Packing unit, packing assembly, and manufacturing method of packing unit

Abstract

The present invention provides a packing unit and a packing assembly, which relate to the field of biological treatment of sewage, and include a packing body, wherein the packing body has a support portion and a plurality of protrusions, each protrusion protruding from the support portion, and the plurality of protrusions are distributed along the length direction of the support portion, and the protrusion has a first surface and a second surface, both of which extend in a direction away from the support portion, the first surface is flat or serrated, and the second surface is flat or serrated. A method for making a packing unit is also provided, wherein a packing plate having the same thickness as the desired packing body is obtained, a cutting line for each packing body is set, and the cutting lines corresponding to two adjacent packing bodies are interlocked with each other, and the cutting line portions corresponding to the multiple protrusions of each packing body at least partially extend into the grooves of the cutting lines of the adjacent packing bodies, and a packing unit can be obtained by cutting the packing plate along each cutting line. The present invention improves the effect and efficiency of sewage treatment.

Description

Technical Field

[0001] The present invention relates to the field of biological sewage treatment, and in particular to a packing unit, a packing assembly and a method for manufacturing the packing unit. Background Art

[0002] Anaerobic ammonium oxidation technology is currently the most advanced biological denitrification technology in the world. Integrated biofilm anaerobic ammonium oxidation technology has the advantages of good stability and good impact resistance. It has great prospects for promotion and application, and has a very good treatment effect on difficult-to-degrade substances and toxic substances in wastewater, especially wastewater containing high concentrations of ammonia nitrogen. Packing units and packing assemblies are often used in anaerobic ammonium oxidation devices to enrich and cultivate anaerobic ammonium oxidizing bacteria. The current packing bodies are mostly regular shapes, such as polyhedrons or spheres, with a small contact area with sewage, difficulty in enriching bacteria, and poor sewage treatment effects. The current packing assembly consists of a spherical shell with holes and multiple packing bodies. The multiple packing bodies are arranged inside the spherical shell, and gaps are left between the multiple packing bodies. The volume of the packing body increases with the enrichment of anaerobic ammonia-oxidizing bacteria, and the gaps between multiple packing bodies disappear, so that the multiple packing bodies form a "whole". Most of the outer walls of the packing body are tightly attached to the outer walls of other adjacent packing bodies, making it impossible to further enrich anaerobic ammonia-oxidizing bacteria, and hindering the shedding of dead anaerobic ammonia-oxidizing bacteria, resulting in a small contact area between the packing unit and the sewage, and easy clogging, resulting in poor sewage treatment effect. Summary of the Invention

[0003] The purpose of the present invention is to provide a packing unit, a packing assembly and a method for manufacturing the packing unit to solve the problems existing in the above-mentioned prior art, with a larger effective area and improved sewage treatment effect and efficiency.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a packing unit, including a packing body, the packing body having a supporting portion and multiple protrusions, each of the protrusions protruding from the supporting portion, and multiple protrusions distributed along the length direction of the supporting portion, the protrusion having a first surface and a second surface, the first surface and the second surface both extending in a direction away from the supporting portion, the first surface being flat or serrated, and the second surface being flat or serrated.

[0006] Preferably, a plurality of the protrusions are arranged on both sides of the support portion, and the protrusions on both sides of the support portion are symmetrically distributed about a center line parallel to the length direction of the support portion, and a groove is formed between two adjacent protrusions, and the groove has the same shape as the protrusion.

[0007] Preferably, the first surface and the second surface of each of the outer protrusions are connected via a first arc surface, and the second surface of each of the outer protrusions is connected to adjacent first surfaces via a second arc surface.

[0008] Preferably, the filler body is made of porous material.

[0009] The present invention also provides a packing assembly, comprising at least one packing group body, each of the packing group bodies comprising a first connecting component and at least two of the above-mentioned packing units, each of the packing bodies being an elastic packing plate, the first connecting component being capable of passing through the supporting parts of a plurality of the packing bodies in sequence and being capable of deforming at least a portion of the packing body by pressing each of the supporting parts until the two outer protrusions symmetrically arranged along the center line of the support part form a first angle.

[0010] Preferably, the packing group body also includes at least two second connecting parts, and the packing bodies arranged at both ends of the packing group body in the thickness direction are fixedly connected to a second connecting part. The packing group body also includes at least two second connecting parts, and the packing bodies arranged at both ends of the packing group body in the thickness direction are fixedly connected to a second connecting part. Multiple second connecting parts and multiple packing bodies are fixedly connected through the first connecting part.

