Household garbage screening and classifying device

Abstract

The invention discloses a household garbage screening and classifying device, and relates to the technical field of household garbage, the household garbage screening and classifying device comprises a fixed mounting table frame, the left side of the interior of the fixed mounting table frame is provided with a first settling box capable of performing oil-water separation on liquid, and the right side of the interior of the fixed mounting table frame is provided with a first filtering frame capable of screening solids; a spiral conveying rod capable of stably conveying garbage is arranged on the inner side of the conveying frame. The kitchen waste screening and classifying device solves the problems that most conventional kitchen waste screening and classifying devices are in solid-liquid separation, but metal waste possibly remains in solid waste, chemical corrosion is caused by long-time concentrated storage, a large amount of poisonous gas is generated, metal waste and non-metal waste in the solid waste cannot be separated and classified, and meanwhile, the solid waste and the non-metal waste cannot be separated and classified. The problems that when liquid garbage is filtered, grease in liquid cannot be separated due to the environment and generation reasons of the kitchen garbage, and gas pollution or equipment oil immersion damage is caused are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of domestic waste, and particularly relates to a domestic waste screening and classification device. Background Art

[0002] With the improvement of people's material living quality, the output of domestic waste is increasing rapidly. The variety of domestic waste makes the collection and sorting time-consuming and laborious. Among them, in daily life, kitchen waste is the domestic waste with the largest proportion. When there is too much kitchen waste in the community, the community can screen and classify the residents' kitchen waste in time to improve the living environment of the residents. In the process of treating kitchen waste, a screening and classification device is needed.

[0003] Compared with the existing screening and classification devices, the following defects still exist: Conventional kitchen waste screening and classification devices are mostly for solid-liquid separation. However, since there may be residual metal waste in the solid waste, long-term centralized storage will lead to chemical corrosion, resulting in the generation of a large amount of toxic gases, and it is impossible to separate and classify the metal waste and non-metal waste in the solid waste. At the same time, when filtering liquid waste, due to the environment and generation reasons of kitchen waste, the grease in the liquid cannot be separated, causing gas pollution or oil immersion damage to the equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a domestic waste screening and classification device to solve the following technical problems: Conventional kitchen waste screening and classification devices are mostly for solid-liquid separation. However, since there may be residual metal waste in the solid waste, long-term centralized storage will lead to chemical corrosion, resulting in the generation of a large amount of toxic gases, and it is impossible to separate and classify the metal waste and non-metal waste in the solid waste. At the same time, when filtering liquid waste, due to the environment and generation reasons of kitchen waste, the grease in the liquid cannot be separated, causing gas pollution or oil immersion damage to the equipment.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A domestic waste screening and classification device includes: a fixed installation platform frame. A first sedimentation tank for separating oil and water from liquid is arranged on the left side inside the fixed installation platform frame, and a first filter frame for screening solids is arranged on the right side inside the fixed installation platform frame;

[0007] A conveying frame is arranged above the first sedimentation tank. A spiral conveyor for stably conveying waste is arranged inside the conveying frame. A permeation hole is opened on the lower left side of the conveying frame. A first rolling wheel disc is arranged above the conveying frame, and a second rolling wheel disc is arranged above the first rolling wheel disc for directionally feeding waste;

[0008] On the upper left and right sides of the second rolling wheel disc, a first crushing shaft roller and a second crushing shaft roller for crushing garbage are respectively arranged.

[0009] As a further scheme of the present invention: a second sedimentation tank and a third sedimentation tank are respectively arranged on the left side of the first sedimentation tank, and the first sedimentation tank, the second sedimentation tank and the third sedimentation tank are arranged in a stepped manner in sequence;

[0010] Drainage pipes are arranged on the upper left sides of the first sedimentation tank and the second sedimentation tank for draining the oil body.

[0011] As a further scheme of the present invention: a first filter mesh plate is fixedly connected to the inner side of the first filter frame, a second filter frame fixedly connected to a second filter mesh plate is arranged above the first filter frame, and damping springs are arranged at the four corners of the lower ends of the first filter frame and the second filter frame.

