CN219209013U - Life protector for distillation pot - Google Patents

Abstract

The utility model provides a life protector for a distillation pot, which comprises a life protector main body, a transition connecting pipe and an inner core connecting pipe, wherein the transition connecting pipe is used for being communicated with the interior of the distillation pot, and purified water forms a water seal liquid level in a containing cavity of the life protector main body. When the pressure of the wine steam in the distillation pot is too high, the mixed gas containing the wine steam enters the accommodating cavity through the transition connecting pipe, the water seal liquid level is lowered, and the liquid level in the inner core connecting pipe is raised. Gaseous alcohol can be dissolved in the purified water, and the gas which is not dissolved by the purified water rises along with the liquid level which rises in the inner core connecting pipe and is discharged by the inner core connecting pipe, so that the pressure relief and pressure stabilization of the distillation pot are realized, and the integral integrity and safety of the equipment are ensured. The gaseous alcohol is dissolved in the clean water in the accommodating cavity, so that the condition that the alcohol is exploded when encountering fire is prevented. The clean water of the accommodating cavity is used as a blocking medium, so that the entry of foreign bacteria and dust in the external environment is effectively avoided, and the better food-grade sanitary environment is ensured. In addition, the fire source of the external environment can be prevented from entering the interior of the distillation pot.

Description

Life protector for distillation pot

Technical Field

The utility model relates to the technical field of wine making equipment engineering, in particular to a life protector for a distillation pot.

Background

The distillation is a thermodynamic separation process, which utilizes the difference of the volatility of alcohol and water to heat fermented grains by steam to obtain sufficient heat energy, and the heat energy is cooled by a condensing tube after the boiling point of the heat energy is completely vaporized, so that the heat energy is condensed into liquor, thereby achieving the purpose of separation and collection. Distillation involves three procedures, vaporization, condensation and collection.

The distillation equipment is usually a distillation pot, and the heating mode of the distillation pot is continuously changed, evolved and diversified along with the progress of the development of scientific technology and the increase of the demands of the market end for spirits.

In whisky distillation, a heater in a distillation pot is a device for transferring part of heat of hot fluid to cold fluid, and according to the principle that the boiling point of alcohol is lower than that of water, fermented grains are heated by steam to generate wine steam, and the formed alcohol steam is collected and liquefied into liquid with higher alcohol concentration.

In the working process of the distillation pot, the internal positive pressure/negative pressure of the distillation pot is overproof due to the change of the up-down amplitude of the working temperature in the distillation pot, so that the distillation pot is easy to damage, and the normal use of the distillation pot is influenced.

Disclosure of Invention

The utility model aims to solve the technical problems that when the distiller in the prior art works, the positive pressure/negative pressure in the distiller exceeds standard due to the change of the up-down amplitude of the working temperature in the distiller, so that the distiller is easy to damage and the normal use of the distiller is affected.

In order to solve the technical problems, the utility model provides a life protector for a distillation pot, which comprises a life protector main body, a transition connecting pipe and an inner core connecting pipe, wherein an accommodating cavity is arranged in the life protector main body and is used for accommodating purified water, and a water seal liquid level is formed in the accommodating cavity by the liquid level of the purified water; one end of the transition connecting pipe is connected to the life protector main body, and the joint of the transition connecting pipe and the life protector main body is positioned above the water seal liquid level; the other end of the transition connecting pipe is used for being communicated with the interior of the distillation pot so as to enable the interior of the distillation pot to be communicated with a space, located above the water seal liquid level, of the life protector main body, and enable high-pressure gas in the distillation pot to enter the accommodating cavity; the inner core connecting pipe is arranged in the life protector main body in a penetrating way; one end of the inner core connecting pipe is arranged below the water seal liquid level, and the other end of the inner core connecting pipe is positioned outside the life protector main body; after the high-pressure gas enters the accommodating cavity, the liquid level in the inner core connecting pipe is raised, so that the gas which is not dissolved by the purified water can rise along with the raised liquid level in the inner core connecting pipe and is discharged to the outside of the life protector main body through the inner core connecting pipe.

