Pulse dedusting type rotary vibration screen

Abstract

The utility model discloses a pulse dust removal type rotary vibration screen relates to the technical field of agricultural grain machinery, including support, the support cooperation installation has first edulcoration box, second edulcoration box and third edulcoration box, the first edulcoration box is connected with second edulcoration box through second channel, and the second edulcoration box is connected with third edulcoration box through first channel, the cooperation installation of third baffle is installed in the first edulcoration box, the cooperation installation of pulse generator is installed in first edulcoration box one side, the cooperation installation of dust cloth bag is installed in the first edulcoration box, pulse generator and dust cloth bag correspond cooperation setting, the third edulcoration box is opened in and has primary processing chamber and secondary processing chamber. The utility model can carry out twice fine grain ash separation process to the grain that meets the grain diameter standard, greatly promotes the cleanliness level of finished product grain, which not only satisfies the strict requirement of high purity of raw materials for subsequent deep processing procedure.

Description

Technical Field

[0001] This utility model relates to the field of agricultural and grain machinery technology, specifically to a pulse dust removal type rotary vibrating screen. Background Technology

[0002] The rotary vibrating screen is a high-precision fine powder screening machine. It features low noise, high efficiency, and quick screen replacement (3-5 minutes). With a fully enclosed structure, it is suitable for screening and filtering granular, powdery, and viscous materials. The rotary vibrating screen uses a vertical motor as the excitation source. Eccentric weights are installed at the upper and lower ends of the motor, which converts the motor's rotational motion into three-dimensional motion (horizontal, vertical, and inclined). This motion is then transmitted to the screen surface. Adjusting the phase angle at the upper and lower ends can change the trajectory of the material on the screen surface.

[0003] Currently, even after grains are screened by vibrating screens, their surface still retains noticeable dust and impurities. This prevents the material from meeting the cleanliness standards required for subsequent processes. This not only disrupts the smoothness of the production flow but also severely undermines the functional value of the vibrating screen as a core piece of equipment. This problem highlights the technical bottlenecks currently faced by screening equipment in terms of surface cleaning efficiency and secondary pollution prevention, directly and adversely affecting the overall quality of grain processing and the comprehensive performance of the equipment. Utility Model Content

[0004] To address the problem of dust on the surface of grain after screening by a rotary vibrating screen as mentioned in the background art, the purpose of this utility model is to provide a pulse dust removal rotary vibrating screen.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pulse dust removal type rotary vibrating screen, including a support frame, with several casters mounted on the lower side of the support frame. The support frame is connected to the rotary vibrating screen body via several booms. A mounting frame is installed inside the rotary vibrating screen body, and an eccentric motor is installed inside the mounting frame. A rotary vibrating chamber is installed on the upper side of the mounting frame via a buffer seat. A feed hopper is installed on the rotary vibrating screen body, with the lower end of the feed hopper extending into the rotary vibrating chamber. A first screen and a second screen are installed inside the rotary vibrating chamber. The vibrating chamber is equipped with a first guide plate, a second guide plate, and a third guide plate. Three discharge troughs are installed on one side of the vibrating chamber, and the three discharge troughs are configured to correspond one-to-one with the first guide plate, the second guide plate, and the third guide plate. A second impurity discharge trough is installed on one side of the vibrating screen body, and the second impurity discharge trough is configured to cooperate with the second guide plate. A first impurity removal box, a second impurity removal box, and a third impurity removal box are installed on the support. The first impurity removal box and the second impurity removal box are connected through a second channel, and the second impurity removal box and the third impurity removal box are connected through a first channel.

[0006] A third baffle is installed inside the first impurity removal box, a pulse generator is installed on one side of the first impurity removal box, and a dust collector bag is installed inside the first impurity removal box. The pulse generator and the dust collector bag are configured to cooperate with each other.

[0007] The third impurity removal box has a primary processing chamber and a secondary processing chamber. One end of the second impurity outlet is located inside the primary processing chamber. A rotating shaft is installed in the secondary processing chamber. A grain conveying spiral plate and several material feeding plates are installed on the rotating shaft. A dust collection plate is embedded in the secondary processing chamber. The dust collection plate is connected to the first channel through a connecting pipe. A fourth guide plate is installed in the third impurity removal box. The fourth guide plate is inclined and located above the grain conveying spiral plate.

[0008] Preferably, the first screen is located above the second screen, the mesh size of the first screen is smaller than that of the second screen, and both the first screen and the second screen are located between two corresponding discharge troughs.

[0009] Preferably, the second impurity removal box is located between the first impurity removal box and the second impurity removal box, and both the first impurity removal box and the second impurity removal box are equipped with ash discharge augers on their lower sides.

[0010] Preferably, the third baffle is configured in conjunction with the second channel, and a plurality of first baffles are installed in the first impurity removal box.

