Horizontal directional drilling anti-overflow device

Abstract

The utility model discloses a horizontal directional drilling anti-overflow device which comprises a slurry groove, a baffle inclining outwards is arranged on the outer side of the edge of a groove opening of the slurry groove, a wedge-shaped buffering flow guide groove is formed between the baffle and the edge of the groove opening, and a flow guide through hole communicated with the bottom of the buffering flow guide groove is formed in the edge of the groove opening. And the mud entering the buffer flow guide groove can flow back into the mud groove from the flow guide through holes. According to the utility model, by arranging the anti-overflow baffle and the buffer diversion trench which are inclined inwards, slurry is effectively prevented from overflowing, the pollution and cleaning cost of a construction site are reduced, and the construction safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to horizontal directional drilling construction technical field especially relates to a horizontal directional drilling anti -overflow device. BACKGROUND

[0002] Horizontal directional drilling is widely used in trenchless construction, and mud circulation is needed in the drilling process to cool the drill bit, carry the drill cuttings and stabilize the hole wall. However, the traditional mud tank often has the problem of easy mud overflow when in use. When the amount of mud in the mud tank is too much, the flow rate is too fast, or affected by external vibration, equipment shaking and other factors, mud is easy to overflow from the edge of the tank body, which not only causes pollution to the construction site, increases the difficulty and cost of cleaning work, but also may affect the normal construction, such as causing the ground to be slippery and affecting personnel walking safety, mud flowing into surrounding equipment or pipelines causing damage, etc. Especially has the serious influence to the environment, therefore, the urgent need of a kind of effectively, convenient mud tank design to prevent mud overflow. SUMMARY

[0003] To solve the above at least one technical problem, the utility model provides a horizontal directional drilling anti -overflow device.

[0004] The technical scheme adopted by the utility model is that a horizontal directional drilling anti -overflow device is designed, which comprises a mud tank, an outwardly inclined baffle is arranged outside the slot edge of the mud tank, a wedge-shaped buffer flow guide groove is formed between the baffle and the slot edge, a flow guide through hole communicating with the bottom of the buffer flow guide groove is formed in the slot edge, so that the mud entering the buffer flow guide groove can flow back into the mud tank from the flow guide through hole.

[0005] In some embodiments, a plurality of partitions are arranged along the length direction of the slot edge between the mud tank and the baffle.

[0006] In some embodiments, a flexible protection strip is arranged at the edge of the baffle.

[0007] In some embodiments, the inclination angle of the baffle relative to the slot edge is 10°-30°.

[0008] In some embodiments, a liquid level sensor for detecting the liquid level height of the mud is arranged on the inner wall of the mud tank.

[0009] In some embodiments, the mud tank comprises an inner tank and an outer tank, the inner tank is sleeved in the outer tank and slides up and down, a float is arranged on the inner tank, so that the inner tank can rise and fall under the action of the buoyancy of the mud.

[0010] In some embodiments, the inner tank is a cylinder with an open lower end.

[0011] In some embodiments, the floating body is arranged at the inner side of the inner groove below the flow guiding through hole.

[0012] In some embodiments, the inner groove bottom port is fixedly connected with the outer groove bottom through a flexible cylinder, so that the inner groove and the inner cavity of the outer groove are isolated from each other.

[0013] In some embodiments, the inner groove outer side above the floating body is provided with a clamping part capable of being clamped on the outer groove upper edge.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a mud tank with a buffer flow guide groove and a flexible protection strip on the anti-overflow baffle, which can effectively prevent mud overflow, reduce the pollution and cleaning cost of the construction site, and improve the construction safety. The linkage control of the liquid level monitoring device and the mud pump can automatically adjust the mud inflow speed according to the mud liquid level, control the mud amount from the source, and further reduce the overflow risk. The flexible protection strip on the anti-overflow baffle and the wear-resistant coating in the buffer flow guide groove respectively improve the anti-collision ability and service life of the equipment, and the mud discharge port at the bottom of the groove body and the carrying handle on both sides also facilitate the daily use and maintenance operation of the mud tank. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be described in detail below in combination with specific embodiments and drawings. In order to show details and facilitate understanding of its principle, it is not necessarily drawn to scale, and similar reference signs can be used to describe similar parts in different views. The drawings generally show the embodiments discussed herein in an exemplary and non-limiting manner:

[0017] Wherein: Figure 1 is the front view schematic diagram of the mud tank of example one.

