CN217080478U - Blowout prevention pressure reducing device, heading machine slag tapping system and heading machine - Google Patents
Blowout prevention pressure reducing device, heading machine slag tapping system and heading machine Download PDFInfo
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- CN217080478U CN217080478U CN202220142427.5U CN202220142427U CN217080478U CN 217080478 U CN217080478 U CN 217080478U CN 202220142427 U CN202220142427 U CN 202220142427U CN 217080478 U CN217080478 U CN 217080478U
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Abstract
The utility model belongs to the field of slag soil conveying devices and tunnel excavation equipment, in particular to a blowout prevention pressure reducing device, a heading machine slag discharging system and a heading machine, wherein the heading machine comprises a cutter head, the rear side of the cutter head is provided with a soil bin, the heading machine also comprises a slag discharging system, the slag discharging system comprises a screw conveyer connected with the soil bin, a slag discharging port and a blowout relief port are arranged on a barrel body of the screw conveyer, the slag discharging system also comprises the blowout prevention pressure reducing device, the blowout prevention pressure reducing device comprises a blowout prevention pressure reducing box, a slurry inlet communicated with the blowout relief port of the screw conveyer is arranged on the box wall of the blowout prevention pressure reducing box, a slurry discharging port is arranged at the bottom of the box wall of the blowout prevention pressure reducing box and is used for supplying slag slurry in the blowout prevention pressure reducing box to flow out, a flushing nozzle is also arranged on the box wall of the blowout prevention pressure reducing box and is used for flushing and cleaning the interior of the blowout prevention pressure reducing box, the scheme can prevent the slag slurry from splashing and polluting equipment and construction environment, and can operate continuously and reliably.
Description
Technical Field
The utility model belongs to dregs conveyor and tunnel tunnelling equipment field especially relates to a prevent spouting pressure relief device, entry driving machine slag tapping system and entry driving machine.
Background
In the excavation construction of the tunnel, if the constructed stratum is a soft soil stratum, an earth pressure shield machine is adopted for excavation, the earth pressure shield machine conveys the muck in the earth bin to the belt conveyor through the screw conveyor, and then the belt conveyor conveys the muck to the muck hopper car to be transported out of the tunnel. Partial long distance section project exists local interval big buried depth high pressure-bearing rich water's soft soil stratum, when the construction in this kind of stratum, screw conveyer can not take the area dregs decompression to the ordinary pressure state through its self helical structure's soil plug effect, screw conveyer export whitewashing pressure release state often appears, can not live the continuous slag tap of soil storehouse pressure, and the whitewashing can be spouted to in equipment and the tunnel, pollute the construction environment, consequently, need take the measure to prevent the condition that screw conveyer export whitewashing pressure release appears.
For example, the specification of the chinese patent application publication No. CN113309532A, the application publication No. 2021, 08 and 27, describes a method for preventing slurry spraying and pressure relief at the outlet of a screw conveyor in the background art thereof, and specifically describes one of the methods for improving the muck in a soil bin to form a high standard "soil plug effect" by a power-assisted screw conveyor and balance the soil and water pressure on the face of a palm, but the method has the technical problems of high implementation cost and low efficiency, and at the same time, the patent also describes a method for connecting a pipeline at the tail of the screw conveyor to remove the slag by using a pipeline, and similarly to the method, the chinese utility model patent publication No. CN204783040U, the publication No. 2015, 11 and 18, discloses a gush-proof double screw conveyor, specifically, a screw conveyor (secondary screw conveyor) is connected to the outlet of the screw conveyor (primary screw conveyor) provided for the soil bin The anti-blowout and pressure stabilization can be realized by increasing the conveying distance, based on the working principle of the anti-blowout and pressure stabilization device, because the length of the conveying path of the double-screw conveyor is a certain value, the anti-blowout and pressure stabilization can be realized only in a soil layer with specific water content, if the water content in the stratum becomes large in the tunneling process, the anti-blowout and pressure stabilization can not be realized reliably, the technical problem of unreliable working performance exists, besides, the two-stage screw conveyor is butted at the outlet of the one-stage screw conveyor, and when the stratum with small water content is constructed, the normal deslagging of the screw conveyor is easily influenced.
Chinese utility model patent that the grant bulletin number is CN210217745U, the grant bulletin date is 2020, 03, 31 discloses a screw conveyer prevents spouting device, the device sets up the gushing relief vent that is used for discharging the sediment thick liquid on screw conveyer's shell ring (barrel), the gushing relief vent is independent for screw conveyer's slag notch for the discharge outlet of screw conveyer, make the discharge of sediment thick liquid not pass through the slag notch, can not cause the influence to the row's of screw conveyer in the little stratum construction of water content row sediment, but this patent document does not just prevent spouting the processing and make concrete explanation to gushing the slag thick liquid of relief vent exhaust.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a blowout prevention pressure reducing device which is matched with a screw conveyor with a barrel body provided with a blowout release port, and solves the technical problem that slag slurry splashing pollutes equipment and construction environment; an object of the utility model is also to provide an use above-mentioned entry driving machine slag output system and entry driving machine of preventing spouting pressure relief device.
