CN219595512U - Fireproof device and ventilation treatment equipment - Google Patents

Fireproof device and ventilation treatment equipment Download PDF

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Publication number
CN219595512U
CN219595512U CN202223599609.4U CN202223599609U CN219595512U CN 219595512 U CN219595512 U CN 219595512U CN 202223599609 U CN202223599609 U CN 202223599609U CN 219595512 U CN219595512 U CN 219595512U
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China
Prior art keywords
valve body
piece
fluid channel
wall
elastic
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CN202223599609.4U
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Chinese (zh)
Inventor
刘振
周明钊
林立宝
王亚杰
庄志
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BMC Tianjin Medical Co Ltd
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BMC Tianjin Medical Co Ltd
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Priority to CN202223599609.4U priority Critical patent/CN219595512U/en
Priority to PCT/CN2023/105040 priority patent/WO2024002359A1/en
Application granted granted Critical
Publication of CN219595512U publication Critical patent/CN219595512U/en
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Abstract

The embodiment of the utility model discloses a fireproof device and ventilation treatment equipment, which relate to the technical field of medical equipment, wherein a supporting part is arranged on the inner wall of a fluid channel, a valve body is clamped with the supporting part so as to enable the valve body to be in a first position, a gap for fluid to pass through is arranged between the valve body and a through hole of an inner shell, and an elastic piece is in a compression state; after at least one of the supporting part and the valve body is melted, the elastic piece releases at least part of elastic potential energy, and the valve body is driven to be abutted with the periphery of the through hole, so that the fluid channel is in a blocking state. The trigger system consisting of the supporting part, the elastic piece and the valve body can enable the valve body to move to the second position in time and be abutted to the periphery of the through hole when any one of the valve body and the supporting part melts, so that the gas circuit is blocked, the trigger speed of the valve body is improved, the risk of fire spreading caused by untimely triggering is reduced, and the safety coefficient of the fireproof device is further improved.

Description

Fireproof device and ventilation treatment equipment
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a fireproof device and ventilation treatment equipment.
Background
Currently, oxygen therapy is widely used in clinical treatment and hospital rescue, and when oxygen inhaled by a patient cannot meet the requirement, external oxygen supply is generally required, and oxygen can be supplied to the patient through an invasive or non-invasive mode by using an external instrument. The apparatus for supplying oxygen to a patient is collectively referred to as an oxygen therapy apparatus.
Because of the combustion-supporting property of oxygen, a fireproof device is usually required to be arranged on the oxygen therapy instrument, and when oxygen leakage occurs and a fire disaster is caused, an oxygen passage is timely cut off through the fireproof device, so that the spread of fire is weakened, and the loss is reduced. In the prior art, a supporting piece with a lower melting point is usually arranged at the opening of the fireproof device, the supporting piece is used for supporting the sealing valve, and after the supporting piece is heated and melted, the sealing valve moves to the opening under the driving of the spring and is connected with the opening to block the air passage.
By adopting the fireproof device in the prior art, the sealing valve cannot timely move to the opening due to the slower melting speed of the supporting piece, the gas path cannot be blocked rapidly, and the fire is easy to spread.
Disclosure of Invention
The utility model provides a fireproof device and ventilation treatment equipment, and aims to solve the problems that in the prior art, a sealing valve cannot move to an opening in time due to low melting speed of a supporting piece, a gas path cannot be blocked rapidly, and fire spreading is easy to cause.
In a first aspect, an embodiment of the present utility model discloses a fire protection device comprising: the valve comprises a shell, an inner shell, a valve body and an elastic piece;
the shell is provided with a fluid channel which is used for communicating with a pipeline of an oxygen therapy instrument or a patient end;
The inner shell is arranged in the fluid channel and is in sealing connection with the inner wall of the fluid channel, and the inner shell is provided with a through hole for fluid to pass through;
the valve body is in sliding connection with the inner wall of the fluid channel and has a first position and a second position relative to the fluid channel;
when the valve body is in the first position, a gap for fluid to pass through is formed between the valve body and the through hole;
when the valve body is in the second position, the valve body is abutted with the periphery of the through hole so as to enable the fluid channel to be in a blocking state;
the elastic piece is arranged between the valve body and the inner wall of the fluid channel;
the inner walls at two ends of the fluid channel are respectively provided with at least one raised supporting part, one end of the valve body is opposite to the through hole, the other end of the valve body is clamped with the supporting parts so as to support the valve body to be in the first position, and the elastic piece is in a compressed state;
after at least one of the support and the valve body melts, the elastic member releases at least a portion of elastic potential energy to drive the valve body to switch from the first position to the second position.
Optionally, the support portion is disposed on an inner wall of the fluid channel near the opening.
Optionally, the valve body comprises a clamping piece and a sealing piece, the clamping piece and the sealing piece are of split type structures, and the clamping piece and the sealing piece are respectively connected with the inner wall of the fluid channel in a sliding manner;
the elastic piece is arranged between the clamping piece and the inner wall of the fluid channel;
one end of the clamping piece is used for being clamped with the supporting part, and the other end of the clamping piece is used for pushing against the sealing piece so as to enable the sealing piece to be in contact with the periphery side of the through hole;
an assembly gap for fluid to pass through is arranged between the clamping piece and the sealing piece.
Optionally, one end of the clamping piece, which is close to the sealing piece, is provided with a raised first guide part, and the first guide part is in sliding fit with the inner wall of the fluid channel;
the elastic piece is sleeved on the clamping piece, one end of the elastic piece is abutted against the inner wall of the fluid channel, and the other end of the elastic piece is abutted against the first guide part;
when the clamping piece is clamped with the supporting part, the elastic piece is compressed by the inner wall of the fluid channel and the first guiding part.
Optionally, the fluid channel includes a main body and opening portions disposed at two ends of the main body, wherein an inner diameter of the opening portion is smaller than an inner diameter of the main body;
The connection part of the main body and the opening part is narrowed to form a shoulder part;
the supporting part is arranged on the inner wall of the opening part;
one end of the elastic piece is abutted with the shoulder, and the other end of the elastic piece is abutted with the first guide part.
Optionally, the clamping piece is provided with a protruding second guiding part, and the second guiding part is in sliding fit with the inner wall of the opening part.
Optionally, a side of the sealing element facing the clamping element is provided with an end face, and a circumferential side of the end face extends towards the clamping element to form a third guide part, and the third guide part is in sliding fit with the inner wall of the fluid channel.
Optionally, the third guiding part and the end face enclose a limiting groove;
the clamping piece extends towards one end of the sealing piece to form a limiting part, and the limiting part is at least partially embedded in the limiting groove.
Optionally, the outer side wall of the seal extends to form a raised fourth guide portion that is in sliding engagement with the inner wall of the fluid channel.
Optionally, a groove is formed in one end, facing the sealing element, of the clamping element, a boss is formed in one end, facing the clamping element, of the sealing element, and the boss is at least partially embedded in the groove.
Optionally, a sealing structure is provided in the assembly gap of the housing and the inner housing.
Optionally, the number of the supporting parts is two or more, and the supporting parts are arranged at intervals along the circumferential direction of the inner wall of the opening part.
Optionally, a fusible part is arranged at one end of the valve body, which is close to the supporting part;
when the supporting part and the fusible part are in a non-fusion state, the valve body is clamped with the supporting part so as to support the valve body to be in the first position;
the elastic member releases at least part of elastic potential energy to drive the valve body in the second position in a state that the supporting portion and/or the fusible portion is in a molten state.
Optionally, the valve body comprises a first valve body and a second valve body;
the first valve body and the second valve body are symmetrically arranged on two sides of the through hole;
when at least one of the first valve body and the second valve body is abutted against the peripheral side of the through hole, the body passage is in a blocking state.
Optionally, an elastic support piece is arranged between the first valve body and the second valve body, and the elastic support piece is arranged through the through hole;
two ends of the elastic support piece are respectively abutted against the first valve body and the second valve body;
The elastic force of the elastic supporting piece is smaller than that of the elastic piece.
Optionally, a first mounting groove is formed in one end, facing the second valve body, of the first valve body, a second mounting groove is formed in one end, facing the first valve body, of the second valve body, and the first mounting groove is opposite to the second mounting groove;
the elastic supporting piece is at least partially embedded in the first mounting groove and the second mounting groove.
In a second aspect, an embodiment of the present utility model discloses a fire protection device comprising: a housing and a valve body;
the shell is provided with a fluid channel which is used for communicating with a pipeline of an oxygen therapy instrument or a patient end;
the valve body is arranged in the fluid channel, and the valve body has a first position and a second position relative to the fluid channel;
when in the first position, a gap for passing gas is arranged between the valve body and the fluid channel;
in the second position, the valve body blocks the fluid passage;
the inner walls of the two ends of the fluid channel are respectively provided with at least one raised fusible supporting part;
when the fusible support part is in a non-fused state, the valve body is clamped with the fusible support part so as to support the valve body to be in the first position;
The valve body is switched from the first position to the second position while the fusible support is in a molten state.
Optionally, the fire protection device further comprises: an elastic member;
the elastic piece is arranged between the valve body and the inner wall of the fluid channel;
when the valve body is in the first position, the elastic piece is in a compressed state;
the elastic member is used for providing elastic driving force when the valve body is switched from the first position to the second position.
Optionally, the valve body comprises a clamping piece and a sealing piece, the clamping piece and the sealing piece are of split type structures, and the clamping piece and the sealing piece are respectively connected with the inner wall of the fluid channel in a sliding manner;
the elastic piece is arranged between the clamping piece and the inner wall of the fluid channel;
one end of the clamping piece is used for being clamped with the fusible supporting part, and the other end of the clamping piece is used for pushing against the sealing piece;
an assembly gap for fluid to pass through is arranged between the clamping piece and the sealing piece.
Optionally, one end of the clamping piece, which is close to the sealing piece, is provided with a raised first guide part, and the first guide part is in sliding fit with the inner wall of the fluid channel;
The elastic piece is sleeved on the clamping piece, one end of the elastic piece is abutted against the inner wall of the fluid channel, and the other end of the elastic piece is abutted against the first guide part;
when the clamping piece is clamped with the fusible support part, the elastic piece is compressed by the inner wall of the fluid channel and the first guide part.
