CN108019340A - Upper cover and pumping for pumping - Google Patents

Abstract

The invention discloses a kind of upper cover for pumping and pumping.Upper lid is equipped with outlet duct, and upper cover is used to cover the air bag in pumping, and air bag has the air cavity towards upper cover gab, and it is raised that upper lid is equipped with the supercharging being adapted to project into air cavity.Upper cover according to the present invention, supercharging protrusion can coordinate the compression of air cavity after reasonable moulding, and to reduce the residue gas scale of construction, increase pressure at expulsion, this supercharging mode is simple and reasonable for structure, and upper cover cost is relatively low.

Description

Upper cover and pumping for pumping

Technical field

The present invention relates to pump housing equipment technical field, more particularly, to a kind of upper cover for pumping and pumping.

Background technology

General pumping all more or less still suffers from airtight bad, air-flow has noise, air pressure are less than normal to ask in exhaust Topic.Diaphragm pump disclosed in the prior art, its function, structure are more mature, if to increase pressure at expulsion, structural modification is big, Cost is higher.

The content of the invention

The application aims to provide a kind of upper cover for pumping, which is conducive to increase pumping pressure at expulsion, and structure Change that small, cost is low.

It is another object of the present invention to provide a kind of pumping with above-mentioned upper cover.

It is used for the upper cover of pumping according to the present invention, the upper lid is equipped with outlet duct, and the upper cover is used to cover On the air bag of pumping, the air bag has the air cavity towards the upper cover gab, and the upper lid is described equipped with being adapted to project into Supercharging in air cavity is raised.

Upper cover for pumping according to embodiments of the present invention, the air cavity of air bag is adapted to project into by being set on upper lid In supercharging it is raised, supercharging protrusion can coordinate the compression of air cavity to reduce the residue gas scale of construction, increase exhaust pressure after reasonable moulding Power, this supercharging mode is simple and reasonable for structure, and upper cover cost is relatively low.

Specifically, on the direction towards the outlet duct, the raised bottom of the supercharging and the bottom table of the upper cover The distance between face gradually increases.

In certain embodiments, the internal perisporium in the outlet duct is equipped with outgassing groove, the outgassing groove be suitable for it is described Air cavity connects.

Specifically, the raised bottom surface of the supercharging is equipped with the first guide channel for extending to the outgassing groove.

More specifically, the side of the axis in the direction outlet duct of the supercharging protrusion is equipped with the second guide channel, The both ends of second guide channel are connected with first guide channel and the outgassing groove respectively.

Further, guiding muscle is equipped with the outgassing groove.

Pumping according to the present invention, the pumping include motor, offset assembly, air bag and upper cover, and the air bag includes base Attic base, the utricule and valve block for being located at the pedestal disk both sides, limit in the utricule and are passed through towards the side of the pedestal disk Pass to the air cavity to form opening, the valve block is set adjacent to the opening, and the upper cover is covered on the pedestal disk, it is described on Cover and be equipped with outlet duct, the motor is connected with the offset assembly, and the offset assembly is connected with the utricule, described The offset assembly alternately extrudes and stretches the utricule when motor operates, and the upper cover is according to the above-mentioned implementation of the present invention The upper cover for pumping described in example, the valve block are extend into the outlet duct, the valve block and the outlet duct Internal perisporium forms the air bleeding valve of the pumping, and when the utricule is stretched, the valve block is fitted in the inner circumferential in the outlet duct To block the air cavity on wall, when the utricule is extruded, the gas intracavity gas can wash the valve block open to circulate, described It is raised that upper lid is equipped with the supercharging extending into the air cavity.

Pumping according to embodiments of the present invention, by setting the supercharging that can be extend into the air cavity of air bag convex on upper lid Rise, supercharging protrusion can coordinate the compression of air cavity after reasonable moulding, and to increase pressure at expulsion, this supercharging mode is simple in structure, closes Reason, upper cover cost are relatively low.

In certain embodiments, on away from the raised direction of the supercharging, the outlet duct includes at least two horizontal strokes The hole section that sectional area is sequentially reduced, the part between the raised nearest two neighboring hole section of the supercharging form water conservancy diversion Step, the distance between the water conservancy diversion step and the valve block are 0.3mm~3mm.

Specifically, it is connected with reinforcing rib between the valve block and the pedestal disk.