In order to achieve the purpose, the utility model provides a prevent spouting pressure relief device's technical scheme is:
the utility model provides a prevent spouting pressure relief device, includes prevents spouting the pressure relief tank, prevent spouting on the tank wall of pressure relief tank offer be used for with the screw conveyer barrel on spout the grout inlet that gushes the relief port intercommunication for the sediment thick liquid can spout in preventing spouting the pressure relief tank through advancing the grout inlet, prevent spouting the tank wall bottom of pressure relief tank and seted up the mud discharging mouth for the confession prevents spouting the sediment thick liquid outflow of pressure relief tank, still be provided with the washing terminals on preventing spouting the tank wall of pressure relief tank, be used for to prevent spouting the pressure relief tank in spout fluid with to preventing spouting the pressure relief tank inside wash clean.
The beneficial effects are that: when the anti-spraying decompression box is used, the slurry inlet of the anti-spraying decompression box is communicated with the gushing release port of the screw conveyor, high-pressure slurry is sprayed into the anti-spraying decompression box through the slurry inlet and is decompressed in the anti-spraying decompression box, meanwhile, the slurry is sprayed into the anti-spraying decompression box, under the restraint of the wall of the anti-spraying decompression box, the slurry cannot splash onto other equipment and into a tunnel, the blowout of the slurry is realized, when the adhesion of slag and soil inside the anti-spraying decompression box is hardened, high-speed fluid is sprayed into the anti-spraying decompression box through the flushing nozzle, the inside of the anti-spraying decompression box is flushed and cleaned, and the reliable and continuous work of the anti-spraying decompression device is ensured.
As a further improvement, an anti-impact grate plate is arranged in the blowout prevention decompression box, and the anti-impact grate plate is arranged right opposite to the pulp inlet.
The beneficial effects are that: the anti-impact grate plate is arranged at the slurry inlet, the slurry is sprayed onto the anti-impact grate plate through the slurry inlet, the slurry is prevented from being sprayed onto the wall of the anti-spray pressure reduction box, the wall of the anti-spray pressure reduction box is protected, the durability of the anti-spray pressure reduction device is improved, and meanwhile, the anti-impact grate plate is provided with the hole structure, so that the hardening speed of the slurry on the anti-impact grate plate can be reduced.
As a further improvement, the slurry inlet is arranged on the side tank wall of the blowout-preventing decompression tank, and the impact-resistant grate plate is arranged above the slurry outlet.
The beneficial effects are that: the anti-impact grate plate is arranged above the pulp discharge port, the pulp sprayed into the anti-spray decompression box through the pulp inlet impacts the anti-impact grate plate, the anti-impact grate plate has a filtering effect on the pulp, large-particle solid particles are enabled to directly fall into the pulp discharge port after impacting on the anti-impact grate plate, and the pulp sprayed to one side, back to the pulp inlet, of the anti-impact grate plate through the hole structure on the anti-impact grate plate can also flow back into the pulp discharge port based on the arrangement of the anti-impact grate plate above the pulp discharge port, namely, when the anti-impact grate plate is utilized to block and buffer on the path of pulp spraying, all the pulp can be ensured to flow into the pulp discharge port.
As a further improvement, at least two flushing nozzles are arranged towards the pulp outlet, and the flushing nozzles are defined as pulp outlet flushing nozzles which are respectively arranged on two sides of the anti-impact grate plate.
The beneficial effects are that: the flushing nozzles facing the pulp discharging port are arranged on the two sides of the impact-resistant grate plate, so that the pulp discharging port can be flushed and cleaned, and the smooth discharge of pulp influenced by hardened slag at the pulp discharging port is avoided.
As a further improvement, the flushing nozzle is arranged opposite to the anti-impact grate plate.
The beneficial effects are that: the flushing nozzle is arranged right opposite to the impact-resistant grating plate, so that the impact-resistant grating plate can be directly and efficiently flushed and cleaned.
As a further improvement, the flushing nozzle which is arranged opposite to the impact-resistant grate plate is defined as the impact-resistant grate plate flushing nozzle, and the impact-resistant grate plate flushing nozzle and the pulp inlet are respectively arranged at two sides of the impact-resistant grate plate.
The beneficial effects are that: the impact-resistant grate plate is flushed in the direction opposite to the slag pulp spraying direction, so that solid particles blocked in the pore structure of the impact-resistant grate plate can be effectively flushed away.
As a further improvement, the blowout prevention pressure reducing device further comprises a screening device, and the blowout prevention pressure reducing box is located above the screening device and fixed on a rack of the screening device, so that slurry discharged from the slurry discharge port can flow onto the screening device to be screened for solid and liquid.
The beneficial effects are that: the screening device is arranged to screen the slurry discharged from the slurry discharge port, so that solid-liquid separation is realized, and the belt conveyor is convenient to convey the residue soil.
As a further improvement, the blowout prevention pressure reducing device further comprises at least two connecting pipes connected with the slurry inlet, the other ends of the connecting pipes are used for being communicated with a gushing release opening formed in the barrel of the screw conveyor, and a valve used for controlling the on-off of the pipe body is arranged on the pipe body of at least one connecting pipe.
The beneficial effects are that: set up two piece at least connecting pipes, can select the connecting pipe of suitable quantity to open according to the sediment thick liquid volume adaptability of reality, when the sediment thick liquid volume is less, through closing the valve in order to open the connecting pipe of less quantity, keep the pressure in the soil storehouse, when the sediment thick liquid volume is great, can open the connecting pipe of more quantity to ensure can in time get rid of the sediment thick liquid, avoid soil storehouse pressure too big.