Optionally, the fluid channel includes a main body and opening portions disposed at two ends of the main body, wherein an inner diameter of the opening portion is smaller than an inner diameter of the main body;
the connection part of the main body and the opening part is narrowed to form a shoulder part;
the fusible support part is arranged on the inner wall of the opening part;
one end of the elastic piece is abutted with the shoulder, and the other end of the elastic piece is abutted with the first guide part.
Optionally, the clamping piece is provided with a protruding second guiding part, and the second guiding part is in sliding fit with the inner wall of the opening part.
Optionally, a side of the sealing element facing the clamping element is provided with an end face, and a circumferential side of the end face extends towards the clamping element to form a third guide part, and the third guide part is in sliding fit with the inner wall of the fluid channel.
Optionally, the third guiding part and the end face enclose a limiting groove;
The clamping piece extends towards one end of the sealing piece to form a limiting part, and the limiting part is at least partially embedded in the limiting groove.
Optionally, the outer side wall of the seal extends to form a raised fourth guide portion that is in sliding engagement with the inner wall of the fluid channel.
Optionally, a groove is formed in one end, facing the sealing element, of the clamping element, a boss is formed in one end, facing the clamping element, of the sealing element, and the boss is at least partially embedded in the groove.
In a third aspect, an embodiment of the present utility model discloses a fire protection device, comprising: a housing and a valve body;
the shell is provided with a fluid channel which is used for communicating with a pipeline of an oxygen therapy instrument or a patient end;
the valve body is arranged in the fluid channel, and the valve body has a first position and a second position relative to the fluid channel;
when in the first position, a gap for passing gas is arranged between the valve body and the fluid channel;
in the second position, the valve body blocks the fluid passage;
the inner walls at two ends of the fluid channel are respectively provided with at least one raised supporting part;
One end of the valve body, which is close to the supporting part, is provided with a fusible part;
when the fusible part is in a non-fusion state, the valve body is clamped with the supporting part so as to support the valve body to be in the first position;
the valve body is switched from the first position to the second position in a state where the fusible part is in a molten state.
Optionally, the fusible part has an outer diameter smaller than an outer diameter of other positions of the valve body.
Optionally, the fire protection device further comprises: an elastic member;
the elastic piece is arranged between the valve body and the inner wall of the fluid channel;
when the valve body is in the first position, the elastic piece is in a compressed state;
the elastic member is used for providing elastic driving force when the valve body is switched from the first position to the second position.
Optionally, the valve body comprises a clamping piece and a sealing piece, the clamping piece and the sealing piece are of split type structures, and the clamping piece and the sealing piece are respectively connected with the inner wall of the fluid channel in a sliding manner;
the fusible part is arranged at one end of the clamping piece, which is close to the supporting part, and the elastic piece is arranged between the clamping piece and the inner wall of the fluid channel;
One end of the clamping piece is used for being clamped with the supporting part, and the other end of the clamping piece is used for pushing against the sealing piece;
an assembly gap for fluid to pass through is arranged between the clamping piece and the sealing piece.
Optionally, one end of the clamping piece, which is close to the sealing piece, is provided with a raised first guide part, and the first guide part is in sliding fit with the inner wall of the fluid channel;
the elastic piece is sleeved on the clamping piece, one end of the elastic piece is abutted against the inner wall of the fluid channel, and the other end of the elastic piece is abutted against the first guide part;
when the clamping piece is clamped with the supporting part, the elastic piece is compressed by the inner wall of the fluid channel and the first guiding part.
Optionally, the fluid channel includes a main body and opening portions disposed at two ends of the main body, wherein an inner diameter of the opening portion is smaller than an inner diameter of the main body;
the connection part of the main body and the opening part is narrowed to form a shoulder part;
the supporting part is arranged on the inner wall of the opening part;
one end of the elastic piece is abutted with the shoulder, and the other end of the elastic piece is abutted with the first guide part.
Optionally, the clamping piece is provided with a protruding second guiding part, and the second guiding part is in sliding fit with the inner wall of the opening part.
Optionally, a side of the sealing element facing the clamping element is provided with an end face, and a circumferential side of the end face extends towards the clamping element to form a third guide part, and the third guide part is in sliding fit with the inner wall of the fluid channel.
Optionally, the third guiding part and the end face enclose a limiting groove;
the clamping piece extends towards one end of the sealing piece to form a limiting part, and the limiting part is at least partially embedded in the limiting groove.
Optionally, the outer side wall of the seal extends to form a raised fourth guide portion that is in sliding engagement with the inner wall of the fluid channel.
Optionally, a groove is formed in one end, facing the sealing element, of the clamping element, a boss is formed in one end, facing the clamping element, of the sealing element, and the boss is at least partially embedded in the groove.
In a fourth aspect, the embodiment of the utility model also discloses ventilation treatment equipment, which comprises the fireproof device.
In the embodiment of the utility model, the inner wall of the fluid channel is provided with the supporting part, the valve body is clamped with the fusible supporting part so that the valve body is positioned at the first position, a gap for fluid to pass through is arranged between the valve body and the through hole of the inner shell, and the elastic piece is positioned in a compression state; after at least one of the supporting part and the valve body is melted, the elastic piece releases at least part of elastic potential energy, and the valve body is driven to be abutted with the periphery of the through hole, so that the fluid channel is in a blocking state. The trigger system consisting of the supporting part, the elastic piece and the valve body can enable the valve body to move to the second position in time and be abutted to the periphery of the through hole when any one of the valve body and the supporting part melts, so that the gas circuit is blocked, the trigger speed of the valve body is improved, the risk of fire spreading caused by untimely triggering is reduced, and the safety coefficient of the fireproof device is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows one of the schematic structural views of the fire protection device according to the embodiment of the present utility model;
FIG. 2 shows a second schematic view of a fire protection device according to an embodiment of the present utility model;
FIG. 3 shows a third schematic view of a fire protection arrangement according to an embodiment of the utility model;
fig. 4 shows a fourth schematic structural view of a fire protection device according to an embodiment of the present utility model;
fig. 5 shows a fifth schematic structural view of the fire protection device according to the embodiment of the present utility model.
Description of the reference numerals
10-a housing; 101-a body; 102-an opening; 103-shoulder; 20-an inner shell; 201-a through hole; 30-valve body; 301-fusible parts; 302-a clamping piece; 3021—a first guide; 3022-a second guide; 3023-a stopper; 3024-grooves; 303-a seal; 3031-third guide; 3032-a limit groove; 3033-fourth guides; 3034-boss; 40-elastic member; 50-meltable support; 60-sealing structure; 70-elastic support; 80-a first mounting groove; 90-a second mounting groove; 100-supporting part.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In a first aspect, referring to fig. 1 to 2, an embodiment of the present utility model discloses a fire protection device, the fire protection device comprising: a housing 10, an inner housing 20, a valve body 30, and an elastic member 40; the housing 10 has a fluid passage for communicating with a conduit at the patient end or the oxygen therapy device; the inner shell 20 is arranged in the fluid channel and is in sealing connection with the inner wall of the fluid channel, and the inner shell 20 is provided with a through hole 201 for fluid to pass through; the valve body 30 is slidably connected to the inner wall of the fluid passage and has a first position and a second position relative to the fluid passage; when in the first position, a gap is provided between the valve body 30 and the through hole 201 for the fluid to pass through; when in the second position, the valve body 30 abuts against the peripheral side of the through hole 201 to put the fluid passage in a blocked state; the elastic member 40 is disposed between the valve body 30 and the inner wall of the fluid passage; the inner walls at two ends of the fluid channel are respectively provided with at least one raised supporting part 100, one end of the valve body 30 is opposite to the through hole 201, the other end of the valve body 30 is used for being clamped with the supporting part 100 so as to support the valve body 30 to be in a first position, and the elastic piece 40 is in a compressed state; after at least one of the support 100 and the valve body 30 melts, the elastic member 40 releases at least part of elastic potential energy to drive the valve body 30 to switch from the first position to the second position.
Specifically, as the main body 101 frame of the fire protection device, the case 10 may be made of a material which is not easily chemically reacted with oxygen and is resistant to high temperature, such as stainless steel or ceramic material; can also be made of fireproof and flame-retardant materials. The shell 10 is internally provided with a fluid channel, two ends of the fluid channel are provided with openings, the fluid channel is used for being communicated with a pipeline at the oxygen therapy instrument or the patient end, and as the oxygen needs to pass through the fluid channel in the process of oxygen transmission, the oxygen passage can be blocked by blocking the fluid channel, so that the fire spreading caused by oxygen clamping is avoided to the greatest extent.
The inner housing 20 is disposed within the fluid passage, and the inner housing 20 is preferably disposed at an intermediate position of the fluid passage. The outer wall of the inner shell 20 is in sealing connection with the inner wall of the fluid channel, the inner shell 20 and the shell 10 can be assembled in an adhesive mode, an ultrasonic welding mode and the like, and the inner shell 20 is further provided with a through hole 201, when oxygen is introduced into the fluid channel, the oxygen can only pass through the through hole 201 and cannot pass through an assembly gap between the inner shell 20 and the shell 10, and therefore, gas path blocking can be achieved only by closing the through hole 201 on the inner shell 20. In case of no fire, oxygen can be normally transmitted through the through-holes 201, and the shape of the through-holes 201 may be circular, elliptical, semicircular, etc.
The valve body 30 is slidably connected with the inner wall of the fluid channel, the valve body 30 has a first position and a second position relative to the fluid channel, when the valve body 30 is in the first position, a gap for the fluid to pass through is formed between the valve body 30 and the through hole 201 of the inner shell 20, and oxygen can normally pass through the through hole 201 for transmission; when the valve body 30 is in the second position, the valve body 30 abuts against the peripheral side of the through hole 201 to block the fluid passage, and the fluid passage can be blocked by the engagement of the valve body 30 and the through hole 201. One end of the valve body 30 for abutting against the circumferential side of the through hole 201 may be made of a flexible sealing material, such as silica gel, rubber, etc.; the valve body 30 may be made of a rigid material, and a flexible sealing ring is provided only at one end of the valve body 30 near the through hole 201, and when the valve body 30 abuts against the periphery of the through hole 201, the sealing ring is embedded in a gap between the valve body 30 and the periphery of the through hole 201 to realize sealing.
