Material screening and intercepting device

Abstract

The application relates to the technical field of material screening, in particular to a material screening and intercepting device, a screen is connected to a first main pipeline and arranged along a cross section, an outer wall of the first main pipeline is provided with a mounting seat for mounting a vibrator; a first connecting pipeline is connected to an axial upper end of the first main pipeline, a second connecting pipeline is connected to an axial lower end of the first main pipeline, and the first and second connecting pipelines are all axially telescopic; two ends of an elastic connecting piece are connected to two ends of the first connecting pipeline correspondingly. The material screening and intercepting device can be connected to a material conveying pipeline of a production device, the screen can screen and filter continuously flowing powder raw materials under the action of a vibrating force, and can intercept impurities possibly generated in the operation process of the production device; the first and second connecting pipelines are both axially telescopic, the vibrating force is effectively isolated from being conducted to upstream and downstream devices, the elastic connecting piece plays a bearing and vibration isolation role, and the installation of the material screening and intercepting device is reliable.

Description

Technical Field

[0001] This application relates to the field of material screening technology, specifically to a material screening and interception device. Background Technology

[0002] The relevant technologies use powder raw material production equipment, such as lithium battery positive and negative electrode material production equipment, which have high requirements for the purity of powder raw materials. In practice, it has been found that some production equipment may generate impurities that mix into the powder raw materials during the material transportation process, affecting the quality of the final product. Utility Model Content

[0003] This application provides a material screening and interception device to solve the problem of impurities generated during equipment operation affecting product quality.

[0004] To solve the above-mentioned technical problems, this application provides a material screening and interception device, comprising:

[0005] A first main pipe and a screen, the screen being connected to the first main pipe and arranged along the cross-section of the first main pipe, the outer wall of the first main pipe having a mounting base for mounting a vibrator;

[0006] A first connecting pipe and a second connecting pipe, wherein the first connecting pipe is connected to the upper axial end of the first main pipe and is used to connect to the material inflow pipe of the production equipment, and the second connecting pipe is connected to the lower axial end of the first main pipe and is used to connect to the material outflow pipe of the production equipment; both the first connecting pipe and the second connecting pipe are axially expandable and contractible.

[0007] An elastic connector, wherein the two ends of the elastic connector in the extension direction are correspondingly connected to the two ends of the first connecting pipe in the extension direction.

[0008] Optionally, the material screening and interception device further includes connecting portions located at both ends of the first connecting pipe in the extension direction, and the elastic connector includes an elastic element connected between the two connecting portions.

[0009] Optionally, the resilient connector further includes:

[0010] A connecting rod passes through the two connecting parts, and an elastic element is fitted onto the connecting rod and clamped between the two connecting parts;

[0011] A limiting part is connected to both ends of the connecting rod along its axial direction, and the limiting part abuts against the outer wall of the connecting part at the same end.

[0012] Optionally, the material screening and interception device further includes:

[0013] The second main pipe is connected to the upper axial end of the first connecting pipe and is used to connect with the material inflow pipe. The peripheral wall of the second main pipe is provided with an opening.

[0014] The cover is detachably connected to the opening.

[0015] Optionally, a first connecting flange and a second connecting flange are respectively provided at the ends of the first connecting pipe and the second main pipe that are close to each other. The first connecting pipe and the second main pipe are connected through the first connecting flange and the second connecting flange, and one of the first connecting flange and the second connecting flange forms one of the connecting parts.

[0016] The first connecting pipe and the first main pipe are respectively provided with a third connecting flange and a fourth connecting flange at their respective ends that are close to each other. The first connecting pipe and the first main pipe are connected through the third connecting flange and the fourth connecting flange, and one of the third connecting flange and the fourth connecting flange forms another connecting part.

[0017] Optionally, the screen is made of a non-metallic material.

[0018] Optionally, the inner walls of the first main pipe and the second main pipe have a protective coating.

[0019] Optionally, the mounting base is welded and fixed to the outer wall of the first main pipe;

[0020] Alternatively, the mounting base includes a base body and a U-shaped connecting portion, the base body being connected to the open end of the U-shaped connecting portion, and the mounting base encircling the outer periphery of the first main pipe.

[0021] Optionally, the material screening and interception device further includes a fifth connecting flange for connecting to the material inflow pipeline and a sixth connecting flange for connecting to the material outflow pipeline, wherein the fifth connecting flange and the sixth connecting flange have different diameters.

