Heat preservation and shaping device for melt injection of chemical slurry

Abstract

The utility model provides a heat preservation and shaping device for melt injection of chemical slurry, and relates to the technical field of melt injection molding. The heat-preservation shaping device comprises a shaping mold, a first heat-preservation mechanism, a second heat-preservation mechanism and a steam generator, slurry formed by melting energetic materials is injected into the shaping mold, the first heat-preservation mechanism is arranged around the shaping mold, the second heat-preservation mechanism is arranged at the top of the shaping mold, and the steam generator is communicated with the first heat-preservation mechanism and the second heat-preservation mechanism; wherein after steam is introduced into the first heat preservation mechanism and the second heat preservation mechanism through the steam generator to conduct heat preservation treatment on the medicine slurry in the shaping mold, the steam generator is controlled to be opened or closed, so that the medicine slurry in the shaping mold is gradually cooled from bottom to top till the medicine slurry is shaped. According to the utility model, the temperature change in the shaping process is slow, cracks and air holes are reduced, the production cost is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of melt-injection molding, in particular to a heat-insulating and shaping device for melt-injection slurry. Background Art

[0002] During the production of melt-cast energetic materials, it has been discovered that these materials, with their poor elasticity and brittleness, are susceptible to cracking and brittle fractures during production, transportation, and storage due to mechanical and thermal stresses, posing significant safety risks. These brittle energetic materials are significantly affected by temperature, making them prone to cracking and shrinkage. Furthermore, these materials are relatively expensive and have a long procurement cycle.

[0003] Currently, there are two main technical approaches to addressing crack defects in brittle energetic materials. One is to improve the defects caused by solidifying energetic materials by adding other materials to the formula to increase the tensile strength of the energetic material itself or reduce the elastic modulus of the energetic material. The other is to use process technology to reduce product production porosity defects and increase product production density, thereby improving the strength of the grain. However, in actual production applications, it has been found that neither of the above methods has been able to stably resolve the internal quality defects of the product. Therefore, it is urgent to develop a heat preservation and shaping device for melt-injected slurry. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a heat preservation and shaping device for molten slurry, comprising:

[0005] A shaping mold into which the molten energetic material slurry is injected;

[0006] A first heat preservation mechanism is arranged around the shaping mold;

[0007] The second heat preservation mechanism is arranged on the top of the shaping mold;

[0008] a steam generator connected to the first heat preservation mechanism and the second heat preservation mechanism;

[0009] Among them, steam is introduced into the first insulation mechanism and the second insulation mechanism through the steam generator to insulate the slurry in the shaping mold, and then the steam generator is controlled to open or close so that the slurry in the shaping mold is gradually cooled from bottom to top until the slurry is shaped.

[0010] Preferably, the first heat preservation mechanism includes:

[0011] Positioning ring, the shaping mold is placed in the positioning ring;

[0012] The first shell is arranged around the upper half of the shaping mold, and the first shell includes a first heat-insulating space, and steam is input into the first heat-insulating space to heat the slurry in the upper half of the shaping mold;

[0013] A plurality of connecting columns are provided, and the positioning ring and the first shell are connected via the connecting columns.

[0014] Preferably, the second heat preservation mechanism includes:

[0015] The second shell is arranged on the top of the shaping mold and includes a second heat-insulating space. Steam is input into the second heat-insulating space to heat-insulate the slurry in the top of the shaping mold.

[0016] Preferably, the first housing further includes:

[0017] a first air inlet nozzle, the first air inlet nozzle being connected to the steam generator to introduce steam into the first heat preservation space;

[0018] The first air outlet nozzle is connected to the air guide pipe to guide the steam out of the first heat preservation space.

[0019] Preferably, the second housing further includes:

[0020] a second air inlet nozzle, the second air inlet nozzle being connected to the steam generator to introduce steam into the second heat preservation space;

[0021] The second air outlet nozzle is connected to the air guide pipe to guide the steam out of the second heat preservation space.

[0022] Preferably, the horizontal position of the first air inlet nozzle is lower than that of the first air outlet nozzle.

[0023] Preferably, the above-mentioned heat preservation and shaping device further comprises:

[0024] The bracket and the shaping mold are placed on the bracket, and the bubbles in the slurry are removed by vibrating the bracket.

[0025] Preferably, the above-mentioned bracket includes:

[0026] base plate;

[0027] Support plate, the shaping mold is detachably placed on the support plate;

[0028] Multiple support columns, the base plate and the support plate are connected by the support columns.

[0029] Preferably, the above-mentioned bracket further comprises:

[0030] Multiple fixing rings, multiple support columns are connected by fixing rings.

[0031] Preferably, the above-mentioned bracket further comprises:

[0032] The cover plate is arranged above the second shell, a positioning hole is opened on the cover plate, the second shell part passes through the positioning hole, and the cover plate and the support plate are connected by multiple pull rods.

