Valve bag powder leakage detection equipment

Abstract

The utility model discloses powder leakage detection equipment for a valve bag, which comprises a compression sealing device and a powder leakage detection device, wherein the compression sealing device comprises a first compression assembly and a second compression assembly which are arranged on a rack, and is used for compressing a bag piece valve port of the valve bag; the self-suction material spraying device comprises a self-suction spray gun installed on the inner side of the machine frame, and the self-suction spray gun is used for compressing air through a pipeline and filling the valve bag with self-suction powder. According to the utility model, the bag piece valve port of the valve bag is compressed and sealed through the first compression assembly and the second compression assembly, the pressure powder filling process of the full-automatic filling machine is simulated in cooperation with the self-suction spray gun, and the valve bag is flapped after filling is completed to detect whether the valve bag leaks or not. The related quality conditions of gluing, bonding and the like of the current batch of valve bags can be quickly and intuitively judged, so that the production process scheme corresponding to the valve bags is adjusted in time.

Description

Technical Field

[0001] This utility model relates to the technical field of powder leakage detection equipment, specifically to a valve bag powder leakage detection equipment. Background Technology

[0002] Valve bags are a common type of packaging container. Their opening structure is usually cylindrical. During filling, materials are filled into the bag through the opening. After filling, the opening is sealed by folding, sewing, or heating. They have good sealing properties and can effectively prevent leakage or moisture absorption of materials during transportation and storage. They are suitable for packaging powdery or granular materials such as cement, feed, and chemical raw materials, and are widely used in industrial production and logistics transportation.

[0003] During the process of forming valve bags by applying glue to close the bottom and top of the bag body on the bottom sealing machine production line, defects such as glue leakage, glue detachment, no glue, insufficient glue amount, and glue application position deviation may occur. This can cause small powder leaks at the glue bonding points of one or more bag pieces at the bottom, mouth, and valve when the valve bags are pressure-filled with powder by the fully automatic filling machine. In addition, some powder leakage may also occur due to pressure during stacking and shaking during transportation, leading to customer quality complaints and even product returns for repair. Utility Model Content

[0004] The purpose of this invention is to provide a valve bag powder leakage detection device to solve the above problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution, including:

[0006] A compression sealing device, comprising a first compression assembly and a second compression assembly mounted on a frame, for compressing and sealing the valve port of a valve bag;

[0007] The self-priming spraying device includes a self-priming spray gun installed inside the frame, used to fill the valve bag with compressed air and self-priming powder through pipelines for powder leakage detection.

[0008] As a further description of the above technical solution, a fixing plate is installed on the outside of the frame, and the first compression component and the second compression component are symmetrically installed on one side of the fixing plate.

[0009] As a further description of the above technical solution, the first compression component includes an upper liner block, and an upper pressure dual-shaft cylinder is installed on one side of the upper liner block.

[0010] As a further description of the above technical solution, an upper pressure bar is installed at the output end of the upper pressure dual-axis cylinder, and an upper pressure elastic pad is provided at the bottom of the upper pressure bar.

[0011] As a further description of the above technical solution, the second compression assembly includes a lower liner block, and a downward-pressing dual-shaft cylinder is mounted on one side of the lower liner block.

[0012] As a further description of the above technical solution, a pressure bar is installed at the output end of the pressure dual-axis cylinder, and a pressure elastic pad is provided on the top of the pressure bar.

[0013] As a further description of the above technical solution, the self-priming spray gun is mounted on the fixed plate, and the outlet pipe of the self-priming spray gun is connected to an air inlet.

[0014] As a further description of the above technical solution, the self-priming spray gun is connected to the valve port of the valve bag through an air inlet, and the air inlet is connected to a pressure gauge through a pipeline.

[0015] As a further description of the above technical solution, a pressure-holding valve is provided on the outlet pipe of the self-priming spray gun.

[0016] As a further description of the above technical solution, the inlet pipe of the self-priming spray gun is connected to a pressure air inlet pipe and a powder feed pipe, respectively.

[0017] The beneficial effects of this utility model are as follows:

[0018] In this invention, the first compression component and the second compression component compress and seal the valve opening of the valve bag. Combined with the self-priming spray gun, it simulates the pressure filling process of a fully automatic filling machine. After filling, the valve bag is tapped to check for leakage. This allows for a quick and intuitive assessment of the quality of the current batch of valve bags, such as the coating and bonding, and enables timely adjustments to the corresponding production process.

