CN114226218B

CN114226218B - Stand wear and tear cylinder screening plant

Info

Publication number: CN114226218B
Application number: CN202111514678.8A
Authority: CN
Inventors: 郑国彬; 吴展东; 薛玉振; 陶务竹; 侯金国; 王成鑫; 亓友鹏
Original assignee: Laigang Group Taidong Industries Co ltd
Current assignee: Laigang Group Taidong Industries Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-11-25
Anticipated expiration: 2041-12-13
Also published as: CN114226218A

Abstract

The invention discloses a wear-resistant drum screening device, which belongs to the technical field of mine industrial equipment and comprises a main body component, wherein the main body component comprises a drum screen, an aperture adjusting component, a protection limiting component, a left supporting plate and a right supporting plate, a first mounting frame and a second mounting frame are respectively welded at two ends of the drum screen, a driving motor is mounted at one side of the left supporting plate through a bolt, the mounting frames are mounted on an output shaft of the driving motor, the second mounting frames are mounted at one side of the right supporting plate through rotating shafts, the number of the aperture adjusting components is three, the aperture adjusting component comprises a control sleeve, a control ring, an adjusting motor and a braking gear, the control ring is welded at one end of the control sleeve, the control sleeve and the control ring are sleeved on the drum screen, a mounting cavity and a containing groove are formed in the control ring, the adjusting motor is mounted on the inner wall of the mounting cavity through the bolt, the braking gear is arranged in the containing groove, and the braking gear is mounted on the output shaft of the adjusting motor.

Description

Stand wear and tear cylinder screening plant

Technical Field

The invention relates to a roller screening device, in particular to a wear-resistant roller screening device, and belongs to the technical field of mine industrial equipment.

Background

Slag is a by-product in a blast furnace iron making process. In the iron-making process, iron oxide is reduced into metallic iron at high temperature, impurities in iron ore such as silicon dioxide, aluminum oxide and the like react with lime and the like to generate a molten material with silicate and aluminosilicate as main components, and the molten material is quenched into loose and porous granular materials, namely blast furnace slag, which is called slag for short, and plays an important role in industrial production, particularly in heavy and large factories, the slag is made into slag cement, slag micro powder, slag portland cement, slag wool, blast furnace slag, granulated blast furnace slag powder, copper slag and the like by refining, and the slag can be classified by different methods according to the types of smelting pig iron, such as cast iron slag (slag discharged during smelting of cast iron), steelmaking pig iron slag (slag discharged during smelting of pig iron for steelmaking) and special pig iron slag (slag discharged during smelting of pig iron with iron ore containing other metals, such as manganese slag and magnesium slag); further, according to the cooling method, physical properties and shape, it can be classified into slow-cooling slag (lump or powder) and rapid-cooling slag (granular, fibrous, porous and pumice).

The slay generally needs to use the drum sieve to sieve, application number 201720589683.8 provides an improvement drum sieve machine is the drum sieve commonly used at present, there are some inadequacies in this drum sieve when using, the slay sieves with the time need multistage, this drum sieve can realize multistage branch sieve, but the sieve mesh size is fixed, therefore great limitation when using, can not carry out the flexibility according to the demand, and mineral appears piling up easily when removing in inside, discharge along with large granule slay easily when there is the tiny particle slay in the top, and under the drive of motor, slay and inner wall striking are very violent, therefore the inner wall is impaired easily, partial slay also can be hit the bits, consequently, the tiny particle slay can increase, and in case the inside condition that appears the slay and block also can not in time discover, consequently also can cause the damage to the inner wall.

Disclosure of Invention

The invention aims to solve the problems and provide a wear-resistant drum screening device which is good in screening effect and good in protection.

The invention achieves the purpose through the following technical scheme, the wear-resistant drum screening device comprises a main body component, the main body component comprises a drum screen, an aperture adjusting component, a protection limiting component, a left support plate and a right support plate, a first mounting frame and a second mounting frame are welded at two ends of the drum screen respectively, a driving motor is mounted on one side of the left support plate through bolts, the mounting frames are mounted on an output shaft of the driving motor, the two mounting frames are mounted on one side of the right support plate through rotating shafts, the number of the aperture adjusting components is three, the aperture adjusting component comprises a control sleeve, a control ring, an adjusting motor and a brake gear, the control ring is welded at one end of the control sleeve, the control sleeve and the control ring are sleeved on the drum screen, a mounting cavity and a containing groove are formed in the control ring, the adjusting motor is mounted on the inner wall of the mounting cavity through bolts, the brake gear is arranged in the containing groove, the brake gear is mounted on the output shaft of the adjusting motor, a tooth ring groove is welded on the outer side wall of the drum screen, one end of the tooth ring groove is meshed with the brake ring groove, a positioning ring groove is arranged on the inner wall of the control ring, a screen hole is welded on the drum screen, a second positioning ring groove is welded in the screen hole, a first positioning ring and a second positioning ring are arranged in the screen hole;