[0033] The beneficial effects of the utility model are:

[0034] The temperature change in the shaping process is slowed down, the generation of cracks and pores is reduced, and production costs are saved and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of an embodiment of the present utility model;

[0037] Figure 2 This is a schematic diagram of another embodiment of the present invention.

[0038] Wherein, the accompanying drawings are marked as follows:

[0039] Forming mold 1; first heat preservation mechanism 2; second heat preservation mechanism 3; bracket 4;

[0040] Positioning ring 21; first housing 21; connecting column 23; first air inlet nozzle 24; first air outlet nozzle 25;

[0041] Second housing 31; second air inlet nozzle 32; second air outlet nozzle 33;

[0042] Base plate 41; support plate 42; support column 43; fixing ring 44; cover plate 45; pull rod 46. DETAILED DESCRIPTION

[0043] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0044] The exemplary embodiments and descriptions of the present invention are intended to explain the present invention, but are not intended to limit the present invention. In addition, elements / components with the same or similar reference numerals in the drawings and embodiments are intended to represent the same or similar parts.

[0045] The terms "first", "second", "S1", "S2", etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present invention. They are only used to distinguish elements or operations described with the same technical terms.

[0046] The directional terms used herein, such as up, down, left, right, front, or back, are only used to refer to the directions in the accompanying drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention.

[0047] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0048] As used herein, "and / or" includes any or all combinations of the items mentioned.

[0049] Regarding "plurality" in this document, "plurality" includes "two" and "more than two"; regarding "plurality groups" in this document, "plurality groups" includes "two groups" and "more than two groups".

[0050] Certain terms used to describe the present application are discussed below, or elsewhere in this specification, to provide additional guidance to those skilled in the art regarding the description of the present application.

[0051] Please refer to Figures 1 to 2 , Figure 1 This is a schematic diagram of an embodiment of the present invention. Figure 2 FIG. 1 is a schematic diagram of another embodiment of the present invention. Figures 1 to 2 As shown, the utility model provides a heat-insulating and shaping device for molten slurry, comprising: a shaping mold, a first heat-insulating mechanism, a second heat-insulating mechanism and a steam generator, the shaping mold is injected with slurry after the energy-containing material is melted, the first heat-insulating mechanism is arranged around the shaping mold, the second heat-insulating mechanism is arranged on the top of the shaping mold, and the steam generator is connected to the first heat-insulating mechanism and the second heat-insulating mechanism; wherein, steam is introduced into the first heat-insulating mechanism and the second heat-insulating mechanism through the steam generator to insulate the slurry in the shaping mold, and then the steam generator is controlled to open or close so that the slurry in the shaping mold is gradually cooled from bottom to top until the slurry is shaped.

[0052] Further, please refer to Figures 1 to 2The first heat-insulating mechanism comprises a positioning ring, a first shell, and a plurality of connecting posts. The sizing mold is placed within the positioning ring. The first shell surrounds the upper portion of the sizing mold and includes a first heat-insulating space. Steam is introduced into the first heat-insulating space to insulate the slurry in the upper portion of the sizing mold. The positioning ring and the first shell are connected by connecting posts.

[0053] Further, please refer to Figures 1 to 2 The above-mentioned second insulation mechanism includes: a second shell, the second shell is arranged on the top of the shaping mold, the second shell includes a second insulation space, and steam is input into the second insulation space to insulate the slurry in the top of the shaping mold.

[0054] Further, please refer to Figures 1 to 2 The above-mentioned first shell also includes: a first air inlet nozzle and a first air outlet nozzle, the first air inlet nozzle is connected to the steam generator to introduce steam into the first insulation space, and the first air outlet nozzle is connected to the air duct to guide the steam out of the first insulation space.

[0055] Wherein, the horizontal position of the above-mentioned first air inlet nozzle is lower than the first air outlet nozzle.

[0056] Further, please refer to Figures 1 to 2 The above-mentioned second shell also includes: a second air inlet nozzle and a second air outlet nozzle, the second air inlet nozzle is connected to the steam generator to introduce steam into the second insulation space, and the second air outlet nozzle is connected to the air duct to guide the steam out of the second insulation space.

[0057] Further, please refer to Figures 1 to 2 The above-mentioned heat preservation and shaping device also includes: a bracket, the shaping mold is placed on the bracket, and the bubbles in the slurry are eliminated by vibrating the bracket.

[0058] Further, please refer to Figures 1 to 2 The above-mentioned bracket includes: a base plate, a support plate and a plurality of support columns. The shaping mold is detachably placed on the support plate, and the base plate and the support plate are connected by the support columns.

[0059] Further, please refer to Figures 1 to 2 The above-mentioned bracket also includes: multiple fixing rings, and the multiple support columns are connected by fixing rings.

[0060] Further, please refer to Figures 1 to 2 The above-mentioned bracket also includes: a cover plate, which is arranged above the second shell, and a positioning hole is opened on the cover plate. The second shell part passes through the positioning hole. The cover plate and the support plate are connected by multiple pull rods.

