A leak detection device and method for a container in a ton barrel

Abstract

The present invention relates to the technical field of ton barrel leak detection. The present invention discloses a ton barrel container leak detection device and method, comprising a supporting and fixing mechanism, a sealing mechanism, an air-filling and pressurizing mechanism and a detecting mechanism. The device drives a plurality of lower supporting members to move radially so that the plurality of lower supporting members extend to below the lower edge of the barrel mouth, so that the barrel mouth is arranged between the plurality of lower supporting members and the sealing plate. Then, an upper sealing module and a lower sealing module are driven to approach each other in the up and down directions. In the up and down directions, the sealing plate is sealed against the upper edge of the barrel mouth, and the plurality of lower supporting members are abutted against the lower edge of the barrel mouth, so that the barrel mouth is clamped between the plurality of lower supporting members and the sealing plate, so as to achieve the sealing of the barrel mouth. At this time, the plurality of lower supporting members provide a supporting effect for the sealing and pressing of the sealing plate, and the inner container is not used as a supporting point, so that the deformation of the inner container and irreversible damage caused can be avoided, and the air tightness of the sealing plate to the barrel mouth is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ton barrel leakage detection, and in particular to a ton barrel container leakage detection device and method. Background Art

[0002] Ton barrel refers to IBC intermediate bulk container, which is an essential tool for modern storage and transportation of liquid products. The container barrel is composed of inner container and metal frame. The inner container is blow-molded with high molecular weight and high density polyethylene, which has high strength, corrosion resistance and good hygiene.

[0003] After the inner container is formed, it is necessary to conduct a sealing test on the inner container to detect whether there is any air leakage or liquid leakage in the inner container. Now there are some ton barrel leak detection equipment on the market that can realize automatic leak detection of the inner container, but the current ton barrel leak detection equipment all uses a downward pressure mechanism to compress and seal the barrel mouth, and then inflate and pressurize it, and detect whether there is any air leakage in the inner container by detecting the downward pressure and displacement. If there is any air leakage in the inner container, the inner container will be deformed under the action of the downward pressure and sealing mechanism, and the downward displacement will increase. If there is no air leakage in the inner container, the inner container will not be deformed under the action of the downward pressure and sealing mechanism, and the downward pressure and displacement will remain unchanged or change very little.

[0004] The above-mentioned leak detection method has the following problems: since the inner container itself is a soft component, the bottom of the barrel mouth has no support, which makes the barrel mouth easy to deform, making it easy for the downward pressure sealing mechanism and the barrel mouth to have a loose seal, affecting the accuracy of the detection and easily causing irreversible deformation and damage to the inner container. Summary of the invention

[0005] The object of the present invention is to provide a leak detection device and method for a ton barrel container, so as to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0006] The technical solutions adopted to solve the above technical problems are:

[0007] According to a first aspect of an embodiment of the present invention, a ton barrel inner container leakage detection device is applied to an inner container with a barrel opening at the top, and the ton barrel inner container leakage detection device comprises:

[0008] A supporting and fixing mechanism, provided with a supporting platform for placing and fixing the inner container;

[0009] The sealing mechanism comprises a sealing assembly and a sealing lifting assembly, wherein the sealing assembly is located above the supporting platform, the sealing assembly comprises an upper sealing module, a lower sealing module and a sealing driving module, the upper sealing module and the lower sealing module are arranged at intervals along an upper and lower axis, the upper sealing module is provided with a sealing plate, and the lower sealing module is provided with a plurality of lower supporting members arranged in a ring-shaped radial shape with the upper and lower axes as the center, the sealing lifting assembly is configured to drive the sealing assembly to rise and fall so that the lower sealing module extends below the barrel mouth, the sealing driving module is configured to drive the plurality of lower supporting members to move radially along the upper and lower axes so that the plurality of lower supporting members extend to below the lower edge of the barrel mouth, and the sealing driving module is further configured to drive the upper sealing module and the lower sealing module to approach and move away from each other in the upper and lower directions so that the sealing plate is in sealing contact with the upper edge of the barrel mouth, and the plurality of lower supporting members are in contact with the lower edge of the barrel mouth;

[0010] An inflation and pressurization mechanism, comprising an inflation head provided on the blocking component and an air supply component connected to the inflation head, wherein the inflation head is configured to fill the inner container with high-pressure gas provided by the air supply component;

[0011] The detection mechanism includes a detection head disposed on the blocking component, and the detection head is configured to detect the internal air pressure of the inner container.

[0012] The beneficial effects of the ton barrel container leakage detection device of the present invention are:

[0013] When leak detection is performed, the plugging assembly is driven to rise and fall by the plugging lifting assembly so that the lower plugging module is extended to the bottom of the barrel mouth, that is, the multiple lower support members are extended to the bottom of the barrel mouth, and the plugging plate is located above the barrel mouth, and then the multiple lower support members are driven to move radially along the upper and lower axes by the plugging driving module, so that the multiple lower support members are extended to the bottom of the lower edge of the barrel mouth, so that the barrel mouth is located between the multiple lower support members and the plugging plate, and then the upper plugging module and the lower plugging module are driven to approach each other in the up and down directions by the plugging driving module, so that the plugging plate and the upper edge of the barrel mouth are sealed and abutted in the up and down directions, and the multiple lower support members are abutted against the lower edge of the barrel mouth, so that the barrel mouth is clamped on the multiple Between the lower support member and the sealing plate, the barrel mouth is sealed. At this time, the multiple lower support members provide a supporting effect for the sealing and pressing of the sealing plate, and the inner container is not used as a supporting point, so as to avoid deformation of the inner container and cause irreversible damage. At the same time, the airtightness of the sealing plate to the barrel mouth is also improved. After the barrel mouth is sealed, the inflation head and the detection head follow into the inner container, and the high-pressure gas provided by the air supply assembly is filled into the inner container through the inflation head to pressurize the inner container, and the internal air pressure of the inner container is detected by the detection head to determine whether there is a leak in the inner container. The present invention detects leaks in the inner container by detecting the air pressure, which can further reduce the loss of the inner container.