the left supporting plate is provided with a control box, the control box is provided with a power supply, a control unit, a switch group and an alarm, the control unit and the switch group are connected with the power supply through electric wires, the driving motor and the adjusting motor are connected with the switch group through electric wires, the protection limiting component comprises a round platform shell, a cylindrical shell, a protection air bag, a mounting plate, a dust-proof shell, an air pump, an exhaust pipe and a control valve, the round platform shell is welded on the inner wall of the rotary screen through a mounting rod, the cylindrical shell is welded on one side of the round platform shell, through holes are uniformly formed in the cylindrical shell, the protection air bag is adhered on the inner wall of the cylindrical shell, the mounting plate is welded at one end of the cylindrical shell, the dust-proof shell is welded on one side of the mounting plate, and the air pump is installed in the dust-proof shell through bolts, one end of the inflator pump is arranged in the protective air bag, the inflator pump is connected with the switch group through an electric wire, the exhaust pipe is arranged at one end of the protective air bag, the control valve is arranged on the exhaust pipe, the control valve is connected with the switch group through an electric wire, a sponge layer is arranged in the dustproof shell, an air inlet groove is arranged at one side of the dustproof shell, the sponge layer is arranged at the inner side of the air inlet groove, a detection cavity is arranged in the protective air bag, a detection assembly is arranged in the detection cavity and comprises a wireless sending device, a pressure sensor and a supporting spring, the supporting spring is welded between the inner walls at two sides of the detection cavity, the wireless sending device is arranged in the detection cavity, the pressure sensor is arranged on the wireless sending device, and the pressure sensor is connected with the wireless sending device through an electric wire, the wireless receiving device is arranged on the control box and connected with the control unit through an electric wire, and the control unit is connected with the alarm through an electric wire.

Preferably, in order to facilitate automatic control of the electric appliance, the control unit comprises a controller and a control switch, the controller comprises a printed circuit board, and a microprocessor and a processing chip which are arranged on the printed circuit board, and the microprocessor and the processing chip are connected through a wire.

The beneficial effects of the invention are:

1. the position of the control sleeve is rotationally adjusted, so that the overlapping area of the first sieve mesh and the second sieve mesh can be controlled, the size of discharged slag particles can be controlled, and at most three discharge apertures can be selected through the three groups of aperture adjusting components, so that multi-stage screening can be realized.

2. According to the invention, the flowing space of the slag can be reduced through the protective air bag on the protective limiting assembly, so that the slag can be prevented from being accumulated and directly flowing out of the drum screen, and the thorough screening can be ensured.

3. According to the invention, the moving range of the slag can be reduced through the protection limiting component, so that potential energy generated during collision is reduced, the damage to the inner wall of the drum screen can be reduced, the service life of the drum screen can be prolonged, and the serious crushing condition during slag screening can be reduced, so that the drum screen and the slag can be protected.

4. The invention can automatically trigger the alarm when slag is blocked in the screening process, thereby timely prompting an operator, preventing the inner part from being blocked, preventing the slag from scratching the inner wall of the drum screen and further enhancing the protection.

Drawings

Fig. 1 is a left side perspective view of the present invention.

Fig. 2 is a right side perspective view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a cross-sectional view of a trommel of the present invention.

Fig. 5 is a view of the partial structure of fig. 4 according to the present invention.

Fig. 6 is a perspective view of the protective stop assembly of the present invention.

Figure 7 is a cross-sectional view of the protective stop assembly of the present invention.

Fig. 8 is a view of the partial structure of fig. 7 in accordance with the present invention.

