A digestion tank applied to digestion of incense products

Abstract

The present application relates to incense field, especially to a kind of digestion tank applied to digestion of incense product, including outer tank and the inner tank nested in outer tank, the opening of the outer tank is outwardly extended and is provided with outer flange, the opening of the inner tank is outwardly extended and is provided with inner flange, the inner flange is placed on the upper end surface of outer flange, the upper end surface of outer flange is provided with outer sealing groove, the lower end surface of inner flange is provided with inner sealing groove, flange sealing ring is clamped between outer sealing groove and inner sealing groove, the opening of the inner tank is provided with plug body, plug flange is provided on the plug body, plug sealing pad is respectively provided on the upper and lower end surfaces of plug flange, the upper end surface of inner tank abuts plug sealing pad on plug flange lower end surface, a inverted T-shaped installation cavity is opened in the middle of plug body, one-way valve body structure for realizing airtightness is provided in the installation cavity. It solves the technical problem that the existing incense product has poor digestion effect.

Description

[0001] This case is a divisional application of the Chinese patent application No. 202210670417.3, entitled "A Method for Determining Heavy Metal Content in Incense Products by ICP-MS", filed on June 14, 2022. Technical Field

[0002] This invention relates to the field of incense, and more particularly to a digestion vessel for digesting incense products. Background Technology

[0003] Currently, Chinese Patent Publication No. CN114487082A discloses a sample pretreatment method for determining trace elements in milk powder, which includes the preparation of sample solutions and standard solutions; the preparation of magnetic Fe3O4 nanoparticles; the synthesis of octadecaneamine-functionalized mesoporous carbon composite materials; the synthesis of magnetic Fe3O4 nanoparticle-supported functionalized mesoporous carbon magnetic nanomaterials; and the selection of reference conditions for inductively coupled plasma mass spectrometry (ICP-MS). This invention uses a magnetic nanoparticle-supported bifunctionalized octadecaneamine-functionalized carbon nanotube nanocomposite material as a specific adsorbent combined with QuEChERS technology for sample pretreatment. The surface structure characteristics of this magnetic carbon nanocomposite material are characterized by X-ray diffraction and magnetometer techniques. The experimental conditions, including pH and salinity, are optimized, resulting in excellent adsorption performance, shortened pretreatment time, and the ability to eliminate matrix interference, achieving integrated enrichment and separation. However, during sample digestion, especially for some incense products, the digestion effect is often not ideal. The applicant has made corresponding improvements to the digestion steps and the digestion vessel. Summary of the Invention

[0004] Therefore, in view of the above problems, the present invention proposes a digestion vessel for the digestion of incense products, which solves the technical problem of poor digestion effect of existing incense products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a digestion vessel for incense-type products, comprising an outer vessel and an inner vessel nested within the outer vessel. The outer vessel has an outwardly extending flange at its opening, and the inner vessel has an outwardly extending inner flange at its opening. The inner flange rests on the upper surface of the outer flange. An outer sealing groove is provided on the upper surface of the outer flange, and an inner sealing groove is provided on the lower surface of the inner flange. A flange sealing ring is clamped between the outer and inner sealing grooves. A plug body is provided at the opening of the inner vessel, and a plug flange is provided on the plug body. Plug sealing gaskets are respectively provided on the upper and lower surfaces of the plug flange. The upper surface of the inner vessel abuts against the plug sealing gasket on the lower surface of the plug flange. An inverted T-shaped mounting cavity is formed in the middle of the plug body. A one-way valve structure for achieving a seal is provided within the mounting cavity. One end of the one-way valve structure extends out of the upper surface of the plug body, and the other end extends out of the lower surface of the plug body. On the outer circumference of the outer can, a lower cover is provided, and on the outer circumference of the plug body, an upper cover is provided. The upper cover and the lower cover are connected by threads to lock and fasten the plug flange, inner flange, and outer flange. An airflow channel is provided on the upper cover. One end of the one-way valve body structure extending from the upper end face of the plug body extends into the airflow channel and is airtightly fitted with the airflow channel. The one-way valve body structure includes a hollow shell threaded to the mounting cavity, a shell cover threaded to the lower end of the shell, a valve core located between the shell and the shell cover, and a compression spring abutting against the shell cover and the valve core. An air inlet is provided at the center of the shell cover. A valve seat is provided on the shell. The valve core abuts against the valve seat under the pressure of the compression spring to seal the hollow shell. Multiple through holes are provided on the side wall of the valve core. When airflow enters the shell from top to bottom and the airflow pressure is greater than the spring force of the compression spring, the valve core and the valve seat no longer seal, allowing air to enter.