The elastic member 40 is disposed between the valve body 30 and the inner wall of the fluid channel, and is used for driving the valve body 30 to move from the first position to the second position. The elastic member 40 may be a metal spring such as iron, copper, or alloy, or may be soft rubber such as silica gel or rubber capable of storing elastic potential energy. The inner walls at two ends of the fluid channel are provided with at least one raised supporting part 100, and the supporting part 100 can be clamped with the other end of the valve body 30, so that the valve body 30 is positioned at the first position, the smoothness of the fluid channel under the condition that no fire occurs is ensured, and the supporting part 100 can be made of materials with lower melting points, such as PP, PVC and the like.
When the valve body 30 is at the first position, the elastic member 40 is pressed by the inner wall of the fluid channel and the valve body 30, and is in a compressed state to accumulate elastic potential energy; when the supporting part 100 loses the clamping action on the valve body 30, the stress balance is broken, the valve body 30 moves to the second position under the elastic action of the elastic piece 40, and abuts against the periphery of the through hole 201, so that the air path is blocked.
In the event of a fire, the valve body 30 may be triggered by: firstly, the supporting part 100 melts, the supporting part 100 loses the clamping effect on the valve body 30, and under the elastic force of the elastic piece 40, the valve body 30 moves to the second position to be abutted with the periphery of the through hole 201, so that the blocking of the fluid channel is realized; secondly, one end of the valve body 30, which is close to the supporting part 100, is melted, one end of the valve body 30, which is close to the supporting part 100, can be made of materials with a lower melting point, such as PP, PVC, and the like, and after the one end of the valve body 30, which is close to the supporting part 100, is melted, the supporting part 100 also loses the clamping effect on the valve body 30, and under the elastic force of the elastic member 40, the valve body 30 moves to a second position to abut against the circumference side of the through hole 201, so that the blocking of the fluid channel is realized; thirdly, the supporting portion 100 and one end of the valve body 30, which is close to the supporting portion 100, are melted simultaneously, the supporting portion 100 loses the clamping effect on the valve body 30, and the blocking of the fluid passage can be realized.
In the embodiment of the utility model, the triggering system composed of the supporting part 100, the elastic piece 40 and the valve body 30 can enable the valve body 30 to move to the second position in time and abut against the peripheral side of the through hole 201 when any one of the valve body 30 and the supporting part 100 is molten, so that the gas path is blocked, the triggering speed of the valve body 30 is improved, the risk of fire spreading caused by untimely triggering is reduced, and the safety coefficient of the fireproof device is further improved. And the fireproof device has a simple structure, is convenient to assemble, and reduces the production cost and the installation cost.
Alternatively, the support 100 is provided on the inner wall of the fluid channel near the opening.
Specifically, the support portion 100 and the inner wall of the fluid passage opening may be assembled by bonding or welding, or the support portion 100 and the housing may be integrally formed. The supporting portion 100 is disposed on the inner wall of the fluid channel near the opening, and since the fire disaster usually occurs outside the fire protection device, the opening of the fluid channel is first affected by the fire disaster, and the supporting portion 100 is disposed on the inner wall of the fluid channel near the opening, so that one end of the supporting portion 100 and one end of the valve body 30 near the supporting portion 100 are first in a high-temperature state to be fused, and the timeliness of triggering the valve body 30 is improved.
Alternatively, referring to fig. 3 to 4, the valve body 30 includes a clamping member 302 and a sealing member 303, the clamping member 302 and the sealing member 303 are of a split structure, and the clamping member 302 and the sealing member 303 are respectively slidably connected with an inner wall of the fluid passage; the clamping piece 302 is provided with a fusible part 301, and the elastic piece 40 is arranged between the clamping piece 302 and the inner wall of the fluid channel; one end of the clamping piece 302 is used for clamping with the supporting part 100, and the other end of the clamping piece 302 is used for pushing against the sealing piece 303 so as to enable the sealing piece 303 to be in contact with the periphery side of the through hole 201; the clamping member 302 and the sealing member 303 have an assembly gap therebetween for fluid to pass through.
Specifically, the valve body 30 includes the joint piece 302 and the sealing piece 303, and the joint piece 302 and the sealing piece 303 adopt split type structures, have the fit clearance, and oxygen can pass through the fit clearance, can reduce the air resistance that the valve body 30 brought, improves oxygen flux and travelling comfort. The clamping piece 302 and the sealing piece 303 are respectively connected with the inner wall of the fluid channel in a sliding manner, when one end of the clamping piece 302 is clamped with the supporting portion 100, positioning and fixing of the clamping piece 302 can be achieved, the clamping piece 302 is in a static state, and the clamping piece 302 can be matched with the supporting portion 100 in a clamping manner through structures such as a clamping hook and a clamping round head. The elastic element 40 is arranged between the clamping element 302 and the inner wall of the fluid channel, and the elastic element 40 accumulates elastic potential energy under the compression of the clamping element 302 and the inner wall of the fluid channel; the seal 303 is in clearance fit with the through hole 201 of the inner housing 20, and in use, oxygen is normally transported through the clearance between the seal 303 and the through hole 201 of the inner housing 20. The sealing member 303 may be made of a flexible sealing material, such as silica gel, rubber, etc.; the sealing member 303 may be made of a rigid material, and a flexible sealing ring is provided only on one side of the sealing member 303 close to the through hole 201, and when the sealing member 303 abuts against the peripheral side of the through hole 201, the sealing ring is embedded in a gap between the sealing member 303 and the peripheral side of the through hole 201 to realize sealing.
The fusible part 301 is arranged on the clamping piece 302, the fusible part 301 can be made of materials with a low melting point, such as PP, PVC and the like, and fusible can be realized through structural design, for example, the fusible part 301 adopts a structure with a small diameter or thickness, fusing is easy to occur, and after the fusible part 301 is fused, the clamping piece 302 can be broken by the fusible part 301. When any one of the fusible part 301 and the supporting part 100 melts, the supporting part 100 loses the clamping action on the clamping piece 302, so that at least part of elastic potential energy is released by the elastic piece 40, and under the action of the elastic force, the other end of the clamping piece 302 pushes against the sealing piece 303, so that the sealing piece 303 abuts against the periphery side of the through hole 201, and the blocking of the fluid channel is realized.
Alternatively, referring to fig. 3, the end of the clamping member 302 near the sealing member 303 is provided with a raised first guide part 3021, and the first guide part 3021 is in sliding fit with the inner wall of the fluid channel; the elastic piece 40 is sleeved on the clamping piece 302, one end of the elastic piece 40 is abutted against the inner wall of the fluid channel, and the other end of the elastic piece 40 is abutted against the first guide part 3021; when the engaging member 302 engages with the supporting portion 100, the elastic member 40 is compressed by the inner wall of the fluid passage and the first guide portion 3021; in the molten state of the support portion 100 and/or the fusible portion 301, the elastic member 40 releases at least part of elastic potential energy, and the driving seal member 303 abuts against the peripheral side of the through hole 201 to put the fluid passage in a blocked state.
Specifically, the end of the clamping member 302, which is close to the sealing member 303, is provided with a protruding first guiding portion 3021, the first guiding portion 3021 may be a sliding sheet, a boss or other structure, and the number of the first guiding portions 3021 may be selected according to actual requirements. The first guide portion 3021 may be made of the same material as the fastening member 302, and is made of a material having fireproof, flame-retardant and wear-resistant properties. The first guide portion 3021 and the fastening member 302 may be integrally formed, and have good structural strength and stability. The first guide 3021 may also be manufactured separately from the fastening member 302 and then assembled by bonding or welding. The first guide 3021 has two functions: first, a stable supporting point can be provided for the elastic member 40; secondly, the first guiding portion 3021 can be slidably matched with the inner wall of the fluid channel, so as to play a role in guiding and positioning, avoid the problem of jamming and deflection of the clamping piece 302 during movement, and improve the triggering stability of the valve body 30.
The elastic member 40 may be a metal spring, and the metal spring is sleeved on the clamping member 302. When the engaging member 302 engages with the fusible support, both ends of the elastic member 40 respectively abut against the first guide portion 3021 and the inner wall of the fluid passage, and are in a compressed state, thereby accumulating elastic potential energy. When the supporting portion 100 and/or the fusible portion 301 are in the molten state, the supporting portion 100 loses the clamping effect on the clamping member 302, the elastic member 40 releases at least part of elastic potential energy, and the driving seal member 303 abuts against the peripheral side of the through hole 201, so that the fluid channel is in a blocking state.
By providing the elastic member 40, when the supporting portion 100 and/or the fusible portion 301 are fused, the driving force is provided to the engaging member 302 and the sealing member 303, and the sealing member 303 is rapidly moved and brought into contact with the peripheral side of the through hole 201. Meanwhile, the elastic member 40 is sleeved on the clamping member 302, so that on one hand, the space inside the fluid channel is saved, and meanwhile, the stability of the assembly of the elastic member 40 is ensured.
Alternatively, referring to fig. 1 to 2, the fluid passage includes a main body 101 and opening portions 102 provided at both ends of the main body 101, wherein an inner diameter of the opening portions 102 is smaller than an inner diameter of the main body 101; the junction of the body 101 and the opening 102 narrows to form a shoulder 103; the support part 100 is provided on the inner wall of the opening 102; one end of the elastic member 40 abuts against the shoulder 103, and the other end of the elastic member 40 abuts against the first guide 3021.
Specifically, the fluid channel includes a main body 101 and opening portions 102 provided at both ends of the main body 101, the opening portions 102 are for communication with a pipe line at a patient end or an oxygen therapy apparatus end, for ease of assembly, the opening portions 102 have an inner diameter smaller than that of the main body 101, a structure having thick middle and thin ends is formed, the main body 101 transitions from the middle to both ends, and a shoulder 103 is formed by narrowing at a junction with the opening portions 102, the shoulder 103 being for supporting the elastic member 40.
