CN218011608U

CN218011608U - Water-gas separation assembly, water-gas separation device and suction equipment

Info

Publication number: CN218011608U
Application number: CN202222315508.3U
Authority: CN
Inventors: 吕冰; 周元胜; 黄学华; 刘冰兼
Original assignee: Guangzhou Ajax Medical Equipment Co Ltd
Current assignee: Guangzhou Ajax Medical Equipment Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-13
Anticipated expiration: 2032-08-31

Abstract

The utility model provides a water-gas separation component, a water-gas separation device and a suction device, wherein the water-gas separation component comprises a separating cylinder with an inner cavity, the upper end of the separating cylinder is provided with a first interface for communicating the inner cavity and an air inlet of a negative pressure pump, the side wall of the separating cylinder is provided with a second interface for communicating the inner cavity and an air outlet of a water-gas separation mechanism, and the lower end of the separating cylinder is provided with a third interface for communicating the inner cavity and a drainage component; the inner diameter of the second interface is smaller than that of the inner cavity; the third interface is provided with the non return joint. The utility model provides a water gas separation subassembly, water gas separator and suction equipment carry out the secondary aqueous vapor through the gas to aqueous vapor separating mechanism output and separate, effectively prevent that the negative pressure pump from pumping moist gas, avoid leading to the inside component part of negative pressure pump to rust, are favorable to prolonging the life of negative pressure pump.

Description

Water-gas separation assembly, water-gas separation device and suction equipment

Technical Field

The utility model belongs to the technical field of medical instrument, more specifically say, relate to a aqueous vapor separator subassembly, aqueous vapor separator and suction equipment.

Background

Medical instruments refer to instruments, devices, appliances, in-vitro diagnostic reagents and calibrators, materials and other similar or related items used directly or indirectly for human body, and are used for diagnosis, prevention, monitoring, treatment or relief of diseases, diagnosis, monitoring, treatment, relief or functional compensation of injuries, examination, substitution, regulation or support of physiological structures or physiological processes, support or maintenance of life, and the like. Dentistry, one of the medical disciplines, needs to equip a large number of medical instruments for the treatment of patients, including the use of a negative pressure pump to pump gas for the treatment of patients, but because the used gas is contaminated with liquid, the liquid in the gas needs to be removed to prevent damage to the negative pressure pump.

In the prior art, a water-gas separator is additionally arranged at an air inlet of a negative pressure pump, gas mixed with liquid is subjected to water-gas separation through the water-gas separator, a liquid part is separated from the gas and discharged under the action of the water-gas separator, and the separated gas is conveyed to the negative pressure pump. However, in the actual use process, the moisture separator arranged on the negative pressure pump cannot completely cover all the use working conditions, so that moisture is not completely separated, and partial liquid still can be mixed in the gas, so that the negative pressure pump sucks damp gas for a long time, internal components of the negative pressure pump rust, and the service life of the negative pressure pump is shortened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water gas separable set to solve the setting that exists among the prior art and can't cover all use operating modes completely at the water gas separator of the air inlet department of negative pressure pump, lead to the aqueous vapor separation not thorough, so that the negative pressure pump inhales moist gas for a long time, lead to the inside component part of negative pressure pump to rust, shorten the technical problem of the life of negative pressure pump.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a water-gas separation component, which is arranged between a water-gas separation mechanism and a negative pressure pump, wherein the water-gas separation component comprises a separation barrel with an inner cavity, the upper end of the separation barrel is provided with a first interface used for communicating the inner cavity with a gas inlet of the negative pressure pump, the side wall of the separation barrel is provided with a second interface used for communicating the inner cavity with a gas outlet of the water-gas separation mechanism, and the lower end of the separation barrel is provided with a third interface used for communicating the inner cavity with a drainage component; the inner diameter of the second interface is smaller than that of the inner cavity; the third interface is provided with the non return joint.

In one embodiment, the first interface is provided with a switching joint for connecting the negative pressure pump, the switching joint comprises a first connecting section connected with the first interface, a second connecting section connected with the negative pressure pump, and a pressurizing section arranged between the first connecting section and the second connecting section, and the inner diameter of the pressurizing section is gradually reduced from the first connecting section to the second connecting section.

