Working shoe sole cleaning equipment
By designing an automated work shoe sole cleaning equipment, a multi-stage cleaning and drying device was used to solve the problem of difficult-to-remove dirt from shoe soles, achieving efficient cleaning results and ensuring safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-31
AI Technical Summary
In existing technologies, it is difficult to completely remove dirt from the soles of work shoes, which affects hygiene and increases the risk of slipping and falling.
A work shoe sole cleaning device was designed, which includes a pre-washing device, an upper and lower rinsing device, a disinfection rinsing device, a clean water rinsing device, a water removal device, a drying device, and a strong blowing cooling device. The device automatically cleans the soles of the shoes using a mesh belt conveyor and achieves multi-stage cleaning and drying using components such as brush rollers, nozzles, and high-pressure fans.
It achieves highly efficient and automated shoe sole cleaning, meets hygiene requirements, avoids safety accidents caused by oil and dirt, and improves cleaning efficiency.
Smart Images
Figure CN224055950U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machinery, and more particularly to cleaning devices, especially a work shoe sole cleaning device. Background Technology
[0002] In industrial production processes, the soles of workers' work shoes easily accumulate oil, dust, and other grime. This grime is difficult to remove completely by manual cleaning, resulting in low cleaning efficiency. Failure to thoroughly remove it can lead to the following problems: 1. Bacteria thrive in the grime on the soles, causing excessive microorganisms in the production environment and affecting hygiene. 2. Unremoved oil stains on the soles can make the floor slippery, increasing the risk of slips and falls, and potentially causing accidents. Utility Model Content
[0003] The purpose of this utility model is to provide a work shoe sole cleaning device, which aims to solve the technical problem in the prior art where the dirt on the soles is not completely removed, affecting hygiene conditions and increasing the risk of slipping and falling.
[0004] This utility model discloses a work shoe sole cleaning device, including a mesh belt conveyor. The mesh belt conveyor includes a frame, on which a mesh belt and a motor are mounted. The mesh belt includes an upper mesh belt and a lower mesh belt connected in a ring. The output shaft of the motor is connected to the mesh belt through a transmission mechanism. Along the conveying direction of the mesh belt, the frame is sequentially equipped with a pre-washing device, an upper and lower rinsing device, a disinfection rinsing device, a clean water rinsing device, a dewatering device, a drying device, and a powerful air cooling device. A first photoelectric switch is mounted on the frame between the pre-washing device and the upper and lower rinsing device. A second photoelectric switch is mounted on the frame between the upper and lower rinsing device and the disinfection rinsing device. A third photoelectric switch is mounted on the frame between the disinfection rinsing device and the clean water rinsing device. A fourth photoelectric switch is mounted on the frame between the clean water rinsing device and the dewatering device. A fifth photoelectric switch is mounted on the frame between the drying device and the powerful air cooling device.
[0005] Furthermore, the pre-washing device includes a first water tank, which is provided with a first water inlet, a first overflow outlet, and a first drain outlet. A first water inlet pipe, a first brush roller, and a first water collection tank are installed in the frame between the upper and lower mesh belts. The first water tank is connected to the first water inlet pipe through a first water pump and a pipe. A plurality of first nozzles are provided on the first water inlet pipe. The axial direction of the first brush roller is perpendicular to the conveying direction of the mesh belt and parallel to the upper surface of the mesh belt. The first nozzles and the first brush roller are located on the lower side of the upper mesh belt. The first nozzles and the first brush roller are arranged alternately along the conveying direction of the mesh belt. The output shaft of the motor is connected to the first brush roller through a transmission mechanism. The first water collection tank is located below the first nozzles. The bottom of the first water collection tank is connected to a recycling tank through a first drain pipe. A filter screen is provided in the recycling tank, and a sewage discharge outlet is provided at the bottom of the recycling tank.