Optionally, there is a space between the bottom of the inner core adapter and the bottom of the life protector body.

Optionally, the extension direction of the inner core adapter is consistent with the height direction of the life protector body, and the end of the inner core adapter extends out of the life protector body from the top of the life protector body.

Optionally, the transition adapter is connected to one side of the life protector body, and an extending direction of the transition adapter is perpendicular to a height direction of the life protector body.

Optionally, a liquid level line is arranged on the life protector main body, and the liquid level line corresponds to a half position of the height of the life protector main body; before the high-pressure gas enters the accommodating cavity, the initial water seal liquid level is positioned at the liquid level line.

Optionally, a liquid level interface is further arranged on the life protector main body, and the liquid level interface is used for installing a liquid level meter so as to measure the liquid level in the accommodating cavity; the liquid level interfaces are arranged in two, one liquid level interface is arranged below the liquid level line, and the other liquid level interface is arranged above the liquid level line.

Optionally, the life protector further comprises a first flange connector provided on a circumferential side of an end of the inner core adapter located outside the life protector body, the first flange connector being for connection with a chimney.

Optionally, the inner core adapter tube includes main part and turn-ups portion, main part wears to establish in the life protector main part and the one end of main part is arranged the outside of life protector main part, turn-ups portion bend and connect the main part is located the outside tip of life protector main part, first flange joint spare ring is established the week side of main part and with turn-ups portion looks butt.

Optionally, the bottom of life protector main part interval is equipped with inlet and drain, the inlet is used for to let in the water purification in the holding chamber, the drain is used for with the filth in the holding chamber is discharged.

Optionally, the life protector body includes a cylinder having both ends open and hollow inside, a bottom end portion closing the bottom of the cylinder, and a top end portion provided at the top of the cylinder, the top end portion being tapered.

According to the technical scheme, the beneficial effects of the utility model are as follows: in the life protector for the distillation pot, the transition connecting pipe of the life protector is communicated with the interior of the distillation pot. The water seal liquid level is formed in the holding cavity of the life protector main body by the purified water, and the end part of the inner core connecting pipe stretches into the lower part of the water seal liquid level. When the pressure of the wine steam in the distillation pot is too high, the high-temperature high-pressure gas mixed with the wine steam can enter the accommodating cavity through the transition connecting pipe, the water seal liquid level in the accommodating cavity is lowered, and the liquid level in the inner core connecting pipe is raised. The gaseous alcohol in the wine steam can be dissolved in the purified water, and the high-pressure high-temperature gas which is not dissolved by the purified water rises along with the liquid level rising in the inner core connecting pipe and is discharged to the outside of the life protector main body from the end part of the inner core connecting pipe, so that the pressure relief and pressure stabilization of the distillation pot are realized, and the integral integrity and safety of the equipment are ensured. Meanwhile, the gaseous alcohol can be dissolved in the purified water in the accommodating cavity, so that the combustible gas such as ethanol gas is prevented from being discharged out of the external environment, and the condition that the ethanol is exploded when meeting fire is prevented. Secondly, the interior of the distillation pot is communicated with the external environment through the life protector, and the life protector is used as an intermediate carrier for connecting the distillation pot with the external atmosphere, so that the interior of the distillation pot is not directly communicated with the external environment, and a blocking medium in the intermediate carrier is water for accommodating the cavity, so that the entering of mixed bacteria and dust in the external environment into the distillation pot is effectively avoided, and the better food-grade sanitary environment in the distillation pot is ensured. Again, the life protector can also prevent the fire source of the external environment from entering the interior of the retort. In addition, the distillation pot is intermittent production, the volume of the distillation pot can be reduced in the cooling process after the last batch of distillation is finished, and external atmosphere can enter the distillation pot through the life protector to play a role in stabilizing and regulating pressure so as to balance the condition that negative pressure exceeds standard in the distillation pot.

Drawings

Fig. 1 is a schematic view of the construction of an embodiment of the life protector for a retort according to the present utility model.

Fig. 2 is a top view of the life protector shown in fig. 1.