In the figure:

1. a body assembly; 11. a drum screen; 111. a first mounting frame; 112. a second mounting frame; 113. a tooth ring groove; 114. a fixing ring; 115. screening holes I; 12. a left support plate; 121. a drive motor; 122. a control box; 1221. a power source; 1222. a control unit; 1223. a switch group; 1224. an alarm; 1225. a wireless receiving device; 13. a right support plate;

2. an aperture adjustment assembly; 21. a control sleeve; 211. screening holes II; 22. a control loop; 221. a positioning ring groove; 23. adjusting the motor; 24. a brake gear;

3. a protection limiting component; 31. a circular truncated cone shell; 32. a cylindrical shell; 33. a protective air bag; 331. a detection chamber; 34. mounting a plate; 35. a dust-proof shell; 351. a sponge layer; 352. an air inlet groove; 36. an inflator pump; 37. an exhaust pipe; 38. a control valve;

4. a detection component; 41. a wireless transmitting device; 42. a pressure sensor; 43. supporting the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a wear-resistant drum screening device includes a main body assembly 1, the main body assembly 1 includes a drum screen 11, an aperture adjusting assembly 2, a protection limiting assembly 3, a left support plate 12 and a right support plate 13, a first mounting frame 111 and a second mounting frame 112 are welded to two ends of the drum screen 11, a driving motor 121 is installed on one side of the left support plate 12 through bolts, the mounting frames are installed on an output shaft of the driving motor 121, the second mounting frames 112 are installed on one side of the right support plate 13 through rotating shafts, the number of the aperture adjusting assemblies 2 is three, the aperture adjusting assembly 2 includes a control sleeve 21, a control ring 22, an adjusting motor 23 and a brake gear 24, the control ring 22 is welded to one end of the control sleeve 21, the control sleeve 21 and the control ring 22 are both sleeved on the drum screen 11, an installation cavity and a containing groove are provided in the control ring 22, the adjusting motor 23 is installed on an inner wall of the installation cavity through bolts, the brake gear 24 is disposed in the containing groove, the brake gear 24 is installed on an output shaft of the adjusting motor 23, a tooth ring groove 113 is welded on an outer side wall of the drum screen 11, one end of the brake gear 24 is engaged with the tooth ring 113, a control switch 1223 is provided on the support plate 12, a control switch 1223 and a control unit 1223 connected to a control unit 1222, and a control switch 1223 connected to a power switch 1221 and a power switch 1223.

Example 1: control and screen the particle size and multi-stage and screen

The device comprises a main body component 1, wherein the main body component 1 comprises a rotary screen 11, an aperture adjusting component 2, a protection limiting component 3, a left support plate 12 and a right support plate 13, a first mounting frame 111 and a second mounting frame 112 are respectively welded at two ends of the rotary screen 11, a driving motor 121 is installed at one side of the left support plate 12 through bolts, the mounting frames are installed on an output shaft of the driving motor 121, the second mounting frames 112 are installed at one side of the right support plate 13 through rotating shafts, the number of the aperture adjusting components 2 is three, the aperture adjusting component 2 comprises a control sleeve 21, a control ring 22, an adjusting motor 23 and a brake gear 24, the control ring 22 is welded at one end of the control sleeve 21, the control sleeve 21 and the control ring 22 are both sleeved on the rotary screen 11, an installation cavity and a containing groove are arranged in the control ring 22, the adjusting motor 23 is installed on the inner wall of the installation cavity through bolts, the brake gear 24 is arranged in the accommodating groove, the brake gear 24 is mounted on an output shaft of the adjusting motor 23, a tooth ring groove 113 is welded on the outer side wall of the drum screen 11, one end of the brake gear 24 is meshed with the tooth ring groove 113, a control box 122 is arranged on the left support plate 12, a power supply 1221 is arranged on the control box 122, a control unit 1222, a switch group 1223 and an alarm 1224 are arranged, the control unit 1222 and the switch group 1223 are both connected with the power supply 1221 through electric wires, the driving motor 121 and the adjusting motor 23 are both connected with the switch group 1223 through electric wires, a positioning ring groove 221 is arranged on the inner wall of the control ring 22, a fixing ring 114 is welded on the drum screen 11, the fixing ring 114 is clamped in the positioning ring groove 221, a first sieve mesh 115 and a second sieve mesh 211 are respectively arranged on the drum screen 11 and the control sleeve 21, and the first sieve mesh 115 and the second sieve mesh 211 correspond to each other sieve mesh.

