CN220610367U - Polyimide powder generating device - Google Patents

Abstract

The present utility model relates to a polyimide powder generating device, comprising: the device comprises a heating heat-preserving cylinder body, wherein a stirring motor is fixedly arranged at the top of the heating heat-preserving cylinder body, a filtering part comprises a filter material box and an air pump fixed on the filter material box, and the filtering part is used for filtering gas; the gas flows into the regulating portion. The device is provided with the filtering part and the gas inflow regulating part, the air pump can continuously suck the gas in the heating and heat-preserving cylinder body into the filter material box through the air suction pipe, the air injection pipe and the air injection cavity for filtering, and meanwhile, when the air pressure is reduced after the gas in the heating and heat-preserving cylinder body is sucked away, the external gas can push the sealing plate away from the separating plate, so that the air pressure in the heating and heat-preserving cylinder body reaches balance, the air pump can smoothly suck the gas in the heating and heat-preserving cylinder body, the linkage operation is realized, the gas in the heating and heat-preserving cylinder body is filtered, and the influence caused by overflow of the outside is avoided.

Description

Polyimide powder generating device

Technical Field

The utility model relates to the technical field of polyimide, in particular to a polyimide powder generating device.

Background

Polyimide (abbreviated as PI) refers to a polymer with imide ring (-CO-NR-CO-) on the main chain, and is one of organic high polymer materials with optimal comprehensive performance. The high temperature resistance of the alloy reaches more than 400 ℃, the long-term use temperature ranges from-200 ℃ to 300 ℃, part of the alloy has no obvious melting point, and the alloy has high insulating property. Polyimide is used as a special engineering material and has been widely used in the fields of aviation, aerospace, microelectronics, nanometer, liquid crystal, separation membrane, laser and the like.

The type of the polyimide is a polycondensation type and an polyaddition type, polyimide has a variety of types and forms, and has various ways in synthesis, so the polyimide can be selected according to various application purposes, and the flexibility in synthesis is difficult to be possessed by other polymers. Polyimide is synthesized by dianhydride and diamine, and compared with other heterocyclic polymers, such as polybenzimidazole, polybenzothiazole, polyquinoline and other monomers, the polyimide has wide raw material sources and is easy to synthesize. The variety of dianhydride and diamine is various, and polyimide with different performances can be obtained by different combinations. Polyimide can be prepared by low-temperature polycondensation of dianhydride and diamine in polar solvent such as DMF, DMAC, NMP or THE/methanol mixed solvent to obtain soluble polyamic acid, and heating to 300 deg.C for dehydration to form ring to obtain polyimide; acetic anhydride and tertiary amine catalysts can also be added into polyamide acid to carry out chemical dehydration cyclization, thus obtaining polyimide solution and powder. The diamines and dianhydrides can also be polycondensed by heating in a high boiling point solvent, such as a phenolic solvent, to give polyimides in one step. In addition, polyimide can be obtained by the reaction of dibasic ester of tetrabasic acid and diamine; it is also possible to convert the polyamic acid into a polyisoimide and then into a polyimide. These processes all offer convenience in processing, the former known as the PMR process, the ability to obtain low viscosity, high solids solutions, and a window of low melt viscosity during processing, particularly for the manufacture of composites; the latter increases the solubility and does not give off low molecular compounds during the conversion.

When polyimide is synthesized, chemical solutions added into the reaction device can react with each other under different temperature conditions, and when the polyimide is reacted, the solutions in the reaction device can be partially volatilized to the outside of the reaction device, so that the surrounding environment is influenced to a certain extent, the working environment of workers is influenced, and therefore, the volatilized gas in the reaction device needs to be controlled.

Meanwhile, the application also discloses and contrasts a polyimide powder generating device, and the device has the authority of publication (bulletin) number: CN217527443U, in which the output end of the driving motor extends into the cylinder, if the temperature during polyimide synthesis is higher (e.g. 100 ℃ or even higher 200 ℃), the heat will be transferred to the main body of the driving motor through the output shaft of the driving motor, so that the temperature of the driving motor is too high, thereby affecting the normal operation of the driving motor. There is therefore a need for certain improvements in this device.

