CN113751313A

CN113751313A - Rotary screen

Info

Publication number: CN113751313A
Application number: CN202111069869.8A
Authority: CN
Inventors: 范文海; 贾乐乐; 张子强; 王凤成; 王中营; 王志山
Original assignee: Jiangsu Famsun Intelligent Technology Co Ltd
Current assignee: Jiangsu Famsun Intelligent Technology Co Ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2021-12-07

Abstract

The invention relates to a rotary screen, comprising: a frame; the screen body is suspended on the rack; the driving mechanism comprises a transmission part and a driving part, the transmission part is connected with the screen body so as to drive the screen body to swing relative to the rack, the transmission part comprises a fixed frame connected with the screen body and a first belt wheel rotatably arranged on the fixed frame, the driving part comprises a second belt wheel, and the second belt wheel is connected with the first belt wheel through a transmission belt; a weight portion, the weight portion being adjustably eccentrically connected to the first pulley. When the materials need to be replaced, the weight of the counterweight part can be reduced or increased, so that the overall swinging amount can be changed when the first belt wheel rotates, and the order of magnitude adjustment of the swinging amplitude needed by different materials is realized.

Description

Rotary screen

Technical Field

The invention relates to the technical field of screening treatment, in particular to a rotary screen.

Background

A rotary screen is an apparatus for realizing multi-stage screening of materials (such as feed and grain), and generally comprises a screen body, wherein a plurality of layers of screen meshes are assembled in the screen body. In traditional rotary screen, only can adapt to single product screening, can not satisfy the parameter switching between the different materials and sieve the switching demand, lead to the screening effect to reach the optimum, complete machine adaptability is poor.

Disclosure of Invention

Based on this, it is necessary to provide a rotary screen for the problem that the requirements of parameter switching and screening switching between different materials cannot be met simultaneously.

A rotary screen comprising: a frame; the screen body is suspended on the rack; the driving mechanism comprises a transmission part and a driving part, the transmission part is connected with the screen body so as to drive the screen body to swing relative to the rack, the transmission part comprises a fixed frame connected with the screen body and a first belt wheel rotatably arranged on the fixed frame, the driving part comprises a second belt wheel, and the second belt wheel is connected with the first belt wheel through a transmission belt; a weight portion, the weight portion being adjustably eccentrically connected to the first pulley.

Above-mentioned rotary screen can reduce or increase the weight of counter weight portion when the material needs to be changed to change holistic oscillating quantity when rotary motion is done to first band pulley, realize the order of magnitude regulation of the required swing range of different materials.

In one embodiment, the weight portion includes a primary weight block disposed on at least one side in an axial direction of the first pulley, and the primary weight block is detachably connected to the first pulley.

In one embodiment, the first belt wheel is further provided with an auxiliary balancing weight located outside the main balancing weight, and the auxiliary balancing weight and the corresponding main balancing weight are located on the same side of the first belt wheel and are arranged along the radial direction of the first belt wheel.

In one embodiment, the main weight block and the corresponding auxiliary weight block are connected by a bolt in a radial direction of the first pulley.

In one embodiment, the main balancing weight and the corresponding auxiliary balancing weight are attached together, and the surfaces of the main balancing weight and the corresponding auxiliary balancing weight, which are attached to each other, are both cambered surfaces.

In one embodiment, the counterweight part is arranged on at least one side of the first belt wheel, and comprises a main counterweight block fixed on the first belt wheel and an auxiliary counterweight block detachably connected to the main counterweight block.

In one embodiment, the first pulley is located inside the fixed frame, the screen body comprises an upper screen boat and a lower screen boat, and the upper screen boat and the lower screen boat are arranged on two sides of the fixed frame in the axial direction of the first pulley.

In one embodiment, one side of the screen body is provided with an openable revolving door for shielding a screen mesh assembled in the screen body, and the counterweight part is positioned on one side of the wheel center of the first belt wheel close to the revolving door.

In one embodiment, the upper and lower sieve vessels are arranged inclined with respect to the horizontal direction, and the inclination direction intersects the radial plane of the first pulley.

In one embodiment, the rotary screen comprises a suspension part, the suspension part comprises a suspension body and a suspension rod, the upper end of the suspension body is connected with the upper screen boat, the lower end of the suspension body is connected with the lower screen boat, one end of the suspension rod is connected with the suspension body, and the other end of the suspension rod is movably connected with the frame.

Drawings

Fig. 1 is a schematic structural view of a rotary screen according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of the rotary screen shown in fig. 1.

Fig. 3 is a schematic structural view of a transmission part of the rotary screen shown in fig. 1.

Fig. 4 is a side view of the transmission portion shown in fig. 3.

Fig. 5 is an assembly view of the first pulley and the weight.

Fig. 6 is a side view of the assembly shown in fig. 5.

Fig. 7 is a schematic view of the installation of the first pulley.

Fig. 8 is a schematic view of the installation of the first pulley, with emphasis on the structural components of the two end caps.

Fig. 9 is a schematic structural view of the feeding member.

Fig. 10 is a partial structural view of a feed section of a feed member.

Fig. 11 is a schematic structural view of the distribution section of the feeding member.

FIG. 12 is a schematic diagram of the product channel of the discharge and collection device.

