Ventilation type freezing pen

Abstract

The utility model discloses a ventilation type freezing pen which comprises a stabbing tool assembly, a control assembly, a nozzle assembly and a gas storage bottle, the stabbing tool assembly comprises a generating shell and a stabbing tool body, and the generating shell is screwed at the first end of a shell so as to be matched with a stabbing head on the stabbing tool body to stabbing the gas storage bottle; cooling compressed gas in the gas storage cylinder flows into the first gas passing channel; the nozzle assembly comprises a nozzle opening and a first filtering unit, the first filtering unit is used for filtering the cooled compressed gas in the first gas flowing channel and then conveying the cooled compressed gas to the second gas flowing channel, and the nozzle opening is used for releasing the cooled compressed gas to a part needing treatment through the second gas flowing channel; and the control assembly is used for controlling the connection and disconnection of the first air flowing channel and the second air flowing channel. According to the ventilation type freezing pen, through cooperation of the stabbing tool assembly, the control assembly, the nozzle assembly and the gas storage bottle, the whole freezing pen does not need to be placed in liquid nitrogen to be cooled, the cooling time is greatly shortened, and the treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, especially relates to a ventilation type frozen pen. BACKGROUND

[0002] The frozen pen is designed according to the principle of frozen beauty. The main mechanism is that ice crystals are formed in and outside the tissue cells by sudden cooling, and the structure is destroyed and lysed; at the same time, the cells are dehydrated, the electrolyte is concentrated, the pH value is changed, the protein is denatured, and the cells are metabolized and die. According to this principle, the neoplasm that is harmful to skin beauty, such as freckle, black mole and pigment spot, is frozen to make the tissue cells denatured, necrotic and shed, so as to achieve the purpose of treatment and beauty.

[0003] The existing frozen pen is usually placed in a frozen medium such as liquid nitrogen for cooling before use, and then taken out to contact the treatment position after being cooled to the preset temperature. Obviously, the above-mentioned method is used to cool the frozen pen, and the cooling time is too long, and the treatment efficiency is low. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a ventilation type frozen pen to solve the problem of long cooling time of the cooling mode of the conventional frozen pen in the prior art and low treatment efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A ventilation type frozen pen comprises a shell, a lance assembly, a control assembly, a nozzle assembly and a gas cylinder, wherein:

[0007] The lance assembly comprises a generating shell and a lance body, the generating shell is provided with a containing cavity for placing the gas cylinder, the generating shell is detachably mounted on the first end of the shell through a threaded structure, the gas cylinder contains cooling compressed gas for treatment, the lance body is mounted on the first end of the shell, the lance body is provided with a puncture head for piercing the gas cylinder, a first gas flow channel is formed through the lance body, and the generating shell is tightened on the first end of the shell to cooperate with the puncture head on the lance body to pierce the gas cylinder, so that the cooling compressed gas in the gas cylinder flows into the first gas flow channel.

[0008] The nozzle assembly comprises a nozzle port and a first filtering unit, the nozzle port is detachably mounted at the second end of the shell, the first filtering unit is arranged between the nozzle port and the shell, a second air passage is formed through the nozzle port, the first air passage is communicated with the second air passage, the first filtering unit is configured to filter and deliver the cooling compressed gas in the first air passage to the second air passage, and the nozzle port is configured to release the cooling compressed gas to the treatment site through the second air passage.

[0009] The control assembly is arranged at the middle part of the shell, and is configured to control the opening and closing of the first air passage and the second air passage.

[0010] Further, the first filtering unit comprises a Teflon sealing ring and a first filtering screen, the nozzle port has an extending end, the Teflon sealing ring is sleeved on the extending end, and the first filtering screen is detachably mounted on the end face of the extending end of the nozzle port.

[0011] Further, the first end of the shell is provided with a limiting assembly, and the limiting assembly is configured to limit the insertion depth of the puncture head of the lance body into the gas storage cylinder.

[0012] Further, the limiting assembly comprises a limiting sleeve and a second filtering unit, the limiting sleeve is mounted at the first end of the shell through a threaded structure, the first end of the limiting sleeve is connected with the lance body, the first air passage is formed through the limiting sleeve, the second filtering unit comprises a first sealing member and a second filtering screen, a first sealing groove is formed at the second end of the limiting sleeve, the first sealing member is arranged in the first sealing groove, and the second filtering screen is detachably mounted at the second end of the limiting sleeve and connected with the first air passage.

