A gas blowing device

Abstract

This application provides a gas blowing device, which includes a filter and a mounting mechanism for mounting the filter. The mounting mechanism includes a main body, a valve assembly, and an actuation mechanism. The actuation mechanism can be pushed by the filter to move between a first position and a second position. When the filter is not in contact with the actuation mechanism, the actuation mechanism is in the first position, the actuation mechanism does not actuate the valve assembly, the valve assembly is in a closed state, and the valve assembly is not connected to the filter. When the filter is installed in the main body and presses against the actuation mechanism to put the actuation mechanism in the second position, the actuation mechanism actuates the valve assembly to open the valve assembly, and the valve assembly is connected to the filter.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to a gas blowing device. Background Technology

[0002] Minimally invasive surgery refers to a surgical procedure performed inside the human body using modern medical instruments and equipment such as laparoscopes and thoracoscopes. Compared to traditional surgical methods, minimally invasive surgery has advantages such as less trauma, less pain, and faster recovery.

[0003] With advancements in technology, minimally invasive surgical robots have matured and are widely used. A minimally invasive surgical robot typically includes a main control console and slave operating devices. The main control console sends control commands to the slave operating devices based on the surgeon's instructions, controlling the slave operating devices. The slave operating devices respond to the control commands sent by the main control console and perform the corresponding surgical procedures. Surgical instruments are connected to the drive mechanism of the slave operating devices to perform surgical procedures. The distal end of the surgical instruments includes an end effector for performing surgical operations and joint components connected to the end effector that can move with multiple degrees of freedom.

[0004] During minimally invasive abdominal / thoracic surgery, it is necessary to create an artificial pneumoperitoneum within the patient's body cavity to provide surgical operating space. This is achieved using existing pneumoperitoneum machines. Smoke is generated during surgeries using energy-based devices, and current pneumoperitoneum machines do not have smoke extraction capabilities. To achieve this, a filter device needs to be added to the pneumoperitoneum machine. However, existing technologies lack solutions for how to install this filter device and the design of the associated installation mechanism. Summary of the Invention

[0005] Based on this, this application provides a gas blowing device in a first aspect, comprising:

[0006] A filtration device, the filtration device including a flow path for gas to pass through;

[0007] The mounting mechanism includes a main body, a valve assembly, and an actuation mechanism, which can be pushed by the filter device to move between a first position and a second position;

[0008] When the filter device is not in contact with the actuating mechanism, the actuating mechanism is in the first position, the actuating mechanism does not actuate the valve assembly, the valve assembly is in the closed state, and the valve assembly is not connected to the flow path; when the filter device is installed into the cavity of the main body and presses against the actuating mechanism to make the actuating mechanism in the second position, the actuating mechanism actuates the valve assembly to open the valve assembly, and the valve assembly is connected to the flow path.

[0009] In one embodiment, the valve assembly includes a conduit and a valve stem for opening or closing the conduit; the actuation mechanism includes a base and a push rod, one end of the push rod and the valve stem being connected to the base, and the other end of the push rod extending into the cavity; when the actuation mechanism is in the second position, the filter device presses against the push rod to open the conduit at the other end of the valve stem.

[0010] In one embodiment, the bottom of the body has a hole for connecting the pipeline and the flow path, and when the actuation mechanism is in the first position, the valve stem closes the connection between the pipeline and the hole.

[0011] In one embodiment, the actuation mechanism further includes a spring sleeved on the valve stem. When the actuation mechanism is in a first position, the spring deforms to cause the valve stem to abut against the bottom of the body, thereby closing the connection between the pipeline and the orifice.

[0012] In one embodiment, the valve assembly includes a mechanical switch, and the actuation mechanism includes a base, a push rod, and a push rod connected to the base. One end of the push rod extends into the cavity. When the actuation mechanism is in a first position, the push rod abuts against the mechanical switch to close the valve assembly. When the actuation mechanism is in a second position, the push rod is moved by a filtering device to actuate the mechanical switch, thereby opening the valve assembly.

[0013] In one embodiment, the actuation mechanism includes a push rod and a resilient mechanism. When the actuation mechanism is in a first position, the resilient mechanism deforms to bring the mechanical switch close to or abut against a first end of the push rod. When the actuation mechanism is in a second position, the filtering device pushes the push rod to move so that abut against the mechanical switch at a second end, thereby actuating the mechanical switch and opening the valve assembly.