FIG. 13 is a schematic view of the structure of the large hybrid channel and the small hybrid channel mounted on the second fixing plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The embodiment of the invention provides a rotary screen. The rotary screen is also called a rotary grading screen, a rotary combined screen, a combined rotary screen and the like, and is provided with a screen body capable of swinging, wherein at least two layers of screen meshes are arranged in the screen body, and the screen meshes divide the screen body into a plurality of screening areas from top to bottom. The screen body swings in a reciprocating manner so as to drive materials in the screen body to be screened by the screen, and then the screened materials and impurities are discharged from different screening areas. Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the rotary screen of the embodiment of the present invention includes a feed part 1, a frame 2, an electric assembly 3, an upper screen boat 4, a hanging part 5, a transmission part 6, a lower screen boat 7, a lower rotary door 8, an upper rotary door 9, and a discharge collecting device 19. Wherein the upper sieve vessel 4 and the lower sieve vessel 7 constitute a sieve body which can swing together. The screen body is suspended from the frame 2 by a suspension 5. The transmission part 6 is used for driving the screen body to swing back and forth. The electric assembly 3 is used for controlling the whole machine to realize automatic work.

The upper sieve boat 4 and the lower sieve boat 7 have the same structure, and two layers of sieve nets are respectively arranged in the upper sieve boat and the lower sieve boat. As shown in fig. 2, the upper sieve vessel 4 is taken as an example, and the upper sieve vessel 4 is provided with an upper and a lower layer of sieve mesh 41. The upper sieve vessel 4 has a first sieve area formed above the upper sieve screen 41, a second sieve area formed between the two sieve screens, and a third sieve area formed below the lower sieve screen 41. Each screening zone is connected to a different material channel of the discharge and collection device 19. In this embodiment, the first screening area, the second screening area, and the third screening area are configured as a large impurity screening area 1901, a finished product screening area 1902, and a small impurity screening area 1903, respectively. More specifically, in the case of screening pet food, impurities having a particle size larger than that of the finished food are defined as macro-impurities and may be left in the macro-impurity screening zone 1901; finished feed remains in finished product screening area 1902 and impurities having a particle size less than that of the finished feed are defined as small impurities and can enter small impurity screening area 1903. The two layers of screen cloth in the lower sieve boat 7 are arranged in the same way as the two layers of screen cloth in the upper sieve boat 4, and are not described again.

In the embodiments of the present invention, the terms "front end", "rear end", "upper end" and "lower end" are used for convenience of description. Generally, the front end and the upper end refer to the position of a part or element closer to the starting point of the material in the flow direction of the material. Additionally, the term downstream is used, where downstream is relative, referring to the more posterior of the two locations in the direction of flow of the material.

The feeding part 1 and the discharging and collecting device 19 are respectively arranged at the front end and the rear end of the screen body. In order to facilitate the feeding of the screened material and impurities into the corresponding material channels of the discharge and collection device 19 by the screen. In the present embodiment, as shown in fig. 2, the screen 41 is inclined downward with respect to the horizontal direction in the direction from the front end to the rear end, i.e., in the left-right direction. Herein, when referring to an inclination or an inclined direction, a horizontal direction is referred to unless otherwise specified. Specifically, the right end of the screen 41 is inclined downward such that the right end of the screen 41 is lower than the left end of the screen 41 in the vertical direction. The upper sieve vessel 4 and the lower sieve vessel 7 are respectively inclined downwards, and the sieve body formed by the upper sieve vessel and the lower sieve vessel is inclined downwards. When the screen frame reciprocated swing like this, the material after the screening and impurity can also be carried in corresponding material passageway under the effect of gravity, then improve complete machine efficiency. Lower and

upper swing doors

8 and 9 are provided at the front end of the screen body for shielding the screens 41 fitted in the upper and lower sieve boats 4 and 7, respectively. The lower revolving door 8 and the upper revolving door 9 can be opened or closed, and the screen cloth in the corresponding sieve boat can be replaced when the lower revolving door and the upper revolving door are opened.

As shown in fig. 1 and 2, in the present embodiment, the screen body (the upper sieve carrier 4 and the lower sieve carrier 7) is driven to swing back and forth by the driving mechanism. The driving mechanism comprises a transmission part 6 and an external driving part 11, namely the transmission part 6 is powered by the external driving part 11, and then the transmission part 6 drives the upper sieve boat 4 and the lower sieve boat 7 to do swinging motion, so that materials are screened.

As shown in figure 1, the upper sieve boat 4 is arranged above the lower sieve boat 7, a transmission part 6 is arranged between the upper sieve boat 4 and the lower sieve boat 7, and the upper sieve boat 4 and the lower sieve boat 7 are hung on the frame 2 through a hanging part 5. In one example, the suspension part 5 comprises a suspension body 501, the upper end of the suspension body 501 is connected with the upper sieve boat 4, the lower end of the suspension body 501 is connected with the lower sieve boat 7, and a suspension rod 502 is further installed on the suspension body 501, wherein one end of the suspension rod 502 is connected with the suspension body 501, and the other end of the suspension rod 502 is movably connected with the frame 2, so that the suspension rod 502 can swing along with the sieve body. In particular, the other end of the boom 502 may be pivotally connected to the frame 2 or connected to the frame 2 by a flexible member. When specifically setting up, the quantity of the 5 of portion of hanging is 4, 4 the 5 of portion of hanging is located respectively the four corners of screen frame does benefit to the screen frame like this and realizes steady swing.

