Self-cleaning anti-pollution sputum suction device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a self-cleaning anti-pollution sputum suction device which comprises a box body, a sputum suction connector and a negative pressure connector are arranged on the box body in a penetrating mode, the sputum suction connector is connected with a sputum suction pipe, the negative pressure connector is connected with a negative pressure pipe, and an inner cavity of the box body is divided into a sputum storage cavity, a liquid storage cavity and a positive and negative pressure cavity. The sputum storage chamber is in through connection with the sputum suction connector, the positive and negative pressure chamber is in through connection with the negative pressure connector, and the positive and negative pressure chamber is respectively communicated with the sputum storage chamber and the liquid storage chamber; the one-way circulation assembly is arranged between the sputum suction connector and the sputum suction pipe in a communicating mode and communicated with the liquid storage cavity. And the positive-negative pressure generator is communicated with the negative pressure pipe. According to the self-cleaning sputum suction tube, sputum suction or flushing of the sputum suction tube is carried out by regulating and controlling positive pressure or negative pressure generated in the positive and negative pressure cavity, self-cleaning of the sputum suction tube is achieved after sputum suction is completed, and the situation that when the sputum suction tube is detached and pulled out, residual sputum in the sputum suction tube splashes and leaks out, and pollution is caused is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a self -cleaning pollution prevention sputum suction device. BACKGROUND

[0002] Sputum suction refers to sucking out the sputum of respiratory tract through the oral cavity, nasal cavity and artificial airway to keep the respiratory tract unobstructed, and is suitable for coma patients and patients with a lot of sputum that may cause suffocation. During the sputum suction process, the negative pressure generator is connected through the negative pressure pipe, the negative pressure is generated in the chamber through the suction of the negative pressure pipe, and then the sputum of the patient's respiratory tract is sucked into the chamber through the sputum suction tube. After the sputum suction is completed, the sputum suction tube needs to be cleaned. However, the existing sputum suction device needs to disassemble the sputum suction tube for cleaning, which leads to low cleaning efficiency. At the same time, the residual sputum in the sputum suction tube may splash and leak out when the sputum suction tube is disassembled and pulled out, causing pollution. Therefore, it is necessary to realize self-cleaning of the sputum suction tube after the sputum suction is completed.

[0003] In the prior art, for example, the utility model CN211096459U sputum suction device needs to pull out the sputum suction tube for cleaning after the sputum suction is completed. In addition, the sputum collection bottle is disassembled and cleaned, and then the flushing port cover on the upper part of the device body is opened to connect the water source for flushing. The patent has low cleaning efficiency. At the same time, the residual sputum in the sputum suction tube may splash and leak out when the sputum suction tube is disassembled and pulled out, causing pollution.

[0004] Therefore, how to realize self-cleaning of the sputum suction tube after the sputum suction is completed is a problem to be solved in the technical field. UTILITY MODEL CONTENTS

[0005] In view of the defects that the existing sputum suction device needs to disassemble the sputum suction tube for cleaning, which leads to low cleaning efficiency, and the residual sputum in the sputum suction tube may splash and leak out when the sputum suction tube is disassembled and pulled out, causing pollution, a self-cleaning pollution prevention sputum suction device is provided, which generates positive pressure or negative pressure in the positive pressure and negative pressure chamber by regulation and control, performs sputum suction or flushing of the sputum suction tube, and realizes self-cleaning of the sputum suction tube after the sputum suction is completed.

[0006] In order to achieve the above utility model purposes, the utility model provides the following technical scheme:

[0007] A self-cleaning pollution prevention sputum suction device, comprising a box body, a sputum suction joint and a negative pressure joint are provided through the box body, a sputum suction tube is connected with the sputum suction joint, a negative pressure pipe is connected with the negative pressure joint, and the device further comprises:

[0008] The internal chamber of the box is divided into a sputum storage chamber, a liquid storage chamber and a positive and negative pressure chamber, the sputum storage chamber is in through connection with the sputum suction connector, the positive and negative pressure chamber is in through connection with the negative pressure connector, the positive and negative pressure chamber is in communication with the sputum storage chamber and the liquid storage chamber respectively, and the liquid storage chamber is used for storing cleaning liquid;

[0009] A one-way flow component is arranged in communication between the sputum suction connector and the sputum suction tube, the one-way flow component is in communication with the liquid storage chamber, and the one-way flow component is used for limiting the flow path of sputum and cleaning liquid, so that when the positive and negative pressure chamber is under negative pressure, sputum is sucked into the sputum storage chamber from the sputum suction tube, and when the positive and negative pressure chamber is under positive pressure, the cleaning liquid in the liquid storage chamber enters the sputum suction tube for flushing.

