CN210614290U

CN210614290U - Difficult stifled cage sieve and difficult stifled screening machine that rolls

Info

Publication number: CN210614290U
Application number: CN201921428092.8U
Authority: CN
Inventors: 白一凡; 马相浮
Original assignee: Shandong Huiying Heavy Machinery Co ltd
Current assignee: Shandong Huiying Heavy Machinery Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-05-26
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a difficult stifled cage sieve and difficult stifled screening machine that rolls. The rolling cage sieve difficult to block comprises two fixed end plates, a plurality of sieve shafts are uniformly distributed in the circumferential direction between the two fixed end plates, a sieving gap is formed between every two adjacent sieve shafts, the sieve shafts are fixed sieve shafts, the rest sieve shafts are rotating sieve shafts, and a rotating connecting device and an axial positioning device are respectively arranged between the rotating sieve shafts and the two fixed end plates; the frame is located fixed end dish department is fixed and is equipped with annular leading truck, the fixed follow-up drive wheel that is equipped with of tip of rotating screen axle. The utility model discloses utilize annular leading truck makes follow-up drive wheel can drive to correspond the rotating sieve axle rotates, like this the rotating sieve axle also can take place the rotation when difficult stifled cage sieve rotates, and the coal slime of adhesion drops under the rotation activity easily, can reduce the jam condition by a wide margin and take place.

Description

Difficult stifled cage sieve and difficult stifled screening machine that rolls

Technical Field

The utility model relates to a screening equipment technical field especially relates to a difficult stifled cage sieve that rolls and difficult stifled screening machine.

Background

Boilers in thermal power plants typically burn only coal gangue particles below a certain particle size, which requirement reduces the extent of fragmentation of the coal feed. The particles within the coal feed that meet the particle size requirements are typically screened prior to combustion. Because the coal raw material contains a certain amount of water to form a coal slurry state, the coal raw material has strong viscosity and poor flowability, and conventional vibrating screens, drum screens, roller screens and the like are easy to block screen holes or screening gaps by the coal slurry, so that a good screening effect cannot be realized. The existing work of screening coal raw materials by adopting a rolling cage screen is also adopted, the structure of the rolling cage screen generally comprises two fixed end discs which are oppositely arranged and are installed on a rack in a rotating mode together, a plurality of screen shafts are uniformly distributed between the two fixed end discs along the circumferential direction, and a screening gap is formed between the two screen shafts. Although the rolling cage screen utilizes the screening gap with longer length to improve the screening effect, the coal slime still can be continuously adhered between the two screen shafts, the screening gap can be blocked by the coal slime after a long time, and the blocking problem is not solved fundamentally. The reason is that the screen shaft is fixedly arranged, the coal slime is adhered and then moves synchronously with the screen shaft, no external force is applied between the screen shaft and the screen shaft, the coal slime is not easy to fall off, and the screen shaft is adhered continuously to cause blockage of a screening gap.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a reduce the jam condition by a wide margin and take place and simple structure, low in manufacturing cost is difficult for stifled cage sieve and difficult stifled screening machine.

In order to solve the technical problem, the technical scheme of the utility model is that: the rolling cage sieve is not easy to block and comprises two fixed end plates which are oppositely arranged and rotatably installed on a rack, a plurality of sieve shafts which are uniformly distributed in the circumferential direction are arranged between the two fixed end plates, a sieving gap is formed between every two adjacent sieve shafts, the sieve shafts are fixed sieve shafts fixedly connected with the two fixed end plates, the rest sieve shafts are rotating sieve shafts rotatably connected with the two fixed end plates, and a rotating connecting device and an axial positioning device are respectively arranged between the rotating sieve shafts and the two fixed end plates; the frame is located fixed end disc department is fixed and is equipped with annular leading truck, the end portion that the rotating screen axle stretches out fixed end disc is fixed be equipped with the follow-up drive wheel that the annular leading truck corresponds.

Preferably, the annular guide frame is a guide cylinder fixedly arranged on the frame, and an inner circumferential surface of the guide cylinder corresponds to an outer circumferential surface of the follower drive wheel.

As a preferable technical scheme, the axial positioning device comprises two positioning check rings or positioning nuts installed on the rotating screen shaft, and the positioning check rings or the positioning nuts are simultaneously located between the two fixed end discs or simultaneously located outside the two fixed end discs.

