Multi-stage filtering device

Abstract

The utility model relates to the technical field of filtering devices, and discloses a multi-stage filtering device, which comprises a shell, a filter screen, a first filter screen, a second filter screen, a first filter screen and a second filter screen, the shell is provided with a cavity, and the cavity is internally provided with a circular-truncated-cone-shaped filter screen; the cleaning assembly comprises a connecting rod, a guide body and a contact block, the connecting rod is fixedly connected with the rotating shaft, the guide body is fixedly connected with the connecting rod, the contact block is elastically connected with the guide body, the contact block can clean the circumferential surface of the filter sieve, and the contact block abuts against the circumferential surface of the filter sieve, so that the filter surface of the filter sieve is cleaned; the contact block can drive the impurities to a concentrated position, the filtered impurities can be conveniently cleaned in the later period, the contact block is pushed by the spring to move downwards in the sliding channel, the contact block can make full contact with the circumferential face of the filter sieve, the cleaning effect is guaranteed, and the situation that the impurities block filter holes of the filter sieve and affect the filter efficiency is reduced; the rotating shaft and the contact block move, so that the sealing problem of the filter sieve and the shell does not need to be considered.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a multi-stage filtration device. Background Technology

[0002] Metsulfuron-methyl is a triazoline herbicide that is highly effective and low in toxicity, with broad-spectrum herbicidal activity.

[0003] The prior art discloses a multi-stage filtration device for the production of metolachlor (publication number: CN221752576U), which includes a filter box, a sealing cover installed at the top of the filter box, a motor installed at the top of the sealing cover, a rotating shaft installed at the bottom of the motor, and a first filter screen and a second filter screen respectively installed on the outside of the rotating shaft. Mounting plates are installed on both sides of the outside of the sealing cover.

[0004] Existing technologies mainly use a motor to drive the filter screen to rotate, which is then cleaned by a stationary scraper. Since the filter screen rotates relative to the filter box, the sealing issue needs to be considered. Otherwise, the material will fall directly through the gap between the filter screen and the filter box without being filtered, affecting the filtration effect. This cleaning method has poor lifespan and durability, and there is room for optimization.

[0005] Therefore, we propose a multi-stage filtration device. Utility Model Content

[0006] The present invention aims to solve the technical problems existing in the prior art and provide a multi-stage filtration device.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a multi-stage filtration device, comprising:

[0008] The outer shell has a cavity, and a frustum-shaped filter screen is installed inside the cavity. A rotating shaft is rotatably connected inside the cavity of the outer shell.

[0009] A cleaning component, disposed within the cavity of the housing, is used to clean the filter screen. The cleaning component includes a connecting rod, a guide body, and a contact block. The connecting rod is fixedly connected to the rotating shaft, the guide body is fixedly connected to the connecting rod, and the contact block is elastically connected to the guide body. The contact block is capable of cleaning the circumferential surface of the filter screen.

[0010] In a preferred embodiment of this utility model, a bushing is fixedly installed at the end of the filter screen, and the rotating shaft passes through the bushing and is rotatably connected to the inner bottom surface of the outer casing.

[0011] In a preferred embodiment of this utility model, the connecting rod is formed into an L-shaped rod body, and a ring is fixedly installed at the end of the connecting rod, with the ring being fixedly connected to the rotating shaft.

[0012] In a preferred embodiment of this utility model, the guide body is formed into a triangular plate, and the bottom surface of the guide body is provided with a sliding channel for the contact block to slide, and the contact block is elastically disposed in the sliding channel.

[0013] In a preferred embodiment of this utility model, a spring is fixedly installed on the top surface of the contact block, the spring is fixedly connected to the top surface of the guide body, the contact block is slidably connected to the sliding channel, and the lower end surface of the contact block can abut against the circumferential surface of the filter screen.

[0014] In a preferred embodiment of this utility model, a motor is fixedly mounted on the top surface of the housing, and the end of the rotating shaft is fixedly connected to the output shaft of the motor.

[0015] In a preferred embodiment of this utility model, a hopper for feeding is fixedly installed on the top surface of the outer shell, and a pipe for draining liquid is fixedly installed on the bottom surface of the outer shell.

[0016] In a preferred embodiment of this utility model, a slag discharge groove is provided on the side wall of the outer shell, and a material guide pipe is fixedly installed on the outer wall of the outer shell. The material guide pipe has a groove on the side near the outer shell, and the groove is directly opposite the slag discharge groove.