[0006] Furthermore, the upper and lower rinsing device includes a second water tank, which is equipped with a second water inlet, a steam inlet, a second overflow outlet, and a second drain outlet. A temperature sensor is installed in the second water tank. A second water inlet pipe, a second brush roller, and a second water collection tank are installed in the frame between the upper and lower mesh belts. The second water inlet pipe extends above the upper mesh belt. The second water tank is connected to the second water inlet pipe via a second water pump and a second pipe. Several second nozzles are installed on the second water inlet pipe, which are distributed below and above the upper mesh belt. The axial direction of the second brush roller is perpendicular to the conveying direction of the mesh belt. The second nozzles and the second brush roller are arranged alternately along the conveying direction of the mesh belt. The output shaft of the motor is connected to the second brush roller via a transmission mechanism. The second water collection tank is located below the second nozzles, and the bottom of the second water collection tank is connected to the second water tank via a second drain pipe.
[0007] Furthermore, the disinfection and rinsing device includes a third water tank, which is equipped with a third water inlet, a third overflow outlet, and a third drain outlet. A third water inlet pipe and a third water collection tank are installed in the frame between the upper and lower mesh belts. The third water tank is connected to the third water inlet pipe via a third water pump and a pipe. Several third nozzles are installed on the third water inlet pipe. The third nozzles are located below the upper mesh belt, and the third water collection tank is located below the third nozzles. The bottom of the third water collection tank is connected to the third water tank via a third drain pipe.
[0008] Furthermore, the clean water rinsing device includes a fourth water tank, which is equipped with a fourth water inlet, a fourth overflow outlet, and a fourth drain outlet. A fourth water inlet pipe and a fourth water collection tank are arranged in the frame between the upper and lower mesh belts. The fourth water tank is connected to the fourth water inlet pipe through a fourth water pump and a pipe. Several fourth nozzles are arranged on the fourth water inlet pipe. The fourth nozzles are located below the upper mesh belt, and the fourth water collection tank is located below the fourth nozzles. The bottom of the fourth water collection tank is connected to the fourth water tank through a fourth drain pipe.
[0009] Furthermore, the water removal device includes a high-pressure axial flow fan, and a first air inlet pipe is installed on the frame above and below the upper mesh belt. The air outlet of the high-pressure axial flow fan is connected to the first air inlet pipe. Several first air nozzles are provided on the first air inlet pipe, which are distributed above and below the upper mesh belt. A fifth water collection tank is installed in the frame below the upper mesh belt, and a fifth drain pipe is connected to the bottom of the fifth water collection tank.
[0010] Furthermore, the drying device includes a high-pressure vortex blower, and second air inlet pipes are installed on the frame above and below the upper mesh belt. The air outlet of the high-pressure vortex blower is connected to the second air inlet pipes. Several second air nozzles are provided on the second air inlet pipes, which are distributed above and below the upper mesh belt. A sixth water collection tank is installed in the frame below the upper mesh belt, and a sixth drain pipe is connected to the bottom of the sixth water collection tank.
[0011] Furthermore, the forced-air cooling device includes a third air inlet pipe installed in the frame below the upper mesh belt. The third air inlet pipe is connected to a compressed air source through a solenoid valve. Several third air nozzles are installed on the third air inlet pipe, and the third air nozzles are located below the upper mesh belt.
[0012] Compared with the prior art, the advantages of this invention are positive and obvious. This invention utilizes a pre-washing device, an upper and lower rinsing device, a disinfection rinsing device, a clean water rinsing device, a water removal device, a drying device, and a strong blowing cooling device to automatically clean the soles of work shoes. The cleaning effect is good, the efficiency is high, the hygiene requirements are met, and the safety accidents caused by oil and dirt problems are avoided. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the pre-washing device, upper and lower rinsing device, and disinfection rinsing device in a work shoe sole cleaning equipment of this utility model.
[0014] Figure 2 This is a schematic diagram of a clean water rinsing device, a water removal device, a drying device, and a strong blowing cooling device in a work shoe sole cleaning equipment of this utility model.
[0015] Figure 3 This is a schematic diagram of the mesh belt conveyor in a work shoe sole cleaning equipment according to this utility model. Detailed Implementation
[0016] The present invention will be further described below with reference to embodiments, but the present invention is not limited to these embodiments. Any similar variations using the present invention should be included within the protection scope of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of clear description and is not intended to limit the technical solution of the present invention.
