Granularity control mechanism for preparing aluminum hydride

Abstract

The utility model relates to the technical field of aluminum hydride production, and discloses a granularity control mechanism for aluminum hydride preparation, which comprises a base, the top end of the base is fixedly connected with a mounting plate, the inside of the mounting plate is fixedly connected with a driving device, the driving end of the driving device is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with a rotating shaft. A dismounting and mounting mechanism is arranged in the rotating shaft, a screening chamber is fixedly connected to the top end of the mounting plate, and a material distributing mechanism is arranged in the screening chamber; the dismounting and mounting mechanism comprises a screening plate, the inner wall of the screening chamber is fixedly connected with a protruding block, the rear end of the screening plate is connected to the outer portion of the protruding block in a clamped mode, and an opening is formed in a rotating shaft. According to the utility model, the sieve plate is simple, convenient and rapid to replace and convenient to maintain or replace sieve plates with different pore diameters according to requirements, so that the adaptability of the whole equipment is improved, and the service life of the whole equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to trihydrogen aluminum production technical field especially relates to a particle size control mechanism for trihydrogen aluminum preparation. BACKGROUND

[0002] Trihydrogen aluminum (AlH3) is an inorganic compound, also known as aluminum hydride. It is a white crystal with a high melting point (110℃) and a boiling point (150℃, decomposed). Trihydrogen aluminum is a strong reducing agent that can react with water to generate hydrogen gas and is easily oxidized in air. It is commonly used as a reducing agent in organic synthesis and is considered an ideal fuel for the next generation of solid propellants due to its high hydrogen content (10.08%) and relatively high thermal decomposition temperature.

[0003] There are four methods to prepare trihydrogen aluminum, such as reducing AlCl3 with LiAlH4, using LiAlH4 and LiBH4 as mixed catalysts in anhydrous ether and toluene solvents, etc. This method is simple, low pressure and low temperature, suitable for industrial production. The current commonly used preparation method in industry is the mixed catalyst method, which is economical and efficient, low in cost, single in crystal form, high in purity, stable and easy to store, which is beneficial to the application in energetic materials and other aspects.

[0004] However, in the prior art, the fixing method of the sieve plate in some trihydrogen aluminum preparation equipment is complex and lacks a convenient replacement mechanism. When it is necessary to replace the sieve plate with different pore sizes to meet different production needs or to maintain the sieve plate, the operator often needs to spend a lot of time and effort to disassemble and install the sieve plate. This not only increases the downtime of the equipment and reduces the production efficiency, so a particle size control mechanism for trihydrogen aluminum preparation is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a particle size control mechanism for trihydrogen aluminum preparation, aiming at improving the problem that the fixing method of the sieve plate in some trihydrogen aluminum preparation equipment in the prior art is complex and lacks a convenient replacement mechanism, which increases the time for disassembling and installing the sieve plate and reduces the production efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A particle size control mechanism for trihydrogen aluminum preparation, comprising a base, the top end of the base is fixedly connected with a mounting plate, the inside of the mounting plate is fixedly connected with a driving device, the driving end of the driving device is fixedly connected with a rotating shaft, the inside of the rotating shaft is provided with a dismounting mechanism, the top end of the mounting plate is fixedly connected with a screening chamber, the inside of the screening chamber is provided with a distributing mechanism;

[0008] The disassembly mechanism comprises a sieve plate, a protrusion fixedly connected to the inner wall of the screening chamber, the rear end of the sieve plate is engagedly connected to the outside of the protrusion, an opening is formed in the inside of the rotating shaft, a scraper is detachably connected to the inner wall of the opening, a positioning rod is fixedly connected to the bottom inner wall of the opening, a circular groove is formed in the inside of the rotating shaft on both left and right sides, springs are fixedly connected to the inner walls of the distal sides of the two circular grooves, ball head rods are fixedly connected to the proximal sides of the two springs, and a fixing assembly is arranged in the inside of the sieve plate for facilitating fixation.

[0009] As a further description of the above technical solution:

[0010] The material distribution mechanism comprises two discharge channels, one of which is fixedly connected to the left end of the screening chamber, and the other is fixedly connected to the right end top side of the screening chamber, a receiving groove is formed in the right side of the inside of the screening chamber, a gas cylinder is fixedly connected to the top inner wall of the receiving groove, an arc-shaped plate is fixedly connected to the driving end of the gas cylinder, and a reaction chamber is detachably connected to the top end of the screening chamber.

[0011] As a further description of the above technical solution:

[0012] The fixing assembly comprises a clamping block, a clamping groove is formed in the front side of the inside of the sieve plate, the outer wall of the clamping block is slidingly connected to the inner wall of the clamping groove, and a screw rod is rotatably connected to the front side of the inside of the clamping block.

