Vibration chute for screening of coal preparation plant

Abstract

The utility model relates to the technical field of chutes, in particular to a vibrating chute for screening in a coal preparation plant, which comprises a base, a support frame is fixedly connected to the upper surface of the base, a connecting cover is fixedly connected to the upper surface of the support frame, a rack is fixedly connected to the inner wall of the connecting cover, a screen is movably connected to the inner bottom surface of the connecting cover in an embedded manner, and a vibrating screen is fixedly connected to the inner bottom surface of the connecting cover. The rear surface of the supporting frame is in threaded connection with an exhaust hood, a driving module is arranged on the front surface of the base and comprises a motor speed reducer, a crankshaft and fan blades, the motor speed reducer is fixedly connected to the front surface of the supporting frame, the crankshaft is rotationally connected to the interior of the supporting frame, and the output end of the motor speed reducer is fixedly connected with the crankshaft; according to the pulverized coal screening device, the investment of a power assembly is saved while the screening effect and pulverized coal conveying are guaranteed, and the part cost of the device is further saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chute technical field, concretely is a kind of vibration chute for screening in coal preparation plant. BACKGROUND

[0002] The vibration chute used in coal preparation plant is a kind of efficient screening equipment, mainly used for classifying and screening coal, but the existing device has certain drawbacks, such as the vibration chute for screening in coal preparation plant disclosed in the announcement No.CN221581129U, relates to the technical field of coal screening vibration chute. Including stand and chute, the chute includes two side plates and the screen mesh fixed between the side plates, the stand top movably provided with several vertical rods in array distribution, the height of vertical rod from left to right decreases in turn;Vertical spring is fixed between vertical rod and side plate;The left top of screen mesh is fixed with inverted V-shaped baffle;

[0003] The above-mentioned device realizes screening and classification, but needs to invest more power components, such as vibration motor and four negative pressure fans, which increases the cost of device parts and further increases the cost of product update iteration. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of vibration chute for screening in coal preparation plant to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of vibration chute for screening in coal preparation plant, including base, the upper surface of the base is fixedly connected with support frame, the upper surface of the support frame is fixedly connected with connecting cover, the inner wall of the connecting cover is fixedly connected with rack, the inner bottom surface of the connecting cover is embedded and movably connected with screen mesh, the rear surface of the support frame is threadedly connected with exhaust cover;

[0007] The front surface of the base is provided with drive module, the drive module includes motor reducer, crankshaft and fan blade, motor reducer is fixedly connected to the front surface of support frame, crankshaft is rotatably connected to the inside of support frame, the output end of motor reducer and crankshaft are fixedly connected, fan blade is fixedly connected to the other end of crankshaft.

[0008] Further, the drive module further includes connecting rod and hinged block, connecting rod is nested and movably connected to the outer surface of crankshaft, hinged block is movably connected to the upper end of connecting rod, the lower surface of the screen mesh is fixedly connected with top rod, the hinged block and top rod are hinged.

[0009] Further, the inner surface of the connecting cover is fixedly connected with top plate, the lower surface of the top plate is fixedly connected with elastic plate.

[0010] Further in: the outer surface of the rack is fixedly connected with a baffle, the upper surface of the screen is rotatably connected with two transmission rollers, the outer surface of one of the transmission rollers is fixedly connected with a gear, the gear is meshingly connected with the rack, and the outer surface of the transmission roller is nested with a conveying belt.

[0011] Further in: the lower surface of the screen is fixedly connected with a support rod near the four corners, the lower surface of the connecting cover is threadedly connected with a mounting cylinder, and the mounting cylinder contains a spring.

[0012] Further in: the rear surface of the exhaust cover is threadedly connected with a material conveying pipe, and the exhaust cover is matched with the fan blade.

[0013] Further in: the upper surface of the exhaust cover is threadedly connected with a gas conveying pipe, the output end of the gas conveying pipe is fixedly connected with a suction cover, and the suction cover is embeddedly connected to the rear surface of the connecting cover.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. On the basis of the screen shaking, the coal blocks contact the elastic plates when shaking, so that the coal blocks not only receive the thrust of the screen but also receive the reaction force of the elastic plates, the efficiency of coal block screening is improved, and when the screen is shaking, the gear drives the transmission roller to rotate because the gear is meshed with the rack, the inclined conveying belt is operated, the coal blocks are assisted to be discharged when the conveying belt is operated in the forward direction, the coal blocks stacked together are moved backward when the conveying belt is operated in the reverse direction, only the coal blocks smaller than or equal to the distance between the conveying belt and the screen are allowed to pass through, and the pressure of the screen screening is reduced.