[0019] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the valve bag powder leakage detection device of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the valve bag powder leakage detection device of this utility model. Figure 2 ;

[0022] Figure 3 This is a front view of the valve bag powder leakage detection device of this utility model;

[0023] Figure 4 yes Figure 3 Enlarged diagram of point AA in the middle.

[0024] Figure label:

[0025] 1. Compression sealing device; 11. First compression assembly; 111. Upper liner block; 112. Upper pressure dual-shaft cylinder; 113. Upper pressure bar; 114. Upper pressure elastic pad; 12. Second compression assembly; 121. Lower liner block; 122. Lower pressure dual-shaft cylinder; 123. Lower pressure bar; 124. Lower pressure elastic pad; 13. Fixing plate; 2. Frame; 3. Valve bag; 31. Bag valve port; 4. Self-priming spraying device; 41. Self-priming spray gun; 42. Air inlet; 43. Pressure gauge; 44. Pressure holding air valve; 45. Pressure inlet pipe; 46. Powder feed pipe. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] like Figures 1-4 As shown, in one embodiment, a valve bag powder leakage detection device includes: a compression sealing device 1 and a self-priming spraying device 4 mounted on a frame 2.

[0028] The compression sealing device 1 includes a first compression component 11 and a second compression component 12 installed on the frame 2, which are used to compress and seal the valve opening 31 of the valve bag 3, simulating the pressure environment that the valve bag 3 is subjected to during the sealing process in actual production, and ensuring that the sealing state of the valve bag 3 meets the actual use requirements; while the self-priming spraying device 4 includes a self-priming spray gun 41 installed inside the frame 2, which is used to fill the valve bag 3 with compressed air and self-priming powder through the pipeline for powder leakage detection, and can highly reproduce the actual working conditions of the fully automatic filling machine when filling powder under pressure.

[0029] Understandably, the first compression component 11 and the second compression component 12 compress and seal the valve opening 31 of the valve bag 3. This, combined with the self-priming spray gun 41 simulating the pressure filling process of a fully automatic filling machine, allows for quick and intuitive assessment of the quality of the current batch of valve bags 3, including the adhesive application process and bonding effect, by tapping the valve bag 3 after filling to detect any leakage. Once a problem is detected, technicians can quickly and specifically adjust the production process of the valve bag 3 based on the test results. This includes optimizing adhesive parameters, adjusting bonding temperature and pressure, and improving the sealing mechanism, thereby effectively improving the overall quality of the valve bag 3, reducing the defect rate, and ensuring the reliability and stability of the product during actual use.

[0030] Furthermore, a fixing plate 13 is installed on the outside of the frame 2, while the first compression assembly 11 and the second compression assembly 12 are symmetrically installed on one side of the fixing plate 13.

[0031] Specifically, the first compression assembly 11 includes an upper pad block 111, which can effectively buffer mechanical stress during operation; an upper pressure dual-axis cylinder 112 is installed on one side of the upper pad block 111, an upper pressure strip 113 is installed at the output end of the upper pressure dual-axis cylinder 112, and an upper pressure elastic pad 114 is provided at the bottom of the upper pressure strip 113. The upper pressure strip 113 can be made of highly elastic and aging-resistant silicone material, which can evenly transmit the cylinder pressure to the valve bag 3; correspondingly, the second compression assembly 12 includes a lower pad block 121, which can also effectively buffer mechanical stress during operation; a lower pressure dual-axis cylinder 122 is installed on one side of the lower pad block 121, a lower pressure strip 123 is installed at the output end of the lower pressure dual-axis cylinder 122, and a lower pressure elastic pad 124 is provided at the bottom of the lower pressure strip 123. The lower pressure strip 123 is also made of highly elastic and aging-resistant silicone material, which can evenly transmit the cylinder pressure to the valve bag 3.

[0032] Please continue reading. Figures 1-4 In this embodiment, the self-priming spray gun 41 is mounted on the fixed plate 13. The outlet pipe of the self-priming spray gun 41 is connected to a diamond-shaped air inlet 42, so that the self-priming spray gun 41 is connected to the bag valve 31 of the valve bag 3 through the air inlet 42. The air inlet 42 is connected to the pressure gauge 43 through the pipe, so that the pressure change inside the valve bag 3 during the filling process can be monitored in real time.

