CN110918162A

CN110918162A - Crushing pair with screen frame

Info

Publication number: CN110918162A
Application number: CN201910792968.5A
Authority: CN
Inventors: 朱兴良
Original assignee: YIWU MULTI-UNION MINING MACHINERY SUPERMARKET Co Ltd
Current assignee: YIWU MULTI-UNION MINING MACHINERY SUPERMARKET Co Ltd
Priority date: 2018-08-19
Filing date: 2019-08-19
Publication date: 2020-03-27
Also published as: CN110918163A

Abstract

The invention provides a crushing pair with a screen frame, which belongs to the technical field of mining machinery and comprises a fixed jaw and a movable jaw, wherein a crushing cavity is formed between the fixed jaw and the movable jaw, the movable jaw is driven by a driving device to be close to or far away from the fixed jaw to crush materials, and the bottom of the crushing cavity is provided with a discharge port; the lower part of the movable jaw is provided with a connecting arm, the lower end of the connecting arm is provided with a screen frame, and the screen frame is positioned below the discharge port and can accept mineral aggregate falling from the crushing cavity. According to the invention, the screen frame is directly arranged at the lower part of the movable jaw, and screening can be completed without additionally arranging a power device, so that the manufacturing and running costs of equipment are reduced, and the crushing production line is simplified.

Description

Crushing pair with screen frame

Technical Field

The invention belongs to the technical field of mining machinery, and particularly relates to a crushing pair with a screen frame.

Background

Crushing and screening are the two most basic and common operations in the field of mining machinery, and have a common structural feature, namely that the crushing and screening all comprise an eccentrically arranged main shaft, the main shaft is called an eccentric shaft in crushing equipment, and is called an excitation shaft in screening equipment, and a crushing pair is the most main component of a jaw crusher and is used for crushing mineral aggregates under the driving of the eccentric shaft. The function of the eccentric shaft in the crusher is to cause the crusher to produce a crushing stroke, thereby effectively crushing; the function of the vibration exciting shaft is to enable the vibrating screen to generate an exciting force, so that the vibrating screen can effectively screen. The functions of the crusher and the vibrating screen are different, but the structures of the crusher and the vibrating screen are the same, in the existing crushing production line, the crusher and the vibrating screen are both independently arranged, and the vibrating screen needs to be provided with an independent vibration exciter and an independent power device, so that the manufacturing cost, the operating cost and the self-consumption power are increased, and a conveying device needs to be additionally arranged to finish ore material conveying between the crusher and the vibrating screen, so that the whole crushing production line is complicated and the occupied area is large.

Disclosure of Invention

The invention aims to change the current situation that vibration exciters and power devices are independently arranged on vibrating screens in the prior art so that the vibrating screens are complex in structure and high in cost, and provides a crushing pair with a screen frame.

The purpose of the invention can be realized by the following technical scheme:

a crushing pair with a screen frame comprises a fixed jaw and a movable jaw, wherein a crushing cavity is formed between the fixed jaw and the movable jaw, the movable jaw is driven by a driving device to be close to or far away from the fixed jaw to crush mineral aggregate, and a discharge port is formed at the bottom of the crushing cavity; the movable jaw crusher is characterized in that the lower part of the movable jaw is provided with a connecting arm, the lower end of the connecting arm is provided with a screen frame, and the screen frame is positioned below a discharge port and used for receiving and screening mineral aggregates falling from a crushing cavity.

The lower part of moving the jaw passes through linking arm installation reel, moves the jaw and drives the reel motion in the motion and accomplish the screening, and the reel is located the below of bin outlet, and the crushing is vice carries out the direct emission of bin outlet after the mineral aggregate is broken and sieves on the reel, need not other conveyor and shifts the mineral aggregate.

Preferably, the reel is a rectangular frame structure, at least one layer of sieve plate with sieving gaps is arranged in the reel, the sieve plate is arranged on the supporting strips in the reel, and the front baffle and the side plates are arranged on the edge of the sieve plate in a surrounding mode. The sieve sets up on the bearing strip, and the bearing strip is used for providing the holding power for the sieve, and preceding baffle, curb plate enclose the edge that keeps off at the sieve and are used for preventing the mineral aggregate from scattering, and the simple structure of frame formula, and the feeding region is big enough, can guarantee that the mineral aggregate falls into in the reel.