As shown in fig. 3 to 5, in an embodiment, the transmission part 6 includes a fixed frame 61, wherein the upper sieve boat 4 is installed above the fixed frame 61, the lower sieve boat 7 is installed below the fixed frame 61, and a first pulley 611 is disposed in the fixed frame 61. Namely, the upper sieve boat 4 and the lower sieve boat 7 are respectively arranged at the upper side and the lower side of the fixing frame 61. The driving part 11 includes a transmission motor 1101 and a second pulley 1102, and the transmission motor 1101 provides a driving force to the second pulley 1102. The second pulley 1102 is in driving connection with the first pulley 611 via a transmission belt.

As shown in fig. 5, the weight portion 12 is attached to the first pulley 611 side, and the weight portion 12 is eccentrically disposed with respect to the wheel center of the first pulley 611. In other words, the weight portion 12 is eccentrically connected to the first pulley 611. The transmission motor 1101 during operation drives the second belt pulley 1102 to rotate, the second belt pulley 1102 drives the first belt pulley 611 to rotate, and the first belt pulley 611 swings due to the fact that one side of the first belt pulley is provided with the counterweight 12 and can generate inertia force, so that the upper sieve boat 4 and the lower sieve boat 7 are driven to swing, and materials are screened.

In the present embodiment, the fixing frame 61 of the transmission part 6 and the first pulley 611 are integrated into one part, which is integrally disposed between the upper sieve vessel 4 and the lower sieve vessel 7; before use, the first belt wheel 611 and the second belt wheel 1102 are only required to be in transmission connection through a transmission belt, so that modular design and installation are achieved. The transmission part 6 utilizes the fixed frame 61 to transmit power, and the fixed frame 61 is conveniently connected with the upper sieve boat 4 and the lower sieve boat 7. In particular, the position of the fixing frame 61 connected to the upper and lower sieve boats 4 and 7 is flexible, for example, not limited to the connection at the central position of the upper and lower sieve boats 4 and 7, which facilitates the overall structural arrangement of the rotary sieve. Referring to fig. 2 and 3, in one example, the fixed frame 61 is in the shape of a frame, and is placed between the upper sieve vessel 4 and the lower sieve vessel 7, and can be connected with the upper sieve vessel 4 and the lower sieve vessel 7 by using any suitable position of the fixed frame 61.

On the basis of the inclined arrangement of both the upper and lower sieve vessels 4, 7, the inclination direction of both intersects the radial plane of the first pulley 611. Specifically, as shown in fig. 2, referring to fig. 4 in combination, in the case of the upper sieve vessel 4, the left end of the upper sieve vessel 4 is high and the right end is low, and the radial plane of the first pulley 611 is high at the right end and low at the left end, so that the inclination direction of the upper sieve vessel 4 intersects with the radial plane of the first pulley 611. When the first pulley 611 swings under the action of inertia force, an angle exists between the direction of the swinging force transmitted to the upper sieve vessel 4 and the upper sieve vessel 4, so that the upper sieve vessel 4 bears component forces in different directions, and the upper sieve vessel 4 is more easily swung.

As mentioned in the background, the need for parameter switching and sieve switching between different materials is a pressing issue due to the different swing amplitudes required for different materials. The rotary screen in the traditional technology can not meet the requirements of parameter switching and screening switching among different materials, so that the screening effect cannot reach the optimal value. In this regard, the inventor's research shows that the essential reason is that the screen body of the conventional rotary screen is fixed with a balancing weight, and the vibration amplitude of the screen body is determined by the weight of the balancing weight. The balancing weight is set well according to the inherent characteristics of the customer product before the manufacturer leaves the factory, so that the balancing weight can only adapt to the screening of a single product.

In order to adapt to the swing amplitudes of different materials, in the embodiment of the present invention, the weight 12 is eccentrically connected to the first pulley 611 with adjustable weight. When the swing amplitude of different materials needs to be adapted, the weight of the counterweight part 12 is reduced or increased to change the swing amplitude.

In one embodiment, at least one side of the first pulley 611 is provided with a weight 12. As shown in fig. 5 and 6, the first pulley 611 is provided with the weight portion 12 on both the upper and lower sides in the axial direction. Taking the upper side as an example, the weight portion 12 includes a main weight block 1201 provided to the first pulley 611, and the main weight block 1201 is detachably connected to the first pulley 611. In a specific arrangement, the counterweight 1201 may be connected to the first pulley 611 by a bolt. When the materials need to be replaced, the weight of the main balancing weight 1201 can be reduced or increased, so that the overall swinging amount is changed when the first belt wheel 611 rotates, and the order of magnitude adjustment of the swinging amplitude needed by different materials is realized.

In order to be able to control the weight of the counterweight 12 more precisely, it is at the same time less convenient to adjust the weight of the main counterweight 1201 due to the smaller internal space of the frame 2 of the rotary screen. In an embodiment, as shown in fig. 5 and 6, an easily detachable auxiliary weight block 1202 is further disposed on one side of the main weight block 1201, and the auxiliary weight block 1202 and the main weight block 1201 are arranged along the radial direction of the first pulley 611.

