Vibrating screen for seedling substrate conveyor

Abstract

The utility model relates to the technical field of vibrating screens, and provides a vibrating screen for a seedling substrate conveyor, which comprises a rack, a screen frame, a screen mesh and a limiting plate, the screen frame is fixedly arranged on the machine frame, material screening holes are formed in the screen frame, and the material screening holes are located above the conveying belt. The screen mesh is fixedly arranged on the screen frame, blocks the screening holes and is used for filtering a matrix passing through the screening holes; the limiting plate is arranged on the screen frame in a sliding mode, selectively blocks the screening holes and is used for adjusting the falling cross section of the matrix. According to the utility model, by arranging the limiting plate in sliding connection with the screen frame, the shielding area of the limiting plate to the screening holes can be adjusted so as to adjust the size of the falling surface of the vibrating screen, so that the vibrating screen is suitable for conveyors of different specifications or types, and the adaptability of the vibrating screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, in particular to a vibrating screen for a seedling culture matrix conveyor. Background Art

[0002] In the process of factory-based rice seedling cultivation and sowing, the particle size of the seedling substrate is required to be 3-5mm. Particles that are too large may easily clog the seeder and cause seedling shortages. In order to ensure that the substrate particle size meets the usage requirements, a vibrating screen is usually used in production to screen and clean the substrate.

[0003] The utility model with patent publication number CN205183136U discloses a crushing mechanism of a rice seedling bed soil screener that can further crush small soil blocks screened by the vibrating screen of the soil screener, with low energy consumption and high efficiency. The outer fixed cylinder is sleeved on the outer side of the inner drum, and several nail teeth on the outer fixed cylinder and several nail teeth on the inner drum are meshed with each other and partially overlapped along the radial direction. The upper end of the outer fixed cylinder is provided with a feeding port along the length direction of the outer fixed cylinder. The feeding port is located below the front end of the vibrating screen and is fixed with a feed port around it. The lower end of the outer fixed cylinder is provided with a discharge port along the length direction of the outer fixed cylinder. The discharge port is fixed with a discharge port around it. The discharge port is located at one end of the belt conveyor and is arranged above the belt conveyor and tilted downward. The utility model can crush small soil blocks that are not suitable for seedling cultivation in the seedling bed, and has the advantages of reducing power consumption, saving power, and improving work efficiency by 50%.

[0004] In the above technical solution, a vibrating screen is provided on the belt conveyor to screen the matrix. However, in order to meet the needs of different working conditions, conveyors of different specifications or types need to be used, and each conveyor needs to be equipped with a vibrating screen with a scattering surface corresponding to its conveying surface, resulting in a large demand for the number and types of vibrating screens, causing a waste of resources. Utility Model Content

[0005] In view of this, the utility model proposes a vibrating screen for a seedling medium conveyor, which can adapt to conveyors of different specifications or types and improve the adaptability of the vibrating screen.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a vibrating screen for a seedling substrate conveyor, comprising a frame, a screen frame, a screen mesh and a limit plate, wherein:

[0007] The frame is used to be fixed above the conveyor belt;

[0008] The sieve frame is fixedly arranged on the frame, and has sieve holes therein, and the sieve holes are located above the conveyor belt;

[0009] The sieve is fixedly arranged on the sieve frame and blocks the sieve holes to filter the matrix passing through the sieve holes;

[0010] The limiting plate is slidably arranged on the sieve frame and selectively blocks the sieve material holes to adjust the falling cross section of the matrix.

[0011] On the basis of the above technical solution, preferably, the limiting plate includes a moving plate and a guide plate, wherein:

[0012] The movable plate is slidably arranged on the screen frame and selectively blocks the screen material holes, and the movable plate slides along the width direction of the conveyor belt;

[0013] The guide plate is arranged at one end of the movable plate, and the distance from the guide plate to the screen increases gradually from the end close to the movable plate to the end far away from the movable plate.

