Waterproof drainage device for hydraulic engineering construction
By designing a waterproof and drainage device for construction of water conservancy projects with a vibration cleaning mechanism, the problem of low cleaning efficiency of filter plates in the prior art is solved, and more efficient filtration effect and reuse of filter plates are achieved.
Patent Information
- Application Number
- CN202510402266.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-06-24
AI Technical Summary
The existing waterproof and drainage equipment for water conservancy projects is inefficient in cleaning the filter plate, and cannot effectively remove the silt and sand on the surface of the filter plate, resulting in a decrease in filtration effect.
A waterproof and drainage device including a box, a water inlet pipe, a water outlet, a rotary connection assembly, a group of filter plates, a cleaning tank and a cleaning mechanism are designed. The cleaning mechanism consists of a cleaning shell, a connector, a bristle, a housing drive assembly and a vibrating mechanism, and the filter plate is cleaned by vibrating bristles.
Through the use of the vibration cleaning mechanism, the silt and sand on the filter plate can be effectively removed, the cleanliness of the filter plate and the filtration effect after reuse can be improved.
Smart Images

Figure CN120193486A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of water conservancy projects, and particularly relates to a waterproof and drainage device for water conservancy project construction. Background Art
[0002] A water conservancy project is a project built to control and allocate surface water and groundwater in nature to achieve the purpose of eliminating disasters and bringing benefits. Water is an essential and precious resource for human production and life. During the construction of a water conservancy project, a waterproof and drainage device for water conservancy project construction is required.
[0003] During the waterproof and drainage construction of a water conservancy project, generally, a water pump is used to pump water from one place to another. Sometimes, the water often contains a lot of sludge and other pollutants, and the discharged water often causes quite a lot of pollution to another location. In existing waterproof and drainage devices, a filter plate is usually set to filter the muddy water. In order to improve the service life of the filter plate, a brush is also set on the side where the filter plate filters the muddy water to clean the filter plate. However, using a brush to clean the filter plate can only simply remove the sediment on the surface of the filter plate, and its cleaning efficiency is too low. Summary of the Invention
[0004] The purpose of the present invention is to provide a waterproof and drainage device with a simple structure and reasonable design to solve the above problems.
[0005] The present invention achieves the above purpose through the following technical solutions:
[0006] A waterproof and drainage device for water conservancy project construction includes a box body. One side of the box body is detachably connected with a water inlet pipe communicating with the box body. The other side of the box body is provided with a water outlet. A connecting component is rotatably connected to the inner wall of the box body. Multiple groups of filter plates are connected to the connecting component. By rotating the connecting component, multiple groups of filter plates are sequentially corresponding to the water inlet pipe, and the muddy water flows into the box body after being filtered by the filter plates;
[0007] A cleaning groove corresponding to the filter plate is opened on the surface of the box body away from the water inlet pipe. A cleaning mechanism is connected to the position of the outer surface of the box body corresponding to the cleaning groove. The cleaning mechanism includes a cleaning shell, a connecting piece, and bristles. The connecting piece is connected to the side of the cleaning shell close to the filter plate and extends into the cleaning shell. The bristles are connected to the side of the connecting piece close to the filter plate;
[0008] A shell driving component is connected to the surface of the cleaning shell. The shell driving component drives the cleaning shell to rotate. A vibration mechanism is arranged in the cleaning shell. The vibration mechanism drives the cleaning part, thereby driving the bristles to vibrate.
[0009] As a further optimized solution of the present invention, the connection component includes a connecting plate and a filter pipe. The connecting plate is rotatably connected to the inner wall of the box body. A plurality of groups of the filter pipes are arranged in a circle and penetrate through the connecting plate. The filter plate is connected to the water inlet end of the filter pipe corresponding to the water inlet pipe. A driving member is installed in the box body, and the connecting plate is connected to the driving end of the driving member.
[0010] As a further optimized solution of the present invention, a plurality of groups of the connecting members are provided. Ball grooves are formed on the surface of the cleaning shell. The connecting member includes a ball part, a connecting part and a swinging part. The ball part is movably connected in the ball groove. The swinging part is connected to the surface of the ball part and is located inside the cleaning shell. The connecting part is connected to the side of the ball part away from the swinging part. The brush hair is connected to the end of the connecting part away from the ball part.
