Discharging gate plate of vertical mill weighing bin

Abstract

The utility model discloses a vertical mill weighing bin blanking flashboard which comprises a flashboard frame, two guide rails are arranged on frame beams on the two sides in the flashboard frame, two horizontal guide grooves are symmetrically formed in the inner side faces of the two guide rails, and a material flashboard is arranged in the flashboard frame. The two side edges of the material flashboard are inserted into the two guide grooves respectively and are in guide sliding fit in the longitudinal direction, a through hole is formed in the side face of a rear frame beam of the flashboard frame, the material flashboard is inserted into the through hole in a penetrating mode, and a lead screw nut base is arranged at the bottom of the rear end of the material flashboard. The two ends of the rotating shaft are rotationally supported through two shaft seats arranged on the two sides of the bottom of the front end of the flashboard frame, a connecting rod is arranged on the outer wall of one end of the rotating shaft, an electric telescopic rod used for driving the connecting rod to swing is arranged on one side of the connecting rod, and a material receiving plate is arranged on the side wall of the rotating shaft. According to the utility model, the blanking of the stock bin can be stably controlled, the blanking amount is adjustable, and material blockage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mill weighing bin unloading control equipment, in particular to a vertical mill weighing bin unloading gate. Background Art

[0002] Vertical mill is a large-scale grinding equipment, widely used in cement, electric power, metallurgy, chemical industry, non-metallic minerals and other industries. It integrates crushing, drying, grinding, grading and conveying, with high production efficiency, and can grind block, granular and powdered raw materials into required powdered materials. After grinding, the powder is weighed through the weighing bin, and the weighed materials are discharged from the discharge pipe.

[0003] At present, the on-off of the discharge pipe of the vertical mill weighing bin is controlled by a gate valve. The discharge gate of the vertical mill weighing bin is manually adjusted and controlled. During the adjustment process, the discharge is unstable and the material is seriously scattered. The flow cannot be controlled at any time. The post personnel frequently adjust the gate plate to form certain safety hazards, which increases the labor intensity of employees. In addition, when the gate is closed, there is a pressure difference between the materials above and below the gate. The powder is easily adsorbed on the discharge pipe and the inner wall of the silo under the action of negative pressure, causing serious wall hanging of the discharge pipe and the silo. Utility Model Content

[0004] The utility model provides a material discharge gate plate for a vertical mill weighing bin, which solves the problems of time-consuming and labor-intensive manual adjustment and control of opening and closing of traditional gate plates, slow adjustment speed, unstable material discharge, uncontrollable material discharge amount and serious material spillage.

[0005] The utility model provides a material discharge gate of a vertical mill weighing bin, comprising a gate frame, two guide rails are arranged on the inner side frame beams on both sides of the gate frame, two horizontal guide grooves are symmetrically arranged on the inner sides of the two guide rails, a material gate is arranged in the gate frame, both sides of the material gate are respectively inserted into the two guide grooves and slide along the longitudinal guide, a through hole is arranged on the side of the rear side frame beam of the gate frame, the material gate is inserted into the through hole, a lead screw nut seat is arranged at the bottom of the rear end of the material gate, a bracket is arranged at the rear end of the gate frame, a lead screw is arranged longitudinally below the bracket, one end of the lead screw is connected to the lead screw nut seat, and the other end is connected to a motor arranged at the bottom of the bracket through a coupling, a horizontal rotating shaft is arranged at the bottom of the front end of the gate frame, both ends of the rotating shaft are rotatably supported by two shaft seats arranged on both sides of the bottom of the front end of the gate frame, a connecting rod is arranged on the outer wall of one end of the rotating shaft, an electric telescopic rod for driving the connecting rod to swing is arranged on one side of the connecting rod, and a material receiving plate is arranged on the side wall of the rotating shaft.

[0006] In the above technical scheme, further, a guide hole penetrating from front to back is arranged in the material gate, a guide column is arranged in the guide hole, a radial boss is arranged on the inner wall of the rear end of the guide hole, a compression spring is arranged between the radial boss and the guide column, one end of the compression spring is elastically connected and fixed to the radial boss, and the other end is elastically fixedly connected to the rear end of the guide column, an air inlet is arranged along the axial direction at the rear end of the guide column, a radial hole penetrating the outer wall of the guide column is radially arranged on the inner side wall of the air inlet, and an exhaust hole connected to the guide hole is arranged on the material gate.

[0007] In the above technical solution, further, an air filter is arranged in the exhaust hole.

[0008] In the above technical solution, further, an air supply connector is provided at the rear end of the guide hole, and the air supply connector is connected to an air pump through a pipeline for air supply.