In certain embodiments, the air bag is equipped with multiple utricules, and multiple utricules are around the pedestal disk Center line spaced relation, the air bag further includes：The valve pipe being located on the pedestal disk, the tube wall of the valve pipe are equipped with The fracture of the direction perforation of multiple remote utricules, each fracture penetrates through on the thickness direction of the tube wall, described Part between the two neighboring fracture of valve pipe forms the valve block.

Specifically, one end cross-sectional area increase of the direction air bag in the outlet duct is flared with being formed, the valve Pipe covers the flaring.

The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.

Brief description of the drawings

The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment Substantially and it is readily appreciated that, wherein：

Fig. 1 is the sectional view of upper cover according to an embodiment of the invention；

Fig. 2 is the overlooking structure figure of piston component according to an embodiment of the invention；

Fig. 3 is along A-A sectional views in Fig. 2；

Fig. 4 be one embodiment of the invention pumping in the stretching of air bag a certain utricule schematic diagram；

Fig. 5 is the schematic diagram in a certain utricule extruding of air bag of pumping shown in Fig. 4；

Fig. 6 be another embodiment of the present invention pumping in the stretching of air bag a certain utricule schematic diagram.

Reference numeral：

Pumping 100,

Piston component 1,

Air bag 11, pedestal disk 111, utricule 112, air cavity 1120, first through hole 1121, opening 1122, casing 113, valve pipe 114th, valve block 1141, fracture 1142, reinforcing rib 115,

Connecting bracket 12, connection leg 121, snout cavity 1210, the second through hole 1211, telophragma 122, terminal pad 123, company Connect hole 1231, convex block 124, connection rib 125,

Upper cover 2, outlet duct 21, hole section 211, water conservancy diversion step 212, flaring 213, outgassing groove 214, guiding muscle 215, supercharging Raised 22, first guide channel 221, the second guide channel 222, the first fastener 23, upper cover 2 basal surface S,

Motor 3, motor shaft 31, base 4, the second fastener 41, offset assembly 5, eccentric wheel 51, inclined shaft 52,

Air bag seat 6, matching hole 61, limiting slot 62.

Embodiment

The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

Below with reference to Fig. 1-Fig. 6 descriptions upper cover 2 for pumping according to embodiments of the present invention.

Upper cover 2 for pumping according to embodiments of the present invention, as shown in Figure 1, upper cover 2 is equipped with outlet duct 21, such as Shown in Fig. 4, upper cover 2 is used to cover the air bag 11 in pumping 100, and air bag 11 has the air cavity 1120 being open towards upper cover 2, on Lid 2 is equipped with the supercharging protrusion 22 being adapted to project into air cavity 1120.

Here it is appreciated that the effect of supercharging protrusion 22, it is necessary first to understand the structure and work of the air bag 11 coordinated with upper cover 2 Make principle.

First illustrate the operation principle of air bag 11 by taking the structure of air bag 11 in the example of Fig. 2 and Fig. 3 as an example below.Air bag 11 wraps Include：Pedestal disk 111, utricule 112 and casing 113, pedestal disk 111 and casing 113 are respectively provided at the opposite sides of utricule 112, capsule Air cavity 1120 is being penetrated through towards the side of pedestal disk 111 to form opening 1122 in body 112, and the bottom wall of air cavity 1120, which is equipped with, to be connected The first through hole 1121 of logical casing 113.

As shown in Figure 4 and Figure 5, air bag 11 and mobilizable connecting bracket 12 form piston component 1 in pumping 100.Connection Stent 12 is equipped with connection leg 121, and connection leg 121 is equipped with the second through hole 1211, and connection leg 121 extend into casing In 113.When direction movement of the connection leg 121 towards air bag 11, connection leg 121 can extrude utricule 112；When connection leg When 121 directions for being directed away from air bag 11 are moved, the frictional force that connection leg 121 can pass through between casing 113 pulls casing 113, so that stretchable utricule 112.

It is understood that the utricule 112 of air bag 11 is flexible piece, such as utricule 112 can be made of rubber or plastics, Therefore volume size that is deformable and changing air cavity 1120 when air bag 11 is extruded.When pumping 100 works, dynamical element drives Connecting bracket 12 moves back and forth, and leg 121 is connected in connecting bracket 12 and alternately extrudes and stretch utricule 112, so that alternately Ground changes the volume size of the air cavity 1120 in utricule 112.When stretching utricule 112,1120 volume of air cavity, which becomes larger to complete to suck, to be moved Make；When extruding utricule 112,1120 volume of air cavity, which diminishes, completes exhaust event.Therefore connecting bracket 12 reciprocating motion, it can be achieved that The reciprocal purpose for carrying out suction gas and discharging gas of the utricule 112 of air bag 11, so as to continuously drive gas court Flowed to specific direction.

