CN212106412U - Closed pump station for crossheading crusher - Google Patents

Abstract

The utility model discloses a crossheading is closed pump station for breaker, including pressure filter, energy storage ware, overflow valve, flushometer, relief valve, plunger pump assembly, valve group, proportional valve, variable hydro-cylinder, oil supply pump, oil return filter and cooler, the plunger pump assembly includes the plunger pump, plunger pump and oil supply pump series connection, the plunger pump communicates with each other with A mouth and the B mouth of plunger pump assembly respectively through two pressure hydraulic fluid ports, the relief valve both ends connect A, B mouths respectively, the hydraulic fluid port is passed through respectively to the both ends of flushometer and connects A mouth and B mouth, and A mouth and B mouth are business turn over hydraulic fluid port, the access connection of overflow valve has the export of flushometer, the overflow valve communicates with each other through export and flushometer. The pump station can be used for a long time under the overload condition without shutdown maintenance, the motor is not directly connected to the machine body and is not easy to damage, and the size, the rotating speed and even the power of a load can be accurately monitored.

Description

Closed pump station for crossheading crusher

Technical Field

The utility model relates to a crossheading breaker drive technical field especially relates to a closed pump station for crossheading breaker.

Background

The crossheading crusher is underground fully-mechanized mining equipment and is used for crushing large coal and gangue to prevent transportation blockage, so that the coal and the gangue must be crushed by the crusher before being conveyed to a belt conveyor, which becomes an indispensable link in the underground coal seam mining process, wherein the most common crossheading crusher is a wheel type crusher, and the driving mode of the crossheading crusher is to crush lumps by using hammer head cutter teeth which rotate in a telling mode. But the closed pump station for the existing gate way crusher has the following disadvantages: 1. the motor, the fluid coupling 98 and the reducer have large volume and weight, and are inconvenient to install and maintain; 2. the hydraulic coupler is easy to spray liquid under the overload condition, and needs to be stopped for liquid filling maintenance, so that the production efficiency is influenced; 3. the motor is directly connected to the crusher body, and is large in vibration and easy to damage when working; 4. the load can not be accurately monitored, and the conditions that the trolley is pulled by a large horse to waste energy or the trolley cannot be dragged due to insufficient power and the like easily occur under the condition that the working condition is not clear.

Disclosure of Invention

An object of the utility model is to provide a closed pump station for crossheading breaker possesses and can use for a long time under the overload condition and need not shut down maintenance, motor not directly connect not the organism on not fragile, can accurate control load size, rotational speed power's characteristics even, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a closed pump station for a crossheading crusher comprises a pressure filter, an energy accumulator, an overflow valve, a flushing valve, a safety valve, a plunger pump assembly, a control valve group, a proportional valve, a variable oil cylinder, an oil supplementing pump, an oil returning filter and a cooler, wherein the plunger pump assembly comprises the plunger pump, the plunger pump is connected with the oil supplementing pump in series, the plunger pump is respectively communicated with an A port and a B port of the plunger pump assembly through two pressure oil ports, two ends of the safety valve are respectively connected with A, B ports, two ends of the flushing valve are respectively connected with the A port and the B port through oil ports, the A port and the B port are both oil inlet and outlet ports, an inlet of the overflow valve is connected with an outlet of the flushing valve, the overflow valve is communicated with the flushing oil ports through an outlet, the oil supplementing pump is connected with an inlet of the overflow valve and an inlet of the control valve group through an outlet, the outlet of the control, the variable oil cylinder piston rod is connected with the swash plate of the plunger pump, the oil return filter is arranged on the hydraulic oil tank, the inlet of the oil return filter is connected with the cooler, the outer side of the cooler is provided with an oil return port, the A, B port of the plunger pump assembly is connected with the energy accumulator, and the energy accumulator is connected with the pressure filter.

Preferably, two ends of the oil supplementing one-way valve are respectively connected with an oil supplementing way and a pressure oil way.

Preferably, the inlet of the oil supplementing pump is connected with the hydraulic oil tank, and the outlet of the oil supplementing pump is an oil supplementing oil path.

Preferably, an electric motor is connected to the plunger pump.

Preferably, the control valve group comprises an oil supplementing one-way valve, and the energy accumulator, the safety valve, the oil supplementing one-way valve and the pressure filter are all arranged in number.