As a further improvement, a pressurizing and/or water adding boosting valve is arranged on the pipe body of each connecting pipe and is used for pressurizing and/or injecting water into the pipe body to boost the flow of the slag slurry in the pipe body.
The beneficial effects are that: when the problem that the slurry flows unsmoothly appears in the pipe body, the pressurization or water adding boosting valve can be used for pressurizing or adding water into the pipe body for boosting, so that the smooth flowing of the slurry in the pipe body is ensured.
In order to realize the purpose, the utility model provides a tunneller slag tapping system's technical scheme is:
the utility model provides a tunneller slag tapping system, is including being used for being connected with the soil bin with the screw conveyer of the outside transport of dregs in the soil bin, set up relatively independent slag notch and gush the relief opening on screw conveyer's the barrel, tunneller slag tapping system still includes prevents spouting pressure relief apparatus, prevents spouting pressure relief apparatus including preventing spouting the decompression case, prevent spouting the grout inlet of offering the gushing relief opening intercommunication that is used for with the screw conveyer barrel on the tank wall of decompression case for the sediment thick liquid can spout in preventing spouting the decompression case through advancing the thick liquid mouth, prevent spouting the discharge port has been offered to the tank wall bottom of decompression case for supply prevent spouting the sediment thick liquid outflow of decompression incasement, still be provided with the flushing blow head on preventing the tank wall of decompression case for to preventing spouting the decompression incasement fluid with to preventing the decompression incasement that spouts the decompression case inside and wash cleanly.
The beneficial effects are that: when the anti-spraying decompression box is used, the slurry inlet of the anti-spraying decompression box is communicated with the gushing release port of the screw conveyor, high-pressure slurry is sprayed into the anti-spraying decompression box through the slurry inlet and is decompressed in the anti-spraying decompression box, meanwhile, the slurry is sprayed into the anti-spraying decompression box, under the restraint of the wall of the anti-spraying decompression box, the slurry cannot splash onto other equipment and into a tunnel, the blowout of the slurry is realized, when the adhesion of slag and soil inside the anti-spraying decompression box is hardened, high-speed fluid is sprayed into the anti-spraying decompression box through the flushing nozzle, the inside of the anti-spraying decompression box is flushed and cleaned, and the reliable and continuous work of the anti-spraying decompression device is ensured.
As a further improvement, an anti-impact grate plate is arranged in the blowout prevention decompression box, and the anti-impact grate plate is arranged right opposite to the pulp inlet.
The beneficial effects are that: the anti-impact grate plate is arranged at the slurry inlet, the slurry is sprayed onto the anti-impact grate plate through the slurry inlet, the slurry is prevented from being sprayed onto the wall of the anti-spray pressure reduction box, the wall of the anti-spray pressure reduction box is protected, the durability of the anti-spray pressure reduction device is improved, and meanwhile, the anti-impact grate plate is provided with the hole structure, so that the hardening speed of the slurry on the anti-impact grate plate can be reduced.
As a further improvement, the slurry inlet is arranged on the side tank wall of the blowout-preventing decompression tank, and the impact-resistant grate plate is arranged above the slurry outlet.
The beneficial effects are that: the grate plate that will resist impact sets up in row's thick liquid mouth top, spout the sediment thick liquid that prevents spouting in the decompression case through advancing the thick liquid mouth and strike on the grate plate that resists impact, the grate plate that resists impact has the filter effect to the sediment thick liquid, make the solid particle of large granule strike on the grate plate that resists impact later speed down directly fall to in the row thick liquid mouth, to the hole structure that spouts to the grate plate that resists impact one side of entering the thick liquid mouth dorsad that resists impact, based on the setting of the grate plate above row thick liquid mouth that resists impact, make this part sediment thick liquid also can flow back to in the row thick liquid mouth, promptly, when utilizing the grate plate that resists impact to block the buffering on the route that the sediment thick liquid sprays, ensure that all sediment thick liquids all can flow to in the row thick liquid mouth.
As a further improvement, at least two flushing nozzles are arranged towards the pulp outlet, and the flushing nozzles are defined as pulp outlet flushing nozzles which are respectively arranged on two sides of the anti-impact grate plate.
The beneficial effects are that: the flushing nozzles facing the pulp discharging port are arranged on the two sides of the impact-resistant grate plate, so that the pulp discharging port can be flushed and cleaned, and the smooth discharge of pulp influenced by hardened slag at the pulp discharging port is avoided.
As a further improvement, the flushing nozzle is arranged opposite to the anti-impact grate plate.
The beneficial effects are that: the flushing nozzle is arranged right opposite to the impact-resistant grating plate, so that the impact-resistant grating plate can be directly and efficiently flushed and cleaned.
As a further improvement, the flushing nozzle which is arranged opposite to the impact-resistant grate plate is defined as the impact-resistant grate plate flushing nozzle, and the impact-resistant grate plate flushing nozzle and the pulp inlet are respectively arranged at two sides of the impact-resistant grate plate.
The beneficial effects are that: the impact-resistant grate plate is flushed in the direction opposite to the slag pulp spraying direction, so that solid particles blocked in the pore structure of the impact-resistant grate plate can be effectively flushed away.