Specifically, the auxiliary weight block 1202 is disposed outside the main weight block 1201 and connected by a bolt 1203 along the radial direction of the first pulley 611. A bolt 1203 passes radially through the auxiliary weight block 1202 and connects with the main weight block 1201. When the material needs to be replaced, the counterweight block 1202 can be detached along the radial direction of the first pulley 611, so that the operation is convenient, and the influence of bearing parts at two ends of the first pulley 611 is avoided; a reduction or increase in the weight of the auxiliary weight block 1202 is achieved, so that the overall amount of oscillation is changed when the first pulley 611 makes a rotational movement. In this embodiment, the outer side of the main weight block 1201 refers to a side of the main weight block 1201 that faces away from the wheel center of the first pulley 611.

More specifically, the auxiliary weight block 1202 is disposed on a side of the main weight block 1201 close to the two revolving doors. When the material needs to be replaced, the upper and/or

lower swing doors

8, 9 can be opened and then adjusted to reduce or increase the weight of the auxiliary weight block 1202. The auxiliary weight block 1202 is connected to the main weight block 1201 by means of radial bolts 1203, so that it is very convenient to adjust the weight of the auxiliary weight block 1202 by means of the upper revolving door 8 and the lower revolving door 9. The screens in the upper and lower sieve boats 4, 7 can also be replaced according to the material characteristics when the upper and/or lower revolving

door

8, 9 is opened. Therefore, the work of adjusting the swing amplitude of the screen body and replacing the screen can be carried out at the same side of the frame 2, and the structural design of the rotary screen is simplified.

Further, in an embodiment, as shown in fig. 5, the main weight block 1201 and the auxiliary weight block 1202 are attached to each other, and both surfaces of the main weight block 1201 and the auxiliary weight block 1202 attached to each other are curved surfaces. That is, the outer side of the main weight 1201 can be made into an arc structure, and the inner side of the auxiliary weight 1202 is made into an arc structure matching with the outer side of the weight 1201 and tightly attached to the outer side. The arc-like structure may hold the auxiliary weight block 1202 against the main weight block 1201 to prevent loosening.

Similarly, the lower side of the first pulley 611 is also provided with the weight 12 described above, in exactly the same manner as the upper side. The counterweight part 12 is arranged on the upper side and the lower side of the first belt wheel 611, so that the weight adjusting range of the counterweight part 12 is enlarged, and the weight change of the counterweight part 12 can be controlled more accurately.

In another embodiment, at least one side of the first pulley 611 is provided with a counterweight portion, and the counterweight 12 includes a main counterweight block 1201 fixedly disposed on the first pulley 611 and an auxiliary counterweight block 1202 detachably connected to the main counterweight block 1201. In this embodiment, the main weight block is fixed, and the weight of the weight portion is adjusted only by adjusting the auxiliary weight block 1202. The structure of the main weight block 1201 and the auxiliary weight block 1202 and the connection manner therebetween are completely the same as those of the previous embodiments, and are not described again.

In one embodiment, the first pulley 611 of the transmission part 6 is installed as follows: as shown in fig. 4, the first pulley 611 is mounted on the fixed frame 61 via the rotary shaft 13, and the upper and lower ends of the rotary shaft 13 are mounted on the fixed frame 61 via the first bearing member 15 and the second bearing member 16, respectively. The first pulley 611 thus rotates the rotary shaft 13 together and generates an inertial force due to the weight 12, which in turn swings the upper sieve vessel 4 and the lower sieve vessel 7 via the fixed frame 61.

The rotary shaft 13 is supported by a first bearing member 15 and a second bearing member 16. It is well known that the bearings inside the bearing components need to be lubricated during operation. Bearing lubrication in the prior art is generally that a hole is respectively formed in a bearing seat, lubricating oil is respectively introduced into the hole, the lubricating oil is introduced into or flows out through the hole, the lubricating oil is poor in fluidity and can only be discharged after being used for a long time, and the lubricating oil at the moment can lose a lubricating effect due to the fact that the lubricating oil is used for a long time. For the rotary screen, the working environment of the bearing is relatively severe, the service life of the bearing is short, and the temperature rise is rapid; by adopting the lubricating mode in the prior art, the lubricating oil is easy to leak and difficult to recover, and the leaked lubricating oil easily pollutes screened materials.

In view of the above problems, embodiments of the present invention provide a reliable bearing lubrication structure, which can effectively lubricate the first bearing component 15 and the second bearing component 16 on both sides of the first pulley 611, so as to greatly improve the service life of the bearing.

As shown in fig. 7, the first bearing member 15 includes a first bearing housing 151, a first bearing 152 mounted to the first bearing housing 151, and a first end cap 153 connected to the first bearing 152. The second bearing member 16 includes a second bearing housing 161, a second bearing 162 mounted to the second bearing housing 161, and a second end cap 163 connected to the second bearing 162. Both ends of the rotating shaft 13 in the axial direction are defined as a first end and a second end, respectively, the first end being an upper end of the rotating shaft 13 and the second end being a lower end of the rotating shaft in fig. 7. The first bearing housing 151 is mounted to a portion of the fixing frame 61 above the first pulley 611, and the second bearing housing 161 is mounted to a portion of the fixing frame 61 below the first pulley 611. The first end of the rotating shaft 13 is supported by the first bearing 152, and a first cavity 154 is formed between the first end and the first end cap 153. The second end of the rotating shaft 13 is supported by the second bearing 162, and a second cavity 164 is formed between the second end and the second end cap 163. Specifically, the first bearing 152 and the second bearing 162 are both self-aligning roller bearings.

