A catalyst extrusion molding device and a molding method

Abstract

The present invention relates to the technical field of catalyst preparation, and provides a catalyst extrusion molding device and a molding method. The catalyst extrusion molding device includes a base, a catalytic tank, a mixing mechanism, and an extrusion mechanism; the catalytic tank is arranged on the top of the base, and extrusion holes are evenly arranged at intervals along the circumference at the bottom of the side wall of the catalytic tank, and both the mixing mechanism and the extrusion mechanism are arranged in the catalytic tank; the mixing mechanism includes a mounting plate, a servo motor, and a stirring roller, the mounting plate is fixedly arranged at the upper part of the catalytic tank, and at least two servo motors are arranged and are all mounted on the mounting plate. Through the arrangement of the mixing mechanism and the extrusion mechanism, after the raw materials are mixed by the servo motor and the stirring roller, the reciprocating motor and the screw drive the pressing cover to slide down, and while extruding and shaping the catalyst in the catalytic tank, the raw materials adhered to the inner wall of the catalytic tank, the outer wall of the stirring roller, and the grooves of the stirring roller can be scraped and cleaned at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of catalyst preparation, and particularly to a catalyst extrusion molding device and a molding method. Background Art

[0002] A catalyst is a substance that can change the reaction rate in a chemical reaction, but its mass and chemical properties remain unchanged during the reaction process. The catalyst accelerates the reaction process by reducing the activation energy of the reaction or providing an easier reaction path, but it does not affect the thermodynamic equilibrium position of the reaction.

[0003] In the production and preparation process of catalysts, a bar extruding device is usually used to extrude and shape the reacted raw materials from the reaction kettle, and then a catalyst with an integral structure having continuous parallel channels is obtained after steps such as drying or high-temperature calcination, so that the finally produced catalyst has good mechanical strength, thermal stability and a relatively high specific surface area. However, in the existing bar extruding devices, in order to ensure that the catalyst raw materials can react sufficiently, a stirring area is usually provided in the device, and the stirring area and the extrusion area are usually separated. When preparing the catalyst, the raw materials need to be transferred from the stirring area to the extrusion area, and the catalyst raw materials are in a colloidal or viscous state at this time and have strong adhesiveness, which also causes some raw materials on the stirring area to be difficult to be utilized, not only causing waste of raw materials, but also requiring the device to be disassembled and cleaned later, and the operation is troublesome. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a catalyst extrusion molding device and a molding method, which can scrape and clean the raw materials adhered to the device while extruding the catalyst.

[0005] The technical solution is as follows: A catalyst extrusion molding device, including a base, a catalytic tank, a mixing mechanism, and an extrusion mechanism. The catalytic tank is arranged on the top of the base. The bottom of the side wall of the catalytic tank is evenly provided with extrusion holes at intervals along the circumference. The mixing mechanism and the extrusion mechanism are both arranged in the catalytic tank. The mixing mechanism includes a mounting plate, a servo motor, and a stirring roller. The mounting plate is fixedly arranged on the upper part of the catalytic tank. There are at least two servo motors, all of which are installed on the mounting plate. The number of stirring rollers is the same as that of the servo motors, and they are all rotatably arranged at the bottom of the mounting plate. The output shaft of the servo motor penetrates through the mounting plate and is fixedly connected to the stirring roller. The side wall of the stirring roller is spirally provided with grooves. The extrusion mechanism includes an extrusion cover, a reciprocating motor, a screw, a threaded seat, and a flip cover. The extrusion cover is slidably arranged in the catalytic tank and can slide along the inner wall of the catalytic tank and the stirring roller. A flip cover is rotatably arranged on the extrusion cover. The reciprocating motor is installed in the base. The threaded seat is fixedly arranged on the top of the extrusion cover. The screw is rotatably arranged in the catalytic tank, and the upper part of the screw penetrates through the extrusion cover and is rotatably connected to the threaded seat. The bottom end of the screw is fixedly connected to the output shaft of the reciprocating motor.

[0006] As a further preferred solution, the extrusion cover is provided with the same number of teeth as the stirring roller, and the teeth are adapted to the grooves on the stirring roller. When the extrusion cover slides down, the teeth will be embedded in the grooves on the stirring roller.

