A pre-mixed abrasive jet high-pressure tank sand low-pressure backflow fluidization composite accelerating device

Abstract

The application discloses a front-mixed abrasive jet high-pressure tank sand low-pressure backflow fluidization composite accelerating device, which comprises a front-mixed abrasive jet generating device, a wet sand screening tank and a tank sand device, a left vertical wall is arranged on the left side of the wet sand screening tank, an overflow interface is arranged on the left vertical wall, right inclined walls are arranged on the right side of the wet sand screening tank respectively, wave flow-guiding fins are arranged on the inner sides of the right inclined walls, the tank sand device comprises an upper abrasive tank, a high-pressure tank sand pipeline and a low-pressure backflow pipeline, and a mortar pump is installed on the high-pressure tank sand pipeline. The water at the overflow position of the wet sand screening tank can be introduced into the flushing gap, the abrasive or low-pressure water backflowing in the abrasive tank can be introduced into the flushing gap and the abrasive fluidization in the wet sand screening tank can be intensified, the abrasive is difficult to deposit due to the height of the abrasive tank, the abrasive enters the wet sand screening tank through the low-pressure backflow pipeline too early, and the abrasive tank cannot be filled with the abrasive.

Description

Technical Field

[0001] This invention relates to the field of water jet mechanical equipment design technology, and in particular to a pre-mixed abrasive jet high-pressure tank sand low-pressure reflux fluidization composite acceleration device. Background Technology

[0002] A water jet is a high-speed stream of water of various shapes formed by flowing out of a nozzle. The velocity of the jet depends on the pressure drop across the nozzle exit section. Water jetting is one of the simplest forms of energy conversion and application. Typically, a power-driven pump completes a suction and discharge process, pumping a certain amount of water into a high-pressure pipeline, allowing it to reach the nozzle with a certain amount of energy. Since the nozzle orifice diameter is required to be much smaller than the high-pressure pipeline diameter, the water reaching the nozzle must be accelerated to flow out of the nozzle orifice. Thus, the water accelerated and condensed through the nozzle orifice forms a jet.

[0003] However, existing pre-mixed abrasive jet high-pressure tank sand low-pressure reflux fluidization composite acceleration devices cannot either accelerate the fluidization of abrasive in the wet screening box by flushing the low-pressure water flowing out of the reflux pipe downwards along the right inclined wall, nor can they introduce the overflow water in the reflux interface between the open plate and the right inclined wall and flow out through the inside of the closing pressure plate. Some pre-mixed abrasive jet high-pressure tank sand low-pressure reflux fluidization composite acceleration devices cannot introduce the water from the overflow of the wet screening box into the scouring gap, nor can they introduce the abrasive or low-pressure water returning from the abrasive tank into the scouring gap and intensify the fluidization of abrasive in the wet screening box. The current pre-mixed abrasive jet high-pressure tank sand low-pressure reflux fluidized bed composite acceleration device fails to achieve separate input and output of abrasive and water, and also cannot accelerate the fluidization of abrasive within the wet sand screening box by transferring sand from the high-pressure tank to the low-pressure reflux. Furthermore, some pre-mixed abrasive jet high-pressure tank sand low-pressure reflux fluidized bed composite acceleration devices cannot allow the abrasive-water mixture input from the high-pressure tank sand pipeline to enter the upper abrasive tank. This unavoidable issue stems from the height of the abrasive tank itself, hindering abrasive sedimentation and causing premature entry of abrasive into the wet sand screening box via the low-pressure reflux pipeline, thus failing to meet practical requirements. Therefore, it is necessary to provide a pre-mixed abrasive jet high-pressure tank sand low-pressure reflux fluidized bed composite acceleration device that is simple in structure, quick and convenient to operate, safe, and efficient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a pre-mixed abrasive jet high-pressure tank sand low-pressure reflux fluidized composite acceleration device that is simple in structure, quick and convenient to operate, safe and efficient.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A pre-mixed abrasive jet high-pressure sand tank low-pressure reflux fluidized composite acceleration device, comprising a pre-mixed abrasive jet generator, the pre-mixed abrasive jet generator including a water pump, further comprising a wet sand screening box and a sand tank device, the wet sand screening box having a left vertical wall on its left side, an overflow port on the left vertical wall, and a right inclined wall on its right side, the inner side of the right inclined wall having a corrugated guide vane, the lower end of the corrugated guide vane having a constricting pressure plate, a reflux port between the constricting pressure plate and the inner side of the right inclined wall, and the upper end of the corrugated guide vane having a bend. The device comprises a curved constriction plate and an open plate, with the curved constriction plate located on the lower side of the open plate. A return port is installed on the upper side of the corrugated guide plate, which is connected to an overflow port via a pipe. Both the return port and the corrugated guide plate have scouring gaps between them and the right inclined wall. A four-way valve is installed at the bottom of the wet sand screening box. The sand-collecting device includes an upper abrasive tank, a high-pressure sand-collecting pipeline, and a low-pressure return pipeline. A slurry pump is installed on the high-pressure sand-collecting pipeline. A connecting seat is installed at the lower end of the upper abrasive tank, and a lower abrasive tank is installed at the lower end of the connecting seat. A sand-collecting seat is installed at the upper end of the upper abrasive tank, and the sand-collecting seat is connected to the four-way valve via the low-pressure return pipeline.

