CN109503297B - Emulsion explosive pumping device and emulsion explosive charging system - Google Patents
Emulsion explosive pumping device and emulsion explosive charging system Download PDFInfo
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- CN109503297B CN109503297B CN201811505314.1A CN201811505314A CN109503297B CN 109503297 B CN109503297 B CN 109503297B CN 201811505314 A CN201811505314 A CN 201811505314A CN 109503297 B CN109503297 B CN 109503297B
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
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- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to the technical field of blasting exploitation of underground coal mines, and discloses an emulsion explosive pumping device and an emulsion explosive charging system, wherein the device comprises: the device comprises an emulsion explosive conveying pump, a hydraulic driving device, a clutch device and a pressure transmitting device; the clutch device includes: the driving shaft, the driven shaft, the connecting mechanism and the hydraulic driving piece; the pressure transmitting device transmits the pressure at the output port of the emulsion explosive conveying pump to the clutch device to provide driving force; when the driving force is larger than or equal to a preset pressure value, the input shaft of the emulsion explosive conveying pump and the driving shaft of the hydraulic driving device are in a connecting shaft state, and when the driving force is smaller than the preset pressure value, the input shaft of the emulsion explosive conveying pump and the driving shaft of the hydraulic driving device are in a non-connecting shaft state. According to the emulsion explosive pumping device and the emulsion explosive charging system, provided by the invention, the operation of the conveying pump can be effectively stopped under the condition of material breaking, and explosion accidents caused by heating caused by dry friction between the rotor and the stator of the conveying pump are avoided.
Description
Technical Field
The invention relates to the technical field of blasting exploitation of underground coal mines, in particular to an emulsion explosive pumping device and an emulsion explosive charging system.
Background
Coal is the main energy source in China, and the reserves which are ascertained at present reach 9000 multiplied by 10 8 t, the proportion of consumption in the primary energy structure of China is always kept above 70%. Along with the adjustment of the industrial structure and the energy structure in China, the proportion of coal consumption in the primary energy of China is in a slow descending trend, but the total consumption amount of the coal is still rising, and the coal is stable for more than 50% in the energy structure in the first 50 years of 21 st century in China. Currently, the total coal yield in China is about 94%. And coal mining and blasting operation is carried out on domestic underground coal mineIn the process, the traditional manual charging method is still adopted, an operator uses a gun stick to poke the wound finished explosive into the gun holes one by one, and then the hole is plugged. The method has the defects of low working efficiency, poor working environment, high labor intensity of workers, small charging density, difficult control of blasting effect, high blasting cost and the like. Especially for the charge of the upward ultra-deep hole, the method is more time-consuming and labor-consuming, low in efficiency and poor in safety.
The on-site mixing technology of emulsion explosive refers to that emulsion matrix and additive of emulsion explosive semi-finished product produced by ground station are loaded by charging equipment and enter blasting operation site, long-distance conveying of emulsion matrix in the medicine conveying pipe is realized by pumping and metering system, emulsion matrix and additive are mixed in mixer at the end of medicine conveying pipe and then enter blast hole, and emulsion explosive is formed in blast hole after chemical reaction for a certain time. The emulsion matrix does not have detonator sensitivity, so that the on-site mixing technology of the emulsion explosive improves the intrinsic safety of the explosive in the transportation and use processes.
At present, the field mixed loading technology of emulsion explosive is widely applied to the exploitation of open-pit mines at home and abroad, and in recent years, the technology is gradually popularized and applied to underground metal ores, but the application in the technical field of underground coal mine blasting exploitation is still blank.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to solve the technical problems that in the prior art, the traditional emulsion explosive charger adopts electrical control, and explosion accidents are easily caused by electric sparks and flames when the emulsion explosive charger is used underground a coal mine, and provides an emulsion explosive pumping device and an emulsion explosive charging system.
