SCR denitration catalyst mud plasticity detection device

Abstract

The utility model relates to detection equipment technical field, and disclose a kind of SCR denitration catalyst mud plasticity detection device, including workbench, the top of workbench is equipped with base, shaft sleeve and pin shaft in proper order, shaft sleeve is assembled on base by screw thread connection, pin shaft is located inside shaft sleeve, the bottom of base is equipped with lifting platform, lifting assembly is equipped on workbench, lifting assembly is used to drive lifting platform to move up and down;The center of base and lifting platform is all provided with the cylindrical through hole of intercommunication, the cylindrical through hole of both is embedded and is equipped with plug core, the inside center of plug core is equipped with the discharge hole of up and down penetration, the discharge hole is equipped with the plug of being connected with workbench directly below, the outer diameter of plug is compatible with discharge hole. The utility model simplifies operation process, improves the sealing reliability and service life of device;Replace traditional manual observation recording mode, eliminate subjective observation error, make plasticity detection result more scientific and comparable.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a device for testing the plasticity of SCR denitrification catalyst sludge. Background Technology

[0002] With increasingly stringent requirements for industrial waste gas treatment, selective oxidation-reduction (SCR) denitrification technology has become a core technology for nitrogen oxide emission reduction. Among these technologies, honeycomb denitrification catalysts are widely used due to their large specific surface area and excellent thermal shock resistance. In the production process of honeycomb denitrification catalysts, mud mixing is a crucial pre-process for molding and extrusion. Mud plasticity, as a core performance indicator, directly determines the success rate of subsequent molding and extrusion and the stability of product quality.

[0003] Existing clay plasticity testing equipment, such as the technical solution disclosed in CN206399762U, employs a combination structure of a perforated first bolt and a non-perforated second bolt. Switching between clay pre-compression uniformity and extrusion testing is achieved by changing different bolts. However, this structure has significant drawbacks: firstly, each test requires repeated disassembly and replacement of the bottom bolt, a cumbersome process. Frequent disassembly and assembly can lead to wear on the threaded mating surfaces, uneven stress, and ultimately, stripping failure, affecting the device's sealing performance and shortening its lifespan. Secondly, the clay extrusion state relies on manual observation and recording, making it difficult to accurately capture key data at the moment of extrusion, resulting in significant subjective errors and insufficient reliability of the test results.

[0004] Therefore, those skilled in the art urgently need to develop a device for testing the plasticity of SCR denitrification catalyst sludge. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for detecting the plasticity of SCR denitrification catalyst sludge.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an SCR denitrification catalyst sludge plasticity testing device, comprising a workbench, a base, a bushing and a pin arranged sequentially above the workbench, the bushing being threadedly assembled on the base, the pin being located inside the bushing, a lifting platform being provided at the bottom of the base, and a lifting assembly being provided on the workbench, the lifting assembly being used to drive the lifting platform to move up and down; Both the base and the lifting platform have cylindrical through holes at their centers. The two cylindrical through holes are connected, and the diameter of the cylindrical through hole of the lifting platform is larger than that of the cylindrical through hole of the base. A plug is embedded in the cylindrical through holes of both. The center of the plug has a discharge hole that runs vertically through the center. A plug is located directly below the discharge hole. The plug is connected to the upper surface of the workbench, and the outer diameter of the plug is adapted to the discharge hole.

[0007] Preferably, the bottom of the lifting platform is provided with symmetrical sliding tracks, and the two tracks slide on a slide plate. The top of the slide plate contacts the bottom of the plug core, and a groove is provided on the worktable directly below the sliding track.

[0008] Preferably, a pressure sensor is embedded in the upper surface of the slide plate, and the pressure sensor is located directly below the discharge hole.

[0009] Preferably, the plug core is connected to the base and the lifting platform by a threaded connection.

[0010] Preferably, the lifting assembly includes lead screws rotatably disposed at the four corners of the worktable. The upper part of each of the four lead screws passes through the lifting platform and is threadedly connected. The interior of the worktable is a hollow structure. The lower part of the four lead screws extends into the worktable and is connected to the driven teeth respectively. The center of each of the four driven teeth is provided with a driving tooth, which meshes with the four driven teeth respectively.