In this embodiment, the position of the rotary adjustment control sleeve 21 can control the overlapping area of the first sieve hole 115 and the second sieve hole 211, so as to control the size of the discharged slag particles, and the driving motor 121 is started through the switch group 1223 during adjustment, so that the driving motor 121 can drive the braking gear 24 to rotate, the braking gear 24 can move along the tooth ring groove 113, so as to drive the control ring 22 and the control sleeve 21 to slowly rotate, because the fixing ring 114 is clamped in the positioning ring groove 221, it can be ensured that the control ring 22 and the control sleeve 21 are stable during rotation, and when the overlapping area of the first sieve hole 115 and the second sieve hole 211 is close to the target particle size, the driving motor 121 is closed, so as to control the size of the discharged slag particles, as shown in fig. 1, because three groups of the aperture adjustment assemblies 2 are sequentially arranged on the drum sieve 11, adjustment is performed according to the above manner, at most three discharge apertures can be selected, and the aperture sizes are set from small to large from left to right, so as to realize multi-stage screening.

Example 2: thoroughly enhancing screening effect

The device comprises a main body component 1, wherein the main body component 1 comprises a rotary screen 11, an aperture adjusting component 2, a protection limiting component 3, a left support plate 12 and a right support plate 13, a first mounting frame 111 and a second mounting frame 112 are respectively welded at two ends of the rotary screen 11, a driving motor 121 is installed on one side of the left support plate 12 through bolts, the mounting frame is installed on an output shaft of the driving motor 121, the second mounting frame 112 is installed on one side of the right support plate 13 through a rotating shaft, a control box 122 is arranged on the left support plate 12, a power supply 1221, a control unit 1222, a switch group 1223 and an alarm 1224 are arranged on the control box 122, the control unit 1222 and the switch group 1223 are connected with the power supply 1221 through electric wires, the protection limiting component 3 comprises a circular truncated cone shell 31, a circular cylinder shell 32, a protection air bag 33, a mounting plate 34, a dust-proof shell 35, an air pump 36, an exhaust pipe 37 and a control valve 38, the circular truncated cone shell 31 is welded on the inner wall of the rotary screen 11 through a mounting rod, the cylindrical shell 32 is welded on one side of the circular truncated cone shell 31, through holes are uniformly formed in the cylindrical shell 32, the protective air bag 33 is adhered on the inner wall of the cylindrical shell 32, the mounting plate 34 is welded at one end of the cylindrical shell 32, the dustproof shell 35 is welded on one side of the mounting plate 34, the inflator pump 36 is installed in the dustproof shell 35 through bolts, one end of the inflator pump 36 is arranged in the protective air bag 33, the inflator pump 36 is connected with the switch group 1223 through an electric wire, the exhaust pipe 37 is installed at one end of the protective air bag 33, the control valve 38 is installed on the exhaust pipe 37, the control valve 38 is connected with the switch group 1223 through an electric wire, the sponge layer 351 is arranged in the dustproof shell 35, the air inlet groove 352 is formed in one side of the dustproof shell 35, and the sponge layer 351 is arranged on the inner side of the air inlet groove 352.

In this embodiment, when the device is used, the left side is high and the right side is low, and then the switch group 1223 is used to start the inflator 36, so that the inflator 36 can pump outside air into the protective airbag 33, so that the protective airbag 33 can expand, as shown in fig. 6, the protective airbag 33 at the bottom of the through opening can expand outwards when expanding, so that the distance between the inflator 36 and the inner wall of the drum screen 11 can be reduced, and then the switch group 1223 is used to start the driving motor 121 and guide slag into the drum screen 11, as shown in fig. 3, the slag enters the drum screen 11 and can move along the circular truncated cone shell 31 and gather between the bottom of the circular truncated cone shell 32 and the inner wall of the drum screen 11, as the distance between the circular truncated cone shell 32 and the inner wall of the drum screen 11 is reduced, so that the slag can be prevented from being accumulated and directly flowing out of the drum screen 11, so that the screening can be ensured to be thorough, the driving motor 121 can drive the drum screen 11 to rotate, so that slag can be driven to move, small particles can be discharged through the first mesh 115 and the second mesh 211, and large particles can be discharged from the right end of the drum screen 11.