[0006] The symmetry line of the right inclined wall forms an acute angle with the symmetry line of the right inclined wall. High-pressure shut-off valves are installed in both the high-pressure tank sand pipeline and the low-pressure return pipeline. An inclined screener is installed in the wet sand screening box. A water supply connector and an excess water output connector are installed at the right end of the wet sand screening box. The excess water output connector is located above the water supply connector and the overflow port. The water supply connector and the overflow port are both located above the top of the inclined screener.

[0007] The four-way valve is equipped with a horizontal water conveying channel, a vertical sand inlet channel, a vertical water outlet channel, and a vertical excess water return channel. The left end of the horizontal water conveying channel is connected to the high-pressure tank sand pipeline, and the right end of the horizontal water conveying channel is connected to the water pump. The sand tank seat is connected to the wet sand screening box through the high-pressure tank sand pipeline and the vertical sand inlet channel. The vertical water outlet channel is connected to the water conveying connector through a pipe, and the vertical excess water return channel is connected to the excess water outlet connector through a pipe.

[0008] When using it on site, the operator first pours the abrasive into the wet sand screening box, connects the output pipe of the water pump to the right end of the four-way valve, and the low-pressure water enters the water supply connector through the vertical output water channel, so that the low-pressure water level is maintained below the overflow interface. The liquid level of the low-pressure water on the upper side always submerges the inclined screen. When the abrasive enters the inclined screen in the wet sand screening box, the abrasive is also submerged.

[0009] Secondly, the operator starts the vibrator on the side of the inclined screen and makes the inclined screen perform screening. The abrasive in the inclined screen enters the bottom of the wet sand screening box after screening. The excess low-pressure water enters the return port through the overflow port. Under the action of gravity, the excess low-pressure water enters the inner side of the open plate along the flushing gap on the upper side of the right inclined wall. The low-pressure water flows out through the gap between the closing plate and the right inclined wall and accelerates the fluidization of the abrasive in the wet sand screening box. After fluidization, the abrasive enters the vertical sand inlet channel at the bottom of the wet sand screening box. If the water volume exceeds the upper side of the inclined screen, the water enters the excess water output connector and enters the vertical excess water return channel through the pipe and is output through the horizontal water conveying channel.