[0022] Optionally, the fifth connecting flange is provided with a first connecting hole, and the sixth connecting flange is provided with a second connecting hole, wherein the width of at least one of the first connecting hole and the second connecting hole gradually increases along its extending direction.

[0023] The technical effects of this application are as follows:

[0024] This material screening and interception device can be connected to the material conveying pipeline of production equipment. Specifically, the first connecting pipe is connected to the material inflow pipeline of the production equipment, and the second connecting pipe is connected to the material outflow pipeline of the production equipment. The first main pipeline is the main channel for material screening and flow. The vibrating device is connected to the outer wall of the first main pipeline through a mounting base. The vibration force generated by the vibrating device acts on the first main pipeline. The screen is connected to the first main pipeline and is set along the cross-section of the first main pipeline, that is, the screen is directly embedded in the material conveying flow path. Under the action of vibration force, the screen can screen and filter the continuously flowing powder raw material, allowing the powder raw material to pass smoothly through the screen and effectively intercepting impurities that may be generated during the operation of the production equipment. This prevents impurities from entering subsequent processes or contaminating the purified powder raw material, significantly improving the purity of the powder raw material and improving the quality of the final product. Both the first and second connecting pipes are axially expandable structures. These expandable pipes effectively isolate the vibration force of the first main pipe from being transmitted to the material inflow and outflow pipes, thus minimizing the transmission of vibration to upstream and downstream equipment and protecting external precision equipment from vibration interference. The first connecting pipe is connected to the upper axial end of the first main pipe, with the two ends of the elastic connector corresponding to the two ends of the first connecting pipe's extension direction. The elastic connector provides necessary structural support and load-bearing capacity, ensuring the reliability of the connection between the first connecting pipe and the material inflow pipe. Furthermore, its elasticity prevents direct vibration transmission caused by rigid connections, further enhancing the vibration isolation effect. This dual vibration isolation design significantly reduces the impact of vibration on upstream and downstream equipment, extends the service life of production equipment, and reduces maintenance costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a specific embodiment of the material screening and interception device provided in this application;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the medium screen;

[0027] in, Figures 1-2 The accompanying figure labels are as follows:

[0028] 100 - First main pipeline;

[0029] 101 - Screen; 101a - Screen aperture; 101b - Mounting hole;

[0030] 102 - Mounting base;

[0031] 103 - First connecting pipe;

[0032] 104 - Second connecting pipe;

[0033] 105-Elastic connector; 1051-Elastic component; 1052-Connecting rod; 1053-Limiting part; 1053-1-Locking component; 1053-2-Buffer pad;

[0034] 106 - Second main pipe; 1061 - Expansion pipe; 106a - Opening;

[0035] 107 - First connecting flange;

[0036] 108 - Second connecting flange;

[0037] 109 - Third connecting flange;

[0038] 110 - Fourth connecting flange;

[0039] 111 - Fifth connecting flange; 111a - First connecting hole;

[0040] 1A - Connecting part. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0043] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0044] In this description, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0045] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a specific embodiment of the material screening and interception device provided in this application; Figure 2 for Figure 1 A schematic diagram of the structure of the medium-sized screen.

[0046] This application provides a material screening and interception device, including:

[0047] A first main pipe 100 and a screen 101 are connected to the first main pipe 100 and are arranged along the cross-section of the first main pipe 100. The outer wall of the first main pipe 100 has a mounting seat 102 for mounting a vibrator.

[0048] The first connecting pipe 103 and the second connecting pipe 104 are connected to the upper axial end of the first main pipe 100 and are used to connect to the material inflow pipe of the production equipment. The second connecting pipe 104 is connected to the lower axial end of the first main pipe 100 and is used to connect to the material outflow pipe of the production equipment. Both the first connecting pipe 103 and the second connecting pipe 104 are axially expandable.

[0049] The elastic connector 105 is connected at both ends in the extension direction to the two ends in the extension direction of the first connecting pipe 103.

