WO2016015601A1 - High-efficiency energy-saving direct-drive sand making machine - Google Patents

Abstract

Disclosed is a high-efficiency energy-saving direct-drive sand making machine, comprising a sand making machine shell (1), an impeller (2), a motor (3), a motor bracket (5), a motor sealing pressing plate (6) and a peripheral guard plate, wherein the impeller (2) is located in the sand making machine shell (1), and is directly mounted on a shaft of the motor (3); the motor (3) is mounted in the motor bracket (5); and the peripheral guard plate is mounted between the sand making machine shell (1) and the impeller (2). The motor bracket (5) comprises an outer shell (51), an upper end plate (52), a lower end plate (53), an inner shell (54), an upper support plate (55), a lower support plate (56), a guide plate (57) and sealing plates (58), wherein the two sealing plates (58) on the left and on the right and the guide plate (57) are combined with the inner shell (54), the upper support plate (55), the lower support plate (56) and the outer shell (51) to form a closed space for sealing the motor (3). By adopting a structure where the impeller and the motor are coaxially directly coupled and directly driven, compared with an existing non-coaxial indirect-drive sand making machine, the present invention has the advantages of high transmission efficiency, long service life of the motor, etc.

Description

Energy efficient direct drive sand making machine Technical field

The invention relates to the technical field of sand making machines, in particular to an energy efficient direct drive type sand making machine.

Background technique

As the scale of urban and rural construction continues to expand, the supply and demand of construction materials such as river sand is dissatisfied. In addition, the river sandstone resources in most parts of China are gradually depleted, and the Ministry of Water Resources has strict regulations and restrictions on the dredging of navigation channels, so there are not many sandstones that can be mined. At present, the building materials market has been in strong demand for a long time, while the supply market has gradually shrunk, which has caused the price of sand and graves to rise. In this case, the emergence of machine sand has undoubtedly solved a major problem for the construction industry. The machine sand contains almost all the characteristics of high-quality sand. The mechanical processing effectively solves the stringent requirements of various construction projects on the hardness, strength and wear resistance of the sand, and makes the characteristics of the mechanism sand better.

The machine-made sand refers to the sand processed by the sand production line equipment. The sand has the advantages of finished product rules, good grain shape and reasonable grading. In actual production, sand can be processed into different rules and sizes according to different process requirements. More able to meet daily needs. The use of machine sand is critical to ecological environmental protection. According to information from the China Sand and Stone Association, in recent years, China's sand and gravel industry has maintained a stable development momentum. The exploitation and use of natural sandstone has been controlled, and the mechanism sandstone has gradually entered the market. The expansion of the market for applied sands also indicates that the overall level of the sand and gravel industry in China is improving.

The existing sand making machines are all indirect driven sand making machines with different axes. The structure is shown in Figure 1. It includes the sand making machine shell 1, the impeller 2, the motor 3 and the sand making machine frame 4; the impeller 2 is located In the casing 1 of the sand making machine, the impeller shaft is connected with the motor shaft through a pulley and a belt; the two motors 3 are all mounted on the sand machine frame 4, and the sand machine foot is arranged at the lower end of the sand making machine frame 4. The sand machine feet are fixed on the ground with anchor bolts. A peripheral guard plate is further disposed between the outer casing 1 and the impeller 2. The structure of the existing peripheral shield is shown in FIG. 2-3. The peripheral shield includes a body 1-1 on the upper top surface and the lower bottom surface of the body 1-1. The upper bump 1-1-1 and the lower bump 1-1-2 are respectively provided, and the upper bump 1-1-1 and the lower bump 1-1-2 are integrally formed with the body 1-1. The sander casing 1 is welded integrally with the upper support plate 1-2, the lower support plate 1-3 and the support block 1-4, and the body 1-1 is mounted on the lower support plate 1-3 and fixed to the upper support by a compression bolt. Board 1-2.

During work, there are stones falling from the vertical direction in the gap between the 2 rounds of the sandblasting blade and the peripheral shield. The sandblasting impeller 2 rotates at a high speed, and the stone in the impeller 2 is thrown at a high speed from the outer circle of the impeller 2 in the tangential direction, and falls. The stones are effectively collided. Since the falling stones are gapped, a part of the stones thrown from the impeller 2 at a high speed will effectively collide with the surface of the peripheral shield to make the stones become sand.

In the present invention, since the impeller shaft and the motor shaft are different axes, the motor must drive the impeller through the belt. Its The downsides are:

1. It is easy to slip between the belt and the pulley to reduce the transmission efficiency.

2. It is difficult to ensure the same speed of the two motors, so that the overall transmission efficiency of the two motors is reduced.

