An eccentric connecting rod type linear grading screen device

Abstract

The utility model discloses an eccentric connecting rod type linear grading screen device, which relates to the technical field of linear multi-stage screening equipment. The utility model includes a base, a screening box is fixedly connected to the top of the base, and a bracket is fixedly connected to one side of the inner cavity of the screening box; a replacement component is arranged at the rear side of the inner cavity of the screening box, and the replacement component includes a driving motor, and the driving motor is fixed to the rear end of the top of the screening box, and a lead screw is fixedly connected to the output end of the driving motor. The utility model can drive the shaking connecting rod to rotate through the eccentric wheel through the drive of the three-phase asynchronous motor, thereby driving the screen frame to shake back and forth, and at the same time, the connecting plate on the back of the cross plate drives the bottom screen frame to shake back and forth, so as to achieve the purpose of multi-stage screening, and the sliding sleeve is driven to move through the lead screw through the drive motor, thereby driving the cylinder to move, and the push plate is driven by the cylinder to push the screen plate that needs to be replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of linear multi-level screening equipment, in particular to an eccentric connecting rod type linear grading screen device. Background Art

[0002] Eccentric connecting rod type linear grading screen device: It is a device used for screening and grading of granular materials. It includes an eccentric connecting rod vibrator, which screens the granular materials on the screen by vibration. The characteristics of this device are that the movement trajectory of the vibrator is straight and it has an eccentric connecting rod, which makes the vibration have a certain directionality and amplitude change, thereby realizing effective grading of granular materials. This device is usually used in the screening process of granular materials in mining, building materials, chemical industry and other industries.

[0003] In the eccentric connecting rod type linear grading screen device in the prior art, when replacing the screen plate, especially when replacing the bottom layer, the upper layer needs to be removed first before replacing the lower layer of the screen plate, which requires a large amount of labor and increases the labor time. At the same time, the existing grading screen requires multiple vibration motors to work from multiple angles to bring forward and upward exciting force during screening, resulting in poor screening effect and affecting effective grading.

[0004] To this end, we provide an eccentric connecting rod type linear grading screen device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an eccentric connecting rod type linear grading screen device, which solves the problems of the eccentric connecting rod type linear grading screen device in the prior art, such as the inconvenience of replacing the screen plate and the poor screening effect caused by the vibration of the screening machine driven by multiple vibration motors, through the coordinated arrangement of the replacement component and the screening component.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is an eccentric connecting rod type linear grading screen device, comprising a base, a sieving box is fixedly connected to the top of the base, and a bracket is fixedly connected to one side of the inner cavity of the sieving box;

[0008] A replacement assembly is provided at the rear side of the inner cavity of the sub-screening box, and the replacement assembly includes a driving motor, the driving motor is fixed to the rear end of the top of the sub-screening box, the output end of the driving motor is fixedly connected to a lead screw, the surface of the lead screw is threadedly connected to a sliding sleeve, the front side of the sliding sleeve is fixedly connected to a limit plate, both sides of the front side of the limit plate are fixedly connected to a cylinder, and one end of the cylinder is fixedly connected to a push plate;

[0009] A sub-screening assembly is provided in the inner cavity of the bracket, and the sub-screening assembly includes a transverse plate, which is fixed to the front end and the rear end of the top of the bracket. The back of the transverse plate is movably connected to a connecting plate through a bearing, and the top and bottom of the back of the connecting plate are movably connected to a screen frame, and the inner cavity of the screen frame is slidably connected to the screen plate.

[0010] The utility model is further configured that both sides of the front side of the screen frame are fixedly connected with top blocks, one side of the top block is fixedly connected with a spring rod, one end of the spring rod is fixedly connected with an inclined block, and the front side of the inclined block is fixedly connected with a toggle block.

[0011] The utility model is further configured as follows: a support plate is fixedly connected to the bottom of one side of the inner cavity of the screening box, a three-phase asynchronous motor is fixedly connected to the top of the support plate, an eccentric wheel is fixedly connected to the output end of the three-phase asynchronous motor, a shaking connecting rod is movably connected to one side of the back of the eccentric wheel, and one end of the shaking connecting rod is movably connected to one side of the screen frame.

[0012] The utility model is further configured that a slide groove is provided on the front side of the inner cavity of the screen frame, the surface of the screen plate is slidably connected to the inner cavity of the slide groove, and the back side of the inclined block is slidably connected to one side of the inner cavity of the slide groove.

