Screen piece knocking device for electromagnetic screen

Abstract

The utility model discloses an electromagnetic screen piece knocking device which comprises a rotating motor (1), a coupler (2), a transmission shaft (3), a motor support (4), a supporting platform (10), a cam module (5) fixedly connected with the transmission shaft (3), a knocking arm (6), a knocking arm supporting shaft (7), an electromagnetic screen piece (11) and baffles (8) installed on the outer sides of screen sides on the two sides of the electromagnetic screen piece (11). The transmission shaft (3) and the two knocking arm supports (7) penetrate through reserved round holes in the two baffles (8) respectively, one end of each knocking arm (6) is connected to the corresponding knocking arm supporting shaft (7) in a sleeved mode, and the other end of each knocking arm (6) makes contact with the electromagnetic screen piece (11). According to the electromagnetic screen, the screen pieces of the electromagnetic screen are prevented from being blocked, and the dewatering capacity of the electromagnetic screen is improved. The structure is simple, and operation and use are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic vibrating screen systems, and in particular relates to an electromagnetic screen sheet knocking device. Background Art

[0002] The electromagnetic screen is used to dehydrate the coarse and fine coal slime. Its movement principle is that the coal flow moves toward the screen mouth while vibrating and dehydrating under the action of the electromagnetic screen. Under normal circumstances, the material reaching the screen mouth is a fine particle bulk material that has been dehydrated. However, it is found in the production process that the material reaching the screen mouth is not fully dehydrated and enters the centrifuge in a waterfall shape, causing water leakage accidents and seriously affecting the moisture index of the product. The reason for the insufficient dehydration of the material is that the electromagnetic screen is blocked, so that the dehydration capacity of the electromagnetic screen cannot meet the normal production requirements. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the utility model provides an electromagnetic sieve plate knocking device, which has a simple structure and is easy to operate and use.

[0004] The technical solution of the utility model to solve the above technical problems is as follows: An electromagnetic sieve plate knocking device, including a rotating motor, a coupling, a transmission shaft, a motor bracket, a support platform, a cam module welded to the transmission shaft, a knocking arm, a knocking arm support shaft, an electromagnetic sieve plate, and baffles installed on the outside of the sieve sides of the electromagnetic sieve plate. The baffle on one side of the rotating motor is welded to the motor bracket, and the baffle on the other side of the rotating motor is welded to the support platform. The transmission shaft and the two knocking arm supports pass through the circular holes reserved in the two baffles on both sides respectively, one end of the knocking arm is sleeved on the knocking arm support shaft, and the other end of the knocking arm is in contact with the electromagnetic sieve plate.

[0005] Furthermore, the striking arm is composed of a striking upper arm, a striking lower arm, a force-bearing arm and a striking plate.

[0006] Furthermore, the transmission shaft, the striking arm support shaft and the striking arm are made of round tubes of the same type.

[0007] Furthermore, the end of the knocking arm is connected to the knocking plate by bolts, and the material of the knocking plate is a polyurethane wear-resistant plate.

[0008] Furthermore, the force-bearing arm is welded from two sections of round tubes that are one specification larger than the striking arm. The force-bearing arm is "T-shaped", and the "T-shaped" top of the force-bearing arm is welded into one piece with the striking arm. Both sides of the "T-shaped" top of the force-bearing arm are sleeved on the supporting shaft of the striking arm.

[0009] Furthermore, each electromagnetic sieve plate is provided with three knocking arms, which ensure that the electromagnetic sieve plate is subjected to sufficient knocking effect, thereby ensuring that the sieve holes are clean, preventing blockage, and enhancing the dehydration effect.

[0010] Furthermore, limiting circular tubes are welded on the striking arm support shafts on both sides of the "T-shaped" top of the force-bearing arm to prevent the striking arm from axially moving along the striking arm support shaft.

[0011] Furthermore, each cam module corresponds to a knocking arm, and the lifting and lowering of the knocking arm is controlled by the cam module.

[0012] Preferably, the striking forearm of the striking arm is made of 12# channel steel.

[0013] Preferably, the rotating motor adopts a 0.75KW motor. The 0.75KW motor will neither cause damage to the welding part and the electromagnetic screen due to excessive vibration, nor cause insufficient knocking vibration effect due to too small vibration.

