CN214390313U - Equipment for preventing cylinder explosion of multi-cylinder hydraulic cone crusher safety cylinder - Google Patents
Equipment for preventing cylinder explosion of multi-cylinder hydraulic cone crusher safety cylinder Download PDFInfo
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- CN214390313U CN214390313U CN202022673270.2U CN202022673270U CN214390313U CN 214390313 U CN214390313 U CN 214390313U CN 202022673270 U CN202022673270 U CN 202022673270U CN 214390313 U CN214390313 U CN 214390313U
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Abstract
The utility model discloses a device for preventing the cylinder explosion of a multi-cylinder hydraulic cone crusher safety cylinder, which relates to the field of mining equipment, and the structure comprises a safety cylinder, an energy accumulator, a hydraulic pump station, an electromagnetic valve, a hydraulic control one-way valve, a pressure relay and a plurality of connecting pipelines, wherein the plurality of safety cylinders are connected in parallel through the connecting pipelines, and each safety cylinder is provided with one energy accumulator connected on the connecting pipeline with a rod cavity; and a pressure relay is arranged on a pipeline for communicating the working oil port A of the electromagnetic valve with the oil inlet end of the safety cylinder and used for monitoring the pressure of the safety cylinder in real time so as to switch the electromagnetic valve. The utility model changes the single-acting safety cylinder into the double-acting safety cylinder, which not only can prevent the pollution problem of hydraulic oil after cylinder explosion, but also can have the function of cleaning the cavity cylinder, thereby simplifying the equipment; the capacity of the energy accumulator is shared by two-purpose safety cylinders, and each safety cylinder is provided with one energy accumulator, so that each safety cylinder is ensured to have enough buffer space.
Description
Technical Field
The utility model relates to a mining equipment's field, concretely relates to prevent equipment that multi-cylinder hydraulic cone crusher insurance jar explodes jar.
Background
A multi-cylinder hydraulic cone crusher is a typical crushing device for crushing hard materials in a medium and fine mode. It is developed on the basis of a spring cone crusher, the basic structure of which is similar to that of a spring cone crusher. The method is applied to various industries such as mining industry, metallurgy, building, chemical industry, electric power, traffic and the like. The safety cylinder of the multi-cylinder hydraulic cone crusher is a crushing force device for bearing the whole crusher, in the production and processing process of a mine, superhard or iron foreign matters inevitably enter a damaged cavity to cause instantaneous overlarge crushing force, and if the design defect or the maintenance of the safety cylinder is not in place at the moment, the safety cylinder has a very large possibility of cylinder explosion.
The working principle of the safety cylinder is explained below by taking a 1600-type multi-cylinder hydraulic cone crusher produced by a certain company as an example, and the reason for frequent cylinder explosion of the equipment is pointed out. As shown in fig. 1, the apparatus has a total of 8 single acting safety cylinders (01), both of which have rod chambers connected to a 20L accumulator (02). When the safety cylinder works normally, the rod cavity of the safety cylinder normally keeps the pressure of about 12MPa, the cylinder diameter phi of the hydraulic cylinder is 300mm, the piston rod diameter phi is 100mm, and the total tension of 8 safety cylinders is calculated to be about 365 t. Under normal conditions, the pulling force of the safety cylinder with the material hardness smaller than the design value is enough to bear the crushing force of the crusher, when superhard or iron foreign matters enter the crushing cavity, the crushing force is increased sharply, the crushing force exceeds the pulling force of the safety cylinder, hydraulic oil of the safety cylinder flows back to the energy accumulator, the safety cylinder extends out, the foreign matters are discharged out of the crushing cavity, and the energy accumulator plays a role in buffering so as to achieve the purpose of protecting the crusher. The cylinder explosion phenomenon of the safety cylinder often occurs due to the design defect of the equipment and the maintenance of the equipment is not in place; after the cylinder is exploded, the hydraulic oil on site is scattered to the ground, which causes environmental pollution.
