Large-flow ambient air particulate matter rectangular filter membrane cutter

Abstract

The invention provides a large-flow ambient air particulate matter rectangular filter membrane cutter which comprises a base and a cutting cover. A rectangular frame is arranged on the base; a clamping groove is formed in the frame; a cylinder is arranged in the center of the cutting cover, a cutting reserved opening is formed in the lower portion of the cylinder, a cover plate is arranged in the middle of the cylinder, a groove is formed in the lower portion of the cover plate, and different numbers of ceramic blades are placed in the groove according to different cutting requirements. According to the device, multiple cutting modes are adopted, the rectangular filter membrane can be accurately divided into different parts by selecting different blades through the eight-part cutting reserved opening of the first cutting cover and the #-shaped cutting reserved opening of the second cutting cover, and the accurate requirement for filter membrane cutting in experiment and practical application is met; the device is used for precisely dividing the large-flow ambient air rectangular filter membrane into two parts, three parts, four parts, eight parts and nine parts, the filter membrane can be conveniently and rapidly cut, the experiment efficiency is improved, and the experiment error in the pretreatment stage is reduced.

Description

Technical Field

[0001] The invention relates to the field of pre-processing of atmospheric particle detection and analysis, and in particular to a rectangular filter membrane cutter for large-flow ambient air particles. Background Art

[0002] The high-flow air particle sampler uses a high-quality turbine negative pressure pump as its power source. The main process is: the particles in the ambient air are retained by the filter membrane and deposited on the filter membrane, and the gas is discharged through the sampling hopper, the pressure port, and the motor cylinder exhaust port. The atmospheric particles required for the experiment pass through cutters of different particle sizes. In order to dissolve the particles adsorbed on the rectangular filter membrane, the rectangular filter membrane must first be cut. Of course, the entire membrane can also be dissolved. However, considering the precision and accuracy requirements during the experiment, parallel experiments or control experiments are required, that is, the rectangular filter membrane needs to be cut into equal parts, and each part is digested and tested separately.

[0003] A fixed circular filter membrane precision separator proposed in Chinese invention patent application No.: 202111372541.3 includes: an upper cover and a support platform; the upper surface of the upper cover is provided with a radially extending vertical groove, the upper part of the groove is a cutting groove, and the lower part of the groove is a blade groove, and the width of the cutting groove is smaller than the width of the blade groove; a pressure ring is arranged in the inner surface of the upper cover, and the bottom of the blade groove is flush with the lower surface of the pressure ring, and the support platform is configured to be adapted to fit tightly with the upper cover, and in the fastened state, the top of the support platform is supported on the lower surface of the pressure ring.

[0004] Application No.: 202111372541.3 proposes a fixed circular filter membrane precision separator, which is a circular filter membrane separator. Due to the different samplers for atmospheric particulate matter, there are circular filter membranes and rectangular filter membranes. The existing patent is only for the segmentation and cutting of circular filter membranes. This is one of the shortcomings of the existing technical solution, which is only applicable to one shape. Another disadvantage is that in order to conduct parallel experiments or repeated experiments in the actual experiment, most experimenters directly use tweezers to fold the rectangular filter membrane in half and then divide and cut it. This cutting method will have a large human operation error, which paves the way for subsequent digestion and instrument testing. An operational error, resulting in a large standard deviation between parallel samples, seriously affects the research results, and the existing technology has difficulties in achieving accurate separation of filter membranes. Traditional cutting methods often cannot guarantee the accuracy of the separation, resulting in large errors in the experimental results, and cannot meet the requirements for accurate analysis of ambient air particulate matter.

[0005] Secondly, the operation process is relatively complicated and cumbersome. When using the existing filter membrane cutting equipment, it needs to go through multiple complicated steps, which not only consumes time and manpower, but also is prone to operating errors, affecting work efficiency and cutting quality.

[0006] Furthermore, the stability of the filter membrane during the cutting process is insufficient. Existing equipment is difficult to effectively fix the filter membrane, making the filter membrane prone to movement or deformation during the cutting process, thereby affecting the accuracy and consistency of the cutting.

