Sample digestion sealing pressure relief switching structure
By designing an anti -solution tube cover with a pressure port and block, the use of lifts to achieve the pressure and loosening of blocks, solve the problem of sealing and pressure switching in existing technologies, and realize the tube cover. Flexible adjustment and satisfaction of experimental needs.
Patent Information
- Application Number
- CN202420089899.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-01-15
AI Technical Summary
The existing digestion tube technology lacks a general tube cover, which cannot effectively switch between sealing and pressure relief.
The design of the sample relief and sealing pressure switching structure is designed, including the tube and tube cover. The tube cover is equipped with pressure ports and blocks. Switch.
By adjusting the position of the lifting part, it can be loosened or pressed to the block of blocks on the pressure when needed to achieve the sealing or discreation of the tube's inside of the tube to meet different experimental needs.
Smart Images
Figure CN222415959U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of digestion tubes, in particular to a sample digestion sealing and pressure relief switching structure. Background Art
[0002] Before the laboratory conducts heavy metal testing on soil samples, the soil samples need to be digested, and the digestion of soil samples is usually carried out in a digestion tube. The digestion tube is generally composed of a tube cover and a hollow cylindrical tube body. The types of tube covers used will be different at different acid-driving stages of digestion or for different purposes. Sometimes a screw cap is used, which has a good sealing effect and can maintain a relatively high pressure in the tube body; sometimes a reflux cap is used, which has a certain pressure relief capacity and can avoid excessive pressure in the tube body. However, there is a lack of a universal tube cover. Summary of the invention
[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a sample digestion sealing and pressure relief switching structure, which can seal or relieve pressure inside the digestion tube as needed.
[0004] Technical solution: To achieve the above-mentioned purpose, the sample digestion sealing pressure relief switching structure of the utility model includes a tube body and a tube cover, the tube cover is provided with a pressure relief port, and there is a blocking block on the pressure relief port; a lifting member is movably provided on the tube cover; the downward movement of the lifting member presses the blocking block against the pressure relief port to block the pressure relief port; the upward movement of the lifting member loosens the blocking block.
[0005] Furthermore, an exhaust hole is provided on the blocking block, and the position of the lifting member is opposite to the exhaust hole, and the downward movement of the lifting member corresponds to blocking the exhaust hole.
[0006] Furthermore, the lower part of the blocking block is a raised part, and a current collecting protrusion is provided on the raised part, and the exhaust hole and the current collecting protrusion are staggered with each other.
[0007] Furthermore, the raised portion of the block is conical, the current collecting point is the cone apex of the raised portion, and the exhaust hole and the cone apex of the raised portion are staggered with each other.
[0008] Furthermore, the blocking block is limited in the pressure relief port so that the exhaust hole and the lifting member are kept in relative positions.
[0009] Furthermore, the upper portion of the blocking block is a square portion, the pressure relief port has a square opening section, and the square portion is confined within the square opening section.
[0010] Furthermore, a support is provided on the pipe cover, and a screw hole is opened on the support; the lifting member is a bolt in the screw hole, and the bolt is lifted and lowered when it is screwed to tighten or loosen the block.
[0011] Furthermore, the tube cover has an internal thread structure, the tube body and the tube mouth have an external thread structure, and the tube cover can be screwed and fixed on the tube body and the tube mouth.
[0012] Beneficial effects: The sample digestion sealing and pressure relief switching structure of the utility model can loosen or tighten the block on the pressure relief port by adjusting the position of the bolt on the tube cover; when the block is loosened, the air can be exhausted and the pressure can be relieved through the exhaust hole, or the block can be pushed open to relieve the pressure; when the block is tightened, the exhaust hole is also blocked, and the tube cover seals the inside of the tube body. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION
[0014] The utility model is further described below in conjunction with the accompanying drawings.
[0015] As attached Figure 1 The sample digestion sealing and pressure relief switching structure comprises a digestion tube body 1 and a tube cover 2, wherein the tube cover 2 is provided with a pressure relief port 3, and a blocking block 4 is provided on the pressure relief port 3, and the shape of the blocking block 4 is consistent with the shape of the pressure relief port 3. A lifting member is movably provided on the tube cover 2, and the lifting member can be movably lifted and lowered; the downward movement of the lifting member presses the blocking block 4 against the pressure relief port 3 to block the pressure relief port 3, so that the tube cover 2 can seal the inside of the tube body 1. The upward movement of the lifting member loosens the blocking block 4, and when the pressure inside the tube body 1 is too high, the blocking block 4 can be pushed open to relieve the pressure.
[0016] The utility model changes the position of the lifting member to tighten or loosen the block 4, so that the pipe cover 2 can be switched between two modes. When the block 4 is loosened, the block 4 can be pushed open to release pressure; when the block 4 is tightened, the pipe cover 2 seals the inside of the pipe body 1. Therefore, the pipe cover 2 of the utility model can be adjusted according to the needs of the experiment.