(II) technical scheme
Aiming at the technical problems in the prior art, in a first aspect, the invention provides an emulsion explosive pumping device, which comprises: the device comprises an emulsion explosive conveying pump, a hydraulic driving device, a clutch device and a pressure transmitting device; the clutch device includes: the driving shaft, the driven shaft, the connecting mechanism and the hydraulic driving piece; the driving shaft is connected with the driving shaft of the hydraulic driving device and rotates along with the driving shaft, and the driven shaft is connected with the input shaft of the emulsion explosive conveying pump and drives the input shaft to rotate; the driving shaft is arranged in the axial cavity of the driven shaft and has a rotation gap with the driven shaft; the pressure transmitting device transmits the pressure at the output port of the emulsion explosive conveying pump to the hydraulic driving piece to provide driving force for the hydraulic driving piece; when the driving force is larger than or equal to a preset pressure value, the connecting mechanism is driven by the hydraulic driving piece to connect the driving shaft and the driven shaft and drive the driving shaft and the driven shaft to synchronously rotate, the input shaft of the emulsion explosive conveying pump and the driving shaft of the hydraulic driving device are in a connecting shaft state, and when the driving force is smaller than the preset pressure value, the connecting mechanism is driven by the hydraulic driving piece to disconnect the connection between the driving shaft and the driven shaft, and the input shaft of the emulsion explosive conveying pump and the driving shaft of the hydraulic driving device are in a non-connecting shaft state.
In a second aspect, the invention provides an emulsion explosive charging system comprising the emulsion explosive pumping device.
(III) beneficial effects
According to the emulsion explosive pumping device and the emulsion explosive charging system, provided by the invention, under the non-electric control condition, the pressure of the output port of the emulsion explosive conveying pump is transmitted to the clutch device through the pressure transmitting device, and under the material breaking condition, the connection between the hydraulic driving device and the emulsion explosive conveying pump can be effectively cut off, and the temperature rise caused by dry friction generated between the rotor and the stator of the conveying pump is avoided, so that the risk of explosion accidents is avoided.
According to the emulsion explosive charging system provided by the invention, the raw materials of the emulsion explosive, namely the emulsion matrix and the additive, are respectively conveyed into the blast hole under the coal mine, and are subjected to on-site reaction in the blast hole to form the emulsion explosive, so that on-site mixing of the emulsion explosive under the underground coal mine is realized, and compared with the traditional charging system for directly conveying the ready-made emulsion explosive, the emulsion explosive charging system can avoid explosion accidents in the conveying process and has higher safety.
Drawings
FIG. 1 is a schematic view of an embodiment of an emulsion explosive pumping device according to the present invention;
FIG. 2 is a schematic left-hand view of an embodiment of the clutch device of the present invention;
fig. 3 is a schematic view of an embodiment of an emulsion explosive charging system of the present invention.
Wherein:
101: an emulsion explosive delivery pump; 102, a hydraulic driving device; 103, a clutch device;
104, a pressure transmitting device; 131, a driving shaft; 132, a driven shaft;
133, a connecting mechanism; 134 hydraulic drive; 135: presetting a spring;
141: a hydraulic transmitting tube; 201: an emulsion matrix bin; 202: an additive bin;
203: a mixing device; 204: a pressure measuring device; 205: a drag reducing device;
206: an additive delivery pump; 300: a blast hole;
1331: a slope groove; 1332: a roller;
101a: an output port of the emulsion explosive delivery pump; 101b: an input port of an emulsion explosive delivery pump.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 is a schematic structural view showing an embodiment of an emulsion explosive pumping device according to the present invention, and as shown in fig. 1, the emulsion explosive pumping device includes: an emulsion explosive delivery pump 101, a hydraulic driving device 102, a clutch device 103 and a pressure transmitting device 104; the clutch device 103 includes: a driving shaft 131, a driven shaft 132, a connecting mechanism 133, and a hydraulic driver 134; the driving shaft 131 is connected with the driving shaft of the hydraulic driving device 102 and rotates along with the driving shaft, and the driven shaft 132 is connected with the input shaft of the emulsion explosive conveying pump 101 and drives the input shaft to rotate; the driving shaft 131 is arranged in the axial cavity of the driven shaft 132 and has a rotation gap with the driven shaft 132; the pressure transmitting device 104 transmits the pressure at the output port 101b of the emulsion explosive conveying pump to the hydraulic driving piece 134 to provide driving force for the hydraulic driving piece 134; when the driving force is greater than or equal to a preset pressure value, the connecting mechanism 133 is driven by the hydraulic driving piece 134 to connect the driving shaft 131 with the driven shaft 132 and drive the driving shaft 131 and the driven shaft 132 to synchronously rotate, the input shaft of the emulsion explosive conveying pump 101 and the driving shaft of the hydraulic driving device 102 are in a connecting shaft state, and when the driving force is less than the preset pressure value, the connecting mechanism 133 is driven by the hydraulic driving piece 134 to disconnect the connection between the driving shaft 131 and the driven shaft 132, and the input shaft of the emulsion explosive conveying pump 101 and the driving shaft of the hydraulic driving device 102 are in a non-connecting shaft state.
