阅读说明：本技术 一种高精度方型摇摆筛 (High-precision square swing screen ) 是由 郑全发 于 2019-12-05 设计创作，主要内容包括：本发明公开了一种高精度方型摇摆筛,属于筛分技术领域,包括支架机构、筛箱机构和摇摆机构,筛箱机构安装在支架机构上并在支架机构内摇摆；所述摇摆机构,包括激振组件和/或弹性限位组件；激振组件安装在筛箱机构的筛箱靠近进料口处；弹性限位组件安装在筛箱靠近出料口处。本发明中改变了原有方型摇摆激振器均在接近中间重心线的位置的传统方式,能够使得物料在筛网上前部作圆形运动,有利于筛网上的物料快速分散。而运行到中部则渐变至椭圆形运动,甚至末端再渐变至近似直线往复运动,彻底改变了目前方型摇摆筛的弊病,即使是与筛网孔径相近的物料颗粒也能被筛分出来,极大程度地提高筛分精度和筛分效率。(The invention discloses a high-precision square swing screen, which belongs to the technical field of screening and comprises a bracket mechanism, a screen box mechanism and a swing mechanism, wherein the screen box mechanism is arranged on the bracket mechanism and swings in the bracket mechanism; the swing mechanism comprises a vibration excitation component and/or an elastic limiting component; the vibration excitation component is arranged at a position, close to the feeding port, of a screen box of the screen box mechanism; the elastic limiting assembly is arranged at the position, close to the discharge port, of the screen box. The invention changes the traditional mode that the original square swinging vibration exciters are all positioned close to the center gravity line, can make the materials do circular motion on the front part of the screen, and is beneficial to the rapid dispersion of the materials on the screen. The material is gradually changed to elliptical motion when the material is moved to the middle part, even the tail end is gradually changed to approximate linear reciprocating motion, the defects of the existing square swing sieve are thoroughly changed, even material particles with the aperture close to that of the sieve mesh can be sieved, and the sieving precision and the sieving efficiency are greatly improved.)

1. A high-precision square swing screen comprises a support mechanism, a screen box mechanism and a swing mechanism, wherein the screen box mechanism is arranged on the support mechanism and swings in the support mechanism; the method is characterized in that: the swing mechanism comprises a vibration excitation component and/or an elastic limiting component; the vibration exciting assembly is arranged at a position, close to the feeding port, of a screen box (21) of the screen box mechanism; the elastic limiting component is arranged at the position, close to the discharge port, of the screen box (21).

2. The high accuracy square shaker of claim 1, wherein: the excitation assembly comprises a motor (31), an exciter (32) and an exciter fixing seat (33); vibration exciter fixing base (33) are installed at sieve case (21) front end, and vibration exciter (32) are installed on vibration exciter fixing base (33), and vibration exciter (32) are connected with motor (31) transmission through the belt, and motor (31) are installed on sieve case (21) lateral wall.

3. The high accuracy square shaker of claim 2, wherein: a clump weight is detachably arranged on the vibration exciter (32).

4. A high accuracy square type rocking screen according to claim 1, 2 or 3, wherein: the elastic limiting assembly comprises a limiting balance plate (34) and an elastic limiting piece (35); one end of the limiting balance plate (34) is fixed on a bracket (11) of the bracket mechanism; the other end of the limiting balance plate (34) is symmetrically provided with an elastic limiting piece (35); the outer side of the elastic limiting piece (35) is connected with the bottom of the screen box (21).

5. The high accuracy square shaker of claim 4, wherein: the outer side of the elastic limiting piece (35) is connected with the bottom of the screen box (21) through an auxiliary fixing plate.

6. The high accuracy square shaker of claim 4, wherein: the elastic limiting piece (35) is a steel elastic body or a rubber elastic body.

7. The high accuracy square shaker of claim 1, wherein: the screen box mechanism comprises a screen box (21), a plurality of screen meshes, a feed port (22) and a discharge port (23); the feed inlet (22) and the discharge outlet (23) are respectively arranged at two opposite ends of the screen box (21), and a plurality of groups of screens are arranged in the screen box (21).

8. The high accuracy square shaker of claim 1, wherein: the support mechanism comprises a support (11), a cantilever (12), a universal joint (13) and a plurality of support tubes (14); each support pipe (14) is fixed at the bottom of the screen box (21), two ends of each support pipe (14) are connected with the lower end of one cantilever (12) through one universal joint (13), and the upper end of the cantilever (12) is connected with the support (11) through the universal joint (13).

9. A screening method of a high-precision square swing screen is characterized by comprising the following steps: the method comprises the steps that a motor (31) is started, the motor (31) drives a vibration exciter (32) to work through a belt, the vibration exciter (32) drives a screen box (21) to swing in a support (11), materials in the front of the screen box (21) move towards the rear of the screen box (21) in a spiral motion and are screened, and the track of the spiral motion gradually changes from circular motion to elliptical motion; under the action of the elastic limiting assembly, the materials reach the rear part of the screen box (21) and then are gradually changed from elliptical motion to approximately linear reciprocating motion to realize screening.

Technical Field

The invention belongs to the field of screening machinery, and particularly relates to a high-precision square swing screen.

Background

The square swing sieve is one of the most common devices in the field of sieving machinery, and is widely applied to various industries. The vibration exciter of the existing square swing screen is arranged in the middle of the swing screen at the bottom of the screen box, when the square swing screen is used for screening, materials in the swing screen move on the screen mesh in a spiral line similar to the spiral line moving to the discharge port end at equal pitch, and the screening movement mode has good screening effect, but is difficult to screen out material particles close to the mesh opening of the screen mesh.

