Filter for metering pump pipeline

Abstract

The utility model relates to the technical field of metering pumps, and particularly discloses a filter for a metering pump pipeline, which comprises a shell with a mounting cavity and a filter component detachably mounted on the mounting cavity, a liquid inlet communicated with the filtering assembly and a liquid outlet communicated with the mounting cavity are formed in the shell. When the pipeline filter is cleaned, the pipeline filter can be cleaned only by dismounting the filter assembly, the pipeline filter is simple and convenient to mount and dismount, and compared with the prior art, the fault processing time is shortened, the cleaning strength of the pipeline filter is obviously reduced, and the risk that a static sealing point of a flange is possibly leaked when the filter is dismounted and cleaned each time is reduced; the operation stability of the metering pump is greatly and obviously improved, the purposes of accurate metering and continuous and stable operation are achieved, the equipment operation and maintenance cost and manpower resources are greatly reduced, and quality improvement and efficiency improvement of factories are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of metering pump technology, and more specifically, to a filter for metering pump pipelines. Background Technology

[0002] A metering pump is a type of pump whose key feature is its ability to maintain a constant flow rate regardless of temperature. Metering pumps can simultaneously perform the functions of delivery, metering, and regulation, thus simplifying production processes. Using multiple metering pumps allows for the precise mixing of several media in the process flow. Due to their outstanding performance, metering pumps are now widely used in various industrial sectors, including pharmaceuticals and food processing.

[0003] A Y-type filter is usually installed on the pipeline before the medium enters the metering pump to filter out impurities and particles in the liquid. This ensures that the particles in the liquid entering the metering pump's inlet valve are smaller than the required mesh size, preventing particles from scratching the metering pump's diaphragm or causing wear on the metering pump's inlet and outlet check valves, which could lead to a decrease in metering pump performance and affect subsequent equipment and processes.

[0004] During the use of Y-type pipeline filters, due to their small flow channels and dense stainless steel wire mesh inside the filter element, impurities easily accumulate on the filter screen and clog the flow channels, resulting in the metering pump not delivering a flow. Furthermore, each manual disassembly and cleaning of the filter requires the removal of multiple flanges, and the effectiveness of the static seal cannot be guaranteed during reassembly after cleaning, leading to reduced filtration efficiency and leaks. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a filter for metering pump pipelines;

[0006] The solution adopted by this utility model to solve the technical problem is:

[0007] A filter for a metering pump pipeline includes a housing having a mounting cavity and a filter assembly detachably mounted in the mounting cavity; the housing has an inlet communicating with the filter assembly and an outlet communicating with the mounting cavity.

[0008] Before entering the metering pump, the liquid medium enters the filter assembly through the inlet to filter out impurities and particulate matter. The filtered liquid medium then enters the mounting chamber and subsequently enters the metering pump through the outlet. The filter assembly ensures that the particles in the liquid medium entering the metering pump's inlet valve are smaller than the required mesh size, preventing scratches on the metering pump's diaphragm or wear on the inlet and outlet check valves, thus avoiding performance degradation and impacts on subsequent equipment and processes. By detachably installing the filter assembly in the mounting chamber, it can be directly removed for cleaning after a period of use. Compared to existing technologies, this eliminates the need to disassemble the entire filter, avoiding reduced sealing performance and leakage caused by filter removal.

[0009] In some possible implementations, to facilitate the installation and removal of the filter assembly, and to enable quick inspection of the filtration status and rapid troubleshooting when the metering pump is not producing, a top cover is also included, which is mounted on the housing and used to seal the mounting cavity. The top cover is provided with an exhaust port communicating with the mounting cavity, and a sealing plug with external threads that is detachably mounted on the exhaust port.

[0010] In some possible implementations, in order to enable the filter assembly to effectively filter liquid media;

[0011] The filter assembly includes a cylindrical filter screen with an internal filter chamber, end caps installed at both ends of the filter screen, and a filter element located inside the filter chamber; a through hole communicating with the liquid inlet is provided on the end cap of the filter assembly near the liquid inlet.

[0012] In some possible implementations, a connecting pipe with one end communicating with the liquid inlet is provided inside the housing; an insertion hole for inserting into the connecting pipe is provided on the end cap of the filter assembly near the liquid inlet; the through hole and the insertion hole are coaxially arranged and located inside the insertion hole.

