An automatic weighing device for platinum carbon catalyst packaging process

Abstract

The utility model belongs to the technical field of weighing device, concretely relates to an automatic weighing device for the packaging process of platinum -carbon catalyst. The device includes the casing, weighing module, clamping module, inert gas module and dust removal gas collection module. Weighing module and clamping module all are arranged in the casing, and weighing module is arranged at the bottom of casing, and the weighing module is placed with the packaging barrel for receiving the article to be weighed, clamping module is arranged in the middle of casing, and clamping module is located at the side of packaging barrel, the top of casing is provided with bunker, and bunker is located above packaging barrel, and inert gas module and dust removal gas collection module are connected with bunker respectively. The device can improve the weighing precision, and control the weighing fluctuation within 0.01g. The device can keep the oxygen concentration in the bunker less than 0.1%, avoiding the activity decrease of platinum -carbon catalyst. In addition, the device can reduce the material loss of platinum -carbon catalyst by setting the valve with anti -sticky coating and inert gas protection.

Description

Technical Field

[0001] This utility model belongs to the technical field of weighing devices, specifically relating to an automatic weighing device used in the packaging process of platinum-carbon catalysts. Background Technology

[0002] Platinum-carbon catalyst is a high-value-added nanomaterial characterized by low density, easy dust generation, and sensitivity to oxygen. In the packaging process, traditional manual weighing methods suffer from low efficiency, poor consistency, high material loss, and the risk of cross-contamination. While existing automatic weighing equipment can improve efficiency, it generally suffers from the following problems: (1) lack of inert gas protection, which may lead to oxidation and deactivation of the platinum-carbon catalyst upon contact with air; (2) open structure causing dust dispersion, which not only pollutes the environment but may also reduce the activity of the platinum-carbon catalyst; (3) insufficient weighing accuracy (±0.1g level) leading to measurement deviations; and (4) material sticking to valves causing cross-contamination between different products, affecting product quality. Therefore, there is an urgent need to develop a high-precision, sealed, low-loss automatic weighing device specifically for platinum-carbon catalyst packaging. Utility Model Content

[0003] The purpose of this invention is to provide an automatic weighing device for the packaging process of platinum-carbon catalysts, which can achieve high-precision weighing of platinum-carbon catalysts.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An automatic weighing device for the packaging process of platinum-carbon catalysts includes a shell, a weighing module, a clamping module, an inert gas module, and a dust collection module. Both the weighing module and the clamping module are housed within the casing; The weighing module is located at the bottom of the housing, and a packaging barrel for receiving the items to be weighed is placed on the weighing module. The clamping module is located in the middle of the shell and is located on the side of the packaging barrel; The top of the shell is provided with a hopper, and the hopper is located above the packaging barrel; The inert gas module and the dust collection module are respectively connected to the silo.

[0005] Furthermore, the weighing module includes a weighing sensor, a base is provided at the bottom of the weighing sensor, and an active shock absorber is configured on the base.

[0006] Furthermore, the clamping module includes a clamping component and a telescopic cylinder; a pressure sensor is disposed inside the clamping component; one end of the telescopic cylinder is connected to the clamping component, and the other end of the telescopic cylinder is connected to the housing.

[0007] Furthermore, the bottom of the hopper is provided with a discharge port, which is aligned with the packaging barrel, and a valve is provided on the discharge port.

[0008] Furthermore, the valve is configured as a double butterfly valve, and the valve body surface of the double butterfly valve is covered with an anti-stick coating.

[0009] Furthermore, the hopper is configured as a sealed structure, with a first interface, a second interface, and a filling port on the top of the hopper; the first interface is connected to the inert gas module; and the second interface is connected to the dust removal and suction module.

[0010] Furthermore, an observation window is provided on the side of the hopper.

[0011] Furthermore, the inert gas module includes a nitrogen cylinder, the output port of which is connected to the silo and the shell via pipes; an oxygen content detector for detecting the oxygen content in the silo is also installed on the silo.

[0012] Furthermore, the dust collection module includes a filter, and the filter is connected to a negative pressure suction device.

