Mixture spiral conveying equipment and method

Abstract

The invention relates to the technical field of spiral conveying equipment, and discloses mixed material spiral conveying equipment and method.The mixed material spiral conveying equipment comprises a conveying mechanism which is arranged below a liquid outlet of a pot body, and the conveying mechanism comprises a groove body and a spiral rod installed in the groove body; the transmission assembly is in transmission connection with the screw rod, the transmission assembly comprises a driven wheel mounted on the screw rod and a driving wheel connected with the driven wheel, and friction plates are mounted on the driven wheel and the driving wheel; the driving part comprises a conveying motor and a transmission connected with the conveying motor, the transmission is connected with an output shaft, and the driving wheel is installed on the output shaft; the adjusting assembly is connected with and drives the driven wheel to get close to or away from the driving wheel; the speed measuring mechanism is connected with the screw rod or the output shaft and used for measuring the rotating speed of the driven wheel or the driving wheel. According to the feeding mechanism, multiple times of starting and stopping of the driving part can be avoided in the multiple times of debugging process, the driving part is effectively protected, and the problem that the feeding mechanism is difficult to maintain and debug is solved.

Description

Technical Field

[0001] The invention relates to the technical field of screw conveying equipment, and in particular to a mixed material screw conveying equipment and method. Background Art

[0002] In some production processes, it is necessary to transport a mixture formed by mixing solid materials and liquid materials. A screw conveying device can be used to transport the above mixture to avoid the solid materials from being concentrated and accumulated in a certain part of the liquid materials, so as to ensure the uniformity of the mixture. The existing screw conveying device includes a feeding mechanism, a group of symmetrical feeding mechanisms and a dust cleaning device. The feeding mechanism includes a feeding barrel, a threaded rod and a group of L-shaped slide plates. The front side of the feeding barrel is penetrated by a threaded rod, and a first baffle is fixedly installed on one end face of the threaded rod located outside the feeding barrel. A fixed plate is fixedly installed on one end face of the threaded rod located inside the feeding barrel. L-shaped slide plates, first fixed columns and second fixed columns are penetrated on both sides of the feeding barrel. One end face of the first fixed column and the second fixed column are fixedly connected to an inner wall of the L-shaped slide plate. A first spring is transversely installed between an inner wall of the L-shaped slide plate and an inner wall of the feeding barrel. By setting a feeding mechanism, the screw conveying device can increase the distance between the two L-shaped slide plates under the drive of the fixed plate, and reduce the distance between the two L-shaped slide plates under the action of the first spring, thereby changing the feed amount.

[0003] The existing screw conveying equipment has the following problems: when the threaded rod of the feeding mechanism is overloaded, the speed of the drive motor connected to the threaded rod is too low, causing the drive motor to overheat and thus accelerate the aging of the coil, making it difficult to maintain and debug the feeding mechanism.

[0004] Based on the above situation, there is an urgent need for a mixed material screw conveying device to solve the problem that it is difficult to maintain and debug the feeding mechanism. Summary of the invention

[0005] The purpose of the present invention is: for existing spiral conveying equipment, when the load of the threaded rod of the feeding mechanism is too large, the speed of the driving motor connected to the threaded rod is too low, causing the driving motor to overheat and thus accelerate the aging of the coil, making it difficult to maintain and debug the feeding mechanism, thereby solving the problem of difficulty in maintaining and debugging the feeding mechanism.

[0006] The technical solution of the present invention is as follows: In one aspect, the present invention provides a mixed material screw conveying device, comprising: A conveying mechanism is arranged below the liquid discharge port of the pot body, and the conveying mechanism comprises a trough body and a spiral rod installed in the trough body; A transmission assembly is connected to the screw rod in transmission, the transmission assembly comprises a driven wheel mounted on the screw rod and a driving wheel connected to the driven wheel, and friction plates are mounted on both the driven wheel and the driving wheel; A driving part, comprising an output shaft and the driving wheel is mounted on the output shaft; An adjusting component is connected to drive the driven wheel to move closer to or away from the driving wheel; The speed measuring mechanism is connected to the screw rod or the output shaft and is used to measure the rotation speed of the driven wheel or the driving wheel.

