Dry-mixed mortar circular vibrating screen with good screening effect

Abstract

The utility model provides a round vibrating screen for dry-mixed mortar with a good screening effect, and relates to the field of round vibrating screens, the round vibrating screen comprises a base, a supporting assembly, a screening assembly, a vibration excitation assembly and a driving assembly, the screening assembly comprises a screening box, a screen mesh is arranged in the screening box, the vibration excitation assembly comprises a rotating shaft, the rotating shaft penetrates through the screening box, and the supporting assembly is arranged on the base. An amplitude adjusting mechanism is mounted on the surface of the rotating shaft and comprises a connecting ring fixedly arranged on the surface of the rotating shaft in a sleeving manner; according to the vibration amplitude adjusting mechanism, when the vibration amplitude of the screen box needs to be adjusted, the hexagonal head can be rotated through a hexagonal wrench, the threaded rod is driven to rotate through the hexagonal head, and due to the fact that the threaded rod is in threaded connection with the connecting sleeve, the vibration amplitude of the screen box can be adjusted along with rotation of the threaded rod. The distance between the balancing weight, the eccentric block and the connecting ring can be changed, then the distance of the gravity center deviating from the axis of the rotating shaft is changed, and the vibration amplitude of the screen box is adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of circular vibrating screens, in particular to a circular vibrating screen for dry-mixed mortar with good screening effect. Background Art

[0002] Dry-mix masonry mortar is a special improved dry-mix mortar designed and produced using high-quality polymers. It is an improved cement-based dry powder material made of high-quality Shijing cement, selected fine aggregate and polymer additives in a reasonable proportion. It can be used after adding water on the construction site and mixing it mechanically as required.

[0003] During the preparation of dry-mixed mortar, a circular vibrating screen is required to screen the aggregate. The circular vibrating screen is a new type of vibrating screen with circular vibration, multiple layers and high efficiency. The circular vibrating screen adopts a cylindrical eccentric shaft vibrator and an eccentric block to adjust the amplitude. The material screening line is long and the screening specifications are diverse. It has the characteristics of reliable structure, strong excitation force, high screening efficiency, low vibration noise, durability, easy maintenance, and safe use. However, during the use of the existing circular vibrating screen, the amplitude needs to be adjusted according to the feeding speed of the mortar aggregate. However, the amplitude adjustment method of the existing vibrating screen is often achieved by increasing or decreasing the weight of the eccentric block. This method is relatively cumbersome and requires repeated disassembly and assembly of the eccentric block, which is inefficient.

[0004] In summary, the utility model provides a circular vibrating screen for dry-mixed mortar with good screening effect to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a circular vibrating screen for dry-mixed mortar with good screening effect, which is achieved by the following specific technical means:

[0006] A circular vibrating screen for dry-mixed mortar with good screening effect comprises a base, a supporting assembly, a screening assembly, an exciting assembly and a driving assembly, the screening assembly comprises a screen box, a screen is arranged inside the screen box, the exciting assembly comprises a rotating shaft, the rotating shaft passes through the screen box, and an amplitude adjustment mechanism is installed on the surface of the rotating shaft, the amplitude adjustment mechanism comprises a connecting ring fixedly sleeved on the surface of the rotating shaft, two connecting frames are symmetrically arranged on the side surface of the connecting ring, the ends of the two connecting frames away from the connecting ring are welded with connecting sleeves, a threaded rod and a sliding rod are respectively installed on the inner sides of the two connecting sleeves, a counterweight block is connected to the same end of the threaded rod and the sliding rod, an eccentric block is connected to the other end of the threaded rod and the sliding rod, the threaded rod and the counterweight block and the eccentric block are all rotatably connected, and the sliding rod and the counterweight block and the eccentric block are all fixedly connected.

[0007] Furthermore, the threaded rod is threadedly connected to the connecting sleeve, and the sliding rod is slidably connected to the connecting sleeve.

[0008] Furthermore, the amplitude adjustment mechanism also includes a hexagonal head installed on a side of the counterweight block away from the connecting ring, and the hexagonal head is transmission-connected to the threaded rod.

[0009] Furthermore, there are two amplitude adjustment mechanisms, and the two amplitude adjustment mechanisms are symmetrically distributed on both sides of the screen box.

[0010] Furthermore, the support assembly includes a column fixedly installed on the top of the base, a support spring is installed on the top of the column, a connecting seat is fixedly connected to the top of the support spring, and the connecting seat is fixedly connected to the screen box.

[0011] Furthermore, the number of the support assemblies is two pairs, with a total of four, and the four support assemblies are respectively arranged on both sides of the two ends of the screen box.

[0012] Furthermore, the height of the columns in one pair of the support assemblies is greater than the height of the columns in another pair of the support assemblies.