The design defects are as follows: assuming that an iron foreign matter with the diameter of about 300mm enters the crusher, the taper of the movable cone is about 90 degrees, the eccentricity is 30mm, the distance moved on a certain point of the ore discharge port of the movable cone after rotating for a circle is 240/1.414 approximately equal to 170mm, the distance moved up by the corresponding hydraulic cylinder (03) is about 170mm, the hydraulic oil discharged by a single hydraulic cylinder is about 11L, and the hydraulic oil discharged by two hydraulic cylinders is 22L, so that the energy accumulator is obviously selected to be too small. Assuming that an iron foreign matter with the diameter of about 100mm enters the crusher, hydraulic oil discharged by a single hydraulic cylinder is about 1.7L, the swing speed of the crusher is 300r/min, the inner diameter of a hydraulic oil pipe connected with the energy accumulator and the safety cylinder is about 10mm, the length of the hydraulic oil pipe is about 1000mm, the flow rate of the hydraulic oil is about 108m/s, the pressure P of the safety cylinder is 54+3+12 is 69MPa according to the Bernoulli equation, wherein the pressure P is delta P (along-path pressure loss) + delta P1 (local pressure loss) + the pressure of the energy accumulator (about 12 MPa), and the value is far larger than the bearable range of the safety cylinder.
Maintenance is not in place: because the condition of the energy accumulator is not checked in time, the energy accumulator cannot play a buffering role due to the damage or the air shortage of a leather bag of the energy accumulator, and the cylinder explosion of the safety cylinder is easily caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide a prevent that multi-cylinder hydraulic cone crusher insurance jar from exploding equipment of jar, it is good to have an energy storage ware buffering effect, and pressure on-line monitoring avoids exploding the advantage that the jar takes place.
The purpose of the utility model is accomplished through following technical scheme: the equipment for preventing the cylinder explosion of the safety cylinder of the multi-cylinder hydraulic cone crusher comprises the safety cylinder, energy accumulators, a hydraulic pump station, electromagnetic valves, hydraulic control one-way valves, a pressure relay and a plurality of connecting pipelines, wherein rod cavities and rodless cavities of a plurality of double-acting safety cylinders are respectively connected in parallel through the connecting pipelines, the oil inlet end of the safety cylinder is arranged on the connecting pipeline of the rod cavity, the oil outlet end of the safety cylinder is arranged on the connecting pipeline of the rodless cavity, and each safety cylinder is provided with one energy accumulator which is connected to the connecting pipeline of the rod cavity; a liquid outlet of the hydraulic pump station is communicated with an oil inlet P of the electromagnetic valve, a liquid inlet of the hydraulic pump station is communicated with an oil return port T of the electromagnetic valve, and a working oil port A of the electromagnetic valve is communicated with an oil inlet end of the safety cylinder through a hydraulic control one-way valve and is used for pressurizing the safety cylinder; a working oil port B of the electromagnetic valve is communicated with the oil outlet end of the safety cylinder, and a branch is arranged on the connecting pipeline and is used for communicating a control port of the hydraulic control one-way valve; and a pressure relay is arranged on a pipeline for communicating the working oil port A of the electromagnetic valve with the oil inlet end of the safety cylinder and used for monitoring the pressure of the safety cylinder in real time so as to switch the electromagnetic valve.
As a preferred technical scheme, each energy accumulator is provided with an online pressure detection device for detecting the bladder pressure of the energy accumulator.
As the preferred technical scheme, each energy accumulator is provided with an overflow safety valve for communicating the connecting pipeline of the rod cavity with the connecting pipeline of the rodless cavity.
Preferably, the pressure setting of the overflow safety valve is selected according to the model and material characteristics of the hydraulic cone crusher.
As a preferable technical scheme, the capacity of the energy accumulator is calculated and selected according to the cavity type of the hydraulic cone crusher.