[0013] The utility model is further configured that a leakage groove is opened at the bottom of the inner cavity of the sieve frame, a cross bar is fixedly connected to the inner cavity of the leakage groove, the surface of the cross bar is movably connected to the bottom of the sieve plate, and pushing grooves are opened on both sides of the back of the inner cavity of the sieve frame.

[0014] The utility model is further configured that a limiting rod is fixedly connected to the rear end of one side of the inner cavity of the sub-screening box, and two sides of the inner cavity of the limiting plate are respectively slidably connected to the surfaces of the two limiting rods.

[0015] The utility model is further configured that a feed port is provided on one side of the top of the inner cavity of the screening box, and the inner cavity of the feed port extends to the outside of the screening box.

[0016] The utility model is further configured that the front side of the screening box is movably connected with a box door through a hinge, and a handle is fixedly connected to one side of the front side of the box door.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model can drive the shaking connecting rod to rotate through the eccentric wheel through the three-phase asynchronous motor, thereby driving the screen frame to shake back and forth, and at the same time driving the bottom screen frame to shake back and forth through the connecting plate on the back of the cross plate, so as to achieve the purpose of multi-stage screening, and through the drive motor, the sliding sleeve is driven to move through the lead screw, thereby driving the cylinder to move, and the push plate is driven by the cylinder to push the screen plate that needs to be replaced.

[0019] 2. The utility model can support the cylinder by setting a limit plate, and at the same time limit the movement of the sliding sleeve on the surface of the screw, so as to achieve the purpose of stabilizing the movement of the cylinder. By setting a connecting plate, the two sieve plates can be movably connected to the top and bottom of the inner cavity of the bracket respectively, so as to drive the two sieve plates to screen at the same time. By setting a screen frame, the sieve plate can be placed inside to drive the sieve plate to screen.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural stereogram of an eccentric connecting rod type linear grading screen device.

[0023] Figure 2 It is a cross-sectional view of a screening box in an eccentric connecting rod type linear grading screen device.

[0024] Figure 3 It is a schematic diagram of a bracket in an eccentric connecting rod type linear grading screen device.

[0025] Figure 4 It is a schematic diagram of the cylinder and push plate in an eccentric connecting rod type linear grading screen device.

[0026] Figure 5 It is a schematic diagram of a three-phase asynchronous motor in an eccentric connecting rod type linear grading screen device.

[0027] Figure 6 for Figure 3 A is an enlarged view of the middle image.

[0028] In the attached figure: 1. base; 2. screening box; 3. bracket; 4. driving motor; 5. screw; 6. sliding sleeve; 7. limit plate; 8. cylinder; 9. push plate; 10. cross plate; 11. connecting plate; 12. screen frame; 13. screen plate; 14. top block; 15. spring rod; 16. inclined block; 18. support plate; 19. three-phase asynchronous motor; 20. eccentric wheel; 21. shaking connecting rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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 ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0031] See also Figure 1-6 The utility model is an eccentric connecting rod type linear grading screen device, comprising a base 1, a screening box 2 is fixedly connected to the top of the base 1, and a bracket 3 is fixedly connected to one side of the inner cavity of the screening box 2;

[0032] A replacement assembly is arranged at the rear side of the inner cavity of the sub-screening box 2, and the replacement assembly includes a driving motor 4, which is fixed to the top rear end of the sub-screening box 2, and a lead screw 5 is fixedly connected to the output end of the driving motor 4, and a sliding sleeve 6 is threadedly connected to the surface of the lead screw 5, and a limit plate 7 is fixedly connected to the front of the sliding sleeve 6, and a cylinder 8 is fixedly connected to both sides of the front of the limit plate 7, and a push plate 9 is fixedly connected to one end of the cylinder 8;

[0033] A sub-screening assembly is arranged in the inner cavity of the bracket 3, and the sub-screening assembly includes a transverse plate 10, which is fixed to the front end and the rear end of the top of the bracket 3. The back of the transverse plate 10 is movably connected to a connecting plate 11 through a bearing, and the top and the bottom of the back of the connecting plate 11 are movably connected to a screen frame 12, and the inner cavity of the screen frame 12 is slidably connected to a screen plate 13.