[0013] As a further description of the above technical solution:

[0014] The outer thread of the screw rod is connected to the inside of the screening chamber, a rotating plate is fixedly connected to the front side of the screw rod, and the rear side of the rotating plate is in contact with the front side of the screening chamber.

[0015] As a further description of the above technical solution:

[0016] A positioning groove is formed in the inside of the scraper, and the outer wall of the positioning rod is in contact with the inner wall of the positioning groove.

[0017] As a further description of the above technical solution:

[0018] A square hole is formed in the inside of the scraper, the outer walls of the two ball head rods are engaged with the inner wall of the square hole, and the outer wall of the ball head rod is slidingly connected to the inner wall of the circular groove.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the arc-shaped plate is slidably connected to the inner wall of the accommodating groove, and the left and right sides of the screening chamber are provided with discharge ports, and the outer wall of the arc-shaped plate is slidably connected to the inner wall of the discharge port on the right side;

[0021] As a further description of the above technical solutions:

[0022] The outer wall of the sieve plate is in contact with the inner wall of the screening chamber, the bottom side of the scraper is slidably connected to the top side of the sieve plate, and the outer wall of the rotating shaft is rotatably connected to the inner wall of the sieve plate.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1、the utility model discloses when needing to replace the sieve plate of different aperture, first pull up the scraper, because the orientation of positioning rod to scraper, the vertical upward movement of scraper extrudes the ball head rod to move to both sides, and the limiting of scraper is removed, and the scraper can be detached.

[0025] 2、the utility model discloses the reaction chamber transports the trihydrogen aluminum of reaction generation to the screening chamber, and the driving device drives the rotation of rotating shaft, and the rotating shaft drives the rotation of scraper and scrapes the top side of sieve plate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A kind of trihydrogen aluminum preparation is proposed for the stereogram of particle size control mechanism of the utility model;

[0027] Figure 2 The structure diagram of screening chamber of a kind of particle size control mechanism for the utility model proposes trihydrogen aluminum preparation;

[0028] Figure 3 For Figure 2 The enlarged view of place A in Fig.

[0029] Figure 4 For Figure 2 The enlarged view of place B in Fig.

[0030] Figure 5The utility model provides a kind of rotating shaft structure diagram of particle size control mechanism for preparing trihydroaluminium.

[0031] Legend:

[0032] 1, base; 2, mounting plate; 3, screening chamber; 4, protruding block; 5, sieve plate; 6, rotating shaft; 7, opening; 8, positioning rod; 9, scraper; 10, spring; 11, ball head rod; 12, positioning groove; 13, square hole; 14, clamping groove; 15, clamping block; 16, screw rod; 17, rotating plate; 18, air cylinder; 19, arc plate; 20, blanking channel; 21, reaction chamber. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] Reference Figure 2 , Figure 3 and Figure 5 An embodiment provided by the utility model: a particle size control mechanism for preparing trihydroaluminium, which comprises a base 1, the top end of the base 1 is fixedly connected with a mounting plate 2, and the base 1 is the basic support structure of the entire particle size control mechanism for preparing trihydroaluminium. It provides a stable mounting platform for the mounting plate 2 and other components, ensures that the entire mechanism will not shake or displace during operation, and guarantees the stability of equipment operation. The inside of the mounting plate 2 is fixedly connected with a driving device, the driving end of the driving device is fixedly connected with a rotating shaft 6, the inside of the rotating shaft 6 is provided with a dismounting mechanism, the top end of the mounting plate 2 is fixedly connected with a screening chamber 3, and the inside of the screening chamber 3 is provided with a material distribution mechanism; the mounting plate 2 plays a role in connecting different components in the mechanism. The driving device fixedly connected inside it provides a power source for the entire particle size control process. Moreover, the top end of the mounting plate 2 is connected with the screening chamber 3, which transmits power to related components while providing stable support for the screening chamber 3, ensuring the normal progress of screening work.