[0012] Furthermore, the mesh size of the second filter mesh plate is smaller than the mesh size of the first filter mesh plate for classifying and collecting the screened solid garbage;

[0013] Both the first filter frame and the second filter frame form an elastic telescopic structure on the support bottom plate through damping springs.

[0014] As a further scheme of the present invention: storage cavities are opened inside both the first rolling wheel disc and the second rolling wheel disc, and the width dimension of the storage cavity opened inside the first rolling wheel disc is larger than that of the storage cavity opened inside the second rolling wheel disc for quantitatively receiving garbage.

[0015] As a further scheme of the present invention: the penetration holes are equidistantly opened at the lower left end of the conveying frame for draining the liquid in the garbage, the right end of the conveying frame forms a communication structure with the fixedly installed platform frame through a guiding pipe, and the lower side of the inner surface of the conveying frame is in a fitting setting with the outer surface of the spiral conveying rod.

[0016] As a further scheme of the present invention: tooth discs are fixedly installed at the rear ends of both the first rolling wheel disc and the second rolling wheel disc, and an internal tooth adjusting belt is arranged outside the tooth discs.

[0017] As a further scheme of the present invention: the tooth discs and the internal tooth adjusting belt are connected in a meshing manner, and a protective shell fixedly connected to the shunt treatment box is arranged outside the internal tooth adjusting belt for protecting the tooth discs and the internal tooth adjusting belt.

[0018] As a further solution of the present invention: linkage shaft blocks are arranged at both the front and rear ends of the first crushing shaft roller and the second crushing shaft roller. A first adjusting disk is fixedly connected to the rear end of the linkage shaft block, and a second adjusting disk is arranged on the right side of the first adjusting disk.

[0019] As a further solution of the present invention: the first adjusting disk and the second adjusting disk are connected in a meshing manner, and the linkage shaft blocks are respectively connected to the first crushing shaft roller and the second crushing shaft roller in a clamping manner.

[0020] Beneficial effects of the present invention:

[0021] 1. Through the stepped distribution installation of the first sedimentation tank, the second sedimentation tank and the third sedimentation tank, water and oil can be sedimented, filtered and classified, avoiding the problem of environmental pollution caused by the mixing of water and oil in the later stage. In cooperation, both the first filter frame and the second filter frame form an elastic telescopic movement on the support bottom plate through damping springs, which can screen and filter solid garbage, and classify and collect the screened solid garbage through extension plates with different length dimensions;

[0022] In addition, storage cavities are arranged inside both the first rolling wheel disk and the second rolling wheel disk, which can quantitatively roll and convey the crushed garbage, adsorb the metal components in the garbage and then discharge them. In cooperation with the fitting arrangement between the lower side of the interior of the conveying frame and the screw conveyor, the garbage after solid-liquid separation can be directionally conveyed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the fixed installation table frame and the shunt treatment box of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall sectional structure of the fixed installation table frame and the shunt treatment box of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall exploded structure of the second sedimentation tank and the drainage pipe of the present invention;

[0027] Figure 4 It is a schematic diagram of the overall exploded structure of the first filter frame and the first filter mesh plate of the present invention;

[0028] Figure 5 It is a schematic diagram of the overall structure of the first rolling wheel disk and the second rolling wheel disk of the present invention;

[0029] Figure 6 It is a schematic diagram of the overall exploded structure of the conveying frame and the screw conveyor of the present invention;

[0030] Figure 7 This is a schematic diagram of the overall exploded structure of the tooth disc and the internal tooth adjusting belt of the present invention;

[0031] Figure 8 This is a schematic diagram of the overall exploded structure of the first adjusting disc and the second adjusting disc of the present invention.