3. There is more dust on the sand making site, and the environment is relatively harsh. Small sandstone easily flies between the belt and the pulley. This will not only increase the wear of the belt and the pulley and the motor, but also easily lead to slippage and reduce the transmission efficiency.

4. The structure of the whole machine is complex and cumbersome, and the production cost and running cost are relatively high.

5. Since the existing perimeter guards are monolithic structures, they are made of wear-resistant materials with a price of up to 3-4 million yuan/T. The body 1 wears faster, and the upper bumps 1-1 and the lower bumps 1- 2 Basically no wear, and mainly the middle section of the body 1 wears faster, and the wear at both ends is smaller. When the middle section of the body 1 is worn to a certain extent, the entire peripheral shield must be replaced, and the use cost is high.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide an energy efficient direct drive type sand making machine for solving the problem of low transmission efficiency and wear of belts and pulleys and motors.

The technical scheme of the invention is: an energy-efficient direct-drive type sand making machine, comprising a sand making machine shell, an impeller, a motor, a motor bracket, a motor sealing pressure plate and a peripheral guard plate, the impeller is located in the shell of the sand making machine, and the direct Installed on the motor shaft, the motor is installed in the motor bracket, and the peripheral guard plate is installed between the shell of the sand making machine and the impeller; the motor bracket includes a shell, an upper end plate, a lower end plate, an inner shell, an upper support plate, a lower support plate, a guide plate and a sealing plate, the outer casing has a tubular shape with open ends, and a movable door is arranged thereon; the upper end plate is located at the top of the outer casing, and the lower end plate is located at the bottom of the outer casing; the upper end plate, the upper supporting plate and the lower supporting plate have the power feeding machine in and out The inner casing has a tubular shape with open ends, and has a hole through which the power supply wire passes. The inner casing is located inside the outer casing, and has a motor seat at the top and a motor sealing plate at the bottom; the inner edge of the upper support plate and the upper part of the inner casing or the motor The base is connected, the outer edge is connected with the outer casing; the inner edge of the lower support plate is connected with the inner casing or the motor sealing plate, and the outer edge is connected with the outer casing; the upper end of the guide plate is fixedly connected with the upper support plate and sealed, and the lower end is fixed to the upper end of the sealing plate. The lower end of the sealing plate is fixedly connected and sealed to the lower supporting plate, and the front and rear ends of the sealing plate are fixedly connected and sealed to the outer casing, that is, the left and right sealing plates and the guiding plate and the inner casing, the upper supporting plate and the lower part The support plate and the outer casing combine to form an enclosed space for the sealed motor.

A further technical solution of the present invention is that the diameter of the rear end cover of the motor is larger than the diameter of the outer cover of the motor, so that the joint between the rear end cover and the motor outer cover forms a step, and the motor sealing pressure plate is circular, which passes through the elastic cushion and The screw is fixedly mounted on the bottom of the motor sealing plate, and the inner ring is located at the step of combining the rear end cover of the motor and the outer cover of the motor to form a seal on the bottom plane of the rear end cover of the motor.

A further technical solution of the present invention is that the movable door of the outer casing or the outer casing has a hole through which the power supply wire passes, and a sealing ring is arranged between the electric wire and the hole to seal it.

A further technical solution of the present invention is: a partition between the upper and lower support plates; the main body of the motor Installed in the motor bracket, the motor junction box is installed outside the partition of the motor bracket, and the partition and the inner casing have holes for the lead wires of the junction box to pass through, one end of the motor lead wire is connected with the motor main body, and the other end passes through The holes in the partition and the inner casing are connected to the junction box.

According to still another technical solution of the present invention, the motor is a full water-cooled motor, which comprises a rear outer pressure cover, a rear bearing, a rear end cover, a rear inner pressure cover, a water supply case, a stator, a rotor, a front inner pressure cover, and a front end cover. The front bearing, the front outer gland and the motor shaft are formed; the front bearing is mounted on the motor shaft, and is positioned by a front outer gland and a front inner gland mounted on the motor shaft, and the front end cover is set on the outer ring of the front bearing The front outer gland, the front inner gland and the front end cover are fixedly connected to lock the front bearing; the rear bearing is mounted on the motor shaft, and is positioned by a rear outer gland and a rear inner gland mounted on the motor shaft The rear end cover is set on the outer ring of the rear bearing, and the rear outer gland, the rear inner gland and the rear end cover are fixedly connected to lock the rear bearing; the rear end cover has a rear bearing cooling channel and the outer ring The nozzle, the organic shell cooling water channel on the water tank shell, and the front bearing cooling water channel and the water outlet on the outer ring of the front end cover.

