Separated fixing structure for upper layer of filter paper group of chemical liquid filter

Abstract

The utility model discloses a chemical liquid filter filter paper group upper layer separation type fixing structure which comprises a bottom plate and an outer pressing plate, a through groove is formed in the center of the top of the outer pressing plate, an inner thread is formed in the inner wall of the through groove, the inner thread on the inner wall of the through groove is in threaded connection with an inner pressing plate, and an outer thread is arranged on the outer side of the inner pressing plate. A center column threaded sleeve is arranged in the center of the bottom of the inner pressing plate. A rotary knob seat is installed in the center of the top of the inner pressing plate, counter bores are formed in the two ends of the surface of the top of the outer pressing plate, and external auxiliary tools are connected into the counter bores in a sleeved mode to be inserted, twisted and tightened. The outer pressing plate, the inner pressing plate, the inner threads, the counter bore, the central column threaded sleeve, the knob seat and other parts are arranged and used in cooperation, so that when filter paper is placed on a filter disc, the outer end and the inner end of the surface of the filter paper are pressed and fixed at the same time, and the stability and the sealing performance of the filter paper during pressing and fixing are improved; in addition, through the arrangement of the components, the effects of dismounting, replacing and mounting are also facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical liquid filtration, in particular to an upper layer separation type fixing structure of a filter paper group of a chemical liquid filter. Background Art

[0002] Chemical liquids usually refer to liquid solutions used for various chemical reactions, experiments, industrial processes or medical purposes. These solutions may contain one or more chemical substances, which can be acids, bases, salts, organic compounds, solvents, etc. Chemical liquids are widely used in laboratory research, industrial production, medical treatment and other fields. In addition, when filtering chemical liquids, filter paper groups on filter paper filters are used to filter them.

[0003] However, the filter paper group on the existing filter paper filter has poor stability and sealing when it is fixed, which easily reduces the quality of chemical liquid filtration. Utility Model Content

[0004] The purpose of the utility model is to provide a separate fixing structure for the upper layer of a filter paper group of a chemical liquid filter. The utility model is used in conjunction with components such as an outer pressure plate, an inner pressure plate, an inner thread, a countersunk hole, a center column threaded sleeve and a knob seat, so that when the filter paper is placed on the filter disc, the outer end and the inner end of the filter paper surface are simultaneously pressed and fixed, so as to improve the stability and sealing of the filter paper when it is pressed and fixed; so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The upper layer separation fixing structure of the filter paper group of the chemical liquid filter comprises a bottom plate and an outer pressure plate, a through groove is provided at the top center of the outer pressure plate, and an inner thread is provided on the inner wall of the through groove, the inner thread of the inner wall of the through groove is threadedly connected to the inner pressure plate, an outer thread is provided on the outer side of the inner pressure plate, and a center column threaded sleeve is provided at the bottom center of the inner pressure plate; a knob seat is installed at the top center of the inner pressure plate, countersunk holes are provided at both ends of the top surface of the outer pressure plate, and an external auxiliary tool is sleeved inside the countersunk hole to be inserted and twisted to tighten.

[0007] Preferably, handles for holding by hand are fixedly connected to both sides of the knob seat, and the inner threads of the center column threaded sleeve are connected to the outer threads of the center column.

[0008] Preferably, a filter tube is installed on the top center thread of the bottom plate, and the top thread of the filter tube is installed on the outer thread of the center column.

[0009] Preferably, a rubber pad is sleeved on the bottom of the filter tube, and a PP plate is placed on the top surface of the rubber pad.

[0010] Preferably, a plurality of groups of superimposed filter discs are sequentially arranged on the top of the PP plate, and the filter discs are sleeved on the surface of the filter tube.

[0011] Preferably, the top surfaces of the plurality of groups of filter discs are connected with filter paper via a limiting disc sleeve, and the limiting disc sleeve is fixedly installed at the top center of the filter disc.

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

[0013] The utility model is provided with an outer pressure plate, an inner pressure plate, an inner thread, a countersunk hole, a center column thread sleeve and a knob seat and other components for use in combination, so that when the filter paper is placed on the filter sheet, the outer end and the inner end of the filter paper surface are simultaneously pressed and fixed, so as to improve the stability and sealing performance of the filter paper when it is pressed and fixed;

[0014] Furthermore, by providing the above components, it is also convenient to disassemble, replace and install the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the separation structure of the filter tube, the outer pressure plate and the inner pressure plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the outer pressure plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the inner pressure plate of the utility model;

[0019] Figure 5 This is a schematic diagram of the filter structure of the utility model.