[0011] Preferably, two opposing second baffles are installed inside the second impurity removal box, forming a third channel between the two second baffles, and the two second baffles are respectively configured to cooperate with the second channel and the first channel.

[0012] Preferably, a first discharge trough and a third discharge trough are installed on one side of the main body of the vibrating screen. The first discharge trough is configured to cooperate with a first guide plate, and the third discharge trough is configured to cooperate with a third guide plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. In practical applications, this utility model can perform two fine grain-ash separation processes for grains that meet the grain diameter standards. First, qualified grains fall into the primary processing chamber, come into contact with the fourth guide plate, and undergo initial dust removal. Then, the grains continue to enter the secondary processing chamber. At this time, the drive motor starts, drives the rotating shaft to rotate, and then drives the spiral plate and the feeding plate to rotate synchronously. During this process, the grains and the dust-collecting plate generate friction, effectively promoting the separation of dust on the surface of the grains from their bodies. The separated dust-laden gas is introduced into the first channel through the connecting pipe for further processing, while the clean grains are finally discharged smoothly from the outlet. A major innovation of this device is its unique two-stage physical impurity removal mechanism. This design significantly reduces the impurity content in the grains and greatly improves the cleanliness level of the finished grains, enabling the cleanliness of the finished grains to reach the first-class standard of GB1351-2020. This not only meets the strict requirements of subsequent deep processing processes for high purity of raw materials, but also lays a solid foundation for the quality control of the entire grain processing process.

[0015] 2. The pulse bag filter dust collection system introduced in this utility model innovatively adopts a dual-stage impurity removal box design. By implementing a chamber-based processing strategy, it significantly enhances the efficiency of grain dust removal operations. This device achieves gradient-based efficient removal of impurities of different particle sizes through precise cooperation between the two stages of the impurity removal box: specifically, the second impurity removal box is responsible for intercepting large physical impurities such as large particles of sand and gravel, and straw fragments; while the first impurity removal box focuses on removing fine dust particles. This graded collection mechanism not only leads to a significant leap in dust removal efficiency, but more importantly, through the significant differences in particle size distribution and physical properties of the impurities collected in the two chambers, the system can accurately identify the specific composition and morphological characteristics of the mixed impurities. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the basic structure of the pulse dust removal type vibrating screen of this utility model.

[0017] Figure 2 This invention relates to a pulse dust removal type vibrating screen. Figure 1 The main view.

[0018] Figure 3 This invention relates to a pulse dust removal type vibrating screen. Figure 1 A sectional view.

[0019] Figure 4 This invention relates to a pulse dust removal type vibrating screen. Figure 2 or Figure 3 AA sectional view.

[0020] Figure 5 This invention relates to a pulse dust removal type vibrating screen. Figure 4 Enlarged view of part A.

[0021] Figure 6 This is a schematic diagram of the internal structure of the third impurity removal box of the pulse dust removal type vibrating screen of this utility model.

[0022] Figure 7 This is a flow diagram of grain and dust in the pulse dust removal type vibrating screen of this utility model.

[0023] In the diagram: 101, support frame; 102, casters; 103, main body of the vibrating screen; 104, boom; 105, feed hopper; 106, first waste outlet chute; 107, third waste outlet chute; 108, second waste outlet chute; 201, first waste removal box; 202, second waste removal box; 203, third waste removal box; 2031, primary processing chamber; 2032, secondary processing chamber; 204, first channel; 205, connecting pipe; 206, ash discharge auger; 207, rotating shaft; 208, grain conveying spiral plate; 209. 210. Feeding plate; 213. Dust collection plate; 214. Pulse generator; 215. Dust collector bag; 216. Second channel; 217. First baffle; 218. Second baffle; 219. Third channel; 220. Fourth guide plate; 301. Vibrating chamber; 302. Mounting frame; 303. Eccentric motor; 304. Buffer seat; 305. First guide plate; 306. Second guide plate; 307. Third guide plate; 308. First screen; 309. Second screen; 310. Discharge chute. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-6 As shown, the pulse dust removal type vibrating screen provided in this embodiment includes a support 101. Several moving wheels 102 are installed on the lower side of the support 101. Two sets of moving wheels 102 are configured at the bottom of the support 101 to realize flexible movement and working positioning of the equipment. The support 101 is connected to the main body through four sets of rubber universal joint shock-absorbing arms 104, which effectively isolates more than 80% of vibration transmission.

[0026] An installation frame 302 is installed inside the main body 103 of the vibrating screen. An eccentric motor 303 is installed inside the installation frame 302. A vibrating chamber 301 is installed on the upper side of the installation frame 302 via a buffer seat 304. A feed hopper 105 is installed on the main body 103 of the vibrating screen. The lower end of the feed hopper 105 extends into the vibrating chamber 301. A first screen 308 and a second screen 309 are installed inside the vibrating chamber 301. The first screen 308 is located above the second screen 309. The mesh count of the first screen 308 is smaller than that of the second screen 309. In this embodiment, the first screen 308 is a 20-mesh polyurethane anti-clogging screen, and the second screen 309 is a 40-mesh stainless steel woven screen.

