Primary crushing and feeding mechanism for building waste

Abstract

The utility model relates to the technical field of concrete production, and discloses a primary crushing and feeding mechanism for construction waste, which comprises two impact crushers arranged in parallel and a feeding conveyor belt arranged obliquely, a primary crushing mechanism is fixedly arranged above the middle of the two impact crushers, and the primary crushing mechanism is connected with the upper end of the feeding conveyor belt; the primary crushing mechanism comprises a crushing box body, an upper feeding cavity, a middle crushing cavity and a lower driving cavity are formed in the crushing box body, and the two ends of the middle crushing cavity are each provided with a discharging channel which is arranged obliquely downwards; a liftable crushing main body is arranged in the middle crushing cavity and the lower driving cavity; a pair of upper crushing slopes is formed on the middle crushing cavity; a pair of lower crushing slopes is formed on the crushing body and located below the corresponding upper crushing slopes. According to the mechanism, the building waste can be effectively and primarily crushed, the block diameter of the building waste entering an impact crusher is reduced, the load of the impact crusher is reduced, and the crushing effect and the treatment efficiency of the building waste are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete production technical field especially relates to a building waste preliminary crushing feeding mechanism. BACKGROUND

[0002] In the development process of the construction industry, a large amount of building waste is produced. The sizes of the building waste are different, and the shapes are also different. In the traditional processing mode, if the building waste is directly put into the impact breaking equipment for crushing, many problems will occur. For example, the building waste with large size will cause the impact breaking to bear a large load, resulting in unstable operation of the equipment and easy damage, and the crushing effect is not ideal, and the building waste cannot be effectively crushed to the size required for subsequent processing. This not only reduces the processing efficiency of the building waste, but also increases the processing cost. Therefore, a feeding mechanism is needed, which can preliminarily crush the building waste, reduce the size of the building waste, and make the size of the building waste entering the impact breaking more uniform and suitable, to solve the above problems existing in the prior art. SUMMARY

[0003] The utility model aims at providing a building waste preliminary crushing feeding mechanism, which can effectively preliminarily crush the building waste, reduce the size of the building waste entering the impact breaking, reduce the load of the impact breaking, and improve the crushing effect and processing efficiency of the building waste.

[0004] The above technical purpose of the utility model is realized by the following technical scheme:

[0005] A building waste preliminary crushing feeding mechanism, comprising two impact breakers arranged side by side and an inclined feeding conveyor belt, a preliminary crushing mechanism is fixedly arranged above the middle of the two impact breakers, and the preliminary crushing mechanism is connected to the upper end of the feeding conveyor belt; the preliminary crushing mechanism comprises a crushing box body, an upper feeding cavity, a middle crushing cavity and a lower driving cavity are formed in the crushing box body, and a discharge passage inclined downward is arranged at each end of the middle crushing cavity; a lifting crushing body is arranged in the middle crushing cavity and the lower driving cavity;

[0006] An upper crushing inclined surface with high inside and low outside is formed on the middle crushing cavity; a pair of lower crushing inclined surfaces with high inside and low outside are formed on the lifting crushing body and located below the corresponding upper crushing inclined surfaces; and the low ends of the lower crushing inclined surfaces and the upper crushing inclined surfaces are connected to the discharge passage. The building waste is conveyed upward by the feeding conveyor belt, falls into the upper feeding cavity automatically when conveyed to the upper end of the feeding conveyor belt, enters between the middle crushing cavity and the upper crushing inclined surface and the lower crushing inclined surface, and is crushed into small pieces by the upper crushing inclined surface and the lower crushing inclined surface through extrusion when the lifting crushing body moves up and down.

[0007] The utility model further sets up: a plurality of pyramidal broken cone bodies are fixed on the upper broken slope, and the building waste is extruded when the broken main body moves up, and the building waste can be conveniently broken through the sharp part of the broken cone body.

[0008] The utility model further sets up: the gradient of the upper broken slope is greater than the gradient of the lower broken slope, so that the channel between the upper broken slope and the lower broken slope is set as large at the top and small at the bottom, the building waste can be piled to a certain extent, and the building waste can pass through the breaking process as much as possible, so that the block diameter of the building waste entering the impact breaker is not too large.

[0009] The utility model further sets up: the broken main body is driven to move up by the cam mechanism below, and is reset by the weight of the broken main body.

