Red date grading screening device

Abstract

The utility model discloses a red date grading and screening device which comprises a screening cylinder, the screening cylinder is divided into grading and screening areas from left to right through grate rods, gaps of the grate rods of the grading and screening areas are gradually increased from left to right, a transmission shaft is arranged in the screening cylinder, the transmission shaft is connected with the screening cylinder through a connecting rod, and the transmission shaft is driven by a motor to rotate. A base is arranged above the screening barrel and corresponds to the grading screening areas in position, a scraping brush is connected to the lower portion of the base in an inserted mode, the scraping brush makes contact with a grate rod on the screening barrel, and the scraping brush is connected with the base through a quick-mounting pin. According to the red date screening device, the detachable scraping brush is arranged above the screening cylinder, when the screening cylinder carries out rotary screening operation, the scraping brush can make contact with gaps of grate rods of the screening cylinder, and therefore red dates clamped in the gaps of the grate rods can be scraped off, normal operation of red date screening operation is guaranteed, and the screening efficiency of the red dates is improved. And the red dates clamped on the screening cylinder can be automatically cleaned, so that great convenience is brought to the screening operation of the red dates.

Description

Technical Field

[0001] This utility model relates to the technical field of jujube screening equipment, specifically to a jujube grading and screening device. Background Technology

[0002] When processing jujubes, due to differences in size and plumpness, they need to be graded and screened to collect jujubes of the same size together for easier subsequent processing. Currently, a common type of jujube screening equipment on the market includes a rotating screening cylinder with a grate structure on its outer perimeter. The grates are arranged with different gaps to screen jujubes of different sizes. However, in actual screening, because the jujubes are poured into the screening cylinder in batches, collisions between the jujubes can easily cause some large jujubes to get stuck between the narrow gaps of the grates. As the screening cylinder rotates, the jujubes stuck between the grates cannot fall out, which not only affects the normal falling of the jujubes but also requires manual cleaning of the jujubes stuck between the grates, causing great inconvenience to the jujube screening operation. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a jujube grading and screening device to solve the aforementioned technical problems.

[0004] The present invention adopts the following technical solution: a jujube grading and screening device, comprising a screening cylinder arranged at an angle with the left side higher than the right side, the screening cylinder being divided into several grading screening sections from left to right by grating rods, the gap between the grating rods in each grading screening section gradually increasing from left to right, a drive shaft being provided inside the screening cylinder, the drive shaft being connected to the screening cylinder by a connecting rod, the drive shaft being driven to rotate by a motor, several bases being provided above the screening cylinder, the bases corresponding to the positions of each of the grading screening sections, a scraping brush being inserted below the base, the scraping brush contacting the grating rods on the screening cylinder, the scraping brush being detachably connected to the base by a quick-release pin.

[0005] Furthermore, the scraping brush includes a handle and stiff bristles. The top of the handle is provided with a mounting head, and the lower end of the base is provided with a slot. The mounting head is inserted into the slot, and the quick-release pin passes through the connection between the base and the mounting head. The bristles are arranged in close contact with the grate bar on the screening cylinder.

[0006] Furthermore, the quick-install pin includes a pin rod, and the mounting head and the base are provided with pin holes for easy insertion of the pin rod. The pin rod passes through the mounting head and the base along the pin hole. One end of the pin rod outside the base is provided with a rod head larger than itself. The end of the pin rod with the rod head is also fitted with a telescopic spring. One end of the telescopic spring abuts against one side of the rod head, and the other end of the telescopic spring abuts against the side wall of the base. A limiting protrusion is provided on the side wall of the other end of the pin rod. The base and the mounting head are provided with through grooves at the positions corresponding to the pin holes. The grooves communicate with the pin holes, and the limiting protrusions can slide along the grooves.

[0007] Furthermore, the base is provided with a limiting groove on one side corresponding to the limiting protrusion, the limiting protrusion is inserted into the limiting groove and the limiting groove is arranged opposite to the sliding groove.

[0008] Furthermore, the screening cylinder, the motor, and the base are all mounted on the frame. The frame has mounting plates on both sides corresponding to the screening cylinder. The mounting plates have rotating shaft seats. Both ends of the transmission shaft are mounted on the rotating shaft seats. The motor is mounted on one side of the mounting plate and connected to the end of the transmission shaft. The upper end of the frame is also provided with a bracket, which is suspended above the screening cylinder. The base is mounted on the bracket.

[0009] Furthermore, a discharge chute is provided on the frame at a position below each grading screening section on the corresponding screening cylinder.