[0032] In the figure: 1. Fixed installation table frame; 101. First sedimentation tank; 102. Second sedimentation tank; 103. Third sedimentation tank; 104. Valve type drain pipe; 105. Drainage pipe; 106. First filter frame; 1061. First filter screen plate; 1062. Second filter frame; 1063. Second filter screen plate; 1064. Vibration motor; 1065. Damping spring; 1066. Support bottom plate; 2. Shunt treatment box; 201. First adjusting bolt; 202. First rolling wheel disc; 203. Second rolling wheel disc; 204. Storage cavity; 205. Magnetic separator; 206. Sealing cover plate; 207. Second adjusting bolt; 208. Conveyor frame; 2081. First servo motor; 2082. Screw conveyor rod; 2083. Penetration hole; 2084. Guide pipe; 3. Protective housing; 301. Second servo motor; 302. Tooth disc; 303. Internal tooth adjusting belt; 4. Crushing treatment box; 401. Fourth adjusting bolt; 402. Deflector; 403. Sealing back plate; 4031. Third adjusting bolt; 4032. Third servo motor; 4033. First adjusting disc; 4034. Second adjusting disc; 4035. First crushing shaft roller; 4036. Second crushing shaft roller; 4037. Linkage shaft block; 5. Feeding frame. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] Please refer to Figure 1-8 As shown, the present invention is a domestic waste screening and classification device.

[0035] Embodiment 1

[0036] Please refer to Figure 1 , Figure 2 and Figure 8 In the figure, the present invention provides a technical solution: on the upper left and right sides of the second rolling wheel disc 203, there are respectively arranged a first crushing shaft roller 4035 and a second crushing shaft roller 4036 that can crush garbage;

[0037] Further, linkage shaft blocks 4037 are provided at both the front and rear ends of the first crushing shaft roller 4035 and the second crushing shaft roller 4036. A first adjusting disk 4033 is fixedly connected to the rear end of the linkage shaft block 4037, and a second adjusting disk 4034 is provided on the right side of the first adjusting disk 4033.

[0038] Further, the first adjusting disk 4033 and the second adjusting disk 4034 are connected in a meshing manner, and the linkage shaft blocks 4037 are respectively connected to the first crushing shaft roller 4035 and the second crushing shaft roller 4036 in a snap-fit manner.

[0039] Specifically, domestic waste is put into the crushing treatment box 4 from the feeding frame 5. It is set that both the first adjusting disk 4033 and the second adjusting disk 4034 are fixedly connected to the linkage shaft block 4037, and the first adjusting disk 4033 and the second adjusting disk 4034 are connected in a meshing manner. When the third servo motor 4032 installed on the left side of the rear end of the sealing back plate 403 is turned to rotate the first adjusting disk 4033, the second adjusting disk 4034 can be driven to rotate in the reverse direction. Since the linkage shaft blocks 4037 are respectively connected to the second crushing shaft roller 4036 and the first crushing shaft roller 4035 in a snap-fit manner, and four positioning columns are provided at the inner end of the linkage shaft block 4037, when the first adjusting disk 4033 and the second adjusting disk 4034 rotate, the first crushing shaft roller 4035 and the second crushing shaft roller 4036 can be driven to rotate synchronously, so as to crush the domestic waste under the action of reverse rotation, avoid the phenomenon that most of the garbage is wrapped in garbage bags, resulting in difficult separation of garbage accumulation, and finally the crushed domestic waste can be drained and discharged downward from the diversion plate 402;

[0040] Among them, the crushing treatment box 4 is connected to the shunt treatment box 2 by a threaded connection through the fourth adjusting bolt 401, which is convenient for later unscrewing the fourth adjusting bolt 401 to disassemble the whole crushing treatment box 4, and the inside of the crushing treatment box 4 can be rinsed to avoid garbage residue. In addition, the sealing back plate 403 is connected to the crushing treatment box 4 by a threaded connection through the third adjusting bolt 4031. After a long time of crushing, the outer surfaces of the first crushing shaft roller 4035 and the second crushing shaft roller 4036 may be worn. At this time, after the first crushing shaft roller 4035 and the second crushing shaft roller 4036 are respectively removed from the linkage shaft block 4037, the first crushing shaft roller 4035 and the second crushing shaft roller 4036 can be repaired or replaced separately.

