A cleaning device for material conveying pipelines in polylactic acid synthesis

Abstract

The present invention relates to the technical field of cleaning components, and specifically to a cleaning device for a material conveying pipeline in polylactic acid synthesis, comprising a conveying pipeline body, a driving structure on the conveying pipeline body driving a first traction and a second traction retracting line, the driving structure driving an upper and lower slider to slide on a second guide rail on the conveying pipeline body, an electromagnetic structure being provided inside the upper and lower sliders, the electromagnetic structure adsorbing or de-adsorbing the arc-shaped slider, the second guide rail being arranged on the inner side of the conveying pipeline body, and being perpendicular to the circular first guide rail, and being located above the circular first guide rail, and being communicated with the first guide rail; when the arc-shaped slider completes its movement and returns to the intersection of the first guide rail and the second guide rail, the arc-shaped slider is fixed to the upper and lower sliders by magnetic adsorption, and when the first drive drives the upper and lower sliders to move upward, the upper and lower sliders drive the cleaning device to move upward together, thereby achieving the purpose of lifting the cleaning device and improving the cleaning effect.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning devices, in particular to a cleaning device for a material conveying pipeline in polylactic acid synthesis. Background Art

[0002] During the synthesis of polylactic acid, the material to be transported has a certain viscosity. When the material is transported from one end of the pipeline to the other end, due to the influence of the friction factor between the material and the pipeline wall, the material flow rate of the material transported in the pipeline is different in different areas within the same cross-section. The flow rate of the material near the pipeline wall is slower than the material flow rate near the central axis of the pipeline. At the same time, due to the influence of the temperature of the pipeline wall itself, there is a certain temperature difference between the temperature of the material near the pipeline wall and the temperature of the material near the central axis of the pipeline. The flow rate and temperature difference of the above materials in the pipeline affect the effect of the subsequent polymerization reaction and are likely to lead to uneven molecular weight distribution of the polymer after polymerization, thereby affecting the quality of the synthesized polylactic acid product.

[0003] Patent CN105666720B discloses a polylactic acid prepolymer mixing device, comprising a prepolymerization tube arranged in a vertical direction, with at least two mixing preheaters arranged from top to bottom in the prepolymerization tube, all of which have the same structure; each mixing preheater includes a first upper conical guide tube, a second upper conical guide tube, a first lower conical guide tube, a second lower conical guide tube, an upper diverter cone, and a lower diverter cone, all having the same centerline. The solution provided by this patent can ensure the consistency of the flow rate and the uniformity of the temperature within the liquid to a certain extent, but the effect of the tube wall on the liquid flow rate is generally more significant for liquids with high viscosity. After the device is used, the residual viscous liquid adheres to the surface of the liquid transmission and is difficult to clean. This patent does not provide a cleaning device for the device after use. Therefore, it is necessary to provide a cleaning device for the material conveying pipeline in polylactic acid synthesis. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a cleaning device for material conveying pipelines in polylactic acid synthesis.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a cleaning device for a material conveying pipeline in polylactic acid synthesis, comprising a conveying pipeline body, a driving structure provided on the outer wall of the conveying pipeline body, a rotating structure provided on the inner wall of the conveying pipeline body, a cleaning component provided on the rotating structure, and a water supply structure provided on the driving structure;

[0006] The water supply structure introduces water into the cleaning assembly, and the driving structure drives the rotating structure to perform horizontal circular motion on the inner wall of the conveying pipe body, thereby driving the cleaning assembly to clean the conveying structure inside the conveying pipe body;

[0007] The cleaning assembly includes a first scraper, a second scraper and a third scraper; the first scraper, the second scraper and the third scraper are fixedly connected and the inner contour formed by them matches the outer contour of the conveying structure.

[0008] Specifically, the rotating structure includes a first fixed rod, a second fixed rod, a third fixed rod and an arc-shaped slider; the top of the first scraper is fixed with a first fixed rod, the top of the second scraper is fixed with a second fixed rod, the first fixed rod and the second fixed rod are both fixed to the third fixed rod, and the arc-shaped slider is fixed to the side end of the third fixed rod away from the first fixed rod; the first scraper, the second scraper and the third scraper are all provided with water supply pipes inside and water outlets on the surface, the first fixed rod, the second fixed rod and the third fixed rod are all provided with water supply branches inside, and the arc-shaped slider is provided with a slider water inlet pipe inside, and the slider water inlet pipe, the water supply branch pipe, the water supply pipe and the water outlet are connected.

[0009] Specifically, the driving structure includes a second drive, and the output end of the second drive is vertically rotated to connect the transmission rod; the water supply structure includes a water supply adapter unit arranged on the outer wall of the conveying pipe body, and the bottom of the water supply adapter unit is provided with a water inlet, and the top of the water supply adapter unit is provided with a water inlet pipe, and the side wall of the transmission rod is provided with a water pipe fixed joint, and one end of the water inlet pipe away from the water supply adapter unit is arranged inside the transmission rod and connected to the inner port of the water pipe fixed joint, and the outer port of the water pipe fixed joint is connected to one end of the water supply main pipe, and the other end of the water supply main pipe is wrapped around the transmission rod and the end is connected to the water inlet pipe of the slider.

[0010] Specifically, a second fixed partition is provided in the middle portion of the transmission rod and above the winding portion of the water supply main pipe.

