Net rack structure for pneumatic net cleaning

Abstract

The utility model discloses a pneumatic net cleaning net rack structure, which relates to the technical field of net rack structures, and comprises a net rack and a screen fixed at the top of the net rack, the net rack is provided with a clamping part, a connecting part and symmetrical telescopic parts, the connecting part is positioned between the two telescopic parts, the clamping part is positioned at the bottom of the telescopic parts, and the connecting part is positioned at the bottom of the telescopic parts. The screen is connected to the top of the telescopic part, the side, close to the axis, of the clamping part is connected with a conduction plate, and the other end of the conduction plate is connected with an outer waveguide ring. According to the net rack structure of the pneumatic net cleaning device, the pneumatic vibrator is arranged on the outer waveguide ring, the screening capacity of the screen on materials is improved through the interaction of two strands of vibration force, meanwhile, airflow discharged by the pneumatic vibrator can impact the screen on the top, materials blocked in screen holes are blown out, and therefore the screening effect is improved. And the condition that the center position of the screen is blocked by materials is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of grid structures, and more specifically, to a grid structure with pneumatic screen cleaning. Background Art

[0002] The circular vibrating screen is a commonly used industrial screening device, mainly used for the classification and screening of granular materials. It generates a rotational force through a vibrating motor or other exciting devices, causing the screen box to move in a circular or elliptical trajectory, thereby realizing the screening of materials. The grid structure inside the circular vibrating screen is one of its key components, used to support the screen mesh and ensure that the materials can be evenly distributed and flow during the screening process.

[0003] The current filtering structure of the circular vibrating screen still has the following problems when in use:

[0004] 1. When screening materials, the screen mesh is entirely driven by the vibrating motor at the bottom of the equipment to vibrate. When the vibration force is transmitted to the top screen mesh, it will weaken, making the screen mesh unable to effectively screen the materials;

[0005] 2. The grid structure at the bottom plays a supporting role for the top screen mesh. Since the grid structure uses a rigid structure for support, under long-term vibration, the connection between the internal support ring and the external support ring is prone to metal fatigue, thereby reducing the service life of the screen mesh structure.

[0006] Therefore, it is necessary to propose a grid structure with pneumatic screen cleaning to solve the above problems. Summary of the Utility Model

[0007] In view of the above problems, the utility model provides a grid structure with pneumatic screen cleaning; it has the function of improving the screening ability of the screen mesh, and at the same time, the discharged air flow can clean the screen mesh, avoiding the situation of blockage in the central area of the screen mesh.

[0008] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0009] A grid structure with pneumatic screen cleaning, including a grid and a screen mesh fixed on the top of the grid. The grid is provided with a clamping part, a connecting part, and symmetric telescopic parts. The connecting part is located between the two telescopic parts, the clamping part is located at the bottom of the telescopic part, the screen mesh is connected to the top of the telescopic part, one side of the clamping part close to the axis is connected with a conduction plate, and the other end of the conduction plate is connected with an outer waveguide ring;

[0010] One side of the inner ring surface of the outer waveguide ring is connected with a connecting rod, the other end of the connecting rod is connected with an inner waveguide ring, and one side of the connecting rod is connected with a jet strip;

[0011] The bottom of the outer waveguide ring is connected with a mounting plate. The bottom of the mounting plate is connected with a pneumatic vibrator through bolts. The air inlet end of the pneumatic vibrator is connected with an external air supply device through a pipeline. A communicating pipe is connected between the air outlet end of the pneumatic vibrator and the air jet bar.

[0012] Preferably, an air flow channel is arranged inside the air jet bar. A plurality of air outlet openings connected to the air flow channel are arranged at the top of the air jet bar. A rubber cover is connected to the top air outlet opening of the air jet bar. A cross opening for air outlet is arranged on the rubber cover.

[0013] Preferably, a bending part is arranged in the middle of the conduction plate. Connecting components are connected to both ends of the conduction plate.

[0014] Preferably, the connecting component includes a fixing plate and symmetrical arc-shaped plates. The symmetrical arc-shaped plates are connected to one side of the fixing plate close to the conduction plate. The side of the arc-shaped plate away from the fixing plate is connected to the conduction plate. The fixing plate is connected to the outer ring surface of the outer waveguide ring.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. A pneumatic vibrator is arranged on the outer waveguide ring of the device. Through the interaction of two vibration forces, the screening ability of the sieve mesh for materials is increased. At the same time, the air flow discharged by the pneumatic vibrator can impact the sieve mesh at the top, thereby blowing out the materials blocked in the sieve holes and avoiding the situation that the center position of the sieve mesh is blocked by materials.

