A discharge structure used in a polyol reactor
By introducing a combined discharge structure of spiral blades and heating wires into the polyol reactor, the problems of simple discharge structure and difficult disassembly in the existing technology are solved, thereby improving the flexibility and practicality of polyol discharge and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANJI KEGUANG NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-12
AI Technical Summary
The existing polyol reactor discharge structure has a single auxiliary discharge method, which lacks flexibility and practicality, and is difficult to disassemble.
A discharge structure comprising a drive shaft, spiral blades, an outer tube unit, a heating wire, and a side tube unit was designed. The structure allows for flexible auxiliary discharge by independently selecting between two methods: spiral blade pushing and heating wire heating. The structure is also easy to disassemble and assemble.
This technology enhances the flexibility and practicality of polyol discharge, allowing for the selection of the optimal discharge method based on different types of polyols, reducing energy consumption without affecting discharge efficiency.
Smart Images
Figure CN224345849U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of chemical equipment technology, and in particular relates to a discharge structure used in a polyol reactor. Background Technology
[0002] Common polyols include polyether polyols, glycerol, sorbitol, ethylene glycol, and pentaerythritol.
[0003] Taking pentaerythritol as an example, its mainstream production method involves a condensation reaction between formaldehyde and acetaldehyde under alkaline conditions, followed by hydrogenation and other steps. This production method can be carried out in either general or specialized reaction vessels.
[0004] The aforementioned reactor structure mainly includes: a reactor body, a feeding structure, a discharging structure, a stirring structure, a temperature control structure, and a pressure control structure. Furthermore, considering the relatively high viscosity of some types of polyols, the existing, relatively efficient discharging structures generally include spiral blades to increase the downward discharge speed of the polyols.
[0005] For example, Chinese utility model patent with authorization announcement number CN218047918 U and authorization announcement date of 2022.12.16 discloses a polyether polyol reactor discharge device, whose main structural components include: tank body, discharge cylinder, discharge component, transmission component, support leg, discharge port, arc-shaped scraper, and scraper.
[0006] The main advantages of the discharge device in this utility model patent are: improving the discharge efficiency of the device, thereby achieving the effects of saving time and effort, and being convenient and quick.
[0007] However, in actual use, this discharge device still has at least the following problems of low practicality and poor flexibility. Specifically, it only has one auxiliary discharge method, that is, after the stirring blade is turned on and rotated, it pushes the polyol downward. Moreover, the entire discharge assembly is difficult to remove after being installed on the discharge cylinder, which will obviously limit the scope of application of the discharge device. Utility Model Content
[0008] This application provides a discharge structure for use in a polyol reactor. The technical problem it aims to solve is how to make the auxiliary discharge effect of the polyol discharge structure more flexible, practical and comprehensive.
[0009] The technical solution adopted by this application to solve the above problems is: a discharge structure for a polyol reactor, including a drive shaft and a spiral blade, a fixed base unit disposed on the bottom surface of the reactor body, an outer tube unit with its upper end disposed on the fixed base unit and sleeved with the discharge pipe, an electric heating wire disposed between the discharge pipe and the outer tube unit for heating the polyol, a movable tube unit screwed onto the outer tube unit for mounting the drive shaft, and a side tube unit disposed on the movable tube unit for discharging the polyol.
[0010] A further preferred technical solution is that the fixing base unit includes a fixing plate disposed on the bottom surface of the vessel body, a vertical block disposed on the fixing plate, a bolt hole disposed on the vertical block, and a radial bolt disposed on the bolt hole for connecting the outer tube unit.
[0011] A further preferred technical solution is that the outer tube unit includes a circular tube sleeved on the outside of the discharge tube, a mounting hole on the circular tube for connecting the radial bolt, and a limiting ring on the inner ring surface of the circular tube for engaging the end face of the discharge tube and supporting the heating wire.
[0012] A further preferred technical solution is that the outer tube unit further includes a screw-in depth positioning ring disposed on the inner annular surface and / or outer surface of the circular tube, which is further away from the mounting hole than the limiting ring, and is used to engage the end face of the movable tube unit.
[0013] A further preferred technical solution is that the outer tube unit also includes a groove for connecting heating wires on the end face of the round tube.
