Double-roller crusher

Abstract

The utility model relates to a double-roller crusher in the field of crushing equipment. An upper turning cover is arranged on a feeding port of a crushing bin in a matched mode, a feeding port is formed in the middle of the arc-shaped bottom of a feeding hopper, an arc-shaped valve plate is arranged in the feeding port, a vibrating screen is arranged below crushing double rollers, and the lower portion of the vibrating screen is connected with the inner wall of the crushing bin through a spring. A vibrating screen is arranged on the right side of the crushing bin, an ultrasonic transducer is installed below the vibrating screen, a discharging opening and a material returning box are arranged on the right side of the vibrating screen, and a hose auger conveyor is arranged above the right side of the crushing bin and used for conveying large-particle coarse materials back into the crushing bin again for secondary crushing; the feed hopper is connected with a cyclone dust collector through an exhaust fan and a dust collection pipe, a Venturi pipe structure is arranged in the dust collection pipe, the top of the crushing bin is connected with a negative pressure opening of the Venturi pipe, an ash discharge opening of the cyclone dust collector is connected with the crushing bin, and a discharge valve is arranged at the conical bottom of the material receiving bin. The crusher can absorb and remove dust, can screen large-particle materials and crush returned materials for the second time, and ensures the crushing effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of crushing equipment, and particularly relates to a pair roller crusher. BACKGROUND

[0002] Alumina ceramic material belongs to a kind of excellent performance ceramic material, with superior electric insulation, high thermal conductivity, high chemical resistance, high wear resistance and low thermal expansion, and the production raw material of alumina ceramic material is mainly bauxite ore, and bauxite ore needs to be crushed during raw material pretreatment, and the crushing equipment usually used is a pair roller crusher, but the existing pair roller crusher is relatively simple in function and structure, and there are some problems during crushing operation, for example, material occasionally spouts from feed inlet, which poses a certain threat to the safety of workers, dust flies everywhere in the work site, which is not conducive to the health of personnel, material crushing is not uniform enough, the particle size of processed material is large or small, and crushing effect is not ideal, and even large-particle material needs to be manually screened and then put into the pair roller crusher for secondary crushing, which increases artificial labor workload and production cost invisibly. UTILITARIAN CONTENT

[0003] In view of the above situation, the utility model provides a pair roller crusher, which improves the working performance and safety factor of the pair roller crusher and solves the technical problems existing in the existing pair roller crusher.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A pair roller crusher, comprising a crushing chamber and a pair of crushing rollers symmetrically arranged in the crushing chamber, a material receiving chamber is integrally connected below the crushing chamber, a feed hopper is arranged at the top of the crushing chamber, a feed inlet is arranged at the top of the feed hopper, an openable and closable flap is arranged above the feed inlet, the bottom of the feed hopper is arc-shaped, a feeding port is arranged in the middle of the arc-shaped bottom, the feeding port is located directly above the middle gap between the two crushing rollers, and an arc-shaped valve plate for adjusting the feeding amount is arranged on the inner side of the feeding port.

[0006] A vibrating screen is arranged below the two crushing rollers, the left and right sides of the vibrating screen are movably connected to the inner side walls of the crushing chamber through springs and spring supports, an ultrasonic transducer is installed below the vibrating screen, an ultrasonic generator connected to the ultrasonic transducer is arranged on the outer side wall of the crushing chamber, a discharge port is arranged on the side wall of the crushing chamber corresponding to the right side of the vibrating screen, for receiving large-particle coarse material filtered by the vibrating screen, and a return material box connected to the discharge port is arranged on the right side of the crushing chamber.

[0007] The upper right side of the crushing chamber is provided with a hose auger conveyor, the feeding end of the hose auger conveyor extends to the bottom of the return box, and the discharging end of the hose auger conveyor is connected to the feeding hopper of the crushing chamber through a return pipe.

[0008] The upper left side of the crushing chamber is provided with a cyclone dust collector, the feeding hopper is connected to the air inlet of the cyclone dust collector through an air extractor and a dust removal pipe, and the ash discharge port of the cyclone dust collector extends into the crushing chamber through an ash discharge pipe; the bottom of the receiving chamber is conical, a discharging port is arranged in the middle of the conical bottom, and a discharging valve is arranged on the discharging port.

[0009] Further, the two crushing rollers are toothed rollers, a plurality of toothed protrusions are uniformly arranged on the surfaces of the crushing rollers, and a pair of roller motors are arranged on the outer side of the crushing chamber to drive the two crushing rollers; two left-right symmetrical inclined baffles are fixedly arranged on the inner side walls of the crushing chamber corresponding to the upper sides of the two crushing rollers, the lower ends of the two inclined baffles correspondingly extend above the two crushing rollers in a non-contact manner, and a dust suction pipe is obliquely connected to the top of the crushing chamber.