[0010] Next, the operator opens the vertical sand inlet channel, allowing the fluidized abrasive from the wet sand screening box to enter the horizontal water conveyance channel. The abrasive mixes with water in the horizontal water conveyance channel and is then pumped into the upper abrasive tank via a slurry pump on the high-pressure tank sand pipeline. The heavier abrasive settles first and quickly settles into the lower abrasive tank. Excess water in the upper abrasive tank enters the gap between the corrugated guide vane and the right-side inclined wall through the low-pressure return pipe. Under the action of the lower end of the corrugated guide vane, the water accelerates the flushing of the abrasive in the sand screening box, accelerating its fluidization and allowing it to better enter the vertical sand inlet channel.

[0011] Finally, the operator sequentially closes the abrasive valve at the bottom of the sand-collecting device and the control in the pre-mixing abrasive jet generator. After the abrasive in the wet sand-screening box is screened, the upper and lower abrasive tanks in the sand-collecting device are filled with abrasive. After use, the output flow of the water pump is reduced until the water pump is turned off. According to the next operation time, the equipment is regularly maintained and awaits the next operation.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: By setting up wave guide plates, constricting pressure plates, curved constricting plates, and open plates, this invention can not only flush the low-pressure water flowing out of the return pipe port downwards along the right inclined wall to accelerate the fluidization of abrasive in the wet sand screening box, but also introduce the overflow water in the return interface into the space between the open plate and the right inclined wall and flow out through the inner side of the constricting pressure plate. By setting up the return pipe port, return interface, overflow interface, and flushing gap, it can not only introduce the water overflowing from the wet sand screening box into the flushing gap, but also introduce the abrasive or low-pressure water returning from the abrasive tank into the flushing gap and intensify the fluidization of abrasive in the wet sand screening box. By setting up a four-way valve, it can realize the separate input and output of abrasive and water. The high-pressure tank sand pipeline, low-pressure return pipeline, and slurry pump enable the high-pressure tank sand and low-pressure return to the wet sand screening box to accelerate the fluidization of abrasives in the wet sand screening box. By setting up an upper abrasive tank, connecting seat, lower abrasive tank, and tank sand seat, the abrasive and water mixture input from the high-pressure tank sand pipeline can enter the upper abrasive tank. The heavier abrasives can quickly enter the lower abrasive tank from the upper abrasive tank through the connecting seat to settle, avoiding the abrasive's difficulty in settling due to the height of the abrasive tank itself, which would cause the abrasive to enter the wet sand screening box too early through the low-pressure return pipeline, resulting in the abrasive tank not being filled with abrasives and reducing the abrasive filling efficiency. The structure is simple, easy to operate, economical and practical. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention;

[0014] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0015] Figure 3 for Figure 1 A schematic diagram of the structure of a four-way valve.

[0016] In the diagram: 1. Pre-mixing abrasive jet generator; 11. Water pump; 2. Wet sand screening box; 21. Left vertical wall; 211. Overflow port; 22. Right inclined wall; 23. Four-way valve; 231. Horizontal water conveying channel; 232. Vertical sand inlet channel; 233. Vertical water outlet channel; 234. Vertical excess water return channel; 24. Inclined screener; 25. Water conveying connector; 26. Excess water conveying... 3. Outlet connector; 31. Sand tank device; 31. Upper abrasive tank; 311. Connecting seat; 3111. Lower abrasive tank; 312. Sand tank seat; 32. High-pressure sand tank pipeline; 321. Mortar pump; 33. Low-pressure return pipeline; 4. Corrugated guide plate; 41. Closing plate; 42. Bending closing plate; 43. Opening plate; 44. Return interface; 5. Return pipe port; 6. Flushing gap; 7. High-pressure shut-off valve. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific embodiments and illustrations.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, the pre-mixed abrasive jet high-pressure sand tank low-pressure reflux fluidized composite acceleration device includes a pre-mixed abrasive jet generator 1, which includes a water pump 11, a wet sand screening box 2, and a sand tank device 3. The wet sand screening box 2 has a left vertical wall 21 on its left side, with an overflow port 211 on the left vertical wall 21. The wet sand screening box 2 has a right inclined wall 22 on its right side, with a corrugated guide vane 4 on the inner side of the right inclined wall 22. A constricting plate 41 is located at the lower end of the corrugated guide vane 4, and a reflux port 5 is located between the constricting plate 41 and the inner side of the right inclined wall 22. The corrugated guide vane 4 has a curved constricting plate 42 and an open plate 43 at its upper end. The curved constricting plate 42 is located at the open plate 43. A return port 44 is installed on the lower side of the mouthpiece 43 and the upper side of the corrugated guide plate 4. The return port 44 is connected to the overflow port 211 through a pipe. A flushing gap 6 is provided between the return port 44 and the corrugated guide plate 4 and the right inclined wall 22. A four-way valve 23 is installed at the bottom of the wet sand screening box 2. The sand tank device 3 includes an upper abrasive tank 31, a high-pressure sand tank pipeline 32 and a low-pressure return pipeline 33. A slurry pump 321 is installed on the high-pressure sand tank pipeline 32. A connecting seat 311 is installed at the lower end of the upper abrasive tank 31. A lower abrasive tank 3111 is installed at the lower end of the connecting seat 311. A sand tank seat 312 is installed at the upper end of the upper abrasive tank 31. The sand tank seat 312 is connected to the four-way valve 23 through the low-pressure return pipeline 33.

