Diamond polishing and grinding equipment for grinding ceramic parts

Abstract

The utility model relates to the technical field of ceramic production, in particular to diamond polishing and grinding equipment for grinding ceramic parts, which not only can drive the ceramic parts to be fed, discharged and positioned and improve the working efficiency, but also can prevent the parts generated in the polishing and grinding process from being inhaled by workers and protect the body health of the workers. Comprising a water treatment mechanism; the device further comprises a feeding mechanism, a grinding mechanism, a pressing mechanism and a water spraying mechanism, the feeding mechanism is installed on the water treatment mechanism and drives the ceramic parts to be fed and discharged, the grinding mechanism is installed on the water treatment mechanism and grinds the lower surfaces of the ceramic parts, and the pressing mechanism is installed on the water treatment mechanism and grinds the upper surfaces of the ceramic parts. The water spraying mechanism is installed on the pressing mechanism and flushes the ceramic part.

Description

Technical Field

[0001] This utility model relates to the technical field of ceramic production, and in particular to a diamond polishing device for grinding ceramic parts. Background Technology

[0002] Ceramic workpieces are sintered from silicon dioxide, aluminum oxide, and clay. They have many tiny pores and are mostly composed of oxides with high hardness. In order to further improve the gloss and smoothness of ceramic products, the surface of ceramic workpieces needs to be polished.

[0003] Existing diamond polishing equipment for grinding ceramic parts, such as the ceramic polishing device disclosed in utility model patent application number 202420394187.7, mainly includes a base frame, a cross-shaped worktable fixed on the top surface of the base frame, and two movable grooves symmetrically opened on the top surface of the cross-shaped worktable. The inner walls of the two movable grooves are slidably connected to sliders. In use, the ceramic block is limited by the clamping component, and then the two polishing rollers are moved closer to each other by rotating the second threaded rod, realizing the adjustment according to the thickness of the ceramic block to be polished. The drive motor drives the polishing rollers to rotate, and at the same time the stepper motor drives the first threaded rod to rotate in the groove, thereby driving the movable seat to move horizontally, and then driving the ceramic block to move and pass through the polishing rollers.

[0004] However, most existing polishing equipment does not collect and treat the dust produced during polishing. The dust can easily be inhaled by workers and affect their health. Moreover, most existing polishing equipment requires manual loading and placement, resulting in low work efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a diamond polishing device for ceramic parts that can not only drive the loading, unloading and positioning of ceramic parts, thus improving work efficiency, but also prevent the particles generated during polishing and grinding from being inhaled by workers, thus protecting their health.

[0006] This utility model discloses a diamond polishing device for grinding ceramic parts, including a water treatment mechanism; it also includes a feeding mechanism, a grinding mechanism, a pressing mechanism, and a water spraying mechanism. The feeding mechanism is installed on the water treatment mechanism and drives the ceramic parts to be loaded and unloaded. The grinding mechanism is installed on the water treatment mechanism and grinds the lower surface of the ceramic parts. The pressing mechanism is installed on the water treatment mechanism and grinds the upper surface of the ceramic parts. The water spraying mechanism is installed on the pressing mechanism and rinses the ceramic parts. A conveyor belt carries the ceramic parts to the feeding mechanism, which moves the ceramic parts between the grinding mechanism and the pressing mechanism. The pressing mechanism presses down on the ceramic parts. The grinding mechanism and the pressing mechanism work together to grind the upper and lower surfaces of the ceramic parts. During the grinding process, the water spraying mechanism sprays water, which not only avoids dust but also lubricates the ceramic parts and enhances the grinding effect.

[0007] Preferably, the water treatment mechanism includes a workbench, a dust cover, a display screen, a drain pipe, a treatment box, and a filter membrane. The bottom of the workbench is connected to the ground, and a discharge port is opened on the workbench. The bottom of the dust cover is connected to the top of the workbench, and the dust cover has an internal cavity. A feed port is opened on the dust cover, and the top of the drain pipe is connected to the bottom of the dust cover. The treatment box is installed on the workbench and is connected to the inside of the drain pipe. The filter membrane is installed in the treatment box, and the internal space of the filter membrane is divided into a left half-cavity and a right half-cavity. The drain pipe is connected to the inside of the left half-cavity of the treatment box. The feeding mechanism drives the ceramic parts into the cavity through the feed port of the dust cover. The grinding mechanism and the pressing mechanism work together to grind the ceramic parts. The dust cover prevents dust from overflowing. At the same time, the water spraying mechanism lubricates and removes dust from the ceramic parts. Dust and water enter the left half-cavity of the treatment box through the drain pipe. The filter membrane filters the dust, and the clean water enters the right half-cavity for recycling through the filter membrane.