[0007] In addition, the replacement of the blade in the existing cutting equipment is often difficult. When the blade is worn, it cannot be replaced in time and conveniently, which will affect the long-term use effect and cutting quality of the cutter.

[0008] Finally, the existing technology has poor flexibility. Usually only a single cutting method can be used, which cannot be flexibly adjusted according to actual needs and cannot meet the diverse needs of different experiments and application scenarios. Therefore, we have made improvements to this and proposed a large-flow ambient air particulate rectangular filter membrane cutter. Summary of the invention

[0009] The purpose of the present invention is to solve the problems of the existing background technology. The present invention mainly solves the technical problem of rectangular filter membrane cutting. The present invention provides the following technical solutions: a rectangular filter membrane cutting device for large-flow ambient air particulate matter, comprising: a base and a cutting cover; a rectangular frame is provided on the base; a card slot is provided on the frame;

[0010] A cylinder is provided at the center of the cutting cover, a cutting reserved opening is provided at the lower part of the cylinder, a cover plate is provided at the middle part of the cylinder, a groove is provided below the cover plate, and a blade is provided in the groove;

[0011] As a preferred technical solution of the present invention, the cutting cover includes a first cutting cover and a second cutting cover.

[0012] As a preferred technical solution of the present invention, a card slot is provided in the middle, at one third and at two thirds of the two short sides of the frame; a card slot is provided in the middle, at one third and at two thirds of the two long sides of the frame; a card slot is provided at the four corners of the frame, and an upper ruler is marked on the frame.

[0013] As a preferred technical solution of the present invention, a first cylinder is arranged in the middle of the first cutting cover, a first cutting reserved opening is arranged below the first cylinder, a first ceramic blade with a scale is arranged on the first cutting reserved opening, a first cover plate is arranged in the middle of the upper part of the cylinder, a corresponding first groove is arranged below the first cover plate, and a first blade is arranged in the first groove.

[0014] As a preferred technical solution of the present invention, the first cover plate is rectangular, the upper portion of the cylinder is solid, and the lower portion of the cylinder is a reserved opening.

[0015] As a preferred technical solution of the present invention, the first groove is an eight-part groove, eight first blades are provided, and are respectively arranged in the eight-part grooves, and a blade groove is provided on the first blade;

[0016] As a preferred technical solution of the present invention, the first cylinder, the base, and the first cutting cover are made of polytetrafluoroethylene or ceramic material; the first blade is made of ceramic material; and the first cutting reserved opening is an eight-point cutting reserved opening.

[0017] As a preferred technical solution of the present invention, the second cutting cover is provided with a second cylinder, a tic-tac-toe second cutting reserved opening is provided at the lower part of the second cylinder, the second cutting reserved opening is equipped with a sized ceramic second blade, the second cylinder and the second cutting cover are made of polytetrafluoroethylene or ceramic material; the second blade is made of ceramic material.

[0018] As a preferred technical solution of the present invention, a rectangular second cover plate is arranged on the upper part of the second cylinder, and a corresponding tic-tac-toe groove is arranged under the second cover plate. A different number of the second blades are selected for each tic-tac-toe groove according to cutting requirements.

[0019] As a preferred technical solution of the present invention, the second cutting reserved opening is in a well-shaped shape, and the base is used to support a rectangular membrane. The rectangular membrane is 254 mm long and 203.2 mm wide, and the base is made of ceramic material.

[0020] Compared with the prior art, the invention has the following beneficial effects: In the scheme of the invention: the invention is a device for accurately dividing a rectangular filter membrane of large-flow ambient air into two, three, four, eight, or nine parts, which is convenient for quickly cutting the filter membrane, improving experimental efficiency, and reducing experimental errors in the pre-treatment stage;

[0021] The present invention has multiple cutting modes, and can accurately divide the rectangular filter membrane into different numbers of parts through the eight-part cutting reserved opening of the first cutting cover and the cross-cutting reserved opening of the second cutting cover, so as to meet the precise requirements for filter membrane division in experiments and practical applications.

[0022] When the present invention is used, it is only necessary to place the filter membrane in the frame of the base, select a suitable cutting cover, install the blade, and then press down the cutting cover to complete the cutting operation. The operation process is simple and fast, saving time and manpower.

