A multi-stage self-cleaning filtering device of a bulk material pneumatic conveying system

Abstract

The utility model relates to the technical field of pneumatic conveying, and disclose a multistage self -cleaning filter device of bulk material pneumatic conveying system, it includes the casing, one side of casing is fixedly connected with motor, the output of motor extends to the inside of casing and is fixedly connected with transmission rod, one end of transmission rod is rotatably connected with casing, the outside of transmission rod is fixedly provided with cam, both sides of casing inside are all connected with support plate symmetrically, the side corresponding of upper and lower two support plates located in the same side is fixedly connected with limit rod, the downside of limit rod outside is equipped with first filter screen, the upside of limit rod outside is equipped with second filter screen, the utility model has realized to the multistage filtration of material, can effectively filter the impurity and dust of different particle size, can clean the dust of first filter screen and second filter screen surface attachment in time, has reduced maintenance cost, also is convenient to the dust in the collection frame and carries out the cleaning, improved the use convenience of device.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic conveying technology, specifically a multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials. Background Technology

[0002] During the pneumatic conveying of bulk materials, a large amount of dust is generated. In order to prevent dust from damaging the equipment and to avoid dust pollution of the environment, a filtration device is usually required in the conveying system.

[0003] Existing filtration devices are mostly single-stage filters with limited filtration accuracy. Furthermore, the filter elements are prone to clogging after a period of use, requiring regular manual cleaning or replacement. This not only increases maintenance costs but also affects the continuous operation of the conveying system. In addition, it is inconvenient for staff to quickly collect the dust after cleaning, which poses a hazard to the health of operators and the environment.

[0004] Therefore, developing a filtration device with multi-stage filtration function and self-cleaning capability is of great significance for improving the operating efficiency and environmental performance of pneumatic conveying systems for bulk materials. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials, which effectively solves the problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials, comprising a housing, a motor fixedly connected to one side of the housing, the output end of the motor extending into the interior of the housing and fixedly connected to a transmission rod, one end of the transmission rod being rotatably connected to the housing, a cam fixedly sleeved on the outside of the transmission rod, support plates symmetrically connected to both sides inside the housing, a limiting rod fixedly connected to one side of the upper and lower support plates on the same side, a first filter screen sleeved on the lower side outside the limiting rod, a second filter screen sleeved on the upper side outside the limiting rod, a first spring fixedly connected to each of the four corners of one side of the first and second filter screens, one side of the first spring being fixedly connected to one side of the support plate, the first spring being sleeved on the outside of the limiting rod, a collection frame provided inside the housing, and a snap-fit ​​mechanism provided through the housing on one side of the collection frame.

[0007] Preferably, the snap-fit ​​mechanism includes a hollow base fixedly installed on one side of the collection frame. Support rods are fixedly installed on both sides inside the hollow base. Movable plates are movably sleeved on both sides outside the support rods. Positioning rods are fixedly installed on the side of the two movable plates that are far apart from each other. The positioning rods on the upper and lower sides extend through to the outside of the hollow base.

[0008] Preferably, a pad is fixedly installed on one side of the movable plate, and an inclined surface is opened on one side of the pad. A handle is fixedly installed on one side of the hollow base. A U-shaped frame is movably fitted on the outside of the handle. One side of the U-shaped frame extends into the interior of the hollow base and is fixedly connected to a U-shaped inclined plate that matches the inclined surface.

[0009] Preferably, a sealing gasket is fixedly installed on one side of the hollow base, and a second spring is movably sleeved on the outer side of each of the two support rods, with the two sides of the second spring being fixedly connected to the movable plates on both sides respectively.

[0010] Preferably, the hollow base is provided with a locking block at both the top and bottom. One side of the locking block is fixedly connected to the housing, and a positioning groove adapted to the positioning rod is provided on one side of the locking block.

[0011] Preferably, an air inlet pipe is fixedly connected to one side of the housing, a flange is provided on the outside of the air inlet pipe, and an exhaust pipe is fixedly connected to the side of the housing away from the air inlet pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model achieves multi-stage filtration of materials through the setting of a first filter screen and a second filter screen, which can effectively filter impurities and dust of different particle sizes. The rotation of the motor drives the transmission rod to rotate, the transmission rod drives the cam to rotate, and the rotation of the cam drives the first filter screen and the second filter screen to move away from each other. At the same time, the first spring is compressed. The elastic force of the first spring can reset the first filter screen and the second filter screen, which can clean the dust attached to the surface of the first filter screen and the second filter screen in time, reducing maintenance costs.