[0007] In the existing screw conveying equipment, when the load of the threaded rod of the feeding mechanism is too large, the speed of the driving motor connected to the threaded rod is too low, which causes the driving motor to overheat and accelerates the aging of the coil, making it difficult to maintain and debug the feeding mechanism. In this solution, the output shaft on the driving part drives the driving wheel to rotate, and then drives the driven wheel and the screw rod to rotate synchronously. When the load of the screw rod is too large or other abnormal conditions occur, the friction plates on the driven wheel and the driving wheel will slip. At this time, the speed measuring mechanism can measure the different speeds of the driven wheel and the driving wheel, and then control the adjusting component to drive the driven wheel away from the driving wheel, and the conveying mechanism is shut down for maintenance. After the maintenance is completed, the driven wheel is driven by the adjusting component to approach and press against the driving wheel, so as to facilitate the debugging of the conveying mechanism until the screw rod rotates normally. This can avoid the driving part from starting and stopping multiple times during multiple debugging processes, effectively protect the driving part, and solve the problem of difficulty in maintaining and debugging the feeding mechanism.

[0008] Furthermore, the present solution does not solely limit the specific structure of the adjusting assembly. One feasible solution is: the adjusting assembly includes a movable shaft seat and a shaft sleeve installed on the movable shaft seat, a prism is formed on the screw rod and the prism is arranged in the shaft sleeve, and the driven wheel is connected to the shaft sleeve. When this solution is adopted, the shaft sleeve and the driven wheel are driven to move along the axial direction of the screw rod by the movable shaft seat, thereby making the driven wheel approach or move away from the driving wheel.

[0009] Furthermore, in order to facilitate the adjustment of the maximum static friction between the driven wheel and the driving wheel, one feasible solution is: the movable shaft seat is connected to a cylinder and the cylinder is installed on the trough body. When this solution is adopted, the movable shaft seat is pushed by the cylinder, and the pre-pressure generated between the driven wheel and the driving wheel can be adjusted by adjusting the air pressure in the cylinder, thereby adjusting the maximum static friction between the driven wheel and the driving wheel. When the screw rod load is greater than the above-mentioned maximum static friction, slippage occurs between the driven wheel and the driving wheel.

[0010] Furthermore, the present invention does not limit the specific structure of the speed measuring mechanism. One feasible solution is: the speed measuring mechanism includes cams respectively installed on the output shaft and the screw rod, and a follower in contact with the cam, the follower is connected to a converter for converting a mechanical signal into an electrical signal, and the converter is electrically connected to an external analysis device. When this solution is adopted, the cam can drive the corresponding follower to move back and forth during the rotation of the driven wheel and the driving wheel, and the mechanical signal of the follower is converted into an electrical signal by the converter for analysis to obtain the rotation speed of the driven wheel and the driving wheel, which has high reliability.

[0011] Furthermore, the present solution does not limit the specific structure of the converter. One feasible solution is: the converter includes a resistance coil in contact with the follower, a spring is installed in the resistance coil and the spring is used to push the follower toward the cam. When this solution is adopted, the spring can make the follower always press against the cam, and as the cam rotates, the contact point between the follower and the resistance coil changes continuously.

[0012] Furthermore, the present solution does not limit the specific structure of the follower. One feasible solution is: the follower includes a movable rod and a roller installed on the movable rod, the roller is in contact with the cam, and a protrusion in contact with the resistance ring is formed on the movable rod. When this solution is adopted, the wear between the roller and the cam can be reduced.

[0013] Furthermore, in order to facilitate the adjustment of the flow rate of the mixture, one feasible solution is: a feed hopper is installed on the conveying mechanism, and two inclined movable plates are installed on the feed hopper, and the movable plates are used to adjust the flow rate of the feed hopper. When this solution is adopted, the flow rate of the mixture in the feed hopper can be adjusted conveniently and quickly by adjusting the position of the movable plates, so as to match the transportation volume of the screw rod.

[0014] On the other hand, the present invention also provides a mixed material spiral conveying method, comprising: Open the drain valve on the pot body to allow the mixed material to flow into the conveying mechanism; During the operation of the conveying mechanism, the speed of the driving wheel is monitored separately. v 1 and the speed of the driven wheel v 2 ; like v 1 and v 2 If the ratio exceeds the preset range or the difference exceeds the preset range, the driving wheel and the driven wheel are separated and the conveying mechanism is maintained; After the maintenance of the conveying mechanism is completed, the driving wheel and the driven wheel are re-contacted and debugged.

