Multifunctional three-way connector

Abstract

The invention discloses a multifunctional three-way connector, which belongs to the technical field of air pipeline connection and comprises a three-way valve, a mode switching mechanism for switching air channel channels is arranged in the three-way valve, and an air channel closing mechanism for closing redundant air channels is arranged in the middle section of an air channel of the mode switching mechanism. The mode switching mechanism is matched with the gas path switching mechanism, communication modes of three basic gas paths, namely a single-pass mode, a double-pass mode and a three-pass mode are achieved, and in the single-pass mode and the double-pass mode, the communication modes can be further expanded into a one-to-two mode, a one-to-three mode and a two-to-three communication mode through the gas path switching mechanism, so that the adaptability and functionality of the communicating vessel are remarkably improved, and the communicating vessel is suitable for large-scale popularization and application. According to the multi-mode switching air channel, the requirement for diversified and multifunctional design is met, the air channel sealing mechanism is matched with the three-mode switching air channel, accurate setting can be conducted according to specific modes in all the modes, non-conducting air channels are effectively isolated, active extrusion sealing of the non-conducting air channels is achieved, and blow-by, turbulent flow and dust invasion are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air pipeline connection, in particular to a multifunctional three-way connector. Background Art

[0002] Currently, the input and output ends of connectors on the market mostly use one-to-one, two-to-two, and three-to-three modes for air connection, and airtightness is achieved by adding sealing rings at the male and female ends.

[0003] However, this type of connector cannot achieve intercommunication between single-tube, double-tube or triple-tube connectors. When in use, the input and output ends of the connector must be used in a one-to-one, two-to-two and three-to-three manner, which makes it more troublesome to use and the gas connection is cumbersome. At the same time, the female end and the male end must be replaced to make connections after switching between modes, which is not conducive to the diversified and multifunctional design of the product. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a multifunctional three-way connector.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A multifunctional three-way connector includes a three-way valve, the three-way valve is provided with a three-way air path male end and a three-way air path female end, the three-way valve is provided with a mode switching mechanism for switching air path channels, and the middle section of the air path of the mode switching mechanism is provided with an air path sealing mechanism for sealing redundant air paths; The mode switching mechanism includes a switching drive assembly symmetrically arranged on both sides of the three-way valve, the switching drive assembly is provided with a switching sleeve rotatably connected to the inner wall of the three-way valve, and the switching sleeve is provided with a three-mode switching air channel, and the two ends of the three-mode switching air channel are respectively connected to the male end and the female end of the three-way air channel; The air path sealing mechanism includes multiple air path blocking and sealing plugs arranged in the three-mode switching air channel. Two of the air path blocking and sealing plugs arranged opposite to each other form a group, and each group of air path blocking and sealing plugs is provided with a blocking male head and a blocking female head on opposite sides.

[0006] Preferably, an observation window is provided on the three-way valve, a switching indicator bar is provided on the surface of the switching sleeve, and the three-way valve observes the switching indicator bar through the observation window.

[0007] Preferably, the switching drive assembly includes a driving column symmetrically arranged in the three-way valve, the two driving columns are respectively fixed to the two ends of the switching sleeve, the driving column is slidably connected to the pressing column through a rotating driving groove, and a reset spring is arranged between the driving column and the pressing column.

[0008] Preferably, a three-way dividing block is fixed inside the switching sleeve, and the interior of the switching sleeve is divided into three independent switching chambers by the three-way dividing block.

[0009] Preferably, the three-mode switching air channel consists of a single air channel, a double air channel and a three-way air channel symmetrically connected to the switching sleeve, the single air channel is connected to a single three-way air channel male end and a three-way air channel female end, the double air channel is connected to two three-way air channel male ends and a three-way air channel female end, and the three-way air channel is connected to three three-way air channel male ends and a three-way air channel female end.

[0010] Preferably, the arrangement of the air path blocking sealing plug in the three-mode switching airway is divided into three ways according to the different modes, and the three different arrangement ways are arranged in the single-way airway, the double-way airway and the triple-way airway respectively, and the air path blocking sealing plug is provided with permanent magnets that repel each other; The first arrangement is as follows: in a single airway, the permanent magnet is arranged on the opposite side of each group of the airway blocking and sealing plugs in the central area of the airway, and the airway blocking and sealing plugs located in the edge area of the airway are fixedly connected to the single airway; The second arrangement is as follows: in a double airway, the permanent magnets are arranged on opposite sides of each set of the airway blocking and sealing plugs in the central area of the airway, and on opposite sides of the single airway and the airway blocking and sealing plug in the edge area of the airway. The arrangement of each set of the airway blocking and sealing plugs in the central area of the airway is the same as the first arrangement. The third setting method is: in the three-way air duct, each group of the air path blocking sealing plugs is fixedly arranged in the three-way air duct, and the blocking male heads and the blocking female heads between each group of the air path blocking sealing plugs are in an open state.