Example 3: enhanced abrasion resistance and protection

In this embodiment, when the device is used, the left side is high and the right side is low, then the switch group 1223 is used to start the inflator 36, so that the inflator 36 can draw outside air into the protective airbag 33, so that the protective airbag 33 can expand, as shown in fig. 6, the protective airbag 33 at the bottom of the through opening can expand outwards when expanding, so that the distance between the inflator 36 and the inner wall of the trommel 11 can be reduced, then the driving motor 121 is started through the switch group 1223 to guide slag into the trommel 11, as shown in fig. 3, the slag can enter the trommel 11 and can move along the circular truncated cone shell 31 and gather between the bottom of the circular cone shell 32 and the inner wall of the trommel 11, as the distance between the circular cone shell 32 and the inner wall of the trommel 11 is reduced, so that the potential energy generated when the slag collides with the inner wall of the trommel 11 is reduced due to the reduction of the distance, so that the damage to the inner wall of the trommel 11 can be reduced, so that the service life of the trommel 11 can be prolonged, and the protective airbag 33 itself has good elastic and buffering effect, so that the received impact can be reduced, and the condition of crushing of the trommel when the slag can be reduced, and the screen can protect the slag.

Example 4: detecting slag blockage

The device comprises a main body component 1, the main body component 1 comprises a rotary screen 11, an aperture adjusting component 2, a protection limiting component 3, a left support plate 12 and a right support plate 13, a first mounting frame 111 and a second mounting frame 112 are respectively welded at two ends of the rotary screen 11, a driving motor 121 is installed on one side of the left support plate 12 through bolts, the mounting frames are installed on an output shaft of the driving motor 121, the second mounting frame 112 is installed on one side of the right support plate 13 through a rotating shaft, a control box 122 is arranged on the left support plate 12, a power supply 1221, a control unit 1222, a switch group 1223 and an alarm 1224 are arranged on the control box 122, the control unit 1222 and the switch group 1223 are both connected with the power supply 1221 through electric wires, the driving motor 121 and the adjusting motor 23 are both connected with the switch group 1223 through electric wires, the control unit 1222 comprises a controller and a control switch, the controller comprises a printed circuit main board and a microprocessor and a processing chip which are arranged on the printed circuit main board, the microprocessor and the processing chip are connected through an electric wire, a positioning ring groove 221 is arranged on the inner wall of the control ring 22, a fixing ring 114 is welded on the drum screen 11, the fixing ring 114 is clamped in the positioning ring groove 221, a first screen hole 115 and a second screen hole 211 are respectively arranged on the drum screen 11 and the control sleeve 21, the first screen hole 115 corresponds to the second screen hole 211, the protection limiting component 3 comprises a circular truncated cone shell 31, a cylindrical shell 32, a protection airbag 33, a mounting plate 34, a dustproof shell 35, an air pump 36, an exhaust pipe 37 and a control valve 38, the circular truncated cone shell 31 is welded on the inner wall of the drum screen 11 through a mounting rod, the cylindrical shell 32 is welded on one side of the circular truncated cone shell 31, through holes are uniformly formed in the cylindrical shell 32, the protection airbag 33 is bonded on the inner wall of the cylindrical shell 32, the mounting plate 34 is welded on one end of the cylindrical shell 32, the dustproof shell 35 is welded on one side of the mounting plate 34, the air pump 36 is installed in the dustproof shell 35 through a bolt, one end of an inflator 36 is arranged in the protective airbag 33, the inflator 36 is connected with a switch group 1223 through an electric wire, the exhaust pipe 37 is arranged at one end of the protective airbag 33, a control valve 38 is arranged on the exhaust pipe 37, the control valve 38 is connected with the switch group 1223 through an electric wire, a sponge layer 351 is arranged in the dustproof shell 35, an air inlet groove 352 is arranged at one side of the dustproof shell 35, the sponge layer 351 is arranged at the inner side of the air inlet groove 352, a detection cavity 331 is arranged in the protective airbag 33, a detection assembly 4 is arranged in the detection cavity 331, the detection assembly 4 comprises a wireless transmitting device 41, a pressure sensor 42 and a supporting spring 43, the supporting spring 43 is welded between the inner walls at two sides of the detection cavity 331, the wireless transmitting device 41 is arranged in the detection cavity 331, the pressure sensor 42 is arranged on the wireless transmitting device 41, the pressure sensor 42 is connected with the wireless transmitting device 41 through an electric wire, a wireless receiving device 1225 is arranged on the control box 122, the wireless receiving device 1225 is connected with a control unit 1222 through an electric wire, and the control unit 1222 is connected with an alarm 1224 through an electric wire.