[0014] In one embodiment, the displacement direction of the push rod is the same as the movement direction of the mechanical switch.

[0015] In one embodiment, the direction of movement of the push rod is perpendicular to the direction of movement of the mechanical switch.

[0016] In one embodiment, the diameter of the second end of the push rod is larger than the diameter of its first end.

[0017] In one embodiment, the extension direction of the push rod is the same as the axial direction of the filter device.

[0018] In one embodiment, the gas blowing device further includes a main unit and an air pump, the air pump being located within the main unit, the filtration device including a first flow path and a second flow path, the gas in the first flow path entering the second flow path after passing through the air pump, and the valve assembly being configured to control the opening or closing of the first and second flow paths with the air passage within the main unit.

[0019] In one embodiment, the gas blowing device further includes a sleeve and a tube assembly, the sleeve being connected to the filter device via the tube assembly, gas in the second flow path being injected into the sleeve through the tube assembly to form a gaseous seal in the sleeve, and gas in the sleeve being returned to the first flow path through the tube assembly.

[0020] In one embodiment, the filter device is provided with an identification component, and the mounting mechanism is provided with two microswitches. When the filter device is a three-chamber filter device and the actuation mechanism is in the second position, the identification component triggers only one of the two microswitches; when the filter device is a two-chamber filter device and the actuation mechanism is in the second position, the identification component triggers both microswitches simultaneously. Attached Figure Description

[0021] Figure 1 This is a schematic diagram illustrating a usage scenario of a gas blowing device according to an embodiment of this application;

[0022] Figure 2a This is a cross-sectional view of the mounting mechanism of a filter device according to an embodiment of this application;

[0023] Figure 2b This is an exploded view of the mounting mechanism of a filter device according to an embodiment of this application;

[0024] Figure 3a and Figure 3b This is a schematic diagram illustrating the process of installing a filter device into a mounting mechanism according to an embodiment of this application.

[0025] Figure 4 This is a rear view of the mounting mechanism according to one embodiment of this application;

[0026] Figure 5 This is a schematic diagram of a filtering device and installation mechanism according to another embodiment of this application;

[0027] Figure 6a and Figure 6b A schematic diagram illustrating the process of installing a filter device onto a mounting mechanism according to an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of gas flow between a three-chamber filter device and a three-chamber sleeve according to an embodiment of this application;

[0029] Figure 8a A schematic diagram showing the triggering of a microswitch by the identification component after the three-chamber filter device of one embodiment of this application is installed in place;

[0030] Figure 8b This is a schematic diagram showing the microswitch triggered by the identification component after the two-chamber filter device of one embodiment of this application is installed in place. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application and are not intended to limit the scope of this application.

[0032] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present, or it can refer to the two elements being interconnected via signals. When an element is considered to be "coupled" to another element, it can be directly coupled to the other element or there may be an intermediate element present, or it can refer to the two elements interacting via signals. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. It should be understood that these spatially related terms are intended to cover different orientations of the device in use or operation, in addition to those depicted in the figures. For example, if the device is flipped in the figures, an element or feature described as "below" or "under" other elements or features would be oriented "above" other elements or features. Therefore, the example term "below" can include both above and below orientations.

[0033] The terms “distal” and “proximal” used in this article are directional terms commonly used in the field of interventional medical devices. “Distal” refers to the end that is farthest from the surgeon during the operation, while “proximal” refers to the end that is closest to the surgeon during the operation.

[0034] The term "tool" is used herein to describe a medical device inserted into a patient's body to perform surgical or diagnostic procedures. This tool includes an end effector, which can be a surgical instrument used to perform surgical procedures, such as an electrocautery device, clamp, stapler, scissor, imaging device (e.g., an endoscope or ultrasound probe), and the like. Some tools used in embodiments of this application further include an articulated component (e.g., a joint assembly) for the end effector, allowing the position and orientation of the end effector to be manipulated with one or more mechanical degrees of freedom relative to an instrument axis. Further, the end effector includes functional mechanical degrees of freedom, such as opening and closing clamps. The tool may also include stored information that can be updated by a surgical system, whereby the storage system can provide one-way or two-way communication between the tool and one or more system components.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “and / or” and “and / or” as used herein include any and all combinations of one or more of the associated listed items.

