A kind of MD dryer worm gear rotation circle number reading device

Abstract

The utility model relates to cigarette equipment technical field discloses a kind of MD dryer worm wheel worm gear rotation circle number reading device, including transmission shaft, the transmission shaft bottom end is worn out MD dryer outside and is fixed with pinion, pinion one side is provided with spur gear, pinion and spur gear meshing drive, the transmission ratio of pinion and spur gear is 1: n, n is the number greater than 7, spur gear edge is provided with scale mark and digital identification. Solve the problem that current detection mode is easy to misjudge, and staff's labor intensity is big.

Description

Technical Field

[0001] This utility model relates to the field of cigarette equipment technology, and in particular to a device for reading the number of rotations of the worm gear in an MD dryer. Background Technology

[0002] In the cigarette factory's production system, the air compressor system is one of the core power sources, and its stable operation is directly related to the process execution effectiveness of key procedures such as tobacco processing, flavoring, and additive addition. As a core piece of equipment for compressed air treatment, the operational reliability of the MD dryer has dual strategic significance for ensuring production continuity and controlling product quality. This equipment drives the molecular sieve adsorption tower to operate periodically through a worm gear transmission mechanism, and the performance degradation of the worm gear transmission system will directly affect the accuracy of compressed air dew point control.

[0003] The current technology relies on manual visual inspection by workers to determine the operating status of the worm gear. Since the drive shaft rotates 5-7 times per hour, the existing detection mechanism has significant technical defects: manual visual inspection requires observing the low-speed rotation of the drive shaft through the observation hole of the outer casing to determine the status. This detection method has two inherent defects: first, the low-speed motion characteristics make visual identification difficult and are prone to misjudgment of rotational stagnation; second, continuous squatting posture increases the labor intensity of workers. Utility Model Content

[0004] This application provides a device for reading the number of rotations of the worm gear in an MD dryer, in order to solve the problems of easy misjudgment and high labor intensity of existing detection methods.

[0005] The technical solution adopted in this application is as follows:

[0006] A device for reading the number of rotations of a worm gear in an MD dryer includes a drive shaft. The bottom end of the drive shaft extends out of the MD dryer and is fixedly fitted with a small gear. A large gear is provided on one side of the small gear. The small gear and the large gear mesh and drive each other. The transmission ratio between the small gear and the large gear is 1:n, where n is a number greater than 7. The edge of the large gear is provided with scale markings.

[0007] By setting up the above structure, the drive shaft is extended outside the equipment, allowing staff to observe whether the drive shaft is rotating intuitively, efficiently, and clearly. Through the meshing of the large and small gears, staff can read the scale and numerical markings on the large gear and calculate the number of revolutions per hour of the small gear by the transmission ratio between the large and small gears, thereby determining whether the worm gear is operating normally.

[0008] Furthermore, a column is fixedly mounted on the MD dryer, and a sleeve is rotatably fitted on the column. A large gear is fixedly fitted on one end of the sleeve, and a ball counting mechanism is provided on the outside of the large gear. The ball counting mechanism includes a ball storage area and a ball receiving area. The ball storage area stores a number of metering balls, and the ball storage area and the ball receiving area are connected. A triggering mechanism is provided between the other end of the sleeve and the ball counting mechanism. When the large gear rotates one revolution, the triggering mechanism causes the ball storage area to release a ball to the ball receiving area.

[0009] Furthermore, the ball storage area includes a ball storage funnel, and the triggering mechanism includes a support plate, a transmission assembly, and a blocking assembly. The ball storage funnel is vertically inserted through one end of the support plate, and the other end of the support plate is fixedly connected to the column.

[0010] The blocking assembly includes two baffles spaced apart along the axial direction of the ball storage funnel. The two baffles are staggered in the left-right direction of the ball storage funnel. The distance between the two baffles is equal to the diameter of the metering ball. Both baffles are fixedly installed at one end of the transmission assembly, and the other end of the transmission assembly is connected to the sleeve.

