figure 8 as shown

[0037] The tool head mounting plate 3 includes an outer ring, an inner ring concentrically arranged inside the outer ring, and connecting rods arranged between the outer ring and the inner ring and used to connect the outer ring and the inner ring. The outer ring and the inner ring between adjacent two connecting rods together enclose the discharge port 3-2. The inner ring is the installation through hole 3-1. The function of the discharge port 3-2 is to discharge the broken frozen blockage.

[0038] The pipeline crushing and thawing device of this embodiment can be used by putting it at the pipeline inlet, or can also be used after chiseling a part of the pipeline before the frozen blockage section of the pipeline; for the problem that there is still a possibility of freezing after the frozen blockage is broken, an additional device is needed to spray antifreeze on the broken material to prevent secondary freezing; because the volume of the pipeline frozen blockage is not determined, the present invention does not give a recovery device for the broken material on the thawing device to meet the needs of different occasions. For the recovery problem, a leather cup or other similar device can be used, and the broken material is driven out of the pipeline by the way of pushing with the water mixed with antifreeze or the pipeline transportation medium upstream, and then processed and recovered.

[0039] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its concept of the present invention, making equivalent substitutions or changes should be covered by the protection scope of the present invention.

Claims

1. A rotary combined cutter head for pipe crushing and thawing, characterized in that: include: A cutter head mounting plate (3), wherein a mounting through hole (3-1) is provided in the middle of the cutter head mounting plate (3), and a discharge outlet (3-2) is provided at a position staggered from the mounting through hole (3-1); A center cutter head (1), the center cutter head (1) comprising a conical cutter head (1-1) and a cutter rod (1-2), the conical cutter head (1-1) comprising a base (1-1-1) and a blade (1-1-2) arranged around the base, the blades (1-1-2) being multiple and arranged at intervals from each other, the rear end of the base (1-1-1) being connected to the front end of the cutter rod (1-2), and the rear part of the cutter rod (1-2) being inserted into the mounting through hole (3-1) along the axial direction; A peripheral cutter head (2), the peripheral cutter head (2) comprising at least three cutter teeth (2-1) arranged around the periphery of the central cutter head (1) in a circumferential direction, the cutter teeth (2-1) being mounted on a cutter head mounting plate (3) located on one side of the central cutter head, the cutter teeth (2-1) being spaced apart from the central cutter head (1) and being staggered from the discharge port (3-2), the cutter teeth (2-1) being pyramidal in shape with a notch formed at least at the rear portion of the inner side, one side surface of the pyramid being a curved surface fitted against the inner wall of the pipe, and the sharp portion of the pyramid facing forward; the front ends of the central cutter head (1) and the peripheral cutter head (2) being located in the same vertical plane, and when the cutter rod is rotated around the axis, the central cutter head (1), the cutter head mounting plate (3) and the peripheral cutter head (2) can rotate synchronously; The conical tips of the central cutting head (1) and the peripheral cutting head (2) are both facing forward.

2. The rotary combined cutter head for pipe crushing and thawing according to claim 1, wherein: The base (1-1-1) and the blade (1-1-2) are detachably connected.

3. The rotary combined cutter head for pipeline crushing and thawing according to claim 1, wherein: The base (1-1-1) is conical, and slots are evenly and spaced apart around the rear of the outer wall of the base, and the blades (1-1-2) are detachably inserted in the slots.

4. The rotary combined cutter head for pipe crushing and thawing according to any one of claims 1 to 3, characterized in that: The blade is straight or wavy.

5. The rotary combined cutter head for pipe crushing and thawing according to claim 1, wherein: The outer edge contour line of the cutter head mounting plate (3) is a circle that matches the inner wall of the pipeline, and the peripheral cutter heads (2) are arranged at the outer edge of the cutter head mounting plate (3) in a circumferential direction.

6. The rotary combined cutter head for pipe crushing and thawing according to claim 5, characterized in that: The cutter head mounting plate (3) comprises an outer ring, an inner ring concentrically arranged inside the outer ring, and a connecting rod arranged between the outer ring and the inner ring and used to connect the outer ring and the inner ring, the outer ring and the inner ring between two adjacent connecting rods jointly enclose the discharge port (3-2), and the inner ring is the mounting through hole (3-1).

7. A pipeline crushing and thawing device, characterized in that: The invention comprises a rotating combined cutter head for crushing and thawing a pipeline as claimed in any one of claims 1 to 6, a motor (4), a motor mounting seat (5), an antifreeze storage tank (7) arranged at the rear end of the motor mounting seat, a nozzle (8) arranged at the rear end of the antifreeze storage tank (7), and at least three running wheels (9) arranged at intervals on the outside of the motor mounting seat (5) in a circumferential direction, wherein a driving motor for driving the running wheels (9) to move along the inner wall of the pipeline is also arranged in the motor mounting seat (5); the output end of the motor (4) is drivingly connected to the cutter rod (1-2) and is used to drive the cutter rod to rotate around the axis.

8. The pipeline crushing and thawing device according to claim 7, wherein: The motor mounting base (5) includes a motor mounting cavity (5-1) for mounting the motor (4) and a support portion (5-2) provided around the motor mounting cavity. The traveling wheel (9) is mounted at the outer end of the support portion (5-2), and the driving motor is mounted within the support portion (5-2).

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