Disclosure of Invention

The invention aims to solve the technical problem that the existing swing sieve cannot sieve materials with the particle size similar to the aperture of a screen mesh, so that the invention provides a high-precision square swing sieve.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a high-precision square swing screen comprises a support mechanism, a screen box mechanism and a swing mechanism, wherein the screen box mechanism is arranged on the support mechanism and swings in the support mechanism; the swing mechanism comprises a vibration excitation component and/or an elastic limiting component; the vibration excitation component is arranged at a position, close to the feeding port, of a screen box of the screen box mechanism; the elastic limiting assembly is arranged at the position, close to the discharge port, of the screen box.

As a preferred scheme of the present invention, the excitation assembly includes a motor, a vibration exciter, and a vibration exciter fixing base; the vibration exciter fixing seat is installed at sieve bottom of the case portion front end, and the vibration exciter is installed on the vibration exciter fixing seat, and the vibration exciter passes through the belt and is connected with motor drive, and the motor is installed on the sieve case lateral wall that is close to the vibration exciter. The motor transmits power to the vibration exciter through the belt, and the vibration exciter drives the screen box to enable the screen box to swing in the support. The vibration exciter is arranged at the front end of the screen box, so that the swinging amplitude of the screen box is gradually reduced until the screen box linearly reciprocates, the traditional movement track of materials in the screen box is changed, the particle size is similar to the aperture of a screen mesh, and material particles can be screened out, and the screening precision and the screening efficiency are greatly improved.

As a preferred scheme of the invention, a balancing weight is detachably arranged on the vibration exciter.

As a preferred scheme of the present invention, the elastic limiting assembly includes a limiting balance plate and an elastic limiting member; one end of the limiting balance plate is fixed on the bracket of the bracket mechanism; the other end of the limiting balance plate is symmetrically provided with elastic limiting parts; the outside and the sieve bottom of sieve case of elasticity locating part are connected. The limiting balance plate is located at one end of the discharge port and is matched with a steel elastomer or a rubber elastomer, and the limiting balance plate is generally arranged at the middle position, can play a role in supporting the elastic limiting part and enables the rear part of the screen box to be stressed uniformly. The elastic limiting piece limits the swing of the screen box, and the screen box has a swing trend, so the screen box can only swing in a small amplitude or even can not swing under the action of the elastic limiting piece and can only approximately do linear reciprocating motion, and the screening precision and the screening efficiency are improved.

As a preferable aspect of the present invention, the outer side of the elastic limiting member is connected to the bottom of the screen box through an auxiliary fixing plate, and the structure of the auxiliary fixing plate is not limited as long as the elastic limiting member can be fixedly connected to the bottom of the screen box.

In a preferred embodiment of the present invention, the elastic stopper is a steel elastic body or a rubber elastic body.

As a preferred scheme of the invention, the screen box mechanism comprises a screen box, a plurality of screens, a feeding port and a discharging port; the feed inlet and the discharge outlet are respectively arranged at two opposite ends of the screen box, and a plurality of groups of screen meshes are arranged in the screen box.

As a preferred scheme of the present invention, the support mechanism includes a support, a cantilever, a gimbal and a plurality of support tubes; each support tube is fixed at the bottom of the screen box, two ends of each support tube are connected with the lower end of one cantilever through a universal joint, and the upper end of each cantilever is connected with the support through the universal joint.

A screening method of a high-precision square swing screen comprises the steps that a motor is started, the motor drives a vibration exciter to work through a belt, the vibration exciter drives a screen box to swing in a support, the vibration exciter is located at the front of the screen box, so that materials at the front of the screen box move towards the rear of the screen box in a spiral motion mode, screening is achieved in the moving process, and the track of the spiral motion is changed from a circular motion track to an elliptical motion track in a gradual changing mode; under the action of the elastic limiting assembly, the materials are gradually changed from elliptical motion tracks to approximately linear reciprocating motion after reaching the rear part of the screen box, so that screening is realized.

The invention has the beneficial effects that:

the invention overcomes the defect that the front and back movement tracks of the material screen of the existing square swing screen are basically consistent, mainly changes the installation position of the vibration excitation component, and can be additionally provided with the elastic limit component when necessary. The vibration exciter is arranged at one end of the sieve box, which is forward in gravity center, namely a certain position deviated to the feed inlet, and the elastic limiting assembly can be additionally arranged at the other end of the sieve box and is arranged at the rear part of the sieve box, which is close to the discharge outlet, so that the motion trail of materials in sieving is changed, the motion trail of each section of materials in front of, middle of and behind the sieve is changed, and the aim of a more reasonable sieving mode is fulfilled. The motion trail of the original square swing screen material is a spiral line with approximate equal pitch, the screening motion trail is single, and some materials which should pass through the screen mesh are difficult to pass through the screen all the time. The invention changes the traditional mode that the original square swinging vibration exciters are all positioned close to the center gravity line, can enable the materials to do circular motion on the front part of the screen, and is beneficial to the rapid dispersion of the materials on the screen. The material is gradually changed to elliptical motion when the material is moved to the middle part, even the tail end is gradually changed to approximate linear reciprocating motion, the defects of the existing square swing sieve are thoroughly changed, even material particles with the aperture close to that of the sieve mesh can be sieved, and the sieving precision and the sieving efficiency are greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a front view of the present invention.

In the figure: 11-a scaffold; 12-a cantilever; 13-a universal joint; 14-hosting; 21-a sieve box; 22-a feed inlet; 23-a discharge hole; 31-a motor; 32-a vibration exciter; 33-a vibration exciter fixing seat; 34-a limit balancing plate; 35-elastic limit piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.