I.e. in the example, by setting first through hole 1121 on 1120 bottom wall of air cavity, connect and set second on leg 121 Through hole 1211, in the activity of connecting bracket 12, is alternately connected and phase between the second through hole 1211 and first through hole 1121 Stagger.When the second through hole 1211 is connected with first through hole 1121, the second through hole 1211 can be by first through hole 1121 to gas 1120 air inlet of chamber；When the second through hole 1211 is staggered with first through hole 1121, connection leg 121 blocks first through hole 1121. It is dual-purpose by the way that leg 121 1 will be connected in connecting bracket 12, can not only compressed gas, moreover it is possible to control air inlet, reduce pumping 100 number of parts, reduces cost.And intake valve is arranged in connecting bracket 12, it can also simplify the structure of upper cover 2, Reduce difficulty of processing.

It will be seen that by the course of work of above-mentioned air bag 11, the utricule 112 in exhaust of air bag 11 is extruded towards upper cover 2. In the embodiment of the present invention, supercharging protrusion 22 may be configured to the shape consistent with 112 direction of extrusion of utricule, and such air bag 11 is by direction During the direction extruding of upper cover 2, it can be made air cavity 1120 when compressed by the extruding of supercharging protrusion 22, reduce residual in air cavity 1120 Gas flow, play increase pressure at expulsion effect.

Upper cover 2 for pumping according to embodiments of the present invention, air bag 11 is adapted to project into by being set in upper cover 2 Supercharging protrusion 22 in air cavity 1120, supercharging protrusion 22 can coordinate the compression of air cavity 1120 to reduce residue gas after reasonable moulding The scale of construction, increase pressure at expulsion, this supercharging mode is simple and reasonable for structure, and 2 cost of upper cover is relatively low.

Specifically, as shown in Figure 1, on the direction towards outlet duct 21, the bottom and the bottom of upper cover 2 of supercharging protrusion 22 The distance between surface S gradually increases.That is, on the direction towards outlet duct 21, the height h of supercharging protrusion 22 by It is cumulative big.

It is appreciated that being vented in air cavity 1120 after gas compression towards outlet duct 21, therefore supercharging protrusion 22 is designed Into towards the shape gradually increased on the direction in outlet duct 21, can make pressure at expulsion on the direction towards outlet duct 21 by It is cumulative to add.For the maximum pressure point formed after supercharging adjacent to outlet duct 21, the gas be conducive to after supercharging can be directly from venthole Discharged at road 21.In addition, the extruding that can also avoid supercharging protrusion 22 from interfering utricule 112 is so set.

In certain embodiments, as shown in Figure 1, the internal perisporium in outlet duct 21 is equipped with outgassing groove 214, outgassing groove 214 Suitable for being connected with air cavity 1120, outgassing groove 214 penetrates through downwards upper cover 2 in Fig. 1.Here the setting of outgassing groove 214 is used to coordinate Valve block 1141 is vented to control on air bag 11, and the setting of outgassing groove 214 makes 2 air outlet structure of upper cover more simplify, rationally, can guide Gas is arranged at outgassing groove 214 to outlet duct 21 in air bag 11.

Specifically, as shown in Figure 1, the bottom surface of supercharging protrusion 22 is equipped with the first guide channel for extending to outgassing groove 214 221.The utricule 112 of so air bag 11 be extruded and towards outlet duct 21 direction supercharging when, the air-flow of supercharging can be from first Guide channel 221 directs into outgassing groove 214, therefore the first guide channel 221 makes exhaust more smooth.

More specifically, as shown in Figure 1, the side of the axis towards outlet duct 21 of supercharging protrusion 22 is led equipped with second Approaching channel 222, the both ends of the second guide channel 222 are connected with the first guide channel 221 and outgassing groove 214 respectively.In this way, the capsule of air bag 11 Body 112 be extruded and towards outlet duct 21 direction supercharging when, the air-flow of supercharging can be successively from the first guide channel 221, second Then 222 row of guide channel is oriented to outlet duct 21 to outgassing groove 214 from outgassing groove 214.Therefore the setting of the second guide channel 222 2 smooth exhaust of upper cover can further be made.