[0023] The length and width of the inner diameter of the rectangular frame on the base of the present invention are just consistent with the size of the rectangular filter membrane, and the multiple slots on the frame can effectively fix the filter membrane and more firmly stabilize the ceramic blade, ensuring that the filter membrane will not move or deform during the cutting process, thereby improving the stability and accuracy of the cutting.

[0024] The blade arranged in the groove of the cutting cover of the present invention can be removed or installed at any time, so that the worn blade can be replaced conveniently, thereby ensuring the long-term use effect of the cutter.

[0025] The cylindrical body of the cutting cover of the present invention is made of ceramic material, has good wear resistance and corrosion resistance, and can ensure the service life and performance of the cutter.

[0026] The cutter of the present invention is equipped with two different cutting covers, and users can choose to use them according to actual needs. It has high flexibility and can meet different experiments and application scenarios.

[0027] The cutter of the present invention can quickly and accurately complete the segmentation and cutting of the filter membrane, thereby improving the working efficiency and helping to accelerate the experimental process and the operation speed in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure provided by the present invention;

[0029] Figure 2 A schematic diagram of the frame structure provided by the present invention;

[0030] Figure 3 A schematic diagram of the first cutting cover structure provided by the present invention;

[0031] Figure 4 A schematic diagram of the blade structure provided by the present invention;

[0032] Figure 5 A schematic diagram of the structure of the second cutting cover provided by the present invention;

[0033] Figure 6 A schematic diagram of the blade structure provided by the present invention;

[0034] Figure 7 A schematic diagram of a first cutting cover provided by the present invention;

[0035] Figure 8 A schematic diagram of a second cutting cover provided by the present invention;

[0036] Fig. 9 A partial schematic diagram of the knife groove provided by the present invention.

[0037] Indicated in the figure:

[0038] 1. Base; 2. Frame; 201. Upper ruler; 3. Card slot;

[0039] 4. Cut the cover;

[0040] 41. first cutting cover; 411. first cylinder; 412. first cutting reserved opening; 413. first cover plate; 414. first groove; 415. first blade;

[0041] 42, second cutting cover; 421, second cylinder; 422, second cutting reserved opening; 423, second cover plate; 424, second groove; 425, second blade;

[0042] 5. Knife groove. DETAILED DESCRIPTION

[0043] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0044] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0045] Example 1: Please refer to Figure 1-Figure 9 A rectangular filter membrane cutter for large-flow ambient air particles comprises: a base 1 and a cutting cover 4; a rectangular frame 2 is arranged on the base 1; a card slot 3 is arranged on the frame 2; a cylinder is arranged at the center of the cutting cover 4, a cutting reserved opening is arranged at the lower part of the cylinder, a cover plate is arranged at the middle part of the cylinder, a groove is arranged below the cover plate, and a blade is arranged in the groove;

[0046] The cutting cover 4 includes a first cutting cover 41 and a second cutting cover 42;

[0047] A card slot 3 is provided in the middle, at one third and at two thirds of the two short sides of the frame 2; a card slot 3 is provided in the middle, at one third and at two thirds of the two long sides of the frame 2; and a card slot 3 is provided at the four corners of the frame 2.

[0048] A first cylinder 411 is arranged in the middle of the first cutting cover 41, a first cutting reserved opening 412 is arranged below the first cylinder 411, a first ceramic blade with a scale is arranged on the first cutting reserved opening 412, a first cover plate 413 is arranged in the middle of the upper part of the cylinder, a corresponding first groove 414 is arranged below the first cover plate 413, and a first blade 415 is arranged in the first groove 414. A knife groove 5 is opened on the first blade 415, the first cover plate 413 is rectangular, the upper part of the cylinder is solid, and the lower part of the cylinder is a reserved opening. The first groove 414 is an eight-point groove, and eight first blades 415 are arranged, which are respectively arranged in the eight-point groove; the first cylinder 411, the base 1, and the first cutting cover 41 are made of polytetrafluoroethylene or ceramic material; the first blade 415 is made of ceramic material; the first cutting reserved opening 412 is an eight-point cutting reserved opening.

