A steam degreasing apparatus for specimen preparation

Abstract

This application discloses a steam degreasing device for specimen preparation, relating to the field of specimen preparation technology. It includes: a reaction chamber; a mounting frame fixedly disposed at the bottom of the inner cavity of the reaction chamber; a steam pipe penetrating from the upper part of the side wall of the reaction chamber and extending downwards along its inner wall to the lower part of the inner cavity, then laid horizontally and passing through the mounting frame. Several air outlets are opened at a 45° elevation angle on the horizontal section of the steam pipe within the inner cavity, the air outlets being adapted to spray steam obliquely upwards; and a cover plate detachably disposed at the top of the reaction chamber. A stepped positioning mechanism is provided between the cover plate and the reaction chamber, which is suitable for step-by-step positioning of the cover plate relative to the reaction chamber during the closing process of the cover plate and the reaction chamber. The air outlets are set at a 45° elevation angle, and the steam is sprayed obliquely upwards, avoiding direct impact on the specimen, reducing local damage, and simultaneously creating turbulence to improve the uniform contact between the steam and the specimen, thus improving the uniformity of degreasing.

Description

Technical Field

[0001] This application relates to the field of specimen preparation technology, and in particular discloses a steam degreasing device for specimen preparation. Background Technology

[0002] In the process of preparing biological specimens, removing grease from the specimen tissue is a crucial step. Whether the grease is removed completely directly affects the preservation quality of the specimen and the effect of subsequent processing. Traditional grease removal methods mainly include chemical solvent soaking and manual scraping, but these methods have problems such as complicated operation, large solvent pollution, and easy damage to the specimen. In recent years, steam grease removal technology has been gradually applied due to its cleanliness, high efficiency, and minimal damage to the specimen.

[0003] Steam degreasing is a simple and efficient pretreatment process that uses high-temperature steam to liquefy and expel grease from tissues, thus cleaning the specimen. Existing steam degreasing devices typically include a reaction chamber, a mounting frame, and a steam inlet structure. The steam pipes are often directly horizontal or vertically positioned, with nozzles generally opening vertically downwards or horizontally. This arrangement can lead to concentrated steam flow impacting localized areas of the specimen, resulting in uneven degreasing and potentially causing physical damage to the specimen surface due to excessive steam impact. Furthermore, to ensure the reaction chamber's airtightness, the cover is usually designed to be quite thick and requires hydraulic or hoisting equipment for opening and closing. For example, during hoisting and closing, the lack of effective guidance between the cover and the chamber makes it difficult for operators to precisely control the cover's descent path and centering position, requiring repeated adjustments. This is not only inefficient but also prone to inaccurate alignment leading to poor sealing and affecting the degreasing effect. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this application is to provide a steam degreasing device for specimen preparation.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a steam degreasing device for specimen preparation, comprising: a reaction chamber; a mounting frame, the mounting frame being fixedly disposed at the bottom of the inner cavity of the reaction chamber; a steam pipe, the steam pipe being inserted through the upper part of the side wall of the reaction chamber and extending downward along its inner wall to the lower part of the inner cavity, then laid horizontally and passing through the mounting frame, the steam pipe having several air outlets at a 45° elevation angle on the horizontal section of the inner cavity, the air outlets being adapted to spray steam obliquely upward; a cover plate, the cover plate being detachably disposed at the top of the reaction chamber, a stepped positioning mechanism being provided between the cover plate and the reaction chamber, the stepped positioning mechanism being adapted to realize the step-by-step positioning of the cover plate relative to the reaction chamber during the closing process of the cover plate and the reaction chamber.

[0006] As a preferred embodiment, the steam pipe includes an inlet pipe, a branch pipe, a valve, and an outlet pipe. The inlet pipe is located outside the reaction chamber. The outlet pipe is horizontally located in the lower part of the inner cavity of the reaction chamber and passes through the mounting frame. The outlet hole is located on the outlet pipe. The branch pipe passes through the side wall of the reaction chamber and its two ends are respectively connected to the inlet pipe and the outlet pipe. The valve is installed on the branch pipe and located outside the reaction chamber.

