Grading device with replaceable screen

Abstract

The utility model provides a grading device with a replaceable screen, which relates to the technical field of grading devices and comprises a support, a placing frame is fixedly mounted on one side of the support, a vibration motor is fixedly mounted at the top of the placing frame, and the output end of the vibration motor is fixedly connected with a connecting plate. A screening device is fixedly mounted on one side of the connecting plate, a resistance mechanism is fixedly mounted in the screening device, and the screening device comprises a screening hopper, a pull block is pulled, a moving rod is separated from the interior of a fixing column, a screen is taken out from the top of a rectangular frame, the fixing column on a new screen is inserted into a fixing through hole in the rectangular frame, the pull block is loosened, and the screen is fixed through the fixing column. The spring drives the moving rod to be inserted into the fixing column for fixing, and the defects that in the prior art, due to the fact that a screen of an existing grading device cannot be replaced, the grading device needs to be replaced, several screening mechanisms are possibly needed, the occupied area is large, and cost is increased are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of grading devices, in particular to a grading device with a replaceable screen. Background Art

[0002] Nowadays, when tea is produced and processed, grading devices are used to screen out the defective tea leaves and ensure the quality of the tea.

[0003] The existing grading device can screen the tea leaves very well when in use. However, because there are many types of tea, they are all placed on one grading device for screening. If the sizes of the tea leaves are similar, they can be used. However, there are large differences. For example, when screening the Houkui and Maofeng tea leaves, the sizes of the two varieties are very different, and different screens are needed. Since the screens of the existing grading device cannot be replaced, the grading device needs to be replaced. Several screening mechanisms may be needed, which occupies a large area and increases cost waste. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that since the screen of the existing grading device cannot be replaced, the grading device needs to be replaced, and several screening mechanisms may be needed, which occupies a large area and increases the waste of costs. A grading device with a replaceable screen is provided.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a grading device with a replaceable screen, comprising: a bracket, a placing rack is fixedly installed on one side of the bracket, a vibration motor is fixedly installed on the top of the placing rack, the output end of the vibration motor is fixedly connected to a connecting plate, a screening device is fixedly installed on one side of the connecting plate, a resistance mechanism is fixedly installed inside the screening device, the screening device comprises a screen bucket, sliding bars are fixedly installed on both sides of the screen bucket, a rectangular through hole is opened on the screen bucket, a rectangular frame is fixedly installed on the inner wall of the rectangular through hole, a screen is installed on the top of the rectangular frame, a fixing column is fixedly installed on the bottom of the screen, a card frame is fixedly installed on one side of the screen bucket, a moving rod is slidably penetrated on the card frame, a blocking piece is fixedly installed on the outside of the moving rod, a spring is sleeved on the outside of the moving rod, and a pull block is fixedly installed on one end of the moving rod.

[0006] As a preferred implementation manner, a fixing through hole matched with the fixing column is provided on the rectangular frame, and a hole matched with the moving rod is provided on one side of the fixing column.

[0007] As a preferred implementation, the baffle and the spring are located inside the card holder, and one end of the spring away from the baffle is fixedly mounted inside the card holder.

[0008] As a preferred embodiment, the resistance mechanism includes a strip block fixedly mounted on the inner wall of the screen bucket, a threaded rod is threadedly connected to the strip block through a nut, a pressure plate is rotatably connected to the bottom of the threaded rod through a bearing, and a telescopic rod is fixedly mounted on the top of the pressure plate.

[0009] As a preferred embodiment, the top of the telescopic rod is fixedly mounted on the top of the strip block, and the strip block is provided with a movable through hole adapted to the threaded rod.

[0010] As a preferred implementation, a clamping plate is fixedly mounted on one side of the pressing plate.

[0011] As a preferred embodiment, a sliding groove matched with the sliding bar is opened on one side of the bracket, and the sliding bar slides inside the sliding groove.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] The utility model solves the problem that, when replacing the filter screen, the pull block is pulled, the moving rod is separated from the interior of the fixed column, the screen is taken out from the top of the rectangular frame, the fixed column on the new screen is inserted into the fixed through hole on the rectangular frame, the pull block is released, and the spring drives the moving rod to be inserted into the fixed column for fixation. The utility model solves the problem that the screen screen of the existing grading device cannot be replaced, the grading device needs to be replaced, and several screening mechanisms may be required, which occupies a large area and increases the waste of costs. According to the size of the tea leaves, the threaded rod is rotated, the pressing plate moves downward, and the distance between the pressing plate and the screen is controlled to prevent the tea leaves from piling up too thickly, resulting in a poor screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic structural diagram of a grading device with a replaceable screen.