[0017] like Figures 1-3As shown, this utility model discloses a work shoe sole cleaning device, including a mesh belt conveyor. The mesh belt conveyor includes a frame 1, on which a mesh belt 2 and a motor 3 are mounted. The mesh belt 2 includes an upper mesh belt and a lower mesh belt connected in a ring. The output shaft of the motor 3 is connected to the mesh belt 2 through a transmission mechanism. Along the conveying direction of the mesh belt 2, the frame 1 is sequentially equipped with a pre-washing device 4, an upper and lower rinsing device 5, a disinfection rinsing device 6, a clean water rinsing device 7, a dewatering device 8, a drying device 9, and a strong blowing cooling device 10. A first photoelectric switch 11 is installed between the pre-washing device 4 and the upper and lower rinsing device 5 on the frame 1. A second photoelectric switch 12 is installed between the upper and lower rinsing device 5 and the disinfection rinsing device 6 on the frame 1. A third photoelectric switch 13 is installed between the disinfection rinsing device 6 and the clean water rinsing device 7 on the frame 1. A fourth photoelectric switch 14 is installed between the clean water rinsing device 7 and the dewatering device 8 on the frame 1. A fifth photoelectric switch 15 is installed between the drying device 9 and the strong blowing cooling device 10 on the frame 1.
[0018] Furthermore, the pre-washing device 4 includes a first water tank 41, which is equipped with a first water inlet 42, a first overflow outlet, and a first drain outlet. A first water inlet pipe 43, a first brush roller 44, and a first water collection tank (not shown) are installed between the upper and lower mesh belts in the frame 1. The first water tank 41 is connected to the first water inlet pipe 43 via a first water pump 45 and a pipe. The first water inlet pipe 43 is equipped with several first nozzles 46. The axial direction of the first brush roller 44 is perpendicular to the mesh belt 2. The conveying direction is parallel to the upper surface of the mesh belt 2. The first nozzle 46 and the first brush roller 44 are located on the lower side of the upper mesh belt. The first nozzle 46 and the first brush roller 44 are arranged alternately along the conveying direction of the mesh belt 2. The output shaft of the motor 3 is connected to the first brush roller 44 through a transmission mechanism. The first water collection tank is located below the first nozzle 46. The bottom of the first water collection tank is connected to a recycling tank 48 through a first drainage pipe 47. A filter screen 49 is provided in the recycling tank 48. A sewage discharge port is provided at the bottom of the recycling tank 48.
[0019] Furthermore, the upper and lower rinsing device 5 includes a second water tank 51, which is provided with a second water inlet, a steam inlet 52, a second overflow outlet, and a second drain outlet. A temperature sensor (not shown in the figure) is installed in the second water tank 51. A second water inlet pipe, a second brush roller, and a second water collection tank (not shown in the figure) are installed between the upper and lower mesh belts in the frame 1. The second water inlet pipe extends above the upper mesh belt. The second water tank 51 is connected to the second water inlet pipe through a second water pump and a second pipe. Several second nozzles 53 are provided on the second water inlet pipe. The second nozzles 53 are distributed below and above the upper mesh belt. The axis of the second brush roller is perpendicular to the conveying direction of the mesh belt 2. The second nozzles 53 and the second brush roller are arranged alternately along the conveying direction of the mesh belt 2. The output shaft of the motor 3 is connected to the second brush roller through a transmission mechanism. The second water collection tank is located below the second nozzles 53. The bottom of the second water collection tank is connected to the second water tank 51 through a second drain pipe.
[0020] Furthermore, the disinfection and rinsing device 6 includes a third water tank 61, which is equipped with a third water source inlet, a third overflow outlet, and a third drain outlet. A third water inlet pipe and a third water collection tank (not shown in the figure) are installed between the upper and lower mesh belts in the frame 1. The third water tank 61 is connected to the third water inlet pipe through a third water pump and a pipe. Several third nozzles 62 are provided on the third water inlet pipe. The third nozzles 62 are located below the upper mesh belt, and the third water collection tank is located below the third nozzles 62. The bottom of the third water collection tank is connected to the third water tank 61 through a third drain pipe.