[0061] Specifically, in an embodiment of the present invention, a shaping mold is placed on a support plate, a first heat-insulating mechanism is sleeved around the outer periphery of the shaping mold, and a second heat-insulating mechanism is arranged on the top of the shaping mold. A cover plate with positioning holes is then provided on the second heat-insulating mechanism, the second heat-insulating mechanism partially passes through the cover plate, and the cover plate is connected to the support plate by multiple tie rods. The entire heat-insulating shaping device is then placed on a vibration platform (not shown in the figure). In this embodiment, a plurality of positioning holes are provided on the cover plate, which can accommodate multiple shaping molds for simultaneous processing. A steam generator (not shown in the figure) is connected and sealed to the first air inlet nozzle and the second air inlet nozzle, and the first air outlet nozzle and the second air outlet nozzle are connected and sealed to the conduit. The steam generator is turned on to introduce steam, and the steam temperature is not less than 100°C, so that a hot steam circulation is formed in the first heat-insulating space and the second heat-insulating space, and the first heat-insulating mechanism and the second heat-insulating mechanism are in a high-temperature state. Ensure that all the condensed water in the shaping mold is drained out, and then load the slurry into the shaping mold. Vibrate while adding the slurry, with a vibration frequency of (26±2) Hz and an amplitude of (0.8±0.3) mm, to expel the gas in the slurry. When the slurry is filled to about 20 mm from the mouth of the shaping mold, stop adding the slurry, and continue vibrating for (2±1) minutes before stopping. Cover the first and second heat preservation mechanisms with quilts, and continue to pass steam for 1.5 hours, with the temperature not lower than 100°C. After 1.5 hours, stop passing steam into the first heat preservation mechanism, and continue to pass steam into the second heat preservation mechanism for 1.5 hours. Turn off the steam generator after 1.5 hours and let it cool naturally until it is no longer hot. Compared with the normal temperature production environment, the use of this utility model can promote product production to solidify from bottom to top, so as to achieve the purpose of gradual cooling and ensure product production quality.

[0062] In summary, the beneficial effects of the present invention are: slowing down the temperature change during the shaping process, reducing the generation of cracks and pores, saving production costs, and improving production efficiency.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A heat preservation and shaping device for molten slurry, characterized in that: include: A shaping mold into which the molten energetic material slurry is injected; A first heat-insulating mechanism is arranged around the shaping mold; A second heat preservation mechanism is provided on the top of the shaping mold; a steam generator connected to the first heat preservation mechanism and the second heat preservation mechanism; Among them, after steam is introduced into the first insulation mechanism and the second insulation mechanism through the steam generator to insulate the slurry in the shaping mold, the slurry in the shaping mold is gradually cooled from bottom to top by controlling the opening or closing of the steam generator until the slurry is shaped.

2. The heat preservation and shaping device according to claim 1, characterized in that: The first heat preservation mechanism includes: A positioning ring, in which the shaping die is placed; a first shell, disposed around the upper half of the shaping mold, the first shell comprising a first heat-insulating space, and the slurry in the upper half of the shaping mold is heat-insulated by inputting steam into the first heat-insulating space; A plurality of connecting columns are provided, and the positioning ring and the first shell are connected via the connecting columns.

3. The heat preservation and shaping device according to claim 2, characterized in that: The second heat preservation mechanism includes: The second shell is arranged on the top of the shaping mold, and the second shell includes a second heat-insulating space. The steam is input into the second heat-insulating space to heat-insulate the slurry in the top of the shaping mold.

4. The heat-insulating and shaping device according to claim 3, characterized in that: The first housing further includes: a first air inlet nozzle, connected to the steam generator to introduce the steam into the first heat-insulating space; A first air outlet nozzle is connected to the air guide pipe to guide the steam out of the first heat-insulating space.

5. The heat-insulating and shaping device according to claim 4, characterized in that: The second housing further includes: a second air inlet nozzle, the second air inlet nozzle being connected to the steam generator to introduce the steam into the second heat-insulating space; A second air outlet nozzle is connected to the air guide pipe to guide the steam out of the second heat preservation space.

6. The heat-insulating and shaping device according to claim 5, characterized in that: The first air inlet nozzle is located at a lower level than the first air outlet nozzle.

7. The heat-insulating and shaping device according to claim 6, characterized in that: Also includes: The support is provided with the shaping mold, and the air bubbles in the medicine slurry are eliminated by vibrating the support.

8. The heat-insulating and shaping device according to claim 7, characterized in that: The bracket comprises: base plate; A support plate, on which the shaping mold is detachably placed; A plurality of support columns are provided, and the base plate and the support plate are connected by the support columns.

9. The heat-insulating and shaping device according to claim 8, characterized in that: The bracket further comprises: A plurality of fixing rings are provided, and the plurality of support columns are connected by the fixing rings.

10. The heat-insulating and shaping device according to claim 9, characterized in that: The bracket further comprises: A cover plate is provided above the second shell, a positioning hole is provided on the cover plate, and the second shell partially passes through the positioning hole, and the cover plate is connected to the support plate by a plurality of pull rods.

Images