As a preferred technical scheme, the safety cylinder is directly connected with a hard pipe outlet mounting joint of the corresponding energy accumulator.
Preferably, the electromagnetic valve is a Y-shaped electromagnetic directional valve.
The method for preventing the cylinder explosion of the multi-cylinder hydraulic cone crusher safety cylinder comprises the following steps:
1) starting a hydraulic pump station, switching an electromagnetic valve to a left position to communicate an oil inlet P with a working oil port A, and pressurizing the working oil port A to a safety cylinder through a hydraulic control one-way valve;
2) the pressure relay monitors the pressure of the safety cylinder in real time, when the pressure reaches a preset value, the electromagnetic valve is controlled to be switched to a middle position, the oil inlet P is disconnected with the working oil port A, and the hydraulic control one-way valve maintains the pressure of the safety cylinder, so that the hydraulic cone crusher is switched to a normal working condition to work;
3) when the pressure of the safety cylinder is detected by the pressure relay to be lower than a preset value, the control electromagnetic valve is switched to a middle position, and the operations in the step 1) and the step 2) are repeated, so that the pressure of the safety cylinder is ensured to be in a normal range.
The utility model has the advantages that:
1. the single-acting safety cylinder is changed into the double-acting safety cylinder, so that the problem of hydraulic oil pollution after cylinder explosion can be solved, the function of cleaning the cavity cylinder can be realized, and the equipment is simplified;
2. the capacity of the energy accumulator is shared by two-purpose safety cylinders, and each safety cylinder is provided with one energy accumulator, so that each safety cylinder is ensured to have enough buffer space; and a set of overflow safety valve is additionally arranged for the energy accumulator to ensure that the pressure does not exceed a set value;
3. the connection between the safety cylinder and the energy accumulator is changed into a direct connection of a hard pipe outlet, the safety cylinder and the energy accumulator are connected by only one joint, the distance is shortened, the oil outlet of a rod cavity of the safety cylinder is directly enlarged, the flow rate of hydraulic oil is reduced, and therefore the on-way pressure loss in the buffering process is reduced, and the pressure of the safety cylinder is reduced;
4. the accumulator adds on-line pressure detection device, in time detects accumulator leather bag pressure, and the safety cylinder damage that causes has been avoided maintaining inadequately to the discovery problem.
Drawings
Fig. 1 is a schematic structural diagram of a conventional multi-cylinder hydraulic cone crusher.
Fig. 2 is a schematic structural diagram of the present invention.
Description of reference numerals: the device comprises a safety cylinder 01, an energy accumulator 02, a hydraulic cylinder 03, a hydraulic pump station 04, an electromagnetic valve 05, a hydraulic control one-way valve 06, a pressure relay 07, an online pressure detection device 08 and an overflow safety valve 09.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
example (b): as shown in the attached figure 2, the device for preventing the cylinder explosion of the safety cylinder of the multi-cylinder hydraulic cone crusher comprises a safety cylinder 01, an energy accumulator 02, a hydraulic pump station 04, an electromagnetic valve 05, a hydraulic control one-way valve 06, a pressure relay 07 and a plurality of connecting pipelines, wherein rod cavities and rodless cavities of a plurality of double-acting safety cylinders 01 are respectively connected in parallel through the connecting pipelines, oil inlet ends of the safety cylinders are arranged on the connecting pipelines of the rod cavities, oil outlet ends of the safety cylinders are arranged on the connecting pipelines of the rodless cavities, each safety cylinder 01 is provided with one energy accumulator 02 to be connected to the connecting pipelines of the rod cavities, so that each safety cylinder 01 is ensured to have enough buffer space, and preferably, the capacity of the energy accumulator 02 is calculated and selected according to the cavity type of the hydraulic cone crusher; meanwhile, each energy accumulator 02 is provided with an overflow safety valve 09 to communicate a rod cavity connecting pipeline with a rodless cavity connecting pipeline, so that the pressure in the energy accumulator 02 cannot exceed a set value (preferably, the pressure of the overflow safety valve 09 is set according to the type and material characteristics of a hydraulic cone crusher), and each energy accumulator 02 is provided with an online pressure detection device 08 for detecting the leather bag pressure of the energy accumulator 02 in real time, so that the damage to the safety cylinder 01 caused by improper maintenance is avoided.
