Integrated conveying structure and control device and method including the structure

Abstract

The present invention relates to an integrated conveying structure and a control device and method including the structure, comprising a first motor having a first shaft and a second motor having a second shaft, wherein the first end of the first shaft is connected to a screw pump rotor through a universal joint, and the screw pump rotor is rotatably arranged in a screw pump stator; the first shaft has a second end connected to the first end of the second shaft, and the second end of the second shaft is rotatably arranged in a shaft mounting seat; a first tube is provided on the outer side of the universal joint, the first tube is connected to a part of the second tube, and the other part of the second tube is connected to a third tube, and the second end of the screw pump stator is connected to a fifth tube through a fourth tube, and the direction of the pipe opening of the fifth tube is opposite to the direction of the pipe opening of the third tube, so as to realize the conveying of raw materials in two opposite directions. By setting the first motor, it can realize the forward and reverse rotation of the screw pump rotor, thereby realizing the forward and reverse conveying of the raw materials, saving the number and installation space of the pump, valve structure and pipeline structure, and reducing the failure rate of the conveying equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying equipment, and in particular to an integrated conveying structure and a control device and method comprising the structure. Background Art

[0002] In the process of raw material transportation, the directions of the transportation pipelines to be arranged are varied, and multiple pipelines are crisscrossed and arranged in a complex manner. In order to realize the opening and closing of the raw materials and control the flow rate of raw material transportation, multiple pumps and valves are also set in the pipelines, which makes the entire transportation structure complicated. Due to the high viscosity of the raw materials, the above-mentioned transportation structure will cause the following problems after long-term use:

[0003] (I) After a long period of raw material transportation, if the raw material itself has a high viscosity, the raw material will inevitably adhere to the inside of the pump and valve, and the raw material will contain impurities, which can easily cause wear on the rotor surface. This wear cannot be compensated, affecting the normal transportation of the raw material.

[0004] (ii) There are many pipelines and their design is complicated, which not only takes up space but also increases the design cost and use cost.

[0005] (III) If the raw material conveying equipment is installed in a remote area, when the raw material conveying equipment control requires operators to go to the remote area to perform it manually, it not only increases the cost of the enterprise, but also wastes time and effort, and increases the labor intensity of the operators. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an integrated conveying structure and a control device and method comprising the structure, so as to solve one or more problems in the prior art.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] An integrated conveying structure and a control device and method including the structure, comprising a first motor having a first shaft and a second motor having a second shaft, wherein the first shaft is movably arranged on the first motor, the second shaft is movably arranged on the second motor, the first end of the first shaft is connected to a screw pump rotor through a universal joint, and the screw pump rotor is rotatably arranged in a screw pump stator; the first shaft has a second end connected to the first end of the second shaft, and the second end of the second shaft is rotatably arranged on a shaft mounting seat; on the outside of the universal joint, a first tube is also connected between the first end of the screw pump stator and the first motor, the first tube is connected to a part of the second tube, and the other part of the second tube is connected to a third tube, and the second end of the screw pump stator is connected to a fifth tube through a fourth tube, and the pipe mouth direction of the fifth tube is opposite to the pipe mouth direction of the third tube, so as to realize the conveying of raw materials in two opposite directions.

[0009] Furthermore, the diameter of an end of the screw pump rotor close to the first motor is larger than the diameter of an end away from the first motor.

[0010] Furthermore, the first motor includes a first shell and a first end cover and a second end cover connected to the ends of the first shell, the first stator is arranged in the first shell, the first rotor is arranged on the inner side of the first stator, a first slot is opened on the first rotor, and the first shaft can move axially along the first slot through a first key.

[0011] Furthermore, a first oil seal and a first bearing are respectively disposed on the outer sides of both ends of the first rotor.

[0012] Furthermore, the second motor includes a second stator and a second rotor arranged inside the second stator. The second rotor has a second groove inside, and the second shaft can move axially along the second groove through a second key.

[0013] Furthermore, second bearings are respectively provided at both ends of the outer side of the second rotor.

[0014] Furthermore, the second shaft has a first cavity inside, a screw is arranged in the first cavity and connected to the second end of the first shaft, and a first section bearing is also arranged on the outside of the first shaft between the first shaft and the second shaft, and a second section bearing is also arranged on the outside of the screw.

