Vertical tube chain conveyor tail

Abstract

The utility model discloses a vertical pipe chain conveyor tail, the side wall upper portion of machine tail casing is connected with the return pipeline interface, and the lower part is connected with the conveying pipeline interface, and the rear end is equipped with the tail end plate, and the chain wheel axle system and the tension support subassembly are equipped in the machine tail casing, the tension support subassembly is connected through the guide rail of setting in the two sides of machine tail casing inner wall, the chain wheel axle system is fixed on the tension support subassembly, the outer wall of tail end plate is equipped with the cylinder, and the piston rod of cylinder passes through the tail end plate and is connected with the tension support subassembly, the rear side of chain wheel is equipped with the arc guide slot, and the arc guide slot is fixed on the tension support subassembly, and the arc bottom is compatible with the outer edge track of disc piece when turning in the tail, the vertical pipe chain conveyor tail can guarantee the tail clean, and there is no material residue, and the motion is stable and safe, and is not easy to take place the chain.

Description

Technical Field

[0001] This utility model relates to a tubular chain conveyor, and more particularly to a tail section of a vertical tubular chain conveyor, belonging to the technical field of conveying equipment. Background Technology

[0002] Tubular chain conveyors, as general-purpose equipment in the food, grain and oil, and feed industries, play a crucial role in food processing, grain and oil processing, and feed processing. With the continuous improvement of people's living standards, there is increasing attention paid to hygiene in these industries, especially in all aspects of food and grain and oil processing, as this is closely related to human health. How to make the equipment more hygienic and environmentally friendly, easier to operate and maintain, and more intelligent and clean has become a new research direction for major equipment manufacturers. Tubular chains that rotate in a horizontal plane are called horizontal tubular chains, while those that rotate in a vertical plane are called vertical tubular chains.

[0003] The following problems at the tail of existing vertical tubular chain conveyors are becoming increasingly prominent: 1. During the conveying process, the fine powder adsorbed on the discs and ring chains is easy to fall off and remain at the tail end of the machine. Long-term accumulation may lead to mold and contamination of materials. However, the existing cleaning methods rely on manual labor, which is inefficient. 2. Traditional chain tensioning methods (such as screw or spring tensioning) reduce tension after the chain links elongate, which can easily lead to chain derailment. 3. The lack of a reliable alarm mechanism when the chain breaks or derails makes it easy for the equipment to continue operating and cause further damage.

[0004] Therefore, there is an urgent need for a tail structure that can automatically clean up residues, stabilize tension, and have a reliable alarm function. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems existing in the above and / or prior art, this utility model is proposed.

[0007] The purpose of this invention is to overcome the problems existing in the prior art and provide a vertical tubular chain conveyor tail that can ensure the tail is clean, free of material residue, and has stable and safe movement, and is not prone to chain derailment.

[0008] To solve the above technical problems, this utility model provides a tail section of a vertical tubular chain conveyor, including a tail housing. A return pipe interface is connected to the upper part of the side wall facing the head of the tail housing, and a conveying pipe interface is connected to the lower part. A tail end plate is provided at the rear end. A sprocket shaft system and a tensioning bracket assembly are provided inside the tail housing. The tensioning bracket assembly is slidably connected via guide rails disposed on both sides of the inner wall of the tail housing. The sprocket shaft system is fixed to the tensioning bracket assembly. A cylinder is installed on the outer wall of the tail end plate, and the piston rod of the cylinder passes through the tail end plate and connects to the tensioning bracket assembly. An arc-shaped guide groove is provided on the rear side of the sprocket, and the arc-shaped guide groove is fixed to the tensioning bracket assembly. Its arc-shaped bottom is adapted to the outer edge trajectory of the disc when the tail section turns.

[0009] Furthermore, the tensioning bracket assembly includes a front slider, a slider connecting plate, a cylinder connecting plate, and a rear slider; a front slider and a rear slider are respectively installed on both sides of the tensioning bracket assembly, the front slider and the rear slider on the same side are connected by the slider connecting plate, and the rear sliders on both sides are connected by the cylinder connecting plate; the outer walls of the front slider and the rear slider are provided with slider grooves with outward openings, and the slider grooves slide in cooperation with the corresponding guide rails.

[0010] Furthermore, the sprocket shaft system includes a sprocket shaft, a sprocket, a self-aligning ball bearing, a bearing cap, a snap ring, and a skeleton oil seal; the sprocket shaft passes through the central hole of the sprocket, and its two ends are supported by self-aligning ball bearings and axially positioned by snap rings; a bearing cap is provided on the outer side of the self-aligning ball bearing, and a skeleton oil seal is provided between the bearing cap and the sprocket shaft; both ends of the sprocket shaft are fixedly connected to the front slider of the tensioning bracket assembly.