[0011] As a further optimized solution of the present invention, a mounting frame is connected to the surface of the box body. The cleaning shell is rotatably connected to the mounting frame, and the shell driving assembly is connected to the mounting frame.
[0012] As a further optimized solution of the present invention, the vibration mechanism includes a rotating shaft, stirring blades, a fluid and a blade driving assembly. The blade driving assembly is connected to the mounting frame. A plurality of groups of the stirring blades are provided and arranged in a circle. One end of the rotating shaft penetrates through the side of the cleaning shell away from the brush hair and is rotatably connected to the surface of the mounting frame. The fluid is filled in the cleaning shell, and the blade driving assembly drives the rotating shaft to rotate.
[0013] As a further optimized solution of the present invention, the blade driving assembly includes a rotating shaft, rotating blades and a transmission assembly. A mounting shell communicated with it is connected to the surface of the water inlet pipe. The inner wall of the mounting shell is rotatably connected to the rotating shaft. A plurality of groups of the rotating blades are provided. A plurality of groups of the rotating blades are fixedly connected to the surface of the rotating shaft and are arranged in a circle. One end of the rotating shaft close to the cleaning mechanism extends outside the mounting shell and is rotatably connected to the mounting frame. The transmission assembly is connected to the rotating shaft.
[0014] As a further optimized solution of the present invention, the transmission assembly includes two groups of synchronous pulleys one, synchronous pulleys two, synchronous belts and a transmission shaft respectively. The transmission shaft is rotatably connected to the mounting frame. One group of the synchronous pulleys one is fixedly connected to the end of the rotating shaft outside the mounting shell. The other group of the synchronous pulleys one is fixedly connected to one end of the transmission shaft. One end of one group of the synchronous pulleys two is fixedly connected to the other end of the transmission shaft. The other group of the synchronous pulleys two is fixedly sleeved on the surface of the rotating shaft. The two groups of the synchronous belts are respectively sleeved on the surfaces of the two groups of the synchronous pulleys one and synchronous pulleys two.
[0015] As a further optimized solution of the present invention, the housing driving assembly includes a collar, a driving bevel gear, a transmission bevel gear, and a driven bevel gear. The collar is sleeved on the surface of the rotating shaft, one end of the collar is fixedly connected to the surface of the cleaning housing, the driven bevel gear is fixedly sleeved on the surface of the collar, the transmission bevel gear is rotatably connected to the mounting bracket, the driving bevel gear is fixedly sleeved on the surface of the rotating shaft, and the transmission bevel gear meshes with the driving bevel gear and the driven bevel gear respectively.
[0016] As a further optimized solution of the present invention, a sediment box is placed on the mounting bracket, and the sediment box is located below the cleaning housing.
[0017] The beneficial effects of the present invention are as follows: The present invention is provided with a cleaning groove on the surface of the box body, so that the brush bristles can clean the used filter plate. At the same time, a connecting member, a cleaning housing, and a vibration mechanism are provided. The brush bristles are connected to the cleaning housing through the connecting member, and the vibration mechanism makes the brush bristles vibrate, so that the filter plate can be fully cleaned, and the filtering effect of the filter plate that can be continuously used after cleaning is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present invention;
[0019] Figure 2 is the structural schematic diagram of the water inlet pipe of Embodiment 1 of the present invention;
[0020] Figure 3 is the structural schematic diagram of the box body of Embodiment 1 of the present invention;
[0021] Figure 4 is the position schematic diagram of the cleaning mechanism of Embodiment 1 of the present invention;
[0022] Figure 5 is the structural schematic diagram of the cleaning mechanism of Embodiment 1 of the present invention;
[0023] Figure 6 is the structural schematic diagram of the connecting member of Embodiment 2 of the present invention;
[0024] Figure 7 is the structural schematic diagram of the rotating blade of Embodiment 2 of the present invention;
[0025] Figure 8 is the structural schematic diagram of the transmission assembly of Embodiment 2 of the present invention;
[0026] Figure 9 is the structural schematic diagram of the housing driving assembly of Embodiment 2 of the present invention;
[0027] Figure 10 is the structural schematic diagram of the sediment box of Embodiment 2 of the present invention.