[0011] Preferably, there are three filler bodies and two second connecting parts. The three filler bodies are respectively a first filler body, a second filler body and a third filler body. The first filler body and the second filler body are respectively fixedly connected to the two second connecting parts. The first filler body and the second filler body are arranged on both sides of the third filler body. Each second connecting part is arranged along the length direction of each support part. The first connecting part passes through the second connecting part, the first filler body, the third filler body, the second filler body and the second connecting part in sequence and fixes the second connecting part, the first filler body, the third filler body, the second filler body and the second connecting part. Each of the outer protrusions extends in the direction of the support part away from the third filler body.

[0012] Preferably, there are multiple filler group bodies, and the multiple filler group bodies are connected by the second connecting component, each second connecting component is a flexible connecting component, the first connecting component is a sewing thread, the material of the filler unit is polyurethane, and the first angle is 45°-90°.

[0013] Preferably, there are multiple packing group bodies, and the multiple packing group bodies are connected by the second connecting component.

[0014] The present invention also provides a method for manufacturing a packing unit, wherein the two surfaces of each of the outer protrusions perpendicular to the thickness direction of the packing body are respectively a first front surface and a first rear surface, and the two surfaces of each of the support portions perpendicular to the thickness direction of the packing body are respectively a second front surface and a second rear surface, the first front surface of all the outer protrusions of each packing body is coplanar with the second front surface of the support portion, and the first rear surface of all the outer protrusions of each packing body is coplanar with the second rear surface of the support portion, and each of the outer protrusions of one packing body is capable of at least partially extending into each of the grooves of another packing body;

[0015] A packing plate with the same thickness as the required packing body is obtained, a cutting line is set for each packing body, and the cutting lines corresponding to two adjacent packing bodies are interlocked with each other, and the cutting line portions corresponding to the multiple protrusions of each packing body at least partially extend into the grooves of the cutting lines of the adjacent packing bodies. A packing unit can be obtained by cutting the packing plate along each cutting line, and a cutting line groove is formed between the cutting line portions corresponding to the two adjacent protrusions.

[0016] Preferably, the cutting line portions corresponding to the multiple protrusions of each filler body all extend into the grooves of the multiple cutting lines of each adjacent filler body, and the cutting line portions corresponding to the multiple protrusions of each filler body match the grooves of the multiple cutting lines of each filler body.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The packing unit, packing assembly and packing unit manufacturing method provided by the present invention are provided with multiple external protrusions, and the first surface and second surface of each external protrusion are flat or serrated, which can provide a large number of biofilm formation positions for the enrichment and cultivation of bacteria, while increasing the contact area between the packing unit and the sewage, thereby improving the sewage treatment effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the structure of the packing unit in Example 1;

[0021] Figure 2Schematic diagram of the structure (diagram of dimensions) of the packing unit in Example 1;

[0022] Figure 3 Schematic diagram of the structure of the packing assembly in Example 2 (single packing group body);

[0023] Figure 4 This is a schematic diagram of the processing process of the filler assembly in Example 2;

[0024] Figure 5 Schematic diagram (cross section) of the packing assembly in Example 2;

[0025] Figure 6 Schematic diagram of the structure of the packing assembly in Example 2 (multiple packing group bodies);

[0026] Figure 7 Schematic diagram of the structure of the packing assembly in Example 2 (diagram of the dimensions of multiple packing group bodies);

[0027] Figure 8 This is a schematic diagram of the installation of the packing assembly in Example 2;

[0028] Figure 9 This is a schematic diagram of the interlocking of multiple filler units in Example 3;

[0029] Figure 10 Schematic diagram of the structure of multiple packing units after cutting in Example 3 (the multiple packing units are not separated);

[0030] Figure 11 Schematic diagram of the structure of multiple packing units after cutting in Example 3 (after the multiple packing units are separated);

[0031] In the figure: 100, filler unit; 200, filler assembly; 1, filler body; 101, first filler body; 102, second filler body; 103, third filler body; 2, support portion; 201, second front surface; 202, second rear surface; 3, convex portion; 301, first surface; 302, second surface; 303, first front surface; 304, first rear surface; 4, groove; 5, first arc surface; 6, second arc surface; 7, filler group body; 8, second connecting component; 9, first connecting component; 10, filler plate; a, first angle. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The purpose of the present invention is to provide a packing unit, a packing assembly and a method for manufacturing the packing unit to solve the problems existing in the above-mentioned prior art, with a larger effective area and improved sewage treatment effect and efficiency.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1