As a further improvement, the blowout prevention pressure reducing device further comprises a screening device, and the blowout prevention pressure reducing box is located above the screening device and fixed on a rack of the screening device, so that slurry discharged from the slurry discharge port can flow onto the screening device to be screened for solid and liquid.
The beneficial effects are that: the screening device is arranged to screen the slurry discharged from the slurry discharge port, so that solid-liquid separation is realized, and the belt conveyor is convenient to convey the residue soil.
As a further improvement, the blowout prevention pressure reducing device further comprises at least two connecting pipes connected with the slurry inlet, the other ends of the connecting pipes are used for being communicated with a gushing release opening formed in the barrel of the screw conveyor, and a valve used for controlling the on-off of the pipe body is arranged on the pipe body of at least one connecting pipe.
The beneficial effects are that: set up two piece at least connecting pipes, can select the connecting pipe of suitable quantity to open according to the sediment thick liquid volume adaptability of reality, when the sediment thick liquid volume is less, through closing the valve in order to open the connecting pipe of less quantity, keep the pressure in the soil storehouse, when the sediment thick liquid volume is great, can open the connecting pipe of more quantity to ensure can in time get rid of the sediment thick liquid, avoid soil storehouse pressure too big.
As a further improvement, a pressurizing and/or water adding boosting valve is arranged on the pipe body of each connecting pipe and is used for pressurizing and/or injecting water into the pipe body to boost the flow of the slag slurry in the pipe body.
The beneficial effects are that: when the problem that the slurry flows unsmoothly occurs in the pipe body, the pressurization or water adding boosting valve can be used for pressurizing or adding water to the pipe body for boosting, so that the slurry can flow smoothly in the pipe body.
In order to achieve the above object, the utility model provides a heading machine's technical scheme is:
a heading machine comprises a cutter head, a soil bin is arranged at the rear side of the cutter head, the heading machine further comprises a slag discharging system, the slag discharging system comprises a spiral conveyor which is connected with the soil bin to convey slag soil in the soil bin outwards, the barrel body of the screw conveyor is provided with a slag outlet and a gushing release outlet which are relatively independent, the slag outlet system also comprises a blowout prevention pressure reducing device, the blowout prevention pressure reducing device comprises a blowout prevention pressure reducing box, the wall of the anti-spraying decompression box is provided with a slurry inlet which is communicated with a gushing release port arranged on a barrel of the screw conveyor, so that the slurry can be sprayed into the blowout prevention pressure reduction box through the slurry inlet, the bottom of the box wall of the blowout prevention pressure reduction box is provided with a slurry discharge port, the spraying prevention pressure reducing box is used for allowing slag slurry in the spraying prevention pressure reducing box to flow out, and a washing spray head is further arranged on the box wall of the spraying prevention pressure reducing box and used for spraying fluid into the spraying prevention pressure reducing box so as to wash and clean the interior of the spraying prevention pressure reducing box.
The beneficial effects are that: when the anti-spraying decompression box is used, the slurry inlet of the anti-spraying decompression box is communicated with the gushing release port of the screw conveyor, high-pressure slurry is sprayed into the anti-spraying decompression box through the slurry inlet and is decompressed in the anti-spraying decompression box, meanwhile, the slurry is sprayed into the anti-spraying decompression box, under the restraint of the wall of the anti-spraying decompression box, the slurry cannot splash onto other equipment and into a tunnel, the blowout of the slurry is realized, when the adhesion of slag and soil inside the anti-spraying decompression box is hardened, high-speed fluid is sprayed into the anti-spraying decompression box through the flushing nozzle, the inside of the anti-spraying decompression box is flushed and cleaned, and the reliable and continuous work of the anti-spraying decompression device is ensured.
As a further improvement, an anti-impact grate plate is arranged in the blowout prevention decompression box, and the anti-impact grate plate is arranged right opposite to the pulp inlet.
The beneficial effects are that: the anti-impact grate plate is arranged at the slurry inlet, the slurry is sprayed onto the anti-impact grate plate through the slurry inlet, the slurry is prevented from being sprayed onto the wall of the anti-spray pressure reduction box, the wall of the anti-spray pressure reduction box is protected, the durability of the anti-spray pressure reduction device is improved, and meanwhile, the anti-impact grate plate is provided with the hole structure, so that the hardening speed of the slurry on the anti-impact grate plate can be reduced.
As a further improvement, the slurry inlet is arranged on the side tank wall of the blowout prevention decompression tank, and the impact-resistant grate plate is arranged above the slurry outlet.
The beneficial effects are that: the anti-impact grate plate is arranged above the pulp discharge port, the pulp sprayed into the anti-spray decompression box through the pulp inlet impacts the anti-impact grate plate, the anti-impact grate plate has a filtering effect on the pulp, large-particle solid particles are enabled to directly fall into the pulp discharge port after impacting on the anti-impact grate plate, and the pulp sprayed to one side, back to the pulp inlet, of the anti-impact grate plate through the hole structure on the anti-impact grate plate can also flow back into the pulp discharge port based on the arrangement of the anti-impact grate plate above the pulp discharge port, namely, when the anti-impact grate plate is utilized to block and buffer on the path of pulp spraying, all the pulp can be ensured to flow into the pulp discharge port.