[0015] By monitoring and comparing the rotational speeds of the driving wheel and the driven wheel, the driven wheel can be moved away from the driving wheel in a timely manner when slippage occurs between the driving wheel and the driven wheel.

[0016] Furthermore, the present invention does not limit the method for monitoring the rotation speed of the driving wheel and the driven wheel. One feasible method is: v 1 and the speed of the driven wheel v 2 ,include: The driving wheel and the driven wheel generate corresponding periodic mechanical signals, and the mechanical signals are converted into corresponding voltage signals and transmitted to the oscilloscope; The voltage signals corresponding to the driving wheel and the driven wheel are analyzed by an oscilloscope and the corresponding rotation speed is calculated.

[0017] The use of an oscilloscope can convert the voltage signal generated during the rotation of the driving wheel and the driven wheel into a visible waveform, which can intuitively display the change process of the voltage signal. The electron beam inertia of the oscilloscope is small, and it can display fast processes at the nanosecond level. It can simultaneously display the voltage signals corresponding to the driving wheel and the driven wheel on the same fluorescent screen.

[0018] Furthermore, the present solution does not limit the calculation method of the rotation speed of the driving wheel and the driven wheel. One feasible solution is: the method of analyzing the voltage signals corresponding to the driving wheel and the driven wheel by an oscilloscope and calculating the corresponding rotation speed includes: Record the occurrence time of each peak or trough formed by the voltage signal corresponding to the driving wheel or the driven wheel; Calculate the time interval between two adjacent wave crests or wave troughs to obtain the time required for the driving wheel or driven wheel to rotate one circle and convert it into the corresponding speed.

[0019] Through the vertical control system of the oscilloscope, the corresponding moment of the peak or trough can be obtained conveniently and quickly, and the rotation speed of the driving wheel or the driven wheel can be calculated.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The output shaft on the driving part drives the driving wheel to rotate, and then drives the driven wheel and the screw rod to rotate synchronously. When the load of the screw rod is too large or other abnormal conditions occur, the friction plates on the driven wheel and the driving wheel will slip. At this time, the speed measuring mechanism can measure the different speeds of the driven wheel and the driving wheel, and then control the adjustment component to drive the driven wheel away from the driving wheel, and the conveying mechanism is stopped for maintenance. After the maintenance, the adjustment component drives the driven wheel to approach and press against the driving wheel, which is convenient for debugging the conveying mechanism until the screw rod rotates normally. It can avoid the driving part from starting and stopping multiple times during multiple debugging processes, effectively protect the driving part, and solve the problem of difficulty in maintaining and debugging the feeding mechanism; Second, since the movable shaft seat is connected to a cylinder and the cylinder is installed on the tank body, the movable shaft seat is pushed by the cylinder. By adjusting the air pressure in the cylinder, the size of the pre-pressure generated between the driven wheel and the driving wheel can be adjusted, thereby adjusting the maximum static friction between the driven wheel and the driving wheel. When the load of the screw rod is greater than the above-mentioned maximum static friction, slippage occurs between the driven wheel and the driving wheel; 3. Since the speed measuring mechanism includes cams respectively installed on the output shaft and the screw rod, and a follower in contact with the cam, the follower is connected to a converter for converting a mechanical signal into an electrical signal, and the converter is electrically connected to an external analysis device, the cam can drive the corresponding follower to move back and forth during the rotation of the driven wheel and the driving wheel, and the mechanical signal of the follower is converted into an electrical signal by the converter for analysis to obtain the rotation speed of the driven wheel and the driving wheel, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall first viewing angle structure of the first embodiment of the present invention; Figure 2 It is a schematic diagram of the overall second viewing angle structure of the first embodiment of the present invention and its partial enlarged diagram; Figure 3 It is a schematic diagram of the structure of the conveying mechanism of the first embodiment of the present invention and a partial enlarged diagram thereof; Figure 4 This is a schematic diagram of the structure of a driving unit in accordance with a first embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a speed measuring component in accordance with the first embodiment of the present invention; Figure 6 A schematic diagram of the structure of a follower and a partial enlarged diagram thereof in accordance with the first embodiment of the present invention; Figure 7 A cross-sectional view of a converter according to a first embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a feed hopper in Embodiment 1 of the present invention; Fig. 9 It is a cross-sectional view of a feed hopper in Embodiment 1 of the present invention; Fig.10 This is a flow chart of embodiment 2 of the present invention.