[0041] Embodiment 2

[0042] Please refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6In this, the present invention provides a technical solution: Above the first precipitation tank 101, a conveying frame 208 is provided. Inside the conveying frame 208, a spiral conveying rod 2082 capable of stably conveying garbage is provided. On the lower left side of the left end of the conveying frame 208, a penetration hole 2083 is opened. Above the conveying frame 208, a first rolling wheel disc 202 is provided. Above the first rolling wheel disc 202, a second rolling wheel disc 203 is provided for directionally feeding the garbage.

[0043] Furthermore, storage cavities 204 are opened inside both the first rolling wheel disc 202 and the second rolling wheel disc 203. The width dimension of the storage cavity 204 opened inside the first rolling wheel disc 202 is larger than that of the storage cavity 204 opened inside the second rolling wheel disc 203, for quantitatively receiving the garbage.

[0044] Furthermore, the penetration holes 2083 are equidistantly opened on the lower left side of the left end of the conveying frame 208 for draining the liquid in the garbage. The right end of the conveying frame 208 and the fixed installation platform frame 1 form a communication structure through a guide pipe 2084. The lower side of the inner surface of the conveying frame 208 and the outer surface of the spiral conveying rod 2082 are in a fitting arrangement.

[0045] Furthermore, a toothed disc 302 is fixedly installed at the rear end of both the first rolling wheel disc 202 and the second rolling wheel disc 203. An internal tooth adjusting belt 303 is provided on the outside of the toothed disc 302.

[0046] Specifically, in combination with the first embodiment, after the domestic waste is crushed by the reverse rotation of the first crushing shaft roller 4035 and the second crushing shaft roller 4036, it will fall into the storage cavity 204 opened inside the second rolling wheel disc 203 through the deflector plate 402. The toothed disc 302 and the internal tooth adjusting belt 303 are connected in a meshing manner. When the second servo motor 301 is turned on to rotate the toothed disc 302, it will drive the internal tooth adjusting belt 303 to rotate synchronously. Thus, by the meshing connection between the internal tooth adjusting belt 303 and the toothed disc 302, the first rolling wheel disc 202 and the second rolling wheel disc 203 fixedly connected to the front end of the toothed disc 302 are driven to rotate synchronously in the same direction, so that the rotation speeds of the first rolling wheel disc 202 and the second rolling wheel disc 203 are equal, and the toothed disc 302 and the internal tooth adjusting belt 303 can be protected by the protective housing 3 to avoid damage caused by external factors. Since the size of the storage cavity 204 opened inside the first rolling wheel disc 202 is smaller than the size of the storage cavity 204 opened inside the second rolling wheel disc 203, when the second rolling wheel disc 203 rotates to the right, the storage cavities 204 of the two correspond to each other. When the storage cavity 204 inside the second rolling wheel disc 203 rotates the crushed domestic waste to the lower right side, at this time, the storage cavity 204 inside the first rolling wheel disc 202 just aligns with the storage cavity 204 inside the first rolling wheel disc 202. After the domestic waste is received and rotated, it finally falls into the conveying frame 208;

[0047] Among them, both the first rolling wheel disc 202 and the second rolling wheel disc 203 are made of permanent magnets. When the crushed domestic waste enters the storage cavity 204 opened inside the first rolling wheel disc 202 and the second rolling wheel disc 203, under the action of the permanent magnet structure, the metal waste contained in the domestic waste can be adsorbed. When the first rolling wheel disc 202 rotates to the lower side and discharges the remaining non-metal waste, the metal waste will be adsorbed in the storage cavity 204 inside the first rolling wheel disc 202. When it continues to rotate, the first rolling wheel disc 202 drives the metal waste to pass through the left side inside the shunt treatment box 2. The metal waste inside the first rolling wheel disc 202 is adsorbed through the magnetic field change by the magnetic separator 205. Finally, the second adjustment bolt 207 is unscrewed and the sealing cover plate 206 is removed, and then the metal waste can be taken. Through the magnetic separation device, the metal and non-metal substances in the domestic waste can be classified and screened. The shunt treatment box 2 is threadedly connected to the fixed installation platform frame 1 through the first adjustment bolt 201, which is convenient for later separate disassembly of the shunt treatment box 2 for maintenance, cleaning or replacement operations. Among them, the model of the magnetic separator 205 is CTB-1230.

