CN217533659U

CN217533659U - Container for manufacturing equivalent standard weights

Info

Publication number: CN217533659U
Application number: CN202221588240.4U
Authority: CN
Inventors: 窦广义; 张学成; 王建国; 王继船
Original assignee: Jinan Xinguang Testing Machine Co ltd
Current assignee: Jinan Xinguang Testing Machine Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-10-04
Anticipated expiration: 2032-06-23

Abstract

The application discloses container of preparation equivalent standard weight belongs to weighing apparatus examination technical field. The container includes: the body is in an inverted frustum shape, the body is arranged in a hollow mode, and an opening is formed in the top of the body; the cover body covers the top opening of the body, and the body and the cover body form a loading cavity for loading liquid or granular substances. The body of the inverted circular truncated cone shape is adopted, and in the transportation process, a plurality of bodies are stacked in the transportation mechanism, so that the occupied space of the container is saved, the transportation is convenient, the heavy-load storage and transportation process of the traditional standard weight is omitted, the manufacturing cost of the standard weight is saved, and the problem that the large-range weighing machine cannot carry out full-range verification is solved.

Description

Container for manufacturing equivalent standard weights

Technical Field

The application relates to a container for manufacturing equivalent standard weights, and belongs to the technical field of weighing apparatus verification.

Background

In the calibration or calibration work of the weighing apparatus, standard weights are the basic tools. It needs to be manufactured, transported to the certification job site, and placed on the certified scale. After the certification work is completed, it needs to be transported back to a storage site, stored and maintained to maintain its function as a mass and quantity transfer tool and its accuracy in quantity.

For a large weighing apparatus with a large measuring range, the number of the required standard weights is naturally large and heavy. For example, a 100t scale weighing machine, the total weight required by full-scale verification is not less than 100t. The transportation and storage of the weights become a very big problem, which not only needs to consume a large amount of transportation cost, but also wastes a large amount of time, thereby almost becoming a difficult problem which is difficult to overcome. For the verification of the weighing apparatus and the national quantity value transmission, the guarantee of the fair trade is very unfavorable.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the application provides a container for manufacturing equivalent standard weights, the body in the shape of the inverted circular truncated cone is adopted, then in the transportation process, the body layers are placed in a transportation mechanism, the occupied space of the container is saved, the transportation is convenient, the heavy-load storage and transportation process of the traditional standard weights is omitted, the manufacturing cost of the standard weights is saved, and the problem that a large range weighing machine cannot be used for full-range verification is solved.

According to one aspect of the present application, there is provided a container for making equivalent standard weights, comprising:

the body is in an inverted frustum shape, the interior of the body is hollow, and the top of the body is provided with an opening;

the cover body covers the top opening of the body, and the body and the cover body form a loading cavity for loading liquid or granular substances.

Optionally, the outer circumference of the body forms an angle of 5-15 ° with the body axis.

Optionally, the loading chamber is provided with a liquid injection and discharge port and an exhaust port.

Optionally, the liquid injection and discharge port is arranged at the bottom of the body, the liquid injection and discharge port is plugged by a plugging piece, and the exhaust port is arranged at the top of the cover body.

Optionally, the plugging piece comprises a valve core, a connecting rod and a connecting seat which are sequentially connected, the valve core is in an inverted truncated cone shape, and a spring is sleeved on the periphery of the connecting rod;

the liquid injection and discharge port comprises a first channel and a second channel, the first channel is in an inverted circular truncated cone shape and is abutted to the valve core, one end of the connecting rod is arranged in the first channel, the other end of the connecting rod and the connecting seat are arranged in the second channel, one end of the spring is connected with the connecting seat, and the other end of the spring is fixed on the second channel.

Optionally, a locking groove is formed in the second channel, the locking groove is formed in one side, away from the valve core, of the connecting seat, and an elastic piece is arranged in the locking groove and can extend out or retract along the radial direction of the second channel.

