Anti-blocking blanking device of drum screen

Abstract

The utility model discloses an anti-blocking blanking device of a drum screen. The anti-blocking blanking device comprises a screen drum and a collecting bin arranged on the outer side of the screen drum, a circle of teeth are arranged on the outer ring of the middle of the screen drum; a shaft connected through a bearing seat is arranged on the collecting bin; a gear meshed with the teeth is arranged on the shaft; at least one elastic knocking strip is arranged on the shaft; the length of the elastic knocking strip is larger than the distance from the shaft to the collecting bin and the distance from the shaft to the screen drum. The elastic knocking strips are arranged in the collecting bin, the screen drum and the collecting bin are knocked, and the technical problems that in the prior art, screen meshes of a drum screen are prone to being blocked, and sundries cannot fall smoothly are effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mesh screen equipment, relates to a drum screen for grain, and specifically relates to a drum screen anti-blocking and material dropping device. Background Art

[0002] After corn is threshed, it is mixed with broken corn kernels, straw and other debris. During the harvesting, drying and transportation processes, it is also mixed with some sand and gravel and broken corn kernels, so it must be screened before storage.

[0003] At present, a cylindrical screen is used. The cylindrical screen includes a drum made of a mesh or a perforated plate, with a feed port at one end and a discharge port at the other end. A debris collection bin is provided at the bottom. The drum rotates through a through shaft or teeth arranged around the circumference. The debris collection bin at the bottom is an inclined collection plate with a storage compartment at the end. The debris falls from the screen of the drum, then falls into the collection plate and slides down, and is collected in the storage compartment.

[0004] The cylindrical screen of the prior art has the following disadvantages during use: broken corn kernels and straws are easy to clog the screen mesh; the falling fine powder is light and accumulates at the bottom of the collection bin, so it does not fall smoothly. Utility Model Content

[0005] The utility model aims to solve the technical problems in the prior art that the screen mesh of a drum screen for grain is easily blocked and debris cannot fall smoothly, and to provide a drum screen anti-blocking and material dropping device to solve the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for preventing material from being blocked or falling off a cylindrical screen comprises a screen cylinder and a collecting bin arranged outside the screen cylinder; a circle of teeth is arranged on the middle outer ring of the screen cylinder; a shaft connected via a bearing seat is arranged on the collecting bin; a gear meshing with the teeth is arranged on the shaft; at least one elastic knocking strip is arranged on the shaft; the length of the elastic knocking strip is greater than the distance from the shaft to the collecting bin and the distance from the shaft to the screen cylinder.

[0008] Furthermore, the shaft is located above or obliquely above the screen drum.

[0009] Furthermore, the collecting bin is provided with an arc plate and a knocking plate corresponding to the elastic knocking strip.

[0010] Furthermore, a front support leg and a rear support leg are respectively provided below the collecting bin; the rear support leg is a sleeve support leg and is provided with a buffer spring.

[0011] Furthermore, the sieve drum is multi-stage, and the collecting bin is provided with corresponding discharge ports.

[0012] Furthermore, a transmission shaft is provided in the middle of the screen drum and passes through the transmission shaft; a support rod is provided on the transmission shaft and is connected to the screen drum; the transmission shaft drives the screen drum to rotate and bears the weight of the screen drum.

[0013] The present application arranges an elastic knocking bar in the collecting bin to knock the screen drum and the collecting bin, which effectively solves the technical problems of the existing cylindrical screen that the screen mesh is easily blocked and the debris does not fall smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a side view of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 3 It is a working schematic diagram of the elastic knocking strip of the utility model.

[0017] In the figure, 1. collecting bin 2. knocking plate 3. bearing seat 4. elastic knocking strip 5. arc plate 6. shaft 7. gear 8. screen drum 9. teeth 10. transmission shaft 11. support rod 12. buffer spring 13. rear support leg 14. front support leg 15. discharge port. Implementation

[0018] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the utility model, it is obvious that the embodiments described below are part of the embodiments of the utility model, rather than 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.

[0019] Embodiment 1, according to Figure 1-2 A device for preventing a cylindrical screen from blocking or dropping materials comprises a screen drum 8 and a collecting bin 1 arranged outside the screen drum; a circle of teeth 9 is arranged on the middle outer ring of the screen drum; a shaft 6 connected through a bearing seat 3 is arranged on the collecting bin; a gear 7 meshing with the teeth is arranged on the shaft 6; at least one elastic knocking strip 4 is arranged on the shaft; the length of the elastic knocking strip is greater than the distance from the shaft to the collecting bin and the distance from the shaft to the screen drum.