[0014] A further preferred technical solution is that the movable tube unit includes a detachable round tube screwed onto the inner or outer annular surface of the round tube, a discharge hole disposed on the detachable round tube for mounting the side tube unit, and an annular end plate disposed on the detachable round tube at one end away from the mounting hole for mounting the drive shaft.
[0015] A further preferred technical solution is that the side tube unit includes a protruding tube disposed on the discharge hole and a valve disposed on the protruding tube.
[0016] A further preferred technical solution is that the movable tube unit further includes an axial limiting bearing disposed on the annular end plate and used to mount the drive shaft.
[0017] A further preferred technical solution is that the movable tube unit further includes an annular blocking block disposed on the exposed surface of the annular end plate and used to support the axial limiting bearing.
[0018] A further preferred technical solution is that the movable tube unit further includes a circular sealing block for being disposed on the annular end plate and used in combination with the drive shaft.
[0019] The beneficial effects of this application include at least the following three points.
[0020] First, the discharge structure combines the auxiliary discharge effects of spiral blade propulsion and heating to reduce viscosity. Moreover, these two effects are relatively independent and can be selected to be turned on or off, making the polyol discharge operation more flexible, practical and comprehensive.
[0021] Secondly, the structure corresponding to the aforementioned propulsive effect of the spiral blades has the advantage of being easy to disassemble and assemble, so that when it is not in use, it will not block the polyol that is being discharged, and will not hinder the discharge operation of the polyol.
[0022] Third, the structure corresponding to the above-mentioned heating and viscosity reduction effect has the comprehensive advantages of being stable to install, easy to use, and not hindering the polyol discharge operation when not in use. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of this application.
[0024] Figure 2 This is a schematic diagram illustrating the installation method of this application.
[0025] Figure 3 This is a schematic diagram of one installation method for the fixed base unit in this application.
[0026] Figure 4 This is a structural schematic diagram of the fixed base unit in this application.
[0027] Figure 5 This is a schematic diagram of the structure of the outer tube unit in this application.
[0028] Figure 6 This is a schematic diagram of the first usage method of the active tube unit in this application.
[0029] Figure 7 This is a schematic diagram of the second usage method of the active tube unit in this application.
[0030] Figure 8 This is a schematic diagram showing the installation location of the heating wire in this application.
[0031] The meanings of the markings in the diagram are as follows.
[0032] a) vessel body; b) discharge pipe;
[0033] Drive shaft 11, helical blade 12;
[0034] Fixed base unit 1, outer tube unit 2, heating wire 3, movable tube body unit 4, side tube body unit 5;
[0035] Fixing plate 101, vertical block 102, bolt hole 103, radial bolt 104;
[0036] 201 round tube, 202 mounting hole, 203 limiting ring, 204 screw connection depth positioning ring, 205 heating wire connection groove;
[0037] Detachable round tube 401, discharge hole 402, annular end plate 403, axial limit bearing 404, annular blocking block 405, circular sealing block 406;
[0038] Protruding pipe 501, valve 502. Detailed Implementation
[0039] The following description is merely a preferred embodiment of this application and is not intended to limit the scope of this application.
[0040] like Figures 1-8 As shown, a discharge structure for a polyol reactor includes a drive shaft 11 and a spiral blade 12. It also includes a fixed base unit 1 disposed on the outer bottom surface of the reactor body a, an outer tube unit 2 disposed on the fixed base unit 1 and sleeved with the discharge pipe b, an electric heating wire 3 disposed between the discharge pipe b and the outer tube unit 2 for heating the polyol, a movable tube unit 4 screwed onto the outer tube unit 2 for mounting the drive shaft 11, and a side tube unit 5 disposed on the movable tube unit 4 for discharging the polyol.
[0041] In this embodiment, the spiral blade 12 is welded to the drive shaft 11 to form an integral structure for continuously pushing polyol products. Both the integral structure and the heating wire 3 are commercially available products.
[0042] Generally, this discharge structure is used vertically, that is, the commonly used discharge pipe b is usually vertical. When the spiral blade 12 is in use, its upper end is appropriately inserted into the vessel body a, and its lower end is exposed and connected to the drive motor. The heating wire 3 is spiral in shape and is sleeved on the outer ring surface of the discharge pipe b, thereby heating the polyol to reduce its viscosity, which also facilitates the discharge operation.