As a preferred technical scheme, the rotary connecting device comprises rotary connecting holes correspondingly arranged on the two fixed end discs, and the two rotary connecting holes are in clearance fit with the corresponding rotary screen shafts.

As a preferable technical scheme, the number of the rotary screen shafts is the same as that of the fixed screen shafts, and the rotary screen shafts and the fixed screen shafts are arranged at intervals.

As an optimized technical scheme, a middle reinforcing plate is fixedly arranged between the two fixed end discs on the fixed sieve shaft, and the rotary connecting device is also arranged between the rotary sieve shaft and the middle reinforcing plate.

As the preferred technical scheme, an end part discharging spiral is fixedly arranged between the two fixed end discs, and end part discharging holes are respectively arranged on the fixed end discs.

The screening machine comprises a rack, wherein a plurality of rolling cage screens which are not easy to block are sequentially arranged on the rack, and the rolling cage screens which are not easy to block are jointly connected with a rolling driving device; the anti-blocking device is characterized in that a feed inlet is formed in the top end of the rack, the top of the anti-blocking rolling cage sieve is provided with a feed inlet, the rack is provided with a tail end, a large particle discharge port is formed in the lower portion of the anti-blocking rolling cage sieve, the rack is provided with a plurality of small particle discharge ports, and the rack is provided with a large particle discharge port and a small particle discharge port.

Since the technical scheme is used, the utility model discloses utilize annular leading truck makes follow-up drive wheel can drive to correspond the rotation sieve axle rotates, like this the rotation also can take place the rotation when the difficult stifled cage sieve that rolls rotates to the rotation sieve axle, and the coal slime of adhesion drops under the rotation activity easily, can reduce the jam condition by a wide margin and take place. The utility model discloses simple structure, low in manufacturing cost.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

FIG. 1 is a schematic structural view of a roller cage screen which is not easy to block in the embodiment of the utility model;

3 FIG. 3 2 3 is 3 an 3 enlarged 3 schematic 3 view 3 of 3 the 3 A 3- 3 A 3 structure 3 of 3 FIG. 31 3; 3

FIG. 3 is an enlarged schematic view of the B-B structure of FIG. 1;

FIG. 4 is a schematic structural diagram of a sieving machine which is not easy to block in the embodiment of the present invention;

fig. 5 is a schematic top view of the structure of fig. 4.

In the figure: 1-difficult blocking rolling cage sieve; 2-a frame; 21-a feed inlet; 22-large particle discharge port; 23-small particle discharge port; 24-a material separating plate; 25-a rolling drive; 3-fixing the end disc; 31-end discharge port; 4-a sieve shaft; 41-screening gap; 42-fixing the sieve shaft; 43-rotating sieve shaft; 44-a follower drive wheel; 5-an annular guide frame; 6-middle reinforcing plate; 7-end discharge screw.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, exemplary embodiments of the invention are described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1 to 5 together, the roller cage screen 1 is not easy to block and comprises two fixed end discs 3 which are arranged oppositely and rotatably mounted on a frame 2, and the rotary mounting is well known to those skilled in the art and will not be described in detail herein.

A plurality of screen shafts 4 which are uniformly distributed in the circumferential direction are arranged between the two fixed end discs 3, a screening gap 41 is formed between every two adjacent screen shafts 4, particles which meet the particle size requirement can fall from the screening gap 41, and particles with larger particle size are blocked on the screening gap 41.

Wherein a plurality of sieve axle 4 is with two fixed end disc 3 fixed connection's fixed sieve axle 42, all the other sieve axle 4 is with two fixed end disc 3 rotates the rotation sieve axle 43 of connecting, fixed sieve axle 42 plays and makes two fixed end disc 3 synchronous pivoted effect, rotation sieve axle 43 can make self epaxial and the screening clearance 41 department of both sides be difficult for the more coal slime of adhesion because of the rotation effect. In this embodiment, the number of the rotating screen shafts 43 is the same as that of the fixed screen shafts 42, and the rotating screen shafts and the fixed screen shafts are arranged at intervals. Therefore, the self-rotation function of the rotary screen shaft 43 exists at each screening gap 41, and the blocking situation can be greatly reduced. Of course, a mode that after two adjacent rotary screen shafts 43 form a group and two adjacent fixed screen shafts 42 form a group, the groups are arranged at intervals can also be adopted; and the rotary screen shafts 3 in groups of two, three or more adjacent rotary screen shafts 43 and a single fixed screen shaft 42, etc.