A first lubricating oil path is arranged in the first bearing part 15, a second lubricating oil path is arranged in the second bearing part, a hollow oil path 1301 along the axial direction is arranged in the rotating shaft 13, and the hollow oil path 1301 is communicated with the first lubricating oil path and the second lubricating oil path. Through the means, the fluidity of the lubricating oil is better, and the bearings in the bearing parts can be lubricated and discharged periodically, so that the lubricating mode of the bearings is greatly improved, and the service life of the bearings is prolonged.

Specifically, the first lubricating oil path includes a first oil hole 155 provided in the outer ring of the first bearing 152, a first oil nipple 156 provided in the first bearing housing 151 and communicating with the first oil hole 155, and the aforementioned first cavity 154; a hollow oil passage 1301 inside the rotary shaft 13 communicates with the first cavity 154. The second lubricating oil path includes a second oil filler hole 165 provided in the outer ring of the second bearing 162, a second oil nipple 166 provided in the second bearing holder 161 and communicating with the second oil filler hole 165, and the aforementioned second cavity 164; a hollow oil passage 1301 inside the rotary shaft 13 communicates with the second cavity 164.

After the lubricating oil enters the first bearing seat 151 from the first oil nozzle 156, the lubricating oil enters the first bearing 152 through the first oil hole 155 and lubricates the rolling elements therein, at this time, the lubricating oil is continuously introduced, the lubricating oil overflows the first bearing 152 and enters the second bearing 162 from the hollow oil channel 1301 in the rotating shaft 13, and the lubricating oil overflowing again is discharged from the second oil hole 165 to the second oil nozzle 166. Through the means, the fluidity of the lubricating oil is better, and the bearing can be effectively radiated and lubricated.

As shown in fig. 7 and 8, in an embodiment, the first end cap 153 includes a first body 1531, a first annular retainer 1532 connected to the first body 1531, the first annular retainer 1532 abuts against an outer ring of the first bearing 152, an outer circumference of the first annular retainer 1532 is in sealing contact with an inner wall of the first bearing seat 151, and the first body 1531 is connected to an end surface of the first bearing seat 151. By the above means, the first end cover 153 isolates the first cavity 154 from the outside, and the lubricant does not leak from the connection between the first end cover 153 and the first bearing housing 151.

The second end cap 163 includes a second body 1631 and a second annular limiting portion 1632 connected to the second body 1631, the second annular limiting portion 1632 abuts against the outer ring of the second bearing 162, an outer circumference of the second annular limiting portion 1632 is in sealing contact with the second bearing seat 161, and the second body 1631 is connected to an end surface of the second bearing seat 161. By the above means, the second end cap 163 isolates the second cavity 164 from the outside, and the lubricant does not leak from the connection between the second end cap 163 and the second bearing housing 161.

For the rotary screen, it is desirable to be able to spray the material that the feeding component 1 enters to the screen as evenly as possible, so as to ensure that the material is evenly screened when the rotary screen works, improve the screening efficiency, and avoid mixing impurities in the finished feed discharged due to untimely screening. In view of the above requirements, the feeding part 1 of the embodiment of the present invention is configured to have a material homogenizing function, i.e., the feeding part 1 is configured to be a uniform feeding device.

As shown in fig. 1, the feeding member 1 is installed at the left end of an upper sieve vessel 4 and a lower sieve vessel 7. The feeding member 1 includes a feeding section 101 and a distribution section 102. Wherein the feed section 101 has a feed channel through which the material can pass. The distribution section 102 has a distribution shell that communicates with the outlet of the feed section 101 and defines a distribution channel through which material can pass.

Specifically, as shown in fig. 9 and 10, a feed inlet 1015 is provided on the feed section 101, the material enters from the feed inlet 1015, is divided by the dividing section 102 and then enters the screen body, a first refining assembly 1012 and a second refining assembly 1013 are provided in the feed section 101, and the second refining assembly 1013 is located at the downstream of the first refining assembly 1012. The material flowing out of the first refining assembly 1012 passes through the second refining assembly 1013.

First refining subassembly 1012 includes first refining plate 1016, first refining plate 1016 one end is equipped with the first fixed limit 1017 that upwards bends and form, fixed limit 1017 both sides still are equipped with the first material limit 1014 that hinders that bends and form, first fixed limit 1017 is installed in feeding section 101 inboard, get into the back when the material from feed inlet 1015, can fall to first refining plate 1016 on, because the screen frame is under the wobbling state always, the material that falls into can the homodisperse on first refining plate 1016, and can prevent through the setting of first material limit 1014 of hindering that the material from flowing out from first refining plate 1016 both sides and lead to dividing the material inhomogeneous. The provision of the first fixed edge 1017 facilitates the attachment of the first refining plate 1016 to the inside of the feed section 101, although this is only one of many attachment means, and other attachment means may be used for this purpose, such as fasteners to attach the first refining plate 1016 to the feed section 101. In other embodiments, one end of the first refining plate 1016 may be provided without the first fixing rim 1017 formed by bending. At this time, one end of the first refining plate 1016 may be connected to the inside of the feed section 101 by welding.