[0011] Furthermore, it also includes a chain derailment alarm device, which includes a sensor bracket mounted on the tensioning bracket assembly, a sensor mounted on the sensor bracket, and a sensor plate adjustment seat and a sensor plate mounted on the tail housing or tail end plate; the position of the sensor plate on the sensor plate adjustment seat is adjustable for alignment with the sensor; when chain derailment or chain breakage occurs, the tensioning bracket assembly moves backward, causing the sensor and the sensor plate to misalign, triggering an alarm signal.

[0012] Furthermore, a pneumatic triplet and a reversing valve are also installed on the outer wall of the tail end plate; the pneumatic triplet and the reversing valve are connected to the cylinder through pipes and are used to filter, regulate the pressure of the cylinder air source and control the air path.

[0013] Furthermore, an inspection door is provided on the top of the tail housing, and an inspection door screen is provided on the inner side of the inspection door.

[0014] Furthermore, the bottom of the tail housing is arc-shaped to match the shape of the lower half of the disc.

[0015] Furthermore, the tail end plate and the tail housing are connected by a detachable flange.

[0016] Compared to the prior art, the advantages or beneficial effects of the embodiments of this application include at least the following: 1. An arc-shaped guide groove is set on the outer side of the tail sprocket. The shape of the guide groove is close to the running trajectory of the disc, so that the adsorbed material on the disc and chain returns to the conveying system along the guide groove, realizing automatic cleaning of the material at the tail and avoiding residue and contamination; the upper opening of the guide groove adopts an outward-turned design to prevent the disc from scratching. 2. The sprocket bearing is built into the sprocket cavity, saving space and eliminating the need for a separate bearing seat; a slider is installed at each end of the sprocket shaft, and an additional slider is added on each side of the connection between the tension bracket and the cylinder push rod. A guide rail is set on each side of the housing, and the slider groove is locked on the guide rail, making the sprocket slide more smoothly and preventing jamming. This ensures stable chain tension, smooth sliding, and prevents chain derailment. 3. The tail end plate adopts flange connection. When the sprocket and bearing need maintenance, the tail end plate can be disassembled, and the sprocket shaft system and tension bracket can slide out from the tail together, which improves the convenience of maintenance. The modular design is suitable for industries with high hygiene requirements such as food and grain and oil. 4. The tail section uses a cylinder to tension the chain and has a built-in chain derailment alarm device, which can promptly alarm and stop the machine in case of chain breakage or derailment to protect the equipment safety. 5. The inspection door is equipped with a protective screen, and the screen is equipped with bent handles on both sides, making it easier to disassemble and assemble the screen, and the screen is also easy to manufacture. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein: Figure 1 This is a perspective view of the tail section of the vertical tubular chain conveyor of this utility model; Figure 2 This is a front sectional view of the tail section of the vertical tubular chain conveyor of this utility model; Figure 3 This is a top perspective view of the tail section of the vertical tubular chain conveyor of this utility model; Figure 4 This is a left sectional view of the tail section of the vertical tubular chain conveyor of this utility model; Figure 5 This is an exploded view of the tail section of the vertical tubular chain conveyor of this utility model. Figure 6This is an exploded view of the sliding component in this utility model; Attached reference numerals: 1. Return pipe interface; 2. Delivery pipe interface; 3. Inspection door; 4. Reversing valve; 5. Pneumatic triplet; 6. Cylinder; 7. Disc; 8. Chain; 9. Sprocket shaft system; 9a. Sprocket; 9b. Self-aligning ball bearing; 9c. Bearing cap; 9d. Snap ring; 9e. Sprocket shaft; 9f. Oil seal; 10. Guide rail; 11. Tensioning bracket assembly; 11a. Front slider; 11b. Slider connecting plate; 11c. Cylinder connecting plate; 11d. Rear slider; 12. Inspection door screen; 13. Tail housing; 14. Arc-shaped guide groove; 15. Induction plate adjustment seat; 16. Induction plate; 17. Sensor bracket; 18. Tail end plate. Detailed Implementation

[0018] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0019] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] like Figures 1 to 6 As shown, the tail section of the vertical tubular chain conveyor of this utility model includes a tail housing 13. A return pipe interface 1 is connected to the upper part of the side wall of the tail housing 13 facing the head, and a conveying pipe interface 2 is connected to the lower part of the side wall of the tail housing 13 facing the head, for connecting with the tubular chain conveying pipe. A tail end plate 18 is provided at the rear end of the tail housing 13, and a sprocket shaft system 9 is provided within the tail housing 13. An inspection door 3 is provided at the top of the tail housing 13, and an inspection door screen 12 is provided on the inner side of the inspection door 3.