In one embodiment, the water gas separation assembly further comprises a fixing tube for fixedly connecting the adapter to the first port.

In one embodiment, the separation cylinder is provided with a sealing ring at the second port for sealing a gap between the second port and the gas outlet.

In one embodiment, the check joint comprises a valve body fixedly connected with the separating cylinder, a valve plate and a fixing structure fixedly connected with the valve body and used for limiting the moving range of the valve plate, the valve body is provided with a conveying channel which is communicated with the inner cavity and the water drainage component and used for conveying liquid in a penetrating mode, and the valve plate is covered on the conveying channel and used for communicating or disconnecting the inner cavity and the water drainage component.

In one embodiment, the valve body is provided with a conical groove communicated with the inner cavity, and the valve plate is arranged in the conical groove and covers the conveying channel and is used for communicating or disconnecting the conical groove and the drainage component.

In one embodiment, the valve body is connected with the fixing structure in a buckling manner, a clamping protrusion for connecting the fixing structure in a buckling manner is arranged on the valve body, and a clamping groove matched with the clamping protrusion is arranged on the fixing structure;

or, the valve body with fixed knot constructs the buckle and connects, fixed knot constructs to be provided with and is used for connecting its buckle in joint arch on the valve body, be provided with on the valve body with the protruding looks adaptation's of joint draw-in groove.

In one embodiment, the valve plate is a rubber gasket.

The utility model provides a water-gas separation subassembly's beneficial effect lies in: compared with the prior art, the utility model discloses water gas separation subassembly sets up between water gas separation mechanism and negative pressure pump, and water gas separation subassembly includes the cylinder that has an inner chamber, and the upper end of cylinder is provided with the first interface that is used for the air inlet of intercommunication inner chamber and negative pressure pump, and the lateral wall of cylinder is provided with the second interface that is used for the gas outlet of intercommunication inner chamber and water gas separation mechanism, and the internal diameter of second interface is less than the internal diameter of inner chamber, and the lower extreme of cylinder is provided with the third interface that is used for intercommunication inner chamber and drainage parts, and the third interface is provided with the non return joint; when the negative pressure pump starts pumping operation, the check joint of the third interface is closed and cuts off the communication between the inner cavity and the drainage component, the gas which is output from the gas outlet of the water-gas separation mechanism and is mixed with liquid enters the inner cavity of the separation cylinder through the second interface, and the inner diameter of the second interface is smaller than that of the inner cavity, so that the flow speed of the gas which is mixed with liquid is reduced and is abutted against the inner wall of the separation cylinder, and the liquid which is mixed with liquid cannot continuously flow towards the direction of the negative pressure pump above due to different gravity and friction force of the gas and the liquid and can only be attached to the inner wall of the separation cylinder and flow downwards along the inner wall, and the separated gas is conveyed to the gas inlet of the negative pressure pump through the first interface, so that water-gas separation is realized; when the negative pressure pump stops pumping operation, the check joint of the third interface is opened to communicate the inner cavity and the drainage component, and the liquid separated from the separating cylinder flows through the third interface and is drained out of the inner cavity by the drainage component; the simple structure of aqueous vapor separation subassembly, it is convenient to assemble, carries out secondary aqueous vapor separation through the gas to aqueous vapor separation mechanism output, prevents effectively that the negative pressure pump from pumping moist gas, avoids leading to the inside component part of negative pressure pump to rust, is favorable to prolonging the life of negative pressure pump.

An object of the utility model is to provide a water and air separator to solve the setting that exists among the prior art and can't cover all use operating modes completely at the water and air separator of the air inlet department of negative pressure pump, lead to the aqueous vapor separation not thorough, so that the negative pressure pump inhales moist gas for a long time, lead to the inside component part of negative pressure pump to rust, shorten the technical problem of negative pressure pump's life.