[0010] A positive and negative pressure generator is in communication with the negative pressure tube, and the positive and negative pressure generator is used for generating positive pressure or negative pressure in the positive and negative pressure chamber.

[0011] As a preferred embodiment, a piston is sealingly and tightly arranged in the positive and negative pressure chamber, a lifting mechanism is fixedly connected to the box, the lifting mechanism is in transmission connection with the piston, and the piston is used for regulating the space size of the positive and negative pressure chamber.

[0012] As a preferred embodiment, the lifting mechanism comprises an electric lifting rod, a shell of the electric lifting rod is fixedly connected to the box, the electric lifting rod is arranged in the positive and negative pressure chamber in a penetrating manner, and a transmission end of the electric lifting rod is connected to the piston.

[0013] As a preferred embodiment, the one-way flow component comprises:

[0014] A three-way pipeline, three interfaces of the three-way pipeline are arranged as interface I, interface II and interface III, the interface I is in communication with the sputum suction tube;

[0015] A one-way valve I, an outlet end of the one-way valve I is in communication with the interface II, an inlet end of the one-way valve I is in communication with one end of a liquid pipeline, and the other end of the liquid pipeline is in through connection with the bottom of the liquid storage chamber;

[0016] A one-way valve II, an inlet end of the one-way valve II is in communication with the interface III, and an outlet end of the one-way valve II is in communication with the sputum suction connector.

[0017] As a preferred embodiment, the positive and negative pressure chamber and the sputum storage chamber are in communication in the following manner:

[0018] The top end of the positive and negative pressure chamber is in through connection with one end of a gas pipeline I, and the other end of the gas pipeline I is in through connection with the top end of the sputum storage chamber.

[0019] As a preferred embodiment, the positive and negative pressure chamber and the liquid storage chamber are connected in the following way:

[0020] The top end of the positive and negative pressure chamber is connected with one end of a gas pipeline II, and the other end of the gas pipeline II is connected with the top end of the liquid storage chamber.

[0021] As a preferred embodiment, a flow guide pipe is arranged in the sputum storage chamber, the flow guide pipe is connected with the sputum suction connector, and the flow guide pipe is used to extend the outlet end of the sputum suction connector to the bottom of the sputum storage chamber, so that the sputum cannot enter the positive and negative pressure chamber under the action of negative pressure.

[0022] As a preferred embodiment, the bottom of the sputum storage chamber is also connected with a liquid discharge connector, the liquid discharge connector is detachably connected with a plug I, and the liquid discharge connector is used to discharge the sputum in the sputum storage chamber.

[0023] As a preferred embodiment, the top end of the liquid storage chamber is also connected with a liquid injection connector, the liquid injection connector is detachably connected with a plug II, and the liquid injection connector is used to inject cleaning liquid into the liquid storage chamber.

[0024] As a preferred embodiment, the box is also provided with an observation window I and an observation window II, the observation window I is arranged corresponding to the sputum storage chamber, the observation window II is arranged corresponding to the liquid storage chamber, the observation window I is used to observe the sputum content in the sputum storage chamber, and the observation window II is used to observe the remaining amount of cleaning liquid in the liquid storage chamber.

[0025] Compared with the prior art, the sputum suction pipe and the negative pressure pipe are connected with the positive and negative pressure chamber and the sputum storage chamber respectively, the negative pressure pipe is isolated from the sputum storage chamber, the sputum in the sputum storage chamber cannot enter the negative pressure pipe, the sputum storage chamber and the liquid storage chamber generate positive pressure or negative pressure together with the positive and negative pressure chamber, the positive pressure or negative pressure in the positive and negative pressure chamber is controlled, the sputum is sucked or the sputum suction pipe is flushed, the sputum suction pipe is self-cleaned after the sputum is sucked, the cleaning efficiency is improved, and the situation that the sputum in the sputum suction pipe is splashed and leaked out to cause pollution when the sputum suction pipe is disassembled and pulled out is avoided.

