Online detection device for uniformity of powdery mixed material

Abstract

The utility model discloses an on-line detection device for the uniformity of a powdery mixed material. The on-line detection device comprises a stirring bin and a stirring power source, a discharge hole capable of being opened and closed is formed in the stirring bin; a conveying guide rail is arranged below the discharging port, a sampling position and a detection position are arranged on the conveying guide rail at intervals, a detection container is arranged on the conveying guide rail in a sliding mode, the detection container is connected with a sliding driving source, and the sliding driving source is used for driving the detection container to slide between the sampling position and the detection position; the detection position is provided with an X-ray detection mechanism; when the detection container slides to the sampling position, the detection container receives the material discharged from the discharge port; when the detection container slides to the detection position, the X-ray detection mechanism detects the uniformity of the materials in the detection container; the X-ray detection mechanism is in control connection with the stirring power source. The device is convenient to use under actual working conditions, the uniformity of stirred materials can be monitored on line in real time, the running state of a stirring power source can be timely and accurately fed back and controlled, time waste caused by excessive stirring is avoided, the working efficiency is improved, and the stirring quality is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical testing in physics, and in particular relates to an online detection device for uniformity of powdery mixed materials. Background Art

[0002] At present, there are many applications for using radiation sources such as X-rays or gamma rays, in conjunction with detectors and computers, to detect the physical properties of the object being tested. For example, the detection devices disclosed in Chinese patent applications CN116223541A and CN220508713U use radiation sources to detect material density, and the detection devices disclosed in CN111380880A and CN109632838A use radiation sources to detect the uniformity of internal crystals or coatings. There are also detection devices disclosed in CN103278485A and CN113118060A use radiation sources to detect and judge the composition or external morphology of materials. These detection devices, when applied to online detection of the mixing uniformity of multiple powdered materials, have the problem of insufficient applicability and are not convenient for use in actual working conditions.

[0003] The mixing of various powdered materials is now mostly done by mechanical stirring. Although long-term stirring can be used to achieve the purpose of uniform mixing of materials, the uniformity of material mixing is not quantitatively determined, and long-term stirring also has problems such as excessive stirring time, high energy consumption, and low efficiency.

[0004] For the quantitative judgment of the mixing uniformity of various powdered materials, the existing methods include chemical analysis and spectral analysis. Chemical analysis methods include titration, chromatography, etc. Although the accuracy is very high, it is time-consuming and costly from sampling to analysis and conclusion, which is not conducive to online detection feedback. Spectral analysis uses the reflection, diffraction, absorption and other characteristics of different materials to the spectrum to quantitatively measure the content of various components in the material, such as X-ray diffraction spectrum, ultraviolet visible spectrum and infrared spectrum; among them, X-ray diffraction spectrum can accurately analyze the structure and composition of the material, but similar to chemical analysis, it has high time and economic costs; ultraviolet visible spectrum and infrared spectrum both detect material concentration through the absorption characteristics of characteristic substances to light in specific bands, which is convenient and fast, but the detection range is narrow, the accuracy is not high, and it is not suitable for sample detection in complex environments.

[0005] In view of this, the goal of optimization and improvement of this application is to design an online detection device suitable for the mixing uniformity of various powdered materials, which is convenient for use in actual working conditions and obtains accurate test results, provides real-time feedback and controls the mixing system, avoids excessive mixing and wastes time, and improves work efficiency. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide an online detection device for the uniformity of powdered mixed materials, so as to solve the technical problem that the existing devices are not convenient for use in actual working conditions, and to achieve the effects of easy use, timely and accurate feedback, and quality assurance and efficiency improvement.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] An online detection device for uniformity of powdery mixed materials.

[0009] It includes a mixing bin for containing materials;

[0010] A stirring power source is used to provide power for stirring the materials in the stirring bin;

[0011] The mixing bin is provided with an openable and closable discharge port;

[0012] A conveying guide rail is provided below the discharge port, and a sampling position and a detection position are provided on the conveying guide rail at intervals. A detection container is slidably provided on the conveying guide rail, and the detection container is connected to a sliding driving source, and the sliding driving source is used to drive the detection container to slide between the sampling position and the detection position; an X-ray detection mechanism is provided on the conveying guide rail at the detection position;

[0013] When the detection container slides to the sampling position, it receives the material discharged from the discharge port;

[0014] When the detection container slides to the detection position, the X-ray detection mechanism detects the uniformity of the material in the detection container;

[0015] The X-ray detection mechanism controls the connection to the stirring power source.