[0007] More preferably, the air outlets are symmetrically arranged on the air outlet pipe, the axes of two corresponding air outlets are perpendicular to each other, and the air outlets are distributed in a linear array along the axial direction of the air outlet pipe.

[0008] Further preferably, the outer side of the air intake pipe is covered with heat-insulating cotton.

[0009] As a preferred embodiment, the stepped positioning mechanism includes a first positioning post, a second positioning post, a third positioning post, and positioning holes. The first and second positioning posts are located on the lower side of the cover plate near the air inlet pipe. There are two third positioning posts, located on the lower side of the cover plate away from the air inlet pipe. The length of the first positioning post is greater than the length of the second positioning post, and the length of the second positioning post is greater than the length of the third positioning post. The positioning holes are located at the upper end of the reaction chamber. There are four positioning holes in total, corresponding to the first positioning post, the second positioning post, and the two third positioning posts respectively. During the closing process of the cover plate and the reaction chamber, the first positioning post first engages with the corresponding positioning hole, then the second positioning post engages with the corresponding positioning hole, and finally the two third positioning posts engage with the corresponding positioning holes, thereby achieving step-by-step positioning of the cover plate relative to the reaction chamber.

[0010] Further preferably, the lower ends of the first positioning post, the second positioning post, and the third positioning post are all provided with a hemispherical guide structure or a chamfered guide structure, and the edges of the positioning holes are provided with a chamfered or rounded structure.

[0011] Further preferably, two lifting rings are installed on the upper surface of the cover plate, and the two lifting rings are arranged symmetrically about the central axis of the cover plate.

[0012] As a preferred embodiment, the mounting frame is a hollow cuboid frame structure, and several crossbars are provided on the upper side of the mounting frame for supporting the specimen to be prepared.

[0013] Further preferably, the crossbar has a triangular cross-section with its apex facing upwards, and the crossbar is adapted to reduce the contact area with the specimen and guide the liquefied oil flowing down the specimen.

[0014] As a preferred embodiment, a drain pipe is provided at the bottom of the reaction chamber, and a removable sealing cap is provided at the end of the drain pipe.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] (1) By setting the steam outlet of the horizontal section of the steam pipe to a 45° upward angle, the steam is sprayed obliquely upward, which effectively avoids the direct impact on the specimen surface of the traditional vertical or horizontal spraying method and reduces the physical damage of the steam to the specimen. At the same time, the steam sprayed obliquely upward forms turbulence in the reaction chamber, which improves the overall uniform contact between the steam and the specimen, thereby improving the uniformity of degreasing.

[0017] (2) This application has a stepped positioning mechanism, which can achieve step positioning during the closing process of the cover plate and the reaction chamber, effectively solving the problem of difficulty in aligning the heavy cover plate during hoisting and closing; at the same time, step positioning reduces the difficulty of operation for personnel, improves the installation efficiency and centering accuracy of the cover plate, avoids poor sealing caused by misalignment, and improves the convenience of operation and the safety of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is an exploded three-dimensional view of the present invention.

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the reaction chamber of this utility model.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the reaction chamber of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the steam pipe of this utility model.

[0023] Figure 6 This is a cross-sectional view of the steam outlet of the steam pipe of this utility model.

[0024] Figure 7 This is a three-dimensional structural diagram of the cover plate of this utility model.

[0025] Figure 8 This is a three-dimensional structural diagram of the mounting frame of this utility model.