Preferably, the other end corresponding to the front baffle is provided with a discharge hole, and the screen frame inclines towards the discharge hole. The screen frame and the horizontal plane form a certain angle and incline to the discharge hole, so that the mineral aggregate after being screened can be directly discharged, the mineral aggregate can be continuously screened in the process of crushing the auxiliary crushed mineral aggregate, and the processing capacity is improved.

Preferably, the number of the connecting arms is at least two, the lower ends of the connecting arms are respectively and symmetrically installed on the two side plates of the screen frame through high-strength bolts, the upper ends of the two connecting arms are connected together through a U-shaped installation part, the U-shaped installation part and the two connecting arms are integrally formed, installation holes are formed in the U-shaped installation part, the U-shaped installation part is installed on the lower portion of the movable jaw through the high-strength bolts, and the high-strength bolts are provided with gaskets. The linking arm is two at least and symmetry installation to guarantee the vice balance of whole breakage, the upper end of linking arm is installed in the lower part of moving the jaw through integrated into one piece's U type installed part, adopts U nature installed part can follow that two sides and the trilateral jaw of holding tightly in the back move the jaw, connects more firmly reliably, and the connection position all adopts high strength bolt to install, and it is firm to guarantee the firm of connection position, and the setting of packing ring can prevent effectively that high strength bolt from taking place not hard up moving the jaw high-speed operation in.

Preferably, the sieve plate is provided with a plurality of layers which are parallel to each other and are arranged in the sieve frame from top to bottom, the sieving gaps of the sieve plate are sequentially reduced from top to bottom, the sieve plate with a plurality of layers can realize multi-stage sieving,

preferably, the sieve plate is of a screen mesh structure, and according to different working conditions, when the particle size of the crushed mineral aggregate is smaller, the sieve plate can be directly used for sieving, so that the sieving effect is improved.

Preferably, the sieve plate is of a sieve bar structure, when the particle size of the crushed mineral aggregate is large, the sieve plate can be primarily sieved through the sieve bars, the situation that the strength of the sieve is insufficient or the blanking speed is too slow is avoided, and then the sieve plate is configured to sieve again according to specific conditions.

The main technical points of the invention are as follows:

the crushing pair is an important mechanism of a jaw crusher, the crushing of mineral aggregate is completed through the extrusion of the crushing pair, the existing jaw crusher utilizes a crank rocker mechanism, the upper part of a movable jaw obtains a crushing stroke in the horizontal direction by an eccentric driving shaft, under the structure, the movable jaw only has the characteristic of doing work in a half stroke when the crushing of the horizontal stroke does work, wherein the other half stroke is an idle return stroke, only completes discharging and does not do work, the idle return stroke of the movable jaw can be fully utilized by installing a screen frame at the lower part of the movable jaw, so that the return stroke motion of the movable jaw plays a role of screening and doing work, the kinetic energy provided by the eccentric driving shaft is fully utilized, and the movable jaw is in a full-stroke working state; the moving process of the sieve plate forms a crushing stroke, the crushing work is completed, the sieve frame is driven to move together, the sieve frame is driven to move while the material is discharged in the return stroke, the sieving work is completed, the crank rocker mechanism has the characteristic of quick return, the mineral aggregate on the sieve frame can be fully vibrated by swinging in the return stroke, and then the mineral aggregate falls to each position of the sieve plate fully, so that the material accumulation can be avoided, the mineral aggregate can be fully sieved, and the sieving efficiency and the sieving effect are improved; the reel with move jaw fixed connection, follow and move the jaw and move together, move the jaw and be unanimous under the drive of eccentric drive shaft the motion trail, the motion trail of reel is also unanimous, therefore the amplitude of reel is fixed, can guarantee that the screening effect of mineral aggregate is unanimous.

Crushers and vibrating screens are important equipment in the forward run of a crushing line, both of which are driven by an eccentric shaft. The crusher utilizes the eccentric shaft to generate a crushing stroke to finish crushing operation; the vibrating screen utilizes the eccentric shaft to generate vibration excitation motion to complete screening operation. The vibration exciter of the vibrating screen is removed, the vibrating screen is arranged at the lower part of the movable jaw, and the crushing pair is utilized to drive the screen frame to move to complete screening when acting; meanwhile, the vibration exciting side effect of the eccentric driving shaft is fully utilized, vibration generated when the crushing pair carries out crushing operation is fully utilized, and the screening effect is further improved.