[0014] More preferably, two limit plates are provided, the two limit plates are symmetrically arranged with respect to the length direction of the conveyor belt, and the two guide plates are arranged in the middle of the two movable plates.

[0015] On the basis of the above technical solution, preferably, it also includes a spreading rod, which is movably fixed on the frame and is parallel to and spaced apart from the upper side of the conveyor belt to adjust the thickness of the substrate on the upper side of the conveyor belt.

[0016] More preferably, the spreading rod comprises a parallel portion and two bent portions, wherein:

[0017] The parallel portion is arranged above the conveyor belt, is parallel to the width direction of the conveyor belt, and is located in the middle position of the width direction of the conveyor belt;

[0018] The two bending portions are fixedly arranged at two ends of the parallel portion respectively, and the bending portions are bent in a direction away from the conveying direction of the conveyor belt toward the parallel portion and are parallel to the upper side of the conveyor belt.

[0019] More preferably, the material spreading rod further comprises a fixing plate, and the frame comprises a plurality of columns and connecting members, wherein:

[0020] The fixing plate is fixedly arranged at one end of the bending portion away from the parallel portion;

[0021] The upright column is fixedly arranged on the screen frame;

[0022] The connecting member is fixedly arranged on the column in a slidable manner and is connected to the fixing plate.

[0023] More preferably, the connecting member comprises a fixing sleeve, a bolt and a nut, wherein:

[0024] The fixing sleeve is slidably arranged on the column;

[0025] The bolt is connected to the peripheral side of the fixing sleeve by threaded fitting, and its front end selectively abuts against the column;

[0026] The nut is connected to the bolt through threaded fitting, and the fixing plate is abutted and fixed between the nut and the fixing sleeve.

[0027] More preferably, it further comprises an oscillating motor, and the oscillating motor is fixedly arranged on the sieve frame.

[0028] More preferably, the bottom end of the column is conical.

[0029] On the basis of the above technical solution, preferably, the screen frame includes a lower screen frame, an upper screen frame, a plurality of springs, two enclosures and two slide plates, wherein:

[0030] The lower screen frame is fixedly arranged on the frame;

[0031] The upper screen frame is arranged above the lower screen frame and is spaced therefrom, the upper screen frame and the lower screen frame are both provided with the screening holes, and the two screening holes are both provided with the screen meshes;

[0032] The spring is fixedly arranged between the lower screen frame and the upper screen frame;

[0033] The two enclosures are respectively arranged on the top sides of the lower screen frame and the upper screen frame, and the enclosures are a frame structure in a U-shaped shape when viewed from above, and the upper enclosure is provided with a material discharge opening in the width direction of the conveyor belt, and the lower enclosure is provided with the material discharge opening in the length direction of the conveyor belt;

[0034] The two slide plates are respectively arranged on the upper screen frame and the lower screen frame, and the two slide plates are slidably connected.

[0035] The utility model of a vibrating screen for a seedling substrate conveyor has the following beneficial effects compared with the prior art:

[0036] (1) By providing a limit plate slidably connected to the screen frame, the blocking area of ​​the limit plate on the screen hole can be adjusted to adjust the size of the falling surface of the vibrating screen, so that the vibrating screen can be adapted to conveyors of different specifications or types, thereby improving the adaptability of the vibrating screen;

[0037] (2) By providing a spreading rod, the substrate on the surface of the conveyor belt can be spread flat, so that the substrate is evenly conveyed;

[0038] (3) By setting up the upper sieve frame and the lower sieve frame, the matrix can be screened twice, thereby improving the screening performance and screening efficiency of the vibrating screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be 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 paying creative work.