[0022] Reference numerals: 1. Conveying mechanism; 2. Transmission assembly; 3. Driving unit; 4. Adjustment assembly; 5. Speed ​​measuring mechanism; 6. Feed hopper; 11. trough body; 12. spiral rod; 13. prism; 21. Driven wheel; 22. Driving wheel; 23. Friction plate; 31. Output shaft; 32. Transmission; 33. Conveying motor; 41. movable shaft seat; 42. shaft sleeve; 43. cylinder; 51. Cam; 52. Follower; 53. Converter; 521, movable rod; 522, roller; 523, bump; 531, resistance coil; 532, spring; 61. movable plate; 62. gear; 63. first bevel gear; 64. second bevel gear; 65. rotating shaft; 66. hand wheel; 611. Rack. DETAILED DESCRIPTION

[0023] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0024] As described in the background technology, the existing screw conveying equipment has the following problems: When the threaded rod of the feeding mechanism is overloaded, the speed of the driving motor connected to the threaded rod is too low, causing the driving motor to overheat and thus accelerating the aging of the coil, making it difficult to maintain and debug the feeding mechanism. Based on this reason, the present invention provides the following embodiments.

[0025] Embodiment 1: Please refer to Figure 1 , Figure 2 and Figure 3, this embodiment provides a mixed material screw conveying device, comprising: The conveying mechanism 1 is arranged below the drain port of the pot body, and the conveying mechanism 1 comprises a tank body 11 and a screw rod 12 installed in the tank body 11; The transmission assembly 2 is connected to the screw rod 12 in transmission. The transmission assembly 2 includes a driven wheel 21 installed on the screw rod 12 and a driving wheel 22 connected to the driven wheel 21. The driven wheel 21 and the driving wheel 22 are both installed with friction plates 23. The driving part 3 includes a conveying motor 33 and a transmission 32 connected to the conveying motor 33, the transmission 32 is connected to an output shaft 31 and the driving wheel 22 is mounted on the output shaft 31; The adjusting component 4 is connected to drive the driven wheel 21 to move closer to or away from the driving wheel 22; The speed measuring mechanism 5 is connected to the screw rod 12 or the output shaft 31 and is used to measure the speed of the driven wheel 21 or the driving wheel 22; The conveying mechanism 1, the driving unit 3 and the speed measuring mechanism 5 are all installed on a supporting seat (not shown in the figure).

[0026] In the existing screw conveying equipment, when the threaded rod of the feeding mechanism is overloaded, the speed of the driving motor connected to the threaded rod is too low, resulting in overheating of the driving motor and accelerated aging of the coil, making it difficult to maintain and debug the feeding mechanism. In this solution, the output shaft 31 on the driving part 3 drives the driving wheel 22 to rotate, thereby driving the driven wheel 21 and the screw rod 12 to rotate synchronously. When the load of the screw rod 12 is too large or other abnormal conditions occur, the friction plates 23 on the driven wheel 21 and the driving wheel 22 will slip. At this time, the speed measuring mechanism 5 can measure that the speed of the driven wheel 21 is different from that of the driving wheel 22, and then the adjusting component 4 is controlled to drive the driven wheel 21 away from the driving wheel 22, and the conveying mechanism 1 is shut down for maintenance. After the maintenance is completed, the driven wheel 21 is driven by the adjusting component 4 to approach and press against the driving wheel 22, so as to facilitate the debugging of the conveying mechanism 1 until the screw rod 12 rotates normally. The driving part 3 can be avoided from being started and stopped multiple times during multiple debugging processes, effectively protecting the driving part 3, and solving the problem of difficulty in maintaining and debugging the feeding mechanism.

[0027] Reference Figure 3 This solution does not limit the specific structure of the adjustment component 4. One feasible solution is: the adjustment component 4 includes a movable shaft seat 41 and a sleeve 42 installed on the movable shaft seat 41, a prism 13 is formed on the screw rod 12 and the prism 13 is arranged in the sleeve 42, and the driven wheel 21 is connected to the sleeve 42. When this solution is adopted, the sleeve 42 and the driven wheel 21 are driven to move along the axial direction of the screw rod 12 by the movable shaft seat 41, so that the driven wheel 21 is close to or away from the driving wheel 22.