[0011] Preferably, limit blocks are provided in the single air channel and the dual air channel, and the air path blocking sealing plug slidably connected to the three-mode switching air channel limits the sliding distance by the limit blocks.

[0012] Preferably, both the single-channel and dual-channel output ends are provided with an air path switching mechanism, and the air path switching mechanism includes a switching plate slidably connected to the single-channel output end, and an air path switching through hole is opened on the switching plate. The switching plate changes the position of the air path switching through hole and switches the number of air paths at the single-channel output end through a sealing drive assembly.

[0013] Preferably, the sealing drive assembly includes a driving knob rotatably arranged on the three-way valve and a rotating column rotatably arranged at the output end of the single airway, a positioning magnet is arranged between the driving knob and the rotating column, a magnetic strip that attracts the switching plate is arranged on the rotating column, and a switching edge is also arranged on the rotating column.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By equipping the switching sleeve and the mode switching mechanism of the three-mode switching air channel with the air path switching mechanism, the three basic air path connection modes of single-way, double-way and three-way are realized. In the single-way and double-way modes, the air path switching mechanism can be further expanded to one-to-two, one-to-three and two-to-three connection modes, which significantly improves the adaptability and functionality of the manifold, making it meet the requirements of diversified and multifunctional design and suitable for the control process of complex air paths.

[0015] 2. By equipping the air path sealing mechanism with air path blocking plugs in different settings and cooperating with the three-mode switching air channel, it can be precisely set according to the specific mode in each mode, effectively isolate the non-conducting air path, and realize active extrusion and closure of the non-conducting air path, avoiding cross-flow, turbulence and dust intrusion. In addition, the air path sealing process of all mode switching is completed in the sealing structure, ensuring the sealing integrity of the overall valve.

[0016] 3. By using a switching drive assembly equipped with a driving column and a pressing column in conjunction with a switching sleeve, when the pressing columns symmetrically arranged on both sides of the valve body are pressed, the switching sleeve can be driven to rotate in different directions to achieve mode switching. A single press can complete the mode switching, making the operation more intuitive and simple.

[0017] 4. By combining the rotating column equipped with a magnetic strip with the switching plate, the mechanism can be stably maintained in the preset position of the extrusion mode when it is not in operation, preventing incorrect switching due to vibration or slight external force, ensuring the stability of the air path state, and in the operating state, by rotating the external drive knob, the rotating column is driven to rotate, so that the switching edge pushes the switching plate to overcome the magnetic force and move, accurately aligning with the required air hole switching path, realizing the switching of the expansion mode, achieving convenient operation and allowing quick separation when the two are not in position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a multifunctional three-way connector proposed by the present invention; Figure 2 This is an overall structural assembly view of a multifunctional three-way connector proposed by the present invention; Figure 3 This is a structural assembly view of a switching drive component in a multifunctional three-way connector proposed by the present invention; Figure 4 This is a schematic diagram of the internal structure of the cross section of the three-way air channel and the switching sleeve in a multifunctional three-way connector proposed by the present invention; Figure 5 This is a schematic diagram of the internal structure of a switching sleeve in a multifunctional three-way connector proposed by the present invention from a second perspective; Figure 6This is a structural schematic diagram of a first arrangement of a sealing plug for blocking an air passage in a single air passage in a multifunctional three-way connector proposed by the present invention; Figure 7 This is a structural schematic diagram of a second arrangement of a sealing plug for blocking an air path in a dual-air channel in a multifunctional three-way connector proposed by the present invention; Figure 8 This is a schematic diagram of the structure of a sealing plug for blocking the inner air passage of a three-way air channel in a multifunctional three-way connector proposed by the present invention; Figure 9 This is a structural schematic diagram of a switching sleeve, a three-mode switching airway, and an airway switching mechanism in a multifunctional three-way connector proposed by the present invention; Figure 10 This is a structural schematic diagram of the switching plate and gas path switching mechanism in a multifunctional three-way connector proposed by the present invention.