[0013] In some possible implementations, in order to effectively secure the filter assembly and make it easier to install and remove the filter assembly, an elastic element is installed between the inner sidewalls of the housing of the end cap on the side of the filter assembly near the liquid inlet.

[0014] In some possible implementations, the elastic element is a compression spring.

[0015] In some possible implementations, in order to effectively connect this utility model with pipelines and metering pumps, it also includes an inlet flange and an outlet flange disposed on the outside of the housing;

[0016] The inlet flange is connected to the liquid inlet, and the outlet flange is connected to the liquid outlet.

[0017] In some possible implementations, the inlet flange and the outlet flange have the same structure, including a pipe that is connected at one end to the liquid inlet or liquid outlet, and a flange that is coaxially arranged and connected to the other end of the pipe.

[0018] In some possible implementations, the outer casing is cylindrical, and the top cover is screwed into the outer casing.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention allows for cleaning simply by removing the filter assembly, making installation and disassembly simple and convenient. Compared to existing technologies, it reduces troubleshooting time, significantly lowers the cleaning intensity of pipeline filters, and reduces the risk of leakage at the flange static sealing point caused by each filter disassembly and cleaning. It also greatly improves the operational stability of the metering pump, achieving the goal of accurate metering and continuous stable operation. This significantly reduces equipment operation and maintenance costs and human resources, helping factories improve quality and efficiency.

[0021] This utility model has a simple structure and is highly practical. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram showing the connection relationship between the inlet flange, the outer shell, and the outlet flange in this utility model;

[0024] The components are: 1. Outer shell; 11. Mounting cavity; 12. Connecting pipe; 2. Filter assembly; 3. Sealing plug; 31. Vent hole; 4. Elastic element; 5. Inlet flange; 6. Outlet flange; 61. Through pipe; 62. Flange. Detailed Implementation

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The present invention will now be described in detail.

[0027] like Figures 1-2 As shown:

[0028] A filter for a metering pump pipeline includes a housing 1 having a mounting cavity 11 and a filter assembly 2 detachably mounted in the mounting cavity 11; the housing 1 is provided with an inlet communicating with the filter assembly 2 and an outlet communicating with the mounting cavity 11.

[0029] Before entering the metering pump, the liquid medium enters the filter assembly 2 through the inlet to filter out impurities and particulate matter. The filtered liquid medium then enters the mounting chamber 11 and subsequently enters the metering pump through the outlet. The filter assembly 2 ensures that the particles in the liquid medium entering the metering pump's inlet valve are smaller than the required mesh size, preventing particles from scratching the metering pump's diaphragm or wearing the inlet and outlet check valves, thus avoiding performance degradation and impact on subsequent equipment and processes. By detachably installing the filter assembly 2 in the mounting chamber 11, it can be directly removed for cleaning after a period of use. Compared to existing technologies, this eliminates the need to disassemble the entire filter, avoiding reduced sealing performance and leakage caused by filter disassembly.

[0030] In some possible implementations, a top cover is also included, which is mounted on the housing 1 and is used to close the mounting cavity 11; the top cover is provided with an exhaust hole 31 communicating with the mounting cavity 11, and a sealing plug 3 detachably mounted on the exhaust hole 31 and having external threads, the exhaust hole 31 having internal threads.

[0031] In use, the sealing plug 3 will seal the mounting cavity 11, and the vent hole 31 will release air. After the air is released, the sealing plug 3 will be used to seal the vent hole 31.

[0032] During cleaning, open the top cover, remove the filter assembly 2 from the mounting cavity 11, and clean it. The outer shell 1 will not be removed.

[0033] If the metering pump is not producing, the sealing plug 3 can be opened to check the filtration and quickly troubleshoot the problem.

[0034] In some possible implementations, the filter assembly 2 includes a cylindrical filter screen with an internal filter chamber, end caps installed at both ends of the filter screen, and a filter element located inside the filter chamber; a through hole communicating with the liquid inlet is provided on the end cap of the filter assembly 2 on the side near the liquid inlet.

[0035] The liquid medium enters the filter element through the inlet for filtration. The filtered liquid medium then passes through the filter element and filter screen and enters the mounting cavity 11. Finally, it is discharged into the metering pump through the outlet.