[0049] The second cutting cover 42 is provided with a second cylinder, and a second tic-tac-toe cutting reserved opening 422 is provided at the lower part of the second cylinder 421. The second cutting reserved opening 422 is equipped with a ceramic second blade 425 with a scale, and a knife groove 5 is provided on the second blade 425. The second cylinder 421 and the second cutting cover 42 are made of polytetrafluoroethylene or ceramic material; the second blade 425 is made of ceramic material; a rectangular second cover plate 423 is provided at the upper part of the second cylinder 421, and a corresponding tic-tac-toe groove is provided below the second cover plate 423. Each tic-tac-toe groove selects a different number of second blades 425 according to the cutting requirements, and a knife groove 5 is provided on the second blade 425; a corresponding tic-tac-toe groove is provided below the second cover plate 423. The second cutting reserved opening 422 is a tic-tac-toe shape, and the base 1 is used to support a rectangular film, which is 254 mm long and 203.2 mm wide, and the base 1 is made of ceramic material.

[0050] The working principle of the large flow ambient air particulate rectangular filter is as follows:

[0051] 1. Base 1 and rectangular frame 2: The base 1 provides support, the frame 2 determines the placement range of the filter membrane, and the card slot 3 on the frame 2 is used to fix the filter membrane and the cutting cover 4.

[0052] 2. First cutting cover 41:

[0053] First cylinder 411: The lower part of the middle ceramic cylinder has eight reserved openings for cutting, and each reserved opening is equipped with a ceramic blade with a scale for accurately cutting the filter membrane.

[0054] First cover plate 413: The solid part on the top and the rectangular cover plate on the bottom play the role of fixing and protecting the blade.

[0055] Eight-point groove: cooperates with the blade to ensure the accuracy of cutting.

[0056] 3. Second cutting cover 42:

[0057] Second cylinder: The tic-tac-toe cutting opening at the bottom is equipped with a ceramic blade to achieve the cutting of the filter membrane.

[0058] Second cover plate 423: The upper rectangular cover plate and the tic-tac-toe groove below are used to fix and guide the blade.

[0059] 4. Cutting operation: Place the filter membrane to be cut in the frame 2 and fix it through the card slot 3. Select the first cutting cover 41 or the second cutting cover 42 as needed, press it down, and let the blade cut the filter membrane along the reserved opening to achieve separation. The cutter can accurately separate and cut the rectangular filter membrane to meet different experimental and application requirements.

[0060] The working process of the large flow ambient air particulate rectangular filter cutter is as follows:

[0061] 1. Preparation: Place the base 1 on a stable workbench and ensure that the frame 2 is level.

[0062] 2. Place the filter membrane: Place the rectangular filter membrane in the frame 2 of the base 1, and use the first cutting cover 41 or the second cutting cover 42 as needed.

[0063] 3. Select cutting cover 4:

[0064] The first cutting cover 41 is suitable for dividing the filter membrane into two, four or eight parts.

[0065] The second cutting cover 42 is used to divide the filter membrane into nine equal parts.

[0066] 4. Install cutting parts:

[0067] First cutting cover 41 : A ceramic first blade 415 with a scale is installed in the first groove 414 .

[0068] Second cutting cover 42 : A ceramic second blade 425 with a scale is installed in the second groove 424 .

[0069] 5. Cutting: Place the cutting cover 4 on the frame 2, ensuring that the cylinder is aligned with the frame 2. Then, press down the cutting cover 4 by hand or with an appropriate tool, so that the blade passes through the cutting reserved opening to complete the cutting of the filter membrane.

[0070] 6. Cutting is completed: lift the cutting cover 4 and take out the cut filter membrane. If necessary, the next cutting operation can be continued.

[0071] 7. Cleaning and maintenance: After use, clean all parts of the cutter to ensure they are clean and tidy. Check the sharpness of the blade and replace the blade in time if necessary.