The supporting part 100 is arranged on the inner wall of the opening part 102, the sealing element 303 is arranged inside the main body 101, the sealing element 303 is far away from the supporting part 100 and is not easily affected by high combustion temperature, the performance of the sealing element 303 is improved, and the stability of the fireproof device is improved.
Alternatively, referring to fig. 3, the clip 302 is provided with a convex second guide portion 3022, and the second guide portion 3022 is slidably fitted with the inner wall of the opening portion 102.
Specifically, the clamping piece 302 is provided with a protruding second guiding portion 3022, the second guiding portion 3022 can be in a structure of a sliding sheet, a boss and the like, the second guiding portion 3022 can be in sliding fit with the inner wall of the opening 102, the guiding and positioning effects are achieved, the problem that the clamping piece 302 is blocked and deflected during moving is avoided, and the triggering stability of the valve body 30 is improved.
Alternatively, referring to fig. 3, the sealing member 303 has an end face on a side facing the clamping member 302, and a circumferential side of the end face extends toward the clamping member 302 to form a third guide portion 3031, and the third guide portion 3031 is slidably engaged with an inner wall of the fluid passage.
Specifically, the side of the seal 303 facing the clip 302 has an end surface, and the clip 302 can push against the seal 303 by contacting the end surface of the seal 303. The circumference side of terminal surface extends towards joint spare 302 and forms third guide part 3031, and third guide part 3031 can with the inner wall sliding fit of fluid passage, plays the effect of guiding and positioning, avoids sealing member 303 to appear blocking, the skew problem when moving, has promoted the stability that valve body 30 triggered.
Optionally, referring to fig. 3, the third guide portion 3031 and the end face enclose a limiting groove 3032; the clamping member 302 extends towards one end of the sealing member 303 to form a limiting portion 3023, and the limiting portion 3023 is at least partially embedded in the limiting groove 3032.
Specifically, the third guide portion 3031 and the end face enclose a limiting groove 3032, the limiting groove 3032 is in a U shape, and the opening side of the limiting groove 3032 faces the clamping piece 302; the clamping member 302 extends toward one end of the sealing member 303 to form a limiting portion 3023, and the limiting portion 3023 may be a boss structure. When the clamping piece 302 pushes against the sealing piece 303, the limiting part 3023 is at least partially embedded in the limiting groove 3032, so that the problems of shaking and blocking during movement of the clamping piece 302 and the sealing piece 303 are avoided, and the triggering stability of the valve body 30 is improved.
Alternatively, referring to fig. 4, the outer sidewall of the seal 303 extends to form a raised fourth guide 3033, the fourth guide 3033 being a sliding fit with the inner wall of the fluid channel.
Specifically, as a modification, a protruding fourth guide portion 3033 may be further extended on the outer side wall of the seal 303, the fourth guide portion 3033 may have a structure such as a sliding vane, a boss, etc., and the fourth guide portion 3033 may be slidably matched with the inner wall of the fluid channel, so as to play a role in guiding and positioning, avoid the problem that the seal 303 is jammed and deflected during moving, and improve the triggering stability of the valve body 30.
Alternatively, referring to fig. 4, an end of the clamping member 302 facing the sealing member 303 is provided with a groove 3024, an end of the sealing member 303 facing the clamping member 302 is provided with a boss 3034, and the boss 3034 is at least partially embedded in the groove 3024.
Specifically, to ensure the stability of the assembly between the clip 302 and the seal 303, rattling is avoided. For deflection, a groove 3024 may be provided in the clip member 302, a boss 3034 may be provided in the seal member 303, and the groove 3024 may be provided opposite the boss 3034 and may be shaped to match.
Alternatively, as shown with reference to fig. 1 to 4, a sealing structure 60 is provided in the assembly gap of the housing 10 and the inner housing 20.
Specifically, there is an assembly gap between the housing 10 and the inner housing 20, in order to avoid oxygen passing through the assembly gap between the housing 10 and the inner housing 20 in the case where the through hole 201 of the inner housing 20 is closed, a sealing structure 60 is provided in the assembly gap between the housing 10 and the inner housing 20, the sealing structure 60 may be a silicone gasket, a rubber gasket, or the like, and the sealing structure 60 fills the assembly gap under the compression of the housing 10 and the inner housing 20 to realize the sealing connection between the housing 10 and the inner housing 20.
Alternatively, as shown with reference to fig. 1 to 4, the number of the supporting portions 100 is two or more, and the supporting portions 100 are arranged at intervals along the circumferential direction of the inner wall of the opening portion 102.
Specifically, the support portion 100 is configured to support the valve body 30 in the first position, and stability of the engagement between the support portion 100 and the valve body 30 directly affects performance of the fireproof device. In order to avoid failure of the clamping effect between the supporting portion 100 and the valve body 30, the problem of wrong blocking of the fluid channel occurs, the number of the supporting portions 100 is two or more, the supporting portions 100 are arranged at intervals along the circumferential direction of the inner wall of the opening 102, multiple clamping is achieved on the clamping portion of the valve body 30, and the stability of clamping is improved. Meanwhile, the problem that the valve body 30 deflects due to uneven stress can be avoided, and the triggering stability of the valve body 30 is improved.
Alternatively, referring to fig. 1 to 4, the valve body 30 includes a first valve body and a second valve body; the first valve body and the second valve body are symmetrically arranged at two sides of the through hole 201; when at least one of the first valve body and the second valve body abuts against the peripheral side of the through hole 201, the body passage is in a blocked state.
Specifically, the fire protection device includes two first valve bodies and second valve bodies symmetrically disposed in the fluid channel, and the first valve bodies and the second valve bodies have the same structure and are respectively located at two sides of the through hole 201. Elastic pieces 40 are arranged between the first valve body and the second valve body and the inner wall of the fluid channel; the opening portions 102 at both ends of the main body 101 are respectively provided with support portions 100 for respectively engaging with the first valve body and the second valve body.
The fire protection device adopts a double-valve body 30 structure, any valve body 30 is triggered, blocking of a fluid channel can be achieved, and timeliness of triggering of the fire protection device is guaranteed. When the device is installed, the port sequence of the fireproof device is not required to be distinguished, any opening end can be assembled and communicated with a pipeline of the oxygen therapy instrument or the patient end, and the convenience of installation is greatly improved.
Alternatively, referring to fig. 3 and 4, an elastic support member 70 is disposed between the first valve body and the second valve body, and the elastic support member 70 is disposed through the through hole 201; two ends of the elastic support member 70 are respectively abutted with the first valve body and the second valve body; wherein the elastic force of the elastic support member 70 is smaller than that of the elastic member 40.
Specifically, when the first valve body or the second valve body adopts a split structure, the split type structure comprises the clamping piece 302 and the sealing piece 303, and under the condition that the clamping piece 302 is not pushed, the sealing piece 303 and the through hole 201 of the inner shell 20 can relatively move, the sealing piece 303 can be unnecessarily contacted with the peripheral side of the through hole 201 of the inner shell 20, and the air passage is easy to be blocked, so that normal ventilation is affected. Therefore, the elastic support member 70 is disposed between the first valve body and the second valve body, and the elastic support member 70 may be a metal spring such as iron, copper, alloy, or a soft rubber such as silica gel or rubber capable of storing elastic potential energy. The elastic support member 70 is arranged in the through hole 201 in a penetrating manner, normal transmission of oxygen cannot be blocked, and two ends of the elastic support member 70 are respectively abutted against the first valve body and the second valve body, so that two sealing members 303 are supported, and the sealing members 303 are prevented from contacting with the periphery of the through hole 201 in a normal use state.
The elastic force of the elastic supporting member 70 is smaller than that of the elastic member 40, when the supporting portion 100 and/or the fusible portion 301 are in a molten state, the supporting portion 100 loses the clamping effect on the clamping member 302, the elastic member 40 releases at least part of elastic potential energy, the elastic supporting member 70 does not obstruct the movement of the sealing member 303, and the sealing member 303 can be smoothly abutted to the peripheral side of the through hole 201, so that the fluid passage is in a blocking state.
Alternatively, referring to fig. 4, a first mounting groove 80 is provided at an end of the first valve body facing the second valve body, a second mounting groove 90 is provided at an end of the second valve body facing the first valve body, and the first mounting groove 80 is disposed opposite to the second mounting groove 90; the elastic support member 70 is at least partially embedded in the first mounting groove 80 and the second mounting groove 90.
Specifically, by providing the first mounting groove 80 and the second mounting groove 90, the elastic support 70 can be stored, and the elastic support 70 can be prevented from shaking or deflecting due to the limiting function.
In a second aspect, referring to fig. 2 to 5, an embodiment of the present utility model discloses a fire protection device, including: a housing 10 and a valve body 30; the housing 10 has a fluid passage for communicating with a conduit at the patient end or the oxygen therapy device; the valve body 30 is disposed within the fluid passage, the valve body 30 having a first position and a second position relative to the fluid passage; in the first position, a gap is provided between the valve body 30 and the fluid passage through which gas passes; in the second position, the valve body 30 blocks the fluid passage; the inner walls of the two ends of the fluid channel are respectively provided with at least one raised fusible support part 50; in the non-molten state of the fusible support part 50, the valve body 30 is clamped with the fusible support part 50 to support the valve body 30 in the first position; in the molten state of the fusible support 50, the valve body 30 is switched from the first position to the second position.
Specifically, as the main body 101 frame of the fire protection device, the case 10 may be made of a material which is not easily chemically reacted with oxygen and is resistant to high temperature, such as stainless steel or ceramic material; can also be made of fireproof and flame-retardant materials. The shell 10 is internally provided with a fluid channel, two ends of the fluid channel are provided with openings, the fluid channel is used for being communicated with a pipeline at the oxygen therapy instrument or the patient end, and as the oxygen needs to pass through the fluid channel in the process of oxygen transmission, the oxygen passage can be blocked by blocking the fluid channel, so that the fire spreading caused by oxygen clamping is avoided to the greatest extent.
