Liquid storage tank and pressure calibrator
By designing the discharge valve and ventilation cover structure in the liquid storage tank, the problems of liquid splashing and liquid overflow caused by shaking during liquid discharge in the liquid storage tank are solved, and safer and more user-friendly liquid management is achieved.
Patent Information
- Application Number
- CN202421481092.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing liquid storage tank can easily cause liquid to splash on the user's hands or working environment when discharged, and it can easily cause liquid to overflow due to shaking during transportation.
A liquid storage tank is designed, adopting a discharge valve and ventilation cover structure. The liquid discharge valve ensures that the liquid will not splash out when discharged through the combination of the rotating part, the threaded part, the sealing part and the neck-reducing part; the ventilation cover divides the box into an upper chamber and a lower chamber through the ventilation liquid barrier film to ensure that the inside of the box is air-flowing and prevents liquid from spilling out.
Effectively prevent liquid from splashing on the user's hands or working environment when discharged, while avoiding liquid overflow caused by shaking, improving user experience and equipment use safety.
Smart Images
Figure CN222652448U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure calibration equipment, in particular to a liquid storage box and a pressure calibrator. Background Art
[0002] The liquid storage tank is an important component in the hydraulic pressure calibrator. When working, the liquid in the liquid storage tank enters the system pipeline to increase the pressure for calibration. After the inspection is completed, the return check valve is opened to release the pressure, and the liquid in the system pipeline flows back to the liquid storage tank.
[0003] After the pressure calibrator has been used for a long time, the liquid in the liquid storage tank may accumulate a lot of impurities, so the liquid in the liquid storage tank needs to be replaced at regular intervals. The traditional replacement method is to directly set a drain hole at the bottom of the liquid storage tank and seal it with a screw plug. When the liquid needs to be replaced, the liquid will flow out directly after the screw is unscrewed. When the user unscrews the screw plug, the liquid (such as oil) will splash directly onto the user's hands due to failure to dodge in time, resulting in a poor user experience.
[0004] In addition, in order to ensure that the liquid in the liquid storage tank can be discharged and returned smoothly, the liquid storage tank needs to be ventilated to the atmosphere to avoid that in the case of a closed liquid storage tank, the internal air pressure increases due to the return of liquid and hinders the continuous return of liquid, and the internal air pressure decreases due to the discharge of liquid and hinders the continuous discharge of liquid. At present, traditional liquid storage tanks generally have a through hole directly opened at the top of the box body to ventilate the atmosphere. The pressure calibrator will inevitably shake during transportation, and this structure easily causes liquid to flow out of the through hole. Utility Model Content
[0005] The utility model aims to provide a liquid storage box and a pressure tester, so as to solve the problem of hand contamination when the existing liquid storage box is discharged.
[0006] In order to solve the above problems, the utility model adopts the following technical solutions:
[0007] A liquid storage box comprises a box body, a liquid outlet connection hole is provided on the side wall of the box body, a mounting portion protruding outward is provided at the bottom of the box body, a first liquid discharge hole and a mounting hole connected to each other are provided in the mounting portion, the first liquid discharge hole is connected to the inside of the box body, and a liquid discharge valve is installed at the mounting hole.
[0008] Optionally, the drain valve includes a rotating part, a threaded part, a sealing part and a necking part, the threaded part is threadedly matched with the mounting hole, the diameter of the necking part is smaller than the diameter of the mounting hole and larger than the diameter of the first drain hole, a guide cavity is formed between the outer wall of the necking part and the inner wall of the mounting hole, at least one second drain hole is provided on the necking part, a third drain hole is provided in the drain valve body, and the guide cavity is connected with the third drain hole through the second drain hole; a first annular groove is provided on the outer wall of the sealing part, and a first sealing ring is embedded in the first annular groove.
[0009] Optionally, the rotating part, the threaded part, the sealing part and the necking part of the liquid discharge valve are arranged in sequence from bottom to top, and the diameters of the rotating part, the threaded part, the sealing part and the necking part decrease in sequence.