[0036] like Figure 1-2 As shown, this embodiment provides a packing unit 100, including a packing body 1, the packing body 1 having a support portion 2 and a plurality of convex portions 3, each convex portion 3 protruding from the support portion 2, and the plurality of convex portions 3 are distributed along the length direction of the support portion 2, the convex portion 3 having a first surface 301 and a second surface 302, the first surface 301 and the second surface 302 both extending in a direction away from the support portion 2, the first surface 301 being flat or serrated, and the second surface 302 being flat or serrated. It should be noted that serration is a general term for concave and convex shapes, that is, the first surface 301 and the second surface 302 both have a plurality of convex surfaces and a plurality of concave surfaces, and the plurality of convex surfaces and the plurality of concave surfaces are alternately arranged to form a serration. The shapes of the convex surfaces and the concave surfaces are not limited and can be various shapes, such as the projections of the first surface 301 and the second surface 302 in the direction perpendicular to the thickness of the packing body 1 can be wavy lines, serrated lines, and other shapes. Preferably, the filler unit 100 is provided with a plurality of convex portions 3, and the first surface 301 and the second surface 302 of each convex portion 3 are both the above-mentioned concave-convex shape, which can provide a large number of biofilm formation positions for the enrichment and cultivation of bacteria, while increasing the contact area between the filler unit 100 and the sewage, thereby improving the sewage treatment effect and efficiency.

[0037] A plurality of protrusions 3 are provided on both sides of the support portion 2, and the protrusions 3 on both sides of the support portion 2 are symmetrically distributed about a center line parallel to the length direction of the support portion 2. A groove 4 is formed between two adjacent protrusions 3, and the groove 4 has the same shape as the protrusion 3. That is, each protrusion 3 of each packing unit 100 can be embedded in each groove 4 of two adjacent packing units 100, and the serrations of each protrusion 3 of each packing unit 100 can be interlocked with the serrations of each groove 4 of two adjacent packing units 100. When designing the cutting line, a cutting model can be drawn in advance. The state of the cutting model is that the multiple packing units 100 are interlocked with each other, and each packing unit 100 is completely interlocked with the two adjacent packing units 100, that is, all the protrusions 3 on both sides of the support portion 2 of each packing unit 100 are completely extended into the multiple grooves 4 of the two adjacent packing units 100. The multiple packing bodies 1 after interlocking form a packing whole, and the line formed by the outer contour line of the packing whole and the intersection line of the two adjacent packing bodies 1 is used as the cutting line. During processing, a packing plate 10 having the same thickness as the packing unit 100 is cut along the aforementioned cutting lines to produce a plurality of interlocking packing units 100. Processing is then completed by simply separating the interlocking packing units 100. This simplifies the processing process, improves production efficiency, and helps save materials and avoids waste.

[0038] The first surface 301 and the second surface 302 of each outer protrusion 3 are connected by a first curved surface 5, and the second surface 302 of each outer protrusion 3 is connected to each adjacent first surface 301 by a second curved surface 6. The first curved surface 5 and the second curved surface 6 have the same shape and are preferably circular. The curved surface design not only increases the contact area with the sewage, but also facilitates separation of multiple interlocking packing units 100 that are processed at one time.

[0039] The filler body 1 is made of a porous material, preferably a porous flexible material, and is used for enriching and culturing bacteria. Preferably, the filler body 1 is made of a polyurethane porous polymer flexible material.

[0040] The dimensions of the components of the packing unit 100 are as follows:

[0041] The total length L0 of the packing unit 100 is 500-2500 mm;

[0042] The total width L4 of the packing unit 100 is 80-150 mm;

[0043] The thickness of the packing unit 100 is 5-20 mm;

[0044] Width L1 of support portion 2 = 20-50 mm;

[0045] The maximum width L6 of the outer protrusion 3 is 10-30 mm;

[0046] The length L3 of the outer protrusion 3 protruding from the support portion 2 is 30-70 mm;

[0047] The distance between two adjacent protrusions 3 is L5 = 20-60 mm;

[0048] The radius R1 of the outer protrusion 3 away from the surface of the support part 2 is 5-15 mm;

[0049] The radius R2 of the surface of the groove 4 close to the support part 2 is 5-15 mm;

[0050] The distance between two adjacent saw teeth is L2 = 2-8 mm.