[0017] 2. Connecting components are arranged at both ends of the conduction plate of the device. The connecting components can replace the original rigid connection through the bending deformation of the arc-shaped plates, avoiding the situation that the connection at both ends of the conduction plate breaks due to metal fatigue, and at the same time increasing the extension ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the top view in the present utility model;

[0019] Figure 2 is the partial cross-sectional view in the present utility model;

[0020] Figure 3 is the schematic diagram of the structure of the air jet bar and the pneumatic vibrator in the present utility model;

[0021] Figure 4 is the schematic diagram of the structure of the grid frame and the conduction plate in the present utility model;

[0022] Figure 5 is the schematic diagram of the structure of the conduction plate and the connecting component in the present utility model;

[0023] Figure 6 Schematic diagram of the inner waveguide ring and jet strip structures in the present utility model.

[0024] Reference signs:

[0025] 101, grid frame; 102, screen mesh; 103, clamping part; 104, connecting part; 105, telescopic part; 106, conduction plate; 107, outer waveguide ring; 108, connecting rod; 109, inner waveguide ring; 110, jet strip; 111, mounting plate; 112, pneumatic vibrator; 113, connecting pipe; 114, air flow channel; 115, rubber cover; 116, bending part; 117, fixing plate; 118, arc plate. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figure 1-6 , a grid frame structure for pneumatic screen cleaning, including a grid frame 101 and a screen mesh 102 fixed to the top of the grid frame 101. A clamping part 103, a connecting part 104, and symmetric telescopic parts 105 are provided on the grid frame 101. Refer to Figure 4 , the grid frame 101 is installed between two support frames on a circular vibrating screen. Usually, the two support frames are connected by a clamp. The grid frame 101 can be installed by inserting the clamping part 103 between the two support frames. The connecting part 104 is located between the two telescopic parts 105, and the clamping part 103 is located at the bottom of the telescopic part 105. The connecting part 104 is used to connect the conduction plate 106. When the circular vibrating screen vibrates, the telescopic part 105 transmits the vibration to the screen mesh 102. By the up and down telescoping of the telescopic part 105, metal fatigue caused by the rigid connection of the traditional grid frame 101 is avoided. The screen mesh 102 is connected to the top of the telescopic part 105. One side of the clamping part 103 close to the axis is connected to a conduction plate 106. The conduction plate 106 is connected between two vibration forces. The external vibration force is generated by the vibration motor at the bottom of the circular vibrating screen, and the internal vibration force is the vibration generated by the pneumatic vibrator 112. The other end of the conduction plate 106 is connected to an outer waveguide ring 107;

[0028] Refer to Figure 4, a connecting rod 108 is connected to the inner ring surface of the outer waveguide ring 107, and the other end of the connecting rod 108 is connected to the inner waveguide ring 109. The connecting rod 108 is used to connect the outer waveguide ring 107 and the inner waveguide ring 109. A jet strip 110 is connected to one side of the connecting rod 108. In another embodiment, the jet strip 110 can be replaced with an air knife;

[0029] When the vibration force generated by the vibration motor at the bottom of the circular vibrating screen is transmitted to the top screen 102, attenuation will occur, resulting in a decrease in the screening capacity of the top screen 102. The following provides a structure for enhancing the vibration force: Refer to Figure 3 and Figure 4 , a mounting plate 111 is connected to the bottom of the outer waveguide ring 107. The mounting plate 111 is welded to the outer waveguide ring 107 and is used for installing the pneumatic vibrator 112. The bottom of the mounting plate 111 is bolted with a pneumatic vibrator 112. The air inlet end of the pneumatic vibrator 112 is connected to an external air supply device through a pipeline. Specifically, the air inlet ends of multiple pneumatic vibrators 112 are connected to the same intake pipeline. A connecting pipe 113 is connected between the air outlet end of the pneumatic vibrator 112 and the jet strip 110. After the air flow enters the pneumatic vibrator 112, it can cause the pneumatic vibrator 112 to vibrate, thereby causing the outer waveguide ring 107 to vibrate. By mixing the two vibration forces, the screening capacity of the screen 102 for materials is increased.