According to still another technical solution of the present invention, there are a plurality of horizontal passages on the outer ring of the rear end cover, and each horizontal passage has a vertical passage communicating with the same; except for one horizontal passage directly connected to the water inlet, one end of the other horizontal passages It is connected to the rear bearing cooling channel and the other end is sealed by a plug.

According to still another technical solution of the present invention, the front cover has a plurality of horizontal passages on the outer ring, and each horizontal passage has a vertical passage communicating with the same; except for the horizontal passage directly connected to the water outlet, one end and the front of the remaining horizontal passages The bearing cooling water passage is connected, and the other end is sealed by a plug.

A further technical solution of the present invention is: the motor is a self-lubricating motor, including a motor and a bearing lubrication device; the motor includes a motor shaft, a front bearing, a rear bearing, a front outer gland, a front inner gland, a rear outer gland, a rear inner cover, a front end cover and a rear end cover; the front bearing is mounted on the motor shaft and is positioned by a front outer gland and a front inner gland mounted on the motor shaft, and the front end cover is fitted on the outer ring of the front bearing, The front outer gland, the front inner gland and the front end cover are fixedly connected to lock the front bearing; the rear bearing is mounted on the motor shaft, and is positioned by a rear outer gland and a rear inner gland mounted on the motor shaft. The rear end cover is set on the outer ring of the rear bearing, and the rear outer gland, the rear inner gland and the rear end cover are fixedly connected to lock the rear bearing; the front outer gland is provided with an oil inlet hole and an oil drain The hole, one end of the oil inlet hole communicates with the front bearing through a cavity formed by the front outer gland and the front bearing, and the other end is provided with a grease inlet connected with the bearing lubrication device, and the oil discharge hole passes through the passage and the front end cover of the front end cover The front inner gland and the cavity formed by the front bearing are in communication with the front bearing; The outer pressure cover is provided with an oil inlet hole and an oil discharge hole, one end of the oil inlet hole is communicated with the rear bearing through a cavity formed by the rear outer pressure cover and the rear bearing, and the other end is provided with a grease inlet connected with the bearing lubrication device. The oil drain holes communicate with the rear bearing through the passage formed by the passage and the rear end cover, the rear inner gland, and the rear bearing on the rear end cover.

A further technical solution of the present invention is that the bearing lubrication device comprises an oil pipe branch pipe, a lower oil pipe branch pipe, an oil pipe main pipe, a three-way pipe and a fueling machine; one end of the oil pipe main pipe is connected with the fuel tank, and the other end is connected with The tee pipe is connected; one end of the oil passage branch is connected with the tee pipe, and the other end is connected with the oil inlet nozzle; one end of the oil pipe lower branch pipe is connected with the tee pipe, and the other end is connected with the oil inlet nozzle.

A further technical solution of the present invention may also be that the bearing lubrication device comprises an oil pipe branch pipe, an oil pipe lower branch pipe and a fueling machine; one end of the oil pipe branch pipe is connected with the oil inlet nozzle, and the other end is connected with the oil dispenser; the oil pipe lower branch pipe is One end is connected to the oil inlet nozzle and the other end is connected to the oil dispenser.

A further technical solution of the present invention is: the peripheral guard plate adopts a split type peripheral guard plate, comprising a body and a middle shaft; the body is provided with a shaft hole, the shaft hole penetrates the upper top surface and the lower bottom surface of the body; the middle shaft is mounted on the shaft In the hole, both ends of the center shaft protrude from the body.

A further technical solution of the present invention is that the body is stacked from the lower section, the middle section and the upper section from bottom to top; the lower section, the middle section and the upper section are each provided with a common axial hole with the same aperture size, and the three are stacked on the central axis. Upper, both ends of the central axis extend out of the body.

According to a further technical solution of the present invention, the central axis has a right prism shape, and the shape of the shaft hole on the lower section, the middle section and the upper section is adapted to the shape of the central axis.

The invention adopts the coaxial direct-drive direct drive structure of the impeller and the motor, and the peripheral guard plate adopts the split type peripheral guard plate, which has the following advantages compared with the existing different shaft indirect drive type sand making machine:

1. High transmission efficiency: Since the impeller and the motor are coaxially connected directly, the impeller is directly driven by the motor, which reduces the intermediate link between the belt and the pulley, so the transmission efficiency is high.

2. The impeller is directly driven by a motor, which overcomes the shortcomings of the prior art that the two motors are not synchronized and cause mutual consumption and reduce transmission efficiency.

