CN107725803B - Check valve assembly and pumping and filling pipeline system - Google Patents
Check valve assembly and pumping and filling pipeline system Download PDFInfo
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- CN107725803B CN107725803B CN201711128962.5A CN201711128962A CN107725803B CN 107725803 B CN107725803 B CN 107725803B CN 201711128962 A CN201711128962 A CN 201711128962A CN 107725803 B CN107725803 B CN 107725803B
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- 238000005086 pumping Methods 0.000 title claims abstract description 38
- 230000001276 controlling effect Effects 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 29
- 230000003116 impacting effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 75
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 102200068694 rs281865207 Human genes 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
- E21F15/10—Hydraulic or pneumatic filling-up machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Reciprocating Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a check valve assembly and a pumping filling pipeline system provided with the check valve assembly, which can prevent filling slurry from impacting an S-valve type piston filling industrial pump. The check valve assembly includes a valve body and a first electromagnetic directional valve block. The valve body comprises a shell, a valve core and a valve body oil cylinder, a feed port on the shell is matched with an outlet of an S-valve type piston filling industrial pump in the pumping filling pipeline system, the valve body oil cylinder drives the valve core to move to a limit position in the shell, the shell is closed, and the valve body oil cylinder drives the valve core to leave the limit position and the shell is communicated; the first electromagnetic reversing valve group is used for controlling the valve body oil cylinder; the S pipe in the S valve type piston filling industrial pump is driven to swing by a swing oil cylinder, the swing oil cylinder is controlled by a second electromagnetic reversing valve group, and the first electromagnetic reversing valve group and the second electromagnetic reversing valve group are arranged in parallel and synchronously act.
Description
Technical Field
The invention relates to the technical field of mine paste filling, in particular to a check valve assembly and a pumping filling pipeline system provided with the check valve assembly.
Background
The paste filling is to make solid wastes such as mine tailings, crushed stone, fly ash, industrial slag and the like into paste slurry which does not need to be dehydrated, and convey the paste slurry to a downhole filling area through a pipeline under the action of pumping pressure or gravity. In the paste filling system, the paste filling system can be generally divided into 5 subsystems according to the filling process flow, namely a tailing slurry thickening system, an aggregate crushing and screening system, a filling slurry stirring and preparing system, a pumping and filling pipeline system, an electrical control system and the like.
In paste filling systems, some filling stations are built below the filling tunnel location, and the filling pipes must be arranged up the slope. So that the filling slurry at a high position in the filling pipe can generate extremely high pressure downwards under the action of self gravity. The height difference is tens of meters, even hundreds of meters, and the generated pressure can reach about 10 MPa.
In the prior art, the conveying power of filling slurry in a filling pipeline is continuously provided by an S-valve type piston filling industrial pump.
Referring to fig. 1 and 2, it can be seen that the basic working principle of the S-valve piston filling industrial pump for pumping filling slurry is as follows: one concrete cylinder 5 (i.e. a filling industrial pump conveying cylinder) sucks materials from the hopper 1, the other concrete cylinder 5 is connected with the S pipe 3, and slurry in the cylinder enters a filling pipeline through the S pipe 3 and the discharge hole 2 under the pushing of the piston 4; after one stroke is completed, the S-tube 3 swings towards the other concrete cylinder 5 (i.e. the one concrete cylinder 5 that was previously sucked from the hopper 1) and the piston 4 in that cylinder makes the next filling movement. In this way, the piston 4 in the concrete cylinder 5 repeatedly reciprocates through the left-and-right swing of the S pipe 2, so as to realize continuous pumping of the filling slurry. The swing power of the S pipe 3 is derived from the acting force of a hydraulic power system connected with an S valve type piston filling industrial pump for driving the swing oil cylinder 6.
The S-valve piston type filling industrial pump has the defects that when the S-pipe 3 is rotated from one concrete cylinder 5 to another concrete cylinder 5 (generally, about 2 seconds are consumed), the piston heads of the pistons 4 in the concrete cylinders 5 are not sealed with the S-pipe 3 when the positions of the S-pipe 3 and the concrete cylinders 5 are staggered, so that a small amount of pressure is released in a pumping and filling pipeline system, the filled slurry in the filling pipeline flows back, the impact is caused to the S-valve type piston type filling industrial pump, and the working benefit is influenced. The effect is more severe if pumping to high positions.