[0016] 2. While ensuring the screen shaking, the fan blade rotates to cooperate with the exhaust cover and the material conveying pipe to convey air outward, the gas conveying pipe cooperates with the suction cover to suck the coal powder between the bottom surface of the connecting cover and the lower surface of the screen, the coal powder is discharged from the gas conveying pipe, the power component investment is saved while ensuring the screening effect and the coal powder conveying, and the part cost of the device is further saved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the overall structure schematic view of the utility model;

[0018] Fig. 2 It is the connecting cover split structure schematic view of the utility model;

[0019] Fig. 3 It is the screen structure schematic view of the utility model;

[0020] Fig. 4 It is the exhaust cover structure schematic view of the utility model.

[0021] In the figure: 1, base; 101, support frame; 2, drive module; 201, motor reducer; 202, crankshaft; 203, connecting rod; 204, articulated block; 205, fan blade; 3, connecting cover; 301, top plate; 302, elastic plate; 401, rack; 402, baffle; 5, screen; 501, transmission roller; 502, gear; 503, support rod; 504, connecting rod; 505, conveying belt; 6, mounting cylinder; 601, spring; 7, exhaust cover; 701, material conveying pipe; 702, gas conveying pipe; 703, air suction cover. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figs. 1-4 In the embodiments of the utility model, a vibrating chute for screening in a coal preparation plant comprises a base 1, the upper surface of the base 1 is fixedly connected with a support frame 101, the upper surface of the support frame 101 is fixedly connected with a connecting cover 3, the support frame 101 and the connecting cover 3 are fixedly connected through a threaded assembly, the inner wall of the connecting cover 3 is fixedly connected with a rack 401, the inner bottom surface of the connecting cover 3 is embeddedly and movably connected with a screen 5, and the rear surface of the support frame 101 is threadedly connected with an exhaust cover 7.

[0024] The front surface of the base 1 is provided with a drive module 2, the drive module 2 comprises a motor reducer 201, a crankshaft 202 and a fan blade 205, the motor reducer 201 is fixedly connected to the front surface of the support frame 101, the crankshaft 202 is rotatably connected to the inside of the support frame 101, the output end of the motor reducer 201 is fixedly connected with the crankshaft 202, and the fan blade 205 is fixedly connected to the other end of the crankshaft 202.

[0025] Specifically, a through hole is formed in the upper surface of the base 1, the base 1 can be fixed on the ground in cooperation with the threaded assembly, the support frame 101 is used for mounting the connecting cover 3, the fixing between the connecting cover 3 and the base 1 is realized, the screen 5 is shaken in the connecting cover 3 and is used for screening coal blocks, the exhaust cover 7 can collect the coal powder between the bottom surface of the connecting cover 3 and the lower surface of the screen 5, the drive module 2 is started, the motor reducer 201 drives the fan blade 205 to rotate in cooperation with the crankshaft 202, the screen 5 is shaken at the same time, the screening effect is ensured, the power component is saved during coal powder conveying, and the part cost of the device is further saved.

[0026] Embodiment one

[0027] AsFigs. 1-4 As shown, the drive module 2 also includes a connecting rod 203 and a hinge block 204. The connecting rod 203 is nested and movably connected to the outer surface of the crankshaft 202, and the hinge block 204 is movably connected to the upper end of the connecting rod 203. A top rod 504 is fixedly connected to the lower surface of the screen 5, and the hinge block 204 and the top rod 504 are hinged together.

[0028] In this embodiment, when the crankshaft 202 rotates, the connecting rod 203, in conjunction with the hinge block 204, causes the top rod 504 to reciprocate, further causing the screen 5 to vibrate inside the connecting cover 3, which facilitates the screening of coal blocks.

[0029] like Figs. 1-4 As shown, a top plate 301 is fixedly connected to the inner surface of the connecting cover 3, a spring plate 302 is fixedly connected to the lower surface of the top plate 301, a support rod 503 is fixedly connected to the lower surface of the screen 5 near the four corners, and an installation cylinder 6 is threadedly connected to the lower surface of the connecting cover 3. A spring 601 is placed inside the installation cylinder 6.

[0030] In this embodiment, based on the shaking of the screen 5, the coal block comes into contact with the spring plate 302 when shaking, so that the coal block is not only subjected to the pushing force of the screen 5, but also the reaction force of the spring plate 302, thereby improving the efficiency of coal block screening. In addition, the support rod 503 is inserted into the mounting cylinder 6, and the mounting cylinder 6 guides the support rod 503, further guiding the shaking of the screen 5.

[0031] Example 2

[0032] Based on Example 1, in order to overcome the problem in Example 1 that it is inconvenient to transport the coal powder generated during screening while ensuring the shaking of screen 5.