Disclosure of Invention

The utility model aims to solve the technical problems that: when polyimide powder is synthesized, part of solution in the reaction device volatilizes to the outside of the reaction device, so that certain influence is caused on the surrounding environment, and meanwhile, a driving motor in the reaction device is easy to be influenced by the temperature during the synthesis of the polyimide powder by reaction.

In order to solve the above technical problems, the present utility model provides a polyimide powder generating apparatus, comprising: the heating heat preservation cylinder body, heating heat preservation cylinder body top and bottom are fixed with charge port and bin outlet respectively, heating heat preservation cylinder body inside rotates installs the stock, install the stirring leaf on the stock, the coaxial fixed mounting in stock top has a conical gear, heating heat preservation cylinder body top fixed mounting has the agitator motor, the coaxial fixed mounting of agitator motor output shaft has a second conical gear, the meshing of second conical gear sets up the one end at conical gear; the filtering part is positioned at one side of the heating and heat-preserving cylinder body and comprises a filtering material box and an air pump fixed on the filtering material box, and the filtering part is used for filtering gas; and the gas inflow adjusting part is positioned at the top of the heating insulation cylinder body and used for balancing the air pressure in the heating insulation cylinder body.

Further, filter media is filled in the filter media box, the air pump is fixed on the filter media box, the air pump is fixedly provided with an air extraction pipe and an air injection pipe, one end of the air extraction pipe is fixed at the top of the heating and heat-preserving cylinder body and is communicated with the inside of the heating and heat-preserving cylinder body, one end of the air injection pipe is fixedly provided with an air injection cavity, and one end of the air injection cavity is fixed at one side of the filter media box.

Further, a partition plate is fixed in the gas injection cavity and is used for dividing flowing gas.

Further, the gas inflow adjusting part comprises a pipe body fixed at the top of the heating heat-preserving cylinder body, the bottom end of the pipe body is communicated with the inside of the heating heat-preserving cylinder body, a fixed rod and a separation plate are fixed in the pipe body, a movable rod is arranged on the fixed rod in a penetrating mode, one end of the movable rod extends to the lower portion of the separation plate and is fixed with a sealing plate, the sealing plate is attached to the separation plate, and a spring is sleeved at the top end of the movable rod.

Further, in the initial state, the spring is in a half-compressed state.

Further, one side of heating heat preservation cylinder body is provided with cooling portion, cooling portion is including fixing the heat exchange oil tank at heating heat preservation cylinder body top and the batch oil tank that is located heating heat preservation cylinder body one side, cooling portion is used for cooling conical gear and two conical gears, the inside cooling oil that all fills of heat exchange oil tank and batch oil tank, the one end of stock and agitator motor's output is rotated and is installed on the heat exchange oil tank lateral wall, be fixed with oil filler pipe and oil return pipe on the heat exchange oil tank, oil filler pipe's one end extends to the batch oil tank inside to be fixed with the oil pump, one side of batch oil tank is fixed with the connecting pipe, be fixed with the cold row of heat dissipation jointly between the one end of oil return pipe and the one end of connecting pipe.

Further, the bottom end of the inner cavity of the heating heat-preserving cylinder body is conical, and the outer sides of the stirring blades are attached to the inner wall of the heating heat-preserving cylinder body.