[0034] Specifically: the bracket 3 is fixed on the left side of the inner cavity of the screening box 2, and two grading screen plates 13 are respectively arranged at the bottom and top of the inner cavity of the bracket 3. The holes of the top screen plate 13 are larger than the holes of the bottom screen plate 13. One end of the lead screw 5 is fixed to the output end of the driving motor 4, and the other end is rotatably connected to the rear end of one side of the bottom of the inner cavity of the screening box 2 through a bearing. The two cylinders 8 respectively drive the two pushers to move so as to drive the screen plates 13 to move. The top and bottom of the back side of the connecting plate 11 are respectively movably connected to one side of the two screen plates 13. The bottom of the support plate 18 is fixed to the front end on the right side of the bottom of the inner cavity of the screening box 2, and the support block at the bottom of the support plate 18 is not shown in the figure. Specific embodiment 2

[0036] See also Figure 1-6On the basis of the specific embodiment 1, both sides of the front of the screen frame 12 are fixedly connected with top blocks 14, one side of the top block 14 is fixedly connected with a spring rod 15, one end of the spring rod 15 is fixedly connected with an inclined block 16, and the front of the inclined block 16 is fixedly connected with a toggle block, a support plate 18 is fixedly connected to the bottom of one side of the inner cavity of the sub-screen box 2, a three-phase asynchronous motor 19 is fixedly connected to the top of the support plate 18, an eccentric wheel 20 is fixedly connected to the output end of the three-phase asynchronous motor 19, and a shaking connecting rod 21 is movably connected to one side of the back of the eccentric wheel 20, one end of the shaking connecting rod 21 is movably connected to one side of the screen frame 12, a slide groove is opened on the front side of the inner cavity of the screen frame 12, the surface of the sieve plate 13 is slidably connected to the inner cavity of the slide groove, and the back of the inclined block 16 is slidably connected to one side of the inner cavity of the slide groove.

[0037] Specifically: both sides of the front of the two screen frames 12 are fixedly connected with top blocks 14, and the inclined block 16 allows the sieve plate 13 to be separated from the inner cavity of the sieve frame 12 when the cylinder 8 pushes it. When replacing a new sieve plate 13, it is necessary to manually push the toggle block to move the new sieve plate 13 into the sieve frame 12 to prevent the sieve plate 13 from being separated from the inner cavity of the sieve frame 12 during screening. The three-phase asynchronous motor 19 drives the shaking connecting rod 21 to shake to achieve a better screening effect. One end of the shaking connecting rod 21 is movably connected to one side of the back of the eccentric wheel 20, and the other end is movably connected to one side of the top sieve frame 12. The slide groove separates the sieve plate 13 inside the sieve frame 12 from the sieve frame 12. Specific embodiment three

[0039] See also Figure 1-6 On the basis of the first and second specific embodiments, a leakage groove is provided at the bottom of the inner cavity of the screen frame 12, a cross bar is fixedly connected to the inner cavity of the leakage groove, the surface of the cross bar is movably connected to the bottom of the screen plate 13, and pushing grooves are provided on both sides of the back of the inner cavity of the screen frame 12. A limiting rod is fixedly connected to the rear end of one side of the inner cavity of the sub-screening box 2, and both sides of the inner cavity of the limiting plate 7 are respectively slidably connected to the surfaces of the two limiting rods. A feed port is provided on one side of the top of the inner cavity of the sub-screening box 2, and the inner cavity of the feed port extends to the outside of the sub-screening box 2. The front of the sub-screening box 2 is movably connected to a box door through a hinge, and a handle is fixedly connected to one side of the front of the box door.

[0040] Specifically: the leakage hole allows the material smaller than the hole of the sieve plate 13 to fall to the surface of the sieve plate 13 of the next level, so as to achieve grading and screening. The cross bar supports the sieve plate 13, and the push groove enables the push plate 9 to be pushed into the sieve frame 12. The two limit rods are slidably connected to the two sides of the inner cavity of the limit plate 7 respectively. The limit rods can limit the limit plate 7 and the sliding sleeve 6. The feed port is located directly above the bracket 3, so that the material can fall to the surface of the top sieve plate 13. The sieve plate 13 can be replaced by opening the box door, and the graded and screened raw materials can be collected.