In order to achieve the purpose, the utility model adopts the technical proposal that: the water-gas separation device is arranged at the air inlet of the negative pressure pump and comprises a water-gas separation mechanism and the water-gas separation assembly arranged at the air outlet of the water-gas separation mechanism.

The utility model provides a water-gas separation device's beneficial effect lies in: compared with the prior art, the utility model discloses water and gas separator sets up in the air inlet of negative pressure pump, water and gas separator includes aqueous vapor separating mechanism and sets up the aforesaid aqueous vapor separating element at aqueous vapor separating mechanism's gas outlet, aqueous vapor separating element includes the separator cylinder that has an inner chamber, the upper end of separator cylinder is provided with the first interface that is used for communicating inner chamber and negative pressure pump's air inlet, the lateral wall of separator cylinder is provided with the second interface that is used for communicating inner chamber and aqueous vapor separating mechanism's gas outlet, the internal diameter of second interface is less than the internal diameter of inner chamber, the lower extreme of separator cylinder is provided with the third interface that is used for communicating inner chamber and drain unit, the third interface is provided with the non return joint; when the negative pressure pump starts pumping operation, the check joint of the third interface on the separating cylinder is closed, and the communication between the inner cavity and the drainage component is cut off, the gas which is output from the gas outlet of the water-gas separating mechanism and is mixed with liquid enters the inner cavity of the separating cylinder through the second interface, and the inner diameter of the second interface is smaller than that of the inner cavity, so that the flow speed of the gas which is mixed with liquid is reduced and is abutted against the inner wall of the separating cylinder, and the liquid which is mixed with the liquid cannot continuously flow towards the direction of the upward negative pressure pump because the gravity and the friction force which are borne by the gas and the liquid are different, and only can be attached to the inner wall of the separating cylinder and flow downwards along the inner wall, and the separated gas is conveyed to the gas inlet of the negative pressure pump through the first interface, so that the water-gas separation is realized; when the negative pressure pump stops pumping operation, the check joint of the third interface is opened to communicate the inner cavity and the drainage component, and the liquid separated from the separating cylinder flows through the third interface and is drained out of the inner cavity by the drainage component; the water-gas separation device effectively prevents the negative pressure pump from pumping moist gas by carrying out secondary water-gas separation on the gas output by the water-gas separation mechanism through utilizing the water-gas separation component, avoids leading to rusting of internal components of the negative pressure pump, and is favorable for prolonging the service life of the negative pressure pump.

An object of the utility model is to provide a suction device to solve the setting that exists among the prior art and can't cover all use operating modes completely at the moisture separator of the air inlet department of negative pressure pump, lead to the aqueous vapor separation not thorough, so that the negative pressure pump inhales moist gas for a long time, lead to the inside component part of negative pressure pump to rust, shorten the technical problem of the life of negative pressure pump.

In order to achieve the above object, the utility model adopts the following technical scheme: the suction equipment comprises a negative pressure pump, a water-gas separation mechanism and the water-gas separation assembly arranged between the negative pressure pump and the water-gas separation mechanism.