The main structural characteristics of the invention are as follows:

the vibration exciter is removed from the screen frame, no additional power drive is needed, and the screen frame is arranged at the lower part of the movable jaw through a connecting arm; the screen frame can be internally provided with a single-layer screen plate or a plurality of layers of screen plates.

Compared with the prior art, the invention has the following beneficial effects:

1. the vibration exciter and the power device of the vibrating screen are removed, the movable jaw is used for driving the screen frame to do work, the idle return stroke of the movable jaw is fully used for screening, the moving stroke of the movable jaw is horizontally extruded to perform crushing work, the return stroke of the movable jaw has a quick return characteristic, the screen frame is driven to screen, the movable jaw can realize the whole-course work, the energy is greatly saved, and the cost is reduced.

2. The movable jaw is driven by the eccentric driving shaft, the motion track and the motion frequency are consistent, the screen frame is fixedly connected with the movable jaw and moves under the driving of the movable jaw, the motion track and the motion frequency are also consistent, so that the vibration pairs of the screen frame during screening of mineral materials are consistent, and the consistency of the screening effect can be ensured.

3. The screen frame can utilize the excitation adverse effect that produces when broken vice crushing operation to carry out the screening operation simultaneously, further improves the screening effect, further energy-conservation.

4. The equipment of the crushing production line is simplified, and the manufacturing cost, the running cost and the maintenance cost are reduced.

5. The equipment structure is more compact, and the occupied area is small.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a screen frame structure of a screen structure;

FIG. 3 is a schematic view of a screen frame structure of the screen bar structure;

FIG. 4 is a schematic view of a structure of a screen frame of a double-deck screen structure;

in the figure: 1. fixing a jaw; 2. moving the jaw; 3. a discharge outlet; 4. a connecting arm; 5. a screen frame; 51. a side plate; 52. a front baffle; 53. a sieve plate; a U-shaped mounting member; 53. a sieve plate; 531. a first screen deck; 532. a second screen deck.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example 1: as shown in fig. 1-3, a crushing pair with a screen frame comprises a fixed jaw 1 and a movable jaw 2, a crushing cavity is formed between the fixed jaw 1 and the movable jaw 2, the movable jaw 2 is driven by a driving device to be close to or far away from the fixed jaw 1 to crush materials, and a discharge opening 3 is arranged at the bottom of the crushing cavity; the lower part of the movable jaw 2 is provided with a connecting arm 4, the lower end of the connecting arm 4 is provided with a screen frame 5, and the screen frame 5 is positioned below the discharge port 3; the connecting arms 4 are two, the lower ends of the connecting arms are respectively and symmetrically arranged on the two side plates 51 of the screen frame through high-strength bolts, the upper ends of the connecting arms are connected together through a U-shaped mounting part 6, the U-shaped mounting part 6 and the two connecting arms 4 are integrally formed, mounting holes are formed in the U-shaped mounting part 6, the connecting arms are arranged on the lower portion of the movable jaw 2 through high-strength bolts, and the high-strength bolts are provided with gaskets. Screen frame 5 is rectangle frame structure, is provided with the sieve 53 that the one deck has the screening clearance in the screen frame 5, and sieve 53 installs on the bearing strip in screen frame 5, and preceding baffle 52, curb plate 51 enclose the edge of keeping off at sieve 53, and the corresponding other end of preceding baffle 52 is provided with the discharge gate, and screen frame 5 is to the slope of discharge gate direction, personally submits 5 degrees angles with the level. The screen 53 is a screen bar structure. The crushing pair with the screen frame has the working process that after mineral aggregate is crushed by the crushing pair in the crushing cavity, the mineral aggregate falls onto the screen plate 53 of the screen frame 5 from the discharge port 3, the movable jaw 2 is driven by the driving device to be close to or far away from the fixed jaw 1 to crush the mineral aggregate, the mineral aggregate is crushed by the crushing pair in the crushing cavity and falls onto the screen plate 53 of the screen frame 5, the screen frame 5 moves along with the movable jaw 2 to sieve the mineral aggregate, the mineral aggregate with the particle size smaller than the sieving gap of the screen plate 53 is sieved out from the sieving gap, and the mineral aggregate with the particle size larger than the sieving gap is discharged from a discharge port of the screen frame 5 under the action of vibration and gravity.