[0014] According to some embodiments of the present invention, the blocking assembly also includes a blocking seat with a columnar outer periphery, the blocking seat is transmission-connected to the blocking lifting assembly, the blocking plate is ring-shaped, the blocking plate is sealingly and slidingly sleeved on the outer periphery of the blocking seat, the outer peripheral wall at the lower end of the blocking seat is provided with a plurality of guide grooves, the plurality of guide grooves are annular and radial, and the plurality of lower support members are sealingly and slidingly installed in the plurality of guide grooves in a one-to-one correspondence.

[0015] According to some embodiments of the present invention, a sliding groove extending in the axial direction is provided at the center of the blocking seat, the inner ends of the plurality of guide through grooves are connected to the sliding groove, an elastic reset member is provided between the guide through groove and the lower support member, and the elastic reset member is used to provide a reset elastic force for the lower support member to move in the direction of the sliding groove, so that the lower support member extends inwardly into the sliding groove;

[0016] The blocking drive module includes a top shaft slidably sleeved in the sliding groove, and a blocking drive component driving the top shaft to reciprocate axially. The outer peripheral wall of the top shaft can abut against the inner end of the lower support member to drive the lower support member to move radially outward.

[0017] According to some embodiments of the present invention, the inner periphery of the guide groove is provided with a first step and a second step which are arranged opposite to each other from the inside to the outside, the outer peripheral wall of the lower support member is provided with the limiting ring located between the first step and the second step, and the elastic reset member acts between the limiting ring and the second step.

[0018] According to some embodiments of the present invention, the lower end of the sliding groove is sealed, and the lower end of the top shaft is in an inverted cone shape.

[0019] According to some embodiments of the present invention, the upper end of the top shaft is connected to a transmission frame, the blocking plate is connected to the transmission frame, the blocking drive component is in transmission connection with the transmission frame, and the blocking drive component drives the transmission frame to rise and fall.

[0020] According to some embodiments of the present invention, the blocking plate is adjustably connected to the transmission frame up and down.

[0021] According to some embodiments of the present invention, a plurality of connecting rods are connected to the top surface of the blocking plate in an annular manner, and the plurality of connecting rods are vertically arranged, the upper ends of the connecting rods are adjustably connected to the transmission frame, and the lower ends of the connecting rods are fixedly connected to the blocking plate;

[0022] The upper end of the blocking seat is connected with a connecting frame, the connecting frame is provided with a plurality of first guide holes, the connecting rod is slidably sleeved in the first guide holes up and down, and the connecting frame is transmission-connected with the blocking lifting assembly.

[0023] According to some embodiments of the present invention, the support platform is provided with a first positioning component and a second positioning component, the first positioning component includes a first push plate and a first lifting plate arranged opposite to each other along a first transverse direction, the second positioning component includes a second push plate and a second lifting plate arranged opposite to each other along a second transverse direction, the first push plate is connected to a first pushing driving component for driving the first push plate to move along the first transverse direction, the first lifting plate is connected to a first lifting driving component for driving the first lifting plate to be lifted and lowered, the second push plate is connected to a second pushing driving component for driving the second push plate to move along the second transverse direction, the second lifting plate is connected to a second lifting driving component for driving the second lifting plate to be lifted and lowered, and the first transverse direction and the second transverse direction are vertically arranged on a horizontal plane.

[0024] According to a second aspect of an embodiment of the present invention, a method for detecting leakage of a ton barrel container is applied to the ton barrel container leakage detection device. The method for detecting leakage of a ton barrel container comprises:

[0025] The inner container is placed and fixed on the support platform, and the barrel opening on the top of the inner container is opposite to the blocking assembly;

[0026] Lowering the blocking assembly so that the lower blocking module extends below the barrel opening;

[0027] Controlling the plurality of lower support members to extend radially outward to below the lower edge of the barrel opening;

[0028] Controlling the upper blocking module and the lower blocking module to move closer to each other in the up-down direction, so that the blocking plate is in sealing contact with the upper edge of the barrel opening, and the plurality of lower support members are in contact with the lower edge of the barrel opening, so as to block the barrel opening;

[0029] Filling the inner container with high-pressure gas according to a preset pressure;

[0030] After a preset period of time, detecting the real-time air pressure inside the inner container;

[0031] Subtracting the real-time air pressure from the preset air pressure to obtain an air pressure difference;

[0032] When the air pressure difference is greater than or equal to a preset difference, it is determined that there is air leakage in the inner container; otherwise, it is determined that the inner container is qualified.