[0009] In the above technical solution, further, the material receiving plate is an arc-shaped plate.

[0010] In the above technical solution, further, the motor is a servo motor.

[0011] It can be seen from the above technical solutions that the utility model provides a discharge gate for a vertical mill weighing bin.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The motor drives the lead screw to rotate, and the rotation of the lead screw drives the lead screw nut seat to move on the lead screw. The movement of the lead screw nut seat drives the material gate to move along the guide grooves of the two guide rails to close or open the unloading channel, thereby realizing the rapid and stable adjustment and control of the unloading of the unloading pipe. The electric telescopic rod drives the connecting rod to drive the rotating shaft to rotate, and the rotation of the rotating shaft drives the material receiving plate to swing to collect the materials scattered during the unloading process of the material gate. The opening and closing of the material gate is electrically controlled, which saves labor costs and has a fast adjustment speed.

[0014] 2. High-pressure gas is provided by the air pump and enters the radial hole through the air inlet hole. When the silo is discharged to form a negative pressure state, the high-pressure gas is discharged into the silo above the material gate through the exhaust hole, so that the supplementary gas in the silo can quickly restore the normal pressure, preventing the negative pressure formed by the silo discharge and causing the material to hang on the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of a discharge gate of a vertical mill weighing bin proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the gate frame structure of a vertical mill weighing bin unloading gate proposed by the utility model;

[0018] Figure 3 The utility model provides a schematic diagram of the internal structure of a material gate of a vertical mill weighing bin discharge gate.

[0019] In the figure:

[0020] 1-gate frame; 11-through hole; 12-rotating shaft; 13-axle seat; 14-connecting rod; 15-electric telescopic rod; 16-material receiving plate;

[0021] 2-guide rail; 21-guide groove;

[0022] 3-Material gate; 31-Guide hole; 32-Guide column; 33-Radial boss; 34-Compression spring; 35-Air inlet hole; 36-Radial hole; 37-Exhaust hole; 38-Air filter; 311-Air supply connector;

[0023] 4-screw nut seat;

[0024] 5- Bracket;

[0025] 6-screw; 61-motor; 62-coupling. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0027] Embodiment 1:

[0028] See also Figure 1-3A material discharge gate of a vertical mill weighing bin comprises a gate frame 1, which is a rectangular steel frame. The middle of the gate frame 1 is a material discharge channel hole. Two guide rails 2 are arranged on the frame beams on both sides of the gate frame 1. The two guide rails 2 are respectively connected and fixed to the corresponding frame beams by bolts. Two guide grooves 21 horizontally distributed along the longitudinal direction are symmetrically arranged on the inner side surfaces of the two guide rails 2. A material gate 3 is horizontally arranged in the gate frame 1. The two sides of the material gate 3 are respectively partially horizontally inserted into the two guide grooves 21 and slide along the longitudinal guide. The material gate 3 is inserted into the through hole 11, and a screw nut seat 4 is arranged at the bottom of the rear end of the material gate 3. A bracket 5 is arranged at the rear end of the gate frame 1, and a screw 6 is arranged longitudinally below the bracket 5. One end of the screw 6 is connected to the screw nut seat 4, and the spiral hole of the screw nut seat 4 cooperates with the thread on the outer wall of the screw 6. During the rotation of the screw 6, the screw nut seat 4 is driven to move spirally on the screw 6, and the other end is connected to the motor 61 arranged at the bottom of the bracket 5 through the connection. The gate frame 1 is connected to the shaft 62, and a horizontal rotating shaft 12 is set at the bottom of the front end of the gate frame 1. The two ends of the rotating shaft 12 are rotatably supported by two shaft seats 13 set on both sides of the bottom of the front end of the gate frame 1. A connecting rod 14 is set on the outer wall of one end of the rotating shaft 12, and an electric telescopic rod 15 for driving the connecting rod 14 to swing is set on one side of the connecting rod 14. A material receiving plate 16 is set on the side wall of the rotating shaft 12. One end of the material receiving plate 16 is fixedly connected to the outer wall of the rotating shaft 12, and the other end is suspended below the material gate 3. The motor 61 drives the lead screw 6 to rotate, and the lead screw 6 rotates The screw nut seat 4 is driven to move on the screw 6, and the movement of the screw nut seat 4 drives the material gate 3 to move along the guide grooves 21 of the two guide rails 2 to close or open the discharge channel, thereby realizing fast and stable adjustment and control of the discharge of the discharge pipe. The electric telescopic rod 15 drives the connecting rod 14 to drive the rotating shaft 12 to rotate, and the rotation of the rotating shaft 12 drives the material receiving plate 16 to swing to collect the material scattered by the material gate 3 during the discharge process. By electrically controlling the opening and closing of the material gate 3, labor costs are saved and the adjustment speed is fast.

