Novel bar type circular vibrating screen

Abstract

The utility model discloses a novel bar type circular vibrating screen, and relates to the technical field of mine crushing and screening. Comprising a front supporting leg, a rear supporting leg and a motor supporting leg, springs are fixed to the front supporting leg and the rear supporting leg through positioning sleeves, the springs are fixed to a screen frame through the positioning sleeves, a bar screen and a woven screen are fixed in the screen frame through bolts, vibration exciters are fixed to the bottom end of the screen frame through bolts, and the two vibration exciters are connected through a coupler. And the vibration exciter close to one end of the motor supporting leg is connected with an output shaft of the driving motor through flexible connection. According to the utility model, the design structure is reasonable, the loss of transmission energy can be reduced by adjusting the flexible connection structure, the vibration effect can be improved on the basis of the original vibration, the particle screening effect can be improved, the vibration effect can be adjusted, and the mineral substance screening machine is suitable for screening mineral substances in different fields.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine crushing and screening, in particular to a novel rod-type circular vibrating screen. Background Art

[0002] Circular vibrating screens are one of the most important pieces of equipment in the field of mining crushing and screening, primarily used for screening operations. In the current market, circular vibrating screens are primarily used in post-crushing processes to finely screen the crushed material. Screen frames typically come in the form of punched frames, cast screen plates, and woven screens, making them unsuitable for screening raw ore with large impact forces and larger particles. If the raw ore needs to be pre-screened to remove impurities, the ore must be pre-screened by a grizzly feeder to a certain particle size before being conveyed by belt to the circular vibrating screen for ore and slag screening. This process is complex, occupies a significant amount of space, and increases equipment investment, ultimately increasing customer investment costs.

[0003] In the prior art, the screen frame has a large impact force during screening, the screening effect of large particles is poor, the vibration effect cannot be adjusted according to different mineral particles, and especially the particle screening effect cannot be improved when adjusting the vibration effect. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a novel rod-type circular vibrating screen to solve the above problems.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a new type of rod-type circular vibrating screen, including front legs, rear legs and motor legs, springs are fixed on the front legs and the rear legs through positioning sleeves, the springs are fixed to the screen frame through positioning sleeves, rod screens and woven screens are fixed in the screen frame by bolts, a vibrator is fixed to the bottom end of the screen frame by bolts, and the two vibrators are connected by a coupling, and the vibrator near one end of the motor leg is connected to the output shaft of the drive motor through a soft connection.

[0006] Preferably, the rod screen is located above the woven screen, and the angle between the rod screen and the woven screen is 20°~30°.

[0007] Preferably, the number of the front legs and the rear legs is two each, and they are symmetrically distributed on the front and rear sides of the screen frame. The height of the front legs is less than the height of the rear legs, and the height of the motor legs is between the front legs and the rear legs.

[0008] Preferably, the flexible connection is a universal coupling.

[0009] Preferably, the drive motor is fixed above the motor legs by bolts.

[0010] Preferably, the soft connection consists of a first drive wheel, a transmission belt and a second drive wheel, and the first drive wheel is connected to the exciter close to the motor leg, the second drive wheel is connected to the output shaft of the drive motor, and the first drive wheel and the second drive wheel are connected by a transmission belt.

[0011] Preferably, a connecting rod is provided in the middle portion of the transmission belt, and adjusting wheels are fixed to both ends of the connecting rod, and the adjusting wheels overlap the inner wall of the transmission belt.

[0012] Preferably, the side surface of the connecting rod is fixedly connected to the output shaft of the adjusting motor, and the adjusting motor is fixed to the motor leg by bolts, and the driving motor is arranged at the bottom end of the motor leg. Beneficial effects

[0013] The utility model provides a new type of bar-type circular vibrating screen. Compared with the existing technology, it has the following advantages:

[0014] 1. The utility model is mainly used for pre-screening of raw ores with relatively large impact force and relatively large particles, and for screening out slag impurities in the raw ores in advance. The bar-type circular vibrating screen is divided into two layers. The upper bar screen adopts a bar structure and the screen surface adopts an inclination angle of 25°. The lower layer adopts a woven screen with an inclination angle of 30°. The upper bar screen is suitable for screening raw stones with large impact force and large particles, and the lower woven screen is used to screen the slag impurities used in the raw ores, which can achieve the best screening effect.