[0040] Figure 1 This is a front view of a vibrating screen for a seedling medium conveyor of the utility model;

[0041] Figure 2 It is a three-dimensional diagram of a vibrating screen for a seedling medium conveyor of the utility model;

[0042] Figure 3 It is a three-dimensional diagram of the bottom of a screen frame in a vibrating screen for a seedling medium conveyor of the utility model;

[0043] Figure 4 It is a three-dimensional diagram of a limit plate in a vibrating screen for a seedling substrate conveyor of the utility model;

[0044] Figure 5 This is an exploded view of a connecting piece in a vibrating screen for a seedling substrate conveyor of the utility model;

[0045] Figure 6 This is a local corrosion diagram of a material spreading rod in a vibrating screen for a seedling substrate conveyor of the utility model;

[0046] Figure 7 A three-dimensional diagram of the top of a lower screen frame in a vibrating screen for a seedling substrate conveyor of the utility model;

[0047] Figure 8 The utility model is a three-dimensional diagram of the bottom of an upper screen frame of a vibrating screen for a seedling medium conveyor.

[0048] Among them: 1. Frame; 11. Column; 12. Connector; 121. Fixed sleeve; 122. Bolt; 123. Nut; 2. Screen frame; 21. Lower screen frame; 22. Upper screen frame; 23. Spring; 24. Baffle; 25. Slide plate; 201. Screen hole; 202. Feeding port; 3. Screen; 4. Limit plate; 41. Moving plate; 42. Guide plate; 5. Spreading rod; 51. Parallel part; 52. Bending part; 53. Fixed plate; 6. Oscillation motor; 7. Conveyor belt. DETAILED DESCRIPTION

[0049] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] like Figure 1-8 As shown, a vibrating screen for a seedling medium conveyor of the utility model comprises a frame 1, a screen frame 2, a screen mesh 3, a limiting plate 4, a spreading rod 5 and an oscillating motor 6.

[0051] The frame 1 is used to carry other components and is fixed above the conveyor belt 7 .

[0052] The screen frame 2 is used to fix the screen 3. The screen frame 2 is fixed on the frame 1, and a screen hole 201 is opened inside the screen frame 2. The screen hole 201 is located above the conveyor belt 7. The material falls onto the conveyor belt 7 through the screen hole 201, and is then transported to the designated position by the conveyor belt 7.

[0053] The sieve 3 is used to filter the matrix passing through the sieve holes 201. The sieve 3 is fixedly arranged on the sieve frame 2 and blocks the sieve holes 201 to allow the matrix smaller than the aperture of the sieve 3 to pass through the sieve 3 and the sieve holes 201, while blocking the matrix with a larger particle size above the sieve 3.

[0054] The limiting plate 4 is used to adjust the falling cross-section of the matrix. The limiting plate 4 is slidably set on the screen frame 2 and selectively blocks the screen hole 201. When the vibrating screen is installed on a conveyor belt 7 with larger specifications, the limiting plate 4 can be slid to a position away from the screen hole 201. When the vibrating screen is installed on a conveyor belt 7 with smaller specifications, the limiting plate 4 is slid into the screen hole 201 to partially block the screen hole 201 so that it corresponds to the surface of the conveyor belt 7. The setting of the limiting plate 4 can make the size of the falling surface of the vibrating screen material adapt to conveyor belts 7 of different specifications or types, thereby improving the adaptability of the vibrating screen, without the need to manufacture vibrating screens of different specifications for conveyor belts 7 of different types or specifications, which has a certain saving effect.

[0055] like Figure 4As shown, the limiting plate 4 includes a movable plate 41 and a guide plate 42, wherein the movable plate 41 is slidably set on the screen frame 2 and selectively blocks the screen hole 201, and the movable plate 41 slides along the width direction of the conveyor belt 7; the guide plate 42 is set at one end of the movable plate 41, and the distance from the guide plate 42 to the screen 3 gradually increases from the end close to the movable plate 41 to the end away from the movable plate 41. It is preferred to set the guide plate 42 to a plane shape, and by using the setting of its inclined surface, the matrix at the edge of the screen hole 201 can be guided and redirected to prevent the matrix from falling to the edge of the conveyor belt 7 and splashing onto the ground.