The reference numerals are explained as follows: 100. a life protector; 10. a life protector body; 101. a receiving chamber; 11. a cylinder; 12. a bottom end portion; 13. a distal end portion; 14. a liquid inlet; 15. a sewage outlet; 16. a liquid level line; 17. a first liquid level interface; 18. a second liquid level interface; 20. a transition connecting pipe; 21. a connecting pipe main body; 22. a bending part; 30. an inner core connecting pipe; 31. a main body portion; 32. a burring part; 40. a first flange connection; 50. and a second flange connection.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present application, it should be understood that in the embodiments shown in the drawings, indications of directions or positional relationships (such as up, down, left, right, front, rear, etc.) are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or elements referred to must have a particular orientation, be configured and operated in a particular orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.

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

Referring to fig. 1 and 2, an embodiment of the present application provides a life protector 100 for a retort, which includes a life protector body 10, a transition takeover 20, and an inner core takeover 30.

The life protector body 10 is internally provided with a containing cavity 101, the containing cavity 101 is used for containing purified water, and the liquid level of the purified water forms a water seal liquid level in the containing cavity 101. One end of the transition connecting pipe 20 is connected to the life protector main body 10, and the joint of the transition connecting pipe 20 and the life protector main body 10 is positioned above the water seal liquid level. The other end of the transition nipple 20 is adapted to communicate with the interior of the retort so that the interior of the retort communicates with the space of the life protector body 10 above the water seal liquid level so that high pressure gas inside the retort can enter the accommodating chamber 101. The core connection pipe 30 is penetrated in the life protector body 10, one end of the core connection pipe 30 is arranged below the water seal liquid level, and the other end is positioned outside the life protector body 10.

Wherein, after the high pressure gas enters the accommodating chamber 101, the liquid level inside the inner core connection pipe 30 is raised so that the gas not dissolved by the purified water can rise along with the raised liquid level inside the inner core connection pipe 30 and be discharged to the outside of the life protector body 10 through the inner core connection pipe 30.

The life protector 100 of the present application is used in conjunction with a retort, which is typically a copper shell structure. The distiller is mainly used for distilling spirits such as whiskey, namely, fermented grains are heated by steam to obtain sufficient heat energy, then cooled by a condenser tube, finally condensed into liquor, and separated and collected.

In actual use, the retort communicates with the life protector body 10 through the transition piece 20. The distiller heats fermented grains by steam, and high-pressure and high-temperature wine steam is generated in the distiller. When the pressure of the wine vapor in the interior of the distillation pot is too high, the wine vapor enters the accommodating chamber 101 through the transition pipe 20. Since the end of the inner core connecting pipe 30 extends below the water seal liquid level, wine steam enters the accommodating cavity 101 to increase the air pressure in the accommodating cavity 101, the water seal liquid level in the accommodating cavity 101 is lowered, and the liquid level in the inner core connecting pipe 30 is raised. The alcohol in the gaseous state in the wine vapor can be dissolved in the purified water, and the high pressure and high temperature gas which is not dissolved by the purified water rises with the liquid level raised inside the inner nipple 30 and is discharged to the outside of the life protector body 10 from the end of the inner nipple 30.

By connecting the life protector 100 to the distillation pot, when the overpressure/negative pressure in the pot exceeds standard due to distillation operation, temperature change and the like in the distillation pot, high-temperature and high-pressure gas in the distillation pot can enter the life protector 100 and be discharged to the outside of the life protector main body 10 through the inner core connecting pipe 30, so that the pressure in the distillation pot is effectively reduced, the safety of the copper shell structure of the distillation pot is protected, and the overall safety of equipment is improved. Meanwhile, after the high-temperature and high-pressure gas mixed with the ethanol enters the life protector 100, the ethanol gas can be dissolved in the purified water in the accommodating cavity 101, so that the combustible gas such as the ethanol gas is prevented from being discharged out of the external environment, and the condition that the ethanol is exploded when meeting fire is prevented. In addition, life protector 100 connects in the front end of still, and the inside life protector 100 that is through life protector 100 communicates with the external environment of still, and the inside indirect external environment intercommunication of still can avoid effectively that the miscellaneous fungus and the dust of external environment get into the still to ensure the inside better food level environment of still.