[0015] Figure 2 The utility model provides a schematic structural diagram of a screening device of a grading device with a replaceable screen.

[0016] Figure 3 A grading device with replaceable screen provided by the utility model Figure 2 Schematic diagram of the structure of part A in the middle.

[0017] Figure 4 The present invention is a schematic diagram of the structure of the resistance mechanism of a grading device with a replaceable screen provided by the present invention.

[0018] Legend:

[0019] 1. Bracket; 2. Placement rack; 3. Vibration motor; 4. Connecting plate; 5. Screening device; 6. Resistance mechanism;

[0020] 51. Screen bucket; 52. Slide bar; 53. Rectangular through hole; 54. Rectangular frame; 55. Screen; 56. Fixed column; 57. Card frame; 58. Moving rod; 59. Pull block; 510. Block; 511. Spring;

[0021] 61. Bar block; 62. Nut; 63. Threaded rod; 64. Pressing plate; 65. Telescopic rod; 66. Pallet. DETAILED DESCRIPTION

[0022] 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 in 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.

[0023] Example 1

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a technical solution: a grading device with replaceable screen, comprising: a bracket 1, a placing rack 2 is fixedly installed on one side of the bracket 1, a vibration motor 3 is fixedly installed on the top of the placing rack 2, an output end of the vibration motor 3 is fixedly connected to a connecting plate 4, a screening device 5 is fixedly installed on one side of the connecting plate 4, a resistance mechanism 6 is fixedly installed inside the screening device 5, the screening device 5 comprises a screen bucket 51, slide bars 52 are fixedly installed on both sides of the screen bucket 51, a rectangular through hole 53 is opened on the screen bucket 51, a rectangular frame 54 is fixedly installed on the inner wall of the rectangular through hole 53, a screen 55 is installed on the top of the rectangular frame 54, and a fixed Column 56, a bracket 57 is fixedly installed on one side of the screen bucket 51, a moving rod 58 is slidably penetrated on the bracket 57, a baffle 510 is fixedly installed on the outside of the moving rod 58, a spring 511 is sleeved on the outside of the moving rod 58, a pull block 59 is fixedly installed on one end of the moving rod 58, a fixed through hole matched with the fixed column 56 is opened on the rectangular frame 54, a baffle 510 and a spring 511 matched with the moving rod 58 are opened on one side of the fixed column 56, and the baffle 510 and the spring 511 are located inside the bracket 57, and the end of the spring 511 away from the baffle 510 is fixedly installed inside the bracket 57, and a sliding groove matched with the slide bar 52 is opened on one side of the bracket 1, and the slide bar 52 slides inside the sliding groove.

[0025] In this embodiment, when in use, turn on the switch, the vibration motor 3 drives the connecting plate 4 to vibrate, and the connecting plate 4 drives the screening device 5 to move back and forth on the bracket 1 for screening. When replacing the filter 55, pull the pull block 59, and the pull block 59 drives the moving rod 58 to move outward on the bracket 57. When the moving rod 58 moves, it drives the baffle 510 to move, and the baffle 510 drives the spring 511 to compress, so that the moving rod 58 is separated from the inside of the fixed column 56, and the screen 55 is taken out from the top of the rectangular frame 54. The screen 55 drives the fixed column 56 to leave the rectangular frame 54, and a new screen 55 is replaced. The fixed column 56 on the new screen 55 is inserted into the fixed through hole on the rectangular frame 54, and the pull block 59 is released. The spring 511 drives the moving rod 58 to be inserted into the fixed column 56 for fixing.

[0026] Example 2

[0027] like Figure 1 - Figure 4 As shown, the resistance mechanism 6 includes a strip block 61 fixedly mounted on the inner wall of the screen bucket 51, a threaded rod 63 is threadedly connected to the strip block 61 through a nut 62, a pressure plate 64 is rotatably connected to the bottom of the threaded rod 63 through a bearing, a telescopic rod 65 is fixedly mounted on the top of the pressure plate 64, and the top of the telescopic rod 65 is fixedly mounted on the top of the strip block 61, a movable through hole matched with the threaded rod 63 is provided on the strip block 61, a clamping plate 66 is fixedly mounted on one side of the pressure plate 64, a sliding groove matched with the slide bar 52 is provided on one side of the bracket 1, and the slide bar 52 slides inside the sliding groove.

