Acrylic acid copolymerized polyvinyl chloride AGR mute drain pipe

Abstract

The utility model relates to the technical field of mute drain pipes, and discloses an acrylic acid copolymerization polyvinyl chloride AGR mute drain pipe. According to the device, a plurality of main connecting plates are fixedly connected to the two sides of the connecting pipeline, an auxiliary connecting plate is arranged at one end of each main connecting plate, a plurality of bolts are arranged on one side of each auxiliary connecting plate, a connecting block is fixedly connected to one end of each auxiliary connecting plate, and a handle is fixedly connected to one side of each connecting block; the end, opposite to the handle, of the connecting block is fixedly connected with a filter screen. Wherein a bolt can penetrate through the auxiliary connecting plate and the main connecting plate to connect the filter screen to one side of the connecting pipeline in a threaded mode. The detachable filter screen can effectively intercept various large-particle impurities such as hair, fibers, food residues, silt and the like. In daily life, the impurities easily flow into a pipeline along with waste water, and if directly entering a drainage pipeline, the impurities are likely to be accumulated at elbows, tee joints and other parts of the pipeline, and the pipeline is gradually blocked.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of silent drainage pipes, in particular to an acrylic copolymer polyvinyl chloride AGR silent drainage pipe. BACKGROUND

[0002] The acrylic copolymer polyvinyl chloride AGR silent drainage pipe is a pipe material with excellent performance. It is made of AGR material and has the characteristics of high strength, high impact resistance, corrosion resistance, flame retardance, etc. It is suitable for various building drainage systems and can replace traditional pipe materials to reduce noise, ensure efficient and stable drainage, and improve the quality of building drainage.

[0003] A silent drainage pipe is disclosed in publication No. CN202194235U. The utility model provides a silent drainage pipe convenient to produce, which comprises an inner pipe, an intermediate pipe and an outer pipe, and the intermediate pipe is made of sound-absorbing and noise-reducing material. The silent drainage pipe is divided into three layers, the inner layer contacts the fluid, the intermediate layer is soundproof, and the outer layer is protective. This not only makes the pipe have soundproof effect, but also makes the pipe have sufficient strength, thereby prolonging the service life. The three-layer pipe is produced by co-extrusion, which is simple in equipment and convenient to operate. The sound-absorbing and noise-reducing material can be produced by sound-absorbing and noise-reducing polypropylene, which is convenient to extrude. The inner pipe and the outer pipe can be made of impact-resistant copolymer polypropylene, which increases the strength of the pipe and enables the polypropylene to withstand high water temperature. The intermediate pipe can also be wave-shaped, which makes the noise repeatedly reflect on the intermediate pipe wall, thereby being repeatedly absorbed and weakened, increasing the noise reduction performance.

[0004] However, the silent drainage pipe in the application often contains hair, fibers, food residues, silt and other sundries in wastewater in daily life and industrial production. Without the interception of the filter screen, these sundries will enter the drainage pipe without any obstruction and gradually accumulate at the positions prone to accumulation, such as the bends, tees and reducers of the pipe. With the passage of time, the sundries accumulate more and more, eventually causing the inner diameter of the pipe to become smaller, the water flow passage to be blocked, the drainage speed to be seriously affected, and even the pipe to be completely blocked. UTILITY MODEL CONTENTS

[0005] The purpose of the present application is to solve the problem of drainage pipe blockage as mentioned above, and to provide an acrylic copolymer polyvinyl chloride AGR silent drainage pipe.

[0006] The technical solution adopted by the present application is as follows: an acrylic copolymer polyvinyl chloride AGR silent drainage pipe, comprising a connecting pipe, a plurality of main connecting plates are fixedly connected on both sides of the connecting pipe, a vice connecting plate is arranged at one end of the main connecting plate, a plurality of bolts are arranged on one side of the vice connecting plate, a connecting block is fixedly connected at one end of the vice connecting plate, a handle is fixedly connected on one side of the connecting block, and a filter screen is fixedly connected at one end of the connecting block opposite to the handle.

