Flexible rotary vibration screen

Abstract

The utility model provides a flexible rotary vibration screen which effectively solves the technical problems that in the prior art, in the using process of a vertical supporting spring, a vibrating body and a frame body of a screening machine vibrate for a long time, so that metal is subjected to fatigue vibration cracking, and in the prior art, the sealing effect of a sealing ring is poor. According to the technical scheme, the flexible rotary vibrating screen comprises a supporting bottom frame and a vibrating body arranged above the supporting bottom frame, a plurality of supporting springs which surround the supporting bottom frame by a circle and are arranged at intervals are connected between the supporting bottom frame and the vibrating body, and the upper ends of the supporting springs are obliquely arranged inwards. A vibration motor is installed at the lower end of the vibration body, and a motor sealing cover covering the vibration motor is further fixed to the vibration body.

Description

Technical Field

[0001] The utility model relates to vibration screening and grading equipment, in particular to a flexible rotary vibration screen. Background Art

[0002] When the traditional rotary vibrating screen is used for screening, the main principle is to vibrate through the vibration motor, and then transmit the amplitude to the upper part of the screen through the spring to drive the screen mesh frame to achieve the screening effect. The support springs of the rotary vibrating screen in the prior art are all set vertically. For example, patent No. ZL201921478578.2 discloses a gas-protected rotary vibrating screen structure. The support spring between the support base and the vibrating body is set vertically. The force generated by the vertically set spring structure is a vertical vibration force. During use, the up and down vibration force generated by the vibration motor cannot be fully released, so that the vibrating body and frame of the screen machine will vibrate for a long time, resulting in metal fatigue cracking.

[0003] Flexible rotary vibrating screen can alleviate this problem well, thus increasing the service life of the screen.

[0004] Patent No. ZL201611100801.0 discloses a sealing structure of a rotary vibrating screen frame and a mesh frame, as shown in the document Figure 1 As shown, the edges of the upper screen frame 1 and the lower screen frame 3 extend outward along the entire circumferential direction, are recessed, and then extend to form a curved sealing surface 6. Further, the cross-sectional shape of the edges of the upper screen frame and the lower screen frame is Ω-shaped, the mesh frame 2 is placed between the upper and lower screen frames 3 and sealed with a sealing ring 4, the sealing ring 4 is placed in the curved sealing surface 6, the boss on the sealing ring falls into the recess of the curved sealing surface, the concave and convex cooperate to surround and squeeze, the clamp ring 5 is clamped on the screen frame with a curved sealing surface, and the upper and lower screen frames are firmly squeezed on the sealing ring. This upper and lower screen frames with curved sealing surfaces can well ensure that the material does not leak during the use of the screen machine, the frame does not deform, and the clamp ring is firm. The curved sealing surface 6 is a circular ring rib, thereby improving the strength of the screen frame. Thereby improving the radial strength of the upper screen frame 1 and the lower screen frame 3. Compared with the traditional U-shaped design, the design of this sealing ring adds upper and lower bosses on the upper and lower walls of the U-shaped sealing ring, which can ensure that the material does not leak and the sealing ring does not shift to a certain extent. However, the material still easily leaks between the mesh frame and the vertical side wall of the upper screen frame, causing material accumulation. Utility Model Content

[0005] In order to solve the defects of the prior art, the utility model provides a flexible rotary vibrating screen, which effectively solves the technical problem that the vibrating body and frame of the screen machine will vibrate for a long time during the use of the vertical support spring described in the background technology, thereby causing metal fatigue cracking, and the technical problem that the sealing effect of the sealing ring in the background technology is not good.

[0006] The technical solution is a flexible rotary vibrating screen, including a supporting base and a vibrating body placed above the supporting base, a plurality of supporting springs arranged around a circle and at intervals are connected between the supporting base and the vibrating body, and the upper ends of the supporting springs are inclined inwards.

[0007] Preferably, the inclination angle of the support spring relative to the horizontal line is 65°-75°.

[0008] Preferably, inclined fixing blocks are fixed to the upper and lower ends of the support spring, respectively, and the inclined fixing blocks at the upper and lower ends of the support spring are respectively fixed to the vibrating body and the support base.

[0009] Preferably, a protrusion extending toward the inside of the spring is fixed on the inclined fixing block.

[0010] Preferably, a vibration motor is installed at the lower end of the vibration body, and a motor sealing cover covering the vibration motor is also fixed on the vibration body.

[0011] Preferably, the vibrating body is provided with an upper screen frame and a lower screen frame which cooperate with each other, the upper screen frame includes a vertical upper annular wall, an upper horizontal wall horizontally extending outward from the upper annular wall, a vertical upper vertical wall extending downward from the upper horizontal wall, and an upper horizontal sealing surface extending outward from the upper vertical wall; the lower screen frame includes a vertical lower annular wall and a lower sealing surface extending outward from the lower annular wall; a sealing strip is arranged between the upper sealing surface and the lower sealing surface; the sealing strip includes a U-shaped portion annularly placed between the upper and lower sealing surfaces and opening inward, a vertical portion of the U-shaped portion extending upward to fit the upper vertical wall, and a horizontal portion of the vertical portion extending inward to fit the upper horizontal wall.

[0012] Preferably, a plurality of annular protrusions are arranged at intervals on the upper side surface of the horizontal portion of the sealing strip.

[0013] Preferably, the cross section of the protrusion is semicircular.

