Bottle cap for culturing BOD (Biochemical Oxygen Demand) sample
By designing the BOD sample culture bottle cap with conical bottle mouth and bottle stopper and water-sealed cavity structure, the problem of insufficient sealing of BOD culture bottles is solved, effectively isolating the external air, and ensuring the accuracy and reliability of experimental results. sex.
Patent Information
- Application Number
- CN202420746853.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-11
AI Technical Summary
The poor sealing properties of the BOD culture bottles cause oxygen to enter the bottle, affecting the accuracy of the measurement results.
A BOD sample culture bottle cap including a conical bottle mouth and a bottle stopper is designed, and a polytetrafluoroethylene material is used to form a water sealing cavity through adding water tanks and through holes, and combined with the glass bottle body to ensure sealing and stability.
Effectively isolate the outside air, ensure the stable environment of the experimental sample, prevent oxygen from entering, thereby improving the accuracy and reliability of the measurement results.
Smart Images
Figure CN222212747U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of biochemical experimental equipment, in particular to a BOD sample culture bottle cap. Background Art
[0002] The BOD culture bottle is a laboratory vessel specially used to measure the biological oxygen demand (BOD) in water. In the BOD determination, the BOD value is calculated by measuring the reduction of dissolved oxygen in the water sample within a certain period of time. The BOD value (Biological Oxygen Demand) refers to the amount of dissolved oxygen consumed in the biochemical reaction of microorganisms decomposing biodegradable organic matter in water under certain conditions. It is expressed in mg / L or percentage, ppm. It is a comprehensive indicator reflecting the content of organic pollutants in water. If the biological oxidation time is five days, it is called the five-day biochemical oxygen demand (BOD5), and there is also BOD accordingly. 10 、BOD 20 The determination of BOD helps to understand the content of organic matter and self-purification capacity in water, so as to judge the degree of organic pollution in water. Generally, the higher the BOD value, the more organic pollutants there are in the water, the worse the self-purification capacity, and the worse the water quality. Therefore, the BOD value is one of the important indicators to measure the degree of water pollution.
[0003] BOD culture bottles are an indispensable and important tool in BOD determination experiments. Their design and specifications play a vital role in ensuring the accuracy and reliability of the determination results. However, if the culture bottle is not sealed well, oxygen will enter the bottle, resulting in inaccurate determination results and thus obtaining erroneous experimental data. Utility Model Content
[0004] Aiming at the technical problem that the sealing performance of the existing BOD culture bottles is poor, the utility model provides a BOD sample culture bottle cap.
[0005] The technical solution adopted by the utility model is: a BOD sample culture bottle cap, comprising a cover body, a bottle plug is fixedly connected to the cover body, a water adding groove is arranged above the bottle plug, a connecting hole is opened on the water adding groove, a bottle body is movably arranged below the cover body, a bottle cavity is opened inside the bottle body, a bottle mouth is fixedly connected to the bottle body, and the bottle mouth is used in conjunction with the bottle plug.
[0006] Furthermore, the bottle mouth and the bottle stopper are both conical and fit tightly and closely.
[0007] By adopting the above technical solution, the culture bottle is effectively isolated from the outside air.
[0008] Furthermore, the cover is made of polytetrafluoroethylene, and the bottle body is made of glass.
[0009] By adopting the above technical solution, the culture bottle and the bottle cap are resistant to aging and corrosion.
[0010] Furthermore, a water-tight cavity is formed between the bottle mouth and the outer wall of the bottle body, and the upper outer edge of the bottle body is higher than the bottle mouth.
[0011] By adopting the above technical solution, it is convenient to form a water seal.
[0012] Furthermore, a blocking cover is fixedly connected to the outer surface of the cover body.
[0013] By adopting the above technical solution, the evaporation of the water seal is slowed down.
[0014] The beneficial effect of the utility model is as follows: compared with the prior art, in the utility model, the bottle stopper and the conical setting of the bottle mouth make the fit tight and strict, effectively isolate the culture bottle from the outside air, and then the water-sealed cavity between the bottle mouth and the outer edge of the upper end of the bottle body is divided into two parts by the cover body to form a connector structure, and then water is injected from the water injection groove into the water-sealed cavity to form a water seal body between the cover body and the bottle body, effectively isolating the outside air from contacting the experimental sample, ensuring the stability of the environmental conditions in the culture bottle, and preventing oxygen from entering the bottle, thereby ensuring the accuracy and reliability of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the cover body in the utility model;
[0017] Figure 3 It is a structural schematic diagram of the bottle body in the utility model;
[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the bottle body in the utility model;
[0019] Figure 5 It is a schematic diagram of the assembly structure of the cover body and the bottle body in the utility model;
[0020] Figure 6 It is a schematic cross-sectional structure diagram of an assembly of a cover body and a bottle body in the utility model.
[0021] The markings in the figure are: 1. cover body; 2. bottle stopper; 3. water adding groove; 4. connecting hole; 5. blocking cover; 6. bottle body; 7. bottle mouth; 8. water sealing cavity; 9. bottle cavity. DETAILED DESCRIPTION
[0022] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] The following is combined with Figure 1-6 The utility model is further described.