[0028] In the figure: 1. Box body 1; 2. Water inlet pipe; 3. Water outlet; 4. Connection component; 41. Connection plate; 42. Filter pipe; 5. Filter plate; 6. Cleaning groove; 7. Cleaning mechanism; 71. Cleaning shell; 72. Connector; 721. Ball part; 722. Connection part; 723. Swing part; 73. Brush hair; 8. Shell driving component; 81. Ring sleeve; 82. Driving bevel gear; 83. Driven bevel gear; 84. Driven bevel gear; 9. Vibration mechanism; 91. Rotating shaft; 92. Stirring blade; 93. Blade driving component; 931. Rotating shaft; 932. Rotating blade; 933. Synchronous pulley 1; 934. Synchronous pulley 2; 935. Synchronous belt; 936. Transmission shaft; 10. Driving part; 11. Ball groove; 12. Mounting bracket; 13. Sediment box; 14. Mounting shell. Specific embodiments
[0029] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0030] Embodiment 1
[0031] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown in the partial structure, a waterproof and drainage device for water conservancy project construction includes a box body 1. One side of the box body 1 is detachably connected with a water inlet pipe 2 that penetrates the box body 1. The other side of the box body 1 is provided with a water outlet 3. A connection component 4 is rotatably connected to the inner wall of the box body 1. Multiple groups of filter plates 5 are connected to the connection component 4. By rotating the connection component 4, multiple groups of filter plates 5 are sequentially corresponding to the water inlet pipe 2. After the muddy water is filtered by the filter plates 5, it flows into the box body 1;
[0032] A cleaning groove 6 corresponding to the filter plate 5 is opened on the surface of the box body 1 away from the water inlet pipe 2. A cleaning mechanism 7 is connected to the position of the outer surface of the box body 1 corresponding to the cleaning groove 6. The cleaning mechanism 7 includes a cleaning shell 71, a connector 72 and a brush hair 73. The connector 72 is connected to the side of the cleaning shell 71 close to the filter plate 5 and extends into the cleaning shell 71. The brush hair 73 is connected to the side of the connector 72 close to the filter plate 5;
[0033] A shell driving component 8 is connected to the surface of the cleaning shell 71. The shell driving component 8 drives the cleaning shell 71 to rotate. A vibration mechanism 9 is arranged in the cleaning shell 71. The vibration mechanism 9 drives the cleaning part, thereby driving the brush hair 73 to vibrate.
[0034] It should be noted that a water pump can be installed at one end of the water inlet pipe 2 far from the box body 1 for pumping water. The connection between the water pump and the water inlet pipe 2, as well as the connection between the water inlet pipe 2 and the box body 1, are both detachable connections. Specifically, bolts can be used for connection or pipe connectors can be used for connection. Through this setting, it is convenient to clean the filtered sediment in the water inlet pipe 2.
[0035] It should be further noted that by vibrating the bristles 73, the filter plate 5 can be cleaned more thoroughly. When the cleaned filter plate 5 is used again, its filtering effect will be relatively better.
[0036] Reference Figure 4 Referring to the partial structure shown, the connection assembly 4 includes a connecting plate 41 and a filter pipe 42. The connecting plate 41 is rotatably connected to the inner wall of the box body 1. A plurality of groups of the filter pipes 42 are arranged in a circle and penetrate through the connecting plate 41. The filter plate 5 is connected to the water inlet end of the filter pipe 42 corresponding to the water inlet pipe 2. A driving member 10 is installed in the box body 1, and the connecting plate 41 is connected to the driving end of the driving member 10.
[0037] Specifically, the bristles 73 extend into the cleaning groove 6 and contact the surface of the filter plate 5.
[0038] In this embodiment, the vibration mechanism 9 can be a vibration motor. The vibration motor is installed in the cleaning shell 71. The connecting member 72 is a circular plate. The circular plate is connected to the surface of the cleaning shell 71 close to the filter plate 5. And a columnar block is protruded on the surface of the circular plate close to the cleaning shell 71. The columnar block extends into the cleaning shell 71 and is connected to the driving end of the vibration motor.