Further, as shown in Figure 1, being equipped with guiding muscle 215 in outgassing groove 214.On the one hand guiding the setting of muscle 215 can rise To the effect of support valve block 1141, on the other hand enable the air-flow of outgassing groove 214 along guiding 215 row of muscle to outlet duct 21.

In addition, can outgassing groove 214 be set wider, corresponding 1141 meeting of valve block to ensure capacity in some pumpings More wider than outgassing groove 214, wide outgassing groove 214 is so that valve block 1141 easily falls into outgassing groove 214 and cannot seal gas Groove 214.Therefore guiding muscle 215 is set in outgassing groove 214, can prevent from being absorbed in valve block 1141 because outgassing groove 214 is wide The problem of deformation causes pumping airtight bad.

Specifically, guide muscle 215 along gas stream outgoing direction to extend, as shown in Figure 1, the extending direction of guiding muscle 215 is with going out The parallel setting of central axis in stomata road 21.

In certain embodiments, as shown in Figure 1, on the direction away from supercharging protrusion 22, outlet duct 21 includes at least The hole section 211 that two cross-sectional areas are sequentially reduced, distance are pressurized the part structure between the nearest two neighboring hole section 211 of protrusion 22 Into water conservancy diversion step 212.Here, the cross-sectional area of hole section 211 is referred on the section of the central axis of the hole section 211 Area.

In this way, in air-flow discharge direction, the cross-sectional area in outlet duct 21 is sequentially reduced, and can gradually, smoothly be increased The ejection flow velocity of air-flow.And the cross-sectional area in outlet duct 21 ensure that air-flow increases towards at least reducing in discharge direction The stability of speed, while can also play good guide functions.

And water conservancy diversion step 212 is set in the outlet duct 21 of upper cover 2, it can prevent reflux gas from directly impacting pumping The problems such as 100 air bleeding valve, avoiding reflux gas from washing the valve block 1141 of exhaust open causes gas leakage.Here, the row of pumping 100 The structure of air valve and its valve block 1141 is by being described in detail in the explanation of 100 structure of pumping, details are not described herein again below.

Upper cover 2 according to the above embodiment of the present invention, it is simple and reasonable, pressure at expulsion and exhaust flow rate can be improved, together When be vented it is steady, smooth.

Pumping 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 6.

Pumping 100 according to embodiments of the present invention, as shown in Figure 4 and Figure 5, pumping 100 include motor 3, offset assembly 5, Air bag 11 and upper cover 2, upper cover 2 are the upper cover 2 for pumping according to the above embodiment of the present invention.

In certain embodiments, in Fig. 4 and Fig. 5 and Fig. 3, upper cover 2, support base in pumping 100, air bag 11, air bag Seat 6, connecting bracket 12, offset assembly 5, base 4 and motor 3 are set gradually from top to bottom.

Wherein, base 4 is located on the end face of motor 3, and motor shaft 31 passes through the bottom wall of base 4 and extend into base 4.Partially Heart component 5 is located in base 4, and offset assembly 5 includes eccentric wheel 51 and the inclined shaft 52 being located on eccentric wheel 51, eccentric wheel 51 and electricity Arbor 31 is connected, and the tie point of inclined shaft 52 and eccentric wheel 51 deviates the center of rotation axis of eccentric wheel 51.Wherein, away from eccentric On the direction of wheel 51, the center of rotation axis that inclined shaft 52 is increasingly towards eccentric wheel 51 tilts extension.Here, such as Fig. 4 and Fig. 5 institutes Show, inclined shaft 52 and eccentric wheel 51 can be respectively separately machined part；Again as shown in fig. 6, inclined shaft 52 can be formed as one with eccentric wheel 51 Body formed part.

Air bag seat 6 is covered on base 4, and air bag seat 6 is equipped with the matching hole 61 penetrated through in a thickness direction.Piston component Air bag 11 is located on air bag seat 6 in 1, and the utricule 112 of air bag 11 is placed in matching hole 61, and casing 113 may pass through corresponding cooperation Hole 61.Connecting bracket 12 is located between air bag seat 6 and offset assembly 5 in piston component 1, and connecting bracket 12 is connected with inclined shaft 52, And the connection leg 121 in connecting bracket 12 is engaged with casing 113.Wherein, one end of the remote eccentric wheel 51 of inclined shaft 52 is matched somebody with somebody Close in the connecting hole 1231 of connecting bracket 12.