[0011] Specifically, the rotating structure also includes a first guide rail and a second guide rail. The first guide rail is horizontally provided on the inner wall of the conveying pipe body, and the second guide rail is vertically provided on the inner wall of the conveying pipe body and is connected to the first guide rail; the arc-shaped slider slides with the first guide rail, and upper and lower sliders are slidingly provided on the second guide rail. The upper and lower sliders are provided with an electromagnetic structure, and the electromagnetic structure realizes the electromagnetic connection between the upper and lower sliders and the arc-shaped slider.

[0012] Specifically, the electromagnetic structure includes a third drive arranged on the top of the upper and lower sliders, the output end of the third drive is vertically rotated and connected to a rotating rod, the rotating rod is arranged inside the upper and lower sliders, and the bottom end of the rotating rod and the top end of the arc-shaped slider are both provided with a magnetic adsorption surface.

[0013] Specifically, the rotating structure also includes a first traction and a second traction, and one end of the first traction and the second traction are respectively fixed at both ends of the arc-shaped slider, and the other ends of the first traction and the second traction are wound around the transmission rod; a plurality of wire pressing structures are provided on the first guide rail, and the wire pressing structures limit the first traction and the second traction within the first guide rail.

[0014] Specifically, the wire pressing structure includes a first guide rail upper rail and a first guide rail lower rail, and the first guide rail upper rail and the first guide rail lower rail are respectively arranged at the top and bottom of the side wall of the first guide rail facing the conveying structure, and a roller rod is vertically arranged between the first guide rail upper rail and the first guide rail lower rail, and a roller is provided in the middle part of the roller rod.

[0015] Specifically, a concave cavity structure is provided in the middle portion of the arc-shaped sliding block facing the side wall of the first guide rail, the upper area of the concave cavity structure is interlocked with the upper rail of the first guide rail, and the lower area of the concave cavity structure is interlocked with the lower rail of the first guide rail.

[0016] Specifically, a traction rod is vertically provided in the concave cavity structure of the arc-shaped sliding block, and the ends of the first traction member and the second traction member away from the transmission rod are both fixedly provided on the traction rod.

[0017] The beneficial effects of the present invention are:

[0018] (1) The present invention proposes a cleaning device for a material conveying unit in polylactic acid synthesis, which includes a driving structure and a rotating structure. The rotating structure is provided with a cleaning component. Driven by the driving structure, the rotating structure drives the cleaning component to perform horizontal circular motion inside the conveying pipe body, thereby achieving 180° cleaning of the material conveying unit; the cleaning device is easy to move and has a better cleaning effect.

[0019] (2) The present invention proposes a cleaning device for a material conveying unit, wherein the first scraper, the second scraper, and the third scraper in the cleaning assembly are three cleaning sections of an integral cleaning unit. The first scraper, the second scraper, and the third scraper are fixedly connected and the inner contour formed by them matches the outer contour of the conveying structure. The three scrapers are completely in contact with the top and side walls of the conveying unit, which is conducive to scraping off attachments. The present invention can set up cleaning devices of corresponding sizes according to the number of conveying units, which is more flexible.

[0020] (3) The present invention proposes a cleaning device for a material conveying unit. In the water supply structure, water enters the water supply main from the water inlet through the water inlet pipe, then enters the slider water inlet pipe inside the arc-shaped slider, reaches the water supply branch on the rotating structure, and finally enters the water supply pipe inside the first scraper, the second scraper, and the third scraper, and the water is discharged from the water outlet to reach the surface of the conveying unit to be cleaned. The setting of the water supply unit enables the cleaning component to scrape out attachments while also playing a cleaning role; the cleaning effect of the material conveying device in the polylactic acid synthesis is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] Figure 1 A schematic diagram of the delivery pipeline body provided by the present invention;

[0023] Figure 2 is a schematic diagram of the conveying structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the connection port of the conveying structure of the present invention;

[0025] Figure 4 Schematic diagram of the liquid contact structure and the liquid discharge structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the coordination of the conveying structure and the cleaning structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the cleaning component of the present invention inside the pipeline;

[0028] Figure 7 This is an overall schematic diagram of the connection method of the first scraper, the second scraper, and the third scraper of the present invention;

[0029] Figure 8 is a schematic diagram of a first scraper of the present invention;

[0030] Figure 9 is a schematic diagram of the second scraper of the present invention;

[0031] Figure 10 is a schematic diagram of a third scraper of the present invention;

[0032] Figure 11 is a schematic diagram of the drive structure;

[0033] Figure 12 for Figure 11 A magnified schematic diagram of area A in the middle;

[0034] Figure 13 This is a schematic diagram of the cleaning component of the present invention when not in use;

[0035] Figure 14 This is a schematic diagram of the cleaning component of the present invention when it starts cleaning;

[0036] Figure 15 This is a schematic diagram of the cleaning component of the present invention in the cleaning process;

[0037] Figure 16 A schematic diagram of the overall arrangement of the cleaning drive structure of the present invention;

[0038] Figure 17 Schematic diagram of the implementation of the electromagnetic structure of the present invention;

[0039] Figure 18 Schematic diagram of the connection structure of the first guide rail upper rail, the first guide rail lower rail, the first traction and the second traction of the present invention;

[0040] Figure 19 It is a side view of the movement of the arc-shaped slider of the present invention on the first guide rail.

