Special physical indicator for high-temperature steam disinfection process and processing method thereof

Abstract

The invention discloses a special physical indicator for a high-temperature steam disinfection process and a processing method thereof, and relates to the technical field of steam disinfection physical indication.The special physical indicator comprises a lower pipe body, a first containing cavity with an opening in the top is formed in the middle of the interior of the lower pipe body, and the first containing cavity is filled with a color-changing material; the bottom of the middle pipe body is rotationally installed on the outer wall of the top end of the lower pipe body, a mesh partition plate is arranged in the middle pipe body and attached to the top end of the lower pipe body in a stopping mode, a second containing cavity is formed in the top area of the mesh partition plate, the second containing cavity is filled with moisture absorption pieces, and the thickness of the moisture absorption pieces is the same as the depth of the second containing cavity; the middle part of the mesh partition plate is relatively communicated with the upper part of the first accommodating cavity; the cover cap covers the outer wall of the top of the middle pipe body in an interference manner, and an air hole for steam to enter is formed in the top surface of the cover cap; a gas-permeable membrane; according to the invention, the indicator can be placed in the packaged complete set of tableware, and after high-temperature steam disinfection is completed, the disinfection condition of the complete set of tableware can be clearly indicated through the indicator.

Description

Technical Field

[0001] The present invention relates to the technical field of physical indicators for steam disinfection, and particularly to a physical indicator dedicated to high-temperature steam disinfection process and its processing method. Background Art

[0002] The hygienic and safety treatment process of a set of tableware (drinking utensils) needs to strictly follow national standards, including key processes such as washing, cleaning, disinfection, and packaging. However, the current standardized process of "disinfection first and then packaging" has significant defects in actual operation: if the whole process is not completed in a professional purification and disinfection workshop, the risk of secondary pollution caused by the packaging link after the disinfection of a set of tableware (including disposable ones) may occur, and the hygienic quality of the final product is difficult to be effectively guaranteed; for tableware after high-temperature steam disinfection, the commonly used method of regular sampling inspection in the industry can only intermittently evaluate the residual of disinfection agent and the microbial limit. This passive and lagging quality monitoring mode has obvious hygienic and safety hazards and cannot ensure that the disinfection quality of each product leaving the factory meets the national standard requirements. Summary of the Invention

[0003] The purpose of the present invention is to provide a physical indicator dedicated to high-temperature steam disinfection process and its processing method to solve the problems raised in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A physical indicator dedicated to high-temperature steam disinfection process, including: a lower tube body, with a first accommodation cavity having an open top in the middle of its interior, and a discoloring material filled in the first accommodation cavity; A middle tube body, whose bottom is screwed onto the outer wall of the top end of the lower tube body. There is a mesh partition inside the middle tube body, and the mesh partition fits and stops against the top end of the lower tube body. The top area of the mesh partition is a second accommodation cavity, and a moisture absorption sheet is filled in the second accommodation cavity. The thickness of the moisture absorption sheet is the same as the depth of the second accommodation cavity; the middle part of the mesh partition is relatively communicated above the first accommodation cavity; A cap, which is press-fitted onto the outer wall of the top of the middle tube body, and there is an air hole for steam to enter on the top surface of the cap; A breathable film, which covers the outer wall of the top of the middle tube body to seal the middle tube body. The breathable film is placed between the cap and the middle tube body. The breathable film is used to increase the connection tightness between the cap and the middle tube body and allow the steam to penetrate and contact the moisture absorption sheet; the breathable film is also used as the packaging material for a set of tableware. When high-temperature steam disinfects the packaged set of tableware, the moisture absorption sheet gradually dissolves under the action of water vapor and high temperature, enabling the steam to pass through the breathable film and contact the discoloring material, and the color of the discoloring material can indicate the disinfection effect of the set of tableware.

[0005] Further, a threaded groove is provided on the inner wall of the middle tube body, and the threaded groove is located below the mesh partition plate. The outer diameter of the lower tube body is the same as that of the middle tube body. A convex ring is provided at the top end of the lower tube body, and the inner diameter of the convex ring is the same as the inner diameter of the first accommodating cavity. The convex ring is screwed into the threaded groove and abuts against the bottom surface of the mesh partition plate; a recovery ring groove is provided on the top surface of the convex ring; first clamping grooves are symmetrically provided at the bottom of the outer wall of the middle tube body, and the bottom of the first clamping groove is an open structure; second clamping grooves are symmetrically provided on the outer wall of the lower tube body, and both ends of the second clamping groove are open structures.

[0006] Further, the thickness of the moisture absorption sheet is 0.6 - 1.8 mm.

[0007] Further, the thickness of the breathable film covering the middle tube body is 60 - 90 µm.

