A durable fine device filter

Abstract

This utility model discloses a durable fine filter device, relating to the field of filter technology. It includes a main housing, side covers, several layers of built-in filter screens, a perforated tube, an observation tube, a flow tube, a control valve, and an output tube. The side covers are threaded to both sides of the main housing. Two frame plates are provided, and three layers of built-in filter screens are arranged between the frame plates: a first filter screen, a second filter screen, and a third filter screen. The pore size of the first, second, and third filter screens decreases sequentially. The third filter screen is located above the perforated tube, which has several holes penetrating its outer surface towards the third filter screen. One side of the perforated tube extends outside the filter, and the observation tube is threaded to the perforated tube. The bottom end of the perforated tube communicates with the flow tube, and a fourth filter screen is located at the end of the flow tube. The filter has a compact structure, the filter screens can be flexibly replaced, and the state of the filtered liquid can be observed in time through the observation tube, facilitating timely adjustments during use. It has a long service life and is more durable.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and more specifically to durable fine device filters. Background Technology

[0002] Traditional filters typically have a cylindrical structure, where the liquid to be filtered enters from the outside of the filter screen and exits through an outlet pipe inside the screen. However, this structure has poor filtration efficiency and a short service life. Based on this, the inventors developed and proposed this solution. Utility Model Content

[0003] The purpose of this utility model is to provide a durable fine device filter in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A durable fine filter includes a main housing, side covers, several layers of built-in filter screens, a perforated tube, an observation tube, a flow tube, a control valve, and an output tube. The side covers are threaded to both sides of the main housing. A frame plate is installed inside the main housing, with one end of the frame plate creating a gap between it and the interior of the main housing. Two frame plates are provided, and three layers of built-in filter screens are installed between the frame plates: a first filter screen, a second filter screen, and a third filter screen. The pore size of the first, second, and third filter screens decreases sequentially. The third filter screen is located above the perforated tube, which has several holes penetrating its outer surface towards the third filter screen. One side of the perforated tube extends outside the filter, and the observation tube is threaded to the perforated tube. The bottom end of the perforated tube communicates with the flow tube, and a fourth filter screen is installed at the end of the flow tube. A control valve is installed on the flow tube. The output tube is installed on the side end of the main housing, and the liquid substance output from the flow tube flows out through the output tube after being filtered by the fourth filter screen.

[0006] A preferred technical solution: An input pipe is installed through one side of the gap between the frame plate and the interior of the main casing.

[0007] A preferred technical solution: The filter screen and the frame are nested and connected.

[0008] A preferred technical solution: The control valve includes an assembly, a mounting base, a pressure plate, a spring, and a handle. The mounting base is mounted on the main housing. The assembly extends into the main housing and passes through the flow tube. The assembly compresses the spring through the pressure plate. The end of the assembly near the mounting base is connected to the handle.

[0009] A preferred technical solution: The assembly includes a rod and a baffle plate. The baffle plate passes through the flow tube to block the liquid flowing inside the flow tube, and a pressure plate is provided on the rod.

[0010] A preferred technical solution: The size of the assembly is larger than the maximum cross-sectional size of the flow pipe.

[0011] A preferred technical solution: the pore size of the fourth filter screen is smaller than that of the third filter screen.

[0012] The beneficial effects of this utility model are as follows:

[0013] The filter in this invention has a compact structure, the filter screen can be flexibly replaced, the state of the filtered liquid can be observed in time through the observation tube, which facilitates timely adjustment during use, and it has a long service life and is more durable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0016] Figure 3 This is a structural schematic diagram of the assembly.

[0017] Reference numerals: 1. Main casing; 11. Frame plate; 12. First filter screen; 13. Second filter screen; 14. Third filter screen; 15. Fourth filter screen; 2. Side cover; 3. Perforated tube; 31. Hole; 4. Observation tube; 5. Flow tube; 6. Control valve; 60. Block; 61. Mounting base; 62. Pressure plate; 63. Spring; 64. Handle; 65. Rod body; 66. Baffle; 7. Output tube; 8. Input tube. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 3As shown, this embodiment provides a durable fine filter, including a main housing 1, side covers 2, several layers of built-in filter screens, a perforated tube 3, an observation tube 4, a flow tube 5, a control valve 6, and an output tube 7. The side covers 2 are threaded to both sides of the main housing 1. A frame plate 11 is provided inside the main housing 1, with one end of the frame plate 11 forming a gap with the interior of the main housing 1. Two frame plates 11 are provided, and three layers of built-in filter screens are arranged between the frame plates 11: a first filter screen 12, a second filter screen 13, and a third filter screen 14. The pore sizes of the first filter screen 12, second filter screen 13, and third filter screen 14 decrease sequentially. The third filter screen 14 is located above the perforated tube 3. Several holes 31 are provided through the perforated tube 3 near the outer surface of the third filter screen 14. One side of the perforated tube 3 extends outside the filter, and the observation tube 4 is threaded to the perforated tube 3. The bottom end of the perforated tube 3 communicates with the flow tube 5, and a fourth filter screen 15 is provided at the end of the flow tube 5. A control valve 6 is installed on the flow pipe 5, and an output pipe 7 is installed on the side of the main housing 1. The liquid substance output from the flow pipe 5 is filtered by the fourth filter screen 15 and then flows out from the output pipe 7. To ensure that the control valve 6 remains open for a long time, a block of a certain thickness can be provided between the handle 64 and the outer surface of the main housing 1, so that the pressure plate 62 continuously compresses the spring 63, and the baffle 66 does not obstruct the flow path of the flow pipe 5. The frame plate 11 and the side cover 2 are in a close fit. Specifically, the frame plate 11 is slidably installed inside the main housing 1. For example, a protrusion is provided at the bottom of the frame plate 11, and a corresponding connecting groove is provided at the corresponding position to match the protrusion. A blocking block 60 is provided on the rod 65 so that the rod 65 can maintain a vertical relative state.

