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Difference between single cylinder and multi-cylinder hydraulic cone crusher

We can see the difference between single cylinder and multi-cylinder hydraulic cone crusher from 11 aspects. It's so practical and worth collecting!
A suitable hydraulic cone breaker can improve efficiency and economic benefit, so the selection of crushing equipment should be carefully considered by mining enterprises. What's the difference between single cylinder and multi-cylinder? Today, the author compares the structure, adjusting device, lubricating system, fragile parts, crushing effect, output and other aspects to provide reference for you to choose and purchase equipment.

Comparison of structural composition
1. Single cylinder hydraulic cone breaker
It is mainly divided into six parts:
1) Upper rack assembly: upper rack, rolling mortar wall, cushion cap, upper rack body guard plate;
2) Lower rack assembly: lower rack, lower rack guard plate, lower rack lining plate, eccentric bushing, sealing barrel;
3) moving cone assembly: spindle, moving cone body and rolling mortar wall;
4) Drive shaft assembly: groove wheel, drive shaft, bearing, drive shaft frame, small bevel gear;
5) Eccentric sleeve assembly: counterweight ring, eccentric sleeve, bevel gear, spindle bushing;
6) Hydraulic cylinder assembly: middle friction disc, lower friction disc, hydraulic cylinder block, cylinder liner, cylinder bottom, displacement sensor.

Multi-cylinder hydraulic cone breaker
It mainly includes the following six parts:
1) Lower rack: rack, spindle, guide pin;
2) Eccentric sleeve: eccentric sleeve, balance ring, large bevel gear;
3) Drive part: drive shaft, bevel gear and sleeve;
4) Support sleeve: support sleeve, locking cylinder and locking nut;
5) adjusting ring: adjusting ring and rolling mortar wall;
6) Moving cone: body, broken wall, hammer head, spherical tile.

2. Comparisons of regulating devices for discharge ports
Single cylinder
In normal operation, the main shaft is moved or moved down (the main shaft floats up and down) by injecting or discharging oil to the main shaft cylinder through the oil pump, and the size of the discharge outlet is adjusted. This adjustment may cause the discharging port to be more difficult to lock when crushing hard ore.
Multi cylinder
The adjusting cap is adjusted by a hydraulic pusher or a hydraulic motor, thus driving the adjusting ring to rotate in the support sleeve (the fixed cone spiral rotates up and down) to achieve the adjusting effect. The advantage of this adjustment method is that the outlet is easy to lock.

3. Comparison of overload protection
Single Cylinder Iron Passing and Cleaning Cavity
When passing iron, the hydraulic oil is injected into the accumulator and the spindle falls down; after passing iron, the accumulator presses the oil back and the crusher runs normally. Hydraulic pumps are also used for cavity cleaning.
Overload protection of multi-cylinder
When the non-breakable foreign body passes through the crushing chamber or the machine is overloaded for some reason, the hydraulic insurance system realizes the insurance, the discharging port enlarges, and the foreign body is discharged from the crushing chamber. If the foreign body is stuck in the ore discharging port, the cavity cleaning system can be used to further increase the ore discharging port and make the foreign body discharged into the crushing chamber. Under the action of hydraulic system, the discharging outlet is automatically reset and the machine returns to normal operation.

4. Comparison of lubrication systems
Single cylinder
Oil is injected into two inlet ports, and one way enters from the lower end of the spindle, lubricating spherical bearings, spherical bushes, frame bushes and spindle bushes, and then lubricating large and small bevel gears.
The other way enters from the end of the transmission shaft, lubricates the bushing of the transmission shaft, and the last two routes of oil are discharged from the same outlet.
Multi cylinder
After an oil hole in the lower part of the machine enters the machine and reaches the middle part of the spindle, there are three branches: the inner and outer surface of the eccentric sleeve, the oil hole in the middle of the spindle reaches the ball bearing, and lubricates the large and small bevel gears through the channel;
The other is lubricated by the hole on the transmission shafting, and the return oil of the transmission bearing is also returned through the return oil hole on the lower part of the small bevel gear and the return oil hole on the dust cover.