[0013] Furthermore, it also includes a control device, which is connected to the weighing module, clamping module, inert gas module, dust collection module, and valves.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) Anti-oxidation design: The inert gas module can keep the oxygen concentration in the silo less than 0.1%, avoiding the decline in the activity of the platinum-carbon catalyst; (2) Anti-pollution design: The silo sealing structure and filter dust collection greatly reduce the dust concentration in the workshop and improve the working environment; (3) Improve weighing accuracy and control the weighing fluctuation within ±0.01g; (4) Material saving: The valve anti-stick coating and nitrogen protection reduce the material loss of platinum-carbon catalyst. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram illustrating the structural principle of one embodiment of the automatic weighing device for the packaging process of platinum-carbon catalysts according to this utility model. Figure 2 This is a schematic diagram illustrating the structural principle of another embodiment of the automatic weighing device for the packaging process of platinum-carbon catalysts according to this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1-Shell, 11-Hopper, 111-Discharge port, 112-First valve, 113-First interface, 114-Second interface, 115-Injection port, 116-Observation window, 117-First pipe, 118-Second pipe, 119-Third pipe, 120-Second valve, 2-Weighing module, 21-Weighing sensor, 22-Base, 3-Clamping module, 31-Clamping component, 32-Electric cylinder, 4-Inert gas module, 41-Nitrogen cylinder, 42-Oxygen content detector, 5-Dust collection module, 51-Filter, 6-Packaging drum, 7-Control device. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] like Figure 1 As shown, an automatic weighing device for the packaging process of platinum-carbon catalysts includes a housing 1, a weighing module 2, a clamping module 3, an inert gas module 4, and a dust collection module 5. The weighing module 2 and the clamping module 3 are both disposed within the housing 1. The weighing module 2 is located at the bottom of the housing 1, and a packaging drum 6 for packing items to be weighed is placed on the weighing module 2. The clamping module 3 is located in the middle of the housing 1 and is situated on the side of the packaging drum 6. A hopper 11 is located at the top of the housing 1, above the packaging drum 6. The inert gas module 2 and the dust collection module 3 are respectively connected to the hopper 11.

[0020] Specifically, the weighing module 2 includes a weighing sensor 21 with a weighing range of 0~5kg and a resolution of ±0.01g. A base 22 is provided at the bottom of the weighing sensor 21, and the base 22 can be connected to the housing 1. The base 22 is made of marble and is equipped with an active shock absorber, so it can effectively isolate ground vibration interference during weighing.

[0021] The clamping module 3 includes a clamping member 31 and an electric cylinder 32. The clamping member 31 is shaped like a three-jaw manipulator, with a clamping diameter ranging from 50 to 200 mm. A pressure sensor can be further configured on the clamping member 31 to prevent excessive clamping from deforming the packaging drum 6. One end of the electric cylinder 32 is connected to the clamping member 31, and the other end is connected to the housing 1. When the clamping member 31 contacts the packaging drum 6 to clamp it, the pressure sensor can provide a feedback signal, causing the electric cylinder 32 to stop working, thereby avoiding excessive clamping force that could damage the packaging drum 6, and achieving the purpose of adaptively adjusting the clamping force of the clamping member 31. In this embodiment, two clamping modules 3 are configured, arranged on both sides of any diameter of the packaging drum 6. The two clamping modules 3 can push the packaging drum 6 to the middle of the weighing sensor 21, ensuring that the packaging drum 6 is directly below the hopper 11.

[0022] The hopper 11 is sealed to the shell 1, and the hopper 11 is a sealed structure. The hopper body of the hopper 11 is made of 316L stainless steel, and its inner surface is mirror-polished with a surface roughness Ra value of no more than 0.4μm. A discharge port 111 is provided at the bottom of the hopper 11, aligned with the packaging drum 6. A first valve 112 is installed on the discharge port 111. The first valve 112 is a double butterfly valve with an opening and closing time of no more than 0.5 seconds and a leakage rate of less than 0.001%. The valve body surface of the first valve 112 is coated with an anti-stick coating, such as the commonly used polytetrafluoroethylene coating. The first valve 112 serves two purposes: sealing and controlling unloading during discharge, and preventing platinum-carbon catalyst from adhering to the first valve 112, affecting accuracy and sealing. Furthermore, by using an anti-stick coating, the first valve 112 does not adhere to the platinum-carbon catalyst, preventing cross-contamination when weighing other materials. A first interface 113, a second interface 114, and a filling port 115 are provided on the top of the silo 11. The first interface 113 is connected to the inert gas module 4 through a first pipe 117, and the second interface 114 is connected to the dust removal and suction module 5 through a second pipe 118. Platinum-carbon catalyst is injected into the silo 11 through the filling port 115. A transparent observation window 116 is provided on the side of the silo 11, which allows for real-time observation of the conditions inside the silo 11.

[0023] The inert gas module 4 includes a nitrogen cylinder 41 and an oxygen content detector 42. The nitrogen cylinder 41 is connected to a first interface 113 via a first pipe 117, thereby delivering nitrogen into the silo 11. The nitrogen cylinder 41 is also connected to the housing 1 via a third pipe 119, located below the silo 11, thereby delivering nitrogen into the housing 1. Second valves 120 are installed on the first pipe 117, the second pipe 118, and the third pipe 119. The oxygen content detector 42 is connected to the silo 11 and is used to detect the oxygen content within the silo 11. The inert gas module 4 maintains the oxygen concentration in the silo 11 and the housing 1 at a constant level of less than 0.1%, effectively preventing the oxidation of the platinum-carbon catalyst.

[0024] The dust collection module 5 includes a filter 51, which is connected to a negative pressure suction mechanism. The filter 51 is connected to a second interface 114 via a second pipe 118. Through the negative pressure suction mechanism, the filter 51 effectively collects overflow dust from the hopper 11, preventing dust contamination of the operating space. Simultaneously, the dust collection module 5 ensures pressure balance inside and outside the hopper 11. The filter 51 has an adjustable flow rate of 5~30 m³ / h and operates at a noise level of less than 65 dB.

