Built-in stirring equipment of phenolic resin reaction kettle

Abstract

The utility model relates to the technical field of chemical equipment, and particularly discloses a built-in stirring device of a phenolic resin reaction kettle, which comprises a main shaft, a stirring shaft, a stirring shaft, a stirring shaft, a stirring shaft, a stirring shaft, a stirring shaft, a stirring shaft, a stirring shaft, a stirring shaft, a stirring shaft and a stirring shaft, and is characterized in that the main shaft vertically penetrates through the reaction kettle, and two ends are provided with rotary seals rotationally mounted with the reaction kettle; a superheat pipe used for conveying a heat medium is arranged in the stirring blade, and the superheat pipe is communicated with an external heat supply cycle; by adopting a mode of arranging the overheating pipe in the stirring device, a heat source medium is directly heated from the central position of a material through the stirring blades, and heat is supplied to the material from the two sides by combining with heating of the outer wall of the kettle body, so that the temperature of the material is quickly increased, meanwhile, the heat source temperature requirement of the outer wall of the kettle body is reduced, and the heat directly transferred to the kettle body at the upper layer is reduced; the temperature of the upper-layer kettle body is reduced and slag bonding is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a built-in stirring device for a phenolic resin reaction kettle. Background Art

[0002] Phenolic resin needs to be heated for reaction during production, and this process is carried out in a reactor. During the heating process of phenolic resin preparation, some materials in the reactor will be vaporized. Since there is no material in a large part of the reactor space during the processing, and the temperature of the reactor wall in these spaces is relatively high, when the vaporized material contacts the reactor wall in these spaces, the material forms slag at the position of the reactor wall. The formation of these slags reduces the discharge of materials and increases the frequency of cleaning the reactor.

[0003] A Chinese patent with application number 202011183027.0 discloses a layered heating reactor for phenolic resin processing, which utilizes layered heating of the outer wall of the reactor to reduce the reactor wall temperature in the upper cavity area to reduce slagging on the inner wall. However, in actual production, in order to quickly increase the temperature in the reactor, the temperature of the heat source needs to be increased so that the reactor body temperature is much higher than the internal material, so that rapid heat exchange can be carried out and the materials in the reactor are heated sequentially from the outside to the inside. However, in this process, in addition to transferring the heat from the heat source to the internal material, most of the heat is transferred to the upper layer through the reactor body itself, and the temperature of the inner wall of the reactor body is still high, and there is also the problem of slagging. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a built-in stirring device for a phenolic resin reactor. The method of building a superheating pipe inside the stirring device is adopted to heat the heat source medium directly from the center of the material through the stirring blades. Combined with the heating of the outer wall of the kettle body, heat is supplied to the material from both sides to make it heat up quickly. At the same time, the heat source temperature requirement of the outer wall of the kettle body is reduced, the heat transfer directly to the upper kettle body is reduced, the temperature of the upper kettle body is reduced, and slagging is reduced, which can effectively solve the problems in the background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a phenolic resin reaction kettle with a built-in stirring device, comprising:

[0006] A main shaft is used to vertically penetrate the reactor, and is provided with rotary seals at both ends for rotational installation with the reactor, and a gear or pulley for power input is coaxially fixedly provided at one end;

[0007] The stirring blade is provided with a superheating pipe for transmitting heat medium inside, and the superheating pipe is connected to an external heating cycle.

[0008] As a preferred technical solution of the utility model, the two ends of the main shaft are unconnected hollow structures, which are respectively provided as a heating channel and a reflux channel, and the superheating pipe of the stirring blade is connected in series with the heating channel and the reflux channel;

[0009] Through the hollow design of the main shaft, the main shaft itself can be used as a transmission pipeline for the heat medium, which reduces the complexity of the mixing equipment, reduces the cost, and improves its stability in use.

