A vibrating grading coal screening machine

Abstract

The present invention relates to the technical field of coal block grading, specifically to a vibrating grading coal screening machine, comprising a bracket, a mesh screen body is provided on one side of the bracket, a vibration generator is provided on one side of the mesh screen body, a feed hopper is provided on the bracket, and further comprising an interleaving plate, two of the interleaving plates are provided, and both of the interleaving plates are provided on one side of the mesh screen body; a displacement mechanism is provided on the bracket; a trigger mechanism is provided between the bracket and the displacement mechanism; this vibrating grading coal screening machine is different from the prior art. When in use, the staff uses the trigger mechanism to trigger the displacement mechanism to operate when feeding from the feed hopper, and controls the two interleaving plates to perform alternating back and forth displacement, thereby interleaving and moving the coal blocks falling from the mesh screen body, thereby avoiding a large number of coal blocks from piling up and entangling each other in the early stage of feeding, and improving the screening uniformity.

Description

Technical Field

[0001] The invention relates to the technical field of coal block classification, in particular to a vibration classification coal screening machine. Background Art

[0002] my country has abundant coal resources with a wide range of uses. Coal generally needs to be screened during processing, and the coal blocks are graded and screened according to their size so that they can be applied to different usage scenarios. During the processing, vibrating coal screening machines are often used to grade the coal blocks. The vibrating coal screening machine mainly includes a bracket, a feed hopper, a motor, and a mesh screen body. After the coal blocks are put into the feed hopper by a forklift, the motor uses a vibrator to vibrate, driving the mesh screen body to vibrate back and forth, thereby grading and screening the coal blocks.

[0003] In the existing vibrating coal screening machine, the amount of coal in the feed hopper is large in the early stage of feeding, and the coal blocks fall quickly. A large number of coal blocks are easily piled up and entangled with each other, and the surface coal blocks are not easy to be screened during the vibration process, resulting in low screening uniformity. For this reason, we propose a vibrating grading coal screening machine. Summary of the Invention

[0004] A technical problem to be solved by this application is: how to avoid a large number of coal blocks from piling up and entangling each other in the early stage of feeding, and improve screening uniformity.

[0005] To solve the above technical problems, the present application provides a vibrating grading coal screening machine, comprising a bracket, a mesh screen body provided on one side of the bracket, a vibration generator provided on one side of the mesh screen body, a feed hopper provided on the bracket, and further comprising:

[0006] Insertion plates, two of which are provided, and both are provided on one side of the mesh screen body;

[0007] A displacement mechanism, used for controlling the two insertion plates to move back and forth, inserting and moving the coal blocks falling from the mesh screen body, and provided on the bracket;

[0008] The trigger mechanism is used to trigger the displacement mechanism to operate when the feed hopper is feeding, and to stop the displacement mechanism from operating when the feeding is finished, and is arranged between the bracket and the displacement mechanism.

[0009] In some embodiments, the displacement mechanism includes two tripods provided on the bracket, a placement frame is provided between the two tripods, and a mounting seat is provided on the placement frame;

[0010] The mounting seat is provided with a reciprocating assembly for driving the two interleaving plates to perform alternating reciprocating movement;

[0011] Two guide assemblies are provided on the mounting seat for guiding and supporting the displacement of the two insertion plates respectively.

[0012] In some embodiments, the reciprocating assembly includes a rotating shaft rotatably set on a mounting seat, an alternating gear is set on the rotating shaft, racks are set on both sides of the alternating gears, connecting rods are set on the two racks, connecting strips are set on the two connecting rods, and the two connecting strips are respectively connected to two interlaced plates, an output shaft is rotatably set on the mounting seat, the output shaft is rotatably connected to the placement frame, a rotating plate is set on the output shaft, a slot seat is set on one of the racks, a protruding portion is set on the rotating plate, and the protruding portion matches the slotted portion of the slot seat.

[0013] In some embodiments, the guide assembly includes a U-shaped groove arranged on the mounting seat, two support rods are arranged on the rack, a slide is arranged on the support rod, two guide rods are arranged on the insertion plate, and the guide rods are slidably connected to the placement frame.

[0014] In some embodiments, the trigger mechanism includes a base provided on a bracket, an input shaft is rotatably provided on the base, a power shaft and an input shaft of the vibration generator are both provided with transmission gears, and a crawler is provided between the two transmission gears;

[0015] The input shaft is provided with a switching component for controlling the power output of the input shaft and switching the rotation state and the stop rotation state of the output shaft.