[0010] Optionally, a liquid outlet connector is threadedly connected to the liquid outlet connection hole.
[0011] Optionally, a second annular groove is formed on an end surface of the neck portion that is away from the rotating portion, and a second sealing ring is embedded in the second annular groove.
[0012] Optionally, an opening is provided on the top of the box body, and a vent cover is threadedly installed at the opening.
[0013] Optionally, a ventilation and liquid-isolating membrane is installed inside the ventilation cover, which divides the interior of the ventilation cover into an upper chamber and a lower chamber, the lower chamber is connected to the interior of the box, and at least one ventilation hole is opened on the ventilation cover, and the upper chamber is connected to the atmosphere through the ventilation hole.
[0014] Optionally, a third annular groove is provided at the contact surface between the vent cover and the opening end surface, and a third sealing ring is embedded in the third annular groove.
[0015] The present application also provides a pressure calibrator, including a booster and a liquid storage tank as described above, wherein the input end of the booster is connected to the liquid outlet connection hole and receives liquid from the liquid storage tank for pressurization, and the output end of the booster is connected to the pressure gauge to be tested and the standard pressure module to output the target pressure for calibration.
[0016] By adopting the above technical solution, the utility model has the following advantages:
[0017] The utility model can effectively prevent liquid from splashing onto the user's hands or rotating tools when discharging liquid through the provision of the liquid discharge valve, and can also guide the liquid to the same place through the third liquid discharge hole of the liquid discharge valve to avoid polluting the working environment, thereby improving the user's product experience during the pressure calibration process.
[0018] In addition, by setting the vent cover, it can ensure that the inside of the box is ventilated to the atmosphere while effectively preventing liquid from overflowing due to shaking. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of one embodiment of the utility model;
[0020] Figure 2 yes Figure 1 A schematic cross-sectional structure diagram of;
[0021] Figure 3 yes Figure 2 Component exploded view;
[0022] Figure 4 yes Figure 2 A local enlarged schematic diagram of the middle A;
[0023] Figure 5 yes Figure 2 Schematic diagram of the structure of the middle vent cover.
[0024] Reference numerals: 1, box body, 11, liquid outlet connection hole, 12, mounting portion, 13, first liquid discharge hole, 14, mounting hole, 15, opening; 2, liquid outlet connector,
[0025] 3. liquid discharge valve, 31. rotating part, 32. threaded part, 33. sealing part, 34. neck part, 35. flow guiding cavity, 36. second liquid discharge hole, 37. third liquid discharge hole, 38. first sealing ring, 39. second sealing ring;
[0026] 4. Ventilation cover, 41. Ventilation liquid barrier membrane, 42. Upper cavity, 43. Lower cavity, 44. Ventilation hole, 45. Third sealing ring. DETAILED DESCRIPTION
[0027] In order to make the technical purpose, technical scheme and beneficial effects of the utility model clearer, the following Figure 1-5 The technical solution of the utility model is further illustrated with specific embodiments.
[0028] Example 1
[0029] A liquid storage box includes a box body 1, which is used to store liquid for pressure calibration, such as oil, water, etc. A liquid outlet connection hole 11 is opened near the bottom of the side wall of the box body 1, and an outwardly protruding mounting portion 12 is provided at the bottom of the box body 1. A first liquid discharge hole 13 and a mounting hole 14 that are connected to each other are opened in the mounting portion 12. The first liquid discharge hole 13 is connected to the inside of the box body 1, and the mounting hole 14 is coaxially arranged with the first liquid discharge hole 13. A liquid discharge valve 3 is installed at the mounting hole 14.