In summary, since the structural principle of the S-valve type piston filling industrial pump determines that the delivery power is intermittent, the short-time reversing of the S-tube 3 in the S-valve type piston filling industrial pump is a pressure relief process each time. Therefore, it is determined that the filling slurry at a high position when the filling slurry is upwards can generate a certain impact on the S valve type piston type filling industrial pump, and the working benefit is reduced.
Therefore, how to avoid the impact of the filling slurry on the S-valve type piston filling industrial pump is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a check valve assembly and a pumping and filling pipe system provided with the check valve assembly, which can prevent the impact of filling slurry on an S-valve type piston filling industrial pump.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a check valve assembly, comprising:
the valve body comprises a shell, a valve core and a valve body oil cylinder, a feed inlet on the shell is matched with an outlet of an S-valve type piston type filling industrial pump in a pumping filling pipeline system, the valve body oil cylinder drives the valve core to move to an extreme position in the shell, the shell is closed, and the valve body oil cylinder drives the valve core to leave the extreme position and is communicated with the shell;
the first electromagnetic reversing valve group is used for controlling the valve body oil cylinder;
the S pipe in the S valve type piston filling industrial pump is driven to swing by a swing oil cylinder, the swing oil cylinder is controlled by the second electromagnetic reversing valve group, and the first electromagnetic reversing valve group and the second electromagnetic reversing valve group are arranged in parallel and act synchronously;
when the second electromagnetic reversing valve group controls the S pipe to swing, the first electromagnetic reversing valve group controls the valve core to be in the limit position;
and when the second electromagnetic reversing valve group controls the S pipe to stop, the first electromagnetic reversing valve group controls the valve core to leave the limit position.
Preferably, in the above check valve assembly, an electromagnetic regulating valve group is disposed between the valve body cylinder and the first electromagnetic reversing valve group, and the electromagnetic regulating valve group includes:
a superposition type double overflow valve with protection function in the oil path;
and/or, a stacked double one-way throttle valve playing a role in throttling and speed regulation in the oil way;
and/or a stacked one-way valve which plays a locking role in the oil path.
Preferably, in the check valve assembly, the diameters of the electromagnetic regulating valve group, the first electromagnetic reversing valve group and the second electromagnetic reversing valve group are identical.
Preferably, in the check valve assembly, two valve body cylinders are provided, and the two valve body cylinders are connected in parallel and respectively positioned at two sides outside the control pipe orifice and are arranged side by side with the valve core.
Preferably, in the check valve assembly, a manual key for controlling the valve core to be in the limit position is arranged on the first electromagnetic reversing valve group.
Preferably, in the check valve assembly, the housing is of a three-way structure, and the three-way structure comprises a feed inlet, a discharge outlet and a control pipe orifice which are communicated with each other;
the valve core is sleeved in the control pipe orifice, and a sealing piece is arranged between the valve core and the control pipe orifice;
one end of the valve core is positioned outside the control pipe orifice and is connected with the valve body oil cylinder, the valve body oil cylinder drives the valve core to be closed between the feeding port and the discharging port when the valve core moves to the limit position in the control pipe orifice, and the valve body oil cylinder drives the valve core to be communicated between the feeding port and the discharging port when the valve core leaves the limit position.
A pumped filling piping system provided with a check valve assembly as described above, and an S-valve type piston filling industrial pump, said check valve assembly being connected in series at the outlet of said S-valve type piston filling industrial pump;
the S pipe in the S valve type piston filling industrial pump is driven to swing by a swing oil cylinder, and the swing oil cylinder is controlled by the second electromagnetic reversing valve group;
the first electromagnetic reversing valve group in the check valve assembly and the second electromagnetic reversing valve group are arranged in parallel and act synchronously;
when the second electromagnetic reversing valve group controls the S pipe to swing, the first electromagnetic reversing valve group controls a valve core in the check valve assembly to be in an extreme position, and a shell in the check valve assembly is closed;
when the second electromagnetic reversing valve group controls the S pipe to stop, the first electromagnetic reversing valve group controls the valve core to leave the limit position, and the shell is communicated.