3. The motor is installed in the sealed motor bracket, which effectively extends the service life of the motor.

4. Since the motor adopts a full water-cooled motor, it can reduce the temperature rise of the stator and rotor of the motor and the temperature of the upper and lower end bearings, so that the stator and rotor of the motor and the upper and lower end bearings can stably operate under lower temperature conditions, effectively extending the motor. The service life.

5, no need to manually refuel, the operation of the tanker can be convenient for the front bearing and the rear bearing lubrication, easy to operate.

6. The peripheral guard plate adopts a split structure, including a body and a middle shaft. The body and the middle shaft body are combined by a lower section, a middle section and an upper section. In the process of use, if the middle section is worn, it can be conveniently removed from the central axis, and The upper or lower section can be replaced and replaced. It is not only easy to install, disassemble and adjust the orientation, but also prolongs the service life of the peripheral shield and reduces the cost of use.

7. The peripheral guard plate can be used in all angles at various angles to effectively extend the service life: when one face of the guard plate body is worn out, it can be easily removed from the center shaft and rotated 90°, or 180°, or 270°, and replaced. After going to another working surface, install it to continue to use; when the middle section of the main body of the shield is worn, it can be replaced with the upper section or the lower section, and then installed to continue to use; not only the installation, disassembly and adjustment of orientation is very convenient.

8. The middle shaft can be made of ordinary steel with a price of 0.3-0.4 million yuan/T. Its shape is straight prismatic and has good guiding. During use, the body will not rotate or change direction due to material impact. .

9. The structure of the whole machine is simple and light, and the production cost and running cost are low.

The invention is further described below in conjunction with the drawings and the examples.

DRAWINGS

Figure 1 is a schematic view showing the structure of an indirect drive type sand making machine with different shafts and double motors;

Figure 2 is a schematic view showing the assembly structure of the peripheral sanding plate of the prior sand making machine;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

4 is a schematic structural view of Embodiment 1 of the present invention;

Figure 5 is a partial enlarged view of the portion E of Figure 4;

Figure 6 is a partial enlarged view of the F portion of Figure 4;

Figure 7 is a schematic structural view of a motor bracket of the present invention;

Figure 8 is a left side view of Figure 7;

Figure 9 is a plan view of Figure 8;

Figure 10 is a schematic structural view of a water-cooled motor according to the present invention;

Figure 11 is a schematic structural view of a lower end cover of a full water cooled motor according to the present invention;

12 is a schematic structural view of an upper end cover of a water-cooled motor according to the present invention;

Figure 13 is a schematic structural view of a self-lubricating motor of the present invention;

Figure 14 is a cross-sectional view taken along line B-B of Figure 4;

Figure 15 is a schematic view showing the assembly structure of the peripheral shield of the present invention;

Figure 16 is a cross-sectional view taken along line C-C of Figure 15;

17 is a schematic structural view of a body of a peripheral guard plate according to the present invention;

FIG. 18 is a schematic structural diagram of Embodiment 2 of the present invention.

detailed description

Example 1

As shown in FIG. 4, an energy-efficient direct-drive type sand making machine comprises a sand making machine shell 1, an impeller 2, a motor 3, a motor bracket 5, a motor sealing pressure plate 6 and a peripheral guard plate, and the impeller 2 is located in the sand making machine. Inside the casing 1, it is directly mounted on the shaft of the motor 3, the motor 3 is mounted in the motor bracket 5, and the peripheral shield is installed between the sander casing 1 and the impeller 2.

As shown in FIGS. 7-9, the motor bracket 5 includes a housing 51, an upper end plate 52, a lower end plate 53, an inner casing 54, an upper support plate 55, a lower support plate 56, a guide plate 57, and a sealing plate 58. a tubular opening at both ends is provided with a movable door 511; an upper end plate 52 is located at the top of the outer casing 51, and a lower end plate 53 is located at the bottom of the outer casing 51; the upper end plate 52, the upper supporting plate 55 and the lower supporting plate 56 are provided with a power supply machine 3 The inner casing 54 has a tubular shape with open ends, and has a hole for the cable to pass through. The inner casing 54 is located inside the outer casing 51, and has a motor seat 541 at the top, a motor sealing plate 542 at the bottom, and an upper support plate 55. The inner edge is connected to the upper portion of the inner casing 54 or the motor base 541, and the outer edge is connected to the outer casing 51; the inner edge of the lower support plate 56 is connected to the inner casing 54 or the motor sealing plate 542, and the outer edge is connected to the outer casing 51; The upper end of the guide plate 57 is fixedly connected to the upper support plate 55 and sealed, and the lower end is fixedly connected to the upper end of the sealing plate 58 and sealed. The lower end of the sealing plate 58 is fixedly connected with the lower support plate 56 and sealed, and the front and rear of the sealing plate 58 are sealed. The two ends are fixedly connected and sealed with the outer casing 51, that is, the left and right sealing plates 58 and the guide plate 57 are combined with the inner casing 54, the upper support plate 55, the lower support plate 56 and the outer casing 51 to form a closed space of the sealing motor 3 (e.g. Figure 6-7).