[0039] Among them, both the housing driving assembly 8 and the driving member 10 can be a servo motor, a stepping motor, etc.
[0040] It should be noted that the number of the filter plates 5 can be set according to the actual situation, but at least two groups of the filter plates 5 are provided. In this way, when one group of the filter plates 5 filters the muddy water, the cleaning mechanism 7 can clean the other group of the filter plates 5 to improve the working efficiency.
[0041] Embodiment Two
[0042] This embodiment makes further improvements on the basis of Embodiment One, provides a structural alternative to the vibration motor in the vibration mechanism 9 in Embodiment One, and simultaneously sets a special connecting member 72 to cooperate with the use of the vibration mechanism 9 to reduce the manufacturing cost of the entire device. Specifically, referring to Figures 4 to 6As shown in the partial structure, the connecting member 72 is provided with multiple groups, a ball groove 11 is opened on the surface of the cleaning shell 71, the connecting member 72 includes a ball portion 721, a connecting portion 722 and a swinging portion 723, the ball portion 721 is movably connected in the ball groove 11, the swinging portion 723 is connected to the surface of the ball portion 721 and is located in the cleaning shell 71, the connecting portion 722 is connected to a side of the ball portion 721 away from the swinging portion 723, and the bristles 73 are connected to one end of the connecting portion 722 away from the ball portion 721.
[0043] It should be noted that the diameters of the connecting portion 722 and the swinging portion 723 of the connecting piece 72 are smaller than the openings on both sides of the ball slot 11. The size of the opening of the ball slot 11 affects the degree of inclination of the connecting portion 722. The opening of the ball slot 11 can be set smaller so that the entire connecting piece 72 can produce a slight shake.
[0044] Furthermore, a mounting frame 12 is connected to the surface of the box body 1, the cleaning shell 71 is rotatably connected to the mounting frame 12, and the shell driving assembly 8 is connected to the mounting frame 12.
[0045] Furthermore, the vibration mechanism 9 includes a rotating shaft 91, stirring blades 92, a fluid and a blade drive assembly 93, the blade drive assembly 93 is connected to the mounting frame 12, the stirring blades 92 are provided in multiple groups and are arranged in a circle, one end of the rotating shaft 91 passes through the side of the cleaning shell 71 away from the bristles 73 and is rotatably connected to the surface of the mounting frame 12, the fluid is filled in the cleaning shell 71, and the blade drive assembly 93 drives the rotating shaft 91 to rotate.
[0046] It should be noted that the fluid can be liquid or powder, specifically, water, oil, sand, etc. The filling amount of the fluid can be determined according to the actual situation, specifically, it can be three quarters of the internal volume of the cleaning shell 71, but the cleaning shell 71 cannot be filled up, nor should it be filled too little.
[0047] In actual use, the rotation direction of the rotating shaft 91 is opposite to that of the cleaning shell 71. The rotation of the rotating shaft 91 causes the stirring blades 92 to stir the fluid. The stirred fluid contacts the swinging portion 723, which drives the bristles 73 to vibrate.
[0048] refer to Figure 2 and Figure 7The partial structure shown, the blade driving assembly 93 includes a rotating shaft 931, a rotating blade 932 and a transmission assembly. The surface of the water inlet pipe 2 is connected with a mounting shell 14 communicated with it. The inner wall of the mounting shell 14 is rotatably connected with a rotating shaft 931. There are multiple groups of the rotating blades 932. Multiple groups of the rotating blades 932 are fixedly connected to the surface of the rotating shaft 931 and are arranged in a circumferential manner. One end of the rotating shaft 931 close to the cleaning mechanism 7 extends outside the mounting shell 14 and is rotatably connected to the mounting frame 12. The transmission assembly is connected to the rotating shaft 931.