[0019] Figure markings: 1. three-way valve; 11. three-way air path male end; 12. three-way air path female end; 2. switching sleeve; 21. switching indicator strip; 22. three-way separator block; 23. switching chamber; 3. three-mode switching air duct; 31. single air duct; 32. double air duct; 33. three-way air duct; 4. air path blocking plug; 41. blocking male head; 42. blocking female head; 43. permanent magnet; 5. driving column; 51. rotating driving groove; 52. pressing column; 53. reset spring; 6. limiting block; 7. switching plate; 71. air path switching through hole; 8. driving knob; 81. positioning magnet; 9. rotating column; 91. magnetic strip; 92. switching edge. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0023] Example, see Figures 1 to 10 A multifunctional three-way connector includes a three-way valve 1, which is provided with a three-way air path male end 11 and a three-way air path female end 12. The three-way valve 1 is provided with a mode switching mechanism for switching the air path channel. The middle section of the air path of the mode switching mechanism is provided with an air path sealing mechanism for sealing the redundant air path. It should be noted that the three-way air path male end 11 adopts three-way input, the three-way air path female end 12 adopts three-way output, and the three-way air path male end 11 and the three-way air path female end 12 are sealed and connected to the three-way valve 1 by plugging, which is the sealing connection technology of the existing three-way connector and will not be described in detail here.

[0024] The mode switching mechanism includes a switching drive assembly symmetrically arranged on both sides of the three-way valve 1. The switching drive assembly is provided with a switching sleeve 2 rotatably connected to the inner wall of the three-way valve 1. The switching sleeve 2 is provided with a three-mode switching air channel 3. The two ends of the three-mode switching air channel 3 are respectively connected to the three-way air channel male end 11 and the three-way air channel female end 12; Furthermore, an observation window is provided on the three-way valve 1, and a switching indicator bar 21 is provided on the surface of the switching sleeve 2. The three-way valve 1 can observe the switching indicator bar 21 through the observation window, so that when the switching sleeve 2 is driven to rotate by the switching drive assembly, the switching indicator bar 21 can be observed through the observation window to know which communication mode the switching sleeve 2 is in at this time; Furthermore, a three-way partition block 22 is fixed in the switching sleeve 2, and the switching sleeve 2 is divided into three independent switching chambers 23 by the three-way partition block 22, and the cross section of the switching chamber 23 is set to be circular. When the air passages in other modes of the three-mode switching air passage 3 are not connected with the three-way air passage male end 11 and the three-way air passage female end 12, the unconnected air passages are closed by the rotating part of the inner wall of the three-way valve 1 and the three-mode switching air passage 3, thereby avoiding disorder of the conducting air passages and affecting the output of the three-way valve 1; Furthermore, the three-mode switching air channel 3 is composed of a single air channel 31, a double air channel 32 and a three-way air channel 33 symmetrically connected to the switching sleeve 2. The single air channel 31 is connected to a single three-way air channel male end 11 and a three-way air channel female end 12, the double air channel 32 is connected to two three-way air channel male ends 11 and three-way air channel female ends 12, and the three-way air channel 33 is connected to three three-way air channel male ends 11 and three-way air channel female ends 12, so that a single-way mode, i.e., a one-to-one connection mode, can be achieved when the single air channel 31 is connected, a double-way mode, i.e., a two-to-two connection mode, can be achieved when the double air channel 32 is connected, and a three-way mode, i.e., a three-to-three connection mode, can be achieved when the three air channels 33 are connected. It should be noted that: when the switching sleeve 2 is driven to rotate to the desired connection mode by the switching drive assembly, the air channel of the three-mode switching air channel 3 is connected with the corresponding three-way air path male end 11 and the three-way air path female end 12, so that the input end and the output end of the three-way valve 1 can be connected to the air path according to the desired connection mode, thereby achieving the effect of convenient switching of the connection mode.