In order to ensure the material homogenizing effect and compromise the material discharging speed, the first homogenizing plate 1016 is installed obliquely downward from the fixed edge 1017. I.e., the first refining plate 1016 slopes from the fixed edge 1017 towards the outlet of the feed section 101. The blanking channel formed by three sides of the particular first refining plate 1016 (i.e., the fixed side 1017 and the two blocking sides 1014) slopes downward toward the outlet of the infeed section 101. As shown in fig. 9, preferably, under normal use conditions of the rotary screen, the right end of the first refining plate 1016 is lower than the left end of the first refining plate 1016, and the angle between the first refining plate 1016 and the horizontal plane is less than 90 degrees. The blanking channel formed by the three sides of the first refining plate 1016 can make the material flow in a predetermined direction. In use, the first refining plate 1016 may be installed directly into the feed section 101. Therefore, the first material homogenizing plate 1016 has the material homogenizing and conveying functions, the internal structural design of the feeding section 101 does not need to be considered excessively, and the structure of the material homogenizing device is simplified.

The second refining assembly 1013 is structurally identical to the first refining assembly 1012, the second refining assembly 1013 includes a second refining plate 1018, and the second refining plate 1018 is structurally identical to the first refining plate 1016. The discharge channels of the second refining plate 1018 likewise slope downwardly towards the outlet of the feed section 101, the angle of inclination of the second refining plate 1018 relative to the first refining plate 1016 being greater, as necessary to ensure discharge velocity. As shown in fig. 9, preferably, in the normal use state of the rotary screen, the left end of the second refining plate 1018 is lower than the right end of the second refining plate 1018, and the angle formed by the second refining plate 1018 and the horizontal plane is more than 90 degrees.

Further, in order to enhance the wear resistance of the first leveling plate 1016 and the second leveling plate 1018, a first wear plate 1011 is further mounted on the first leveling plate 1016 and the second leveling plate 1018, and it should be understood that the first wear plate 1011 may be made of an existing material, such as polyethylene.

It is to be appreciated that the first refining assembly 1012 and the second refining assembly 1013 may alternatively be provided. When the material refining device is arranged at the same time, the material is firstly dispersed by the first material refining component 1012, and the dispersed material is scattered to the second material refining component 1013 for re-dispersion, so that a good material refining effect is ensured; and the inclination angle of the second refining plate 1018 is larger relative to the first refining plate 1016, so the discharging speed is faster after the second refining, thereby ensuring the refining effect and the discharging speed.

As shown in fig. 9 and 10, a plurality of material guide plates 1021 are further installed downstream of the second refining plate 1018, and the material guide plates 1021 are fixedly installed inside the material distribution section 102. That is, the material guiding plate 1021 is fixedly installed in the material distributing shell of the material distributing section 102.

In one embodiment, the number of the material guiding plates 1021 is 7, and the 7 material guiding plates 1021 are constructed in a tower-shaped structure. Specifically, the upper ends of the 7 material guide plates 1021 converge from the outlet of the feeding section 101 and gradually disperse towards the lower end, the 7 material guide plates 1021 and the two side plates 1022 of the material distributing shell of the material distributing section 102 form eight material distributing channels 1023, and the material distributing channels 1023 are gradually enlarged from top to bottom. The material guide plates 1021 are all located in the range where the discharge port of the feeding section 101 extends downwards, and the arrangement mode of the material guide plates 1021 can enable materials to be uniformly spread in the arrangement direction of the material guide plates 1021, so that the materials can be uniformly spread in the width direction of the sieve ship when being conveyed to the upper sieve ship 4 or the lower sieve ship 7. Wherein, tower column structure can guarantee as far as possible that every divides the material weight that gets into in the passageway 1023 the same, divides the material passageway 1023 lower extreme grow, further disperses the material, has strengthened the refining effect. It is to be understood that the number of the guide plates 1021 is not limited to 7.

As shown in fig. 9 and 11, a material distributing device 103 is further installed downstream of the material guiding plate 1021, the material distributing device 103 is divided into a plurality of material distributing openings 1034 by a plurality of material distributing plates 1031, and the number of the material distributing openings 1034 is the same as that of the material distributing channels 1023 and is communicated with the material distributing channels 1023. Specifically, the discharging directions of the adjacent material distributing openings 1034 are different, so that the number of the material distributing openings 1034 communicated with the large impurity screening areas 1901 of the upper screening boat 4 and the lower screening boat 7 is the same, and the materials falling into the upper screening boat 4 and the lower screening boat 7 are the same. As shown in fig. 11, taking two left-side adjacent distributing openings 1034 as an example, the discharging direction of the first distributing opening 1034 is inclined upward relative to the discharging direction of the second distributing opening, so that the first distributing opening 1034 is suitable for leading to the upper sieve vessel 4, and the second distributing opening 1034 is suitable for leading to the lower sieve vessel 7. In this embodiment, the discharging directions of the adjacent material distributing openings 1034 are opposite, so that the material can be led to the sieve boats in different layers, and the material distributing device is suitable for the material distributing requirement of the rotary sieve with multiple layers of sieve boats. In addition, the plurality of material distribution ports 1034 are arranged along the width direction of the screen body, so that the material entering the screen body covers the whole width of the screen mesh, and the material distribution is more uniform.

It will be appreciated that when there is only one deck of sieve boats, the discharge direction of adjacent ports 1034 may be the same, i.e., the above-described solution of unpowered refining apparatus is equally applicable to a rotary sieve of a single deck of sieve boats.