As a further improvement, at least two flushing nozzles are arranged towards the pulp outlet, and the flushing nozzles are defined as pulp outlet flushing nozzles which are respectively arranged on two sides of the anti-impact grate plate.
The beneficial effects are that: the flushing nozzles facing the pulp discharging port are arranged on the two sides of the impact-resistant grate plate, so that the pulp discharging port can be flushed and cleaned, and the smooth discharge of pulp influenced by hardened slag at the pulp discharging port is avoided.
As a further improvement, the flushing nozzle is arranged opposite to the anti-impact grate plate.
The beneficial effects are that: the flushing nozzle is arranged right opposite to the impact-resistant grating plate, so that the impact-resistant grating plate can be directly and efficiently flushed and cleaned.
As a further improvement, the flushing nozzle which is arranged opposite to the impact-resistant grate plate is defined as the impact-resistant grate plate flushing nozzle, and the impact-resistant grate plate flushing nozzle and the pulp inlet are respectively arranged at two sides of the impact-resistant grate plate.
The beneficial effects are that: the impact-resistant grate plate is flushed in the direction opposite to the slag pulp spraying direction, so that solid particles blocked in the pore structure of the impact-resistant grate plate can be effectively flushed away.
As a further improvement, the blowout prevention pressure reducing device further comprises a screening device, and the blowout prevention pressure reducing box is located above the screening device and fixed on a rack of the screening device, so that slurry discharged from the slurry discharge port can flow onto the screening device to be screened for solid and liquid.
The beneficial effects are that: the screening device is arranged to screen the slurry discharged from the slurry discharge port, so that solid-liquid separation is realized, and the belt conveyor is convenient to convey the residue soil.
As a further improvement, the blowout prevention pressure reducing device further comprises at least two connecting pipes connected with the slurry inlet, the other ends of the connecting pipes are used for being communicated with a gushing release opening formed in the barrel of the screw conveyor, and a valve used for controlling the on-off of the pipe body is arranged on the pipe body of at least one connecting pipe.
The beneficial effects are that: set up two piece at least connecting pipes, can select the connecting pipe of suitable quantity to open according to the sediment thick liquid volume adaptability of reality, when the sediment thick liquid volume is less, through closing the valve in order to open the connecting pipe of less quantity, keep the pressure in the soil storehouse, when the sediment thick liquid volume is great, can open the connecting pipe of more quantity to ensure can in time get rid of the sediment thick liquid, avoid soil storehouse pressure too big.
As a further improvement, a pressurizing and/or water adding boosting valve is arranged on the pipe body of each connecting pipe and is used for pressurizing and/or injecting water into the pipe body to boost the flow of the slag slurry in the pipe body.
The beneficial effects are that: when the problem that the slurry flows unsmoothly appears in the pipe body, the pressurization or water adding boosting valve can be used for pressurizing or adding water into the pipe body for boosting, so that the smooth flowing of the slurry in the pipe body is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a blowout prevention and pressure reduction device in embodiment 1 of a middle heading machine according to the present invention from a top view;
fig. 2 is a schematic structural view of the blowout-preventing pressure reducing box of the blowout-preventing pressure reducing device in the embodiment 1 of the middle heading machine according to the present invention at a main viewing angle;
fig. 3 is a schematic structural diagram of the blowout prevention decompression box of the blowout prevention decompression device in the embodiment 1 of the middle heading machine in the top view of the utility model;
fig. 4 is a schematic structural diagram showing an internal structure of the blowout prevention pressure reducing tank of the blowout prevention pressure reducing device of the embodiment 1 of the middle heading machine at a left-view angle;
FIG. 5 is a schematic structural view of an anti-blowout decompression box impact-resistant grate plate of an anti-blowout decompression device in an embodiment 1 of the middle development machine of the present invention;
1. a connecting pipe; 2. a blowout prevention decompression box; 3. a screening device; 4. a barrel; 5. an end face seal plate; 6. a pulp inlet; 7. a connecting flange; 8. a guide groove section; 9. a pulp discharging section; 10. impact-resistant grate plates; 11. a pore structure; 12. washing the spray head; 13. a valve; 14. flushing the necked flange; 15. a flange plate; 16. reinforcing ribs; 17. overhauling the flange with the neck; 18. closing the plate; 19. a pipe body; 20. a control valve; 21. adding water and gas to boost the valve; 22. a base.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrases "comprising an … …," or the like, do not exclude the presence of such elements, processes, or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.
The present invention will be described in further detail with reference to examples.
The utility model provides a concrete embodiment 1 of entry driving machine:
in the embodiment, the tunneling machine is specifically a muddy water open tunneling machine as an example, the structure and the working mode of tunneling in the invention are described, specifically, the tunneling machine comprises a shield body, the tunneling direction of the tunneling machine is defined as the front, a cutter head for excavating soil layers is arranged at the front side of the shield body, a soil bin is arranged at the rear side of the cutter head, the muck excavated by the cutter head enters the soil bin, a belt conveyor for conveying the muck backwards is arranged at the rear side of the shield body, in order to discharge the residue soil in the soil bin onto the belt conveyor, the heading machine further comprises a residue discharging system arranged between the soil bin and the belt conveyor, the residue discharging system specifically comprises a screw conveyor, the front end of the screw conveyor is communicated with the soil bin so as to convey the residue soil in the soil bin backwards in a screw manner, in order to prevent the situation of guniting and pressure relief during construction in a large-burial-depth high-pressure-bearing water-rich soft soil stratum, the rear side of the screw conveyor is connected with a blowout prevention and pressure reduction device.