[0010] As a preferred technical solution of the utility model, the stirring blade includes an upper blade section and a lower blade section that diverge radially, and a spiral blade section connecting the outer ends of the two blade sections;

[0011] The upper blade segment and the lower blade segment have opposite inclination directions, and the spiral blade segment is smoothly connected to the outer ends of the upper blade segment and the lower blade segment;

[0012] When the main shaft rotates, the upper blade section and the lower blade section are inclined in opposite directions, and the flow direction of the material is opposite, so that the material can form a large flow cycle while forming a small flow of reciprocating kneading, thereby promoting the uniformity of its mixing.

[0013] As a preferred technical solution of the utility model, the cross section of the stirring blade is shuttle-shaped, and the superheating pipe is located at the rearmost position in the middle of the stirring blade;

[0014] The shuttle-shaped cross-section design helps to increase its surface area, facilitating heat exchange between the heat medium and the material in the superheated tube. At the same time, the cross-sectional areas of the edges on both sides are small, and the resistance is reduced during forward and reverse stirring.

[0015] As a preferred technical solution of the utility model, the axial ends of the upper blade section and the lower blade section are both provided with shaft connectors fixedly connected to the main shaft, and the shaft connectors are hollow structures connected to the heat pipe;

[0016] By setting a shaft connector, it is connected with the superheating pipe in the stirring blade, which facilitates its connection with the hollow part in the main shaft, effectively reducing the overall processing difficulty.

[0017] As a preferred technical solution of the utility model, a plurality of groups of stirring blades are arranged on the main shaft along the axial direction, and the stirring blades are not completely overlapped along the axial projection of the main shaft, and a shaft connector is arranged between the two ends of two adjacent groups of stirring blades, and the shaft connector is coaxially fixedly connected to the main shaft and has a hollow structure connected to the heat pipe inside;

[0018] By providing a shaft connector, multiple groups of stirring blades can be connected to each other to form a large heating circuit, and increasing the number of stirring blades can improve the overall stirring efficiency.

[0019] As a preferred technical solution of the utility model, a plurality of groups of retaining springs for fixing the axial position of the shaft connector are arranged along the axis of the main shaft, and the axial position of the shaft connector is limited by the retaining springs to prevent displacement thereof.

[0020] As a preferred technical solution of the utility model, both ends of the main shaft are respectively provided with rotating connectors for connecting the heating channel or the reflux channel;

[0021] By setting a rotating connector, the sealing stability of the connection position of the heating channel and the return channel is ensured during the rotation of the main shaft.

[0022] Compared with the prior art, the utility model has the following beneficial effects: the built-in stirring device of the phenolic resin reactor adopts a method of integrating a superheating pipe inside the stirring blade, so that the stirring blade can heat the material synchronously when stirring the material, so that the material radiates heat from the central area to the outside, and combined with the heating unit of the outer wall of the reactor, double heating is performed, so that the material can quickly reach the required production temperature. At the same time, after the central heating of the material, the heat source temperature of the outer wall of the reactor can be appropriately reduced, thereby reducing the temperature of the reactor wall, reducing the temperature transfer to the upper reactor wall, and thereby alleviating the slagging of the upper reactor wall;

[0023] At the same time, a linear spiral stirring blade is used, and the upper blade section and the lower blade section are inclined in opposite directions, which can produce forces in opposite directions on the material, thereby producing a kneading effect on the material and promoting the mixing reaction of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is the front view of the utility model;

[0026] Figure 3 It is a cross-sectional view of the utility model.