[0035] The dismounting mechanism comprises a sieve plate 5, a protrusion 4 fixedly connected to the inner wall of the screening chamber 3, the rear end of the sieve plate 5 is engagedly connected to the outside of the protrusion 4, the outer wall of the sieve plate 5 is in contact with the inner wall of the screening chamber 3, and the outer wall of the rotating shaft 6 is rotatably connected to the inner wall of the sieve plate 5. The inner part of the rotating shaft 6 is provided with an opening 7, the inner wall of the opening 7 is detachably connected with a scraper 9, the bottom side of the scraper 9 is slidably connected to the top side of the sieve plate 5, the driving device drives the rotating shaft 6 to rotate, and then drives the scraper 9 to rotate, so that the scraper 9 can scrape the top side of the sieve plate 5, which is the power starting point for realizing the particle size screening of aluminum hydride. The rotating shaft 6 transmits the power of the driving device to drive the scraper 9 to rotate to scrape the material on the sieve plate 5. On the other hand, the inner part of the rotating shaft 6 is provided with a dismounting mechanism, which facilitates the dismounting and mounting of the scraper 9. The scraping of the scraper 9 can promote the movement of the material on the sieve plate 5, so that the material with qualified particle size can pass through the sieve plate 5 and be discharged. The bottom inner wall of the opening 7 is fixedly connected with a positioning rod 8, the inner part of the scraper 9 is provided with a positioning groove 12, and the outer wall of the positioning rod 8 is in contact with the inner wall of the positioning groove 12. The positioning rod 8 plays a guiding role during the up-and-down movement of the scraper 9, ensuring that the scraper 9 can move vertically upward or downward. The inner part of the rotating shaft 6 is provided with a circular groove on both sides, the inner wall of the far side of the two circular grooves is fixedly connected with a spring 10, the near side of the two springs 10 is fixedly connected with a ball head rod 11, the inner part of the scraper 9 is provided with a square hole 13, the outer wall of the two ball head rods 11 is engaged with the inner wall of the square hole 13, and the outer wall of the ball head rod 11 is slidably connected to the inner wall of the circular groove. The circular groove provides a space for accommodating and sliding the ball head rod 11. The spring 10 is connected between the inner wall of the circular groove and the ball head rod 11 to provide the ball head rod 11 with elastic force. Under normal conditions, the ball head rod 11 is engaged in the inner wall of the square hole 13 of the scraper 9 to play a limiting role, ensuring the fixation of the scraper 9 in the rotating shaft 6. When it is necessary to dismount the scraper 9, the ball head rod 11 can move to both sides under the action of external force.

[0036] The inner part of the sieve plate 5 is provided with a fixing assembly for facilitating fixation. The fixing assembly comprises a clamping block 15, the inner front side of the sieve plate 5 is provided with a clamping groove 14, the outer wall of the clamping block 15 is slidably connected to the inner wall of the clamping groove 14, and the inner front side of the clamping block 15 is rotatably connected with a screw rod 16. The outer part of the screw rod 16 is threadedly connected to the inner part of the screening chamber 3, the front side of the screw rod 16 is fixedly connected with a rotating plate 17, and the rear side of the rotating plate 17 is in contact with the front side of the screening chamber 3. The cooperation of the clamping groove 14 and the clamping block 15 plays a role in fixing the sieve plate 5, ensuring the stability of the sieve plate 5 in the screening chamber 3. When it is necessary to replace the sieve plate 5, the clamping relationship between the clamping block 15 and the clamping groove 14 can be released by operating the screw rod 16. The rotating plate 17 drives the screw rod 16 to rotate, and since the screw rod 16 is threadedly connected to the screening chamber 3, the forward and backward movement of the clamping block 15 can be realized, thereby fixing and releasing the clamping of the clamping groove 14 in the sieve plate 5.

[0037] Referring to Figure 1 ,Figure 2 and Figure 4 The material distribution mechanism includes two discharge channels 20, one of which is fixedly connected at the left end of the screening chamber 3, and the other is fixedly connected at the top of the right end of the screening chamber 3. The two discharge channels 20 provide discharge channels for the qualified and unqualified aluminum trihydride, respectively, to ensure that the material can be discharged from the screening chamber 3 in an orderly manner and collected. A receiving groove is formed in the right side of the interior of the screening chamber 3, and a gas cylinder 18 is fixedly connected to the top inner wall of the receiving groove. The driving end of the gas cylinder 18 is fixedly connected to an arc-shaped plate 19, and the outer wall of the arc-shaped plate 19 is slidingly connected to the inner wall of the receiving groove. Discharge openings are formed on both sides of the screening chamber 3, and the outer wall of the arc-shaped plate 19 is slidingly connected to the inner wall of the right discharge opening. The gas cylinder 18 generates power to drive the arc-shaped plate 19 to move upward, and the outer wall of the arc-shaped plate 19 is slidingly connected to the inner wall of the receiving groove and the right discharge opening. The main function of the arc-shaped plate 19 is to open the right discharge opening and recover the aluminum trihydride with unqualified particle size left on the screen plate 5. The top end of the screening chamber 3 is detachably connected to a reaction chamber 21. The reaction chamber 21 functions to deliver the reaction-generated aluminum trihydride downward into the screening chamber 3, providing the screening chamber 3 with material to be screened, and is the source of material supply in the entire aluminum trihydride preparation process.