[0027] The main body 103 of the rotary vibrating screen is equipped with a first guide plate 305, a second guide plate 306 and a third guide plate 307. Three discharge troughs 310 are installed on one side of the rotary vibrating chamber 301. The first screen 308 and the second screen 309 are located between two corresponding discharge troughs 310. The three discharge troughs 310 are configured to correspond one-to-one with the first guide plate 305, the second guide plate 306 and the third guide plate 307. The first guide plate 305, the second guide plate 306 and the third guide plate 307 are made of 2mm thick stainless steel plates with an inclination angle of 35° and a Teflon coating on the surface to prevent sticking.

[0028] A second discharge trough 108 is installed on one side of the vibrating screen body 103. The second discharge trough 108 is configured to cooperate with the second guide plate 306. A first discharge trough 106 and a third discharge trough 107 are installed on one side of the vibrating screen body 103. The first discharge trough 106 is configured to cooperate with the first guide plate 305, and the third discharge trough 107 is configured to cooperate with the third guide plate 307. The second discharge trough 108 is for materials with qualified grain size, the first discharge trough 106 is for the discharge of large particles, and the third discharge trough 107 is for the discharge of small particles.

[0029] The bracket 101 is equipped with a first impurity removal box 201, a second impurity removal box 202 and a third impurity removal box 203. The second impurity removal box 202 is located between the first impurity removal box 201 and the second impurity removal box 202. The first impurity removal box 201 and the second impurity removal box 202 are connected by a second channel 215. The second impurity removal box 202 and the third impurity removal box 203 are connected by a first channel 204. The lower sides of the first impurity removal box 201 and the second impurity removal box 202 are equipped with ash discharge augers 206.

[0030] A third baffle 219 is installed inside the first impurity removal box 201. The third baffle 219 and the second channel 215 work together to effectively guide the flow of materials. At the same time, multiple first baffles 216 are distributed inside the box. They work together to further improve the separation efficiency of impurities. The pulse generator 213 is fixedly installed on one side of the box and forms a dust removal system with the built-in dust collector bag 214. The pulse generator 213 periodically cleans the dust collector bag 214 to ensure the continuous and efficient operation of the bag.

[0031] The second impurity removal box 202 has two opposing second baffles 217 installed inside, forming a third channel 218 between the two second baffles 217. The third channel 218 creates a Venturi effect, which accelerates dust settling and enhances the continuity of the impurity removal process.

[0032] The third impurity removal box 203 contains a primary processing chamber 2031 and a secondary processing chamber 2032. One end of the second impurity outlet 108 extends into the primary processing chamber 2031 to facilitate preliminary impurity separation. In the secondary processing chamber 2032, the rotating shaft 207 carries the grain conveying spiral plate 208 and several material feeding plates 209. These components rotate in tandem, not only achieving stable material conveying but also promoting mixing and dispersion of materials, thus improving the processing effect. In addition, the dust suction plate 210 is tightly embedded in the inner wall of the chamber and connected to... Pipe 205 is connected to the first channel 204, forming a high-efficiency dust removal circuit, which effectively captures and removes fine particles floating in the secondary processing chamber 2032. In order to optimize the material flow, the third impurity removal box 203 is also equipped with a fourth guide plate 220 that is inclined and located above the grain conveying spiral plate 208. It guides the material to slide down along the predetermined path in a reasonable way, ensuring the smoothness and efficiency of the entire impurity removal process. The dust suction plate 210 has filter holes on the side near the grain conveying spiral plate 208, and the dust suction plate 210 has a cavity inside.