[0017] The blocking block 4 is provided with an exhaust hole 5, and the position of the lifting member is opposite to the exhaust hole 5. The downward movement of the lifting member blocks the exhaust hole 5. When the lifting member moves upward, the inside of the tube body 1 can be exhausted and depressurized through the exhaust hole 5. When the pressure inside the tube body 1 is too high, the blocking block 4 is pushed open to further release the pressure. When the lifting member moves downward, the exhaust hole 5 is blocked by the lifting member, so that the tube cover 2 can seal the inside of the tube body 1.
[0018] The lower part of the block 4 is a raised part, on which there is a current collecting convex point, and the exhaust hole 5 and the current collecting convex point are staggered, so that the block 4 has a certain reflux effect, and the acid mist generated during the digestion process gradually gathers to the current collecting convex point along the raised part, and then drips back into the tube body 1 to achieve reflux.
[0019] The convex part of the blocking block 4 is conical, the current collecting convex point is the conical vertex of the convex part, and the vent 5 and the conical vertex of the convex part are staggered, so that the droplets generated during the reflux process will not block the vent 5, and the vent 5 is kept unobstructed.
[0020] The blocking block 4 is confined in the pressure relief port 3, that is, the blocking block 4 will not rotate in the pressure relief port 3, so that the exhaust hole 5 and the lifting member remain in relative position to ensure that the exhaust hole 5 can be blocked after the lifting member moves down. In one embodiment, the upper portion of the blocking block 4 is a square portion, and the pressure relief port 3 has a square mouth section, and the square portion is confined in the square mouth section, so that the blocking block 4 will not rotate in the pressure relief port 3.
[0021] As attached Figure 1 As shown in the figure, the pipe cover 2 is provided with a support 6, and a vertical screw hole is opened on the support 6. The lifting member is a vertical bolt 7 in the screw hole, and the bolt 7 is vertically opposite to the exhaust hole 5, and the radius of the bolt 7 is larger than the radius of the exhaust hole 5. The bolt 7 is lifted and lowered when being screwed to tighten or loosen the block 4 to change the working mode of the pipe cover 2. The pipe cover 2, the block 4 and the bolt 7 are all made of polytetrafluoroethylene to have good corrosion resistance.
[0022] The tube cover 2 has an internal thread structure, and the tube mouth of the tube body 1 has an external thread structure. The tube cover 2 can be screwed and fixed on the tube mouth of the tube body 1, so that the tube cover 2 and the tube body 1 are tightly connected.
[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. Sample digestion sealing and pressure relief switching structure, characterized by: The invention comprises a tube body (1) and a tube cover (2); a pressure relief port (3) is provided on the tube cover (2); a blocking block (4) is provided on the pressure relief port (3); and a lifting member is movably provided on the tube cover (2); The downward movement of the lifting member presses the blocking block (4) against the pressure relief port (3) to block the pressure relief port (3); the upward movement of the lifting member releases the blocking block (4).
2. The sample digestion sealing and pressure relief switching structure according to claim 1, characterized in that: The blocking block (4) is provided with an exhaust hole (5), the position of the lifting member is opposite to the exhaust hole (5), and the downward movement of the lifting member blocks the exhaust hole (5) accordingly.
3. The sample digestion sealing and pressure relief switching structure according to claim 2, characterized in that: The lower part of the blocking block (4) is a raised part, on which there is a current collecting protrusion, and the exhaust hole (5) and the current collecting protrusion are staggered.
4. The sample digestion sealing and pressure relief switching structure according to claim 3, characterized in that: The raised portion of the blocking block (4) is conical, the current collecting point is the cone vertex of the raised portion, and the exhaust hole (5) and the cone vertex of the raised portion are staggered.
5. The sample digestion sealing and pressure relief switching structure according to claim 3, characterized in that: The blocking block (4) is limited in the pressure relief port (3), so that the exhaust hole (5) and the lifting member are kept in relative positions.
6. The sample digestion sealing and pressure relief switching structure according to claim 5, characterized in that: The upper part of the blocking block (4) is a square portion, the pressure relief port (3) is provided with a square opening section, and the square portion is confined within the square opening section.
7. The sample digestion sealing and pressure relief switching structure according to claim 1, characterized in that: The pipe cover (2) is provided with a support (6), and a screw hole is opened on the support (6); the lifting member is a bolt (7) in the screw hole, and the bolt (7) is lifted and lowered when it is screwed to tighten or loosen the block (4).
8. The sample digestion sealing and pressure relief switching structure according to any one of claims 1 to 7, characterized in that: The tube cover (2) has an internal thread structure, and the tube mouth of the tube body (1) has an external thread structure. The tube cover (2) can be screwed and fixed on the tube mouth of the tube body (1).