[0050] The material screening and interception device in this embodiment can be connected to the material conveying pipeline of the production equipment. Specifically, the first connecting pipe 103 is connected to the material inflow pipeline of the production equipment, and the second connecting pipe 104 is connected to the material outflow pipeline of the production equipment. The first main pipeline 100 is the main channel for material screening and flow. The vibrating device is connected to the outer wall of the first main pipeline 100 through the mounting base 102. The vibration force generated by the vibrating device acts on the first main pipeline 100. The screen 101 is connected to the first main pipeline 100 and is set along the cross-section of the first main pipeline 100, that is, the screen 101 is directly embedded in the material conveying flow path. Under the action of vibration force, the screen 101 can screen and filter the continuously flowing powder raw material, so that the powder raw material passes through the screen 101 uniformly and effectively intercepts impurities that may be generated during the operation of the production equipment, preventing impurities from entering subsequent processes or contaminating the purified powder raw material as much as possible, significantly improving the purity of the powder raw material, and improving the maximum efficiency. The quality of the final product; both the first connecting pipe 103 and the second connecting pipe 104 are axially expandable structures. This expandable pipe can effectively isolate the vibration force of the first main pipe 100 from being transmitted to the material inflow pipe and the material outflow pipe, thereby minimizing the transmission of vibration to upstream and downstream equipment and protecting external precision equipment from vibration interference from vibration devices; the first connecting pipe 103 is connected to the axial upper end of the first main pipe 100, and the two ends of the extension direction of the elastic connector 105 are correspondingly connected to the two ends of the extension direction of the first connecting pipe 103. On the one hand, the elastic connector 105 provides necessary structural support and plays a load-bearing role, ensuring the reliability of the connection between the first connecting pipe 103 and the material inflow pipe as much as possible; on the other hand, its elasticity avoids the direct transmission of vibration caused by rigid connection, further enhancing the vibration isolation effect. This dual vibration isolation design greatly reduces the impact of vibration on upstream and downstream equipment, extends the service life of production equipment, and reduces maintenance costs.

[0051] The material screening and interception device in this application embodiment has a simple structure, is easy to install, has low cost, and is more cost-effective. The total height of the device is about 500mm, and it can be directly modified on the material conveying pipeline of the production equipment without requiring independent space. It is suitable for working conditions where space is limited and a cost-effective screening solution is required.

[0052] In this embodiment of the application, the material screening and interception device includes four elastic connectors 105, which are located on the side of the first connecting pipe 103 and are distributed at intervals along the circumference of the first connecting pipe 103.

[0053] Of course, there is no limit to the number of elastic connectors 105 included in the material screening and interception device, as long as they can stably perform their load-bearing function. In some other embodiments of this application, the number of elastic connectors 105 included in the material screening and interception device can be at least one. When there is only one elastic connector, the elastic connector 105 can be fitted around the outer periphery of the first connecting pipe 103 to ensure balanced circumferential force.

[0054] As mentioned above, the screen 101 is connected to the first main pipe 100 and is arranged along the cross-section of the first main pipe 100. In some embodiments of this application, the material screening and interception device is provided with at least one screen 101. The screen 101 can be connected between the first connecting pipe 103 and the first main pipe 100; or, the screen 101 can be connected between the second connecting pipe 104 and the first main pipe 100; or, the inner wall of the first main pipe 100 has an annular stepped portion, and the screen 101 is connected to the annular stepped portion, thereby being arranged inside the first main pipe 100.

[0055] like Figure 2 As shown, the screen 101 has a screen hole 101a in the middle. The aperture of the screen hole 101a is set according to the particle size and flowability to be screened. The screen 101 has four mounting holes 101b on its edge for connecting parts to pass through and fix the screen 101. The thickness of the screen 101 should meet the requirements for wear resistance and strength.

[0056] The vibrator serves as the power source, causing the powder material to be evenly distributed on the screen 101 through vibration, thereby promoting the flow and sieving of the powder material. The vibrator can be an electric vibrator or a pneumatic vibrator.

[0057] The first connecting pipe 103 and the second connecting pipe 104 can be made of soft materials such as silicone or TPU (Thermoplastic Polyurethane) plastic; or, the first connecting pipe 103 and the second connecting pipe 104 can adopt a corrugated pipe structure.

[0058] Please continue to refer to this. Figure 1 In this embodiment of the application, the material screening and interception device further includes connecting portions 1A located at both ends of the extension direction of the first connecting pipe 103, and the elastic connector 105 includes an elastic element 1051, which is connected between the two connecting portions 1A.

[0059] As configured above, the two connecting parts 1A distributed along the extension direction of the first connecting pipe 103 provide a reliable mounting base for the elastic element 1051. The elastic element 1051 is connected between the two connecting parts 1A. On the one hand, the elastic element 1051 plays a load-bearing role, bearing the static weight of the material screening and interception device, and maintaining the overall structural integrity and sealing of the device. On the other hand, when the vibration force generated by the vibration device is transmitted axially to the first connecting pipe 103, the elastic element 1051 will undergo axial deformation, thereby absorbing and dissipating vibration energy, effectively preventing the vibration from being transmitted to the material inflow pipe connected to the first connecting pipe 103, and protecting the upstream equipment from vibration interference from the vibration device.