In one embodiment, the number and positions of the material distributing openings 1034 are 8 corresponding to the number and positions of the material distributing channels 1023, the number of the material distributing openings 1034 entering the upper sieve vessel 4 and the lower sieve vessel 7 is 4, and the material distributing openings 1034 entering the same sieve body are arranged at intervals. Each having 4 feed ports 1034 communicating with the large impurity screening zone 1901 of the upper 4 and lower 7 sieve vessels. The material discharged from the material discharge port 1034 enters the large impurity screening area 1901 of the upper screening boat 4 and the lower screening boat 7.

Further, the lower end of the distributing plate 1031 at both sides of each distributing port 1034 is further provided with a gathering portion 1032 bent inward, and after the material enters the distributing port 1034 from the distributing channel 1023, the material will not escape in the distributing process due to the arrangement of the gathering portion 1032.

For convenient material distribution, an inclined discharge plate 1035 is further arranged in the material distribution port 1034, the discharge plate 1035 is inclined downwards from the upper end, and the inclined direction is consistent with the discharge direction of the material distribution port 1034. The upper end of the discharge plate 1035 refers to the end near the feed section 101. The material flows down under the direction of the discharge plate 1035 and then enters the screen body. Further, to increase the life of the discharge plate 1035, a second wear plate 1033 is mounted to the discharge plate 1035. The second wear plate 1033 may be mounted using any conventional material such as polyethylene.

As shown in fig. 9, a connecting channel 104 is also provided downstream of the feed divider 103. The number of connecting channels 104 is the same as the number of feed ports 1034, and the two are connected in a one-to-one correspondence. Connecting channel 104 is used to communicate feed port 1034 with the front end inlet of large trash screening zone 1901 of the corresponding screening vessel.

In order to intensively treat sundries and materials screened out from the classifying screen, the rear end of the screen body is also provided with a discharging and collecting device 19. The discharge collecting device 19 is arranged on the screen body. Wherein each sieve vessel is provided with a discharge collector 19.

As shown in fig. 2, 12 and 13, the discharging and collecting device 19 includes a first fixing plate 1908 and a second fixing plate 1909 on the opposite side, the first fixing plate 1908 and the second fixing plate 1909 constitute a finished product channel 1904, the second fixing plate 1909 is provided with a large impurity channel 1910 and a small impurity channel 1911, and the second fixing plate 1909 is connected with the screen body. In particular arrangements, the large and

small passageways

1910, 1911 may be hollow square tubes mounted to the second retaining plate 1909. The first fixing plate 1908 and the second fixing plate 1909 are spaced apart from each other to allow the material to pass through. The second fixed plate 1909 is also provided with a product inlet 1905, and the product inlet 1905 communicates with the product channel 1904. The upper end of the large impurity passage 1910 is provided with a large impurity inlet 1916. The upper end of the small impurity passage 1911 is provided with a small impurity inlet 1915.

As described above, the upper sieve vessel 4 and the lower sieve vessel 7 have the same internal structure, and are respectively provided with two layers of sieve meshes to form three material sieving areas, namely, a large impurity sieving area 1901 at the uppermost layer, a finished product sieving area 1902 between the first layer of sieve mesh and the second layer of sieve mesh, and a small impurity sieving area 1903 at the lowermost layer. Taking the above sieve vessel 4 as an example, after the discharge collecting device 19 is installed on the upper sieve vessel 4, the rear end of the large impurity screening area 1901 is connected with the large impurity inlet 1916 of the large impurity channel 1910 of the upper sieve vessel 4, the rear end of the small impurity screening area 1903 is connected with the small impurity inlet 1915 of the small impurity channel 1911, and the rear end of the finished product screening area 1902 is communicated with the finished product inlet 1905 of the finished product channel 1904. When the material is sieved, the sieved material flows to the material channels from the rear end of each sieving area. In particular, the screen 41 is installed to be inclined from the front end to the rear end of the screen body, and the screened material can rapidly flow to each material passage. In the above embodiment, the discharge collecting device 19 includes three material channels, and after the discharge collecting device is mounted on the upper sieve vessel 4, the discharge collecting device can be butted with different sieve areas, so that the assembly can be completed quickly.

In addition, the discharging and collecting device 19 is mounted to the upper sieve boat 4 of the sieve body through the second fixing plate 1909 and moves together with the upper sieve boat 4, so that the three material channels of the discharging and collecting device 19 can be well communicated with the sieving areas, and a good collecting effect is guaranteed.

In addition, the three material channels of the discharge and collection device 19 are connected to the rear outlet of each screening zone, so that the uniformity of the feeding is very important, otherwise the screening is not uniform and different types of materials cannot be collected well. Therefore, in this embodiment, the feeding component 1 adopts the uniform distribution device mentioned in the above embodiment, so that the material is sufficiently screened in each screening zone and then substantially free of impurities with other particle sizes when entering the material channel of the discharging and collecting device 19.

In one embodiment, the large impurity inlet 1916 at the upper end of the large impurity channel 1910 is funnel-shaped, and the large impurity inlet 1916 may cover the rear outlet of the large impurity screening zone 1901. Thereby ensuring that the large trash in large trash screening zone 1901 flows to large trash channel 1910 in its entirety.