Preferably, in the pumping and filling pipeline system, the pumping and filling pipeline system further comprises a proximity switch, wherein the proximity switch is electrically connected with the first electromagnetic reversing valve group,
after the S pipe stops moving, the proximity switch feeds back an electric signal to the first electromagnetic reversing valve group so as to control the valve core to leave the limit position.
Preferably, in the pumping and filling pipeline system, the swing oil cylinder and the valve body oil cylinder are both supplied with oil by an S-valve oil pump, and the S-valve oil pump is a constant pressure pump with the displacement of ml/r.
Preferably, in the pumping and filling pipeline system, the oil is supplied to the swing oil cylinder and the valve body oil cylinder through two accumulators arranged in parallel.
According to the technical scheme, the check valve assembly and the pumping filling pipeline system provided with the check valve assembly provided by the invention have the advantages that the linear reciprocating motion of the valve core is synchronous with the left-right swinging motion of the S pipe in the S valve type piston filling industrial pump. When the S pipe stops, the shell is communicated, namely the valve body in the check valve assembly is opened, and slurry in the pumping and filling pipeline system is pumped normally. When the S pipe swings, the shell is closed by the valve core, namely, the valve body in the check valve assembly is closed, so that the pressure relief of a pumping filling pipeline system is prevented, and the backflow of slurry is prevented. Therefore, the check valve assembly and the pumping filling pipeline system provided with the check valve assembly can solve the problem of slurry backflow impact during S-pipe reversing.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the operation of an S-valve piston type industrial pump of the prior art;
FIG. 2 is a schematic diagram of the hydraulic pressure of an S-valve piston-type industrial pump of the prior art;
FIG. 3 is a schematic view of a check valve assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a housing in a check valve assembly according to an embodiment of the present invention;
FIG. 5 is a left cross-sectional view of FIG. 4;
fig. 6 is a schematic hydraulic diagram of a check valve assembly and an S-valve piston filling industrial pump according to an embodiment of the present invention.
Wherein,
1-hopper, 2-outlet, 3-S pipe, 4-piston, 5-concrete cylinder,
6-swinging oil cylinder, 7-second electromagnetic reversing valve group, 8-accumulator, 9-S valve oil pump,
10-a first connecting oil pipe, 11-a second connecting oil pipe, 12-a first electromagnetic reversing valve group,
13-check valve body, 14-hydraulic power unit,
131-valve body oil cylinder, 132-valve core, 133-shell, 134-electromagnetic regulating valve group.
Detailed Description
Aiming at the characteristics of filling slurry in a pumping filling pipeline system, the pressure in the filling pipeline and the structural principle of an S-valve type piston type filling industrial pump, the invention provides a novel check valve assembly suitable for the working conditions and the pumping filling pipeline system provided with the check valve assembly, and can avoid the impact of the filling slurry on the S-valve type piston type filling industrial pump.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 3 to 6, fig. 3 is a schematic structural diagram of a check valve assembly according to an embodiment of the present invention, fig. 4 is a schematic structural diagram of a housing in the check valve assembly according to an embodiment of the present invention, fig. 5 is a left cross-sectional view of fig. 4, and fig. 6 is a hydraulic schematic diagram of the check valve assembly according to an embodiment of the present invention combined with an S-valve type piston filling industrial pump.
The check valve assembly provided by the embodiment of the invention comprises a valve body and a first electromagnetic reversing valve group 12. The valve body comprises a shell 133, a valve core 132 and a valve body oil cylinder 131, wherein the first electromagnetic reversing valve bank 12 is used for controlling the valve body oil cylinder 131 in the valve body to act, and the valve body oil cylinder 131 drives the valve core 132 to act so as to control the opening and closing of the valve body (namely, the communication or the closing of the shell 133) through the control valve core 132.
Wherein:
the feed inlet of the shell 133 is matched with the outlet 2 of the S valve type piston type filling industrial pump in the pumping filling pipeline system, the valve body cylinder 131 drives the valve core 132 to move to the limit position in the shell 133, the shell 133 is closed, and the valve body cylinder 131 drives the valve core 132 to leave the limit position and the shell 133 is communicated;
the S pipe 3 in the S valve type piston filling industrial pump is driven to swing by the swing oil cylinder 6, the swing oil cylinder 6 is controlled by the second electromagnetic directional valve group 7, and the first electromagnetic directional valve group 12 and the second electromagnetic directional valve group 7 are consistent in specification, are arranged in parallel and synchronously act. That is, when the second electromagnetic directional valve group 7 controls the S pipe 3 to swing, the first electromagnetic directional valve group 12 controls the valve core 132 to be at the limit position, and the housing 133 is closed; when the second electromagnetic directional valve group 7 controls the S pipe 3 to stop, the first electromagnetic directional valve group 12 controls the valve core 132 to leave the limit position, and the shell 133 is communicated.