[0010] Further, a Venturi tube structure is arranged in the dust removal pipe, the dust suction pipe is connected to the negative pressure end of the Venturi tube structure, and is used to suck dust gas at the top of the crushing chamber; when the suction air passes through the tapered pipe, a high-speed airflow is formed, a negative pressure is formed due to the Venturi effect, and the dust gas at the top of the crushing chamber is sucked into the cyclone dust collector through the dust suction pipe for dust removal and purification treatment.

[0011] Further, an air filter is further arranged on the exhaust port of the cyclone dust collector, is used for the last step of purification of the air after dust removal of the cyclone dust collector, and is used for emptying, which can effectively reduce the dust content in the atmosphere of the working environment, improve the working environment conditions, and is beneficial to the protection of the health of personnel.

[0012] Further, a valve plate rotating shaft is rotatably arranged above the arc-shaped bottom along the axis of the arc-shaped bottom, the two ends of the valve plate rotating shaft are rotatably connected to the front and rear end plates of the arc-shaped bottom through bearings, a feeding motor is arranged on the outer side wall of the arc-shaped bottom and is used to drive the valve plate rotating shaft, and the inner sides of the front and rear ends of the arc-shaped valve plate are fixedly connected to the valve plate rotating shaft through sector-shaped connecting plates.

[0013] Further, the right side of the upturned cover is rotatably connected to the edge of the feeding port through a hinge, an electric telescopic rod is rotatably arranged on the outer side wall of the feeding hopper, and the telescopic end of the electric telescopic rod is rotatably connected to the middle part of the upturned cover. Through the telescopic action of the electric telescopic rod, the upturned cover can be driven to be upturned and opened to feed, or the downturned cover can be closed to prevent the materials from splashing, thereby improving the safety of the crushing operation.

[0014] Further, the discharge valve is an electric plug valve for controlling the opening of the discharge port.

[0015] Further, a supporting leg is arranged below the bottom of the receiving bin for supporting the whole roller crusher device.

[0016] Further, an electric control box is arranged outside the supporting leg, and the electric telescopic rod, the electric plug valve, the feeding motor, the roller motor, the air extractor, the hose auger conveyor and the ultrasonic generator are electrically connected with the electric control box.

[0017] The utility model also includes other components that enable it to be used normally, which are all conventional means in the field, in addition, the devices or components not specified in the utility model, such as the electric telescopic rod, the ultrasonic transducer, the ultrasonic generator, the cyclone dust collector, the venturi structure, the hose auger conveyor and the electric control box and the internal control circuit arrangement, all adopt the existing technology in the field.

[0018] The utility model has the advantages of the following:

[0019] The roller crusher provided by the utility model can effectively prevent material from splashing by installing the upper cover on the feeding port, can obviously reduce dust flying in the working environment by additionally arranging the dust suction and removal device, improve the safety of the crushing operation and protect the health of the personnel, and can filter and return the large-particle material with poor primary crushing effect in the crushing process to the secondary processing by additionally arranging the vibrating screen device and the hose auger conveyor automatic return device, improve the material crushing uniformity, ensure the crushing effect, reduce the labor intensity of workers and improve the crushing processing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of the roller crusher in the embodiment.

[0021] Figure 2 It is Figure 1 It is a local enlarged structure schematic view of A in the embodiment.

[0022] Figure 3 It is Figure 1 It is a local sectional view of the feeding port and the arc-shaped valve plate. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be clearly and completely described below in combination with specific embodiments, and obviously, the described embodiments are only some of the embodiments of the utility model, but not all the embodiments.

[0024] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings shown, only for ease of description.

[0025] Embodiment

[0026] As Figures 1-3 shown, a pair of crushing rollers, including a crushing chamber 1, and a pair of crushing rollers 3 symmetrically arranged in the crushing chamber, the crushing chamber is integrally connected with the receiving chamber 2 below, the receiving chamber bottom is provided with a plurality of legs 32, the whole roller crusher device is fixed on the top of each leg; the crushing chamber top is provided with a feed hopper 4, and the feed hopper top is provided with a feed port 5.

[0027] Specifically, the two crushing rollers are toothed rollers, which can better bite the material and crush it, and can significantly reduce the occurrence of material spattering, and the crushing roller surface is uniformly provided with a plurality of toothed protrusions, and the outer side of the crushing chamber is provided with a speed reducer and a roller motor (not shown in the figure) for driving the two crushing rollers. The roller motor and the speed reducer belong to the prior art of the roller crusher field, and the specific setting will not be described in detail here.