[0011] Furthermore, when the baffle on the left side of the ball storage funnel moves to the first position, the baffle on the left side of the ball storage funnel abuts and limits the metering ball inside the ball storage funnel, and the baffle on the right side of the ball storage funnel moves to the second position and does not contact the metering ball inside the ball storage funnel.

[0012] When the baffle on the left side of the ball storage funnel moves to the second position, the baffle on the left side of the ball storage funnel does not contact the metering ball inside the ball storage funnel, and the baffle on the right side of the ball storage funnel moves to the first position and abuts and limits the metering ball inside the ball storage funnel.

[0013] Furthermore, the transmission assembly includes a cam, a transmission rod, and a mounting plate. There are two mounting plates, which are installed parallel to each other on the support plate. The transmission rod slides radially through the two mounting plates along the ball storage funnel. The cam is fixedly fitted on the end of the sleeve away from the large gear. One end of the transmission rod contacts the edge of the cam, and a connecting ring is fixedly fitted on the other end of the transmission rod. One end of the baffle is fixedly connected to the connecting ring. A spring is fitted on the surface of the transmission rod, and the spring is located between the two mounting plates. The two ends of the spring are respectively connected to the mounting plates.

[0014] Furthermore, the ball receiving area includes a ball receiving box located below the ball storage funnel, the ball receiving box being used to collect metering balls released from the ball storage funnel.

[0015] Furthermore, the column has an axial cavity inside, which extends through the top of the column. A mounting column is rotatably installed inside the cavity. The top of the mounting column is equipped with a pointer that cooperates with the scale markings. A locking device is provided between the mounting column and the column.

[0016] Furthermore, the locking component includes a retaining ring and a bolt. The retaining ring is fixedly fitted onto the top of the column. The retaining ring has a threaded hole for the bolt to pass through. The side wall of the column has a through hole for the bolt to pass through. One end of the bolt passes through the threaded hole and the through hole in sequence and abuts against the outer side wall of the mounting column.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Extending the drive shaft outside the equipment allows staff to directly, efficiently, and clearly observe whether the drive shaft is rotating, thus determining whether the worm gear is transmitting power. Starting at a specific moment, the scale markings at the intersection of the large and small gears and their corresponding numerical labels are read. After one hour, the scale markings and numerical labels at the intersection of the large and small gears are read again to calculate the number of degrees the large gear rotated in one hour. The standard number of rotations of the drive shaft is 5-7 revolutions per hour. The transmission ratio between the small and large gears is set to 1:n, where n is a number greater than 7. If the large gear rotates more than one revolution, the worm gear transmission is considered abnormal; if the large gear rotates less than one revolution, and the calculated small gear rotation is 5-7 revolutions, the worm gear transmission is considered normal. Attached Figure Description

[0019] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0020] Figure 1 This is a schematic diagram of the installation structure of a worm gear rotation count reading device for an MD dryer according to this utility model;

[0021] Figure 2 This is a partial structural diagram of a worm gear rotation count reading device for an MD dryer according to this utility model. Figure 1 ;

[0022] Figure 3 This is a partial structural diagram of a worm gear rotation count reading device for an MD dryer according to this utility model. Figure 2 ;

[0023] Figure 4 yes Figure 3 The front view.

[0024] In the above attached diagram: 1. MD dryer; 2. Drive shaft; 3. Pinion; 4. Gear; 5. Scale markings; 6. Pointer; 7. Weight reduction hole; 8. Column; 9. Mounting column; 10. Locking element; 11. Fixing ring; 12. Ball storage funnel; 13. Support plate; 14. Sleeve; 15. Baffle; 16. Fixing rod; 17. Connecting ring; 18. Drive rod; 19. Mounting plate; 20. Spring; 21. Through groove; 22. Ball receiving box; 23. Connecting rod; 24. Support leg; 25. Cam. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable for those skilled in the art that some well-known mechanisms and their descriptions may be omitted in the figures.