Preferably, the cooler is water-cooled or air-cooled.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the closed pump station for the crossheading crusher of the utility model has no hydraulic coupler and no potential safety hazards such as hurting people by spraying liquid; the pump station motor is arranged at the far end, so that the random vibration of the body is avoided, and the service life is not influenced; the system can additionally increase a pressure sensor and a rotating speed sensor to monitor the rotating speed and the pressure, so that the torque and the power during working can be known, and the working state can be conveniently known; the speed regulation is convenient, the speed regulation can be realized by changing the current on the electromagnetic field proportional valve, and a frequency converter is not needed; the hydraulic drive is in flexible connection, and the low-speed large-torque motor can work at the maximum torque for a long time, so that the damage condition of parts due to overheating is avoided.

Drawings

Fig. 1 is a schematic diagram of the present invention.

In the figure: 1. a pressure filter; 2. an accumulator; 3. an overflow valve; 4. a flush valve; 5. a safety valve; 6. an oil-supplementing one-way valve; 7. a plunger pump; 8. a plunger pump assembly; 9. a control valve group; 10. a proportional valve; 11. a variable oil cylinder; 12. an oil replenishing pump; 13. an oil return filter; 14. a cooler; 17. a flushing oil port; 18. and an oil return port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a closed pump station for a crossheading crusher comprises a pressure filter 1, an energy accumulator 2, an overflow valve 3, a flush valve 4, a safety valve 5, a plunger pump 7, a plunger pump assembly 8, a control valve group 9, a proportional valve 10, a variable cylinder 11, an oil supplementing pump 12, an oil returning filter 13 and a cooler 14, wherein the plunger pump 7 and the oil supplementing pump 12 are connected in series, the oil supplementing pump 12 absorbs oil and fills the oil into the closed pump station, the plunger pump 7 drives a hydraulic motor on the crusher to rotate to drive a scraper conveyor to operate, controls the displacement of the plunger pump 7 and changes the output rotating speed of the scraper conveyor to play a role of stepless speed regulation, the plunger pump 7 is respectively communicated with an opening a and an opening B of the plunger pump assembly 8 through two pressure oil ports, two ends of the safety valve 5 are respectively connected with an opening A, B, two ends of the flush valve 4 are respectively connected with the opening a and the opening B through oil ports, and the opening, the flushing valve 4 is used for discharging fixed flow from the low-pressure end of two paths of oil to flush a motor shell, the inlet of the overflow valve 3 is connected with the outlet of the flushing valve 4, the overflow valve 3 is communicated with a flushing oil port 17 through the outlet, the oil supplementing pump 12 is connected with the inlet connected with the overflow valve 3 and the inlet of the control valve group 9 through the outlet, the outlet of the control valve group 9 is provided with a proportional valve 10, the outlet of the proportional valve 10 is provided with a variable oil cylinder 11, the piston rod of the variable oil cylinder 11 is connected with the swash plate of the plunger pump 7, an oil return filter 13 is arranged on a hydraulic oil tank, the inlet of the oil return filter 13 is connected with a cooler 14, the outer side of the cooler 14 is provided with an oil return port 18, flushed oil is discharged from the other oil drain port of the motor and is cooled through the cooler 14, the A, B port of the plunger pump assembly 8 is connected with the energy accumulator 2, the energy, the pressure filter 1 is used for filtering pollutants in a closed system, the overflow valve 3 is used for limiting oil supplementing pressure, the control valve group 9 comprises a one-way throttle valve and an electromagnetic proportional valve 10, the one-way throttle valve is used for limiting flow entering a variable oil cylinder 11 and playing a role of avoiding impact and keeping stability, the electromagnetic proportional valve 10 is used for changing the magnitude and direction of control pressure through input current and pushing the proportional valve 10 on a pump to act to change the pressure at two ends of the variable oil cylinder 11, the oil supplementing one-way valve 6 is connected with an opening A, an opening B and a plunger pump 7, a safety valve 5 is arranged between the opening A and the opening B, the safety valve 5 is used for protecting the system, oil is discharged from the safety valve 5 when the pressure exceeds the set pressure of the safety valve 5 and limits the maximum pressure, and the overflow valve 3, the flushing valve 4 and the safety valve 5 can be placed inside or outside the plunger pump assembly 8, the control valve group 9 can be placed outside the pump body or mounted on the pump body, the plunger pump 7 is a variable plunger pump 7, and the proportional valve 10 is electrically controlled or hydraulically controlled.