[0041] The working principle of the utility model is as follows: when the eccentric connecting rod type grading screen device is needed, the material is first introduced into the surface of the sieve plate 13 at the top of the bracket 3 in the grading screen box 2 through the feed port, and then the three-phase asynchronous motor 19 is started, the three-phase asynchronous motor 19 drives the eccentric wheel 20 to rotate, the eccentric wheel 20 drives the shaking connecting rod 21 to rotate, the shaking connecting rod 21 drives the sieve plate 13 at the top of the inner cavity of the bracket 3 to shake back and forth, the top sieve plate 13 drives the connecting plate 11 to move, and the connecting plate 11 drives the sieve plate 13 at the bottom of the inner cavity of the bracket 3 to shake, so as to grade and screen the materials on the surfaces of the two sieve plates 13. When the sieve plate 13 needs to be replaced, the driving motor 4 is first started to drive The motor 4 drives the lead screw 5 to rotate, the lead screw 5 drives the sliding sleeve 6 to move, the sliding sleeve 6 drives the limit plate 7 to move, and the limit plate 7 drives the cylinder 8 to move, so that the push rod at the front end of the cylinder 8 is flush with the corresponding push groove of the screen frame 12, and then the cylinder 8 is started by the external controller, the cylinder 8 drives the push plate 9, the push plate 9 pushes the sieve plate 13, the sieve plate 13 squeezes the inclined block 16, the inclined block 16 squeezes the spring rod 15, so that the sieve plate 13 is pushed out from the inner cavity of the sieve frame 12 to facilitate the replacement of the sieve plate 13, finally, the toggle block is driven to drive the inclined block 16 to move, and the sieve plate 13 to be replaced is pushed into the sieve frame 12, and one end of the spring rod 15 automatically rebounds, so that the inclined block 16 limits the sieve plate 13 in the sieve frame 12.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An eccentric connecting rod type linear grading screen device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a screening box (2), and one side of the inner cavity of the screening box (2) is fixedly connected to a bracket (3); A replacement component is arranged at the rear side of the inner cavity of the sub-screening box (2), and the replacement component comprises a drive motor (4), the drive motor (4) is fixed to the top rear end of the sub-screening box (2), the output end of the drive motor (4) is fixedly connected to a lead screw (5), the surface of the lead screw (5) is threadedly connected to a sliding sleeve (6), the front side of the sliding sleeve (6) is fixedly connected to a limit plate (7), both sides of the front side of the limit plate (7) are fixedly connected to a cylinder (8), and one end of the cylinder (8) is fixedly connected to a push plate (9); The inner cavity of the support (3) is provided with a screening assembly, and the screening assembly comprises a transverse plate (10), the transverse plate (10) is fixed to the front end and the rear end of the top of the support (3), the back of the transverse plate (10) is movably connected to a connecting plate (11) via a bearing, the top and the bottom of the back of the connecting plate (11) are movably connected to a screen frame (12), and the inner cavity of the screen frame (12) is slidably connected to a screen plate (13).

2. The eccentric connecting rod type linear grading screen device according to claim 1, characterized in that: Both sides of the front of the screen frame (12) are fixedly connected to top blocks (14), one side of the top block (14) is fixedly connected to a spring rod (15), one end of the spring rod (15) is fixedly connected to an inclined block (16), and the front of the inclined block (16) is fixedly connected to a toggle block.

3. The eccentric connecting rod type linear grading screen device according to claim 1, characterized in that: A support plate (18) is fixedly connected to the bottom of one side of the inner cavity of the screening box (2), a three-phase asynchronous motor (19) is fixedly connected to the top of the support plate (18), an eccentric wheel (20) is fixedly connected to the output end of the three-phase asynchronous motor (19), a shaking connecting rod (21) is movably connected to the back side of the eccentric wheel (20), and one end of the shaking connecting rod (21) is movably connected to one side of the screen frame (12).

4. The eccentric connecting rod type linear grading screen device according to claim 2, characterized in that: A slide groove is provided on the front side of the inner cavity of the screen frame (12), the surface of the screen plate (13) is slidably connected to the inner cavity of the slide groove, and the back side of the inclined block (16) is slidably connected to one side of the inner cavity of the slide groove.

5. The eccentric connecting rod type linear grading screen device according to claim 1, characterized in that: The bottom of the inner cavity of the sieve frame (12) is provided with a leakage groove, the inner cavity of the leakage groove is fixedly connected with a cross bar, the surface of the cross bar is movably connected to the bottom of the sieve plate (13), and both sides of the back of the inner cavity of the sieve frame (12) are provided with push grooves.

6. The eccentric connecting rod type linear grading screen device according to claim 1, characterized in that: A limiting rod is fixedly connected to the rear end of one side of the inner cavity of the screening box (2), and both sides of the inner cavity of the limiting plate (7) are respectively slidably connected to the surfaces of the two limiting rods.

7. The eccentric connecting rod type linear grading screen device according to claim 1, characterized in that: A feed inlet is provided on one side of the top of the inner cavity of the screening box (2), and the inner cavity of the feed inlet extends to the outside of the screening box (2).

8. The eccentric connecting rod type linear grading screen device according to claim 1, characterized in that: The front side of the screening box (2) is movably connected to a box door via a hinge, and a handle is fixedly connected to one side of the front side of the box door.

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