[0013] Furthermore, the driving assembly includes a support frame fixedly arranged on the top of the base, a motor is fixedly installed on the top of the support frame, and the output end of the motor is connected to the rotating shaft through a flexible coupling.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides an amplitude adjustment mechanism. When the vibration amplitude of the screen box needs to be adjusted, the hexagonal head in the utility model can be rotated by a hexagonal wrench, and the threaded rod can be driven to rotate by the hexagonal head. Since the threaded rod and the connecting sleeve are threadedly connected, the distance between the counterweight block, the eccentric block and the connecting ring can be changed as the threaded rod rotates, thereby changing the distance that the center of gravity deviates from the axis of the rotating shaft, thereby realizing the adjustment of the vibration amplitude of the screen box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model as a whole;

[0017] Figure 2 It is a three-dimensional schematic diagram of the screening component in the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the drive assembly in the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the support assembly in the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the vibration exciting component in the utility model.

[0021] In the figure:

[0022] 1. Base; 2. Support assembly; 201. Post; 202. Support spring; 203. Connecting seat; 3. Screening assembly; 301. Screen box; 302. Screen; 4. Excitation assembly; 401. Rotating shaft; 402. Amplitude adjustment mechanism; 403. Connecting ring; 404. Connecting frame; 405. Connecting sleeve; 406. Threaded rod; 407. Sliding rod; 408. Counterweight; 409. Eccentric block; 410. Hexagonal head; 5. Driving assembly; 501. Support frame; 502. Motor; 503. Flexible coupling. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] like Figure 1-5 As shown, the utility model provides a circular vibrating screen for dry-mixed mortar with good screening effect, including a base 1, a supporting assembly 2, a screening assembly 3, an exciting assembly 4 and a driving assembly 5, the screening assembly 3 includes a screen box 301, a screen 302 is arranged inside the screen box 301, the screen 302 can be one layer or multiple layers according to needs, when the number of screens 302 is multiple layers, the mesh size of the screen 302 located at the top is larger than the mesh size of the screen 302 located at the bottom, the exciting assembly 4 includes a rotating shaft 401, the rotating shaft 401 passes through the screen box 301, and an amplitude adjustment mechanism 402 is installed on the surface of the rotating shaft 401, the amplitude adjustment mechanism 402 includes a connecting ring 403 fixedly sleeved on the surface of the rotating shaft 401, and two connecting frames 40 are symmetrically arranged on the side surface of the connecting ring 403 4. The ends of the two connecting frames 404 away from the connecting ring 403 are welded with connecting sleeves 405. The inner sides of the two connecting sleeves 405 are respectively installed with threaded rods 406 and sliding rods 407. The surface of the sliding rod 407 is provided with scale marks to facilitate the adjustment of the deflection distance of the eccentric block 409. The same end of the threaded rod 406 and the sliding rod 407 is commonly connected with a counterweight block 408. The other ends of the threaded rod 406 and the sliding rod 407 are commonly connected with an eccentric block 409. The threaded rod 406 and the counterweight block 408 and the eccentric block 409 are all rotatably connected. The sliding rod 407 and the counterweight block 408 and the eccentric block 409 are all fixedly connected. The center of gravity of the rotating shaft 401 is changed by the eccentric block 409, so that the rotating shaft 401 drives the screen box 301 to vibrate when it rotates.

[0025] Among them, the threaded rod 406 is threadedly connected to the connecting sleeve 405. During the rotation of the threaded rod 406, the eccentric block 409 will be pulled closer to or away from the connecting ring 403, thereby adjusting the eccentric distance of the eccentric block 409. The sliding rod 407 is slidably connected to the connecting sleeve 405. Under the joint action of the sliding rod 407 and the threaded rod 406, the eccentric block 409 remains stable.

[0026] Among them, the amplitude adjustment mechanism 402 also includes a hexagonal head 410 installed on the side of the counterweight block 408 away from the connecting ring 403, and the hexagonal head 410 is transmission-connected to the threaded rod 406. The hexagonal head 410 can be rotated with a hexagonal wrench, so that the threaded rod 406 can be rotated by rotating the hexagonal head 410 with a hexagonal wrench.

[0027] There are two amplitude adjustment mechanisms 402 , and the two amplitude adjustment mechanisms 402 are symmetrically distributed on both sides of the screen box 301 , so that the vibrations on both sides of the screen box 301 remain balanced.

[0028] Among them, the support component 2 includes a column 201 fixedly installed on the top of the base 1, a support spring 202 is installed on the top of the column 201, a connecting seat 203 is fixedly connected to the top of the support spring 202, and the connecting seat 203 is fixedly connected to the screen box 301, and the support spring 202 arranged between the screen box 301 and the column 201 forms a flexible connection between the screen box 301 and the column 201, which allows the screen box 301 to vibrate on the one hand, and at the same time, under the action of the support spring 202, the vibration of the screen box 301 will not produce a rigid impact on the column 201, thereby effectively reducing the vibration on the base 1.

[0029] There are two pairs of support assemblies 2 for a total of four, and the four support assemblies 2 are respectively arranged on both sides of the two ends of the screen box 301 , so that the screen box 301 is supported by the four support assemblies 2 .

[0030] Among them, the height of the inner column 201 of one pair of support assemblies 2 is greater than the height of the inner column 201 of the other pair of support assemblies 2, so that the screen box 301 is tilted as a whole, which facilitates the discharge of the mortar aggregate after screening from the lower end of the screen box 301.