[0013] Further, the control assembly comprises a valve body, an operating assembly and an opening and closing assembly, wherein:

[0014] The valve body is fixedly mounted at the middle part of the shell, the first end of the valve body abuts against the second end of the limiting assembly, a first communication cavity and a second communication cavity are formed through the valve body, the opening and closing assembly is movably arranged in the first communication cavity, the operating assembly is movably arranged in the second communication cavity, the first end of the first communication cavity is communicated with the first air passage, the second end of the first communication cavity is communicated with the first end of the second communication cavity, the second end of the second communication cavity is communicated with the second air passage, and the opening and closing assembly can be switched to a first state and a second state.

[0015] The on-off assembly disconnects the first communication cavity from the second communication cavity when the on-off assembly is in the first state.

[0016] The on-off assembly connects the first communication cavity with the second communication cavity when the on-off assembly is in the second state.

[0017] The operating assembly is configured to switch the on-off assembly from the first state to the second state.

[0018] Further, the on-off assembly comprises a valve core and a first reset spring, the valve body is provided with a first sealing step, a second sealing step is provided on the valve core corresponding to the first sealing step, the valve core is movably arranged in the first communication cavity, the first end of the first reset spring is mounted on the limiting assembly, and the valve core is mounted on the second end of the first reset spring. When the on-off assembly is in the first state, the first reset spring pushes the valve core away from the limiting assembly by elastic force to make the second sealing step abut against the first sealing step, thereby disconnecting the first communication cavity from the second communication cavity. The operating assembly pushes the valve core to move close to the limiting assembly to make the second sealing step move away from the first sealing step, thereby forming a gap between the first communication cavity and the first communication cavity for the cooling compressed gas to pass through.

[0019] Further, the operating assembly comprises an operating part, a valve push rod and a second reset spring, the valve push rod is movably arranged in the second communication cavity, the first end of the second reset spring abuts against the valve body, the valve push rod is mounted on the second end of the second reset spring, the first end of the operating part is located outside the shell, and the second end of the operating part is connected with the valve push rod. Operating the operating part makes the operating part push the valve push rod to move close to the limiting assembly after overcoming the elastic force of the second reset spring, thereby forming a gap between the first communication cavity and the first communication cavity for the cooling compressed gas to pass through.

[0020] Further, the second communication cavity is provided with a first valve core sealing ring and a second valve core sealing ring, the first valve core sealing ring is sleeved on the first end of the valve push rod, and the second valve core sealing ring is sleeved on the second end of the valve push rod.

[0021] Further, the valve core is made of polytetrafluoroethylene.

[0022] Further, the first end cover is provided with a second sealing groove at the first end, and a second sealing element is detachably arranged in the second sealing groove; the first end cover is provided with a third sealing groove at the second end, and a third sealing element is detachably arranged in the third sealing groove; and the first end cover is sealingly connected with the valve body through the second sealing element and the third sealing element.

[0023] Compared with the prior art, the beneficial effects of the vented freezing pen are as follows: through cooperation of the stab assembly, the control assembly, the nozzle assembly and the gas cylinder, the shell is screwed to the first end of the shell body, the puncture head on the stab body punctures the gas cylinder, the cooling compressed gas in the gas cylinder flows into the first gas flow channel, the first filter unit filters the cooling compressed gas in the first gas flow channel and then delivers the cooling compressed gas to the second gas flow channel, and the nozzle releases the cooling compressed gas to the treatment site through the second gas flow channel, without the need of placing the freezing pen as a whole into liquid nitrogen for cooling, so that the cooling time is greatly shortened and the treatment efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present application, the drawings needed in the background art and embodiment description of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the contents of the embodiments of the present application and the drawings.

[0025] Figure 1 is a perspective structural schematic view of the vented freezing pen provided by the embodiments of the present application;

[0026] Figure 2 is a sectional structural schematic view of the vented freezing pen provided by the embodiments of the present application;

[0027] Figure 3 is Figure 2 is an enlarged schematic view of position A in FIG.

[0028] Figure 4 is Figure 2 is an enlarged schematic view of position B in FIG.

[0029] Figure 5 is Figure 2 is an enlarged schematic view of position C in FIG. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be further illustrated by specific embodiments in combination with the drawings.