A rotary connecting device and an axial positioning device are respectively arranged between the rotary screen shaft 43 and the two fixed end discs 3. The rotation connecting device ensures that the rotation sieve shaft 43 can rotate on the fixed end disc 3, the rotation connecting device comprises two rotation connecting holes correspondingly arranged on the fixed end disc 3, and the two rotation connecting holes are in clearance fit with the corresponding rotation sieve shaft 43, the structure is simple and easy to set, and the requirement of the slow rotation speed of the embodiment can be met. The axial positioning device can ensure the stability of the axial position of the rotating screen shaft 43, and the rotating screen shaft 43 is driven to rotate from the end part in the embodiment. The axial positioning device comprises two positioning check rings or positioning nuts which are arranged on the rotating screen shaft 43, and the positioning check rings or the positioning nuts are simultaneously positioned between the two fixed end discs 3 or simultaneously positioned outside the two fixed end discs 3. The arrangement of the positioning retainer ring and the positioning nut is well known to those skilled in the art, and will not be described herein and not shown in the drawings.

An annular guide frame 5 is fixedly arranged on the rack 2 at the fixed end disc 3, and a follow-up driving wheel 44 corresponding to the annular guide frame 5 is fixedly arranged at the end part of the rotary screen shaft 43 extending out of the fixed end disc 3; when the fixed end disc 3 rotates, the follow-up driving wheel 44 can passively rotate due to the action of friction force between the follow-up driving wheel and the annular guide frame 5, so as to drive the corresponding rotary screen shaft 43 to rotate.

The following driving wheel 44 may be fixed by welding, or may be fitted to the end of the rotary screen shaft 43 in an interference manner, or may be configured by a shoulder, a retainer ring, and a key, or may be configured by a radial countersunk head bolt disposed on the outer circumferential surface of the following driving wheel 44, and so on, which are known to those skilled in the art according to the description and are not described herein and not shown in the drawings.

The annular guide frame 5 in this embodiment is a guide cylinder fixedly arranged on the frame 2, and the inner circumferential surface of the guide cylinder corresponds to the outer circumferential surface of the follower drive wheel 44. Of course, this embodiment may also adopt a cylinder or a column with a smaller outer diameter on the frame 2, and the outer peripheral surface of the cylinder or the column corresponds to the outer peripheral surface of the follower driving wheel 44.

This embodiment shows both ends of rotating sieve axle 43 all set up follow-up drive wheel 44, correspond on the frame 2 and set up two annular leading truck 5, both ends drive jointly can make rotating sieve axle 43 is the rotation more easily, reduces the jamming. Of course this embodiment only one end of rotating sieve axle 43 sets up follow-up drive wheel 44, it sets up one to correspond in the frame 2 annular leading truck 5, also can realize right equally rotating sieve axle 43's drive effect, these structural schemes all should be in the utility model discloses within the scope of protection.

The middle reinforcing plate 6 is fixedly arranged between the two fixed end discs 3 on the fixed sieve shaft 42, and the middle reinforcing plate 6 supports and reinforces the middle of all the sieve shafts 4 to reduce the bending deformation of the sieve shafts 4. The rotating connecting device is also arranged between the rotating sieve shaft 43 and the middle reinforcing plate 6, namely, the middle reinforcing plate 6 is also provided with a rotating connecting hole, and the rotating connecting hole is in clearance fit with the rotating sieve shaft 43 correspondingly.

An end discharge spiral 7 is fixedly arranged between the two fixed end discs 3, and end discharge holes 31 are respectively arranged on the fixed end discs 3. The jam condition of this embodiment is improved by a wide margin, and the coal slime volume that falls into a plurality of sieve axle 4 intermediate spaces can increase by a wide margin, for further reducing the coal slime whereabouts ejection of compact obstacle, this embodiment tip ejection of compact spiral 7 can be two the rotation in-process of fixed end dish 3 is followed partial coal slime from both ends tip discharge gate 31 is released. Because of this embodiment exists middle part reinforcing plate 6, this embodiment is in middle part reinforcing plate 6 and two set up respectively between the fixed end dish 3 tip ejection of compact spiral 7, and two the spiral opposite direction of tip ejection of compact spiral 7 conveniently realizes the both ends ejection of compact.