[0033] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0035] Figure 1 It is a side cross-sectional view of an embodiment of the ton barrel container leakage detection device provided by the present invention;

[0036] Figure 2 yes Figure 1 A partial enlarged view of part A, in which the lower support member and the blocking plate are in a blocked state;

[0037] Figure 3 It is a cross-sectional view of a blocking seat provided by the present invention, located at the position of a lower support member, of one embodiment thereof;

[0038] Figure 4 yes Figure 2 Schematic diagram of the lower support member and the blocking plate in a natural state;

[0039] Figure 5 is a top view of an embodiment of the supporting and fixing mechanism provided by the present invention;

[0040] Figure 6 This is a structural schematic diagram of an embodiment of the inflation and pressurization mechanism provided by the present invention;

[0041] Figure 7 This is a flow chart of steps of one embodiment of the method for detecting leakage in a ton barrel container provided by the present invention;

[0042] Figure Number:

[0043] Support and fixation mechanism 100; support platform 110; first positioning assembly 120; first push plate 121; first lifting plate 122; first material pushing driving member 123; first lifting driving member 124; second positioning assembly 130; second push plate 131; second lifting plate 132; second material pushing driving member 133; second lifting driving member 134;

[0044] Blocking mechanism 200; blocking assembly 210; blocking plate 211; connecting rod 2111; adjusting nut 2112; first sealing ring 2113; sealing ring gasket 2114; lower support member 212; limiting ring 2121; blocking seat 213; connecting frame 2131; first guide hole 2132; first guide sleeve 2133; guide rod 2134; guide slot 214; first step 2141; second step 2142; second sealing ring 2143; sliding slot 215; elastic reset member 216; top shaft 217; blocking drive member 218; transmission frame 219; adjusting through hole 2191; blocking lifting assembly 220; blocking lifting drive member 221; frame 222; second guide hole 2221; second guide sleeve 2222;

[0045] Inflating and pressurizing mechanism 300; inflating head 310; high-pressure air pump 320; air storage tank 330; first control valve 340; second control valve 350; third control valve 360; pressure relief valve 370; airway 380;

[0046] Detection head 400;

[0047] Inner container 500; barrel mouth 510. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0051] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0052] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0053] The existing leak detection device has the following problems when detecting leaks in the inner container 500 of a ton barrel: since the inner container 500 itself is a soft component, the bottom of the barrel mouth 510 has no support, which makes the barrel mouth 510 easy to deform, and makes it easy for there to be a loose seal between the downward pressure sealing mechanism 200 and the barrel mouth 510, affecting the accuracy of the detection, and easily causing irreversible deformation and damage to the inner container 500. Therefore, the present invention proposes a leak detection device for the inner container of a ton barrel, which can avoid the deformation of the inner container 500 and cause irreversible damage, and also improve the airtightness of the seal on the barrel mouth 510.

[0054] The ton barrel container leak detection device of this embodiment is applied to a container 500 having a barrel opening 510 at the top, such as Figure 1 As shown, the inner container 500 is formed with a barrel mouth 510, and the barrel mouth 510 is provided with an upper edge located outside the inner container 500 and a lower edge located inside the inner container 500, and a step is formed between the top surface inside the inner container 500 and the lower edge of the barrel mouth 510. The leakage detection device for the ton barrel inner container 500 of this embodiment is mainly aimed at this type of inner container 500.

[0055] like Figure 1 As shown, the leakage detection device for the ton barrel container of this embodiment includes a supporting and fixing mechanism 100, a sealing mechanism 200, an inflation and pressurization mechanism 300 and a detection mechanism.

[0056] The supporting and fixing mechanism 100 is provided with a supporting platform 110 which is arranged horizontally. The supporting platform 110 is used to place and fix the inner container 500 so that the barrel mouth 510 is arranged upward.

[0057] The blocking mechanism 200 includes a blocking component 210 and a blocking lifting component 220. The blocking component 210 is located above the supporting platform 110. The blocking lifting component 220 is transmission-connected to the blocking component 210. The blocking lifting component 220 is used to drive the blocking component 210 to rise and fall along the upper and lower axes.

[0058] like Figure 2 As shown, the sealing assembly 210 of this embodiment includes an upper sealing module, a lower sealing module and a sealing drive module. The upper sealing module and the lower sealing module are arranged at intervals along the upper and lower axes. The upper sealing module of this embodiment is provided with a sealing plate 211, and the lower sealing module is provided with a plurality of lower support members 212 arranged radially in a ring shape with the upper and lower axes as the center.

[0059] When the plugging lifting assembly 220 drives the plugging assembly 210 to rise and fall, the lower plugging module can be extended to the bottom of the barrel mouth 510. It can be understood that the multiple lower support members 212 are extended into the inner container 500 and descend to the bottom of the barrel mouth 510.

[0060] The blocking drive module of this embodiment has two functions. The first function is to drive the multiple lower support members 212 to move radially along the upper and lower axes so that the multiple lower support members 212 extend below the lower edge of the barrel mouth 510. The first function is to drive the upper blocking module and the lower blocking module to move closer to and away from each other on the upper and lower axes so that the blocking plate 211 is sealed and abutted against the upper edge of the barrel mouth 510, and the multiple lower support members 212 are abutted against the lower edge of the barrel mouth 510.