[0027] In the figure: 1. stirring blade; 101. upper blade section; 102. spiral blade section; 103. lower blade section; 104. shaft connector; 105. superheating pipe; 2. main shaft; 201. reflux channel; 202. heating channel; 3. retaining spring; 4. rotary seal; 5. rotating connector. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0029] See also Figure 1-Figure 3 The utility model provides a technical solution: a phenolic resin reaction kettle with a built-in stirring device, including:

[0030] The main shaft 2 is used to vertically penetrate the reactor, and is provided with rotary seals 4 at both ends for rotationally mounting with the reactor, and a gear or pulley for power input is coaxially fixedly provided at one end; the main shaft 2 is driven to rotate by an external power source and the gear or pulley, and the use of the rotary seal 4 effectively increases the sealing performance of the connection position between the main shaft 2 and the reactor;

[0031] See also Figure 3 The two ends of the main shaft 2 are unconnected hollow structures, which are respectively set as a heat supply channel 202 and a reflux channel 201. The superheating pipe 105 of the stirring blade 1 is connected in series with the heat supply channel 202 and the reflux channel 201. Through the hollow design of the main shaft 2, the main shaft 2 itself is used as a transmission pipeline for the heat medium, which reduces the complexity of the stirring equipment, reduces the cost, and improves its stability in use;

[0032] Rotating connectors 5 for connecting the heating channel 202 or the return channel 201 are respectively provided at both ends of the main shaft 2; by providing the rotating connector 5, the sealing stability of the connection position of the heating channel 202 and the return channel 201 is ensured during the rotation of the main shaft 2.

[0033] See also Figure 1 and Figure 2 The stirring blade 1 is provided with a superheating pipe 105 for transmitting heat medium, and the superheating pipe 105 is connected to an external heating cycle.

[0034] The stirring blade 1 includes an upper blade section 101 and a lower blade section 103 which diverge radially, and a spiral blade section 102 which connects the outer ends of the two blades; the cross section of the stirring blade 1 is shuttle-shaped, and the superheating tube 105 is located at the middle and rear position of the stirring blade 1; the shuttle-shaped cross-sectional design helps to increase its surface area, facilitating heat exchange between the heat medium and the material in the superheating tube 105, and at the same time, the cross-sectional areas of the edges on both sides are small, so that the resistance is reduced during forward and reverse stirring.

[0035] The upper blade segment 101 and the lower blade segment 103 are inclined in opposite directions, and the spiral blade segment 102 is smoothly connected to the outer ends of the upper blade segment 101 and the lower blade segment 103;

[0036] When the main shaft 2 rotates, the upper blade section 101 and the lower blade section 103 are inclined in opposite directions, and the flow directions of the materials are opposite, so that the materials can form a large flow cycle while also forming a small flow of reciprocating kneading, thereby promoting the uniformity of the mixing;

[0037] When the stirring blade 1 rotates clockwise, the upper blade segment 101 generates downward pressure, the lower blade segment 103 generates an upward support force, and the spiral blade segment 102 generates an upward and outward diffusion force, thereby causing the material to sink in the middle, turn up at the edges, and repeatedly rub and wriggle in the middle layer. The repeatedly wriggling material reciprocates in contact with the stirring blade 1 for heat exchange, thereby improving the heat exchange efficiency.

[0038] The axial ends of the upper blade section 101 and the lower blade section 103 are both provided with shaft connectors 104 fixedly connected to the main shaft 2, and the shaft connector 104 is a hollow structure connected to the heat pipe 105;

[0039] By providing the shaft connector 104, it is connected to the superheating pipe 105 in the stirring blade 1, so that it is convenient to connect with the hollow part in the main shaft 2, which effectively reduces the overall processing difficulty.

[0040] Several groups of stirring blades 1 are arranged along the axial direction of the main shaft 2. The stirring blades 1 are not completely overlapped along the axial projection of the main shaft 2. A shaft connector 104 is provided between the two ends of two adjacent groups of stirring blades 1. The shaft connector 104 is coaxially fixedly connected to the main shaft 2 and has a hollow structure connected to the heat pipe 105. The shaft connector 104 is provided to facilitate the mutual connection between multiple groups of stirring blades 1, which are connected in series into a large heating circuit, and adding stirring blades 1 can improve the overall stirring efficiency.