The emulsion explosive conveying pump 101 is a device mainly used for pumping explosives, and can be applied to any explosive charging system, materials are sucked through an input port 101a of the emulsion explosive conveying pump, then the materials are conveyed out through an output port 101b of the emulsion explosive conveying pump, the emulsion explosive conveying pump 101 is powered by a hydraulic driving device 102, a device driven by hydraulic pressure can be known to a person skilled in the art, such as a hydraulic motor, and an electric control device can be avoided by the hydraulic driving device 102 so as to avoid accidents under a coal mine.
The clutch device 103 is connected between the emulsion explosive delivery pump 101 and the hydraulic driving device 102, and realizes clutch control. Specifically, fig. 2 shows a schematic left-hand view of an embodiment of the clutch device 103 according to the present invention, and as shown in fig. 2, the clutch device 103 includes: a driving shaft 131, a driven shaft 132, a connecting mechanism 133, and a hydraulic driver 134; the driven shaft 132 and the driven shaft 132 are generally cylindrical structures and can rotate around respective central axes, the driven shaft 132 is provided with an axial cavity, the driven shaft 132 is sleeved outside the driving shaft 131, the driving shaft 131 is arranged in the axial cavity and has a rotation gap with the inner side wall of the driven shaft 132, namely, the driving shaft 131 and the driven shaft 132 are not contacted with each other, the driving shaft 131 is connected with the driving shaft of the hydraulic driving device 102 and rotates along with the driving shaft, and the driven shaft 132 is connected with the input shaft of the emulsion explosive conveying pump 101 and drives the input shaft to rotate. A connection mechanism 133 is located between the driving shaft 131 and the driven shaft 132 for connecting and disconnecting the driving shaft 131 and the driven shaft 132, a hydraulic driving member 134 provides power to the connection mechanism 133 to drive the connection mechanism 133 to move, and the hydraulic driving member 134 provides driving force by transmitting the output pressure of the explosive at the output port through a pressure transmitter 104 installed at the output port 101b of the emulsion explosive delivery pump. In the system, the pressure transmitting device 104 feeds back the pressure of an output port of the pump to the hydraulic driving piece 134 in real time, when the pressure of the output port of the pump is a preset pressure value, the hydraulic driving piece 134 drives the connecting mechanism 133 to move so that the connecting mechanism 133 is respectively connected with the driving shaft 131 and the driven shaft 132 and drives the driving shaft 131 and the driven shaft 132 to synchronously rotate, and then the driving shaft of the hydraulic driving device 102 and the input shaft of the emulsion explosive conveying pump 101 are in a connecting shaft state, and the hydraulic driving device 102 can drive the emulsion explosive conveying pump 101 to work; when the pressure of the output port of the pump is smaller than the preset pressure value, the hydraulic driving piece 134 drives the connecting mechanism 133 to move to disconnect the connecting mechanism 133 from the driving shaft 131 and the driven shaft 132, at this time, the driving shaft 131 cannot drive the driven shaft 132 to rotate, then the driving shaft of the hydraulic driving device 102 and the input shaft of the emulsion explosive conveying pump 101 are in a non-linkage state, the emulsion explosive conveying pump 101 can stop working, the connection between the hydraulic driving device 102 and the emulsion explosive conveying pump 101 can be effectively cut off under the condition of material breaking, and the heating caused by dry friction between the rotor (input shaft) and the stator of the emulsion explosive conveying pump 101 is avoided, so that the risk of explosion accidents is avoided.