[0041] Figure: 1, conveying pipe body; 2, liquid inlet vertical pipe; 3, liquid discharge pipe; 4, conveying structure; 401, conveying unit; 402, upper table; 403, vertical baffle; 404, connecting port; 405, valve; 406, support rod; 407, thermostat; 5, liquid outlet; 6, liquid receiving structure; 601, liquid receiving unit; 602, upward baffle; 603, liquid discharge port; 604, liquid discharge baffle; 605, liquid discharge valve; 606, pipeline bottom plate; 7, first scraper; 701, first body 702, first scraper; 703, first end surface; 704, second end surface; 8, second scraper; 801, second body; 802, second scraper; 803, third end surface; 804, fourth end surface; 9, third scraper; 901, third body; 902, third scraper; 903, fifth end surface; 904, sixth end surface; 10, water supply pipe; 11, water outlet; 12, rotating structure; 1201, first fixing rod; 1202, second fixing rod; 1203, third fixing rod; 1204, curved slider; 12041, concave cavity structure; 12042, traction rod; 1205, upper and lower sliders; 1206, first guide rail; 1207, second guide rail; 1208, first traction; 1209, second traction; 13, drive structure; 1301, first drive; 1302, second drive; 1303, lead screw; 1304, transmission rod; 1305, first connecting rod; 1306, first fixed partition; 1307, second fixed partition; 1308, cover plate; 14. Water supply structure; 1401. Water supply adapter unit; 1402. Water inlet; 1403. Water inlet pipe; 1404. Water pipe fixed joint; 1405. Water supply main pipe; 1406. Slider water inlet pipe; 1407. Water supply branch pipe; 15. Electromagnetic structure; 1501. Third drive; 1502. Rotating rod; 1503. Magnetic adsorption surface; 16. Wire pressing structure; 1601. First guide rail upper rail; 1602. First guide rail lower rail; 1603. Roller rod; 1604. Roller. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0043] Example 1

[0044] The cleaning device proposed by the present invention is used to clean the material conveying equipment in the synthesis of polylactic acid. Figure 1-4As shown, the material conveying equipment in the polylactic acid synthesis includes the following structure: a conveying pipe body 1, three conveying structures 4 are arranged at intervals inside the conveying pipe body 1, a liquid inlet vertical pipe 2 is vertically provided on the top of the conveying pipe body 1, and the lower end of the liquid inlet vertical pipe 2 passes through each conveying structure 4 and extends to the bottom of the conveying pipe body 1, and a discharge pipe 3 is provided at the bottom end of the conveying pipe body 1, and the discharge pipe 3 is connected to the liquid inlet vertical pipe 2. The material conveyed by the conveying structure 4 is discharged from the conveying pipe body 1 through the discharge pipe 3 and sent to the downstream device.

[0045] The conveying structure 4 includes a conveying unit 401. The conveying unit 401 is generally truncated cone-shaped. The diameter of the top of the conveying unit 401 is smaller than the diameter of the bottom. The conveying unit 401 includes an upper table 402. The liquid inlet vertical pipe 2 is fixedly connected to the connection port 404 at the center of the upper table 402 and extends downward. A plurality of liquid outlets 5 are evenly arranged around the wall of the liquid inlet vertical pipe 2 near the upper table 402. The material in the liquid inlet vertical pipe 2 is delivered to the upper table 402 through the liquid outlets 5.

[0046] The conveying unit 401 also includes a valve 405. A valve 405 with a controllable switch is provided inside the liquid inlet vertical pipe 2 and below the upper table 402. The valve 405 is used to control whether the material in the liquid inlet vertical pipe 2 continues to be conveyed downward by the liquid inlet vertical pipe 2; the upper table 402 is a concave surface with a low middle and high sides, and the diameter of the upper table 402 of each lower conveying unit 401 is larger than the bottom diameter of the upper conveying unit 401; when the valve 405 is closed, the material in the liquid inlet vertical pipe 2 flows into the upper table 402 through the liquid outlet 5. After the liquid on the upper table 402 accumulates excessively, it will flow downward along the outer wall of the cone of the conveying unit 401 and drip onto the upper table 402 of the lower conveying unit 401; vertical baffles 403 are vertically provided around the lower end face of the conveying unit 401.

[0047] The working principle of the above technical solution is:

[0048] The material entering from the conveying pipe body 1 closes the valve 405 and reaches the upper table 402 of the conveying unit 401 through the liquid inlet vertical pipe 2. The material in the liquid inlet vertical pipe 2 flows from the liquid outlet 5 to the upper table 402. As the material conveyed by the liquid inlet vertical pipe 2 gradually increases, the material liquid level on the upper table 402 gradually rises. When it rises to the upper edge of the upper table 402, the liquid in the upper table 402 will overflow along the edge of the upper table 402 and flow down along the outer wall of the conveying unit 401, and smoothly enter the conveying unit 401 below through the drainage of the vertical baffle 403 set at the bottom. The inner diameter of the upper table 402 of the lower conveying unit 401 is larger than the outer diameter of the most recent vertical baffle 403 above.

[0049] As an embodiment, a liquid receiving structure 6 is provided inside the conveying pipe body 1 and at the bottom of all conveying structures 4. The liquid receiving structure 6 includes a liquid receiving unit 601. The liquid receiving unit 601 is funnel-shaped. The end of the liquid inlet vertical pipe 2 is fixedly connected to the middle of the liquid receiving unit 601 and a drain port 603 is provided at the connection. A circle of drain baffles 604 is provided at the bottom of the liquid receiving unit 601. The diameter formed by the lower edge of the drain baffle 604 is smaller than the drain pipe 3 and corresponds to the drain pipe 3. A drain valve 605 is provided on the drain pipe 3, and the drain valve 605 is used to control the opening or closing of the drain pipe 3.