[0008] A processing method for a physical indicator dedicated to a high-temperature steam sterilization process, the processing method comprising the following steps: S1. Prepare raw materials, the raw materials including a moisture absorption sheet, a breathable coil, a lower tube body, a middle tube body, and a cap; the formula composition of the moisture absorption sheet includes 60 - 73% of main materials, 16 - 19% of auxiliary materials, 6 - 9% of adhesives, 9 - 12% of glidants, and the balance is a coating agent; S2. Assemble the raw materials into a physical indicator by a processing device: S2.1. Fill the second accommodating cavity of the middle tube body with the moisture absorption sheet and fill the first accommodating cavity of the lower tube body with a discoloring material; S2.2. Move the middle tube body and the lower tube body below the cap and on the same center line. Place the cap above the breathable coil, place the middle tube body below the breathable coil, and place the lower tube body below the middle tube body; S2.3. Keep the middle tube body stationary, lower the cap to be assembled above the middle tube body and cut out a breathable film on the breathable film coil, and lift the lower tube body and screw it onto the lower part of the middle tube body to assemble into a physical indicator.

[0009] Further, the main material of the moisture absorption sheet is any one of α-D glucose, maltose, and sucrose; the auxiliary material is polyethylene glycol 6000; the adhesive is any one of sodium carboxymethylcellulose, copovidone, and sorbitol; the glidant is any one of fumed silica, sodium stearyl fumarate, starch-based glidant, and glyceryl behenate; the coating agent is a pectin / chitosan composite system or a polylactic acid / polycaprolactone blend system.

[0010] Further, the preparation method of the moisture absorption sheet comprises the following steps: mixing each component material together roughly according to the formula ratio; putting the roughly mixed material into a swing crusher for crushing; putting the crushed material into a ball mill for sufficient grinding; sieving the ground powder material with a 300-mesh sieve to obtain the usable powder material; pressing the powder material into a sheet with a tablet press; putting the sheet without floating powder into a coating pan for coating to make the moisture absorption sheet; the number of coating times can be one, two or more according to the disinfection parameter requirements.

[0011] Further, the processing device comprises a column, a first feeding component, a second feeding component, a film material storage component and a covering component. A horizontally arranged first driving rod is vertically provided on the side wall of the column. The output end of the first driving rod is connected to a vertical plate. A first horizontal toothed plate is arranged at the top end of the vertical plate, and a second horizontal toothed plate is arranged at the bottom end thereof. The first feeding component and the second feeding component are arranged on the inner wall of the column. The first feeding component is located above the second feeding component. The first feeding component is used for grasping the middle tube body carrying the moisture absorption sheet, and the second feeding component is used for grasping the lower tube body carrying the discoloring material. The first horizontal toothed plate drives the first feeding component to rotate, and the second horizontal toothed plate drives the second feeding component to rotate. The film material storage component is located above the first feeding component, and the covering component is located above the film material storage component.

[0012] Further, the covering component comprises a rear seat body which is rotatably arranged at the top end of the column. A top telescopic plate is arranged on the side wall of the rear seat body. A second driving rod is vertically arranged at the bottom surface of the outer end of the top telescopic plate. The bottom end of the second driving rod is connected to a centralized plate. Two sliding rods are vertically arranged at both ends of the bottom surface of the centralized plate, and a first spring rod is arranged in the middle of the bottom surface thereof. The bottom end of the first spring rod is connected to a die box. The inside of the die box is a storage cavity. A cutting ring is arranged inside the storage cavity. A retaining ring is arranged on the outer wall of the top end of the cutting ring. The sliding rods penetrate through the die box slidably and the bottom ends thereof are connected to the retaining ring. A plurality of groups of second spring rods are arranged on the top surface of the retaining ring.

[0013] Further, an adjusting cavity is formed above the middle of the storage cavity. A bidirectional screw rod is installed inside the adjusting cavity. Adjusting blocks are symmetrically arranged on the outer walls of both ends of the bidirectional screw rod. The adjusting blocks slide in the adjusting cavity. A clamping ring is arranged on the bottom surface of the adjusting block. The clamping ring is located above the retaining ring. The cap is fitted and inserted into the cutting ring and the top surface of the cap abuts against the inner top surface of the storage cavity. The clamping ring is used for clamping and positioning the cap.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The core value of the present invention lies in realizing the technological innovation of "packaging first and then disinfection", which has changed the disinfection mode of traditional tableware (drinking utensils). After the invention technology is applied and promoted, the disinfection process will be carried out after packaging, enabling the tableware (drinking utensils) to complete the terminal disinfection in a completely sealed state, fundamentally eliminating the risk of secondary pollution that may be caused in the packaging link after disinfection in the traditional process. This technological innovation not only simplifies the production process and reduces the strict requirements for the cleanliness of the packaging environment, but more importantly, it realizes a leapfrog upgrade from process control to terminal quality assurance, enabling the disinfection effect of each set of tableware (drinking utensils) to be finally verified. This technology conforms to the preventive control concept of the HACCP system, establishing a traceable terminal disinfection quality assurance system for the catering industry, and having significant industry reform significance and application value.