The valve body 30 is in sliding connection with the inner wall of the fluid channel, the valve body 30 has a first position and a second position relative to the fluid channel, when the valve body 30 is in the first position, a gap for passing gas is formed between the valve body 30 and the fluid channel, and oxygen can be normally transmitted through the fluid channel; when the valve body 30 is in the second position, the fluid channel is in a blocking state, and specifically, the valve body 30 and the inner wall or the opening of the fluid channel can be matched to block the fluid channel, for example, when the valve body 30 is in the second position, the valve body abuts against the shoulder of the fluid channel to block the fluid channel.
One end of the valve body 30 for sealing and blocking the fluid passage may be made of a flexible sealing material, such as silica gel, rubber, etc.; the valve body 30 may be made of a rigid material, and a flexible sealing ring is disposed only at one end of the valve body 30 for sealing and blocking the fluid passage.
The inner walls at two ends of the fluid channel are provided with at least one raised fusible support part 50, and the fusible support part 50 can be clamped with the other end of the valve body 30, so that the valve body 30 is positioned at the first position, the unobstructed fluid channel is ensured under the condition of no fire, and the fusible support part 50 can be made of materials with lower melting points, such as PP, PVC and the like, and is easy to fuse when being subjected to high temperature.
In the event of a fire, the fusible support 50 melts and the fusible support 50 loses the engagement with the valve body 30, and the valve body 30 moves to the second position to block the fluid passage.
In the embodiment of the utility model, the fusible support part 50 is adopted, when the fusible support part 50 is fused, the valve body 30 can be moved to the second position in time and the gas path is blocked, and as the fusible support part 50 is made of fusible materials, the response speed is higher, the triggering speed of the valve body 30 is improved, the risk of fire spreading caused by untimely triggering is reduced, and the safety coefficient of the fireproof device is further improved. And the fireproof device has a simple structure, is convenient to assemble, and reduces the production cost and the installation cost.
Optionally, the fire protection device further comprises: an elastic member 40; the elastic member 40 is disposed between the valve body 30 and the inner wall of the fluid passage; when the valve body 30 is in the first position, the elastic member 40 is in a compressed state; the elastic member 40 is used for providing elastic driving force when the valve body 30 is switched from the first position to the second position.
Specifically, the elastic member 40 is disposed between the valve body 30 and the inner wall of the fluid passage, for driving the valve body 30 to move from the first position to the second position. The elastic member 40 may be a metal spring such as iron, copper, or alloy, or may be soft rubber such as silica gel or rubber capable of storing elastic potential energy.
When the valve body 30 is at the first position, the elastic member 40 is pressed by the inner wall of the fluid channel and the valve body 30, and is in a compressed state to accumulate elastic potential energy; when the supporting part loses the clamping action on the valve body 30, the stress balance is broken, and the valve body 30 moves to the second position under the elastic action of the elastic piece 40, so that the gas path is blocked. The triggering speed of the valve body 30 is further improved by the elastic member 40.
Alternatively, referring to fig. 3 to 5, the valve body 30 includes a clamping member 302 and a sealing member 303, the clamping member 302 and the sealing member 303 are of a split structure, and the clamping member 302 and the sealing member 303 are respectively slidably connected with an inner wall of the fluid passage; the elastic piece 40 is arranged between the clamping piece 302 and the inner wall of the fluid channel; one end of the clamping piece 302 is used for clamping with the fusible support part 50, and the other end of the clamping piece 302 is used for pushing against the sealing piece 303; the clamping member 302 and the sealing member 303 have an assembly gap therebetween for fluid to pass through.
Specifically, the valve body 30 includes the joint piece 302 and the sealing piece 303, and the joint piece 302 and the sealing piece 303 adopt split type structures, have the fit clearance, and oxygen can pass through the fit clearance, can reduce the air resistance that the valve body 30 brought, improves oxygen flux and travelling comfort. The clamping piece 302 and the sealing piece 303 are respectively connected with the inner wall of the fluid channel in a sliding manner, when one end of the clamping piece 302 is clamped with the fusible support part 50, positioning and fixing of the clamping piece 302 can be achieved, the clamping piece 302 is in a static state, and the clamping piece 302 can be matched with the fusible support part 50 in a clamping manner through structures such as a clamping hook, a clamping round head and the like. The elastic member 40 is disposed between the clamping member 302 and the inner wall of the fluid channel, and the elastic member 40 accumulates elastic potential energy under the compression of the clamping member 302 and the inner wall of the fluid channel. The sealing member 303 may be made of a flexible sealing material, such as silica gel, rubber, etc.; the seal 303 may also be made of a rigid material, with a flexible sealing ring provided on only one side of the seal 303.
Alternatively, referring to fig. 3, the end of the clamping member 302 near the sealing member 303 is provided with a raised first guide part 3021, and the first guide part 3021 is in sliding fit with the inner wall of the fluid channel; the elastic piece 40 is sleeved on the clamping piece 302, one end of the elastic piece 40 is abutted against the inner wall of the fluid channel, and the other end of the elastic piece 40 is abutted against the first guide part 3021; when the engaging member 302 engages with the fusible support portion 50, the elastic member 40 is compressed by the inner wall of the fluid passage and the first guide portion 3021.
Specifically, the end of the clamping member 302, which is close to the sealing member 303, is provided with a protruding first guiding portion 3021, the first guiding portion 3021 may be a sliding sheet, a boss or other structure, and the number of the first guiding portions 3021 may be selected according to actual requirements. The first guide portion 3021 may be made of the same material as the fastening member 302, and is made of a material having fireproof, flame-retardant and wear-resistant properties. The first guide portion 3021 and the fastening member 302 may be integrally formed, and have good structural strength and stability. The first guide 3021 may also be manufactured separately from the fastening member 302 and then assembled by bonding or welding. The first guide 3021 has two functions: first, a stable supporting point can be provided for the elastic member 40; secondly, the first guiding portion 3021 can be slidably matched with the inner wall of the fluid channel, so as to play a role in guiding and positioning, avoid the problem of jamming and deflection of the clamping piece 302 during movement, and improve the triggering stability of the valve body 30.
The elastic member 40 may be a metal spring, and the metal spring is sleeved on the clamping member 302. When the engaging member 302 engages with the fusible support, both ends of the elastic member 40 respectively abut against the first guide portion 3021 and the inner wall of the fluid passage, and are in a compressed state, thereby accumulating elastic potential energy. When the fusible support 50 is in the molten state, the fusible support 50 loses the clamping action on the clamping piece 302, and the elastic piece 40 releases at least part of elastic potential energy to drive the valve body 30 to be in the second position so as to enable the fluid channel to be in a blocking state.
By providing the elastic member 40, when the fusible support 50 is fused, a driving force can be provided to the engaging member 302 and the sealing member 303, so that the sealing member 303 can be rapidly moved to block the air passage. Meanwhile, the elastic member 40 is sleeved on the clamping member 302, so that on one hand, the space inside the fluid channel is saved, and meanwhile, the stability of the assembly of the elastic member 40 is ensured.
Alternatively, referring to fig. 2 to 5, the fluid passage includes a main body 101 and opening portions 102 provided at both ends of the main body 101, wherein an inner diameter of the opening portions 102 is smaller than an inner diameter of the main body 101; the junction of the body 101 and the opening 102 narrows to form a shoulder 103; the meltable support 50 is provided on the inner wall of the opening 102; one end of the elastic member 40 abuts against the shoulder 103, and the other end of the elastic member 40 abuts against the first guide 3021.
Specifically, the fluid channel includes a main body 101 and opening portions 102 provided at both ends of the main body 101, the opening portions 102 are for communication with a pipe line at a patient end or an oxygen therapy apparatus end, for ease of assembly, the opening portions 102 have an inner diameter smaller than that of the main body 101, a structure having thick middle and thin ends is formed, the main body 101 transitions from the middle to both ends, and a shoulder 103 is formed by narrowing at a junction with the opening portions 102, the shoulder 103 being for supporting the elastic member 40.
The fusible support part 50 is arranged on the inner wall of the opening part 102, the sealing element 303 is arranged inside the main body 101, the sealing element 303 is far away from the fusible support part 50 and is not easily affected by high combustion temperature, so that the performance of the sealing element 303 is improved, and the stability of the fireproof device is improved.
Alternatively, referring to fig. 3, the clip 302 is provided with a convex second guide portion 3022, and the second guide portion 3022 is slidably fitted with the inner wall of the opening portion 102.
Specifically, the clamping piece 302 is provided with a protruding second guiding portion 3022, the second guiding portion 3022 can be in a structure of a sliding sheet, a boss and the like, the second guiding portion 3022 can be in sliding fit with the inner wall of the opening 102, the guiding and positioning effects are achieved, the problem that the clamping piece 302 is blocked and deflected during moving is avoided, and the triggering stability of the valve body 30 is improved.
Alternatively, referring to fig. 3, the sealing member 303 has an end face on a side facing the clamping member 302, and a circumferential side of the end face extends toward the clamping member 302 to form a third guide portion 3031, and the third guide portion 3031 is slidably engaged with an inner wall of the fluid passage.
Specifically, the side of the seal 303 facing the clip 302 has an end surface, and the clip 302 can push against the seal 303 by contacting the end surface of the seal 303. The circumference side of terminal surface extends towards joint spare 302 and forms third guide part 3031, and third guide part 3031 can with the inner wall sliding fit of fluid passage, plays the effect of guiding and positioning, avoids sealing member 303 to appear blocking, the skew problem when moving, has promoted the stability that valve body 30 triggered.
Optionally, referring to fig. 3, the third guide portion 3031 and the end face enclose a limiting groove 3032; the clamping member 302 extends towards one end of the sealing member 303 to form a limiting portion 3023, and the limiting portion 3023 is at least partially embedded in the limiting groove 3032.