[0038] Working principle: when it is necessary to replace the screen plate 5 with different hole diameters, the scraper 9 is pulled upward, and the scraper 9 moves vertically upward under the guidance of the positioning rod 8, thereby pressing the two ball head rods 11 to move to both sides, so that the square hole 13 loses the limitation of the two ball head rods 11, and the scraper 9 is quickly detached. Then, the rotating plate 17 is rotated to drive the screw rod 16 to rotate, and the screw rod 16 is connected with the screening chamber 3 by threads, so that the rotation of the screw rod 16 drives the clamping block 15 to move forward and backward, thereby fixing and releasing the clamping of the clamping groove 14 in the screen plate 5. When the clamping is released, the screen plate 5 can be removed and replaced with a screen plate 5 with a suitable hole diameter for continued use.

[0039] The reaction chamber 21 functions to deliver the reaction-generated aluminum trihydride downward into the screening chamber 3, the driving device drives the rotating shaft 6 to rotate and drives the scraper 9 to rotate to scrape the top side of the screen plate 5. The qualified aluminum trihydride passes through the screen plate 5 and is discharged through the left discharge opening and the discharge channel 20. The gas cylinder 18 in the receiving groove is opened to generate power to drive the arc-shaped plate 19 to move upward, and the aluminum trihydride with unqualified particle size left on the screen plate 5 is scraped by the scraper 9, and finally recycled through the right discharge opening and the discharge channel 20.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A particle size control mechanism for preparing aluminum trihydride, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to an installation plate (2), and the inside of the installation plate (2) is fixedly connected to a drive device. The drive end of the drive device is fixedly connected to a rotating shaft (6), and the inside of the rotating shaft (6) is provided with a disassembly and assembly mechanism. The top of the installation plate (2) is fixedly connected to a screening chamber (3), and the inside of the screening chamber (3) is provided with a material distribution mechanism. The disassembly and assembly mechanism includes a sieve plate (5), a protrusion (4) is fixedly connected to the inner wall of the screening chamber (3), the rear end of the sieve plate (5) is engaged with the outside of the protrusion (4), an opening (7) is opened inside the rotating shaft (6), a scraper (9) is detachably connected to the inner wall of the opening (7), a positioning rod (8) is fixedly connected to the bottom inner wall of the opening (7), circular grooves are opened on both the left and right sides inside the rotating shaft (6), a spring (10) is fixedly connected to the inner wall of the two circular grooves on the far side, a ball head rod (11) is fixedly connected to the close side of the two springs (10), and a fixing component is provided inside the sieve plate (5) for easy fixing.

2. The particle size control mechanism for aluminum trihydride preparation according to claim 1, characterized in that: The material distribution mechanism includes two feeding channels (20), one of which is fixedly connected to the left end of the screening chamber (3) at its right end, and the other is fixedly connected to the top right side of the screening chamber (3) at its left end. The screening chamber (3) has a receiving groove on its right side inside, and a cylinder (18) is fixedly connected to the top inner wall of the receiving groove. An arc plate (19) is fixedly connected to the driving end of the cylinder (18). A reaction chamber (21) is detachably connected to the top of the screening chamber (3).

3. The particle size control mechanism for aluminum trihydride preparation according to claim 1, characterized in that: The fixing component includes a locking block (15), and a locking groove (14) is provided on the front side of the inside of the sieve plate (5). The outer wall of the locking block (15) is slidably connected to the inner wall of the locking groove (14), and a screw rod (16) is rotatably connected to the front side of the inside of the locking block (15).

4. The particle size control mechanism for aluminum trihydride preparation according to claim 3, characterized in that: The external thread of the screw rod (16) is connected to the inside of the screening chamber (3). A rotating plate (17) is fixedly connected to the front side of the screw rod (16), and the rear side of the rotating plate (17) is in contact with the front side of the screening chamber (3).

5. The particle size control mechanism for preparing aluminum trihydride according to claim 1, characterized in that: The scraper (9) has a positioning groove (12) inside, and the outer wall of the positioning rod (8) is in contact with the inner wall of the positioning groove (12).

6. The particle size control mechanism for aluminum trihydride preparation according to claim 1, characterized in that: The scraper (9) has a square hole (13) inside. The outer walls of the two ball-head rods (11) are engaged with the inner wall of the square hole (13). The outer walls of the ball-head rods (11) are slidably connected to the inner wall of the circular groove.

7. The particle size control mechanism for preparing aluminum trihydride according to claim 2, characterized in that: The outer wall of the arc plate (19) is slidably connected to the inner wall of the receiving tank. The screening chamber (3) has discharge ports on both the left and right sides. The outer wall of the arc plate (19) is slidably connected to the inner wall of the discharge port on the right side.

8. The particle size control mechanism for aluminum trihydride preparation according to claim 1, characterized in that: The outer wall of the sieve plate (5) is in contact with the inner wall of the screening chamber (3), the bottom side of the scraper (9) is slidably connected to the top side of the sieve plate (5), and the outer wall of the rotating shaft (6) is rotatably connected to the inner wall of the sieve plate (5).

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