[0015] 2. The innovative use of color-changing silica gel as a visual carrier enables the obvious color change of the color-changing silica gel to allow the manufacturers of complete sets of tableware (drinking utensils) and end consumers to identify whether the disinfection of the tableware (drinking utensils) is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic structural diagram of the special physical indicator for the high-temperature steam disinfection process of the present invention; Figure 2 Schematic side cross-sectional structure diagram of the indicator of the present invention; Figure 3 Schematic structural diagram of the processing device of the indicator of the present invention; Figure 4 Schematic structural diagram of the assembled part of the processing device of the present invention; Figure 5 Schematic structural diagram of the first feeding component and the second feeding component of the present invention; Figure 6 Schematic structural diagram of the butt joint between the lower pipe body and the support seat of the present invention; Figure 7 Schematic structural diagram of the butt joint between the middle pipe body and the support ring of the present invention; Figure 8 Schematic cross-sectional structure diagram of the first perspective of the mold box of the present invention; Figure 9 Schematic cross-sectional structure diagram of the other perspective of the mold box of the present invention; Figure 10 Schematic structural diagram of the film material storage component of the present invention.

[0017] Figure 11 Schematic structural diagram of the restraint plate of the present invention.

[0018] Reference Signs: 100, indicator, 110, lower tube, 111, convex ring, 112, recovery ring groove, 113, second slot, 114, first accommodating chamber, 120, middle tube, 121, first slot, 122, mesh partition, 123, second accommodating chamber, 124, threaded groove, 130, cap, 131, air hole, 140, breathable membrane, 200, moisture-absorbing sheet, 300, color-changing silica gel particles, 400, column, 410, first driving rod, 420, vertical plate, 430, first Horizontal tooth plate, 440, second horizontal tooth plate, 500, first feeding assembly, 510, first rotating column, 511, first support seat, 512, second support seat, 513, first gear, 520, first horizontal support plate, 530, support ring, 531, first block, 532, annular groove, 600, second feeding assembly, 610, second rotating column, 611, third support seat, 612, fourth support seat, 613, second gear, 620, second horizontal support plate, 630, third drive Rod, 631, rotary motor, 640, bracket, 641, second clamping block, 700, film material storage assembly, 710, guide rail, 711, moving seat, 720, end plate, 721, oblique moving groove, 730, two-way driving rod, 731, constraint plate, 732, vertical moving groove, 740, guide column, 741, guide block, 750, film placing wheel frame, 760, film collecting wheel frame, 770, breathable coil, 800, cover assembly, 810, rear seat, 820, top telescopic plate, 830 , second driving rod, 840, concentrating plate, 841, first spring rod, 842, sliding rod, 850, mold box, 851, storage chamber, 852, adjusting chamber, 860, bidirectional screw, 861, adjusting block, 862, clamping ring, 870, cutting ring, 871, retaining ring, 872, second spring rod, 910, unloading conveyor belt, 911, receiving box, 920, first loading conveyor belt, 921, receiving block, 930, second loading conveyor belt, 940, third loading conveyor belt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example:

[0020] like Figure 1 - Figure 2 As shown, in order to solve the problem of sterilization before packaging, a physical indicator dedicated to high-temperature steam sterilization process is provided, including: The lower tube body 110 has a first accommodating cavity 114 with a top opening in the middle thereof, and the first accommodating cavity 114 is filled with a color-changing material; The middle tube body 120 is screwed at the bottom to the outer wall of the top end of the lower tube body 110. A mesh partition 122 is provided inside the middle tube body 120. The mesh partition 122 fits and stops at the top end of the lower tube body 110. The top area of the mesh partition 122 is the second accommodation cavity 123, and a moisture absorption sheet 200 is filled inside the second accommodation cavity 123. A first through hole is formed in the middle of the mesh partition 122, and the first through hole is relatively communicated above the first accommodation cavity 114. The cap 130 is covered on the outer wall of the top of the middle tube body 120, and a gas hole 131 for steam to enter is formed on the top surface of the cap 130. The breathable film 140 covers the outer wall of the top of the middle tube body 120 to seal the middle tube body 120. The breathable film 140 is placed between the cap 130 and the middle tube body 120. The breathable film 140 is used to increase the connection sealing performance between the cap 130 and the middle tube body 120 and enable the steam to penetrate and contact the moisture absorption sheet 200. The breathable film 140 is also used as the packaging material for the set of tableware. When the high-temperature steam disinfects the packaged set of tableware, the moisture absorption sheet 200 gradually dissolves under the action of water vapor and high temperature, so that the steam passes through the breathable film 140 and contacts the discoloring material, and the color of the discoloring material can indicate the disinfection effect of the set of tableware.

[0021] In the above solution: 1. Using the breathable film 140 to wrap the set of tableware can ensure that when the packaged tableware is steam disinfected, the steam can pass through the breathable film 140 to disinfect the tableware, and at the same time, the steam can enter the second accommodation cavity 123 of the middle tube body 120 through the gas hole 131. 2. Using the breathable film 140 to wrap the middle tube body 120 can not only increase the connection sealing performance between the cap 130 and the middle tube body 120, prevent the cap 130 from loosening from the middle tube body 120, but also play a certain degree of isolation effect to prevent large external particles from entering the second accommodation cavity 123, ensuring that only high-temperature steam can pass through the breathable film 140. At the same time, the breathable film 140 can restrain and position the moisture absorption sheet 200 to prevent the moisture absorption sheet 200 from shifting. 3. Designing the dissolvable moisture absorption sheet 200, the moisture absorption sheet 200 can only dissolve after being impacted by high-temperature water vapor for a specified time, so that the high-temperature steam can contact the discoloring material, and the discoloring of the discoloring material can indicate the steam disinfection effect. After the steam disinfection is completed, the factory quality inspection personnel only need to observe the color of the discoloring material to judge whether the set of tableware is disinfected qualified, realizing packaging first and then disinfection, and the disinfection result can be accurately grasped. When using the set of tableware, the user can understand the disinfection status of the set of tableware through the indicator, making the user feel more at ease when using.