[0050] The bottom of the liquid inlet vertical pipe 2 is in the shape of a bell mouth, and a number of drainage ports 603 are provided on the bell mouth. The total opening area of all the drainage ports 603 is larger than the sum of the opening areas of the liquid outlets 5 at the lowest point of all the upper tables 402 above. An upward baffle 602 is provided around the upper end surface of the liquid receiving unit 601, and the lower edge of the upward baffle 602 is lower than the height of the edge of the upper end surface of the liquid receiving unit 601; the liquid receiving structure 6 also includes a pipeline bottom plate 606, which is inclined and lowest at the center. The bottom end of the conveying pipe body 1 is fixedly connected to the pipeline bottom plate 606, and the liquid overflowing from the top of the liquid receiving unit 601 drips downward onto the pipeline bottom plate 606 of the conveying pipe body 1.

[0051] The working principle of the above technical solution is:

[0052] When the liquid in the liquid inlet vertical pipe 2 needs to be transported through all the conveying units 401, the valves 405 in the liquid inlet vertical pipes 2 of all the conveying units 401 are closed. At this time, all the materials in the liquid inlet vertical pipe 2 are all sent out from the liquid outlet 5 at the connection between the upper table 402 of the first conveying unit 401 and the liquid inlet vertical pipe 2, and overflow through the upper table 402 of the first conveying unit 401 to reach the upper table 402 of the second conveying unit 401. Because the valve 405 in the liquid inlet vertical pipe 2 of the second conveying unit 401 is closed at this time, the liquid accumulates and rises on the upper table 402 of the second conveying unit 401 and flows out from the upper table 402. After overflowing, it flows to the conveying unit 401 below again, and thus passes through the conveying unit 401 below one by one; the contact surface between the liquid inlet vertical pipe 2 and the lowest point of the liquid receiving unit 601 is larger, which is convenient for increasing the opening area of the drain port 603 and increasing the number of openings of the drain port 603, that is, the total opening area of the drain port 603 here is larger than the sum of the opening areas of the liquid outlet 5 at the lowest point of all the upper tables 402 above. The main purpose is to ensure that when the liquid outlets 5 of all the upper tables 402 above all deliver liquid, the liquid that finally converges to the liquid receiving unit 601 can be quickly discharged through the drain port 603 there in time.

[0053] As an embodiment, the conveying structure 4 further includes support rods 406. The interior of the conveying unit 401 is a hollow structure with its lower end face open downward. A pair of symmetrical support rods 406 are fixedly disposed on the inner wall of the conveying unit 401 near the lower end face. One end of the support rods 406 is fixedly connected to the inner wall of the conveying unit 401, and the other end is fixedly connected to the outer wall of the liquid inlet riser 2. A heating wire is disposed within the support rods 406 for heating the conveying unit 401. The conveying structure 4 further includes a temperature controller 407 disposed on the support rods 406. The temperature controller 407 and the heating wire within the support rods 406 are both electrically connected to a central control system. During the material conveying process, heating is achieved through the heating structure of each conveying unit 401. Each heating structure of each conveying unit 401 can be temperature-regulated by its own independent temperature controller 407, facilitating real-time control and regulation of the conveyed material.

[0054] Two symmetrical support rods 406 can also be set on the lower outer wall of the liquid receiving unit 601, and a temperature controller 407 is set on the support rod 406. A heating structure is set on the outer wall of the liquid receiving unit 601. One end of the connecting line inside the support rod 406 is connected to the wire pipe on the outer wall of the liquid inlet vertical pipe 2, and the other end is connected to the heating structure on the outer wall of the liquid receiving unit 601. The wire pipe on the outer wall of the liquid inlet vertical pipe 2 can also be directly connected to the heating structure set on the outer wall of the liquid receiving unit 601 through the temperature controller 407. The temperature controller 407 is fixed on the outer wall of the liquid inlet vertical pipe 2 below the liquid receiving unit 601, or fixed on the outer wall of the liquid receiving unit 601; the heating principle and method here are the same as the heating principle and method of the above-mentioned conveying unit 401, and will not be repeated here.

[0055] Example 2

[0056] In the material conveying equipment of the first embodiment, after the conveying is completed, materials will remain on the top and side walls of the entire frustum structure of the conveying unit 401 , and a cleaning device is required to clean the surface of the conveying unit 401 .

[0057] like Figure 5-19 As shown, the present invention provides a cleaning device for a material conveying unit in polylactic acid synthesis, comprising a conveying pipe body 1, a driving structure 13 being provided on the outer wall of the conveying pipe body 1, a rotating structure 12 being provided on the inner wall of the conveying pipe body 1, and a cleaning component being provided on the rotating structure 12. The driving structure 13 drives the rotating structure 12 to perform horizontal circular motion on the inner wall of the conveying pipe body 1, thereby driving the cleaning component to clean the conveying structure 4 inside the conveying pipe body 1;

[0058] The cleaning assembly includes a first scraper 7 , a second scraper 8 and a third scraper 9 ; the first scraper 7 , the second scraper 8 and the third scraper 9 are fixedly connected and the inner contour formed by them matches the outer contour of the conveying structure 4 .

[0059] The first scraper 7 includes a first body 701, a first scraper blade 702, a first end face 703 and a second end face 704. The first body 701 has a first scraper blade 702 on its side wall. The first body 701 has a first end face 703 on one end close to the conveying structure 4 and a second end face 704 on the other end away from the conveying structure 4.

[0060] The second scraper 8 includes a second body 801, a second scraper blade 802, a third end face 803 and a fourth end face 804. The side wall of the second body 801 is provided with a second scraper blade 802. The end of the second body 801 close to the first scraper 7 is provided with a third end face 803, and the end away from the first scraper 7 is provided with a fourth end face 804. The third end face 803 is fixedly connected to the second end face 704.