[0036] One embodiment of this application includes a gas blowing device system, such as... Figure 1 As shown, the gas inhalation system 10 includes a main unit 11, a filter device 12, a tubing assembly 13, and a sleeve 14. The main unit 11 is connected to an external gas source. The main unit 11 contains a controller and a gas path connected to the gas source. The controller controls the pressure and gas flow rate of the gas path. One end of the sleeve 14 is connected to the filter device 12 via the tubing assembly 13, and the other end of the sleeve 14 is inserted into the body cavity P. The main unit 11 injects gas into the body cavity P through the tubing assembly 13 and the sleeve 14 to form an artificial pneumoperitoneum, or extracts gas from the body cavity P, or removes smoke generated during surgery from the body cavity P.

[0037] In some implementation series, such as Figure 2a and Figure 2bAs shown, the cylindrical filter device 12 is detachably installed in the cavity of the mounting mechanism 20. The mounting mechanism 20 includes a main body 21, a valve assembly 22, and an actuation mechanism 25. The main body 21 includes a first main body portion 212 and a second main body portion 213, which are coaxially arranged. The first main body portion 212 has a cavity 214 for accommodating the filter device 12. The valve assembly 22 is mounted on the second main body portion 213. The valve assembly 22 includes three mechanical valves 221, 231, and 241. Each mechanical valve includes an inlet and an outlet. For example, the first valve 221 includes an inlet 221a and an outlet 221b. The filter device 12 includes multiple flow paths for gas passage. One end of each mechanical valve 221, 231, 241 is connected to one of these flow paths, and the other end is connected to a gas path within the main unit 11. The opening / closing of the mechanical valves 221, 231, 241 controls the main unit 11 to either inflate or extract gas from the body cavity P, or inject high-pressure gas into the sleeve 14 to form a gaseous seal within the sleeve 14. The mechanical valves described herein refer to valves that are opened or closed by a mechanical mechanism, not electrically controlled valves such as solenoid valves. In some embodiments, the valve assembly may also include only two mechanical valves.

[0038] The actuation mechanism 25 includes a base 251, an actuating rod 252, and an elastic mechanism 253. The actuating rod 252 and the elastic mechanism 253 are connected to the base 251. The actuating rod 252 includes a first end 252a and a second end 252b. The diameter of the first end 252a is smaller than the diameter of the second end 252b. The second end 252b is used to actuate the mechanical switches of multiple mechanical valves 221, 231, and 241, thereby triggering the opening and closing of the mechanical valves 221, 231, and 241.

[0039] like Figure 3a As shown in 3b, the actuation mechanism 25 can move between a first position and a second position. When the filter device 12 is not yet installed in place (in this embodiment, the filter device 12 is not yet installed in place means that the filter device 12 is not installed at the bottom of the cavity 214), the elastic deformation of the elastic mechanism 253 causes the actuation mechanism 25 to be in the first position. In the first position, the mechanical switch 221c of the first mechanical valve 221 abuts against the first end 252a of the actuation rod 252, or the mechanical switch 221c is close to the first end 252a of the actuation rod 252. The mechanical switch 221c is not actuated, the first mechanical valve 221 is in the closed state, and the first mechanical valve 221 is not in fluid communication with the flow path in the filter device 12. The gas in the gas path in the host 11 will not enter the filter device through the gas outlet 221b.

[0040] like Figure 3bAs shown, after the filter device 12 is installed in place, in this embodiment, the filter device 12 is installed at the bottom of the cavity 214. At this time, the filter device 12 presses against the end of the second end 252b of the top rod 252, causing the actuation mechanism 25 to move to the second position along direction D. In the second position, the mechanical switch 221c of the first mechanical valve 221 abuts against the second end 252b of the actuation rod 252. Since the diameter of the second end 252b is larger than the diameter of the first end 252a, the second end 252b of the actuation rod 252 will actuate the mechanical switch 221c, causing the first mechanical valve 221 to be opened. Thus, the first mechanical valve 221 is in fluid communication with the filter device 12. The gas in the gas path inside the host 11 enters the first mechanical valve 221 from the air inlet 221a, and enters the first flow path of the filter device 12 through the air outlet 221b and the air inlet 12a of the filter device 12, and finally enters the sleeve 14 through the pipe group 13. In one embodiment, the bottom of the first main body 212 has multiple holes 211. After the first mechanical valve 221 is opened, gas flows from the first mechanical valve 221 through one hole 211 and enters the flow path of the filter device 12. In other embodiments, the bottom of the first main body 212 is an open opening, and after the filter device 12 is installed, the outlet 221b is directly connected to the inlet 12a of the filter device 12.