[0022] 4. Design The physical indicator 100 is assembled from a lower tube 110, a middle tube 120, and a cap 130. The lower tube 110 and the middle tube 120 store the moisture-absorbing sheet 200 and the color-changing material respectively, which is easy to assemble and also convenient for adding materials. 5. The design of the mesh partition 122 has the following effects: 5.1. The mesh partition 122 can block the color-changing material to prevent the color-changing material from overflowing into the first accommodating chamber 114 during assembly; at the same time, it can also stop the lower tube body 110 during assembly, making assembly easier and more accurate; 5.2. The mesh partition 122 can prevent the color-changing material from flowing out into the first accommodating cavity 114 when the moisture-absorbing sheet 200 dissolves; 5.3. When the moisture absorbent sheet 200 dissolves into liquid, the liquid can be dispersed into the holes and grooves of the grid partition, and the holes and grooves located at the edge can temporarily store the liquid. This part of the liquid will not flow into the first accommodating cavity 114, thereby preventing the dissolved liquid from occupying the space of the first accommodating cavity 114 and affecting the color change of the color-changing particles when they come into contact with high-temperature steam.

[0023] As an embodiment, a thread groove 124 is provided on the inner wall of the middle tube body 120, and the thread groove 124 is located below the mesh partition 122. The outer diameter of the lower tube body 110 is the same as the outer diameter of the middle tube body 120. A convex ring 111 is provided on the top of the lower tube body 110, and the inner diameter of the convex ring 111 is the same as the inner diameter of the first accommodating chamber 114. The convex ring 111 is screwed into the thread groove 124 and stopped on the bottom surface of the mesh partition 122; a recovery ring groove 112 is provided on the top surface of the convex ring 111; a first card groove 121 is symmetrically provided on the bottom of the outer wall of the middle tube body 120, and the bottom of the first card groove 121 is an open structure; a second card groove 113 is symmetrically provided on the outer wall of the lower tube body 110, and both ends of the second card groove 113 are open structures.

[0024] In the above scheme: the dissolved liquid temporarily stored at the edge of the mesh partition 122 can fall into the recovery ring groove 112, thereby increasing the storage space; The provision of the first card slot 121 and the second card slot 113 can achieve the following effects: facilitate the transfer and positioning of the indicator during assembly; and facilitate the positioning of the indicator during packaging.

[0025] When the protruding ring 111 is screwed into the thread groove 124 , the protruding ring 111 can contact the mesh partition plate 122 , so that the lower tube body 110 can be screwed into place accurately and quickly.

[0026] As an embodiment, the breathable membrane 140 covering the middle tube body 120 has a thickness of 60-90 µm; the breathable membrane 140 is exemplarily any one of CPP, RCP, modified TPU, modified PP, and ePTFE. The material of the breathable membrane 140 is not limited to the above examples, and other environmentally friendly food materials can also be used.

[0027] As an embodiment, the color-changing material is color-changing silica gel particles 300. After being exposed to 100 °C for 10 minutes, the color-changing silica gel changes from blue to pink, indicating that the disinfection level is qualified and meets the standard.

[0028] As an embodiment, the shape of the indicator includes, but is not limited to, a cylindrical shape, a multi-prismatic shape, or other regular geometric shapes; exemplary multi-prismatic shapes include: triangular prism, square prism, pentagonal prism, and hexagonal prism.

[0029] In order for the moisture-absorbing sheet 200 to be fully dissolved only after being exposed to 100 °C for 10 minutes, causing the color-changing material to change color, the following is the formula and preparation process of the moisture-absorbing sheet 200: Composition of the moisture-absorbing sheet 200 formula: 60 - 73% of the main material, 16 - 19% of the auxiliary material, 6 - 9% of the binder, 9 - 12% of the glidant, and the balance is the coating agent; the main material of the moisture-absorbing sheet 200 is any one of α-D glucose, maltose, and sucrose; the auxiliary material is polyethylene glycol 6000; the binder is any one of sodium carboxymethylcellulose, copovidone, and sorbitol; the glidant is any one of fumed silica, sodium stearyl fumarate, starch-based glidant, and glyceryl behenate; the coating agent is a pectin / chitosan composite system or a polylactic acid / polycaprolactone blend system; Preparation process of the moisture-absorbing sheet 200: 1) According to the formula ratio, roughly mix each component material together; 2) Put the roughly mixed material into a swing mill for grinding; 3) Put the ground material into a ball mill for sufficient grinding for 6 hours; 4) Use a 300-mesh sieve to screen the ground powder material to obtain usable powder; 5) Use a tablet press to press the powder into sheets (usually circular, but not limited to circular, and can be oval, triangular, square, or other regular geometric shapes), with a thickness between 0.6 - 1.8 mm; 6) Place the tablet core without floating powder in a coating pan for coating to make tablets. The number of coating times can be one, two, or multiple times according to the disinfection parameter requirements.