Upper cover 2 is covered on air bag seat 6, and the pedestal disk 111 of air bag 11 is folded between upper cover 2 and air bag seat 6. In the example of Fig. 4, the periphery of upper cover 2 extends downwardly out the first fastener 23, and the periphery of base 4 is equipped with the second fastener 41, the One fastener 23 is fastened on the second fastener 41, so that upper cover 2 can be compacted air bag seat 6 and air bag 11.

Specifically, as shown in figure 3, air bag 11 includes pedestal disk 111, is located at the utricule 112 and valve block of 111 both sides of pedestal disk 1141, limit in utricule 112 being penetrated through towards the side of pedestal disk 111 to form the air cavity 1120 of opening 1122, valve block 1141 adjacent openings 1122 are set, and upper cover 2 is covered on pedestal disk 111, and upper cover 2 is equipped with outlet duct 21, and valve block 1141 is stretched Enter into outlet duct 21, the internal perisporium in valve block 1141 and outlet duct 21 forms the air bleeding valve of pumping 100.

When motor 3 operates, offset assembly 5 alternately extrudes and stretches utricule 112, the valve block when utricule 112 is stretched 1141 are fitted in block air cavity 1120 on the internal perisporium in outlet duct 21, the gas in air cavity 1120 when utricule 112 is extruded Valve block 1141 can be washed open to circulate, upper cover 2 is equipped with the supercharging protrusion 22 extending into air cavity 1120.

Pumping 100 according to embodiments of the present invention, can be extend into the air cavity 1120 of air bag 11 by being set in upper cover 2 Supercharging protrusion 22, supercharging protrusion 22 can coordinate the compression of air cavity 1120 to increase pressure at expulsion, this increasing after reasonable moulding Pressure mode is simple and reasonable for structure, and 2 cost of upper cover is relatively low.

In certain embodiments, as shown in Figure 1, on the direction away from supercharging protrusion 22, outlet duct 21 includes at least The hole section 211 that two cross-sectional areas are sequentially reduced, distance are pressurized the part structure between the nearest two neighboring hole section 211 of protrusion 22 Into water conservancy diversion step 212.The setting of water conservancy diversion step 212 makes the cross-sectional area in venthole road 21 towards at least contracting in discharge direction It is small, it ensure that the stability of airflow speed increasing, while can also play good guide functions.

Specifically, as shown in figure 4, the distance between water conservancy diversion step 212 and valve block 1141 L are 0.3mm~3mm.At this In distance range, the gas that outlet duct 21 is flowed back will not raise valve block 1141, so as to avoid reflux gas by exhaust Valve block 1141 is washed open the problems such as causing gas leakage.

In certain embodiments, as shown in figure 3, utricule 112 is multiple, multiple utricules 112 are each provided at the same of pedestal disk 111 Side, the side of the remote pedestal disk 111 of each utricule 112 are equipped with a casing 113, connecting bracket 12 be equipped with respectively with The one-to-one multiple connection legs 121 of multiple casings 113.

In this way, after 12 activity a cycle of connecting bracket, multiple utricules 112 successively complete an air inlet pressure on air bag 11 Contracting-exhaust process, work efficiency greatly improve, and capacity increases, compact-sized, small, and energy consumption is small.

Specifically, air bag 11 is equipped with multiple utricules 112, and multiple utricules 112 are separated around the centreline space of pedestal disk 111 Arrangement, air bag 11 further include：The valve pipe 114 being located on pedestal disk 111, the tube wall of valve pipe 114 are equipped with multiple remote utricules 112 Direction perforation fracture 1142, each fracture 1142 penetrates through on the thickness direction of tube wall, the two neighboring fracture of valve pipe 114 Part between 1142 forms valve block 1141.In this way, the multiple valve blocks 1141 formed are between the center line of pedestal disk 111 is uniform Separate arrangement.Valve block 1141 is set, and not only beautiful but also easy processing demoulded.