The electromagnetic valve 05 is a Y-shaped electromagnetic directional valve. A liquid outlet of the hydraulic pump station 04 is communicated with an oil inlet P of the electromagnetic valve 05, a liquid inlet of the hydraulic pump station 04 is communicated with an oil return port T of the electromagnetic valve 05, and a working oil port A of the electromagnetic valve 05 is communicated with an oil inlet end of the safety cylinder through a hydraulic control one-way valve 06 and is used for pressurizing the safety cylinder 01; a working oil port B of the electromagnetic valve 05 is communicated with an oil outlet end of the safety cylinder, and a branch is arranged on the connecting pipeline and is used for communicating a control port of the hydraulic control one-way valve 06; and a pressure relay 07 is arranged on a pipeline for communicating the working oil port A of the electromagnetic valve 05 with the oil inlet end of the safety cylinder and is used for monitoring the pressure of the safety cylinder 01 in real time so as to switch the electromagnetic valve 05. The safety cylinder 01 is directly connected with a hard pipe outlet of the corresponding energy accumulator 02, only one joint is arranged between the safety cylinder 01 and the hard pipe outlet, the distance is shortened, an oil outlet of a rod cavity of the safety cylinder 01 is directly enlarged, the flow speed of hydraulic oil is reduced, the on-way pressure loss in the buffering process is reduced, and the pressure of the safety cylinder 01 is reduced.
The method for preventing the cylinder explosion of the multi-cylinder hydraulic cone crusher safety cylinder comprises the following steps:
1) starting the hydraulic pump station 04, switching the electromagnetic valve 05 to the left position to communicate the oil inlet P with the working oil port A, and pressurizing the working oil port A to the safety cylinder 01 through the hydraulic control one-way valve 06;
2) the pressure relay 07 monitors the pressure of the safety cylinder 01 in real time, when the pressure reaches a preset value, the control electromagnetic valve 05 is switched to a middle position, the oil inlet P is disconnected with the working oil port A, and the hydraulic control one-way valve 06 maintains the pressure of the safety cylinder 01, so that the hydraulic cone crusher is switched to a normal working condition to work;
3) when the pressure relay 07 detects that the pressure of the safety cylinder 01 is lower than a preset value, the control solenoid valve 05 is switched to a neutral position, and the operations in the step 1) and the step 2) are repeated, so that the pressure of the safety cylinder 01 is ensured to be in a normal range.
The utility model discloses a theory of operation: the hydraulic pump station 04 provides hydraulic pressure, the electromagnetic valve 05 is switched to the left position, the safety cylinder 01 is pressurized, after the pressure reaches the pressure relay 07 to adjust the pressure, the electromagnetic valve 05 is automatically switched to the middle position, and the hydraulic control one-way valve 06 maintains the pressure at the moment. When the pressure of the safety cylinder 01 is reduced to be lower than the pressure adjusted by the pressure relay 07, the electromagnetic valve 05 is automatically switched to the left position for pressurizing, after the pressure reaches the pressure adjusted by the pressure relay 07, the electromagnetic valve 05 is automatically switched to the middle position, and the operation is repeated in such a circulating way, so that the pressure of the safety cylinder 01 is automatically ensured to be in a normal range.