[0061] When leak detection is performed, the plugging assembly 210 is driven to rise and fall by the plugging lifting assembly 220 so that the lower plugging module is extended below the barrel mouth 510, that is, the multiple lower support members 212 are extended below the barrel mouth 510, and the plugging plate 211 is located above the barrel mouth 510, and then the multiple lower support members 212 are driven to move radially along the upper and lower axes by the plugging driving module so that the multiple lower support members 212 are extended to below the lower edge of the barrel mouth 510, so that the barrel mouth 510 is located between the multiple lower support members 212 and the plugging plate 211, and then the upper plugging module and the lower plugging module are driven by the plugging driving module. They are close to each other in the up and down directions, so that the sealing plate 211 is sealed and abutted against the upper edge of the barrel mouth 510, and the multiple lower support members 212 are abutted against the lower edge of the barrel mouth 510, so that the barrel mouth 510 is clamped between the multiple lower support members 212 and the sealing plate 211 to achieve the sealing of the barrel mouth 510. At this time, the multiple lower support members 212 provide a supporting effect for the sealing and pressing of the sealing plate 211, and do not use the inner container 500 as a supporting point, thereby avoiding the deformation of the inner container 500 and causing irreversible damage, and also improves the airtightness of the sealing plate 211 to the barrel mouth 510.

[0062] like Figure 2 and Figure 6 As shown, the inflation and pressurization mechanism 300 of this embodiment includes an inflation head 310 and an air supply assembly that are interconnected. The inflation head 310 is arranged on the sealing assembly 210. The inflation head 310 can follow the lifting and lowering of the sealing assembly 210 to enter and exit the inner container 500. The air supply assembly is used to provide high-pressure gas. The inflation head 310 fills the high-pressure gas provided by the air supply assembly into the inner container 500.

[0063] like Figure 2 As shown, the detection mechanism includes a detection head 400 arranged in the sealing component 210, and the detection head 400 is used to detect the internal air pressure of the inner container 500. The detection head 400 can also follow the lifting and lowering of the sealing component 210 to enter and exit the inner container 500. The detection head 400 uses a pressure sensor. The detection head 400 is connected to the controller, and the detection head 400 transmits the collected data to the controller.

[0064] After the barrel mouth 510 is sealed, the inflation head 310 and the detection head 400 follow the sealing component 210 into the inner container 500, and the high-pressure gas provided by the gas supply component is filled into the inner container 500 through the inflation head 310 to be pressurized, and the internal air pressure of the inner container 500 is detected by the detection head 400 to determine whether there is any air leakage in the inner container 500. The present invention can detect leaks in the inner container 500 by detecting the air pressure, which can further reduce the loss of the inner container 500.

[0065] like Figure 2 As shown, the blocking assembly 210 of this embodiment also includes a blocking seat 213 with a columnar outer periphery. The blocking seat 213 is vertically arranged, and is transmission-connected to the blocking lifting assembly 220. The blocking lifting assembly 220 drives the blocking seat 213 to rise and fall, wherein the outer diameter of the blocking seat 213 is smaller than the diameter of the barrel mouth 510, so that the blocking seat 213 can be extended into the barrel mouth 510, and the axis of the blocking seat 213 is collinear with the above-mentioned upper and lower axes.

[0066] The blocking plate 211 of this embodiment is arranged in an annular shape, and the outer diameter of the blocking plate 211 is much larger than the diameter of the barrel mouth 510, so that the outer periphery of the blocking plate 211 can cover the barrel mouth 510, and the blocking plate 211 is sealingly slidably sleeved on the outer periphery of the blocking seat 213, and the blocking plate 211 can move up and down relative to the blocking seat 213. In order to improve the sealing performance, the first sealing ring 2113 is arranged between the blocking plate 211 and the outer periphery of the blocking seat 213. In order to improve the sealing performance of the plugging, a sealing ring gasket 2114 is arranged on the bottom surface of the blocking plate 211.

[0067] like Figure 2 and Figure 3As shown, the outer peripheral wall of the lower end of the blocking seat 213 is provided with a plurality of guide grooves 214, and the plurality of guide grooves 214 are radially arranged in a ring shape with the axis of the blocking seat 213 as the center. The plurality of lower support members 212 are sealed and slidably installed in the plurality of guide grooves 214 one by one. It can be understood that the lower support member 212 can move along the guide grooves 214 relative to the blocking seat 213, that is, move radially. The guide grooves 214 are used to guide the lower support member 212, and also to lock and limit the lower support member 212 in the upper and lower directions, so as to improve the bearing capacity of the lower support member 212.

[0068] When sealing the barrel mouth 510, multiple lower support members 212 move outward along the guide groove 214, so that the outer ends of the lower support members 212 extend outward to the lower edge of the barrel mouth 510. At this time, the circumferential range supported by the multiple lower support members 212 is expanded, and the sealing plate 211 is arranged opposite to the upper edge of the barrel mouth 510. At this time, after the sealing plate 211 and the multiple lower support members 212 are driven to approach each other in the up and down directions, the bottom surface of the annular sealing plate 211 abuts against the upper edge of the barrel mouth 510, and the multiple lower support members 212 abut against the lower edge of the barrel mouth 510. The sealing plate 211 and the sealing seat 213 form a sealing cover structure to achieve sealing of the barrel mouth 510, and the multiple lower support members 212 provide support for the lower edge of the barrel mouth 510 to prevent the barrel mouth 510 from sinking downward.

[0069] In this embodiment, the blocking seat 213 is used to guide the installation of the blocking plate 211 and the multiple lower support members 212, which can improve the movement accuracy of the blocking plate 211 and the multiple lower support members 212, and also improve the strength of the structure and make the overall blocking assembly 210 more compact.