[0025] like Figure 2 and Figure 3 As shown, the switching drive assembly includes drive columns 5 symmetrically arranged in the three-way valve 1. The two drive columns 5 are respectively fixed to the two ends of the switching sleeve 2. The drive columns 5 are slidably connected to the pressing columns 52 through the rotation drive grooves 51. A return spring 53 is provided between the drive columns 5 and the pressing columns 52. It should be noted that a movable latch is plugged into the pressing column 52 and is slidably connected to the rotation drive groove 51. The drive column 5 is connected to the three-way valve 1 in a sealed rotation connection. When the pressing column 52 is squeezed, the drive column 5 can be driven to rotate by the movable latch. When the squeezing is released, the elastic force of the return spring 53 squeezes the pressing column 52 out of the three-way valve 1, so that it returns to its original position and waits for the next squeezing. Based on the above, during the movement of the pressing column 52, the movable pin slides along the inner wall of the cyclically arranged rotation drive groove 51, so that the drive column 5 can be intermittently rotated along a rotation direction, and the rotation drive groove 51 slide path on the pressing column 52 symmetrically arranged above and below is also symmetrically arranged, so that when the pressing column 52 is squeezed on both sides of the three-way valve 1, the switching sleeve 2 can be driven to rotate along different rotation directions. There is no need to squeeze the pressing column 52 multiple times to complete the mode switching, thereby realizing convenient switching of the connection mode between independent air paths.

[0026] like Figures 4 to 8 As shown, the air path sealing mechanism includes a plurality of air path blocking sealing plugs 4 arranged in the three-mode switching air channel 3. Two air path blocking sealing plugs 4 arranged opposite to each other form a group. A blocking male connector 41 and a blocking female connector 42 are provided on opposite sides of each group of air path blocking sealing plugs 4. It should be noted that: when the air path blocking sealing plug 4 slidingly set in the three-mode switching air channel 3 slides in the approaching direction, the relatively set blocking male head 41 and the blocking female head 42 can be used to close the remaining unnecessary air paths between the three-way air path male end 11 and the three-way air path female end 12 in the selected connection mode, thereby realizing the closed locking cooperation between the independent air paths.

[0027] Further, if Figure 4 、 Figure 6 and Figure 7 As shown, the arrangement of the air path blocking sealing plug 4 in the three-mode switching air channel 3 is divided into three ways according to the different modes, and the three different arrangement methods are arranged in the single air channel 31, the double air channel 32 and the triple air channel 33 respectively. The air path blocking sealing plug 4 is provided with permanent magnets 43 that repel each other, and limit blocks 6 are provided in the single air channel 31 and the double air channel 32. The air path blocking sealing plug 4 slidably connected to the three-mode switching air channel 3 is limited in sliding distance by the limit blocks 6; The first arrangement is as follows: in the single airway 31, the permanent magnets 43 are arranged on the opposite side of each group of airway blocking and sealing plugs 4 in the central area of the airway, and the airway blocking and sealing plugs 4 in the edge area of the airway are fixedly connected to the single airway 31; It should be noted that when a single input end of the three-way air path male end 11 is connected to an existing gas compression device, high-pressure gas is blown into the input end of the single air path 31 connected to this path through the gas blowing of the single input end, and the gas path blocking seal plugs 4 arranged opposite to each other are driven by the gas to separate from each other, thereby releasing the blocking state between the blocking male end 41 and the blocking female end 42, so that the air path in the single air path 31 is input into the switching sleeve 2 through the input end, and is separated from each other at the output end of the symmetrically arranged single air path 31 by a group of air path blocking seal plugs 4 communicating with this air path, thereby realizing one-to-one air path communication in the single-way mode; Based on the above, when a single input end of the three-way air path male end 11 is blown into the input end of the single air channel 31, the air path blocking sealing plug 4 corresponding to this air path can be squeezed toward the phase separation direction to make the oppositely arranged blocking male end 41 and blocking female end 42 overlap, thereby sealing the unconnected air path, thereby preventing the other unconnected air paths from being in a connected state for a long time in the single-way mode, so that dust and impurities in the air enter the air path, polluting the air path and affecting the subsequent use of the air path; Based on the above, when the edge gas path is open in the single-pass mode, since the edge gas path blocking sealing plug 4 is fixed to the edge of the single-pass air channel 31, the sliding distance of the other edge gas path blocking sealing plug 4 arranged opposite to the edge gas path blocking sealing plug 4 is twice the sliding distance of the gas path blocking sealing plug 4 arranged in the central area of the air channel; Furthermore, based on the above, the blocking male head 41 and the blocking female head 42 are arranged at the gas path return flow of each group of gas path blocking and sealing plugs 4 arranged opposite to each other. Under the action of the high-pressure gas in the connected gas path, the gas path blocking and sealing plug 4 after the gas path expansion process drives the gas path blocking and sealing plugs 4 of the other gas paths to form a closed environment, and the unused gas path will not be connected due to the reflux gas path, resulting in unstable gas pressure and turbulence in the connected gas path, thereby achieving the purpose of stabilizing the gas path; The second arrangement is as follows: in the dual air passages 32, the permanent magnets 43 are arranged on opposite sides of each set of air passage blocking and sealing plugs 4 in the central area of the air passages, and on opposite sides of the single air passage 31 and the air passage blocking and sealing plugs 4 in the edge area of the air passages. The arrangement of each set of air passage blocking and sealing plugs 4 in the central area of the air passages is the same as that in the first arrangement. It should be noted that when the two output ends of the three-way gas path male end 11 are connected to the existing gas compression equipment, the two gas paths are connected at this time, and the gas path blocking sealing plugs 4 in the unconnected gas path are squeezed by the gas path blocking sealing plugs 4 in the two connected gas paths, so that the unconnected gas path is in a completely closed state, so that the gas path is not affected by dust, and the connected gas path remains stable, avoiding the situation where the gas pressure in the connected gas path is unstable and turbulent; The third arrangement is as follows: in the three-way air passage 33, each set of air path blocking sealing plugs 4 is fixedly arranged in the three-way air passage 33, and the blocking male connector 41 and the blocking female connector 42 between each set of air path blocking sealing plugs 4 are in an open state. The blocking male connector 41 and the blocking female connector 42 may not be arranged between the air path blocking sealing plugs 4 fixedly arranged in the three-way air passage 33; It should be noted that: in the three-way air channel 33, each air channel is in a conducting state, and each air channel is independent of each other through the fixed air channel blocking and sealing plugs 4, and will not interfere with each other.