[0072] Embodiment 2: A rectangular filter membrane cutter for large-flow ambient air particulate matter, comprising a base 1 for supporting a rectangular membrane; a rectangular frame 2 is arranged on the base 1, and the frame 2 is 0.5 cm high, 25.4 cm long, and 20.33 cm wide; a card slot 3 is arranged in the middle, one-third, and two-thirds of the two short sides of the frame 2; a card slot 3 is arranged in the middle, one-third, and two-thirds of the two long sides of the frame 2; and a card slot 3 is arranged in the four corners of the frame 2. A ruler 201 is provided on the frame 2.

[0073] Secondly, make another rectangular first cutting cover 41. In the middle of the first cutting cover 41 is a ceramic first cylinder 411 with a diameter of 12 cm and a height of 2 cm. There is an eight-point first cutting reserved opening 412 at 0.5 cm below the first cylinder 411. There are eight openings, and the upper 1.5 cm of the first cylinder 411 is solid. Each reserved opening is equipped with a ceramic first blade 415 with a scale. There is a rectangular first cover plate 413 about 1.5 cm above the first cylinder 411, and a corresponding eight-point first groove 414 is provided below the first cover plate 413. The ceramic first blade 415 in the first groove 414 can be removed or installed at any time. When in use, the first cutting cover 41 is directly pressed down hard, and the sharp ceramic first blade 415 can accurately divide the filter membrane into two, four, or eight parts.

[0074] Working principle of large flow ambient air particulate rectangular filter cutter:

[0075] 1. Base 1 and frame 2:

[0076] The base 1 is used to support the rectangular film to ensure that the film remains stable during the cutting process.

[0077] The frame 2 is a rectangle with a height of 0.5 cm, a length of 25.4 cm and a width of 20.33 cm, which provides a boundary for the placement and cutting of the filter membrane. The card slot 3 on the frame 2 is used to fix the filter membrane and the cutting part.

[0078] 2. Function of slot 3:

[0079] The middle, one-third and two-thirds of the short side of the frame 2 are provided with card slots 3, the middle, one-third and two-thirds of the long side are provided with card slots 3, and the four corners are provided with card slots 3. The position design of these card slots 3 allows the filter membrane to be accurately fixed in the frame 2, and provides a reference point for the cutting operation to ensure the accuracy of the cutting.

[0080] 3. Ruler on border 2:

[0081] The ruler provided on the frame 2 is used to measure and mark the position of the filter membrane, helping the user to determine the cutting position and the proportion of the division.

[0082] 4. First cutting cover 41:

[0083] In the middle of the first cutting cover 41 is a ceramic first cylinder 411 with a diameter of 12 cm and a height of 2 cm.

[0084] There are eight first cutting reserved openings 412 at 0.5 cm below the first cylindrical body 411, with a total of eight openings. Each reserved opening is equipped with a ceramic first blade 415 with a scale.

[0085] The upper 1.5 cm of the first cylinder 411 is solid, which plays a supporting and stabilizing role.

[0086] A rectangular first cover plate 413 is provided about 1.5 cm above the first cylinder 411, and a corresponding first groove 414 is provided below the first cover plate 413. The ceramic first blade 415 in the first groove 414 can be removed or installed at any time.

[0087] 5. Cutting operation:

[0088] When in use, the filter membrane to be cut is placed in the frame 2 and the filter membrane is fixed by the clamping slot 3 .

[0089] The corresponding cutting method is selected according to the number of portions required. For example, if the filter membrane is to be divided into two, the two opposite blades of the first cutting cover 41 can be installed in the first groove 414, and then the first cutting cover 41 is pressed down hard. The sharp ceramic first blade 415 will cut the filter membrane along the reserved opening and divide it into two accurately.

[0090] If the filter membrane is to be divided into four parts, four adjacent blades can be installed in the first groove 414, and the first cutting cover 41 can be pressed down in the same manner to achieve the division of the filter membrane into four parts.

[0091] Embodiment 3: A rectangular filter membrane cutter for large-flow ambient air particulate matter, and a rectangular second cutting cover 42. In the middle of the second cutting cover 42 is a ceramic second cylinder 421 with a diameter of 8 cm and a height of 2 cm. There is a second tic-tac-toe cutting reserved opening 422 at 0.5 cm below the second cylinder 421, and the upper 1.5 cm of the second cylinder 421 is solid. It is equipped with 4 ceramic second blades 425 with scales. There is a rectangular second cover plate 423 about 1.5 cm above the second cylinder 421, and there is a corresponding tic-tac-toe second groove 424 below the second cover plate 423. The lower 0.5 cm part of the cylinder can be a separate part, which is screwed into the upper part to achieve a cutting cover 4 and two cutting heads;

[0092] When in use, the second cutting cover 42 is directly pressed down hard, and the sharp ceramic second blade 425 can accurately cut the filter membrane.