[0043] Specifically, the discharge structure can be used in the following four different ways.
[0044] First, both the spiral blade 12 and the heating wire 3 are used to quickly discharge polyols through two methods: rotation and heating to reduce viscosity. At this time, the fixed base unit 1, the outer tube unit 2, the movable tube unit 4, and the side tube unit 5 are connected in sequence. The polyol passes through the above four in sequence and finally obtains a relatively fast discharge speed at the side tube unit 5. This method of use is suitable for polyols whose viscosity decreases significantly with the increase of temperature, such as the above-mentioned glycerol and sorbitol.
[0045] Secondly, neither the spiral blade 12 nor the heating wire 3 is used. The drive shaft 11, the movable tube unit 4, and the side tube unit 5 can be directly removed from the outer tube unit 2. The polyol is quickly discharged directly from the outer tube unit 2. At this time, the heating wire 3 does not need to be removed from the outer tube unit 2; it is sufficient to simply turn off the power. This method of use is suitable for polyols with relatively low viscosity, such as the aforementioned ethylene glycol.
[0046] Third, the spiral blade 12 is used, but the heating wire 3 is not used. At this time, the fixed base unit 1, the outer tube unit 2, the movable tube unit 4, and the side tube unit 5 are connected in sequence. The polyol passes through the above four in sequence. The heating wire 3 is not removed or energized. Finally, a relatively fast discharge speed is obtained at the side tube unit 5. This method of use is suitable for polyols with relatively low viscosity and whose viscosity cannot be significantly reduced by heating.
[0047] Fourth, the spiral blade 12 is not used, but the heating wire 3 is used. At this time, the drive shaft 11, the movable tube unit 4 and the side tube unit 5 can be directly removed from the outer tube unit 2. The polyol is quickly discharged directly from the outer tube unit 2, and the heating wire 3 is powered on. This method of use is suitable for polyols with relatively low viscosity, and the heating method can further and significantly reduce their viscosity.
[0048] In summary, the heating and viscosity-reducing effect of the heating wire 3 can be considered as a supplement and replacement for the material discharge effect of the rotating spiral blade 12. Correspondingly, the energy consumption of the heating wire 3 is much lower than that of the drive motor mounted on the drive shaft 11. This is one of the reasons for including the heating wire 3. When the polyol itself is relatively easy to discharge and the heating and viscosity-reducing effect is significant, the heating wire 3 can be turned on and the drive motor can be turned off, thereby achieving the combined advantages of sufficient discharge speed and relatively low energy consumption.
[0049] Finally, the main material of the discharge structure is stainless steel, aluminum alloy, or fluoroplastic.
[0050] The fixed base unit 1 includes a fixed plate 101 disposed on the outer bottom surface of the vessel body a, a vertical block 102 disposed on the fixed plate 101, a bolt hole 103 disposed on the vertical block 102, and a radial bolt 104 disposed on the bolt hole 103 for connecting the outer tube unit 2.
[0051] In this embodiment, the number of fixed base units 1 is 2-4, which are evenly distributed around the discharge pipe b in a circumferential direction.
[0052] The fixing piece 101 is welded to the vessel body a and integrally formed with the vertical block 102. The side of the vertical block 102 facing the outer tube unit 2 is arc-shaped, which is used to engage the outer tube unit 2 and improve the installation stability of the outer tube unit 2.
[0053] The outer tube unit 2 includes a circular tube 201 sleeved on the outside of the discharge tube b, a mounting hole 202 on the circular tube 201 for connecting the radial bolt 104, and a limiting ring 203 on the inner ring surface of the circular tube 201, which engages with the end face of the discharge tube b and supports the heating wire 3.
[0054] In this embodiment, the bolt hole 103 and the mounting hole 202 are provided in pairs, and at least one of them is a threaded hole. When the radial bolt 104 is fully connected to the mounting hole 202, the upper surface of the limiting ring 203 is fully pressed against the lower end face of the discharge pipe b, thereby preventing polyol material from accidentally entering the gap between the discharge pipe b and the round pipe 201.
[0055] At this time, the upper end face of the circular tube 201 does not need to fully abut against the outer bottom surface of the vessel body a, and the width of the single-sided gap between the discharge pipe b and the circular tube 201 is 1.0-2.0cm, which is then used to effectively load the heating wire 3.