[0051] Example 2

[0052] like Figure 3-8 As shown, this embodiment provides a packing assembly 200 comprising at least one packing group body 7, each packing group body 7 including a first connecting member 9 and at least two packing units 100 according to Example 1. Each packing body 1 is an elastic packing plate. The first connecting member 9 can sequentially pass through the support portions 2 of multiple packing bodies 1 and, by compressing each support portion 2, deform at least a portion of the packing body 1 until two protrusions 3, symmetrically arranged along the centerline of the support portion 2, form a first angle a. Multiple packing bodies 1 can be stacked together. The length of the first connecting member 9 extending through the interior of these packing bodies 1 is less than the sum of their thicknesses, thereby squeezing these packing bodies 1 in the thickness direction. Because the packing units 1 are flexible structures, they deform under the action of the squeezing force, causing each protrusion 3 to tilt away from adjacent packing bodies 1, thereby achieving a bent and fixed arrangement of the multiple packing bodies 1. This significantly increases the contact area between the packing assembly 200 and the sewage, facilitates the shedding of dead anaerobic ammonia-oxidizing bacteria, effectively reduces or prevents clogging, and improves treatment efficiency and effectiveness.

[0053] The packing assembly body 7 also includes at least two second connecting members 8. Each packing body 1 disposed at both ends of the packing assembly body 7 in the thickness direction is fixedly connected to a second connecting member 8. Multiple second connecting members 8 and multiple packing bodies 1 are fixedly connected via first connecting members 9. The second connecting members 8 can increase the strength of the packing body 1, preventing the packing body from breaking or being damaged during processing or use.

[0054] As a preferred embodiment, there are three packing bodies 1 and two second connecting components 8. The three packing bodies 1 are respectively a first packing body 101, a second packing body 102, and a third packing body 103. The first packing body 101 and the second packing body 102 are fixedly connected to two second connecting components 8, respectively. The first packing body 101 and the second packing body 102 are arranged on either side of the third packing body 103. Each second connecting component 8 is arranged along the length of each support portion 2. The first connecting component 9 sequentially passes through the second connecting component 8, the first packing body 101, the third packing body 102, the second packing body 103, and the second connecting components 8, and fixedly connects the second connecting components 8, the first packing body 101, the third packing body 102, the second packing body 103, and the second connecting components 8. Each outer protrusion 3 extends in a direction away from the support portion 2 of the third packing body 103. By assembling the three layers of packing bodies 1, the outer protrusions 3 of the three packing bodies 1 do not contact each other, which facilitates sufficient contact between the packing group body 7 and water, thereby achieving efficient sewage treatment. Preferably, the second connecting component 8 has a certain width, which is smaller than the width of the support part. The second connecting component 8 extends from one end of the support part 2 in the length direction to the other end of the support part 2 in the length direction, and is fully fitted and well fixed to the support part 2, thereby improving the strength of the connection parts between the multiple filler bodies 1.

[0055] Each second connecting component 8 is a flexible connecting component, preferably a braided belt, and the first connecting component 9 is a sewing thread. The braided belt and sewing thread are relatively low in cost, which greatly reduces the processing cost; at the same time, the processing technology is simple. The material of the packing unit 100 is polyurethane, and the first angle a is 45°-90°. When assembled by three layers of packing bodies 1, the first angle a is 45°-60°, preferably 60°, and the angle between the protrusions 3 on both sides of the support part 2 of the first packing body 101 and the third packing body 103 is 60°, and the angle between the protrusions 3 on both sides of the support part 2 of the second packing body 102 and the third packing body 103 is 60°, so that the distribution of the packing body 1 is more uniform, further improving the sewage treatment effect. It should be noted that the packing assembly 200 can also be assembled from other layers of packing bodies 1, such as two or four layers, wherein, when assembled by two layers of packing bodies 1, the first angle a is preferably 90°; when assembled by four layers of packing bodies 1, the first angle a is preferably 45°. The braided belt is preferably made of a high-strength, corrosion-resistant flexible polymer material that can be bent arbitrarily, such as polyamide, polyester, polypropylene, polyethylene, etc.; it can withstand external force pulling and sewage corrosion in the reactor, and will not break due to corrosion, nor will it break due to external forces such as aeration and other pulling forces.