[0016] To further improve the above technical solution, the sampling point is located directly below the discharge port.

[0017] Furthermore, the detection container has a accommodating cavity, a filling port connected to the accommodating cavity is opened at the upper part of the detection container, a discharge hole connected to the accommodating cavity is opened at the lower part of the detection container, and a discharge cover for opening and closing the discharge hole is connected to the discharge hole.

[0018] Further, the accommodating cavity is a rectangular cavity vertically opened in the detection container, the upper end of the accommodating cavity is open, a pressure block having a cross-sectional shape consistent with the accommodating cavity is vertically slidably arranged in the accommodating cavity, the bottom surface of the pressure block is a horizontally arranged extrusion surface, and a lifting driving source for driving the pressure block to rise and fall is arranged on the detection container, and the lifting driving source is connected to the pressure block from the upper end opening of the accommodating cavity through a transmission mechanism;

[0019] The injection port is arranged on the side wall of the accommodating cavity, and is connected with an injection guide plate extending outward and obliquely upward.

[0020] Furthermore, in the cross section of the accommodating cavity, the injection port and the injection guide plate are located on the side where the long side of the accommodating cavity is located, and the length thereof corresponds to the long side of the accommodating cavity;

[0021] The lower end of the accommodating cavity is open and formed as the discharge hole.

[0022] Furthermore, the transmission mechanism includes a cross bar arranged in parallel and directly above the pressure block, the two ends of the cross bar are respectively connected to the pressure block by connecting rods extending vertically downward, and a driving rack extending vertically upward is fixedly connected to the middle of the cross bar. The lifting drive source is a lifting drive motor fixedly connected to the outside of the detection container. The output shaft of the lifting drive motor is horizontal and fixedly connected to a driving gear, and the driving gear is meshed with the driving rack.

[0023] Furthermore, the X-ray detection mechanism includes an X-ray source, an X-ray detector and a computer, the emission end of the X-ray source and the detection end of the X-ray detector are opposite to each other and are arranged at a distance; when the detection container slides to the detection position, the detection container is located between the emission end of the X-ray source and the detection end of the X-ray detector; the X-ray detector is electrically connected to the computer, and the computer controls the connection to the stirring power source.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. The online detection device for uniformity of powdered mixed materials of the utility model is convenient for use in actual working conditions, can monitor the uniformity of the mixed materials in real time online, timely and accurately feedback and control the operating status of the mixing power source, avoid excessive mixing and waste of time, improve work efficiency, and ensure mixing quality.

[0026] 2. The X-ray detection mechanism adopted by the utility model changes the intensity of X-rays after they pass through the material to be tested. If the material is mixed evenly, the detected X-ray intensity distribution is uniform. If the material is mixed unevenly, the X-ray intensity will have bright spots or dark spots. The X-ray transmission intensity at different positions of the material to be tested is obtained, and the material mixing uniformity is calculated according to the known model to determine whether the material mixing is uniform. The X-ray imaging time is short, and the X-ray detector has high sensitivity and high imaging efficiency, and can identify small changes in intensity, and can achieve high-precision material mixing unevenness detection.

[0027] 3. The on-line detection device for uniformity of powdered mixed materials of the utility model is particularly suitable for the detection of the mixing uniformity of materials under special working conditions such as flammable, explosive, and toxic materials. The aforementioned special working conditions are usually carried out in a room with certain requirements for mixing. By separately setting the sampling position and the detection position on the conveying rail in the device, the detection position can be extended to the outdoors or a separate detection room through the conveying rail, thereby improving the safety during necessary operations.