It should be noted that, the preset pressure value mentioned in this embodiment is a pressure value set for stopping the emulsion explosive conveying pump to avoid dry friction between the rotor and the stator when no material is conveyed, so the preset pressure value can be determined according to the pressure at the output port of the emulsion explosive conveying pump when no material is conveyed, and the preset pressure value is in the range of 0.3-0.5MPa through a great number of experiments. In practice, when the pressure of the output port of the pump is greater than or equal to 0.7MPa-1.2MPa, and when the pressure of the output port of the pump is less than or equal to 0.3MPa, the preset pressure value is preferably 0.3MPa, and in practice, the preset pressure value is normal and safe, and when the pressure of the output port of the pump is less than 0.3MPa, it is judged that the flow is cut off, so that when the pressure of the output port of the pump is 0.7MPa-1.2MPa, it can be set that the hydraulic driving piece 134 drives the connecting mechanism 133 to move, so that the connecting mechanism 133 connects the driving shaft 131 and the driven shaft 132 to drive the driving shaft 131 and the driven shaft 132 to synchronously rotate, and at this time, the driving shaft of the hydraulic driving device 102 and the input shaft of the emulsion explosive conveying pump 101 are in a continuous shaft state, and the emulsion explosive conveying pump 101 works normally; when the pressure of the output port of the pump is less than 0.3MPa, the hydraulic driving piece 134 drives the connecting mechanism 133 to move to disconnect the connecting mechanism 133 from the driving shaft 131 and the driven shaft 132, and at the moment, the driving shaft of the hydraulic driving device 102 and the input shaft of the emulsion explosive conveying pump 101 are in a non-linkage state, so that the emulsion explosive conveying pump 101 stops working.
According to the emulsion explosive pumping device provided by the embodiment of the invention, under the non-electric control condition, the pressure of the output port 101b of the emulsion explosive delivery pump is transmitted to the clutch device 103 through the pressure transmitting device 104, and under the material breaking condition, the connection between the hydraulic driving device 102 and the emulsion explosive delivery pump 101 can be effectively cut off, so that the temperature rise caused by dry friction of the delivery pump is avoided, and the risk of explosion accidents is avoided.
On the basis of the above embodiment, this embodiment provides a specific implementation structure of the connection mechanism 133, as shown in fig. 2, the connection mechanism 133 includes: the hydraulic driving device comprises a slope groove 1331 and a roller 1332, wherein the slope groove 1331 is formed in the outer side wall of the driving shaft 131, the roller 1332 is arranged in the slope groove 1331, the roller 1332 slides along a groove slope under the driving of the hydraulic driving piece 134, when the driving force is larger than or equal to a preset pressure value, the roller 1332 is respectively abutted against the driving shaft 131 and the driven shaft 132, and when the driving force is smaller than the preset pressure value, the roller 1332 is disconnected from being abutted against the driven shaft 132.
