A drive common bidirectional en masse scraper conveyor

Abstract

A kind of drive common two-way scraper conveyor, including head, tail, transition section, middle section, scraper chain;The head is equipped with head sealing mechanism;Tail is equipped with tail sealing mechanism;Head sealing mechanism includes head shaft sealing layer, head shaft sealing layer includes sealing cover, and the labyrinth seal structure is formed between sealing cover and the outer side end surface of sealing sleeve;First annular sealing ring is installed between the inner side of sealing cover and sealing sleeve;First packing seal box is installed on the upper end of sealing cover;Tail sealing mechanism includes tail shaft sealing layer, and tail shaft sealing layer includes the ring type wear-resistant sealing ring with framework, second packing seal box arranged in tail shaft extension portion in sequence.The utility model provides a kind of drive common two-way scraper conveyor, guarantees to alkaline cellulose high-efficiency conveying and can be effectively sealed.

Description

Technical Field

[0001] This utility model relates to the field of buried scraper conveyors, and in particular to a bidirectional buried scraper conveyor with a drive system. Background Technology

[0002] Alkaline cellulose is a derivative or complex of cellulose formed under alkaline conditions. The fibers swell, increasing in diameter, reducing internal crystallinity, and becoming more loosely structured. After drying, it forms a white or pale yellow fluffy solid, widely used in metallurgy, chemical industry, food, textiles, light industry, paper industry, biopharmaceuticals, and architectural coatings. Because alkaline cellulose is highly hygroscopic and easily hydrolyzed in water, and degrades (decreases degree of polymerization) when exposed to high temperatures or prolonged exposure, it must be protected from moisture and light, and contact with acidic substances should be avoided during use.

[0003] In the existing technology, bulk material conveying equipment is commonly used to transport alkaline cellulose. Due to the chemical properties of alkaline cellulose, it is prone to hydrolysis and degradation during the transportation process, which leads to a reduction or failure of some raw material properties, resulting in production losses. At the same time, the equipment failure rate is high, increasing equipment maintenance costs.

[0004] On the other hand, industries such as metallurgy, chemical industry, food, textile, light industry and paper, biopharmaceutical, and building coatings are facing increasing environmental protection requirements and reduced equipment energy consumption. They need a more environmentally friendly and efficient bulk material conveying equipment that is also sealed and insulated. Many equipment upgrades and renovations are being carried out, and with limited space for equipment layout, a more compact structure is required.

[0005] The existing buried scraper conveyors do not meet the sealing requirements for conveying alkaline cellulose. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a drive-in bidirectional buried scraper conveyor that ensures efficient conveying of alkaline cellulose and can effectively seal to prevent fiber accumulation; in addition, it can quickly open the cover plate of the middle section and the maintenance door on the machine body.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A bidirectional buried scraper conveyor with a drive system includes a head section, a tail section, a transition section, an intermediate section, and a scraper chain; the head section is provided with a head sealing mechanism; the tail section is provided with a tail sealing mechanism. The head sealing mechanism includes a head shaft sealing layer, which includes a sealing cover. A labyrinth sealing structure is formed between the sealing cover and the outer end face of the sealing sleeve. A first annular sealing ring is installed between the sealing cover and the inner side of the sealing sleeve. A first packing sealing box is installed on the upper end of the sealing cover. The tail sealing mechanism includes a tail shaft sealing layer, which includes a framed annular wear-resistant sealing ring and a second packing sealing box arranged sequentially at the tail shaft protrusion.

[0008] The head sealing mechanism also includes a self-adhesive sealing gasket disposed between the head side plate and the side sealing plate.

[0009] The sealing cover is fixed to the side sealing plate by fastening bolts, and the sealing sleeve is fixed to the head shaft by fastening screws and tightly connected to the head shaft; the lower end face of the sealing cover is provided with a labyrinth-shaped groove, and the upper end face of the sealing sleeve is provided with a labyrinth-shaped directional tooth, and the directional tooth and the groove are interlocked.

[0010] The end of the fastening bolt is tapered and a sealing gasket is provided on the bottom surface.

[0011] The tail sealing mechanism further includes a second sealing plate disposed on the sliding plate and in contact with the tail side plate, the center of the second sealing plate passing through the tail shaft; the tail sealing mechanism also includes a sealing cover installed outside the tail shaft.

[0012] The upper end of the transition section and the middle section is equipped with a sealing quick-opening cover mechanism. The sealing quick-opening cover mechanism includes a cover plate with a U-shaped groove at the outer end. A swivel bolt is hinged to the corresponding side plate of the middle section. The swivel bolt is screwed into the U-shaped groove and locked by friction between the handwheel and the end face of the pressure plate.