[0028] Two crushing rollers correspond to the inner side wall of the crushing chamber above, and two left and right symmetrical inclined baffles 10 are fixedly arranged on the inner side wall of the crushing chamber above the two crushing rollers. The two inclined baffles are arranged in V shape, and the lower ends of the two inclined baffles respectively correspond to the non-contact type above the two crushing rollers, and the top of the crushing chamber is obliquely connected with a dust suction pipe.

[0029] The upper side of the feed port is provided with an openable and closable upper cover 6, the bottom of the feed hopper is arc-shaped 7, the arc-shaped bottom is provided with a feeding port 8 in the middle, the feeding port is located directly above the middle gap of the two crushing rollers, and the inner side of the feeding port is provided with an arc-shaped valve plate 9 for adjusting the feeding amount.

[0030] Specifically, the right side of the upper cover is rotatably connected to the edge of the feed port through a hinge 33, and an electric telescopic rod 11 is rotatably arranged on the outer side wall of the feed hopper, and the telescopic end of the electric telescopic rod is rotatably connected to the middle part of the upper cover. Through the telescopic action of the electric telescopic rod, the upper cover can be driven to open upward in a fan shape for feeding, or the lower cover can be closed to prevent material spattering, thereby improving the safety of crushing operation.

[0031] Specifically, the arc-shaped bottom is rotatably provided with a valve plate rotating shaft 12 along its axis, the two ends of the valve plate rotating shaft are rotatably connected with the front and rear end plates of the arc-shaped bottom through bearings 13, a feeding motor 14 is arranged on the outer side wall of the arc-shaped bottom for driving the valve plate rotating shaft, the feeding motor is preferably a servo motor, which can accurately control the opening size and forward / reverse rotation angle of the arc-shaped valve plate, a servo driver is arranged in the electric control box, and the inner sides of the front and rear ends of the arc-shaped valve plate are fixedly connected with the valve plate rotating shaft through sector connecting plates 15.

[0032] A vibrating screen 16 is arranged below the two crushing rollers, the left and right sides of the vibrating screen are movably connected with spring supports 18 through springs 17, the spring supports are fixedly connected to the inner side wall of the crushing chamber, an ultrasonic transducer 19 is arranged below the vibrating screen for driving the vibrating screen to vibrate at a high speed, and an ultrasonic generator 20 connected with the ultrasonic transducer is arranged on the outer side wall of the crushing chamber, the ultrasonic generator and the ultrasonic transducer are both mature prior art, and will not be described in detail here.

[0033] A discharge port 21 is formed in the side wall of the crushing chamber corresponding to the right side of the vibrating screen, for receiving the large-particle coarse materials filtered by the vibrating screen, and a return material box 22 connected with the discharge port is arranged on the right side of the crushing chamber.

[0034] A hose auger conveyor 23 is arranged above the right side of the crushing chamber, the feeding end of the hose auger conveyor extends through a hose to the bottom of the return material box, flexible shaftless spiral blades are arranged in the hose, which can suck and convey the materials, and the discharging end of the hose auger conveyor is connected to the feeding hopper of the crushing chamber through a return pipe, for feeding the large-particle coarse materials back to the crushing chamber for secondary crushing. The hose auger conveyor is mature prior art and is widely used in grain suction machines and the like, and will not be described in detail here.

[0035] A cyclone dust collector 24 is arranged above the left side of the crushing chamber, the feeding hopper is connected to the air inlet of the cyclone dust collector through a suction fan 25 and a dust removal pipe 26, and the ash discharge port of the cyclone dust collector extends into the crushing chamber through an ash discharge pipe 27; the bottom of the receiving chamber is conical, a discharge port is arranged in the middle of the conical bottom, and a discharge valve 28 is arranged on the discharge port.

[0036] Specifically, the discharge valve is an electric gate valve for controlling the opening of the discharge port. By controlling the opening of the discharge valve, a certain amount of crushed materials can be temporarily stored in the receiving chamber, and the discharge time and discharge flow rate can be controlled, thereby playing a role of discharge buffer.

[0037] An air filter 29 is further arranged on the exhaust port of the cyclone dust collector, for performing the last step of purification on the exhaust air of the cyclone dust collector before discharging, and the air filter is arranged in a detachable structure for facilitating daily cleaning and maintenance and replacement.

[0038] Specifically, a tapered pipe 30 is arranged inside the dust removal pipe to form a venturi structure, the dust suction pipe is connected to the negative pressure end of the venturi structure, the upper end of the dust suction pipe is located below the tapered pipe, and the inclined direction matches the converging direction of the tapered pipe, for sucking the dust gas at the top of the crushing chamber, the high-speed airflow is formed when the suction fan suction wind passes through the tapered pipe, the negative pressure is formed due to the venturi effect, and the dust gas at the top of the crushing chamber is sucked into the cyclone dust collector through the dust suction pipe for dust removal and purification treatment.