[0008] Preferably, a rubber water-blocking strip is also provided at the feed inlet of the dust cover; by setting the rubber water-blocking strip, water and dust are prevented from being discharged with the feeding mechanism, the water recycling rate is improved, and dust overflow is prevented. At the same time, rubber has a certain elasticity and wear resistance, which can extend the service life of the feeding mechanism and prevent hard friction between the feeding mechanism and the feed inlet of the dust cover.

[0009] Preferably, the feeding mechanism includes two sets of electric cylinders, a lifting block, a stepper motor, a first reducer, a first drive shaft, and a feeding turntable. Both sets of electric cylinders are mounted on the worktable. The bottom end of the lifting block is connected to the top end of the electric cylinders. The stepper motor is mounted on the worktable. The first reducer is mounted on the worktable, and the output end of the stepper motor is connected to the input end of the first reducer. The first drive shaft is rotatably mounted on the worktable and longitudinally connected to the first reducer. The feeding turntable is mounted on the first drive shaft and has four sets of positioning slots. A conveyor belt transports the ceramic parts to the lifting block. The electric cylinder pushes the lifting block and ceramic part upward, so that the ceramic part enters the positioning groove of the feeding turntable. The stepper motor is started, and the stepper motor drives the first drive shaft to rotate 90° each time through the first reducer. The first drive shaft drives the feeding turntable to rotate 90° each time. The ceramic part enters the waiting position after the first rotation. The ceramic part enters the cavity of the dust cover and is polished by the grinding mechanism and the pressing mechanism after the second rotation. The polished ceramic part is discharged from the cavity after the third rotation and discharged through the discharge port of the worktable under the action of gravity. The fourth rotation returns it to the top of the lifting block.

[0010] Preferably, the polishing mechanism includes a first motor, a second reducer, a second drive shaft, and a first diamond polishing disc. The first motor is mounted on the worktable, the second reducer is mounted on the worktable and the output end of the first motor is connected to the input end of the second reducer, the second drive shaft is rotatably mounted in the cavity of the dust cover and longitudinally connected to the second reducer, and the first diamond polishing disc is mounted on the second drive shaft. When the first motor is started, the first motor drives the second drive shaft to rotate through the second reducer, and the second drive shaft drives the first diamond polishing disc to rotate to polish the lower surface of the ceramic part.

[0011] Preferably, the pressing mechanism includes two sets of guide rods, two sets of cylinders, a connecting plate, a second motor, and a second diamond grinding disc. Both sets of guide rods are installed inside the cavity of the dust cover, and both sets of cylinders are installed at the top of the cavity of the dust cover. The connecting plate is slidably installed on the two sets of guide rods, and the top of the connecting plate is connected to the bottom of the two sets of cylinders. The bottom of the second motor is connected to the top of the connecting plate, and the second diamond grinding disc is installed on the second motor. The two sets of cylinders push the connecting plate to slide downwards along the two sets of guide rods, so that the second diamond grinding disc presses down on the ceramic part, facilitating the contact between the lower surface of the ceramic part and the first diamond grinding disc, and the contact between the second diamond grinding disc and the upper surface of the ceramic part. Then, the second motor is started to drive the second diamond grinding disc to rotate and grind the upper surface of the ceramic part.