[0028] like Figure 9 and Figure 10 As shown, the output ends of the single air channel 31 and the dual air channels 32 are both provided with an air path switching mechanism, which includes a switching plate 7 slidably connected to the output end of the single air channel 31. The switching plate 7 is provided with an air path switching through hole 71. The switching plate 7 changes the position of the air path switching through hole 71 and switches the number of air paths connected at the output end of the single air channel 31 through a sealing drive assembly. It should be noted that: at the output ends of the single air channel 31 and the dual air channel 32, the air channel switching mechanism can also convert the one-to-one connection mode in the single air channel 31 into a one-to-two or one-to-three connection mode, and convert the two-to-two connection mode in the dual air channel 32 into a two-to-three connection mode; Based on the above, the air path switching through hole 71 on the switching plate 7 in the single air duct 31 is composed of a pair of one connecting holes, a pair of two through holes and a pair of three through holes, and the air path switching through hole 71 on the switching plate 7 in the double air duct 32 is composed of two pairs of two through holes and two pairs of three through holes.

[0029] Furthermore, the sealing drive assembly includes a driving knob 8 rotatably provided on the three-way valve 1 and a rotating column 9 rotatably provided at the output end of the single airway 31. A positioning magnet 81 is provided between the driving knob 8 and the rotating column 9. The rotating column 9 is provided with a magnetic strip 91 that attracts the switching plate 7. The rotating column 9 is also provided with a switching edge 92. A further advantage of adopting the above method is that by turning the driving knob 8, the rotating column 9 can be driven to rotate, so that the switching edge 92 driven by the required air path switching hole 71 rotates toward the switching plate 7, driving the switching plate 7 to move, thereby connecting the required air path switching hole 71 with the air path, realizing air path switching, and when the driving knob 8 is not magnetically attracted to the rotating column 9, the switching plate 7 is attracted by the magnetic strip 91 intermittently arranged between the switching edge 92, so that the switching plate 7 fits with the magnetic strip 91, maintaining the air path connection mode of the single air channel 31 in the single-pass mode, and maintaining the air path connection mode of the dual air channel 32 in the dual-pass mode.

[0030] Working principle: The three-way valve 1 of the present invention is mainly divided into single-way, two-way and three-way modes when in use, wherein the single-way mode is: when the single-way air channel 31 is connected, a one-to-one connection mode is realized. At this time, the air path blocking sealing plug 4 in the air channel is set according to the first setting method. When a single input end in the three-way air channel male end 11 is connected to the existing gas compression equipment, high-pressure gas is blown into the input end of the single-way air channel 31 connected to this passage through the gas blown in from the single input end, and the air path blocking sealing plugs 4 relatively set here are driven by the gas to separate from each other, and the blocking state between the blocking male head 41 and the blocking female head 42 is released, so that the air path in the single-way air channel 31 is input into the switching sleeve 2 through the input end, and is separated from each other at the symmetrically set output end of the single-way air channel 31 through a group of air path blocking sealing plugs 4 connected to this air path, realizing one-to-one air path connection in the single-way mode.

