Screw conveyor transmission system with bearing protection mechanism

Abstract

The utility model relates to the technical field of screw conveyors, and discloses a screw conveyor transmission system with a bearing protection mechanism, which comprises a gear box, a speed change mechanism is movably mounted on the inner wall of the gear box, a sealing mechanism is sleeved on the outer wall of the speed change mechanism, a mounting pipe is fixedly mounted on the outer wall of the sealing mechanism, and the bearing protection mechanism is fixedly mounted on the mounting pipe. The mounting pipe is arranged on the right side of the gearbox, the sealing mechanism comprises an auxiliary sleeve, a clamping block, a spiral blade, a cover plate, a first buckle, a ball, a second buckle and a fixing plate, and the speed change mechanism comprises an input shaft, an input gear, a first transmission shaft, a second transmission shaft, a second speed change gear, a first speed change gear, an output shaft and an output gear. According to the utility model, the problems that the bearing is damaged and cannot be completely conveyed when dust materials are conveyed are solved, the sealing mechanism can be used for sealing between the output shaft and the mounting pipe, powder is prevented from entering the bearing and influencing the bearing, and thus the protection on the bearing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveyors, in particular to a screw conveyor transmission system with a bearing protection mechanism. Background Art

[0002] Screw conveyor is a machine that uses a motor to drive the screw to rotate and push the material to achieve the purpose of conveying. It can convey horizontally, obliquely or vertically, and has the advantages of simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance, and convenient closed transportation. Screw conveyors are divided into two types of conveying forms: shaft screw conveyors and shaftless screw conveyors, and are divided into U-shaped screw conveyors and tubular screw conveyors in appearance. Shaft screw conveyors are suitable for non-sticky dry powder materials and small particle materials, while shaftless screw conveyors are suitable for conveyors with sticky and easily entangled materials. The working principle of the screw conveyor is that the rotating spiral blades push the material to be conveyed by the screw conveyor. The force that prevents the material from rotating with the screw conveyor blades is the weight of the material itself and the friction resistance of the screw conveyor casing to the material. The spiral blades welded on the rotating shaft of the screw conveyor have different surface shapes, such as solid surface, belt surface, and blade surface, depending on the different conveyed materials. The screw shaft of the screw conveyor has a thrust bearing at the end of the material movement direction to provide axial reaction force to the screw along with the material. When the machine is long, an intermediate hanging bearing should be added.

[0003] When the screw shaft rotates, due to the gravity of the material and the friction between the material and the trough wall, the material can only move forward along the bottom of the conveyor trough under the push of the blades, which is like a non-rotating nut moving in translation along the rotating screw. The movement of the material in the middle bearing depends on the thrust of the material moving forward from behind. Therefore, the transportation of materials in the conveyor is completely a sliding movement. When the spiral blades are conveying powder, the loose contact between the spiral blades and the channel pipe will cause the powder to be missed during transportation, resulting in waste. In addition, the transportation of powder will cause the rotating parts to be damaged by the powder, which will increase the frequency of replacing the bearings at the rotating connection. Utility Model Content

[0004] The utility model aims to provide a screw conveyor transmission system with a bearing protection mechanism, so as to achieve the purpose of not causing powder to be left over when conveying powder and sealing the rotating part.

[0005] To achieve the above object, the utility model provides the following technical solution: a screw conveyor transmission system with a bearing protection mechanism, comprising a gear box, a speed change mechanism is movably installed on the inner wall of the gear box, a sealing mechanism is sleeved on the outer wall of the speed change mechanism, a mounting tube is fixedly installed on the outer wall of the sealing mechanism, and the mounting tube is arranged on the right side of the gear box;

[0006] The sealing mechanism comprises an auxiliary sleeve, a block, a spiral blade, a cover plate, a first buckle, a ball, a second buckle and a fixing plate. The spiral blade is fixedly sleeved on the outer wall of the speed change mechanism. A slider is arranged at the edge of the spiral blade. A slide groove is provided on the inner wall of the auxiliary sleeve. The spiral blade is slidably connected with the auxiliary sleeve through the slider. The cover plate is clamped with the first buckle. The fixing plate is fixedly mounted on the left end of the mounting tube. The second buckle is clamped with the fixing plate. The second buckle is rotatably connected with the speed change mechanism through the first bearing. The ball is arranged between the first buckle and the second buckle. The outer wall of the auxiliary sleeve and the inner wall of the mounting tube are symmetrically provided with a slot. The block is arranged on the inner wall of the slot. A feed port is provided on the top of the mounting tube and the auxiliary sleeve. The sealing mechanism can be used to seal between the output shaft and the mounting tube to prevent powder from entering the bearing and affecting the bearing, thereby improving the protection of the bearing. The combination of the auxiliary sleeve and the spiral blade can not only avoid the wear of the spiral blade, but also ensure that the material will not remain in the auxiliary sleeve during transportation.