[0041] Several groups of retaining springs 3 for fixing the axial position of the shaft connector 104 are arranged along the axis of the main shaft 2. The retaining springs 3 limit the axial position of the shaft connector 104 to prevent displacement.

[0042] When using:

[0043] After the stirring blade 1 and the main shaft 2 are assembled, they are built into the reactor, and the reflux channel 201 and the heat supply channel 202 are connected to the external heat supply cycle by rotating the connector 5, wherein the lower end of the main shaft 2 is the heat supply channel 202, and the upper end is the reflux channel 201, that is, the heat medium enters from the bottom and flows out from the top. During the process, the heat medium passes through the superheating tube 105 of the stirring blade 1 and exchanges heat with the contacting material through the surface of the stirring blade 1. When the stirring blade 1 rotates, it is in a moving state, heating the materials at different positions, which helps the internal temperature of the material to rise at a uniform rate, and the temperature difference with the material close to the reactor wall is small;

[0044] The material is heated from the middle, which increases the temperature rise rate, can reduce the temperature of the heat source of the kettle wall, reduce the heat transfer of the kettle body and the kettle wall, and reduce the temperature of the upper kettle body, thereby slowing down the internal slagging.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A phenolic resin reactor with a built-in stirring device, characterized in that: include, A main shaft (2) is used to vertically penetrate the reactor, and is provided with rotary seals (4) at both ends for rotationally mounting with the reactor, and a gear or pulley for power input is coaxially fixedly provided at one end; The stirring blade (1) is provided with a superheating pipe (105) for transmitting a heat medium therein, and the superheating pipe (105) is connected to an external heating cycle.

2. The phenolic resin reaction kettle with built-in stirring device according to claim 1, characterized in that: The two ends of the main shaft (2) are non-connected hollow structures, which are respectively provided as a heating channel (202) and a reflux channel (201); the superheating pipe (105) of the stirring blade (1) is connected in series with the heating channel (202) and the reflux channel (201).

3. The phenolic resin reaction kettle with built-in stirring device according to claim 1, characterized in that: The stirring blade (1) comprises an upper blade section (101) and a lower blade section (103) which diverge radially, and a spiral blade section (102) connecting the outer ends of the upper blade section and the lower blade section (103); The upper blade segment (101) and the lower blade segment (103) are inclined in opposite directions, and the spiral blade segment (102) is smoothly connected to the outer ends of the upper blade segment (101) and the lower blade segment (103).

4. The phenolic resin reaction kettle with built-in stirring device according to claim 3, characterized in that: The cross section of the stirring blade (1) is shuttle-shaped, and the superheating tube (105) is located at the rearmost position in the middle of the stirring blade (1).

5. The phenolic resin reaction kettle with built-in stirring device according to claim 3, characterized in that: The axial ends of the upper blade section (101) and the lower blade section (103) are both provided with shaft connectors (104) fixedly connected to the main shaft (2), and the shaft connector (104) is a hollow structure connected to a heat pipe (105).

6. The phenolic resin reaction kettle with built-in stirring device according to claim 3, characterized in that: A plurality of groups of stirring blades (1) are arranged along the axial direction of the main shaft (2); the stirring blades (1) are not completely overlapped along the axial projection of the main shaft (2); a shaft connector (104) is arranged between the two ends of two adjacent groups of stirring blades (1); the shaft connector (104) is coaxially fixedly connected to the main shaft (2) and has a hollow structure inside which is connected to a heat pipe (105).

7. The phenolic resin reaction kettle with built-in stirring device according to claim 5 or 6, characterized in that: A plurality of groups of retaining springs (3) for fixing the axial position of the shaft connector (104) are arranged along the axial line of the main shaft (2).

8. The phenolic resin reaction kettle with built-in stirring device according to claim 2, characterized in that: Rotating connectors (5) for connecting the heat supply channel (202) or the return channel (201) are respectively provided at both ends of the main shaft (2).

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