[0007] As a further preferred solution, the device further includes a cutting mechanism. The cutting mechanism includes a mounting seat, a cylinder, and an annular knife holder. The mounting seat is fixedly arranged on the side wall of the catalytic tank. The cylinder is fixedly arranged on the mounting seat. The annular knife holder is slidably arranged on the side wall of the catalytic tank, and the annular knife holder is fixedly connected to the output shaft of the cylinder.

[0008] As a further preferred solution, the annular knife holder is divided into an upper cutting part and a lower cutting part. The upper cutting part and the lower cutting part of the annular knife holder surround the extrusion holes, and oil holes are evenly arranged on the upper cutting part.

[0009] As a further preferred solution, the device further includes a lubricating mechanism. The lubricating mechanism includes a storage frame, a resilient bladder ring, a one-way valve, and a delivery pipe. The storage frame is fixedly arranged in the middle of the side wall of the catalytic tank. A resilient bladder ring is arranged at the bottom of the storage frame. A delivery pipe is arranged between the resilient bladder ring and the upper cutting part of the annular knife holder. The one-way valve is installed on the resilient bladder ring.

[0010] As a further preferred solution, when the annular knife holder slides up, it can contact the resilient bladder ring and exert pressure on it.

[0011] As a further preferred embodiment, a silicone seal is also included. The extrusion holes on the catalyst tank are all provided with silicone seals, and openings for the catalyst to pass through are cut on the silicone seals.

[0012] A catalyst molding method comprises the following steps:

[0013] S1. Open the cover and place the raw materials in the catalyst tank, start the servo motor, use the stirring roller to mix the catalyst and raw materials evenly, and then let them stand for reaction;

[0014] S2. After the reaction is completed, the reciprocating motor is started to rotate the screw, and the extrusion cover slides down immediately under the rotation drive of the screw to extrude the raw materials in the catalyst tank, so that the raw materials are extruded through the extrusion hole on the catalyst tank;

[0015] S3. Start the cylinder to make the annular knife holder slide up and down to cut the extruded catalyst raw materials, and then collect the cut catalyst materials.

[0016] The beneficial effects are as follows: 1. The present invention adopts the arrangement of a mixing mechanism and an extrusion mechanism. After the raw materials are mixed by a servo motor and a stirring roller, the extrusion cover is driven to slide down by a reciprocating motor and a screw rod. While the catalyst in the catalytic tank is extruded and shaped, the raw materials adhering to the inner wall of the catalytic tank, the outer wall of the stirring roller and the groove of the stirring roller can be scraped and cleaned at the same time;

[0017] 2. Through the setting of the cutting mechanism and the lubricating mechanism, the cylinder is used to drive the annular knife holder to reciprocate up and down to cut the extruded catalyst. When the annular knife holder rises, it will squeeze the rebound bag circle, and the lubricant in the rebound bag circle will be injected into the upper cutting part of the annular knife holder through the delivery pipe and flow out through the oil hole to avoid the catalyst from sticking during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the embodiments of the present invention will become more easily understood through the following detailed description with reference to the accompanying drawings, in which several embodiments of the present invention will be described by way of example and not limitation.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the present invention after the catalyst tank is cut open.

[0021] Figure 3 It is a structural schematic diagram of the extrusion mechanism of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the extrusion cover and the stirring roller of the present invention.

[0023] Figure 5 It is a schematic structural diagram of the cutting mechanism of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the lubrication mechanism of the present invention.

[0025] Figure 7 This is a schematic diagram of the storage frame after being cut open according to the present invention.

[0026] Figure 8 It is a schematic diagram of the structure of the catalyst tank and silica gel seal of the present invention.