[0026] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the figures are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. In the description of this application, terms such as "first", "second", etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figure 1-4As shown, this application provides a device for reading the rotation count of a worm gear in an MD dryer. It includes a drive shaft 2, with a small gear 3 fixedly mounted on the bottom end of the drive shaft 2 outside the MD dryer 1. A large gear 4 is rotatably mounted on one side of the small gear 3 in the MD dryer 1. The small gear 3 and the large gear 4 mesh and transmit power. The transmission ratio between the small gear 3 and the large gear 4 is 1:n, where n is a number greater than 7. The edge of the large gear 4 is provided with scale markings 5 ​​and numerical markings (not shown in the figure). In this embodiment, the scale markings 5 ​​are arranged circumferentially along the edge of the large gear 4, with one scale marking 5 representing 1°. Every ten scale markings 5 ​​correspond to one numerical marking. The specific arrangement can be referenced from a protractor. In this embodiment, the transmission ratio between the small gear 3 and the large gear 4 is 1:10, meaning that for every ten rotations of the small gear 3, the large gear 4 rotates one rotation; for every one rotation of the small gear 3, the large gear 4 rotates 36°.

[0028] A column 8 is detachably connected to the MD dryer 1. A connecting rod 23 is located at the bottom of the column 8. The free end of the connecting rod 23 is fixedly connected to the support leg 24 of the MD dryer 1 via bolts, ensuring the column 8 is stably installed on the MD dryer 1. The column 8 is vertically oriented, and a sleeve 14 is rotatably mounted on it via bearings. A large gear 4 is fixedly mounted on the top of the sleeve 14. A ball counting mechanism is located outside the large gear 4. The ball counting mechanism includes a ball storage area and a ball receiving area. The ball storage area stores several metering balls, and the ball storage area and the ball receiving area are connected. A trigger mechanism is located between the bottom end of the sleeve 14 and the ball counting mechanism. When the large gear 4 rotates one revolution, the trigger mechanism causes the ball storage area to release a ball into the ball receiving area.

[0029] The ball storage area includes a ball storage funnel 12, which is vertically arranged. The triggering mechanism includes a support plate 13, a transmission assembly, and a blocking assembly. The ball storage funnel 12 is fixedly inserted through one end of the support plate 13, and the other end of the support plate 13 is fixedly connected to the column 8. In this embodiment, the support plate 13 is arranged radially along the column 8. The blocking assembly includes two baffles 15 spaced apart along the axial direction of the ball storage funnel 12. The two baffles 15 are staggered in the left-right direction of the ball storage funnel 12, and the distance between the two baffles 15 is equal to the diameter of a metering ball. Both baffles 15 are fixedly installed at one end of the transmission assembly, and the other end of the transmission assembly is connected to the sleeve 14.

[0030] When the baffle 15 on the left side of the ball storage funnel 12 moves to the first position, the baffle 15 on the left side of the ball storage funnel 12 abuts and limits the metering ball inside the ball storage funnel 12, and the baffle 15 on the right side of the ball storage funnel 12 moves to the second position and does not contact the metering ball inside the ball storage funnel 12; when the baffle 15 on the left side of the ball storage funnel 12 moves to the second position, the baffle 15 on the left side of the ball storage funnel 12 does not contact the metering ball inside the ball storage funnel 12, and the baffle 15 on the right side of the ball storage funnel 12 moves to the first position and abuts and limits the metering ball inside the ball storage funnel 12. In this embodiment, the inner diameter of the discharge pipe at the bottom of the ball storage funnel 12 is equal to the outer diameter of the metering ball. The side wall of the ball storage funnel 12 is provided with a through groove 21 for the baffle 15 to pass through. When the baffle 15 moves to the first position, the baffle 15 passes through the corresponding through groove 21 and is located inside the ball storage funnel 12, which abuts and limits the metering ball inside the ball storage funnel 12. When the baffle 15 moves to the second position, the baffle 15 is located outside the ball storage funnel 12 and does not contact the metering ball inside the ball storage funnel 12.