[0028] 4. The utility model aims at powdery mixed materials, and is equipped with a pressing block in the detection container, which can level and compact the powdery mixed materials entering the detection container with appropriate force without affecting the uniformity of material mixing, so that the powdery mixed materials are in a block shape corresponding to the containing cavity, which is more conducive to improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of an online detection device for uniformity of a powdery mixed material according to an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of a detection container and a transmission mechanism in an embodiment;

[0031] Figure 3 A schematic diagram of a pressing block and its transmission connection in an embodiment;

[0032] Among them, there are a detection container 1, an X-ray source 2, an X-ray detector 3, a computer 4, a lifting drive source 5, a pressure block 6, a cross bar 7, a connecting rod 8, a drive rack 9, a drive gear 10, a filling port 11, a conveying guide rail 12, a screw 13, a sliding drive source 14, a accommodating chamber 15, and a discharge cover 16. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0034] An online detection device for uniformity of powdery mixed materials includes a mixing bin for containing materials, a mixing power source for providing power for mixing materials in the mixing bin, and a mixing power source driving a mixing shaft and blades extending into the mixing bin; the mixing bin is provided with an openable and closable discharge port; a conveying guide is provided below the discharge port of the mixing bin, and the powdery mixed materials after long-term mixing are discharged from the discharge port, and the powdery mixed materials are discharged through the traveling cargo box on the conveying guide and conveyed to the next process. The above is the existing working condition structure, which is not shown in the attached drawings.

[0035] See also Figure 1The improvement content is as follows: the conveying guide rail 12 is extended, and the sampling position and the detection position can be set at intervals on the conveying guide rail 12. The detection container 1 is slidably provided on the conveying guide rail 12, and the detection container 1 is connected to the sliding drive source 14, and the sliding drive source 14 is used to drive the detection container 1 to slide between the sampling position and the detection position; an X-ray detection mechanism is provided at the detection position on the conveying guide rail 12; the X-ray detection mechanism controls the connection of the stirring power source. After stopping stirring, when the detection container 1 slides to the sampling position, it can receive the material discharged from the discharge port; when the detection container 1 slides to the detection position, the uniformity of the material in the detection container 1 can be detected by the X-ray detection mechanism; when the uniformity is qualified, the traveling cargo box on the conveying guide rail 12 can travel over to receive the discharge; when the uniformity is unqualified, the X-ray detection mechanism controls the stirring power source to continue stirring; after emptying the detection container 1, the uniformity of the sampled material can be continuously monitored by the device according to the set time length until the uniformity is qualified; emptying the detection container 1 can be implemented manually or in the manner described below. The device is convenient for use in actual working conditions, and can monitor the uniformity of the mixed materials online in real time, provide timely and accurate feedback and control the operating status of the mixing power source, avoid wasting time due to excessive mixing, improve work efficiency, and ensure mixing quality.

[0036] During implementation, the sampling position and the unloading position undertaken by the traveling cargo box can be set separately, but the discharge port needs to be connected to different discharge pipes for corresponding discharge. To simplify the structure, the sampling position is the original unloading position, and the sampling position is located directly below the discharge port. The traveling cargo box on the conveying guide rail 12 is suspended at other positions other than the sampling position. After the uniformity test of the material sampled by the detection container 1 is qualified (at this time, the detection container 1 is located at the detection position), the sampling position is vacated, and the traveling cargo box can go to this position to undertake the discharge.

[0037] Please continue to see Figure 1 , Figure 2 The detection container 1 has a accommodating cavity 15, a material injection port 11 connected to the accommodating cavity 15 is opened at the upper part of the detection container 1, a material discharge hole connected to the accommodating cavity 15 is opened at the lower part of the detection container 1, and a material discharge cover 16 for opening and closing the material discharge hole is connected to the material discharge hole.

[0038] In this way, it is convenient for the injection port 11 to receive the material discharged from the discharge port; it is also convenient to empty it after each sampling and testing, so as to prepare for the next sampling and testing.

[0039] Specifically, the accommodating chamber 15 is a rectangular chamber vertically opened in the detection container 1, the upper end of the accommodating chamber 15 is open, and a pressure block 6 with the same cross-sectional shape as the accommodating chamber 15 is vertically slidably arranged in the accommodating chamber 15, and the bottom surface of the pressure block 6 is a horizontally arranged extrusion surface. A lifting drive source 5 for driving the pressure block 6 to rise and fall is provided on the detection container 1, and the lifting drive source 5 is connected to the pressure block 6 from the upper open end of the accommodating chamber 15 through a transmission mechanism; the injection port 11 is opened on the side wall of the accommodating chamber 15, and the injection port 11 is connected to an injection guide plate extending outward and obliquely upward; when the detection container 1 slides to the sampling position, the injection guide plate is located directly below the discharge port; when the lifting drive source 5 drives the pressure block 6 to rise to a high position, the pressure block 6 is higher than the injection port 11, and when the lifting drive source 5 drives the pressure block 6 to descend, the pressure block 6 passes through the injection port 11 in the vertical direction and moves downward.