[0093] Working principle of the second cutting cover 42 in the rectangular filter membrane cutter for large flow ambient air particles:

[0094] 1. Structure of the second cutting cover 42:

[0095] In the middle of the second cutting cover 42 is a ceramic second cylinder 421 with a diameter of 8 cm and a height of 2 cm.

[0096] A second cutting reserved opening 422 is provided at 0.5 cm below the second cylinder 421 for installing a second ceramic blade 425 for cutting.

[0097] The upper 1.5 cm of the second cylinder 421 is solid, which plays a supporting and stabilizing role.

[0098] It is equipped with four ceramic second blades 425 with scales for cutting the filter membrane.

[0099] A rectangular second cover plate 423 is provided about 1.5 cm above the second cylinder 421 , and a corresponding tic-tac-toe-shaped second groove 424 is provided below the second cover plate 423 for mounting and fixing a ceramic second blade 425 .

[0100] 2. Detachable cylindrical structure:

[0101] The lower part of the cylinder of 0.5 cm can be a separate part, which is screwed into the upper part by a screw. Such a design realizes the function of one cutting cover 4 having two cutting heads. When the tic-tac-toe cutting function is required, the lower part with the tic-tac-toe cutting reserved opening is rotated and installed, and the corresponding ceramic second blade 425 is used for cutting; when other cutting methods are required, the part can be disassembled and replaced with other cutting parts or not installed to meet different cutting requirements.

[0102] 3. Cutting operation:

[0103] When in use, the filter membrane to be cut is placed in the frame 2 and fixed.

[0104] As required, the lower 0.5 cm portion of the cylindrical body of the second cutting cover 42 is rotated and installed to ensure that the reserved opening for the tic-tac-toe cutting is positioned correctly.

[0105] Four second ceramic blades 425 are installed in the tic-tac-toe second groove 424 below the second cover plate 423 .

[0106] Then the second cutting cover 42 is pressed down hard, and the sharp ceramic second blade 425 will cut the filter membrane along the reserved opening of the tic-tac-toe cutting, and divide it into nine parts accurately. The tic-tac-toe cutting will divide the filter membrane into nine parts.

[0107] Experimental example:

[0108] Purpose of the experiment: Use a large flow ambient air particle rectangular filter membrane cutter to accurately cut the filter membrane to meet the needs of air particle analysis.

[0109] Experimental Materials:

[0110] 1. Large flow ambient air particulate matter rectangular filter cutter

[0111] 2. Rectangular filter membrane to be cut

[0112] Experimental steps:

[0113] 1. Place the base 1 of the large flow ambient air particulate rectangular filter cutter on a stable workbench.

[0114] 2. Place the rectangular filter membrane to be cut flatly in the rectangular frame 2 of the base 1.

[0115] 3. According to the position of the slot 3 on the frame 2, insert the edge of the filter membrane into the slot 3 to ensure that the filter membrane is firmly fixed in the frame 2.

[0116] 4. According to the experimental requirements, select the first cutting cover 41 or the second cutting cover 42.

[0117] - If eight-point cutting is required, select the first cutting cover 41. Align the first cylinder 411 of the first cutting cover 41 with the center of the filter membrane, and then gently press down the pot cover to allow the first ceramic blade to cut the filter membrane along the eight-point cutting reserved opening.

[0118] - If a tic-tac-toe cutting is required, select the second cutting cover 42. Align the second cylinder of the second cutting cover 42 with the center of the filter membrane, and then gently press down the pot cover to allow the second ceramic blade to cut the filter membrane along the reserved opening for the tic-tac-toe cutting.

[0119] 5. After the cutting is completed, carefully lift the cutting cover 4 and take out the cut filter membrane part for subsequent air particle analysis experiments.