The utility model provides a suction device's beneficial effect lies in: compared with the prior art, the utility model discloses suction device includes negative pressure pump, aqueous vapor separating mechanism to and set up the foretell aqueous vapor separable set between negative pressure pump and aqueous vapor separating mechanism. The water-gas separation assembly comprises a separation barrel with an inner cavity, a first interface used for communicating the inner cavity and a gas inlet of the negative pressure pump is arranged at the upper end of the separation barrel, a second interface used for communicating the inner cavity and a gas outlet of the water-gas separation mechanism is arranged on the side wall of the separation barrel, the inner diameter of the second interface is smaller than that of the inner cavity, a third interface used for communicating the inner cavity and a drainage component is arranged at the lower end of the separation barrel, and a non-return joint is arranged at the third interface; when the negative pressure pump starts pumping operation, the check joint of the third interface is closed and cuts off the communication between the inner cavity and the drainage component, the gas which is output from the gas outlet of the water-gas separation mechanism and is mixed with liquid enters the inner cavity of the separation cylinder through the second interface, and the inner diameter of the second interface is smaller than that of the inner cavity, so that the flow speed of the gas which is mixed with liquid is reduced and is abutted against the inner wall of the separation cylinder, and the liquid which is mixed with liquid cannot continuously flow towards the direction of the negative pressure pump above due to different gravity and friction force of the gas and the liquid and can only be attached to the inner wall of the separation cylinder and flow downwards along the inner wall, and the separated gas is conveyed to the gas inlet of the negative pressure pump through the first interface, so that water-gas separation is realized; when the negative pressure pump stops pumping operation, the check joint of the third interface is opened to communicate the inner cavity and the drainage component, and the liquid separated from the separating cylinder flows through the third interface and is drained out of the inner cavity by the drainage component; the suction device effectively prevents the negative pressure pump from sucking damp gas by performing secondary water-gas separation on the gas output by the water-gas separation mechanism through the water-gas separation component, avoids rusting of internal components of the negative pressure pump, and is favorable for prolonging the service life of the suction device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a water-gas separation assembly according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a water-gas separation assembly according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a check joint of a water-gas separation assembly provided in an embodiment of the present invention in a closed state;

fig. 4 is a schematic cross-sectional view of a check joint of a water-gas separation assembly in an open state according to an embodiment of the present invention.

Wherein, in the figures, the various reference numbers:

1. a water-gas separation assembly; 2. a separation cylinder; 21. an inner cavity; 22. a first interface; 23. a second interface; 24. a third interface; 3. a non-return joint; 31. a valve body; 311. a tapered slot; 312. a delivery channel; 32. a valve plate; 33. a fixed structure; 4. a transfer joint; 41. a first connection section; 42. a pressurizing section; 43. a second connection section; 5. and fixing the tube.

Detailed Description

In order to make the technical problem, technical solution and beneficial effects to be solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Please refer to fig. 1 to fig. 3 together, the embodiment of the present invention provides a water-gas separating assembly 1, which is disposed between a water-gas separating mechanism and a negative pressure pump, wherein the water-gas separating assembly 1 includes a separating cylinder 2 having an inner cavity 21, the upper end of the separating cylinder 2 is provided with a first interface 22 for communicating the inner cavity 21 with the air inlet of the negative pressure pump, the sidewall of the separating cylinder 2 is provided with a second interface 23 for communicating the inner cavity 21 with the air outlet of the water-gas separating mechanism, the inner diameter of the second interface 23 is smaller than the inner diameter of the inner cavity 21, the lower end of the separating cylinder 2 is provided with a third interface 24 for communicating the inner cavity 21 with a water discharging component, and the third interface 24 is provided with a check joint 3; when the negative pressure pump starts pumping operation, the check joint 3 of the third interface 24 is closed and cuts off the communication between the inner cavity 21 and the drainage component, the gas which is mixed with liquid and is output from the gas outlet of the water-gas separation mechanism enters the inner cavity 21 of the separation cylinder 2 through the second interface 23, as the inner diameter of the second interface 23 is smaller than the inner diameter of the inner cavity 21, the flow speed of the gas which is mixed with liquid is reduced and is abutted against the inner wall of the separation cylinder 2, and as the gravity and the friction force which are borne by the gas and the liquid are different, the liquid which is mixed with the gas cannot continuously flow towards the direction of the negative pressure pump above and only can be attached to the inner wall of the separation cylinder 2 and flow downwards along the inner wall, and the separated gas is conveyed to the gas inlet of the negative pressure pump through the first interface 22, so that water-gas separation is realized; when the negative pressure pump stops pumping operation, the check joint 3 of the third interface 24 is opened to communicate the inner cavity 21 with the drainage component, so that the liquid separated from the separating cylinder 2 flows through the third interface 24 and is drained out of the inner cavity 21 by the drainage component; the water-gas separation component 1 is simple in structure and convenient to assemble, secondary water-gas separation is carried out on gas output by the water-gas separation mechanism, the negative pressure pump is effectively prevented from pumping humid gas, rusting of internal component parts of the negative pressure pump is avoided, and the service life of the negative pressure pump is prolonged.

