Mortar powder screening equipment with adjustable vibration frequency

Abstract

The mortar powder screening equipment comprises a bottom plate, sleeves are fixedly connected to the four corners of the upper end face of the bottom plate, sleeve rods are movably connected to the upper portions of inner cavities of the sleeves, lower boxes are fixedly connected to the upper end faces of the sleeve rods, and a vibration device is fixedly arranged in the middle of the upper end face of the bottom plate. Lifting devices are fixedly connected to the four corners of an inner cavity of the lower box, an upper box is fixedly connected to the upper portions of the lifting devices, leakage holes are evenly formed in the bottom end face of an inner cavity of the upper box, a sealing door is movably connected to the lower portion of the front end face of the lower box, and an outlet is formed in the lower portion of the end face of the upper box. The equipment is simple in structure and convenient to operate, and the screening efficiency of manhole powder is effectively improved.

Description

Technical Field

[0001] This disclosure specifically discloses a screening device technology, specifically relating to mortar powder screening equipment with adjustable vibration frequency. Background Technology

[0002] A screening machine is a vibrating screening machine that uses the relative motion between granular materials and the screen surface to allow some particles to pass through the screen holes, separating materials such as sand, gravel, and crushed stone into different grades according to particle size. Screening machines are divided into two categories: fixed screens and moving screens. Moving screens are further divided into rotary screens and vibrating screens. Vibrating screens include eccentric ring screens, inertial vibrating screens, and resonant screens, etc. Their common feature is that the screen surface vibrates at high frequency and with small amplitude, causing the material on the screen surface to segregate.

[0003] According to application number 201711154831.4, a mortar screening machine is disclosed, including a machine body, a screening screen, and a vertical plate. One end of the vertical plate has a horizontal slot, and the other end has a horizontal through hole. A horizontal fixing plate is provided on the horizontal slot, and a horizontal screw is provided on the horizontal slot. A magnet is provided on the horizontal screw, and a fixing hole is provided on the horizontal fixing plate for fixing the screening screen. The advantages of this invention are: the horizontal slot on the vertical plate enables the installation and fixing of the horizontal fixing plate, allowing for height adjustment of the horizontal fixing plate on the vertical plate to adapt to different needs; the fixing hole enables the installation and fixing of the screening screen, allowing for the installation and fixing of different types of screening screens according to different screening requirements, facilitating rapid replacement of the screening screen. Therefore, when applied to grading screening, only the type of screening screen needs to be changed for operation; and the magnet on the horizontal screw attracts the machine body to fix the vertical plate, preventing loosening of the vertical plate and improving installation efficiency.

[0004] Existing mortar powder screening devices use gravity for screening, which makes it easy for powder to clog the screening holes. In addition, the existing screening vibration mode and frequency are limited, resulting in low screening efficiency. Therefore, we propose a mortar powder screening equipment with adjustable vibration frequency. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a structure with adjustable vibration frequency and diverse vibrations.

[0006] A mortar powder screening equipment with adjustable vibration frequency includes a base plate. Sleeves are fixedly connected to the four corners of the upper surface of the base plate. A sleeve rod is movably connected to the upper part of the inner cavity of each sleeve. A lower box is fixedly connected to the upper end of the sleeve rod. A vibrating device is fixedly installed in the middle of the upper surface of the base plate. The upper part of the vibrating device contacts the lower end of the lower box. Lifting devices are fixedly connected to the four corners of the inner cavity of the lower box. An upper box is fixedly connected to the upper part of the lifting devices. Leakage holes are evenly distributed on the bottom end of the inner cavity of the upper box. A sealing door is movably connected to the lower part of the front end of the lower box. An outlet is provided on the lower part of the upper box's end face.