[0026] The sputum suction pipe and the negative pressure pipe are connected with the positive and negative pressure chamber and the sputum storage chamber respectively, the negative pressure pipe is isolated from the sputum storage chamber, the sputum in the sputum storage chamber cannot enter the negative pressure pipe, the sputum storage chamber and the liquid storage chamber generate positive pressure or negative pressure together with the positive and negative pressure chamber, the positive pressure or negative pressure in the positive and negative pressure chamber is controlled, the sputum is sucked or the sputum suction pipe is flushed, the sputum suction pipe is self-cleaned after the sputum is sucked, the cleaning efficiency is improved, and the situation that the sputum in the sputum suction pipe is splashed and leaked out to cause pollution when the sputum suction pipe is disassembled and pulled out is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of not paying creative labor.

[0028] Figure 1 is a structural schematic diagram of the present application;

[0029] Figure 2 is an internal structure schematic diagram of the present application;

[0030] Figure 3 is a one-way flow assembly connection schematic diagram of the present application;

[0031] Figure 4 is an observation window I and observation window II connection schematic diagram of the present application; DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, and obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments.

[0033] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or suspended, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the utility model, still need explaining, unless another explicit provision and limitation, term "arrangement", "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through intermediate medium indirectly connected, can be two element inside the intercommunication.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model with specific circumstances.

[0036] As Figures 1-4 shown,

[0037] A self-cleaning anti-pollution sputum suction device, comprising a box body 1, the box body 1 is provided with suction connector 11 and negative pressure connector 12, the suction connector 11 is connected with suction tube 13, the negative pressure connector 12 is connected with negative pressure pipe 14, it further includes:

[0038] The internal cavity of the box body 1 is divided into sputum storage chamber 2, liquid storage chamber 3 and positive-negative pressure chamber 4, the sputum storage chamber 2 is connected with the suction connector 11, the positive-negative pressure chamber 4 is connected with the negative pressure connector 12, the positive-negative pressure chamber 4 is communicated with the sputum storage chamber 2, liquid storage chamber 3 respectively, the liquid storage chamber 3 is used to store cleaning liquid;

[0039] One-way flow component 5, the one-way flow component 5 is communicated between the suction connector 11 and the suction tube 13, the one-way flow component 5 is communicated with the liquid storage chamber 3, the one-way flow component 5 is used to limit the flow path of sputum and cleaning liquid, so that, when the positive-negative pressure chamber 4 is negative pressure, sputum is sucked into the sputum storage chamber 2 by the suction tube 13, when the positive-negative pressure chamber 4 is positive pressure, the cleaning liquid in the liquid storage chamber 3 enters the suction tube 13 and is washed;

[0040] Positive-negative pressure generator 6, the positive-negative pressure generator 6 is communicated with the negative pressure pipe 14, the positive-negative pressure generator 6 is used to generate positive pressure or negative pressure in the positive-negative pressure chamber 4.

[0041] When sputum suction is performed, the positive and negative pressure generator 6 is started, the positive and negative pressure generator 6 includes a positive and negative pressure air pump, and the positive and negative pressure generator 6 extracts air in the positive and negative pressure chamber 4 through the negative pressure pipe 14, so that negative pressure is generated in the positive and negative pressure chamber 4; when the positive and negative pressure chamber 4 is under negative pressure, the communication between the positive and negative pressure chamber 4 and the sputum storage chamber 2 and the liquid storage chamber 3 causes negative pressure to be generated in the sputum storage chamber 2 and the liquid storage chamber 3; when the liquid storage chamber 3 is under negative pressure, the communication between the one-way flow component 5 and the liquid storage chamber 3 is closed, so that the cleaning liquid in the liquid storage chamber 3 cannot enter the sputum suction pipe 13; when the sputum storage chamber 2 is under negative pressure, after the sputum suction pipe 13 is inserted into the respiratory tract of the patient, the sputum is sucked into the sputum storage chamber 2 through the negative pressure generated by the sputum storage chamber 2, and the sputum suction pipe 13 and the negative pressure pipe 14 are respectively communicated with the positive and negative pressure chamber 4 and the sputum storage chamber 2, and the negative pressure pipe 14 is isolated from the sputum storage chamber 2, so that the sputum in the sputum storage chamber 2 cannot enter the negative pressure pipe 14;