[0015] Furthermore, the second motor also includes a third end cover, a second shell, a fourth end cover and a third shell, the first end of the third end cover is connected to the third shell, and the second end of the third end cover is connected to the second end cover; the second shell is located inside the third shell, the first end of the second shell is also connected to the third end cover, the second end of the second shell is connected to the first end of the fourth end cover, and the second end of the fourth end cover is connected to the shaft mounting seat.

[0016] Furthermore, the shaft mounting seat has a mounting groove for accommodating the second shaft, the inner wall of the mounting groove has an internal thread, and the outer side of the second end of the second shaft extending into the mounting groove has an external thread.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0018] The present invention provides a first motor, which can realize forward and reverse rotation of the screw pump rotor, thereby realizing forward and reverse conveying of raw materials, saving the number and installation space of traditional pump structures, valve structures and pipeline structures, and reducing the failure rate of conveying equipment.

[0019] Furthermore, by setting up a second motor, connecting the second shaft to the first shaft, and opening the first groove and the second groove, the second shaft is threadedly connected to the shaft mounting seat, so that the second shaft can move axially after rotation, and transmit power to the first shaft and the screw pump rotor, thereby realizing axial movement of the screw rotor, so as to compensate for the wear in the closed chamber and extend the service life of the screw pump rotor and the screw pump stator.

[0020] Furthermore, by setting a PLC programmable controller module and adopting the method of the present invention, by setting a high torque warning value, a high torque alarm value, a low torque warning value and a low torque alarm value, and realizing remote control of the first motor and the second motor, the rotation speed of the first motor can be controlled so that a safe torque can be maintained. At the same time, the control of the second motor can tighten the fitting clearance between the screw pump rotor and the screw pump stator to achieve the function of compensating the pump efficiency, and the above alarm value information can be downloaded through the server and displayed on the display component to realize remote control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A cross-sectional structural schematic diagram of an integrated conveying structure and a control device and method including the structure according to an embodiment of the present invention is shown.

[0022] Figure 2 The enlarged structure diagram of the integrated conveying structure and the control device and method including the structure according to the embodiment of the present invention is shown. Figure Ⅰ .

[0023] Figure 3 The enlarged structure diagram of the integrated conveying structure and the control device and method including the structure according to the embodiment of the present invention is shown. Figure II .

[0024] Figure 4 A schematic diagram of an integrated conveying structure and a control device and a control device in a method including the structure according to an embodiment of the present invention is shown.

[0025] Figure 5 A schematic diagram of a remote control process of an integrated conveying structure and a control device and method including the structure according to an embodiment of the present invention is shown.

[0026] Markings in the accompanying drawings: 1, first tube; 100, second tube; 101, first tube opening; 2, third tube; 200, second tube opening; 3, fourth tube; 300, third tube opening; 4, fifth tube; 400, fourth tube opening; 401, fifth tube opening; 500, screw pump rotor; 501, screw pump stator; 5010, inner spiral surface; 502, closed chamber; 6, universal joint; 7, first motor; 700, first end cover; 701, first oil seal; 702, first bearing; 703, first housing; 704, first stator; 705, first rotor; 7050, first groove; 706, first key; 707, first sealing ring; 708, first shaft; 709, second end cover; 8, second motor; 800, first Three end covers; 801, second shell; 802, fourth end cover; 803, third shell; 804, screw; 805, first section bearing; 806, second section bearing; 807, second bearing; 808, second rotor; 8080, second groove; 809, second key; 810, second stator; 811, second shaft; 8100, external thread; 8101, first cavity; 812, mounting groove; 813, shaft mounting seat; 8130, internal thread; 900, PLC programmable controller module; 901, first frequency conversion controller; 902, second frequency conversion controller; 903, remote control module; 904, server; 905, display component; 906, torque sensor; 907, flow sensor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0028] Please refer to Figure 1The integrated conveying structure and the control device and method including the structure described in the embodiment of the present invention include a first motor 7 having a first shaft 708 and a second motor 8 having a second shaft 811. The first shaft 708 is movably arranged on the first motor 7, and the second shaft 811 is movably arranged on the second motor 8. The first end of the first shaft 708 is connected to the screw pump rotor 500 through a universal joint 6, and the screw pump rotor 500 is rotatably arranged in the screw pump stator 501. The screw pump stator 501 has a double-line helical surface inside, and its lead is twice that of the screw pump rotor 500. The double-line helical surface and the screw pump rotor 500 have the same rotation direction. When the screw pump rotor 500 rotates relative to the screw pump stator 501, the closed chamber 502 formed between the screw pump stator 501 and the screw pump rotor 500 moves axially, so that the raw material moves from one end to the other end, realizing the mutual conversion of mechanical energy and liquid energy, and then realizing the lifting action. The above raw materials can be crude oil, sludge, gas and any other transportable substances.