[0061] The third scraper 9 includes a third body 901, a third scraper blade 902, a fifth end face 903 and a sixth end face 904. The third body 901 has a third scraper blade 902 on its sidewall. The third body 901 has a fifth end face 903 on one end close to the second body 801 and a sixth end face 904 on the other end away from the second body 801. The fourth end face 804 is fixedly connected to the fifth end face 903.

[0062] The working principle of the above technical solution is:

[0063] The first scraper 702 has the same length and the same inclination angle as the inclined surface of the upper table 402. The first end surface 703 is arc-shaped and fits in contact with the liquid inlet vertical pipe 2, and can slide in a circular motion along the outer surface of the liquid inlet vertical pipe 2. The first scraper 702 fits completely in contact with the upper table 402, which is conducive to scraping off the attachments on the upper table 402.

[0064] The second end surface 704 is located at the upper edge of the upper table 402 and is interlocked with the third end surface 803. The length and cleaning angle of the second scraper 802 are the same as those of the outer wall of the conveying unit 401. The second scraper 802 is completely in contact with the outer wall surface, which is conducive to scraping off the attachments on the outer wall surface; the fourth end surface 804 is located at the lower edge of the outer wall of the conveying unit 401 and is interlocked with the fifth end surface 903. The length and vertical angle of the third scraper 902 are the same as those of the vertical baffle 403. The third scraper 902 is completely in contact with the outer surface of the vertical baffle 403, which is conducive to scraping off the attachments on the outer surface of the vertical baffle 403.

[0065] The second end face 704 of the first scraper 7, the third end face 803 of the second scraper 8, the fourth end face 804 and the fifth end face 903 of the third scraper 9 are only for easier understanding of the description. There are no actual end faces. The second end face 704 and the third end face 803, the fourth end face 804 and the fifth end face 903 are completely formed, that is, the first scraper 7, the second scraper 8 and the third scraper 9 are three cleaning sections of an overall cleaning unit, and do not perform scraping and cleaning actions in isolation.

[0066] As an embodiment, the rotating structure 12 includes a first fixed rod 1201, a second fixed rod 1202, a third fixed rod 1203 and an arc-shaped slider 1204; the first fixed rod 1201 is fixed to the top of the first scraper 7, the second fixed rod 1202 is fixed to the top of the second scraper 8, the first fixed rod 1201 and the second fixed rod 1202 are both fixed to the third fixed rod 1203, and the arc-shaped slider 1204 is fixed to the side end of the third fixed rod 1203 away from the first fixed rod 1201.

[0067] The rotating structure 12 also includes a first guide rail 1206 and a second guide rail 1207. The first guide rail 1206 is horizontally provided on the inner wall of the conveying pipe body 1, and the second guide rail 1207 is vertically provided on the inner wall of the conveying pipe body 1 and is connected to the first guide rail 1206; the arc-shaped slider 1204 slides with the first guide rail 1206, and the upper and lower sliders 1205 are slidingly provided on the second guide rail 1207. The upper and lower sliders 1205 are provided with an electromagnetic structure 15, and the electromagnetic structure 15 realizes the electromagnetic connection between the upper and lower sliders 1205 and the arc-shaped slider 1204.

[0068] The electromagnetic structure 15 includes a third drive 1501 arranged on the top of the upper and lower sliders 1205. The output end of the third drive 1501 is vertically rotated and connected to the rotating rod 1502. The rotating rod 1502 is arranged inside the upper and lower sliders 1205. The bottom end of the rotating rod 1502 and the top end of the arc-shaped slider 1204 are both provided with a magnetic adsorption surface 1503. A coil is provided inside the rotating rod 1502. When power is applied, the coil generates magnetism, and the arc-shaped slider 1204 and the upper and lower sliders 1205 are fixed by magnetic adsorption. When power is not applied, the magnetism between the arc-shaped slider 1204 and the upper and lower sliders 1205 is lost, and the two are separated.

[0069] As an embodiment, the rotating structure 12 also includes a first traction 1208 and a second traction 1209, and one end of the first traction 1208 and the second traction 1209 are respectively fixed to the two ends of the arc-shaped slider 1204, and the other ends of the first traction 1208 and the second traction 1209 are wound and set on the transmission rod 1304; a plurality of wire pressing structures 16 are provided on the first guide rail 1206, and the wire pressing structures 16 limit the first traction 1208 and the second traction 1209 within the first guide rail 1206.

[0070] The wire pressing structure 16 includes a first guide rail upper rail 1601 and a first guide rail lower rail 1602. The first guide rail upper rail 1601 and the first guide rail lower rail 1602 are respectively arranged at the top and bottom of the side wall of the first guide rail 1206 facing the conveying structure 4. A roller rod 1603 is vertically provided between the first guide rail upper rail 1601 and the first guide rail lower rail 1602, and a roller 1604 is provided in the middle part of the roller rod 1603; the position of the roller 1604 on the roller rod 1603 is fixed, but the roller 1604 can rotate freely around the roller rod 1603.

[0071] A concave cavity structure 12041 is provided in the middle part of the side wall of the arc-shaped slider 1204 facing the first guide rail 1206. The upper area of the concave cavity structure 12041 is mutually embedded with the upper rail 1601 of the first guide rail, and the lower area of the concave cavity structure 12041 is mutually embedded with the lower rail 1602 of the first guide rail, thereby realizing the sliding cooperation between the arc-shaped slider 1204 and the first guide rail 1206; the space size of the concave cavity structure 12041 is sufficient for the roller 1604 to pass through.