The working principle is as follows: an oil supplementing pump 12 absorbs oil and fills the oil into a closed pump station, a plunger pump 7 drives a hydraulic motor on a crusher to rotate to drive a scraper conveyor to operate, a pressure filter 1 is used for filtering pollutants in a closed system, an overflow valve 3 is used for limiting oil supplementing pressure, a flushing valve 4 is used for discharging fixed flow from a low-pressure end of two paths of oil to flush a motor shell, and the flushed oil is discharged from the other oil drainage port of the motor and is cooled by a cooler 14; the safety valve 5 is used for protecting the system, and when the pressure exceeds the set pressure of the safety valve 5, oil is discharged from the safety valve 5 to limit the maximum pressure; the control valve group 9 comprises a one-way throttle valve and an electromagnetic proportional valve 10, the one-way throttle valve is used for limiting the flow entering a variable oil cylinder 11 and playing a role of avoiding impact and keeping stable, the electromagnetic proportional valve 10 is used for changing the magnitude and direction of control pressure through input current, pushing the proportional valve 10 on a pump to act, changing the pressure at two ends of the variable oil cylinder 11, controlling the displacement of a plunger pump 7 and changing the output rotating speed of a scraper conveyor to play a role of stepless speed regulation, and the energy accumulator 2 is used for absorbing energy, absorbing shock and protecting a system.

In summary, the following steps: the closed pump station for the crossheading crusher of the utility model has no hydraulic coupler and no potential safety hazards such as hurting people by spraying liquid; the pump station motor is arranged at the far end, so that the random vibration of the body is avoided, and the service life is not influenced; the system can additionally increase a pressure sensor and a rotating speed sensor to monitor the rotating speed and the pressure, so that the torque and the power during working can be known, and the working state can be conveniently known; the speed regulation is convenient, the speed regulation can be realized by changing the current on the electromagnetic field proportional valve 10, and a frequency converter is not needed; the hydraulic drive is in flexible connection, and the low-speed large-torque motor can work at the maximum torque for a long time, so that the damage condition of parts due to overheating is avoided.

It is noted that, herein, relational terms such as first and second, and the like 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, 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a closed pump station for crossheading breaker, includes pressure filter (1), energy storage ware (2), overflow valve (3), flushometer (4), relief valve (5), plunger pump (7), plunger pump assembly (8), valve unit (9), proportional valve (10), variable hydro-cylinder (11), oil supplementing pump (12), oil return filter (13) and cooler (14), its characterized in that: the plunger pump assembly (8) comprises a plunger pump (7), the plunger pump (7) is connected with an oil supplementing pump (12) in series, the plunger pump (7) is respectively communicated with an opening A and an opening B of the plunger pump assembly (8) through two pressure oil ports, two ends of the safety valve (5) are respectively connected with an opening A, B, two ends of the flushing valve (4) are respectively connected with the opening A and the opening B through oil ports, the opening A and the opening B are both oil inlet and outlet ports, an inlet of the overflow valve (3) is connected with an outlet of the flushing valve, the overflow valve (3) is communicated with an oil flushing port (17) through an outlet, the oil supplementing pump (12) is connected with an inlet of the overflow valve (3) and an inlet of a control valve group (9) through an outlet, a proportional valve (10) is arranged at the outlet of the control valve group (9), a variable oil cylinder (11) is arranged at the outlet of the proportional valve (10), and a piston rod of the variable oil cylinder (11, oil return filter (13) set up on hydraulic tank, and the import of oil return filter (13) connects cooler (14), oil return opening (18) have been seted up to the outside of cooler (14), A, B mouth of plunger pump assembly (8) connect energy storage ware (2), energy storage ware (2) connect pressure filter (1).

2. The closed pump station for the gate trough crusher according to claim 1, characterized in that: the inlet of the oil supplementing pump (12) is connected with a hydraulic oil tank, and the outlet of the oil supplementing pump is an oil supplementing oil way.

3. The closed pump station for the gate trough crusher according to claim 1, characterized in that: the plunger pump (7) is connected with a motor.

4. The closed pump station for the gate trough crusher according to claim 1, characterized in that: the control valve group (9) comprises an oil-supplementing one-way valve (6), and the energy accumulator (2), the safety valve (5), the oil-supplementing one-way valve (6) and the pressure filter (1) are all arranged to be 2.

5. The closed pump station for the gate trough crusher according to claim 4, characterized in that: and two ends of the oil supplementing one-way valve (6) are respectively connected with an oil supplementing way and a pressure oil way.

6. The closed pump station for the gate trough crusher according to claim 1, characterized in that: the cooler (14) is water-cooled or air-cooled.

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