[0056] There are multiple packing group bodies 7, and the multiple packing group bodies 7 are connected by a second connecting component 8. Preferably, the second connecting component 8 is made of two whole braided belts with a certain length, and the two braided belts respectively bend the outer protrusion 3 of the first packing body 101 and the outer protrusion 3 of the second packing body 102 to a first angle a, and the two braided belts connect the multiple packing group bodies 7 into a whole. Preferably, a certain spacing is reserved between two adjacent packing group bodies 7, and multiple spacing sizes are the same, forming a string of packing group bodies 7. Preferably, the length of the braided belt is 3m-100m, the number of packing group bodies 7 is 1-100, the length of the packing group body 7 is determined by the packing unit 100, which is 500-2500mm, and the spacing between two adjacent packing group bodies 7 is 200-500mm.

[0057] When used, the packing assembly 200 can be wound around multiple supporting circular tubes in a serpentine shape through a braided belt. In this case, the total length of the packing assembly 200 is calculated as follows:

[0058] Lq=Li+n×Lo+(n-1)Lz+Lj;

[0059] Lz=La+Lc×2+Ly×2;

[0060] Lc=πD / 4;

[0061] Wherein, Lq is the total length of the packing assembly 200;

[0062] Lo—the length of the packing unit 100;

[0063] Li—the length of the braided belt reserved at the head end of the packing assembly 200;

[0064] Lj—the length of the braided tape reserved at the end of the packing assembly 200;

[0065] n—the number of packing group bodies 7;

[0066] Lz—the distance between the packing group bodies 7 and the packing group bodies 7;

[0067] Lα—the horizontal center distance between two adjacent supporting circular tubes;

[0068] Lc—1 / 4 arc length of supporting circular tube;

[0069] Ly—the reserved distance from the packing unit 100 to the center of the supporting circular tube;

[0070] D—diameter of the supporting tube;

[0071] π—the coefficient of pi, usually 3.14.

[0072] The method for making the packing assembly 200 is as follows:

[0073] The first filler body 101, the second filler body 102 and the third filler body 103 are placed together in an overlapping manner, a braided belt is placed on the upper surface of the first filler body 101 at the middle position along the length direction of the first filler body 101, and a braided belt is placed on the lower surface of the second filler body 102 at the middle position along the length direction of the second filler body 102, and the pressure strip of the sewing machine acts on the upper surface of the support part 2 of the first filler body 101 and the lower surface of the support part 2 of the second filler body 102, and provides a pressure directed to the third filler for the first filler body 101 and the second filler body 102 respectively. The outer protrusions 3 on both sides of the first filler body 101 and the outer protrusions 3 of the second filler body 102 are bent away from the third filler body 103 under the action of pressure; then the braided belt is sewed to the upper surfaces of the two outer protrusions 3 symmetrically arranged along the center line of the length direction of the support part 2 by using a sewing machine, and the support parts 2 of the first filler body 101, the second filler body 102 and the third filler body 103 are sewed tightly by sewing thread. During sewing, the sewing machine sews the support portion 2 of the first filler body 101 and the support portion 2 of the second filler body 102 together along the length direction of the first filler body 101; after sewing the first filler component 200, continue to use the same two braided belts to sew the subsequent multiple filler components 200, that is, while completing the individual assembly of multiple filler components 200, the series connection of multiple filler components 200 is also achieved at the same time.

[0074] Example 3

[0075] like Figure 9-11 As shown, this embodiment provides a method for manufacturing a packing unit 100, wherein the two surfaces of each outer protrusion 3 perpendicular to the thickness direction of the packing body 1 are respectively a first front surface 303 and a first rear surface 304, and the two surfaces of each support portion 2 perpendicular to the thickness direction of the packing body 1 are respectively a second front surface 201 and a second rear surface 202. The first front surface 303 of all outer protrusions 3 of each packing body 1 is coplanar with the second front surface 201 of the support portion 2, and the first rear surface 304 of all outer protrusions 3 of each packing body 1 is coplanar with the second rear surface 202 of the support portion 2. That is, the packing body 1 is plate-shaped, and each outer protrusion 3 of one packing body 1 can at least partially extend into each groove of another packing body 1.

[0076] A packing plate 10 having the same thickness as the required packing body 1 is obtained, a cutting line of each packing body 1 is set, and the cutting lines corresponding to two adjacent packing bodies 1 are interlocked with each other, and the cutting line portions corresponding to the multiple protrusions 3 of each packing body 1 are at least partially extended into the grooves of the cutting lines of the adjacent packing bodies 1. A packing unit 100 can be obtained by cutting the packing plate 10 along each cutting line, and a cutting line groove is formed between the cutting line portions corresponding to the two adjacent protrusions 3.