[0060] As mentioned above, the elastic element 1051 is connected between the two connecting portions 1A, and can be implemented in various ways. In the embodiment of this application, such as... Figure 1 As shown, the elastic connector 105 also includes:

[0061] Connecting rod 1052 passes through two connecting parts 1A, elastic element 1051 is fitted onto connecting rod 1061 and clamped between the two connecting parts 1A;

[0062] The limiting part 1053 is connected to both ends of the connecting rod 1052 along the axial direction, and the limiting part 1053 abuts against the outer wall of the connecting part 1A at the same end.

[0063] It should be noted here that the sidewalls facing each other of the two connecting parts 1A are defined as the inner sidewalls, and the sidewalls facing away from each other are defined as the outer sidewalls.

[0064] As configured above, the connecting rod 1052 serves as the structural skeleton of the elastic connector 105, primarily bearing the static weight of the material screening and interception device. The rigid structure allows for better load-bearing performance, ensuring the overall structural stability of the device. The connecting rod 1052 is inserted inside the elastic component 1051, which also helps to prevent the elastic component 1051 from undergoing uncontrolled bending instability under high pressure or large deformation, and ensures that the elastic component 1051 always undergoes axial expansion and contraction deformation, making the mechanical properties of the elastic component 1051 stable and reliable.

[0065] The connecting rod 1052 can be a screw structure, and the limiting part 1053 includes a locking nut. During assembly, the position of the locking nut can be adjusted to pre-compress the elastic element 1051, allowing it to provide stable support stiffness and reduce the deformation and displacement of the first connecting pipe 103. When the elastic element 1051 needs to be replaced due to aging and failure after long-term use, the limiting part 1053 can be removed to easily remove the old elastic element 1051 and replace it with a new one, making maintenance simple and quick.

[0066] In other embodiments of this application, the axial ends of the elastic member 1051 are fixed to the inner sidewalls of the two connecting portions 1A, such as by welding the axial ends of the elastic member 1051 to the inner sidewalls of the two connecting portions 1A. This eliminates the need for the connecting rod 1052 and the limiting portion 1053, simplifying the structure of the elastic connector 105 and reducing costs.

[0067] Furthermore, the elastic element 1051 can be implemented in various ways, such as using a helical spring, a rubber column, or a disc spring assembly. In this embodiment, the elastic element 1051 uses a helical spring with a wire diameter of 2.5mm and a material of 304 stainless steel to reduce the spring coefficient and prevent the first connecting pipe 103 from becoming taut.

[0068] Please continue to refer to this. Figure 1 In this embodiment of the application, the limiting part 1053 includes a locking member 1053-1 and a buffer pad 1053-2. The buffer pad 1053-2 is located at the end closer to the connecting part 1A than the locking member 1053-1. The buffer pad 1053-1 abuts against the outer wall of the connecting part 1A at the same end.

[0069] As set up above, the locking component 1053-1 (such as a locking nut) serves as the main rigid constraint and undertakes the main locking function, ensuring that the axial fixation of the connecting rod 1052 is reliable. The buffer pad 1053-2 is set between the locking component 1053-1 and the connecting part 1A to avoid rigid contact between the locking component 1053-1 and the connecting part 1A as much as possible, thereby further playing the role of buffering and energy absorption.

[0070] In this embodiment, the connecting part 1A is provided with a connecting hole for the connecting rod 1052 to pass through. In order to minimize the friction between the connecting rod 1052 and the connecting hole, this embodiment adds a non-metallic bushing, such as a nylon bushing, to minimize the generation of metallic foreign objects.

[0071] Please continue to refer to this. Figure 1 In this embodiment of the application, the material screening and interception device further includes:

[0072] The second main pipe 106 is connected to the upper axial end of the first connecting pipe 103 and is used to connect with the material inflow pipe. The peripheral wall of the second main pipe 106 is provided with an opening 106a.

[0073] The cover is detachably connected to the opening 106a.

[0074] As set up above, the main function of the second main pipe 106 is to guide the flow of powder raw materials. At the same time, an opening 106a is provided to facilitate real-time monitoring of foreign objects intercepted during the internal screening process, facilitate foreign object removal operations, ensure unobstructed material conveying pipeline, and ensure the purity of powder raw materials.