[0049] It should be noted that by setting the rotating blade 932, when the muddy water passes through the water inlet pipe 2, the rotating shaft 931 can be rotated, so as to drive the cleaning shell 71 and the stirring blade 92 to rotate through the transmission assembly. And the setting of the rotating blade 932 can also reduce the impact force of the muddy water on the filter plate 5, preventing the muddy water from directly impacting the filter plate 5 and causing the filter plate 5 to be damaged too quickly.
[0050] Reference Figure 2 and Figure 8 The partial structure shown, the transmission assembly includes two groups of a first synchronous pulley 933, a second synchronous pulley 934, a synchronous belt 935 and a transmission shaft 936 respectively. The transmission shaft 936 is rotatably connected to the mounting frame 12. One group of the first synchronous pulleys 933 is fixedly connected to one end of the rotating shaft 931 outside the mounting shell 14. The other group of the first synchronous pulleys 933 is fixedly connected to one end of the transmission shaft 936. One end of one group of the second synchronous pulleys 934 is fixedly connected to the other end of the transmission shaft 936. The other group of the second synchronous pulleys 934 is fixedly sleeved on the surface of the rotating shaft 91. Two groups of the synchronous belts 935 are respectively sleeved on the surfaces of the two groups of the first synchronous pulleys 933 and the second synchronous pulleys 934.
[0051] Reference Figure 3 and Figure 9 The partial structure shown, the housing driving assembly 8 includes a collar 81, a driving bevel gear 82, a transmission bevel gear 83 and a driven bevel gear 84. The collar 81 is sleeved on the surface of the rotating shaft 91. One end of the collar 81 is fixedly connected to the surface of the cleaning shell 71. The driven bevel gear 84 is fixedly sleeved on the surface of the collar 81. The transmission bevel gear 83 is rotatably connected to the mounting frame 12. The driving bevel gear 82 is fixedly sleeved on the surface of the rotating shaft 91. The transmission bevel gear 83 meshes with the driving bevel gear 82 and the driven bevel gear 84 respectively.
[0052] It should be noted that by setting the housing driving assembly 8, the cleaning shell 71 and the stirring blade 92 can rotate in opposite directions.
[0053] Reference Figure 9 and Figure 10The partial structure shown, a sediment box 13 is placed on the mounting bracket 12, and the sediment box 13 is located below the cleaning housing 71.
[0054] Specifically, the lower side of the cleaning groove 6 and the side of the upper surface of the sediment box 13 close to the box body 1 are both inclined. When the cleaning mechanism 7 cleans the filter plate 5, the sediment will flow into the sediment box 13, facilitating the centralized treatment of the sediment.
[0055] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.
Claims
1. A waterproof drainage device, comprising a box (1), one side of the box (1) is detachably connected to a water inlet pipe (2) that passes through the box (1), and the other side of the box (1) is provided with a water outlet (3), characterized in that: The inner wall of the box body (1) is rotatably connected with a connecting assembly (4), and a plurality of groups of filter plates (5) are connected to the connecting assembly (4). The connecting assembly (4) is rotated so that the plurality of groups of filter plates (5) correspond to the water inlet pipe (2) in sequence; A cleaning groove (6) corresponding to the filter plate (5) is provided on a surface of a side of the box body (1) away from the water inlet pipe (2); a cleaning mechanism (7) is connected to a position on the outer surface of the box body (1) corresponding to the cleaning groove (6); the cleaning mechanism (7) comprises a cleaning shell (71), a connecting piece (72) and bristles (73); the connecting piece (72) is connected to a side of the cleaning shell (71) close to the filter plate (5) and extends into the cleaning shell (71); and the bristles (73) are connected to a side of the connecting piece (72) close to the filter plate (5); The surface of the cleaning shell (71) is connected to a shell driving assembly (8), and the shell driving assembly (8) drives the cleaning shell (71) to rotate. A vibration mechanism (9) is provided inside the cleaning shell (71), and the vibration mechanism (9) drives the cleaning member, thereby driving the bristles (73) to vibrate.
2. A waterproof drainage device according to claim 1, characterized in that: The connection assembly (4) comprises a connection plate (41) and a filter tube (42); the connection plate (41) is rotatably connected to the inner wall of the housing (1); a plurality of groups of filter tubes (42) are arranged in a circumferential manner and penetrate the connection plate (41); the filter plate (5) is connected to the water inlet end of the filter tube (42) and corresponds to the water inlet pipe (2); a driving member (10) is installed in the housing (1); and the connection plate (41) is connected to the driving end of the driving member (10).