[0042] After sputum suction is completed, the positive and negative pressure generator 6 outputs positive pressure, the positive and negative pressure generator 6 injects external air into the positive and negative pressure chamber 4 through the negative pressure pipe 14, so that positive pressure is generated in the positive and negative pressure chamber 4, and when the positive and negative pressure chamber 4 is under positive pressure, the communication between the positive and negative pressure chamber 4 and the sputum storage chamber 2 and the liquid storage chamber 3 causes positive pressure to be generated in the sputum storage chamber 2 and the liquid storage chamber 3; when the sputum storage chamber 2 is under positive pressure, the communication between the one-way flow component 5 and the sputum suction connector 11 is closed, so that the sputum in the sputum storage chamber 2 cannot flow back to the sputum suction pipe 13, and when the liquid storage chamber 3 is under positive pressure, the cleaning liquid in the liquid storage chamber 3 is pushed by the pressure and flows into the sputum suction pipe 13 through the one-way flow component 5, so that the cleaning liquid flushes the sputum suction pipe 13; in this technical solution, the sputum suction pipe 13 and the negative pressure pipe 14 are respectively communicated with the positive and negative pressure chamber 4 and the sputum storage chamber 2, the negative pressure pipe 14 is isolated from the sputum storage chamber 2, so that the sputum in the sputum storage chamber 2 cannot enter the negative pressure pipe 14, and the sputum storage chamber 2, the liquid storage chamber 3 and the positive and negative pressure chamber 4 generate positive pressure or negative pressure, the positive pressure or negative pressure in the positive and negative pressure chamber 4 is controlled to perform sputum suction or flush the sputum suction pipe 13, so that the sputum suction pipe 13 is self-cleaned after sputum suction is completed, the cleaning efficiency is improved, and the situation that the sputum remaining in the sputum suction pipe 13 is splashed and leaked out to cause pollution when the sputum suction pipe 13 is disassembled and pulled out is avoided.

[0043] As a preferred embodiment, the positive and negative pressure chamber 4 is sealingly and closely provided with a piston 41, the box body 1 is fixedly connected with a lifting mechanism, the lifting mechanism is in transmission connection with the piston 41, and the piston 41 is used to control the space size of the positive and negative pressure chamber 4.

[0044] When the sputum concentration increases, a larger suction force needs to be generated in the sputum suction tube 13 to suck the sputum into the sputum suction tube 13. The more sensitive patients will cause discomfort when a larger suction force is generated in the sputum suction tube 13, and the cleaning liquid needs a certain pressure to flush the sputum suction tube 13 clean, so the positive pressure or negative pressure intensity in the positive and negative pressure chamber 4 needs to be regulated. Therefore, the piston 41 is sealingly and fitly arranged in the positive and negative pressure chamber 4, and the piston 41 is driven to displace in the positive and negative pressure chamber 4 by the lifting mechanism, so as to regulate the space size of the positive and negative pressure chamber 4. By regulating the space size of the positive and negative pressure chamber 4, the positive pressure or negative pressure intensity is regulated.

[0045] As a preferred embodiment, the lifting mechanism comprises an electric lifting rod 42, a housing of the electric lifting rod 42 is fixedly connected with the box body 1, the electric lifting rod 42 is penetratingly arranged in the positive and negative pressure chamber 4, and a transmission end of the electric lifting rod 42 is connected with the piston 41.

[0046] When the space size of the positive and negative pressure chamber 4 is regulated, the electric lifting rod 42 is controlled to lift and drive the piston 41 to displace in the positive and negative pressure chamber 4. After adjustment, the electric lifting rod 42 supports the piston 41 to limit the active position of the piston 41 in the positive and negative pressure chamber 4, so as to avoid displacement of the piston 41 affected by the positive pressure or negative pressure.