Specifically, a slag hole and a gushing release hole are formed in a barrel of the screw conveyor, wherein the slag hole is provided with a gate for controlling the opening and closing of the slag hole. When the tunneling machine is constructed in a soft soil stratum with non-large burial depth and high pressure bearing and rich water, the spiral conveyor can reduce pressure of the slag soil with pressure to a normal pressure state through a soil plug effect of a spiral structure of the spiral conveyor and discharge the slag soil from a slag outlet. When the heading machine is constructed in a soft soil stratum with large burial depth and high pressure bearing and rich water, slag soil and liquid are mixed to form slag slurry, at the moment, a slag hole is closed, the slag slurry is discharged from a gushing release hole, and the condition of guniting pressure relief is avoided through a blowout prevention pressure relief device.
The structure of the blowout prevention pressure reducing device is shown in fig. 1, and comprises a connecting pipe 1, a blowout prevention pressure reducing box 2 and a screening device 3, as shown in fig. 2, fig. 3 and fig. 4, the box wall of the blowout prevention pressure reducing box 2 comprises a cylinder 4 with a circular cross section and end face seal plates 5 fixed at two axial ends of the cylinder 4, wherein a slurry inlet 6 is formed in one end face seal plate 5, a connecting flange 7 is arranged on the outer side of the slurry inlet 6, one end of the connecting pipe 1 is connected with the connecting flange 7 to be connected with the slurry inlet 6, the other end of the connecting pipe is communicated with a blowout release opening in a screw conveyor, and a slurry outlet is formed in the bottom of the blowout prevention pressure reducing box 3, namely the bottom of the cylinder 4. The sectional area of the cylinder body 4 perpendicular to the axial direction is larger than the caliber of the slurry inlet 6, so that the inner cavity of the blowout prevention decompression box 2 forms a decompression cavity, high-pressure slurry conveyed by the connecting pipe 1 is sprayed into the decompression cavity through the slurry inlet 6 to realize decompression, the slurry cannot be sprayed onto other equipment of the heading machine and into a tunnel under the constraint of the wall of the blowout prevention decompression box 2 during decompression, blowout prevention decompression of the slurry is realized, and the decompressed slurry is finally discharged through the slurry outlet.
In order to facilitate discharging of the slurry, solid particles in the slurry are prevented from being accumulated in the blowout prevention pressure reduction box 2, the slurry discharge port specifically comprises two sections, one section is a guide groove section 8 arranged at the bottom of the blowout prevention pressure reduction box 2, the other section is a slurry discharge section 9 connected to the lower end of the guide groove section 8, the guide groove section 8 is of a flaring structure with the caliber gradually increased from outside to inside, the slurry discharge section 9 is in butt joint with the guide groove section 8, and the slurry in the blowout prevention pressure reduction box 2 is guided to the slurry discharge section 9 by the guide groove section 8. In order to strengthen the structure of the slurry outlet, a reinforcing rib 16 is arranged between the outer wall of the guide groove section 8 and the barrel 4.
In this embodiment, in order to further prevent solid waste from accumulating in the blowout-preventing pressure reducing tank 2, an impact-resistant grate plate 10 is further provided in the blowout-preventing pressure reducing tank 2, and the impact-resistant grate plate 10 has a semicircular structure with a major arc on the outer periphery as shown in fig. 4 and 5, and has a hole structure 11 on the outer periphery of a circle having a diameter corresponding to the inner diameter of the cylinder 4. Regarding the position where the impact-resistant grate plate 10 is arranged, as shown in fig. 2, the impact-resistant grate plate 10 is arranged in the blowout-preventing pressure reducing tank 2 opposite to the slurry inlet 6 and above the slurry outlet, so that the slurry sprayed into the blowout-preventing pressure reducing tank 2 through the slurry inlet 6 can impact on the impact-resistant grate plate 10, and the slurry falls down into the slurry outlet under the blocking and guiding of the impact-resistant grate plate 10. In this embodiment, the pulp discharge section 9 is specifically a pipe section with a rectangular cross section, and the impact-resistant grate plate 6 is arranged opposite to the short edge of the inlet edge of the pulp discharge section 9. Because the anti-impact grate plate 10 is of a semicircular structure, and the lower part of the anti-impact grate plate is spaced from the bottom of the anti-spray decompression box 2, when slurry entering the side, back to the slurry inlet 6, of the anti-impact grate plate 10 through the hole structure 11 flows to the slurry discharge section 9, the anti-impact grate plate 10 cannot block the part of the slurry.