Optionally, the liquid injection and discharge port further includes a third channel, the third channel is disposed between the first channel and the second channel, a radial cross-sectional area of the third channel is equal to a radial cross-sectional area of the bottom of the first channel and is smaller than a radial cross-sectional area of the second channel, the connecting rod sequentially passes through the first channel, the third channel and the second channel, a radial cross-sectional area of the spring is larger than a radial cross-sectional area of the third channel, and the spring is fixed to the top of the second channel.

Optionally, the bottom periphery of body is provided with the breach, breach department be provided with the regulation mouth that loads the chamber intercommunication, the regulation mouth carries out the shutoff through the shutoff piece.

Optionally, a liquid level detector is further arranged on the cover body.

The top of the cover body is provided with a positioning groove which is matched with the bottom of the body.

Optionally, the outer side of the top of the body is provided with protruding portions at intervals in the circumferential direction, the inner side of the cover body is provided with notches at intervals in the circumferential direction, and the protruding portions are clamped with the notches, so that the cover body is sealed with the body.

Optionally, a rib plate is connected to the bottom of the cover body, and the rib plate abuts against the inner side of the body.

Benefits that can be produced by the present application include, but are not limited to:

1. the utility model provides a preparation equivalent standard weight's container, this container can utilize the on-spot quick preparation equivalent standard weight of liquid to solve the large-scale weighing apparatus examination required quantity many, the weight is heavy, the high standard weight problem of the degree of accuracy, thereby provide simple and convenient effectual instrument for weighing apparatus examination and quantity value transmission.

2. The application provides a preparation equivalent standard weight's container, it must have the water source to belong to the weighing apparatus department of laying, can draw materials on the spot in the weighing apparatus verification process, and the equivalent standard weight of anytime and anywhere preparation, the equivalent standard weight need only use in the weighing apparatus verification for a short time, need not to consider the stability problem of measurement value.

3. The utility model provides a preparation equivalent standard weight's container, the container is light, easily warehousing and transportation to repeatedly usable, the life-span is not less than high-grade standard weight, and the liquid of loading in the container easily obtains, uses its preparation equivalent standard weight only need consume annotate liquid and accurate measurement time, but quick preparation.

4. The application provides a preparation equivalent standard weight's container adopts high accuracy standard weight to calibrate high accuracy quality comparator, and high accuracy quality comparator later weighs the container after loading, accomplishes the quantity value transfer between standard weight and the equivalent standard weight.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural view of a container according to one embodiment of the present disclosure in an unsealed state;

FIG. 2 is a schematic top view of a body of a container of one construction to which embodiments of the present application relate;

FIG. 3 is a schematic view of a container according to an exemplary embodiment of the present disclosure in a sealed state;

FIG. 4 is a partial enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of a plurality of containers of one configuration according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural view of a closed container of another structure according to an embodiment of the present invention;

FIG. 7 is a schematic view of a stack of several containers of another configuration according to embodiments of the present application;

FIG. 8 is a schematic structural diagram of a container according to an embodiment of the present application in a water-filled state on a mass comparator;

FIG. 9 is a schematic structural diagram of a container in a weighing state on a mass comparator according to an embodiment of the present application;

fig. 10 is a schematic perspective view of a closure according to an embodiment of the present application;

list of components and reference numbers:

10. a body; 11. an opening; 12. a liquid injection and discharge port; 121. a first channel; 122. a second channel; 123. a third channel; 13. an adjustment port; 14. a notch; 15. a projection; 20. a cover body; 21. an exhaust port; 22. a rib plate; 23. a notch; 24. positioning a groove; 25. a seal ring; 31. a valve core; 32. a connecting rod; 33. a connecting seat; 331. grooving; 34. a spring; 35. an elastic member; 36. a locking groove; 40. a mass comparator; 41. a bearing plate; 42. a table body; 43. a hose.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The containers of the following examples were capable of being filled with a liquid, which may be at least one of water, kerosene, lubricating oil, paraffin, to prepare equivalent standard weights. The following examples are given by way of illustration of water, but are not intended to limit the scope of the present application.