[0072] A traction rod 12042 is vertically provided in the concave cavity structure 12041 of the arc-shaped slider 1204, and the ends of the first traction 1208 and the second traction 1209 away from the transmission rod 1304 are fixedly set on the traction rod 12042; the function of the traction rod 12042 is to fix the first traction 1208 and the second traction 1209 on the traction rod 12042.

[0073] The working principle of the above technical solution is:

[0074] When the curved slider 1204 needs to move on the first guide rail 1206, the first traction 1208 or the second traction 1209 pulls the traction rod 12042 to drive the curved slider 1204 on the first guide rail 1206. The fixed positions of the first traction 1208 and the second traction 1209 on the traction rod 12042 correspond to the positions of the rollers 1604. When the first traction 1208 or the second traction 1209 is pulled by the force, the first traction 1208 or the second traction 1209 contacts the rollers 1604. The rolling of the rollers 1604 can reduce friction and improve traction efficiency. Another function of the first traction 1208 or the second traction 1209 is to arrange them behind the rollers 1604, thereby confining them within the first guide rail 1206 and preventing them from falling off.

[0075] As an embodiment, the driving structure 13 includes a first drive 1301, the output end of the first drive 1301 vertically rotates to connect the screw rod 1303, and a first connecting rod 1305 is provided on the screw rod 1303. The end of the first connecting rod 1305 away from the screw rod 1303 penetrates into the pipe wall of the conveying pipe body 1 and is fixedly connected to the upper and lower sliders 1205; the first drive 1301 drives the first connecting rod 1305 to move up and down on the screw rod 1303, thereby driving the upper and lower sliders 1205 to move up and down in the second guide rail 1207.

[0076] The driving structure 13 also includes a second drive 1302, the output end of which is vertically rotated to connect to the transmission rod 1304; the rotating structure 12 also includes a first traction 1208 and a second traction 1209, and the two ends of the arc-shaped slider 1204 are respectively fixed with one end of the first traction 1208 and the second traction 1209, and the other ends of the first traction 1208 and the second traction 1209 are wound around the transmission rod 1304. The second drive 1302 drives the transmission rod 1304 to rotate, thereby driving the retraction and extension of the first traction 1208 and the second traction 1209, thereby causing the arc-shaped slider 1204 to slide on the first guide rail 1206.

[0077] The working principle of the overall technical solution:

[0078] When the cleaning function is started, the second drive 1302 drives the transmission rod 1304 to rotate forward. The forward rotation of the transmission rod 1304 will drive the second traction 1209 to wind around the transmission rod 1304. At the same time, the first traction 1208 pays off and stretches the line. The second traction 1209 tightens and drives the arc-shaped slider 1204 to move along the first guide rail 1206. The arc-shaped slider 1204 starts to move along the first guide rail 1206. Because the arc-shaped slider 1204 is fixedly connected to the third fixed rod 1203, it drives the first scraper 7, the second scraper 8, and the third scraper 9 to perform circular motion.

[0079] When the arc-shaped slider 1204 completes the clearing work after moving one circle along the first guide rail 1206, the second drive 1302 reversely drives the transmission rod 1304 to rotate in the opposite direction. At this time, the first traction 1208 is wound around and tightened on the transmission rod 1304. At the same time, the second traction 1209 pays off and stretches the line, driving the arc-shaped slider 1204 to move in the opposite direction on the first guide rail 1206 and return to the initial position.

[0080] The arc-shaped slider 1204 is driven to move along the first guide rail 1206 by the first traction 1208 and the second traction 1209, that is, the arc-shaped slider 1204 moves along the first guide rail 1206, and the arc-shaped slider 1204 drives the third fixed rod 1203 to rotate, so that the third fixed rod 1203 drives the first fixed rod 1201 and the second fixed rod 1202 to rotate, so that the third fixed rod 1203 drives the first body 701 to rotate, and the second fixed rod 1202 drives the second body 801 to rotate, thereby making the movement of the first body 701 and the second body 801 more convenient and achieving a better cleaning effect.

[0081] The second guide rail 1207 is provided on the inner side of the conveying pipe body 1 and is perpendicular to and connected to the first guide rail 1206. The upper and lower sliders 1205 move upward or downward on the second guide rail 1207 under the drive of the first driver 1301.

[0082] When the cleaning function of the cleaning component is not needed, that is, the arc-shaped slider 1204 returns to the intersection of the first guide rail 1206 and the second guide rail 1207 after the movement is completed, the arc-shaped slider 1204 and the rotating rod 1502 inside the upper and lower sliders 1205 are energized to achieve adsorption; when the first drive 1301 drives the upper and lower sliders 1205 to move upward, it drives the cleaning component to move upward together, thereby achieving the purpose of lifting the cleaning component; then the third drive 1501 drives the rotation of the rotating rod 1502, and drives the cleaning component to rotate left or right through the arc-shaped slider 1204, so that the cleaning component is away from the conveying unit 401.

[0083] The middle part of the transmission rod 1304 is separated by a first fixed partition 1306, the second traction 1209 is wound around the transmission rod 1304 above the first fixed partition 1306, and the first traction 1208 is wound around the transmission rod 1304 below the first fixed partition 1306; the purpose of setting the first fixed partition 1306 is to separate the first traction 1208 and the second traction 1209 to prevent winding.

[0084] A cover plate 1308 is provided outside the screw rod 1303 and the transmission rod 1304 , and the cover plate 1308 protects the driving structure 13 .