[0007] Preferably, a mounting groove is provided on the inner wall of the cover plate, a positioning block is fixedly connected to the left side of the cover plate, a positioning groove is provided on the left side of the first buckle, the positioning groove is clamped with the positioning block, an annular groove is provided on the outer wall of the first buckle, and a gap is set between the outer wall of the first buckle and the inner wall of the mounting tube. The first buckle and the output shaft are fixedly sleeved to ensure smooth rotation between the output shaft and the second buckle, and the position of the first buckle can be fixed by the cover plate to prevent the first buckle from shifting after long-term operation.

[0008] Preferably, the outer wall of the second buckle is fixedly connected to the inner wall of the mounting tube, the second buckle and the left end of the mounting tube are both provided with a fixing groove, the right end of the fixing plate is fixedly connected with a fixing block, the fixing plate is clamped with the fixing groove, the second buckle can ensure smooth rotation between the mounting tube and the output shaft, and the fixing plate can fix the position of the mounting tube and the second buckle.

[0009] Preferably, the sliding groove opened on the inner wall of the auxiliary sleeve is spirally opened, and the grooves opened on the outer wall of the auxiliary sleeve and the inner wall of the mounting tube are transversely opened. The spirally opened sliding groove is more convenient to combine with the slider of the spiral blade, and the transversely opened groove can make the slider and the sliding groove more stable when combined, thereby avoiding the auxiliary sleeve following the rotation of the spiral blade when combined.

[0010] Preferably, the speed change mechanism includes an input shaft, an input gear, a first transmission shaft, a second transmission shaft, a second speed gear, a first speed gear, an output shaft and an output gear, the output shaft is connected to the inner wall of the second bearing through a spline, the outer wall of the second bearing is fixedly connected to the gear box, the input gear is fixedly sleeved on the outer wall of the input shaft, the left and right ends of the first transmission shaft and the second transmission shaft respectively pass through the left and right ends of the gear box and are rotatably connected to the gear box through a third bearing, the number of the second speed gear and the first speed gear are both two, the two second speed gears and the first speed gear are arranged side by side on the left and right, the two second speed gears are fixedly sleeved on the outer wall of the first transmission shaft, the two first speed gears are fixedly sleeved on the outer wall of the second transmission shaft, the output shaft passes through the right end of the gear box and extends to the inner wall of the gear box, the output gear is fixedly sleeved on the outer wall of the output end, the speed of the output shaft can be changed without replacing the motor through the speed change mechanism, so that different speeds can be used when conveying different materials, the input shaft is connected to the gear box through a spline, the input shaft can be moved left and right, so that the input gear can be meshed with the second speed gear or the first speed gear for transmission.

[0011] Preferably, a mounting rod is fixedly connected to the outer wall of the output shaft, the output shaft is fixedly connected to the cover plate via the mounting rod, the output shaft is rotatably connected to the second buckle via a first bearing, and the spiral blade is fixedly mounted on the outer wall of the output shaft.

[0012] Preferably, the first speed gear on the left side is arranged on the right side of the second speed gear on the left side, and the first speed gear and the second speed gear on the right side are both meshed with the output gear. The number of teeth of the first speed gear is greater than the number of teeth of the second speed gear. The speed shifting function can be achieved by setting the first speed gear and the second speed gear with different numbers of teeth.

[0013] The screw conveyor transmission system with a bearing protection mechanism has the following beneficial effects:

[0014] (1) The utility model can change the speed of the output shaft without replacing the motor through the speed change mechanism, so that different speeds can be used when conveying different materials. The input shaft is connected to the gear box through a spline, and the input shaft can be moved left and right, so that the input gear can mesh with the second speed gear or the first speed gear for transmission.

[0015] (2) The utility model can seal the output shaft and the mounting tube through the sealing mechanism to prevent powder from entering the bearing and affecting the bearing, thereby improving the protection of the bearing. The sliding arrangement between the spiral blade slider and the inner wall groove of the auxiliary sleeve can make the spiral blade rotate together with the auxiliary sleeve, avoiding the spiral blade from being directly in contact with the mounting tube and causing wear of the spiral blade, thereby reducing the problem of material residue on the inner wall of the pipe during material transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of the utility model;

[0017] Figure 2 It is a top sectional view of the utility model;

[0018] Figure 3 It is a side view of the utility model;

[0019] Figure 4 It is a top view side sectional view of the utility model;

[0020] Figure 5 This is an enlarged view of point A of the utility model;

[0021] Figure 6 It is a three-dimensional diagram of the spiral blade of the utility model.

