Screen anti-blocking device for barite powder grinding and screening

Abstract

The utility model relates to the field of barite production, in particular to a screen mesh anti-blocking device for barite powder grinding and screening, which comprises a screening machine, a feed hopper, a discharge port, a screen mesh, a controller, a mounting plate, a screw rod, a guide rod, a moving plate and a cleaning rod, the top of the screening machine is fixedly connected with the feed hopper, and the left side of the screening machine is fixedly connected with the discharge port. A screen used for screening barite powder is fixedly connected into the screening machine, a controller is mounted on the screening machine, mounting plates are arranged at the four corners of the bottom of the screen, and the mounting plates are fixedly connected with the screen. A motor is started through a controller, so that the motor periodically rotates forwards and backwards, a lead screw is controlled to periodically rotate forwards and backwards, a limiting rod is matched to drive a moving plate to linearly move left and right in a reciprocating mode below a screen, and a cleaning rod can clean the screen in the moving process and scrape off barite powder blocking meshes of the screen; and therefore, the screening efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the barite production field especially, and relates to a sieve screen anti -blocking device of barite powder grinding and screening. BACKGROUND

[0002] Barite powder, namely barium sulfate powder, has a wide application in petroleum drilling mud weighting agent, medical X-ray shielding agent and many industrial fields due to its high density, good chemical stability and other characteristics. In the production and processing process of medium and large barite powder, vibration screening is a very key link, which is directly related to the quality of barite powder and subsequent use effect.

[0003] However, the current vibration screening technology has obvious defects. In the operation of the existing screening equipment, barite powder is easily stuck on the screen due to the lack of effective screen cleaning device. The powder stuck on the screen not only affects the normal screening efficiency of the screen, making the screening process slow, but also makes the subsequent cleaning work extremely troublesome, requiring a large amount of manpower and time. Long-term operation will seriously affect the screening quality, resulting in uneven product particle size and failing to meet the market demand for high-quality barite powder. SUMMARY

[0004] In order to overcome the above-mentioned defects of the existing barite powder grinding and screening technology, the technical problem of the utility model is to provide a sieve screen anti-blocking device for barite powder grinding and screening.

[0005] A sieve screen anti-blocking device for barite powder grinding and screening, comprising a screening machine, the top of the screening machine is fixedly connected with a feeding hopper, the left side of the screening machine is fixedly connected with a discharge port, the inside of the screening machine is fixedly connected with a screen for screening barite powder, the screening machine is installed with a controller, the bottom of the screen is provided with mounting plates at four corners, the mounting plates are fixedly connected with the screen, the mounting plate at the left front is fixedly connected with a motor, the motor is electrically connected with the controller, the output shaft of the motor is connected with a lead screw through a shaft coupling, the two mounting plates at the back are fixedly connected with guide rods, a moving plate is arranged between the lead screw and the guide rods, and the moving plate is located below the screen, the front end of the moving plate is threadedly connected with the lead screw, the rear end of the moving plate is slidably connected with the guide rods, and the moving plate is arranged with cleaning rods for cleaning the screen.

[0006] Further, the device further comprises an ejection assembly, the ejection assembly comprises a return spring, the cleaning rod is internally provided with a movable cavity, the movable cavity is slidably connected with a ejector rod for ejecting the powder in the screen mesh, the movable cavity is internally provided with a return spring, one end of the return spring is fixedly connected with the cleaning rod, and the other end of the return spring is fixedly connected with the bottom of the ejector rod.

[0007] Further, the cleaning rod is fixedly connected with a scraper, which is used to prevent dust and powder from accumulating on the cleaning rod during the cleaning process.

[0008] Further, the moving plate is fixedly connected with a flow guide plate, which is used to prevent powder from accumulating on the moving plate, and the shape of high in the middle and low at the four sides can guide the powder to flow to the four sides, thereby avoiding the accumulation of the powder on the moving plate.

[0009] Further, the top rod is fixedly connected with a sponge pad, which is used to buffer the collision between the top rod and the screen.

[0010] Further, the screening machine is fixedly connected with a warning light, which can enable the operator to quickly know the state of the equipment.

[0011] The device has the advantages that: the controller is used to start the motor, so that the motor is periodically reversed, the screw is periodically reversed, and the moving plate is driven to perform linear reciprocating motion below the screen under the cooperation of the limiting rod, the cleaning rod sweeps the screen during the movement, the barite powder clogging the screen mesh is scraped off, the screen is prevented from being clogged, and the screening efficiency of the device is improved.