The device has the beneficial effects that the filtering part and the gas inflow regulating part are arranged in the device, the air pump can continuously suck the gas in the heating and heat-preserving cylinder body into the filter material box for filtering through the air suction pipe, the air injection pipe and the air injection cavity, and meanwhile, when the air pressure is reduced after the gas in the heating and heat-preserving cylinder body is sucked away, the external gas can push the sealing plate away from the separating plate, so that the air pressure in the heating and heat-preserving cylinder body reaches balance, the air pump can smoothly suck the gas in the heating and heat-preserving cylinder body smoothly, the linkage operation is realized, the gas in the heating and heat-preserving cylinder body is filtered, and the influence caused by overflow is avoided;

the cooling part is arranged in the device, the oil pump can continuously inject cooling oil in the oil storage tank into the heat exchange oil tank through the oil injection pipe, continuously cool the first conical gear, the second conical gear and the output shaft of the stirring motor, so that the phenomenon that the working of the stirring motor is influenced due to overhigh temperature is avoided, and meanwhile, the cooling oil flows back to the heat dissipation cold drain through the oil return pipe to cool, so that the stability of the device is improved.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic perspective view of the main body of the device of the present utility model;

FIG. 2 is a front cross-sectional view of the device body of the present utility model;

FIG. 3 is a front cross-sectional structural view of the heating and thermal insulation cylinder of the present utility model;

FIG. 4 is a schematic view of the structure of the filtering portion of the present utility model;

FIG. 5 is a perspective exploded view of the gas injection cavity and divider plate of the present utility model;

FIG. 6 is a front cross-sectional view of the gas inflow adjustment section of the present utility model;

FIG. 7 is a perspective exploded view of the gas inflow adjustment section of the present utility model;

FIG. 8 is a front cross-sectional view of the heat exchange fuel tank of the present utility model;

FIG. 9 is a front cross-sectional view of the oil reservoir of the present utility model;

in the figure:

1. heating the heat-preserving cylinder body; 2. a charging port; 3. a discharge port; 4. a long rod; 5. stirring the leaves; 6. a first bevel gear; 7. a stirring motor; 8. a secondary bevel gear;

9. a filtering part; 91. a filter material box; 92. an air extracting pump; 93. an exhaust pipe; 94. an air injection pipe; 95. a gas injection cavity; 951. a partition plate;

10. a gas inflow adjustment section; 101. a tube body; 102. a fixed rod; 103. a partition plate; 104. a movable rod; 105. a sealing plate; 106. a spring;

11. a cooling part; 111. a heat exchange oil tank; 112. a filler pipe; 113. an oil return pipe; 114. an oil storage tank; 115. an oil pump; 116. a connecting pipe; 117. and (5) radiating cold rows.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. On the contrary, the embodiments of the utility model include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

As shown in fig. 1 to 9, the present utility model provides a polyimide powder generating apparatus comprising: the heating and heat-preserving cylinder body 1, wherein a charging port 2 and a discharging port 3 are respectively fixed at the top and the bottom of the heating and heat-preserving cylinder body 1, a long rod 4 is rotatably arranged in the heating and heat-preserving cylinder body 1, a stirring blade 5 is arranged on the long rod 4, a first conical gear 6 is coaxially and fixedly arranged at the top end of the long rod 4, a stirring motor 7 is fixedly arranged at the top of the heating and heat-preserving cylinder body 1, a second conical gear 8 is coaxially and fixedly arranged on an output shaft of the stirring motor 7, and the second conical gear 8 is meshed with one end of the first conical gear 6; a filtering part 9, the filtering part 9 is positioned at one side of the heating and heat preserving cylinder 1, the filtering part 9 comprises a filter material box 91 and an air pump 92 fixed on the filter material box 91, and the filtering part 9 is used for filtering gas; the gas inflow adjusting part 10, the gas inflow adjusting part 10 is positioned at the top of the heating and heat preserving cylinder 1 and is used for balancing the air pressure in the heating and heat preserving cylinder 1.

Above-mentioned, can add the raw materials that the reaction needs to heating heat preservation cylinder body 1 inside through charging hole 2, agitator motor 7 can be through two conical gear 8, conical gear 6, stock 4, stirring leaf 5 continuously stir heating heat preservation cylinder body 1 inside, promote the inside polyimide's of heating heat preservation cylinder body 1 reaction, the bin outlet 3 can be opened, the inside reaction in-process of heating heat preservation cylinder body 1 takes a sample, opens bin outlet 3 simultaneously and can discharge the inside reaction product polyimide of heating heat preservation cylinder body 1.