[0010] Furthermore, a collection box is provided below the discharge chute.

[0011] The above-mentioned technical solution of this utility model has the following beneficial effects: By setting a detachable scraping brush above the screening cylinder, when the screening cylinder is rotating and screening, the scraping brush will come into contact with the gap of the screening cylinder grate rod, thus scraping off the red dates stuck in the gap of the grate rod, thereby ensuring the normal operation of the red date screening operation, and automatically cleaning the red dates stuck on the screening cylinder, which brings great convenience to the red date screening operation. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the front view structure of an embodiment of the present utility model;

[0014] Figure 2 This is a side cross-sectional view of the screening cylinder in an embodiment of the present invention;

[0015] Figure 3 for Figure 2 Enlarged view of point A in the middle. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figure 1-3 As shown, this utility model embodiment provides a jujube grading and screening device, including a screening cylinder 1 arranged at an angle with the left side higher than the right side. The screening cylinder 1 is divided into several grading screening sections from left to right by grate bars 2. The gap between the grate bars 2 in each grading screening section gradually increases from left to right. A drive shaft 3 is provided inside the screening cylinder 1. The drive shaft 3 is connected to the screening cylinder 1 through a connecting rod 4. The drive shaft 3 is driven to rotate by a motor 5. Several bases 6 are provided above the screening cylinder 1. The bases 6 correspond to the positions of each grading screening section. A scraping brush is inserted below the base 6. The scraping brush contacts the grate bars 2 on the screening cylinder 1. The scraping brush is detachably connected to the base 6 through a quick-release pin.

[0019] The scraping brush includes a handle 7 and stiff bristles 8. The top of the handle 7 is provided with a mounting head 9, and the lower end of the base 6 is provided with a slot. The mounting head 9 is inserted into the slot, and a quick-connect pin passes through the connection between the base 6 and the mounting head 9. The bristles 8 are arranged in close contact with the grate rod 2 on the screening cylinder 1.

[0020] The quick-release pin includes a pin rod 10. The mounting head 9 and the base 6 are provided with pin holes for easy insertion of the pin rod 10. The pin rod 10 passes through the mounting head 9 and the base 6 along the pin hole. The end of the pin rod 10 outside the base 6 is provided with a rod head 11 that is larger than itself. The end of the pin rod 10 with the rod head 11 is also fitted with a telescopic spring 12. One end of the telescopic spring 12 abuts against one side of the rod head 11, and the other end of the telescopic spring 12 abuts against the side wall of the base 6. A limiting protrusion 13 is provided on the side wall of the other end of the pin rod 10. The base 6 and the mounting head 9 are provided with through grooves 14 at the corresponding pin hole positions. The grooves 14 communicate with the pin hole, and the limiting protrusion 13 can slide along the grooves 14.

[0021] The base 6 has a limiting groove 15 on one side of the corresponding limiting protrusion 13. The limiting protrusion 13 is inserted into the limiting groove 15 and the limiting groove 15 is arranged opposite to the sliding groove 14.

[0022] The screening cylinder 1, motor 5 and base 6 are all mounted on the frame 16. Mounting plates 17 are provided on the frame 16 at positions corresponding to both sides of the screening cylinder 1. Rotating shaft seats 18 are provided on the mounting plates 17. Both ends of the transmission shaft 3 are mounted on the rotating shaft seats 18. The motor 5 is mounted on one side of the mounting plate 17 and connected to the end of the transmission shaft 3. A bracket 19 is also provided at the upper end of the frame 16. The bracket 19 is suspended above the screening cylinder 1, and the base 6 is mounted on the bracket 19.

[0023] A discharge chute 20 is provided on the frame 16 below each grading screening section on the corresponding screening cylinder 1.

[0024] A collection box 21 is provided below the discharge chute 20.

[0025] The working principle of this utility model is as follows: Red dates are added into the sieve cylinder 1 through the opening at one of its raised ends. Simultaneously, the motor 5 drives the sieve cylinder 1 to rotate, causing the red dates to slide continuously to the right. As the red dates move within the sieve cylinder 1, dates of different sizes fall between the grates in different grading sections, thus allowing for the classification and collection of red dates by size. The graded red dates fall into their respective collection boxes 21. During the sieving process within the sieve cylinder 1, some red dates inevitably get stuck in the gaps between the grates 2 and cannot fall out normally. Therefore, multiple sets of scraping brushes above the sieve cylinder 1, each corresponding to a different grading section, scrape the gaps between the grates 2, thus removing the red dates stuck in the gaps and preventing them from getting stuck.

