Filter membrane box

Abstract

The utility model provides a filter membrane box, relates to the technical field of sampling equipment, and solves the technical problem that a filter membrane is easy to break in the prior art. The filter membrane box comprises a bottom cover, a top cover, a supporting part, an abutting ring and a filter membrane, the bottom cover and the top cover are both annular, the bottom cover and the top cover are detachably connected in a sleeved mode, the supporting part is arranged at the end, facing the top cover, of the bottom cover, the filter membrane is arranged at the end, away from the bottom cover, of the supporting part, and the abutting ring abuts against the filter membrane. One end, far away from the supporting part, of the filter membrane is provided with the abutting ring, the abutting ring abuts against the inner wall of the top cover, the supporting part comprises a plurality of supporting rods extending to the air passing holes of the bottom cover, and the filter membrane is arranged on the supporting rods. According to the utility model, the supporting part is arranged between the top cover and the filter membrane, so that a supporting effect is achieved, and the filter membrane is prevented from being broken when the pump body exhausts air.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling equipment, in particular to a filter membrane box. Background Art

[0002] Air dust sampling is the main means to detect the dust content in the air. It is often done by connecting a box with a filter membrane to a pump body with a vacuum function. After extracting air for a certain period of time, the filter membrane is removed for inspection. However, in actual filter membrane boxes, the filter membrane is directly set between the tightening ring and the bottom cover. There is a risk of filter membrane rupture when the actual pump body sucks air. Once the filter membrane ruptures, the sampling is declared a failure and can only be performed again. Repeating the operation results in a waste of labor and resources. Utility Model Content

[0003] The purpose of the utility model is to provide a filter membrane box, which solves the technical problem that the filter membrane is easy to break in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The filter membrane box provided by the utility model comprises a bottom cover, a top cover, a supporting portion, a tightening ring and a filter membrane, the bottom cover and the top cover are both annular, the bottom cover and the top cover are detachably sleeved, the supporting portion is arranged on one end of the bottom cover facing the top cover, the filter membrane is arranged on one end of the supporting portion away from the bottom cover, the tightening ring is arranged on one end of the filter membrane away from the supporting portion, the tightening ring is abutted against the inner wall of the top cover, the supporting portion comprises a plurality of supporting rods extending to the air holes of the bottom cover, and the filter membrane is arranged on the supporting rods.

[0006] Preferably, a plurality of the support rods are cross-arranged.

[0007] Preferably, a plurality of the support rods are crossed horizontally and vertically to form a mesh body.

[0008] Preferably, the support portion further comprises a connecting ring, the connecting ring is arranged on the annular end surface of the bottom cover, and both ends of the support rod are respectively connected to the connecting ring.

[0009] Preferably, flip parts are provided at two opposite ends of the connecting ring, the axes of the two flip parts coincide with each other, and the axes pass through the center of the connecting ring.

[0010] Preferably, the flipping portion comprises a hinge shaft, two hinge shafts are connected via a connecting rod, and the supporting rod is connected to two sides of the connecting rod.

[0011] Preferably, the flip portion comprises a hinge shaft, the support rod between two hinge shafts can be bent through a fold, and the fold and the hinge shaft are located in the same straight line.

[0012] Preferably, it also includes an outer box bottom and an outer box cover, the outer box bottom and the outer box cover are threadedly connected, a receiving cavity is formed between the outer box bottom and the outer box cover, and a combination of the bottom cover, the top cover, the support part, the clamping ring and the filter membrane is arranged in the receiving cavity.

[0013] This application adopts the above technical solution, which has at least the following beneficial effects:

[0014] The filter membrane box includes a bottom cover, a top cover, a supporting portion, a tightening ring and a filter membrane, the bottom cover and the top cover are both annular, the bottom cover and the top cover are detachably socketed, the supporting portion is arranged on one end of the bottom cover facing the top cover, the filter membrane is arranged on the end of the supporting portion away from the bottom cover, the tightening ring is arranged on the end of the filter membrane away from the supporting portion, the tightening ring is abutted against the inner wall of the top cover, the supporting portion includes a plurality of supporting rods extending to the air holes of the bottom cover, the filter membrane is arranged on the supporting rods, and the filter membrane is supported by the supporting portion, so that the filter membrane will not rupture when the pump body is evacuated in actual use.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the filter membrane box provided by the embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the filter membrane box without the top cover provided by the embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the bottom cover and the supporting part arrangement structure provided by an embodiment of the utility model;