Specifically, the third guide portion 3031 and the end face enclose a limiting groove 3032, the limiting groove 3032 is in a U shape, and the opening side of the limiting groove 3032 faces the clamping piece 302; the clamping member 302 extends toward one end of the sealing member 303 to form a limiting portion 3023, and the limiting portion 3023 may be a boss structure. When the clamping piece 302 pushes against the sealing piece 303, the limiting part 3023 is at least partially embedded in the limiting groove 3032, so that the problems of shaking and blocking during movement of the clamping piece 302 and the sealing piece 303 are avoided, and the triggering stability of the valve body 30 is improved.
Alternatively, referring to fig. 4, the outer sidewall of the seal 303 extends to form a raised fourth guide 3033, the fourth guide 3033 being a sliding fit with the inner wall of the fluid channel.
Specifically, as a modification, a protruding fourth guide portion 3033 may be further extended on the outer side wall of the seal 303, the fourth guide portion 3033 may have a structure such as a sliding vane, a boss, etc., and the fourth guide portion 3033 may be slidably matched with the inner wall of the fluid channel, so as to play a role in guiding and positioning, avoid the problem that the seal 303 is jammed and deflected during moving, and improve the triggering stability of the valve body 30.
Alternatively, referring to fig. 4, an end of the clamping member 302 facing the sealing member 303 is provided with a groove 3024, an end of the sealing member 303 facing the clamping member 302 is provided with a boss 3034, and the boss 3034 is at least partially embedded in the groove 3024.
Specifically, to ensure the stability of the assembly between the clip 302 and the seal 303, rattling is avoided. For deflection, a groove 3024 may be provided in the clip member 302, a boss 3034 may be provided in the seal member 303, and the groove 3024 may be provided opposite the boss 3034 and may be shaped to match.
In a third aspect, referring to fig. 1 to 2, an embodiment of the present utility model discloses a fire protection device, including: a housing 10 and a valve body 30; the housing 10 has a fluid passage for communicating with a conduit at the patient end or the oxygen therapy device; the valve body 30 is disposed within the fluid passage, the valve body 30 having a first position and a second position relative to the fluid passage; in the first position, a gap is provided between the valve body 30 and the fluid passage through which gas passes; in the second position, the valve body 30 blocks the fluid passage; the inner walls of the two ends of the fluid channel are respectively provided with at least one raised supporting part 100; the valve body 30 is provided with a fusible part 301 at one end near the supporting part 100; in the non-molten state of the fusible part 301, the valve body 30 is clamped with the supporting part 100 to support the valve body 30 in the first position; when the fusible part 301 is in a molten state, the valve body 30 is switched from the first position to the second position.
Specifically, as the main body 101 frame of the fire protection device, the case 10 may be made of a material which is not easily chemically reacted with oxygen and is resistant to high temperature, such as stainless steel or ceramic material; can also be made of fireproof and flame-retardant materials. The shell 10 is internally provided with a fluid channel, two ends of the fluid channel are provided with openings, the fluid channel is used for being communicated with a pipeline at the oxygen therapy instrument or the patient end, and as the oxygen needs to pass through the fluid channel in the process of oxygen transmission, the oxygen passage can be blocked by blocking the fluid channel, so that the fire spreading caused by oxygen clamping is avoided to the greatest extent.
The valve body 30 is in sliding connection with the inner wall of the fluid channel, the valve body 30 has a first position and a second position relative to the fluid channel, when the valve body 30 is in the first position, a gap for passing gas is formed between the valve body 30 and the fluid channel, and oxygen can be normally transmitted through the fluid channel; when the valve body 30 is in the second position, the fluid channel is in a blocking state, and specifically, the valve body 30 and the inner wall or the opening of the fluid channel can be matched to block the fluid channel, for example, when the valve body 30 is in the second position, the valve body abuts against the shoulder of the fluid channel to block the fluid channel.
One end of the valve body 30 for sealing and blocking the fluid passage may be made of a flexible sealing material, such as silica gel, rubber, etc.; the valve body 30 may be made of a rigid material, and a flexible sealing ring is disposed only at one end of the valve body 30 for sealing and blocking the fluid passage. The inner walls at two ends of the fluid channel are provided with at least one raised supporting part 100, and the supporting part 100 can be clamped with the other end of the valve body 30, so that the valve body 30 is positioned at the first position, the unobstructed fluid channel is ensured under the condition that no fire disaster occurs, and the supporting part 100 can be made of materials with lower melting points, such as PP, PVC and the like.
The valve body 30 is provided with the fusible part 301 near one end of the supporting part 100, the fusible part 301 can be made of materials with lower melting points, such as PP, PVC and the like, and fusible can be realized through structural design, for example, the fusible part 301 adopts a structure with smaller diameter or thickness, fusing is easy to occur, after the fusible part 301 is fused, the supporting part 100 also loses the clamping effect on the valve body 30, and the valve body 30 moves to the second position to realize blocking of a fluid channel.
In the embodiment of the utility model, by arranging the fusible part 301, when the fusible part 301 melts, the clamping effect between the supporting part 100 and the valve body 30 fails, so that the valve body 30 can be moved to the second position in time and the gas path is blocked, and the fusible part 301 is made of fusible materials, so that the response speed is higher, the triggering speed of the valve body 30 is improved, the risk of fire spreading caused by untimely triggering is reduced, and the safety coefficient of the fireproof device is further improved. And the fireproof device has a simple structure, is convenient to assemble, and reduces the production cost and the installation cost.
Alternatively, the fusible part 301 has an outer diameter smaller than that of the other positions of the valve body.
Specifically, the fusible part 301 may be fused preferentially over other positions of the valve body 30 by structural design. The valve body 30 is cylindrical, when the valve body 30 is manufactured, the outer diameter of the fusible part 301 is smaller than the outer diameters of other positions of the valve body 30, and when the valve body 30 is subjected to high Wen Qinxi, the fusible part 301 is smaller in outer diameter and is fused preferentially, so that the clamping action between the supporting part 100 and the valve body 30 is disabled, and the triggering speed of the valve body 30 is greatly improved.
Optionally, the fire protection device further comprises: an elastic member; the elastic piece is arranged between the valve body and the inner wall of the fluid channel; when the valve body is at the first position, the elastic piece is in a compressed state; the elastic member is used for providing elastic driving force when the valve body is switched from the first position to the second position.
Specifically, the elastic member 40 is disposed between the valve body 30 and the inner wall of the fluid passage, for driving the valve body 30 to move from the first position to the second position. The elastic member 40 may be a metal spring such as iron, copper, or alloy, or may be soft rubber such as silica gel or rubber capable of storing elastic potential energy.
When the valve body 30 is at the first position, the elastic member 40 is pressed by the inner wall of the fluid channel and the valve body 30, and is in a compressed state to accumulate elastic potential energy; when the fusible part 301 melts and the supporting part loses the clamping action on the valve body 30, the stress balance is broken, and the valve body 30 moves to the second position under the elastic action of the elastic piece 40, so that the air path is blocked. The triggering speed of the valve body 30 is further improved by the elastic member 40.
Alternatively, referring to fig. 3 to 4, the valve body 30 includes a clamping member 302 and a sealing member 303, the clamping member 302 and the sealing member 303 are of a split structure, and the clamping member 302 and the sealing member 303 are respectively slidably connected with an inner wall of the fluid passage; the fusible part 301 is disposed at one end of the clamping piece 302 near the supporting part 100, and the elastic piece 40 is disposed between the clamping piece 302 and the inner wall of the fluid channel; one end of the clamping piece 302 is used for clamping with the supporting part 100, and the other end of the clamping piece 302 is used for pushing against the sealing piece 303; the clamping member 302 and the sealing member 303 have an assembly gap therebetween for fluid to pass through.
Specifically, the valve body 30 includes the joint piece 302 and the sealing piece 303, and the joint piece 302 and the sealing piece 303 adopt split type structures, have the fit clearance, and oxygen can pass through the fit clearance, can reduce the air resistance that the valve body 30 brought, improves oxygen flux and travelling comfort. The clamping piece 302 and the sealing piece 303 are respectively connected with the inner wall of the fluid channel in a sliding manner, when one end of the clamping piece 302 is clamped with the supporting portion 100, positioning and fixing of the clamping piece 302 can be achieved, the clamping piece 302 is in a static state, and the clamping piece 302 can be matched with the supporting portion 100 in a clamping manner through structures such as a clamping hook and a clamping round head. The elastic element 40 is arranged between the clamping element 302 and the inner wall of the fluid channel, and the elastic element 40 accumulates elastic potential energy under the compression of the clamping element 302 and the inner wall of the fluid channel; the seal 303 is in clearance fit with the through hole 201 of the inner housing 20, and in use, oxygen is normally transported through the clearance between the seal 303 and the through hole 201 of the inner housing 20. The sealing member 303 may be made of a flexible sealing material, such as silica gel, rubber, etc.; the sealing member 303 may be made of a rigid material, and a flexible sealing ring is provided only on one side of the sealing member 303 close to the through hole 201, and when the sealing member 303 abuts against the peripheral side of the through hole 201, the sealing ring is embedded in a gap between the sealing member 303 and the peripheral side of the through hole 201 to realize sealing.
The fusible part 301 is arranged on the clamping piece 302, the fusible part 301 can be made of materials with a low melting point, such as PP, PVC and the like, and fusible can be realized through structural design, for example, the fusible part 301 adopts a structure with a small diameter or thickness, fusing is easy to occur, and after the fusible part 301 is fused, the clamping piece 302 can be broken by the fusible part 301. When any one of the fusible part 301 and the supporting part 100 melts, the supporting part 100 loses the clamping action on the clamping piece 302, so that at least part of elastic potential energy is released by the elastic piece 40, and under the action of the elastic force, the other end of the clamping piece 302 pushes against the sealing piece 303, so that the sealing piece 303 abuts against the periphery side of the through hole 201, and the blocking of the fluid channel is realized.
Alternatively, referring to fig. 3, the end of the clamping member 302 near the sealing member 303 is provided with a raised first guide part 3021, and the first guide part 3021 is in sliding fit with the inner wall of the fluid channel; the elastic piece 40 is sleeved on the clamping piece 302, one end of the elastic piece 40 is abutted against the inner wall of the fluid channel, and the other end of the elastic piece 40 is abutted against the first guide part 3021; when the engaging member 302 engages with the supporting portion 100, the elastic member 40 is compressed by the inner wall of the fluid passage and the first guide portion 3021; in the molten state of the support portion 100 and/or the fusible portion 301, the elastic member 40 releases at least part of elastic potential energy, and the driving seal member 303 abuts against the peripheral side of the through hole 201 to put the fluid passage in a blocked state.