[0019] like Figure 1 and Figure 2 As shown, the symmetry lines of the right inclined wall 22 and the right inclined wall 21 form an acute angle. High-pressure shut-off valves 7 are installed in both the high-pressure tank sand pipeline 32 and the low-pressure return pipeline 33. An inclined screener 24 is installed in the wet sand screening box 2. A water supply connector 25 and an excess water output connector 26 are installed at the right end of the wet sand screening box 2. The excess water output connector 26 is located above the water supply connector 25 and the overflow interface 211. The water supply connector 25 and the overflow interface 211 are both located above the top of the inclined screener 24.

[0020] like Figure 1 and Figure 3As shown, the four-way valve 23 is provided with a horizontal water conveying channel 231, a vertical sand inlet channel 232, a vertical water outlet channel 233, and a vertical excess water return channel 234. The left end of the horizontal water conveying channel 231 is connected to the high-pressure tank sand pipeline 32, and the right end of the horizontal water conveying channel 231 is connected to the water pump 11. The sand tank seat 312 is connected to the wet sand screening box 2 through the high-pressure tank sand pipeline 32 and the vertical sand inlet channel 232. The vertical water outlet channel 233 is connected to the water conveying connector 25 through a pipe. The vertical excess water return channel 234 is connected to the excess water outlet connector 26 through a pipe.

[0021] When using it on site, the operator first pours the abrasive into the wet sand screening box 2, connects the output pipe of the water pump to the right end of the four-way valve 23, and the low-pressure water enters the water supply connector 25 through the vertical output water channel 233, so that the low-pressure water level is maintained below the overflow interface 211 and the liquid level of the low-pressure water on the upper side always submerges the inclined screen 24. When the abrasive enters the inclined screen 24 in the wet sand screening box 2, the abrasive is also in a submerged state.

[0022] Next, the operator starts the vibrator on the side of the inclined screen 24 and makes the inclined screen 24 perform screening. The abrasive in the inclined screen 24 enters the bottom of the wet sand screening box 2 after screening. The excess low-pressure water enters the return port 44 through the overflow port 211. Under the action of gravity, the excess low-pressure water enters the inner side of the open plate 43 along the flushing gap 6 on the upper side of the right inclined wall 22. The low-pressure water flows out through the gap between the closing pressure plate 41 and the right inclined wall 22 and accelerates the fluidization of the abrasive in the wet sand screening box 2. After fluidization, the abrasive enters the vertical sand inlet channel 232 at the bottom of the wet sand screening box 2. If the water volume exceeds the upper side of the inclined screen 24, the water enters the excess water outlet connector 26 and enters the vertical excess water return channel 234 through the pipeline and is output through the horizontal water conveying channel 231.