[0012] The top rod is retracted into the movable cavity under the pressure of the cleaning rod and overcomes the elastic force of the reset spring, the top rod is ejected from the movable cavity of the cleaning rod under the elastic force of the reset spring when the cleaning rod passes through the screen mesh, the powder in the screen mesh is ejected, the purpose of cleaning the mesh is achieved, and the cleaning effect is further improved.

[0013] The sponge pad can buffer the collision between the top rod and the screen, and damage to the screen is avoided. DRAWINGS

[0014] Figure 1 The utility model discloses a three-dimensional structure schematic diagram.

[0015] Figure 2 The utility model discloses a three-dimensional structure schematic diagram of the screen, the controller and the mounting plate.

[0016] Figure 3 The utility model discloses a three-dimensional structure schematic diagram of the motor, the screw and the moving plate.

[0017] Figure 4 The utility model discloses a three-dimensional structure schematic diagram of the scraper, the flow guide plate and the sponge pad.

[0018] Figure 5 The utility model discloses a three-dimensional structure schematic diagram of the movable cavity, the reset spring and the top rod.

[0019] Markings in the accompanying drawings: 1: screening machine, 2: feed hopper, 3: discharge port, 4: screen, 5: controller, 6: mounting plate, 7: motor, 8: screw, 9: guide rod, 10: moving plate, 11: cleaning rod, 12: ejector assembly, 121: movable chamber, 122: return spring, 123: ejector rod, 13: scraper, 14: guide plate, 15: sponge pad, 16: warning light. DETAILED DESCRIPTION

[0020] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the present invention are shown. However, the present invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and will fully convey the scope of the invention to those skilled in the art.

[0021] Example: A screen anti-blocking device for barite powder grinding and screening, such as Figures 1-5 As shown, it includes a screening machine 1, a feed hopper 2, a discharge port 3, a screen 4, a controller 5, a mounting plate 6, a motor 7, a screw rod 8, a guide rod 9, a movable plate 10 and a cleaning rod 11. The top of the screening machine 1 is fixedly connected to the feed hopper 2, the left side of the screening machine 1 is fixedly connected to the discharge port 3, the inside of the screening machine 1 is fixedly connected to the screen 4 for screening barite powder, the screening machine 1 is installed with the controller 5, the bottom four corners of the screen 4 are provided with the mounting plates 6, the mounting plates 6 are fixedly connected to the screen 4, the motor 7 is fixedly connected to the mounting plate 6 on the left front, and the motor 7 is electrically connected to the controller 5. The output shaft of the motor 7 is connected to the screw rod 8 through a coupling, and the guide rod 9 is fixedly connected to the two mounting plates 6 at the rear. The movable plate 10 is provided between the screw rod 8 and the guide rod 9, and the movable plate 10 is located below the screen 4. The front end of the movable plate 10 is threadedly connected to the screw rod 8, and the rear end of the movable plate 10 is slidably connected to the guide rod 9. The cleaning rod 11 for cleaning the screen 4 is arranged on the movable plate 10, and also includes a scraper 13, and the scraper 13 is fixedly connected to the cleaning rod 11. The scraper 13 is used to prevent excessive dust and powder from accumulating on the surface of the cleaning rod 11 during the cleaning process.

[0022] Barite powder from the feed hopper 2 into the screen machine 1, the screen 4 is fixed inside the screen machine 1, its function is to screen different particle size of barite powder, meet the requirements of powder through the screen 4 from the discharge port 3, while the larger particles of barite is left on the screen 4, the motor 7 and the controller 5 electrically connected, the controller 5 will be in accordance with the preset time interval conditions, the controller 5 starts the motor 7, the output shaft of the motor 7 through the coupling drive the lead screw 8 positive and negative rotation, due to the limiting and guiding effect of the guide rod 9, the moving plate 10 will be below the screen 4 left and right reciprocating linear motion, in the process of moving plate 10, the cleaning rod 11 fixed on the scraper 13, can prevent in the cleaning process, too much dust and powder accumulated on the surface of the cleaning rod 11, ensure the cleaning effect of the cleaning rod 11, while the moving plate 10 on the deflector 14 middle high four low, can guide the powder on the moving plate 10 to flow to the four around, avoid the powder on the moving plate 10 accumulation, ensure the normal movement of the moving plate 10, the cleaning rod 11 in the moving process will clean the screen 4, the barite powder clogging in the screen 4 mesh is scraped off, so as to prevent the screen 4 from being blocked, also includes the deflector 14, the moving plate 10 is fixedly connected with the deflector 14, the deflector 14 is used for preventing the powder on the moving plate 10 from accumulating, wherein the middle high four low shape can guide the powder to flow to the four around, avoid the powder from gathering on the moving plate 10.