[0056] like Figure 3 As shown, it is preferred to provide two limit plates 4, the two limit plates 4 are symmetrically arranged about the length direction of the conveyor belt 7, and the two guide plates 42 are arranged in the middle of the two movable plates 41. The two limit plates 4 can not only improve the adjustment efficiency of the falling surface of the vibrating screen, but also adjust the center point position of the falling surface to adapt to the working condition where the vibrating screen and the conveyor belt 7 are installed misaligned.

[0057] The spreading rod 5 is used to adjust the thickness of the substrate on the upper side of the conveyor belt 7. The spreading rod 5 is fixedly arranged on the frame 1 in a movable manner, and is parallel to and spaced apart from the upper side of the conveyor belt 7. The spreading rod 5 will block the substrate above the conveyor belt 7, thereby allowing the substrate whose height is lower than the spreading rod 5 to pass through, so that the thickness of the substrate on the conveyor belt 7 is not greater than the distance between the spreading rod 5 and the conveyor belt 7.

[0058] In order to prevent the substrate on the conveyor belt 7 from being affected by the spreading rod 5 and falling onto the ground, Figure 6 As shown, the spreading rod 5 includes a parallel portion 51, two bent portions 52 and a fixed plate 53, wherein the parallel portion 51 is arranged above the conveyor belt 7, the parallel portion 51 is parallel to the width direction of the conveyor belt 7, and is located in the middle position of the width direction of the conveyor belt 7; the two bent portions 52 are fixedly arranged at both ends of the parallel portion 51, and the bent portions 52 are bent in the direction of the parallel portion 51 away from the conveying direction of the conveyor belt 7, and are parallel to the upper side of the conveyor belt 7, so that the bent portions 52 first contact the substrate and move the substrate toward the center of the conveyor belt 7.

[0059] In order to realize the installation of the material spreading rod 5, it is preferred that the frame 1 includes a plurality of columns 11 and connecting pieces 12, the fixing plate 53 is fixedly arranged at the end of the bending portion 52 away from the parallel portion 51; the column 11 is fixedly arranged on the screen frame 2; the connecting piece 12 is fixedly arranged on the column 11 in a slidable manner and is connected to the fixing plate 53, and the material spreading rod 5 can be adjusted according to the height of the conveyor belt 7 or the thickness of the substrate by utilizing the slidable connection between the connecting piece 12 and the column 11; specifically, in order to facilitate fixing the frame 1 on the ground, it is preferred that the bottom end of the column 11 is conical in shape so as to be inserted into the ground, and of course, the connecting piece 12 can also be used to connect to the conveyor belt 7 to enhance its fixing firmness.

[0060] like Figure 5 As shown, the connecting member 12 includes a fixing sleeve 121, a bolt 122 and a nut 123, wherein the fixing sleeve 121 is slidably arranged on the column 11; the bolt 122 is connected to the peripheral side of the fixing sleeve 121 by threaded fitting, and its front end selectively abuts against the column 11, and when the fixing sleeve 121 slides to the required position of the column 11; tighten the bolt 122, so that the front end of the bolt 122 abuts against the column 11, and the fixing sleeve 121 can be fixed; the nut 123 is connected to the bolt 122 by threaded fitting, and the fixing plate 53 is abutted and fixed between the nut 123 and the fixing sleeve 121, and when the nut 123 is turned to keep it away from the fixing plate 53, the angle of the fixing plate 53 can be adjusted, so that the fixing plate 53 can adapt to the inclinations of different conveyor belts 7, thereby improving the adaptability of the vibrating screen.

[0061] The oscillation motor 6 is used to drive the vibrating screen to vibrate, and the oscillation motor 6 is fixedly arranged on the screen frame 2 .