[0047] As a preferred embodiment, the one-way flow assembly 5 comprises:

[0048] The three-way pipe 51 has three interfaces, which are interface I, interface II and interface III. The interface I is in communication with the sputum suction tube 13.

[0049] The one-way valve I 52 has an outlet end in communication with the interface II, and an inlet end in communication with one end of a liquid pipe 53. The other end of the liquid pipe 53 is penetratingly connected with the bottom of the liquid storage chamber 3.

[0050] The one-way valve II 54 has an inlet end in communication with the interface III, and an outlet end in communication with the sputum suction connector 11.

[0051] When sputum is sucked, the positive-negative pressure chamber 4 is under negative pressure, and the negative pressure is generated in the sputum storage chamber 2 and the liquid storage chamber 3. At this time, the one-way valve I 52 is closed, the communication between the liquid pipeline 53 and the three-way pipeline 51 is closed, the cleaning liquid in the liquid storage chamber 3 cannot enter the sputum suction tube 13, and the one-way valve II 54 is in an open state. The negative pressure in the sputum storage chamber 2 generates suction in the sputum suction tube 13. After the sputum suction tube 13 is inserted into the respiratory tract of the patient, the sputum is sucked into the sputum storage chamber 2 through the negative pressure generated in the sputum storage chamber 2. When the sputum suction tube 13 is cleaned, the positive-negative pressure chamber 4 is under positive pressure, and the positive pressure is generated in the sputum storage chamber 2 and the liquid storage chamber 3. At this time, the one-way valve I 52 is in an open state, the cleaning liquid in the liquid storage chamber 3 is pushed by the pressure, flows into the sputum suction tube 13 through the liquid pipeline 53, the interface II and the interface I, and flushes the sputum suction tube 13. The one-way valve II 54 is closed, the communication between the sputum joint 11 and the interface III is closed, and the sputum in the sputum storage chamber 2 cannot enter the negative pressure tube 14.

[0052] As a preferred embodiment, the communication mode of the positive-negative pressure chamber 4 and the sputum storage chamber 2 is that:

[0053] The top end of the positive-negative pressure chamber 4 is connected with one end of the gas pipeline I 43, and the other end of the gas pipeline I 43 is connected with the top end of the sputum storage chamber 2.

[0054] Further, the communication mode of the positive-negative pressure chamber 4 and the liquid storage chamber 3 is that:

[0055] The top end of the positive-negative pressure chamber 4 is connected with one end of the gas pipeline II 44, and the other end of the gas pipeline II 44 is connected with the top end of the liquid storage chamber 3.

[0056] The positive-negative pressure chamber 4 and the sputum storage chamber 2 are communicated through the gas pipeline I 43, so that the air in the sputum storage chamber 2 can be extracted to generate negative pressure. When the sputum storage chamber 2 is under negative pressure, the sputum in the sputum storage chamber 2 cannot enter the gas pipeline I 43, and the gas can be injected into the sputum storage chamber 2 through the gas pipeline I 43 to generate positive pressure. Similarly, the positive-negative pressure chamber 4 and the liquid storage chamber 3 are communicated through the gas pipeline II 44. The positive-negative pressure chamber 4 injects gas into the sputum storage chamber 2 through the gas pipeline II 44 to generate positive pressure, pushes the cleaning liquid in the liquid storage chamber 3 into the sputum suction tube 13 to flush the sputum suction tube 13, and extracts the air in the liquid storage chamber 3 through the gas pipeline II 44. Since the gas pipeline II 44 is connected with the top end of the liquid storage chamber 3, the cleaning liquid in the liquid storage chamber 3 cannot enter the gas pipeline II 44.

[0057] As a preferred embodiment, a flow guide pipe 21 is further arranged in the sputum storage chamber 2, the flow guide pipe 21 is in communication with the sputum suction connector 11, and the flow guide pipe 21 is used to extend the outlet end of the sputum suction connector 11 to the bottom of the sputum storage chamber 2, so that the sputum cannot enter the positive-negative pressure chamber 4 under the action of negative pressure.