[0028] In order to facilitate the adjustment of the maximum static friction between the driven wheel 21 and the driving wheel 22, one feasible solution is: the movable shaft seat 41 is connected to the cylinder 43 and the cylinder 43 is installed on the trough body 11. When this solution is adopted, the movable shaft seat 41 is pushed by the cylinder 43. By adjusting the air pressure in the cylinder 43, the size of the pre-pressure generated between the driven wheel 21 and the driving wheel 22 can be adjusted, and then the maximum static friction between the driven wheel 21 and the driving wheel 22 can be adjusted. When the load of the screw rod 12 is greater than the above-mentioned maximum static friction, slippage occurs between the driven wheel 21 and the driving wheel 22.

[0029] Reference Figure 3 , Figure 4 and Figure 5 The present invention does not limit the specific structure of the speed measuring mechanism 5. One feasible solution is that the speed measuring mechanism 5 includes a cam 51 respectively mounted on the output shaft 31 and the screw rod 12, and a follower 52 in contact with the cam 51. The follower 52 is connected with a converter 53 for converting a mechanical signal into an electrical signal. The converter 53 is electrically connected to an external analysis device. When this solution is adopted, the cam 51 can drive the corresponding follower 52 to reciprocate during the rotation of the driven wheel 21 and the driving wheel 22, and the mechanical signal of the follower 52 is converted into an electrical signal by the converter 53 for analysis to obtain the rotation speed of the driven wheel 21 and the driving wheel 22, which has high reliability.

[0030] Reference Figure 7 This solution does not limit the specific structure of the converter 53. One feasible solution is: the converter 53 includes a resistor coil 531 in contact with the follower 52, and a spring 532 is installed in the resistor coil 531. The spring 532 is used to push the follower 52 toward the cam 51. When this solution is adopted, the spring 532 can make the follower 52 always press against the cam 51. As the cam 51 rotates, the contact point between the follower 52 and the resistor coil 531 changes continuously.

[0031] Reference Figure 6 This solution does not limit the specific structure of the follower 52. One feasible solution is: the follower 52 includes a movable rod 521 and a roller 522 installed on the movable rod 521, the roller 522 is in contact with the cam 51, and a protrusion 523 in contact with the resistor ring 531 is formed on the movable rod 521. When this solution is adopted, the wear between the roller 522 and the cam 51 can be reduced.

[0032] Reference Figure 8 and Fig. 9In order to facilitate the adjustment of the flow rate of the mixture, one feasible solution is: a feed hopper 6 is installed on the conveying mechanism 1, and two inclined movable plates 61 are installed on the feed hopper 6, and the movable plates 61 are used to adjust the flow rate of the feed hopper 6. When this solution is adopted, the flow rate of the mixture in the feed hopper 6 can be adjusted conveniently and quickly by adjusting the position of the movable plates 61, so as to match the transportation volume of the screw rod 12.

[0033] The present solution does not limit the driving structure of the movable plate 61. One feasible solution is that a rack 611 is formed on the movable plate 61 and the rack 611 is meshed with a gear 62, and the two gears 62 are connected in transmission. When this solution is adopted, since the mechanical structure drives the movable plate 61, it has high reliability and is not prone to damage and failure during use.

[0034] This solution does not limit the transmission structure of the two gears 62. One feasible solution is: the gear 62 is connected to the first bevel gear 63 and the first bevel gear 63 is meshed with the second bevel gear 64. The two second bevel gears 64 are both installed on the rotating shaft 65. When this solution is adopted, since the gear transmission structure is compact and the transmission ratio is constant, the two movable plates 61 can be moved synchronously by rotating the rotating shaft 65.

[0035] In order to facilitate the rotation of the rotating shaft 65 , one feasible solution is that a hand wheel 66 is installed on the rotating shaft 65 . When this solution is adopted, the rotating shaft 65 can be rotated conveniently and quickly by operating the hand wheel 66 .