[0015] 2. The utility model can reduce the loss of transmission energy by adjusting the structure of the soft connection, and at the same time improve the vibration effect on the basis of the original vibration, thereby improving the particle screening effect while adjusting the vibration effect, thereby achieving mineral screening suitable for different sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the right side structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the right side structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the main structure of the soft connection in this utility model.

[0020] Notes on the accompanying drawings: 1. Front support leg; 2. Spring; 3. Screen frame; 4. Motor support leg; 5. Drive motor; 6. Rear support leg; 7. Coupling; 8. Vibrator; 9. Flexible connection; 901. First drive wheel; 902. Connecting rod; 903. Adjusting wheel; 904. Transmission belt; 905. Second drive wheel; 10. Rod screen; 11. Woven screen; 12. Adjusting motor. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The specific implementation of the present invention is described in detail below with reference to specific embodiments. Example 1:

[0023] See also Figure 1 and Figure 2 As shown, a new type of rod-type circular vibrating screen includes a front leg 1, a rear leg 6 and a motor leg 4. Springs 2 are fixed on the front leg 1 and the rear leg 6 through positioning sleeves. The springs 2 are fixed to the screen frame 3 through positioning sleeves. Rod screens 10 and woven screens 11 are fixed to the screen frame 3 by bolts. A vibrator 8 is fixed to the bottom end of the screen frame 3 by bolts, and the two vibrators 8 are connected by a coupling 7. The vibrator 8 near one end of the motor leg 4 is connected to the output shaft of the drive motor 5 through a soft connection 9. The vibrator 8 is driven by the drive motor 5 through the soft connection 9 to vibrate the screen frame 3, and the screening operation can be achieved by vibration.

[0024] Specifically, the rod screen 10 is located above the woven screen 11, and the angle between the rod screen 10 and the woven screen 11 is 20°~30°. The rod screen 10 and the woven screen 11 adopt an angle of 20°~30°, which can avoid the situation where the angle is too large and the screen slides directly without screening, and the angle is too small and the screen continues to be screened without material being discharged and blocked;

[0025] When the rod screen 10 adopts an angle of 25° and the woven screen 11 adopts an angle of 30°, the upper rod screen 10 is more suitable for screening raw stones with large impact force and large particles, and the lower woven screen 11 is used to screen the slag impurities used in the raw ore. The screening speed is moderate at this angle, the effect is better, and it can also effectively avoid clogging.

[0026] When the rod screen 10 adopts an angle of 30° and the woven screen 11 adopts an angle of 30°, the rod screen 10 is more suitable for screening raw stones with large impact force and large particles at a faster speed. The lower woven screen 11 is used to screen the slag impurities used in the raw ore. The screening speed is faster at this angle, but the effect is slightly worse.

[0027] When the rod screen 10 adopts an angle of 20° and the woven screen 11 adopts an angle of 25°, the rod screen 10 is more suitable for raw stones with large impact force and large particles, and the screening speed is relatively slow. The lower woven screen 11 is used to screen the slag impurities used in the raw ore. The screening speed is slow and the effect is not good at this angle, and the speed of the woven screen 11 will also decrease.

[0028] Specifically, the number of the front support legs 1 and the rear support legs 6 are two each, and they are symmetrically distributed on the front and rear sides of the screen frame 3. The height of the front support legs 1 is less than the height of the rear support legs 6, and the height of the motor support legs 4 is between the front support legs 1 and the rear support legs 6.

[0029] Through the above technical solution, the size of the particles in the raw ore can be screened according to the needs, and the screen angles of the rod screen 10 and the woven screen 11 can be adjusted. Adjusting the specified angle is conducive to the rapid flow of materials out of the screen surface, thereby improving the processing capacity of the vibrating screen.

[0030] After the equipment is powered on, the drive motor 5 drives the vibrator 8 to work through the soft connection 9, driving the entire screen frame 3 to move in a circular trajectory. The raw mineral material flows into the rod screen 10 from the upper side of the screen frame 3 above the rear support leg 6 for preliminary screening. The large particle material flows out of the vibrating screen from the top, and the small and medium particle material and slag impurities enter the woven screen 11 for screening. The slag impurities are screened out, and the small and medium particle material flows out from the middle outlet of the vibrating screen. The slag impurities flow out from the bottom of the vibrating screen.

[0031] The upper layer of the circular vibrating screen adopts a bar screen 10 with strong impact resistance, which is suitable for screening large particles in the raw ore; the lower screen frame 3 adopts a woven screen 11 with relatively poor impact resistance, which is more suitable for screening small and medium particles and removing slag impurities. Example 2:

[0032] Further description is given based on the above embodiment 1, referring to Figure 2 As shown, the soft connection 9 adopts a universal coupling, and the drive motor 5 is fixed above the motor support leg 4 by bolts. The vibrator 8 can be driven directly by the drive motor 5 through the universal coupling to work, which can reduce the loss of kinetic energy and improve the vibration effect of the screen frame 3.