[0027] Wherein: 1-base, 2-catalytic tank, 21-extrusion hole, 3-mixing mechanism, 31-mounting plate, 32-servo motor, 33-stirring roller, 4-extrusion mechanism, 41-extrusion cover, 42-reciprocating motor, 43-screw, 44-threaded seat, 45-flip cover, 5-cutting mechanism, 51-mounting seat, 52-cylinder, 53-annular tool holder, 531-oil hole, 6-lubricating mechanism, 61-storage frame, 62-rebound bag ring, 63-check valve, 64-delivery pipe, 7-silicone seal. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0030] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8, an embodiment of the present invention provides a catalyst extrusion molding device, including a base 1, a catalytic tank 2, a silica gel seal 7, a mixing mechanism 3 and an extrusion mechanism 4. The catalytic tank 2 is fixedly arranged on the top of the base 1. Ten extrusion holes 21 are evenly spaced along the circumferential direction at the bottom of the side wall of the catalytic tank 2, and a silica gel seal 7 is arranged in each extrusion hole 21. A cross cut is provided on the silica gel seal 7. The silica gel seal 7 can be used to block the extrusion holes 21, and when the catalyst is extruded, the raw materials can smoothly discharge from the extrusion holes 21 through the cross cut on the silica gel seal 7;

[0031] The mixing mechanism 3 is composed of a mounting plate 31, a servo motor 32 and a stirring roller 33. The mounting plate 31 is fixedly arranged on the upper part of the catalytic tank 2. Two servo motors 32 are installed on the upper surface of the mounting plate 31. The output shaft of the servo motor 32 penetrates through the mounting plate 31 and extends vertically downward. Two stirring rollers 33 are rotatably arranged on the upper surface of the mounting plate 31. The stirring rollers 33 are fixedly connected to the output shaft of the servo motor 32, and grooves are spirally arranged on the side walls of the stirring rollers 33. Starting the servo motor 32 can drive the stirring rollers 33 to rotate. With the cooperation of the two stirring rollers 33, the catalyst raw materials in the catalytic tank 2 can be evenly mixed;

[0032] The extrusion mechanism 4 is composed of an extrusion cover 41, a reciprocating motor 42, a screw 43, a threaded seat 44 and a flip cover 45. The extrusion cover 41 is slidably arranged in the catalytic tank 2. The extrusion cover 41 can slide along the inner wall of the catalytic tank 2 and the outer wall of the stirring roller 33. Two teeth are arranged on the extrusion cover 41. The two teeth are adapted to the grooves on the stirring roller 33. When the extrusion cover 41 slides down, the teeth will be embedded in the grooves on the stirring roller 33, and while sliding down, the adhered materials in the grooves will be scraped off. A flip cover 45 is rotatably arranged on the extrusion cover 41. Opening the flip cover 45 can input raw materials into the catalytic tank 2. The threaded seat 44 is fixedly arranged on the top of the extrusion cover 41. The reciprocating motor 42 is installed in the base 1. The screw 43 is rotatably arranged in the catalytic tank 2. The upper part of the screw 43 penetrates through the extrusion cover 41 and is rotatably connected to the threaded seat 44, and the output shaft of the reciprocating motor 42 penetrates through the catalytic tank 2 and is fixedly connected to the screw 43. Starting the reciprocating motor 42 can make the screw 43 rotate clockwise or counterclockwise, and with the cooperation of the threaded seat 44, the extrusion cover 41 can rise or fall along the inner wall of the catalytic tank 2.

[0033] In the embodiment of the present invention, the worker first needs to open the flip cover 45, put the raw materials into the catalytic tank 2, and then start the servo motor 32 to drive the two stirring rollers 33 to rotate, so as to mix the raw materials in the catalytic tank 2 evenly. After that, the raw materials are left standing for a period of time to fully react. After the reaction is complete, the reciprocating motor 42 is started to drive the screw 43 to rotate clockwise. Under the cooperation of the threaded seat 44, the extrusion cover 41 will slowly slide down to extrude the raw materials in the catalytic tank 2 downward. At the same time, the extrusion cover 41 will scrape off the raw materials adhering to the inner wall of the catalytic tank 2 and the outer wall of the stirring roller 33. The teeth on the extrusion cover 41 will also be embedded in the grooves of the stirring roller 33 to clean the raw materials in the grooves. Finally, after passing through the extrusion holes 21 on the catalytic tank 2, the raw materials will be extruded in a specific shape.