Example 2: as shown in fig. 3, the difference from embodiment 1 is that a double-deck screen deck is arranged in the screen frame 5, the two-deck screen deck is parallel to each other and arranged in the screen frame from top to bottom, for convenience of description, the first screen deck 531 and the second screen deck 532 are respectively defined as a first screen deck 531 and a second screen deck 532 from top to bottom, the first screen deck 531 is of a screen bar structure, the second screen deck 532 is of a screen mesh structure, the screening gap of the first screen deck 531 is larger than the screening gap of the second screen deck 532, the mineral aggregate falls from the discharge port 3 onto the first screen deck 531 of the screen frame 5 after being crushed by the crushing pair, the screen frame 5 moves along with the movable jaw 2 to perform the shape screening of the mineral aggregate, the mineral aggregate with the particle size larger than the screening gap of the first screen deck 531 is discharged from the corresponding discharge port, the mineral aggregate with the particle size smaller than the screening gap of the first screen deck 531 falls from the gap of the screen bar onto the second screen deck 532 for secondary screening, the mineral aggregate with the particle size smaller than the screening gap of the second screen plate 532 is directly discharged from the meshes of the screen cloth.

In the practical production application, still can be according to the operating mode demand, set up more multilayer sieve 53 in reel 5, carry out hierarchical screening to the mineral aggregate that accomplishes the initial breakage, carry the mineral aggregate pertinence of different particle sizes to different broken grades and carry out the breakage, improve the efficiency of whole broken production line, reduce the power consumption.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended sense, i.e., in a sense equivalent to "including at least … …", and not in a closed sense, i.e., in a sense not to be interpreted as "including only … …". The orientations and positional relationships indicated by "front", "rear", "side", "inner", "upper", "lower", and the like are based on the orientations and positional relationships shown in the drawings, and are for convenience of description only, and thus, are not to be construed as limitations of the present application. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art should cover all the changes, modifications, additions and substitutions within the spirit of the present invention.

Claims

1. A crushing pair with a screen frame comprises a fixed jaw and a movable jaw, wherein a crushing cavity is formed between the fixed jaw and the movable jaw, the movable jaw is driven by a driving device to be close to or far away from the fixed jaw to crush mineral aggregate, and a discharge port is formed at the bottom of the crushing cavity; the movable jaw crusher is characterized in that a connecting arm is fixedly mounted on the lower portion of the movable jaw, a screen frame is fixedly mounted at the other end corresponding to the connecting arm and moves along with the movable jaw, and the screen frame is located below a discharge port and used for receiving and screening mineral aggregates falling from a crushing cavity.

2. A crushing pair with a screen frame according to claim 1, wherein at least one screen plate with a screening gap is arranged in the screen frame, and the edge of the screen plate is provided with a front baffle plate and a side plate.

3. The crushing pair with the screen frame as claimed in claim 2, wherein the other end of the front baffle plate is provided with a discharge port, and the screen frame is inclined towards the discharge port.

4. The crushing pair with the screen frame as claimed in claim 2 or 3, wherein the number of the connecting arms is two, the lower ends of the two connecting arms are symmetrically installed on the two side plates of the screen frame respectively through high-strength bolts, the upper ends of the two connecting arms are connected together through a U-shaped installation part, the U-shaped installation part and the two connecting arms are integrally formed, the U-shaped installation part is provided with an installation hole, the U-shaped installation part is installed on the lower portion of the movable jaw through the high-strength bolts, and the high-strength bolts are provided with gaskets.

5. The crushing pair with the screen frame as claimed in claim 4, wherein the screen plates are a plurality of layers, and are arranged in parallel in the screen frame from top to bottom, and the screening gaps of the screen plates are reduced from top to bottom.

6. A crushing pair with a screen frame according to claim 2 or 5, characterised in that the screen plate is of a screen mesh structure.

7. A crushing pair with a screen frame according to claim 2 or 5, characterised in that the screen plate is of a screen bar structure.