[0031] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood. It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be an intervening component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be an intervening component. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for the purpose of illustration only and are not intended to be limiting. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] Please refer to Figures 1 to 5 As shown in the drawings, in the embodiment, a vented cold pen comprises a shell 1, a lance assembly 2, a control assembly 3, a nozzle assembly 4 and a gas cylinder 5, wherein: the lance assembly 2 comprises a generating shell 20 and a lance body 21, the generating shell 20 is provided with a containing cavity 200 for placing the gas cylinder 5, the generating shell 20 is detachably installed on the first end of the shell 1 through a threaded structure, the gas cylinder 5 contains cooling compressed gas used for treatment, the lance body 21 is installed on the first end of the shell 1, the lance body 21 is provided with a puncture head for puncturing the gas cylinder 5, a first gas flow channel 10 is formed through the lance body 21, the generating shell 20 is tightened on the first end of the shell 1 to cooperate with the puncture head on the lance body 21 to puncture the gas cylinder 5, so that the cooling compressed gas in the gas cylinder 5 flows into the first gas flow channel 10; the nozzle assembly 4 comprises a nozzle port 40 and a first filter unit, the nozzle port 40 is detachably installed on the second end of the shell 1, the first filter unit is arranged between the nozzle port 40 and the shell 1, a second gas flow channel 11 is formed through the nozzle port 40, the first gas flow channel 10 and the second gas flow channel 11 are in communication, the first filter unit is configured to filter the cooling compressed gas in the first gas flow channel 10 and then deliver the cooling compressed gas to the second gas flow channel 11, the nozzle port 40 is configured to release the cooling compressed gas to a part to be treated through the second gas flow channel 11; the control assembly 3 is located in the middle of the shell 1, and the control assembly 3 is configured to control the on-off of the first gas flow channel 10 and the second gas flow channel 11.

[0033] It can be seen that through the cooperation of the lance assembly 2, the control assembly 3, the nozzle assembly 4 and the gas cylinder 5, the first end of the shell 20 is screwed to the shell 1, the piercing head on the lance body 21 pierces the gas cylinder 5, the cooling compressed gas in the gas cylinder 5 flows into the first gas flow channel 10, the first filter unit filters the cooling compressed gas in the first gas flow channel 10 and then delivers it to the second gas flow channel 11, and the nozzle opening 40 releases the cooling compressed gas to the treatment site through the second gas flow channel 11. Without placing the cryopencil as a whole in liquid nitrogen for cooling, the cooling time is greatly shortened and the treatment efficiency is improved.

[0034] Specifically, the shell 1 and the generating shell 20 are made of materials with low thermal conductivity, which protects the operator while reducing the temperature rise of the cooling compressed gas.

[0035] Specifically, the piercing head is provided as a sharp sharp blade, which facilitates penetration into the interior of the gas cylinder 5, and a first gas flow channel 10 is provided through the lance body 21, which realizes the discharge of the cooling compressed gas in the gas cylinder 5 after the gas cylinder 5 is pierced.

[0036] Specifically, the generating shell 20 is provided with a ventilation passage, which facilitates the discharge of the cooling compressed gas through the ventilation passage when the gas cylinder 5 leaks, avoiding direct contact between the cooling compressed gas in the gas cylinder 5 and the operator, and further ensuring the safety of the operator.

[0037] Specifically, the lance body 21 is provided with a lance inner sealing ring 210 and a cylinder side sealing ring 211 at both ends, respectively, and in use, the lance inner sealing ring 210 seals the inside of the lance body 21, and the cylinder side sealing ring 211 seals the gas outlet end of the gas cylinder 5.

[0038] It should be noted that the outlet diameter of the nozzle opening 40 is between 0.1-3mm, which can be adjusted according to actual needs, and the nozzle opening 40 is provided with a pen head sleeve 400, which is installed on the second end of the shell 1 through a threaded structure. The pen head sleeve 400 has a threaded structure that can easily protect the nozzle opening 40 and isolate pollution. The gas cylinder 5 can be used to store cooling compressed gases such as carbon dioxide and nitrous oxide, and is not limited to one of them.