[0022] In the figure: 1 gear box, 2 speed change mechanism, 3 sealing mechanism, 4 mounting tube, 201 input shaft, 202 input gear, 203 first transmission shaft, 204 second transmission shaft, 205 second speed change gear, 206 first speed change gear, 207 output shaft, 208 output gear, 301 auxiliary sleeve, 302 block, 303 spiral blade, 304 cover plate, 305 first buckle, 306 ball, 307 second buckle, 308 fixing plate. DETAILED DESCRIPTION

[0023] like Figure 1-6 As shown, the utility model provides a technical solution: a screw conveyor transmission system with a bearing protection mechanism, comprising a gear box 1, a speed change mechanism 2 is movably installed on the inner wall of the gear box 1, a sealing mechanism 3 is sleeved on the outer wall of the speed change mechanism 2, a mounting tube 4 is fixedly installed on the outer wall of the sealing mechanism 3, and the mounting tube 4 is arranged on the right side of the gear box 1.

[0024] The sealing mechanism 3 includes an auxiliary sleeve 301, a block 302, a spiral blade 303, a cover plate 304, a first buckle 305, a ball 306, a second buckle 307 and a fixing plate 308. The spiral blade 303 is fixedly sleeved on the outer wall of the speed change mechanism 2. A slider is provided at the edge of the spiral blade 303. A sliding groove is provided on the inner wall of the auxiliary sleeve 301. The spiral blade 303 is slidably connected to the auxiliary sleeve 301 through the slider. The cover plate 304 is snap-fitted with the first buckle 305. An installation groove is provided on the inner wall of the cover plate 304. A positioning block is fixedly connected to the left side of the cover plate 304. A positioning groove is provided on the left side of the first buckle 305. The positioning groove is snap-fitted with the positioning block. The outer wall of the first clip 305 is provided with an annular groove, and a gap is set between the outer wall of the first clip 305 and the inner wall of the mounting tube 4. The first clip 305 and the output shaft 207 are fixedly sleeved to ensure smooth rotation between the output shaft 207 and the second clip 307. The position of the first clip 305 can be fixed by the cover plate 304 to prevent the first clip 305 from deviating after long-term operation. The fixing plate 308 is fixedly installed on the left end of the mounting tube 4, and the second clip 307 is clamped with the fixing plate 308. The outer wall of the second clip 307 is fixedly connected to the inner wall of the mounting tube 4. The second clip 307 and the left end of the mounting tube 4 are both provided with a fixing groove. The fixing plate 308 is fixedly installed on the left end of the mounting tube 4. The end is fixedly connected with a fixing block, and the fixing plate 308 is clamped with the fixing groove. The second clamp 307 can ensure smooth rotation between the mounting tube 4 and the output shaft 207. The position of the mounting tube 4 and the second clamp 307 can be fixed by the fixing plate 308. The second clamp 307 is rotatably connected with the speed change mechanism 2 through the first bearing. The ball 306 is arranged between the first clamp 305 and the second clamp 307. The outer wall of the auxiliary sleeve 301 and the inner wall of the mounting tube 4 are symmetrically provided with clamping grooves. The clamping block 302 is arranged on the inner wall of the clamping groove. The sliding groove provided on the inner wall of the auxiliary sleeve 301 is spirally opened, and the clamping groove provided on the outer wall of the auxiliary sleeve 301 and the inner wall of the mounting tube 4 is transverse. The spirally opened slide groove is more convenient to combine with the slider of the spiral blade 303, and the horizontally opened slot can make the slider and the slide groove more stable when combined, avoiding the auxiliary sleeve 301 to follow the rotation of the spiral blade 303 when combined. The top of the mounting tube 4 and the auxiliary sleeve 301 are both provided with a feed port, and the sealing mechanism 3 can be used to seal the output shaft 207 and the mounting tube 4 to prevent powder from entering the bearing and affecting the bearing, thereby improving the protection of the bearing. The combination of the auxiliary sleeve 301 and the spiral blade 303 can not only avoid the wear of the spiral blade 303, but also ensure that the material will not remain in the auxiliary sleeve 301 during transportation.