[0026] During the operation of the screening cylinder 1, as time goes on, the bristles 8 of the scraper brush will wear down and fall off or curl. At this point, gaps will appear between the bristles 8 and the grate bars 2 of the screening cylinder 1, rendering the bristles 8 ineffective at cleaning these gaps. Therefore, the scraper brush needs to be replaced. To disassemble, press the rod head 11 at the end of the pin 10, causing the limiting protrusion 13 at the other end of the pin 10 to move out of the limiting groove 15. Then rotate the pin 10 so that the limiting protrusion 13 at its end rotates to the corresponding position of the sliding groove 14. Pulling the pin 10 outwards will cause the limiting protrusion 13 to slide along the sliding groove 14, allowing the entire pin 10 to be removed. After all the quick-release pins are removed, the scraper brush can be installed. Remove the mounting head 9 from the end, then replace it with a new scraping brush. Insert the mounting head 9 from the top of the scraping brush into the slot at the bottom of the base 6. Then insert the pin 10 along the pin hole. When inserting, the limiting protrusion 13 on the pin 10 corresponds to the sliding groove 14. When the limiting protrusion 13 extends out at the other end of the base 6, the rod head 11 will press against the telescopic spring 12. Then rotate the pin 10 to align the limiting protrusion 13 with the limiting groove 15 on the base 6. After releasing the pin 10, under the action of the return spring force of the telescopic spring 12, the limiting protrusion 13 is firmly inserted into the limiting groove 15. After the quick-install pin is installed, the scraping brush is fixedly installed. The whole process can be completed without the aid of tools, which is convenient, quick and easy, saving time and effort.

[0027] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A jujube grading and screening device, comprising a screening cylinder arranged at an angle with the left side higher than the right side, the screening cylinder being divided into several grading screening sections from left to right by grating bars, the gap between the grating bars in each grading screening section gradually increasing from left to right, a drive shaft being provided inside the screening cylinder, the drive shaft being connected to the screening cylinder via a connecting rod, and the drive shaft being driven to rotate by a motor, characterized in that: Several bases are provided above the screening cylinder, and the bases correspond to the positions of each of the grading screening sections. A scraping brush is inserted below the base and contacts the grate bar on the screening cylinder. The scraping brush is detachably connected to the base through a quick-release pin.

2. The jujube grading and screening device according to claim 1, characterized in that: The scraping brush includes a handle and stiff bristles. The top of the handle is provided with a mounting head, and the lower end of the base is provided with a slot. The mounting head is inserted into the slot, and the quick-release pin passes through the connection between the base and the mounting head. The bristles are arranged in close contact with the grate bar on the screening cylinder.

3. The jujube grading and screening device according to claim 2, characterized in that: The quick-release pin includes a pin rod. The mounting head and the base are provided with pin holes for easy insertion of the pin rod. The pin rod passes through the mounting head and the base along the pin hole. One end of the pin rod outside the base is provided with a rod head larger than itself. The end of the pin rod with the rod head is also fitted with a telescopic spring. One end of the telescopic spring abuts against one side of the rod head, and the other end of the telescopic spring abuts against the side wall of the base. A limiting protrusion is provided on the side wall of the other end of the pin rod. The base and the mounting head are provided with through grooves at the corresponding pin holes. The grooves communicate with the pin holes, and the limiting protrusions can slide along the grooves.

4. The jujube grading and screening device according to claim 3, characterized in that: The base is provided with a limiting groove on one side corresponding to the limiting protrusion, the limiting protrusion is inserted into the limiting groove and the limiting groove is arranged opposite to the sliding groove.

5. The jujube grading and screening device according to claim 1, characterized in that: The screening cylinder, the motor, and the base are all mounted on the frame. Mounting plates are provided on the frame at positions corresponding to both sides of the screening cylinder. Rotating shaft seats are provided on the mounting plates. Both ends of the transmission shaft are mounted on the rotating shaft seats. The motor is mounted on one side mounting plate and connected to the end of the transmission shaft. A bracket is also provided at the upper end of the frame. The bracket is suspended above the screening cylinder, and the base is mounted on the bracket.

6. The jujube grading and screening device according to claim 5, characterized in that: The frame is provided with a discharge chute below each grading screening section on the corresponding screening cylinder.

7. A jujube grading and screening device according to claim 6, characterized in that: A collection box is provided below the discharge chute.

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