[0006] Furthermore, a hollow air inlet is threadedly connected to the upper part of the airflow channel. The air inlet includes a spiral seat, a lower end head on the spiral seat that can cooperate with the airflow channel, a lower extension tube on the lower end head that extends into the one-way valve body structure, an upper end head on the spiral seat that can cooperate with the airflow channel, and an upper extension tube on the upper end head that extends into the one-way valve body structure. When the digestion tank is installed, the lower end head of the air inlet is threadedly tightened with the airflow channel. When pressure relief is required, the direction of the air inlet is reversed, and the upper end head is threadedly tightened with the airflow channel. The upper extension tube presses against the valve core, thereby releasing the seal between the valve core and the valve seat.

[0007] Furthermore, multiple channel sealing rings are provided at the lower part of the airflow channel.

[0008] Furthermore, when the outer flange, inner flange, and plug are tightly abutted together, their thickness is greater than the height of the inner wall when the upper and lower covers are locked together. The upper and lower covers lock and tighten the outer flange, inner flange, and plug by compressing the plug sealing gasket.

[0009] By adopting the aforementioned technical solution, the beneficial effects of this invention are: the digestion vessel in this solution can achieve better experimental operation functions. A one-way valve structure is screwed into the plug body, and then the top cover is closed, ensuring a tight fit between the upper end and the airflow channel. The lower cover is then closed upwards, tightening the threads with the top cover. Finally, the lower end of the air inlet is tightened with the threads of the airflow channel. This allows air to be supplied to the air inlet via an external air pressure device. During air supply, the external structure can be tightened to the upper end, or a structure that mates with the external structure can be provided on the upper extension tube.

[0010] When pressure relief is required, reverse the direction of the intake end and tighten the upper end of the pipe into the airflow channel. During tightening, the upper extension pipe comes into contact with the valve core, thereby pushing the valve core away from the valve seat, releasing the seal, and relieving pressure.

[0011] This setup simplifies the pressurization and depressurization processes, enhances the digestion effect, and improves the practicality and stability of the digestion vessel. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the digestion vessel;

[0013] Figure 2 This is a cross-sectional view of the digestion vessel;

[0014] Figure 3 This is a schematic diagram of the decomposed structure of the digestion vessel;

[0015] Figure 4 yes Figure 2 A schematic diagram of the structure when the upper end of the middle air intake is engaged with the airflow channel;

[0016] Figure 5 This is a structural diagram of a one-way valve body;

[0017] Figure 6 This is a schematic diagram of the air intake end.

[0018] Figure label:

[0019] 1. Outer tank; 11. Outer flange; 12. Outer sealing groove; 13. Flange sealing ring; 2. Inner tank; 21. Inner flange; 211. Second rough surface; 22. Inner sealing groove; 3. Plug body; 31. Plug flange; 32. Plug sealing gasket; 4. One-way valve body structure; 41. Housing; 42. Housing cover; 43. Valve core; 44. Compression spring; 421. Air inlet; 422. Guide platform; 411. Valve seat; 431. Connecting hole; 5. Lower cover; 6. Upper cover; 61. Airflow channel; 62. Channel sealing ring; 7. Air inlet end; 71. Spiral seat; 72. Lower end head; 73. Lower extension tube; 74. Upper end head; 75. Upper extension tube; 711. First rough surface. Detailed Implementation