[0028] In this embodiment, according to the size of the tea leaves, the threaded rod 63 is rotated, the threaded rod 63 rotates and moves on the nut 62, the telescopic rod 65 limits the pressing plate 64, and the pressing plate 64 moves downward to adapt to the size of the tea leaves, so that the tea leaves are added between the connecting plate 4 and the clamping plate 66, so that the tea leaves are on the screen 55, and then the tea leaves can be vibrated and screened on the screen, and move to control the distance between the pressing plate 64 and the screen 55 to prevent the tea leaves from piling up too thickly, resulting in poor screening effect.

[0029] Working principle:

[0030] like Figure 1 - Figure 4As shown, when the utility model is in use, turn on the switch, the vibration motor 3 drives the connecting plate 4 to vibrate, and the connecting plate 4 drives the screening device 5 to move back and forth on the bracket 1 for screening. When replacing the filter 55, pull the pull block 59, the moving rod 58 is separated from the inside of the fixed column 56, and the screen 55 is taken out from the top of the rectangular frame 54, and the fixed column 56 on the new screen 55 is inserted into the fixed through hole on the rectangular frame 54, and the pull block 59 is released. The spring 511 drives the moving rod 58 to be inserted into the fixed column 56 for fixing. According to the size of the tea leaves, the threaded rod 63 is rotated, and the pressing plate 64 moves downward to control the distance between the pressing plate 64 and the screen 55 to prevent the tea leaves from piling up too thickly, resulting in poor screening effect.

[0031] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A grading device with a replaceable screen, characterized in that: include: A support (1), a placement rack (2) is fixedly mounted on one side of the support (1), a vibration motor (3) is fixedly mounted on the top of the placement rack (2), an output end of the vibration motor (3) is fixedly connected to a connecting plate (4), a screening device (5) is fixedly mounted on one side of the connecting plate (4), a resistance mechanism (6) is fixedly mounted inside the screening device (5), the screening device (5) comprises a screening bucket (51), sliding bars (52) are fixedly mounted on both sides of the screening bucket (51), and a rectangular through hole (53) is opened on the screening bucket (51), A rectangular frame (54) is fixedly mounted on the inner wall of the rectangular through hole (53), a screen (55) is mounted on the top of the rectangular frame (54), a fixed column (56) is fixedly mounted on the bottom of the screen (55), a bracket (57) is fixedly mounted on one side of the screen bucket (51), a moving rod (58) is slidably penetrated through the bracket (57), a blocking piece (510) is fixedly mounted on the outside of the moving rod (58), a spring (511) is sleeved on the outside of the moving rod (58), and a pull block (59) is fixedly mounted on one end of the moving rod (58).

2. A grading device with a replaceable screen according to claim 1, characterized in that: The rectangular frame (54) is provided with a fixing through hole matched with the fixing column (56), and one side of the fixing column (56) is provided with a hole matched with the moving rod (58).

3. A grading device with replaceable screen according to claim 1, characterized in that: The blocking piece (510) and the spring (511) are located inside the card frame (57), and one end of the spring (511) away from the blocking piece (510) is fixedly mounted inside the card frame (57).

4. A grading device with a replaceable screen according to claim 1, characterized in that: The resistance mechanism (6) comprises a strip block (61) fixedly mounted on the inner wall of the sieve bucket (51), a threaded rod (63) being threadedly connected to the strip block (61) via a nut (62), a pressing plate (64) being rotatably connected to the bottom of the threaded rod (63) via a bearing, and a telescopic rod (65) being fixedly mounted on the top of the pressing plate (64).

5. A grading device with replaceable screen according to claim 4, characterized in that: The top of the telescopic rod (65) is fixedly mounted on the top of the strip block (61), and the strip block (61) is provided with a movable through hole adapted to the threaded rod (63).

6. A grading device with replaceable screen according to claim 4, characterized in that: A clamping plate (66) is fixedly mounted on one side of the pressing plate (64).

7. A grading device with a replaceable screen according to claim 1, characterized in that: A sliding groove matched with the sliding bar (52) is provided on one side of the bracket (1), and the sliding bar (52) slides inside the sliding groove.

Images