3. A waterproof drainage device according to claim 2, characterized in that: The connecting member (72) is provided with a plurality of groups. A ball groove (11) is provided on the surface of the cleaning shell (71). The connecting member (72) comprises a ball portion (721), a connecting portion (722) and a swinging portion (723). The ball portion (721) is movably connected in the ball groove (11). The swinging portion (723) is connected to the surface of the ball portion (721) and is located in the cleaning shell (71). The connecting portion (722) is connected to a side of the ball portion (721) away from the swinging portion (723). The bristles (73) are connected to an end of the connecting portion (722) away from the ball portion (721).
4. A waterproof drainage device according to claim 1, characterized in that: The surface of the box body (1) is connected to a mounting frame (12), the cleaning shell (71) is rotatably connected to the mounting frame (12), and the shell driving assembly (8) is connected to the mounting frame (12).
5. A waterproof drainage device according to claim 4, characterized in that: The vibration mechanism (9) comprises a rotating shaft (91), stirring blades (92), a fluid and a blade driving assembly (93); the blade driving assembly (93) is connected to a mounting frame (12); the stirring blades (92) are provided in a plurality of groups and are arranged in a circumferential manner; one end of the rotating shaft (91) passes through a side of the cleaning shell (71) away from the bristles (73) and is rotatably connected to the surface of the mounting frame (12); the fluid is filled in the cleaning shell (71); and the blade driving assembly (93) drives the rotating shaft (91) to rotate.
6. A waterproof drainage device according to claim 4, characterized in that: The blade drive assembly (93) comprises a rotating shaft (931), rotating blades (932) and a transmission assembly. The surface of the water inlet pipe (2) is connected to a mounting shell (14) which is in communication with the water inlet pipe. The inner wall of the mounting shell (14) is rotatably connected to the rotating shaft (931). A plurality of groups of rotating blades (932) are provided. The plurality of groups of rotating blades (932) are all fixedly connected to the surface of the rotating shaft (931) and are arranged in a circumferential manner. One end of the rotating shaft (931) close to the cleaning mechanism (7) extends outside the mounting shell (14) and is rotatably connected to the mounting frame (12). The transmission assembly is connected to the rotating shaft (931).
7. A waterproof drainage device according to claim 6, characterized in that: The transmission assembly comprises two groups of synchronous wheels (933), synchronous wheels (934), synchronous belts (935) and transmission shafts (936), wherein the transmission shafts (936) are rotatably connected to the mounting frame (12), one group of synchronous wheels (933) is fixedly connected to one end of the rotating shaft (931) located outside the mounting shell (14), another group of synchronous wheels (933) is fixedly connected to one end of the transmission shaft (936), one end of one group of synchronous wheels (934) is fixedly connected to the other end of the transmission shaft (936), another group of synchronous wheels (934) is fixedly sleeved on the surface of the rotating shaft (91), and the two groups of synchronous belts (935) are respectively sleeved on the surfaces of the two groups of synchronous wheels (933) and synchronous wheels (934).
8. A waterproof drainage device according to claim 7, characterized in that: The housing drive assembly (8) comprises a ring sleeve (81), a driving bevel gear (82), a transmission bevel gear (83) and a driven bevel gear (84); the ring sleeve (81) is sleeved on the surface of a rotating shaft (91); one end of the ring sleeve (81) is fixedly connected to the surface of a cleaning shell (71); the driven bevel gear (84) is fixedly sleeved on the surface of the ring sleeve (81); the transmission bevel gear (83) is rotatably connected to a mounting frame (12); the driving bevel gear (82) is fixedly sleeved on the surface of the rotating shaft (91); and the transmission bevel gear (83) is respectively meshed with the driving bevel gear (82) and the driven bevel gear (84).
9. A waterproof drainage device according to claim 4, characterized in that: A mud and sand box (13) is placed on the mounting frame (12), and the mud and sand box (13) is located below the cleaning shell (71).