Referring to fig. 1-10, embodiments of the present application disclose a container for making equivalent standard weights, comprising: the body 10 is in an inverted frustum shape, the body 10 is arranged in a hollow mode, and an opening 11 is formed in the top of the body 10; the cover body 20, the cover body 20 is covered at the top opening 11 of the body 10, and the body 10 and the cover body 20 form a loading cavity for loading liquid or granular material. By adopting the body 10 with the inverted circular truncated cone shape, in the transportation process, a plurality of bodies 10 are stacked in the transportation mechanism, which is similar to the stacking of disposable paper cups, so that the occupied space of a container is saved, the transportation is convenient, and the heavy-load storage and transportation process of the traditional standard weight is omitted. The container can be used for quickly manufacturing equivalent standard weights on a verification site, is a closed container after water is loaded, has the characteristics of stable shape and physical and chemical properties along with time, does not change the quality due to environment and transportation, and does not need to consider the problem of stability of the metering value in the verification process of a large amount of Cheng Hengqi.

The container is used for preparing the equivalent standard weights, so that the cost for purchasing the ton-level weights and the cost for tracing the ton-level weights are reduced for large-range scale weighing apparatus manufacturing enterprises, and the factory inspection cost is greatly reduced; the metering verification mechanisms at all levels also reduce the cost for purchasing the ton-level weights, the weight transportation cost and the cost for tracing the sources of the ton-level weights, and the quantity value transfer cost is reduced; meanwhile, a large amount of manufacturing raw materials of the ton-level weight are saved, resources are saved for the society, and after the equivalent standard weight is used, the liquid can be recycled, so that no pollution or resource waste exists.

The container can be filled with water on site to manufacture equivalent standard weights, and the water can be natural water without causing environmental pollution, such as river water, lake water, well water, rainwater, tap water and the like. The natural state water is relatively easy to obtain in the verification field, and if leakage exists, the natural state water cannot cause any environmental pollution problem. In particular, a water reservoir may also be provided specifically at the installation site of the weighing apparatus, or any other form of permissible water reservoir. In particular, in case of coastal areas, seawater may also be used. The water is temporarily borrowed, and after the calibration process of the apparatus to be weighed is finished, the water can be conveyed back to the original place or discharged to the allowed place on the spot, so that the environmental pollution is avoided.

Specifically, referring to fig. 1 to 5, the cover 20 and the body 10 may be separated, a plurality of bodies 10 may be stacked during transportation, a plurality of covers 20 may be stacked, when the container is filled with liquid, the liquid is filled from above the body 10, and when the liquid is filled to a required amount, the body 10 is sealed by the cover 20, and no additional water filling port or water outlet is required. With this arrangement, the radial cross-sectional area of the cover 20 can be set to be larger than the radial cross-sectional area of the top of the body 10, the cover 20 is fastened to the body 10 for sealing, and the cover 20 is fastened to the body 10 in various sealing manners, for example, the cover 20 can be fastened to the body 10 and then locked to the body 10 by a buckle; for example, a sealing portion may be provided below the cover 20, and the sealing portion is in interference fit with the inner side of the body 10, so as to seal the cover 20 to the body 10.

Specifically, referring to fig. 6-7, the cover 20 and the body 10 can be rotatably connected, and when sealing is to be performed, the cover 20 is rotatably fastened above the body 10, and the cover 20 is fastened above the body 10 by a connecting member. When a plurality of bodies 10 are arranged in a stacked mode, the connected cover bodies 20 are also arranged on one side of the bodies 10 in a stacked mode, the bodies 10 can be placed in a crossed and forward and reverse mode in the conveying mechanism, and the occupied space of the container is saved.