[0016] In some embodiments, the switching assembly includes a coupling seat provided at one end of the input shaft, a plurality of active inclined blocks are provided inside the coupling seat, a sliding seat is slidably provided on the output shaft, and a plurality of passive inclined blocks are provided on the sliding seat;

[0017] A limiting member is provided on the base for limiting the initial position of the slide and the passive inclined block;

[0018] The feed hopper is provided with a transmission member for driving the sliding seat to move and engage with the connecting seat when the feed hopper is feeding.

[0019] In some embodiments, the limiting member includes a fixed cylinder arranged on the base, a displacement rod is arranged in the fixed cylinder, a push plate is arranged on the displacement rod, a spring is sleeved on the displacement rod, and an arc plate is arranged at one end of the displacement rod, and the arc plate is in contact with the sliding seat.

[0020] In some embodiments, the transmission member includes a baffle rotatably arranged on the feed hopper, a torsion spring is provided at the rotating connection portion between the baffle and the feed hopper, a wire is provided on the baffle, and the wire is connected to the arc plate after passing through the base.

[0021] In some embodiments, the wire drawing material is nylon steel wire.

[0022] In some embodiments, a connecting seat is provided on the mounting seat, the rotating shaft is rotatably connected to the connecting seat, a coil spring is provided on the connecting seat, one end of the coil spring is connected to the inner wall of the connecting seat, and the other end is connected to the rotating shaft.

[0023] The present invention has at least the following beneficial effects:

[0024] Different from the existing technology, when using this vibrating grading coal screening machine, the staff uses the trigger mechanism to trigger the displacement mechanism to operate when feeding in the feed hopper, and controls the two insertion plates to move back and forth alternately, and insert and move the coal blocks falling in the mesh screen body, so as to avoid a large number of coal blocks from piling up and entangling each other in the early stage of feeding, thereby improving the screening uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 Schematic diagram of the local cross-section structure;

[0027] Figure 3 This is a schematic structural diagram of the insertion plate, displacement mechanism, and trigger mechanism of the present invention;

[0028] Figure 4 Schematic diagram of the displacement mechanism structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the reciprocating assembly and the guide assembly of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the inserting plate, connecting rod, connecting strip and guide rod of the present invention;

[0031] Figure 7 This is a schematic diagram of the trigger mechanism structure of the present invention;

[0032] Figure 8 For the present invention Figure 7 Another structural diagram;

[0033] Figure 9 For the present invention Figure 8 Schematic diagram of the local cross-section structure;

[0034] Figure 10 For the present invention Figure 9 Schematic diagram of the local cross-section structure;

[0035] Figure 11 This is a schematic diagram of the partial cross-sectional structure of the limiter of the present invention;

[0036] Figure 12 This is a schematic diagram of the feed hopper and baffle structure of the present invention;

[0037] Figure 13 For the present invention Figure 12 Schematic diagram of the enlarged structure of area A;

[0038] Figure 14 This is a schematic diagram of the connecting seat and coil spring structure in Example 2 of the present invention.

[0039] In the figure: 1. bracket; 2. mesh screen body; 3. vibration generator; 4. feed hopper; 5. interleaving plate; 6. displacement mechanism; 61. tripod; 62. placement frame; 63. mounting base; 7. trigger mechanism; 71. base; 72. input shaft; 73. transmission gear; 74. crawler; 8. reciprocating assembly; 81. rotating shaft; 82. alternating gear; 83. rack; 84. connecting rod; 85. connecting bar; 86. output shaft; 87. rotating plate; 88. slot seat; 9 , guide assembly; 91, U-shaped groove; 92, support rod; 93, slide; 94, guide rod; 10, switching assembly; 101, connecting seat; 102, active inclined block; 103, slide; 104, passive inclined block; 11, limiter; 111, fixing cylinder; 112, displacement rod; 113, push plate; 114, spring; 115, arc plate; 12, transmission part; 121, baffle; 122, torsion spring; 123, wire drawing; 13, connecting seat; 14, coil spring. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Example 1

[0042] See also Figure 1-13 , the present invention provides a technical solution:

[0043] A vibrating coal grading screen includes a support 1, a screen body 2 is provided on one side of the support 1, a plurality of screens with different mesh sizes are provided on the screen body 2, a vibration generator 3 is provided on one side of the screen body 2, and the vibration generator 3 drives the screen body 2 to vibrate back and forth by a motor using a vibrator to excite, thereby screening the coal blocks. A feed hopper 4 is provided on the support 1, and further includes:

[0044] There are two interpenetrating plates 5, both of which are arranged on one side of the mesh screen body 2;

[0045] The displacement mechanism 6 is used to control the two insertion plates 5 to move back and forth, inserting and moving the coal blocks falling from the screen body 2, and is arranged on the bracket 1;

[0046] The trigger mechanism 7 is used to trigger the displacement mechanism 6 to operate when the feed hopper 4 is feeding, and to stop the displacement mechanism 6 from operating when the feeding is finished, and is arranged between the bracket 1 and the displacement mechanism 6.

[0047] The displacement mechanism 6 includes two tripods 61 arranged on the bracket 1, a placement frame 62 is arranged between the two tripods 61, and a mounting seat 63 is arranged on the placement frame 62; the tripod 61 can be fixed to the bracket 1 by bolts, and the tripod 61 is used to connect and fix the placement frame 62 and the mounting seat 63 to enhance the structural stability.

[0048] A reciprocating assembly 8 is provided on the mounting seat 63 for driving the two interlaced plates 5 to perform alternating reciprocating displacement; the reciprocating assembly 8 includes a rotating shaft 81 rotatably provided on the mounting seat 63, an alternating gear 82 is provided on the rotating shaft 81, racks 83 are provided on both sides of the alternating gear 82, connecting rods 84 are provided on the two racks 83, connecting rods 85 are provided on the two connecting rods 84, and the two connecting bars 85 are connected to the two interlaced plates 5 respectively. An output shaft 86 is rotatably provided on the mounting seat 63, the output shaft 86 is rotatably connected to the placement frame 62, a rotating plate 87 is provided on the output shaft 86, and one of the racks A slot seat 88 is provided on 83, and a raised portion is provided on the rotating plate 87, and the raised portion matches the slotted portion of the slot seat 88; the output shaft 86 drives the rotating plate 87 to rotate, and the raised portion of the rotating plate 87 performs a circular motion, which drives the corresponding rack 83 to perform a linear reciprocating motion through the slot seat 88. Under the action of the alternating gear 82, the two racks 83 respectively drive the two connecting rods 84, the connecting bar 85, and the interlaced plate 5 to perform alternating linear reciprocating motion, interweaving and moving the falling coal blocks, slowing down the coal blocks to a certain extent, separating the coal blocks that are piled up and entrained with each other to a certain extent, and increasing the screening uniformity.

[0049] Two guide assemblies 9 are provided on the mounting seat 63, which are used to guide and support the displacement of the two insertion plates 5 respectively; the guide assembly 9 includes a U-shaped groove 91 provided on the mounting seat 63, two support rods 92 are provided on the rack 83, and a slide 93 is provided on the support rod 92. Two guide rods 94 are provided on the insertion plate 5, and the guide rods 94 are slidably connected to the placement frame 62; the U-shaped groove 91, the support rod 92, and the slide 93 support and guide the displacement of the rack 83, and the guide rod 94 guides the displacement of the insertion plate 5; a ball bearing can be added between the slide 93 and the U-shaped groove 91 to convert sliding friction into rolling friction, thereby reducing the friction resistance encountered by the rack 83 during displacement.

[0050] The trigger mechanism 7 includes a base 71 arranged on the bracket 1, and an input shaft 72 is rotatably arranged on the base 71. The power shaft of the vibration generator 3 and the input shaft 72 are both provided with transmission gears 73, and a track 74 is provided between the two transmission gears 73; the power shaft of the motor drives the input shaft 72 to rotate through the track 74.

[0051] A switching assembly 10 is provided on the input shaft 72 for controlling the power output of the input shaft 72 and switching the rotation and stop rotation states of the output shaft 86; the switching assembly 10 includes a connecting seat 101 provided at one end of the input shaft 72, a plurality of active inclined blocks 102 are provided inside the connecting seat 101, a slide 103 is slidingly provided on the output shaft 86, and a plurality of passive inclined blocks 104 are provided on the slide 103; in the initial position, the slide 103 is disengaged from the connecting seat 101, and the input shaft 72 drives the connecting seat 101 and the active inclined block 102 to rotate, and the active inclined block 102 will not drive the passive inclined block 104, the slide 103, and the output shaft 86 to rotate; when the slide 103 is engaged with the connecting seat 101, the input shaft 72 drives the active inclined block 102 of the connecting seat 101 to rotate, and the active inclined block 102 will drive the passive inclined block 104, the slide 103, and the output shaft 86 to rotate.