[0014] 2. This new type of device moves to one side by pressing the U-shaped frame, which in turn moves the U-shaped inclined plate to one side. The U-shaped inclined plate, through its matching inclined surface, moves the pads closer together, and the pads move the moving plate closer together. At the same time, the second spring is compressed, causing the positioning rod to move away from the positioning groove on the locking block. Then, the handle is pulled, and the handle moves the collection frame through the hollow base. The device adopts a snap-fit ​​installation method, which facilitates the cleaning of dust in the collection frame and improves the ease of use of the device. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2This is a front sectional view of the overall structure of this utility model;

[0019] Figure 3 This is an exploded view of the snap-fit ​​mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the card block structure of this utility model;

[0021] In the diagram: 1. Housing; 2. Motor; 3. Transmission rod; 4. Cam; 5. Support plate; 6. Limiting rod; 7. First spring; 8. Second filter screen; 9. First filter screen; 10. Collection frame; 11. Snap-fit ​​mechanism; 1101. Hollow base; 1102. Support rod; 1103. Moving plate; 1104. Inclined surface; 1105. U-shaped inclined plate; 1106. U-shaped frame; 1107. Second spring; 1108. Pad; 1109. Handle; 1110. Positioning rod; 1111. Sealing gasket; 12. Snap-fit ​​block; 13. Intake pipe; 14. Exhaust pipe; 15. Positioning groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Example 1, by Figure 1 - Figure 4 The present invention includes a housing 1, a motor 2 fixedly connected to one side of the housing 1, the output end of the motor 2 extending into the interior of the housing 1 and fixedly connected to a transmission rod 3, one end of the transmission rod 3 being rotatably connected to the housing 1, a cam 4 fixedly sleeved on the outside of the transmission rod 3, support plates 5 symmetrically connected to both sides inside the housing 1, a limiting rod 6 fixedly connected to one side of the upper and lower support plates 5 on the same side, a first filter screen 9 sleeved on the lower side of the limiting rod 6, a second filter screen 8 sleeved on the upper side of the limiting rod 6, a first spring 7 fixedly connected to one corner of one side of the first filter screen 9 and the second filter screen 8, one side of the first spring 7 being fixedly connected to one side of the support plate 5, the first spring 7 being sleeved on the outside of the limiting rod 6, a collection frame 10 provided inside the housing 1, and a snap-fit ​​mechanism 11 provided through the housing 1 on one side of the collection frame 10.

[0024] The snap-fit ​​mechanism 11 includes a hollow base 1101 fixedly installed on one side of the collection frame 10. Support rods 1102 are fixedly installed on both sides inside the hollow base 1101. Movable plates 1103 are movably fitted on both sides outside the support rods 1102. Positioning rods 1110 are fixedly installed on the opposite sides of the two movable plates 1103. The positioning rods 1110 on the upper and lower sides extend through to the outside of the hollow base 1101. A pad 1108 is fixedly installed on one side of the movable plate 1103. An inclined surface 1104 is opened on one side of the pad 1108. A handle 1109 is fixedly installed on one side of the hollow base 1101. A U-shaped frame 1106 is movably fitted on the outside of the handle 1109. One side of the U-shaped frame 1106 extends into the interior of the hollow base 1101 and is fixedly connected to a U-shaped inclined plate 1105 that matches the inclined surface 1104.

[0025] One side of the U-shaped frame 1106 extends into the interior of the hollow base 1101 and is fixedly connected to a U-shaped inclined plate 1105 that is adapted to the inclined surface 1104. When the operator manipulates the U-shaped frame 1106, the U-shaped inclined plate 1105 will move along the inclined surface 1104 of the pad 1108, thereby pushing the moving plate 1103 to slide along the support rod 1102.

[0026] A sealing gasket 1111 is fixedly installed on one side of the hollow base 1101. A second spring 1107 is movably sleeved on the outer side of the support rods 1102 on both sides. The two sides of the second spring 1107 are fixedly connected to the movable plates 1103 on both sides respectively. The top and bottom of the hollow base 1101 are provided with a locking block 12. One side of the locking block 12 is fixedly connected to the housing 1. A positioning groove 15 adapted to the positioning rod 1110 is opened on one side of the locking block 12. An air inlet pipe 13 is fixedly connected to one side of the housing 1. A flange is provided on the outer side of the air inlet pipe 13. An exhaust pipe 14 is fixedly connected to the side of the housing 1 away from the air inlet pipe 13.