[0058] When the negative pressure is large and the gas pipeline I 43 is close to the position of the sputum suction connector 11, under the action of negative pressure, the sputum will enter the positive-negative pressure chamber 4 from the outlet end of the sputum suction connector 11 through the gas pipeline I 43, causing blockage and pollution; therefore, the flow guide pipe 21 is connected to the outlet end of the sputum suction connector 11, the outlet end of the sputum suction connector 11 is extended to the bottom of the sputum storage chamber 2 through the flow guide pipe 21, so that the distance between the outlet end of the sputum suction connector 11 and the gas pipeline I 43 is enlarged, so that the sputum cannot enter the positive-negative pressure chamber 4 from the outlet end of the sputum suction connector 11 through the gas pipeline I 43, avoiding blockage and pollution.

[0059] As a preferred embodiment, the bottom of the sputum storage chamber 2 is further connected with a liquid discharge connector 22, the liquid discharge connector 22 is detachably connected with a plug I 23, and the liquid discharge connector 22 is used to discharge the sputum in the sputum storage chamber 2.

[0060] After the sputum in the sputum storage chamber 2 is stored to a certain amount, the sputum in the sputum storage chamber 2 needs to be discharged and cleaned for recycling of the sputum storage chamber 2, so the liquid discharge connector 22 is connected to the bottom of the sputum storage chamber 2, the plug I 23 is detached from the liquid discharge connector 22 when the sputum in the sputum storage chamber 2 is discharged and cleaned, the sputum is discharged from the liquid discharge connector 22, and cleaning liquid can be injected into the sputum storage chamber 2 from the sputum suction connector 11 to clean the inside of the sputum storage chamber 2, after the sputum in the sputum storage chamber 2 is discharged and cleaned, the plug I 23 is connected to the liquid discharge connector 22 to block the liquid discharge connector 22.

[0061] As a preferred embodiment, the top end of the liquid storage chamber 3 is further connected with a liquid injection connector 31, the liquid injection connector 31 is detachably connected with a plug II 32, and the liquid injection connector 31 is used to inject cleaning liquid into the liquid storage chamber 3.

[0062] After the cleaning liquid in the liquid storage chamber 3 is consumed, it needs to be replenished in time for later cleaning use, so the liquid injection connector 31 is connected to the top end of the liquid storage chamber 3, the cleaning liquid in the liquid storage chamber 3 is consumed, and the cleaning liquid is injected into the liquid storage chamber 3 through the liquid injection connector 31 for replenishment, and after the cleaning liquid is replenished, the liquid injection connector 31 is blocked by the plug II 32 to ensure the sealing of the liquid storage chamber 3.

[0063] As a preferred embodiment, the box 1 is further provided with an observation window I 15 and an observation window II 16, the observation window I 15 is arranged corresponding to the sputum storage chamber 2, the observation window II 16 is arranged corresponding to the liquid storage chamber 3, the observation window I 15 is used for observing the sputum content in the sputum storage chamber 2, and the observation window II 16 is used for observing the remaining amount of the cleaning liquid in the liquid storage chamber 3.

[0064] The cleaning liquid in the liquid storage chamber 3 needs to be replenished in time to guarantee the cleaning effect of the sputum suction tube 13, and the sputum in the sputum storage chamber 2 needs to be discharged in time to avoid that too much sputum in the sputum storage chamber 2 enters the positive and negative pressure chamber 4; therefore, the observation window I 15 and the observation window II 16 are arranged corresponding to the sputum storage chamber 2 and the liquid storage chamber 3 on the box 1, respectively, the sputum content in the sputum storage chamber 2 is observed through the observation window I 15 to facilitate the timely discharge of the sputum in the sputum storage chamber 2, and the remaining amount of the cleaning liquid in the liquid storage chamber 3 is observed through the observation window II 16 to facilitate the timely replenishment of the cleaning liquid.

[0065] The above is only a preferred embodiment of the utility model, and is not used for limiting the technical scheme of the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the technical scheme of the utility model should be included in the protection scope of the utility model.