[0030] The processing method of the special physical indicator 100 for high-temperature steam disinfection process includes the following steps: S1. Prepare raw materials, including the moisture-absorbing sheet 200, the breathable coil 770, the lower tube body 110, the middle tube body 120, and the cap 130; the production formula of the moisture-absorbing sheet 200 is: main material: maltose, content 66%; auxiliary material: polyethylene glycol 6000, content 16%; binder: sodium carboxymethylcellulose, content 9%; glidant: fumed silica, content 9%; coating agent: pectin / chitosan composite system; the breathable coil 770 is made of 60-micron-thick CPP material; S2. The processing device assembles the raw materials into the physical indicator 100: S2.1. Fill the moisture-absorbing sheet 200 into the second accommodation cavity 123 of the middle tube body 120, and fill the color-changing material into the first accommodation cavity 114 of the lower tube body 110; S2.2. The middle tube body 120 and the lower tube body 110 move below the cap 130 and are located on the same center line. The cap 130 is placed above the breathable coil 770, the middle tube body 120 is placed below the breathable coil 770, and the lower tube body 110 is placed below the middle tube body 120; S2.3. The middle tube body 120 remains stationary. The cap 130 descends and is assembled above the middle tube body 120 and cuts out the breathable film 140 on the breathable film 140 coil. The lower tube body 110 is lifted and screwed onto the lower part of the middle tube body 120 to assemble the physical indicator 100; S2.4. The physical indicator 100 is lifted and unloaded.

[0031] As Figure 3 - Figure 11 shown, the processing device for the physical indicator 100 dedicated to the high-temperature steam disinfection process includes: A column 400, a first feeding assembly 500, a second feeding assembly 600, a film material storage assembly 700, and a covering assembly 800. A horizontally arranged first driving rod 410 is vertically provided on the side wall of the column 400. The output end of the first driving rod 410 is connected to a vertical plate 420. A first horizontal toothed plate 430 is provided at the top end of the vertical plate 420, and a second horizontal toothed plate 440 is provided at the bottom end. The inner wall of the column 400 is provided with the first feeding assembly 500 and the second feeding assembly 600. The first feeding assembly 500 is located above the second feeding assembly 600. The first feeding assembly 500 is used to grab the middle tube body 120 carrying the moisture-absorbing sheet 200, and the second feeding assembly 600 is used to grab the lower tube body 110 carrying the color-changing material. The first horizontal toothed plate 430 drives the first feeding assembly 500 to rotate, and the second horizontal toothed plate 440 drives the second feeding assembly 600 to rotate. The film material storage assembly is located above the first feeding assembly 500, and the covering assembly 800 is located above the film material storage assembly.

[0032] To enable the first loading component 500 to achieve rapid transfer of the middle pipe body 120, the following solution is provided: The first loading component 500 includes a first support base 511, a first rotating column 510, and a second support base 512. The top end of the first rotating column 510 is rotatably connected to the first support base 511, and the bottom end is rotatably connected to the second support base 512. The first support base 511 and the second support base 512 are perpendicularly arranged on the side wall of the column 400. A first gear 513 is provided on the outer wall of the first rotating column 510, and one side of the first gear 513 is meshed and connected to the first horizontal toothed plate 430; A first horizontal support plate 520 is fixedly provided on the outer wall of the first rotating column 510. A support ring 530 is provided at the end of the first horizontal support plate 520. First clamping blocks 531 are symmetrically provided at the bottom of the inner wall of the support ring 530. A circumferential cutting groove 532 is formed at the top of the inner wall of the support ring 530. When the middle pipe body 120 is placed in the support ring 530, the first clamping blocks 531 are inserted into the first clamping grooves 121.

[0033] To enable the second loading component 600 to achieve rapid transfer of the lower pipe body 110, the following solution is provided: The second loading component 600 includes a third support base 611, a second rotating column 610, and a fourth support base 612. The top end of the second rotating column 610 is rotatably connected to the third support base 611, and the bottom end is rotatably connected to the fourth support base 612. The third support base 611 and the fourth support base 612 are perpendicularly arranged on the side wall of the column 400. A second gear 613 is provided on the outer wall of the second rotating column 610, and the other side of the second gear 613 is meshed and connected to the second horizontal toothed plate 440. A second horizontal support plate 620 is fixedly provided on the outer wall of the second rotating column 610. A third driving rod 630 is provided on the top surface of the end of the second horizontal support plate 620. A rotating motor 631 is provided at the top of the third driving rod 630. The output end of the rotating motor 631 is connected to a support seat 640. A placement groove is formed in the middle of the support seat 640. Second clamping blocks 641 are symmetrically provided on the inner wall of the placement groove. When the lower pipe body 110 is placed in the support seat 640, the second clamping blocks 641 are inserted into the second clamping grooves 113.