As shown in fig. 13, in an embodiment, two small impurity channels 1911 may be provided, and a funnel-shaped small impurity inlet 1915 is provided at the upper end of the small impurity channel 1911, and the two small impurity inlets 1915 may together cover the rear outlet of the small impurity screening zone 1903, so that when the large impurity or the small impurity enters each of the channels, the large impurity or the small impurity may enter the large impurity channel 1910 or the small impurity channel 1911 more easily due to the funnel-shaped inlets.

In one embodiment, as shown in fig. 12, product inlet 1905 is funnel shaped. The product inlet 1905 can cover the back inlet of the product screening zone 1902, thereby ensuring that the large impurities in the large impurity screening zone 1901 all flow to the large impurity channels 1910.

Qualified materials flow into the finished product channel 1904 from the rear end of the finished product screening area 1902, and the finished product channel 1904 is higher in height in the vertical direction, so that the qualified materials are prevented from falling into the finished product channel 1904 and then being broken, and at least one-stage buffer plate is arranged in the finished product channel 1904 along the discharging direction of the finished product channel 1904.

Specifically, as shown in fig. 12, a first buffer plate 1906 is mounted on the second fixing plate 1909, and the first buffer plate 1906 is mounted obliquely downward. A second cushion plate 1912 is further mounted on the first fixed plate 1908 downstream of the first cushion plate 1906, and a third cushion plate 1913 is mounted on the second fixed plate 1909 downstream of the second cushion plate 1912, both the second cushion plate 1912 and the third cushion plate 1913 being disposed obliquely downward. All levels of buffer plates are obliquely arranged towards the discharge port of the finished product channel.

When qualified materials are discharged from the rear end of the finished product screening area 1902, the materials firstly fall on the first buffer plate 1906 and then fall on the second buffer plate 1912 and the third buffer plate 1913, the materials can be guaranteed to fall at a lower height through the arrangement, the falling impact force is reduced, the materials are prevented from being broken, meanwhile, it can be understood that different numbers of buffer plates can be mounted on the first fixing plate 1908 and the second fixing plate 1909, the material screening device is not limited to the three buffer plates in the above embodiments, and the material screening device can be freely arranged according to the height.

In order to prevent the buffer plates from being worn too severely, the third wear-resisting plates 1907 are mounted on the first buffer plate 1906, the second buffer plate 1912 and the third buffer plate 1913, and meanwhile, wear-resisting plates can also be mounted on the fixing plates on the opposite sides of the buffer plates, so that materials are prevented from impacting the fixing plates due to the action of inertia when the materials incline downwards from the fixing plates, and the wear of the fixing plates is prevented from being aggravated.

The lower sieve vessel 7 and the upper sieve vessel 4 are connected to a discharge collecting device 19, and each sieve area of the lower sieve vessel 7 is connected to each channel, so that discharged materials in the lower sieve vessel 7 can be treated in a centralized manner.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A rotary screen, comprising:

a frame;

the screen body is suspended on the rack;

the driving mechanism comprises a transmission part and a driving part, the transmission part is connected with the screen body so as to drive the screen body to swing relative to the rack, the transmission part comprises a fixed frame connected with the screen body and a first belt wheel rotatably arranged on the fixed frame, the driving part comprises a second belt wheel, and the second belt wheel is connected with the first belt wheel through a transmission belt;

a weight portion, the weight portion being adjustably eccentrically connected to the first pulley.

2. The gyratory sieve of claim 1 wherein the counterweight includes a primary weight block disposed on at least one side in an axial direction of the first pulley, the primary weight block being removably connected to the first pulley.

3. The gyratory sieve of claim 2, wherein the first pulley is further provided with an auxiliary weight block located outside the main weight block, and the auxiliary weight block and the corresponding main weight block are located on the same side of the first pulley and are arranged along the radial direction of the first pulley.

4. The gyratory sieve according to claim 3, wherein the primary weight blocks and the corresponding auxiliary weight blocks are connected by bolts in the radial direction of the first pulley.

5. The rotary screen of claim 3, wherein the main weight and the corresponding auxiliary weight are attached to each other, and the surfaces of the main weight and the corresponding auxiliary weight attached to each other are both curved surfaces.

6. The gyratory sieve of claim 1 wherein at least one side of the first pulley is provided with the counterweight, the counterweight including a primary counterweight fixed to the first pulley, and an auxiliary counterweight removably connected to the primary counterweight.

7. The rotary screen of claim 1, wherein the first pulley is located inside the fixed frame, the screen body includes an upper screen boat and a lower screen boat, and the upper screen boat and the lower screen boat are disposed on both sides of the fixed frame in an axial direction of the first pulley.

8. The rotary screen of claim 7, wherein one side of the screen body is provided with an openable rotary door for covering a screen mesh assembled in the screen body, and the counterweight portion is located on one side of the wheel center of the first pulley near the rotary door.

9. The rotary screen of claim 7, wherein the upper and lower screen boats are each disposed at an inclination with respect to a horizontal direction, and the inclination direction intersects a radial plane of the first pulley.

10. The rotary screen of claim 7, wherein the rotary screen includes a hanging portion, the hanging portion including a hanging body and a boom, the hanging body having an upper end connected to the upper screen boat and a lower end connected to the lower screen boat, one end of the boom being connected to the hanging body and the other end being movably connected to the frame.