Reaction kettle for producing silicone oil for polyurethane foam

Abstract

The utility model discloses a reaction kettle for producing silicone oil for polyurethane foam, which is characterized in that a top cover is arranged at the top end of the reaction kettle, and an outer cylinder is sleeved on the outer wall of the reaction kettle; the top cover is rotatably connected with a driving shaft, the upper part of the driving shaft is provided with a fixed plate, the fixed plate is provided with a driving gear above the fixed plate, the fixed plate is rotatably connected with first stirring shafts on two sides of the driving shaft, the first stirring shafts are provided with first stirring blades, and the top ends of the first stirring shafts are provided with driven gears; and the driven gear is engaged with the driven gear. The reaction kettle overcomes the defects in the prior art, is reasonable in design and good in stirring effect, can avoid layering of raw materials in the reaction kettle, and has higher social use value and application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of silicone oil production, in particular to a reaction kettle for producing silicone oil for polyurethane foam. Background Art

[0002] Polyurethane foam is mainly composed of polyether or polyester polyol, isocyanate, blowing agent, catalyst and silicone oil. Among them, polyether or polyester polyol is the main matrix of polyurethane foam, which has good flexibility and elasticity and can provide the physical properties required by foam materials. Isocyanate is a cross-linking agent of polyurethane foam. It reacts with polyol to form a polymer network structure, so that the foam material has a certain strength and stability. The blowing agent is used to generate bubbles and form pores. The catalyst is used to promote polymerization reaction and accelerate the formation of polymers. Silicone oil also plays an important role in the foaming process. By improving the nucleation and foam stabilization properties of silicone oil, the closed cell rate of foam can be increased, the pores can be made finer, and the thermal conductivity of foam can be reduced; by adjusting the emulsification properties of silicone oil, the surface properties of foam can be improved and defects can be reduced.

[0003] Existing silicone oil production reactors are usually equipped with a stirring mechanism to increase the reaction rate. However, due to the different densities of the raw materials, the various raw materials are prone to stratification during the stirring process, resulting in poor reaction effects and a slow silicone oil production rate. To solve the above problems, a reactor for polyurethane foam silicone oil production is provided, which is equipped with a vertical stirring component to avoid stratification of the raw materials. Utility Model Content

[0004] In order to solve the problems mentioned in the above background technology, the utility model provides a reaction kettle for producing silicone oil for polyurethane foam.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A reactor for producing silicone oil for polyurethane foam comprises a top cover at the top of the reactor, an outer cylinder is sleeved on the outer wall of the reactor; a driving shaft is rotatably connected to the top cover, a fixed plate is provided at the upper part of the driving shaft, a driving gear is provided on the fixed plate and above the fixed plate, the fixed plates are located on both sides of the driving shaft and are rotatably connected to a first stirring shaft, a first stirring blade is provided on the first stirring shaft, a driven gear is provided at the top of the first stirring shaft, and the driven gear is meshed and connected with the driven gear.

[0007] Furthermore, the top cover is provided with a feeding port, and the bottom of the reaction kettle is provided with a discharging port.

[0008] Furthermore, a second stirring shaft is horizontally rotatably connected to the driving shaft, a second stirring blade is provided on the second stirring shaft, first bevel gears are provided at both ends of the second stirring shaft, a second bevel gear is provided at a position corresponding to the second stirring shaft on the first stirring shaft, and the second bevel gear is meshingly connected with the first bevel gear.

[0009] Furthermore, a cylinder is provided at the top of the machine body above the second guide roller, and the cleaning assembly includes a fixing frame arranged on the fixing plate and an annular tube fixed to the bottom of the top cover, a scraper is provided at the outer end of the fixing frame, the annular tube is fixedly connected to the bottom of the top cover through a flange, a water inlet is provided at the top of the annular tube, a nozzle is provided at the bottom of the annular tube, and the nozzle is connected to an external high-pressure water source.

[0010] Furthermore, a limiting groove is provided on the side wall of the fixing plate, and a limiting rod is provided on the side wall of the fixing frame, and the limiting rod is engaged and connected with the limiting groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The driven gear is connected with the driven gear to drive the driving shaft to rotate, thereby driving the first stirring blade to stir. The stirring shaft rotates with the driving shaft as the axis and cooperates with the driving shaft to rotate, so that the material can be fully stirred. The second bevel gear is meshed with the first bevel gear to drive the second stirring shaft to rotate, thereby driving the second stirring blade to stir in the vertical direction, thereby avoiding stratification of multiple raw materials in the reactor, resulting in insufficient reaction, and improving the stirring effect.