[0018] Figure 2 is the top view schematic diagram of the mud tank of example one.

[0019] Figure 3 is Figure 2 A-A section view schematic diagram in.

[0020] Figure 4 is the schematic diagram of example two.

[0021] In the drawings, 1, groove body; 2, baffle; 3, buffer flow guide groove; 31, partition; 4, through hole; 5, liquid level sensor; 6, flexible protection strip, 7, mud discharge port; 8, carrying handle; 9, inner groove; 10, outer groove; 11, floating body; 12, flexible cylinder; 13, flexible pipe; 14, protruding block. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present application, and the technical solutions of the present application are further described in combination with the drawings, but the present application is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, all combinations of the features described in the embodiments are not necessarily required by the solutions of the utility model.

[0023] The principles and structures of the present application will be described in detail below in combination with the drawings and embodiments.

[0024] Embodiment one

[0025] As Figure 1 、 2 , 3, a horizontal directional drilling anti-overflow device, comprising a mud tank, an outwardly inclined baffle 2 is arranged outside the tank opening edge of the mud tank, a wedge-shaped buffer flow guide groove 3 is formed between the baffle 2 and the tank opening edge, a flow guide through hole 4 is formed in the tank opening edge and communicates with the bottom of the buffer flow guide groove 3, so that the mud entering the buffer flow guide groove 3 can flow back into the mud tank from the flow guide through hole 4. A plurality of partitions 31 are arranged along the length direction of the tank opening edge of the buffer flow guide groove 3, and the partitions 31 are supported between the mud tank and the baffle 2. The edge of the baffle 2 is provided with a flexible protection strip. The inclination angle of the baffle relative to the tank opening edge is 10°-30°.

[0026] Specifically, the tank body 1 of the mud tank serves as the main structure for containing mud, and a baffle 2 is installed on the top opening edge thereof. The baffle is inclined inwardly by an angle a (10°-30°), so that when the mud has a tendency to overflow, it will flow back into the tank body 1 along the inclined surface of the baffle 2. A buffer flow guide groove 3 is arranged on the inner side of the baffle 2, the bottom of the buffer flow guide groove 3 communicates with the inside of the tank body 1 through the through hole 4, and the bottom surface is inclined, so that the mud flowing into the buffer flow guide groove 3 can flow back into the tank body 1 smoothly under the action of gravity, playing a role of secondary anti-overflow and flow guide.

[0027] A liquid level sensor 5 for detecting the liquid level height of the mud is arranged on the inner wall of the mud tank, and a liquid level monitoring device is installed inside the tank body 1 near the top. The liquid level sensor 5 monitors the liquid level height of the mud in real time and transmits signals to the controller. When the liquid level exceeds the preset height, the controller controls the control system of the mud pump to automatically reduce the working power of the mud pump, thereby reducing the speed of the mud flowing into the tank body 1, controlling the liquid level of the mud from the source and preventing overflow.

[0028] The top edge of the baffle 2 is fitted with a flexible rubber protective strip 6 to prevent damage upon collision with other objects. The inner wall of the buffer guide channel 3 is coated with a ceramic wear-resistant coating to enhance its wear resistance. The mud discharge port 7 at the bottom of the tank 1 facilitates the discharge of mud, and the valve controls the timing and flow rate of the discharge. The handling handles 8 on both sides of the tank 1 make it easy to move the mud tank on the construction site.

[0029] During horizontal directional drilling, drilling mud flows into the mud tank of this invention through pipelines. As the mud level rises, a level monitoring device monitors it in real time. If the level approaches or exceeds a preset height, the mud pump automatically adjusts its power to reduce mud input. If a small amount of mud overflows onto the baffle 2, it flows down the inclined surface into the buffer guide channel 3 and eventually back into the tank 1, effectively preventing mud from overflowing outside the tank 1, maintaining the cleanliness and safety of the construction site, and ensuring the smooth progress of the construction.

[0030] Example 2

[0031] like Figure 4 As shown, unlike the above embodiments, the mud tank in this embodiment includes an inner tank 9 and an outer tank 10. The inner tank 9 slides vertically within the outer tank 10. A float 11 is provided on the inner tank 9, allowing the inner tank 9 to rise and fall under the buoyancy of the mud, thereby increasing the height of the rim of the mud tank with the height of the mud, thus preventing overflow. In this embodiment, the baffle 2 can be replaced by a slope provided on the edge.