[0048] Embodiment Three

[0049] Please refer to Figure 2 、 Figure 3 、Figure 4 and Figure 7 In Figure 7 , the present invention provides a technical solution: a fixed installation table frame 1 is provided. On the left side inside the fixed installation table frame 1, there is a first sedimentation tank 101 capable of separating oil and water from liquid, and on the right side inside the fixed installation table frame 1, there is a first filtering frame 106 capable of screening solids.

[0050] Furthermore, a second sedimentation tank 102 and a third sedimentation tank 103 are respectively arranged on the left side of the first sedimentation tank 101, and the first sedimentation tank 101, the second sedimentation tank 102, and the third sedimentation tank 103 are arranged in a stepped manner in sequence.

[0051] On the upper side of the left ends of both the first sedimentation tank 101 and the second sedimentation tank 102, there is a drainage pipe 105 for draining the oil.

[0052] Furthermore, a first filter screen plate 1061 is fixedly connected to the inside of the first filtering frame 106. Above the first filtering frame 106, there is a second filtering frame 1062 fixedly connected to a second filter screen plate 1063. At the four corners of the lower ends of the first filtering frame 106 and the second filtering frame 1062, there are damping springs 1065.

[0053] Furthermore, the mesh size of the second filter screen plate 1063 is smaller than the mesh size of the first filter screen plate 1061, for classifying and collecting the screened solid waste.

[0054] Both the first filtering frame 106 and the second filtering frame 1062 form an elastic telescopic structure on the support bottom plate 1066 through the damping springs 1065.

[0055] Specifically, in combination with Embodiment 1 and Embodiment 2, after the separation of metal objects and non - metal objects in domestic waste, the non - metal waste will be centrally discharged into the conveying frame 208. Through the permeation holes 2083 equidistantly arranged on the lower left side of the conveying frame 208, the liquid contained in the domestic waste can be filtered and leaked, achieving the solid - liquid separation of the domestic waste. At this time, the liquid waste will enter the first sedimentation tank 101. The first sedimentation tank 101, the second sedimentation tank 102, and the third sedimentation tank 103 are installed in a stepped manner on the left side inside the fixed installation table frame 1. With the precipitation over time, the water and oil in the liquid waste can be separated. Since the density of oil is greater than that of water, the oil will float on the upper surface of the water, and then be guided into the second sedimentation tank 102 and the third sedimentation tank 103 through the drainage pipe 105. Finally, open the valve - type drain pipe 104 to drain the water in the first sedimentation tank 101, the second sedimentation tank 102, and the third sedimentation tank 103, and finally drain and separate the floating oil.

[0056] Meanwhile, after the conveying frame 208 separates domestic waste into solid and liquid, the first servo motor 2081 is turned on to rotate the screw conveyor rod 2082. Since the outer surface of the screw conveyor rod 2082 is fitted with the lower side inside the conveying frame 208, it can convey the solid waste after removing the liquid to the right. Finally, it is centrally discharged into the second filter box 1062 through the guide pipe 2084. The inside of the second filter box 1062 is arranged in an inclined manner from left to right, and the second filter box 1062 is elastically telescoped on the support bottom plate 1066 through the damping spring 1065. When the vibration motor 1064 is turned on, the second filter box 1062 can vibrate and screen the solid waste through the second filter mesh plate 1063 arranged inside. Since the length of the extension plate at the right end of the second filter box 1062 is larger than that of the extension plate at the right end of the first filter box 106, after the solid waste is screened and filtered, it will fall into different collection boxes through the extension plates with different lengths, so as to achieve the function of classifying and collecting solid waste;

[0057] Among them, before this operation, collection boxes need to be placed directly below the first filter box 106, directly below the extension plate at the right end of the first filter box 106, and directly below the extension plate at the right end of the second filter box 1062. Collection boxes also need to be placed directly below the first sedimentation tank 101, the second sedimentation tank 102, and the third sedimentation tank 103 for subsequent use.