[0030] The air flow entering the pneumatic vibrator 112 will be discharged from the downward air outlet of the pneumatic vibrator 112. The following provides a structure that can utilize the discharged gas: Specifically, refer to Figure 3 , an air flow channel 114 is opened inside the jet strip 110, and multiple air outlet openings connected to the air flow channel 114 are opened at the top of the jet strip 110. The air flow discharged from the pneumatic vibrator 112 will be discharged from the rubber cover 115. The discharged air flow can have an impact on the top screen 102, reducing the situation where the center position of the screen 102 is blocked by materials. A rubber cover 115 is connected to the top air outlet of the jet strip 110, and a cross opening for air outlet is opened on the rubber cover 115. The cross opening at the top of the rubber cover 115 is in a closed state when there is no air flow, and is in an open state when there is air flow. It should be noted that the pneumatic vibrator 112 has several different working states, so the discharged air flow also has different states, such as continuous and pulsed. Regardless of which form, it does not affect the air outlet effect of the rubber cover 115.

[0031] Specifically, refer to Figure 5 , a bending portion 116 is provided in the middle of the conduction plate 106. The conduction plate 106 is located between the outer waveguide ring 107 and the inner waveguide ring 109. The bending portion 116 can offset the action of the two vibration forces through deformation. Both ends of the conduction plate 106 are connected with connection components.

[0032] During use, at the connection between the conduction plate 106 and the grid 101 or the outer waveguide ring 107, metal fatigue is likely to occur due to the frequent left - right deformation of the conduction plate 106, resulting in fracture. The following provides a structure that can reduce the metal fatigue at the connection: Specifically, referring to Figure 5 , the connection component includes a fixing plate 117 and symmetric arc plates 118. The symmetric arc plates 118 are connected to the side of the fixing plate 117 close to the conduction plate 106. The arc plates 118 are bent. The side of the bent arc plate 118 away from the fixing plate 117 is connected to the conduction plate 106. The fixing plate 117 is connected to the outer ring surface of the outer waveguide ring 107. When the conduction plate 106 sways left and right due to vibration, the arc plate 118 can bend to offset the rigid connection at the joint.

[0033] In this embodiment, the grid 101 can be installed between two support frames of the circular vibrating screen through the clamping portion 103 and fixed by a clamp. The external air supply device supplies air flow to the pneumatic vibrator 112 through a pipeline, causing the pneumatic vibrator 112 to vibrate. The screening and filtering ability of the screen 102 is improved through two - way vibration. The air flow discharged from the bottom of the pneumatic vibrator 112 can impact the top screen 102 through the air jet strip 110.

[0034] The above - mentioned implementation manners are only the preferred implementation manners of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non - substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the protection scope required by the present utility model.

Claims

1. A grid structure for pneumatic screen cleaning, comprising a grid (101) and a screen (102) fixed to the top of the grid (101), characterized in that: A clamping part (103), a connecting part (104) and symmetric telescopic parts (105) are provided on the grid frame (101). The connecting part (104) is located between the two telescopic parts (105). The clamping part (103) is located at the bottom of the telescopic part (105). The screen (102) is connected to the top of the telescopic part (105). A conduction plate (106) is connected to one side of the clamping part (103) close to the axis. The other end of the conduction plate (106) is connected to an outer waveguide ring (107). A connecting rod (108) is connected to the inner ring surface of the outer waveguide ring (107). The other end of the connecting rod (108) is connected to an inner waveguide ring (109). An air jet strip (110) is connected to one side of the connecting rod (108). An installation plate (111) is connected to the bottom of the outer waveguide ring (107). A pneumatic vibrator (112) is connected to the bottom of the installation plate (111) by bolts. The air inlet end of the pneumatic vibrator (112) is connected to an external air supply device through a pipeline. A communication pipe (113) is connected between the air outlet end of the pneumatic vibrator (112) and the air jet strip (110).

2. The grid structure for pneumatic mesh cleaning according to claim 1, characterized in that: An air flow channel (114) is formed inside the air jet strip (110). A plurality of air outlet openings connected to the air flow channel (114) are formed at the top of the air jet strip (110). A rubber cover (115) is connected to the top air outlet opening of the air jet strip (110). A cross opening for air outlet is formed on the rubber cover (115).

3. The grid structure for pneumatic mesh cleaning according to claim 1, characterized in that: A bending part (116) is provided in the middle of the conduction plate (106). Connecting components are connected to both ends of the conduction plate (106).

4. The grid structure for pneumatic screen cleaning according to claim 3, characterized in that: The connecting components include a fixing plate (117) and symmetric arc-shaped plates (118). The symmetric arc-shaped plates (118) are connected to one side of the fixing plate (117) close to the conduction plate (106). The side of the arc-shaped plate (118) away from the fixing plate (117) is connected to the conduction plate (106). The fixing plate (117) is connected to the outer ring surface of the outer waveguide ring (107).

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