[0007] By adopting the above technical scheme, the detachable filter screen structure is added to the acrylic copolymerized polyvinyl chloride (AGR) silent drainage pipe, wherein the bolt can penetrate through the auxiliary connecting plate and the main connecting plate to threadedly connect the filter screen to one side of the connecting pipeline. The detachable filter screen can effectively intercept various large-particle impurities such as hair, fibers, food residues, and silt. In daily life, these impurities are easy to flow into the pipeline with wastewater, and if directly entering the drainage pipeline, they may accumulate at the elbow, tee, and other parts of the pipeline, gradually causing the pipeline to be blocked. The filter screen acts as a barrier to block these impurities outside the pipeline, ensuring that the wastewater can smoothly pass through the pipeline for discharge, greatly reducing the risk of pipeline blockage. Since the filter screen pre-intercepts most of the impurities, the possibility of impurities accumulating in the pipeline is reduced, thereby significantly prolonging the period for which the pipeline needs to be thoroughly dredged and maintained. This means that the occurrence of problems such as poor drainage and backflow of sewage due to pipeline blockage is reduced, saving users a lot of time and cost for pipeline maintenance and cleaning, while also reducing the inconvenience and interference caused by pipeline repair on daily life and work. The filter screen structure is detachable, and when a certain amount of impurities accumulates on the filter screen and needs to be cleaned, users do not need to use complex tools or professional skills, but only need to simply operate to detach the filter screen from the pipeline. After cleaning, it is easily installed back to its original position, and the whole process is convenient and fast, which can be completed by ordinary users without the intervention of professional maintenance personnel, greatly improving the maintenance efficiency.

[0008] In a preferred embodiment, the lower end of the connecting pipeline is fixedly connected with a lower connecting pipe opening, and the upper end of the connecting pipeline is fixedly connected with an upper connecting pipe opening.

[0009] By adopting the above technical scheme, the lower connecting pipe opening and the upper connecting pipe opening are convenient to connect with the pipe body, which ensures the integrity and unity of the overall structure and is an important part of the overall structure. Moreover, the operation is relatively simple, which can effectively improve the installation efficiency of the pipeline system and reduce the construction time and labor cost.

[0010] In a preferred embodiment, the lower end of the lower connecting pipe opening is provided with a pipe body, and the outer surface of the pipe body is provided with a plurality of pipe clamps, and the inner wall of the pipe body is provided with a plurality of pipeline ribs.

[0011] By adopting the technical scheme, the pipe body made of AGR material has high strength and high impact resistance, can withstand certain external pressure and impact force, is not easy to break or damage, and has strong cold impact performance. After being frozen for one hour at-10 DEG C, the pipe body is not broken after being hammered with different specifications and hammer weights. The inner wall of the pipe body is fixedly connected with a plurality of spiral threads, which have the effect of reducing noise and being quiet. In the daily use of the building, the spiral threads can effectively resist the influence of building settlement, vibration, water flow impact and other factors on the pipe, ensuring the long-term stability and reliability of the drainage system. The AGR material itself has certain sound absorption capacity and can absorb part of the sound energy generated by the water flow in the pipe, thereby reducing the propagation of noise. Compared with the traditional drainage pipe material, the molecular structure and physical properties of the AGR material can better attenuate sound waves during sound propagation, reducing sound reflection and transmission. The pipe clamp firmly fixes the pipe body on the structure of the building, ensuring that the pipe body maintains a stable position after installation and does not displace, sway or sag due to gravity, water flow impact or other external forces. The pipe rib can ensure the stability and integrity of the pipe body as a whole and is one of the important components of the overall structure.

[0012] In a preferred embodiment, one end of the lower connecting pipe opening is provided with an L-shaped drainage port through the pipe body, and one end of the upper connecting pipe opening is provided with a pre-buried sleeve through the pipe body.

[0013] By adopting the technical scheme, the L-shaped drainage port can adapt to different directions of drainage demand, and in some special drainage scenes or space-limited areas, the drainage direction can be conveniently adjusted to realize more flexible drainage layout, so that the drainage system can better match the structure of the building and the arrangement of sanitary appliances. When the pipe passes through the floor, wall or other structure of the building, the pre-buried sleeve plays a role in protecting the pipe. It can prevent the pipe from being directly in contact with the structure material such as concrete, avoid wear, extrusion and damage of the pipe caused by structure settlement, vibration or other factors, and ensure the safe operation of the pipe at the structure part.