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to Figures 1 to 6This invention provides a digestion vessel for incense-type products, comprising an outer vessel 1 and an inner vessel 2 nested within the outer vessel 1. The outer vessel 1 has an outwardly extending outer flange 11 at its opening, and the inner vessel 2 has an outwardly extending inner flange 21 at its opening. The inner flange 21 rests on the upper surface of the outer flange 11, and an outer sealing groove 12 is provided on the upper surface of the outer flange 11. An inner sealing groove 22 is provided on the lower surface of the inner flange 21. A flange sealing ring 13 is clamped between the outer sealing groove 12 and the inner sealing groove 22. A plug body 3 is provided at the opening of the inner vessel 2, and a plug flange 31 is provided on the plug body 3. Plug sealing gaskets 32 are respectively provided on the upper and lower surfaces of the plug flange 31. The upper surface of the inner vessel 2... A sealing gasket 32 ​​abuts against the lower end face of the plug flange 31. An inverted T-shaped mounting cavity is opened in the middle of the plug body 3. A one-way valve body structure 4 for achieving sealing is provided in the mounting cavity. One end of the one-way valve body structure 4 extends out of the upper end face of the plug body 3, and the other end extends out of the lower end face of the plug body 3. A lower cover 5 is provided on the outer circumference of the outer can 1, and an upper cover 6 is provided on the outer circumference of the plug body 3. The upper cover 6 and the lower cover 5 are connected by threads to lock and fasten the plug flange 31, inner flange 21, and outer flange 11. An airflow channel 61 is provided on the upper cover 6. One end of the one-way valve body structure 4 extending out of the upper end face of the plug body 3 extends into the airflow channel 61 and is airtightly fitted with the airflow channel 61. The one-way valve body structure 4 includes a hollow housing 41 threadedly connected to the mounting cavity, a cover 42 threadedly connected to the lower end of the housing 41, a valve core 43 located between the housing 41 and the cover 42, and a compression spring 44 abutting against the cover 42 and the valve core 43. An air inlet 421 is located at the center of the cover 42. A valve seat 411 is located on the housing 41. Under the pressure of the compression spring 44, the valve core 43 abuts against the valve seat 411, sealing the hollow interior of the housing 41. Multiple through holes 431 are provided on the side wall of the valve core 43. When airflow enters the housing 41 from bottom to top, and the airflow pressure is greater than the elastic force of the compression spring 44, the valve core 43 and the valve seat 411 no longer seal, allowing air to enter. The cover 42 also has a guide platform 422 for guiding the valve core 43. Multiple channel sealing rings 62 are provided at the lower part of the airflow channel 61. A hollow air inlet end 7 is threadedly connected to the upper part of the airflow channel 61. When the air inlet end 7 is threadedly engaged with the airflow channel 61, the lower end of the air inlet end 7 extends into the one-way valve body structure 4 and into one end of the plug body 3.The air intake end 7 includes a spiral seat 71, a lower end head 72 disposed on the spiral seat 71 and capable of cooperating with the airflow channel 61, a lower extension tube 73 disposed on the lower end head 72 and extending into the one-way valve body structure 4, an upper end head 74 disposed on the spiral seat 71 and capable of cooperating with the airflow channel 61, and an upper extension tube 75 disposed on the upper end head 74 and capable of extending into the one-way valve body structure 4. When the upper end head 74 is threadedly engaged with the airflow channel 61, the upper extension tube 75 presses against the valve core 43, thereby releasing the seal between the valve core 43 and the valve seat 411. When the outer flange 11, inner flange 21, and plug 3 are tightly abutted, their thickness is greater than the inner wall height when the upper cover 6 and the lower cover 5 are locked together. The upper cover 6 and the lower cover 5 lock and tighten the outer flange 11, inner flange 21, and plug 3 by compressing the plug sealing gasket 32. A first rough surface 711 is provided on the circumferential side of the spiral seat 71. The inner flange 21 has a second rough surface 211 on its circumferential side surface.

[0022] During installation, the inner tank is fitted inside the outer tank, and the flange sealing ring is clamped. Then, the one-way valve body is screwed into the plug body, and the top cover is closed, ensuring a tight fit between the upper end and the airflow channel. The lower cover is then closed upwards, tightening its threads with the top cover. Finally, the lower end of the air inlet is tightened into the airflow channel. This allows air to be supplied to the air inlet via an external air pressure device. Air supply can be achieved by tightening the external structure threads onto the upper end, or by installing a structure on the upper extension pipe that mates with the external structure.

[0023] When pressure relief is required, reverse the direction of the intake end and tighten the upper end of the pipe into the airflow channel. During tightening, the upper extension pipe comes into contact with the valve core, thereby pushing the valve core away from the valve seat, releasing the seal, and relieving pressure.

[0024] The following are some references regarding the application of the digestion vessel for incense-type products:

[0025] A method for determining the heavy metal content of incense products by ICP-MS includes the following steps:

[0026] Step 1: Take a sample of incense, grind it, shake and sieve it, take a standard weight of the sample, and place it in a digestion vessel;

[0027] Step 2: Add standard digestion solution and perform one digestion in a graphite electrothermal digester;

[0028] The third step involves secondary digestion in a microwave digester, extracting the digest solution from the secondary digestion to form a test solution, and performing a blank test.

[0029] The fourth step is to prepare a standard solution for the target and perform the determination using an inductively coupled plasma mass spectrometer (ICP-MS). The determination is performed twice.