[0077] The manufacturing method of the filler unit 100 provided in this embodiment can utilize the material at the position corresponding to the groove 4, thereby improving the utilization rate of the material and saving the material.

[0078] As a preferred embodiment, the cutting line portions corresponding to the multiple protrusions 3 of each filler body 1 all extend into the grooves of the multiple cutting lines of each adjacent filler body 1, and the cutting line portions corresponding to the multiple protrusions 3 of each filler body 1 match the grooves of the multiple cutting lines of each filler body 1. That is, the cutting line portions corresponding to the multiple protrusions 3 of each filler body 1 are exactly the same in shape as the grooves of the multiple cutting lines of each filler body 1. After interlocking, the corresponding edges of the two adjacent cutting lines in the width direction are collinear. A single cut along the intersection of the two adjacent cutting lines can achieve the cutting and shaping of the outer contours of the corresponding positions of the two adjacent filler bodies 1. During processing, a filler plate 10 with the same thickness as the filler unit 100 is cut according to the above-mentioned cutting lines to process multiple mutually interlocking filler units 100. The processing can be completed by simply separating the multiple interlocking filler units 100. The processing process is simple, which improves production efficiency. No material waste is generated between two adjacent filler units 100, which maximizes material savings.

[0079] As a preferred embodiment, the method for manufacturing the packing unit 100 further includes:

[0080] S1. Foaming a porous flexible material into a flexible block, which is generally formed into a rectangular parallelepiped shape, and cutting the flexible block into thin plates of a certain thickness according to the thickness of the filler unit 100;

[0081] S2. Cut the thin plate into a plurality of mutually interlocking filler units 100 along a preset cutting line, and separate the plurality of mutually interlocking filler units 100.

[0082] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A packing assembly, characterized in that: The invention comprises at least one packing group body, each packing group body comprising a first connecting component and at least two packing units, the packing unit comprising a packing body, the packing body comprising a support portion and a plurality of protrusions, each of the protrusions protruding from the support portion, a plurality of the protrusions being arranged on both sides of the support portion, and the protrusions on both sides of the support portion being symmetrically distributed about a center line parallel to a length direction of the support portion, and a plurality of the protrusions being distributed along the length direction of the support portion, the protrusions having a first surface and a second surface, both of the first surface and the second surface extending in a direction away from the support portion, the first surface being flat or serrated, and the second surface being flat or serrated; Each of the packing bodies is an elastic packing plate, and a plurality of the packing bodies are stacked together. The first connecting member can sequentially pass through the supporting portions of the plurality of packing bodies and can, by pressing each supporting portion, deform at least a portion of the packing body until two convex portions symmetrically arranged along a center line of the supporting portion form a first angle. The filler body is made of porous material.

2. The packing assembly according to claim 1, characterized in that: A groove is formed between two adjacent outer protrusions, and the groove has the same shape as the outer protrusion.

3. The packing assembly according to claim 2, characterized in that: The first surface and the second surface located on adjacent outer convex parts are connected by a first arc surface, and the first surface and the second surface located on the same outer convex part are connected by a second arc surface.

4. The packing assembly according to claim 1, characterized in that: The packing group body also includes at least two second connecting components. The packing bodies arranged at both ends of the packing group body in the thickness direction are fixedly connected to a second connecting component. Multiple second connecting components and multiple packing bodies are fixedly connected through the first connecting component.

5. The packing assembly according to claim 4, characterized in that: There are three filler bodies and two second connecting parts. The three filler bodies are the first filler body, the second filler body and the third filler body. The first filler body and the second filler body are fixedly connected to the two second connecting parts respectively. The first filler body and the second filler body are arranged on both sides of the third filler body. Each second connecting part is arranged along the length direction of each support part. The first connecting part passes through the second connecting part, the first filler body, the third filler body, the second filler body and the second connecting part in sequence and fixedly connects the second connecting part, the first filler body, the third filler body, the second filler body and the second connecting part. Each of the outer protrusions extends in the direction of the support part away from the third filler body.

6. The packing assembly according to claim 4, characterized in that: There are multiple filler group bodies, and the multiple filler group bodies are connected by the second connecting component. Each second connecting component is a flexible connecting component. The first connecting component is a sewing thread. The material of the filler unit is polyurethane, and the first angle is 45°-90°.

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