[0012] Preferably, the water spraying mechanism includes a water pump, an inlet pipe, a valve, a return pipe, a check valve, a water delivery hose, and two sets of spray heads. The water pump is mounted on a dust cover, the inlet pipe is mounted on the water pump, the valve is mounted on the inlet pipe, the return pipe is connected to the inside of the inlet pipe and to the inside of the right half of the treatment tank, the check valve is mounted on the return pipe, the water delivery hose is mounted on the water pump, and both sets of spray heads are mounted on a connecting plate and connected to the inside of the water delivery hose. The inlet pipe is connected to a water source, the inlet pipe is opened, and the water pump is started. The water pump draws water through the inlet pipe and delivers clean water to the two sets of spray heads through the water delivery hose. The two sets of spray heads spray clean water to rinse the ceramic parts, while preventing dust from overflowing. At the same time, the filtered clean water in the treatment tank is drawn out by the water pump through the return pipe for reuse, saving water resources. The check valve prevents water in the inlet pipe from entering the treatment tank.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the conveyor belt drives the ceramic parts to the feeding mechanism, the feeding mechanism drives the ceramic parts to move between the grinding mechanism and the pressing mechanism, the pressing mechanism presses down on the ceramic parts, and the grinding mechanism and the pressing mechanism work together to grind the upper and lower surfaces of the ceramic parts. During the grinding process, the water spraying mechanism sprays water, which can not only avoid dust, but also lubricate the ceramic parts and enhance the grinding effect. Attached Figure Description

[0014] Figure 1 This is a cross-sectional axonometric structural schematic diagram of this utility model;

[0015] Figure 2 This is a cross-sectional isometric structural diagram of the water treatment mechanism and grinding mechanism of this utility model;

[0016] Figure 3 This is a partially enlarged cross-sectional isometric structural diagram of the feeding mechanism of this utility model;

[0017] Figure 4 This is a cross-sectional isometric structural diagram of the pressing mechanism and the water spraying mechanism of this utility model;

[0018] Figure 5 This is an isometric structural diagram of the water spray mechanism of this utility model.