As can be seen from the above-described technical solution, in the check valve assembly provided by the embodiment of the present invention, the linear reciprocating motion of the valve core 132 is synchronized with the left-right swinging motion of the S-tube in the S-valve type piston filling industrial pump. When the S-tube is deactivated, the housing 133 is in communication, i.e., the valve body in the check valve assembly is open, and slurry in the pumped filling piping system is pumped normally. When the S pipe swings, the valve element 132 in the shell 133 is closed, namely, the valve body in the check valve assembly is closed, so that the pressure relief of a pumping filling pipeline system is prevented, and the slurry backflow is prevented.
Specifically, please refer to fig. 3 to 5, in the valve body described above:
the casing 133 is a three-way structure including a feed inlet, a discharge outlet and a control pipe orifice which are communicated with each other, the feed inlet of the casing 133 is adapted to the outlet 2 of the S-valve type piston-type filling industrial pump in the pumping and filling pipe system, i.e., in the pumping and filling pipe system for filling slurry upward, the feed inlet of the casing 133 in the check valve assembly is connected and communicated with the outlet 2 in the S-valve type piston-type filling industrial pump;
the valve core 132 is sleeved in a control pipe orifice of the shell 133, and a sealing piece is arranged between the valve core and the control pipe orifice so as to prevent filling slurry from overflowing; one end of the valve core 132 is positioned outside the control pipe orifice and is connected with the valve body oil cylinder 131, the valve body oil cylinder 131 drives the valve core 132 to be closed between the feed inlet and the discharge outlet when moving to the limit position in the control pipe orifice, and the valve body oil cylinder 131 drives the valve core 132 to be communicated between the feed inlet and the discharge outlet when leaving the limit position, namely, the check valve assembly slides in the control pipe orifice through the valve core 132 to control the opening and closing of a filling pipeline where the valve body is positioned.
Preferably, in the above check valve assembly, a valve body of a shutoff valve is employed as the valve body of the check valve assembly. The stop valve is a valve body designed for controlling the switch of the high-pressure filling pipeline, and the pressure-resistant grade and the adaptive medium are suitable for being used on the high-pressure filling pipeline. However, the present invention is not limited thereto, and the valve body in the check valve assembly may be customized according to actual needs, and the present invention is not limited thereto.
It should be noted that, the check valve assembly provided by the embodiment of the invention is a special device for preventing the backflow of filling slurry in a pumping filling pipeline system. The check valve on the typical tubing cannot be used on the pump-fill tubing because of the different media used and the pressure levels on the tubing.
In order to further optimize the above technical solution, as shown in fig. 6, in the check valve assembly provided in the embodiment of the present invention, an electromagnetic regulating valve group 134 is further provided between the valve body cylinder 131 and the first electromagnetic reversing valve group 12, and the electromagnetic regulating valve group 134 is specifically provided with: the hydraulic control system comprises a superposition type double overflow valve with a protective function in an oil way, a superposition type double one-way throttle valve with a throttle speed regulation function in the oil way and a superposition type one-way valve with a locking function in the oil way. The locking function means that the valve cylinder 131 can be accurately stopped at the working position, and cannot be changed in position due to leakage or external factors.
Specifically, the valve body cylinder 131 and the swing cylinder 6 have substantially the same specification, the first electromagnetic directional valve group 12 and the first electromagnetic directional valve group 7 have the same size, and the diameter of the electromagnetic regulating valve group 134 is the same as the diameters of the first electromagnetic directional valve group 12 and the first electromagnetic directional valve group 7.
Specifically, in the valve body, two valve body cylinders 131 are provided, and the two valve body cylinders 131 are respectively located at two sides outside the control pipe orifice and are arranged side by side with the valve core 132. When the valve is in operation, the two valve body cylinders 131 are connected in parallel, and external pressure oil enters the valve body cylinders 131 to drive the valve core 132 to move up and down.