[0027] When the movable plate 1103 is displaced by an external force, the second spring 1107 will be compressed accordingly, and then quickly push the movable plate 1103 back to its original position after the force disappears.

[0028] Working principle: During use, the air inlet pipe 13 is fixed to the external pneumatic conveying system via a flange. When dust enters the housing 1 from the air inlet pipe 13, large dust particles are filtered out by the first filter screen 9, and fine dust particles are filtered out by the second filter screen 8. The rotation of the motor 2 drives the transmission rod 3 to rotate, which in turn drives the cam 4 to rotate. The rotation of the cam 4 causes the first filter screen 8 and the second filter screen 9 to move away from each other, while simultaneously compressing the first spring 7. The elastic force of the first spring 7 can be used to reset the first filter screen 8 and the second filter screen 9, thus enabling timely cleaning of the first filter screen 8 and the second filter screen 9. Dust adhering to the surface of filter screen 9 is moved to one side by pressing U-shaped frame 1106. U-shaped frame 1106 drives U-shaped inclined plate 1105 to move to one side. U-shaped inclined plate 1105 drives pad 1108 to move closer to each other through the matching inclined surface 1104. Pad 1108 drives moving plate 1103 to move closer to each other. At the same time, the second spring 1107 is compressed, so that positioning rod 1110 moves away from positioning groove 15 on card block 12. Then, the handle 1109 is pulled. The handle 1109 drives collection frame 10 to move through hollow base 1101 to clean the dust in collection frame 10.

Claims

1. A multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials, comprising a housing (1), characterized in that: A motor (2) is fixedly connected to one side of the housing (1). The output end of the motor (2) extends into the interior of the housing (1) and is fixedly connected to a transmission rod (3). One end of the transmission rod (3) is rotatably connected to the housing (1). A cam (4) is fixedly sleeved on the outside of the transmission rod (3). Support plates (5) are symmetrically connected to both sides inside the housing (1). Limiting rods (6) are fixedly connected to the corresponding sides of the upper and lower support plates (5) on the same side. A first filter screen (9) is sleeved on the lower side outside the limiting rod (6). A second filter screen (8) is sleeved on the upper side outside the limiting rod (6). A first spring (7) is fixedly connected to the four corners of one side of the first filter screen (9) and the second filter screen (8). One side of the first spring (7) is fixedly connected to one side of the support plate (5). The first spring (7) is sleeved on the outside of the limiting rod (6). A collection frame (10) is provided inside the housing (1). A snap-fit ​​mechanism (11) is provided through the housing (1) on one side of the collection frame (10).

2. The multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials according to claim 1, characterized in that: The snap-fit ​​mechanism (11) includes a hollow base (1101) fixedly installed on one side of the collection frame (10). Support rods (1102) are fixedly installed on both sides inside the hollow base (1101). Movable plates (1103) are movably sleeved on both sides outside the support rods (1102). Positioning rods (1110) are fixedly installed on the side of the two movable plates (1103) that are far apart. The positioning rods (1110) on the upper and lower sides extend through to the outside of the hollow base (1101).

3. The multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials according to claim 2, characterized in that: A pad (1108) is fixedly installed on one side of the movable plate (1103), and a slope (1104) is provided on one side of the pad (1108). A handle (1109) is fixedly installed on one side of the hollow base (1101), and a U-shaped frame (1106) is movably sleeved on the outside of the handle (1109). One side of the U-shaped frame (1106) extends into the interior of the hollow base (1101) and is fixedly connected to a U-shaped inclined plate (1105) that is compatible with the slope (1104).

4. The multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials according to claim 2, characterized in that: A sealing gasket (1111) is fixedly installed on one side of the hollow base (1101), and a second spring (1107) is movably sleeved on the outer side of the support rods (1102) on both sides. The two sides of the second spring (1107) are respectively fixedly connected to the movable plates (1103) on both sides.

5. The multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials according to claim 2, characterized in that: The hollow base (1101) is provided with a locking block (12) at both the top and bottom. One side of the locking block (12) is fixedly connected to the shell (1). A positioning groove (15) adapted to the positioning rod (1110) is provided on one side of the locking block (12).

6. The multi-stage self-cleaning filtration device for a pneumatic conveying system for bulk materials according to claim 1, characterized in that: An air inlet pipe (13) is fixedly connected to one side of the housing (1), and a flange is provided on the outside of the air inlet pipe (13). An exhaust pipe (14) is fixedly connected to the side of the housing (1) away from the air inlet pipe (13).

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