[0014] Preferably, the rotary motor is set to start once every half an hour, each time for one minute, so as to reduce continuous damage to the screen while ensuring the cleanliness of the screen holes.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the rotating motor drives the transmission shaft to rotate through the coupling, the cam module rotates with the transmission shaft, the cam module controls the lifting and lowering of the knocking arm, completes the knocking of the electromagnetic screen, achieves a full knocking effect, prevents the electromagnetic screen from being blocked, strengthens the dehydration effect, improves the dehydration capacity of the electromagnetic screen, and ensures that the screening product index meets the washing requirements. It has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A top view of an electromagnetic screen plate striking device;

[0017] Figure 2 A schematic diagram of the position of a striking arm of an electromagnetic sieve plate striking device;

[0018] Figure 3 The figure is a schematic diagram of the motion trajectory of a striking arm of an electromagnetic sieve plate striking device.

[0019] In the figure: 1. rotating motor, 2. coupling, 3. transmission shaft, 4. motor bracket, 5. cam module, 6. knocking arm, 7. knocking arm support, 8. baffle, 9. limiting round tube, 10. supporting platform, 11. electromagnetic screen, 601, knocking arm, 602, knocking arm, 603, force arm, 604, knocking plate. DETAILED DESCRIPTION

[0020] In order to help those skilled in the art to have a clearer understanding of the technical solution of the utility model, the technical solution of the utility model will be further clearly and completely described below in combination with the embodiments of the utility model and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, an electromagnetic sieve plate knocking device provided in this embodiment includes a rotating motor 1, a coupling 2, a transmission shaft 3, a motor bracket 4, a support platform 10, a cam module 5 welded to the transmission shaft 3, a knocking arm 6, a knocking arm support shaft 7, an electromagnetic sieve plate 11 and baffles 8 installed on the outside of the sieve sides of the electromagnetic sieve plate 11. The baffle 8 located on one side of the rotating motor 1 is welded to the motor bracket 4, and the baffle 8 located on the other side of the rotating motor 1 is welded to the support platform 10. The transmission shaft 3 and the two knocking arm supports 7 pass through the circular holes reserved by the two baffles 8 on both sides, respectively, and the baffle 8 is used to support the transmission shaft 3 and the two knocking arm supports 7. One end of the knocking arm 6 is sleeved on the knocking arm support shaft 7, and the knocking arm 6 is actively connected to the knocking arm support shaft 7. The knocking arm 6 rotates after being subjected to the pressure of the cam module 5, and the cam module 5 controls the lifting and lowering of the knocking arm 6. The other end of the knocking arm 6 contacts the electromagnetic sieve plate 11.

[0022] like Figure 2 and Figure 1 As shown, the knocking arm 6 is connected by a knocking arm 601, a knocking arm 602, a force arm 603 and a knocking plate 604. The transmission shaft 3, the knocking arm support shaft 7 and the knocking arm 601 of the knocking arm 6 are made of the same type of round tube. The knocking arm 602 of the knocking arm 6 is made of 12# channel steel, and the end of the knocking arm 602 is connected to the knocking plate 604 with bolts, and the knocking plate 604 is made of polyurethane wear-resistant plate. The force-bearing arm 603 of the striking arm 6 is welded from two sections of round tubes which are one specification larger than the striking arm 601. The force-bearing arm 603 is in a "T-shape". The "T-shaped" top of the force-bearing arm 603 is welded into one piece with the striking arm 601 of the striking arm 6. The two sides of the "T-shaped" top of the force-bearing arm 603 are sleeved on the striking arm support shaft 7 and are actively connected with the striking arm support shaft 7, so that the striking arm 6 rotates after being subjected to the pressure of the cam module 5 on the force-bearing arm 603.

[0023] In this embodiment, a set of electromagnetic screens is provided with four electromagnetic screen plates 11, and each electromagnetic screen plate 11 is provided with three knocking arms 602, so as to ensure that the electromagnetic screen plates 11 are sufficiently knocked, thereby ensuring that the screen holes are clean, preventing blockage, and enhancing the dehydration effect.