Specifically, the slope groove 1331 is a V-shaped groove structure formed by cutting a part of the outer side wall of the driving shaft 131 obliquely, and comprises a groove slope and a groove bottom, the groove slope inclines in the opposite direction of rotation of the driving shaft 131, the distance from the top point of the groove slope to the inner side surface of the driven shaft 132 to the low point of the groove slope gradually increases, the roller 1332 slides along the groove slope under the driving of the hydraulic driving piece 134, when the roller 1332 moves from the low point of the groove slope to the top point, the distance between the roller 1332 and the inner side surface of the driven shaft 132 is gradually reduced until the roller 1332 respectively abuts against the groove slope and the inner side surface of the driven shaft 132, and when the driving shaft 131 rotates, the roller 1332 drives the driven shaft 132 to synchronously rotate due to the friction force, and at the moment, the driving shaft of the hydraulic driving device 102 and the input shaft of the emulsion explosive conveying pump 101 are in a connecting shaft state. The slope length of the groove slope is designed according to the pressure at the output port of the pump and the disconnection point of the connecting shaft, the hydraulic driving piece 134 provides driving force by the pressure at the output port of the pump, when the pressure is larger than or equal to a preset pressure value, the roller 1332 processes the abutting state, when the pressure at the output port of the pump is gradually reduced, the driving force is smaller and smaller, the roller 1332 returns and slides to the bottom point along the groove slope, when the pressure is smaller than the preset pressure value, the roller 1332 is disconnected from the abutting of the inner side surface of the driven shaft 132, at the moment, the driving shaft 131 cannot drive the driven shaft 132 to rotate, and then the driving shaft of the hydraulic driving device 102 and the input shaft of the emulsion explosive conveying pump 101 are in a non-linkage state.
In order to facilitate automatic resetting of the roller 1332, a preset spring 135 may be disposed between the roller 1332 and the hydraulic driving member 134, and as the driving force of the hydraulic driving member 134 gradually decreases, the preset spring 135 resets to drive the roller 1332 to slide toward the bottom point, and the preset pressure of the spring may be adjusted by a screw according to the output port pressure of the pump, so that when the driving force of the hydraulic driving member 134 is greater than or equal to a preset pressure value, the roller 1332 is in an abutting state with the driven shaft 132, and when the driving force is less than the preset pressure value, the roller 1332 breaks the abutting process with the driven shaft 132.
On the basis of the above embodiments, this embodiment provides a specific structure of the hydraulic driving member 134 and the pressure transmitting device 104, as shown in fig. 2, the pressure transmitting device 104 includes: and one end of the hydraulic transmission pipe 141 is communicated with the output port 101b of the emulsion explosive conveying pump, and the other end of the hydraulic transmission pipe 141 is fixed at the bottom of the inclined groove 1331. Specifically, the other end of the hydraulic transmitting tube 141 may vertically pass through the bottom of the groove and be fixed at the bottom of the slope groove 1331, in order to improve the pressure transmission sensitivity, the hydraulic transmitting tube 141 may be filled with a conductive medium, and a portion of the explosive at the output port 101b of the emulsion explosive delivery pump enters the hydraulic transmitting tube 141 to squeeze the conductive medium, thereby transmitting the pressure to the other end of the hydraulic transmitting tube 141. The hydraulic transmitting tube 141 may be a metal bellows, and the conductive medium may be silicone oil with high pressure conductivity.
The hydraulic drive 134 includes: a piston rod; one end of the piston rod is placed in the hydraulic transmitting tube 141, and the other end is connected with the roller 1332 through the pre-adjusting spring 135 and drives the roller 1332 to slide. Specifically, the piston rod is disposed at one end of the hydraulic transmission tube 141 passing through the bottom of the groove, and the piston rod can be designed into a piston structure in the hydraulic transmission tube 141 as known to those skilled in the art, and one end of the piston rod disposed in the tube is provided with a cap abutting against the tube orifice to limit the piston rod to move back and forth in the tube under the pressure of the conductive medium.