[0070] Furthermore, if Figure 2 As shown, a sliding groove 215 extending in the axial direction is provided at the center of the blocking seat 213, and the inner ends of the plurality of guide grooves 214 are connected to the sliding groove 215. An elastic reset member 216 is provided between the guide groove 214 and the lower support member 212. The elastic reset member 216 is used to provide a reset elastic force for the lower support member 212 to move in the direction of the sliding groove 215, so that the lower support member 212 extends inwardly into the sliding groove 215, as shown in FIG. Figure 4 As shown, in the natural state, the inner end of the lower support member 212 extends into the sliding groove 215, and at this time, the supporting circumferential range of the multiple lower support members 212 is reduced.

[0071] The blocking drive module of this embodiment includes a top shaft 217 and a blocking drive member 218. The top shaft 217 is slidably sleeved in the sliding groove 215. The blocking drive member 218 is used to drive the top shaft 217 to reciprocate along the axial direction. The outer peripheral wall of the top shaft 217 of this embodiment can abut against the inner end of the lower support member 212 to drive the lower support member 212 to move radially outward. Figure 2 As shown in FIG. 2 , when the barrel opening 510 is sealed, the top shaft 217 moves downward, and the outer peripheral wall of the top shaft 217 abuts against the inner end of the lower support member 212, driving the lower support member 212 to move outward along the guide groove 214, so that the outer end of the lower support member 212 extends outward to below the lower edge of the barrel opening 510, as shown in FIG. Figure 4 As shown, when the leak detection is completed and the sealing assembly 210 needs to be removed, the top shaft 217 moves upward. At this time, the top shaft 217 moves to above the inner port of the guide groove 214. At this time, the elastic reset member 216 drives the lower support member 212 to move inward along the guide groove 214, and the outer end of the lower support member 212 retracts inward, thereby reducing the support circumferential range of multiple lower support members 212.

[0072] like Figure 2 and Figure 3 As shown, the inner peripheral wall of the guide groove 214 of this embodiment is provided with a first step 2141 and a second step 2142 which are spaced opposite to each other from the inside to the outside, and the outer peripheral wall of the lower support member 212 is provided with a limit ring 2121 located between the first step 2141 and the second step 2142, and the elastic return member 216 acts between the limit ring 2121 and the second step 2142. The elastic return member 216 of this embodiment is a spring, and the elastic return member 216 is sleeved on the outer periphery of the lower support member 212. The lower support member 212 is a rod structure. In a natural state, the elastic return member 216 drives the lower support member 212 to move inward by pushing the limit ring 2121 until the limit ring 2121 moves to abut the first step 2141. At this time, the first step 2141 positions the initial position of the lower support member 212, so that the lower support member 212 remains in a position where it can be pushed by the top shaft 217.

[0073] The lower end of the sliding groove 215 of this embodiment is sealed to minimize the gap to improve the air tightness of the entire sealing assembly 210 , and a second sealing ring 2143 is provided between the lower support member 212 and the guide groove 214 of this embodiment.

[0074] In order to make the top shaft 217 push the lower support member 212 to move more smoothly, as shown in FIG. Figure 2 As shown, the lower end of the top shaft 217 of this embodiment is in an inverted cone shape. In the initial stage of pushing the lower support member 212, the top shaft 217 contacts the inner end of the lower support member 212 through the conical surface, so that the lower support member 212 can better withstand the thrust of moving outward to avoid jamming.

[0075] Furthermore, if Figure 2As shown, the upper end of the top shaft 217 of this embodiment extends upward from the sliding groove 215, the upper end of the top shaft 217 is connected to the transmission frame 219, the blocking plate 211 is connected to the transmission frame 219, and the blocking driving component 218 is transmission-connected to the transmission frame 219, and the blocking driving component 218 drives the transmission frame 219 to rise and fall. It can be understood that the blocking driving component 218 of this embodiment can simultaneously drive the blocking plate 211 and the top shaft 217 to rise and fall when driving the transmission frame 219 to rise and fall, so as to synchronously drive the blocking plate 211 and multiple lower support members 212 to move, and through the force transmission of the top shaft 217, the vertical lifting movement of the transmission frame 219 is converted into the lateral movement of the lower support member 212.

[0076] When sealing the barrel mouth 510, the sealing plate 211 and multiple lower support members 212 are respectively arranged above and below the barrel mouth 510, and then the sealing driving component 218 drives the transmission frame 219 to move downward relative to the sealing seat 213. First, the outer peripheral wall of the top shaft 217 abuts against the inner periphery of the multiple lower support members 212, pushing the multiple lower support members 212 to extend outward to below the lower edge of the barrel mouth 510. Then, during the downward movement of the transmission frame 219, the sealing plate 211 moves downward relative to the sealing seat 213 and abuts against the upper edge of the barrel mouth 510, clamping the barrel mouth 510 between the multiple lower support members 212 and the sealing plate 211.

[0077] In some embodiments, the blocking drive module can use two power sources to respectively drive the blocking plate 211 to rise and fall and drive the multiple lower support members 212 to extend and retract. However, this is structurally complex. The present application uses one power source to realize the extension and retraction of the multiple lower support members 212, as well as the blocking, clamping and releasing actions of the blocking plate 211 and the multiple lower support members 212.

[0078] In some embodiments, in order to further reduce damage to the barrel mouth 510, during the clamping process, the blocking lifting assembly 220 can be controlled to drive the blocking assembly 210 to perform fine adjustments so that the blocking plate 211 and multiple lower support members 212 can clamp the barrel mouth 510 synchronously.