[0039] As an embodiment, the first filter unit includes a fluorine sealing ring 41 and a first filter screen 42, the nozzle opening 40 has an extending end, the fluorine sealing ring 41 is sleeved on the extending end, and the first filter screen 42 is detachably installed on the end face of the extending end of the nozzle opening 40. Obviously, by providing the fluorine sealing ring 41 and the first filter screen 42, the service life of the first filter unit is greatly improved.

[0040] Specifically, the fluorine sealing ring 41 is made of polytetrafluoroethylene material.

[0041] As an implementation, the first end of the shell 1 is provided with a limiting assembly 6, which is configured to limit the depth of the puncture head of the lance body 21 inserted into the gas cylinder 5.

[0042] As an implementation, the limiting assembly 6 includes a limiting sleeve 60 and a second filtering unit, the limiting sleeve 60 is installed at the first end of the shell 1 through a threaded structure with adjustable extension length, the first end of the limiting sleeve 60 is connected with the lance body 21, the limiting sleeve 60 is provided with a first gas flow channel 10, the second filtering unit includes a first sealing piece 61 and a second filtering screen 62, the second end of the limiting sleeve 60 is provided with a first sealing groove, the first sealing piece 61 is located in the first sealing groove, and the second filtering screen 62 is detachably installed at the second end of the limiting sleeve 60 and connected with the first gas flow channel 10.

[0043] Specifically, the second filtering screen 62 can also be replaced by a filter sheet.

[0044] As an implementation, the control assembly 3 includes a valve body 30, an operating assembly and an on-off assembly, wherein: the valve body 30 is fixedly installed at the middle part of the shell 1, the first end of the valve body 30 abuts against the second end of the limiting assembly 6, the valve body 30 is provided with a first communication cavity 31 and a second communication cavity 32, the on-off assembly is movably arranged in the first communication cavity 31, the operating assembly is movably arranged in the second communication cavity 32, the first end of the first communication cavity 31 is communicated with the first gas flow channel 10, the second end of the first communication cavity 31 is communicated with the first end of the second communication cavity 32, the second end of the second communication cavity 32 is communicated with the second gas flow channel 11, and the on-off assembly can be switched to a first state and a second state; when the on-off assembly is in the first state, the on-off assembly disconnects the first communication cavity 31 and the second communication cavity 32; when the on-off assembly is in the second state, the on-off assembly connects the first communication cavity 31 and the second communication cavity 32; and the operating assembly is configured to switch the on-off assembly from the first state to the second state.

[0045] As an implementation form, the on-off assembly comprises the valve core 33 and the first reset spring 34, the valve body 30 is provided with the first sealing step 300, the second sealing step 330 corresponding to the first sealing step 300 is formed on the valve core 33, the valve core 33 is movably arranged in the first communication cavity 31, the first end of the first reset spring 34 is mounted on the limiting assembly 6, and the valve core 33 is mounted on the second end of the first reset spring 34. When the on-off assembly is in the first state, the first reset spring 34 pushes the valve core 33 away from the limiting assembly 6 by the elastic force to abut the second sealing step 330 against the first sealing step 300, so that the first communication cavity 31 is disconnected with the second communication cavity 32, and the operating assembly pushes the valve core 33 to move to the limiting assembly 6 by overcoming the elastic force of the first reset spring 34, so as to drive the second sealing step 330 to move away from the first sealing step 300, and the gap for the cooling compressed gas to pass through is formed between the first communication cavity 31 and the first communication cavity 31.

[0046] As an implementation form, the operating assembly comprises the operating part 35, the valve push rod 36 and the second reset spring 37, the valve push rod 36 is movably arranged in the second communication cavity 32, the first end of the second reset spring 37 abuts against the valve body 30, the valve push rod 36 is mounted on the second end of the second reset spring 37, the first end of the operating part 35 is located outside the shell 1, and the second end of the operating part 35 is connected with the valve push rod 36. The operating part 35 is operated, so that the operating part 35 pushes the valve push rod 36 to move to the limiting assembly 6 by overcoming the elastic force of the second reset spring 37, so as to drive the second sealing step 330 to move away from the first sealing step 300, and the gap for the cooling compressed gas to pass through is formed between the first communication cavity 31 and the first communication cavity 31.

[0047] Specifically, the operating part 35 is an operating rod in an L-shaped structure, and a groove is formed between the operating rod and the valve body 30 to form a lever structure, which functions to push and move the valve push rod 36.