[0021] Furthermore, an input pipe 8 is installed through one side of the gap between the frame plate 11 and the interior of the main outer shell 1.

[0022] Furthermore, the filter screen is nested and connected to the frame plate 11.

[0023] Furthermore, the control valve 6 includes an assembly, a mounting base 61, a pressure plate 62, a spring 63, and a handle 64. The mounting base 61 is mounted on the main housing 1. The assembly extends into the main housing 1 and passes through the flow tube 5. The assembly compresses the spring 63 through the pressure plate 62. The end of the assembly near the mounting base 61 is connected to the handle 64.

[0024] Furthermore, the assembly includes a rod 65 and a baffle 66, the baffle 66 passing through the flow tube 5 to block the liquid flowing inside the flow tube 5, and a pressure plate 62 is provided on the rod 65.

[0025] Furthermore, the dimensions of the assembly are larger than the maximum cross-sectional dimension of the flow pipe 5.

[0026] Furthermore, the pore size of the fourth filter screen 15 is smaller than that of the third filter screen 14.

[0027] The durable fine filter of this utility model features a side cover 2 connected to the main housing 1 by a threaded connection, exposing the internal filter screen structure for easy replacement. The filter has a compact overall structure. The space above the first filter screen 12 provides sufficient flow space for the liquid entering the filter. The liquid sequentially passes through the first filter screen 12, the second filter screen 13, and the third filter screen 14 for multiple filtrations, first entering the perforated tube 3. The liquid in the perforated tube 3 then flows to the observation tube 4, allowing for observation of the filtered liquid's state, such as color and the presence of any floating impurities. Furthermore, the observation tube 4 can be not only a hollow transparent tube but also a transparent tube with a built-in magnet, making it particularly suitable for end-of-pipe filtration in metal pipelines. Opening the control valve 6 allows liquid to exit through the flow pipe 5, pass through the fourth filter screen 15, and exit through the output pipe 7.

[0028] It should be noted that: after being filtered by the third filter screen 14, the liquid enters the perforated tube 3 through the hole 31, and then flows into the flow tube 5 through the connection between the perforated tube 3 and the flow tube 5, undergoes the final fourth filter screen 15, and then flows out from the output tube 7.

Claims

1. A durable fine-device filter, characterized in that, The device includes a main outer shell, side covers, several layers of built-in filters, a perforated tube, an observation tube, a flow tube, a control valve, and an output tube. The side covers are threaded to both sides of the main outer shell. A frame plate is installed inside the main outer shell, with one end of the frame plate creating a gap between it and the interior of the main outer shell. Two frame plates are provided, and three layers of built-in filters are installed between the frame plates: a first filter, a second filter, and a third filter. The pore size of the first, second, and third filters decreases sequentially. The third filter is located above the perforated tube. The perforated tube has several holes penetrating its outer surface towards the third filter. One side of the perforated tube extends outside the filter, and the observation tube is threaded to the perforated tube. The bottom end of the perforated tube communicates with the flow tube, and a fourth filter is installed at the end of the flow tube. A control valve is installed on the flow tube. The output tube is installed on the side end of the main outer shell, and the liquid substance output from the flow tube flows out through the output tube after being filtered by the fourth filter.

2. The durable fine filter according to claim 1, characterized in that, An input pipe is installed through one side of the gap between the frame plate and the interior of the main shell.

3. The durable fine filter according to claim 1, characterized in that, The filter screen is nested and connected to the frame plate.

4. The durable fine filter according to claim 1, characterized in that, The control valve includes an assembly, a mounting base, a pressure plate, a spring, and a handle. The mounting base is mounted on the main housing. The assembly extends into the main housing and passes through a flow tube. The assembly compresses the spring through the pressure plate. The end of the assembly near the mounting base is connected to the handle.

5. The durable fine device filter according to claim 4, characterized in that, The assembly includes a rod and a baffle plate. The baffle plate passes through the flow tube to block the liquid flowing inside the flow tube, and a pressure plate is provided on the rod.

6. The durable fine device filter according to claim 4, characterized in that, The dimensions of the assembly are larger than the maximum cross-sectional dimensions of the flow tube.

7. The durable fine filter according to claim 1, characterized in that, The pore size of the fourth filter screen is smaller than that of the third filter screen.

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