Please further refer to fig. 1 to 3, as an embodiment of the present invention, a first interface 22 of a separation cylinder 2 of the water-gas separation assembly 1 is provided with a transfer joint 4 for connecting a negative pressure pump, the transfer joint 4 includes a first connection section 41 connected to the first interface 22, a second connection section 43 connected to the negative pressure pump, and a pressurization section 42 disposed between the first connection section 41 and the second connection section 43, an inner diameter of the pressurization section 42 is gradually reduced from the first connection section 41 to the second connection section 43, on one hand, the application range of the water-gas separation assembly 1 can be effectively increased, the negative pressure pump can be adapted to different air inlet apertures, on the other hand, the first connection section 41 of the separation cylinder 2 is connected to the first interface 22 through the first connection section 41 of the transfer joint 4, the second connection section 43 is connected to the negative pressure pump, and a pressurization section 42 is disposed between the first connection section 41 and the second connection section 43, and an inner diameter of the pressurization section 42 is gradually reduced from the first connection section 41 to the second connection section 43, and a gas is guided into the separation cylinder 2, thereby ensuring that the gas flows through the reverse flow velocity of the gas separation cylinder, and the gas pumping operation can be smoothly performed, and the reverse flow velocity of the gas separation cylinder 21 can be increased.

Optionally, the water-gas separation assembly 1 further comprises a fixing pipe 5 for fixedly connecting the adapter 4 to the first connector 22, and the adapter 4 is fixedly mounted on the first connector 22 through the fixing pipe 5; the connection mode between the fixed pipe 5 and the separation cylinder 2 and the adapter 4 is not limited; optionally, the separating cylinder 2 and the adapter 4 are both in threaded connection with the fixed pipe 5, the circumferential outer wall of the fixed pipe 5 is provided with external threads, the inner wall of the separating cylinder 2 and the inner wall of the adapter 4 are both provided with internal threads matched with the external threads, the fixed pipe 5 is used for stably installing the adapter 4 on the first connector 22 of the separating cylinder 2 in a threaded connection mode, and the separating cylinder is simple in structure and convenient to assemble and disassemble. Optionally, the separation cylinder 2 and the adapter 4 are both connected with the fixed pipe 5 in a buckling manner, clamping protrusions are uniformly distributed on the circumferential outer wall of the fixed pipe 5, and clamping grooves matched with the clamping protrusions are formed in the inner wall of the separation cylinder 2 and the inner wall of the adapter 4; or, the joint arch has all evenly been laid to the inner wall of cylinder 2 and the inner wall of adapter 4, and the circumference outer wall of fixed pipe 5 is provided with the draw-in groove with the protruding looks adaptation of joint, and fixed pipe 5 all is provided with the sealing washer simultaneously between fixed pipe 5 and cylinder 2 and adapter 4 with adapter 4 installed adapter 4 on the first interface 22 of cylinder 2 firmly through the mode that the buckle is connected, ensures its leakproofness, simple structure, and the equipment is swift.

Optionally, the separating cylinder 2 is provided with a sealing ring at the second interface 23, and is used for sealing a gap between the second interface 23 and the air outlet of the water-gas separating mechanism, so that when the negative pressure pump performs pumping operation, external air doped with impurities enters the inner cavity 21 of the separating cylinder 2 through the gap between the second interface 23 and the air outlet, the separating effect of the water-gas separating assembly 1 is influenced, the sealing performance of the inner cavity 21 of the separating cylinder 2 is guaranteed, and meanwhile, the operating efficiency of the negative pressure pump is favorably guaranteed.