[0079] In order to adapt to barrel mouths 510 of different thicknesses, the sealing plate 211 of this embodiment is adjustably connected to the transmission frame 219 in the upper and lower directions. The initial distance between the sealing plate 211 and the multiple lower support members 212 in the upper and lower directions is adjusted according to the thickness of the barrel mouth 510 to ensure that the top shaft 217 can push the lower support members 212 while allowing the sealing plate 211 and the multiple lower support members 212 to clamp the barrel mouth 510.

[0080] like Figure 2As shown, the top surface of the blocking plate 211 of this embodiment is connected with a plurality of connecting rods 2111 at annular intervals, and the plurality of connecting rods 2111 are vertically arranged. The upper ends of the connecting rods 2111 are adjustably connected to the transmission frame 219 up and down, and the lower ends of the connecting rods 2111 are fixedly connected to the blocking plate 211. The blocking plate 211 can be adjusted by adjusting the relative positions between the plurality of connecting rods 2111 and the transmission frame 219.

[0081] like Figure 2 As shown, the outer edge of the transmission frame 219 of this embodiment is provided with a plurality of adjustment through holes 2191, the upper end of the connecting rod 2111 passes through the adjustment through hole 2191, and the connecting rod 2111 is threadedly sleeved with two adjustment nuts 2112, which are respectively abutted against the top and bottom surfaces of the transmission frame 219 to achieve adjustment and fixation between the connecting rod 2111 and the transmission frame 219.

[0082] like Figure 2 As shown, the upper end of the blocking seat 213 of this embodiment is connected to a connecting frame 2131, and the connecting frame 2131 is in transmission connection with the blocking lifting assembly 220. The blocking lifting assembly 220 drives the connecting frame 2131 to rise and fall, so as to drive the components on the blocking seat 213 to rise and fall together. The blocking driving component 218 is installed on the connecting frame 2131. The blocking driving component 218 of this embodiment adopts a linear driving structure such as a cylinder or an oil cylinder.

[0083] In order to improve the stability of the blocking plate 211 sliding up and down, the connecting frame 2131 of this embodiment is provided with a plurality of first guide holes 2132, and the connecting rod 2111 is slidably mounted in the first guide hole 2132. In order to improve the smoothness of sliding, the first guide hole 2132 is provided with a first guide sleeve 2133, and the first guide hole 2132 is slidably matched with the connecting rod 2111 through the first guide sleeve 2133. In this way, the up and down sliding of the connecting rod 2111 can be guided to improve the stability of the movement of the blocking plate 2111.

[0084] The plugging lifting assembly 220 of this embodiment includes a plugging lifting driving member 221 and a frame 222, the frame 222 is mounted on the plugging lifting driving member 221, and the connecting frame 2131 is drivingly connected to the plugging lifting driving member 221, a plurality of guide rods 2134 are provided on the top of the connecting frame 2131, the frame 222 is provided with a plurality of second guide holes 2221 that are slidably fitted with the guide rods 2134, and the second guide holes 2221 are provided with second guide sleeves 2222 to achieve the up and down sliding fit between the connecting frame 2131 and the frame 222. The plugging lifting driving member 221 of this embodiment adopts a linear drive structure such as a cylinder or an oil cylinder.

[0085] like Figure 5As shown, the support platform 110 of the present embodiment is provided with a first positioning assembly 120 and a second positioning assembly 130. The first positioning assembly 120 includes a first push plate 121 and a first lifting plate 122 which are relatively arranged along a first transverse direction. The second positioning assembly 130 includes a second push plate 131 and a second lifting plate 132 which are relatively arranged along a second transverse direction. The first push plate 121, the first lifting plate 122, the second push plate 131 and the second lifting plate 132 are distributed in a rectangular shape around the support platform 110. The first push plate 121 is connected to a first pushing driving member 123 for driving the first push plate 121 to move along the first transverse direction. The first lifting plate 122 is connected to a first lifting driving member 124 for driving the first lifting plate 122 to be lifted and lowered. The second push plate 131 is connected to a second pushing driving member 133 for driving the second push plate 131 to move along the second transverse direction. The second lifting plate 132 is connected to a second lifting driving member 134 for driving the second lifting plate 132 to be lifted and lowered. The first transverse direction and the second transverse direction are vertically arranged on a horizontal plane.

[0086] When the inner container 500 is loaded, the first lifting plate 122 is driven upward by the first lifting drive component 124 to form a feed port, and the inner container 500 is pushed in from the feed port, and then the first lifting plate 122 is reset downward, at this time, the first pushing drive component 123 and the second pushing drive component 133 are respectively started, and the inner container 500 is positioned in the first horizontal direction by the clamping of the first push plate 121 and the first lifting plate 122, and the inner container 500 is positioned in the second horizontal direction by the clamping of the second push plate 131 and the second lifting plate 132, thereby realizing the positioning and fixation of the inner container 500, so that the barrel mouth 510 is opposite to the blocking component 210.

[0087] After the leak detection is completed, the second lifting plate 132 is driven upward by the second lifting driving member 134 to form a discharge port, and the inner container 500 is pushed out of the discharge port by the second pushing plate 131 .

[0088] In addition, since the volume of the inner container 500 is relatively large, the existing equipment needs to take a long time to inflate and pressurize the inner container 500, which reduces the efficiency of detection and has high energy consumption.