The filter medium box 91 is filled with filter medium, the aspiration pump 92 is fixed on the filter medium box 91, the aspiration pump 92 is fixed with aspiration tube 93 and gas injection tube 94, one end of aspiration tube 93 is fixed at the top of heating insulation cylinder 1 and is communicated with the inside of heating insulation cylinder 1, one end of gas injection tube 94 is fixed with gas injection cavity 95, and one end of gas injection cavity 95 is fixed at one side of filter medium box 91.

Above-mentioned, filter medium activated carbon, quick lime etc. are filled to filter medium case 91 inside, can change other filter medium such as photocatalyst etc. if necessary, and aspiration pump 92 can filter the inside gas continuous suction of heating insulation cylinder 1 to filter medium case 91 inside through aspiration tube 93, gas injection tube 94, gas injection cavity 95, avoids heating insulation cylinder 1 inside gas to spill over, causes the influence to the surrounding environment.

A partition plate 951 is fixed inside the gas injection cavity 95, and the partition plate 951 is used for dividing the flowing gas.

Above-mentioned, gas is discharged into the inside in-process of gas injection cavity 95 through gas injection pipe 94, can cut apart gas for the gas after cutting apart can be even enter into inside the filter media case 91, makes the gas that inputs into inside the filter media case 91 can be even contact with the filter media that the filter media case 91 is inside to be filled, improves filterable effect.

The gas inflow adjusting part 10 comprises a pipe body 101 fixed at the top of the heating and heat-preserving cylinder body 1, the bottom end of the pipe body 101 is communicated with the inside of the heating and heat-preserving cylinder body 1, a fixed rod 102 and a separation plate 103 are fixed in the pipe body 101, a movable rod 104 is arranged on the fixed rod 102 in a penetrating manner, one end of the movable rod 104 extends to the lower portion of the separation plate 103 and is fixed with a sealing plate 105, the sealing plate 105 is attached to the separation plate 103, and a spring 106 is sleeved at the top end of the movable rod 104.

Above-mentioned, when closing plate 105 laminating sets up on division board 103, can seal up body 101 for heating heat preservation cylinder body 1 is isolated with the outside, when aspiration pump 92 is to the inside gas that draws of heating heat preservation cylinder body 1, when the inside gas of heating heat preservation cylinder body 1 is reduced by the back atmospheric pressure that is absorbed, outside gas can push away closing plate 105 from division board 103, make the inside atmospheric pressure of heating heat preservation cylinder body 1 reach the equilibrium, make aspiration pump 92 can be smooth with the inside gas smooth evacuation of heating heat preservation cylinder body 1, realize the linkage operation, make the inside gas of heating heat preservation cylinder body 1 filtered, avoid spilling over the outside and cause the influence.

In the initial state, the spring 106 is in a semi-compressed state.

The spring 106 pulls the sealing plate 105 upward through the movable rod 104, so that the sealing plate 105 has a tendency to move upward, so that the sealing plate 105 can stably seal the isolation plate 103, and meanwhile, the spring 106 in a semi-compressed state can be compressed again for a part, that is, when the air pressure in the heating insulation cylinder 1 is reduced, the outside air can push the sealing plate 105 away from the isolation plate 103, and the spring 106 can be compressed again for a part.