[0041] When the actuating mechanism 25 is in the second position, the elastic mechanism 253 further deforms (e.g., is further compressed). After the filter device 12 is removed from the cavity 214, the elastic mechanism 253 elastically recovers, causing the actuating mechanism 25 to move back to the first position, thereby closing the first mechanical valve 221. In this embodiment, the elastic mechanism 253 includes a spring 253a and a guide rod 213. The spring 253a is sleeved on the guide rod 253b. One end of the guide rod 253b is fixed to the base 251, and the other end is a free end. One end of the spring 253a abuts against the free end of the guide rod 253b, and the other end of the spring 253b abuts against the second main body portion 213. The actuating mechanism 25 actuates the second mechanical valve 231 and the third mechanical valve 241 in the same manner, which will not be described in detail here.

[0042] In one embodiment, the filter device 12 is not installed at the bottom of the cavity 214, but can be installed at other positions in the cavity 214. For example, a transmission mechanism is installed in the middle of the cavity 214. When the filter device 12 is installed in the middle of the cavity 214, the filter device 12 causes the actuation mechanism 25 to move to a second position or move between a first position and a second position through the transmission mechanism.

[0043] In one embodiment, when the actuation mechanism 25 is in the first position, the mechanical switch 221c of the first mechanical valve 221 does not abut against the actuation rod 252. Since the first mechanical valve 221 is in the normally closed state, the first mechanical valve 221 is in the closed state at this time.

[0044] In one embodiment, the diameter of the first end 252a of the actuating rod 252 is larger than that of the second end 252b. When the actuating mechanism 25 is in the first position, the first mechanical valve 221 is in the closed position, and when the actuating mechanism 25 is in the second position, the first mechanical valve 221 is opened.

[0045] In one embodiment, the extension direction of the actuating rod 252 is the same as the extension direction of the axis X of the cylindrical second main body portion 213.

[0046] In one embodiment, such as Figure 4 As shown, Figure 4 This is a rear view of the mounting mechanism 20 of the filter device 12. Three mechanical valves 221, 231, and 241 are evenly arranged on the second main body 213. Specifically, the angle between the centerlines of the three mechanical valves 221, 231, and 241 is 120 degrees. For example, the angle α between the centerline a of the first mechanical valve 221 and the centerline b of the second mechanical valve 231 is 120 degrees, the angle between the centerline b of the second mechanical valve 231 and the centerline c of the third mechanical valve 241 is also 120 degrees, and the angle between the centerline c of the third mechanical valve 241 and the centerline a of the first mechanical valve 221 is also 120 degrees.

[0047] In one embodiment, the three elastic mechanisms 253 are also evenly distributed relative to the axis of the second main body 213, i.e., like the three mechanical valves 221, 231, and 241, the included angle between each pair of the three elastic mechanisms 253 is 120 degrees. The actuating rod 252 is located in the middle of the three elastic mechanisms 253, so that the actuating mechanism 25 is more stable when moving between the first and second positions and will not have eccentric movement. In one embodiment, the extension lines of the center lines a, b, and c of the three mechanical valves 221, 231, and 241 pass through the three elastic mechanisms 253.

[0048] In one embodiment, the movement direction of the mechanical switch 221c of the first mechanical valve 221 is perpendicular to the movement direction of the push rod 252. Specifically, the movement direction of the push rod 252 is the same as the extension direction of the axis X of the second main body 213, and the movement direction of the mechanical switch 221c is perpendicular to the movement direction of the push rod. In other embodiments, the movement direction of the push rod 252 may not be perpendicular to the movement direction of the mechanical switch 221c; for example, the movement direction of the push rod 252 may not be the same as the movement direction of the mechanical switch 221c.

[0049] In one embodiment, the three mechanical valves 221, 231, and 241 can be replaced by solenoid valves or other electrically controlled valves. After determining whether the filter device 12 is installed in place, a control signal is sent to the three valves to control the opening or closing of the three valves.