[0026] In the diagram: 1. Reaction chamber; 11. Positioning hole; 12. Inner cavity; 2. Cover plate; 21. Lifting ring; 22. First positioning post; 23. Second positioning post; 24. Third positioning post; 3. Steam pipe; 31. Inlet pipe; 32. Branch pipe; 33. Valve; 34. Outlet pipe; 35. Outlet hole; 4. Drain pipe; 41. Sealing cover; 5. Mounting frame; 51. Crossbar. Detailed Implementation

[0027] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0029] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0031] A preferred embodiment of this application, such as Figures 1 to 8As shown, a steam degreasing device for specimen preparation includes: a reaction chamber 1; a mounting frame 5, which is fixedly installed at the bottom of the inner cavity 12 of the reaction chamber 1; a steam pipe 3, which is inserted through the upper part of the side wall of the reaction chamber 1 and extends downward along its inner wall to the lower part of the inner cavity 12, and then laid horizontally and passes through the mounting frame 5. The steam pipe 3 has several air outlets 35 at a 45° elevation angle on the horizontal section of the inner cavity 12, and the air outlets 35 are adapted to spray steam obliquely upward; a cover plate 2, which is detachably installed on the top of the reaction chamber 1. A stepped positioning mechanism is provided between the cover plate 2 and the reaction chamber 1. During the closing process of the cover plate 2 and the reaction chamber 1, the stepped positioning mechanism is adapted to realize the step-by-step positioning of the cover plate 2 relative to the reaction chamber 1.

[0032] This application sets the steam outlet 35 of the horizontal section of the steam pipe 3 at a 45° elevation angle, so that the steam is sprayed obliquely upward, which effectively avoids the direct impact on the specimen surface of the traditional vertical or horizontal spraying method and reduces the physical damage of the steam to the specimen. At the same time, the steam sprayed obliquely upward forms turbulence in the reaction chamber 1, which improves the comprehensive and uniform contact between the steam and the specimen, thereby improving the uniformity of degreasing. Specifically, this embodiment provides a feasible steam pipe 3 structure, which includes an inlet pipe 31, a branch pipe 32, a valve 33, and an outlet pipe 34. The inlet pipe 31 is located on the outside of the reaction chamber 1. The outlet pipe 34 is located horizontally in the lower part of the inner cavity 12 of the reaction chamber 1 and passes through the mounting frame 5. The outlet hole 35 is located on the outlet pipe 34. The branch pipe 32 passes through the side wall of the reaction chamber 1, and its two ends are connected to the inlet pipe 31 and the outlet pipe 34, respectively. The valve 33 is installed on the branch pipe 32 and located on the outside of the reaction chamber 1. The outlet holes 35 are symmetrically arranged on the outlet pipe 34, and the axes of the two corresponding outlet holes 35 are perpendicular to each other. The outlet holes 35 are distributed in a linear array along the axial direction of the outlet pipe 34.

[0033] The design of the vent 35 ensures that the steam is ejected to both sides at a 90° angle, avoiding direct impact on the specimen. Instead, the steam is directed towards the inner wall of the reaction chamber 1, creating a more uniform steam environment in the inner cavity 12. This allows for more even contact between the various parts of the specimen surface and the steam, achieving uniform removal of grease without localized impact damage. Consequently, the final quality of the specimen is improved, and its appearance is enhanced.

[0034] Furthermore, in order to ensure the temperature of external steam entering the reaction chamber 1 through the air inlet pipe 31, the outside of the air inlet pipe 31 is covered with heat insulation cotton, which not only keeps the steam inside the pipe warm, but also physically isolates the pipe wall of the air inlet pipe 31 from the operator's limbs, preventing the operator from being burned by directly touching the air inlet pipe 31.