[0085] Example 3

[0086] This embodiment adds a water supply structure 14 on the basis of the second embodiment. The cleaning component in the second embodiment only scrapes out the materials on the top and side walls of the conveying unit 401. The water supply structure 14 can achieve the purpose of cleaning during the rotation cleaning process.

[0087] A cleaning device for a material conveying pipeline in polylactic acid synthesis includes a conveying pipeline body 1, a driving structure 13 is provided on the outer wall of the conveying pipeline body 1, a rotating structure 12 is provided on the inner wall of the conveying pipeline body 1, a cleaning component is provided on the rotating structure 12, and a water supply structure 14 is provided on the driving structure 13;

[0088] The water supply structure 14 introduces water into the cleaning assembly, and the driving structure 13 drives the rotating structure 12 to perform horizontal circular motion on the inner wall of the conveying pipe body 1, thereby driving the cleaning assembly to clean the conveying structure 4 inside the conveying pipe body 1;

[0089] The cleaning assembly includes a first scraper 7, a second scraper 8, and a third scraper 9; these are fixedly connected, and their inner contour matches the outer contour of the conveying structure 4. Each of the first, second, and third scrapers 7, 8, and 9 is internally provided with a water supply pipe 10 and a water outlet 11. Each of the first, second, and third fixed rods 1201, 1202, and 1203 is internally provided with a water supply branch pipe 1407. A water inlet pipe 1406 is internally provided to the curved slider 1204. The slider water inlet pipe 1406, the water supply branch pipe 1407, the water supply pipe 10, and the water outlet 11 are interconnected.

[0090] The water supply structure 14 includes a water supply adapter unit 1401 arranged on the outer wall of the conveying pipe body 1, a water inlet 1402 is provided at the bottom of the water supply adapter unit 1401, a water inlet pipe 1403 is provided at the top of the water supply adapter unit 1401, and a water pipe fixed joint 1404 is provided on the side wall of the transmission rod 1304. The end of the water inlet pipe 1403 away from the water supply adapter unit 1401 is arranged inside the transmission rod 1304 and connected to the inner port of the water pipe fixed joint 1404. The outer port of the water pipe fixed joint 1404 is connected to one end of the water supply main pipe 1405. The other end of the water supply main pipe 1405 is wrapped around the transmission rod 1304 and the end is connected to the slider water inlet pipe 1406.

[0091] A second fixed partition 1307 is provided in the middle portion of the transmission rod 1304 and above where the water supply main pipe 1405 is wound. The second fixed partition 1307 is provided to prevent the water supply main pipe 1405 and the first traction 1208 from being entangled together.

[0092] In order to prevent the first traction 1208, the second traction 1209 and the water supply main pipe 1405 from being separated from the first guide rail 1206 during the process of extending on the first guide rail 1206, the first traction 1208, the second traction 1209 and the water supply main pipe 1405 are arranged behind the roller 1604, thereby confining the first traction 1208, the second traction 1209 and the water supply main pipe 1405 within the first guide rail 1206 to prevent them from falling off;

[0093] The length of the water supply main pipe 1405 wrapped around the transmission rod 1304 is long enough, and its length is greater than the length of the circumference of the cross section of the delivery pipe body 1. When the arc-shaped slider 1204 moves along the circular first guide rail 1206, the water supply main pipe 1405 also circles the delivery pipe along the first guide rail 1206 as the arc-shaped slider 1204 moves; the length of the water supply main pipe 1405 in the first guide rail 1206 is slightly longer than the first traction 1208. The purpose is that when the first traction 1208 pulls the arc-shaped slider 1204 to move in the opposite direction, the water supply main pipe 1405 only completes the action of retracting the water supply main pipe wrapped around the transmission rod 1304, and does not pull the arc-shaped slider 1204, thereby avoiding stress damage to the water supply main pipe 1405.

[0094] The working principle of the overall technical solution:

[0095] When the cleaning component starts the cleaning function, the arc-shaped slider 1204 starts to move along the first guide rail 1206, and the second drive 1302 drives the transmission rod 1304 to rotate forward. The forward rotation of the transmission rod 1304 drives the second traction 1209 to wrap around the transmission rod 1304. The second traction 1209 is tightened and drives the arc-shaped slider 1204 to move along the first guide rail 1206. At this time, with the forward rotation of the transmission rod 1304 and the movement of the arc-shaped slider 1204, the first traction 1208 and the water supply main 1405 are extended;

[0096] The water source enters the water supply main 1405 from the water inlet 1402 through the water inlet pipe 1403, then enters the slider water inlet pipe 1406 inside the arc-shaped slider 1204, reaches the water supply branch pipe 1407 on the rotating structure 12, and finally enters the water supply pipe 10 inside the first scraper 7, the second scraper 8, and the third scraper 9, and discharges from the water outlet 11 to reach the surface of the conveying unit 401 to be cleaned.

[0097] When the cleaning component completes cleaning, that is, the arc-shaped slider 1204 moves one circle along the first guide rail 1206, the second drive 1302 reversely drives the transmission rod 1304 to rotate in the opposite direction. At this time, the first traction 1208 is wrapped around and tightened on the transmission rod 1304, driving the arc-shaped slider 1204 to move in the opposite direction on the first guide rail 1206 and return to the initial position. At the same time, the water supply main 1405 completes the work of winding and collecting the pipe.