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (7)
1. The utility model provides a prevent equipment that multi-cylinder hydraulic cone crusher insurance jar explodes jar which characterized in that: the hydraulic control safety device comprises safety cylinders (01), energy accumulators (02), a hydraulic pump station (04), an electromagnetic valve (05), a hydraulic control one-way valve (06), a pressure relay (07) and a plurality of connecting pipelines, wherein rod cavities and rodless cavities of the double-acting safety cylinders (01) are respectively connected in parallel through the connecting pipelines, the oil inlet end of the safety cylinder is arranged on the connecting pipeline of the rod cavity, the oil outlet end of the safety cylinder is arranged on the connecting pipeline of the rodless cavity, and each safety cylinder (01) is provided with one energy accumulator (02) to be connected to the connecting pipeline of the rod cavity; a liquid outlet of the hydraulic pump station (04) is communicated with an oil inlet P of the electromagnetic valve (05), a liquid inlet of the hydraulic pump station (04) is communicated with an oil return port T of the electromagnetic valve (05), and a working oil port A of the electromagnetic valve (05) is communicated with an oil inlet end of the safety cylinder through a hydraulic control one-way valve (06) and is used for pressurizing the safety cylinder (01); a working oil port B of the electromagnetic valve (05) is communicated with the oil outlet end of the safety cylinder, and a branch is arranged on the connecting pipeline and is used for communicating a control port of the hydraulic control one-way valve (06); and a pressure relay (07) is arranged on a pipeline communicated with the working oil port A of the electromagnetic valve (05) and the oil inlet end of the safety cylinder and used for monitoring the pressure of the safety cylinder (01) in real time so as to switch the electromagnetic valve (05).
2. The apparatus of claim 1, wherein the apparatus is adapted to prevent the cylinder from being exploded by a safety cylinder of a multi-cylinder hydraulic cone crusher, and further comprising: each energy accumulator (02) is provided with an online pressure detection device (08) for detecting the bladder pressure of the energy accumulator (02).
3. The apparatus of claim 1, wherein the apparatus is adapted to prevent the cylinder from being exploded by a safety cylinder of a multi-cylinder hydraulic cone crusher, and further comprising: each energy accumulator (02) is provided with an overflow safety valve (09) which is used for communicating the connecting pipeline of the rod cavity with the connecting pipeline of the rodless cavity.
4. The apparatus of claim 3, wherein the apparatus is adapted to prevent the cylinder from being exploded by a safety cylinder of a multi-cylinder hydraulic cone crusher, and further comprising: the pressure setting of the overflow safety valve (09) is selected according to the model and the material characteristics of the hydraulic cone crusher.
5. The apparatus of claim 1, wherein the apparatus is adapted to prevent the cylinder from being exploded by a safety cylinder of a multi-cylinder hydraulic cone crusher, and further comprising: and the capacity of the energy accumulator (02) is calculated and selected according to the cavity type of the hydraulic cone crusher.
6. The apparatus of claim 1, wherein the apparatus is adapted to prevent the cylinder from being exploded by a safety cylinder of a multi-cylinder hydraulic cone crusher, and further comprising: the safety cylinder (01) is directly connected with a hard tube outlet mounting joint corresponding to the energy accumulator (02).
7. The apparatus of claim 1, wherein the apparatus is adapted to prevent the cylinder from being exploded by a safety cylinder of a multi-cylinder hydraulic cone crusher, and further comprising: the electromagnetic valve (05) is a Y-shaped electromagnetic directional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022673270.2U CN214390313U (en) | 2020-11-18 | 2020-11-18 | Equipment for preventing cylinder explosion of multi-cylinder hydraulic cone crusher safety cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022673270.2U CN214390313U (en) | 2020-11-18 | 2020-11-18 | Equipment for preventing cylinder explosion of multi-cylinder hydraulic cone crusher safety cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN214390313U true CN214390313U (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022673270.2U Active CN214390313U (en) | 2020-11-18 | 2020-11-18 | Equipment for preventing cylinder explosion of multi-cylinder hydraulic cone crusher safety cylinder |
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| CN (1) | CN214390313U (en) |
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