[0033] like Figs. 1-4 As shown, a baffle 402 is fixedly connected to the outer surface of the rack 401, and two transmission rollers 501 are rotatably connected to the upper surface of the screen 5. A gear 502 is fixedly connected to the outer surface of one of the transmission rollers 501. The gear 502 and the rack 401 are meshed together, and a conveyor belt 505 is nested on the outer surface of the transmission roller 501.

[0034] In this embodiment, while the screen 5 is shaking, the gear 502 and the rack 401 mesh, so the gear 502 drives the transmission roller 501 to rotate, causing the inclined conveyor belt 505 to run. When running in the forward direction, it assists in feeding coal blocks, and when running in the reverse direction, it causes the stacked coal blocks to move backward, allowing only coal blocks smaller than or equal to the distance between the conveyor belt 505 and the screen 5 to pass through, thus reducing the screening pressure on the screen 5.

[0035] like Figs. 1-4As shown, the rear surface of the exhaust cover 7 is threadedly connected with the material conveying pipe 701, and the exhaust cover 7 is matched with the fan blade 205, the upper surface of the exhaust cover 7 is threadedly connected with the air conveying pipe 702, the output end of the air conveying pipe 702 is fixedly connected with the air suction cover 703, and the air suction cover 703 is embeddedly connected to the rear surface of the connecting cover 3.

[0036] In the embodiment, the fan blade 205 rotates to cooperate with the exhaust cover 7 and the material conveying pipe 701 to convey air outward, and the air conveying pipe 702 cooperates with the air suction cover 703 to suck the pulverized coal between the bottom surface of the connecting cover 3 and the lower surface of the screen 5, so that the pulverized coal is discharged from the air conveying pipe 702, thereby ensuring the screening effect and the pulverized coal conveying while saving the investment of the power assembly and further saving the part cost of the device.

[0037] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be regarded as limiting the claims to which they belong.

[0038] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A vibrating chute for screening in a coal preparation plant, comprising a base (1), the upper surface of the base (1) is fixedly connected with a support frame (101), the upper surface of the support frame (101) is fixedly connected with a connecting cover (3), the inner wall of the connecting cover (3) is fixedly connected with a rack (401), the inner bottom surface of the connecting cover (3) is embeddedly and movably connected with a screen (5), the rear surface of the support frame (101) is threadedly connected with an exhaust cover (7); characterized in that The front surface of the base (1) is provided with a driving module (2), the driving module (2) comprises: A motor reducer (201) is fixedly connected to the front surface of the support frame (101); A crankshaft (202) is rotatably connected to the inside of the support frame (101), the output end of the motor reducer (201) is fixedly connected with the crankshaft (202); A fan blade (205) is fixedly connected to the other end of the crankshaft (202).

2. The coal preparation plant screening vibratory chute according to claim 1, characterised in that, The driving module (2) further comprises: A connecting rod (203) is nestedly and movably connected to the outer surface of the crankshaft (202); An articulated block (204) is movably connected to the upper end of the connecting rod (203), the lower surface of the screen (5) is fixedly connected with a jacking rod (504), the articulated block (204) and the jacking rod (504) are articulated.

3. The coal preparation plant screening vibratory chute of claim 1, wherein, The inner surface of the connecting cover (3) is fixedly connected with a top plate (301), the lower surface of the top plate (301) is fixedly connected with a spring plate (302).

4. The coal preparation plant screening vibratory trough according to claim 1, characterized in that, The outer surface of the rack (401) is fixedly connected with a baffle (402), the upper surface of the screen (5) is rotatably connected with two transmission rollers (501), the outer surface of one of the transmission rollers (501) is fixedly connected with a gear (502), the gear (502) and the rack (401) are meshingly connected, the outer surface of the transmission roller (501) is nestedly connected with a transmission belt (505).

5. The coal preparation plant screening vibratory trough according to claim 1, characterized in that, The lower surface of the screen (5) is fixedly connected with a support rod (503) near the four corners, the lower surface of the connecting cover (3) is threadedly connected with a mounting cylinder (6), the inside of the mounting cylinder (6) is placed with a spring (601).

6. The coal preparation plant screening vibratory trough according to claim 1, characterized in that, The rear surface of the exhaust cover (7) is threadedly connected with a material conveying pipe (701), and the exhaust cover (7) and the fan blade (205) are matched.

7. The coal preparation plant screening vibratory trough according to claim 1, characterized in that, The upper surface of the exhaust cover (7) is threadedly connected with a gas conveying pipe (702), the output end of the gas conveying pipe (702) is fixedly connected with a suction cover (703), the suction cover (703) is embeddedly connected to the rear surface of the connecting cover (3).

Images