Referring to fig. 2 to 4, in this embodiment, the third port 24 of the separation cylinder 2 is provided with the check joint 3 for preventing the liquid from flowing back to the inner cavity 21, when the negative pressure pump starts the suction operation, the check joint 3 of the third port 24 closes and cuts off the communication between the inner cavity 21 and the drainage component, so as to prevent the liquid in the drainage component from being sucked into the negative pressure pump during the suction operation, which causes rusting of the internal components of the negative pressure pump and affects the service life of the negative pressure pump, and when the negative pressure pump stops the suction operation, the check joint 3 of the third port 24 is opened to communicate the inner cavity 21 and the drainage component, so that the liquid separated from the separation cylinder 2 flows through the third port 24 and is discharged out of the inner cavity 21 by the drainage component. Alternatively, the drainage member may be a drain pipe, a water pan, or the like, and may be a drainage member capable of discharging the separated liquid out of the inner cavity 21.

Optionally, the check joint 3 includes a valve body 31 fixedly connected with the separation cylinder 2, a valve sheet 32, and a fixing structure 33 fixedly connected with the valve body 31 and used for limiting a moving range of the valve sheet 32, the valve body 31 penetrates through a conveying passage 312 which is provided with a communicating inner cavity 21 and a water discharge part and used for conveying liquid, and the valve sheet 32 is covered on the conveying passage 312 and used for communicating or disconnecting the inner cavity 21 and the water discharge part; when the water-gas separation component 1 is in a non-working state, namely when the negative pressure pump stops working, the air pressure in the separation cylinder 2 is equal to the external air pressure, the valve plate 32 covers the port of the conveying channel 312, the side wall of one side of the valve plate 32 is fixedly connected with the port of the conveying channel 312, the other side of the valve plate 32 inclines downwards under the action of gravity and is partially arranged in the conveying channel 312, so that a gap exists between the conveying channel 312 and the valve plate 32, the inner cavity 21 and the drainage component are communicated, the liquid collected in the inner cavity 21 is conveyed to the drainage component along the conveying channel 312, and the liquid is discharged out of the inner cavity 21 of the separation cylinder 2; when liquid is discharged out of the inner cavity 21 and the operation of the negative pressure pump needs to be started, namely, the water-gas separation assembly 1 is in a working state, the negative pressure pump sucks gas in the inner cavity 21, so that the flow velocity of the gas in the inner cavity 21 is large, negative pressure is formed in the inner cavity 21, the valve plate 32 is adsorbed towards the air inlet direction of the negative pressure pump under the action of air pressure, the valve plate 32 is abutted to the fixing structure 33, the fixing structure 33 limits the moving range of the valve plate 32, the valve plate 32 is tightly attached to the fixing structure 33 and can be accurately covered at the port of the conveying channel 312, the communication between the inner cavity 21 and a drainage component is further disconnected, the liquid in the drainage component is prevented from flowing back into the inner cavity 21 and is sucked into the inner cavity by the negative pressure pump to cause damage, the separation effect of the water-gas separation assembly 1 is guaranteed, and meanwhile the operation efficiency of the negative pressure pump is favorably guaranteed. Optionally, the valve plate 32 is a rubber gasket, which is beneficial to ensuring the sealing performance of the check joint 3 and ensuring the sealing performance of the inner cavity 21 of the separation cylinder 2.

Optionally, the valve body 31 has a tapered groove 311 communicated with the inner cavity 21, the valve sheet 32 is disposed in the tapered groove 311 and covers the conveying channel 312, and is used for communicating or disconnecting the tapered groove 311 and the drainage component, the separated liquid is converged into the tapered groove 311 by the tapered groove 311 of the valve body 31 communicated with the inner cavity 21, so as to be drained to the port of the conveying channel 312, the liquid is conveyed to the drainage component along the conveying channel 312 by using the gap between the port of the conveying channel 312 and the valve sheet 32, so as to discharge the liquid out of the inner cavity 21 of the separation cylinder 2, which is beneficial to improving the conveying efficiency, and meanwhile, the liquid remained in the inner cavity 21 can be prevented from being sucked into the inner cavity by the negative pressure pump to cause damage.