[0034] The working processes of the above-mentioned first loading component 500 and second loading component 600 are as follows: The first loading component 500 and the second loading component 600 rotate in opposite directions. When taking materials, the first driving rod 410 extends outwards, thereby driving the vertical plate 420 to move inwards. The first horizontal toothed plate drives the first gear 513 to rotate, and the second horizontal toothed plate drives the second gear 613 to rotate, so that the first horizontal support plate 520 and the second horizontal support plate 620 rotate synchronously and in opposite directions; A manipulator or a worker takes the middle pipe body 120 with the moisture absorption sheet 200 installed from the third loading conveyor belt 940, and then places it in the support ring 530. The first clamping blocks 531 are clamped into the first clamping grooves 121. The first clamping blocks 531 support and position the middle pipe body 120, and the top of the middle pipe body 120 extends out of the support ring 530; A manipulator or worker removes the lower tube body 110 filled with discoloring silica gel particles 300 from the second loading conveyor belt 930, and then places it in the support 640. The lower tube body 110 is inserted into the placement groove, and the second block 641 is inserted into the second card slot 113. The second block 641 restricts and positions the lower tube body 110, and the top of the lower tube body 110 extends out of the support 640. After the material taking is completed, the first driving rod 410 retracts inward to drive the first and second transverse toothed plates to move, and further drive the first and second transverse support plates 520 and 620 to rotate inward. The top surface of the middle tube body 120 fits against the bottom surface of the breathable coil material 770, and the lower tube body 110 is placed directly below the middle tube body 120. After the cap 130 is fully closed, the third driving rod 630 drives the screwing motor 631 to lift. At the same time, the screwing motor 631 drives the support 640 to rotate, so that the convex ring 111 is screwed into the threaded groove 124 of the middle tube body 120, and the top end of the convex ring 111 abuts against the mesh partition plate 122.

[0035] Since the breathable film 140 is small, it is very inconvenient to separately cut and manufacture the breathable film 140 from the breathable coil material 770 and then cover it on the middle tube body 120. To solve the above problems, the following solution is given: The film material storage assembly 700 includes a film release wheel frame 750, a film take-up wheel frame 760, an end plate 720 and a moving seat 711. The moving seat 711 is slidably installed on the top of the guide rail 710. A bidirectional driving rod 730 is provided on the top of the moving seat 711. An end plate 720 is provided at the end of the moving seat 711. Oblique moving grooves 721 are symmetrically formed on the inner wall of the end plate 720. One end of the breathable coil material 770 is wound around the film release wheel frame 750, and the other end is wound around the film take-up wheel frame 760. The two ends of the bidirectional driving rod 730 are connected to the film release wheel frame 750 and the film take-up wheel frame 760. The film release wheel frame 750 and the film take-up wheel frame 760 are slidably placed in the oblique moving grooves 721. The two ends of the bidirectional driving rod 730 are connected to the constraint plates 731. Vertical moving grooves 732 are formed on the inner wall of the constraint plates 731. Guide blocks 741 are vertically and slidably embedded in the vertical moving grooves 732. Guide columns 740 are connected to the side walls of the guide blocks 741. The guide columns 740 penetrate through the oblique moving grooves 721 and the ends are connected to the film release wheel frame 750 or the film take-up wheel frame 760. The working process of the film material storage assembly 700 is as follows: Before the first loading assembly 500 needs to rotate, the moving seat 711 moves outward along the guide rail 710, so that the film release wheel frame 750 and the film take-up wheel frame 760 move outward, thereby leaving a space for the first loading assembly 500 to rotate.

[0036] In the initial state, the film release wheel frame 750 releases the breathable coil material 770, and then winds it onto the film take-up wheel frame 760. The breathable coil material 770 is in a taut state, and the top surface of the middle tube body 120 first fits against the bottom surface of the taut breathable coil material 770. When the covering component 800 covers the cap 130, the bidirectional driving rod 730 drives the restraint plate 731 to move inwards, the guide block 741 moves vertically along the vertical moving groove 732, and the guide post 740 moves along the inclined moving groove 721, so that the film releasing wheel frame 750 and the film winding wheel frame 760 synchronously tilt and move inwards and downwards. At this time, the breathable film 140 material can be released from the tight state and covered on the middle pipe body 120, avoiding the influence of the pulling of the breathable coil material 770 on the covering effect, and at the same time, a full - range covering can be realized.