[0029] For further information, please continue to refer to Figure 1 , the first shaft 708 has a second end connected to the first end of the second shaft 811, and the second end of the second shaft 811 is rotatably disposed on the shaft mounting seat 813. On the outside of the universal joint 6, the first tube 1 is also connected between the first end of the screw pump stator 501 and the first motor 7, the first tube 1 is connected to a part of the second tube 100, and the other part of the second tube 100 is connected to the third tube 2. The second end of the screw pump stator 501 is connected to the fifth tube 4 through the fourth tube 3, and the direction of the pipe opening of the fifth tube 4 is opposite to the direction of the pipe opening of the third tube 2, so as to realize the conveying of raw materials in two opposite directions.

[0030] For details, please continue to refer to Figure 1 The second tube 100 is opened in a direction perpendicular to the axial direction of the first tube 1. The second tube 100 has a first tube opening 101. One end of the first tube opening 101 is connected to the first tube 1. The other end of the first tube opening 101 is connected to the second tube opening 200 of the third tube 2. The tube opening direction of the third tube 2 away from the second tube opening 200 is Figure 1 The middle one is on the right.

[0031] For further information, please continue to refer to Figure 1 The fourth tube 3 has a third tube opening 300, the third tube opening 300 is opened above the fourth tube 3, the third tube opening 300 is connected to the fifth tube opening 401 of the fifth tube 4, the fifth tube opening 401 is opened below the fifth tube 4, the fifth tube 4 further has a fourth tube opening 400 away from the fifth tube opening 401, and the direction of the fourth tube opening 400 is Figure 1 The middle one is on the left.

[0032] For further information, please refer to Figure 2 The first motor 7 is mainly used to control the rotation of the first shaft 708. Specifically, the first motor 7 includes a first shell 703 and a first end cover 700 and a second end cover 709 connected to the ends of the first shell 703, wherein the first end cover 700 is connected to the left side of the first shell 703, and the second end cover 709 is connected to the right side of the first shell 703.

[0033] For further information, please continue to refer to Figure 2 The first stator 704 is arranged in the first housing 703, the first rotor 705 is arranged on the inner side of the first stator 704, and a first groove 7050 is opened on the first rotor 705. The first groove 7050 is opened along the axial direction of the first rotor 705. The first shaft 708 can move axially along the first groove 7050 through the first key 706, and the first key 706 is installed in the keyway of the first shaft 708.

[0034] In order to support the rotation of the first rotor 705, first bearings 702 are respectively disposed at both ends of the outer side of the first rotor 705. Similarly, in order to ensure that the raw material does not flow into the interior of the first motor 7 and affect the normal operation of the first motor 7, first oil seals 701 are respectively disposed at both ends of the outer side of the first rotor 705, and each of the first oil seals 701 is disposed close to the first bearing 702.

[0035] Further, the specific structure of the second motor 8 is described below:

[0036] Please refer to Figure 3 The second motor 8 includes a second stator 810 and a second rotor 808 arranged inside the second stator 810. The second rotor 808 has a second groove 8080 inside, and the second shaft 811 can move axially along the second groove 8080 through a second key 809.

[0037] For further information, please continue to refer to Figure 3 In order to ensure the flexibility of the second rotor 808, two second bearings 807 are respectively arranged on the outer side of the second rotor 808. Furthermore, a first cavity 8101 is provided inside the second shaft 811, and a screw 804 is arranged in the first cavity 8101 and connected to the second end of the first shaft 708. In order to ensure the independence of the movement of the first shaft 708 and the second shaft 811, a first section bearing 805 and a plurality of first sealing rings 707 are connected between the first shaft 708 and the second shaft 811 and on the outer side of the first shaft 708, and a second section bearing 806 is also arranged on the outer side of the screw 804.