[0022] The sprocket shaft system 9 includes a sprocket 9a, a self-aligning ball bearing 9b, a bearing cap 9c, a retaining ring 9d, and a sprocket shaft 9e. The sprocket shaft 9e passes through the central hole of the sprocket 9a. Both ends of the central hole of the sprocket 9a are supported on the sprocket shaft 9e by the self-aligning ball bearings 9b. The sprocket shaft 9e is provided with a retaining ring groove, and the retaining ring 9d provides axial positioning for the self-aligning ball bearings 9b. Bearing caps 9c are provided on the outer side of the self-aligning ball bearings 9b, and the bearing caps 9c and the sprocket shaft 9e are sealed by a skeleton oil seal 9f.

[0023] The chain 8 enters the tail housing 13 from the conveying pipe interface 2, turns after passing the sprocket 9a, and leaves the tail housing 13 from the return pipe interface 1 to move towards the head of the machine; multiple discs 7 are evenly fixed along the entire circumference of the chain 8 to convey materials.

[0024] The tail housing 13 is provided with a tensioning bracket assembly 11, which includes a front slider 11a, a slider connecting plate 11b, a cylinder connecting plate 11c, and a rear slider 11d. The tensioning bracket assembly 11 is a U-shaped structure with an opening facing the head of the machine. A front slider 11a and a rear slider 11d are respectively installed on both sides of the tensioning bracket assembly 11. The front slider 11a and the rear slider 11d on the same side are connected as a whole by the slider connecting plate 11b, and the two rear sliders 11d are connected as a whole by the cylinder connecting plate 11c.

[0025] Two guide rails 10 are fixed on the opposing inner walls of the tail housing 13. The outer walls of each front slider 11a and rear slider 11d are provided with slider grooves with outward openings. The slider grooves of the front slider 11a and rear slider 11d on the same side are supported on the corresponding guide rails 10. The slider grooves and guide rails 10 are matched in size. The four sliders form four-point support for the tensioning bracket assembly 11, and can slide smoothly along the guide rails 10 without jamming.

[0026] The sprocket shaft 9e has two threaded holes at each end, and each threaded hole is fixedly connected to the opposite end face of the corresponding front slider 11a by screws, so that the sprocket shaft system 9 can move back and forth with the tension bracket assembly 11 to adjust the tension of the ring chain 8.

[0027] An arc-shaped guide groove 14 is provided on the rear side of the sprocket 9a. The arc-shaped guide groove 14 is located in the tension bracket assembly 11 and opens forward. The outer walls on both sides of the arc-shaped guide groove 14 are fixedly connected to the slider connecting plate 11b by two pairs of mounting plates, totaling four plates. The arc-shaped bottom of the arc-shaped guide groove 14 is adapted to the outer edge trajectory of the disc 7 when it turns at the lower part of the machine tail, so as to avoid the formation of material dead corners at the machine tail.

[0028] When the equipment is running, the unloaded disc 7 and chain 8 reverse direction at the sprocket 9a at the tail. Since the material conveyed by the equipment often contains a lot of fine powder, this fine powder will be adsorbed on the disc 7 and chain 8. When passing the tail, some of this fine powder will fall off at the tail due to vibration. This fallen fine powder will be gathered together by the arc-shaped guide groove 14, and the bottom of the tail housing 13 is also arc-shaped to match the lower half of the disc 7, which also has a gathering effect on the fine powder. Therefore, this fallen fine powder will be scraped away by the disc and enter the conveying system, and will not be retained or gathered at the tail.

[0029] The sprocket shaft system 9 and the arc-shaped guide groove 14 can slide smoothly back and forth together with the tensioning bracket assembly 11, so that the tensioning of the ring chain 8 will be smoother. In the event of chain slippage or chain breakage, the sliding part will be pulled more smoothly towards the tail plate 18.

[0030] A reversing valve 4, a pneumatic triplet 5, and a cylinder 6 are installed on the outer wall of the tail end plate 18. The cylinder body of the cylinder 6 is fixed to the center of the outer wall of the tail end plate 18, and the piston rod of the cylinder 6 passes through the tail end plate 18 and is connected to the center of the cylinder connecting plate 11c. The air supply pipe of the cylinder 6 filters impurities and regulates air pressure through the pneumatic triplet 5, and controls the extension or retraction of the cylinder piston rod by switching the air path through the reversing valve 4. Once the chain 8 is properly tensioned, the air pressure is no longer adjusted, thus keeping the chain tension constant and adaptable to the chain elongation.