[0013] 2. After the reaction in the reactor is completed, the inner wall of the reactor needs to be cleaned. The silicone oil product remaining in the reactor is scraped off by contacting the scraper with the inner wall of the reactor. At the same time, high-pressure water enters the annular pipe and is sprayed out through the nozzle to clean the inner wall of the reactor. No manual cleaning is required, and the next loading reaction can be carried out.

[0014] In summary, the utility model overcomes the shortcomings of the prior art, has a reasonable design, a good stirring effect, can avoid stratification of raw materials in the reactor, and has a high social use value and application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the internal structure of the reactor of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the stirring assembly of the utility model;

[0020] Figure 5 For the utility model Figure 4 A magnified view of the structure at center;

[0021] Figure 6 This is a schematic diagram of the scraper structure of the utility model;

[0022] Figure 7 This is a schematic diagram of the slider structure of the utility model;

[0023] Figure 8 This is a schematic diagram of the annular tube structure of the utility model.

[0024] In the figure: reactor 1, outer cylinder 2, sealing ring 12, top cover 3, feeding port 31, discharging port 11, driving shaft 32, driving motor 321, driving gear 325, fixing plate 33, first stirring shaft 331, first stirring blade 332, driven gear 334, second stirring shaft 322, second stirring blade 323, first bevel gear 324, second bevel gear 333, cleaning component 4, fixing frame 41, scraper 422, annular tube 44, flange 441, water inlet 442, nozzle 443, limiting rod 42, fixing groove 421, limiting groove 43, sliding groove 431, spring 432, slider 433, fixing block 434. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] Reference Figure 1-8A reactor for producing silicone oil for polyurethane foam, comprising a reactor 1, a top cover 3 is provided on the top of the reactor 1, an outer cylinder 2 is sleeved on the outer wall of the reactor 1, which is used to protect the reactor 1 and keep the internal environment of the reactor 1 warm, the top cover 3 is provided with a feeding port 31, and the bottom of the reactor 1 is provided with a discharge port 11;

[0028] A driving shaft 32 is rotatably connected to the top cover 3, and the driving shaft 32 extends to the interior of the reactor 1. A fixed plate 33 is provided on the upper portion of the driving shaft 32, and a driving gear 325 is provided on the fixed plate 33. The fixed plate 33 is located on both sides of the driving shaft 32 and is rotatably connected to a first stirring shaft 331. The first stirring shaft 331 is provided with a first stirring blade 332. A driven gear 334 is provided on the top of the first stirring shaft 331, and the driven gear 334 is meshed and connected with the driven gear 334.

[0029] The material is fed into the reactor from the feeding port 31 and sealed, and the reaction conditions are provided to the reactor to carry out the reaction. The driving motor 321 is started to drive the fixed plate 33 to rotate, thereby driving the first stirring shaft 331 to rotate around the driving shaft 32 as the axis, and the driven gear 334 is connected to the driven gear 334 to drive the driving shaft 32 to rotate, thereby driving the first stirring blade 332 to stir. By rotating the stirring shaft 331 around the driving shaft 32 as the axis and cooperating with the self-rotation of the driving shaft 32, the material can be fully stirred, thereby improving the stirring effect.

[0030] Example 2

[0031] Reference Figure 1-8 The difference between this embodiment and embodiment 1 is that a second stirring shaft 322 is horizontally rotatably connected to the driving shaft 32, a second stirring blade 323 is provided on the second stirring shaft 322, first bevel gears 324 are provided at both ends of the second stirring shaft 322, a second bevel gear 333 is provided on the first stirring shaft 331 at a position corresponding to the second stirring shaft 322, and the second bevel gear 333 is meshingly connected with the first bevel gear 324.

[0032] While the drive shaft 32 rotates, the second bevel gear 333 meshes with the first bevel gear 324 to drive the second stirring shaft 322 to rotate, thereby driving the second stirring blade 323 to achieve stirring in the vertical direction, thereby avoiding stratification of various raw materials in the reactor 1 and causing insufficient reaction.

[0033] Example 3

[0034] Reference Figure 1-8The difference between this embodiment and embodiment 2 is that the cleaning assembly 4 includes a fixing frame 41 arranged on the fixing plate 33 and an annular tube 44 fixed to the bottom of the top cover 3, a scraper 422 is provided at the outer end of the fixing frame 41, the annular tube 44 is fixedly connected to the bottom of the top cover 3 through a flange 441, a water inlet 442 is provided at the top of the annular tube 44, and a nozzle 443 is provided at the bottom of the annular tube 44, and the nozzle 443 is connected to an external high-pressure water source.