[0036] Embodiment 2: Reference Fig.10 , this embodiment provides a mixed material spiral conveying method, comprising: S100, opening the drain valve on the pot body to allow the mixed material to flow into the conveying mechanism; S200: During the operation of the conveying mechanism, the speed of the driving wheel is monitored respectively. v 1 and the speed of the driven wheel v 2 ; S300, if v 1 and v 2 If the ratio exceeds the preset range or the difference exceeds the preset range, the driving wheel and the driven wheel are separated and the conveying mechanism is maintained; S400: After the maintenance of the conveying mechanism is completed, the driving wheel and the driven wheel are brought into contact again and debugged.

[0037] By monitoring and comparing the rotational speeds of the driving wheel and the driven wheel, the driven wheel can be moved away from the driving wheel in a timely manner when slippage occurs between the driving wheel and the driven wheel.

[0038] This solution does not limit the monitoring method of the speed of the driving wheel and the driven wheel. One feasible solution is to monitor the speed of the driving wheel. v 1 and the speed of the driven wheel v 2 ,include: The driving wheel and the driven wheel generate corresponding periodic mechanical signals, and the mechanical signals are converted into corresponding voltage signals and transmitted to the oscilloscope; The voltage signals corresponding to the driving wheel and the driven wheel are analyzed by an oscilloscope and the corresponding rotation speed is calculated.

[0039] The use of an oscilloscope can convert the voltage signal generated during the rotation of the driving wheel and the driven wheel into a visible waveform, which can intuitively display the change process of the voltage signal. The electron beam inertia of the oscilloscope is small, and it can display fast processes at the nanosecond level. It can simultaneously display the voltage signals corresponding to the driving wheel and the driven wheel on the same fluorescent screen.

[0040] This solution does not limit the calculation method of the rotation speed of the driving wheel and the driven wheel. One feasible solution is: using an oscilloscope to analyze the voltage signals corresponding to the driving wheel and the driven wheel and calculate the corresponding rotation speed, including; Record the occurrence time of each peak or trough formed by the voltage signal corresponding to the driving wheel or the driven wheel; Calculate the time interval between two adjacent wave crests or wave troughs to obtain the time required for the driving wheel or driven wheel to rotate one circle and convert it into the corresponding speed.

[0041] Through the vertical control system of the oscilloscope, the corresponding moment of the peak or trough can be obtained conveniently and quickly, and the rotation speed of the driving wheel or the driven wheel can be calculated.

[0042] In order to solve the problem that it is difficult to maintain and debug the feeding mechanism, in the present solution, the output shaft 31 on the driving part 3 drives the driving wheel 22 to rotate, and then drives the driven wheel 21 and the screw rod 12 to rotate synchronously. When the load on the screw rod 12 is too large or other abnormal conditions occur, the friction plates 23 on the driven wheel 21 and the driving wheel 22 will slip. At this time, the speed measuring mechanism 5 can measure that the speed of the driven wheel 21 is different from that of the driving wheel 22, and then the adjusting component 4 is controlled to drive the driven wheel 21 away from the driving wheel 22, and the conveying mechanism 1 is shut down for maintenance. After the maintenance is completed, the driven wheel 21 is driven by the adjusting component 4 to approach and press against the driving wheel 22, so as to facilitate the debugging of the conveying mechanism 1 until the screw rod 12 rotates normally. This can avoid multiple starts and stops of the driving part 3 during multiple debugging processes, effectively protect the driving part 3, and solve the problem that it is difficult to maintain and debug the feeding mechanism.

[0043] In order to facilitate the adjustment of the maximum static friction between the driven wheel 21 and the driving wheel 22, in the present embodiment, since the movable shaft seat 41 is connected to the cylinder 43 and the cylinder 43 is installed on the groove body 11, the movable shaft seat 41 is pushed by the cylinder 43. By adjusting the air pressure in the cylinder 43, the size of the pre-pressure generated between the driven wheel 21 and the driving wheel 22 can be adjusted, thereby adjusting the maximum static friction between the driven wheel 21 and the driving wheel 22. When the load of the screw rod 12 is greater than the above-mentioned maximum static friction, slippage occurs between the driven wheel 21 and the driving wheel 22.