[0033] Furthermore, a pressure-holding valve 44 is installed on the outlet pipe of the self-priming spray gun 41. After the valve bag 3 is filled, the pressure-holding valve 44 can be closed to maintain the stable internal pressure of the valve bag 3. The inlet pipe of the self-priming spray gun 41 is connected to a pressure inlet pipe 45 and a powder feed pipe 46. The pressure inlet pipe 45 can be made of high-strength pressure-resistant rubber material, which can withstand large air pressure impacts and provide a stable air source for the self-priming spray gun 41. The powder feed pipe 46 can be made of wear-resistant special plastic material, which can effectively reduce the adhesion and blockage of powder during the conveying process.

[0034] Working principle: The valve opening 31 of the valve bag 3 is fitted onto the diamond-shaped air inlet 42. Then, the air supply switches of the upper pressure dual-axis cylinder 112 and the lower pressure dual-axis cylinder 122 are turned on, which in turn drives the upper pressure bar 113 and the lower pressure bar 123 to move towards each other. The corresponding upper pressure elastic pad 114 and lower pressure elastic pad 124 come close together and press the valve opening 31 of the bag to seal it. Then, the working switch of the self-priming spray gun 41 is turned on and the pressure holding air valve 44 is opened, so that high-pressure air (enters the self-priming gun through the pressure air inlet pipe 45) The spray gun 41 and ultrafine powder (entering the self-priming spray gun 41 through the powder feed pipe 46) are simultaneously filled into the valve bag 3, causing the bag 3 to gradually inflate to the set pressure and then the pressure-holding air valve 44 is closed. Then, the bag is continuously tapped to check for any powder leakage. If leakage is found, the bag can be dissected to find the corresponding leak point and check the adhesive bonding at the leak point. Then, the adhesive coating component of the bottom pasting machine production line corresponding to the leak point is checked, and the adhesive coating process is adjusted in time.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A valve bag dust leakage detection apparatus, characterized by, include: The compression sealing device (1) includes a first compression assembly (11) and a second compression assembly (12) mounted on a frame (2) for compressing and sealing the bag valve port (31) of the valve bag (3); The self-priming spraying device (4) includes a self-priming spray gun (41) installed inside the frame (2) for filling the valve bag (3) with compressed air and self-priming powder through pipeline for powder leakage detection.

2. The valve bag spill detection apparatus of claim 1, wherein, A fixing plate (13) is installed on the outside of the frame (2), and the first compression component (11) and the second compression component (12) are symmetrically installed on one side of the fixing plate (13).

3. The valve bag spill detection apparatus of claim 1, wherein, The first compression assembly (11) includes an upper liner block (111), and an upper pressure dual-shaft cylinder (112) is mounted on one side of the upper liner block (111).

4. The valve bag spill detection apparatus of claim 3, wherein, The output end of the upper pressure dual-axis cylinder (112) is equipped with an upper pressure bar (113), and an upper pressure elastic pad (114) is provided at the bottom of the upper pressure bar (113).

5. The valve bag spill detection apparatus of claim 1, wherein, The second compression assembly (12) includes a lower liner (121), on one side of which a downward-pressing dual-shaft cylinder (122) is mounted.

6. The valve bag spill detection apparatus of claim 5, wherein, The output end of the pressure dual-axis cylinder (122) is equipped with a pressure bar (123), and a pressure elastic pad (124) is provided on the top of the pressure bar (123).

7. The valve bag powder leakage detection device according to claim 1, characterized in that, The self-priming spray gun (41) is mounted on the fixed plate (13), and the outlet pipe of the self-priming spray gun (41) is connected to an air inlet (42).

8. The valve bag spill detection apparatus of claim 7, wherein, The self-priming spray gun (41) is connected to the bag valve port (31) of the valve bag (3) through the air inlet (42), and the air inlet (42) is connected to the pressure gauge (43) through the pipeline.

9. The valve bag spill detection apparatus of claim 7, wherein, The outlet pipe of the self-priming spray gun (41) is equipped with a pressure-holding air valve (44).

10. The valve bag spill detection apparatus of claim 7, wherein, The inlet pipe of the self-priming spray gun (41) is connected to a pressure air inlet pipe (45) and a powder feed pipe (46).

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