[0031] The transmission assembly includes a cam 25, a transmission rod 18, and mounting plates 19. There are two mounting plates 19, which are installed parallel to each other on the support plate 13. The transmission rod 18 slides radially through the two mounting plates 19 along the ball storage funnel 12. The cam 25 is fixedly fitted on the bottom end of the sleeve 14. One end of the transmission rod 18 contacts the edge of the cam 25, and the other end of the transmission rod 18 is fixedly fitted with a connecting ring 17. Both baffles 15 are provided with fixing rods 16, and the baffles 15 are fixedly connected to the connecting rings 17 through the fixing rods 16. A spring 20 is fitted on the surface of the transmission rod 18. The spring 20 is located between the two mounting plates 19, and both ends of the spring 20 are fixedly connected to the mounting plates 19 respectively. The spring 20 ensures that the transmission rod 18 and the cam 25 are always in contact.

[0032] In the above embodiment, the large gear 4 rotates, driving the sleeve 14 and cam 25 to rotate synchronously. The cam 25 pushes the transmission rod 18 to move linearly along the radial direction of the ball storage funnel 12. Under the reset action of the spring 20, the transmission rod 18 reciprocates along the radial direction of the ball storage funnel 12. This reciprocating motion just allows the two baffles 15 to move back and forth between the first position and the second position, respectively. That is, when the large gear 4 rotates once, under the alternating blocking action of the two baffles 15, the ball storage funnel 12 releases a metering ball.

[0033] The ball receiving area includes a ball receiving box 22, which is located directly below the ball storage funnel 12. In this embodiment, the ball receiving box 22 can be placed directly on the workshop floor. The ball receiving box 22 is used to collect the metering balls released from the ball storage funnel 12. By counting the number of metering balls in the ball receiving box 22, the number of rotations of the large gear 4 can be calculated.

[0034] The column 8 has an axial cavity inside, which extends through the top of the column 8. A mounting post 9 is rotatably mounted inside the cavity. A pointer 6, which mates with the scale mark 5, is fixedly mounted on the top of the mounting post 9. In this embodiment, the free end of the pointer 6 extends to the scale mark 5. A locking element 10 is provided between the mounting post 9 and the column 8. The locking element 10 includes a fixing ring 11 and a bolt. The fixing ring 11 is fixedly fitted onto the top of the column 8. The fixing ring 11 has a threaded hole for the bolt to pass through. The side wall of the column 8 has a through hole for the bolt to pass through. One end of the bolt passes through the threaded hole and the through hole in sequence, and abuts against the outer side wall of the mounting post 9, thus locking the mounting post 9 and the column 8. By tightening the bolt, the angle of the pointer 6 can be adjusted, increasing the flexibility of the pointer 6 and ensuring that it is always in a position with good visibility, allowing workers to efficiently, quickly, and intuitively read the mark indicated by the pointer 6. Several weight-reducing holes 7 are evenly distributed along the circumference of the large gear 4, making the large gear 4 lighter.

[0035] Working principle:

[0036] Starting at a certain moment, the staff manually zeroed out the measuring balls in the ball receiving box 22 and poured them into the ball storage funnel 12. They read and recorded the scale indicated by pointer 6. One hour later, the staff first checked whether there were measuring balls in the ball receiving box 22. If there were measuring balls in the ball receiving box 22, the large gear 4 had rotated more than one revolution, indicating an abnormality in the worm gear transmission. If there were no measuring balls in the ball receiving box 22, the large gear 4 had not rotated one revolution. At this time, the staff read and recorded the scale indicated by pointer 6 again and calculated the rotation angle of the large gear 4. Taking the transmission ratio of the small gear 3 and the large gear 4 as 1:10 as a standard, if the rotation angle of the large gear 4 was between 180-250°, the small gear 3 had rotated 5-7 revolutions, indicating that the worm gear transmission was normal.