[0056] Furthermore, the spiral heating wire 3 has a relatively small diameter, allowing it to be directly fitted onto the outer ring surface of the discharge pipe b, thereby achieving a more direct and efficient heating effect for polyols.
[0057] The outer tube unit 2 further includes a screw-in depth positioning ring 204 disposed on the inner annular surface and / or outer surface of the circular tube 201, and further away from the mounting hole 202 than the limiting ring 203, and used to engage the end face of the movable tube unit 4.
[0058] In this embodiment, the inner ring surface and / or outer surface of the lower end of the circular tube 201 are provided with threaded sections. The correct way to install the movable tube unit 4 on the circular tube 201 is as follows: the former is continuously screwed upward, thereby fully abutting the screw depth positioning ring 204, so that the movable tube unit 4 is not easy to fall off accidentally.
[0059] Correspondingly, when the screw-in depth positioning ring 204 is located on the inner ring surface of the circular tube 201, it fully abuts against the upper end surface of the movable tube unit 4, thus preventing the leakage of polyol material from the gap.
[0060] The outer tube unit 2 also includes a heating wire connection slot 205 disposed on the end face of the round tube 201.
[0061] In this embodiment, the connecting wire of the heating wire 3 passes through the heating wire connecting wire slot 205 and is connected to an external power source, ensuring that the heating wire 3 can be turned on in a controllable manner, while preventing the connecting wire from being crushed.
[0062] The shape of the groove 205 for the heating wire connection is rectangular, semi-circular, or a combination of a rectangle and a semi-circle.
[0063] The movable tube unit 4 includes a detachable round tube 401 screwed onto the inner or outer annular surface of the round tube 201, a discharge hole 402 disposed on the detachable round tube 401 for mounting the side tube unit 5, and an annular end plate 403 disposed on the detachable round tube 401 at one end away from the mounting hole 202 for mounting the drive shaft 11.
[0064] In this embodiment, the detachable circular tube 401 and the side tube unit 5 are integrally formed. When the drive shaft 11 and the spiral blade 12 are used as a whole, the drive shaft 11 is inserted into the circular hole on the annular end plate 403, and the spiral blade 12 is located above the annular end plate 403 and can partially enter the vessel body a.
[0065] The drive shaft 11 and the annular end plate 403 can be protected against leakage and lubrication using existing technologies, such as by using a maintenance-free bearing. This bearing has relatively high sealing performance, which can prevent significant leakage of polyol materials, and of course, it also has basic bearing functions.
[0066] The side tube unit 5 includes a protruding tube 501 disposed on the discharge hole 402, and a valve 502 disposed on the protruding tube 501.
[0067] In this embodiment, the protruding tube 501 is arranged horizontally and is a square or round tube. The valve 502 is a commercially available product such as a butterfly valve or a ball valve, which can ensure that the protruding tube 501 can be completely closed and the discharge rate of polyol can be appropriately adjusted.
[0068] The installation and use of the valve 502 shall be in accordance with the existing technology.
[0069] The movable tube unit 4 also includes an axial limiting bearing 404 disposed on the annular end plate 403 and used to mount the drive shaft 11.
[0070] In this embodiment, the prominent feature of the axial limiting bearing 404 is that it prevents the integrated structure of the drive shaft 11 and the helical blade 12 from spontaneously falling down after installation.
[0071] The axial limiting bearing 404 is a commercially available product, specifically named, for example, a deep groove ball bearing or a self-aligning ball bearing. Of course, the sealing performance of deep groove ball bearings and self-aligning ball bearings may not be as good as the aforementioned maintenance-free bearings, but this does not affect the normal use of the drive shaft 11 and the helical blade 12; either type of bearing can be installed.
[0072] The movable tube unit 4 also includes an annular blocking block 405 disposed on the exposed surface of the annular end plate 403 and used to support the axial limiting bearing 404.
[0073] In this embodiment, the inner diameter of the annular blocking block 405 is relatively small, ensuring that it can support the outer ring of the axial limiting bearing 404, but will not touch the inner ring of the axial limiting bearing 404, so that the axial limiting bearing 404 can be stably installed and used normally.
[0074] The detachable round tube 401, the annular end plate 403, and the annular blocking block 405 are integrally formed.