Specifically, after valve pipe 114 extend into outlet duct 21, each valve block 1141 covers an outgassing groove 214, utricule When air cavity 1120 is pressurized by compression in 112, gas can rush at valve block 1141 by outgassing groove 214 in air cavity 1120, then from going out Discharged at stomata road 21.

Alternatively, as shown in figure 3, each reinforcing rib 115 is connected between valve block 1141 and pedestal disk 111, so as to improve Bonding strength between valve block 1141 and pedestal disk 111.The setting of reinforcing rib 115 can prevent valve block 1141 from deforming, and ensure exhaust Valve block 1141 easily resets when valve does not work, so as to play the role of strengthening sealing., would not and pumping air-tightness strengthens Produce excessive noise.Specifically, air bag 11 is integrally formed part, i.e. valve pipe 114, pedestal disk 111, utricule 112 and casing 113 is Part is integrally formed, air bag 11 is overall to be made of flexible pieces such as rubber.

In certain embodiments, as shown in figure 3, connecting bracket 12 includes：Telophragma 122 and terminal pad 123, terminal pad 123 are respectively provided at the opposite sides of telophragma 122 with connection leg 121, wherein, terminal pad 123 is equipped with connecting hole 1231.

In certain embodiments, it is multiple as shown in figure 3, connecting bracket 12 is equipped with convex block 124 in the side towards air bag 11 Connect leg 121 and be spaced apart setting around convex block 124.Namely, convex block 124 be located at connecting bracket 12 towards air bag 11 1 The middle position of side, the setting of convex block 124 help to limit the movable amplitude of connecting bracket 12.In Fig. 4, air bag seat 6 Limiting slot 62 can be equipped with towards the center position of the side of connecting bracket 12, the convex block 124 of connecting bracket 12 can extend into limit In the groove 62 of position, the movable amplitude of connecting bracket 12 can be so limited.

In certain embodiments, as shown in figure 3, limiting the direction opening for being directed away from air bag 11 in connection leg 121 Snout cavity 1210, the second through hole 1211 is formed on the bottom wall of snout cavity 1210.The weight of connecting bracket 12 can be mitigated significantly, First through hole 1121 can be blocked again.

Specifically, as shown in figure 3, when utricule 112 centerline in connect leg 121 centerline in parallel State when, utricule 112 is neither inwardly squeezed nor is pulled outwardly, and first through hole 1121 is staggered with the second through hole 1211 at this time Open.In this way, when air bag 11 and 12 keeping parallelism state of connecting bracket, the intake valve of utricule 112 remains off, i.e. gas The intake valve of capsule 11 is configured to normally off, ensure that the controllability of 100 jet of pumping.

In certain embodiments, piston component 1 further includes breather check valve, and breather check valve is located in air bag 11, with control Gas processed can avoid gas backstreaming from the second through hole 1211 towards 1120 one-way flow of air cavity, the setting of breather check valve, ensure Pressure at expulsion.

In certain embodiments, as shown in Figure 1, one end cross-sectional area towards air bag 11 in outlet duct 21 increases with shape Into flaring 213, the covering of valve pipe 114 flaring 213.Here, the covering of valve pipe 114 flaring 213 refers to valve pipe 114 in outlet duct Projection on 21 inner peripheral surface can be completely covered flaring 213, and fracture 1142 is not overlapped with flaring 213 on valve pipe 114 Part.

The setting of flaring 213, on the one hand can be easy to valve block 1141 preferably to extend into outlet duct 21, with fitting , can direction when on the other hand 112 interior air-flow of utricule of air bag 11 can be easy to be pressurized by compression on the internal perisporium in outlet duct 21 The direction discharge of flaring 213, so as to the direction guiding by air-flow towards outlet duct 21.

The structure of pumping 100 in the embodiment of the present invention one is described referring to Fig. 1, Fig. 3 and Fig. 4.

On direction from top to bottom, air bag 11 includes valve pipe 114, pedestal disk 111, utricule 112 and the set set gradually Pipe 113, utricule 112 are three, and three utricules 112 are equidistantly arranged.Pedestal disk 111 is formed as general triangular, three utricules 112 It is respectively provided on three angles of pedestal disk 111, arc transition processing is made at each angle of pedestal disk 111.

It is valve pipe 114 between the air cavity opening 1122 of three utricules 112, the tube wall of valve pipe 114 is equipped with three fractures 1142 to form three valve blocks 1141.In figure 3, the bottom of each air cavity 1120 is equipped with a first through hole 1121, each The inner side of valve block 1141 is connected with reinforcing rib 115 between pedestal disk 111.

