Push-in-line filter

Abstract

The utility model relates to a kind of press type online filter, including shell, pressure column, sieve plate, lower seat, pressing piece and gasket, the gasket, the pressure column and the sieve plate are respectively arranged in the shell, the pressing piece and the lower seat are set in the both ends of the shell, the sieve plate is between the lower seat and the pressure column, the gasket is between the pressing piece and the pressure column, the sieve plate, the gasket, the pressure column, the sieve plate and the lower base form the wire hole of through in the inside. The press type online filter, normal sieve plate is not stressed, and only has contact with pressure column, when using, press pressing piece, gasket buffering makes gasket be pressed and force to pressure column, so that sieve plate is stressed, sealing wire pipe is welded in pressure column hole, so that filter can be connected equipment or part, and welding can withstand high pressure, this product makes assembly use more convenient, need not tool, more convenient use.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to an online filter. Background Technology

[0002] A liquid chromatograph is an instrument that separates and identifies mixtures by utilizing the difference in the partition ratio between two immiscible liquids. When testing samples, the mobile phase must be filtered through an online filter before entering the chromatographic column to prevent impurities in the mobile phase from entering the column and contaminating it, thus affecting the test results.

[0003] Existing online filters, such as Figure 1 As shown, a screen plate c is installed between the pressure column a and the lower seat b. During installation, the threads are tightened with a wrench to create a steel seal by applying pressure from both above and below the screen plate c, thus providing high pressure resistance. However, this structure can be difficult to tighten, requiring significant force to achieve a seal, and the entire tightening process necessitates the use of specialized tightening equipment. The installation process is cumbersome and inconvenient. Utility Model Content

[0004] Therefore, it is necessary to provide an online filter that is easy to operate and simple to install, addressing the problems of cumbersome and inconvenient installation and operation of online filters.

[0005] A press-type online filter includes a housing, a pressure column, a sieve plate, a lower seat, a pressing element, and a gasket. The gasket, the pressure column, and the sieve plate are respectively disposed inside the housing. The pressing element and the lower seat are disposed at both ends of the housing. The sieve plate is located between the lower seat and the pressure column. The gasket is located between the pressing element and the pressure column. Through-holes are formed inside the gasket, the pressure column, the sieve plate, and the lower seat.

[0006] In one embodiment, the pressing element is an eccentric wheel lever or a convex lever, the housing is provided with a pin, the eccentric wheel lever or the convex lever is rotatably mounted on the pin, and one end of the eccentric wheel lever or the convex lever near the pin abuts against the gasket.

[0007] In one embodiment, the housing is provided with a bracket, and the pin is fixedly mounted on the bracket.

[0008] In one embodiment, the pin has a first thread hole.

[0009] In one embodiment, the gasket is a plastic gasket.

[0010] In one embodiment, the gasket is connected to the pressure column slot.

[0011] In one embodiment, the gasket has a protrusion, the pressure column has a corresponding groove, and the protrusion is disposed within the groove.

[0012] In one embodiment, an installation groove is provided between the lower seat and the pressure column, and the sieve plate is disposed within the installation groove.

[0013] In one embodiment, the lower seat is provided with a first wire hole, the pressure column is provided with a second wire hole, and the sieve plate is provided with a third wire hole, wherein the diameter of the second wire hole is larger than the diameter of the first wire hole and the diameter of the third wire hole, respectively.

[0014] The above-mentioned press-type online filter is normally unloaded on the screen plate, which only contacts the pressure column. When in use, pressing the press component causes the gasket to buffer and transmit the pressure to the pressure column, thus subjecting the screen plate to force. The sealing conduit is welded to the hole in the pressure column, allowing the filter to be connected to equipment or parts. The weld can withstand high pressure. This product makes assembly and use more convenient, requires no tools, and is easier to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an existing online filter; Figure 2 An exploded view of one embodiment of the press-type online filter; Figure 3 This is a schematic diagram of the structure of a push-button in-line filter according to one embodiment; Figure 4 A cross-sectional view of one embodiment of a press-type online filter; Figure 5 This is a connection structure diagram of the pressure column and gasket in one embodiment; Figure 6 This is a schematic diagram of the sieve plate in one embodiment. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figures 2 to 4 As shown, a press-type online filter includes a housing 1, a pressure column 2, a screen plate 3, a lower seat 4, a pressing element 5, and a gasket 6. The gasket 6, pressure column 2, and screen plate 3 are respectively disposed inside the housing 1. The pressing element 5 and lower seat 4 are disposed at both ends of the housing 1. The screen plate 3 is located between the lower seat 4 and the pressure column 2. The gasket 6 is located between the pressing element 5 and the pressure column 2. Through-holes 8 are formed inside the gasket 6, pressure column 2, screen plate 3, and lower seat 4. The gasket 6 is a plastic gasket.