[0007] According to the technical solution provided in the embodiments of this application, the vibration device includes a drive motor, a vertical plate, a cam, and a rotating rod. Vertical plates are fixedly connected to both the left and right sides of the upper surface of the base plate. A drive motor is fixedly connected to the upper part of the left end surface of the left vertical plate. The motor shaft of the drive motor passes through the left vertical plate and extends to the right side of the left vertical plate, and a rotating rod is fixedly connected thereto. The end of the rotating rod extends through to the right side of the right vertical plate, and a cam is engaged in the middle of the outer wall of the rotating rod.

[0008] According to the technical solution provided in the embodiments of this application, limit blocks are fixedly connected to both the upper and lower sides of the middle part of the outer wall of the rotating rod, and the limit blocks are matched with the opening in the middle of the inner cavity of the cam.

[0009] According to the technical solution provided in the embodiments of this application, a connecting seat is fixedly connected to the middle of the lower end face of the lower box, and a roller is movably connected to the inner cavity of the connecting seat, with the outer wall of the roller fitting against the outer wall of the cam.

[0010] According to the technical solution provided in the embodiments of this application, the lifting device includes a fixed cylinder, a spring, and a connecting rod. Fixed cylinders are fixedly connected to the four corners of the upper end face of the lower box cavity. A spring is fixedly connected to the bottom end face of the fixed cylinder cavity. A connecting rod is fixedly connected to the upper end face of the spring. The connecting rod matches the fixed cylinder, and the upper end face of the connecting rod is fixedly connected to the lower end face of the upper box.

[0011] According to the technical solution provided in the embodiments of this application, reset springs are uniformly fixedly connected to the front and rear sides of the inner cavity of the upper box, and vibration plates are fixedly connected to the ends of the reset springs.

[0012] In summary, this application discloses a mortar powder screening equipment with adjustable vibration frequency. Beneficial effects

[0013] The vibration device, sleeve, and rod, along with the limiting mechanism of the sleeve and rod, ensure that the lower box can rise and fall normally and stably. By starting the drive motor, the drive motor drives the rotating rod to rotate, which in turn drives the cam to rotate. The cam then drives the lower box to rise and fall, causing the lower box and the upper box to vibrate. By adjusting the speed of the drive motor and the speed of the cam, the vibration frequency can be adjusted, thereby improving the screening efficiency.

[0014] Through the lifting device, springs, and vibrating plates, the vibration of the lower box causes the weight of the upper box to drive the connecting rod to compress the spring. The connecting rod extends and retracts within the fixed cylinder, ensuring rapid vibration of the upper box. The vibration plate and the return spring work together to ensure that the powder rebounds with the vibration plate, thereby improving the screening efficiency of the powder. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the mortar powder screening equipment with adjustable vibration frequency in this application;

[0017] Figure 2 This is a schematic diagram of the rotating rod structure of the mortar powder screening equipment with adjustable vibration frequency in this application;

[0018] Figure 3 This is a top view schematic diagram of the mortar powder screening equipment with adjustable vibration frequency in this application.

[0019] Figure 4 It is in this application Figure 2 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Base plate; 2. Sleeve; 3. Sleeve rod; 4. Lower box; 5. Vibration device; 51. Drive motor; 52. Vertical plate; 53. Cam; 54. Rotating rod; 6. Connecting seat; 7. Roller; 8. Sealing door; 9. Upper box; 10. Outlet; 11. Limiting block; 12. Leakage hole; 13. Return spring; 14. Vibrating plate; 15. Fixed cylinder; 16. Spring; 17. Connecting rod. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] As mentioned in the background section, existing mortar powder screening devices use gravity for screening, which easily causes powder to clog the screening holes. Furthermore, the existing screening vibration modes and frequencies are limited, resulting in low screening efficiency. This disclosure proposes a structure with adjustable vibration frequency and diverse vibration modes. Example 1