In this embodiment, according to the screening method in embodiment 2, slag jamming occurs during the screening process, when slag is jammed, friction between the slag and the protective airbag 33 is large, and therefore the slag is in fixed contact with the protective airbag 33 and rotates along the inner wall of the drum screen 11, and when slag jamming occurs, because the multiple detection assemblies 4 are arranged in the protective airbag 33, slag can be sensed, the protective airbag 33 can be pressed when the slag is jammed, the supporting spring 43 can be pressed, then the protective airbag 33 at the top of the inner wall of the detection cavity 331 can be attached to the pressure sensor 42, the pressure sensor 42 can sense pressure information, the wireless generation device can transmit the pressure information to the control unit 1222, the control unit 1222 can receive the pressure information through the wireless receiving device 1225, and therefore the alarm 1224 can be controlled to be started, so that an operator can be prompted, the operator opens the control valve 38 through the switch 1223, and therefore gas in the protective airbag 33 can be discharged through the exhaust pipe 37, the protective airbag 33 can retract, a space between the protective airbag 33 and the inner wall of the drum screen 11 can be enlarged, and the slag can automatically fall off.

The working principle of the invention is as follows: when the invention is used, the position of the rotary adjusting control sleeve 21 can control the overlapping area of the first sieve hole 115 and the second sieve hole 211, thereby controlling the size of discharged slag particles, when in adjustment, the switch group 1223 is used for starting the driving motor 121, therefore, the driving motor 121 can drive the braking gear 24 to rotate, the braking gear 24 can move along the tooth ring groove 113, thereby driving the control ring 22 and the control sleeve 21 to slowly rotate, because the fixing ring 114 is clamped in the positioning ring groove 221, the control ring 22 and the control sleeve 21 can be ensured to be stable when rotating, when the overlapping area of the first sieve hole 115 and the second sieve hole 211 is close to the target particle size, the driving motor 121 is closed, thereby controlling the size of the discharged slag particles, as shown in figure 1, because the rotary screen 11 is sequentially provided with three groups of aperture adjusting components 2, the adjustment is carried out according to the above manner, at most three discharge apertures can be selected, the aperture sizes are set from left to right and from small to large, so that multi-stage screening can be realized, the device is then set to be high at the left and low at the right, then the inflator 36 is started through the switch group 1223, so that the inflator 36 can suck outside air into the protective air bag 33, so that the protective air bag 33 can be expanded, as shown in fig. 6, the protective air bag 33 at the bottom of the through opening can be expanded outwards when being expanded, so that the distance between the protective air bag and the inner wall of the drum screen 11 can be reduced, then the driving motor 121 is started through the switch group 1223 and slag is guided into the drum screen 11, as shown in fig. 3, the slag enters the drum screen 11 and can move along the circular truncated cone shell 31 and gather between the bottom of the drum shell 32 and the inner wall of the drum screen 11, the driving motor 121 can drive the drum screen 11 to rotate, so that the slag can be moved, and small-particle slag can be discharged through the first screen aperture 115 and the second screen aperture 211, according to the slag blocking detection device, when slag is blocked, friction force between the slag and the protective air bag 33 is large, so that the slag can be fixedly contacted with the protective air bag 33 and can rotate along the inner wall of the trommel screen 11, and when the slag is blocked, the slag can be sensed due to the fact that the plurality of detection assemblies 4 are arranged in the protective air bag 33, the protective air bag 33 can be squeezed when the slag is blocked, the supporting spring 43 can be squeezed, then the protective air bag 33 at the top of the inner wall of the detection cavity 331 can be attached to the pressure sensor 42, the pressure sensor 42 can sense pressure information, the wireless generation device can transmit the pressure information to the control unit 1222, the control unit 1222 can receive the pressure information through the wireless receiving device 1225, the alarm 1224 can be controlled to be started, an operator can be prompted, the operator can open the control valve 38 through the switch 1223, therefore, gas in the protective air bag 33 can be discharged through the exhaust pipe 37, the protective air bag 33 can retract, space between the protective air bag 33 and the inner wall of the trommel screen 11 can be enlarged, and the slag can automatically fall off.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A wear-resistant drum screening device comprising a main body assembly (1), characterized in that: the main body component (1) comprises a drum screen (11), an aperture adjusting component (2), a protection limiting component (3), a left support plate (12) and a right support plate (13), wherein a first mounting frame (111) and a second mounting frame (112) are welded at two ends of the drum screen (11) respectively, a driving motor (121) is installed on one side of the left support plate (12) through bolts, the mounting frames are installed on an output shaft of the driving motor (121), the second mounting frames (112) are installed on one side of the right support plate (13) through rotating shafts, the number of the aperture adjusting components (2) is three, the aperture adjusting component (2) comprises a control sleeve (21), a control ring (22), an adjusting motor (23) and a brake gear (24), the control ring (22) is welded at one end of the control sleeve (21), the control sleeve (21) and the control ring (22) are sleeved on the drum screen (11), an installation cavity and a containing groove are formed in the control ring (22), the adjusting motor (23) is installed on the inner wall of the installation cavity through bolts, the brake gear (24) is installed in the drum screen gear (24), an outer side wall of the adjusting gear (23) is welded on an output shaft (11), an output shaft (11) of the adjusting gear (23) through a ring groove welded on which is welded at the drum screen, a ring groove (23), one end of the brake gear (24) is meshed with the tooth ring groove (113), a positioning ring groove (221) is formed in the inner wall of the control ring (22), a fixing ring (114) is welded on the drum screen (11), the fixing ring (114) is clamped in the positioning ring groove (221), a first sieve hole (115) and a second sieve hole (211) are respectively formed in the drum screen (11) and the control sleeve (21), and the first sieve hole (115) corresponds to the second sieve hole (211);