[0019] In the above-mentioned press-type online filter, the screen plate 3 is not under force under normal conditions and only contacts the pressure column 2. When in use, pressing the pressing part 5 causes the gasket 6 to buffer and transmit the pressure from the gasket 6 to the pressure column 2, thus putting force on the screen plate 3. The sealing conduit 9 is welded into the hole of the pressure column 2, allowing the filter to be connected to equipment or parts. The weld can withstand high pressure. This product makes assembly and use more convenient, requires no tools, and is more convenient to use.

[0020] In one embodiment, the pressing member 5 is an eccentric wheel lever or a convex lever, and the outer shell 1 is provided with a pin 7. The eccentric wheel lever or convex lever is rotatably mounted on the pin 7, and the end of the eccentric wheel lever or convex lever near the pin 7 abuts against the gasket 6. The pin 7 has a first threading hole 8.

[0021] In one embodiment, the outer casing 1 is provided with a bracket 10, and the pin 7 is fixedly mounted on the bracket 10.

[0022] like Figure 5 As shown, in one embodiment, the gasket 6 is connected to the pressure column 2 via a slot. Specifically, the gasket 6 is provided with a protrusion 61, and the pressure column 2 is provided with a corresponding slot 21, with the protrusion 61 disposed within the slot 21.

[0023] like Figure 3 and Figure 6 As shown, in one embodiment, an installation groove 11 is provided between the lower seat 4 and the pressure column 2, and the screen plate 3 is disposed in the installation groove 11.

[0024] In one embodiment, the lower seat 4 is provided with a first wire hole 41, the pressure column 2 is provided with a second wire hole 22, and the sieve plate 3 is provided with a third wire hole 31. The diameter of the second wire hole 22 is larger than the diameter of the first wire hole 41 and the diameter of the third wire hole 31, respectively. The first wire hole 41, the second wire hole 22, and the third wire hole 31 are connected to form a through wire hole 8.

[0025] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A press-type online filter, characterized in that, The device includes a housing, a pressure column, a sieve plate, a lower seat, a pressing element, and a gasket. The gasket, the pressure column, and the sieve plate are respectively disposed inside the housing. The pressing element and the lower seat are disposed at both ends of the housing. The sieve plate is located between the lower seat and the pressure column. The gasket is located between the pressing element and the pressure column. A through-hole is formed inside the gasket, the pressure column, the sieve plate, and the lower seat.

2. The press-type online filter according to claim 1, characterized in that, The pressing component is an eccentric wheel lever or a convex lever. The housing is provided with a pin. The eccentric wheel lever or the convex lever is rotatably mounted on the pin. The end of the eccentric wheel lever or the convex lever near the pin abuts against the gasket.

3. The press-type online filter according to claim 2, characterized in that, The outer casing is provided with a bracket, and the pin is fixedly mounted on the bracket.

4. The press-type online filter according to claim 2, characterized in that, The pin has a first thread hole.

5. The press-type online filter according to claim 1, characterized in that, The gasket is a plastic gasket.

6. The press-type online filter according to claim 1, characterized in that, The gasket is connected to the pressure column slot.

7. The press-type online filter according to claim 6, characterized in that, The gasket has a protrusion, and the pressure column has a corresponding slot, with the protrusion located within the slot.

8. The press-type online filter according to claim 1, characterized in that, An installation groove is provided between the lower seat and the pressure column, and the sieve plate is disposed in the installation groove.

9. The press-type online filter according to claim 1, characterized in that, The lower seat is provided with a first wire hole, the pressure column is provided with a second wire hole, and the sieve plate is provided with a third wire hole, wherein the diameter of the second wire hole is larger than the diameter of the first wire hole and the diameter of the third wire hole, respectively.

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