[0035] This application provides a stepped positioning mechanism between the cover plate 2 and the reaction chamber 1, which enables distributed positioning. Operators do not need to precisely control the falling path and centering position of the cover plate 2, nor do they need repeated adjustments. Accurate closure of the cover plate 2 and reaction chamber 1 can be achieved simply by sequentially positioning them. This greatly reduces the difficulty of operation and improves operational efficiency. Specifically, this embodiment provides an achievable structure. The stepped positioning mechanism includes a first positioning post 22, a second positioning post 23, a third positioning post 24, and positioning holes 11. The first positioning post 22 and the second positioning post 23 are located on the lower side of the cover plate 2 near the air inlet pipe 31. There are two third positioning posts 24. The first positioning post 22 is positioned on the lower side of the cover plate 2 away from the air inlet pipe 31. The length of the first positioning post 22 is greater than the length of the second positioning post 23, and the length of the second positioning post 23 is greater than the length of the third positioning post 24. The positioning holes 11 are located at the upper end of the reaction chamber 1. There are four positioning holes 11, which correspond to the first positioning post 22, the second positioning post 23, and the two third positioning posts 24, respectively. During the closing process of the cover plate 2 and the reaction chamber 1, the first positioning post 22 first engages with the corresponding positioning hole 11, then the second positioning post 23 engages with the corresponding positioning hole 11, and finally the two third positioning posts 24 engage with the corresponding positioning hole 11, so as to realize the step-by-step positioning of the cover plate 2 relative to the reaction chamber 1.

[0036] Obviously, with the above structural design, the operator only needs to align the first positioning post 22 and the positioning hole 11. After they are aligned, the cover plate 2 is initially connected to the reaction chamber 1. Then, the angle of the cover plate 2 is adjusted so that the second positioning post 23 is aligned with the positioning hole 11. At this time, the cover plate 2 and the reaction chamber 1 are basically aligned, and the operator no longer needs to actively adjust the angle of the cover plate 2. The cover plate 2 continues to fall. During this process, the two third positioning posts 24 are pre-aligned with the corresponding positioning holes 11, and the cover plate 2 can directly achieve smooth closure with the reaction chamber 1. The operator does not need to make repeated adjustments to ensure alignment. Therefore, the above structure can reduce the difficulty of operation and improve the efficiency of operation.

[0037] Of course, in order to ensure a smooth connection between the cover plate 2 and the reaction chamber 1, the lower ends of the first positioning post 22, the second positioning post 23 and the third positioning post 24 are all provided with hemispherical guide structures or chamfered guide structures, and the edges of the positioning holes 11 are provided with chamfered or rounded corner structures. The advantage of this design is that during the last two third positioning posts 24 and the corresponding positioning holes 11, due to a certain gap deviation, the third positioning posts 24 and the positioning holes 11 may not be completely aligned. With the above structure, the hemispherical guide structure or the chamfered guide structure can automatically correct this deviation, so that the cover plate 2 closes smoothly without jamming.

[0038] Because the cover plate 2 is very heavy, a hydraulic crane is required for lifting. To facilitate the lifting of the cover plate 2, two lifting rings 21 are installed on the upper surface of the cover plate 2. The two lifting rings 21 are symmetrically arranged about the central axis of the cover plate 2.

[0039] In this embodiment, the mounting frame 5 is a hollow cuboid frame structure. Several crossbars 51 are provided on the upper side of the mounting frame 5. The crossbars 51 are used to support the specimen to be prepared. The cross-section of the crossbars 51 is triangular and its vertex is arranged upwards. The crossbars 51 are suitable for reducing the contact area with the specimen and guiding the liquefied grease flowing down the specimen. In the prior art, some of the crossbars 51 of the mounting frame 5 are also rectangular bars, which increases the contact area with the specimen. This part cannot fully contact the steam, which will lead to incomplete removal of grease from the specimen. At the same time, some liquefied grease is easy to remain on the upper surface of the crossbars 51. First, it further aggravates the insufficient contact between the specimen and the steam. Second, it may contaminate the specimen surface and affect the final quality of the specimen. Therefore, the crossbars 51 with triangular cross-sections and arranged with the vertex facing upwards in this application only have line contact with the specimen and the crossbars 51, which greatly reduces the contact area. At the same time, the two sides of the crossbars 51 are inclined, which can improve the guidance of grease and reduce retention and accumulation.

[0040] In this embodiment, a drain pipe 4 is provided at the bottom of the reaction chamber 1, and a detachable sealing cap 41 is provided at the end of the drain pipe 4. The liquid grease at the bottom of the reaction chamber 1 can be discharged smoothly through this sealing cap 41. Of course, in other embodiments, a switch valve can also be provided to discharge the liquid grease.