In one embodiment, the outer circumference of the body 10 is angled 5-15 degrees from the axis of the body 10. This angle facilitates the stacking of the bodies 10, improves the stability of the container itself, and ensures that the bottom of the body 10 has sufficient thickness. Preferably, the thickness of the bottom of the body 10 is greater than 25mm, the thickness of the periphery of the body 10 is 3mm, and the thickness of the cover 20 is 20mm.

In one embodiment, the loading chamber is provided with a liquid injection and discharge port 12 and an exhaust port 21. During the use, seal lid 20 and body 10 earlier to annotate water from annotating liquid leakage fluid dram 12 to the container in, liquid and flowing back can be realized to one notes liquid leakage fluid dram 12, saves the opening 11 setting of container, improves the leakproofness of container, and the gas in the container is discharged from gas vent 21, practices thrift the time of container preparation equivalent standard weight.

Specifically, the liquid injection and discharge port 12 and the exhaust port 21 may be provided on the lid 20 or on the body 10, and preferably, the liquid injection and discharge port 12 is provided at the bottom of the body 10, the liquid injection and discharge port 12 is sealed by a sealing member, and the exhaust port 21 is provided at the top of the lid 20. When an equivalent standard weight is usually manufactured, a container after water injection is required to be weighed, the liquid injection and discharge port 12 is arranged below the body 10 and can be matched with a special mass comparator 40, and the conversion between the loading working state and the weighing working state can be realized on the mass comparator 40. Referring to fig. 8-9, the container is loaded on the bearing plate 41 of the mass comparator 40, the bearing plate 41 is provided with a liquid inlet channel, water in the liquid inlet channel can enter the loading cavity from the liquid injection and discharge port 12 at the bottom of the body 10, and after loading is completed, the platform 42 is lifted, and the container can be weighed. This setting can realize the container loading under same position and weigh, improves the use convenience of container.

Referring to fig. 4, as an embodiment, the blocking member includes a valve core 31, a connecting rod 32 and a connecting seat 33 which are connected in sequence, the valve core 31 is in an inverted truncated cone shape, and a spring 34 is sleeved on the outer periphery of the connecting rod 32; the liquid injection and discharge port 12 includes a first passage 121 and a second passage 122, the first passage 121 is in an inverted circular truncated cone shape and abuts against the valve body 31, one end of the connecting rod 32 is disposed in the first passage 121, the other end and the connecting seat 33 are disposed in the second passage 122, one end of the spring 34 is connected to the connecting seat 33, and the other end is fixed to the second passage 122. In the water injection process, the water pipe is communicated with the second channel 122, the connecting seat 33 is pushed upwards by the water pipe, the spring 34 is compressed, the connecting rod 32 and the valve core 31 move towards the direction of the loading cavity, water enters the container from the connecting seat 33 and the first channel 121, the valve core 31 is abutted against the first channel 121 again under the action force of the water and the pulling force of the spring 34 when the container is not filled with the water or the container is filled with the water, the valve core 31 resets, the self-sealing of the liquid injection and discharge port 12 is realized, the water in the container is prevented from being leaked, and the stability of the container quantity value is improved; when water needs to be drained, the water pipe can be used for continuously jacking the connecting seat 33 upwards, so that a gap exists between the valve core 31 and the first channel 121, and water in the container flows out of the first channel 121 and the connecting seat 33 to the water pipe in sequence, so that the water is discharged. The setting of above-mentioned shutoff piece can realize intaking by oneself and the drainage to automatic seal after intaking and drainage are accomplished need not the manual work and operates, can improve the sealing performance of container, can practice thrift operating procedure again, improves the use convenience of container.

In one embodiment, the second channel 122 has a locking groove 36, the locking groove 36 is disposed on a side of the connecting seat 33 away from the valve core 31, and an elastic member 35 is disposed in the locking groove 36, and the elastic member 35 can extend or retract along a radial direction of the second channel 122. The elastic component 35 that sets up in the locking groove 36 can lock the water pipe to realize water injection or drainage process, the location of water pipe and shutoff piece treats after water injection or drainage process accomplish, can use external force to take out the water pipe from elastic component 35, and the locking of water pipe can be realized in the setting of this elastic component 35, further improves the practicality of container.