On direction from top to bottom, connecting bracket 12 includes the connection leg 121, telophragma 122 and company set gradually Disk 123 is connect, connection leg 121 is three, and three casings 113 that three connection legs 121 correspond to air bag 11 respectively are set.Each The second through hole 1211 is equipped with connection leg 121, the second through hole 1211 is staggered with first through hole 1121, so as to connect leg 121 when parallel with 113 axis of casing, and connection leg 121 can block completely.Connecting bracket 12 further includes connection rib 125, even Rib 125 is connected between terminal pad 123 and the opening for connecting leg 121.

Cover and outlet duct 21 is equipped with the upper cover 2 on air bag 11, outlet duct 21 is between three utricules 112. The internal perisporium in outlet duct 21 is equipped with outgassing groove 214 unlimited downwards, and outgassing groove 214 is for three and evenly-spaced.Valve pipe 114 extend into outlet duct 21, and each valve block 1141 covers an outgassing groove 214 on valve pipe 114.

The basal surface S of upper cover 2 is equipped with three supercharging protrusions 22, and raised 22 pairs of three superchargings Dui Ying not an outgassing groove 214 are set, and each supercharging protrusion 22 is equipped with first guide channel 221 and second guide channel 222.

The course of work of pumping 100 is：After motor 3 is powered, connecting bracket 12 is acted on by offset assembly 5 and put according to certain rules It is dynamic.Three connection legs 121 are arranged in connecting bracket 12 respectively along towards the direction of air bag 11 and the side away from air bag 11 To making back and forth movement.

If if in certain moment, first 121 activity of connection leg first through hole 1121 and the company in minimum point, air bag 11 Connect the second through hole 1211 on leg 121 to connect, air pressure is low in the air cavity 1120 of corresponding air bag 11, and gas can be inhaled into base 4 In air cavity 1120.At this time, second connection leg 121 is in an intermediate position, and the 3rd connection leg 121 is in extreme higher position, Air is compressed in the corresponding utricule 112 of 3rd connection leg 121, and the air cavity 1120 of the utricule 112 is because of breather check valve Limit and can not be discharged at first through hole 1121, compressed gas can be discharged by outlet duct 21 at this time.

Compressed gas discharge process is as follows：Raised when utricule 112 is extruded by the extruding air pressure of supercharging protrusion 22, boosting Air-flow can flow to corresponding outgassing groove 214 from along the first guide channel 221, the second guide channel 222.Then compressed gas is pushed open accordingly Gap is produced between the internal perisporium in valve block 1141, valve block 1141 and outlet duct 21, so that gas can be discharged from outlet duct 21, Compressed gas forms high pressure gas and sprays.If 3 rotating speed of motor is higher, three 1120 air inlets of air cavity, exhaust velocity also can be faster, spray Gas gas output is bigger, and outlet air pressure is also higher.

When air bag 1 is extruded and when compressing the gas in air cavity 1120, due to the effect of supercharging protrusion 22 so that air cavity Remaining gas flow is reduced in 1120, so as to increase the atmospheric pressure value got of pumping 100.

After gas is from discharge between the internal perisporium in valve block 1141 and outlet duct 21, arranged under the action of reinforcing rib 115 The valve block 1141 of air valve is more prone to reset so that valve block 1141 can be fitted on the internal perisporium in outlet duct 21 again.

When pumping 100 is stopped and during board packing state, would generally be filled in exterior gas pressure lower production well road 21 Full gas, at this time since the effect of water conservancy diversion step 212, external pressure will not directly impact the valve block 1141 of air bleeding valve, also just not Valve block 1141 can be caused to tilt, so as to play the role of sealed external gas, reduce noise.

Wherein, when 100 air-breathing of pumping, gas can be from 2 air inlet of upper cover（Figure does not mark）Into in base 4, with gas The increase of body pressure, gas push the bottom of air cavity 1120 open via the second through hole 1211, and gas enters via first through hole 1121 In air cavity 1120, the valve block 1141 of valve pipe 114 is close to the internal perisporium in outlet duct 21 at this time, realizes gas replenishment process.

In embodiments of the present invention, pumping 100 may also include relief valve, to control pressure at expulsion.