[0014] In a preferred embodiment, one end of the pre-buried sleeve is provided with a threaded expansion joint through the pipe body.

[0015] By adopting the technical scheme, due to temperature change, building settlement and other reasons, the pipe will produce certain expansion and contraction deformation. The threaded expansion joint can freely expand and contract within a certain range, effectively absorbing the expansion and contraction amount of the pipe, avoiding problems such as breakage, leakage or loose connection of the pipe due to thermal expansion and cold contraction or other factors, and ensuring the normal operation of the drainage system.

[0016] In a preferred embodiment, one end of the threaded expansion joint is provided with a water-following tee through the pipe body.

[0017] By adopting the above technical scheme, when multiple branch pipes are connected to the main pipe in the drainage system, the water flow can be better distributed by the water-following tee, so that the flow of each branch pipe is relatively balanced, avoiding the problem of poor drainage or water accumulation in some branch pipes due to uneven flow distribution, and ensuring the stability and reliability of the entire drainage system.

[0018] In a preferred embodiment, one end of the water-following tee is provided with an H-shaped pipe fitting through the pipe body.

[0019] By adopting the above technical scheme, the H-shaped pipe fitting is often used as an air vent device in the drainage system, which connects the drainage riser and the air riser, and can balance the air pressure in the pipe. When the water flow in the drainage pipe flows rapidly, local negative pressure will be formed, and if there is no air vent device, the negative pressure may cause the water seal to be damaged, allowing odors and harmful gases to enter the indoor. The H-shaped pipe fitting is connected to the air riser, allowing air to enter the drainage pipe, maintaining stable air pressure in the pipe, protecting the water seal, and ensuring the normal operation of the drainage system and indoor air quality.

[0020] In a preferred embodiment, one end of the H-shaped pipe fitting is provided with a riser inspection port through the pipe body.

[0021] By adopting the above technical scheme, the riser inspection port provides a direct channel for pipe maintenance personnel to observe and inspect the internal conditions of the riser. By opening the inspection port, it can be checked whether there are problems such as blockage, accumulation of debris, pipe damage, etc. in the pipe, without the need for large-scale disassembly of the entire pipe system, facilitating the timely discovery and handling of potential faults, and reducing maintenance costs and difficulty.

[0022] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0023] In this application, a detachable filter screen structure is added to the acrylic copolymer PVC AGR silent drainage pipe. The bolt can penetrate the secondary connecting plate and the main connecting plate to threadedly connect the filter screen to one side of the connecting pipe. The detachable filter screen can effectively intercept various large-particle impurities such as hair, fibers, food residues, and silt. In daily life, these impurities can easily flow into the pipe with wastewater. If they directly enter the drainage pipe, they may accumulate at the elbow, tee, and other parts of the pipe, gradually causing pipe blockage. The filter screen acts as a barrier to block these impurities outside the pipe, ensuring smooth discharge of wastewater through the pipe and greatly reducing the risk of pipe blockage. Since the filter screen pre-intercepts most impurities, it reduces the likelihood of impurities accumulating in the pipe, thereby significantly extending the period for large-scale dredging and maintenance of the pipe. This means that the occurrence of problems such as poor drainage and backflow of sewage due to pipe blockage is reduced, saving users a lot of time and cost for pipe maintenance and cleaning, while also reducing the inconvenience and interference caused by pipe repair on daily life and work. The filter screen structure is designed to be detachable. When a certain amount of impurities accumulates on the filter screen and needs to be cleaned, users do not need to use complex tools or professional skills. They can simply detach the filter screen from the pipe. After cleaning, it can be easily installed back in place. The whole process is convenient and fast, and ordinary users can complete it themselves without the intervention of professional maintenance personnel, greatly improving maintenance efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The overall structure in this application is shown in the schematic diagram.

[0025] Figure 2 The enlarged view of A in this application is shown in the schematic diagram. Figure 1

[0026] Figure 3 The connecting pipe structure in this application is shown in the schematic diagram.