[0023] As Figure 1 , 4 and 5, also includes the ejector assembly 12, the ejector assembly 12 includes reset spring 122 and ejector rod 123, the cleaning rod 11 is internally provided with movable cavity 121, the movable cavity 121 is slidably connected with the ejector rod 123 for ejecting the powder in the screen 4 mesh, the movable cavity 121 is internally provided with the reset spring 122, one end of the reset spring 122 is fixedly connected to the cleaning rod 11, the other end of the reset spring 122 is fixedly connected to the bottom of the ejector rod 123, also includes sponge pad 15, the ejector rod 123 is fixedly connected with the sponge pad 15, the sponge pad 15 is used for buffering the collision between the ejector rod 123 and the screen 4.

[0024] When the cleaning rod 11 encounters the screen 4 mesh blockage in the moving process, the ejector rod 123 will generate certain expansion and contraction movement under the joint action of inertia and the reset spring 122, the powder clogging in the mesh is ejected by the force of the ejector rod 123 head, further enhancing the cleaning effect, the sponge pad 15 on the ejector rod 123 can buffer the collision between the ejector rod 123 and the screen 4, avoid damaging the screen 4.

[0025] As Figure 1 indicated, the screening machine 1 is fixedly connected with a warning light 16, and the warning light 16 can enable an operator to quickly know the equipment state.

[0026] The warning light 16 on the screening machine 1 can display the running state of the equipment, for example, when a fault occurs, the screen 4 is seriously blocked, or other abnormal conditions, the warning light 16 can emit a corresponding signal, so that the operator can quickly know the equipment state.

[0027] Although the utility model has been described with reference to the exemplary embodiments, it should be understood that the utility model is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to encompass all variations and equivalent structures and functions.

Claims

1. A screen anti-blocking device for barite powder grinding and screening, characterized by: Including screening machine (1), the screening machine (1) top fixedly connected with feed hopper (2), the left side of screening machine (1) is fixedly connected with discharge port (3), the inside of screening machine (1) is fixedly connected with screen (4) for screening barite powder, the controller (5) is installed on screening machine (1), the bottom four corners of screen (4) are equipped with mounting plate (6), the mounting plate (6) is fixedly connected with screen (4), the mounting plate (6) on the left side front is fixedly connected with motor (7), the motor (7) is electrically connected with controller (5), the output shaft of motor (7) is connected with lead screw (8) through coupling, the two mounting plates (6) on the rear are fixedly connected with guide rod (9), the lead screw (8) and guide rod (9) are equipped with moving plate (10), and moving plate (10) is located below screen (4), the front end of moving plate (10) is screwed on lead screw (8), the rear end of moving plate (10) is slidably connected to guide rod (9), the moving plate (10) is arranged with cleaning rod (11) for cleaning screen (4).

2. A blinding prevention device for use in connection with the screening of ground barite powder according to claim 1, characterized in that: It also includes ejector assembly (12), the ejector assembly (12) includes reset spring (122), the inside of cleaning rod (11) is equipped with movable cavity (121), the movable cavity (121) is slidably connected with ejector rod (123) for ejecting the powder in the mesh of screen (4), the inside of movable cavity (121) is equipped with reset spring (122), one end of reset spring (122) is fixedly connected to cleaning rod (11), the other end of reset spring (122) is fixedly connected to the bottom of ejector rod (123).

3. A blinding prevention device for use with a screen for sizing ground barite according to claim 2, characterized in that: It also includes scraper (13), the scraper (13) is fixedly connected to cleaning rod (11).

4. A blinding prevention device for use with a screen for sizing ground barite according to claim 3, characterized in that: It also includes guide vane (14), the guide vane (14) is fixedly connected to moving plate (10).

5. A blinding prevention device for use with a screen for sizing ground barite according to claim 4, characterized in that: It also includes sponge pad (15), the sponge pad (15) is fixedly connected to ejector rod (123).

6. A blinding prevention device for use with a screen for sizing ground barite according to claim 5, characterized in that: It also includes warning light (16), the warning light (16) is fixedly connected to screening machine (1).

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