[0075] like Figure 1 As shown in the embodiment of this application, the peripheral wall of the second main pipe 106 has a protruding pipe 1061 that protrudes outward in the transverse direction. The outer end of the protruding pipe 1061 forms an opening 106a. The cap is detachably connected to the opening 106a. The specific connection method is not limited. For example, the cap can be connected to the outer end of the protruding pipe 1061 by means of threaded connection, snap-fit, interference fit, etc., to close the opening 106a.

[0076] Please continue to refer to this. Figure 1 In this embodiment of the application, a first connecting flange 107 and a second connecting flange 108 are respectively provided at the ends of the first connecting pipe 103 and the second main pipe 106 that are close to each other. The first connecting pipe 103 and the second main pipe 106 are connected through the first connecting flange 107 and the second connecting flange 108, and one of the first connecting flange 107 and the second connecting flange 108 forms a connection part 1A.

[0077] The first connecting pipe 103 and the first main pipe 100 are respectively provided with a third connecting flange 109 and a fourth connecting flange 110 at their respective ends that are close to each other. The first connecting pipe 103 and the first main pipe 100 are connected through the third connecting flange 109 and the fourth connecting flange 110, and one of the third connecting flange 109 and the fourth connecting flange 110 forms another connecting part 1A.

[0078] As set up above, the first connecting flange 107, the second connecting flange 108, the third connecting flange 109, and the fourth connecting flange 110 can adopt standard flange specifications to facilitate the connection between pipes; one of the first connecting flange 107 and the second connecting flange 108 serves as one mounting base for the elastic connector 105, and one of the third connecting flange 109 and the fourth connecting flange 110 serves as the other mounting base for the elastic connector 105, eliminating the need for a separate mounting structure and simplifying the structure of the material screening and interception device.

[0079] Depend on Figure 1 As can be seen, in this embodiment of the application, the second connecting flange 108 and the fourth connecting flange 110 form two connecting parts 1A. The second connecting flange 108 and the fourth connecting flange 110 are respectively provided with protrusions that protrude outward in the lateral direction. The number of protrusions is the same as the number of elastic connectors 105. The protrusions are used to connect the elastic connectors 105.

[0080] In this embodiment, the screen 101 is made of a non-metallic material, including but not limited to nylon, to minimize the introduction of metallic impurities due to wear or corrosion and improve the purity of the powder raw material.

[0081] In this embodiment, the inner walls of the first main pipe 100 and the second main pipe 106 are provided with a protective coating to minimize direct contact between the powder material and the metal parts of the pipe. The protective coating can resist acids and alkalis and wear, thereby minimizing the introduction of metal foreign objects due to wear or corrosion and improving the purity of the powder raw material.

[0082] As mentioned above, the outer wall of the first main pipe 100 has a mounting base 102 for mounting a vibrator, and the mounting base 102 and the outer wall of the first main pipe 100 can be implemented in various ways:

[0083] As in Figure 1 In the embodiment shown, the mounting base 102 is welded and fixed to the outer wall of the first main pipe 100, which helps to improve the connection strength between the mounting base 102 and the first main pipe 100, making the mounting base 102 reliably installed.

[0084] In some other embodiments, the mounting base 102 includes a base body and a U-shaped connecting portion, the base body being connected to the open end of the U-shaped connecting portion, and the mounting base 102 encircling the outer periphery of the first main pipe 100. The mounting base 102 can be made of non-metallic materials, making it more suitable for working environments sensitive to metallic foreign objects.

[0085] Please continue to refer to this. Figure 1 In this embodiment of the application, the material screening and interception device further includes a fifth connecting flange 111 for connecting to the material inflow pipeline and a sixth connecting flange (not shown in the figure) for connecting to the material outflow pipeline. The fifth connecting flange 111 and the sixth connecting flange have different diameters.

[0086] As set above, the material screening and interception device of this application adopts a variable diameter flange to adapt to application scenarios with different sizes of material inflow pipeline and material outflow pipeline.

[0087] In this embodiment, the second connecting pipe 104 includes a pipe body 1041 and two standard flanges 1042. The pipe body 1041 and the standard flanges 1042 are separate structures. The pipe body 1041 connects to the two standard flanges 1042. One standard flange 1042 is used to connect to the first main pipe 100, and the other standard flange 1042 is used to connect to the material outflow pipe. In other embodiments, the second connecting pipe 104 can be a one-piece molded structure.