[0023] Next, the operator opens the vertical sand inlet channel 232, allowing the fluidized abrasive in the wet sand screening box 2 to enter the horizontal water conveying channel 231. The abrasive mixes with the water in the horizontal water conveying channel 231 and is then pumped into the upper abrasive tank 31 via the slurry pump 321 on the high-pressure sand tank pipeline 32. The heavier abrasive settles first and then quickly settles into the lower abrasive tank 3111. Excess water in the upper abrasive tank 31 enters the gap between the corrugated guide plate 4 and the right inclined wall 22 through the low-pressure return pipeline 33 and the return port 5. Under the action of the lower end closing pressure plate 41 of the corrugated guide plate 4, the water accelerates the flushing of the abrasive in the sand screening box 2, accelerating the fluidization of the abrasive and allowing it to enter the vertical sand inlet channel 232 more effectively.

[0024] Finally, the operator sequentially closes the abrasive valve at the lower end of the sand-collecting device 3 and the control in the pre-mixing abrasive jet generator. After the abrasive in the wet sand-screening box 2 has been screened, the upper abrasive tank 31 and the lower abrasive tank 3111 in the sand-collecting device 3 are filled with abrasive. After use, the output flow of the water pump is reduced until the water pump is turned off. According to the next operation time, the equipment is regularly maintained and awaits the next operation.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-mixed abrasive jet high-pressure canister sand low-pressure reflux fluidized bed composite acceleration device, comprising a pre-mixed abrasive jet generator, wherein the pre-mixed abrasive jet generator includes a water pump, characterized in that: It also includes a wet sand screening box and a sand-collecting device. The wet sand screening box has a left vertical wall on its left side, and an overflow port on the left vertical wall. The wet sand screening box has a right inclined wall on its right side, and a corrugated guide vane is provided on the inner side of the right inclined wall. A constricting plate is provided at the lower end of the corrugated guide vane. A return pipe is provided between the constricting plate and the inner side of the right inclined wall. The upper end of the corrugated guide vane has a curved constricting plate and an open plate. The curved constricting plate is located below the open plate. A return port is installed on the upper side of the corrugated guide vane. The return port is connected to the overflow port through a pipe. The return port and the corrugated guide vane are provided with a flushing gap between them and the right inclined wall. A four-way valve is installed at the bottom of the wet sand screening box. The sand tank device includes an upper abrasive tank, a high-pressure sand tank pipeline and a low-pressure return pipeline. A slurry pump is installed on the high-pressure sand tank pipeline. A connecting seat is installed at the lower end of the upper abrasive tank. A lower abrasive tank is installed at the lower end of the connecting seat. A sand tank seat is installed at the upper end of the upper abrasive tank. The sand tank seat is connected to the four-way valve through the low-pressure return pipeline. The symmetry lines of the right inclined wall and the left inclined wall form an acute angle. High-pressure shut-off valves are installed in both the high-pressure tank sand pipeline and the low-pressure return pipeline. An inclined screener is installed in the wet sand screening box. A water supply connector and an excess water output connector are installed at the right end of the wet sand screening box. The excess water output connector is located above the water supply connector and the overflow port. Both the water supply connector and the overflow port are located above the top of the inclined screener.

2. The pre-mixed abrasive jet high-pressure canister sand low-pressure reflux fluidized bed composite acceleration device according to claim 1, characterized in that: The four-way valve is equipped with a horizontal water conveying channel, a vertical sand inlet channel, a vertical water outlet channel, and a vertical excess water return channel. The left end of the horizontal water conveying channel is connected to the high-pressure tank sand pipeline, and the right end of the horizontal water conveying channel is connected to the water pump. The sand tank seat is connected to the wet sand screening box through the high-pressure tank sand pipeline and the vertical sand inlet channel. The vertical water outlet channel is connected to the water conveying connector through a pipe, and the vertical excess water return channel is connected to the excess water outlet connector through a pipe.

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