[0062] like Figure 2 , Figure 7 and Figure 8 As shown, the screen frame 2 includes a lower screen frame 21, an upper screen frame 22, a plurality of springs 23, two enclosures 24 and two slide plates 25, wherein the lower screen frame 21 is fixedly arranged on the frame 1; the upper screen frame 22 is arranged above the lower screen frame 21 and is spaced therefrom, and screening holes 201 are provided in the upper screen frame 22 and the lower screen frame 21, and screen meshes 3 are provided in the two screening holes 201; the spring 23 is fixedly arranged between the lower screen frame 21 and the upper screen frame 22; the two enclosures 24 are respectively arranged on the top sides of the lower screen frame 21 and the upper screen frame 22, the enclosures 24 are frame structures in the shape of a U-shaped frame when viewed from above, and the upper enclosure 24 is provided with a discharge port 202 in the width direction of the conveyor belt 7, and the lower enclosure 24 is provided with a discharge port 202 in the length direction of the conveyor belt 7; as shown Figure 2As shown, when the material falls from above onto the upper sieve frame 22, the matrix with large particles is blocked on the top side of the upper sieve frame 22 and falls to the ground along the upper discharge port 202, while the matrix passing through the screen 3 on the upper sieve frame 22 falls to the lower sieve frame 21. Similarly, the matrix that meets the particle size falls onto the conveyor belt 7 and is transported to the designated position by the conveyor belt 7, while other matrix falls to the ground along the lower discharge port 202. The aperture of the screen 3 on the lower sieve frame 21 is smaller than the aperture of the screen 3 on the upper sieve frame 22. Therefore, the matrix can be screened in layers, thereby improving its screening efficiency and screening performance. At the same time, the positions of the two discharge ports 202 are different, so the matrixes of different particle sizes are accumulated at different positions, which also facilitates subsequent processing.

[0063] The two slide plates 25 are respectively arranged on the upper screen frame 22 and the lower screen frame 21, and the two slide plates 25 are slidably connected, thereby limiting the upper screen frame 22 from moving along the width direction of the conveyor belt 7, thereby preventing the matrix from being spilled outside the vibrating screen.

[0064] The working principle of a vibrating screen for a seedling substrate conveyor of the utility model is as follows:

[0065] like Figure 1 As shown, the vibrating screen is fixed on the conveyor belt 7, and the matrix raw material is allowed to fall from the top of the screen frame 2. The matrix with a particle size larger than the inner diameter of the upper screen 3 is discharged from the upper discharge port 202 to the outside of the vibrating screen, and the matrix with a particle size smaller than the inner diameter of the upper screen 3 passes through this screen 3 and falls onto the lower screen 3. Similarly, the matrix with a particle size larger than the inner diameter of the lower screen 3 is discharged from the lower discharge port 202 to the outside of the vibrating screen, and the matrix with a particle size smaller than the inner diameter of the lower screen 3 passes through this screen 3 and falls onto the conveyor belt 7 below, so as to be transported to the designated position by the conveyor belt 7. During this period, the position of the limit plate 4 can be adjusted according to the position and width of the conveyor belt 7, so that the width of the falling surface of the matrix at the lower screen 3 is smaller than the width of the conveyor belt 7, and the thickness of the matrix on the conveyor belt 7 can also be controlled by adjusting the position of the spreading rod 5.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibrating screen for a seedling medium conveyor, characterized in that: It comprises a frame (1), a screen frame (2), a screen mesh (3) and a limit plate (4), wherein: The frame (1) is used to be fixed above the conveyor belt (7); The sieve frame (2) is fixedly arranged on the frame (1), and is provided with sieve holes (201) therein, and the sieve holes (201) are located above the conveyor belt (7); The sieve (3) is fixedly arranged on the sieve frame (2) and blocks the sieve holes (201) to filter the matrix passing through the sieve holes (201); The limiting plate (4) is slidably arranged on the sieve frame (2) and selectively blocks the sieve material holes (201) to adjust the falling cross section of the matrix.

2. A vibrating screen for a seedling medium conveyor as claimed in claim 1, characterized in that: The limiting plate (4) comprises a moving plate (41) and a guide plate (42), wherein: The movable plate (41) is slidably arranged on the screen frame (2) and selectively blocks the screen material holes (201), and the movable plate (41) slides along the width direction of the conveyor belt (7); The guide plate (42) is arranged at one end of the movable plate (41), and the distance between the guide plate (42) and the screen (3) gradually increases from the end close to the movable plate (41) to the end far from the movable plate (41).