[0021] Furthermore, the clean water rinsing device 7 includes a fourth water tank 71, which is provided with a fourth water source inlet, a fourth overflow outlet and a fourth drain outlet. In the frame 1, a fourth water inlet pipe and a fourth water collection tank (not shown in the figure) are provided between the upper and lower mesh belts. The fourth water tank 71 is connected to the fourth water inlet pipe through a fourth water pump and a pipe. Several fourth nozzles 72 are provided on the fourth water inlet pipe. The fourth nozzles 72 are located below the upper mesh belt. The fourth water collection tank is located below the fourth nozzles 72. The bottom of the fourth water collection tank is connected to the fourth water tank 71 through a fourth drain pipe.
[0022] Furthermore, the water removal device 8 includes a high-pressure axial flow fan 81. A first air inlet pipe is installed on the frame 1 above and below the upper mesh belt. The air outlet of the high-pressure axial flow fan 81 is connected to the first air inlet pipe. Several first air nozzles 82 are provided on the first air inlet pipe. The first air nozzles 82 are distributed above and below the upper mesh belt. A fifth water collection tank (not shown in the figure) is installed on the frame 1 below the upper mesh belt. A fifth drainage pipe 83 is connected to the bottom of the fifth water collection tank.
[0023] Furthermore, the drying device 9 includes a high-pressure vortex blower 91. A second air inlet pipe is installed on the frame 1 above and below the upper mesh belt. The air outlet of the high-pressure vortex blower 91 is connected to the second air inlet pipe. Several second air nozzles 92 are provided on the second air inlet pipe. The second air nozzles 92 are distributed above and below the upper mesh belt. A sixth water collection tank (not shown in the figure) is installed in the frame 1 below the upper mesh belt. A sixth drain pipe 93 is connected to the bottom of the sixth water collection tank.
[0024] Furthermore, the forced-air cooling device 10 includes a third air inlet pipe installed in the frame 1 below the upper mesh belt. The third air inlet pipe is connected to a compressed air source through a solenoid valve 101. Several third air nozzles 102 are provided on the third air inlet pipe, and the third air nozzles 102 are located below the upper mesh belt.
[0025] Specifically, the transmission mechanism includes sprockets and chains. The motor drives the mesh belt to move through the sprockets and chains, and drives the brush roller to rotate through the sprockets.
[0026] The control scheme can be either non-intelligent or intelligent. In the non-intelligent scheme, each photoelectric switch is connected to a control circuit, and each control circuit includes a relay. The power supply terminals of the water pump, fan, and solenoid valve 101 are connected to the power supply via relays. The intelligent scheme uses a microcontroller, with the signal output terminals of the photoelectric switches connected to the microcontroller.
[0027] Specifically, the specific structure and principle of the mesh belt conveyor, mesh belt 2, motor 3, upper mesh belt, lower mesh belt, photoelectric switch, brush roller, nozzle, filter screen 49, water pump, high-pressure axial flow fan 81, air nozzle, high-pressure vortex fan 91, solenoid valve 101, compressed air source, control circuit, relay, and single-chip microcomputer in this utility model, as well as other parts not described in detail, all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.
[0028] In this embodiment, the signal output terminals of the first photoelectric switch 11, the second photoelectric switch 12, the third photoelectric switch 13, the fourth photoelectric switch 14, and the fifth photoelectric switch 15, as well as the control terminals of the pre-washing device 4, the upper and lower rinsing devices 5, the disinfection rinsing device 6, the clean water rinsing device 7, the water removal device 8, the drying device 9, and the strong blowing cooling device 10 are all connected to a controller (not shown in the figure). The controller adopts the technical solution, principle, and circuit of a single-chip microcomputer in the prior art.
[0029] The working process of this utility model:
[0030] 1. Turn on the main power switch.
[0031] 2. Steam is introduced through steam inlet 52 to heat the water in the second water tank 51 to 65 degrees Celsius, and the temperature is monitored by a temperature sensor.
[0032] 3. The work shoes are conveyed into the pre-washing device 4 with the soles facing down via the mesh belt 2. Water from the first water tank 41 is sprayed out by the first water pump 45 and the first nozzle 46, which, together with the first brush roller 44 at the bottom, washes and scrubs the dirt on the soles. The sewage and waste flow into the first water collection tank and then through the first drainage pipe 47 to the recycling pool 48. The filter screen 49 filters out the dirt.