[0033] It should be noted that, referring to Figure 7 (The large black arrows indicate the flow direction of the grain, the small white arrows indicate the airflow direction carrying dust, and the small black arrows indicate the deposition direction of the dust.) The grain to be screened enters the vibrating chamber 301 through the feed hopper 105, where it undergoes three-stage sorting under the synergistic action of the double screens: large particles of impurities are discharged from the system through the first discharge trough 106; small particles of impurities are output through the third discharge trough 107; and grain that meets the particle size requirements enters the primary processing chamber 2031 through the second discharge trough 108. It should be noted that at this point, trace amounts of small particles of impurities and dust still adhere to the surface of the qualified material. After the grain that meets the particle size requirements enters the primary processing chamber 2031, it is then processed according to... Figure 5The grain first falls onto the inclined fourth guide plate 220 and moves in direction a. During this process, the grain undergoes its first dust removal treatment. Through the negative pressure airflow generated by the pulse generator 213, surface dust and some loose impurities are effectively removed. The grain, having completed the first dust removal, then falls into the secondary processing chamber 2032 for a second effective removal of surface impurities. The secondary processing chamber 2032 is equipped with a grain conveying spiral plate 208 and a feeding plate 209. The corresponding motor controls the rotation of the grain conveying spiral plate 208 to transport the grain in direction b. During this process, the grain comes into contact with the perforated dust collection plate 210, effectively removing the dust adhering to the grain particles. Surface dust and impurities, and the separated suspended impurities are captured by the dust collection plate 210 and introduced into the second impurity removal box 202 through the connecting pipe 205. In the third channel 218 of the second impurity removal box 202, gas-solid separation is achieved through pressure gradient changes: firstly, the pressure drop change is used to complete the primary settling of large dust particles; then, the first baffle 216 guides the airflow to form controllable turbulence, promoting the collision and aggregation of submicron dust; finally, the dust collection bag 214 performs terminal fine filtration, and the pulse back-flushing system periodically removes the dust accumulated in the filter bag to ensure continuous and efficient filtration performance. The collected impurities are centrally transported through the closed ash discharge auger 206 to achieve the environmental protection treatment requirement of "no impurities on the ground" throughout the entire process.

[0034] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulse dust collector type rotary vibrating screen, including a support (101), a number of casters (102) are installed on the lower side of the support (101), the support (101) is connected to the rotary vibrating screen body (103) through a number of booms (104), a mounting frame (302) is installed inside the rotary vibrating screen body (103), an eccentric motor (303) is installed inside the mounting frame (302), a rotary vibrating chamber (301) is installed on the upper side of the mounting frame (302) through a buffer seat (304), and a feed hopper (105) is installed on the rotary vibrating screen body (103). The lower end of the feed hopper (105) extends into the vibrating chamber (301), where a first screen (308) and a second screen (309) are installed. A first guide plate (305), a second guide plate (306), and a third guide plate (307) are installed within the vibrating screen body (103). Three discharge troughs (310) are installed on one side of the vibrating chamber (301), and the three discharge troughs (310) are correspondingly arranged with the first guide plate (305), the second guide plate (306), and the third guide plate (307). The characteristic feature is that... A second waste discharge trough (108) is installed on one side of the main body (103) of the rotary vibrating screen. The second waste discharge trough (108) is configured to cooperate with the second guide plate (306). A first waste removal box (201), a second waste removal box (202) and a third waste removal box (203) are installed on the support (101). The first waste removal box (201) and the second waste removal box (202) are connected through a second channel (215). The second waste removal box (202) and the third waste removal box (203) are connected through a first channel (204). A third baffle (219) is installed inside the first impurity removal box (201), a pulse generator (213) is installed on one side of the first impurity removal box (201), and a dust collector bag (214) is installed inside the first impurity removal box (201). The pulse generator (213) and the dust collector bag (214) are correspondingly matched. The third impurity removal box (203) is provided with a primary processing chamber (2031) and a secondary processing chamber (2032). One end of the second impurity discharge trough (108) is located inside the primary processing chamber (2031). A rotating shaft (207) is installed in the secondary processing chamber (2032). A grain conveying spiral plate (208) and several material feeding plates (209) are installed on the rotating shaft (207). A dust collection plate (210) is embedded in the secondary processing chamber (2032). The dust collection plate (210) is connected to the first channel (204) through a connecting pipe (205). A fourth guide plate (220) is installed in the third impurity removal box (203). The fourth guide plate (220) is inclined and located above the grain conveying spiral plate (208).

2. The pulse dewatering rotary screen according to claim 1, wherein: The first screen (308) is located above the second screen (309). The mesh count of the first screen (308) is smaller than that of the second screen (309). Both the first screen (308) and the second screen (309) are located between two corresponding discharge troughs (310).

3. The pulse dewatering rotary screen of claim 1, wherein: The second impurity removal box (202) is located between the first impurity removal box (201) and the second impurity removal box (202). The first impurity removal box (201) and the second impurity removal box (202) are both equipped with ash discharge augers (206) on their lower sides.

4. The pulse dewatering rotary screen of claim 1, wherein: The third baffle (219) is configured in conjunction with the second channel (215), and a number of first baffles (216) are installed in the first impurity removal box (201).

5. The pulse dewatering rotary screen of claim 1, wherein: The second impurity removal box (202) is equipped with two opposing second baffles (217), and a third channel (218) is formed between the two second baffles (217). The two second baffles (217) are respectively configured to cooperate with the second channel (215) and the first channel (204).

6. The pulse dewatering rotary screen of claim 1, wherein: The vibrating screen body (103) is equipped with a first discharge trough (106) and a third discharge trough (107) on one side. The first discharge trough (106) is configured in conjunction with the first guide plate (305), and the third discharge trough (107) is configured in conjunction with the third guide plate (307).

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