[0037] To synchronously solve the automatic covering of the cap 130 and the rapid feeding of the manufactured physical indicator 100, the following solution is given: The covering component 800 includes a rear seat body 810, the rear seat body 810 is rotatably arranged at the top of the column 400, a top telescopic plate 820 is arranged on the side wall of the rear seat body, a second driving rod 830 is vertically arranged at the bottom surface of the outer end of the top telescopic plate 820, the bottom end of the second driving rod 830 is connected to a central plate 840, two sliding rods 842 are vertically arranged at both ends of the bottom surface of the central plate 840, and a first spring rod 841 is arranged in the middle of the bottom surface. The bottom end of the first spring rod 841 is connected to a die box 850. The inside of the die box 850 is a storage cavity 851. A cutting ring 870 is arranged inside the storage cavity 851. A retaining ring 871 is arranged on the outer wall of the top end of the cutting ring 870. The sliding rod 842 slidably penetrates through the die box 850 and its bottom end is connected to the retaining ring 871. A plurality of second spring rods 872 are arranged on the top surface of the retaining ring 871. An adjusting cavity 852 is opened above the middle of the storage cavity 851. A bidirectional screw rod 860 is installed inside the adjusting cavity 852. Adjusting blocks 861 are symmetrically arranged on the outer walls of both ends of the bidirectional screw rod 860. The adjusting blocks 861 are slidably placed in the adjusting cavity 852. A clamping ring 862 is arranged on the bottom surface of the adjusting block 861. The clamping ring 862 is located above the retaining ring 871; The cap 130 is fitted and inserted into the cutting ring 870 and the top surface of the cap 130 abuts against the inner top surface of the storage cavity 851. The clamping ring 862 is used to clamp and position the cap 130.

[0038] During covering: The first step: The second driving rod 830 drives the central plate 840 to descend once, the cap 130 is covered outside the middle pipe body 120, the die box 850 abuts against the surface of the supporting ring 530, the breathable coil material 770 is placed between the cap 130 and the middle pipe body 120. Then the second driving rod 830 drives the central plate 840 to descend a second time, the first spring rod 841 contracts, the sliding rod 842 slides downwards and pushes the cutting ring 870 to move downwards and stretches the second spring rod 872. The cutting ring 870 extends into the cutting groove 532 of the supporting ring 530 and cuts out a circular breathable film 140; After the cap 130 is covered, the lower pipe body 110 is screwed into the middle pipe body 120; Step 2: The second driving rod 830 contracts and drives the cap 130 to lift. Since the cap 130 has been interference-fitted on the middle tube body 120, when the cap 130 lifts, it can drive the middle tube body 120 and the lower tube body 110 to lift accordingly. The assembled indicator 100 passes through the cut hole of the breathable coil material 770, realizing the automatic blanking of the indicator 100. Step 3: The motor drives the rear seat body to rotate, so that the top telescopic plate 820 rotates to the blanking conveyor belt 910. The second driving rod 830 drives the indicator 100 to descend, so that the indicator 100 is inserted into the receiving box 911 of the blanking conveyor belt 910. Then, the bidirectional screw rod 860 drives the adjusting block 861 to move outward along the adjusting cavity 852, and the two groups of clamping rings 862 are separated, so that the clamping ring 862 is separated from the cap 130; the indicator 100 can be transferred into the receiving box 911. Subsequently, the top telescopic plate 820 extends outward, so that the die box 850 moves onto the first feeding conveyor belt 920. The die box 850 covers the cap 130, and the bidirectional screw rod 860 rotates to drive the clamping ring 862 to approach and clamp the cap 130, realizing the automatic grasping of the cap 130, so that the cap 130 is separated from the receiving block 921 of the first feeding conveyor belt 920.

[0039] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A physical indicator dedicated to the high-temperature steam disinfection process, characterized in that, Comprising: A lower tube body, with a first accommodation cavity having an open top in the middle of its interior, and a color-changing material is filled in the first accommodation cavity; A middle tube body, whose bottom is screwed onto the outer wall of the top end of the lower tube body. There is a mesh partition inside the middle tube body, and the mesh partition fits and stops at the top end of the lower tube body. The top area of the mesh partition is the second accommodation cavity, and a moisture-absorbing sheet is filled inside the second accommodation cavity. The thickness of the moisture-absorbing sheet is the same as the depth of the second accommodation cavity; The middle part of the mesh partition communicates relatively above the first accommodation cavity; A cap, which is press-fitted onto the outer wall of the top of the middle tube body, and an air hole for steam to enter is opened on the top surface of the cap; A breathable film, which covers the outer wall of the top of the middle tube body to seal the middle tube body. The breathable film is placed between the cap and the middle tube body. The breathable film is used to increase the connection tightness between the cap and the middle tube body and enable the steam to penetrate and contact the moisture-absorbing sheet; The breathable film is also used as the packaging material for the set of tableware; When high-temperature steam disinfects the packaged set of tableware, the moisture-absorbing sheet gradually dissolves under the action of water vapor and high temperature, enabling the steam to pass through the breathable film and contact the color-changing material, and the color of the color-changing material can indicate the disinfection effect of the set of tableware.

2. The physical indicator dedicated to the high-temperature steam disinfection process according to claim 1, characterized in that: Threaded grooves are provided on the inner wall of the middle tube body, and the threaded grooves are located below the mesh partition. The outer diameter of the lower tube body is the same as the outer diameter of the middle tube body. A convex ring is provided at the top end of the lower tube body, and the inner diameter of the convex ring is the same as the inner diameter of the first accommodation cavity. The convex ring is screwed into the threaded groove and stops at the bottom surface of the mesh partition; A recovery ring groove is opened on the top surface of the convex ring; First card slots are symmetrically opened at the bottom of the outer wall of the middle tube body, and the bottom of the first card slots is an open structure; Second card slots are symmetrically opened on the outer wall of the lower tube body, and both ends of the second card slots are open structures.