the protection limiting assembly comprises a left support plate (12), a control box (122) is arranged on the left support plate (12), a power supply (1221), a control unit (1222), a switch group (1223) and an alarm (1224) are arranged on the control box (122), the control unit (1222) and the switch group (1223) are connected with the power supply (1221) through electric wires, a driving motor (121) and an adjusting motor (23) are connected with the switch group (1223) through electric wires, the protection limiting assembly (3) comprises a circular table shell (31), a cylindrical shell (32), a protection air bag (33), a mounting plate (34), a dust-proof shell (35), an air pump (36), an exhaust pipe (37) and a control valve (38), the circular table shell (31) is welded on the inner wall of the drum screen (11) through a mounting rod, the cylindrical shell (32) is welded on one side of the circular table shell (31), through holes are uniformly formed in the cylindrical shell (32), the protection air bag (33) is adhered to the inner wall of the cylindrical shell (32), one end of the mounting plate (34) is welded on one side of the cylindrical shell (35), one side of the air bag (35), and one end of the air bag (35) is welded in the air pump (35), one side of the protection air bag (35), one side of the air bag (35) through the air bag (35), and the protection air bag (35) is arranged in the protection air pump (35), the inflator pump (36) is connected with the switch group (1223) through an electric wire, the exhaust pipe (37) is installed at one end of the protective air bag (33), the control valve (38) is installed on the exhaust pipe (37), the control valve (38) is connected with the switch group (1223) through an electric wire, a sponge layer (351) is arranged in the dustproof shell (35), an air inlet groove (352) is arranged at one side of the dustproof shell (35), the sponge layer (351) is arranged at the inner side of the air inlet groove (352), a detection cavity (331) is arranged in the protective air bag (33), a detection assembly (4) is arranged in the detection cavity (331), the detection assembly (4) comprises a wireless transmitting device (41), a pressure sensor (42) and a supporting spring (43), the supporting spring (43) is welded between the inner walls of the two sides of the detection cavity (331), the wireless transmitting device (41) is installed in the detection cavity (331), the pressure sensor (42) is installed on the wireless transmitting device (41), the wireless transmitting device (42) is connected with the wireless transmitting device (41) through an electric wire, the wireless receiving device (122) is provided with the control unit (1222), and the wireless receiving device (1222) are arranged through an electric wire, the control unit (1222) is connected with the alarm (1224) through an electric wire.

2. A wear resistant drum screening device in accordance with claim 1, wherein: the control unit (1222) comprises a controller and a control switch, wherein the controller comprises a printed circuit mainboard, and a microprocessor and a processing chip which are arranged on the printed circuit mainboard, and the microprocessor and the processing chip are connected through wires.