[0033] 5. After the pre-washing is completed, when the work shoes pass through the first photoelectric switch 11, the upper and lower rinsing device 5 is started under the control of the controller. The water in the second water tank 51 is sprayed out through the second water pump and the second nozzle 53. The upper and lower distributed second nozzles 53 clean the work shoes from top to bottom, and then return to the second water tank 51 through the second water collection tank and the second drainage pipe. The water in the second water tank 51 is replaced regularly.
[0034] 6. After the upper and lower rinsing is completed, when the work shoes pass the second photoelectric switch 12, the disinfection and rinsing device 6 is activated. The third water source inlet of the third water tank 61 is connected to the sodium hypochlorite water pipe. The soles of the shoes are disinfected and rinsed through the third water pump and the third nozzle 62. The water then flows back to the third water tank 61 through the third water collection tank and the third drainage pipe. The water in the third water tank 61 is changed regularly.
[0035] 7. After disinfection and rinsing, when the work shoes pass through the third photoelectric switch 13, the clean water rinsing device 7 is activated. The clean water is then used to rinse the soles of the shoes through the fourth water pump and the fourth nozzle 72. The water then flows back to the fourth water tank 71 through the fourth water collection tank and the fourth drainage pipe. The water in the fourth water tank 71 is changed regularly.
[0036] 8. After cleaning and rinsing, when the fourth photoelectric switch 14 is passed, the dewatering device 8 and the drying device 9 are started. The high-pressure axial flow fan 81 removes water from the work shoes through the first air nozzle 82. The excess water is discharged through the fifth water collection tank and the fifth drainage pipe 83. Then the work shoes enter the drying device 9. The 65-degree hot air generated by the high-pressure vortex fan 91 (which integrates a heating element) dries the work shoes through the second air nozzle 92. The excess water is discharged through the sixth water collection tank and the sixth drainage pipe 93.
[0037] 9. After drying is completed, when the fifth photoelectric switch 15 is passed, the forced cooling device 10 is started. Compressed air is blown through the third air nozzle 102 for the final high-pressure purging, which also serves to cool down the temperature.
[0038] 10. Clean the waste in recycling pool 48 after the end of each workday. Discharge the wastewater in recycling pool 48 through the wastewater discharge outlet.
[0039] This utility model utilizes a pre-washing device 4, an upper and lower rinsing device 5, a disinfection rinsing device 6, a clean water rinsing device 7, a water removal device 8, a drying device 9, and a strong blowing cooling device 10 to automatically clean the soles of work shoes. The cleaning effect is good, the efficiency is high, the hygiene requirements are met, and the safety accidents caused by oil and dirt problems are avoided.
Claims
1. A work shoe sole cleaning apparatus characterized by, The application relates to a mesh belt conveyor, which comprises a frame, a mesh belt arranged on the frame and a motor, wherein the mesh belt comprises an upper mesh belt and a lower mesh belt connected into a ring shape, the output shaft of the motor is connected with the mesh belt through a transmission mechanism, the frame is sequentially provided with a pre-washing device, an up-down washing device, a sterilization washing device, a clean water washing device, a water removing device, a drying device and a strong blowing cooling device along the conveying direction of the mesh belt, the frame is provided with a first photoelectric switch between the pre-washing device and the up-down washing device, a second photoelectric switch between the up-down washing device and the sterilization washing device, a third photoelectric switch between the sterilization washing device and the clean water washing device, a fourth photoelectric switch between the clean water washing device and the water removing device and a fifth photoelectric switch between the drying device and the strong blowing cooling device.
2. A sole cleaning apparatus for work shoes according to claim 1, wherein The pre-washing device comprises a first water tank, a first water source inlet, a first overflow port and a first drainage port are arranged on the first water tank, a first water inlet pipeline, a first brush roller and a first water collecting tank are arranged in the frame between the upper mesh belt and the lower mesh belt, the first water tank is connected with the first water inlet pipeline through a first water pump and a pipeline, a plurality of first nozzles are arranged on the first water inlet pipeline, the axial direction of the first brush roller is perpendicular to the conveying direction of the mesh belt and parallel to the upper surface of the mesh belt, the first nozzles and the first brush roller are located on the lower side of the upper mesh belt, the first nozzles and the first brush roller are arranged in a staggered mode along the conveying direction of the mesh belt, the output shaft of the motor is connected with the first brush roller through a transmission mechanism, the first water collecting tank is located below the first nozzles, a recovery tank is connected with the first water collecting tank through a first drainage pipeline at the bottom of the first water collecting tank, a filter screen is arranged in the recovery tank and a sewage discharge port is arranged at the bottom of the recovery tank.