[0024] Please see Figure 1The mortar powder screening equipment with adjustable vibration frequency includes a base plate 1. To ensure that the lower box 4 can vibrate stably up and down, sleeves 2 are fixedly connected at the four corners of the upper surface of the base plate 1. To ensure that the lower box 4 can rise and fall, sleeve rods 3 are movably connected to the upper part of the inner cavity of the sleeves 2. The lower box 4 is fixedly connected to the upper surface of the sleeve rods 3, and the upper surfaces of the four sets of sleeve rods 3 are fixedly connected to the lower surface of the lower box 4 to ensure the stability of the lower box 4. In order for the lower box 4 to rise and fall quickly, a vibration device 5 is fixedly installed in the middle of the upper surface of the base plate 1, and the upper part of the vibration device 5 is in contact with the lower surface of the lower box 4.

[0025] Please see Figure 1 In order for the upper box 9 to be able to screen powder of different particle sizes, a lifting device is fixedly connected to the four corners of the inner cavity of the lower box 4. The upper box 9 is fixedly connected to the upper part of the lifting device. The bottom end face of the inner cavity of the upper box 9 is evenly provided with leakage holes 12. In order to facilitate unloading, a sealing door 8 is movably connected to the lower part of the front end face of the lower box 4. An outlet 10 is provided at the lower part of the end face of the upper box 9.

[0026] Please see Figure 1 To ensure that both the lower box 4 and the upper box 9 can vibrate stably up and down, a vibration device 5 is formed by a drive motor 51, a vertical plate 52, a cam 53, and a rotating rod 54. Vertical plates 52 are fixedly connected to both sides of the upper surface of the base plate 1. A drive motor 51 is fixedly connected to the upper part of the left end face of the left vertical plate 52. The motor shaft of the drive motor 51 extends through the left vertical plate 52 to the right side of the left vertical plate 52 and is fixedly connected to a rotating rod 54. The end of the rotating rod 54 extends through to the right side of the right vertical plate 52. A cam 53 is engaged in the middle of the outer wall of the rotating rod 54. The cam 53 rotates at unequal distances between the outer wall and the shaft, causing the lower box 4 to vibrate frequently.

[0027] Please see Figure 2 To ensure that different cams 53 can be replaced, limit blocks 11 are fixedly connected to the upper and lower sides of the middle of the outer wall of the rotating rod 54, and the limit blocks 11 match the opening in the middle of the inner cavity of the cam 53, effectively ensuring that the rotation of the rotating rod 54 drives the cam 53 to rotate.

[0028] Please see Figure 1 In order to reduce the friction between the outer wall of the cam 53 and the bottom surface of the lower box 4, a connecting seat 6 is fixedly connected to the middle of the lower surface of the lower box 4. A roller 7 is movably connected to the inner cavity of the connecting seat 6, and the outer wall of the roller 7 is in contact with the outer wall of the cam 53. This reduces friction and extends the service life of the cam 53 and the lower box 4.

[0029] Please see Figure 4To ensure that the upper box 9 vibrates again during the up-and-down vibration of the lower box 4, thereby increasing the vibration amplitude, a lifting device is formed by a fixed cylinder 15, a spring 16, and a connecting rod 17. Fixed cylinders 15 are fixedly connected to the four corners of the upper end face of the inner cavity of the lower box 4. Springs 16 are fixedly connected to the bottom end face of the inner cavity of the fixed cylinder 15. Connecting rods 17 are fixedly connected to the upper end face of the springs 16, and the connecting rods 17 are matched with the fixed cylinders 15. The upper end face of the connecting rods 17 is fixedly connected to the lower end face of the upper box 9. Example 2

[0030] Please see Figure 3 To further ensure the initial screening of the powder, reset springs 13 are evenly fixedly connected to the front and rear sides of the inner cavity of the upper box 9. Vibration plates 14 are fixedly connected to the ends of the reset springs 13. The powder is vibrated by the vibration plates 14 to ensure that the powder does not accumulate in the leakage holes 12.