[0027] Figure 4 The detachable filter screen structure in this application is shown in the schematic diagram.

[0028] Figure 5 The inner wall structure of the pipe body in this application is shown in the schematic diagram.

[0029] Markings in the figure: 1, connecting pipe; 2, main connecting plate; 3, secondary connecting plate; 4, bolt; 5, connecting block; 6, handle; 7, filter screen; 8, lower connecting pipe opening; 9, upper connecting pipe opening; 10, pipe body; 11, pipe clamp; 12, L-shaped drainage opening; 13, pre-buried sleeve; 14, threaded expansion joint; 15, water-following tee; 16, H-shaped pipe fitting; 17, vertical pipe inspection opening; 18, pipe rib. DETAILED DESCRIPTION

[0030] ​To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0031] With reference to Figures 1-4 , Embodiments

[0032] With reference to Figures 2-3 , a plurality of main connecting plates 2 are fixedly connected to two sides of the connecting pipeline 1, one end of the main connecting plate 2 is provided with a secondary connecting plate 3, one side of the secondary connecting plate 3 is provided with a plurality of bolts 4, one end of the secondary connecting plate 3 is fixedly connected with a connecting block 5, one side of the connecting block 5 is fixedly connected with a handle 6, and one end of the connecting block 5 opposite to the handle 6 is fixedly connected with a filter screen 7. The detachable filter screen structure is added to the acrylic copolymer polyvinyl chloride (AGR) silent drainage pipe, wherein the bolts 4 can penetrate the secondary connecting plate 3 and the main connecting plate 2 to threadedly connect the filter screen 7 to one side of the connecting pipeline 1. The detachable filter screen can effectively intercept various large-particle impurities such as hair, fibers, food residues, and silt. In daily life, these impurities are easy to flow into the pipeline with wastewater, and if they directly enter the drainage pipeline, they may accumulate at the elbow, tee, and other parts of the pipeline, gradually causing the pipeline to be blocked. The filter screen acts as a barrier to block these impurities outside the pipeline, ensuring that wastewater can flow smoothly through the pipeline, greatly reducing the risk of pipeline blockage. Since the filter screen pre-intercepts most of the impurities, the possibility of impurities accumulating in the pipeline is reduced, thereby significantly prolonging the period for which the pipeline needs to be thoroughly dredged and maintained. This means that the occurrence of problems such as poor drainage and backflow of sewage due to pipeline blockage is reduced, saving users a lot of time and cost for pipeline maintenance and cleaning, while also reducing the inconvenience and interference caused by pipeline repair on daily life and work. The filter screen structure is designed to be detachable, so when the filter screen accumulates a certain amount of impurities and needs to be cleaned, users do not need to use complex tools or professional skills, but only need to simply operate to detach the filter screen from the pipeline. After cleaning, it is easily installed back into place, the whole process is convenient and fast, and ordinary users can complete it themselves without the intervention of professional maintenance personnel, greatly improving the maintenance efficiency.

[0033] With reference to Figure 3The lower end of the connecting pipe 1 is fixedly connected with a lower connecting pipe opening 8, and the upper end of the connecting pipe 1 is fixedly connected with an upper connecting pipe opening 9. The lower connecting pipe opening 8 and the upper connecting pipe opening 9 are convenient for being connected with the pipe body 10, which guarantees the integrity and unity of the overall structure and is an important component in the overall structure. Moreover, the operation is relatively simple, which can effectively improve the installation efficiency of the pipeline system and reduce the construction time and labor cost.