3. A sole cleaning apparatus for work shoes according to claim 1, wherein The up-down washing device comprises a second water tank, a second water source inlet, a steam inlet, a second overflow port and a second drainage port are arranged on the second water tank, a temperature sensor is arranged in the second water tank, a second water inlet pipeline, a second brush roller and a second water collecting tank are arranged in the frame between the upper mesh belt and the lower mesh belt, the second water inlet pipeline extends to above the upper mesh belt, the second water tank is connected with the second water inlet pipeline through a second water pump and a second pipeline, a plurality of second nozzles are arranged on the second water inlet pipeline, the second nozzles are distributed below and above the upper mesh belt, the axial direction of the second brush roller is perpendicular to the conveying direction of the mesh belt, the second nozzles and the second brush roller are arranged in a staggered mode along the conveying direction of the mesh belt, the output shaft of the motor is connected with the second brush roller through a transmission mechanism, the second water collecting tank is located below the second nozzles, the second water collecting tank is connected with the second water tank through a second drainage pipeline.
4. The sole cleaning apparatus for work shoes according to claim 1, wherein The disinfecting and flushing device comprises a third water tank, a third water source inlet, a third overflow port and a third water outlet are arranged on the third water tank, a third water inlet pipeline and a third water collecting tank are arranged between the upper layer net belt and the lower layer net belt in the frame, the third water tank is connected with the third water inlet pipeline through a third water pump and a pipeline, a plurality of third nozzles are arranged on the third water inlet pipeline, the third nozzles are located below the upper layer net belt, the third water collecting tank is located below the third nozzles, and the bottom of the third water collecting tank is connected with the third water tank through a third water outlet pipeline.
5. The sole cleaning apparatus for work shoes according to claim 1, wherein The clean water flushing device comprises a fourth water tank, a fourth water source inlet, a fourth overflow port and a fourth water outlet are arranged on the fourth water tank, a fourth water inlet pipeline and a fourth water collecting tank are arranged between the upper layer net belt and the lower layer net belt in the frame, the fourth water tank is connected with the fourth water inlet pipeline through a fourth water pump and a pipeline, a plurality of fourth nozzles are arranged on the fourth water inlet pipeline, the fourth nozzles are located below the upper layer net belt, the fourth water collecting tank is located below the fourth nozzles, and the bottom of the fourth water collecting tank is connected with the fourth water tank through a fourth water outlet pipeline.
6. A sole cleaning apparatus for work shoes according to claim 1, wherein The water removing device comprises a high-pressure axial flow fan, first air inlet pipelines are arranged above and below the upper layer net belt on the frame, the air outlet of the high-pressure axial flow fan is communicated with the first air inlet pipelines, a plurality of first air nozzles are arranged on the first air inlet pipelines, the first air nozzles are distributed above and below the upper layer net belt, a fifth water collecting tank is arranged below the upper layer net belt in the frame, and the bottom of the fifth water collecting tank is connected with a fifth water outlet pipeline.
7. The sole cleaning apparatus for work shoes according to claim 1, wherein The drying device comprises a high-pressure vortex fan, second air inlet pipelines are arranged above and below the upper layer net belt on the frame, the air outlet of the high-pressure vortex fan is communicated with the second air inlet pipelines, a plurality of second air nozzles are arranged on the second air inlet pipelines, the second air nozzles are distributed above and below the upper layer net belt, a sixth water collecting tank is arranged below the upper layer net belt in the frame, and the bottom of the sixth water collecting tank is connected with a sixth water outlet pipeline.
8. The sole cleaning apparatus for work shoes according to claim 1, wherein The strong blowing and cooling device comprises a third air inlet pipeline arranged below the upper layer net belt in the frame, the third air inlet pipeline is connected with a compressed air source through an electromagnetic valve, a plurality of third air nozzles are arranged on the third air inlet pipeline, and the third air nozzles are located below the upper layer net belt.