[0052] A limiting member 11 is provided on the base 71, which is used to limit the initial position of the slide 103 and the passive inclined block 104; the limiting member 11 includes a fixed cylinder 111 provided on the base 71, a displacement rod 112 is provided in the fixed cylinder 111, a push plate 113 is provided on the displacement rod 112, a spring 114 is sleeved on the displacement rod 112, and an arc plate 115 is provided at one end of the displacement rod 112, and the arc plate 115 is in contact with the slide 103; the spring 114 limits the initial position of the displacement rod 112 and the arc plate 115, and the arc plate 115 limits the initial position of the slide 103.

[0053] The feed hopper 4 is provided with a transmission member 12, which is used to drive the slide 103 to move and engage with the connecting seat 101 when the feed hopper 4 is feeding; the transmission member 12 includes a baffle 121 rotatably set on the feed hopper 4, and a torsion spring 122 is provided at the rotation connection portion between the baffle 121 and the feed hopper 4. A wire drawing 123 is provided on the baffle 121, and the wire drawing 123 passes through the base 71 and is connected to the arc plate 115; when feeding, the coal blocks fall from the feed hopper 4, pushing the baffle 121 to rotate, and driving the arc plate through the wire drawing 123 115 is displaced, and the arc plate 115 drives the slide 103 to be displaced and engages with the connecting seat 101; when the feeding is finished, the coal blocks in the uppermost layer of the screen body 2 are less, and the arc plate 115 drives the slide 103 to be displaced back to the initial position, and will not drive the insertion plate 5 to move back and forth through the transmission. The motor continues to rotate. At this time, the output of the motor power shaft drives the screen body 2 to complete the subsequent multi-stage screening of the coal blocks through its own vibration. When the next feeding is done, the insertion plate 5 reciprocates again to insert and move the coal blocks in the uppermost layer.

[0054] The material of drawing wire 123 is nylon steel wire; nylon steel wire has the flexibility of nylon and the hardness of steel wire, and also has excellent wear resistance, mechanical strength and corrosion resistance. Its excellent performance ensures that it has a long service life.

[0055] When in use, the power shaft of the motor drives the input shaft 72 to rotate through the crawler 74; when feeding, the coal blocks fall from the feed hopper 4, pushing the baffle 121 to rotate, and driving the arc plate 115 to move through the wire drawing 123. The arc plate 115 drives the slide 103 to move and engage with the connecting seat 101. At this time, the input shaft 72 drives the connecting seat 101 and the active inclined block 102 to rotate, and the active inclined block 102 will drive the passive inclined block 104, the slide 103, and the output shaft 86 to rotate; in this process, the output shaft 86 drives the rotating plate 87 to rotate, and the raised part of the rotating plate 87 performs a circular motion, and drives the corresponding rack 83 to perform a linear reciprocating motion through the groove seat 88. Under the action of the alternating gear 82, the two racks 83 respectively drive the two connecting rods 84, the connecting bar 85, and the interlaced plate 5 to perform alternating linear reciprocating motion, interweaving and shifting the falling coal blocks, slowing down the coal blocks to a certain extent, separating the coal blocks piled up and entrained with each other, and improving the screening uniformity.

[0056] Example 2

[0057] See also Figure 14 , the present invention provides a technical solution:

[0058] Different from Example 1, a connecting seat 13 is provided on the mounting seat 63, and the rotating shaft 81 is rotatably connected to the connecting seat 13. A coil spring 14 is provided on the connecting seat 13, and one end of the coil spring 14 is connected to the inner wall of the connecting seat 13, and the other end is connected to the rotating shaft 81; the coil spring 14 limits the initial position of the rotating shaft 81, the alternating gear 82, and the rack 83, thereby limiting the initial position of the interleaving plate 5; when the feeding is finished, the interleaving plate 5 maintains a certain distance from the uppermost screen of the mesh screen body 2 to avoid blocking the subsequent falling coal blocks.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A vibrating grading coal screening machine, comprising a support (1), a mesh screen body (2) provided on one side of the support (1), a vibration generator (3) provided on one side of the mesh screen body (2), a feed hopper (4) provided on the support (1), characterized in that: Also included are: A penetration plate (5), wherein two penetration plates (5) are provided, and both penetration plates (5) are provided on one side of the mesh screen body (2); A displacement mechanism (6) is used to control the two insertion plates (5) to move back and forth, inserting and moving the coal blocks falling from the mesh screen body (2), and is arranged on the bracket (1); A trigger mechanism (7) is used to trigger the displacement mechanism (6) to operate when the feed hopper (4) is feeding, and to stop the displacement mechanism (6) from operating when feeding is finished, and is arranged between the bracket (1) and the displacement mechanism (6); The displacement mechanism (6) comprises two tripods (61) arranged on the bracket (1), a placement frame (62) is arranged between the two tripods (61), and a mounting seat (63) is arranged on the placement frame (62); A reciprocating assembly (8) is provided on the mounting seat (63) for driving the two interpenetrating plates (5) to perform alternating reciprocating displacement; the reciprocating assembly (8) includes a rotating shaft (81) rotatably provided on the mounting seat (63), an alternating gear (82) is provided on the rotating shaft (81), racks (83) are provided on both sides of the alternating gear (82), connecting rods (84) are provided on the two racks (83), connecting bars (85) are provided on the two connecting rods (84), and the two connecting bars (85) are respectively connected to the two interpenetrating plates (5); an output shaft (86) is rotatably provided on the mounting seat (63), the output shaft (86) is rotatably connected to the placement frame (62), a rotating plate (87) is provided on the output shaft (86), a slot seat (88) is provided on one of the racks (83), and a protruding portion is provided on the rotating plate (87), and the protruding portion matches the slotted portion of the slot seat (88); The trigger mechanism (7) includes a base (71) arranged on the bracket (1), an input shaft (72) is rotatably arranged on the base (71), a transmission gear (73) is arranged on the power shaft and the input shaft (72) of the vibration generator (3), and a crawler (74) is arranged between the two transmission gears (73); The input shaft (72) is provided with a switching assembly (10) for controlling the power output of the input shaft (72) and switching the rotation state and the stop rotation state of the output shaft (86); The switching assembly (10) includes a connecting seat (101) arranged at one end of the input shaft (72), a plurality of active inclined blocks (102) are arranged inside the connecting seat (101), a sliding seat (103) is slidably arranged on the output shaft (86), and a plurality of passive inclined blocks (104) are arranged on the sliding seat (103); A limiting member (11) is provided on the base (71) for limiting the initial position of the slide (103) and the passive inclined block (104); The feed hopper (4) is provided with a transmission member (12) for driving the slide seat (103) to move and engage with the connecting seat (101) when the feed hopper (4) feeds materials.

2. The vibration classification coal screening machine according to claim 1, characterized in that: Two guide assemblies (9) are provided on the mounting seat (63) for guiding and supporting the displacement of the two insertion plates (5) respectively.

3. The vibration classification coal screening machine according to claim 2, characterized in that: The guide assembly (9) includes a U-shaped groove (91) provided on the mounting seat (63), two support rods (92) are provided on the rack (83), a slide (93) is provided on the support rod (92), and two guide rods (94) are provided on the insertion plate (5), and the guide rods (94) are slidably connected to the placement frame (62).

4. The vibration classification coal screening machine according to claim 1, characterized in that: The limiting member (11) comprises a fixed cylinder (111) arranged on the base (71), a displacement rod (112) is arranged in the fixed cylinder (111), a push piece (113) is arranged on the displacement rod (112), a spring (114) is sleeved on the displacement rod (112), and an arc plate (115) is arranged at one end of the displacement rod (112), and the arc plate (115) is in contact with the slide seat (103).

5. The vibration classification coal screening machine according to claim 4, characterized in that: The transmission member (12) includes a baffle (121) rotatably arranged on the feed hopper (4), a torsion spring (122) is provided at a rotational connection portion between the baffle (121) and the feed hopper (4), a wire drawing (123) is provided on the baffle (121), and the wire drawing (123) passes through the base (71) and is connected to the arc plate (115).

6. The vibration classification coal screening machine according to claim 5, characterized in that: The wire drawing (123) is made of nylon steel wire.

7. The vibration classification coal screening machine according to claim 6, characterized in that: A connecting seat (13) is provided on the mounting seat (63), the rotating shaft (81) is rotatably connected to the connecting seat (13), and a coil spring (14) is provided on the connecting seat (13), one end of the coil spring (14) is connected to the inner wall of the connecting seat (13), and the other end is connected to the rotating shaft (81).

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