In order to wash and clean the interior of the blowout prevention pressure reduction box 2, a washing spray head 12 is further arranged on the blowout prevention pressure reduction box 2, the washing spray head is provided with a connector connected with a pipeline for supplying washing fluid and a valve 13 for controlling the opening and closing of the washing spray head 12, a part of the washing spray head 12 is positioned on the barrel 4 and faces towards the grout outlet, the part of the washing spray head 12 is defined as the grout outlet washing spray head, the grout outlet washing spray heads are respectively positioned on two sides of the anti-impact grate plate 10, and the anti-impact grate plate 10 is washed while the grout outlet is washed and dredged. And a part of flushing nozzles 12 are positioned on one side of the impact-resistant grate plate 10 back to the pulp inlet 6 and are arranged opposite to the plate surface of the impact-resistant grate plate 10, the flushing nozzles 12 are defined as impact-resistant grate plate flushing nozzles, specifically, a flushing necked flange 14 is arranged on the end face seal plate 5 at one end of the barrel body 4 far away from the pulp inlet 6, the neck of the flushing necked flange 14 connected with the end face seal plate 5 is an expanded neck, and for installing the flushing nozzles 12, a flange plate 15 is structurally fixed on the flange of the flushing necked flange 14, and the impact-resistant grate plate flushing nozzles are arranged on the flange plate 15. In this embodiment, the valve 13 of the washing nozzle 12 is specifically a ball valve, and in other embodiments, the valve of the washing nozzle may be other types of valves, such as a butterfly valve, a gate valve, and the like.
In this embodiment, as shown in fig. 2, 3 and 4, for the convenience of examining and repairing the inside of the blowout prevention pressure reduction box 2, the barrel 4 of the blowout prevention pressure reduction box 2 is further provided with an access hole, the access hole is connected with an access flange 17, a seal plate 18 is detachably fixed on the flange structure of the access flange through bolts, and when the inside of the blowout prevention pressure reduction box 2 needs to be examined and repaired, the seal plate 18 is detached.
In this embodiment, as shown in fig. 1, two slurry inlets are provided on the blowout-preventing pressure reducing tank 2, and each slurry inlet is connected with a connecting pipe 1. The connecting pipe 1 specifically comprises a pipe body 19 and a control valve 20 connected in series on the pipe body 19, the control valve 20 is controlled by a main control room of the heading machine, the through-flow of the tubular body 19 is controlled by controlling the opening and closing of a control valve 20, which control valve 20 is embodied as a pneumatic knife gate valve in the present embodiment, in other embodiments, the control valve 20 may be a valve of the type such as a ball valve, a butterfly valve, etc., which, when operated in a specific manner, is subject to problems of poor slurry flow in the connection pipe 1, the flow of the slurry in the other connecting pipe 1 can be boosted by closing one connecting pipe 1, and similarly, the pressure in the soil bin can be controlled by the opening number of the connecting pipes 1, when the pressure in the soil bin is unstably reduced, can close a connecting pipe 1, when the pressure in the soil storehouse can be stabilized to the standard value, can all open two connecting pipes 1 in order to satisfy the timely discharge of sediment thick liquid. In other embodiments, a control valve may be provided on the body of only one connecting tube. In other embodiments, the number of the connecting pipes may be more than two, and at this time, the pipe bodies of some of the connecting pipes may be provided with control valves, or the pipe bodies of all the connecting pipes may be provided with control valves. For the corresponding mode of the connecting pipes and the slurry inlet, in other embodiments, a large slurry inlet can be arranged on the blowout prevention decompression box, and each connecting pipe is connected with the one slurry inlet.
In order to further promote the smooth flow of the slag slurry in the pipe body 19, the pipe body 19 is further provided with an air-adding and water-adding boosting valve 21, and when the slag slurry in the pipe body 19 flows unsmoothly, air and water can be added into the pipe body through the air-adding and water-adding boosting valve 21 to boost the flow of the slag slurry. In other embodiments, only the water adding boosting valve or only the gas filling boosting valve may be arranged on the pipe body.
The pressure-reducing blowout prevention box 2 is arranged on the upper side of the screening device 3 and is installed on a frame of the screening device 3, a base 22 is arranged on the lower portion of the barrel 4 for installing the pressure-reducing blowout prevention box 2, and corresponding installation structures are arranged on the base 22 to achieve installation of the pressure-reducing blowout prevention box 2 on the frame of the screening device 3. After being discharged from a slurry discharge port of the blowout prevention decompression box 2, the slurry is screened by a screening device for solid-liquid separation, and the screened solid residue soil is conveyed backwards by a belt conveyor.
The utility model provides a concrete embodiment 2 of entry driving machine, its difference with embodiment 1 mainly lies in: in example 1, an impact resistant grate plate was provided for the slurry inlet. In this embodiment, in order to simplify the structure of the blowout prevention pressure reduction tank, the impact-resistant grate plate is not provided, and in order to ensure the durability of the blowout prevention pressure reduction device, the blowout prevention pressure reduction tank is made of a material having higher strength, or the wall thickness of the blowout prevention pressure reduction tank is increased.
The utility model provides a concrete embodiment 3 of entry driving machine, its difference with embodiment 1 mainly lies in: in example 1, an impact resistant grate plate was placed over the discharge opening. In the embodiment, the anti-impact grate plate is arranged on the side part of the pulp outlet, so that the pulp outlet is positioned between the pulp inlet and the anti-impact grate plate, and in order to ensure that the pulp sprayed to the side, back to the pulp inlet, of the anti-impact grate plate can flow into the pulp outlet, the lower side of the anti-impact grate plate and the bottom of the blowout-preventing pressure reducing box are arranged at intervals.
The utility model provides a concrete embodiment 4 of entry driving machine, its difference with embodiment 1 mainly lies in: in example 1, the blowout preventing and pressure reducing device comprises a screening device. In the embodiment, the blowout prevention pressure reducing device does not comprise a screening device or a belt conveyor, and the slag slurry flowing out of the slurry outlet of the blowout prevention pressure reducing box is directly discharged into the slag car.