[0020] Figure 4 It is a schematic structural diagram of a supporting part embodiment provided by an embodiment of the utility model;

[0021] Figure 5It is a schematic structural diagram of a mesh support portion embodiment provided by an embodiment of the utility model;

[0022] Figure 6 It is a schematic diagram of the top cover structure provided by an embodiment of the utility model;

[0023] Figure 7 It is a schematic diagram of the structure of the tightening ring provided in the embodiment of the utility model;

[0024] Figure 8 It is a schematic diagram of the filter membrane structure provided by the embodiment of the utility model;

[0025] Fig. 9 It is a schematic diagram of the overall structure of the filter membrane box provided in an embodiment of the utility model.

[0026] In the figure, 1 is the bottom cover; 2 is the top cover; 3 is the supporting part; 4 is the tightening ring; 5 is the filter membrane; 6 is the supporting rod; 7 is the connecting ring; 8 is the turning part; 9 is the bottom of the outer box; 10 is the outer box cover; 11 is the connecting rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0028] The specific embodiment of the utility model provides a filter membrane box, combined with the attached Figure 1 , including a bottom cover 1, a top cover 2, a support portion 3, a tightening ring 4 and a filter membrane 5,

[0029] The bottom cover 1 and the top cover 2 are both annular, and the bottom cover 1 and the top cover 2 are detachably connected, so that the two can be disassembled to take out the filter membrane 5 after the collection is completed. The bottom cover 1 and the top cover 2 can be connected in a threaded connection manner, for example, an external thread is provided on the outer peripheral wall of the bottom cover 1, and an internal thread is provided on the top cover 2;

[0030] A support portion 3 is provided on one end of the bottom cover 1 facing the top cover 2;

[0031] A filter membrane 5 is disposed at one end of the support portion 3 away from the bottom cover 1;

[0032] A tightening ring 4 is provided at one end of the filter membrane 5 away from the supporting portion 3;

[0033] The tightening ring 4 abuts against the inner wall of the top cover 2;

[0034] The specific support part 3 includes multiple support rods 6 extending to the air hole of the bottom cover 1, and the filter membrane 5 is arranged on the support rods 6. A part of the support part 3 is located at the annular end surface of the bottom cover 1 and the edge of the filter membrane 5. A part of the support part 3 is the support rods 6 extending to the air hole to support the filter membrane 5, thereby ensuring that the filter membrane 5 is supported when the pump body is actually started to pump air, thereby avoiding damage to the filter membrane 5.

[0035] The support rod 6 may be a rod structure that crosses the air hole.

[0036] In a specific embodiment of the present application, a plurality of support rods 6 are cross-arranged, and the cross-arranged support rods 6 play a better supporting role.

[0037] Specifically, a plurality of support rods 6 are crossed horizontally and vertically to form a mesh body, and the mesh body can support the filter membrane 5 more evenly and further play a role in supporting the filter membrane 5 .

[0038] In some embodiments, the support portion 3 also includes a connecting ring 7, which is arranged on the annular end surface of the bottom cover 1, and the two ends of the support rod 6 are respectively connected to the connecting ring 7. The connecting ring 7 is a sheet-like body, and the sheet-like end surface of the connecting ring 7 is connected to the annular end surface of the bottom cover 1. In this way, the connection of the support rod 6 can be achieved, and the structural strength of the support rod 6 is ensured.

[0039] In some embodiments, the connecting ring 7 is provided with a flip portion 8 at opposite ends thereof. Figure 3-5 As shown, the axes of the two flipping parts 8 coincide with each other, and the axis passes through the center of the connecting ring 7, so that the connecting ring 7 can be flipped by the flipping part 8 to achieve a folding effect, thereby folding the filter membrane 5, and then collecting the folded filter membrane 5 after sampling is completed.

[0040] To this end, half of the connecting ring 7 can be fixedly connected to the annular end surface of the bottom cover 1, while the other half is not fixedly connected, so that the filter membrane 5 can be folded by bending the half of the connecting ring 7 that is not fixedly connected.