[0048] As an implementation form, the plastic push rod sleeve 12 and the button sleeve 13 are detachably arranged at the first end of the operating part 35 on the shell 1, and the plastic push rod sleeve 12 and the button sleeve 13 are made of non-metallic materials. While beautifying the operating part 35, the plastic push rod sleeve 12 and the button sleeve 13 also have the protection function.

[0049] It should be noted that the valve push rod 36 is kept to reset to the left under the action of the second reset spring 37.

[0050] As an implementation form, the first valve core sealing ring 14 and the second valve core sealing ring 15 are arranged in the second communication cavity 32, the first valve core sealing ring 14 is sleeved on the first end of the valve push rod 36, and the second valve core sealing ring 15 is sleeved on the second end of the valve push rod 36. Obviously, the first valve core sealing ring 14 and the second valve core sealing ring 15 can perform circumferential dynamic sealing on the cooling compressed gas, and further improve the sealing effect.

[0051] As an implementation form, the valve core 33 is made of polytetrafluoroethylene. Obviously, the material of the valve core 33 is polytetrafluoroethylene, which has the lubricating effect under the sealing effect, and greatly improves the sliding fluency of the valve core 33.

[0052] As an implementation form, the first end cover 7 is arranged at the second end of the valve body 30, the second end cover 8 is arranged at the middle part of the valve body 30, the operating assembly is located between the first end cover 7 and the second end cover 8, the second sealing groove is arranged at the first end of the first end cover 7, the second sealing piece 70 is detachably arranged in the second sealing groove, the third sealing groove is arranged at the second end of the first end cover 7, the third sealing piece 71 is detachably arranged in the third sealing groove, and the first end cover 7 is sealingly connected with the valve body 30 through the second sealing piece 70 and the third sealing piece 71.

[0053] The above-mentioned vent type refrigeration pen works as follows: when the shell 20 is screwed with the shell body 1, a certain pressure is applied to the gas storage cylinder 5, so that the gas storage cylinder 5 is pierced by the piercing head of the piercing body 21, and the cooling compressed gas flows into the limiting sleeve 60 through the piercing body 21, and since the limiting sleeve 60 is communicated with the on-off assembly, the cooling compressed gas flows into the first communication cavity 31 through the limiting sleeve 60, so that the second sealing step 330 of the valve core 33 presses the first sealing step 300 of the valve body 30 to form a closed state; when the plastic push rod sleeve 12 is pressed down, the operating part 35 is pressed down, so as to drive the valve push rod 36 to move backward, and then drive the valve core 33 to move backward, and the cooling compressed gas enters the second communication cavity 32 through the gap between the valve core 33 and the valve body 30, enters the nozzle assembly 4 through the valve push rod 36 and the first end cover 7, and then is released through the nozzle opening 40 to reach the treatment part. The gas is evaporated and cooled, so that the treatment is realized.

[0054] The above examples only illustrate the basic principles and characteristics of the present application, and the present application is not limited by the above examples. Without departing from the spirit and scope of the present application, various changes and modifications can be made to the present application, and these changes and modifications all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An aerated frozen pencil, characterized in that, The vented freezing pen comprises a shell, a lance assembly, a control assembly, a nozzle assembly and a gas cylinder, wherein: The lance assembly comprises a generating shell and a lance body, the generating shell is provided with a receiving cavity for placing the gas cylinder, the generating shell is detachably mounted on the first end of the shell through a threaded structure, the gas cylinder contains cooling compressed gas for treatment, the lance body is mounted on the first end of the shell, the lance body is provided with a piercing head for piercing the gas cylinder, the lance body is provided with a first gas flow channel, and the generating shell is tightly screwed on the first end of the shell to cooperate with the piercing head on the lance body to pierce the gas cylinder, so that the cooling compressed gas in the gas cylinder flows into the first gas flow channel; The nozzle assembly comprises a nozzle port and a first filter unit, the nozzle port is detachably mounted on the second end of the shell, the first filter unit is arranged between the nozzle port and the shell, the nozzle port is provided with a second gas flow channel, the first gas flow channel and the second gas flow channel are communicated, the first filter unit is configured to filter and deliver the cooling compressed gas in the first gas flow channel to the second gas flow channel, and the nozzle port is configured to release the cooling compressed gas to the treatment site through the second gas flow channel. The control assembly is located in the middle of the shell, and the control assembly is configured to control the on-off of the first gas flow channel and the second gas flow channel.