[0024] like Figure 1 As shown, a limiting round tube 9 is welded on the knocking arm support shaft 7 on both sides of the "T-shaped" top of the force-bearing arm 603 to prevent the knocking arm 6 from axially moving along the knocking arm support shaft 7. Each cam module 5 corresponds to a knocking arm 6, and the cam module 5 controls the lifting and lowering of the knocking arm.

[0025] The rotating motor 1 of this embodiment adopts a 0.75KW motor. The 0.75KW motor will neither cause damage to the welding part and the electromagnetic screen plate 11 due to excessive vibration, nor cause insufficient knocking vibration effect due to too small vibration.

[0026] The rotary motor 1 is preferably set to start once every half an hour, each time for one minute, so as to reduce the continuous damage to the screen while ensuring the cleanliness of the screen holes.

[0027] The method of use and working principle are as follows: the rotating motor 1 drives the transmission shaft 3 to rotate through the coupling 2, the cam module 5 rotates along with the transmission shaft 3, the cam module 5 rotates until it contacts the "T-shaped" end of the force arm 603 of the knocking arm 6, and drives the knocking arm 6 to lift, the cam module 5 continues to rotate until it loses contact with the "T-shaped" end of the force arm 603 of the knocking arm 6, and the knocking arm 6 falls down, completing the knocking on the screen surface.

[0028] Since the contact process between the knocking plate 604 and the electromagnetic screen sheet 11 is surface contact, a sufficient knocking effect is achieved, clogging is prevented, the dehydration effect is enhanced, the dehydration capacity of the electromagnetic screen is improved, and the screening product indicators are guaranteed to meet the washing requirements.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An electromagnetic sieve plate striking device, characterized in that: The invention comprises a rotating motor (1), a coupling (2), a transmission shaft (3), a motor bracket (4), a support platform (10), a cam module (5) fixedly connected to the transmission shaft (3), a knocking arm (6), a knocking arm support shaft (7), an electromagnetic screen plate (11), and baffles (8) installed on the outer sides of the screen sides of the electromagnetic screen plate (11), wherein the baffle (8) located on one side of the rotating motor (1) is welded to the motor bracket (4), and the baffle (8) located on the other side of the rotating motor (1) is welded to the support platform (10), the transmission shaft (3) and the two knocking arm support shafts (7) respectively pass through the circular holes reserved in the two baffles (8), one end of the knocking arm (6) is sleeved on the knocking arm support shaft (7), and the other end of the knocking arm (6) is in contact with the electromagnetic screen plate 11.

2. The electromagnetic screen striking device according to claim 1, characterized in that: The transmission shaft (3) is connected to the cam module (5) by welding.

3. The electromagnetic screen striking device according to claim 1, characterized in that: The striking arm (6) is fixedly connected by a striking upper arm (601), a striking lower arm (602), a force-bearing arm (603) and a striking plate (604).

4. The electromagnetic screen striking device according to claim 3, characterized in that: The transmission shaft (3), the striking arm support shaft (7) and the striking arm (601) are made of round tubes of the same model.

5. The electromagnetic screen striking device according to claim 3, characterized in that: The end of the striking arm (602) is connected to the striking plate (604) by means of bolts.

6. The electromagnetic screen striking device according to claim 3, characterized in that: The knocking plate (604) is made of a polyurethane wear-resistant plate.

7. The electromagnetic screen striking device according to claim 3, characterized in that: The force-bearing arm (603) is welded from two sections of round tubes of a larger specification than the striking arm (601); the "T-shaped" top of the force-bearing arm (603) is welded to the striking arm (601) as a whole; the two sides of the "T-shaped" top of the force-bearing arm (603) are movably sleeved on the striking arm support shaft (7); and limiting round tubes (9) are welded on the striking arm support shaft (7) on both sides of the "T-shaped" top of the force-bearing arm (603).

8. The electromagnetic screen striking device according to claim 3, characterized in that: The striking small arm (602) is made of 12# channel steel.

9. The electromagnetic screen striking device according to claim 1, characterized in that: The rotating electric machine (1) is a 0.75 kW electric machine.

10. The electromagnetic screen plate striking device according to claim 3, characterized in that: Each of the cam modules (5) corresponds to one of the striking arms (6), and each of the electromagnetic screen plates (11) is provided with three of the striking arms (602).

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