[0029] In this embodiment, see Figure 3A guide hole 31 which passes through the front and back is arranged in the material gate 3, and a guide column 32 is arranged in the guide hole 31. The guide hole 31 has the same diameter as the guide column 3, and the guide column 3 and the guide hole 31 are clearance-matched so that the guide column 3 can be guided and moved in the guide hole 31. An annular radial boss 33 is arranged on the inner wall of the rear end of the guide hole 31 along the circumferential direction, and a compression spring 34 is arranged between the radial boss 33 and the guide column 32. One end of the compression spring 34 is elastically connected and fixed with the radial boss 33, and the other end is elastically fixedly connected with the rear end of the guide column 32. An air inlet 35 is arranged on the rear end surface of the guide column 32 along the axial direction, and a radial hole 36 which passes through the outer wall of the guide column 32 is arranged on the inner side wall of the air inlet 35 in the radial direction. The gas in the guide hole 31 can enter the radial hole 36 through the air inlet 35. An exhaust hole 37 which is connected with the guide hole 31 is arranged on the material gate 3. When exhaust is required, the guide column 3 moves backward in the guide hole 31 to compress the compression spring 34. Figure 3 The compression spring 34 is in a compressed state until the radial hole 36 and the exhaust hole 37 are connected to each other. When exhaust is not needed, the guide column 3 moves forward in the guide hole 31 to make the compression spring 34 in a non-compressed state. The radial hole 36 and the exhaust hole 37 are dislocated and not connected to each other. The exhaust hole 37 is closed by the side wall of the guide column 3, and the gas in the guide hole 31 cannot enter the exhaust hole 37.

[0030] In this embodiment, see Figure 3 An air filter 38 is arranged in the exhaust hole 37 , and the function of the air filter 38 is to prevent the material in the silo above the material gate 3 from entering the exhaust hole 37 .

[0031] In this embodiment, see Figure 3 , an air supply connector 311 is provided at the rear end of the guide hole 31, and the air supply connector 311 is connected to the air pump through a pipeline for air supply. After the discharge is stopped, the material gate 3 is quickly closed, resulting in a pressure difference between the materials above and below the gate. The powder is easily adsorbed on the inner wall of the discharge pipe and the silo under the action of negative pressure, causing the discharge pipe and the silo to hang on the wall seriously. The air pump is used to provide high-pressure air into the guide hole 31. After the discharge is completed, the material gate 3 is quickly closed, so that the guide column 3 collides with the frame beam of the gate frame 1 and then completely enters In the guide hole 31, at the same time, the guide column 3 compresses the compression spring 34 in the process of entering the guide hole 31, the radial hole 36 and the exhaust hole 37 are connected with each other, and the high-pressure gas in the guide hole 31 enters the radial hole 36 through the air inlet hole 35, and then is discharged into the silo above the material gate plate 3 through the exhaust hole 37. When it is detected that the pressure in the silo returns to normal, the air supply is stopped to make the pressure in the silo quickly return to normal pressure, which can prevent the powder from being adsorbed on the discharge pipe and the inner wall of the silo under the action of negative pressure.

[0032] In this embodiment, see Figure 1The through hole 11 is rectangular in shape so that the material gate 3 can pass through the through hole 11. The material gate 3 is a rectangular plate with a certain thickness. When the material gate 3 fully opens the discharge port, the material gate 3 needs to move to the side of the gate frame 1 through the through hole 11. During the movement, the material gate 3 is guided and supported by the through hole 11 to prevent the material gate 3 from being unsupported after detaching from the guide rail 2.

[0033] In this embodiment, see Figure 1 The receiving plate 16 is an upward curved plate. On the one hand, the receiving plate 16 is used to receive the material scattered by the material gate 3 during the closing process. On the other hand, it can assist the material gate 3 to complete the material discharge, prevent the material from being discharged too quickly, play a buffering role on the material, and prevent the material from being discharged too quickly to cause large dust pollution.

[0034] In this embodiment, the motor 61 is a servo motor, and the motor 61 controls the forward and reverse rotation of the lead screw 6 to achieve precise control of the opening of the material gate 3 to open and close the discharge port, thereby achieving a stable discharge process.