[0120] Experimental Notes:

[0121] 1. During operation, pay attention to safety and avoid injuries caused by contact with the blade.

[0122] 2. Make sure the filter membrane is placed flat and firmly fixed in the frame 2 to ensure the accuracy of cutting.

[0123] 3. When pressing down and lifting the cutting cover 4, the action should be gentle to avoid damage to the filter membrane and the cutter.

[0124] 4. After use, clean the residual filter membrane debris on the cutter in time to keep the cutter clean and in normal use

[0125] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A rectangular filter membrane cutter for large-flow ambient air particles, characterized in that: include: A base (1) and a cutting cover (4); The base (1) is provided with a rectangular frame (2); the frame (2) is provided with a card slot (3); A cylinder is arranged at the center of the cutting cover (4), a cutting reserved opening is arranged at the bottom of the cylinder, a cover plate is arranged at the middle of the cylinder, a groove is arranged below the cover plate, and a ceramic blade is arranged in the groove.

2. The rectangular filter membrane cutter for large-flow ambient air particles according to claim 1 is characterized in that: The cutting cover (4) comprises a first cutting cover (41) and a second cutting cover (42).

3. The rectangular filter membrane cutter for large-flow ambient air particles according to claim 1, characterized in that: A card slot (3) is provided in the middle of the two short sides of the frame (2), at one third and at two thirds; a card slot (3) is provided in the middle of the two long sides of the frame (2), at one third and at two thirds; card slots (3) are provided at the four corners of the frame (2), and an upper scale (201) is marked on the frame (2).

4. The rectangular filter membrane cutter for large-flow ambient air particles according to claim 2, characterized in that: A first cylinder (411) is arranged in the middle of the first cutting cover (41), a first cutting reserved opening (412) is arranged below the first cylinder (411), a first ceramic blade with a scale is arranged on the first cutting reserved opening (412), a first cover plate (413) is arranged in the middle of the upper part of the cylinder, a corresponding first groove (414) is arranged below the first cover plate (413), and a first blade (415) is arranged in the first groove (414).

5. The rectangular filter membrane cutter for large-flow ambient air particles according to claim 4, characterized in that: The first cover plate (413) is rectangular, the upper portion of the cylinder is solid, and the lower portion of the cylinder is a reserved opening.

6. The rectangular filter membrane cutter for large-flow ambient air particulate matter according to claim 4, characterized in that: The first groove (414) is an eight-part groove, and eight first blades (415) are provided, which are respectively arranged in the eight-part first groove (414), and a blade groove (5) is opened on the first blade (415).

7. The rectangular filter membrane cutter for large flow ambient air particles according to claim 4, characterized in that: The first cylinder (411), the base (1), and the first cutting cover (41) are made of polytetrafluoroethylene or ceramic material; the first blade (415) is made of ceramic material; and the first cutting reserved opening (412) is an eight-point cutting reserved opening.

8. The rectangular filter membrane cutter for large flow ambient air particles according to claim 2, characterized in that: The second cutting cover (42) is provided with a second cylindrical body (421), a second tic-tac-toe cutting reserved opening (422) is provided at the lower part of the second cylindrical body (421), the second cutting reserved opening (422) is equipped with a calibrated second ceramic blade (425), the second cylindrical body (421) and the second cutting cover (42) are made of polytetrafluoroethylene or ceramic material; the second blade (425) is made of ceramic material.

9. The rectangular filter membrane cutter for large-flow ambient air particles according to claim 8, characterized in that: A rectangular second cover plate (423) is arranged on the upper part of the second cylinder (421), and a corresponding tic-tac-toe groove is arranged below the second cover plate (423). Different numbers of the second blades (425) are selected for each tic-tac-toe groove according to cutting requirements, and a blade groove (5) is provided on the second blade (425).

10. The rectangular filter membrane cutter for large-flow ambient air particles according to claim 8, characterized in that: The second cutting reserved opening (422) is in a well-shaped shape. The base (1) is used to support a rectangular membrane. The rectangular membrane is 254 mm long and 203.2 mm wide. The base (1) is made of ceramic material.

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