[0025] In order to solve the problems existing in the background technology, the present application proposes the following technical solutions: a BOD sample culture bottle cap, comprising a cover body 1, the cover body 1 is used in conjunction with a bottle body 6 as a complete BOD sample culture bottle, a bottle plug 2 is fixedly connected to the cover body 1, the bottle plug 2 contacts with a bottle mouth 7 in the bottle body 6, and seals the inside of a bottle cavity 9 to prevent the inside of the bottle cavity 9 from contacting the outside air, a water adding groove 3 is arranged above the bottle plug 2, and a connecting hole 4 is opened on the water adding groove 3, water is injected through the water adding groove 3, and the water flows into the water sealing cavity 8 through the connecting hole 4 to form a water seal effect, effectively isolating the outside air, a bottle body 6 is movably arranged below the cover body 1, and a bottle cavity 9 is opened inside the bottle body 6, and the bottle cavity 9 is used to accommodate experimental samples, a bottle mouth 7 is fixedly connected to the bottle body 6, and the bottle mouth 7 is used in conjunction with the bottle plug 2, and the bottle mouth 7 is used in conjunction with the bottle plug 2 to seal the inside of the bottle body 6.
[0026] It is further explained that the bottle mouth 7 and the bottle stopper 2 are both conical and fit tightly (as shown in the attached Figure 2 And attached Figure 4 As shown), the bottle mouth 7 and the bottle stopper 2 can be used together to effectively isolate the culture bottle from the outside air, preventing the outside air from entering the culture bottle and affecting the experimental results. The contact surface between the bottle mouth 7 and the bottle stopper 2 can be frosted to reduce the gap between the contact surfaces of the bottle mouth 7 and the bottle stopper 2, thereby further improving the sealing effect.
[0027] It is further explained that the cover 1 is made of polytetrafluoroethylene, which is a high molecular polymer obtained by polymerizing tetrafluoroethylene as a monomer. It has the characteristics of acid and alkali resistance, resistance to various organic solvents, and is almost insoluble in all solvents, so that the cover 1 has good corrosion resistance. The bottle body 6 is made of transparent glass, which can facilitate observation of the situation inside the bottle body 6.
[0028] It is further explained that a water-tight cavity 8 is formed between the bottle mouth 7 and the outer wall of the bottle body 6, and the upper outer edge of the bottle body 6 is higher than the bottle mouth 7. After the bottle stopper 2 is inserted into the bottle mouth 7, the cover body 1 divides the water-tight cavity 8 into two parts. There is a gap between the cover body 1 and the upper outer edge of the bottle body 6, so that the water-tight cavity 8 forms a connector. After water is injected from the water adding tank 3, the water enters the water-tight cavity 8 from the connecting hole 4. When it is effective, the water level submerges the bottle mouth 7 to form a water seal (as shown in the attached figure). Figure 6 As shown), the bottle cavity 9 is isolated from the outside air by water to ensure that the bottle cavity 9 is in contact with the outside air.
[0029] It is further explained that a baffle 5 is fixedly connected to the outer surface of the cover body 1, and the baffle 5 can slow down the evaporation of the water seal, reduce the frequency of adding water seal by the operator, and reduce the intensity of the operator's movements.
[0030] The specific operation is as follows: after adding the experimental sample into the bottle cavity 9 through the bottle mouth 7, cover the cover 1 on the bottle body 6 so that the bottle stopper 2 is in close contact with the bottle mouth 7, and then inject water through the water adding groove 3. The water enters the water sealing cavity 8 through the connecting hole 4 to form a water seal, which effectively prevents the outside air from contacting the experimental sample in the bottle cavity 9.
[0031] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.
[0032] Although the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A BOD sample culture bottle cap, characterized in that: The invention comprises a cover body (1), a bottle plug (2) is fixedly connected to the cover body (1), a water adding groove (3) is arranged above the bottle plug (2), a connecting hole (4) is provided on the water adding groove (3), a bottle body (6) is movably arranged below the cover body (1), a bottle cavity (9) is provided inside the bottle body (6), a bottle mouth (7) is fixedly connected to the bottle body (6), and the bottle mouth (7) is used in conjunction with the bottle plug (2).
2. A BOD sample culture bottle cap according to claim 1, characterized in that: The bottle mouth (7) and the bottle stopper (2) are both conical and fit tightly together.
3. A BOD sample culture bottle cap according to claim 2, characterized in that: The cover (1) is made of polytetrafluoroethylene, and the bottle body (6) is made of glass.
4. A BOD sample culture bottle cap according to claim 3, characterized in that: A water-tight cavity (8) is formed between the bottle mouth (7) and the outer wall of the bottle body (6), and the upper outer edge of the bottle body (6) is higher than the bottle mouth (7).
5. A BOD sample culture bottle cap according to claim 4, characterized in that: A blocking cover (5) is fixedly connected to the outer surface of the cover body (1).