Optionally, the valve body 31 is connected with the fixing structure 33 in a snap-fit manner, a snap-fit protrusion for connecting the fixing structure 33 in a snap-fit manner is arranged on the valve body 31, and a snap groove matched with the snap-fit protrusion is arranged on the fixing structure 33; or, valve body 31 and fixed knot construct 33 snap-fit connection, it is protruding to be provided with the joint that is used for connecting its snap-fit on valve body 31 on the fixed knot construct 33, be provided with on the valve body 31 with the protruding looks adaptation of joint draw-in groove, install the preset position on valve body 31 firmly fixed knot construct 33 through the mode of snap-fit connection, when realizing that restriction valve block 32 removes, avoid hindering the liquid that separates to converge to the bell jar 311 in, simple structure, it is convenient to assemble.

The utility model also provides a water-gas separation device which is arranged at the air inlet of the negative pressure pump and comprises a water-gas separation mechanism and the water-gas separation component 1 arranged at the air outlet of the water-gas separation mechanism; the water-gas separation component 1 comprises a separation cylinder 2 with an inner cavity 21, a first interface 22 used for communicating the inner cavity 21 and a gas inlet of a negative pressure pump is arranged at the upper end of the separation cylinder 2, a second interface 23 used for communicating the inner cavity 21 and a gas outlet of a water-gas separation mechanism is arranged on the side wall of the separation cylinder 2, the inner diameter of the second interface 23 is smaller than that of the inner cavity 21, a third interface 24 used for communicating the inner cavity 21 and a drainage component is arranged at the lower end of the separation cylinder 2, and the third interface 24 is provided with a check joint 3; when the negative pressure pump starts pumping operation, the check joint 3 of the third interface 24 on the separating cylinder 2 is closed, and the communication between the inner cavity 21 and the drainage component is cut off, the gas which is mixed with liquid and is output from the gas outlet of the water-gas separating mechanism enters the inner cavity 21 of the separating cylinder 2 through the second interface 23, because the inner diameter of the second interface 23 is smaller than the inner diameter of the inner cavity 21, the bernoulli principle is combined, the flow speed of the gas which is mixed with liquid is reduced, the gas is abutted against the inner wall of the separating cylinder 2, and the liquid which is mixed with the gas cannot continuously flow towards the direction of the negative pressure pump above due to different gravity and friction force borne by the gas and the liquid, and only can be attached to the inner wall of the separating cylinder 2 and flow downwards along the inner wall, and the separated gas is conveyed to the gas inlet of the negative pressure pump through the first interface 22, so that water-gas separation is realized; when the negative pressure pump stops pumping, the check joint 3 of the third interface 24 is opened to communicate the inner cavity 21 with the drainage component, so that the liquid separated from the separating cylinder 2 flows through the third interface 24 and is drained out of the inner cavity 21 by the drainage component; the water-gas separation device effectively prevents the negative pressure pump from pumping moist gas by performing secondary water-gas separation on the gas output by the water-gas separation mechanism through the water-gas separation component 1, avoids the rusting of internal components of the negative pressure pump, and is favorable for prolonging the service life of the negative pressure pump.