[0089] like Figure 6 As shown, the air supply assembly of this embodiment includes a high-pressure air pump 320 and an air tank 330. The outlet of the high-pressure air pump 320, the tank mouth of the air tank 330 and the charging head 310 are connected by a three-way pipe. The outlet of the high-pressure air pump 320 is provided with a first control valve 340, and the tank mouth of the air tank 330 is provided with a second control valve 350. The charging head 310 is provided with a third control valve 360, and the charging head 310 is connected to a pressure relief valve 370.

[0090] like Figure 2As shown, in this embodiment, an air duct 380 is provided in the sealing seat 213, and the two ends of the air duct 380 are respectively connected to the inflation head 310 and the three-way pipe. The inflation head 310 of this embodiment can realize the two-way flow of airflow. It can be understood that the inflation head 310 can realize the functions of inflation and exhaust.

[0091] The process of inflation leak detection in this embodiment is as follows: when leak detection and inflation are performed on the first inner container 500, the first control valve 340 and the third control valve 360 ​​are opened, the second control valve 350 is closed, and the inner container 500 is inflated by the high-pressure air pump 320. When inflation is completed, the third control valve 360 ​​is closed, and the inner container 500 is leak detected;

[0092] When the leak detection is completed, the first control valve 340 is closed, and the second control valve 350 and the third control valve 360 ​​are opened. At this time, the high-pressure gas inside the inner container 500 flows back to the gas storage tank 330. When the gas pressure of the inner container 500 and the gas storage tank 330 is balanced, the second control valve 350 and the third control valve 360 ​​are closed, and the pressure relief valve 370 is opened to further release the pressure of the inner container 500, and then the pressure relief valve 370 is closed;

[0093] When the second inner container 500 is leak tested and inflated, the first control valve 340 is closed, the second control valve 350 and the third control valve 360 ​​are opened, and the gas tank 330 is filled into the inner container 500. When the air pressure of the inner container 500 is balanced with that of the gas tank 330, the interior of the inner container 500 is raised to a certain air pressure, the second control valve 350 is closed, the first control valve 340 is opened, the high-pressure air pump 320 is started, and the inner container 500 is continuously inflated to the air pressure required for leak testing. When the leak testing is completed, the high-pressure gas inside the inner container 500 is continuously returned to the gas tank 330. This operation is repeated to realize the inflation and leak testing of each inner container 500.

[0094] In this embodiment, a gas storage tank 330 is provided to recover a portion of the high-pressure gas in the inner container 500 after inspection, and the other portion is replenished by the high-pressure air pump 320, thereby reducing the operating time of the high-pressure air pump 320 and achieving energy-saving effects. The inner container 500 is initially inflated and pressurized by the gas stored in the gas storage tank 330, thereby improving the efficiency of inflation.

[0095] In some embodiments, in order to further improve the efficiency of inflation, when loading and unloading the inner container 500, the first control valve 340 and the second control valve 350 can be opened, and the third control valve 360 ​​can be closed. The air storage tank 330 can be inflated and pressurized by the high-pressure air pump 320. When the inner container 500 is inflated, the inner container 500 is inflated and pressurized directly by the air storage tank 330. However, this can only improve the efficiency of inflation, and the high-pressure air pump 320 needs to keep running for a long time.

[0096] like Figure 7 As shown, this embodiment also proposes a ton barrel container leakage detection method, which is applied to a ton barrel container leakage detection device. The ton barrel container leakage detection method includes:

[0097] Step S100: placing and fixing the inner container 500 on the supporting platform 110, and making the barrel opening 510 at the top of the inner container 500 face the blocking assembly 210;

[0098] Step S200: lowering the blocking assembly 210 so that the lower blocking module extends below the barrel opening 510;

[0099] Step S300: Control the plurality of lower support members 212 to extend radially outward to below the lower edge of the barrel opening 510;

[0100] Step S400: Control the upper blocking module and the lower blocking module to move closer to each other in the up-down direction, so that the blocking plate 211 is in sealing contact with the upper edge of the barrel opening 510, and the plurality of lower support members 212 are in contact with the lower edge of the barrel opening 510, so as to block the barrel opening 510;

[0101] Step S500: filling the inner container 500 with high pressure gas according to a preset pressure;

[0102] Step S600: Detecting the real-time air pressure inside the inner container 500 after a preset period of time;

[0103] Step S700: subtracting the real-time air pressure from the preset air pressure to obtain the air pressure difference;

[0104] Step S800: When the air pressure difference is greater than or equal to the preset difference, it is determined that there is air leakage in the inner container 500, otherwise it is determined that the inner container 500 is qualified.