[0034] Please refer to Figure 1 and Figure 5 In the embodiment of the present invention, there is also a cutting mechanism 5, which is composed of a mounting seat 51, a cylinder 52 and an annular tool holder 53. The mounting seat 51 is fixedly arranged on the upper part of the front side of the catalytic tank 2. The cylinder 52 is installed on the mounting seat 51, and the output shaft of the cylinder 52 is arranged vertically downward. And an annular tool holder 53 is slidably arranged on the outer side wall of the catalytic tank 2. The annular tool holder 53 is divided into an upper cutting part and a lower cutting part, and its upper cutting part and lower cutting part surround the extrusion holes 21 on the catalytic tank 2. And the upper cutting part of the annular tool holder 53 is fixedly connected to the output shaft of the cylinder 52. Starting the cylinder 52 can drive the annular tool holder 53 to slide up and down reciprocally. And ten oil holes 531 are evenly spaced on the upper cutting part, and the oil holes 531 are exactly located directly above the extrusion holes 21.

[0035] Please refer to Figure 1 , Figure 6 and Figure 7 In the embodiment of the present invention, there is also a lubricating mechanism 6, which is composed of a storage frame 61, a rebound bladder ring 62, a one-way valve 63 and a delivery pipe 64. The storage frame 61 is fixedly arranged in the middle of the side wall of the catalytic tank 2. Lubricant is stored in the storage frame 61. The bottom of the storage frame 61 is fixedly connected to the rebound bladder ring 62, and the rebound bladder ring 62 is also filled with lubricant. And a one-way valve 63 is installed on the rebound bladder ring 62. The lubricant in the storage frame 61 can enter the rebound bladder ring 62 through the one-way valve 63, while the lubricant in the rebound bladder ring 62 cannot be discharged into the storage frame 61. A delivery pipe 64 is arranged between the rebound bladder ring 62 and the upper cutting part of the annular tool holder 53. The lubricant in the rebound bladder ring 62 can flow into the upper cutting part of the annular tool holder 53 through the delivery pipe 64 and be discharged through the oil holes 531. And when the annular tool holder 53 slides upward, it can contact the rebound bladder ring 62 and exert pressure on it.

[0036] In an embodiment of the present invention, when the catalyst is extruded from the extrusion hole 21, the worker needs to start the air cylinder 52 to drive the annular tool holder 53 to reciprocate up and down, and cut the catalyst extruded from the extrusion hole 21 during the sliding process. When the annular tool holder 53 slides upward, the top of the annular tool holder 53 will contact and press the elastic return bladder 62, causing the elastic return bladder 62 to contract. The lubricant inside it will then flow into the upper cutting part of the annular tool holder 53 through the delivery pipe 64 and drip to the extrusion hole 21 through the oil hole 531, which can avoid the situation that the catalyst adheres to the annular tool holder 53 during cutting. When the annular tool holder 53 returns downward, the elastic return bladder 62 will recover under its own elasticity and extract the lubricant in the storage frame 61 through the one-way valve 63, so that the inside of the elastic return bladder 62 is refilled with lubricant.

[0037] A catalyst forming method includes the following steps:

[0038] S1. Open the flip cover 45, place the raw materials in the catalytic tank 2, start the servo motor 32, drive the stirring roller 33 to rotate, mix the catalyst raw materials in the catalytic tank 2 evenly, and then let it stand for a period of time to wait for the raw materials to react;

[0039] S2. After the reaction is completed, start the reciprocating motor 42 to make the screw 43 rotate clockwise. The extrusion cover 41 will slide downward immediately under the rotation drive of the screw 43, extrude the raw materials in the catalytic tank 2, and extrude the raw materials from the extrusion hole 21 on the catalytic tank 2;

[0040] S3. Start the air cylinder 52 to make the annular tool holder 53 reciprocate up and down, cut the extruded catalyst raw materials, and then collect the cut catalyst materials.

[0041] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skill in the art in the technical field to understand the disclosed embodiments.