In the description of the present invention, it is to be understood that term " " center ", " height ", " thickness ", " on ", " under ", " perpendicular Directly ", the orientation of the instruction such as " level ", " top ", " bottom ", " interior ", " outer ", " axial direction ", " radial direction ", " circumferential direction " or position relationship are base In orientation shown in the drawings or position relationship, description description of the invention and simplified, rather than instruction or hint are for only for ease of Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this The limitation of invention.

In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, " multiple " are meant that two A or two or more.

In the description of the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be machinery Connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two elements Internal connection or the interaction relationship of two elements.For the ordinary skill in the art, can be with concrete condition Understand the concrete meaning of above-mentioned term in the present invention.

In the description of this specification, the description of reference term " embodiment ", " example " etc. mean to combine the embodiment or Example particular features, structures, materials, or characteristics described are contained at least one embodiment of the present invention or example.At this In specification, schematic expression of the above terms may not refer to the same embodiment or example.Moreover, description is specific Feature, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.

Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not In the case of departing from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this The scope of invention is limited by claim and its equivalent.

Claims (11)

1. a kind of upper cover for pumping, the upper lid is equipped with outlet duct, and the upper cover is used to cover the air bag in pumping On, the air bag has the air cavity towards the upper cover gab, it is characterised in that the upper lid is described equipped with being adapted to project into Supercharging in air cavity is raised.

2. the upper cover according to claim 1 for pumping, it is characterised in that in the direction towards the outlet duct On, the raised bottom of the supercharging and the gradual increase of the distance between the basal surface of the upper cover.

3. the upper cover according to claim 1 for pumping, it is characterised in that the internal perisporium in the outlet duct is equipped with Outgassing groove, the outgassing groove are suitable for connecting with the air cavity.

4. the upper cover according to claim 3 for pumping, it is characterised in that the raised bottom surface of the supercharging, which is equipped with, prolongs Extend the first guide channel of the outgassing groove.

5. the upper cover according to claim 4 for pumping, it is characterised in that the raised direction outlet of the supercharging The side of the axis in duct is equipped with the second guide channel, the both ends of second guide channel respectively with first guide channel and institute Outgassing groove is stated to be connected.

6. the upper cover according to claim 3 for pumping, it is characterised in that guiding muscle is equipped with the outgassing groove.

7. a kind of pumping, the pumping includes motor, offset assembly, air bag and upper cover, and the air bag includes pedestal disk, is located at institute The utricule and valve block of pedestal disk both sides are stated, is limited in the utricule being penetrated through towards the side of the pedestal disk to form opening Air cavity, the valve block sets adjacent to the opening, and the upper cover covered on the pedestal disk, and the upper lid is equipped with outlet Duct, the motor are connected with the offset assembly, and the offset assembly is connected with the utricule, in motor operating when institute State offset assembly and alternately extrude and stretch the utricule, it is characterised in that the upper cover is to appoint according in claim 1-6 The upper cover for pumping described in one, the valve block are extend into the outlet duct, the valve block and the outlet duct Internal perisporium form the air bleeding valve of the pumping, when the utricule is stretched, the valve block is fitted in the outlet duct To block the air cavity on perisporium, when the utricule is extruded, the gas intracavity gas can wash the valve block open to circulate, institute State lid and be equipped with the supercharging protrusion extending into the air cavity.

8. pumping according to claim 7, it is characterised in that on away from the raised direction of the supercharging, the outlet Duct includes at least the hole section that two cross-sectional areas are sequentially reduced, apart from the raised nearest two neighboring hole section of the supercharging Between part form water conservancy diversion step, the distance between the water conservancy diversion step and the valve block are 0.3mm~3mm.

9. pumping according to claim 7, it is characterised in that reinforcement is connected between the valve block and the pedestal disk Muscle.

10. pumping according to claim 7, it is characterised in that the air bag is equipped with multiple utricules, multiple described Utricule surround the center line spaced relation of the pedestal disk, and the air bag further includes：The valve pipe being located on the pedestal disk, institute The tube wall for stating valve pipe is equipped with the fracture that the direction of multiple remote utricules penetrates through, thickness of each fracture in the tube wall Degree penetrates through on direction, and the part between the two neighboring fracture of the valve pipe forms the valve block.

11. pumping according to claim 10, it is characterised in that one end of the direction air bag in the outlet duct is horizontal To form flaring, the valve pipe covers the flaring for sectional area increase.