[0013] A self-adhesive sealing gasket is provided between the cover plate and the end face of the middle section side plate.

[0014] The inspection door is a sealed quick-opening inspection door mechanism, which includes a door cover. The outer edge of the door cover is inserted into the U-shaped groove on the door seat and sealed by a sealing strip. A pressing handle extends outward from the door cover. The U-shaped groove of the pressing handle is engaged with the pressing seat. The fastening nut is threadedly connected to the pressing seat and screwed down to lock it.

[0015] The inner side of the door cover is provided with an L-shaped plate, the vertical section of which is attached to the inner wall of the door seat; the horizontal end face of the L-shaped plate is attached to the end face of the door seat by rubber.

[0016] The bidirectional buried scraper conveyor consists of two buried scraper conveyors connected in a sealed manner, with the heads of the two buried scraper conveyors close together and sharing a common discharge port.

[0017] This utility model provides a driven bidirectional buried scraper conveyor with the following technical advantages: 1) By setting a head sealing mechanism, triple sealing is achieved; when there is positive pressure inside the shell, fiber dust must pass through the labyrinth seal, the first annular sealing ring, and the first packing sealing box in sequence before reaching the outside of the shell, which greatly reduces the probability of dust leakage or dust generation in the head shell; when there is no positive pressure, it also prevents external dust and gas from entering and causing chemical reactions with the fibers; an additional first sealing plate is added to the contact surface between the head side plate and the side pressure plate, and the side plate and the side sealing plate are connected and tightened with bolts, which further enhances the sealing and dustproof effect of the head shell.

[0018] 2) A triple seal is achieved by employing a fully enclosed tail sealing mechanism. Specifically: a second sealing plate is installed on the contact surface between the sliding plate and the side plate; the gap between the tail shaft and the outlet hole on the side plate and the sliding plate is sealed twice by a second packing seal box and a ring-shaped wear-resistant seal with a skeleton; finally, an additional sealing cover is added to cover all the above-mentioned sealed parts, making them completely sealed. This sealing structure not only effectively prevents dust leakage or dust emission from the tail shell, but also maintains the self-lubricating and wear-resistant properties of the seals, unaffected by the external environment.

[0019] 3) The cover plate of the intermediate section shell is connected to the side plate via a U-shaped groove pressure plate and a handwheel-equipped snap bolt. Fastening the cover plate onto the side plate allows for quick opening and closing, facilitating equipment maintenance. A double-sided adhesive sealing gasket is installed between the mating surfaces of the cover plate and the side plate flange to ensure that the intermediate shell does not leak ash or generate dust under positive pressure. In case of equipment failure, the cover plate can be quickly disassembled for maintenance.

[0020] 4) The inspection door adopts an embedded double-seal structure. When the door is closed, the vertical part of the door cover is embedded in the U-shaped groove and tightly fits the sealing strip inside the groove, providing a good sealing effect and ensuring that fiber powder inside the housing will not leak out from the inspection door area. The clamping seat has fastening bolts, allowing adjustment of the clamping handle's tightness. The opening and closing of the inspection door is controlled by the clamping handle, allowing for quick opening and closing, facilitating timely observation of the equipment's internal operating status and convenient equipment maintenance. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is the front view of the present invention.

[0022] Figure 2 This is a schematic diagram of the head sealing mechanism in this utility model.

[0023] Figure 3 This is a partially enlarged schematic diagram of the head sealing mechanism in this utility model.

[0024] Figure 4 This is a schematic diagram of the tail sealing mechanism in this utility model.

[0025] Figure 5 This is a partially enlarged schematic diagram of the tail sealing mechanism in this utility model.

[0026] Figure 6 This is a front view of the sealing quick-opening top cover mechanism in this utility model.

[0027] Figure 7 This is a cross-sectional view of the sealing quick-opening top cover mechanism in this utility model.

[0028] Figure 8 This is a top view of the pressure plate of this utility model.

[0029] Figure 9 This is a top view of the sealed quick-opening inspection door mechanism in this utility model.

[0030] Figure 10 This is a partially enlarged schematic diagram of the sealed quick-opening inspection door mechanism in this utility model.

[0031] Figure 11 This is a cross-sectional view of the sealing quick-opening inspection door mechanism in this utility model.