[0020] In the figure: 1, bottom plate; 2, filter tube; 3, outer thread of center column; 4, outer pressure plate; 5, inner pressure plate; 501, inner thread; 6, countersunk hole; 7, threaded sleeve of center column; 8, knob seat; 801, handle; 9, rubber pad; 10, filter disc; 11, filter paper. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 5 , the utility model provides a technical solution:

[0023] The upper layer separation fixing structure of the filter paper group of the chemical liquid filter comprises a bottom plate 1 and an outer pressure plate 4. A through groove is provided at the top center of the outer pressure plate 4, and an inner thread 501 is provided on the inner wall of the through groove. The inner thread 501 on the inner wall of the through groove is threadedly connected with the inner pressure plate 5. An outer thread is provided on the outer side of the inner pressure plate 5. By providing the through groove and the inner thread 501, it is convenient to thread the inner pressure plate 5 and to replace it, thereby improving its use effect. In addition, it is also convenient to rotate the inner pressure plate 5 on the inner wall of the through groove to descend and ascend. A central column screw is provided at the bottom center of the inner pressure plate 5. The threaded sleeve 7 is convenient for threading it onto the outer thread 3 of the center column, so that the inner pressure plate 5 can press and fix the inner end of the surface of the filter paper 11; a knob seat 8 is installed at the top center of the inner pressure plate 5, so as to facilitate the fixed support of the knob seat 8; the two sides of the knob seat 8 are fixedly connected with handles 801 for holding by hand, and the inner thread of the center column threaded sleeve 7 is connected with the outer thread 3 of the center column; countersunk holes 6 are provided at both ends of the top surface of the outer pressure plate, and the internal sleeve of the countersunk hole 6 is connected with an external auxiliary tool to be inserted and twisted to tighten, so as to improve the effect of the outer pressure plate 4 pressing and sealing the outer end of the filter paper 11.

[0024] The utility model provides the outer pressure plate 4, the inner pressure plate 5, the inner thread 501, the countersunk hole 6, the center column thread sleeve 7 and the knob seat 8 and other components for use in combination, so that when the filter paper 11 is placed on the filter disc 10, the outer end and the inner end of the surface of the filter paper 11 are simultaneously pressed and fixed, so as to improve the stability and sealing of the filter paper 11 when pressed and fixed. In addition, by providing the above components for use in combination, it is also convenient to disassemble, replace and install the filter paper 11.

[0025] Take the outer pressure plate 4 by hand and insert the center of the inner pressure plate 5 arranged inside it into the outer thread 3 of the center column. Then, hold the handle 801 on the knob seat 8 by hand and rotate it so that the center column threaded sleeve 7 and the center column outer thread 3 arranged at the bottom center of the inner pressure plate 5 are twisted and tightened so as to press and fix the inner end of the surface of the filter paper 11 on the filter disc 10. Then, operate the external auxiliary tool by hand to insert it into the countersunk holes 6 opened at both ends of the top surface of the outer pressure plate 4, and rotate it to tighten it so that the outer pressure plate 4 presses and fixes the outer end of the surface of the filter paper 11, thereby improving the stability and sealing of the filter paper 11 when being pressed and fixed.

[0026] Furthermore, when it is necessary to disassemble the clamping and fixing structure, the outer pressure plate 4 is taken by hand and the knob seat 8 is twisted in the reverse direction to disengage the outer thread on the inner pressure plate 5 from the inner thread 501 in the through groove, so that the inner pressure plate 5 can be separated and disassembled from the outer pressure plate 4. The reverse operation can be performed to install the threads.

[0027] The top center thread of the bottom plate 1 is installed with a filter tube 2, so that the filter tube 2 can be installed and disassembled by thread; and the top thread of the filter tube 2 is installed with a central column outer thread 3, which is also convenient for the removal, replacement and installation of the central column outer thread 3; the bottom of the filter tube 2 is sleeved with a rubber pad 9, so that it is convenient to support and place the PP board; and the top surface of the rubber pad 9 is placed with a PP board, so that it is convenient to support and place the filter disc 10; the top of the PP board is sequentially provided with several groups of superimposed filter discs 10, so that it is convenient to place the filter paper 11, and the material of the filter disc 10 can be paper, cloth, metal mesh, ceramic, plastic or other synthetic materials, and the specific selection depends on the application requirements and filtering goals. The design and manufacture of the filter disc 10 need to take into account factors such as filtration efficiency, flow rate, durability and cost.

