Hydraulic double-screw extruder for catalyst carrier

Abstract

The utility model discloses a hydraulic double-screw extruder for a catalyst carrier, which comprises a charging barrel, a screw rod, a screw rod, a screw rod and a screw rod, a fixed seat; the rotary motion execution element is configured to be movable relative to the fixed seat; the first screw rod and the second screw rod are meshed with each other and are movably arranged in the conveying cavity, and one end of the first screw rod and / or one end of the second screw rod are / is connected with the output end of the rotary motion execution element; and the linear motion execution element is fixedly arranged on the fixed seat and is used for driving the rotary motion execution element to move relative to the fixed seat. According to the hydraulic double-screw extruder for the catalyst carrier, a double-screw feeding structure is adopted, so that the production performance of the catalyst carrier is remarkably improved, a self-cleaning function is realized, the production efficiency is improved, the material uniformity is improved, the feeding selection is widened, and the problems of difficult feeding and blockage are successfully solved. The device can be used in cooperation with an automatic feeding machine, and automatic production of the catalyst carrier is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, and more specifically, to a hydraulic double-screw extruder for catalyst carriers. Background Art

[0002] In the preparation process of catalysts, the shape and properties of the carrier material play a crucial role in the efficiency of the catalytic reaction. The extrusion molding technology is widely used in the manufacture of catalyst carriers due to its high efficiency in continuous production. Among them, the single-screw extruder is one of the most commonly used devices. However, when processing materials with excellent self-lubricity, such as alumina, silica, and graphite, etc., this kind of device faces some unique defects.

[0003] Self-lubricating materials have excellent fluidity and low friction coefficients, which bring convenience to their processing to a certain extent, but at the same time, it is easy to cause slipping during the feeding process. In a single-screw extruder, the movement of the material in the barrel depends on the interaction between the propelling force of the screw and the material. When the frictional force between the material at the feeding port and the inner wall of the barrel is insufficient, feeding difficulties may occur, resulting in blockage. This not only reduces production efficiency but also may cause frequent shutdowns of the equipment and increase the need for manual cleaning. In severe cases, it cannot be used, bringing additional economic burdens to the production process. Summary of the Invention

[0004] The utility model aims to solve one of the technical problems in the related art. For this purpose, the utility model provides a hydraulic double-screw extruder for catalyst carriers, which adopts a double-screw feeding structure, significantly improves the production performance of catalyst carriers, realizes the self-cleaning function, improves production efficiency, improves material uniformity, and broadens the feeding selection, successfully solving the problems of material blockage and equipment cleaning.

[0005] The technical solution adopted by the utility model is as follows: Provide a hydraulic double-screw extruder for catalyst carriers, comprising:

[0006] A barrel, which has a feeding port, a conveying chamber, and an extrusion chamber;

[0007] A fixed seat;

[0008] A rotary motion execution element, which is configured to be movable relative to the fixed seat;

[0009] A first screw and a second screw that mesh with each other, both of which are movably arranged in the conveying chamber, and one end of the first screw and / or one end of the second screw is connected to the output end of the rotary motion execution element;

[0010] A linear motion actuator, which is fixedly installed on the fixed seat and is used to drive the rotary motion actuator to move relative to the fixed seat.

[0011] After adopting the above structure, the performance of the hydraulic double-screw extruder for catalyst carriers has been significantly improved.

[0012] First of all, the above structure realizes the self-cleaning function between the screw and the barrel, ensuring that residues can be quickly and efficiently cleaned during material replacement, effectively shortening the production cycle.

[0013] Secondly, the double-screw design improves the production efficiency of the equipment, making it simple and convenient to replace different materials during operation, thereby reducing the labor intensity of operators. It can be used in conjunction with an automatic feeding machine to achieve the automated production of catalyst carriers.

[0014] In addition, due to the excellent shear strength of the double screws, this characteristic further improves the uniformity of the carrier material, ensuring the consistency of product quality. The flexibility of the double screws also allows for a wide range of feeding options, including various states such as powder, semi-solid or gelatinous, greatly broadening the types of applicable raw materials. Most importantly, this structure effectively solves the slipping and clogging problems that may occur in single-screw equipment when processing materials with excellent self-lubricity (such as alumina, silica and graphite-based carrier materials) through the good meshing between the screws, avoiding shutdowns or manual cleaning caused by difficult feeding, and making the overall production process smoother and more efficient. These technical advantages jointly promote the optimization of the catalyst carrier production process and provide a solid foundation for the development of the industry.

[0015] According to an embodiment of the present invention, both the first screw and the second screw are provided with threads, and the threads mesh with each other; the setting of the gears enables the first screw and the second screw to rotate synchronously.

[0016] According to an embodiment of the present invention, a die for forming a catalyst carrier is provided at the discharge port of the extrusion cavity.

[0017] According to an embodiment of the present invention, the first screw is provided with a first conveying thread, the second screw is provided with a second conveying thread, and the first conveying thread and the second conveying thread are in the same or opposite directions.

[0018] According to an embodiment of the present invention, a moving plate is movably installed on the fixed seat, and the rotary motion actuator is fixedly installed on the moving plate.

[0019] According to an embodiment of the present invention, the linear motion actuator includes a first hydraulic cylinder, and the piston rod end of the first hydraulic cylinder is fixedly connected to the fixed seat.

[0020] According to an embodiment of the present utility model, the linear motion actuator further includes a second hydraulic cylinder, and the piston rod end of the second hydraulic cylinder is fixedly connected to the fixed seat.