The utility model also provides a suction device, which comprises a negative pressure pump, a water-gas separation mechanism and the water-gas separation component 1 arranged between the negative pressure pump and the water-gas separation mechanism; the water-gas separation component 1 comprises a separation barrel 2 with an inner cavity 21, a first connector 22 used for communicating the inner cavity 21 and a gas inlet of a negative pressure pump is arranged at the upper end of the separation barrel 2, a second connector 23 used for communicating the inner cavity 21 and a gas outlet of a water-gas separation mechanism is arranged on the side wall of the separation barrel 2, the inner diameter of the second connector 23 is smaller than that of the inner cavity 21, a third connector 24 used for communicating the inner cavity 21 and a drainage component is arranged at the lower end of the separation barrel 2, and a check connector 3 is arranged on the third connector 24; when the negative pressure pump starts pumping operation, the check joint 3 of the third interface 24 is closed and cuts off the communication between the inner cavity 21 and the drainage component, the gas which is mixed with liquid and is output from the gas outlet of the water-gas separation mechanism enters the inner cavity 21 of the separation cylinder 2 through the second interface 23, as the inner diameter of the second interface 23 is smaller than the inner diameter of the inner cavity 21, the flow speed of the gas which is mixed with liquid is reduced and is abutted against the inner wall of the separation cylinder 2, and as the gravity and the friction force which are borne by the gas and the liquid are different, the liquid which is mixed with the gas cannot continuously flow towards the direction of the negative pressure pump above and only can be attached to the inner wall of the separation cylinder 2 and flow downwards along the inner wall, and the separated gas is conveyed to the gas inlet of the negative pressure pump through the first interface 22, so that water-gas separation is realized; when the negative pressure pump stops pumping operation, the check joint 3 of the third interface 24 is opened to communicate the inner cavity 21 with the drainage component, so that the liquid separated from the separating cylinder 2 flows through the third interface 24 and is drained out of the inner cavity 21 by the drainage component; suction apparatus carries out secondary aqueous vapor separation through utilizing aqueous vapor separating subassembly 1 to the gas of aqueous vapor separating mechanism output, effectively prevents that the negative pressure pump from pumping moist gas, avoids leading to the inside component part of negative pressure pump to rust, is favorable to prolonging suction apparatus's life.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a water gas separation subassembly, sets up between water gas separation mechanism and negative pressure pump, its characterized in that: the water-gas separation assembly comprises a separation barrel with an inner cavity, a first interface used for communicating the inner cavity with a gas inlet of the negative pressure pump is arranged at the upper end of the separation barrel, a second interface used for communicating the inner cavity with a gas outlet of the water-gas separation mechanism is arranged on the side wall of the separation barrel, and a third interface used for communicating the inner cavity with a drainage component is arranged at the lower end of the separation barrel; the inner diameter of the second interface is smaller than that of the inner cavity; the third interface is provided with the non return joint.

2. The water-gas separation assembly of claim 1, wherein: the first interface is provided with and is used for connecting the adapter joint of negative pressure pump, the adapter joint include with first linkage segment of first interface connection, with the second linkage segment that negative pressure pump is connected, and set up first linkage segment with pressurization section between the second linkage segment, the internal diameter of pressurization section by first linkage segment extremely the second linkage segment is the setting of dwindling gradually.

3. The water-gas separation assembly of claim 2, wherein: the water-gas separation component also comprises a fixing pipe used for fixedly connecting the adapter joint to the first interface.

4. The water-gas separation assembly of any one of claims 1 to 3, wherein: the separating cylinder is located the second interface is provided with the sealing washer for seal the second interface with the clearance between the gas outlet.

5. The water-gas separation assembly of any one of claims 1 to 3, wherein: the check joint include with separator fixed connection's valve body, valve block, and with valve body fixed connection just is used for the restriction the valve block removes interval fixed knot and constructs, the valve body runs through to be provided with the intercommunication the inner chamber with drainage component just is used for carrying the transfer passage of liquid, the valve block lid is established transfer passage is last, be used for the intercommunication or disconnection the inner chamber with drainage component.

6. The water-gas separation assembly of claim 5, wherein: the valve body is provided with a conical groove communicated with the inner cavity, and the valve plate is arranged in the conical groove and covers the conveying channel and is used for communicating or disconnecting the conical groove and the drainage component.

7. The water-gas separation assembly of claim 5, wherein: the valve body is connected with the fixed structure in a buckling mode, a clamping protrusion used for being connected with the fixed structure in a buckling mode is arranged on the valve body, and a clamping groove matched with the clamping protrusion is formed in the fixed structure;

8. The water-gas separation assembly of claim 5, wherein: the valve plate is a rubber gasket.

9. The utility model provides a water gas separator, sets up in the air inlet of negative pressure pump which characterized in that: the water-gas separation device comprises a water-gas separation mechanism and the water-gas separation assembly as claimed in any one of claims 1 to 8 arranged at the air outlet of the water-gas separation mechanism.

10. A suction device characterized by: the water-gas separation device comprises a negative pressure pump, a water-gas separation mechanism and the water-gas separation assembly according to any one of claims 1 to 8, wherein the water-gas separation assembly is arranged between the negative pressure pump and the water-gas separation mechanism.