[0041] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A steam degreasing apparatus for specimen preparation, characterized by, include: Reaction chamber; A mounting frame is fixedly installed at the bottom of the inner cavity of the reaction chamber; A steam pipe is inserted through the upper part of the side wall of the reaction chamber and extends downward along its inner wall to the lower part of the inner cavity. It is then laid horizontally and passes through the mounting frame. The steam pipe has several air outlets at a 45° elevation angle on the horizontal section of the inner cavity. The air outlets are adapted to spray steam obliquely upward. A cover plate is detachably mounted on the top of the reaction chamber. A stepped positioning mechanism is provided between the cover plate and the reaction chamber. During the closing process of the cover plate and the reaction chamber, the stepped positioning mechanism is adapted to realize the step-by-step positioning of the cover plate relative to the reaction chamber.

2. A steam degreasing apparatus for specimen preparation as defined in claim 1, wherein, The steam pipe includes an inlet pipe, a branch pipe, a valve, and an outlet pipe. The inlet pipe is located outside the reaction chamber. The outlet pipe is horizontally located in the lower part of the inner cavity of the reaction chamber and passes through the mounting frame. The outlet hole is located on the outlet pipe. The branch pipe passes through the side wall of the reaction chamber and its two ends are respectively connected to the inlet pipe and the outlet pipe. The valve is installed on the branch pipe and located outside the reaction chamber.

3. A steam degreasing apparatus for specimen preparation as defined in claim 2, wherein, The air outlets are symmetrically arranged on the air outlet pipe, and the axes of two corresponding air outlets are perpendicular to each other. The air outlets are distributed in a linear array along the axial direction of the air outlet pipe.

4. A steam degreasing apparatus for specimen preparation as defined in claim 2, wherein The outside of the air intake pipe is covered with insulating cotton.

5. A steam degreasing apparatus for specimen preparation as defined in claim 2 wherein, The stepped positioning mechanism includes a first positioning post, a second positioning post, a third positioning post, and positioning holes. The first and second positioning posts are located on the lower side of the cover plate near the air inlet pipe. There are two third positioning posts, located on the lower side of the cover plate away from the air inlet pipe. The length of the first positioning post is greater than the length of the second positioning post, and the length of the second positioning post is greater than the length of the third positioning post. The positioning holes are located at the upper end of the reaction chamber. There are four positioning holes in total, corresponding to the first positioning post, the second positioning post, and the two third positioning posts respectively. During the closing process of the cover plate and the reaction chamber, the first positioning post first engages with the corresponding positioning hole, then the second positioning post engages with the corresponding positioning hole, and finally the two third positioning posts engage with the corresponding positioning holes, thereby realizing the step-by-step positioning of the cover plate relative to the reaction chamber.

6. A steam degreasing apparatus for specimen preparation as defined in claim 5, wherein The lower ends of the first positioning post, the second positioning post, and the third positioning post are all provided with a hemispherical guide structure or a chamfered guide structure, and the edges of the positioning holes are provided with chamfered or rounded corner structures.

7. A steam degreasing apparatus for specimen preparation as defined in claim 1, wherein Two lifting rings are installed on the upper surface of the cover plate, and the two lifting rings are arranged symmetrically about the central axis of the cover plate.

8. A steam degreasing apparatus for specimen preparation as defined in claim 1, wherein, The mounting frame is a hollow cuboid frame structure, and several crossbars are provided on the upper side of the mounting frame. The crossbars are used to support the specimen to be prepared.

9. A steam degreasing apparatus for specimen preparation as defined in claim 8, wherein, The crossbar has a triangular cross-section with its apex facing upwards. The crossbar is adapted to reduce the contact area with the specimen and to guide the liquefied oil flowing down the specimen.

10. A steam degreasing apparatus for specimen preparation as defined in claim 1, wherein, A drain pipe is provided at the bottom of the reaction chamber, and a removable sealing cap is provided at the end of the drain pipe.

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