[0020] The shaft 6 is located above or obliquely above the sieve drum 8 , and the shaft 6 and the sieve drum 8 are distributed in parallel.

[0021] The collecting bin 1 is provided with an arc plate 5 and a knocking plate 2 corresponding to the elastic knocking strip 4. The arc plate 5 is used for the elastic knocking strip 4 to bend and store force, and knock on the screen drum 8; the elastic knocking strip 4 bends and stores force on the screen drum 8, and knocks the knocking plate 2.

[0022] The collecting bin 1 is provided with a front leg 14 and a rear leg 13 below, and the rear leg is a sleeve leg and is provided with a buffer spring 12. The rear leg 13 and the buffer spring 12 can allow the collecting bin 1 to deform when knocked and vibrated, thereby reducing the impact on the legs.

[0023] The sieve drum is multi-stage, and the collecting bin is provided with corresponding discharge ports 15.

[0024] A transmission shaft 10 is provided in the middle of the screen drum and penetrates therethrough. A support rod 11 is provided on the transmission shaft and is connected to the screen drum. The transmission shaft drives the screen drum to rotate and bears the weight of the screen drum.

[0025] Both ends of the transmission shaft 10 are provided with bearing seats, as well as components such as a transmission motor and a gearbox. These components belong to conventional connection methods in the field and will not be described in detail.

[0026] The elastic knocking strip 4 is made of a material with elastic deformation, firmness and wear resistance, and is made of rubber, nylon and steel wire twisted together.

[0027] Embodiment 2, according to Figure 3 When in use, the transmission shaft 10 drives the screen drum 8 to rotate to screen the material; the screen drum 8 drives the shaft 6 to rotate through the teeth 9 and the gear 7; the shaft 6 drives the elastic knocking bar 4 to work. Specifically, the elastic knocking bar 4 bends on the arc plate 5 to store force; the elastic knocking bar 4 knocks on the screen drum 8; the elastic knocking bar 4 bends on the screen drum 8 to store force; the elastic knocking bar 4 knocks on the knocking plate 2.

[0028] The knocking plate 2 transfers force to the plate at the bottom of the collecting bin 1 , helping the debris screened thereon to enter the discharge port 15 .

[0029] The present application arranges an elastic knocking bar in the collecting bin to knock the screen drum and the collecting bin, which effectively solves the technical problems of the existing cylindrical screen that the screen mesh is easily blocked and the debris does not fall smoothly.

Claims

1. A cylindrical screen anti-blocking and material dropping device, comprising a screen cylinder and a collecting bin arranged outside the screen cylinder; characterized in that: The middle outer ring of the screen cylinder is provided with a circle of teeth; the collecting bin is provided with a shaft connected through a bearing seat; the shaft is provided with a gear meshing with the teeth; the shaft is provided with at least one elastic knocking strip; the length of the elastic knocking strip is greater than the distance from the shaft to the collecting bin and the distance from the shaft to the screen cylinder.

2. The device for preventing the cylindrical screen from blocking and dropping materials according to claim 1 is characterized in that: The shaft is located above or obliquely above the screen drum.

3. The device for preventing the cylindrical screen from blocking and dropping materials according to claim 1 is characterized in that: The collecting bin is provided with an arc plate and a knocking plate corresponding to the elastic knocking strip.

4. The device for preventing the cylindrical screen from blocking and dropping materials according to claim 1 is characterized in that: A front support leg and a rear support leg are respectively arranged below the collecting bin; the rear support leg is a sleeve support leg and is provided with a buffer spring.

5. The device for preventing the cylindrical screen from blocking and dropping materials according to claim 4 is characterized in that: The sieve drum is multi-stage, and the collecting bin is provided with corresponding discharge ports.

6. The device for preventing the cylindrical screen from blocking and dropping materials according to claim 4 is characterized in that: A transmission shaft is provided in the middle of the screen drum. A support rod is provided on the transmission shaft and connected with the screen drum. The transmission shaft drives the screen drum to rotate and bears the weight of the screen drum.

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