[0035] It can be seen from the above technical scheme that when in use, when it is necessary to open the material bin to discharge materials, the motor 61 drives the lead screw 6 to rotate clockwise, driving the lead screw nut seat 4 to move backward on the lead screw 6, and the movement of the lead screw nut seat 4 drives the material gate 3 to move backward, and the movement of the lead screw nut seat 4 drives the material gate 3 to move backward along the guide grooves 21 of the two guide rails 2 until the material discharge channel is fully opened. When the material gate 3 is separated from the front end frame of the gate frame 1, the compression spring 3 extends without external force, driving the guide column 32 in the guide hole 31 to partially extend out of the guide hole 31. At the same time, the radial hole 36 is no longer connected to the exhaust hole 37, and the exhaust hole 37 is closed by the side wall of the guide column 32. When it is necessary to close the material bin to discharge materials, the motor 61 drives the lead screw 6 to rotate counterclockwise, driving the lead screw nut seat 4 to move forward on the lead screw 6, and the movement of the lead screw nut seat 4 drives the material gate 3 to move forward. The movement of the lead screw nut seat 4 drives the material gate 3 to move forward along the guide grooves 21 of the two guide rails 2 until the unloading channel is completely closed. At this time, the material gate 3 abuts against the front end frame of the gate frame 1, and the guide column 32 completely enters the guide hole 31 and compresses the compression spring 34. At the same time, the guide hole 31 is connected with the air inlet hole 35. High-pressure gas is provided in the guide hole 31 through an air pump and enters the radial hole 36 through the air inlet hole 35, and then is discharged into the silo above the material gate 3 through the exhaust hole 37, so that the supplementary gas in the silo quickly restores the normal pressure.

[0036] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. The present invention is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope of the present invention is indicated by the claims.

[0037] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A discharge gate for a vertical mill weighing bin, characterized in that: The invention comprises a gate frame (1), wherein two guide rails (2) are arranged on the inner side frame beams of the gate frame (1), and two horizontal guide grooves (21) are symmetrically arranged on the inner side surfaces of the two guide rails (2); a material gate (3) is arranged in the gate frame (1), and the two side edges of the material gate (3) are respectively inserted into the two guide grooves (21) to slide along the longitudinal guide; a through hole (11) is arranged on the side surface of the rear side frame beam of the gate frame (1), and the material gate (3) is inserted into the through hole (11); a lead screw nut seat (4) is arranged at the bottom of the rear end of the material gate (3); a bracket (5) is arranged at the rear end of the gate frame (1), and the bracket (5) A lead screw (6) is arranged longitudinally below, one end of the lead screw (6) is connected to the lead screw nut seat (4), and the other end is connected to the motor (61) arranged at the bottom of the bracket (5) through a coupling (62); a transverse rotating shaft (12) is arranged at the bottom of the front end of the gate frame (1), and the two ends of the rotating shaft (12) are rotatably supported by two shaft seats (13) arranged on both sides of the bottom of the front end of the gate frame (1); a connecting rod (14) is arranged on the outer wall of one end of the rotating shaft (12), and an electric telescopic rod (15) for driving the connecting rod (14) to swing is arranged on one side of the connecting rod (14); and a material receiving plate (16) is arranged on the side wall of the rotating shaft (12).

2. The vertical mill weighing bin discharge gate according to claim 1, characterized in that: A guide hole (31) extending through the front and rear is arranged in the material gate (3), a guide column (32) is arranged in the guide hole (31), a radial boss (33) is arranged on the inner wall of the rear end of the guide hole (31), a compression spring (34) is arranged between the radial boss (33) and the guide column (32), one end of the compression spring (34) is elastically connected and fixed to the radial boss (33), and the other end is elastically fixedly connected to the rear end of the guide column (32), an air inlet (35) is arranged at the rear end of the guide column (32) along the axial direction, and a radial hole (36) is arranged on the inner side wall of the air inlet (35) and passes through the outer side wall of the guide column (32) along the radial direction, and an exhaust hole (37) connected to the guide hole (31) is arranged on the material gate (3).

3. The vertical mill weighing bin discharge gate according to claim 2 is characterized in that: An air filter (38) is arranged in the exhaust hole (37).

4. The vertical mill weighing bin discharge gate according to claim 2, characterized in that: An air supply connector (311) is provided at the rear end of the guide hole (31), and the air supply connector (311) is connected to an air pump through a pipeline for air supply.

5. The vertical mill weighing bin discharge gate according to claim 1, characterized in that: The material receiving plate (16) is an arc-shaped plate.

6. The vertical mill weighing bin discharge gate according to claim 1, characterized in that: The motor (61) is a servo motor.

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