Specifically, the locking groove 36 may be a single groove formed along the radial direction of the second passage 122, one elastic member 35 is disposed in the groove, and the number of the grooves may be two or more; the locking groove 36 may also be an annular groove formed along the radial direction of the second passage 122, an annular elastic member 35 is disposed in the annular groove, and the annular elastic member 35 is tightly hooped in the circumferential direction of the water pipe to lock the water pipe.

As a preferred embodiment, the end of the elastic member 35 away from the locking groove 36, i.e. the free end of the elastic member 35, is provided with a circular arc shape, which facilitates the water pipe to compress the elastic member 35, thereby achieving the locking of the water pipe.

In one embodiment, liquid injection and discharge port 12 further includes a third channel 123, where third channel 123 is disposed between first channel 121 and second channel 122, and a radial cross-sectional area of third channel 123 is equal to a radial cross-sectional area of the bottom of first channel 121 and smaller than a radial cross-sectional area of second channel 122; the connecting rod 32 passes through the first passage 121, the third passage 123 and the second passage 122 in sequence, the radial cross-sectional area of the spring 34 is smaller than that of the third passage 123, and the spring 34 is fixed at the top of the second passage 122. The third channel 123 plays a role in connecting the first channel 121 and the second channel 122, and the radial cross-sectional area of the third channel 123 is smaller than that of the second channel 122, referring to fig. 4, the third channel 123 can play a limiting role in the spring 34, and the spring 34 can be ensured to be timely restored to the original position, so that the self-sealing of the liquid injection and discharge port 12 is realized, and the connecting seat 33 can be prevented from being pushed into the first channel 121 by a water pipe.

As an embodiment, referring to fig. 1, a notch 14 is formed in the bottom periphery of the body 10, an adjusting port 13 communicating with the loading cavity is formed at the notch 14, and the adjusting port 13 is blocked by a blocking piece. The gap 14 is matched with the platform body 42 of the mass comparator 40, the body 10 is placed on the bearing plate 41 of the mass comparator 40 to be loaded in a normal state, after the loading is completed, the platform body 42 of the mass comparator 40 rises to weigh the container, and the arrangement of the adjusting port 13 can be communicated with the hose 43 arranged on the mass comparator 40 in the process of weighing the container by the platform body 42 of the mass comparator 40, so that the fine adjustment of the container mass is realized. Preferably, the structure of the adjustment port 13 is the same as that of the liquid injection/discharge port 12.

In one embodiment, the length of the valve core 31 is smaller than the length of the first channel 121, the valve core 31 abuts against one side of the first channel 121 close to the loading chamber, and after the valve core 31 seals the first channel 121, the first channel 121 has a certain gap, which is beneficial for the compression of the spring 34, so that the connecting rod 32 pushes the valve core 31 to move towards the loading chamber, and the water flow is facilitated, and the water filling and draining efficiency is improved.

As an embodiment, the connection seat 33 is circumferentially provided with a slot 331, when water is filled, the top of the water pipe ejects the connection seat 33 towards the first channel 121, the connecting rod 32 pushes the valve core 31 to move towards the loading cavity, water flows into the loading cavity from the water pipe, the slot 331, the second channel 122, the third channel 123 and the first channel 121, and when water is drained, the flowing direction of the water is opposite.

As an embodiment, a liquid level detector is further disposed on the cover 20, and can detect the water level in the container, so that an operator can know the volume of the water in the container conveniently.

In a general verification process, deviation detection needs to be carried out on the weighing apparatus, namely equivalent standard weights made on site of all containers are placed at 1/4 or 1/2 of the position of the weighing apparatus carrier, and under the verification mode, the verification can be realized only by placing a plurality of containers in a multi-layer mode. In one embodiment, the top of the cover 20 is formed with a positioning groove 24, and the positioning groove 24 is matched with the bottom of the body 10. Under this setting, the body 10 bottom of upper strata container can be placed on lower floor's container constant head tank 24, improves the connection stability between the upper and lower layer container, is convenient for examine and determine going on smoothly of process.