[0025] The speed change mechanism 2 includes an input shaft 201, an input gear 202, a first transmission shaft 203, a second transmission shaft 204, a second speed change gear 205, a first speed change gear 206, an output shaft 207 and an output gear 208. The output shaft 207 is connected to the inner wall of the second bearing through a spline, and the outer wall of the second bearing is fixedly connected to the gear box 1. The input gear 202 is fixedly sleeved on the outer wall of the input shaft 201. The left and right ends of the first transmission shaft 203 and the second transmission shaft 204 respectively penetrate the left and right ends of the gear box 1 and The third bearing is rotatably connected to the gear box 1. The number of the second speed gear 205 and the first speed gear 206 are both two. The two second speed gears 205 and the first speed gear 206 are arranged side by side on the left and right. The two second speed gears 205 are fixedly sleeved on the outer wall of the first transmission shaft 203. The two first speed gears 206 are fixedly sleeved on the outer wall of the second transmission shaft 204. The output shaft 207 passes through the right end of the gear box 1 and extends to the inner wall of the gear box 1. The output gear 208 is fixedly sleeved on the outer wall of the second transmission shaft 204. The outer wall of the output end, the left first speed gear 206 is arranged on the right side of the left second speed gear 205, and the right first speed gear 206 and the second speed gear 205 are both meshed with the output gear 208. The number of teeth of the first speed gear 206 is greater than the number of teeth of the second speed gear 205. The speed change function can be achieved by setting the first speed gear 206 and the second speed gear 205 with different numbers of teeth. The outer wall of the output shaft 207 is fixedly connected with a mounting rod, and the output shaft 207 is fixedly connected to the cover plate 304 through the mounting rod. The output shaft 207 is rotatably connected to the second buckle 307 through the first bearing, and the spiral blade 303 is fixedly installed on the outer wall of the output shaft 207. The speed of the output shaft 207 can be changed without replacing the motor through the speed change mechanism 2, so that different speeds can be used when conveying different materials. The input shaft 201 is connected to the gear box 1 through a spline, and the input shaft 201 can be moved left and right, so that the input gear 202 can be meshed with the second speed gear 205 or the first speed gear 206 for transmission.

[0026] When in use, the right end of the input shaft 201 of the transmission system is fixedly connected to the output end of the motor, and the transmission system is installed at the required position. The motor rotates to drive the input shaft 201, and the input shaft 201 drives the input gear 202 to rotate. The input gear 202 drives the second speed gear 205 on the left to rotate. The second speed gear 205 drives the first transmission shaft 203. The first transmission shaft 203 drives the second speed gear 205 on the right. The second speed gear 205 on the right drives the output gear 208, and the output shaft 207 is driven to rotate through the output gear 208. When the speed needs to be changed, the input shaft 201 is pushed to the right, and the input shaft 201 is rotated to make the input gear 202 mesh with the first speed gear 206 on the left. The motor is started, and the input gear 202 drives the first speed gear 206 on the left to rotate. The second transmission shaft 204 drives the output gear 208 to rotate through the first speed gear 206 on the right. By setting the speed gear, the speed of the output shaft 207 can be changed without changing the motor, so that the conveying speed can be adjusted, which is convenient for conveying various items.

[0027] Combine the slide groove on the inner wall of the auxiliary sleeve 301 with the slider on the outer wall of the spiral blade 303, put the block 302 into the groove on the inner wall of the mounting tube 4 and the outer wall of the auxiliary sleeve 301, rotate the output shaft 207, and the output shaft 207 drives the spiral blade 303 to rotate. Since the position of the auxiliary sleeve 301 is restricted by the block 302, it cannot rotate. The auxiliary sleeve 301 converts the rotation into lateral movement. The slider is combined with the slide groove. After the right wall of the auxiliary sleeve 301 is flush with the right wall of the mounting tube 4, stop rotating the output shaft 207, take out the block 302, and the output shaft 207 rotates through the spiral blade 303 to drive the auxiliary sleeve 301 to rotate. The sleeve 301 rotates, and the material enters the auxiliary sleeve 301 through the mounting tube 4 and the feed port opened on the top of the auxiliary sleeve 301. Since the powder will cause damage to the bearings at the rotating connection, the output shaft 207 rotates to drive the cover plate 304 to rotate. The cover plate 304 is clamped to facilitate the output shaft 207 to drive, and the first buckle 305 and the second buckle 307 rotate through the ball 306. While the cover plate 304 is sealed, it can also be more convenient to rotate through the roller and the second buckle 307. The second buckle 307 is fixedly connected to the mounting tube 4 through the fixing plate 308, which effectively prevents the powder from accidentally penetrating into the rotating part during transportation.