In a specific embodiment, considering that when the S-valve type piston filling industrial pump temporarily stops working, the valve core 13 in the check valve assembly must be in a limit position to keep the housing 133 closed, a manual key for controlling the valve core 132 to be in the limit position needs to be further provided on the first electromagnetic directional valve group 12. Specifically, referring to fig. 6, the manual key causes the third electromagnet DT3 to be powered, so that the valve core 13 is at the limit position, and the housing 133 is closed.
Furthermore, an embodiment of the present invention provides a pumping and filling pipe system provided with a check valve assembly as described above and an S-valve type piston filling industrial pump, the check valve assembly being connected in series at the outlet 2 of the S-valve type piston filling industrial pump.
The S pipe 3 in the S valve type piston filling industrial pump is driven to swing by a swing oil cylinder 6, and the swing oil cylinder 6 is controlled by a second electromagnetic reversing valve group 7; the first electromagnetic directional valve group 12 used for controlling the valve body cylinder 131 in the check valve assembly is consistent with the specification of the second electromagnetic directional valve group 7 in size, and is arranged in parallel and synchronously acts. Thus, when the second electromagnetic directional valve group 7 controls the S pipe 3 to swing, the first electromagnetic directional valve group 12 controls the valve core 132 in the check valve assembly to be at the limit position, and the housing 133 in the check valve assembly is closed; when the second electromagnetic directional valve group 7 controls the S pipe 3 to stop, the first electromagnetic directional valve group 12 controls the valve core 132 to leave the limit position, and the shell 133 is communicated.
Specifically, the pumping and filling pipeline system further comprises a proximity switch, and the proximity switch is electrically connected with the first electromagnetic reversing valve set 12. After the S-pipe 3 stops, the proximity switch feeds back an electrical signal to the first electromagnetic directional valve group 12 to control the valve core 132 to leave the limit position.
Specifically, referring to fig. 3 to 5, a motor in the hydraulic power device 14 drives an oil pump to move, high-pressure oil generated by the oil pump is delivered to a first electromagnetic directional valve bank 12 in the check valve assembly through a first connecting oil pipe 10 or a second connecting oil pipe 11, and pressure oil is controlled to flow to a rod cavity or a rodless cavity of a valve body oil cylinder 131 by a manual directional valve on the first electromagnetic directional valve bank 12 to drive a valve core 132 of the check valve assembly to move up and down, so as to control the opening or closing of the check valve assembly.
In a specific embodiment, considering that the check valve assembly needs to synchronously and cooperatively act with the S pipe and the pressure level is the same, the swing oil cylinder 6 and the valve body oil cylinder 131 are both supplied with oil by the S valve oil pump 9, and the S valve oil pump 9 is a constant pressure pump with the discharge capacity of 45 ml/r. And, the swing cylinder 6 and the valve body cylinder 131 are supplied with high-pressure oil through two accumulators 8 provided in parallel.
Referring specifically to fig. 6, a hydraulic schematic of the combination of the check valve assembly and the S-valve piston-type filling industrial pump is shown.
Therefore, the swing power of the S pipe 3 is derived from the high pressure oil provided by the valve oil pump 9,S of the S valve oil pump 9, and enters the second electromagnetic reversing valve set 7 through the related control valve set, and the pressure oil enters the swing oil cylinder 6 (left swing valve oil cylinder or right swing valve oil cylinder) through the power supply or power failure of the second electromagnetic reversing valve set 7 so as to push the S pipe to swing left and right, and the effect of connecting the two accumulators 8 in parallel in the oil circuit is to ensure the instantaneous high thrust required by the swing of the S pipe 3, so that the quick and powerful reversing of the S pipe 3 is ensured.
And, the oil pipe is connected from the A, B two-point position (namely, the position parallel to the second electromagnetic reversing valve group 7) in the hydraulic system of the S-valve type piston filling industrial pump, the hydraulic oil enters the electromagnetic regulating valve group 134 after passing through the first electromagnetic reversing valve group 12 and then enters the rod cavity and the rodless cavity of the valve body oil cylinder 131 in the check valve assembly, so that high-pressure oil is provided for the valve body oil cylinder 131 to drive the valve core 132 in the check valve assembly to move in coordination with the S-pipe 3.