As an embodiment, referring to fig. 1-2, the outer side of the top of the body 10 is provided with protrusions 15 at intervals along the circumferential direction, the inner side of the cover 20 is provided with notches 23 at intervals along the circumferential direction, and the protrusions 15 are engaged with the notches 23 to seal the cover 20 with the body 10. The cover body 20 is covered on the body 10, and the cover body 20 and the body 10 are sealed by pressing and screwing, so that the sealing performance of the container is improved.

In one embodiment, a rib plate 22 is connected to the bottom of the cover 20, and the rib plate 22 abuts against the inner side of the body 10. The lower rib plate 22 is arranged to perform primary sealing on the body 10, and the bulge part 15 and the notch 23 realize secondary sealing of the cover body 20 on the body 10, so that the sealing effect of the container is further improved, and the strength and the rigidity can also be improved.

In one embodiment, a sealing gasket or ring 25 is disposed on a flat surface portion of the lower end surface of the cover 20 and the body 10 for sealing the body 10 and the cover 20.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A container for making equivalent standard weights, comprising:

the body is in an inverted frustum shape, the body is arranged in a hollow mode, and an opening is formed in the top of the body;

the cover body covers the opening at the top of the body, and the body and the cover body form a loading cavity for loading liquid or granular substances.

2. The container for manufacturing equivalent standard weights according to claim 1, wherein the angle between the periphery of the body and the axis of the body is 5-15 °.

3. The container for manufacturing equivalent standard weights according to claim 1, wherein the loading chamber is provided with a liquid injection and drainage port and an air exhaust port.

4. The container for manufacturing equivalent standard weights according to claim 3, wherein the liquid injection and discharge port is arranged at the bottom of the body, the liquid injection and discharge port is sealed by a sealing piece, and the air exhaust port is arranged at the top of the cover body.

5. The container for manufacturing the equivalent standard weights according to claim 4, wherein the blocking piece comprises a valve core, a connecting rod and a connecting seat which are sequentially connected, the valve core is in an inverted truncated cone shape, and a spring is sleeved on the periphery of the connecting rod;

6. The container for manufacturing equivalent standard weights according to claim 5, wherein the second channel is provided with a locking groove, the locking groove is arranged on one side of the connecting seat far away from the valve core, and an elastic piece is arranged in the locking groove and can extend out or retract along the radial direction of the second channel.

7. The container for manufacturing equivalent standard weights according to claim 6, wherein the liquid injection and discharge port further comprises a third channel, the third channel is arranged between the first channel and the second channel, the radial cross-sectional area of the third channel is equal to the radial cross-sectional area of the bottom of the first channel and smaller than the radial cross-sectional area of the second channel, the connecting rod sequentially penetrates through the first channel, the third channel and the second channel, the radial cross-sectional area of the spring is larger than the radial cross-sectional area of the third channel, and the spring is fixed to the top of the second channel.

8. The container for manufacturing the equivalent standard weights according to any one of claims 1 to 7, wherein a notch is formed in the periphery of the bottom of the body, an adjusting port communicated with the loading cavity is formed in the notch, and the adjusting port is sealed by a sealing piece.

9. The container for manufacturing the equivalent standard weights according to any one of claims 1 to 7, wherein a liquid level detector is further arranged on the cover body;

the top of the cover body is provided with a positioning groove, and the positioning groove is matched with the bottom of the body.

10. The container for manufacturing equivalent standard weights according to any one of claims 1 to 7, wherein the outer side of the top of the body is provided with projections at intervals in the circumferential direction, the inner side of the cover body is provided with notches at intervals in the circumferential direction, and the projections are engaged with the notches so that the cover body is sealed with the body.