As shown in FIG. 5, the diameter of the rear end cover of the motor is larger than the diameter of the outer cover of the motor, so that the joint of the rear end cover and the motor outer cover forms a step, and the motor sealing pressure plate 6 is a circular ring, which passes through the elastic cushion 7 and The screw 8 is fixedly mounted on the bottom of the motor sealing plate 58, and the inner ring is located at the step of combining the rear end cover of the motor and the outer cover of the motor to form a seal on the bottom plane of the rear end cover of the motor.

As shown in Fig. 6, the movable door 511 of the outer casing 51 has a hole through which the external cable 9 passes, and a sealing ring 10 is provided between the cable 9 and the hole to seal it.

As shown in FIG. 10, the motor is a full water-cooled motor, which is composed of a rear outer pressure cover 11, a rear bearing 12, a rear end cover 13, a rear inner pressure cover 14, a water supply housing 15, a stator 16, a rotor 17, and a front internal pressure. The cover 18, the front end cover 19, the front bearing 110, the front outer gland 111 and the motor shaft 112 are formed; the rear bearing 12 is mounted on the motor shaft 112, and passes through the rear outer gland 11 and the rear internal pressure mounted on the motor shaft 112. The cover 14 is positioned, the rear end cover 13 is fitted on the outer ring of the rear bearing 12, and the rear outer gland 11, the rear inner gland 14 and the rear end cover 13 are fixedly connected to lock the rear bearing 12; the front bearing 110 is mounted. On the motor shaft 112, and positioned by the front outer pressure 1 cover 11 and the front inner pressure cover 18 mounted on the motor shaft 112, the front end cover 19 is fitted on the outer ring of the front bearing 110, the front outer gland 111, the front inner The gland 18 and the front end cover 19 are fixedly connected to lock the front bearing 110; the outer ring of the rear end cover 13 has a rear bearing cooling water passage 113 and a water inlet 114, and the water tank casing 15 has an organic shell cooling water passage 151. The front end cover 19 has a front bearing cooling water passage 115 and a water outlet 116 on the outer ring;

As shown in FIG. 11, there are four horizontal channels 131 on the outer ring of the rear end cover 13, and each horizontal channel has a vertical channel 132 connected thereto; except for one horizontal channel 131 directly connected to the water inlet 114, the other three One end of the horizontal passage 131 communicates with the rear bearing cooling water passage 113, and the other end is sealed by the plug 133;

As shown in FIG. 12, there are four horizontal channels 191 on the outer ring of the front end cover 19, and each horizontal channel 191 has a vertical channel 192 connected thereto; except for the horizontal channel 191 directly connected to the water outlet 116, the other three One end of the horizontal passage 191 communicates with the front bearing cooling water passage 115, and the other end is sealed by the plug 193.

As shown in FIG. 13, the self-lubricating motor includes a motor and a bearing lubricating device; the motor includes a motor shaft 31, a front bearing 32, a rear bearing 33, a front outer gland 34, a front inner gland 35, a rear outer gland 36, Rear inner cover 37, front end cover 38 and rear end cover 39; front bearing 32 is mounted on motor shaft 31 and is positioned by front outer gland 34 and front inner gland 35 mounted on motor shaft 31, front end cap 38 The front outer bearing cover 34, the front inner pressure cover 35 and the front end cover 38 are fixedly connected to the outer ring of the front bearing 32, and the front bearing 32 is locked; the rear bearing 33 is mounted on the motor shaft 31 and is mounted. The rear outer gland 36 and the rear inner gland 37 on the motor shaft 31 are positioned, and the rear end cover 39 is fitted over the outer ring of the rear bearing 33, the rear outer gland 36, the rear inner gland 37, and the rear end cover 39. The three are fixedly connected to lock the rear bearing 33; the front outer gland 34 is provided with an oil inlet hole 341 and an oil discharge hole 342, and one end of the oil inlet hole 341 passes through the space formed by the front outer gland 34 and the front bearing 32. The cavity 310 is in communication with the front bearing 32, and the other end is provided with a grease inlet 312 coupled to the bearing lubrication device. The oil discharge hole 342 passes through the passage 381 and the front end cover 38 on the front end cover 38, and the front internal pressure. The cavity 314 formed by the cover 35 and the front bearing 32 communicates with the front bearing 32; the rear outer pressure cover 36 is provided with an oil inlet hole 361 and an oil discharge hole 362, and one end of the oil inlet hole 361 passes through the rear outer pressure cover 36 and the rear The cavity 311 formed by the bearing 33 is in communication with the rear bearing 33, and the other end is provided with a grease inlet 313 coupled to the bearing lubrication device. The oil discharge hole 362 passes through the passage 391 and the rear end cover 39 on the rear end cover 39, and the rear internal pressure. The cavity 315 formed by the cover 37 and the rear bearing 33 is in communication with the rear bearing 33.