3. A vibrating screen for a seedling medium conveyor as claimed in claim 2, characterized in that: Two limit plates (4) are provided, the two limit plates (4) are symmetrically arranged with respect to the length direction of the conveyor belt (7), and the two guide plates (42) are arranged in the middle of the two movable plates (41).

4. A vibrating screen for a seedling medium conveyor as claimed in claim 1, characterized in that: It also comprises a spreading rod (5), which is fixedly arranged on the frame (1) in a movable manner and is arranged parallel to and at intervals from the upper side of the conveyor belt (7) for adjusting the thickness of the substrate on the upper side of the conveyor belt (7).

5. A vibrating screen for a seedling medium conveyor as claimed in claim 4, characterized in that: The material spreading rod (5) comprises a parallel portion (51) and two bent portions (52), wherein: The parallel portion (51) is arranged above the conveyor belt (7), the parallel portion (51) is parallel to the width direction of the conveyor belt (7), and is located in the middle position of the width direction of the conveyor belt (7); The two bending portions (52) are respectively fixedly arranged at the two ends of the parallel portion (51); the bending portions (52) are bent in a direction away from the conveying direction of the conveyor belt (7) toward the parallel portion (51) and are parallel to the upper side of the conveyor belt (7).

6. A vibrating screen for a seedling medium conveyor as claimed in claim 5, characterized in that: The material spreading rod (5) further comprises a fixing plate (53), and the frame (1) comprises a plurality of upright posts (11) and connecting members (12), wherein: The fixing plate (53) is fixedly arranged at one end of the bending portion (52) away from the parallel portion (51); The upright column (11) is fixedly arranged on the screen frame (2); The connecting member (12) is fixedly disposed on the column (11) in a slidable manner and is connected to the fixing plate (53).

7. A vibrating screen for a seedling medium conveyor as claimed in claim 6, characterized in that: The connecting member (12) comprises a fixing sleeve (121), a bolt (122) and a nut (123), wherein: The fixing sleeve (121) is slidably arranged on the column (11); The bolt (122) is connected to the peripheral side of the fixing sleeve (121) by threaded fitting, and its front end selectively abuts against the column (11); The nut (123) is connected to the bolt (122) by threaded engagement, and the fixing plate (53) is abutted and fixed between the nut (123) and the fixing sleeve (121).

8. A vibrating screen for a seedling medium conveyor as claimed in claim 7, characterized in that: It also comprises an oscillating motor (6), wherein the oscillating motor (6) is fixedly arranged on the screen frame (2).

9. A vibrating screen for a seedling medium conveyor as claimed in claim 8, characterized in that: The bottom end of the column (11) is in a cone shape.

10. A vibrating screen for a seedling medium conveyor as claimed in claim 1, characterized in that: The sieve frame (2) comprises a lower sieve frame (21), an upper sieve frame (22), a plurality of springs (23), two enclosures (24) and two slide plates (25), wherein: The lower screen frame (21) is fixedly arranged on the frame (1); The upper sieve frame (22) is arranged above the lower sieve frame (21) and is spaced therefrom; the upper sieve frame (22) and the lower sieve frame (21) are both provided with the sieve holes (201), and the sieve mesh (3) is provided in both the sieve holes (201); The spring (23) is fixedly arranged between the lower screen frame (21) and the upper screen frame (22); The two enclosures (24) are respectively arranged on the top sides of the lower screen frame (21) and the upper screen frame (22); the enclosures (24) are frame structures that are in the shape of a U in a top view; the upper enclosure (24) is provided with a material discharge opening (202) in the width direction of the conveyor belt (7); and the lower enclosure (24) is provided with a material discharge opening (202) in the length direction of the conveyor belt (7); The two slide plates (25) are respectively arranged on the upper screen frame (22) and the lower screen frame (21), and the two slide plates (25) are slidably connected.

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