2. The aerated frozen pencil according to claim 1, wherein, The first filter unit comprises a Teflon sealing ring and a first filter screen, the nozzle port has an extension end, the Teflon sealing ring is sleeved on the extension end, and the first filter screen is detachably mounted on the end face of the extension end of the nozzle port.

3. The aerated frozen pencil of claim 1, wherein, The first end of the shell is provided with a limiting assembly, and the limiting assembly is configured to limit the depth of the piercing head of the lance body inserted into the gas cylinder.

4. The aerated frozen pencil of claim 3, wherein, The limiting assembly comprises a limiting sleeve and a second filter unit, the limiting sleeve is adjustably mounted on the first end of the shell through a threaded structure, the first end of the limiting sleeve is connected with the lance body, the limiting sleeve is provided with the first gas flow channel, and the second filter unit comprises a first sealing member and a second filter screen, the second end of the limiting sleeve is provided with a first sealing groove, the first sealing member is located in the first sealing groove, and the second filter screen is detachably mounted on the second end of the limiting sleeve and located in the first gas flow channel.

5. The aerated frozen pencil of claim 3, wherein, The control assembly comprises a valve body, an operating assembly and an on-off assembly, wherein: The valve body is fixedly installed in the middle of the shell, the first end of the valve body abuts against the second end of the limiting assembly, a first communication cavity and a second communication cavity are formed in the valve body, the on-off assembly is movably arranged in the first communication cavity, the operating assembly is movably arranged in the second communication cavity, the first end of the first communication cavity is communicated with the first gas flow channel, the second end of the first communication cavity is communicated with the first end of the second communication cavity, the second end of the second communication cavity is communicated with the second gas flow channel, the on-off assembly can be switched to a first state and a second state. When the on-off assembly is in the first state, the on-off assembly disconnects the first communication cavity and the second communication cavity. When the on-off assembly is in the second state, the on-off assembly connects the first communication cavity and the second communication cavity. The operating assembly is configured to switch the on-off assembly from the first state to the second state.

6. The aerated frozen pencil of claim 5, wherein, The on-off assembly comprises a valve core and a first reset spring, the valve body is provided with a first sealing step, a second sealing step is formed on the valve core corresponding to the first sealing step, the valve core is movably arranged in the first communication cavity, the first end of the first reset spring is installed on the limiting assembly, the valve core is installed on the second end of the first reset spring, when the on-off assembly is in the first state, the first reset spring pushes the valve core away from the limiting assembly by elastic force, so that the second sealing step abuts against the first sealing step, thereby disconnecting the first communication cavity and the second communication cavity, the operating assembly pushes the valve core to move close to the limiting assembly by overcoming the elastic force of the first reset spring, thereby driving the second sealing step away from the first sealing step, and forming a gap between the first communication cavity and the first communication cavity for the cooling compressed gas to pass through.

7. The aerated frozen pencil according to claim 6, wherein, The operating assembly comprises an operating part, a valve push rod and a second reset spring, the valve push rod is movably arranged in the second communication cavity, the first end of the second reset spring abuts against the valve body, the valve push rod is installed on the second end of the second reset spring, the first end of the operating part is located outside the shell, the second end of the operating part is connected with the valve push rod, and the operating part is operated to push the valve push rod to move close to the limiting assembly by overcoming the elastic force of the second reset spring, thereby forming a gap between the first communication cavity and the first communication cavity for the cooling compressed gas to pass through.

8. The aerated frozen pencil of claim 7, wherein, First and second valve core sealing rings are arranged in the second communication cavity, the first valve core sealing ring is sleeved on the first end of the valve push rod, and the second valve core sealing ring is sleeved on the second end of the valve push rod.

9. The aerated frozen pencil of claim 6, wherein, The valve core is made of polytetrafluoroethylene.

10. The aerated frozen pencil of claim 5, wherein, The first end cover is provided with a second sealing groove at the first end, and a second sealing piece is detachably arranged in the second sealing groove; the first end cover is provided with a third sealing groove at the second end, and a third sealing piece is detachably arranged in the third sealing groove; and the first end cover is sealingly connected with the valve body through the second sealing piece and the third sealing piece.

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