Fig. 3 is a schematic structural diagram of an embodiment of an emulsion explosive charging system according to the present invention, where the system includes the emulsion explosive pumping device, and the structure of the emulsion explosive pumping device is described above and is not described herein. Further, the method further comprises the following steps: an emulsion base tank 201 and an additive tank 202; the input port 101a of the emulsion explosive conveying pump is communicated with the emulsion matrix box 201 through a pipeline, and the output port 101b of the emulsion explosive conveying pump is communicated with the blast hole 300 of the underground coal mine through a conveying pipe; the additive tank 202 communicates with the input port of the additive delivery pump 206 via a delivery tube, and the output port of the additive delivery pump 206 communicates with the borehole 300 of the underground coal mine via a delivery tube. It should be noted that, the drug delivery tube of this embodiment preferably adopts a dual-resistant tube with flame retardant and antistatic properties; the additive delivery pump 206 can adopt a pumping device with the same structure as the emulsion explosive delivery pump 101, and adopts a hydraulic delivery mode to carry out material delivery, so as to avoid adopting electric control equipment and reduce the risk of explosion accidents. Further, control valves may be provided on the drug delivery pipe between the input port 101a of the emulsion explosive delivery pump and the emulsion matrix tank 201, and between the input port of the additive delivery pump 206 and the additive tank 202, respectively, for controlling the delivery amounts of the emulsion matrix and the additive raw materials.
The workflow of the emulsion explosive charging system is as follows: moving the system to a coal mine underground explosive loading site, connecting an input port 101a of an emulsion explosive conveying pump with an emulsion matrix box 201 through a pipeline, connecting an input port of an additive conveying pump 206 with the additive box 202, connecting an output port 101b of the emulsion explosive conveying pump with a medicine conveying pipe, and inserting the medicine conveying pipe into the inner bottom of a blast hole 300; the emulsion matrix is added into the emulsion matrix material box 201, the additive is added into the additive material box 202, the control valve is opened, the hydraulic control valve is operated to sequentially start the additive conveying pump 206 and the emulsion explosive conveying pump 101, the emulsion matrix and the additive are filled into the blast hole 300 through the medicine conveying pipe and mixed at the same time, and the emulsion explosive for coal mine is formed in the blast hole 300.
According to the emulsion explosive charging system provided by the embodiment of the invention, the raw materials of the emulsion explosive, namely the emulsion matrix and the additive, are respectively conveyed into the blast hole 300 under the coal mine, and the emulsion explosive is formed by on-site reaction in the blast hole 300, so that on-site mixing and charging of the emulsion explosive under the underground coal mine are realized, and compared with the traditional charging system for directly conveying the ready-made emulsion explosive, explosion accidents can be avoided in the conveying process, and the safety is higher.
On the basis of the above embodiments, this embodiment further includes: the mixing device 203, the output port 101b of the emulsion explosive delivery pump is communicated with the inlet of the mixing device 203 through a drug delivery pipe, the additive tank 202 is communicated with the input port of the additive delivery pump 206 through a drug delivery pipe, the output port of the additive delivery pump 206 is communicated with the inlet of the mixing device 203 through a drug delivery pipe, and the outlet of the mixing device 203 is inserted into the blast hole 300 of the underground coal mine through a drug delivery pipe. The emulsion matrix and the additive are firstly conveyed to the mixing device 203 for automatic mixing, the reaction is fully performed, the quality of the formed emulsion explosive is higher, and the mixing device 203 can realize automatic mixing operation without manual operation. Further, the pressure measuring device 204 and the drag reducing device 205 are sequentially arranged on a pipeline for communicating the output port 101b of the emulsion explosive conveying pump with the mixing device 203, the output port 101b of the emulsion explosive conveying pump is used for sequentially communicating the pressure measuring device 204 with the inlet of the drag reducing device 205 through a medicine conveying pipe, the output port of the additive conveying pump 206 is communicated with the inlet of the drag reducing device 205 through a medicine conveying pipe, and the outlet of the drag reducing device 205 is communicated with the mixing device 203. The pressure measuring device 204 can adopt a traditional mechanical pressure gauge to display the pumping pressure in the process of drug delivery in real time; the drag reducer 205 functions primarily to achieve long distance transport of the high viscosity emulsion matrix within the small diameter drug delivery tube through the water-ring drag reduction technique.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. An emulsion explosive pumping device, comprising: the device comprises an emulsion explosive conveying pump, a hydraulic driving device, a clutch device and a pressure transmitting device;