[0050] In one embodiment, such as Figure 5 As shown, in order to more intuitively demonstrate the structure of the installation mechanism in this embodiment, Figure 5 Since the main body of the installation mechanism is not shown, it can be understood that this embodiment may have and Figure 2a The main body 21 is shown. In this embodiment, the actuation mechanism 35 of the installation mechanism includes a base 351, a push rod 352, an elastic mechanism 353, and multiple push rods 361, 362, and 363, wherein the push rod 352, the elastic mechanism 353, and the multiple push rods 361, 362, and 363 are all connected to the base 351. When the filter device 12 is not installed in place, that is, when the filter device 12 is not abutting against the actuation rod 352, the deformation of the elastic mechanism 353 keeps the actuation mechanism 35 in a first position. In the first position, the first push rod 361 presses against the mechanical switch 321c of the first mechanical valve 321, the second push rod 362 presses against the mechanical switch 331c of the second mechanical valve 331, and the third push rod 363 presses against the mechanical switch 341c of the third mechanical valve 341, so that the three mechanical valves 321 are in a closed state.

[0051] When the filter device 12 is installed in place, that is, when the filter device 12 is installed at the bottom of the cavity of the first main body, the filter device 12 presses against the free end of the push rod 352, causing the actuation mechanism 35 to move to the second position. When the actuation mechanism 35 is in the second position, the first, second, and third push rods 361, 362, and 363 no longer press against the mechanical switches 321c, 331c, and 341c, and the mechanical switches 321c, 331c, and 341c are actuated, thereby opening the first mechanical valve 321, the second mechanical valve 331, and the third mechanical valve 341, thus enabling fluid communication between the first mechanical valve 321, the second mechanical valve 331, and the third mechanical valve 341 and the flow path within the filter device 12. In one embodiment, there are two mechanical valves, which respectively seal the two flow paths of the filter device 12. In this embodiment, the movement direction of the push rod 352 is the same as the movement direction of the mechanical switches 321c, 331c, and 341c.

[0052] In one embodiment, such as Figure 6aAs shown in Figure 6b, the mounting mechanism 40 of the filter device 12 includes a main body 41, an actuation mechanism 45, and a valve assembly 42. The main body 41 includes a cavity 414 for accommodating the filter device 12, and the bottom 415 of the main body 41 has a plurality of holes 411. The actuation mechanism 45 includes a base 451, a push rod 452, and an elastic mechanism 453. One end of the push rod 452 is fixedly connected to the base 451, and the other end of the push rod 452 is a free end that extends into the cavity 414 of the main body 41.

[0053] Valve assembly 42 is equivalent to a mechanical valve. Valve assembly 42 includes a valve body 421 and a valve stem 422. The valve body 421 contains multiple pipes 423, including an inlet pipe 423a and an outlet pipe 423b. The valve stem 422 opens or closes the connection between the outlet pipe 423b and the orifice 411 of at least one of the multiple pipes 423. An elastic mechanism 453 is sleeved on the valve stem 422, with one end of the elastic mechanism 453 abutting against the valve body 421 and the other end abutting against the valve stem 422.

[0054] The mounting mechanism 40 also includes a first seal 424 for sealing the valve stem 424 and the valve body 421, and a second seal 425 for sealing the valve body 421 and the bottom 415 of the body portion 41. In one embodiment, the first seal 424 and the second seal 425 are O-rings.

[0055] When the filter device 12 is not installed in place, i.e. Figure 6a In the state shown, the filter device 12 is not in contact with the push rod 452. The elastic force generated by the deformation of the elastic mechanism 453 puts the actuation mechanism 45 in the first position. When the actuation mechanism 45 is in the first position, the end face of the valve stem 422 abuts against the outer surface of the bottom 415 of the main body 41, thereby closing the valve of the valve assembly 42. That is, the valve stem 422 blocks the fluid communication between the pipeline 423 and the hole 411, so that the gas in the pipeline 423 cannot enter the filter device 12.

[0056] like Figure 6b As shown, after the filter device 12 is installed in place, the bottom of the filter device 12 presses against the push rod 452, so that the actuation mechanism 45 moves to the second position along the E direction. The movement of the actuation mechanism 45 drives the valve stem 424 to move along the E direction, so that the end face of the valve stem 424 separates from the outer surface of the bottom of the main body 41, thereby opening the valve of the valve assembly 42. The pipeline 423 is in fluid communication with the hole 411 and the air inlet 12a. The gas enters the flow path inside the filter device 12 through the pipeline 423, the hole 411 of the bottom 415 of the main body 41 and the air inlet 12a of the filter device 12.