[0019] The attached diagram is labeled as follows: 01, Water treatment mechanism; 11, Workbench; 12, Dust cover; 13, Display screen; 14, Drain pipe; 15, Treatment box; 16, Filter membrane; 02, Feeding mechanism; 21, Electric cylinder; 22, Lifting block; 23, Stepper motor; 24, First reducer; 25, First drive shaft; 26, Feeding turntable; 03, Grinding mechanism; 31, First motor; 32, Second reducer; 33, Second drive shaft; 34, First diamond grinding disc; 04, Pressing mechanism; 41, Guide rod; 42, Cylinder; 43, Connecting plate; 44, Second motor; 45, Second diamond grinding disc; 05, Water spraying mechanism; 51, Water pump; 52, Inlet pipe; 53, Valve; 54, Return pipe; 55, Check valve; 56, Water supply hose; 57, Spray head. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0021] This utility model discloses a diamond polishing device for grinding ceramic parts, comprising a water treatment mechanism 01; it also includes a feeding mechanism 02, a grinding mechanism 03, a pressing mechanism 04, and a water spraying mechanism 05. The feeding mechanism 02 is installed on the water treatment mechanism 01 and drives the ceramic parts to be loaded and unloaded. The grinding mechanism 03 is installed on the water treatment mechanism 01 and grinds the lower surface of the ceramic parts. The pressing mechanism 04 is installed on the water treatment mechanism 01 and grinds the upper surface of the ceramic parts. The water spraying mechanism 05 is installed on the pressing mechanism 04 and rinses the ceramic parts. The water treatment mechanism 01 includes a workbench 11, a dust cover 12, a display screen 13, a drain pipe 14, a treatment box 15, and a filter membrane 16. The bottom end of the workbench 11 is connected to the ground. The workbench 11 has a discharge port, the bottom of the dust cover 12 is connected to the top of the workbench 11, the dust cover 12 has an internal cavity, the dust cover 12 has a feed port, the top of the drain pipe 14 is connected to the bottom of the dust cover 12, the processing box 15 is installed on the workbench 11 and is connected to the inside of the drain pipe 14, the filter membrane 16 is installed in the processing box 15 and the internal space of the filter membrane 16 is divided into a left half cavity and a right half cavity, the drain pipe 14 is connected to the inside of the left half cavity of the processing box 15; it also includes a rubber water baffle strip at the feed port of the dust cover 12; the feeding mechanism 02 includes two sets of electric cylinders 21, a lifting block 22, a stepper motor 23, a first reducer 24, a first transmission shaft 25 and a feeding turntable 26, both sets of electric cylinders 21 are installed Mounted on the worktable 11, the bottom end of the lifting block 22 is connected to the top end of the electric cylinder 21. A stepper motor 23 is mounted on the worktable 11. A first reducer 24 is mounted on the worktable 11, and the output end of the stepper motor 23 is connected to the input end of the first reducer 24. A first drive shaft 25 is rotatably mounted on the worktable 11 and longitudinally connected to the first reducer 24. A feeding turntable 26 is mounted on the first drive shaft 25, and four sets of positioning slots are provided on the feeding turntable 26. The grinding mechanism 03 includes a first motor 31, a second reducer 32, a second drive shaft 33, and a first diamond grinding disc 34. The first motor 31 is mounted on the worktable 11, the second reducer 32 is mounted on the worktable 11, and the output end of the first motor 31 is connected to the input end of the first reducer 24. The input end of the second reducer 32 is connected, the second drive shaft 33 is rotatably installed in the cavity of the dust cover 12 and longitudinally connected to the second reducer 32, and the first diamond grinding disc 34 is installed on the second drive shaft 33; the pressing mechanism 04 includes two sets of guide rods 41, two sets of cylinders 42, a connecting plate 43, a second motor 44 and a second diamond grinding disc 45. Both sets of guide rods 41 are installed in the cavity of the dust cover 12, both sets of cylinders 42 are installed at the top inside the cavity of the dust cover 12, the connecting plate 43 is slidably installed on the two sets of guide rods 41 and the top of the connecting plate 43 is connected to the bottom of the two sets of cylinders 42, the bottom of the second motor 44 is connected to the top of the connecting plate 43, and the second diamond grinding disc 45 is installed on the second motor 44;During operation, the conveyor belt first transports the ceramic parts to the lifting block 22. Two sets of electric cylinders 21 push the lifting block 22 and the ceramic parts upward, causing the ceramic parts to enter the positioning slot of the feeding turntable 26. The stepper motor 23 is then started. The stepper motor 23 drives the first drive shaft 25 to rotate 90° each time via the first reducer 24. The first drive shaft 25 drives the feeding turntable 26 to rotate 90° each time. During the first rotation, the ceramic parts enter the waiting position; during the second rotation, the ceramic parts enter the cavity of the dust cover 12. The two sets of pneumatic cylinders... Cylinder 42 pushes connecting plate 43 to slide downward along two sets of guide rods 41, causing the second diamond grinding disc 45 to press down on the ceramic part, facilitating contact between the lower surface of the ceramic part and the first diamond grinding disc 34, and between the second diamond grinding disc 45 and the upper surface of the ceramic part. Then, the second motor 44 is started to drive the second diamond grinding disc 45 to rotate and grind the upper surface of the ceramic part. The two sets of cylinders 42 push connecting plate 43 to slide downward along two sets of guide rods 41, causing the second diamond grinding disc 45 to press down on the ceramic part, facilitating contact between the lower surface of the ceramic part and the upper surface of the ceramic part. The surface of the ceramic part is in contact with the first diamond grinding disc 34, and the second diamond grinding disc 45 is in contact with the upper surface of the ceramic part. Then, the second motor 44 is started to drive the second diamond grinding disc 45 to rotate and grind the upper surface of the ceramic part. A dust cover 12 is set to prevent dust from overflowing. At the same time, the water spraying mechanism 05 lubricates and removes dust from the ceramic part. Dust and water enter the left half of the processing box 15 through the drain pipe 14. The filter membrane 16 filters the dust, and the clean water enters the right half of the processing box for recycling through the filter membrane 16. By setting rubber water-blocking strips, water and dust are prevented from being discharged with the feeding turntable 26, improving water recycling rate and preventing dust overflow. Meanwhile, the elasticity and wear resistance of rubber extend the service life of the feeding turntable 26 and prevent hard friction between the feeding turntable 26 and the feed inlet of the dust cover 12. After grinding, the third rotation drives the polished ceramic parts out of the cavity and out through the discharge port of the worktable 11 under gravity. The fourth rotation returns it to the top of the lifting block 22. Example 2