[0044] In order to monitor the rotational speed of the driven wheel 21 and the driving wheel 22, in the present solution, since the speed measuring mechanism 5 includes a cam 51 respectively mounted on the output shaft 31 and the screw rod 12, and a driven member 52 in contact with the cam 51, the driven member 52 is connected to a converter 53 for converting a mechanical signal into an electrical signal, and the converter 53 is electrically connected to an external analysis device. The cam 51 can drive the corresponding driven member 52 to reciprocate during the rotation of the driven wheel 21 and the driving wheel 22, and the mechanical signal of the driven member 52 is converted into an electrical signal by the converter 53 for analysis to obtain the rotational speed of the driven wheel 21 and the driving wheel 22, and the reliability is high.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mixed material screw conveying device, characterized in that: include: The conveying mechanism is arranged below the liquid discharge port of the pot body, and the conveying mechanism comprises a trough body and a spiral rod installed in the trough body; A transmission assembly is connected to the screw rod in transmission, and the transmission assembly includes a driven wheel mounted on the screw rod and a driving wheel connected to the driven wheel, and friction plates are mounted on both the driven wheel and the driving wheel; A driving part, comprising an output shaft and the driving wheel is mounted on the output shaft; An adjusting component is connected to drive the driven wheel to move closer to or away from the driving wheel; The speed measuring mechanism is connected to the screw rod or the output shaft and is used to measure the rotation speed of the driven wheel or the driving wheel.

2. A mixed material screw conveying device according to claim 1, characterized in that: The adjusting assembly comprises a movable shaft seat and a shaft sleeve mounted on the movable shaft seat, a prism is formed on the spiral rod and the prism is arranged in the shaft sleeve, and the driven wheel is connected to the shaft sleeve.

3. A mixed material screw conveying device according to claim 2, characterized in that: The movable shaft seat is connected with a cylinder, and the cylinder is installed on the tank body.

4. The mixed material screw conveying device according to claim 1, characterized in that: The speed measuring mechanism comprises cams respectively mounted on the output shaft and the screw rod, and a follower in contact with the cam, wherein the follower is connected with a converter for converting a mechanical signal into an electrical signal, and the converter is electrically connected to an external analysis device.

5. The mixed material screw conveying device according to claim 4, characterized in that: The converter comprises a resistance coil in contact with the driven member, a spring is installed in the resistance coil and the spring is used to push the driven member toward the cam.

6. A mixed material screw conveying device according to claim 5, characterized in that: The follower comprises a movable rod and a roller mounted on the movable rod, the roller is in contact with a cam, and a convex block in contact with a resistance coil is formed on the movable rod.

7. The mixed material screw conveying device according to claim 1, characterized in that: A feed hopper is installed on the conveying mechanism, and two inclined movable plates are installed on the feed hopper, and the movable plates are used to adjust the flow rate of the feed hopper.

8. A method for conveying a mixed material by screw conveying, using a mixed material screw conveying device according to any one of claims 1 to 7 to convey the mixed material, characterized in that: include: Open the drain valve on the pot body to allow the mixed material to flow into the conveying mechanism; During the operation of the conveying mechanism, the speed of the driving wheel is monitored separately. v 1 and the speed of the driven wheel v 2 ; like v 1 and v 2 If the ratio exceeds the preset range or the difference exceeds the preset range, the driving wheel and the driven wheel are separated and the conveying mechanism is maintained; After the maintenance of the conveying mechanism is completed, the driving wheel and the driven wheel are re-contacted and debugged.

9. A method for spiral conveying mixed materials according to claim 8, wherein the speed of the monitoring driving wheel is v 1 and the speed of the driven wheel v 2 , characterized in that, include: The driving wheel and the driven wheel generate corresponding periodic mechanical signals, and the mechanical signals are converted into corresponding voltage signals and transmitted to the oscilloscope; The voltage signals corresponding to the driving wheel and the driven wheel are analyzed by an oscilloscope and the corresponding rotation speed is calculated.

10. A mixed material spiral conveying method according to claim 9, wherein the voltage signals corresponding to the driving wheel and the driven wheel are analyzed by an oscilloscope and the corresponding rotation speed is calculated, characterized in that: include; Record the occurrence time of each peak or trough formed by the voltage signal corresponding to the driving wheel or the driven wheel; Calculate the time interval between two adjacent wave crests or wave troughs to obtain the time required for the driving wheel or driven wheel to rotate one circle and convert it into the corresponding speed.

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