[0021] According to an embodiment of the present utility model, a plurality of guide rods are provided on the fixed seat, and the moving plate is slidably engaged with the guide rods; the guide rods play a guiding role for the movement of the moving plate relative to the fixed seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of an extruder in an embodiment of the present utility model;

[0024] Figure 2 It is a structural diagram of an extruder in an embodiment of the present utility model;

[0025] Figure 3 It is a partial enlarged view of an extruder in an embodiment of the present utility model;

[0026] Figure 4 For Figure 3 the partial enlarged view at A in

[0027] Description of the reference numerals in the drawings:

[0028] 1, barrel; 2, fixed seat; 3, first hydraulic cylinder; 4, second hydraulic cylinder; 5, rotary motion actuator; 6, moving plate; 7, first screw; 8, second screw; 9, die; 10, guide rod; 11, feed inlet;

[0029] 1a, conveying cavity; 1b, extrusion cavity;

[0030] 7a, first conveying thread;

[0031] 8a, second conveying thread. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model. Embodiment 1

[0033] As Figures 1-4 shown, in this embodiment, a hydraulic double-screw extruder for a catalyst carrier is disclosed, including:

[0034] A barrel 1, which has a feed inlet 11, a conveying chamber 1a and an extrusion chamber 1b;

[0035] A fixed seat 2;

[0036] A rotary motion execution element 5, which is configured to be movable relative to the fixed seat 2;

[0037] The first screw 7 and the second screw 8 that mesh with each other, both of which are movably arranged in the conveying chamber 1a, and one end of the first screw 7 and / or one end of the second screw 8 are connected to the output end of the rotary motion execution element 5;

[0038] A linear motion execution element, which is fixedly installed on the fixed seat 2 and is used to drive the rotary motion execution element 5 to move relative to the fixed seat 2.

[0039] Furthermore, as combined with Figures 1-2 shown, the figure is a top view of the hydraulic double-screw extruder for a catalyst carrier. The figure includes a horizontally arranged cylindrical barrel 1 with a hollow interior. The barrel 1 is detachably installed on one side of the fixed seat 2. A rotary motion execution element 5 is fixedly installed on the fixed seat 2, and the rotary motion execution element 5 is used to drive the first screw 7 and / or the second screw 8 to rotate around its own axis. In this embodiment, the rotary motion execution element 5 is a motor, and in other embodiments, the rotary motion execution element 5 is an engine. The first screw 7 and the second screw 8 mesh with each other, and the main bodies of both extend into the feed inlet 11 of the barrel 1, and one end of them is fixedly connected to the output end of the motor. In this embodiment, one end of the first screw 7 is fixedly connected to the output end of the motor. The first screw 7 and the second screw 8 are both provided with threads, and the threads mesh with each other; the setting of the gears enables the first screw 7 and the second screw 8 to rotate synchronously.

[0040] Furthermore, in this embodiment, the inner diameter of the extrusion chamber 1b is larger than that of the feed inlet 11. The discharge port of the extrusion chamber 1b is provided with a die 9 for forming the catalyst carrier. The first screw 7 is provided with a first conveying thread 7a, and the second screw 8 is provided with a second conveying thread 8a. The spiral directions of the first conveying thread 7a and the second conveying thread 8a are the same. In other embodiments, the spiral directions of the first conveying thread 7a and the second conveying thread 8a are different.

[0041] Specifically, a moving plate 6 is movably mounted on the fixed seat 2, and the rotary motion execution element 5 is fixedly mounted on the moving plate 6. The linear motion execution element includes a first hydraulic cylinder 3 and a second hydraulic cylinder 4. The piston rod ends of the first hydraulic cylinder 3 and the second hydraulic cylinder 4 are both fixedly connected to the fixed seat 2. A plurality of guide rods 10 are provided on the fixed seat 2, and the moving plate 6 is slidably engaged with the guide rods 10; the guide rods 10 play a guiding role for the movement of the moving plate 6 relative to the fixed seat 2.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the description of this specification, the description with reference to the terms "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as a limitation of the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A hydraulic double-screw extruder for a catalyst carrier, characterized in that, Comprising: A barrel having a feed inlet, a conveying chamber and an extrusion chamber; A fixed seat; A rotary motion execution element configured to be movable relative to the fixed seat; A first screw and a second screw that mesh with each other, both being movably disposed in the conveying chamber, and one end of the first screw and / or one end of the second screw being connected to the output end of the rotary motion execution element; A linear motion execution element fixedly mounted on the fixed seat for driving the rotary motion execution element to move relative to the fixed seat.

2. The hydraulic double-screw extruder for a catalyst carrier according to claim 1, characterized in that: Both the first screw and the second screw are provided with threads that mesh with each other.

3. The hydraulic double-screw extruder for a catalyst carrier according to claim 1, characterized in that: The outlet of the extrusion chamber is provided with a die for forming a catalyst carrier.

4. A hydraulic double-screw extruder for a catalyst carrier according to claim 1, characterized in that: The first screw is provided with a first conveying thread, and the second screw is provided with a second conveying thread, and the first conveying thread and the second conveying thread are in the same or opposite directions.

5. A hydraulic double-screw extruder for a catalyst carrier according to claim 1, characterized in that: A moving plate is movably mounted on the fixed seat, and the rotary motion execution element is fixedly mounted on the moving plate.

6. A hydraulic double-screw extruder for a catalyst carrier according to claim 5, characterized in that: The linear motion execution element includes a first hydraulic cylinder, and the piston rod end of the first hydraulic cylinder is fixedly connected to the fixed seat.

7. A hydraulic double-screw extruder for a catalyst carrier according to claim 6, characterized in that: The linear motion execution element further includes a second hydraulic cylinder, and the piston rod end of the second hydraulic cylinder is fixedly connected to the fixed seat.

8. A hydraulic double-screw extruder for a catalyst carrier according to claim 5, characterized in that: A plurality of guide rods are provided on the fixed seat, and the moving plate is slidably engaged with the guide rods.

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