[0057] In some embodiments, the filter device 12 may be a three-chamber filter device or a two-chamber filter device. The three-chamber filter device has three flow path passages and is used in conjunction with a three-chamber tube assembly and a three-chamber sleeve capable of gas-tight sealing. Figure 7 The diagram illustrates a usage scenario for the three-chamber filter device 120. The three-chamber filter device 120 is fluidly connected to the three-chamber sleeve 141 via a pipe assembly 132. The three-chamber filter device 120 includes three flow paths 121, 123, and 125. The first flow path 121 is fluidly connected to the gas return chamber 141a of the three-chamber sleeve 141 via the first pipe 132a of the pipe assembly 132. Gas returning from the sleeve 141 returns to the air pump 15 in the main unit 11 via the first flow path 121. The gas in the first flow path 121 and the second flow path 123 form a cycle.

[0058] The second flow path 123 is in fluid communication with the high-pressure gas chamber 141b of the three-lumen sleeve 141 through the second pipe 132b of the pipe group 132, and injects high-pressure gas into the high-pressure gas chamber 141b to form a gaseous sealing area in the sleeve 141. The gaseous sealing area can prevent the gas in the abdominal cavity P from overflowing from the proximal end of the sleeve 141.

[0059] The third flow path 125 is in fluid communication with the gas injection / detection chamber 141c of the three-lumen sleeve 141 through the third pipe 132c of the pipe group 132. The main unit 11 of the gas blowing device injects gas into the gas injection / detection chamber 141a through the first flow path 121 to form an artificial pneumoperitoneum in the patient's abdominal cavity P, and periodically detects the gas pressure in the gas injection / detection chamber 141a.

[0060] The three-chamber filtration device 120 includes a first filter element 124 and a second filter element 126. The first filter element 124 is disposed on the second flow path 124 and is used to filter the high-pressure gas in the second flow path 124. The second filter element 126 is disposed on the first flow path 121 and is used to filter the return gas in the first flow path 125. For example, in the smoke exhaust mode, the smoke generated during the operation returns to the first flow path 121 in the filtration device 120 through the gas return chamber 141c, and the second filter element 126 filters the smoke in the first flow path 121.

[0061] The two-chamber filter device has two flow paths and is used in conjunction with a two-chamber tube assembly. For example, the two-chamber filter device may only have a first flow path and a second filtration path of the three-chamber filter device 120, without a third flow path.

[0062] In one embodiment, the valve assembly 42 has two valve stems 422. One valve stem 422 controls the connection or disconnection between the first flow path 121 and the pipe 423 within the valve assembly 42, and the other valve stem 422 controls the connection or disconnection between the second flow path 124 and the pipe 423 within the valve assembly 42. The connection or disconnection between the third flow path 125 and the air passage within the main unit 11 is controlled by a solenoid valve. Using a mechanical valve assembly 42 to control the first and second flow paths 121 and 124 eliminates the need for additional detection devices to check whether the filter device 12 is installed correctly, and for a controller to control the connection between the air passage within the main unit 11 and the first and second flow paths 123 and 125. Instead, once the filter device 12 is installed correctly, the valve assembly 42 opens accordingly, making the control system simpler and more stable to design.

[0063] In one embodiment, the filter device is provided with an identification component for identifying whether the filter device is a three-chamber filter device or a two-chamber filter device. The three-chamber filter device has three flow path passages and is used in conjunction with a three-chamber tube assembly; the two-chamber filter device has two flow paths and is used in conjunction with a two-chamber tube assembly.

[0064] like Figure 8a As shown, when the filter device is a three-chamber filter device 120, the identification component 121 has a first identification block 121a and a second identification block 121b extending along the axial direction of the filter device 12. The length of the first identification block 121a along the axial direction of the filter device 12 is greater than the length of the second identification block 121b, that is, the ends of the first identification block 121a and the second identification block 121b are not aligned. After the three-chamber filter device 120 is installed in the mounting mechanism and in the mounting position, the longer first identification block 121a presses against the first pin 513 to trigger the first micro switch 52, and the shorter second identification block 121b does not contact the second pin 511, so that the second pin 511 does not trigger the second micro switch 523. The controller identifies the filter device 120 as a three-chamber filter device based on the switching state of the first micro switch 521 and the second micro switch 523.