[0025] like Figure 2 As shown, this utility model also includes a control device 7, which integrates a touch control screen. The control device 7 is connected to the weighing sensor 21, the clamping member 31, the electric cylinder 32, the oxygen content detector 42, the filter 51, and the first valve 112, and controls the operation of each mechanism.

[0026] The weighing device of this utility model operates as follows: First, place the packaging drum 6 on the weighing module 2, with the housing 1 and base 22 sealed together. Open the first valve 112 and all the second valves 120, and through the coordinated action of the nitrogen cylinder 41 and filter 51, purge nitrogen into the housing 1 and hopper 11 to replace the air until the oxygen concentration in the housing 1 and hopper 11 is less than 0.1%. Then, close the first valve 112 and the second valves 120 on the third pipe 119. Next, inject platinum-carbon catalyst into the sealed hopper 11. The packaging drum 6 is clamped between the weighing sensors 21 by the clamping module 3. Simultaneously, after the packaging drum 6 is positioned directly below the discharge port 111, the clamping member 31 moves slightly backward to prevent it from contacting the packaging drum 6 and affecting the weighing, while preventing the packaging drum 6 from tilting. Finally, according to the set weight of the platinum-carbon catalyst to be packaged, open the first valve 112, and the platinum-carbon catalyst falls from the hopper 11 into the packaging drum 6. When the specified weight is reached, the first valve 112 closes. The inert gas module 4 and the dust collection module 5 operate continuously to prevent oxidation of the platinum-carbon catalyst and collect spilled dust. Tests showed that the average error for continuously dispensing 100 drums was only 0.01g, the material loss rate was 0.38%, and the oxygen concentration remained consistently below 0.1%, significantly superior to traditional processes.

[0027] This invention relates to a weighing device with a compact structure and convenient operation. It is particularly suitable for automatic weighing during the packaging process of platinum-carbon catalysts, solving the problems of precision control, oxidation protection, and material loss in the packaging process. Furthermore, this device is also applicable to other precious metal catalyst industries, achieving a quantitative dispensing loss rate of <0.5%, oxygen concentration of <0.1%, and a packaging efficiency of 30 seconds per barrel.

[0028] The present embodiment has now been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present invention. Of course, the above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the content of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention and should be protected by the present invention.

Claims

1. An automatic weighing device for the packaging process of platinum-carbon catalysts, characterized in that, It includes a housing, a weighing module, a clamping module, an inert gas module, and a dust collection module; Both the weighing module and the clamping module are housed within the casing; The weighing module is located at the bottom of the housing, and a packaging barrel for receiving the items to be weighed is placed on the weighing module. The clamping module is located in the middle of the shell and is located on the side of the packaging barrel; The top of the shell is provided with a hopper, and the hopper is located above the packaging barrel; The inert gas module and the dust collection module are respectively connected to the silo.

2. The automatic weighing device for the packaging process of platinum-carbon catalyst according to claim 1, characterized in that, The weighing module includes a weighing sensor, and a base is provided at the bottom of the weighing sensor. The base is equipped with an active shock absorber.

3. An automatic weighing device for the packaging process of platinum-carbon catalysts according to claim 1, characterized in that, The clamping module includes a clamping component and a telescopic cylinder; A pressure sensor is installed inside the clamping component; One end of the telescopic cylinder is connected to the clamping component, and the other end of the telescopic cylinder is connected to the housing.

4. An automatic weighing device for the packaging process of platinum-carbon catalysts according to claim 1, characterized in that, The bottom of the hopper is equipped with a discharge port, which is aligned with the packaging barrel, and a valve is installed on the discharge port.

5. An automatic weighing device for the packaging process of platinum-carbon catalysts according to claim 4, characterized in that, The valve is configured as a double butterfly valve, and the valve body surface of the double butterfly valve is covered with an anti-stick coating.

6. An automatic weighing device for the packaging process of platinum-carbon catalysts according to claim 1, characterized in that, The hopper is configured as a sealed structure, and the top of the hopper is provided with a first interface, a second interface, and a filling port; The first interface is connected to the inert gas module; The second interface connects to the dust removal and air extraction module.

7. An automatic weighing device for the packaging process of platinum-carbon catalysts according to claim 1, characterized in that, The hopper is also equipped with an observation window on its side.

8. An automatic weighing device for the packaging process of platinum-carbon catalysts according to claim 1, characterized in that, The inert gas module includes a nitrogen cylinder, and the outlet of the nitrogen cylinder is connected to the hopper and the shell through pipes. An oxygen content detector is also installed on the silo to detect the oxygen content inside the silo.

9. An automatic weighing device for the packaging process of platinum-carbon catalysts according to claim 1, characterized in that, The dust collection module includes a filter, and the filter is connected to a negative pressure suction device.

10. An automatic weighing device for the packaging process of platinum-carbon catalysts according to claim 4, characterized in that, It also includes a control device, which is connected to the weighing module, clamping module, inert gas module, dust collection module and valves respectively.

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