[0105] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0106] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A leak detection device for a ton barrel container, characterized in that: Applicable to a container with a barrel opening on the top, the ton barrel container leakage detection device comprises: A supporting and fixing mechanism, provided with a supporting platform for placing and fixing the inner container; The sealing mechanism comprises a sealing assembly and a sealing lifting assembly, wherein the sealing assembly is located above the supporting platform, the sealing assembly comprises an upper sealing module, a lower sealing module and a sealing driving module, the upper sealing module and the lower sealing module are arranged at intervals along an upper and lower axis, the upper sealing module is provided with a sealing plate, and the lower sealing module is provided with a plurality of lower supporting members arranged in a ring-shaped radial shape with the upper and lower axes as the center, the sealing lifting assembly is configured to drive the sealing assembly to rise and fall so that the lower sealing module extends below the barrel mouth, the sealing driving module is configured to drive the plurality of lower supporting members to move radially along the upper and lower axes so that the plurality of lower supporting members extend to below the lower edge of the barrel mouth, and the sealing driving module is further configured to drive the upper sealing module and the lower sealing module to approach and move away from each other in the upper and lower directions so that the sealing plate is in sealing contact with the upper edge of the barrel mouth, and the plurality of lower supporting members are in contact with the lower edge of the barrel mouth; An inflation and pressurization mechanism, comprising an inflation head provided on the blocking component and an air supply component connected to the inflation head, wherein the inflation head is configured to fill the inner container with high-pressure gas provided by the air supply component; The detection mechanism includes a detection head disposed on the blocking component, and the detection head is configured to detect the internal air pressure of the inner container.

2. The ton barrel container leakage detection device according to claim 1 is characterized in that: The blocking assembly also includes a blocking seat with a columnar outer periphery, the blocking seat is transmission-connected to the blocking lifting assembly, the blocking plate is ring-shaped, and the blocking plate is sealingly and slidably sleeved on the outer periphery of the blocking seat, and the outer peripheral wall at the lower end of the blocking seat is provided with a plurality of guide grooves, the plurality of guide grooves are annular and radial, and the plurality of lower support members are sealingly and slidably installed in the plurality of guide grooves in a one-to-one correspondence.

3. The ton barrel container leakage detection device according to claim 2 is characterized in that: A sliding groove extending in the axial direction is provided at the center of the blocking seat, the inner ends of the plurality of guide through grooves are connected to the sliding groove, an elastic reset member is provided between the guide through groove and the lower support member, and the elastic reset member is used to provide a reset elastic force for the lower support member to move in the direction of the sliding groove, so that the lower support member extends inwardly into the sliding groove; The blocking drive module includes a top shaft slidably sleeved in the sliding groove, and a blocking drive component driving the top shaft to reciprocate axially. The outer peripheral wall of the top shaft can abut against the inner end of the lower support member to drive the lower support member to move radially outward.

4. The ton barrel container leakage detection device according to claim 3 is characterized in that: The inner circumference of the guide groove is provided with a first step and a second step which are arranged opposite to each other from the inside to the outside, and the outer circumferential wall of the lower support member is provided with a limiting ring located between the first step and the second step, and the elastic reset member acts between the limiting ring and the second step.

5. The ton barrel container leakage detection device according to claim 3 is characterized in that: The lower end of the sliding groove is blocked, and the lower end of the top shaft is in an inverted cone shape.

6. The ton barrel container leakage detection device according to claim 3 is characterized in that: The upper end of the top shaft is connected to a transmission frame, the blocking plate is connected to the transmission frame, the blocking driving member is in transmission connection with the transmission frame, and the blocking driving member drives the transmission frame to rise and fall; The top surface of the blocking plate is connected with a plurality of connecting rods at annular intervals. The plurality of connecting rods are vertically arranged. The upper ends of the connecting rods are adjustably connected to the transmission frame up and down, and the lower ends of the connecting rods are fixedly connected to the blocking plate.

7. The ton barrel container leakage detection device according to claim 6 is characterized in that: The blocking plate is adjustably connected to the transmission frame up and down.

8. The ton barrel container leakage detection device according to claim 7 is characterized in that: The upper end of the blocking seat is connected with a connecting frame, the connecting frame is provided with a plurality of first guide holes, the connecting rod is slidably sleeved in the first guide holes up and down, and the connecting frame is transmission-connected with the blocking lifting assembly.

9. The ton barrel container leakage detection device according to claim 1, characterized in that: The support platform is provided with a first positioning component and a second positioning component, the first positioning component includes a first push plate and a first lifting plate arranged opposite to each other along a first transverse direction, the second positioning component includes a second push plate and a second lifting plate arranged opposite to each other along a second transverse direction, the first push plate is connected to a first pushing driving component for driving the first push plate to move along the first transverse direction, the first lifting plate is connected to a first lifting driving component for driving the first lifting plate to be lifted and lowered, the second push plate is connected to a second pushing driving component for driving the second push plate to move along the second transverse direction, the second lifting plate is connected to a second lifting driving component for driving the second lifting plate to be lifted and lowered, and the first transverse direction and the second transverse direction are vertically arranged on a horizontal plane.

10. A method for detecting leakage in a ton barrel container, characterized in that: Applied to the ton barrel container leakage detection device according to any one of claims 1 to 9, the ton barrel container leakage detection method comprises: The inner container is placed and fixed on the support platform, and the barrel opening at the top of the inner container is opposite to the blocking assembly; Lowering the blocking assembly so that the lower blocking module extends below the barrel opening; Controlling the plurality of lower support members to extend radially outward to below the lower edge of the barrel opening; Controlling the upper blocking module and the lower blocking module to move closer to each other in the up-down direction, so that the blocking plate is in sealing contact with the upper edge of the barrel opening, and the plurality of lower support members are in contact with the lower edge of the barrel opening, so as to block the barrel opening; Filling the inner container with high-pressure gas according to a preset pressure; After a preset period of time, detecting the real-time air pressure inside the inner container; Subtracting the real-time air pressure from the preset air pressure to obtain an air pressure difference; When the air pressure difference is greater than or equal to a preset difference, it is determined that there is air leakage in the inner container; otherwise, it is determined that the inner container is qualified.

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