5. comparison of parts supplying breaking force
Single cylinder
Single cylinder hydraulic cone breaking is similar to spring cone breaking. The spindle is combined with the moving cone body and is loaded by the bowl-shaped bush. Therefore, the spindle and the moving cone are equivalent to the base supporting, and the eccentric sleeve drives the spindle to provide breaking force.
Multi cylinder
The main shaft of multi-cylinder hydraulic cone breaking is short and thick. Its diameter can be designed to be large. It is directly supported by the frame (not in the eccentric sleeve). The bearing capacity of the multi-cylinder hydraulic cone breaking is high. The eccentric sleeve directly drives the cone to provide breaking force.
The difference of mechanical structure between single cylinder and multi cylinder cone breaker determines that the force acting on the frame is different when they break ore. The former bears tensile stress while the latter bears weakened tensile stress. Therefore, the multi cylinder cone breaker has advantages in the construction of the machine frame.

6. Comparison of fragile parts
Single cylinder
Non-standard vulnerable parts: cone sleeve, oil seal, rolling mortar wall, axle sleeve, pressure cap, cutting ring, broken wall, dust ring, upper and lower friction disc, oil retaining ring, frame bushing, middle friction ring, eccentric bushing.
Multi cylinder
Standard vulnerable parts: triangular belt, skeleton oil seal, O-ring, dust-proof ring, Yx-ring, Yz-ring;
Non-standard vulnerable parts: small bevel gear, axle sleeve, guard plate, eccentric sleeve lining, large bevel gear, upper friction disk, ball tile, broken cone, cone head, floating bushing, sealing ring, rolling mortar wall, rib guard plate.

7. Comparison of counterweight blocks
Single Cylinder: Heavy + Thick
Multi-cylinder: Heavy + Thin
This is because, for single cylinder cone breaking, when the spindle and the moving cone move towards the tight edge, the eccentric sleeve thickness side is at the wide edge, and the center of gravity of the whole moving cone is at the tight edge, so it is necessary to add a counterweight block on the eccentric sleeve thickness side to balance the whole moving cone. Moreover, when the spindle and the moving cone move towards the tight edge, the wide edge will accumulate a lot of material, which will form resistance to the moving cone moving towards the wide edge. The counterweight block is added to make the moving cone move towards the wide edge more easily.
The spindle of multi-cylinder hydraulic cone breaking is not moving, so the counterweight block only considers the eccentric sleeve.

8. Comparison of feeding modes
Generally speaking, single-cylinder and multi-cylinder hydraulic cone breaking can be full feed. There is no problem for the latter to realize full feeding with high bearing capacity, and it can utilize the lamination principle. Stone is crushed in the crushing chamber, and extruded at the same time, crushing and shaping at the same time, so the grain size of the discharged material is very good.
However, it should be noted that the full feeding is only the crushing chamber filled with materials, at this time, while ensuring the crushing efficiency, it can also ensure uniform wear.

9. Comparisons of crushing effect
The multi-cylinder hydraulic cone crushing and discharging outlet has high content of fine material, better crushing effect and good lamination crushing effect. The single cylinder hydraulic cone breaking has better breaking effect and large passing capacity.

10. Comparison of actual production volume
When crushing soft ores and weathered ores, the advantages of single cylinder hydraulic cone breaking are outstanding, while when crushing medium and high hard ores, the performance of multi-cylinder hydraulic cone breaking is more outstanding.
In terms of fine crushing of medium-hard ore or above, under the same specifications, multi-cylinder can produce more qualified products. Generally speaking, the harder the hardness, the greater the difference between the two.

11. Comparison of Use and Maintenance
The structure of single cylinder is simple and reliable: a hydraulic cylinder has simple and compact structure, low failure rate and low production cost (the simpler the structure of mechanical system, the lower the failure rate, the higher the reliability, the more stable the operation).
The top or side of the multi-cylinder can be disassembled and assembled, and the maintenance is quick and convenient: all parts can be disassembled and maintained from the top or side. The movable cone and the top cone are easy to disassemble and assemble without disassembling the frame and fastening the bolt, so that the daily replacement is more convenient.

To sum up, single cylinder and multi-cylinder conical crusher are high performance crushers, which have their own advantages and disadvantages due to their different structures. Compared with single cylinder, multi-cylinder is more advantageous in structure performance, maintenance, crushing efficiency and so on. Correspondingly, the price of multi-cylinder hydraulic cone breaking will be higher, which may also be a point that users will focus on when choosing.

Small reminder: At present, some small manufacturers only change the multi-cylinder hydraulic cone break from Simons cone break, and change the spring into hydraulic cylinder. The internal structure is the same, essentially Simmons. Users should be careful when choosing and purchasing.
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