The bearing lubrication device comprises an oil passage branch pipe 316, an oil passage lower branch pipe 317, an oil passage main pipe 318, a three-way pipe 319 and a fuel dispenser 320; one end of the oil passage main pipe 318 is connected to the fuel dispenser 320, and the other end is connected with the three-way pipe 319; One end of the oil passage branch 316 is in communication with the tee pipe 319, and the other end is in communication with the oil inlet nozzle 312; one end of the oil passage lower branch pipe 317 is in communication with the tee pipe 319, and the other end is in communication with the oil inlet nozzle 313.

In use, the upper end plate 52 or the lower end plate 53 of the present invention may be fixed to the column type concrete foundation by anchor bolts.

When the water-cooled motor is in operation, the normal temperature water flows into the rear bearing cooling water passage 113 from the water inlet 114 and the horizontal passage 131 in the lower portion of the motor; when the water is filled in the bearing cooling water passage 113, since the other ends of the remaining three horizontal passages 131 have been sealed, The water flows into the casing cooling water passage 151 through the four vertical passages 132 on the rear end cover 13. When the water fills the casing cooling water passage 151, the water passes through the four vertical passages 192 and the horizontal passage 191 on the front end cover 19 successively. It flows into the front bearing cooling water passage 115, and is discharged from the water outlet 116 through a horizontal passage 191 that communicates with the water outlet 116.

When the self-lubricating motor is working, the fueling machine 320 is started, and the lubricating oil enters the oil pipe branch pipe 316 and the oil pipe lower branch pipe 317 through the oil pipe main pipe 318 and the three-way pipe 319, and the lubricating oil in the oil pipe branch pipe 316 passes through the front outer pressure cover 34. The upper oil inlet nozzle 312 is injected into the front bearing 32 through the oil inlet hole 341, and the waste lubricating oil passes through the front bearing 32, the front inner pressure cover 35, and the front end cover 38 to form a cavity 314 and a passage 381 on the front end cover 38. The oil drain hole 342 on the outer pressure cover 34 is discharged; the oil passage lower branch pipe 317 The lubricating oil is injected into the rear bearing 33 through the oil inlet 361 through the oil inlet 313 on the rear outer pressure cover 35, and the cavity 315 formed by the rear lubricating oil passing through the rear bearing 33, the rear inner pressure cover 37 and the rear end cover 39, and The passage 391 on the rear end cover 39 is discharged through the oil discharge hole 362 on the front outer pressure cover 36.

As shown in Figures 14 to 17, the split peripheral shield includes a central shaft 1-5 and a body 1-6, and the body 1-6 is composed of a lower section 1-6-1, a middle section 1-6-2 and an upper section 1-6-3. Stacked from bottom to top.

In the lower section 1-6-1, the middle section 1-6-2 and the upper section 1-6-3, the conventional shaft hole 1-6-4 with the same hole diameter is provided, and the three are stacked on the center shaft 1-5. Upper, both ends of the center shaft 1-5 protrude from the body 1-6.

The center shaft 1-5 is a right-sided prism shape, and the shape of the shaft hole 1-6-4 is adapted to the shape of the center shaft 1-5.

When in use, when one face of the body is worn, it can be easily removed from the central axis, rotated 90°, or 180°, or 270°, and replaced with another working surface, then installed to continue to use; when the body 1-6 After the middle section 1-6-2 is worn out, it can be replaced with the upper section 1-6-3 or the lower section 1-6-1, and then installed and used.

The invention is provided with a plurality of groups on the sand making machine, and is arranged in a ring shape around the impeller of the sand making machine. The assembled body 1-6 is placed between the upper support plate 1-7 and the lower support plate 1-8, and the body 1-6 is pressed and fixed to the lower support plate 1 by bolts on the upper support plate 1-7. 8, the center shaft 1-5 is installed in the shaft hole 1-6-4 of the body 1-6 through the hole in the upper support plate 1-7, and is passed out through the hole in the lower support plate 1-8. The center shaft 5 is positioned at one end of the lower support plate 1-8 through the support blocks 1-9 on the sand making machine, and is positioned at one end of the upper support plate 1-7 by the pressure plates 1-10. The pressure plate 1-10 is pressed against the end faces of the two adjacent center shafts 1-5 and fixedly connected to the upper support plates 1-7 by bolts. The upper support plate 1-7, the lower support plate 1-8 and the support block 1-9 are welded integrally with the sander casing.