[0022] like Figures 1 to 5As shown, this utility model discloses a diamond polishing device for grinding ceramic parts, based on embodiment 1. The water spraying mechanism 05 includes a water pump 51, an inlet pipe 52, a valve 53, a return pipe 54, a check valve 55, a water supply hose 56, and two sets of spray heads 57. The water pump 51 is mounted on the dust cover 12, the inlet pipe 52 is mounted on the water pump 51, the valve 53 is mounted on the inlet pipe 52, the return pipe 54 is connected to the inside of the inlet pipe 52 and is connected to the inside of the right half cavity of the processing box 15, the check valve 55 is mounted on the return pipe 54, the water supply hose 56 is mounted on the water pump 51, and both sets of spray heads 57 are mounted on the connecting plate 43 and are connected to the inside of the water supply hose 56.During operation, the conveyor belt first transports the ceramic part to the lifting block 22. Two sets of electric cylinders 21 push the lifting block 22 and the ceramic part upward, causing the ceramic part to enter the positioning slot of the loading turntable 26. The stepper motor 23 is started, and the stepper motor 23 drives the first drive shaft 25 to rotate 90° each time through the first reducer 24. The first drive shaft 25 drives the loading turntable 26 to rotate 90° each time. After the first rotation, the ceramic part enters the waiting position. After the second rotation, the ceramic part enters the cavity of the dust cover 12. Two sets of cylinders 42 push the connecting plate 43 to slide downward along the two sets of guide rods 41, causing the second diamond grinding disc 45 to press down. The ceramic part is positioned so that its lower surface contacts the first diamond grinding disc 34, and the second diamond grinding disc 45 contacts the upper surface of the ceramic part. Then, the second motor 44 is activated to rotate the second diamond grinding disc 45 to grind the upper surface of the ceramic part. Two sets of cylinders 42 push the connecting plate 43 downwards along the two sets of guide rods 41, causing the second diamond grinding disc 45 to press down on the ceramic part, facilitating contact between the lower surface of the ceramic part and the first diamond grinding disc 34, and between the second diamond grinding disc 45 and the upper surface of the ceramic part. Then, the second motor 44 is activated to rotate the second diamond grinding disc 45 to grind the upper surface of the ceramic part. By installing a dust cover 12 to prevent dust from overflowing, and connecting the water inlet pipe 52 to a water source, opening the water inlet pipe 52 and starting the water pump 51, the water pump 51 draws water through the water inlet pipe 52 and delivers clean water through the water delivery hose 56 to two sets of spray heads 57. The two sets of spray heads 57 spray clean water to rinse the ceramic parts, while preventing dust from overflowing. At the same time, the filtered clean water in the treatment tank 15 is drawn out by the water pump 51 through the return pipe 54 for reuse, saving water resources. By installing a check valve 55, water in the water inlet pipe 52 is prevented from entering the treatment tank 15. Dust and water enter the left half of the treatment tank 15 through the drain pipe 14. Inside the cavity, the filter membrane 16 filters the dust, and clean water enters the right half of the cavity for recycling through the filter membrane 16. A rubber water-blocking strip prevents water and dust from being discharged with the feeding turntable 26, improving water recycling efficiency and preventing dust overflow. Simultaneously, the rubber's elasticity and wear resistance extend the service life of the feeding turntable 26 and prevent hard friction between the feeding turntable 26 and the inlet of the dust cover 12. After grinding, the third rotation drives the polished ceramic parts out of the cavity and out through the discharge port of the worktable 11 under gravity. The fourth rotation returns it to above the lifting block 22.

[0023] The stepper motor 23, the first reducer 24, the first motor 31, the second reducer 32, the second motor 44, and the water pump 51 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A diamond polishing device for grinding ceramic parts, comprising a water treatment mechanism (01); characterized in that, It also includes a feeding mechanism (02), a grinding mechanism (03), a pressing mechanism (04), and a water spraying mechanism (05). The feeding mechanism (02) is installed on the water treatment mechanism (01) and drives the ceramic parts to be fed and unloaded. The grinding mechanism (03) is installed on the water treatment mechanism (01) and grinds the lower surface of the ceramic parts. The pressing mechanism (04) is installed on the water treatment mechanism (01) and grinds the upper surface of the ceramic parts. The water spraying mechanism (05) is installed on the pressing mechanism (04) and rinses the ceramic parts.