[0065] Figure 8b As shown, when the filter device is a two-chamber filter device 130, the identification component 131 is roughly rectangular in shape with its ends being basically flush. It does not have the first identification block 121a and the second identification block 121b of different lengths of the three-chamber identification component 121. Therefore, after the two-chamber filter device 130 is installed into the mounting mechanism and in place, the identification component 131 simultaneously presses against the first pin 511 and the second pin 513. The first pin 511 and the second pin 513 simultaneously trigger the first micro switch 521 and the second micro switch 523, respectively. The controller identifies the filter device 130 as a two-chamber filter device based on the switching states of the first micro switch 521 and the second micro switch 523.

[0066] It is understood that in some embodiments, a three-chamber filter device may have a flush-end identification component. After the filter device is installed, this identification component simultaneously triggers two microswitches. When the controller detects the signals from both microswitches, it determines that the filter device is a three-chamber filter device. A two-chamber filter device may have a non-flush-end identification component. After the filter device is installed, this identification component triggers only one of the two microswitches. When the controller detects the signal from only one microswitch, it determines that the filter device is a two-chamber filter device.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A gas blowing device, characterized in that, include: A filtration device, which includes a flow path for gas to pass through; The mounting mechanism includes a main body, a valve assembly, and an actuation mechanism, which can be pushed by the filter device to move between a first position and a second position; When the filter device does not contact the actuation mechanism, the actuation mechanism is in the first position, the actuation mechanism does not actuate the valve assembly, the valve assembly is in the closed state, and the valve assembly is not connected to the flow path; When the filter device is installed into the cavity of the main body and presses against the actuation mechanism to put the actuation mechanism in the second position, the actuation mechanism actuates the valve assembly to open the valve assembly and connect the valve assembly to the flow path; The valve assembly includes a mechanical switch, and the actuation mechanism includes a base, a push rod, and a push rod. The push rod and the push rod are connected to the base, and one end of the push rod extends into the cavity. When the actuation mechanism is in the first position, the push rod abuts against the mechanical switch to close the valve assembly. When the actuation mechanism is in the second position, the push rod is moved by the filtering device to actuate the mechanical switch, thereby opening the valve assembly; The gas blowing device also includes a main unit and an air pump, the air pump being located inside the main unit, the filter device including a first flow path and a second flow path, the gas in the first flow path entering the second flow path after passing through the air pump, and the valve assembly being configured to control the opening or closing of the first and second flow paths with the air passage inside the main unit. The filter device is equipped with an identification component for identifying whether it is a three-chamber filter device or a two-chamber filter device. Both the two-chamber filter device and the three-chamber filter device have a first flow path and a second flow path. The first flow path is connected to the gas return chamber of the sleeve, and the second flow path is connected to the high-pressure gas chamber of the sleeve. The gas in the first flow path and the second flow path forms a cycle. The three-chamber filter device also includes a third flow path, which is connected to the gas injection / detection chamber of the sleeve.

2. The gas blowing device as described in claim 1, characterized in that, The displacement direction of the push rod is the same as the movement direction of the mechanical switch.

3. The gas blowing device as described in claim 1, characterized in that, The extension direction of the push rod is the same as the axial direction of the filter device.