[0011] Preferably, the workbench has four support legs at its bottom corners and a drive motor at the bottom center, with the output end of the drive motor extending into the workbench and connected to the drive gear.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The operation process is simplified by optimizing the matching structure of the plug and discharge hole and the linkage design of the lifting platform. The switching between mud pre-compression sealing and extrusion testing can be completed without replacing the bottom bolts, completely solving the problem of cumbersome traditional bolt replacement operations. At the same time, it avoids wear and uneven stress caused by repeated disassembly and assembly of threads, effectively preventing stripping failure and improving the sealing reliability and service life of the device. The design of precise alignment between the pressure sensor and the discharge hole replaces the traditional manual observation and recording method, eliminating subjective observation errors and making the plasticity test results more scientific and comparable. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a front view of the structural cross-section of the present invention. Figure 1 ; Figure 3 This is a front view of the structural cross-section of the present invention. Figure 2 ; Figure 4 This is a diagram showing the internal connection relationships of the workbench described in this utility model; Figure 5 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 6 for Figure 3 Enlarged view of the structure at point B in the middle; Figure 7 This is an overall structural diagram of the plug core described in this utility model.

[0014] In the diagram: 1-Workbench; 2-Screw; 3-Lifting platform; 4-Base; 5-Sleeve; 6-Pin; 7-Outrigger; 8-Driven gear; 9-Drive gear; 10-Drive motor; 11-Plug; 12-Plug; 13-Slide rail; 14-Slide groove; 15-Slide plate; 16-Pressure sensor. Detailed Implementation

[0015] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please see Figures 1-7This utility model provides an embodiment: a plasticity testing device for SCR denitrification catalyst sludge, including a workbench 1, with support legs 7 at the four corners of the bottom of the workbench 1, and the interior of the workbench 1 is a hollow cavity structure. A base 4, a bushing 5, and a pin 6 are arranged sequentially on the top of the workbench 1. The bushing 5 is threadedly assembled onto the base 4, and the pin 6 is located inside the bushing 5. The bottom end of the pin 6 is an arc surface structure. A lifting platform 3 is provided at the bottom of the base 4, and the base 4 and the lifting platform 3 are fixedly connected by bolts. A lifting assembly is provided on the workbench 1, which is used to drive the lifting platform 3 to move smoothly in the vertical direction.

[0019] Both the base 4 and the lifting platform 3 have cylindrical through holes in their centers. The two cylindrical through holes are connected vertically, and the diameter of the cylindrical through hole of the lifting platform 3 is larger than that of the cylindrical through hole of the base 4. A plug core 11 is embedded in the cylindrical through holes of both. The shape and structure of the plug core 11 are adapted to the two cylindrical through holes. The plug core 11 is connected to the base 4 and the lifting platform 3 by threads. A sealing ring is fitted at the threaded connection between the plug core 11 and the base 4 and the lifting platform 3 to prevent mud leakage.

[0020] The plug core 11 has a discharge hole that runs vertically through the center. A plug 12 is located directly below the discharge hole. The plug 12 is detachably connected to the upper surface of the workbench 1 by bolts. The plug 12 is at the same height as the discharge hole, and the outer diameter of the plug 12 is interference-fitted with the inner diameter of the discharge hole to achieve sealing of the discharge hole.

[0021] The bottom of the lifting platform 3 is provided with symmetrical slides 13. The two slides 13 extend horizontally and have T-shaped openings inside. The slides 13 slide between the two slides 13 and slide plate 15 slides. The slide plate 15 has T-shaped openings on both sides and limit blocks (not marked in the figure) at both ends of the T-shaped openings to limit the sliding stroke of the slide plate 15.

[0022] A groove 14 is provided on the upper surface of the workbench 1, directly below the slide rail 13. The groove 14 slides in the same direction as the slide plate 15 to avoid the movement trajectory of the slide plate 15. A pressure sensor 16 is embedded in the upper surface of the slide plate 15. The detection end of the pressure sensor 16 is aligned with the lower part of the discharge hole. The pressure sensor 16 is connected to a data acquisition module through a wire. The data acquisition module is electrically connected to a display terminal installed on the side of the workbench 1 to display the detection data in real time (this is prior art and will not be described in detail).