[0041] In some embodiments, as shown in the attached Figure 3 As shown in the figure, the flip part 8 can adopt an articulated axis, and the two articulated axes are connected by a connecting rod 11. Since the support rods 6 adopt a mesh layout, the connecting rod 11 is a central rod body, and the support rods 6 are distributed on both sides of the connecting rod 11. The support rods 6 parallel to the connecting rod 11 are located on both sides of the connecting rod 11, and one end of the support rod 6 perpendicular to the connecting rod 11 is connected to the connecting rod 11, and the other end is connected to the connecting ring 7. This structure can achieve a flippable design of the support part 3 by hingedly connecting the two ends of the connecting rod 11 to the connecting rings 7 on both sides through articulated axes.

[0042] In some embodiments, the flipping portion 8 can also be designed as a crease. For example, the support rod 6 and the connecting ring 7 are a mesh structure integrally formed of plastic material. At this time, the connecting ring 7 of the plastic material and the support rod 6 therebetween can be integrally molded on the flipping portion 8 to form a crease that runs across the entire support portion 3. In this way, the flippable design of the support portion 3 can also be realized.

[0043] In some embodiments, as shown in the attached Figure 5 As shown in the figure, the flip part 8 can be a hinge axis, and the support rod 6 between the two hinge axes can be bent through a crease, and the crease and the hinge axis are located in the same straight line. Specifically, the support rod 6 can be integrally formed with a plastic material, and after molding, the support rod 6 can be molded to form a crease in the transverse direction of the two flip parts 8 by molding. In this way, the flippable design of the support part 3 can also be realized.

[0044] In some embodiments, the combination Fig. 9 , which also includes an outer box bottom 9 and an outer box cover 10, which are threadedly connected to form a receiving cavity between the outer box bottom 9 and the outer box cover 10, and a combination of the bottom cover 1, the top cover 2, the support part 3, the tightening ring 4 and the filter membrane 5 is arranged in the receiving cavity. In this way, the combination of the bottom cover 1, the top cover 2, the support part 3, the tightening ring 4 and the filter membrane 5 is placed through the outer box structure to ensure the cleanliness of the filter membrane 5 before use. The outer box bottom 9 and the outer box cover 10 can be detachably connected by threading.

[0045] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A membrane filter box, characterized in that: The filter membrane comprises a bottom cover, a top cover, a supporting portion, a tightening ring and a filter membrane, wherein the bottom cover and the top cover are both annular in shape, and the bottom cover and the top cover are detachably sleeved, the supporting portion is arranged on one end of the bottom cover facing the top cover, the filter membrane is arranged on one end of the supporting portion away from the bottom cover, the tightening ring is arranged on one end of the filter membrane away from the supporting portion, the tightening ring is abutted against the inner wall of the top cover, the supporting portion comprises a plurality of supporting rods extending to the air holes of the bottom cover, and the filter membrane is arranged on the supporting rods.

2. The filter membrane box according to claim 1, characterized in that: A plurality of support rods are cross-arranged.

3. The filter membrane box according to claim 1, characterized in that: A plurality of support rods are crossed horizontally and vertically to form a mesh body.

4. The filter membrane box according to any one of claims 1 to 3, characterized in that: The support portion further comprises a connecting ring, which is arranged on the annular end surface of the bottom cover, and both ends of the support rod are respectively connected to the connecting ring.

5. The filter membrane box according to claim 4, characterized in that: Flipping parts are arranged at two opposite ends of the connecting ring, the axes of the two flipping parts coincide with each other, and the axes pass through the center of the connecting ring.

6. The filter membrane box according to claim 5, characterized in that: The flip part comprises a hinge shaft, two hinge shafts are connected via a connecting rod, and the support rod is arranged on both sides of the connecting rod or the support rod is connected to the connecting rod.

7. The filter membrane box according to claim 5, characterized in that: The flipping part comprises a hinge shaft, and the support rod between two hinge shafts can be bent through a fold, and the fold and the hinge shaft are located in the same straight line.

8. The filter membrane box according to claim 1, characterized in that: It also includes an outer box bottom and an outer box cover, which are threadedly connected to form a receiving cavity between the outer box bottom and the outer box cover, and a combination of the bottom cover, the top cover, the support part, the clamping ring and the filter membrane is arranged in the receiving cavity.

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