[0038] Furthermore, in order to ensure the service life of the second rotor 808, the second stator 810 and the second shaft 811 and achieve a dust-proof effect, the second motor 8 also includes a third end cover 800, a second shell 801, a fourth end cover 802 and a third shell 803, wherein the first end of the third end cover 800 is connected to the third shell 803, and the second end of the third end cover 800 is connected to the second end cover 709; the second shell 801 is located inside the third shell 803, the first end of the second shell 801 is also connected to the third end cover 800, the second end of the second shell 801 is connected to the first end of the fourth end cover 802, and the second end of the fourth end cover 802 is connected to the shaft mounting seat 813.

[0039] Furthermore, the shaft mounting seat 813 has a mounting groove 812 for accommodating the second shaft 811, the inner wall of the mounting groove 812 has an internal thread 8130, and the outer side of the second end of the second shaft 811 extending into the mounting groove 812 has an external thread 8100. When the second shaft 811 rotates, it can move axially in the shaft mounting seat 813 after the external thread 8100 is threadedly connected with the internal thread 8130.

[0040] For further information, please refer to Figure 1 The diameter of the end of the screw pump rotor 500 close to the first motor 7 is larger than the diameter of the end away from the first motor 7. The above design realizes the generation and disappearance of the closed chamber 502 between the screw pump rotor 500 and the screw pump stator 501, thereby realizing that the medium can pass through each closed chamber 502 and be discharged.

[0041] The specific working process of the present invention is as follows:

[0042] Please refer to Figures 1 to 3 When the screw pump rotor 500 is in a different position in the screw pump stator 501, the contact point between the screw pump rotor 500 and the screw pump stator 501 is different. When the liquid is completely closed, the lines at both ends of the liquid are sealed lines. The sealing lines move with the rotation of the rotor, and the liquid is sent from the suction side to the discharge side. Please refer to Figure 1 In this embodiment, the third tube 2 is used as the suction end, and the fifth tube 4 is used as the discharge end.

[0043] For further information, please continue to refer to Figures 1 to 3When the first motor 7 is working, the current in the first stator 704 generates a magnetic field through the coil, and its magnetic field interacts with the magnetic field in the first rotor 705 to generate an electromagnetic force, and the first rotor 705 is driven to rotate by the electromagnetic force. Since the first rotor 705 is connected to the first shaft 708 through the first key 706, the rotation of the first rotor 705 drives the first shaft 708 to rotate, and the first end of the first shaft 708 is connected to the screw pump rotor 500 through the universal joint 6, so the revolving pair can be driven to the screw pump rotor 500 to rotate. Along the entire length of the screw pump rotor 500, a closed chamber 502 is formed on the inner spiral surface 5010 of the screw pump stator 501 and the surface of the screw pump rotor 500. When the screw pump rotor 500 rotates When the screw pump rotor 500 and the screw pump stator 501 are moving, the volume of the first chamber near the suction end increases. Under the action of the pressure difference with the suction end, the medium enters the first chamber. As the screw pump rotor 500 rotates, the chamber is closed and moves axially along the discharge end. The closed chamber 502 disappears at the discharge end, and a new closed chamber 502 is formed at the suction end. Since the closed chamber 502 is constantly formed, moved, and disappeared, the medium can pass through the closed chambers 502 one by one, flow from the suction end, that is, from the third pipe 2 into the second pipe 100 and enter the closed chamber 502 in the screw pump stator 501, and after being discharged, enter the fourth pipe 3 and flow through the third pipe opening 300 and the fifth pipe opening 401 to the fourth pipe opening 400.

[0044] Of course, in other embodiments of the present invention, the screw pump rotor 500 can also rotate in the opposite direction, that is, change the conveying direction of the raw material, so that the suction end becomes the fifth pipe 4, and the extrusion end becomes the third pipe 2. For further information, please continue to refer to Figures 1 to 3 Due to the influence of the viscosity of the raw materials and impurities in the raw materials, the screw pump rotor 500 will wear after long-term use, resulting in the closed chamber 502 no longer being closed. Therefore, a second motor 8 is provided to compensate for the closed chamber 502. Specifically, the second motor 8 is started, and the coil of the second stator 810 generates a magnetic field after current passes through it, driving the second rotor 808 to rotate, and then driving the second shaft 811 to rotate. Since the second shaft 811 is threadedly connected to the shaft mounting seat 813, the rotation of the second shaft 811 can realize its axial movement, and its axial movement is axial movement along the second groove 8080. Since the second shaft 811 is connected to the first shaft 708 by the screw 804, the first shaft 708 also moves axially in the first groove 7050. Since the first end of the first shaft 708 is connected to the screw pump rotor 500 by the universal joint 6, it can drive the screw pump rotor 500 to move axially, so that the unworn surface of the screw pump rotor 500 continues to form a closed chamber 502 with the screw pump stator 501, thereby compensating for the above-mentioned wear in time and extending the service life of the screw pump rotor 500 and the screw pump stator 501.