[0031] A sensor bracket 17 is mounted on the tensioning bracket assembly 11, and a sensor, such as a proximity switch, is mounted on the sensor bracket 17. The sensing plate 16 is located on the sensing plate adjusting seat 15 and its position is adjustable. When the chain is tensioned, the position of the sensing plate 16 on the sensing plate adjusting seat 15 is adjusted according to the position of the sensor bracket 17 to align the sensor with the sensing plate. In the event of chain derailment or breakage, the tensioning bracket assembly 11 is pulled backward by the cylinder 6, causing misalignment between the sensor and the sensing plate 16. The system then issues an alarm and stops.

[0032] When maintenance of the sprockets and bearings is required, the tail end plate 18 can be removed from the tail housing 13, and the sprocket shaft system 9, the arc-shaped guide groove 14 and the tension bracket assembly 11 can be slid out from the guide rail 10 together for maintenance.

[0033] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A tail section of a vertical tubular chain conveyor, comprising a tail section housing (13), wherein the upper part of the side wall facing the head of the tail section housing (13) is connected to a return pipe interface (1), the lower part is connected to a conveying pipe interface (2), and a tail end plate (18) is provided at the rear end, characterized in that: The tail housing (13) is provided with a sprocket shaft system (9) and a tension bracket assembly (11); the tension bracket assembly (11) is slidably connected by guide rails (10) on both sides of the inner wall of the tail housing (13); the sprocket shaft system (9) is fixed on the tension bracket assembly (11); a cylinder (6) is installed on the outer wall of the tail end plate (18), and the piston rod of the cylinder (6) passes through the tail end plate (18) and is connected to the tension bracket assembly (11); the rear side of the sprocket (9a) is provided with an arc-shaped guide groove (14), the arc-shaped guide groove (14) is fixed on the tension bracket assembly (11), and its arc-shaped bottom is adapted to the outer edge trajectory of the disc (7) when the tail turns.

2. The tail section of the vertical tubular chain conveyor according to claim 1, characterized in that: The tensioning bracket assembly (11) includes a front slider (11a), a slider connecting plate (11b), a cylinder connecting plate (11c), and a rear slider (11d). A front slider (11a) and a rear slider (11d) are respectively installed on both sides of the tensioning bracket assembly (11). The front slider (11a) and the rear slider (11d) on the same side are connected by the slider connecting plate (11b), and the rear sliders (11d) on both sides are connected by the cylinder connecting plate (11c). The outer walls of the front slider (11a) and the rear slider (11d) are provided with slider grooves with outward openings. The slider grooves slide in cooperation with the corresponding guide rails (10).

3. The tail section of the vertical tubular chain conveyor according to claim 1, characterized in that: The sprocket shaft system (9) includes a sprocket shaft (9e), a sprocket (9a), a self-aligning ball bearing (9b), a bearing cap (9c), a snap ring (9d), and a skeleton oil seal (9f). The sprocket shaft (9e) passes through the center hole of the sprocket (9a), and its two ends are supported by the self-aligning ball bearing (9b) and axially positioned by the snap ring (9d). The bearing cap (9c) is provided on the outside of the self-aligning ball bearing (9b), and a skeleton oil seal (9f) is provided between the bearing cap (9c) and the sprocket shaft (9e). The two ends of the sprocket shaft (9e) are fixedly connected to the front slider (11a) of the tensioning bracket assembly (11).

4. The tail section of the vertical tubular chain conveyor according to claim 1, characterized in that: It also includes a chain derailment alarm device, which includes a sensor bracket (17) mounted on the tensioning bracket assembly (11), a sensor mounted on the sensor bracket (17), and a sensor plate adjustment seat (15) and a sensor plate (16) mounted on the tail housing (13) or the tail end plate (18). The position of the sensor plate (16) on the sensor plate adjustment seat (15) is adjustable and used to align with the sensor. When chain derailment or chain breakage occurs, the tensioning bracket assembly (11) moves backward, causing the sensor and the sensor plate (16) to misalign, triggering an alarm signal.

5. The tail section of the vertical tubular chain conveyor according to claim 1, characterized in that: The outer wall of the tail end plate (18) is also equipped with a pneumatic triplet (5) and a reversing valve (4); the pneumatic triplet (5) and the reversing valve (4) are connected to the cylinder (6) through pipes and are used to filter, regulate the pressure and control the air supply of the cylinder.

6. The tail section of the vertical tubular chain conveyor according to claim 1, characterized in that: The top of the tail housing (13) is provided with an inspection door (3), and the inside of the inspection door (3) is provided with an inspection door screen (12).

7. The tail section of the vertical tubular chain conveyor according to claim 1, characterized in that: The bottom of the tail housing (13) is arc-shaped to match the shape of the lower half of the disc (7).

8. The tail section of the vertical tubular chain conveyor according to any one of claims 1 to 7, characterized in that: The tail end plate (18) and the tail housing (13) are connected by a detachable flange.

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