[0033] In the above technical solution, the soft connection 9 uses a universal joint to connect the drive motor 5 and the vibrator 8, which can reduce the energy loss between the drive motor 5 and the vibrator 8, thereby improving the drive of the drive motor 5 to the vibrator 8 and improving the vibration effect of the screen frame 3. Example

[0034] Further description is given based on the above embodiment 1, referring to Figure 3 and Figure 4As shown, the flexible connection 9 consists of a first driving wheel 901, a transmission belt 904 and a second driving wheel 905, and the first driving wheel 901 is connected to the exciter 8 close to the motor leg 4, and the second driving wheel 905 is connected to the output shaft of the driving motor 5. The first driving wheel 901 and the second driving wheel 905 are connected by a transmission belt 904, and a connecting rod 902 is set in the middle of the transmission belt 904, and an adjusting wheel 903 is fixed at both ends of the connecting rod 902. The adjusting wheel 903 overlaps the inner wall of the transmission belt 904, and the connecting rod 90 2 side is fixedly connected to the output shaft of the adjusting motor 12, and the adjusting motor 12 is fixed to the motor leg 4 by bolts, and the driving motor 5 is arranged at the bottom end of the motor leg 4. When the adjustable adjusting wheel 903 and the adjusting motor 12 rotate, the transmission belt 904 can be stretched and tightened, and then the screen frame 3 will move downward under the action of the spring 2 above the front leg 1 and the rear leg 6. When the transmission belt 904 is loosened, the screen frame 3 will move upward, and can be used in conjunction with the vibrator 8 to increase the vibration amplitude, improve the vibration effect, and improve the screening effect.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel rod-type circular vibrating screen, comprising a front support leg (1), a rear support leg (6) and a motor support leg (4), wherein a spring (2) is fixed to the front support leg (1) and the rear support leg (6) via a positioning sleeve, and the spring (2) is fixed to the screen frame (3) via the positioning sleeve, and is characterized in that: A rod screen (10) and a woven screen (11) are fixed to the screen frame (3) by bolts, a vibrator (8) is fixed to the bottom end of the screen frame (3) by bolts, and the two vibrators (8) are connected by a coupling (7), and the vibrator (8) near one end of the motor leg (4) is connected to the output shaft of the drive motor (5) by a flexible connection (9).

2. The novel rod-type circular vibrating screen according to claim 1 is characterized in that: The rod screen (10) is located above the woven screen (11), and the angle between the rod screen (10) and the woven screen (11) is 20° to 30°.

3. The novel rod-type circular vibrating screen according to claim 2 is characterized in that: The number of the front legs (1) and the rear legs (6) is two each, and they are symmetrically distributed on the front and rear sides of the screen frame (3); the height of the front legs (1) is less than the height of the rear legs (6), and the height of the motor legs (4) is between the front legs (1) and the rear legs (6).

4. The novel rod-type circular vibrating screen according to claim 3 is characterized in that: The soft connection (9) is a universal coupling.

5. The novel rod-type circular vibrating screen according to claim 4 is characterized in that: The drive motor (5) is fixed above the motor support leg (4) by means of bolts.

6. The novel rod-type circular vibrating screen according to claim 3 is characterized in that: The flexible connection (9) is composed of a first driving wheel (901), a transmission belt (904) and a second driving wheel (905), wherein the first driving wheel (901) is connected to the exciter (8) close to the motor leg (4), the second driving wheel (905) is connected to the output shaft of the driving motor (5), and the first driving wheel (901) and the second driving wheel (905) are connected via the transmission belt (904).

7. The novel rod-type circular vibrating screen according to claim 6 is characterized in that: A connecting rod (902) is provided in the middle of the transmission belt (904), and adjusting wheels (903) are fixed to both ends of the connecting rod (902), and the adjusting wheels (903) overlap the inner wall of the transmission belt (904).

8. The novel rod-type circular vibrating screen according to claim 7 is characterized in that: The side of the connecting rod (902) is fixedly connected to the output shaft of the adjustment motor (12), and the adjustment motor (12) is fixed to the motor leg (4) by bolts, and the drive motor (5) is arranged at the bottom end of the motor leg (4).

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