The utility model provides a concrete embodiment 5 of entry driving machine, its difference with embodiment 1 mainly lies in: in example 1, the blowout-preventing decompression tank and the screw conveyor were connected by a connecting pipe. In this embodiment, the slurry inlet of the blowout prevention decompression box is directly connected with the gushing release port formed on the barrel of the screw conveyor.
The utility model provides an embodiment of entry driving machine slag output system: the utility model discloses well entry driving machine slag output system's structure and working method are the same with the slag output system in the arbitrary one of above-mentioned entry driving machine embodiment 1-5, no longer give a redundant description here.
The utility model provides a prevent spouting pressure relief device's embodiment: the utility model discloses well prevent spouting pressure relief device's structure and working method are the same with prevent spouting pressure relief device of slag system in the arbitrary one of above-mentioned entry driving machine embodiment 1-5, no longer give a redundant description here.
Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments may be modified without inventive effort, or some technical features may be substituted equally. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. The utility model provides a prevent spouting pressure relief device, characterized by, including preventing spouting pressure relief tank (2), offer on the tank wall of preventing spouting pressure relief tank (2) be used for with the screw conveyer barrel on gush grout inlet (6) of release mouth intercommunication of spouting that set up for the sediment thick liquid can spout in preventing spouting pressure relief tank (2) through advancing grout inlet (6), the mud discharging mouth has been seted up to the tank wall bottom of preventing spouting pressure relief tank (2) for the sediment thick liquid that supplies to prevent spouting pressure relief tank (2) flows out, still be provided with flush head (12) on the tank wall of preventing spouting pressure relief tank (2), be used for to preventing spouting in pressure relief tank (2) fluid with to preventing spouting pressure relief tank (2) inside flush the cleanness.
2. A blowout prevention pressure reducing device according to claim 1, wherein an impact resistant grate plate (10) is arranged in the blowout prevention pressure reducing tank (2), and the impact resistant grate plate (10) is arranged opposite to the grout inlet (6).
3. A blowout prevention pressure reducing device according to claim 2, wherein the slurry inlet (6) is provided in a side wall of the blowout prevention pressure reducing tank (2), and the impact resistant grate plate (10) is provided above the slurry discharge port.
4. A blowout prevention and pressure reduction device according to claim 3, wherein at least two of said flushing nozzles (12) are arranged towards the discharge opening, such flushing nozzles (12) being defined as discharge opening flushing nozzles, which are arranged on both sides of the impact resistant grate plate (10).
5. A blowout prevention and pressure reduction device according to any one of claims 2 to 4, wherein the flushing nozzle (12) is provided opposite the anti-impact grate plate (10).
6. A blowout prevention pressure reducing device according to claim 5, wherein the flushing nozzles (12) defined to be disposed opposite to the impact resistant grate plate (10) are impact resistant grate plate flushing nozzles, and the impact resistant grate plate flushing nozzles and the grout inlet (6) are disposed on both sides of the impact resistant grate plate (10).
7. A blowout prevention pressure reducing device according to any one of claims 1 to 4, wherein the blowout prevention pressure reducing device further comprises a screening device (3), and the blowout prevention pressure reducing box (2) is positioned above the screening device (3) and fixed on a frame of the screening device (3) so that slurry discharged from the slurry discharge port can flow onto the screening device (3) for solid-liquid screening.
8. A blowout prevention and pressure reduction device according to any one of claims 1 to 4, wherein the blowout prevention and pressure reduction device further comprises at least two connecting pipes (1) connected with the slurry inlet, the other ends of the connecting pipes (1) are used for being communicated with a blowout release port formed in a barrel of a screw conveyor, and a valve used for controlling the on-off of the pipe body (19) is arranged on the pipe body (19) of at least one connecting pipe (1).
9. A blowout preventing and reducing device according to claim 8, wherein the pipe body (19) of each connecting pipe (1) is further provided with a pressurizing and/or water adding boosting valve for pressurizing and/or water injecting the flow of the slurry in the pipe body (19).
10. A slag tapping system of a heading machine, which comprises a screw conveyor connected with a soil bin to convey slag soil in the soil bin outwards, wherein a barrel body of the screw conveyor is provided with a slag outlet and a gushing release port which are relatively independent, and the slag tapping system of the heading machine is characterized by further comprising the blowout prevention pressure relief device as claimed in any one of claims 1 to 9.
11. A heading machine comprising a cutter head, a soil bin provided at the rear side of the cutter head, and a slag tapping system, wherein the slag tapping system is the heading machine slag tapping system according to claim 10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220142427.5U CN217080478U (en) | 2022-01-19 | 2022-01-19 | Blowout prevention pressure reducing device, heading machine slag tapping system and heading machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220142427.5U CN217080478U (en) | 2022-01-19 | 2022-01-19 | Blowout prevention pressure reducing device, heading machine slag tapping system and heading machine |
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| CN217080478U true CN217080478U (en) | 2022-07-29 |
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| CN202220142427.5U Active CN217080478U (en) | 2022-01-19 | 2022-01-19 | Blowout prevention pressure reducing device, heading machine slag tapping system and heading machine |
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| Country | Link |
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| CN (1) | CN217080478U (en) |
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