[0032] In the diagram: 1. Inspection door; 2. Head section; 3. Transition section; 4. Upper guide rail; 5. Middle section; 6. Feed port; 7. Tail section. 8. Scraper chain, 9. Lower guide rail, 10. Discharge port, 11. Head side plate, 12. Sealing gasket, 13. Head side sealing plate, 14. Head shaft, 15. First packing sealing box, 16. First annular sealing ring, 17. Sealing cover, 18. Fastening bolt, 19. Sealing sleeve, 20. Head wheel, 21. Tail side plate, 22. Screw tensioning mechanism, 23. Rail pressing assembly, 24. Sliding plate, 25. Sealing plate, 26. Tail shaft, 27. Second packing sealing box, 28. Second annular sealing ring, 29. Sealing cover, 30. Tail wheel, 31. Middle section side plate, 32. Middle section bottom plate, 33. Slip bolt, 36. Pressure plate, 37. Self-adhesive sealing gasket, 38. Support rod, 39. Door cover, 40. Door seat, 41. Boss, 42. Sealing strip, 43. Pressing handle, 44. Pressing seat. Detailed Implementation

[0033] like Figure 1 As shown, a bidirectional buried scraper conveyor includes a head section 2, a tail section 7, a transition section 3, an intermediate section 5, a drive unit, a tensioning device, and mechanical and electrical protection devices. The head section housing contains a head wheel assembly; the tail section housing contains a tail wheel assembly; the intermediate section housing contains a traction component—a scraper chain 8—as well as upper guide rails 4 and lower guide rails 9; the exterior of the machine body is equipped with an inlet 6, an outlet 10, and multiple inspection doors 1 at suitable locations. During operation, the drive unit (motor) drives the head wheel 20 in the head section to rotate via chain drive. The head wheel 20 drives the scraper chain 8 to run towards the head in the lower bearing cavity of the intermediate section housing, conveying the material to the outlet 10; in the upper empty cavity of the housing, the scraper chain 8 runs around the head wheel assembly in the head section towards the tail. The scraper chain 8 forms a continuously operating, endlessly closed traction component, continuously conveying the material to the outlet for discharge.

[0034] In this embodiment, two submerged scraper conveyors are connected side-by-side, with their heads close together and sharing a single discharge port 10, while their tails face outwards. Each of the two submerged scraper conveyors is driven by an independent drive unit. This design is primarily based on spatial considerations. The drive unit, scraper chain 8, upper guide rail 4, and lower guide rail 9 in this embodiment can all utilize existing technologies. The main improvement in this application lies in the sealing.

[0035] like Figure 2-3 As shown, the head 2 is provided with a head sealing mechanism, which consists of three sealing structures: a first seal, a head shaft sealing layer, a second seal, and a third seal.

[0036] The first seal includes a head side plate 11 and a side sealing plate 13, which are fixed and locked together by bolts. A self-adhesive sealing gasket is installed between the head side plate 11 and the side sealing plate 13 to improve the tightness of the connection. Through the first seal, the side sealing plate 13 is ensured to fit tightly with the head side plate 11, enhancing the sealing and dustproof effect of the head shell.

[0037] A head shaft sealing layer is provided at the head shaft 14, including a sealing cover 17, which is fixed to the side sealing plate 13 by fastening bolts 18. A labyrinthine groove is provided on the lower end face of the sealing cover 17, and a labyrinthine directional tooth is provided on the upper end face of the sealing sleeve 19. The directional tooth of the sealing sleeve 19 and the groove of the sealing cover 17 interlock to form a labyrinthine sealing structure. The sealing sleeve 19 is fixed to the head shaft 14 with fastening screws, so that the sealing sleeve 19 and the head shaft 14 can rotate relative to the sealing cover 17.

[0038] The sealing sleeve 19 is vertically connected to the head shaft 14, and the horizontal section is connected to the sealing cover 17 by a meandering zig line. This lengthens the distance from which dust leaks out, allowing it to settle midway. In addition, the uneven steps can also reduce pressure and extend the service life of the sealing sleeve.

[0039] In addition, a first annular sealing ring 16 is installed between the sealing cover 17 and the sealing sleeve 19 at the contact point with the head shaft 14. The first annular sealing ring 16 is a polyurethane sealing gasket, and the first annular sealing ring 16 forms a second seal.

[0040] A first packing seal box 15 is installed at the outermost end of the head shaft on the upper end of the sealing cover 17, and the first packing seal box 15 forms a third seal.

[0041] By employing a multi-layered sealing structure at the shaft extension, the probability of dust leakage or emission from the head housing is significantly reduced, preventing the entry of external dust or gas and ensuring it is unaffected by the external environment. For example, air with high moisture content entering the equipment can cause cellulose oxidation and degradation.