[0031] Among them, the driving component 5 includes a support frame 501 fixedly arranged on the top of the base 1, and a motor 502 is fixedly installed on the top of the support frame 501. The support frame 501 is used to support the motor 502, and the output end of the motor 502 is connected to the rotating shaft 401 through a flexible coupling 503. The rotating shaft 401 is driven to rotate by the motor 502. At the same time, under the action of the flexible coupling 503, the influence of the vibration of the rotating shaft 401 on the motor 502 is reduced.

[0032] Specific working principle:

[0033] Before using the present invention, firstly connect the present invention to an external power supply and a control panel, and realize the operation of the present invention through the control of the external control panel. During the use of the present invention, the motor 502 in the present invention is started through the external control panel, and the motor 502 drives the rotating shaft 401 to rotate through the flexible coupling 503. Under the action of the counterweight block 408 in the amplitude adjustment mechanism 402, the center of gravity of the rotating shaft 401 and the eccentric block 409 deviates from the axis of the rotating shaft 401, thereby causing the rotating shaft 401 to vibrate during the rotation process, so that the screen box 301 Vibration occurs to achieve screening of dry-mixed mortar aggregates. During the screening of mortar aggregates, when it is necessary to adjust the vibration amplitude of the screen box 301, the hexagonal head 410 in the utility model can be rotated by a hexagonal wrench, and the hexagonal head 410 drives the threaded rod 406 to rotate. Since the threaded rod 406 is threadedly connected to the connecting sleeve 405, as the threaded rod 406 rotates, the distance between the counterweight block 408, the eccentric block 409 and the connecting ring 403 can be changed, thereby changing the distance of the center of gravity from the axis of the rotating shaft 401, thereby achieving the adjustment of the vibration amplitude of the screen box 301.

[0034] The implementation modes of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A circular vibrating screen for dry-mixed mortar with good screening effect, comprising a base (1), a support assembly (2), a screening assembly (3), an exciting assembly (4) and a driving assembly (5), wherein the screening assembly (3) comprises a screen box (301), a screen mesh (302) is arranged inside the screen box (301), and the characteristics are: The excitation assembly (4) includes a rotating shaft (401), the rotating shaft (401) passes through the screen box (301), and an amplitude adjustment mechanism (402) is installed on the surface of the rotating shaft (401), the amplitude adjustment mechanism (402) includes a connecting ring (403) fixedly sleeved on the surface of the rotating shaft (401), and two connecting frames (404) are symmetrically arranged on the side surface of the connecting ring (403), and the ends of the two connecting frames (404) away from the connecting ring (403) are welded with connecting sleeves (405), and the inner sides of the two connecting sleeves (405) are respectively installed with threaded rods (406) and sliding rods (407), and the same end of the threaded rod (406) and the sliding rod (407) is commonly connected to a counterweight block (408), and the other end of the threaded rod (406) and the sliding rod (407) is commonly connected to an eccentric block (409).

2. The circular vibrating screen for dry-mixed mortar with good screening effect as claimed in claim 1, characterized in that: The threaded rod (406) is threadedly connected to the connecting sleeve (405), and the sliding rod (407) is slidably connected to the connecting sleeve (405).

3. The circular vibrating screen for dry-mixed mortar with good screening effect as claimed in claim 2, characterized in that: The amplitude adjustment mechanism (402) further comprises a hexagonal head (410) installed on a side of the counterweight block (408) away from the connecting ring (403), and the hexagonal head (410) is transmission-connected to the threaded rod (406).

4. The circular vibrating screen for dry-mixed mortar with good screening effect as claimed in claim 3, characterized in that: The number of the amplitude adjustment mechanisms (402) is two, and the two amplitude adjustment mechanisms (402) are symmetrically distributed on both sides of the screen box (301).

5. The circular vibrating screen for dry-mixed mortar with good screening effect as claimed in claim 1, characterized in that: The support assembly (2) comprises a column (201) fixedly mounted on the top of the base (1), a support spring (202) mounted on the top of the column (201), a connecting seat (203) fixedly connected to the top of the support spring (202), and the connecting seat (203) is fixedly connected to the screen box (301).

6. The circular vibrating screen for dry-mixed mortar with good screening effect as claimed in claim 5, characterized in that: The number of the support assemblies (2) is two pairs, a total of four, and the four support assemblies (2) are respectively arranged on both sides of the two ends of the screen box (301).

7. The circular vibrating screen for dry-mixed mortar with good screening effect as claimed in claim 6, characterized in that: The height of the inner columns (201) of one pair of the support assemblies (2) is greater than the height of the inner columns (201) of the other pair of the support assemblies (2).

8. The circular vibrating screen for dry-mixed mortar with good screening effect as claimed in claim 1, characterized in that: The driving assembly (5) comprises a support frame (501) fixedly arranged on the top of the base (1), a motor (502) is fixedly installed on the top of the support frame (501), and the output end of the motor (502) is connected to the rotating shaft (401) by a flexible coupling (503).

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