[0098] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A cleaning device for a material conveying pipeline in polylactic acid synthesis, comprising a conveying pipeline body (1), characterized in that: The outer wall of the delivery pipe body (1) is provided with a driving structure (13), the inner wall of the delivery pipe body (1) is provided with a rotating structure (12), the rotating structure (12) is provided with a cleaning component, and the driving structure (13) is provided with a water supply structure (14); The water supply structure (14) introduces water into the cleaning component, and the driving structure (13) drives the rotating structure (12) to perform horizontal circular motion on the inner wall of the conveying pipe body (1), thereby driving the cleaning component to clean the conveying structure (4) inside the conveying pipe body (1); The cleaning assembly comprises a first scraper (7), a second scraper (8) and a third scraper (9); the first scraper (7), the second scraper (8) and the third scraper (9) are fixedly connected and the inner contour formed by them matches the outer contour of the conveying structure (4); The rotating structure (12) comprises a first fixing rod (1201), a second fixing rod (1202), a third fixing rod (1203) and an arc-shaped slider (1204); the first scraper (7) is fixed with the first fixing rod (1201) at the top end, the second scraper (8) is fixed with the second fixing rod (1202) at the top end, the first fixing rod (1201) and the second fixing rod (1202) are both fixed to the third fixing rod (1203), and the third fixing rod (1203) is fixed with an arc-shaped slider (1204) at one end away from the first fixing rod (1201). shaped slider (1204); the first scraper (7), the second scraper (8) and the third scraper (9) are all provided with water supply pipes (10) inside and water outlets (11) on their surfaces; the first fixed rod (1201), the second fixed rod (1202) and the third fixed rod (1203) are all provided with water supply branches (1407) inside; the arc-shaped slider (1204) is provided with a slider water inlet pipe (1406); the slider water inlet pipe (1406), the water supply branch pipe (1407), the water supply pipe (10) and the water outlet (11) are connected; The driving structure (13) includes a second driving (1302), the output end of which is vertically rotated to connect to a transmission rod (1304); the water supply structure (14) includes a water supply adapter unit (1401) arranged on the outer wall of the delivery pipe body (1), the bottom of the water supply adapter unit (1401) is provided with a water inlet (1402), the top of the water supply adapter unit (1401) is provided with a water inlet pipe (1403), the side wall of the transmission rod (1304) is provided with a water pipe fixed joint (1404), one end of the water inlet pipe (1403) away from the water supply adapter unit (1401) is arranged inside the transmission rod (1304) and connected to the inner opening of the water pipe fixed joint (1404), the outer opening of the water pipe fixed joint (1404) is connected to one end of the water supply main pipe (1405), and the The other end of the water supply main (1405) is wound around the transmission rod (1304) and the end is connected to the slider water inlet pipe (1406); the rotating structure (12) also includes a first guide rail (1206) and a second guide rail (1207), the first guide rail (1206) is horizontally provided on the inner wall of the conveying pipe body (1), and the second guide rail (1207) is vertically provided on the inner wall of the conveying pipe body (1) and is connected to the first guide rail (1206); the arc-shaped slider (1204) is slidably matched with the first guide rail (1206), and the upper and lower sliders (1205) are slidably provided on the second guide rail (1207), and the upper and lower sliders (1205) are provided with an electromagnetic structure (15), and the electromagnetic structure (15) realizes electromagnetic connection between the upper and lower sliders (1205) and the arc-shaped slider (1204); The rotating structure (12) further includes a first traction (1208) and a second traction (1209), one end of the first traction (1208) and the second traction (1209) are fixed to both ends of the arc-shaped slider (1204), and the other ends of the first traction (1208) and the second traction (1209) are wound around the transmission rod (1304); a plurality of line pressing structures (16) are provided on the first guide rail (1206), and the line pressing structures (16) limit the first traction (1208) and the second traction (1209) within the first guide rail (1206); The wire pressing structure (16) comprises a first guide rail upper rail (1601) and a first guide rail lower rail (1602), wherein the first guide rail upper rail (1601) and the first guide rail lower rail (1602) are respectively arranged at the top and bottom of the side wall of the first guide rail (1206) facing the conveying structure (4), and a roller rod (1603) is vertically arranged between the first guide rail upper rail (1601) and the first guide rail lower rail (1602), and a roller (1604) is arranged in the middle of the roller rod (1603); The arc-shaped slider (1204) is provided with a concave cavity structure (12041) in the middle part of the side wall facing the first guide rail (1206), the upper area of the concave cavity structure (12041) is interlocked with the first guide rail upper rail (1601), and the lower area of the concave cavity structure (12041) is interlocked with the first guide rail lower rail (1602).

2. The cleaning device for a material conveying pipeline in polylactic acid synthesis according to claim 1, characterized in that: A second fixed partition (1307) is provided in the middle portion of the transmission rod (1304) and above where the water supply main pipe (1405) is wound.

3. The cleaning device for a material conveying pipeline in polylactic acid synthesis according to claim 2, characterized in that: The electromagnetic structure (15) includes a third drive (1501) arranged on the top of the upper and lower sliders (1205), and the output end of the third drive (1501) is vertically rotated and connected to a rotating rod (1502). The rotating rod (1502) is arranged inside the upper and lower sliders (1205), and the bottom end of the rotating rod (1502) and the top end of the arc-shaped slider (1204) are both provided with a magnetic adsorption surface (1503).

4. The cleaning device for material conveying pipelines in polylactic acid synthesis according to claim 3, characterized in that: A traction rod (12042) is vertically provided in the concave cavity structure (12041) of the arc-shaped slider (1204), and the ends of the first traction (1208) and the second traction (1209) away from the transmission rod (1304) are fixedly arranged on the traction rod (12042).

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