[0010] The utility model further sets up: the broken main body is split into two broken monomers, and the two broken monomers are abutted and slidably connected in the lower driving cavity;

[0011] The lower part of the broken monomer is rotationally connected with a supporting shaft, the supporting shaft is sleeved with a supporting ring, the supporting ring is abutted on the cam below, the cams below the two broken monomers are fixed on the same main shaft, the main shaft is rotationally connected in the broken box body, and the main shaft is connected with a motor for driving the rotation of the main shaft. The motor drives the rotation of the main shaft, the main shaft drives the rotation of the cam, the cam drives the supporting ring to move up through the convex end, the supporting ring drives the broken monomer to move up through the supporting shaft, the broken monomer moves up to extrude the building waste through the lower broken slope and break the building waste, and after the convex end of the cam is separated from the supporting ring, the broken monomer is automatically reset by the gravity of the broken monomer, the gravity of the material above and the impact.

[0012] The utility model further sets up: the phase difference of the cams below the two broken monomers is 180 DEG, so that the two cams are staggered to drive the broken monomer to move up, the torque of the main shaft can be effectively reduced, and the load of the motor can be effectively reduced.

[0013] The utility model further sets up: the combining surface between the two broken monomers is provided with a sink part, the sink part can reduce the contact area between the two broken monomers, so that the friction resistance between the two broken monomers is reduced, and the up movement and the down movement of the broken monomer are ensured to be smoothly carried out.

[0014] The utility model further sets up: two supporting shafts are arranged in parallel at the lower end of the broken monomer, two cams are correspondingly arranged below each broken monomer, and each cam is fixed on the corresponding main shaft.

[0015] Each of the two main shafts has a fixed synchronous gear, which is connected to the other via an idler gear rotatably mounted inside the crushing chamber. One of the synchronous gears meshes with a drive gear, which is fixed to the output shaft of the motor. The motor drives the drive gear, which in turn drives the corresponding synchronous gear. The synchronous gear, through the idler gear, drives the other synchronous gear to rotate synchronously, thus causing the two main shafts to rotate synchronously. The main shafts then drive the crushing units upward via cams, etc. By equipping each crushing unit with two cam drives, the upward movement stability of the crushing units can be improved.

[0016] The outstanding effect of this utility model is:

[0017] Compared with existing technologies, by setting up a primary crushing mechanism to perform primary crushing of construction waste, the diameter of the construction waste entering the impact crusher is effectively reduced, the load on the impact crusher is reduced, and the crushing effect and service life of the impact crusher are improved.

[0018] The different taper settings of the upper and lower crushing ramps and the crushing cones enable construction waste to be fully piled up in the crushing chamber and effectively crushed, thus improving crushing efficiency and quality.

[0019] The crushing body is driven upward by a cam mechanism and returns to its original position by its own weight, resulting in a simple structure and reliable operation. Furthermore, the split design of the crushing body, the phase difference setting of the cam, and the configuration of the settling trough further optimize the equipment's operating performance, reduce energy consumption, and improve its stability and reliability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the primary crushing mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the crushed monomer part of this utility model;

[0023] Figure 4 This is a schematic diagram of the dual-cam driven crushing unit of this utility model.

[0024] Reference numerals: 1. Impact crusher; 2. Feed conveyor belt; 3. Primary crushing mechanism;

[0025] 31. Crushing box; 32. Crushing body; 33. Crushing cone; 34. Support shaft; 35. Support ring; 36. Cam; 37. Main shaft; 38. Motor; 39. Synchronizing gear; 40. Idler gear; 41. Drive gear;

[0026] 311, upper feeding cavity; 312, middle crushing cavity; 313, lower driving cavity; 314, discharging passage; 315, upper crushing slope;

[0027] 321, lower crushing slope; 322, crushing monomer; 323, sink section;

[0028] 9, construction waste. DETAILED DESCRIPTION

[0029] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0030] The following references Figures 1 to 4 The embodiments of the utility model are explained as follows:

[0031] A construction waste primary crushing feeding mechanism, as shown in Figure 1 , Figure 2 , comprises two impact crushers 1 arranged side by side and a feeding conveyor 2 arranged obliquely, a primary crushing mechanism 3 is fixed above the middle of the two impact crushers 1, and the primary crushing mechanism 3 is connected to the upper end of the feeding conveyor 2; the primary crushing mechanism 3 comprises a crushing box 31, the crushing box 31 is formed with an upper feeding cavity 311, a middle crushing cavity 312 and a lower driving cavity 313, and each end of the middle crushing cavity 312 is provided with a discharging passage 314 arranged obliquely downward; the middle crushing cavity 312 and the lower driving cavity 313 are provided with a lifting crushing body 32;