One side of the heating heat preservation cylinder body 1 is provided with a cooling part 11, the cooling part 11 comprises a heat exchange oil tank 111 fixed at the top of the heating heat preservation cylinder body 1 and an oil storage tank 114 positioned at one side of the heating heat preservation cylinder body 1, the cooling part 11 is used for cooling a first conical gear 6 and a second conical gear 8, cooling oil is filled in the heat exchange oil tank 111 and the oil storage tank 114, one end of a long rod 4 and the output end of a stirring motor 7 are rotatably mounted on the side wall of the heat exchange oil tank 111, an oil injection pipe 112 and an oil return pipe 113 are fixed on the heat exchange oil tank 111, one end of the oil injection pipe 112 extends to the inside of the oil storage tank 114 and is fixedly provided with an oil pump 115, a connecting pipe 116 is fixed on one side of the oil storage tank 114, and a heat dissipation cold row 117 is jointly fixed between one end of the oil return pipe 113 and one end of the connecting pipe 116.

Above-mentioned, the inside cooling oil that has low kinematic viscosity such as transformer oil that has been filled to cooling oil in heat exchange oil tank 111 and oil storage tank 114, specific oil's model does not prescribe, when the inside temperature that reacts of heating insulation cylinder 1 is higher, the inside heat of heating insulation cylinder 1 can be transmitted to on the first conical gear 6 through stock 4, make the output shaft temperature of first conical gear 6, second conical gear 8 and agitator motor 7 rise, start oil pump 115 work, oil pump 115 can be with the inside cooling oil of oil storage tank 114 through the continuous injection of filler pipe 112 to the inside of heat exchange oil tank 111, carry out continuous cooling to first conical gear 6 and second conical gear 8, and agitator motor 7's output shaft, avoid agitator motor 7 high temperature to influence its work, the cooling oil is cooled down through the inside heat dissipation cold row 117 that returns through oil return pipe 113, make the stability of device improve simultaneously. When the cooling oil flows into the heat-dissipating cold row 117, the contact area between the heat-dissipating cold row 117 and the air is large, so that the heat exchange between the cooling oil and the air is quickened, the flowing cooling oil is cooled, and if necessary, a fan can be used for blowing the heat-dissipating cold row 117, so that the heat exchange between the air and the heat-dissipating cold row 117 is quickened, and the cooling of the cooling oil is quickened.

The bottom end of the inner cavity of the heating heat-preserving cylinder body 1 is conical, and the outer sides of the stirring blades 5 are attached to the inner wall of the heating heat-preserving cylinder body 1.

Above-mentioned, stirring leaf 5 can strike off the raw materials on the heating heat preservation cylinder body 1 inner wall, avoids the raw materials to remain on the heating heat preservation cylinder body 1 inner wall, and heating heat preservation cylinder body 1 inner chamber bottom is the toper, and the polyimide that makes things convenient for raw materials and reaction to produce is in the accumulation of heating heat preservation cylinder body 1 diapire, conveniently discharges through bin outlet 3.

Notably, the outer wall of the heating and heat-preserving cylinder 1 is provided with a heat-preserving layer, so that heat in the heating and heat-preserving cylinder 1 is not directly transferred to the stirring motor 7 and the heat exchange oil tank 111 through the outer wall.

The polyimide is synthesized in various ways, the application is not limited, and therefore, raw materials are not limited, the utility model only provides a device for synthesizing polyimide, the polyimide needs to be subjected to temperature control and drying after the reaction inside the heating and heat preserving cylinder body 1 is generated, the heating isothermal control is determined by the selected synthesis way, and the polyimide is well known to the person in the technical field, and the device is not described in detail;

meanwhile, the heating wire is arranged inside the heating heat-preserving cylinder body 1, the heating technology is the existing mature technology, the application is not excessively repeated, meanwhile, polyimide is required to be subjected to temperature control during synthesis reaction, and the stirring motor 7, the air pump 92, the oil pump 115 are required to be subjected to circuit connection, switch control and other circuit wire connection, so that the heating heat-preserving cylinder body 1 is well known in the technical field, the use is not repeated, the stirring motor 7 is of a YCT200-4B type, the oil pump 115 is of an H11397 type, the air pump 92 is of a G4RB 620 type, the electric appliance model update iteration is faster, and the stirring motor 7, the air pump 92 and the oil pump 115 can be replaced if necessary, so that the heating heat-preserving cylinder body is not limited.