Taking a PCL-1140 type crusher as an example, compared with the prior art, the present invention only has one protection, and each sand making machine can reduce the usage fee by more than 55% per year.

The present invention compares with the use of the prior art:

Comparison parameter current technology this invention Average usage time (days) 85 240 Price per week shield (yuan) 720.00 900.00 Number of guards per sand making machine 26 26 Weekly price of each sand making machine (yuan) 18720.00 23400.00 Weekly board use fee per unit of sand making machine (yuan) 220.24 97.50 Weekly board use fee per unit of sand making machine (yuan) 80385.88 35,587.50

Example 2

As shown in FIG. 18, an energy-efficient direct-drive type sand making machine has a main body 31 of a motor 3 mounted in a motor bracket 5, and a motor junction box 32 is mounted outside the partition 59 of the motor bracket 5, and a partition plate The inner casing 54 has a hole through which the lead wire of the junction box 32 passes. One end of the motor lead wire is connected to the motor main body 31, and the other end is connected to the junction box 32 through the holes in the partition 59 and the inner casing 54. The rest of the structure is the same as that of the first embodiment.

Claims (10)

An energy-efficient direct-drive type sand making machine, which comprises a sand making machine shell, an impeller, a motor, a motor bracket, a motor sealing pressure plate and a peripheral guard plate. The impeller is located in the shell of the sand making machine, and is directly mounted on the motor shaft The motor is installed in the motor bracket, and the peripheral guard plate is installed between the shell of the sand making machine and the impeller; the motor bracket includes a shell, an upper end plate, a lower end plate, an inner shell, an upper support plate, a lower support plate, a guide plate and a sealing plate, the outer casing is tubular with two ends open, and a movable door is arranged thereon; the upper end plate is located at the top of the outer casing, and the lower end plate is located at the bottom of the outer casing; the upper end plate, the upper supporting plate and the lower supporting plate have holes for feeding in and out of the power supply; the inner casing a tubular opening at both ends, having a hole through which the power supply wire passes, the inner casing being located inside the outer casing, a motor seat at the top, and a motor sealing plate at the bottom; the inner edge of the upper support plate is connected to the upper portion of the inner casing or the motor base, The edge is connected with the outer casing; the inner edge of the lower support plate is connected with the inner casing or the motor sealing plate, and the outer edge is connected with the outer casing; the upper end of the guiding plate is fixedly connected and sealed with the upper supporting plate, and the lower end is fixedly connected with the sealing plate end and sealed; The lower end of the sealing plate is fixedly connected and sealed to the lower supporting plate, and the front and rear ends of the sealing plate are fixedly connected and sealed to the outer casing, that is, the left and right sealing plates and the guiding plate and the inner casing, the upper supporting plate, the lower supporting plate and the outer casing The combination forms an enclosed space of the sealed motor. The high-efficiency energy-saving direct-drive type sand making machine according to claim 1, wherein the diameter of the rear end cover of the motor is larger than the diameter of the outer cover of the motor, so that the joint between the rear end cover and the motor outer cover forms a step, and the motor The sealing platen is annular, and is fixedly mounted on the bottom of the motor sealing plate by elastic cushions and screws, and the inner ring is located at the step of combining the rear end cover of the motor and the outer cover of the motor to form a seal on the bottom plane of the rear end cover of the motor. The high-efficiency energy-saving direct-drive type sand making machine according to claim 1 or 2, wherein the movable door of the outer casing or the outer casing has a hole through which the power supply wire passes, and the sealing ring between the electric wire and the hole is sealed. . The high-efficiency energy-saving direct-drive type sand making machine according to claim 1, wherein: a partition plate is arranged between the upper and lower support plates; the main body of the motor is installed in the motor bracket, and the motor junction box is installed outside the partition plate of the motor bracket. The partition plate and the inner casing have holes for the lead wires of the junction box to pass through, one end of the motor lead wire is connected to the motor main body, and the other end is connected to the junction box through the holes in the partition plate and the inner casing. The high-efficiency energy-saving direct-drive type sand making machine according to claim 1, wherein the motor is a full water-cooled motor, which comprises a rear outer gland, a rear bearing, a rear end cover, a rear inner gland, and a water supply case. The stator, the rotor, the front inner gland, the front end cover, the front bearing, the front outer gland and the motor shaft; the front bearing is mounted on the motor shaft and passes through the front outer gland and the front inner gland mounted on the motor shaft Positioning, the front end cover is set on the