[0075] The movable tube unit 4 also includes a circular sealing block 406 for being disposed on the annular end plate 403 and used selectively with the drive shaft 11.
[0076] In this embodiment, the circular sealing block 406 is made of ordinary rubber and is embedded in the circular hole of the annular end plate 403 when in use. At this time, the overall structure of the drive shaft 11 and the spiral blade 12 is not installed or used.
[0077] At this point, material leakage is unlikely at the annular end plate 403. The discharge structure only triggers the auxiliary discharge function of heating and reducing viscosity, and the discharge speed is already sufficient. Of course, at this point, the entire structure of the movable tube unit 4 and the side tube unit 5 can even be removed.
[0078] If the annular blocking block 405 is provided, it can also prevent the circular sealing block 406 from falling off. When the circular sealing block 406 is in use, the axial limiting bearing 404 is also not used.
[0079] Finally, the word "used in" in this embodiment means that it can be used in, rather than only used in. For example, the discharge structure can also be used in a carboxymethyl cellulose reactor.
[0080] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this application. These are non-inventive modifications and are protected by patent law as long as they are within the scope of the claims of this application.
Claims
1. A discharge structure for use in a polyol reactor, comprising a drive shaft (11) and helical blades (12), characterized in that: It also includes a fixed base unit (1) disposed on the outer bottom surface of the vessel body (a), an outer tube unit (2) with its upper end disposed on the fixed base unit (1) and sleeved with the discharge pipe (b), an electric heating wire (3) disposed between the discharge pipe (b) and the outer tube unit (2) and used for heating the polyol, a movable tube unit (4) screwed onto the outer tube unit (2) and used for mounting the drive shaft (11), and a side tube unit (5) disposed on the movable tube unit (4) and used for discharging the polyol.
2. The discharge structure for use in a polyol reactor according to claim 1, characterized in that: The fixed base unit (1) includes a fixed plate (101) disposed on the outer bottom surface of the vessel body (a), a vertical block (102) disposed on the fixed plate (101), a bolt hole (103) disposed on the vertical block (102), and a radial bolt (104) disposed on the bolt hole (103) for connecting the outer tube unit (2).
3. The discharge structure for use in a polyol reactor according to claim 2, characterized in that: The outer tube unit (2) includes a round tube (201) sleeved on the outside of the discharge tube (b), a mounting hole (202) on the round tube (201) for connecting the radial bolt (104), and a limiting ring (203) on the inner ring surface of the round tube (201) for engaging the end face of the discharge tube (b) and for supporting the heating wire (3).
4. The discharge structure for use in a polyol reactor according to claim 3, characterized in that: The outer tube unit (2) further includes a screw-in depth positioning ring (204) disposed on the inner annular surface and / or outer surface of the circular tube (201), and further away from the mounting hole (202) than the limiting ring (203), and used to engage the end face of the movable tube unit (4).
5. The discharge structure for use in a polyol reactor according to claim 3, characterized in that: The outer tube unit (2) also includes a heating wire connection slot (205) provided on the end face of the round tube (201).
6. The discharge structure for use in a polyol reactor according to claim 3, characterized in that: The movable tube unit (4) includes a detachable round tube (401) screwed onto the inner or outer annular surface of the round tube (201), a discharge hole (402) disposed on the detachable round tube (401) for mounting the side tube unit (5), and an annular end plate (403) disposed on the detachable round tube (401) at one end away from the mounting hole (202) for mounting the drive shaft (11).
7. The discharge structure for use in a polyol reactor according to claim 6, characterized in that: The side tube unit (5) includes a protruding tube (501) disposed on the discharge hole (402) and a valve (502) disposed on the protruding tube (501).
8. The discharge structure for use in a polyol reactor according to claim 6, characterized in that: The movable tube unit (4) also includes an axial limiting bearing (404) disposed on the annular end plate (403) and used to mount the drive shaft (11).
9. The discharge structure for use in a polyol reactor according to claim 8, characterized in that: The movable tube unit (4) also includes an annular blocking block (405) disposed on the exposed surface of the annular end plate (403) and used to support the axial limiting bearing (404).
10. The discharge structure for use in a polyol reactor according to claim 6, characterized in that: The active tube unit (4) also includes a circular sealing block (406) for use on the annular end plate (403) and for use with the drive shaft (11).