4. A gas blowing device, characterized in that, include: A filtration device, which includes a flow path for gas to pass through; The mounting mechanism includes a main body, a valve assembly, and an actuation mechanism, which can be pushed by the filter device to move between a first position and a second position; When the filter device does not contact the actuation mechanism, the actuation mechanism is in the first position, the actuation mechanism does not actuate the valve assembly, the valve assembly is in the closed state, and the valve assembly is not connected to the flow path; When the filter device is installed into the cavity of the main body and presses against the actuation mechanism to put the actuation mechanism in the second position, the actuation mechanism actuates the valve assembly to open the valve assembly and connect the valve assembly to the flow path; The valve assembly includes a pipe and a valve stem, the valve stem being used to open or close the pipe; The actuation mechanism includes a base and a push rod. One end of the push rod and the valve rod are connected to the base, and the other end of the push rod extends into the cavity. When the actuation mechanism is in the second position, the filter device presses against the push rod to open the pipeline at the other end of the valve rod. The gas blowing device also includes a main unit and an air pump, the air pump being located inside the main unit, the filter device including a first flow path and a second flow path, the gas in the first flow path entering the second flow path after passing through the air pump, and the valve assembly being configured to control the opening or closing of the first and second flow paths with the air passage inside the main unit. The filter device is equipped with an identification component for identifying whether it is a three-chamber filter device or a two-chamber filter device. Both the two-chamber filter device and the three-chamber filter device have a first flow path and a second flow path. The first flow path is connected to the gas return chamber of the sleeve, and the second flow path is connected to the high-pressure gas chamber of the sleeve. The gas in the first flow path and the second flow path forms a cycle. The three-chamber filter device also includes a third flow path, which is connected to the gas injection / detection chamber of the sleeve.

5. The gas blowing device as described in claim 4, characterized in that, The bottom of the main body has a hole for connecting the pipeline and the flow path. When the actuation mechanism is in the first position, the valve stem closes the connection between the pipeline and the hole.

6. The gas blowing device as described in claim 5, characterized in that, The actuation mechanism further includes a spring sleeved on the valve stem. When the actuation mechanism is in the first position, the spring deforms to cause the valve stem to abut against the bottom of the main body, and the valve stem closes the connection between the pipeline and the orifice.

7. A gas blowing device, characterized in that, include: A filtration device, which includes a flow path for gas to pass through; The mounting mechanism includes a main body, a valve assembly, and an actuation mechanism, which can be pushed by the filter device to move between a first position and a second position; When the filter device does not contact the actuation mechanism, the actuation mechanism is in the first position, the actuation mechanism does not actuate the valve assembly, the valve assembly is in the closed state, and the valve assembly is not connected to the flow path; When the filter device is installed into the cavity of the main body and presses against the actuation mechanism to put the actuation mechanism in the second position, the actuation mechanism actuates the valve assembly to open the valve assembly and connect the valve assembly to the flow path; The actuation mechanism includes a push rod and an elastic mechanism. When the actuation mechanism is in a first position, the elastic mechanism deforms to bring the mechanical switch of the valve assembly close to or abut against the first end of the push rod. When the actuation mechanism is in a second position, the filter device pushes the push rod to move so that the second end of the push rod abuts against the mechanical switch, thereby actuating the mechanical switch and opening the valve assembly. The gas blowing device also includes a main unit and an air pump, the air pump being located inside the main unit, the filter device including a first flow path and a second flow path, the gas in the first flow path entering the second flow path after passing through the air pump, and the valve assembly being configured to control the opening or closing of the first and second flow paths with the air passage inside the main unit. The filter device is equipped with an identification component for identifying whether it is a three-chamber filter device or a two-chamber filter device. Both the two-chamber filter device and the three-chamber filter device have a first flow path and a second flow path. The first flow path is connected to the gas return chamber of the sleeve, and the second flow path is connected to the high-pressure gas chamber of the sleeve. The gas in the first flow path and the second flow path forms a cycle. The three-chamber filter device also includes a third flow path, which is connected to the gas injection / detection chamber of the sleeve.

8. The gas blowing device as described in claim 7, characterized in that, The direction of movement of the push rod is perpendicular to the direction of movement of the mechanical switch.

9. The gas blowing device as described in claim 7, characterized in that, The diameter of the second end of the push rod is larger than the diameter of its first end.

10. The gas blowing device as claimed in claim 7, characterized in that, The extension direction of the push rod is the same as the axial direction of the filter device.

11. The gas blowing device according to any one of claims 1-10, characterized in that, The gas blowing device further includes the sleeve and the tube assembly. The sleeve is connected to the filter device through the tube assembly. Gas in the second flow path is injected into the sleeve through the tube assembly to form a gaseous seal in the sleeve. Gas in the sleeve is returned to the first flow path through the tube assembly.

12. The gas blowing device as claimed in claim 11, characterized in that, The mounting mechanism is equipped with two microswitches. When the filter device is a three-chamber filter device and the actuation mechanism is in the second position, the identification component triggers only one of the two microswitches. When the filter device is a two-chamber filter device and the actuation mechanism is in the second position, the identification component triggers both microswitches simultaneously.

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