[0040] In this way, the discharge cover 16 is closed during sampling and testing, and the pressing block 6 can be used to squeeze the sampled material with appropriate force before testing to make the material flat, without changing the uniformity, and to ensure that the uniformity test is more accurate; after the test, the discharge cover 16 is opened, and the pressing block 6 is lowered again to discharge the material.

[0041] In the cross section of the accommodating chamber 15, the injection port 11 and the injection guide plate are located on the side where the long side of the accommodating chamber 15 is located, and the length corresponds to the long side of the accommodating chamber 15; the lower end of the accommodating chamber 15 is open and formed as the discharge hole. In this way, the detection container 1 is more even and flat when feeding, and the material can be discharged more cleanly and thoroughly; during implementation, the discharge cover 16 is in the shape of a plate, and a sliding installation groove can be correspondingly opened on the detection container 1, so that the discharge cover 16 is slidably connected to the detection container 1 and driven by a telescopic cylinder (not shown in the figure). The lifting drive source 5 can also adopt a telescopic cylinder, the output end of which is connected to the telescopic connecting rod as a transmission mechanism and drives the pressure block 6.

[0042] See also Figure 2 , Figure 3 In this embodiment, the transmission mechanism includes a cross bar 7 arranged in parallel and just above the pressing block 6, and the cross bar 7 is extended along the width direction of the accommodating chamber 15. The two ends of the cross bar 7 are respectively connected to the pressing block 6 through a connecting rod 8 extending vertically downward. A driving rack 9 extending vertically upward is fixedly connected to the middle of the cross bar 7. The lifting drive source 5 is a lifting drive motor fixedly connected to the outside of the detection container 1. The output shaft of the lifting drive motor is horizontal and fixedly connected with a driving gear 10, and the driving gear 10 is meshed with the driving rack 9; during implementation, a bracket for keeping the driving rack 9 meshed with the driving gear 10 is provided on the detection container 1 (not shown in the figure, the bracket can be a backing plate extending upward from the side of the detection container 1 and leaning against the back side of the driving rack 9), the driving rack 9 and the bracket are vertically slidably matched, and the lifting drive motor can also be fixed on the bracket.

[0043] Correspondingly, the discharge port can be in the form of a discharge channel extending downward, and its cross-section and mouth have a shape corresponding to the end portion of the injection guide plate of the injection port 11, which can well take into account sampling, discharging and unloading, and does not interfere with the transmission mechanism.

[0044] Please continue to see Figure 1 The X-ray detection mechanism includes an X-ray source 2, an X-ray detector 3 and a computer 4. The emitting end of the X-ray source 2 and the detecting end of the X-ray detector 3 are opposite to each other and spaced apart, so that an X-ray penetration area is formed between the X-ray source 2 and the X-ray detector 3. When the detection container 1 slides to the detection position, the accommodating cavity 15 of the detection container 1 is located between the emitting end of the X-ray source 2 and the detecting end of the X-ray detector 3, that is, within the X-ray penetration area. The X-ray detector 3 is electrically connected to the computer 4 and is connected to the stirring power source through the control of the computer 4.

[0045] The computer 4 can analyze the signal received from the X-ray detector 3 to obtain the X-ray intensity value, and then determine the uniformity of the material in the containing cavity 15 and control the start and stop status of the stirring power source accordingly.

[0046] In order to ensure the accuracy of detection, the thickness of the accommodating cavity 15 should not be too large. The overall structure is a plate-like structure as shown in the figure, which is perpendicular to the direction of the rays emitted by the X-ray source 2. In the direction of the rays emitted by the X-ray source 2, the inner cavity thickness of the accommodating cavity 15 is consistent, and the wall thickness of the accommodating cavity 15 is consistent.