[0045] Further, in other embodiments of the present invention, the torque of the first motor 7 can be controlled according to the consistency of the raw material. The first motor 7 is preferably a torque motor, which has the advantages of low speed, high torque and strong overload capacity. In order to adjust the matching clearance between the screw pump stator 501 and the screw pump rotor 500, the delivery requirements of liquids with different viscosities can be met. For example, when the extracted raw material contains impurities such as sand and has a high consistency, the fluidity of the raw material deteriorates, and the torque is also increased accordingly. For example, when the consistency of the raw material is ≥50mPa, the first motor 7 controls the torque to 105N·m, and when the consistency of the raw material is ≥55mPa, the first motor 7 can increase the torque to 110N·m, thereby meeting the pumping requirements of liquids with different viscosities, achieving strong adaptability and no pump jam.

[0046] Correspondingly, the present invention also provides a control device, which includes the above-mentioned integrated conveying structure and a PLC programmable controller module 900, the PLC programmable controller module 900 is respectively connected to the input ends of the first frequency conversion controller 901 and the second frequency conversion controller 902, the input end of the PLC programmable controller module 900 is also respectively connected to the torque sensor 906 and the flow sensor 907, the output end of the first frequency conversion controller 901 is connected to the input end of the first motor 7, and the output end of the second frequency conversion controller 902 is connected to the input end of the second motor 8; the input end of the PLC programmable controller module 900 is also connected to the server 904 through the remote control module 903, and the signal output end of the server 904 is connected to the display component 905.

[0047] For details, please refer to Figure 4 The PLC programmable controller module 900 uses a programmable controller PLC that supports an Ethernet interface or a serial port, and the remote control module 903 uses an industrial intelligent gateway device, which has multiple communication interfaces such as RS232, RS485, RS422, Ethernet, etc. that can be connected to the PLC programmable controller module 900, and the remote control module 903 has a WIFI function that can adapt to various industrial environments. The display component 905 can be a computer display or an industrial computer display screen.

[0048] For further information, please continue to refer to Figure 4, due to the complex situation downhole, the composition of the raw materials will have a greater impact on the torque. The above-mentioned PLC programmable controller module 900 can set a high torque warning value, a high torque alarm value, a low torque warning value and a low torque alarm value. When the torque is too high and exceeds the high torque warning value, the PLC programmable controller module 900 sends a signal to control the first motor 7 to reduce the speed through the first frequency conversion controller 901 to maintain a safe torque. Similarly, when low torque causes insufficient pump efficiency and triggers the low torque warning value, the first frequency conversion controller 901 controls the receiving signal instruction and controls the first motor 7 to increase the speed again to maintain the delivery pump efficiency. When increasing the speed cannot solve the problem, the second motor 8 can be controlled to start through the second frequency conversion controller 902, and the second motor 8 is started and finally the screw pump rotor 500 moves axially to tighten the fitting clearance to achieve the function of compensating the pump efficiency. The remote control module 903 can transmit the received alarm value or warning value information to the server 904 in real time. Similarly, the operator can also download the alarm value or warning value information on the server 904 through the display component 905. The downloaded warning value or alarm value information can be displayed on the display component 905, thereby controlling the remote control module 903 to control the PLC programmable controller module 900 to achieve remote control.

[0049] For details, please refer to Figure 5 , the specific control method of the above control device is as follows:

[0050] S1: Start the machine and set parameters before starting the machine, such as the speed setting value, warning value, alarm value and the axial movement parameters of the screw pump rotor 500, such as the compensation distance of the screw pump rotor 500 to the left or the compensation distance to the right, where the compensation distance of the screw pump rotor 500 to the left or right axially is generally 2mm to 10mm.