Specifically, the end of the clamping member 302, which is close to the sealing member 303, is provided with a protruding first guiding portion 3021, the first guiding portion 3021 may be a sliding sheet, a boss or other structure, and the number of the first guiding portions 3021 may be selected according to actual requirements. The first guide portion 3021 may be made of the same material as the fastening member 302, and is made of a material having fireproof, flame-retardant and wear-resistant properties. The first guide portion 3021 and the fastening member 302 may be integrally formed, and have good structural strength and stability. The first guide 3021 may also be manufactured separately from the fastening member 302 and then assembled by bonding or welding. The first guide 3021 has two functions: first, a stable supporting point can be provided for the elastic member 40; secondly, the first guiding portion 3021 can be slidably matched with the inner wall of the fluid channel, so as to play a role in guiding and positioning, avoid the problem of jamming and deflection of the clamping piece 302 during movement, and improve the triggering stability of the valve body 30.
The elastic member 40 may be a metal spring, and the metal spring is sleeved on the clamping member 302. When the engaging member 302 engages with the fusible support, both ends of the elastic member 40 respectively abut against the first guide portion 3021 and the inner wall of the fluid passage, and are in a compressed state, thereby accumulating elastic potential energy. When the supporting portion 100 and/or the fusible portion 301 are in the molten state, the supporting portion 100 loses the clamping effect on the clamping member 302, the elastic member 40 releases at least part of elastic potential energy, and the driving seal member 303 abuts against the peripheral side of the through hole 201, so that the fluid channel is in a blocking state.
By providing the elastic member 40, when the supporting portion 100 and/or the fusible portion 301 are fused, the driving force is provided to the engaging member 302 and the sealing member 303, and the sealing member 303 is rapidly moved and brought into contact with the peripheral side of the through hole 201. Meanwhile, the elastic member 40 is sleeved on the clamping member 302, so that on one hand, the space inside the fluid channel is saved, and meanwhile, the stability of the assembly of the elastic member 40 is ensured.
Alternatively, referring to fig. 1 to 2, the fluid passage includes a main body 101 and opening portions 102 provided at both ends of the main body 101, wherein an inner diameter of the opening portions 102 is smaller than an inner diameter of the main body 101; the junction of the body 101 and the opening 102 narrows to form a shoulder 103; the support part 100 is provided on the inner wall of the opening 102; one end of the elastic member 40 abuts against the shoulder 103, and the other end of the elastic member 40 abuts against the first guide 3021.
Specifically, the fluid channel includes a main body 101 and opening portions 102 provided at both ends of the main body 101, the opening portions 102 are for communication with a pipe line at a patient end or an oxygen therapy apparatus end, for ease of assembly, the opening portions 102 have an inner diameter smaller than that of the main body 101, a structure having thick middle and thin ends is formed, the main body 101 transitions from the middle to both ends, and a shoulder 103 is formed by narrowing at a junction with the opening portions 102, the shoulder 103 being for supporting the elastic member 40.
The supporting part 100 is arranged on the inner wall of the opening part 102, the sealing element 303 is arranged inside the main body 101, the sealing element 303 is far away from the supporting part 100 and is not easily affected by high combustion temperature, the performance of the sealing element 303 is improved, and the stability of the fireproof device is improved.
Alternatively, referring to fig. 3, the clip 302 is provided with a convex second guide portion 3022, and the second guide portion 3022 is slidably fitted with the inner wall of the opening portion 102.
Specifically, the clamping piece 302 is provided with a protruding second guiding portion 3022, the second guiding portion 3022 can be in a structure of a sliding sheet, a boss and the like, the second guiding portion 3022 can be in sliding fit with the inner wall of the opening 102, the guiding and positioning effects are achieved, the problem that the clamping piece 302 is blocked and deflected during moving is avoided, and the triggering stability of the valve body 30 is improved.
Alternatively, referring to fig. 3, the sealing member 303 has an end face on a side facing the clamping member 302, and a circumferential side of the end face extends toward the clamping member 302 to form a third guide portion 3031, and the third guide portion 3031 is slidably engaged with an inner wall of the fluid passage.
Specifically, the side of the seal 303 facing the clip 302 has an end surface, and the clip 302 can push against the seal 303 by contacting the end surface of the seal 303. The circumference side of terminal surface extends towards joint spare 302 and forms third guide part 3031, and third guide part 3031 can with the inner wall sliding fit of fluid passage, plays the effect of guiding and positioning, avoids sealing member 303 to appear blocking, the skew problem when moving, has promoted the stability that valve body 30 triggered.
Optionally, referring to fig. 3, the third guide portion 3031 and the end face enclose a limiting groove 3032; the clamping member 302 extends towards one end of the sealing member 303 to form a limiting portion 3023, and the limiting portion 3023 is at least partially embedded in the limiting groove 3032.
Specifically, the third guide portion 3031 and the end face enclose a limiting groove 3032, the limiting groove 3032 is in a U shape, and the opening side of the limiting groove 3032 faces the clamping piece 302; the clamping member 302 extends toward one end of the sealing member 303 to form a limiting portion 3023, and the limiting portion 3023 may be a boss structure. When the clamping piece 302 pushes against the sealing piece 303, the limiting part 3023 is at least partially embedded in the limiting groove 3032, so that the problems of shaking and blocking during movement of the clamping piece 302 and the sealing piece 303 are avoided, and the triggering stability of the valve body 30 is improved.
Alternatively, referring to fig. 4, the outer sidewall of the seal 303 extends to form a raised fourth guide 3033, the fourth guide 3033 being a sliding fit with the inner wall of the fluid channel.
Specifically, as a modification, a protruding fourth guide portion 3033 may be further extended on the outer side wall of the seal 303, the fourth guide portion 3033 may have a structure such as a sliding vane, a boss, etc., and the fourth guide portion 3033 may be slidably matched with the inner wall of the fluid channel, so as to play a role in guiding and positioning, avoid the problem that the seal 303 is jammed and deflected during moving, and improve the triggering stability of the valve body 30.
Alternatively, referring to fig. 4, an end of the clamping member 302 facing the sealing member 303 is provided with a groove 3024, an end of the sealing member 303 facing the clamping member 302 is provided with a boss 3034, and the boss 3034 is at least partially embedded in the groove 3024.
Specifically, to ensure the stability of the assembly between the clip 302 and the seal 303, rattling is avoided. For deflection, a groove 3024 may be provided in the clip member 302, a boss 3034 may be provided in the seal member 303, and the groove 3024 may be provided opposite the boss 3034 and may be shaped to match.
The embodiment of the utility model also discloses ventilation treatment equipment which comprises the fireproof device.
Specifically, the ventilation therapy apparatus includes a control device, an oxygen therapy apparatus, and a gas pipeline, where the control device is used to control oxygen supply and operation time of the oxygen therapy apparatus, and the control device may be an electronic device or a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. The electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device, a robot, a wearable device, or the like, which is not particularly limited in the embodiment of the present utility model.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The present utility model has been described above with reference to the embodiments of the present utility model, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the appended claims, which are to be included in the protection of the present utility model

Claims (38)

1. A fire protection apparatus, comprising: the valve comprises a shell, an inner shell, a valve body and an elastic piece;
The shell is provided with a fluid channel which is used for communicating with a pipeline of an oxygen therapy instrument or a patient end;
the inner shell is arranged in the fluid channel and is in sealing connection with the inner wall of the fluid channel, and the inner shell is provided with a through hole for fluid to pass through;
the valve body is in sliding connection with the inner wall of the fluid channel and has a first position and a second position relative to the fluid channel;
when the valve body is in the first position, a gap for fluid to pass through is formed between the valve body and the through hole;
when the valve body is in the second position, the valve body is abutted with the periphery of the through hole so as to enable the fluid channel to be in a blocking state;
the elastic piece is arranged between the valve body and the inner wall of the fluid channel;
the inner walls at two ends of the fluid channel are respectively provided with at least one raised supporting part, one end of the valve body is opposite to the through hole, the other end of the valve body is clamped with the supporting parts so as to support the valve body to be in the first position, and the elastic piece is in a compressed state;
after at least one of the support and the valve body melts, the elastic member releases at least a portion of elastic potential energy to drive the valve body to switch from the first position to the second position.
2. The fire protection device of claim 1, wherein the support is disposed on an inner wall of the fluid passage proximate the opening.
3. The fire protection device of claim 1, wherein the valve body comprises a clamping piece and a sealing piece, the clamping piece and the sealing piece are of split type structures, and the clamping piece and the sealing piece are respectively connected with the inner wall of the fluid channel in a sliding manner;
the elastic piece is arranged between the clamping piece and the inner wall of the fluid channel;
one end of the clamping piece is used for being clamped with the supporting part, and the other end of the clamping piece is used for pushing against the sealing piece so as to enable the sealing piece to be in contact with the periphery side of the through hole;
an assembly gap for fluid to pass through is arranged between the clamping piece and the sealing piece.
4. A fire protection device according to claim 3, wherein the end of the clip adjacent the seal is provided with a raised first guide portion which is in sliding engagement with the inner wall of the fluid passage;
the elastic piece is sleeved on the clamping piece, one end of the elastic piece is abutted against the inner wall of the fluid channel, and the other end of the elastic piece is abutted against the first guide part;
When the clamping piece is clamped with the supporting part, the elastic piece is compressed by the inner wall of the fluid channel and the first guiding part.
5. The fire protection device of claim 4, wherein the fluid passage comprises a main body and openings provided at both ends of the main body, wherein an inner diameter of the openings is smaller than an inner diameter of the main body;
the connection part of the main body and the opening part is narrowed to form a shoulder part;
the supporting part is arranged on the inner wall of the opening part;
one end of the elastic piece is abutted with the shoulder, and the other end of the elastic piece is abutted with the first guide part.