[0042] The above are only optional embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A catalyst extrusion molding device, characterized in that: It includes a base (1), a catalytic tank (2), a mixing mechanism (3) and an extrusion mechanism (4). The catalytic tank (2) is arranged on the top of the base (1). Extrusion holes (21) are evenly spaced along the circumferential direction at the bottom of the side wall of the catalytic tank (2). Both the mixing mechanism (3) and the extrusion mechanism (4) are arranged in the catalytic tank (2). The mixing mechanism (3) includes a mounting plate (31), a servo motor (32) and a stirring roller (33). The mounting plate (31) is fixedly arranged at the upper part of the catalytic tank (2). At least two servo motors (32) are arranged and are all mounted on the mounting plate (31). The number of the stirring rollers (33) is the same as that of the servo motors (32). They are all rotatably arranged at the bottom of the mounting plate (31). And the output shaft of the servo motor (32) penetrates through the mounting plate (31) and is fixedly connected with the stirring roller (33). Grooves are spirally arranged on the side wall of the stirring roller (33). The extrusion mechanism (4) includes an extrusion cover (41), a reciprocating motor (42), a screw rod (43), a threaded seat (44) and a flip cover (45). The extrusion cover (41) is slidably arranged in the catalytic tank (2) and can slide along the inner wall of the catalytic tank (2) and the stirring roller (33). And a flip cover (45) is rotatably arranged on the extrusion cover (41). The reciprocating motor (42) is mounted in the base (1). The threaded seat (44) is fixedly arranged at the top of the extrusion cover (41). The screw rod (43) is rotatably arranged in the catalytic tank (2). And the upper part of the screw rod (43) penetrates through the extrusion cover (41) and is rotatably connected with the threaded seat (44). The bottom end of the screw rod (43) is fixedly connected with the output shaft of the reciprocating motor (42). Teeth with the same number as that of the stirring rollers (33) are arranged on the extrusion cover (41), and the teeth are adapted to the grooves on the stirring roller (33). When the extrusion cover (41) slides down, the teeth will be embedded into the grooves on the stirring roller (33). This device further includes a cutting mechanism (5). The cutting mechanism (5) includes a mounting seat (51), a cylinder (52) and an annular knife rest (53). The mounting seat (51) is fixedly arranged on the side wall of the catalytic tank (2). The cylinder (52) is fixedly arranged on the mounting seat (51). The annular knife rest (53) is slidably arranged on the side wall of the catalytic tank (2), and the annular knife rest (53) is fixedly connected with the output shaft of the cylinder (52). The annular knife rest (53) is divided into an upper cutting part and a lower cutting part. The upper cutting part and the lower cutting part of the annular knife rest (53) surround the extrusion holes (21), and oil holes (531) are evenly spaced on the upper cutting part.

2. The catalyst extrusion molding equipment according to claim 1, characterized in that: The device further includes a lubricating mechanism (6), and the lubricating mechanism (6) includes a storage frame (61), a resilient bladder ring (62), a one-way valve (63) and a delivery pipe (64). The storage frame (61) is fixedly arranged in the middle of the side wall of the catalytic tank (2). A resilient bladder ring (62) is arranged at the bottom of the storage frame (61). A delivery pipe (64) is arranged between the resilient bladder ring (62) and the upper cutting part of the annular tool holder (53). The one-way valve (63) is installed on the resilient bladder ring (62).

3. A catalyst extrusion molding device according to claim 2, characterized in that: When the annular tool holder (53) slides upward, it can contact the resilient bladder ring (62) and exert pressure on it.

4. A catalyst extrusion molding device according to claim 3, characterized in that: It further includes a silica gel seal (7). Silica gel seals (7) are arranged in the extrusion holes (21) opened on the catalytic tank (2), and openings for the catalyst to pass through are cut on the silica gel seals (7).

5. A catalyst forming method, characterized in that: It adopts a catalyst extrusion molding device described in claim 4, including the following steps: S1. Open the flip cover (45), place the raw materials in the catalytic tank (2), start the servo motor (32), and use the stirring roller (33) to mix the catalyst raw materials evenly, and then let it stand for reaction; S2. After the reaction is completed, start the reciprocating motor (42) to rotate the screw (43). The extrusion cover (41) slides downward immediately under the rotational drive of the screw (43) to extrude the raw materials in the catalytic tank (2), so that the raw materials are extruded and formed through the extrusion holes (21) on the catalytic tank (2); S3. Start the cylinder (52) to make the annular tool holder (53) slide up and down reciprocally to cut the extruded catalyst raw materials, and then collect the cut catalyst materials.

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