[0028] The filter disc 10 is sleeved on the surface of the filter tube 2, and the top surface of several groups of filter discs is sleeved with filter paper through a limit plate, and the limit plate sleeve is fixedly installed on the top center of the filter disc; the filter paper 11 is mostly composed of cotton fibers and is made using different methods according to different uses. Because its material is a fiber product, its surface has countless small holes for liquid particles to pass through, while larger solid particles cannot pass through. This property allows the separation of mixed liquid and solid substances. The filter paper 11 can generally be divided into qualitative and quantitative types; in the application of analytical chemistry, when inorganic compounds are filtered to separate the precipitate, the residue collected on the filter paper 11 can be used to calculate the loss rate during the experiment. Qualitative filter paper has more cotton fibers generated after filtration, so it is only suitable for qualitative analysis; quantitative filter paper, especially ash-free filter paper 11, undergoes a special treatment procedure and can more effectively resist chemical reactions, so the generated impurities are less and can be used for quantitative analysis. In addition to the filter paper 11 used in general laboratories, there are many applications of filter paper 11 in life and engineering. Coffee filter paper is one of the widely used filter papers 11, and the filter paper 11 on the outer layer of tea bags provides high softness and high wet strength. Other uses include air filter paper for testing suspended particles in the air, and fiber filter paper for different industrial applications. Several groups of filter sheets 10 are sequentially inserted into the filter tube 2. The filter tube 2 mainly serves to install the filter sheets 10;

[0029] During specific use, the outer pressure plate 4 is taken by hand, and the center of the inner pressure plate 5 arranged inside it is inserted into the outer thread 3 of the center column. Then, the handle 801 on the knob seat 8 is held by hand to rotate it so that the center column threaded sleeve 7 arranged at the center of the bottom of the inner pressure plate 5 and the outer thread 3 of the center column are twisted and tightened, so as to press and fix the inner end of the surface of the filter paper 11 on the filter disc 10. Then, the external auxiliary tool is operated by hand to insert it into the countersunk holes 6 opened at both ends of the top surface of the outer pressure plate 4, and it is rotated and tightened so that the outer pressure plate 4 presses and fixes the outer end of the surface of the filter paper 11; thereby improving the stability and sealing of the filter paper 11 when pressed and fixed.

[0030] Furthermore, when it is necessary to disassemble the clamping and fixing structure, the outer pressure plate 4 is taken by hand and the knob seat 8 is twisted in the reverse direction to disengage the outer thread on the inner pressure plate 5 from the inner thread 501 in the through groove, so that the inner pressure plate 5 can be separated and disassembled from the outer pressure plate 4. The reverse operation can be performed to install the threads.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A separate upper fixed structure for filter paper group of a chemical liquid filter, comprising a bottom plate (1) and an outer pressure plate (4), characterized in that: A through groove is provided at the center of the top of the outer pressure plate (4), and an internal thread (501) is provided on the inner wall of the through groove. The internal thread (501) on the inner wall of the through groove is threadedly connected to the inner pressure plate (5). An external thread is provided on the outer side of the inner pressure plate (5). A center column threaded sleeve (7) is provided at the center of the bottom of the inner pressure plate. A knob seat (8) is installed at the center of the top of the inner pressure plate (5). Countersunk holes (6) are provided at both ends of the top surface of the outer pressure plate. An external auxiliary tool is inserted into the internal sleeve of the countersunk hole (6) to be tightened.

2. The upper layer separation fixing structure of filter paper group of chemical liquid filter according to claim 1 is characterized by: Handles (801) for holding by hand are fixedly connected to both sides of the knob seat (8), and the inner thread of the center column thread sleeve (7) is connected to the outer thread of the center column (3).

3. The upper layer separation fixing structure of filter paper group of chemical liquid filter according to claim 1 is characterized by: The top center thread of the bottom plate (1) is threadedly mounted with a filter tube (2), and the top center thread of the filter tube (2) is threadedly mounted with a center column outer thread (3).

4. The upper layer separation fixing structure of filter paper group of chemical liquid filter according to claim 3 is characterized by: The bottom of the filter tube (2) is sleeved with a rubber pad (9), and the top surface of the rubber pad (9) is provided with a PP plate.

5. The upper layer separation fixing structure of filter paper group of chemical liquid filter according to claim 4 is characterized in that: A plurality of groups of superimposed filter sheets (10) are sequentially arranged on the top of the PP plate, and the filter sheets (10) are sleeved on the surface of the filter tube (2).

6. The upper layer separation fixing structure of filter paper group of chemical liquid filter according to claim 5 is characterized in that: The top surfaces of the plurality of groups of filter discs (10) are connected with filter paper (11) via a limiting disc sleeve, and the limiting disc sleeve is fixedly installed at the top center of the filter disc (10).

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