[0014] The beneficial effects of the utility model are:

[0015] 1. By setting the inclined support spring, the vibrating screen machine not only has the appropriate up and down amplitude, but also has the appropriate left and right amplitude. Since the support spring is installed with a circular tilt, the kinetic energy of the vibration can be fully utilized. The corresponding springs of the entire circumference will also produce a pulling force and reverse thrust in the inclined direction, so that the vibration force can be well offset and the destructive force of the equipment can be reduced. It not only improves the screening efficiency, but also greatly extends the service life of the screen machine and reduces the production cost of the user enterprise.

[0016] 2. Wrapping the vibration motor with a motor sealing cover can prevent dust from forming on the vibration motor, reduce the failure rate of the motor, and extend the service life of the motor.

[0017] 3. The shape of the sealing strip of the utility model not only makes it difficult for the sealing strip to shift, but also ensures that no material will accumulate between the sealing strip and the side wall of the upper vibrating screen, thereby enhancing the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 For this utility model Figure 1 Enlarged view of part A.

[0020] Description of the drawings: supporting frame 1, vibrating body 2, supporting spring 3, inclined fixed block 4, protrusion 5, vibration motor 6, motor sealing cover 7, upper screen frame 8, upper annular wall 801, upper horizontal wall 802, upper vertical wall 803, upper sealing surface 804, lower screen frame 9, lower annular wall 901, lower sealing surface 902, sealing strip 10, U-shaped portion 1001, vertical portion 1002, horizontal portion 1003, and protrusion 1004. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is further described below according to the accompanying drawings.

[0022] The utility model is provided with a plurality of circumferentially uniformly distributed inclined inclined fixing blocks 4 on a support base frame 1 and a vibrating body 2, an inclined support spring 3 is connected between two upper and lower opposite inclined fixing blocks 4, the upper portion of the support spring 3 is inclined inwardly, and the inclination angle relative to the horizontal plane is between 65° and 75°, a protrusion 5 extending toward the inside of the spring is fixed on the inclined fixing block 4, and there is a gap between the two opposite protrusions 5, and the protrusion 5 provides radial support to the spring during the vibration of the spring, so that the vibration is more stable.

[0023] The vibration motor 6 is covered with a motor sealing cover 7 fixed on the vibration body 2, and the upper part of the motor sealing cover 7 is fixed on the vibration body 2 through a plurality of bolts.

[0024] The sealing strip of the utility model is arranged between the upper screen frame 8 and the lower screen frame 9. Its structure not only makes the sealing strip difficult to shift, but also ensures that materials will not accumulate between the strip and the screen frame, and between the strip and the screen frame. The setting of the convex point further ensures the sealing between the strip and the screen frame.

[0025] The upper and lower screen frames are fastened together by a clamping ring.

Claims

1. A flexible rotary vibrating screen, comprising a supporting frame (1) and a vibrating body (2) disposed above the supporting frame (1), characterized in that: A plurality of support springs (3) arranged around a circle and at intervals are connected between the support base frame (1) and the vibrating body (2), and the upper ends of the support springs (3) are arranged to tilt inwards.

2. A flexible rotary vibrating screen according to claim 1, characterized in that: The inclination angle of the support spring (3) relative to the horizontal line is 65°-75°.

3. A flexible rotary vibrating screen according to claim 1, characterized in that: The upper and lower ends of the support spring (3) are respectively fixed with inclined fixing blocks (4), and the inclined fixing blocks (4) at the upper and lower ends of the support spring (3) are respectively fixed on the vibrating body (2) and the supporting base frame (1).

4. A flexible rotary vibrating screen according to claim 3, characterized in that: A protrusion (5) extending toward the inside of the spring is fixed on the inclined fixing block (4).

5. A flexible rotary vibrating screen according to claim 1, characterized in that: A vibration motor (6) is installed at the lower end of the vibration body (2), and a motor sealing cover (7) covering the vibration motor (6) is also fixed on the vibration body (2).

6. A flexible rotary vibrating screen according to claim 1, characterized in that: The vibrating body (2) is provided with an upper screen frame (8) and a lower screen frame (9) which cooperate with each other. The upper screen frame (8) comprises a vertical upper annular wall (801), an upper horizontal wall (802) extending outward from the lower end of the upper annular wall (801) and arranged horizontally, an upper vertical wall (803) extending downward from the upper horizontal wall (802) and an upper sealing surface (804) extending outward from the upper vertical wall (803) and arranged horizontally. The lower screen frame (9) comprises a vertical lower annular wall (901) and a lower annular wall (902). 01) has a lower sealing surface (902) extending outward from the upper end, a sealing strip (10) is arranged between the upper sealing surface (804) and the lower sealing surface (902), and the sealing strip (10) comprises a U-shaped portion (1001) annularly disposed between the upper and lower sealing surfaces (902) and opening inward, a vertical portion (1002) extending upward from the U-shaped portion (1001) and abutting against the upper vertical wall (803), and a horizontal portion (1003) extending inward from the vertical portion (1002) and abutting against the upper horizontal wall (802).

7. A flexible rotary vibrating screen according to claim 6, characterized in that: A plurality of annular protrusions (1004) are arranged at intervals on the upper side surface of the horizontal portion (1003) of the sealing strip (10).

8. A flexible rotary vibrating screen according to claim 7, characterized in that: The cross section of the protrusion (1004) is semicircular.

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