[0031] Working principle: In use, the powder to be screened is poured into the inner cavity of the upper box 9. The cam 53 with the required vibration frequency is locked outside the limiting block 11. Using an external power supply, the drive motor 51 is started. The drive motor 51 drives the rotating rod 54 to rotate. Through the limiting block 11, the cam 53 is limited. The rotating rod 54 drives the cam 53 to rotate. The cam 53 is in contact with the roller 7. Through the rotation of the cam 53, the lower box 4 is driven to vibrate up and down. The vibration frequency can be adjusted by adjusting the speed of the drive motor 51. The lower box 4 vibrates up and down. Through the weight of the upper box 9, the connecting rod 17 is driven to extend and retract in the inner cavity of the fixed cylinder 15, increasing the vibration amplitude of the upper box 9. Through the vibration plate 14, the rebound performance of the powder is ensured, so that the powder jumps and is screened quickly, thus completing the screening work.

[0032] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A mortar powder screening equipment with adjustable vibration frequency, comprising a base plate (1), characterized in that: Sleeves (2) are fixedly connected to the four corners of the upper end face of the base plate (1). A sleeve rod (3) is movably connected to the upper part of the inner cavity of the sleeve (2). A lower box (4) is fixedly connected to the upper end face of the sleeve rod (3). A vibration device (5) is fixedly installed in the middle of the upper end face of the base plate (1). The upper part of the vibration device (5) is in contact with the lower end face of the lower box (4). A lifting device is fixedly connected to the four corners of the inner cavity of the lower box (4). An upper box (9) is fixedly connected to the upper part of the lifting device. A leakage hole (12) is evenly opened on the bottom end face of the inner cavity of the upper box (9). A sealing door (8) is movably connected to the lower part of the front end face of the lower box (4). An outlet (10) is provided on the lower part of the end face of the upper box (9). A return spring (13) is evenly fixedly connected to the front and rear sides of the inner cavity of the upper box (9). A vibration plate (14) is fixedly connected to the end of each return spring (13).

2. The mortar powder screening equipment with adjustable vibration frequency according to claim 1, characterized in that: The vibration device (5) includes a drive motor (51), a vertical plate (52), a cam (53), and a rotating rod (54). The vertical plates (52) are fixedly connected to both the left and right sides of the upper end face of the base plate (1). The drive motor (51) is fixedly connected to the upper part of the left end face of the left vertical plate (52). The motor shaft of the drive motor (51) extends through the left vertical plate (52) to the right side of the left vertical plate (52) and is fixedly connected to the rotating rod (54). The end of the rotating rod (54) extends through to the right side of the right vertical plate (52). The cam (53) is engaged in the middle of the outer wall of the rotating rod (54).

3. The mortar powder screening equipment with adjustable vibration frequency according to claim 2, characterized in that: Limiting blocks (11) are fixedly connected to the upper and lower sides of the middle part of the outer wall of the rotating rod (54), and the limiting blocks (11) are matched with the opening in the middle of the inner cavity of the cam (53).

4. The mortar powder screening equipment with adjustable vibration frequency according to claim 2, characterized in that: A connecting seat (6) is fixedly connected to the middle of the lower end face of the lower box (4), and a roller (7) is movably connected to the inner cavity of the connecting seat (6). The outer wall of the roller (7) is in contact with the outer wall of the cam (53).

5. The mortar powder screening equipment with adjustable vibration frequency according to claim 1, characterized in that: The lifting device includes a fixed cylinder (15), a spring (16) and a connecting rod (17). Fixed cylinders (15) are fixedly connected to the four corners of the upper end face of the inner cavity of the lower box (4). A spring (16) is fixedly connected to the bottom end face of the inner cavity of the fixed cylinder (15). A connecting rod (17) is fixedly connected to the upper end face of the spring (16). The connecting rod (17) matches the fixed cylinder (15). The upper end face of the connecting rod (17) is fixedly connected to the lower end face of the upper box (9).

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