[0031] The dual-pass mode is: when the dual air channels 32 are connected, a two-to-two connection mode is realized. At this time, the air path blocking sealing plug 4 in the air channel is set according to the second setting method. When the two output ends in the three-way air channel male end 11 are connected to the existing gas compression equipment, the two air channels are connected at this time, and the air path blocking sealing plugs 4 in the un-conducted air channel are squeezed by the air path blocking sealing plugs 4 in the two conducting air channels, so that the un-conducted air channel is in a completely closed state, so that the air channel is not affected by dust, and the connected air channel remains stable, avoiding the situation where the air pressure in the conducting air channel cannot be stable and turbulent, thereby realizing two-to-two air channel connection in the dual-pass mode.

[0032] The three-way mode is: when the three-way air channel 33 is connected, a three-to-three connection mode is realized. At this time, the air path blocking sealing plug 4 in the air channel is set according to the third setting method, so that in the three-way air channel 33, each air channel is in a conductive state, and each air channel forms an independent state through the fixed air path blocking sealing plug 4, and there will be no mutual interference, thereby realizing three-to-three air path connection in the three-way mode.

[0033] The three-way valve 1 switches between various modes through a mode switching mechanism. The switching process is as follows: a movable latch is plugged into the pressing column 52 and is slidably connected to the rotation drive groove 51. The drive column 5 is connected to the three-way valve 1 in a sealed rotation connection. When the pressing column 52 is squeezed, the drive column 5 can be driven to rotate by the movable latch. When the squeezing is released, the elastic force of the return spring 53 squeezes the pressing column 52 out of the three-way valve 1, so that it returns to its original position and waits for the next squeezing. Based on the above, during the movement of the pressing column 52, the movable pin slides along the inner wall of the cyclically arranged rotation drive groove 51, so that the drive column 5 can be intermittently rotated along a rotation direction, and the rotation drive groove 51 slide path on the pressing column 52 symmetrically arranged above and below is also symmetrically arranged, so that when the pressing column 52 is symmetrically squeezed on both sides of the three-way valve 1, the switching sleeve 2 can be driven to rotate along different rotation directions. There is no need to squeeze the pressing column 52 multiple times to complete the mode switching, thereby realizing convenient switching of the connection mode between independent air paths.

[0034] In the single-pass and dual-pass modes, the air path switching mechanism can switch the single-pass mode to a one-to-two or one-to-three connection mode, and the dual-pass mode to a two-to-many connection mode. The switching process is as follows: at the output ends of the single air channel 31 and the dual air channel 32, the air path switching mechanism can be used to convert the one-to-one connection mode in the single air channel 31 into a one-to-two or one-to-three connection mode, and to convert the two-to-two connection mode in the dual air channel 32 into a two-to-three connection mode. Based on the above, by turning the driving knob 8, the rotating column 9 can be driven to rotate, so that the switching edge 92 driven by the required air path switching hole 71 rotates toward the switching plate 7, driving the switching plate 7 to move, thereby connecting the required air path switching hole 71 with the air path, realizing air path switching, and when the driving knob 8 is not magnetically attracted to the rotating column 9, the switching plate 7 is attracted by the magnetic strip 91 intermittently arranged between the switching edge 92, so that the switching plate 7 fits with the magnetic strip 91, maintaining the single airway 31 in the air path connection mode in the single-pass mode, and maintaining the dual airway 32 in the air path connection mode in the dual-pass mode.

[0035] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A multifunctional three-way connector, comprising a three-way valve (1), characterized in that: The three-way valve (1) is provided with a three-way air path male end (11) and a three-way air path female end (12); a mode switching mechanism is provided inside the three-way valve (1) for switching the air path; and an air path closing mechanism is provided in the air path middle section of the mode switching mechanism for closing redundant air paths; The mode switching mechanism comprises a switching drive assembly symmetrically arranged on both sides of the three-way valve (1), the switching drive assembly being provided with a switching sleeve (2) rotatably connected to the inner wall of the three-way valve (1), the switching sleeve (2) being provided with a three-mode switching airway (3), and the two ends of the three-mode switching airway (3) being respectively connected to the male end (11) and the female end (12) of the three-way airway; The air path sealing mechanism comprises a plurality of air path blocking sealing plugs (4) arranged in the three-mode switching air path (3), wherein two oppositely arranged air path blocking sealing plugs (4) form a group, and each group of air path blocking sealing plugs (4) is provided with a blocking male head (41) and a blocking female head (42) on opposite sides.