[0036] In some possible implementations, a connecting pipe 12 with one end communicating with the liquid inlet is provided inside the housing 1; an insertion hole for inserting and engaging with the connecting pipe 12 is provided on the end cap of the filter assembly 2 near the liquid inlet; the through hole and the insertion hole are coaxially arranged and located inside the insertion hole.

[0037] The filter assembly 2 is inserted into the outside of the connecting pipe 12 through the insertion hole. The connecting pipe 12 is connected to the through hole, so that the liquid medium can enter the filter assembly 2 through the connecting pipe 12 for filtration.

[0038] In some possible implementations, an elastic element 4 is installed between the inner sidewalls of the housing 1 of the end cap on the side of the filter assembly 2 near the liquid inlet.

[0039] When installing the filter assembly 2, insert the socket into the connecting pipe 12, and then install the elastic element 4 between the side of the filter assembly 2 away from the connecting pipe 12 and the inner side of the outer shell 1. The elastic element 4 is in a compressed state, applying an elastic force to the filter assembly 2, and cooperating with the connecting pipe 12 to fix the filter assembly 2.

[0040] When removing the filter assembly 2, apply a force to the elastic element 4 to compress it further, and then remove the filter assembly 2 from the connecting pipe 12.

[0041] Furthermore, a sealing gasket is provided inside the socket to prevent liquid medium from leaking between the connecting pipe 12 and the socket.

[0042] In some possible implementations, the elastic element 4 is a compression spring.

[0043] The compression spring facilitates the installation of filter assembly 2. In addition, when removing filter assembly 2, you only need to press the compression spring gently to remove the filter screen filter assembly 2. At the same time, the compression spring can also play a certain role in cushioning.

[0044] In some possible implementations, an inlet flange 5 and an outlet flange 6 are also provided on the outside of the housing 1;

[0045] The inlet flange 5 is connected to the liquid inlet, and the outlet flange 6 is connected to the liquid outlet.

[0046] In some possible implementations, the inlet flange 5 and the outlet flange 6 have the same structure, including a pipe 61 with one end connected to the liquid inlet or liquid outlet, and a flange 62 coaxially connected to and connected to the other end of the pipe 61.

[0047] In some possible implementations, the outer casing 1 is cylindrical, and the top cover is screwed onto the outer casing 1; the axis of the outer casing 1 is perpendicular to the axis of the through pipe 61.

[0048] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A filter for metering pump pipelines, characterized in that, It includes a housing with a mounting cavity and a filter assembly that can be detachably installed in the mounting cavity; the housing is provided with an inlet communicating with the filter assembly and an outlet communicating with the mounting cavity; The filter assembly includes a cylindrical filter screen with an internal filter chamber, end caps installed at both ends of the filter screen, and a filter element located inside the filter chamber; a through hole communicating with the liquid inlet is provided on the end cap of the filter assembly near the liquid inlet. A connecting pipe with one end communicating with the liquid inlet is provided inside the housing; an insertion hole for inserting and engaging the connecting pipe is provided on the end cap of the filter assembly near the liquid inlet; the through hole and the insertion hole are coaxially arranged and located inside the insertion hole.

2. A filter for a metering pump pipeline according to claim 1, characterized in that, It also includes a top cover mounted on the housing for sealing the mounting cavity; the top cover is provided with an exhaust port communicating with the mounting cavity, and a sealing plug removably mounted on the exhaust port.

3. A filter for a metering pump pipeline according to claim 2, characterized in that, An elastic element is installed between the inner sidewalls of the housing of the end cap on the side near the inlet of the filter assembly.

4. A filter for a metering pump pipeline according to claim 3, characterized in that, The elastic element is a compression spring.

5. A filter for a metering pump pipeline according to any one of claims 1-4, characterized in that, It also includes an inlet flange and an outlet flange located on the outside of the housing; The inlet flange is connected to the liquid inlet, and the outlet flange is connected to the liquid outlet.

6. A filter for a metering pump pipeline according to claim 5, characterized in that, The inlet flange and outlet flange have the same structure, including a pipe that is connected to the liquid inlet or liquid outlet at one end, and a flange that is coaxially arranged and connected to the other end of the pipe.

7. A filter for a metering pump pipeline according to claim 1, characterized in that, The outer shell is cylindrical.

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