[0042] Preferably, the end of the fastening bolt 18 is tapered, and a corresponding sealing gasket 12 is provided on the bottom surface. The lower end of the sealing gasket 12 is a first sealing plate. In this way, even if some dust overflows from the labyrinth seal, it will be blocked by the two sealing plates at the outlet.

[0043] like Figures 4-5 As shown, the tail section 7 is provided with a tail sealing mechanism, which includes a first seal, a tail shaft sealing layer, and a sealing cover 29.

[0044] The first seal includes a tail side plate 21, with a sliding plate 24 arranged at the opening of the tail side plate 21. A second sealing plate 25 is fixed to the sliding plate 24 and its contact surface with the tail side plate 21. The front and rear sides of the sliding plate 24 are slidably disposed in the pressure rail assembly 23, which guides the second sealing plate 25 and keeps it tightly against the tail side plate 21. One side of the sliding plate 24 is adjusted to move left and right by a screw tensioning mechanism 22. The screw tensioning mechanism 22 is very common in belt conveyors and scraper conveyors and is existing technology. Refer to the tensioning mechanism in "CN202020827069 - A tail section of a double-chain scraper conveyor that can be tensioned synchronously". Since the lower end face of the second sealing plate 25 contacts the tail side plate 21 and its center passes through the tail shaft 26, this not only seals the gap at the connection between the tail side plate 21 and the sliding plate 24, but also provides the first seal for the tail shaft 26.

[0045] In addition, a tail shaft sealing layer is installed at the exit portion of the tail shaft 26. The tail shaft sealing layer includes a framed annular wear-resistant sealing ring 28 and a second packing seal box 27 arranged sequentially at the protrusion of the tail shaft 26. The second packing seal box 27 is mounted on the sliding plate 24, and the annular wear-resistant sealing ring 28 is located inside the second packing seal box 27 and the sliding plate 24 and is in contact with the tail shaft 26.

[0046] In addition, a sealing cover 29 is fixed on the tail side plate 21 outside the tail shaft 26.

[0047] The tail section is sealed first by the second sealing plate 25, second by the tail shaft sealing layer, and third by the sealing cover 29. This not only effectively prevents dust leakage or emission from the tail casing, but also maintains the self-lubricating and wear-resistant properties of the seals, preventing the entry of external dust or gas and protecting it from external environmental influences. For example, air with high moisture content entering the equipment can cause cellulose oxidation and degradation.

[0048] like Figures 6-8As shown, a sealing quick-opening cover mechanism is installed at the upper end of transition section 3 and intermediate section 5. The sealing quick-opening cover mechanism includes a cover plate 31, with multiple sets of pressure plates 37 fixed on both sides of the cover plate 31. Each pressure plate 37 has a U-shaped groove on its outer side. Correspondingly, the intermediate section side plates 32 on both sides of the intermediate section housing are hinged with swivel bolts 36, and handwheels are threaded onto the swivel bolts 36. The swivel bolts 36 pass through the U-shaped grooves of the pressure plates 37 and are locked by friction with the end face of the pressure plates 37 through the handwheel. When it is necessary to open, simply loosen the swivel bolts and rotate them outwards at a certain angle, and the cover plate 31 can be removed, which is simple and convenient.

[0049] In addition, in order to ensure the sealing between the cover plate 31 and the middle section side plate 32, a self-adhesive sealing gasket 38 is provided between the end faces of the cover plate 31 and the middle section side plate 32.

[0050] like Figures 9-11 As shown, a sealed quick-opening inspection door mechanism is provided at inspection door 1. The sealed quick-opening inspection door mechanism includes a "U"-shaped groove provided on the door seat 41, and a sealing strip 43 is provided in the "U"-shaped groove. The corresponding door cover 40 is provided with a boss 42, which mates with the opening at the sealed quick-opening inspection door. The door cover 40 is provided with a clamping handle 44, and the clamping handle 44 has U-shaped grooves at both ends. The U-shaped grooves pass through the clamping seat 45 on the door seat 41. The clamping seat 45 has a fastening nut. After the fastening nut is unscrewed, the tightness of the clamping handle 44 can be adjusted.

[0051] In addition, an L-shaped plate 46 is provided on the inner side of the door cover 40. A rubber sheet is installed on the lower end face of the horizontal section of the L-shaped plate 46 through a dovetail groove. The vertical part of the door cover 40 is installed in the "U"-shaped groove with a sealing strip 43 to achieve an outer seal. The vertical section of the L-shaped plate 46 contacts the inner wall of the door seat 41, and the rubber on the end face of the horizontal section contacts the end face of the door seat 41 to achieve an inner seal.