Claims

1. A self-cleaning and anti-pollution sputum suction device, comprising a box body, wherein a sputum suction joint and a negative pressure joint are provided through the box body, wherein the sputum suction joint is connected to a sputum suction tube, and the negative pressure joint is connected to a negative pressure tube, characterized in that: Also includes: The internal chamber of the box body is divided into a sputum storage chamber, a liquid storage chamber and a positive and negative pressure chamber. The sputum storage chamber is connected to the sputum suction joint, and the positive and negative pressure chambers are connected to the negative pressure joint. The positive and negative pressure chambers are respectively connected to the sputum storage chamber and the liquid storage chamber. The liquid storage chamber is used to store cleaning liquid. a one-way flow component, the one-way flow component being communicatively disposed between the sputum suction connector and the sputum suction tube, the one-way flow component being communicated with the liquid storage chamber, the one-way flow component being used to restrict the flow paths of sputum and cleaning liquid, such that, when the positive and negative pressure chamber is under negative pressure, sputum is sucked into the sputum storage chamber by the sputum suction tube, and when the positive and negative pressure chamber is under positive pressure, the cleaning liquid in the liquid storage chamber enters the sputum suction tube for flushing; A positive and negative pressure generator is connected to the negative pressure tube and is used to generate positive pressure or negative pressure in the positive and negative pressure chamber.

2. The self-cleaning and anti-pollution sputum suction device according to claim 1, characterized in that: A piston is sealed and fitted in the positive and negative pressure chambers. A lifting mechanism is fixedly connected to the box body. The lifting mechanism is in transmission connection with the piston. The piston is used to adjust the space size of the positive and negative pressure chambers.

3. The self-cleaning anti-pollution sputum suction device according to claim 2, characterized in that: The lifting mechanism includes an electric lifting rod, a shell of the electric lifting rod is fixedly connected to the box body, the electric lifting rod is arranged in the positive and negative pressure chamber, and a transmission end of the electric lifting rod is connected to the piston.

4. The self-cleaning and anti-pollution sputum suction device according to claim 1, characterized in that: The one-way flow component comprises: A three-way pipe, wherein the three interfaces of the three-way pipe are configured as interface I, interface II and interface III, and the interface I is connected to the sputum suction tube; a one-way valve I, wherein the outlet end of the one-way valve I is connected to the interface II, the inlet end of the one-way valve I is connected to one end of a liquid pipeline, and the other end of the liquid pipeline is connected to the bottom of the liquid storage chamber; One-way valve II, the inlet end of the one-way valve II is connected to the interface III, and the outlet end of the one-way valve II is connected to the sputum suction connector.

5. The self-cleaning and anti-pollution sputum suction device according to claim 1, characterized in that: The positive and negative pressure chambers are connected to the sputum storage chamber in the following manner: The top end of the positive and negative pressure chamber is connected to one end of the gas pipeline I, and the other end of the gas pipeline I is connected to the top end of the sputum storage chamber.

6. The self-cleaning and anti-pollution sputum suction device according to claim 1, characterized in that: The positive and negative pressure chambers are connected to the liquid storage chamber in the following manner: The top end of the positive and negative pressure chamber is connected to one end of the gas pipeline II, and the other end of the gas pipeline II is connected to the top end of the liquid storage chamber.

7. The self-cleaning and anti-pollution sputum suction device according to claim 1, characterized in that: The sputum storage chamber is also provided with a guide tube, which is connected to the sputum suction joint. The guide tube is used to extend the outlet end of the sputum suction joint to the bottom of the sputum storage chamber, so that sputum cannot enter the positive and negative pressure chambers under the action of negative pressure.

8. The self-cleaning and anti-pollution sputum suction device according to claim 1, characterized in that: The bottom of the sputum storage chamber is also connected through a drainage joint, and the drainage joint is detachably connected to a sealing plug I. The drainage joint is used to discharge the sputum in the sputum storage chamber.

9. The self-cleaning and anti-pollution sputum suction device according to claim 1, characterized in that: The top of the liquid storage chamber is also connected through a liquid injection joint, and the liquid injection joint is detachably connected to a sealing plug II. The liquid injection joint is used to inject cleaning liquid into the liquid storage chamber.

10. The self-cleaning and anti-pollution sputum suction device according to claim 1, characterized in that: The box body is also provided with an observation window I and an observation window II. The observation window I is provided corresponding to the sputum storage chamber, and the observation window II is provided corresponding to the liquid storage chamber. The observation window I is used to observe the sputum content in the sputum storage chamber, and the observation window II is used to observe the remaining amount of cleaning liquid in the liquid storage chamber.

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