Claims

1. A screw conveyor transmission system with a bearing protection mechanism, comprising a gear box (1), characterized in that: A speed change mechanism (2) is movably mounted on the inner wall of the gear box (1); a sealing mechanism (3) is sleeved on the outer wall of the speed change mechanism (2); a mounting tube (4) is mounted on the outer wall of the sealing mechanism (3); and the mounting tube (4) is arranged on the right side of the gear box (1); The sealing mechanism (3) comprises an auxiliary sleeve (301), a clamping block (302), a spiral blade (303), a cover plate (304), a first clamping buckle (305), a ball bearing (306), a second clamping buckle (307) and a fixing plate (308); the spiral blade (303) is sleeved on the outer wall of the speed change mechanism (2); a slider is provided at the edge of the spiral blade (303); a sliding groove is provided on the inner wall of the auxiliary sleeve (301); the spiral blade (303) is slidably connected to the auxiliary sleeve (301) via the slider; the cover plate (304) is connected to the first clamping buckle (305) and the second clamping buckle (307) and the fixing plate (308); The second buckle (305) is engaged with the fixing plate (308), the fixing plate (308) is mounted on the left end of the mounting tube (4), the second buckle (307) is engaged with the fixing plate (308), the second buckle (307) is connected to the speed change mechanism (2) via a first bearing, the ball (306) is arranged between the first buckle (305) and the second buckle (307), the outer wall of the auxiliary sleeve (301) and the inner wall of the mounting tube (4) are symmetrically provided with slots, the block (302) is arranged on the inner wall of the slot, and the tops of the mounting tube (4) and the auxiliary sleeve (301) are both provided with feed ports.

2. The screw conveyor transmission system with a bearing protection mechanism according to claim 1, characterized in that: The inner wall of the cover plate (304) is provided with a mounting groove, the left side of the cover plate (304) is connected with a positioning block, the left side of the first clip (305) is provided with a positioning groove, the positioning groove is clipped with the positioning block, the outer wall of the first clip (305) is provided with an annular groove, and a gap is set between the outer wall of the first clip (305) and the inner wall of the mounting tube (4).

3. The screw conveyor transmission system with a bearing protection mechanism according to claim 1, characterized in that: The outer wall of the second buckle (307) is connected to the inner wall of the mounting tube (4); the second buckle (307) and the left end of the mounting tube (4) are both provided with a fixing groove; the right end of the fixing plate (308) is connected to a fixing block; and the fixing plate (308) is clamped in the fixing groove.

4. The screw conveyor transmission system with a bearing protection mechanism according to claim 1, characterized in that: The sliding groove provided on the inner wall of the auxiliary sleeve (301) is spirally provided, and the clamping grooves provided on the outer wall of the auxiliary sleeve (301) and the inner wall of the mounting tube (4) are transversely provided.

5. The screw conveyor transmission system with a bearing protection mechanism according to claim 1, characterized in that: The speed change mechanism (2) comprises an input shaft (201), an input gear (202), a first transmission shaft (203), a second transmission shaft (204), a second speed change gear (205), a first speed change gear (206), an output shaft (207) and an output gear (208); the output shaft (207) is connected to the inner wall of the second bearing via a spline; the outer wall of the second bearing is connected to the gear box (1); the input gear (202) is sleeved on the outer wall of the input shaft (201); the left and right ends of the first transmission shaft (203) and the second transmission shaft (204) respectively penetrate the left and right ends of the gear box (1); The two ends are connected to the gear box (1) through a third bearing, the number of the second speed gear (205) and the number of the first speed gear (206) are both two, the two second speed gears (205) and the first speed gear (206) are both arranged side by side on the left and right, the two second speed gears (205) are both sleeved on the outer wall of the first transmission shaft (203), the two first speed gears (206) are both sleeved on the outer wall of the second transmission shaft (204), the output shaft (207) passes through the right end of the gear box (1) and extends to the inner wall of the gear box (1), and the output gear (208) is sleeved on the outer wall of the output end.

6. The screw conveyor transmission system with a bearing protection mechanism according to claim 5, characterized in that: The outer wall of the output shaft (207) is connected to a mounting rod, the output shaft (207) is connected to the cover plate (304) via the mounting rod, the output shaft (207) is connected to the second buckle (307) via a first bearing, and the spiral blade (303) is mounted on the outer wall of the output shaft (207).

7. The screw conveyor transmission system with a bearing protection mechanism according to claim 5, characterized in that: The first speed gear (206) on the left side is arranged on the right side of the second speed gear (205) on the left side, and the first speed gear (206) and the second speed gear (205) on the right side are both meshed with the output gear (208), and the number of teeth of the first speed gear (206) is greater than the number of teeth of the second speed gear (205).

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