Difficult stifled screening machine, include frame 2, be equipped with a plurality of in proper order in frame 2 difficult stifled cylinder mould sieve 1, difficult stifled cylinder mould sieve 1 is connected with roll drive arrangement 25 jointly. The roller driving motor can be realized by a rolling driving motor and transmission, which are well known to those skilled in the art and will not be described herein, and of course, the rolling driving device 25 drives the fixed end disc 3 on the same side of the rolling cage screen 1. The utility model discloses a screening machine for blocking cage sieve, including frame 2, difficult stifled cage sieve 1, frame 2, it is equipped with feed inlet 21 to lie in the head end in the frame 2 the top of difficult stifled cage sieve 1 is equipped with feed inlet 21, it is terminal to lie in the frame 2 the below of difficult stifled cage sieve 1 is equipped with large granule discharge gate 22, it is a plurality of to lie in the frame 2 be equipped with tiny particle discharge gate 23 under difficult stifled cage sieve 1, lie in the frame 2 large granule discharge gate 22 with be equipped with.

This embodiment utilizes annular leading truck 5 makes follow-up drive wheel 44 can drive and correspond rotating sieve axle 43 rotates, like this rotating sieve axle 43 also can take place the rotation when difficult stifled cage sieve 1 rotates, and the coal slime of adhesion drops under the rotation activity easily, and this embodiment more through rotating sieve axle 43 and the fixed sieve axle 42 that mutual interval set up for every screening clearance 41 department all has the rotation effect to exist, has reduced the jam condition to take place by a wide margin. The utility model discloses there is not complicated bearing, drive isotructure, simple structure, low in manufacturing cost.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Difficult stifled cage sieve that rolls includes two relative settings and rotates the fixed end dish of installing in the frame, its characterized in that: a plurality of sieve shafts which are uniformly distributed in the circumferential direction are arranged between the two fixed end discs, a sieving gap is formed between every two adjacent sieve shafts, the sieve shafts are fixed sieve shafts which are fixedly connected with the two fixed end discs, the rest sieve shafts are rotating sieve shafts which are rotatably connected with the two fixed end discs, and a rotating connecting device and an axial positioning device are respectively arranged between the rotating sieve shafts and the two fixed end discs; the frame is located fixed end disc department is fixed and is equipped with annular leading truck, the end portion that the rotating screen axle stretches out fixed end disc is fixed be equipped with the follow-up drive wheel that the annular leading truck corresponds.

2. The difficult-to-block roller cage screen of claim 1, characterized in that: the annular guide frame is a guide cylinder fixedly arranged on the rack, and the inner circumferential surface of the guide cylinder corresponds to the outer circumferential surface of the follow-up driving wheel.

3. The difficult-to-block roller cage screen of claim 1, characterized in that: the axial positioning device comprises two positioning check rings or positioning nuts which are arranged on the rotating screen shaft, and the positioning check rings or the positioning nuts are simultaneously positioned between the two fixed end discs or simultaneously positioned outside the two fixed end discs.

4. The difficult-to-block roller cage screen of claim 1, characterized in that: the rotary connecting device comprises rotary connecting holes correspondingly arranged on the two fixed end discs, and the two rotary connecting holes are in clearance fit with the corresponding rotary sieve shaft.

5. The difficult-to-block roller cage screen of claim 1, characterized in that: the rotating sieve shaft and the fixed sieve shaft are the same in number and are arranged at intervals.

6. The difficult-to-block roller cage screen of claim 1, characterized in that: the fixed sieve shaft is positioned between the two fixed end discs and is fixedly provided with a middle reinforcing plate, and the rotary sieve shaft and the middle reinforcing plate are also provided with the rotary connecting device.

7. The difficult-to-block roller cage screen of claim 1, characterized in that: an end part discharging spiral is fixedly arranged between the two fixed end discs, and end part discharging holes are respectively arranged on the fixed end discs.

8. Difficult stifled screening machine, including the frame, its characterized in that: a plurality of difficult-to-block rolling cage sieves as claimed in any one of claims 1 to 7 are sequentially arranged on the machine frame, and the difficult-to-block rolling cage sieves are commonly connected with a rolling driving device; the anti-blocking device is characterized in that a feed inlet is formed in the top end of the rack, the top of the anti-blocking rolling cage sieve is provided with a feed inlet, the rack is provided with a tail end, a large particle discharge port is formed in the lower portion of the anti-blocking rolling cage sieve, the rack is provided with a plurality of small particle discharge ports, and the rack is provided with a large particle discharge port and a small particle discharge port.