the clutch device includes: the driving shaft, the driven shaft, the connecting mechanism and the hydraulic driving piece;
the driving shaft is connected with the driving shaft of the hydraulic driving device and rotates along with the driving shaft, and the driven shaft is connected with the input shaft of the emulsion explosive conveying pump and drives the input shaft to rotate; the driving shaft is arranged in the axial cavity of the driven shaft and has a rotation gap with the driven shaft;
the pressure transmitting device transmits the pressure at the output port of the emulsion explosive conveying pump to the hydraulic driving piece to provide driving force for the hydraulic driving piece; when the driving force is larger than or equal to a preset pressure value, the connecting mechanism is driven by the hydraulic driving piece to connect the driving shaft and the driven shaft and drive the driving shaft and the driven shaft to synchronously rotate, the input shaft of the emulsion explosive conveying pump and the driving shaft of the hydraulic driving device are in a connecting shaft state, and when the driving force is smaller than the preset pressure value, the connecting mechanism is driven by the hydraulic driving piece to disconnect the connection between the driving shaft and the driven shaft, and the input shaft of the emulsion explosive conveying pump and the driving shaft of the hydraulic driving device are in a non-connecting shaft state;
the connecting mechanism comprises: the hydraulic driving piece is driven by the hydraulic driving piece to slide along a groove inclined plane, when the driving force is greater than or equal to a preset pressure value, the roller is respectively abutted with the driving shaft and the driven shaft, and when the driving force is less than the preset pressure value, the roller is disconnected from being abutted with the driven shaft;
wherein the groove inclined surface is inclined along the opposite direction of the rotation of the driving shaft;
a preset spring is arranged between the roller and the hydraulic driving piece;
the pressure transmitter includes: one end of the hydraulic transmission pipe is communicated with the output port of the emulsion explosive conveying pump, and the other end of the hydraulic transmission pipe is fixed at the bottom of the inclination groove;
the hydraulic drive includes: a piston rod; one end of the piston rod is arranged in the hydraulic transmission pipe, and the other end of the piston rod is connected with the roller through the preset spring and drives the roller to slide;
the hydraulic transmitting tube contains a conducting medium to conduct the pressure of the emulsion explosive at the output port to provide driving force for the piston rod.
2. The emulsion explosive pumping device according to claim 1, wherein the preset pressure value ranges from 0.3MPa to 0.5MPa.
3. The emulsion explosive pumping device according to claim 1, wherein the hydraulic transmitting tube is a metal corrugated tube; the conductive medium adopts silicone oil.
4. An emulsion explosive charge system comprising an emulsion explosive pumping device according to any one of claims 1 to 3.
5. The emulsion explosive charging system of claim 4 further comprising: an emulsion base feed tank and an additive feed tank; the input port of the emulsion explosive conveying pump is communicated with the emulsion matrix box through a pipeline, and the output port of the emulsion explosive conveying pump is communicated with a blast hole of an underground coal mine through a conveying pipe; the additive box is communicated with the input port of the additive conveying pump through the medicine conveying pipe, and the output port of the additive conveying pump is communicated with the blast hole of the underground coal mine through the medicine conveying pipe.
6. The emulsion explosive charging system of claim 5 further comprising: the mixing device, the delivery outlet of emulsion explosive delivery pump pass through the transfer line with mixing device's entry intercommunication, the additive workbin passes through the transfer line and communicates with the input port of additive delivery pump, the delivery outlet of additive delivery pump pass through the transfer line with mixing device's entry intercommunication, mixing device's export passes through the transfer line and inserts in the big gun hole in colliery in the pit.
7. The emulsion explosive charging system of claim 6 wherein pressure measuring means and drag reducing means are provided in sequence between the output of the emulsion explosive delivery pump and the inlet of the mixing means, the additive delivery pump being in communication with the drag reducing means via a delivery tube.
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| CN201811505314.1A CN109503297B (en) | 2018-12-10 | 2018-12-10 | Emulsion explosive pumping device and emulsion explosive charging system |
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| CN201811505314.1A CN109503297B (en) | 2018-12-10 | 2018-12-10 | Emulsion explosive pumping device and emulsion explosive charging system |
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