[0034] With reference to Figures 2-3 The lower end of the lower connecting pipe opening 8 is also provided with the pipe body 10. The outer side surface of the pipe body 10 is provided with a plurality of pipe clamps 11, and the inner wall of the pipe body 10 is provided with a plurality of pipeline ribs 18. The pipe body 10 made of AGR material has high strength and high impact resistance and can withstand certain external pressure and impact force and is not easy to break or damage. Moreover, the pipe body 10 has strong cold impact performance. After being frozen for one hour in an environment of-10℃, the pipe body 10 is not broken after being hammered with different specifications and hammer weights. In the daily use of buildings, the pipe body 10 can effectively resist the influence of factors such as building settlement, vibration and water flow impact on the pipeline, thereby guaranteeing the long-term stability and reliability of the drainage system. The inner wall of the pipe body 10 is fixedly connected with a plurality of spiral threads, which have the function of reducing noise and being quiet. Moreover, the AGR material itself has a certain sound absorption capacity and can absorb part of the sound energy generated when the water flows in the pipeline, thereby reducing the propagation of noise. Compared with traditional drainage pipe materials, the molecular structure and physical properties of the AGR material can better attenuate sound waves in the process of sound propagation, thereby reducing sound reflection and transmission. The pipe clamps 11 firmly fix the pipe body 10 on the structure of the building, thereby ensuring that the pipe body 10 maintains a stable position after installation and will not be displaced, shaken or sagged due to gravity, water flow impact or other external forces. The pipeline ribs 18 can guarantee the stability and integrity of the pipe body 10 and are one of the important components in the overall structure.

[0035] With reference to Figure 1 One end of the lower connecting pipe opening 8 is provided with an L-shaped drainage opening 12 through the pipe body 10, and one end of the upper connecting pipe opening 9 is provided with a pre-buried sleeve 13 through the pipe body 10. The L-shaped drainage opening 12 can adapt to different directions of drainage demand. In some special drainage scenes or space-limited areas, the drainage direction can be conveniently adjusted to realize more flexible drainage layout, so that the drainage system can better match the structure of the building and the arrangement of sanitary appliances. When the pipeline penetrates through the floor, wall or other structures of the building, the pre-buried sleeve 13 plays a role in protecting the pipeline. It can prevent the pipeline from being directly in contact with structural materials such as concrete, thereby avoiding abrasion, extrusion and damage to the pipeline due to structural settlement, vibration or other factors, and ensuring the safe operation of the pipeline at the structure penetration part.

[0036] With reference to Figure 1One end of the embedded sleeve 13 is provided with a threaded expansion joint 14 through the pipe body 10. Due to temperature changes, building settlement and other reasons, the pipeline will produce certain expansion deformation. The threaded expansion joint 14 can freely expand within a certain range, effectively absorbing the expansion amount of the pipeline, avoiding the problems of rupture, leakage or loose connection caused by the stress of thermal expansion and contraction or other factors, and ensuring the normal operation of the drainage system.

[0037] With reference to Figure 1 One end of the threaded expansion joint 14 is provided with a water-following tee 15 through the pipe body 10. In the drainage system, when there are multiple branch pipes connected to the main pipe, the water-following tee 15 can better distribute the water flow, making the flow of each branch pipe relatively balanced, avoiding the problem of poor drainage or water accumulation in some branch pipes due to uneven flow distribution, and ensuring the stability and reliability of the entire drainage system.

[0038] With reference to Figure 1 One end of the water-following tee 15 is provided with an H-shaped pipe fitting 16 through the pipe body 10. The H-shaped pipe fitting 16 is often used as an air vent device in the drainage system, which connects the drainage vertical pipe and the air vertical pipe, and can balance the air pressure in the pipeline. When the water flow in the drainage pipeline flows rapidly, local negative pressure will be formed, and if there is no air vent device, the negative pressure may cause the water seal to be damaged, allowing odors and harmful gases to enter the indoor. The H-shaped pipe fitting 16 is connected to the air vertical pipe, allowing air to enter the drainage pipeline, maintaining stable air pressure in the pipeline, protecting the water seal, and ensuring the normal operation of the drainage system and indoor air quality.

[0039] With reference to Figure 1 One end of the H-shaped pipe fitting 16 is provided with a vertical pipe inspection port 17 through the pipe body 10. The vertical pipe inspection port 17 provides a direct channel for pipeline maintenance personnel to observe and inspect the internal conditions of the vertical pipe. By opening the inspection port, it can be seen whether there are blockages, debris accumulation, pipeline damage and other problems in the pipeline, without the need for large-scale disassembly of the entire pipeline system, facilitating the timely discovery and handling of potential faults, reducing maintenance costs and difficulty.