[0017] This invention provides a multi-stage filtration device. It has the following beneficial effects:

[0018] 1. This multi-stage filtration device uses a motor-driven rotating shaft to synchronously move multiple connecting rods. It should be noted that the upper and lower connecting rods are symmetrically distributed to ensure the balance of the rotating shaft. Contact blocks abut against the circumferential surface of the filter screen, cleaning the filter surface. Simultaneously, the contact blocks drive impurities to a concentrated position, facilitating subsequent cleaning of the filtered impurities. Springs push the contact blocks downwards within a sliding channel, ensuring full contact between the contact blocks and the circumferential surface of the filter screen, guaranteeing cleaning effectiveness and reducing the impact of impurities clogging the filter screen's pores on filtration efficiency. Since the filter screen remains stationary while the rotating shaft and contact blocks move, there is no need to consider the sealing issue between the filter screen and the outer casing.

[0019] 2. This multi-stage filtration device feeds material through a hopper. Methionine falls onto the upper filter screen for primary filtration, and the filtrate continues to fall onto another filter screen below for further filtration. The filter material on the filter screen is pushed by a contact block, and the filter material is discharged from the slag discharge trough and guided by a guide pipe to fall onto one side of the outer shell, achieving solid-liquid separation. This not only has a cleaning effect but also promotes the discharge of the filter material from the outer shell, thus improving the separation efficiency. Attached Figure Description

[0020] Figure 1 This is a perspective view of the entire utility model;

[0021] Figure 2This is a partial sectional view of the outer shell of this utility model;

[0022] Figure 3 This is a perspective view of the cleaning component and filter screen of this utility model;

[0023] Figure 4 This is an exploded view of the cleaning component of this utility model.

[0024] Legend: 10. Outer shell; 11. Hopper; 12. Rotating shaft; 13. Filter screen; 14. Slag discharge trough; 15. Guide pipe; 20. Connecting rod; 21. Guide body; 22. Contact block; 23. Sliding channel. Detailed Implementation

[0025] A multi-stage filtration device, such as Figure 1 and Figure 2 As shown, it includes:

[0026] The housing 10 has a cavity, and a frustum-shaped filter screen 13 is provided inside the cavity. A rotating shaft 12 is rotatably connected inside the cavity of the housing 10. A bushing is fixedly installed at the end of the filter screen 13. The rotating shaft 12 passes through the bushing and is rotatably connected to the inner bottom surface of the housing 10. A motor is fixedly installed on the top surface of the housing 10. The end of the rotating shaft 12 is fixedly connected to the output shaft of the motor. By electrically connecting the motor to a control switch, the motor is turned on and off by the switch. The motor drives the rotating shaft 12 to rotate. The housing 10 is provided with at least two filter screens 13 with different mesh sizes. Multi-stage filtration of metsulfuron-methyl is performed through the filter screens 13.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, the cleaning assembly is disposed inside the cavity of the housing 10 for cleaning the filter screen 13. The cleaning assembly includes a connecting rod 20, a guide body 21, and a contact block 22. The connecting rod 20 is fixedly connected to the rotating shaft 12, the guide body 21 is fixedly connected to the connecting rod 20, and the contact block 22 is elastically connected to the guide body 21. The contact block 22 can clean the circumferential surface of the filter screen 13. The connecting rod 20 forms an L-shaped rod body, and a ring is fixedly installed at the end of the connecting rod 20. The ring is fixedly connected to the rotating shaft 12. The guide body 21 forms a triangular plate. A sliding channel 23 for sliding the contact block 22 is opened on the bottom surface of the guide body 21. The contact block 22 is elastically disposed in the sliding channel 23. A spring is fixedly installed on the top surface of the contact block 22. The spring is fixedly connected to the inner top surface of the guide body 21. The contact block 22 is slidably connected to the sliding channel 23. The lower end surface of the contact block 22 can abut against the circumferential surface of the filter screen 13.

[0028] The motor drives the rotating shaft 12 to move multiple connecting rods 20 synchronously. It should be noted that the upper and lower connecting rods 20 are symmetrically distributed to ensure the balance of the rotating shaft 12 during rotation. The contact block 22 abuts against the circumferential surface of the filter screen 13 to clean the filter surface of the filter screen 13. At the same time, the contact block 22 can drive impurities to a concentrated position, which is convenient for cleaning the filtered impurities later. The spring pushes the contact block 22 to move down in the sliding channel 23, so that the contact block 22 can fully contact the circumferential surface of the filter screen 13, ensuring the cleaning effect and reducing the impact of impurities clogging the filter holes of the filter screen 13 on the filtration efficiency.