2. The diamond polishing equipment for grinding ceramic parts as described in claim 1, characterized in that, The water treatment unit (01) includes a workbench (11), a dust cover (12), a display screen (13), a drain pipe (14), a treatment box (15), and a filter membrane (16). The bottom of the workbench (11) is connected to the ground, and a discharge port is opened on the workbench (11). The bottom of the dust cover (12) is connected to the top of the workbench (11). A cavity is provided inside the dust cover (12). A feed port is opened on the dust cover (12). The top of the drain pipe (14) is connected to the bottom of the dust cover (12). The treatment box (15) is installed on the workbench (11) and is connected to the inside of the drain pipe (14). The filter membrane (16) is installed inside the treatment box (15) and the internal space of the filter membrane (16) is divided into a left half cavity and a right half cavity. The drain pipe (14) is connected to the inside of the left half cavity of the treatment box (15).

3. The diamond polishing equipment for grinding ceramic parts as described in claim 2, characterized in that, It also includes a dust cover (12) with a rubber water-blocking strip at the feed inlet.

4. The diamond polishing equipment for grinding ceramic parts as described in claim 2, characterized in that, The feeding mechanism (02) includes two sets of electric cylinders (21), a lifting block (22), a stepper motor (23), a first reducer (24), a first drive shaft (25), and a feeding turntable (26). Both sets of electric cylinders (21) are installed on the workbench (11). The bottom end of the lifting block (22) is connected to the top end of the electric cylinder (21). The stepper motor (23) is installed on the workbench (11). The first reducer (24) is installed on the workbench (11), and the output end of the stepper motor (23) is connected to the input end of the first reducer (24). The first drive shaft (25) is rotatably installed on the workbench (11) and longitudinally connected to the first reducer (24). The feeding turntable (26) is installed on the first drive shaft (25), and four sets of positioning slots are opened on the feeding turntable (26).

5. A diamond polishing device for grinding ceramic parts as described in claim 4, characterized in that, The grinding mechanism (03) includes a first motor (31), a second reducer (32), a second drive shaft (33), and a first diamond grinding disc (34). The first motor (31) is mounted on the worktable (11), the second reducer (32) is mounted on the worktable (11), and the output end of the first motor (31) is connected to the input end of the second reducer (32). The second drive shaft (33) is rotatably mounted in the cavity of the dust cover (12) and longitudinally connected to the second reducer (32). The first diamond grinding disc (34) is mounted on the second drive shaft (33).

6. The diamond polishing equipment for grinding ceramic parts as described in claim 5, characterized in that, The pressing mechanism (04) includes two sets of guide rods (41), two sets of cylinders (42), a connecting plate (43), a second motor (44), and a second diamond grinding disc (45). The two sets of guide rods (41) are installed in the cavity of the dust cover (12). The two sets of cylinders (42) are installed at the top of the cavity of the dust cover (12). The connecting plate (43) is slidably installed on the two sets of guide rods (41) and the top of the connecting plate (43) is connected to the bottom of the two sets of cylinders (42). The bottom of the second motor (44) is connected to the top of the connecting plate (43). The second diamond grinding disc (45) is installed on the second motor (44).

7. A diamond polishing device for grinding ceramic parts as described in claim 6, characterized in that, The water spraying mechanism (05) includes a water pump (51), an inlet pipe (52), a valve (53), a return pipe (54), a check valve (55), a water supply hose (56), and two sets of spray heads (57). The water pump (51) is installed on the dust cover (12), the inlet pipe (52) is installed on the water pump (51), the valve (53) is installed on the inlet pipe (52), the return pipe (54) is connected to the inside of the inlet pipe (52) and is connected to the inside of the right half cavity of the treatment box (15), the check valve (55) is installed on the return pipe (54), the water supply hose (56) is installed on the water pump (51), and the two sets of spray heads (57) are both installed on the connecting plate (43) and are connected to the inside of the water supply hose (56).

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