2. A multifunctional three-way connector according to claim 1, characterized in that: An observation window is provided on the three-way valve (1), a switching indicator strip (21) is provided on the surface of the switching sleeve (2), and the three-way valve (1) observes the switching indicator strip (21) through the observation window.

3. The multifunctional three-way connector according to claim 1, characterized in that: The switching drive assembly comprises a driving column (5) symmetrically arranged in the three-way valve (1), wherein the two driving columns (5) are respectively fixed to the two ends of the switching sleeve (2), and the driving column (5) is slidably connected to a pressing column (52) through a rotating driving groove (51), and a return spring (53) is provided between the driving column (5) and the pressing column (52).

4. The multifunctional three-way connector according to claim 1, characterized in that: A three-way dividing block (22) is fixed inside the switching sleeve (2), and the interior of the switching sleeve (2) is divided into three independent switching chambers (23) by the three-way dividing block (22).

5. The multifunctional three-way connector according to claim 4, characterized in that: The three-mode switching air channel (3) is composed of a single air channel (31), a double air channel (32) and a three-way air channel (33) symmetrically connected to the switching sleeve (2), wherein the single air channel (31) is connected to a single three-way air channel male end (11) and a three-way air channel female end (12), the double air channel (32) is connected to two three-way air channel male ends (11) and three-way air channel female ends (12), and the three-way air channel (33) is connected to three three-way air channel male ends (11) and three-way air channel female ends (12).

6. The multifunctional three-way connector according to claim 5, characterized in that: The arrangement of the air path blocking seal plug (4) in the three-mode switching airway (3) is divided into three types according to the different modes, and the three different arrangement methods are arranged in the single-way airway (31), the double-way airway (32) and the triple-way airway (33) in sequence, and the air path blocking seal plug (4) is provided with mutually repelling permanent magnets (43); The first arrangement is as follows: in a single airway (31), the permanent magnet (43) is arranged on the opposite side of each group of the airway blocking seal plugs (4) in the central area of the airway, and the airway blocking seal plugs (4) located in the edge area of the airway are fixedly connected to the single airway (31); The second setting method is: in the double air passage (32), the permanent magnet (43) is arranged on the opposite side of each group of the air passage blocking sealing plugs (4) in the central area of the air passage, and on the opposite side of the single air passage (31) and the air passage blocking sealing plug (4) in the edge area of the air passage, and the setting method of each group of the air passage blocking sealing plugs (4) in the central area of the air passage is the same as the first setting method; The third setting mode is as follows: in the three-way air channel (33), each group of the air path blocking sealing plugs (4) is fixedly arranged in the three-way air channel (33), and the blocking male head (41) and the blocking female head (42) between each group of the air path blocking sealing plugs (4) are in an open state.

7. The multifunctional three-way connector according to claim 6, characterized in that: Limit blocks (6) are provided in the single air passage (31) and the dual air passage (32), and the air passage blocking sealing plug (4) slidably connected to the three-mode switching air passage (3) limits the sliding distance through the limit blocks (6).

8. The multifunctional three-way connector according to claim 5, characterized in that: The output ends of the single air channel (31) and the dual air channel (32) are both provided with an air path switching mechanism, the air path switching mechanism comprising a switching plate (7) slidably connected to the output end of the single air channel (31), the switching plate (7) being provided with an air path switching through hole (71), the switching plate (7) changing the position of the air path switching through hole (71) and switching the number of air paths at the output end of the single air channel (31) through a sealing drive assembly.

9. The multifunctional three-way connector according to claim 8, characterized in that: The sealing drive assembly comprises a driving knob (8) rotatably arranged on the three-way valve (1) and a rotating column (9) rotatably arranged at the output end of the single airway (31), a positioning magnet (81) is arranged between the driving knob (8) and the rotating column (9), a magnetic strip (91) that attracts the switching plate (7) is arranged on the rotating column (9), and a switching edge (92) is also arranged on the rotating column (9).

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