The above-described preferred embodiments according to the present utility model are intended to suggest that, in view of the above description, various changes and modifications may be made by the worker in question without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (7)

1. A polyimide powder generating apparatus comprising:

the heating heat preservation cylinder body (1), heating heat preservation cylinder body (1) top and bottom are fixed with charging hole (2) and bin outlet (3) respectively, heating heat preservation cylinder body (1) inside rotates installs stock (4), install stirring leaf (5) on stock (4), coaxial fixed mounting in stock (4) top has conical gear (6) No. one, heating heat preservation cylinder body (1) top fixed mounting has agitator motor (7), coaxial fixed mounting of agitator motor (7) output shaft has two conical gears (8), two conical gears (8) meshing set up the one end in conical gear (6) No. one;

the filtering part (9) is positioned on one side of the heating and heat-preserving cylinder body (1), the filtering part (9) comprises a filtering material box (91) and an air extracting pump (92) fixed on the filtering material box (91), and the filtering part (9) is used for filtering gas;

the gas inflow adjusting part (10), the gas inflow adjusting part (10) is positioned at the top of the heating and heat preserving cylinder body (1) and is used for balancing the air pressure in the heating and heat preserving cylinder body (1).

2. A polyimide powder producing apparatus according to claim 1, wherein,

the filter medium box (91) is internally filled with filter medium, the air pump (92) is fixed on the filter medium box (91), an air extraction pipe (93) and an air injection pipe (94) are fixed on the air pump (92), one end of the air extraction pipe (93) is fixed at the top of the heating heat preservation cylinder body (1) and is communicated with the inside of the heating heat preservation cylinder body (1), one end of the air injection pipe (94) is fixed with an air injection cavity (95), and one end of the air injection cavity (95) is fixed at one side of the filter medium box (91).

3. A polyimide powder producing apparatus according to claim 2, wherein,

a partition plate (951) is fixed inside the gas injection cavity (95), and the partition plate (951) is used for dividing flowing gas.

4. A polyimide powder producing apparatus according to claim 1, wherein,

the utility model provides a gas inflow regulation portion (10) is including fixing body (101) at heating heat preservation cylinder body (1) top, body (101) bottom and the inside intercommunication of heating heat preservation cylinder body (1), body (101) inside is fixed with dead lever (102) and division board (103), run through on dead lever (102) and be provided with movable rod (104), the one end of movable rod (104) extends to division board (103) below to be fixed with closing plate (105), closing plate (105) laminating sets up on division board (103), movable rod (104) top cover is equipped with spring (106).

5. A polyimide powder producing apparatus according to claim 4, wherein,

in an initial state, the spring (106) is in a semi-compressed state.

6. A polyimide powder producing apparatus according to claim 1, wherein,

one side of heating heat preservation cylinder body (1) is provided with cooling portion (11), cooling portion (11) are including fixing heat exchange oil tank (111) at heating heat preservation cylinder body (1) top and being located oil storage tank (114) of heating heat preservation cylinder body (1) one side, cooling portion (11) are used for cooling conical gear (6) and two conical gear (8), cooling oil is all filled to inside heat exchange oil tank (111) and oil storage tank (114), the one end of stock pole (4) and the output rotation of agitator motor (7) are installed on heat exchange oil tank (111) lateral wall, be fixed with oil filler pipe (112) and oil return pipe (113) on heat exchange oil tank (111), oil filler pipe (112) one end extends to oil storage tank (114) inside to be fixed with oil pump (115), one side of oil storage tank (114) is fixed with connecting pipe (116), jointly be fixed with between the one end of oil return pipe (113) and the one end of connecting pipe (116) and cold row (117).

7. A polyimide powder producing apparatus according to claim 1, wherein,

the bottom end of the inner cavity of the heating heat-preserving cylinder body (1) is conical, and the outer sides of the stirring blades (5) are attached to the inner wall of the heating heat-preserving cylinder body (1).