[0047] The sliding drive source 14 can also use a telescopic cylinder to telescopically connect the detection container 1. In this embodiment, the conveying guide rail 12 uses two horizontal and parallel guide rails. The detection container 1 is respectively slidably matched with the two guide rails and can slide along the extension direction of the guide rails. The sliding drive source 14 is a fixed rotary drive motor. The rotary drive motor drives the screw 13 connected between the two guide rails. The screw 13 cooperates with the internal threaded hole horizontally penetrating the lower part of the detection container 1 to form a screw transmission structure. The internal threaded hole is staggered with the accommodating cavity 15; the detection position is located between the sampling position and the sliding drive source 14, and the X-ray source 2 and the X-ray detector 3 are located on the outside of the two guide rails and are respectively connected to the guide rails on the corresponding sides through connectors (not shown in the figure); during implementation, the detection The bottom of the container 1 can be widened to facilitate the sliding fit between the two sides of the bottom and the inner sides of the two guide rails (specifically, the arc-shaped convex and concave structures can be matched as shown in the figure to achieve sliding fit and rotation control), the accommodating chamber 15 passes downward, and the sliding installation groove for installing the discharge cover 16 can also be opened in the widened bottom of the detection container 1; the free end of the screw 13 can be rotatably connected to a support seat (not shown in the figure) provided between the two guide rails, and the support seat is connected to the middle of the upper surface of a bottom plate, and the upper surface of the bottom plate is connected to the lower surfaces of the two guide rails, and the traveling cargo box on the conveying guide rail 12 is rolled on the guide rail by rollers with limited convex edges on the inner or outer sides, and will not interfere with each other, and share the sampling position.

[0048] During implementation, the detection container, the injection port, and the injection guide plate can be made of an integrally formed glass material, the angle between the injection guide plate and the horizontal direction is 45°, and the pressing block can be made of rubber material.

[0049] For ease of understanding, the control and use process of this device is further introduced as follows:

[0050] The controller or the computer 4 controls the connection of the stirring power source, the sliding drive source 14, the lifting drive source 5, the traveling cargo box drive source, the X-ray source 2, and the opening and closing of the discharge hole and the discharge port. The time interval for online uniformity detection is set on the computer 4, and data acquisition and control software, X-ray intensity distribution calculation software, etc. are installed.

[0051] The traveling cargo box is suspended on the side of the sampling position away from the detection position on the conveying guide rail 12; after the powdered mixed material in the mixing bin is stirred for the set time, the stirring power source stops; the lifting drive source 5 drives the pressing block 6 to rise and be higher than the injection port 11, and the sliding drive source 14 drives the detection container 1 to slide to the sampling position, and the upper end of the injection guide plate of the injection port 11 is directly opposite to the lower end of the discharge port; the discharge port of the mixing bin is controlled to open and discharge, and after a proper amount of material enters the containing chamber 15, the discharge port of the mixing bin is controlled to be closed, and the sampling of the detection container 1 is completed; the lifting drive source 5 drives the pressing block 6 to descend and squeezes the material in the containing chamber 15 with appropriate force to make it flat; the sliding drive source 14 drives the detection container 1 Slide to the detection position; the X-ray source 2 emits X-rays of uniform intensity, which pass through the accommodating cavity 15 and are detected and received by the X-ray detector 3 to form a two-dimensional X-ray intensity distribution diagram. The computer 4 analyzes the data from the X-ray detector 3 in real time to obtain the X-ray transmission intensity of different positions of the material to be tested. The X-ray intensity distribution calculation software can quantify the X-ray intensity values ​​at different positions of the material to be tested. If the materials are mixed evenly, the difference in the X-ray intensity transmitted at different spatial positions of the material to be tested is within the set threshold. If the materials are mixed unevenly, the difference in the X-ray intensity transmitted at different spatial positions of the material to be tested is outside the set threshold, thereby judging whether the material mixing is uniform.