[0088] Please continue to refer to this. Figure 1 In this embodiment of the application, the fifth connecting flange 111 is provided with a first connecting hole 111a, and the sixth connecting flange is provided with a second connecting hole. The width of at least one of the first connecting hole 111a and the second connecting hole gradually increases along its extension direction.

[0089] As set above, the fifth connecting flange 111 and the sixth connecting flange adopt an adjustable connecting hole design, which can adapt to the installation position of the connector with different hole spacing, improving the flexibility and compatibility of installation.

[0090] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A material screening and intercepting device, characterized in that, include: A first main pipe (100) and a screen (101), the screen (101) being connected to the first main pipe (100) and arranged along the cross-section of the first main pipe (100), the outer wall of the first main pipe (100) having a mounting seat (102) for mounting a vibrator. The first connecting pipe (103) and the second connecting pipe (104) are connected to the upper axial end of the first main pipe (100) and are used to connect to the material inflow pipe of the production equipment. The second connecting pipe (104) is connected to the lower axial end of the first main pipe (100) and is used to connect to the material outflow pipe of the production equipment. Both the first connecting pipe (103) and the second connecting pipe (104) are axially expandable. An elastic connector (105) is provided, wherein the two ends of the elastic connector (105) in the extension direction are connected to the two ends of the first connecting pipe (103) in the extension direction.

2. The material screening and intercepting device of claim 1, wherein, The material screening and interception device further includes connecting portions (1A) located at both ends of the extension direction of the first connecting pipe (103), and the elastic connector (105) includes an elastic element (1051) connected between the two connecting portions (1A).

3. The material screening and intercepting device of claim 2, wherein, The elastic connector (105) further includes: A connecting rod (1052) passes through the two connecting parts (1A), and an elastic element (1051) is fitted onto the connecting rod (1052) and clamped between the two connecting parts (1A); The limiting part (1053) is connected to both ends of the connecting rod (1052) in the axial direction, and the limiting part (1053) abuts against the outer wall of the connecting part (1A) at the same end.

4. The material screening and interception device according to claim 2, characterized in that, The material screening and interception device further includes: The second main pipe (106) is connected to the upper axial end of the first connecting pipe (103) and is used to connect with the material inflow pipeline. The peripheral wall of the second main pipe (106) is provided with an opening (106a). The cover is detachably connected to the opening (106a).

5. The material screening and intercepting device of claim 4, wherein, The first connecting pipe (103) and the second main pipe (106) are respectively provided with a first connecting flange (107) and a second connecting flange (108) at their respective ends close to each other. The first connecting pipe (103) and the second main pipe (106) are connected through the first connecting flange (107) and the second connecting flange (108). One of the first connecting flange (107) and the second connecting flange (108) forms one of the connecting parts (1A). The first connecting pipe (103) and the first main pipe (100) are respectively provided with a third connecting flange (109) and a fourth connecting flange (110) at their respective ends close to each other. The first connecting pipe (103) and the first main pipe (100) are connected through the third connecting flange (109) and the fourth connecting flange (110). One of the third connecting flange (109) and the fourth connecting flange (110) forms another connection part (1A).

6. A material screening and intercepting device according to any one of claims 1-5, characterized in that, The screen (101) is made of non-metallic material.

7. The material screening and intercepting device of claim 4, wherein, The inner walls of the first main pipe (100) and the second main pipe (106) have protective coatings.

8. A material screening and intercepting device according to any one of claims 1-5, characterized in that, The mounting base (102) is welded and fixed to the outer wall of the first main pipe (100); Alternatively, the mounting base (102) includes a base body and a U-shaped connecting portion, the base body being connected to the open end of the U-shaped connecting portion, and the mounting base (102) encircling the outer periphery of the first main pipe (100).

9. The material screening and interception device according to any one of claims 1-5, characterized in that, The material screening and interception device further includes a fifth connecting flange (111) for connecting to the material inflow pipeline and a sixth connecting flange for connecting to the material outflow pipeline, wherein the fifth connecting flange (111) and the sixth connecting flange have different diameters.

10. The material screening and intercepting device of claim 9, wherein, The fifth connecting flange (111) is provided with a first connecting hole (111a), and the sixth connecting flange is provided with a second connecting hole. The width of at least one of the first connecting hole (111a) and the second connecting hole gradually increases along its extension direction.

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