In the present embodiment, the life protector body 10 includes a cylinder 11, a bottom end portion 12, and a top end portion 13. The cylinder 11 is open at both ends and hollow in the inside, and the bottom end 12 closes the bottom of the cylinder 11. A tip end portion 13 is provided at the top of the cylinder 11, and the tip end portion 13 is tapered. The tapered top end 13 helps the whole life protector body 10 bear the gas pressure, and ensures the whole structural stability of the speech indicator body.

The bottom end 12 of the present embodiment is a flat plate structure, and in other examples of the present embodiment, the bottom end 12 may be a head structure, which is not limited thereto.

In this embodiment, the life protector body 10 is provided with a liquid inlet 14 and a drain 15, and the liquid inlet 14 and the drain 15 are provided at intervals on the bottom end 12 of the life protector body 10. Wherein, the liquid inlet 14 is used for introducing clean water into the accommodating cavity 101 of the life protector main body 10, and the sewage outlet 15 is used for discharging dirt in the accommodating cavity 101 of the life protector main body 10.

The life protector 100 of the present application is used in combination with a retort for heating the vapor of fermented grains, and then cooling and condensing the vapor to obtain a liquid. The distiller belongs to food-grade equipment, and is communicated with the external environment through the life protector 100 to realize pressure relief and stabilization, and is not directly communicated with the external environment. Dirt such as dust in the external environment is directly gathered at the bottom of the life protector body 10 after entering from the inner core connection pipe 30, so as to avoid entering into the retort, and ensure that the retort achieves the better food grade standard. Dirt deposited on the bottom of the life protector body 10 can be finally discharged from the drain 15.

In addition, the distillation pot for the strong wine is produced intermittently, and the last batch is steamed and then the next batch is steamed. The internal gas volume of the distillation pot is reduced in the cooling process, at this time, the life protector 100 can suck fresh air for supplementing through the inner core connecting pipe 30, and the water seal liquid level in the accommodating cavity 101 also plays a role in purifying and filtering, so that external dust is deposited at the bottom of the life protector main body 10, and then flows out from the sewage outlet 15.

In this embodiment, the life protector body 10 is provided with a liquid level line 16, the liquid level line 16 is disposed on the cylinder 11, and the liquid level line 16 corresponds to a half position of the height of the life protector body 10. Before the life protector 100 is used, clean water is introduced into the accommodating cavity 101 of the life protector body 10 through the liquid inlet 14, so that the initial water seal liquid level of the clean water is positioned at the liquid level line 16.

In addition, the life protector body 10 is also provided with a liquid level interface for installing a liquid level meter. By means of the level gauge, the level value of the water seal liquid level in the accommodating cavity 101 of the life protector body 10 can be directly read out, so that the change of the liquid level in the accommodating cavity 101 is directly observed.

The liquid level interface of the present embodiment is provided with two liquid level interfaces, namely a first liquid level interface 17 and a second liquid level interface 18. A first fluid level connection 17 and a second fluid level connection 18 are provided on the side wall of the cylinder 11, wherein the first fluid level connection 17 is arranged above the fluid level line 16 and the second fluid level connection 18 is arranged below the fluid level line 16.

Further, in the present embodiment, the core takeover 30 is pierced in the life protector body 10 by the tip end portion 13, the tip end portion 13 is provided with a through hole through which the core takeover 30 is pierced, and the extending direction of the core takeover 30 coincides with the height direction of the life protector body 10. The core takeover 30 of the present embodiment includes a main body portion 31 and a burring portion 32, the main body portion 31 is provided in the life protector main body 10 in a penetrating manner and one end of the main body portion 31 is arranged outside the protection main body, and the other end of the main body portion 31 is arranged below the water seal liquid level. The burring 32 is bent and connected to an end of the main body 31 located outside the life protector main body 10.