[0030] Step 5: Calculate the test results. Set the target metal content of the sample to A mg / kg, the target metal concentration of the detection solution to B μg / L, the heavy metal concentration in the blank test to C μg / L, the volume of the detection solution to D mL, and the sample amount to E g. A = (BC) * D / (E * 1000). Set the first test result to A1, the second test result to A2, and the final test result to A0. Then:

[0031]

[0032] The above-described secondary digestion is a conventional digestion method, with the addition of a pressurization step. The above-described primary digestion is also a conventional digestion method. The specific changes are as follows: the ratio of the added digestion solution volume to the sample weight is (10–15) mL:(0.5–1) g, and the primary digestion temperature is 100–130℃. Pressurization is applied during the primary digestion at a pressure of 2–3.5 standard atmospheres. Pressurization is applied during the secondary digestion at a pressure of 5–8 standard atmospheres.

[0033] Its beneficial effects are:

[0034] This method employs a graphite electrothermal digester for primary digestion and a microwave digester for secondary digestion. The secondary digestion addresses the technical problem of unsatisfactory digestion results. In the primary digestion, the ratio of digestion solution volume to sample weight is (10–15) mL:(0.5–1) g, and the temperature is 100–130℃. The secondary digestion is a conventional technique, which is standard in the field and will not be elaborated further. Pressure treatment is also applied during both the primary and secondary digestions. The pressure is 2–3.5 atmospheres during the primary digestion and 5–8 atmospheres during the secondary digestion. This pressure treatment also aims to enhance the digestion effect. Furthermore, the applicant has made corresponding improvements to the digestion vessel to improve its practicality and stability, and to facilitate pressurization and depressurization operations.

[0035] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A digestion vessel for digesting incense-type products, characterized in that: The device includes an outer can and an inner can nested within it. The outer can has an outwardly extending flange at its opening, and the inner can has an outwardly extending flange at its opening. The inner flange rests on the upper surface of the outer flange. An outer sealing groove is provided on the upper surface of the outer flange, and an inner sealing groove is provided on the lower surface of the inner flange. A flange sealing ring is clamped between the outer and inner sealing grooves. A plug is provided at the opening of the inner can, and a plug flange is provided on the plug. Plug sealing gaskets are respectively provided on the upper and lower surfaces of the plug flange. The upper surface of the inner can abuts against the plug sealing gasket on the lower surface of the plug flange. An inverted T-shaped mounting cavity is formed in the middle of the plug, and a one-way valve structure for achieving a seal is provided within the mounting cavity. One end of the one-way valve structure extends beyond the upper surface of the plug, and the other end extends beyond the lower surface of the plug. A lower cover is provided on the outer circumference of the outer can. A top cover is provided on the outer circumference of the plug body. The top cover and the bottom cover are connected by threads to lock and fasten the plug flange, inner flange, and outer flange. An airflow channel is provided on the top cover. One end of the one-way valve body structure extending from the upper end face of the plug body extends into the airflow channel and is airtightly fitted with the airflow channel. The one-way valve body structure includes a hollow shell that is threaded to the mounting cavity, a shell cover that is threaded to the lower end of the shell, a valve core located between the shell and the shell cover, and a compression spring that abuts against the shell cover and the valve core. An air inlet is provided at the center of the shell cover. A valve seat is provided on the shell. The valve core abuts against the valve seat under the pressure of the compression spring to seal the hollow shell. Multiple through holes are provided on the side wall of the valve core. When airflow enters the shell from top to bottom and the pressure of the airflow is greater than the elastic force of the compression spring, the valve core and the valve seat no longer seal to allow air to enter. A hollow air inlet is threadedly connected to the upper part of the airflow channel. The air inlet includes a spiral seat, a lower end head on the spiral seat that can cooperate with the airflow channel, a lower extension tube on the lower end head that extends into the one-way valve body structure, an upper end head on the spiral seat that can cooperate with the airflow channel, and an upper extension tube on the upper end head that extends into the one-way valve body structure. When the digestion tank is installed, the lower end head of the air inlet is threadedly tightened with the airflow channel. When pressure relief is required, the direction of the air inlet is reversed, and the upper end head is threadedly tightened with the airflow channel. The upper extension tube presses against the valve core, thereby releasing the seal between the valve core and the valve seat.

2. The digestion vessel for digesting incense products according to claim 1, characterized in that: Multiple channel sealing rings are provided at the lower part of the airflow channel.

3. The digestion vessel for digesting incense-type products according to claim 1, characterized in that: When the outer flange, inner flange, and plug are tightly pressed together, their thickness is greater than the height of the inner wall when the upper and lower covers are locked together. The upper and lower covers lock and tighten the outer flange, inner flange, and plug by compressing the plug sealing gasket.

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