[0052] If the material mixing uniformity is determined to be qualified, the traveling cargo box is controlled to move to the sampling position and the discharge port is controlled to discharge the material. After the traveling cargo box receives the loaded material, it leaves the sampling position in the direction away from the detection position and sends the material to the next process; the discharge cover 16 is controlled to slide open, and the lifting drive source 5 drives the pressing block 6 to continue to descend until all the materials in the accommodating chamber 15 are discharged, and then drives the pressing block 6 to rise to an initial position higher than the injection port 11, and the discharge cover 16 slides closed to prepare for the next online detection after mixing.

[0053] If it is determined that the material mixing uniformity is unqualified, the discharge cover 16 is controlled to slide open, and the lifting drive source 5 drives the pressing block 6 to continue to descend until all the materials in the accommodating chamber 15 are discharged, and then drives the pressing block 6 to rise to an initial position higher than the injection port 11, and the discharge cover 16 slides closed; at the same time, the stirring power source is controlled to start again, and stops again after completing the stirring for the set time, and the above-mentioned online detection is repeated until the uniformity is qualified.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. An online detection device for uniformity of powdery mixed materials, It includes a mixing bin for containing materials; A stirring power source is used to provide power for stirring the materials in the stirring bin; The mixing bin is provided with an openable and closable discharge port; Features: A conveying guide rail is provided below the discharge port, and a sampling position and a detection position are provided on the conveying guide rail at intervals. A detection container is slidably provided on the conveying guide rail, and the detection container is connected to a sliding driving source, and the sliding driving source is used to drive the detection container to slide between the sampling position and the detection position; an X-ray detection mechanism is provided on the conveying guide rail at the detection position; When the detection container slides to the sampling position, it receives the material discharged from the discharge port; When the detection container slides to the detection position, the X-ray detection mechanism detects the uniformity of the material in the detection container; The X-ray detection mechanism controls the connection to the stirring power source.

2. According to claim 1, a powdery mixed material uniformity online detection device is characterized in that: The sampling position is located directly below the discharge port.

3. The on-line detection device for uniformity of powdery mixed materials according to claim 2, characterized in that: The detection container has a containing cavity, a material injection port connected to the containing cavity is opened at the upper part of the detection container, a material discharge hole connected to the containing cavity is opened at the lower part of the detection container, and a material discharge cover for opening and closing the material discharge hole is connected to the material discharge hole.

4. The on-line detection device for uniformity of powdery mixed materials according to claim 3, characterized in that: The accommodating cavity is a rectangular cavity vertically opened in the detection container, the upper end of the accommodating cavity is open, a pressing block having a cross-sectional shape consistent with the accommodating cavity is vertically slidably arranged in the accommodating cavity, the bottom surface of the pressing block is a horizontally arranged extrusion surface, and a lifting driving source for driving the pressing block to rise and fall is arranged on the detection container, and the lifting driving source is connected to the pressing block from the upper end of the accommodating cavity through a transmission mechanism; The injection port is arranged on the side wall of the accommodating cavity, and is connected with an injection guide plate extending outward and obliquely upward.

5. The on-line detection device for uniformity of powdery mixed materials according to claim 4, characterized in that: On the cross section of the accommodating cavity, the injection port and the injection guide plate are located on the side where the long side of the accommodating cavity is located, and the length corresponds to the long side of the accommodating cavity; The lower end of the accommodating cavity is open and formed as the discharge hole.

6. The on-line detection device for uniformity of powdery mixed materials according to claim 4, characterized in that: The transmission mechanism includes a cross bar arranged in parallel and just above the pressure block, the two ends of the cross bar are connected to the pressure block respectively through connecting rods extending vertically downward, and a driving rack extending vertically upward is fixedly connected to the middle of the cross bar. The lifting drive source is a lifting drive motor fixedly connected to the outside of the detection container. The output shaft of the lifting drive motor is horizontal and fixedly connected with a driving gear, and the driving gear is meshed with the driving rack.

7. An online detection device for uniformity of powdery mixed materials according to any one of claims 1 to 6, characterized in that: The X-ray detection mechanism includes an X-ray source, an X-ray detector and a computer. The emitting end of the X-ray source and the detecting end of the X-ray detector are opposite to each other and are arranged at a distance. When the detection container slides to the detection position, the detection container is located between the emitting end of the X-ray source and the detecting end of the X-ray detector. The X-ray detector is electrically connected to the computer, and the computer controls the connection with the stirring power source.

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