In the specific implementation, in order to ensure that the swing of the S pipe 3 and the switching of the valve core 132 are coordinated, that is, the valve core 132 closes the valve body when the S pipe 3 swings, and the valve core 132 opens the valve body when the S pipe 3 swings and stops, the logic relationship between power supply and power failure of 4 electromagnets on two electromagnetic reversing valve groups (the second electromagnetic reversing valve group 7 and the first electromagnetic reversing valve group 12) must be controlled. The second electromagnetic reversing valve group 7 and the first electromagnetic reversing valve group 12 are respectively composed of two three-position four-way reversing valves.
As can be seen from the schematic diagram, the first electromagnet DT1 or the second electromagnet DT2 is electrified, the S pipe starts to move leftwards or rightwards, at the moment, the third electromagnet DT3 obtains the necessary electric signal, the third electromagnet DT3 is electrified, the fourth electromagnet DT4 is deenergized, at the moment, the valve core closes the valve body, and the slurry in the filling pipeline is prevented from flowing backwards. After the S pipe swings in place, the proximity switch is used for feeding back an electric signal to enable the fourth electromagnet DT4 to be powered on, the third electromagnet DT3 is powered off, the valve core enables the valve body to be opened, and slurry enters the filling pipeline through the S pipe. The 4 electromagnets are powered off and powered on alternately, the S pipe circularly swings left and right, and the valve core continuously opens or closes the valve body, so that the non-return effect is achieved, and slurry is continuously conveyed to a high position in the filling pipeline.
In addition, in the pumping and filling pipeline system provided by the embodiment of the invention, the re-model design of the relevant part in the hydraulic system for controlling the action of the swing cylinder 6 for controlling the swing of the S pipe comprises the following steps:
because the S valve oil pump 9 supplies oil to the swing oil cylinder 6 and the valve body oil cylinder 134 at the same time, the displacement of the constant pressure pump selected in the prior art is too small, and the constant pressure pump with the displacement of 45ml/r (A10V 045DKO 1) is used for replacing the constant pressure pump with the displacement of 28ml/r (A10V 028DKO 1) which is originally used;
the accumulator 8 with the same specification is connected in parallel at the original position where the accumulator 8 is installed, and high-flow high-pressure oil is provided for reversing the swing oil cylinder 6 and the valve body oil cylinder 134, so that the reversing and lifting are fast and powerful;
as the S valve oil pump 9 is increased, the associated delivery tubing specifications are redesigned to match the system.
Through the design and the modification, the check valve assembly and the pumping and filling pipeline system provided by the embodiment of the invention are used for verifying the paste filling system for pumping the slurry to a high position under the condition of actual working conditions, have good running condition, play a role in check and achieve the design purpose.
Finally, it is further noted that relational terms such as first and second, and the like are 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. Moreover, the terms "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, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A check valve assembly, comprising:
the valve body comprises a shell (133), a valve core (132) and a valve body oil cylinder (131), wherein a feed inlet on the shell (133) is matched with an outlet (2) of an S-valve type piston type filling industrial pump in a pumping and filling pipeline system, the valve body oil cylinder (131) drives the valve core (132) to be closed when the valve core (132) moves to a limit position in the shell (133), and the valve body oil cylinder (131) drives the valve core (132) to be communicated with the shell (133) when the valve core (132) leaves the limit position;
a first electromagnetic directional valve group (12) for controlling the valve body cylinder (131);
the S pipe (3) in the S valve type piston filling industrial pump is driven to swing by a swing oil cylinder (6), the swing oil cylinder (6) is controlled by a second electromagnetic reversing valve group (7), and the first electromagnetic reversing valve group (12) and the second electromagnetic reversing valve group (7) are arranged in parallel and act synchronously;
when the second electromagnetic reversing valve group (7) controls the S pipe (3) to swing, the first electromagnetic reversing valve group (12) controls the valve core (132) to be at the limit position;
when the second electromagnetic reversing valve group (7) controls the S pipe (3) to stop, the first electromagnetic reversing valve group (12) controls the valve core (132) to leave the limit position.