outer ring of the front bearing, the front outer gland, the front inner gland and the front end cover are fixedly connected to lock the front bearing; the rear bearing is mounted on the motor shaft and is mounted on the motor shaft The rear outer pressure cover and the rear inner pressure cover are positioned, the rear end cover is set on the outer ring of the rear bearing, and the rear outer pressure cover, the rear inner pressure cover and the rear end cover are fixedly connected, and the rear bearing is locked; The rear cover has a rear bearing cooling water passage and a water inlet, and the water inlet The organic shell cooling water channel on the casing has a front bearing cooling water channel and a water outlet on the outer ring of the front end cover. The high-efficiency energy-saving direct-drive type sand making machine according to claim 5, wherein: the outer ring of the rear end cover has a plurality of horizontal passages, and each of the horizontal passages has a vertical passage communicating with the water inlet; Outside the horizontal channel of the connection, one end of the remaining horizontal channel is connected to the rear bearing cooling water channel, and the other end is sealed by the plug; the outer ring of the front end cover has a plurality of horizontal channels, and each horizontal channel has a vertical channel connected thereto; Except for the horizontal channel directly connected to the water outlet, one end of the other horizontal channel is connected to the front bearing cooling water channel, and the other end is sealed by the plug. The high-efficiency energy-saving direct-drive type sand making machine according to claim 1, comprising a motor and a bearing lubrication device; wherein the motor comprises a motor shaft, a front bearing, a rear bearing, a front outer gland, and a front inner gland , rear outer gland, rear inner gland, front end cover and rear end cover; the front bearing is mounted on the motor shaft, and is positioned by a front outer gland and a front inner gland mounted on the motor shaft, and the front end cover is set in front On the outer ring of the bearing, the front outer gland, the front inner gland and the front end cover are fixedly connected to lock the front bearing; the rear bearing is mounted on the motor shaft and passed through a rear outer gland mounted on the motor shaft and The rear inner cover is positioned, the rear end cover is set on the outer ring of the rear bearing, and the rear outer gland, the rear inner gland and the rear end cover are fixedly connected to lock the rear bearing; the feature is: front external pressure The cover is provided with an oil inlet hole and an oil discharge hole. One end of the oil inlet hole communicates with the front bearing through a cavity formed by the front outer pressure cover and the front bearing, and the other end is provided with a grease inlet connected with the bearing lubrication device to drain the oil. a cavity formed by the passage of the front end cover and the front end cover, the front inner gland, and the front bearing It is connected with the front bearing; the rear outer gland is provided with an oil inlet hole and an oil discharge hole, one end of the oil inlet hole is communicated with the rear bearing through the cavity formed by the rear outer gland and the rear bearing, and the other end is provided with the bearing lubrication The oil inlet of the device is connected to the rear bearing through a cavity formed by the passage and the rear end cover of the rear end cover, the rear inner gland and the rear bearing. The high-efficiency energy-saving direct-drive type sand making machine according to claim 7, wherein the bearing lubrication device comprises an oil pipe branch pipe, a lower oil pipe branch pipe, an oil pipe main pipe, a tee pipe and a tanker; and one end of the oil pipe main pipe It is connected with the tanker, and the other end is connected with the tee pipe; one end of the oil pipe branch is connected with the tee pipe, and the other end is connected with the oil inlet nozzle; one end of the oil pipe lower branch pipe is connected with the tee pipe, and the other end is connected with the oil inlet nozzle; Alternatively, the bearing lubrication device comprises an oil pipe branch pipe, an oil pipe lower branch pipe and a fueling machine; one end of the oil pipe branch pipe is connected with the oil inlet nozzle, and the other end is connected with the oil dispenser; one end of the oil pipe lower branch pipe is connected with the oil inlet nozzle, and the other end is connected Connected to the tanker. The high-efficiency energy-saving direct-drive type sand making machine according to claim 1, wherein the peripheral guard plate is a split type peripheral guard plate, which comprises a body and a middle shaft; the body is provided with a shaft hole, and the shaft hole runs through The upper top surface and the lower bottom surface of the body; the middle shaft is installed in the shaft hole, and both ends of the middle shaft protrude from the body. The high-efficiency energy-saving direct-drive type sand making machine according to claim 9, wherein the body is formed by stacking the lower section, the middle section and the upper section from bottom to top; and the lower section, the middle section and the upper section are all provided with the same aperture size. The shaft holes are connected, and the three are stacked on the central shaft.

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