[0030] Example 2
[0031] like Figures 2 to 4As shown, on the basis of Example 1, the liquid discharge valve 3 includes a rotating portion 31, a threaded portion 32, a sealing portion 33 and a neck portion 34. The end of the liquid discharge valve 3 away from the first liquid discharge hole 13 is the rotating portion 31, which is used to facilitate the user to rotate the liquid discharge valve 3. Under the cooperation of the threaded portion 32 and the mounting hole 14, the liquid discharge valve 3 moves axially relative to the mounting hole 14. The threaded portion 32 is threadedly matched with the mounting hole 14. The end of the liquid discharge valve 3 close to the first liquid discharge hole 13 is the neck portion 34, and the diameter of the neck portion 34 is smaller than that of the first liquid discharge hole 13. The diameter of the mounting hole 14 is greater than that of the first liquid discharge hole 13. A guide cavity 35 is formed between the outer wall of the neck portion 34 and the inner wall of the mounting hole 14. At least one second liquid discharge hole 36 is provided on the neck portion 34. A third liquid discharge hole 37 is provided in the body of the liquid discharge valve 3. The guide cavity 35 is connected with the third liquid discharge hole 37 through the second liquid discharge hole 36. Preferably, the third liquid discharge hole 37 is arranged along the central axis of the liquid discharge valve 3. The second liquid discharge hole 36 extends obliquely downward from the cavity to connect with the third liquid discharge hole 37.
[0032] A first annular groove is formed on the outer wall of the sealing portion 33 , and a first sealing ring 38 is embedded in the first annular groove.
[0033] Furthermore, in another embodiment, the rotating part 31, the threaded part 32, the sealing part 33 and the neck part 34 of the liquid discharge valve 3 are arranged sequentially from bottom to top, and the diameters of the rotating part 31, the threaded part 32, the sealing part 33 and the neck part 34 decrease sequentially, and the diameter of the sealing part 33 is slightly smaller than the diameter of the mounting hole 14.
[0034] Working principle:
[0035] When it is necessary to discharge the liquid (which usually contains impurities after long-term use) accumulated in the box body 1, the user rotates the rotating part 31 to make the end of the drain valve 3 close to the first drain hole 13 gradually leave the end face of the mounting hole 14, and the liquid released from the first drain hole 13 flows into the guide cavity 35, and then flows into the third drain hole 37 through the second drain hole 36. During this process, the first sealing ring 38 seals the installation gap between the drain valve 3 and the mounting hole 14, effectively preventing the liquid from overflowing from the gap between the drain valve 3 and the mounting hole 14, and preventing the liquid from flowing to the user's hand or rotating tool that contacts the rotating part 31.
[0036] It can be understood that when discharging the liquid, the contact area between the user's hand or rotating tool and the discharge valve 3 is only on the outer wall of the rotating part 31, and the direction of liquid outflow is on the central axis of the rotating part 31, so it will not splash onto the user's hand or rotating tool.
[0037] Example 3
[0038] On the basis of Example 1, a liquid outlet connector 2 is threadedly connected to the liquid outlet connection hole 11, which can be quickly connected to an external pipeline. When liquid discharge is required, the liquid in the box body 1 flows to the boosting mechanism through the liquid outlet connector 2 to be pressurized to a preset target pressure; when liquid return is required, the liquid in the boosting mechanism flows back to the box body 1 through the liquid outlet connector 2.
[0039] Example 4
[0040] On the basis of Example 2, a second annular groove is formed on the end face of the neck portion 34 which is away from the rotating portion 31, and a second sealing ring 39 is embedded in the second annular groove. When the liquid storage tank does not need to be drained, the end face of the neck portion 34 abuts against the end face of the mounting hole 14, and the second sealing ring 39 is compressed to seal the first drain hole 13 and prevent liquid from overflowing from the first drain hole 13. When liquid needs to be drained, the user rotates the rotating portion 31 to separate the end face of the neck portion 34 from the end face of the mounting hole 14, and the liquid is released from the first drain hole 13.
[0041] Example 5
[0042] On the basis of Example 1, an opening 15 is provided on the top of the box body 1, and a vent cover 4 is threadedly installed at the opening 15.