[0052] The boss 42 is embedded into the opening of the quick-opening inspection door, and the vertical part of the edge of the door cover 40 is inserted into the "U" shaped groove and contacts the sealing strip 43. The L-shaped plate 46 seals the inside of the door seat 41, which can effectively prevent dust from overflowing from the contact end face of the door cover 40 and the door seat 41. This ensures a good overall seal, and when there is positive pressure inside the housing, dust will not leak out from the gaps in the inspection door.

Claims

1. A bidirectional buried scraper conveyor with a drive system, comprising a head section (2), a tail section (7), a transition section (3), a middle section (5), and a scraper chain (8); characterized in that: The head (2) is provided with a head sealing mechanism; the tail (7) is provided with a tail sealing mechanism; The head sealing mechanism includes a head shaft sealing layer, which includes a sealing cover (17). A labyrinth sealing structure is formed between the sealing cover (17) and the outer end face of the sealing sleeve (19). A first annular sealing ring (16) is installed between the inner side of the sealing cover (17) and the sealing sleeve (19). A first packing sealing box (15) is installed at the upper end of the sealing cover (17). The tail sealing mechanism includes a tail shaft sealing layer, which includes a skeleton-type wear-resistant sealing ring (28) and a second packing box (27) arranged sequentially at the tail shaft (26) extension.

2. The driven bidirectional buried scraper conveyor according to claim 1, characterized in that: The head sealing mechanism also includes a self-adhesive sealing gasket disposed between the head side plate (11) and the side sealing plate (13).

3. A bidirectional buried scraper conveyor with a drive system according to claim 2, characterized in that: The sealing cover (17) is fixed to the side sealing plate (13) by fastening bolts (18), and the sealing sleeve (19) is fixed to the head shaft (14) by fastening screws and is tightly connected to the head shaft (14); the lower end face of the sealing cover (17) is provided with a labyrinth-shaped groove, and the upper end face of the sealing sleeve (19) is provided with labyrinth-shaped directional teeth, and the directional teeth and the groove are interlocked.

4. A bidirectional buried scraper conveyor with a drive system according to claim 3, characterized in that: The end of the fastening bolt (18) is tapered and a sealing gasket (12) is provided on the bottom surface.

5. A bidirectional buried scraper conveyor with a drive system according to claim 1, characterized in that: The tail sealing mechanism further includes a second sealing plate (25) disposed on the sliding plate (24) and in contact with the tail side plate (21), the center of the second sealing plate (25) passing through the tail shaft (26); the tail sealing mechanism also includes a sealing cover (29) installed outside the tail shaft (26).

6. A bidirectional buried scraper conveyor with a drive system according to claim 1, characterized in that: The upper end of the transition section (3) and the middle section (5) is equipped with a sealing quick-opening cover mechanism. The sealing quick-opening cover mechanism includes a cover plate (31). The outer end of the cover plate (31) has a U-shaped groove. The corresponding middle section side plate (32) is hinged with a live bolt (36). The live bolt (36) is screwed into the U-shaped groove and locked by friction with the end face of the pressure plate (37) through the handwheel.

7. A bidirectional buried scraper conveyor with a drive system according to claim 6, characterized in that: A self-adhesive sealing gasket (38) is provided between the end face of the cover plate (31) and the middle section side plate (32).

8. A bidirectional buried scraper conveyor with a drive system according to claim 1, characterized in that: The inspection door (1) is a sealed quick-opening inspection door mechanism. The sealed quick-opening inspection door mechanism includes a door cover (40). The outer edge of the door cover (40) is inserted into the U-shaped groove on the door seat (41) and sealed by a sealing strip (43). A pressing handle (44) extends outward from the door cover (40). The U-shaped groove of the pressing handle (44) is engaged with the pressing seat (45). The fastening nut is threadedly connected to the pressing seat (45) and screwed down to lock.

9. A driven bidirectional buried scraper conveyor according to claim 8, characterized in that: The inner side of the door cover (40) is provided with an L-shaped plate (46), the vertical section of the L-shaped plate (46) is attached to the inner wall of the door seat (41); the horizontal end face of the L-shaped plate (46) is attached to the end face of the door seat (41) by rubber.

10. A bidirectional buried scraper conveyor with a drive system according to claim 1, characterized in that: The bidirectional buried scraper conveyor is a sealed connection of two buried scraper conveyors, with the heads (2) of the two buried scraper conveyors close together and sharing a discharge port (10).

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