[0040] The implementation principle of the acrylic copolymer polyvinyl chloride (AGR) silent drainage pipe embodiment of the present application is:

[0041] The detachable filter screen structure is added to the acrylic copolymer PVC AGR silent drain pipe, wherein the bolt 4 can penetrate the auxiliary connecting plate 3 and the main connecting plate 2 to threadedly connect the filter screen 7 to one side of the connecting pipe 1. The detachable filter screen can effectively intercept various large-particle impurities such as hair, fibers, food residues, and silt. In daily life, these impurities are easy to flow into the pipe with wastewater, and if they directly enter the drain pipe, they may accumulate at the elbow, tee, and other parts of the pipe, gradually causing pipe blockage. The filter screen acts as a barrier to block these impurities outside the pipe, ensuring that wastewater can flow smoothly through the pipe, greatly reducing the risk of pipe blockage. Since the filter screen pre-intercepts most impurities, it reduces the possibility of impurities accumulating in the pipe, thereby significantly extending the period for large-scale dredging and maintenance of the pipe. This means that the occurrence of problems such as poor drainage and sewage backflow caused by pipe blockage is reduced, saving users a lot of time and cost for pipe maintenance and cleaning, and also reducing the inconvenience and interference caused by pipe repair on daily life and work. The filter screen structure is designed to be detachable, so when a certain amount of impurities accumulates on the filter screen and needs to be cleaned, users do not need to use complex tools or professional skills, but only need to simply operate to detach the filter screen from the pipe. After cleaning, it is easily installed back to its original position, the whole process is convenient and fast, and ordinary users can complete it themselves without the intervention of professional maintenance personnel, greatly improving the maintenance efficiency.

[0042] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. Acrylic acid copolymer polyvinyl chloride AGR silent drain pipe, including a connecting pipe (1), characterized in that: A plurality of main connecting plates (2) are fixedly connected to both sides of the connecting pipe (1), a secondary connecting plate (3) is provided at one end of the main connecting plate (2), a plurality of bolts (4) are provided on one side of the secondary connecting plate (3), a connecting block (5) is fixedly connected to one end of the secondary connecting plate (3), a handle (6) is fixedly connected to one side of the connecting block (5), and a filter screen (7) is fixedly connected to one end of the connecting block (5) opposite to the handle (6).

2. The acrylic acid copolymer polyvinyl chloride AGR silent drain pipe according to claim 1, characterized in that: The lower end of the connecting pipe (1) is fixedly connected to a lower connecting pipe opening (8), and the upper end of the connecting pipe (1) is fixedly connected to an upper connecting pipe opening (9).

3. The acrylic acid copolymer polyvinyl chloride AGR silent drain pipe according to claim 2, characterized in that: A tube body (10) is also provided at the lower end of the lower connecting pipe opening (8), a plurality of tube clamps (11) are provided on the outer surface of the tube body (10), and a plurality of pipeline ribs (18) are provided on the inner wall of the tube body (10).

4. The acrylic acid copolymer polyvinyl chloride AGR silent drain pipe according to claim 3, characterized in that: One end of the lower connecting pipe opening (8) is provided with an L-shaped drain outlet (12) through the pipe body (10), and one end of the upper connecting pipe opening (9) is provided with a pre-buried sleeve (13) through the pipe body (10).

5. The acrylic acid copolymer polyvinyl chloride AGR silent drain pipe according to claim 4, characterized in that: One end of the embedded sleeve (13) is provided with a threaded expansion joint (14) through the pipe body (10).

6. The acrylic acid copolymer polyvinyl chloride AGR silent drain pipe according to claim 5, characterized in that: One end of the threaded expansion joint (14) is provided with a water-conducting tee (15) through the pipe body (10).

7. The acrylic acid copolymer polyvinyl chloride AGR silent drain pipe according to claim 6, characterized in that: One end of the water-following tee (15) is provided with an H-shaped pipe fitting (16) through the pipe body (10).

8. The acrylic acid copolymer polyvinyl chloride AGR silent drain pipe according to claim 7, characterized in that: One end of the H-shaped pipe fitting (16) is provided with a riser inspection port (17) through the pipe body (10).

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