[0039] Specifically, an electric control box 31 is arranged outside the supporting leg, and the electric telescopic rod, the electric plug-in valve, the feeding motor, the roller motor, the suction fan, the hose auger conveyor and the ultrasonic generator are electrically connected to the electric control box.

[0040] The technical scheme of the utility model is not limited to the above specific embodiments, and many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments, and any technical modification made within the spirit and principle of the utility model falls within the protection scope of the utility model.

Claims

1. A roller crusher, comprising a crushing chamber and a pair of crushing rollers symmetrically arranged in the crushing chamber, characterized in that: The bottom of the crushing bin is also integrally connected with a receiving bin, a feed hopper is provided on the top of the crushing bin, a feed port is provided on the top of the feed hopper, an openable and closable flip cover is provided above the feed port, the bottom of the feed hopper is an arc-shaped bottom, a feeding port is provided in the middle of the arc-shaped bottom, the feeding port is located just above the gap between the two crushing rollers, an arc-shaped valve plate for adjusting the feeding amount is provided on the inside of the feeding port, a vibrating screen is provided under the two crushing rollers, and the left and right sides of the vibrating screen are movably connected to the inner wall of the crushing bin through springs and spring supports respectively, an ultrasonic transducer is installed under the vibrating screen, an ultrasonic generator is provided on the outer wall of the crushing bin, and a vibrating screen is provided on the side wall of the crushing bin corresponding to the right side of the vibrating screen. The discharge port is used to receive the large-particle coarse material filtered out by the vibrating screen. A return box connected to the discharge port is provided on the right side of the crushing bin. A hose auger conveyor is provided above the right side of the crushing bin. The feed end of the hose auger conveyor extends to the bottom of the return box, and the discharge end of the hose auger conveyor is connected to the feed hopper of the crushing bin through a return pipe, which is used to return the large-particle coarse material to the crushing bin for secondary crushing. A cyclone dust collector is provided above the left side of the crushing bin, and the feed hopper is connected to the air inlet of the cyclone dust collector through an exhaust fan and a dust removal pipe. The ash discharge port of the cyclone dust collector extends into the crushing bin through the ash discharge pipe. The bottom of the receiving bin is a conical bottom, and a discharge port is provided in the middle of the conical bottom, and a discharge valve is installed on the discharge port.

2. A double-roll crusher according to claim 1, characterized in that: The two crushing rollers are both toothed rollers, and a number of tooth-like protrusions are evenly distributed on the surface of the crushing rollers. A roller motor for driving the two crushing rollers is provided on the outside of the crushing bin; two left-right symmetrical inclined baffles are fixed on the inner side walls of the crushing bin corresponding to the two crushing rollers above the two crushing rollers, and the lower ends of the two inclined baffles extend to the top of the two crushing rollers respectively, and a dust suction pipe is obliquely connected to the top of the crushing bin.

3. A double-roll crusher according to claim 2, characterized in that: A venturi tube structure is provided inside the dust removal pipe, and the dust suction pipe is connected to the negative pressure end of the venturi tube structure for sucking the dust gas on the top of the crushing bin.

4. A double-roll crusher according to claim 3, characterized in that: An air filter is also provided on the exhaust port of the cyclone dust collector.

5. The roller crusher according to claim 4, characterized in that: A valve plate rotating shaft is rotatably provided above the arc-shaped bottom along its axis, and both ends of the valve plate rotating shaft are rotatably connected to the front and rear end plates of the arc-shaped bottom through bearings respectively. A feeding motor for driving the valve plate rotating shaft is provided on the outer wall of the arc-shaped bottom, and the inner sides of the front and rear ends of the arc-shaped valve plate are fixedly connected to the valve plate rotating shaft through fan-shaped connecting plates respectively.

6. The roller crusher according to claim 5, characterized in that: The right side of the upper flip cover is rotatably connected to the edge of the feed port through a hinge, and an electric telescopic rod is rotatably provided on the outer side wall of the feed hopper, and the telescopic end of the electric telescopic rod is rotatably hinged to the middle part of the upper flip cover.

7. The roller crusher according to claim 6, characterized in that: The discharge valve is an electric gate valve, which is used to control the opening of the discharge port.

8. The roller crusher according to claim 7, characterized in that: Support legs are provided below the bottom of the material receiving bin.

9. The roller crusher according to claim 8, characterized in that: An electric control box is provided on the outside of the supporting leg, and the electric telescopic rod, electric gate valve, feeding motor, roller motor, exhaust fan, hose auger conveyor and ultrasonic generator are all electrically connected to the electric control box.

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