[0023] The lifting assembly includes lead screws 2 rotatably mounted at the four corners of the worktable 1. All four lead screws 2 are arranged vertically, and their upper ends are threadedly connected to the lifting platform 3. The bottom ends of the lead screws 2 are rotatably connected to the bottom inner wall of the worktable 1 via bearings. The lower ends of the four lead screws 2 extend into the hollow cavity of the worktable 1 and are respectively fixedly fitted with driven teeth 8. The center of the four driven teeth 8 is provided with driving teeth 9, which mesh with the four driven teeth 8 respectively. The bottom center of the worktable 1 is provided with a drive motor 10. The output end of the drive motor 10 extends into the hollow cavity of the worktable 1 via a coupling and is coaxially fixedly connected with the drive teeth 9.

[0024] Working principle of this utility model: 1. Start the drive motor 10. The drive motor 10 drives the drive gear 9 to rotate. The drive gear 9 meshes and drives the four driven gears 8 to rotate synchronously, which in turn drives the four lead screws 2 to rotate synchronously. Through the threaded engagement between the lead screws 2 and the lifting platform 3, the lifting platform 3 and the base 4 are driven to move downward in the vertical direction. After adjusting until the lifting platform 3 contacts the worktable 1, turn off the drive motor 10. At this time, the plug 12 is located inside the discharge hole.

[0025] 2. Take the mud material after mixing and divide it into small pieces and put it into the bushing 5. After the mud material is placed, insert the pin 6 into the bushing 5 containing the mud material. After the placement is completed, start to pressurize the pin 6 in the first stage. The pressure starts from 0 and increases to 1000N. Control the displacement speed of the pressurizing end to 10mm / s. When the pressure reaches 1000N, continue to maintain the pressure at 1000N for 300s to ensure that the mud material in the bushing 5 is squeezed evenly.

[0026] 3. After pressurization is completed, reverse drive motor 10 is used to adjust lifting platform 3 to move upward. At this time, plug 12 is separated from discharge hole. Then slide slide plate 15 into slide rail 13 so that pressure sensor 16 is aligned directly below discharge hole of plug core 11. Then start the second pressurization. The pressure starts from 0 and the pressing speed is controlled at 5mm / s. The material is discharged uniformly from discharge hole and acts on pressure sensor 16 below. The pressure value at this moment is the test mud plastic extrusion pressure.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for testing the plasticity of SCR denitrification catalyst sludge, comprising a workbench, a base, a bushing, and a pin arranged sequentially above the workbench, the bushing being threadedly assembled onto the base, and the pin being located inside the bushing, characterized in that: The base is provided with a lifting platform at its bottom, and a lifting assembly is provided on the worktable. The lifting assembly is used to drive the lifting platform to move up and down. Both the base and the lifting platform have cylindrical through holes at their centers. The two cylindrical through holes are connected, and the diameter of the cylindrical through hole of the lifting platform is larger than that of the cylindrical through hole of the base. A plug is embedded in the cylindrical through holes of both. The center of the plug has a discharge hole that runs vertically through the center. A plug is located directly below the discharge hole. The plug is connected to the upper surface of the workbench, and the outer diameter of the plug is adapted to the discharge hole.

2. The SCR denitrification catalyst sludge plasticity testing device according to claim 1, characterized in that: The bottom of the lifting platform is provided with symmetrical slides on both sides, and a sliding plate is slidably placed between the two slides. The top of the sliding plate is in contact with the bottom of the plug core. A groove is opened directly below the slide on the worktable.

3. The SCR denitrification catalyst sludge plasticity testing device according to claim 2, characterized in that: A pressure sensor is embedded in the upper surface of the slide plate, and the pressure sensor is located directly below the discharge hole.

4. The SCR denitrification catalyst sludge plasticity testing device according to claim 1, characterized in that: The plug core is connected to the base and the lifting platform by a threaded connection.

5. The SCR denitrification catalyst sludge plasticity testing device according to claim 1, characterized in that: The lifting assembly includes lead screws rotatably mounted at the four corners of the worktable. The upper part of each of the four lead screws passes through the lifting platform and is threadedly connected. The interior of the worktable is a hollow structure. The lower part of the four lead screws extends into the worktable and is connected to the driven teeth respectively. The center of each of the four driven teeth is provided with a driving tooth, which meshes with the four driven teeth respectively.

6. The SCR denitrification catalyst sludge plasticity testing device according to claim 5, characterized in that: The workbench has four support legs at its bottom corners and a drive motor at the bottom center. The output end of the drive motor extends into the workbench and is connected to the drive gear.

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