[0032] The middle crushing cavity 312 is formed with a pair of upper crushing slopes 315 arranged symmetrically left and right and arranged from high inside to low outside; the lifting crushing body 32 is formed with a pair of lower crushing slopes 321 arranged left and right and arranged from high inside to low outside, and the lower crushing slopes 321 are located below the corresponding upper crushing slopes 315; the low ends of the lower crushing slopes 321 and the upper crushing slopes 315 are connected to the discharging passages 314. The construction waste 9 is conveyed upward by the feeding conveyor, and when it is conveyed to the upper end of the feeding conveyor, it automatically falls into the upper feeding cavity and enters between the middle crushing cavity and the upper crushing slope and the lower crushing slope, and then changes the distance between the upper crushing slope and the lower crushing slope with the lifting of the crushing body, so as to extrude the construction waste and make it be crushed into small pieces.

[0033] The upper crushing slopes 315 are fixed with a plurality of crushing pyramids 33 in the shape of pyramid, and the construction waste is extruded when the crushing body moves upward, and the construction waste can be easily crushed by the sharp part of the crushing pyramid.

[0034] The slope of the upper crushing slope 315 is greater than the slope of the lower crushing slope 321, so that the channel between the upper crushing slope 315 and the lower crushing slope 321 is arranged from large to small, the construction waste can be stacked to a certain extent, and the construction waste can be crushed as much as possible to ensure that the block diameter of the construction waste entering the impact crusher is not too large.

[0035] The lower part of the crushing body 32 is driven upward by the cam mechanism, and is reset by the self-weight of the crushing body 32.

[0036] The crushing body 32 is divided into two crushing bodies 322, which are abutted and slidably connected in the lower driving cavity 313.

[0037] The lower part of the crushing body 322 is rotatably connected with a supporting shaft 34, the supporting shaft 34 is sleeved with a supporting ring 35, the supporting ring 35 abuts against a cam 36 located below the supporting ring 35, the cams 36 below the two crushing bodies 322 are fixed on the same main shaft 37, the main shaft 37 is rotatably connected in the crushing box 1, and the main shaft 37 is connected with a motor 38 for driving the rotation of the main shaft. The motor drives the rotation of the main shaft, the main shaft drives the rotation of the cam, the cam drives the upward movement of the supporting ring through the convex end of the cam, the supporting ring drives the upward movement of the crushing body through the supporting shaft, the upward movement of the crushing body extrudes the construction waste through the lower crushing slope to crush the construction waste, and after the convex end of the cam is separated from the supporting ring, the crushing body is automatically reset by the gravity of the crushing body itself, the gravity and impact of the material above.

[0038] The phase difference of the cams 36 below the two crushing bodies 322 is 180°, so that the two cams can be staggered to drive the upward movement of the crushing bodies, which can effectively reduce the torque of the main shaft, thereby effectively reducing the load of the motor.

[0039] As shown in Figure 3 , the two crushing bodies 322 are provided with a recessed groove part 323 at the joint surface therebetween, and the recessed groove part can reduce the contact area between the two crushing bodies, thereby reducing the friction resistance therebetween and ensuring the smooth upward movement and downward reset of the crushing bodies.

[0040] As shown in Figure 4 , the two crushing bodies 322 are provided with two supporting shafts 34 at the lower ends of the two crushing bodies 322, two cams 36 are correspondingly arranged below each crushing body 322, and each cam 36 is fixed on the corresponding main shaft 37.

[0041] Two main shafts 37 are fixed with a synchronous gear 39 respectively, two synchronous gears 39 are connected through an idle gear 40, the idle gear 40 is rotatably connected in the crushing box 31, one of the synchronous gears 39 is engaged with a driving gear 41, the driving gear 41 is fixed on the output shaft of the motor 38. The motor drives the driving gear to rotate, the driving gear drives the corresponding synchronous gear to rotate, the synchronous gear drives the other synchronous gear to rotate synchronously through the idle gear, so that the two main shafts rotate synchronously, the main shaft drives the crushing monomer to move up through the cam, etc. The stability of the crushing monomer moving up can be improved by driving two cams for each crushing monomer.