[0051] S2: Check once whether the torque exceeds the set value; if so, adjust the axial movement of the screw pump rotor; if not, adjust the speed of the first motor 7 to make the speed of the screw pump rotor 500 reach the set speed value.

[0052] Specifically, firstly, the torque sensor 906 is used to detect whether the torque is at a set value. In this embodiment, the set value is preferably 160N to 700N. If the torque is detected to be 800N, the torque needs to be unloaded. For details, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5, the second motor 8 is started to drive the second shaft 811 to rotate in the opposite direction. Since the second shaft 811 is threadedly connected to the shaft mounting seat 813, it is further realized that it moves axially along the second groove 8080 in the direction close to the third pipe 2 (i.e., the right side of the integrated conveying structure). Since the second shaft 811 is connected to the first shaft 708 by the screw 804, the first shaft 708 is also axially moved in the first groove 7050 in the direction close to the third pipe 2 (i.e., the right side of the integrated conveying structure). Since the first end of the first shaft 708 is connected to the screw pump rotor 500 by the universal joint 6, it can drive the screw pump rotor 500 to move along the axis. When the screw pump rotor 500 moves backward along the axial direction inside the screw pump stator 501, the torque is gradually reduced, and the torque sensor 906 continues to detect. If the detected torque value does not exceed the set value, for example, the collected torque value is 400N, the first motor 7 works at this time, which drives the first rotor 705 to drive the first shaft 708 and the screw pump rotor 500 connected by the universal joint 6 to rotate through the first key 706. Since the first motor 7 is a torque motor, the torque is increased by controlling the speed of the first motor 7 to increase the speed of the screw pump rotor 500 until the speed of the screw pump rotor 500 reaches the set value.

[0053] S3: Check whether the delivery flow exceeds the set value. If not, adjust the speed of the first motor 7; if yes, perform the secondary torque detection step. Specifically, for example, the set value of the delivery flow is 5-500L / min. If the delivery flow is 3L / min detected by the flow sensor 907, the delivery flow is lower than the set value. The first motor 7 works, which drives the first rotor 705 to drive the first shaft 708 and the screw pump rotor 500 connected by the universal joint 6 to rotate through the first key 706, thereby increasing the speed of the screw pump rotor 500, so that the delivery flow is increased until it is within the set value range.

[0054] S4: When the delivery flow rate is in the normal state within the set value range, the second detection torque is performed to see if it is at the set value. If not, that is, it is detected that the torque value has not reached the set value, the second motor 8 is started to drive the second shaft 811 to rotate in the positive direction. Since the second shaft 811 is threadedly connected to the shaft mounting seat 813, it is further realized to move axially along the second groove 8080 in the direction close to the fifth tube 4 (i.e., the left side of the integrated delivery structure). Since the second shaft 811 is connected to the first shaft 708 by the screw 804, the first shaft 708 is also moved axially in the first groove 7050 in the direction close to the fifth tube 4 (i.e., the left side of the integrated delivery structure). Since the first end of the first shaft 708 is connected to the screw pump rotor 500 by the universal joint 6, it can drive the screw pump rotor 500 to move forward in the axial direction, for example, to compensate 5mm for the forward movement in the axial direction.

[0055] S5: When the detected torque value and conveying flow rate are both within the set value range, the integrated conveying device operates normally.

[0056] S6: After a certain period of time (e.g., 20 hours of normal operation) during the normal operation of the integrated conveying device, detect whether the torque is at a high warning value or a low warning value, for example, set the high warning value of the torque to 600N, the high alarm value to 701N, the low warning value to 160N, and the low alarm value to 159N. If it is not at a high warning value, for example, the detected torque does not reach 600N, and continue to operate normally; if it is at a high warning value, such as 600N, adjust the speed of the first motor 7, and the speed adjustment method of the first motor 7 is the same as step S2. If it is not at a low warning value, continue to operate normally; if it is at a low warning value, such as 160N, when the operating speed of the first motor 7 is less than 1 / 2 of the set maximum speed, the first motor speed is adjusted first; when the operating speed is greater than 1 / 2 of the set maximum speed, the axial movement of the screw pump rotor 500 is adjusted first.