[0032] The float 11 can be, for example, a cavity located inside the inner tank 9 below the guide hole 4. When the mud rises to the cavity, the buoyancy causes the cavity to float, thereby driving the inner tank 9 to rise and preventing overflow.

[0033] The bottom port of the inner tank 9 is fixedly connected to the bottom of the outer tank 10 via a flexible cylinder 12. The flexible cylinder 12 can freely extend and retract, facilitating the vertical movement of the inner tank 9. This isolates the inner tank 9 from the inner cavity of the outer tank 10, allowing the inner tank 9 to move vertically relative to the outer tank 10 while preventing mud from entering between the two tanks. A mud discharge port 7 can be formed on the flexible cylinder 12, connected to a flexible pipe 13 for mud discharge. The mud discharge port 7 can also deform, thus not affecting the raising and lowering of the inner tank 9. When mud discharge is needed, the inner tank 9 is manually raised, and then the mud discharge pipe is opened.

[0034] Of course, rollers or other guiding mechanisms can also be set between the inner groove 9 and the outer groove 10 to facilitate smoother movement of the inner groove 9 relative to the outer groove 10.

[0035] The inner groove 9 is provided with a clamping part on the outside of the floating body 11, which can be clamped on the upper edge of the outer groove 10. In this embodiment, the clamping part is a protruding block 14 provided on the outer sidewall of the inner groove 9. The clamping part can stop the inner groove 9 from descending to a certain height, so as to avoid excessive extrusion of the flexible part.

[0036] Of course, the inner groove can also be a cylinder with an open lower end, but in this case, the inner groove and the outer groove need to be closely matched to avoid mud flowing out from the gap between the inner groove and the outer groove.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0038] Although some terms are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any interpretation of them as any kind of additional limitation is contrary to the spirit of the present application. The order of actions, steps, etc. in the devices and methods shown in the specification and drawings can be implemented in any order, as long as there is no specific order limitation, and as long as the output of the previous processing is not used in the subsequent processing. The use of similar ordinal terms (for example, "first", "then", "second", "again", "then" and the like) for the convenience of description does not mean that they must be implemented in such an order.

Claims

1. A horizontal directional drilling spill prevention device comprising a mud tank, characterized in that, The mud tank is provided with an outwardly inclined baffle outside the notch edge of the mud tank, a wedge-shaped buffer flow guide groove is formed between the baffle and the notch edge, and a flow guide through hole is formed in the notch edge and communicates with the bottom of the buffer flow guide groove, so that the mud entering the buffer flow guide groove can flow back into the mud tank from the flow guide through hole.

2. The horizontal directional drilling spill prevention apparatus of claim 1, wherein, A plurality of partitions are arranged along the length direction of the notch edge in the buffer flow guide groove, and the partitions are supported between the mud tank and the baffle.

3. The horizontal directional drilling spill prevention apparatus of claim 1, wherein, A flexible protection strip is arranged on the edge of the baffle.

4. The horizontal directional drilling spill prevention apparatus of claim 1, wherein, The inclination angle of the baffle relative to the notch edge is 10°-30°.

5. The horizontal directional drilling spill prevention apparatus of claim 1, wherein, A liquid level sensor for detecting the liquid level of the mud is arranged on the inner wall of the mud tank.

6. The horizontal directional drilling spill prevention apparatus of claim 1, wherein, The mud tank comprises an inner tank and an outer tank, the inner tank is sleeved in the outer tank and slides up and down, a float is arranged on the inner tank, and the inner tank can rise and fall under the action of the buoyancy of the mud.

7. The horizontal directional drilling spill prevention apparatus of claim 6, wherein, The inner tank is a cylinder with an open lower end.

8. The horizontal directional drilling spill prevention apparatus of claim 6, wherein, The float is arranged on the inner side of the inner tank below the flow guide through hole.

9. The horizontal directional drilling spill prevention apparatus of claim 6, wherein, The bottom port of the inner tank is fixedly connected with the bottom of the outer tank through a flexible cylinder, so that the inner tank and the inner cavity of the outer tank are isolated from each other.

10. The horizontal directional drilling spill prevention apparatus of claim 6, wherein, A clamping part capable of being clamped on the upper edge of the outer tank is arranged on the outer side of the inner tank above the float.

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