[0042] Working principle: the construction waste 9 is conveyed upward by the feeding conveyor 2, and when it is conveyed to the upper end of the feeding conveyor, it automatically falls into the upper feeding cavity 311 and enters the middle crushing cavity and between the upper crushing slope 315 and the lower crushing slope 321. The motor drives the main shaft to rotate, the main shaft drives the cam 36 to rotate, the cam drives the support ring to move up through the convex end, and the support ring drives the crushing monomer 32 to move up through the support shaft. With the up-down movement of the crushing monomer, the distance between the upper crushing slope and the lower crushing slope changes, so as to extrude the construction waste. The crushing cone 33 on the upper crushing slope can conveniently crush the construction waste when the crushing monomer moves up. Since the slope of the upper crushing slope is greater than that of the lower crushing slope, the passage between the upper crushing slope and the lower crushing slope is set to be large at the top and small at the bottom, the construction waste can be piled to a certain extent, so that the construction waste can pass through the crushing process as much as possible. After the convex end of the cam is separated from the support ring, the crushing monomer automatically moves down and resets under the gravity and impact of the material above.

[0043] The above is only the preferred embodiment of the present application, it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, the above assumptions of these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A primary crushing feeding mechanism for construction waste, comprising two impact crushers (1) arranged side by side and an inclined feeding conveyor (2), the middle upper part of the two impact crushers (1) is fixedly provided with a primary crushing mechanism (3), and the primary crushing mechanism (3) is connected to the upper end of the feeding conveyor (2); characterized in that: The primary crushing mechanism (3) comprises a crushing box (31) with an upper feeding cavity (311), a middle crushing cavity (312) and a lower driving cavity (313) formed therein, and a discharge passage (314) downwardly arranged at each end of the middle crushing cavity (312); the middle crushing cavity (312) and the lower driving cavity (313) are provided with a lifting crushing body (32); The middle crushing cavity (312) is formed with a pair of left and right symmetrical upper crushing inclined surfaces (315) with high inner part and low outer part; the crushing body (32) is formed with a pair of left and right lower crushing inclined surfaces (321) with high inner part and low outer part, which are located below the corresponding upper crushing inclined surfaces (315); the lower crushing inclined surfaces (321) and the upper crushing inclined surfaces (315) are connected with the discharge passage (314) at the low ends thereof.

2. A primary crushing feed mechanism for construction waste material as claimed in claim 1 wherein: The upper crushing inclined surfaces (315) are fixed with a plurality of pyramid-shaped crushing cones (33).

3. A primary crushing feed mechanism for construction waste material as claimed in claim 2, wherein: The slope of the upper crushing inclined surfaces (315) is greater than that of the lower crushing inclined surfaces (321).

4. A primary crushing feed mechanism for construction waste material as claimed in claim 1, wherein: The crushing body (32) is lifted upward by a cam mechanism and is reset by the self-weight thereof.

5. A primary crushing feed mechanism for construction waste material as claimed in claim 4 wherein: The crushing body (32) is divided into two crushing units (322) which are slidingly connected to each other in the lower driving cavity (313); The lower part of the crushing unit (322) is rotatably connected with a support shaft (34), the support shaft (34) is sleeved with a support ring (35), the support ring (35) abuts against a cam (36) located below the support ring (35), the cams (36) below the two crushing units (322) are fixed on the same main shaft (37), and the main shaft (37) is connected with a motor (38) for driving the rotation of the main shaft (37).

6. A primary crushing feed mechanism for construction waste material as claimed in claim 5 wherein: The phase difference of the cams (36) below the two crushing units (322) is 180°.

7. A primary crushing feed mechanism for construction waste material as claimed in claim 6 wherein: The two crushing units (322) are provided with a sink groove (323) at the joint surface therebetween.

8. A primary crushing feed mechanism for construction waste material as claimed in claim 6, wherein: The lower end of the crushing unit (322) is provided with two support shafts (34) in parallel, each crushing unit (322) is correspondingly provided with two cams (36) below the crushing unit (322), and each cam (36) is fixed on a corresponding main shaft (37); Each of the two main shafts (37) is fixed with a synchronous gear (39), the two synchronous gears (39) are connected by an idle gear (40); one of the synchronous gears (39) is engaged with a driving gear (41), and the driving gear (41) is fixed on the output shaft of the motor (38).

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