[0043] Example 6
[0044] like Figure 5 As shown, on the basis of Example 4, a venting liquid barrier membrane 41 is installed inside the vent cover 4, and the venting liquid barrier membrane 41 divides the interior of the vent cover 4 into an upper chamber 42 and a lower chamber 43, and the lower chamber 43 is connected to the interior of the box body 1. At least one vent hole 44 is opened on the vent cover 4, and the upper chamber 42 is connected to the atmosphere through the vent hole 44.
[0045] The ventilating liquid-isolating membrane 41 can prevent liquid from entering the upper chamber 42 from the lower chamber 43, and can achieve air communication between the upper chamber 42 and the lower chamber 43, thereby ensuring that the interior of the box body 1 is ventilated to the atmosphere and effectively preventing liquid from overflowing.
[0046] Example 7
[0047] A third annular groove is provided at the contact surface between the vent cover 4 and the end surface of the opening 15 , and a third sealing ring 45 is embedded in the third annular groove to achieve sealing at the end surface of the opening 15 .
[0048] An embodiment of a pressure calibrator is as follows
[0049] A pressure calibrator includes a booster and a liquid storage tank as described in any one of Examples 1-7, wherein the input end of the booster is connected to the liquid outlet connection hole and receives liquid from the liquid storage tank for pressurization, and the output end of the booster is connected to a pressure gauge to be tested and a standard pressure module to output a target pressure for calibration.
[0050] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be 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 by specific circumstances.
[0052] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.
[0053] It should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A liquid storage tank, comprising a tank body, characterized in that: A liquid outlet connection hole is provided on the side wall of the box body, and an outwardly protruding mounting portion is provided at the bottom of the box body. A first liquid discharge hole and a mounting hole that are interconnected are provided in the mounting portion. The first liquid discharge hole is connected to the inside of the box body, and a liquid discharge valve is installed at the mounting hole.
2. A liquid storage tank according to claim 1, characterized in that: The liquid discharge valve includes a rotating part, a threaded part, a sealing part and a necking part. The threaded part is threadedly matched with the mounting hole. The diameter of the necking part is smaller than the diameter of the mounting hole and larger than the diameter of the first liquid discharge hole. A guide cavity is formed between the outer wall of the necking part and the inner wall of the mounting hole. At least one second liquid discharge hole is provided on the necking part. A third liquid discharge hole is provided in the liquid discharge valve body. The guide cavity is connected with the third liquid discharge hole through the second liquid discharge hole. A first annular groove is provided on the outer wall of the sealing part, and a first sealing ring is embedded in the first annular groove.
3. A liquid storage tank according to claim 2, characterized in that: The rotating part, the threaded part, the sealing part and the necking part of the liquid discharge valve are arranged in sequence from bottom to top, and the diameters of the rotating part, the threaded part, the sealing part and the necking part are reduced in sequence.
4. A liquid storage tank according to claim 1, characterized in that: The liquid outlet connection hole is threadedly connected with a liquid outlet connector.
5. A liquid storage tank according to claim 2, characterized in that: A second annular groove is provided on the end surface of the neck portion which is away from the rotating portion, and a second sealing ring is embedded in the second annular groove.
6. A liquid storage tank according to claim 1, characterized in that: An opening is arranged on the top of the box body, and a vent cover is threadedly installed on the opening.
7. A liquid storage tank according to claim 6, characterized in that: A ventilating liquid barrier membrane is installed inside the ventilating cover, which divides the inside of the ventilating cover into an upper chamber and a lower chamber. The lower chamber is connected to the inside of the box body. At least one vent hole is opened on the ventilating cover, and the upper chamber is connected to the atmosphere through the vent hole.
8. A liquid storage tank according to claim 6, characterized in that: A third annular groove is arranged at the contact surface between the vent cover and the opening end surface, and a third sealing ring is embedded in the third annular groove.
9. A pressure calibrator, characterized in that: It comprises a booster and a liquid storage tank as described in any one of claims 1 to 8, wherein the input end of the booster is connected to the liquid outlet connection hole and receives liquid from the liquid storage tank for pressurization, and the output end of the booster is connected to a pressure gauge to be tested and a standard pressure module to output a calibrated target pressure.