2. The check valve assembly according to claim 1, wherein an electromagnetic regulating valve group (134) is provided between the valve body cylinder (131) and the first electromagnetic directional valve group (12), and the electromagnetic regulating valve group (134) includes:
a superposition type double overflow valve with protection function in the oil path;
and/or, a stacked double one-way throttle valve playing a role in throttling and speed regulation in the oil way;
and/or a stacked one-way valve which plays a locking role in the oil path.
3. The check valve assembly according to claim 2, wherein the solenoid valve group (134), the first solenoid valve group (12) and the second solenoid valve group (7) are identical in diameter.
4. The check valve assembly according to claim 1, wherein two valve body cylinders (131) are provided, and the two valve body cylinders (131) are connected in parallel and are respectively located at both sides outside a control orifice of the housing (133) and arranged side by side with the valve spool (132).
5. The check valve assembly of claim 1, wherein the first electromagnetic reversing valve set (12) is provided with a manual key for controlling the valve spool (132) to be in the limit position.
6. The check valve assembly of any of claims 1-5, wherein the housing (133) is a three-way structure including a feed port, a discharge port, and a control orifice in communication with one another;
the valve core (132) is sleeved in the control pipe orifice, and a sealing piece is arranged between the valve core (132) and the control pipe orifice;
one end of the valve core (132) is positioned outside the control pipe orifice and is connected with the valve body oil cylinder (131), the valve body oil cylinder (131) drives the valve core (132) to be closed between the feeding port and the discharging port when moving to the limit position in the control pipe orifice, and the valve body oil cylinder (131) drives the valve core (132) to be communicated between the feeding port and the discharging port when leaving the limit position.
7. Pumping and filling pipe system, characterized in that a check valve assembly according to any of claims 1-6 is provided, and an S-valve type piston filling industrial pump, said check valve assembly being connected in series at the outlet (2) of said S-valve type piston filling industrial pump;
the S-shaped valve type piston filling industrial pump comprises an S-shaped pipe (3) which is driven to swing by a swing oil cylinder (6), and the swing oil cylinder (6) is controlled by a second electromagnetic reversing valve group (7);
a first electromagnetic reversing valve group (12) in the check valve assembly is arranged in parallel with the second electromagnetic reversing valve group (7) and acts synchronously;
when the second electromagnetic reversing valve group (7) controls the S pipe (3) to swing, the first electromagnetic reversing valve group (12) controls a valve core (132) in the check valve assembly to be at a limit position, and a shell (133) in the check valve assembly is closed;
when the second electromagnetic reversing valve group (7) controls the S pipe (3) to stop, the first electromagnetic reversing valve group (12) controls the valve core (132) to leave the limit position, and the shell (133) is communicated.
8. Pumping and filling pipe system according to claim 7, characterized in that it further comprises a proximity switch electrically connected to the first electromagnetic directional valve group (12),
after the S pipe (3) stops, the proximity switch feeds back an electric signal to the first electromagnetic reversing valve group (12) so as to control the valve core (132) to leave the limit position.
9. Pumping and filling pipe system according to claim 7, characterized in that the swing cylinder (6) and the valve body cylinder (131) are both supplied with oil by an S-valve oil pump (9), the S-valve oil pump (9) being a constant pressure pump with a displacement of 45 ml/r.
10. Pumping and filling pipe system according to claim 7, characterized in that the oscillating cylinder (6) and the valve body cylinder (131) are supplied with oil by two accumulators (8) arranged in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128962.5A CN107725803B (en) | 2017-11-15 | 2017-11-15 | Check valve assembly and pumping and filling pipeline system |
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| CN201711128962.5A CN107725803B (en) | 2017-11-15 | 2017-11-15 | Check valve assembly and pumping and filling pipeline system |
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| CN107725803A CN107725803A (en) | 2018-02-23 |
| CN107725803B true CN107725803B (en) | 2024-04-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108661973B (en) * | 2018-05-18 | 2020-08-04 | 凯斯通阀门有限公司 | Automatic turnover control valve |
| CN111379588B (en) * | 2020-04-10 | 2024-07-12 | 昆明理工大学 | Mine filling slurry settlement segregation control system and method based on low-frequency pulse |
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| GB431785A (en) * | 1934-01-11 | 1935-07-11 | Airspeed 1934 Ltd | Improvements in or relating to liquid or hydraulically operated mechanism |
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| CN107725803A (en) | 2018-02-23 |
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