6. The fire protection device of claim 5, wherein the clip is provided with a raised second guide portion that slidingly engages an inner wall of the opening.
7. A fire protection device according to claim 3, wherein the side of the sealing element facing the clamping element has an end face, the peripheral side of which extends towards the clamping element to form a third guide portion which is in sliding engagement with the inner wall of the fluid channel.
8. The fire protection device of claim 7, wherein the third guide portion and the end face enclose a limiting groove;
The clamping piece extends towards one end of the sealing piece to form a limiting part, and the limiting part is at least partially embedded in the limiting groove.
9. A fire protection device according to claim 3, wherein the outer side wall of the seal extends to form a raised fourth guide portion which is a sliding fit with the inner wall of the fluid passage.
10. The fire protection device of claim 9, wherein an end of the clip facing the seal is provided with a groove, and an end of the seal facing the clip is provided with a boss, the boss being at least partially embedded in the groove.
11. The fire protection device of claim 1, wherein a sealing structure is provided in an assembly gap between the housing and the inner housing.
12. The fire protection device according to claim 5, wherein the number of the supporting portions is two or more, and the supporting portions are arranged at intervals along the circumferential direction of the inner wall of the opening portion.
13. The fire protection device according to claim 1, wherein a fusible part is provided at an end of the valve body near the supporting part;
when the supporting part and the fusible part are in a non-fusion state, the valve body is clamped with the supporting part so as to support the valve body to be in the first position;
The elastic member releases at least part of elastic potential energy to drive the valve body in the second position in a state that the supporting portion and/or the fusible portion is in a molten state.
14. The fire protection device of any one of claims 1-13, wherein the valve body comprises a first valve body and a second valve body;
the first valve body and the second valve body are symmetrically arranged on two sides of the through hole;
when at least one of the first valve body and the second valve body is abutted against the peripheral side of the through hole, the body passage is in a blocking state.
15. The fire protection device of claim 14, wherein an elastic support is disposed between the first valve body and the second valve body, the elastic support penetrating the through hole;
two ends of the elastic support piece are respectively abutted against the first valve body and the second valve body;
the elastic force of the elastic supporting piece is smaller than that of the elastic piece.
16. The fire protection device of claim 15, wherein a first mounting groove is provided at an end of the first valve body facing the second valve body, a second mounting groove is provided at an end of the second valve body facing the first valve body, the first mounting groove being disposed opposite the second mounting groove;
The elastic supporting piece is at least partially embedded in the first mounting groove and the second mounting groove.
17. A fire protection apparatus, comprising: a housing and a valve body;
the shell is provided with a fluid channel which is used for communicating with a pipeline of an oxygen therapy instrument or a patient end;
the valve body is arranged in the fluid channel, and the valve body has a first position and a second position relative to the fluid channel;
when in the first position, a gap for passing gas is arranged between the valve body and the fluid channel;
in the second position, the valve body blocks the fluid passage;
the inner walls of the two ends of the fluid channel are respectively provided with at least one raised fusible supporting part;
when the fusible support part is in a non-fused state, the valve body is clamped with the fusible support part so as to support the valve body to be in the first position;
the valve body is switched from the first position to the second position while the fusible support is in a molten state.
18. The fire protection device of claim 17, wherein the fire protection device further comprises: an elastic member;
the elastic piece is arranged between the valve body and the inner wall of the fluid channel;
When the valve body is in the first position, the elastic piece is in a compressed state;
the elastic member is used for providing elastic driving force when the valve body is switched from the first position to the second position.
19. The fire protection device of claim 18, wherein the valve body comprises a clip and a seal, the clip and the seal are of a split construction, and the clip and the seal are slidably connected to an inner wall of the fluid channel, respectively;
the elastic piece is arranged between the clamping piece and the inner wall of the fluid channel;
one end of the clamping piece is used for being clamped with the fusible supporting part, and the other end of the clamping piece is used for pushing against the sealing piece;
an assembly gap for fluid to pass through is arranged between the clamping piece and the sealing piece.
20. The fire protection device of claim 19, wherein an end of the clip adjacent the seal is provided with a raised first guide portion that slidingly engages an inner wall of the fluid passage;
the elastic piece is sleeved on the clamping piece, one end of the elastic piece is abutted against the inner wall of the fluid channel, and the other end of the elastic piece is abutted against the first guide part;
When the clamping piece is clamped with the fusible support part, the elastic piece is compressed by the inner wall of the fluid channel and the first guide part.
21. The fire protection device of claim 20, wherein the fluid channel comprises a main body and openings disposed at both ends of the main body, wherein an inner diameter of the openings is smaller than an inner diameter of the main body;
the connection part of the main body and the opening part is narrowed to form a shoulder part;
the fusible support part is arranged on the inner wall of the opening part;
one end of the elastic piece is abutted with the shoulder, and the other end of the elastic piece is abutted with the first guide part.
22. The fire protection device of claim 21, wherein the clip is provided with a raised second guide portion that slidingly engages an inner wall of the opening.
23. The fire protection device of claim 19, wherein a side of the seal facing the clip has an end face, a peripheral side of the end face extending toward the clip to form a third guide portion that is a sliding fit with an inner wall of the fluid passage.
24. The fire protection device of claim 23, wherein the third guide portion and the end face enclose a limiting groove;
The clamping piece extends towards one end of the sealing piece to form a limiting part, and the limiting part is at least partially embedded in the limiting groove.
25. The fire protection device of claim 19, wherein an outer sidewall of the seal extends to form a raised fourth guide portion that slidingly engages an inner wall of the fluid passageway.
26. The fire protection device of claim 25, wherein an end of the clip facing the seal is provided with a groove, and an end of the seal facing the clip is provided with a boss that is at least partially embedded in the groove.
27. A fire protection apparatus, comprising: a housing and a valve body;
the shell is provided with a fluid channel which is used for communicating with a pipeline of an oxygen therapy instrument or a patient end;
the valve body is arranged in the fluid channel, and the valve body has a first position and a second position relative to the fluid channel;
when in the first position, a gap for passing gas is arranged between the valve body and the fluid channel;
in the second position, the valve body blocks the fluid passage;
The inner walls at two ends of the fluid channel are respectively provided with at least one raised supporting part;
one end of the valve body, which is close to the supporting part, is provided with a fusible part;
when the fusible part is in a non-fusion state, the valve body is clamped with the supporting part so as to support the valve body to be in the first position;
the valve body is switched from the first position to the second position in a state where the fusible part is in a molten state.
28. The fire protection device of claim 27, wherein the fusible portion has an outer diameter that is smaller than an outer diameter of the valve body at other locations.
29. The fire protection device of claim 27, wherein the fire protection device further comprises: an elastic member;
the elastic piece is arranged between the valve body and the inner wall of the fluid channel;
when the valve body is in the first position, the elastic piece is in a compressed state;
the elastic member is used for providing elastic driving force when the valve body is switched from the first position to the second position.
30. The fire protection device of claim 29, wherein the valve body comprises a clip and a seal, the clip and the seal are of a split construction, and the clip and the seal are slidably connected to an inner wall of the fluid channel, respectively;
The fusible part is arranged at one end of the clamping piece, which is close to the supporting part, and the elastic piece is arranged between the clamping piece and the inner wall of the fluid channel;
one end of the clamping piece is used for being clamped with the supporting part, and the other end of the clamping piece is used for pushing against the sealing piece;
an assembly gap for fluid to pass through is arranged between the clamping piece and the sealing piece.
31. The fire protection device of claim 30, wherein an end of the clip adjacent the seal is provided with a raised first guide portion that slidingly engages an inner wall of the fluid passage;
the elastic piece is sleeved on the clamping piece, one end of the elastic piece is abutted against the inner wall of the fluid channel, and the other end of the elastic piece is abutted against the first guide part;
when the clamping piece is clamped with the supporting part, the elastic piece is compressed by the inner wall of the fluid channel and the first guiding part.
32. The fire protection device of claim 31, wherein the fluid channel comprises a main body and openings disposed at both ends of the main body, wherein an inner diameter of the openings is smaller than an inner diameter of the main body;
The connection part of the main body and the opening part is narrowed to form a shoulder part;
the supporting part is arranged on the inner wall of the opening part;
one end of the elastic piece is abutted with the shoulder, and the other end of the elastic piece is abutted with the first guide part.
33. The fire protection device of claim 32, wherein the clip is provided with a raised second guide portion that slidingly engages an inner wall of the opening.
34. The fire protection device of claim 30, wherein a side of the seal facing the clip has an end face, a peripheral side of the end face extending toward the clip to form a third guide portion that is a sliding fit with an inner wall of the fluid passage.
35. The fire protection device of claim 34, wherein the third guide portion and the end face enclose a limiting groove;
the clamping piece extends towards one end of the sealing piece to form a limiting part, and the limiting part is at least partially embedded in the limiting groove.
36. The fire protection device of claim 30, wherein an outer sidewall of the seal extends to form a raised fourth guide portion that slidingly engages an inner wall of the fluid passageway.
37. The fire protection device of claim 30, wherein an end of the clip facing the seal is provided with a groove, and an end of the seal facing the clip is provided with a boss, the boss being at least partially embedded in the groove.
38. A ventilation therapy device comprising a fire protection arrangement according to any one of claims 1 to 37.
CN202223599609.4U 2022-06-30 2022-12-30 Fireproof device and ventilation treatment equipment Active CN219595512U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202223599609.4U CN219595512U (en) 2022-12-30 2022-12-30 Fireproof device and ventilation treatment equipment
PCT/CN2023/105040 WO2024002359A1 (en) 2022-06-30 2023-06-30 Fireproof device, oxygen therapy instrument, and ventilation therapy system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223599609.4U CN219595512U (en) 2022-12-30 2022-12-30 Fireproof device and ventilation treatment equipment

Publications (1)

Publication Number Publication Date
CN219595512U true CN219595512U (en) 2023-08-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223599609.4U Active CN219595512U (en) 2022-06-30 2022-12-30 Fireproof device and ventilation treatment equipment

Country Status (1)

Country Link
CN (1) CN219595512U (en)

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