[0035] After the reaction in the reactor 1 is completed, the inner wall of the reactor needs to be cleaned. The scraper 422 is in contact with the inner wall of the reactor to scrape off the silicone oil product remaining in the reactor. At the same time, high-pressure water enters the annular pipe 44 and is sprayed out through the nozzle to clean the inner wall of the reactor 1. No manual cleaning is required, and the next loading reaction can be carried out.

[0036] Example 4

[0037] Reference Figure 1-8 The difference between this embodiment and embodiment 3 is that a limiting groove 43 is provided on the side wall of the fixing plate 33, a sliding groove 431 is provided on the inner wall of the limiting groove 43, a spring 432 is provided at the bottom end of the sliding groove 431, a slider 433 is slidably connected in the sliding groove 431, the end of the spring 432 is fixedly connected to the slider 433, a fixing block 434 is provided on the outer wall of the slider 433, a limiting rod 42 is provided on the side wall of the fixing frame 41, the limiting rod 42 is engaged with the limiting groove 43, a fixing groove 421 is provided on the inner wall of the limiting rod 42, and the fixing groove 421 is engaged with the fixing block 434.

[0038] When the scraper needs to be removed, the slider 433 is moved, and the limit between the fixing groove 421 and the fixing block 434 is released. The limit rod 42 can be taken out from the limit groove 43, and the scraper 422 can be removed. The scraper can be detachably arranged to facilitate replacement of the scraper.

[0039] Working principle: the material is put into the reactor from the feeding port 31 and sealed, and the reaction conditions are provided to the reactor to react, and the driving motor 321 is started to drive the fixed plate 33 to rotate, thereby driving the first stirring shaft 331 to rotate with the driving shaft 32 as the axis, and the driven gear 334 is connected to the driven gear 334 to drive the driving shaft 32 to rotate, thereby driving the first stirring blade 332 to stir;

[0040] When the driving shaft 32 rotates, the second bevel gear 333 is meshed with the first bevel gear 324 to drive the second stirring shaft 322 to rotate, thereby driving the second stirring blade 323 to achieve stirring in the vertical direction.

[0041] After the reaction in the reactor 1 is completed, the inner wall of the reactor needs to be cleaned. The scraper 422 abuts against the inner wall of the reactor to scrape off the silicone oil product remaining in the reactor. At the same time, high-pressure water enters the annular pipe 44 and is sprayed out through the nozzle to clean the inner wall of the reactor 1 without manual cleaning.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reactor for producing silicone oil for polyurethane foam, comprising a reactor (1), characterized in that: The top of the reaction kettle (1) is provided with a top cover (3), and the outer wall of the reaction kettle (1) is sleeved with an outer cylinder (2); The top cover (3) is rotatably connected to a driving shaft (32), a fixing plate (33) is provided at an upper position of the driving shaft (32), a driving gear (325) is provided on the fixing plate (33) and located above the fixing plate (33), first stirring shafts (331) are rotatably connected to both sides of the fixing plate (33) located on the driving shaft (32), a first stirring blade (332) is provided on the first stirring shaft (331), a driven gear (334) is provided at the top end of the first stirring shaft (331), and the driven gear (334) is meshedly connected with the driven gear (334).

2. A reaction kettle for producing silicone oil for polyurethane foam according to claim 1, characterized in that: The top cover (3) is provided with a feeding port (31), and the bottom of the reaction kettle (1) is provided with a discharging port (11).

3. A reaction kettle for producing silicone oil for polyurethane foam according to claim 1, characterized in that: A second stirring shaft (322) is horizontally rotatably connected to the driving shaft (32), a second stirring blade (323) is provided on the second stirring shaft (322), first bevel gears (324) are provided at both ends of the second stirring shaft (322), a second bevel gear (333) is provided on the first stirring shaft (331) at a position corresponding to the second stirring shaft (322), and the second bevel gear (333) is meshingly connected with the first bevel gear (324).

4. The reaction kettle for producing silicone oil for polyurethane foam according to claim 1, characterized in that: The cleaning assembly (4) comprises a fixing frame (41) arranged on the fixing plate (33) and an annular tube (44) fixed to the bottom of the top cover (3); a scraper (422) is provided at the outer end of the fixing frame (41); the annular tube (44) is fixedly connected to the bottom of the top cover (3) via a flange (441); a water inlet (442) is provided at the top of the annular tube (44); a nozzle (443) is provided at the bottom of the annular tube (44); and the nozzle (443) is connected to an external high-pressure water source.

5. The reaction kettle for producing silicone oil for polyurethane foam according to claim 1, characterized in that: The side wall of the fixing plate (33) is provided with a limiting groove (43), and the side wall of the fixing frame (41) is provided with a limiting rod (42), and the limiting rod (42) is engaged and connected with the limiting groove (43).

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