[0029] like Figure 1 and Figure 2 As shown, a hopper 11 for feeding is fixedly installed on the top surface of the outer shell 10, and a pipe for draining liquid is fixedly installed on the bottom surface of the outer shell 10. A slag discharge trough 14 is opened on the side wall of the outer shell 10, and a guide pipe 15 is fixedly installed on the outer wall of the outer shell 10. The guide pipe 15 has a slot on the side near the outer shell 10, and the slot is directly opposite the slag discharge trough 14. When feeding through the hopper 11, the mesotrione falls onto the upper filter screen 13 for primary filtration. The filtrate continues to fall onto another filter screen 13 below for further filtration. The filter material on the filter screen 13 is pushed by the contact block 22. The filter material is discharged from the slag discharge trough 14 and guided by the guide pipe 15 to fall onto one side of the outer shell 10, realizing solid-liquid separation. This has both a cleaning effect and can promote the discharge of the filter material from the outer shell 10, thereby improving the separation efficiency.

[0030] The working principle of this utility model is as follows: By electrically connecting the motor to the control switch, the motor is turned on and off by the switch. The motor drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives multiple connecting rods 20 to move synchronously. The upper and lower connecting rods 20 are symmetrically distributed to ensure the balance of the rotating shaft 12 during rotation. The contact block 22 abuts against the circumferential surface of the filter screen 13 to clean the filter surface of the filter screen 13. At the same time, the contact block 22 can drive impurities to a concentrated position. The spring pushes the contact block 22 to move down in the sliding channel 23, so that the contact block 22 can fully contact the circumferential surface of the filter screen 13. The contact block 22 pushes the filter material on the filter screen 13. The filter material is discharged from the slag discharge trough 14 and guided by the guide pipe 15 to fall on one side of the outer shell 10 to achieve solid-liquid separation. Methionine falls on the upper filter screen 13 for one filtration, and the filtrate continues to fall to the lower filter screen 13 for further filtration, realizing multi-stage filtration.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration device, characterized in that, include: The outer shell (10) has a cavity, and a frustum-shaped filter screen (13) is provided inside the cavity of the outer shell (10). A rotating shaft (12) is rotatably connected inside the cavity of the outer shell (10). A cleaning component is disposed in the cavity of the housing (10) for cleaning the filter screen (13). The cleaning component includes a connecting rod (20), a guide body (21), and a contact block (22). The connecting rod (20) is fixedly connected to the rotating shaft (12), the guide body (21) is fixedly connected to the connecting rod (20), and the contact block (22) is elastically connected to the guide body (21). The contact block (22) can clean the circumferential surface of the filter screen (13).

2. The multi-stage filtration device according to claim 1, characterized in that: A bushing is fixedly installed at the end of the filter screen (13), and the rotating shaft (12) passes through the bushing and is rotatably connected to the inner bottom surface of the outer shell (10).

3. The multi-stage filtration device according to claim 1, characterized in that: The connecting rod (20) forms an L-shaped rod body, and a ring is fixedly installed at the end of the connecting rod (20), and the ring is fixedly connected to the rotating shaft (12).

4. The multi-stage filtration device according to claim 1, characterized in that: The guide body (21) forms a triangular plate, and the bottom surface of the guide body (21) is provided with a sliding channel (23) for the sliding of the contact block (22), and the contact block (22) is elastically disposed in the sliding channel (23).

5. The multi-stage filtration device according to claim 4, characterized in that: A spring is fixedly installed on the top surface of the contact block (22), and the spring is fixedly connected to the inner top surface of the guide body (21). The contact block (22) is slidably connected to the sliding channel (23), and the lower end surface of the contact block (22) can abut against the circumferential surface of the filter screen (13).

6. The multi-stage filtration device according to claim 1, characterized in that: A motor is fixedly installed on the top surface of the outer casing (10), and the end of the rotating shaft (12) is fixedly connected to the output shaft of the motor.

7. The multi-stage filtration device according to claim 1, characterized in that: The top surface of the outer shell (10) is fixedly equipped with a hopper (11) for feeding materials, and the bottom surface of the outer shell (10) is fixedly equipped with a pipe for draining liquid.

8. The multi-stage filtration device according to claim 1, characterized in that: The outer shell (10) has a slag discharge trough (14) on its side wall and a guide pipe (15) is fixedly installed on the outer wall of the outer shell (10). The guide pipe (15) has a slot on the side near the outer shell (10) and the slot is directly opposite the slag discharge trough (14).

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