The life protector 100 also includes a first flange connector 40. The first flange connector 40 is provided around the end of the main body 31 outside the life protector main body 10, the first flange connector 40 is abutted against the burring 32, and the first flange connector 40 is used for connection with a chimney. The high temperature and high pressure gas which is not dissolved by the purified water is discharged to the outside environment through the chimney by passing upwards through the inner core connecting pipe 30. The first flange connector 40 of the present embodiment may be a flange.

The bottom end of the core takeover 30 of the present embodiment has a space between the bottom end 12 of the life protector body 10. This arrangement ensures that a certain running water gap is maintained between the bottom end of the inner core connection pipe 30 and the bottom of the life protector body 10, so that the inside of the inner core connection pipe 30 is communicated with the accommodating chamber 101 of the life protector body 10. In the initial state, the water seal liquid level in the accommodating cavity 101 is consistent with the liquid level in the inner core connecting pipe 30; when the high-temperature and high-pressure mixed gas in the distillation pot enters the accommodating cavity 101, the water seal liquid level of the accommodating cavity 101 is lowered, and the liquid level in the inner core connecting pipe 30 is raised.

In this embodiment, one end of the transition adapter 20 is connected to one side of the cylinder 11, and the other end is used to communicate with the interior of the retort. The transition adapter 20 of the embodiment includes an adapter body 21 and a bending portion 22 connected to an end of the adapter body 21, one end of the adapter body 21 is connected to a side wall of the cylinder 11, and the bending portion 22 is connected to an end of the adapter body 21 facing away from the cylinder 11.

The life protector 100 of the present embodiment further includes a second flange connector 50, and the second flange connector 50 may be a flange. The second flange connector 50 is disposed around one end of the adapter body 21 facing away from the cylinder 11, and abuts against the bending portion 22. The transition piece 20 is connected to the retort by the second flange connection 50 such that the interior of the retort communicates with the receiving cavity 101 of the life protector body 10 through the transition piece 20.

In this embodiment, the junction of the transition piece 20 with the life protector body 10 is located above the water seal level, i.e. the junction of the transition piece 20 with the life protector body 10 is located above the level line 16. When the air pressure in the distillation pot is too large, the mixed gas with high temperature and high pressure can directly enter the space above the water seal liquid level in the life protector main body 10 through the transition connecting pipe 20, so that the water seal liquid level in the accommodating cavity 101 is lowered, and the liquid level in the inner core connecting pipe 30 is raised.

In actual use, the retort communicates with the life protector body 10 through the transition piece 20. When the pressure of the wine vapor in the distillation pot is too high, the high-temperature high-pressure gas mixed with the wine vapor enters the accommodating cavity 101 through the transition connecting pipe 20. Since the end of the inner core connecting pipe 30 extends below the water seal liquid level, the high-temperature high-pressure mixed gas enters the accommodating cavity 101 to increase the air pressure in the accommodating cavity 101, the water seal liquid level in the accommodating cavity 101 is lowered, and the liquid level in the inner core connecting pipe 30 is raised. The alcohol in the gaseous state in the wine vapor can be dissolved in the purified water, and the high pressure and high temperature gas which is not dissolved by the purified water rises with the liquid level raised inside the inner nipple 30 and is discharged to the outside of the life protector body 10 from the end of the inner nipple 30.

For the life protector for a retort of the present application, the life protector communicates with the interior of the retort through a transition nipple. The water seal liquid level is formed in the holding cavity of the life protector main body by the purified water, and the end part of the inner core connecting pipe stretches into the lower part of the water seal liquid level. When the pressure of the wine steam in the distillation pot is too high, the high-temperature high-pressure gas mixed with the wine steam can enter the accommodating cavity through the transition connecting pipe, the water seal liquid level in the accommodating cavity is lowered, and the liquid level in the inner core connecting pipe is raised. The gaseous alcohol in the wine steam can be dissolved in the purified water, and the high-pressure high-temperature gas which is not dissolved by the purified water rises along with the liquid level rising in the inner core connecting pipe and is discharged to the outside of the life protector main body from the end part of the inner core connecting pipe, so that the pressure relief and pressure stabilization of the distillation pot are realized, and the integral integrity and safety of the equipment are ensured. Secondly, the interior of the distillation pot is communicated with the external environment through the life protector, and the life protector is used as an intermediate carrier for connecting the distillation pot with the external atmosphere, so that the interior of the distillation pot is not directly communicated with the external environment, and a blocking medium in the intermediate carrier is water for accommodating the cavity, so that the entering of mixed bacteria and dust in the external environment into the distillation pot is effectively avoided, and the better food-grade sanitary environment in the distillation pot is ensured. Again, the life protector can also prevent the fire source of the external environment from entering the interior of the retort. In addition, the distillation pot is intermittent production, the volume of the distillation pot can be reduced in the cooling process after the last batch of distillation is finished, and external atmosphere can enter the distillation pot through the life protector to play a role in stabilizing and regulating pressure so as to balance the condition that negative pressure exceeds standard in the distillation pot.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A life protector for a retort, comprising:

the life protector comprises a life protector main body, wherein an accommodating cavity is arranged in the life protector main body and is used for accommodating purified water, and a water seal liquid level is formed in the accommodating cavity by the liquid level of the purified water;

one end of the transition connecting pipe is connected to the life protector main body, and the joint of the transition connecting pipe and the life protector main body is positioned above the water seal liquid level; the other end of the transition connecting pipe is used for being communicated with the interior of the distillation pot so as to enable the interior of the distillation pot to be communicated with a space, located above the water seal liquid level, of the life protector main body, and enable high-pressure gas in the distillation pot to enter the accommodating cavity;

an inner core connecting pipe penetrating through the life protector main body; one end of the inner core connecting pipe is arranged below the water seal liquid level, and the other end of the inner core connecting pipe is positioned outside the life protector main body;

after the high-pressure gas enters the accommodating cavity, the liquid level in the inner core connecting pipe is raised, so that the gas which is not dissolved by the purified water can rise along with the raised liquid level in the inner core connecting pipe and is discharged to the outside of the life protector main body through the inner core connecting pipe.

2. The life protector for a retort of claim 1, wherein a space is provided between a bottom of the inner core adapter and a bottom of the life protector body.

3. The life protector for a retort pot according to claim 1, wherein the extension direction of the core takeover coincides with the height direction of the life protector body, and the end of the core takeover protrudes from the top of the life protector body to the outside of the life protector body.

4. The life protector for a distillation pot according to claim 1 wherein the transition nipple is connected to one side of the life protector body, and an extending direction of the transition nipple is perpendicular to a height direction of the life protector body.

5. The life protector for a distillation pot according to claim 1 wherein a liquid level line is provided on the life protector body, the liquid level line corresponding to a half position of the height of the life protector body; before the high-pressure gas enters the accommodating cavity, the initial water seal liquid level is positioned at the liquid level line.

6. The life protector for a distillation pot according to claim 5 wherein a liquid level interface is further provided on the life protector body, the liquid level interface being for mounting a liquid level gauge to measure a liquid level in the accommodation chamber; the liquid level interfaces are arranged in two, one liquid level interface is arranged below the liquid level line, and the other liquid level interface is arranged above the liquid level line.

7. The life protector for a retort of claim 1, further comprising a first flange connector provided at a circumferential side of an end of the inner core adapter located outside the life protector body, the first flange connector being for connection with a chimney.

8. The life protector for a retort according to claim 7, wherein the inner core adapter includes a body portion penetrating in the life protector body and having one end disposed outside the life protector body, and a burring portion bent to be connected to an end of the body portion located outside the life protector body, and the first flange connector is annularly provided on a circumferential side of the body and abutted against the burring portion.

9. The life protector for a retort according to claim 1, wherein the bottom of the life protector body is provided with a liquid inlet and a drain at intervals, the liquid inlet being used for introducing purified water into the accommodating chamber, and the drain being used for discharging dirt in the accommodating chamber.

10. The life protector for a retort pot according to claim 1, wherein the life protector main body comprises a cylindrical body which is open at both ends and hollow in the inside, a bottom end portion which closes the bottom of the cylindrical body, and a top end portion which is provided at the top of the cylindrical body, the top end portion being tapered.

Images