[0058] The above has described an embodiment of the present invention in detail, but the content is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A domestic waste screening and classification device, characterized in that, Including: A fixed installation table frame (1), a first sedimentation tank (101) capable of separating oil and water from liquid is arranged on the left side inside the fixed installation table frame (1), and a first filter frame (106) capable of screening solids is arranged on the right side inside the fixed installation table frame (1); Above the first sedimentation tank (101), there is a conveying frame (208). Inside the conveying frame (208), there is a spiral conveying rod (2082) capable of stably conveying garbage. An infiltration hole (2083) is opened on the lower left side of the left end of the conveying frame (208). Above the conveying frame (208), there is a first rolling wheel disc (202), and above the first rolling wheel disc (202), there is a second rolling wheel disc (203) for directionally feeding garbage; On the upper left and right sides above the second rolling wheel disc (203), there are respectively a first crushing shaft roller (4035) and a second crushing shaft roller (4036) capable of crushing garbage.

2. The screening and classification device for domestic waste according to claim 1, wherein On the left side of the first sedimentation tank (101), there are respectively a second sedimentation tank (102) and a third sedimentation tank (103). The first sedimentation tank (101), the second sedimentation tank (102), and the third sedimentation tank (103) are arranged in a stepped manner in sequence; On the upper left sides of the left ends of the first sedimentation tank (101) and the second sedimentation tank (102), there are drainage pipes (105) for draining oil.

3. The domestic waste screening and classification device according to claim 2, characterized in that, The right end of the first filter frame (106) is fixedly connected to a first filter mesh plate (1061). Above the first filter frame (106), there is a second filter frame (1062) fixedly connected to a second filter mesh plate (1063). At the four corners of the lower ends of the first filter frame (106) and the second filter frame (1062), there are damping springs (1065).

4. The domestic waste screening and classification device according to claim 3, wherein The length dimension of the second filter mesh plate (1063) is larger than the length dimension of the first filter mesh plate (1061) for classifying and collecting the screened solid garbage; Both the first filter frame (106) and the second filter frame (1062) form an elastic telescopic structure on the support bottom plate (1066) through the damping springs (1065).

5. The domestic waste screening and classification device according to claim 1, characterized in that Storage cavities (204) are opened inside both the first rolling wheel disc (202) and the second rolling wheel disc (203). The width dimension of the storage cavity (204) opened inside the first rolling wheel disc (202) is larger than that of the storage cavity (204) opened inside the second rolling wheel disc (203) for quantitatively receiving garbage.

6. The domestic waste screening and classification device according to claim 5, wherein The infiltration holes (2083) are equidistantly opened on the lower left side of the left end of the conveying frame (208) for draining the liquid in the garbage. The right end of the conveying frame (208) forms a communicating structure with the fixed installation table frame (1) through a guiding pipe (2084). The lower side of the inner surface of the conveying frame (208) is in a fitting setting with the outer surface of the spiral conveying rod (2082).

7. The domestic waste screening and classification device according to claim 5, characterized in that, A toothed disc (302) is fixedly installed at the rear end of each of the first rolling wheel disc (202) and the second rolling wheel disc (203), and an internal tooth adjusting belt (303) is arranged outside the toothed disc (302).

8. The domestic waste screening and classification device according to claim 7, characterized in that, The toothed disc (302) is connected to the internal tooth adjusting belt (303) in a meshing manner, and a protective housing (3) fixedly connected to the flow splitting treatment box (2) is arranged outside the internal tooth adjusting belt (303) for protecting the toothed disc (302) and the internal tooth adjusting belt (303).

9. The domestic waste screening and classification device according to claim 1, characterized in that, Linkage shaft blocks (4037) are arranged at the front and rear ends of each of the first crushing shaft roller (4035) and the second crushing shaft roller (4036). A first adjusting disc (4033) is fixedly connected to the rear end of the linkage shaft block (4037), and a second adjusting disc (4034) is arranged on the right side of the first adjusting disc (4033).

10. A domestic waste screening and classification device according to claim 9, characterized in that, The first adjusting disc (4033) is connected to the second adjusting disc (4034) in a meshing manner, and the linkage shaft block (4037) is respectively engaged with the first crushing shaft roller (4035) and the second crushing shaft roller (4036).

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