3. The physical indicator dedicated to the high-temperature steam disinfection process according to claim 1, characterized in that: The thickness of the moisture-absorbing sheet is 0.6 - 1.8 mm.

4. The physical indicator dedicated to the high-temperature steam disinfection process according to claim 1, characterized in that: The breathable film covering the middle tube body has a thickness of 60 - 90 µm.

5. The processing method of the special physical indicator for the high-temperature steam disinfection process according to claim 1, characterized in that: The processing method includes the following steps: S1. Making raw materials, the raw materials include a moisture-absorbing sheet, a breathable coil, a lower tube body, a middle tube body, and a cap; The formula composition of the moisture-absorbing sheet includes 60 - 73% of the main material, 16 - 19% of the auxiliary material, 6 - 9% of the binder, 9 - 12% of the glidant, and the balance is the coating agent; S2. Assembling the raw materials into a physical indicator by a processing device: S2.

1. Filling the moisture-absorbing sheet into the second accommodation cavity of the middle tube body and filling the color-changing material into the first accommodation cavity of the lower tube body; S2.

2. Moving the middle tube body and the lower tube body below the cap and on the same center line. The cap is placed above the breathable coil, the middle tube body is placed below the breathable coil, and the lower tube body is placed below the middle tube body; S2.

3. Keeping the middle tube body stationary, lowering the cap to be assembled above the middle tube body and cutting out the breathable film on the breathable film coil, and lifting the lower tube body to be screwed onto the lower part of the middle tube body to assemble into a physical indicator.

6. The processing method of the special physical indicator for high-temperature steam disinfection process according to claim 5, characterized in that: The main material of the moisture-absorbing sheet is any one of α-D-glucose, maltose, and sucrose; the auxiliary material is polyethylene glycol 6000; the binder is any one of sodium carboxymethylcellulose, copovidone, and sorbitol; the glidant is any one of fumed silica, sodium stearyl fumarate, starch-based glidant, and glyceryl behenate; the coating agent is a pectin / chitosan composite system or a polylactic acid / polycaprolactone blend system.

7. The processing method of the special physical indicator for high-temperature steam disinfection process according to claim 6, characterized in that: The preparation method of the moisture absorption sheet comprises the following steps: mixing the component materials together roughly according to the formula ratio; putting the roughly mixed materials into a swing crusher for crushing; putting the crushed materials into a ball mill for sufficient grinding; using a 300-mesh sieve to screen the ground powder materials to obtain usable powder materials; using a tablet press to press the powder materials into sheet blocks; putting the sheet blocks with floating powder removed into a coating pan for coating to make moisture absorption sheets; the number of coating times can be one, two or more according to the requirements of disinfection parameters.

8. The processing method of the special physical indicator for the high-temperature steam disinfection process according to claim 7, characterized in that: The processing device comprises a column, a first feeding component, a second feeding component, a film material storage component and a covering component. A horizontally arranged first driving rod is vertically provided on the side wall of the column. The output end of the first driving rod is connected to a vertical plate. A first horizontal toothed plate is arranged at the top end of the vertical plate, and a second horizontal toothed plate is arranged at the bottom end thereof; the inner wall of the column is provided with the first feeding component and the second feeding component. The first feeding component is located above the second feeding component. The first feeding component is used for grasping the middle tube body carrying the moisture absorption sheet, and the second feeding component is used for grasping the lower tube body carrying the discoloring material. The first horizontal toothed plate drives the first feeding component to rotate, and the second horizontal toothed plate drives the second feeding component to rotate; the film material storage component is located above the first feeding component, and the covering component is located above the film material storage component.

9. The processing method of the special physical indicator for high-temperature steam disinfection process according to claim 8, characterized in that: The covering component comprises a rear seat body which is rotatably arranged at the top end of the column. A top telescopic plate is arranged on the side wall of the rear seat body. A second driving rod is vertically arranged at the bottom surface of the outer end of the top telescopic plate. The bottom end of the second driving rod is connected to a centralized plate. Two slide rods are vertically arranged at both ends of the bottom surface of the centralized plate, and a first spring rod is arranged in the middle of the bottom surface thereof. The bottom end of the first spring rod is connected to a die box. The inside of the die box is a storage cavity. A cutting ring is arranged inside the storage cavity. A retaining ring is arranged on the outer wall of the top end of the cutting ring. The slide rods slidably penetrate through the die box and the bottom ends thereof are connected to the retaining ring. A plurality of groups of second spring rods are arranged on the top surface of the retaining ring.

10. The processing method of the special physical indicator for high-temperature steam disinfection process according to claim 9, characterized in that: An adjusting cavity is formed above the middle of the storage cavity. A bidirectional screw rod is installed inside the adjusting cavity. Adjusting blocks are symmetrically arranged on the outer walls of both ends of the bidirectional screw rod. The adjusting blocks are slidably placed inside the adjusting cavity. A clamping ring is arranged at the bottom surface of the adjusting block. The clamping ring is located above the retaining ring; a cap is fitted and inserted into the cutting ring and the top surface of the cap abuts against the inner top surface of the storage cavity. The clamping ring is used for clamping and positioning the cap.

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