[0057] S7: Check whether the torque is at the alarm value. If so, stop the machine. For example, when the detected torque value is the high warning value of 701N or the low warning value of 159N, stop the machine. If not, that is, it does not exceed the high warning value or the low warning value, return to step S5 and continue normal operation.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. Integrated conveying structure, characterized by: It comprises a first motor having a first shaft and a second motor having a second shaft, wherein the first shaft is movably arranged on the first motor, the second shaft is movably arranged on the second motor, the first end of the first shaft is connected to a screw pump rotor through a universal joint, and the screw pump rotor is rotatably arranged in a screw pump stator; the first shaft has a second end connected to the first end of the second shaft, and the second end of the second shaft is rotatably arranged on a shaft mounting seat; a first tube is also connected between the first end of the screw pump stator and the first motor on the outside of the universal joint, the first tube is connected to a part of the second tube, and the other part of the second tube is connected to a third tube, and the second end of the screw pump stator is connected to a fifth tube through a fourth tube, and the pipe opening direction of the fifth tube is opposite to the pipe opening direction of the third tube, so as to realize the conveyance of raw materials in two opposite directions; The second motor includes a second stator and a second rotor disposed inside the second stator, the second rotor has a second slot inside, and the second shaft can move axially along the second slot through a second key; Second bearings are also provided at both ends of the outer side of the second rotor respectively; The second shaft has a first cavity inside, a screw is disposed in the first cavity and connected to the second end of the first shaft, a first section bearing is disposed on the outside of the first shaft between the first shaft and the second shaft, and a second section bearing is disposed on the outside of the screw; The shaft mounting seat has a mounting groove for accommodating the second shaft, the inner wall of the mounting groove has an internal thread, and the outer side of the second end of the second shaft extending into the mounting groove has an external thread.

2. The integrated conveying structure according to claim 1, characterized in that: The diameter of the end of the screw pump rotor close to the first motor is larger than the diameter of the end away from the first motor.

3. The integrated conveying structure according to claim 1, characterized in that: The first motor includes a first shell and a first end cover and a second end cover connected to the ends of the first shell. The first stator is arranged in the first shell, and the first rotor is arranged on the inner side of the first stator. A first slot is opened on the first rotor, and the first shaft can move axially along the first slot through a first key.

4. The integrated conveying structure according to claim 3, characterized in that: A first oil seal and a first bearing are respectively arranged on the outer sides of both ends of the first rotor.

5. The integrated conveying structure according to claim 1, characterized in that: The second motor also includes a third end cover, a second shell, a fourth end cover and a third shell, the first end of the third end cover is connected to the third shell, and the second end of the third end cover is connected to the second end cover; the second shell is located inside the third shell, the first end of the second shell is also connected to the third end cover, the second end of the second shell is connected to the first end of the fourth end cover, and the second end of the fourth end cover is connected to the shaft mounting seat.

6. A control device, characterized in that: The control device includes an integrated conveying structure as described in any one of claims 1 to 5 and a PLC programmable controller module, wherein the PLC programmable controller module is connected to the input ends of the first frequency converter and the second frequency converter respectively, the output end of the first frequency converter is connected to the input end of the first motor, and the output end of the second frequency converter is connected to the input end of the second motor; the input end of the PLC programmable controller module is also connected to the server through a remote control module, and the signal output end of the server is connected to a display component.

7. A method for controlling a device according to claim 6, characterized in that The following steps are involved: Start the machine; Firstly detect whether the torque exceeds the set value; if so, adjust the axial movement of the screw pump rotor; if not, adjust the speed of the first motor to make the speed of the screw pump rotor reach the set speed value; Detect whether the delivery flow is at the set value; if not, adjust the speed of the first motor; if yes, secondly detect whether the torque is at the set value; if not, adjust the axial movement of the screw pump rotor; Normal operation; Detect whether the torque is at a high warning value or a low warning value; If it is not at the high warning value, continue normal operation; if it is at the high warning value, adjust the speed of the first motor; If it is not at a low warning value, continue normal operation; If it is at the low warning value, when the operating speed is less than 1 / 2 of the set maximum speed, adjust the speed of the first motor; when the operating speed is greater than 1 / 2 of the set maximum speed, adjust the axial movement of the screw pump rotor; check whether the torque is at the alarm value, if so, stop the process; if not, return to normal operation.

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