[0037] The worm gear rotation count reading device provided in this application is easy to use and accurate in detection. When testing multiple MD dryer 1 devices in the workshop, it greatly reduces the labor intensity of the staff and makes the testing highly efficient.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A device for reading the number of revolutions of a worm gear in an MD dryer, installed on an MD dryer, comprising a drive shaft, characterized in that, The bottom end of the drive shaft extends out of the MD dryer and is fixedly fitted with a small gear. The MD dryer has a large gear rotatably mounted on one side of the small gear. The small gear and the large gear mesh and drive each other. The transmission ratio between the small gear and the large gear is 1:n, where n is a number greater than 7. The edge of the large gear is marked with scale markings and numbers.

2. The MD dryer worm gear rotation count reading device according to claim 1, characterized in that, The MD dryer is fixedly equipped with a column, and a sleeve is rotatably fitted on the column. A large gear is fixedly fitted on one end of the sleeve, and a ball counting mechanism is provided on the outside of the large gear. The ball counting mechanism includes a ball storage area and a ball receiving area. The ball storage area stores a number of metering balls, and the ball storage area and the ball receiving area are connected. A triggering mechanism is provided between the other end of the sleeve and the ball counting mechanism. When the large gear rotates one revolution, the triggering mechanism causes the ball storage area to release a ball to the ball receiving area.

3. The MD dryer worm gear rotation count reading device according to claim 2, characterized in that, The ball storage area includes a ball storage funnel, and the triggering mechanism includes a support plate, a transmission assembly, and a blocking assembly. The ball storage funnel is vertically inserted through one end of the support plate, and the other end of the support plate is fixedly connected to a column. The blocking assembly includes two baffles spaced apart along the axial direction of the ball storage funnel. The two baffles are staggered in the left-right direction of the ball storage funnel. The distance between the two baffles is equal to the diameter of the metering ball. Both baffles are fixedly installed at one end of the transmission assembly, and the other end of the transmission assembly is connected to the sleeve.

4. The MD dryer worm gear rotation count reading device according to claim 3, characterized in that, When the baffle on the left side of the ball storage funnel moves to the first position, the baffle on the left side of the ball storage funnel abuts and limits the metering ball inside the ball storage funnel, and the baffle on the right side of the ball storage funnel moves to the second position and does not contact the metering ball inside the ball storage funnel. When the baffle on the left side of the ball storage funnel moves to the second position, the baffle on the left side of the ball storage funnel does not contact the metering ball inside the ball storage funnel, and the baffle on the right side of the ball storage funnel moves to the first position and abuts and limits the metering ball inside the ball storage funnel.

5. The MD dryer worm gear rotation count reading device according to claim 3, characterized in that, The transmission assembly includes a cam, a transmission rod, and mounting plates. There are two mounting plates, which are mounted parallel to each other on a support plate. The transmission rod slides radially through the two mounting plates along the ball storage funnel. The cam is fixedly fitted onto the end of the sleeve away from the large gear. One end of the transmission rod contacts the edge of the cam, and a connecting ring is fixedly fitted onto the other end of the transmission rod. One end of the baffle is fixedly connected to the connecting ring. A spring is fitted onto the surface of the transmission rod, and the spring is located between the two mounting plates. Both ends of the spring are connected to the mounting plates respectively.

6. The MD dryer worm gear rotation count reading device according to claim 3, characterized in that, The ball receiving area includes a ball receiving box located below the ball storage funnel, and the ball receiving box is used to collect metering balls released from the ball storage funnel.

7. The MD dryer worm gear rotation count reading device according to claim 2, characterized in that, The column has an axial cavity inside, which extends through the top of the column. A mounting column is rotatably installed inside the cavity. The top of the mounting column is equipped with a pointer that cooperates with the scale markings. A locking device is provided between the mounting column and the column.

8. The MD dryer worm gear rotation count reading device according to claim 7, characterized in that, The locking component includes a retaining ring and a bolt. The retaining ring is fixedly fitted onto the top of the column. The retaining ring has a threaded hole for the bolt to pass through. The side wall of the column has a through hole for the bolt to pass through. One end of the bolt passes through the threaded hole and the through hole in sequence and abuts against the outer side wall of the mounting column.

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