CN112983791A

CN112983791A - Large flux double-diaphragm hand pump

Info

Publication number: CN112983791A
Application number: CN201911275667.1A
Authority: CN
Inventors: 魏世超; 张凯; 刘明亚; 毕远伟; 杜鹃
Original assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Current assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2021-06-18

Abstract

The invention discloses a large-flux double-diaphragm manual pump which comprises a pump body, wherein two sides of the pump body are hermetically assembled with an end cover, a diaphragm is hermetically assembled between the pump body and each end cover, the pump body, the end covers and the diaphragms on the two sides of the pump body are locked through a pressing mechanism, and each diaphragm is repeatedly deformed by a rocker driving mechanism. The invention adopts a double-diaphragm and double-channel structure, has large delivery flow of the pump, and is suitable for outdoor emergency rescue.

Description

Large flux double-diaphragm hand pump

Technical Field

The invention relates to the technical field of diaphragm pumps, in particular to a large-flux double-diaphragm manual pump.

Background

Natural disasters occur frequently in China, and when the disasters occur, the damage to a drinking water supply system and the deterioration of the quality of life drinking water can be caused under most conditions, including various bacteria, microorganisms, organic matters, heavy metals and the like in water, and when the pollution exceeds the bearing capacity of a human body, the water-borne diseases can be caused, and the life safety and social stability of common people can be threatened in serious cases.

The emergency disaster relief water supply equipment commonly used at the present stage comprises a water truck, water purification equipment, air-drop bottled water and the like, but the implementation difficulty is high under the conditions of power interruption, road damage and the like, and effective guarantee is lacked. Therefore, the manual emergency water supply scheme is a feasible scheme for disaster area rescue under severe disaster conditions.

Manual emergency water supply equipment needs to meet the requirement of drinking water supply for people and rescue workers in disaster areas, and a manual pump is a key device. The manual pump needs to have the characteristics of large flux, small resistance, lightness and portability so as to meet the application requirements under the complex conditions of disaster areas. The existing manual pump mainly comprises a piston pump and a diaphragm pump, has the problems of small flow, large operation resistance, complex structure, heavy weight and inconvenience in carrying and moving, and is difficult to realize application in disaster relief and emergency work.

Disclosure of Invention

The invention aims to provide a large-flux double-diaphragm manual pump aiming at the problems that a manual pump in the prior art has small resistance and large flux and is not suitable for emergency rescue and disaster relief.

The technical scheme adopted for realizing the purpose of the invention is as follows:

the utility model provides a two diaphragm hand pumps of big flux, includes pump body, the both sides of pump body are all sealed to be equipped with an end cover, pump body and each all sealed assembly diaphragm between the end cover, the end cover and the diaphragm of pump body and both sides pass through hold-down mechanism locking, each the diaphragm receives the reciprocating deformation of rocker actuating mechanism, wherein:

the pump body and the diaphragms on the two sides are enclosed to form a sealed driving cavity, a feeding cavity and a discharging cavity which are not communicated with the driving cavity, the driving end of the rocker driving mechanism is positioned in the driving cavity, and a feeding hole communicated with the feeding cavity and a discharging hole communicated with the discharging cavity are formed in the pump body;

each end cover is internally provided with a cavity, a feeding channel and a discharging channel which are respectively communicated with the cavity, each cavity is connected with the corresponding diaphragm in a sealing way to form a closed cavity for storing fluid, the volume of the closed cavity is changed along with the deformation of the diaphragm, each feeding channel is communicated with the corresponding closed cavity through a feeding one-way valve fixed on the corresponding diaphragm, and each discharging channel is communicated with the corresponding closed cavity and the discharging cavity through a discharging one-way valve fixed on the corresponding diaphragm.

In the technical scheme, the feed inlet and the discharge outlet are respectively arranged on two sides of the pump body along the fluid conveying direction, and the rocker driving mechanism drives the diaphragm to move and deform in the direction perpendicular to the fluid conveying direction.

In the technical scheme, the bottom of the pump body is fixed with a base, and the base is provided with a fixing bolt hole.

In the technical scheme, the pump body, the end cover and the diaphragm are matched in parallel, and the outline of the diaphragm is the same as the outline of the inner side wall of the end cover and the outline of the two side walls of the pump body.

In the technical scheme, the pressing mechanism comprises a pump body positioning lug fixed on the outer side of the pump body, an end cover positioning lug fixed on the end cover, and a threaded connecting rod which penetrates through the pump body positioning lug, the end cover positioning lug and the end cover and is fastened by locking nuts at two ends.

In the technical scheme, two side wall surfaces of each of the driving cavity, the feeding cavity and the discharging cavity are respectively provided with a side wall concave ring, and the three side wall concave rings are respectively matched and sealed with the three diaphragm convex rings formed on the corresponding surfaces of the diaphragms.

In the technical scheme, each end cover is of a convex shell structure, end cover concave rings are formed on the side wall surfaces of each concave cavity, the feeding channel and the discharging channel, and the three end cover concave rings are matched and sealed with the three diaphragm convex rings formed on the corresponding surfaces of the diaphragms.

In the technical scheme, the rocker driving mechanism comprises a rocker structure, a coupling member and a supporting chuck I, wherein one end of the rocker structure is located in the driving cavity, the other end of the rocker structure penetrates out of the pump body, the coupling member is driven by the rocker structure to move in an axial reciprocating mode, and the supporting chuck I is fixed at two ends of the coupling member respectively to drive the corresponding diaphragms to deform.

In the above technical scheme, the rocker driving mechanism includes a rocker structure with one end located in the driving cavity and the other end penetrating out of the pump body, a coupling member driven by the rocker structure to reciprocate axially, a supporting chuck I fixed at two ends of the coupling member respectively to drive the corresponding diaphragm to deform in the forward direction, and a supporting chuck II fixed on the end cover through an elastic supporting connecting rod to drive the corresponding diaphragm to deform in the reverse direction, wherein the supporting connecting rod, the supporting chuck I and the supporting chuck II are coaxially assembled.

In the technical scheme, a positioning hole is formed in the center of the concave cavity of each end cover to fix one end of the supporting connecting rod, and the other end of the supporting connecting rod sequentially penetrates through center holes formed in the supporting chuck I, the diaphragm and the supporting chuck II to be fixed on the end part of the coupling.

In the above technical scheme, support chuck I and support chuck II are the same disc structure of shape size, all include chuck A face and chuck B face, wherein each chuck A face is towards the diaphragm, support chuck I's chuck B face is formed with the confession coupling tip male cavity, support chuck II's chuck B face is formed with the confession support connecting rod tip male cavity.

In the above technical scheme, the main body of the A surface of the chuck is a plane, the edge of the A surface of the chuck is of an annular curved surface structure, and the B surface of the chuck is of a radial hub structure.

In the above technical solution, each diaphragm is formed with a unidirectional circular protrusion to allow forward and reverse deformation.

In above-mentioned technical scheme, each the two sides of diaphragm are diaphragm A face and diaphragm B face respectively, and wherein one-way ring is protruding to be formed on the diaphragm A face, diaphragm B face is towards pump body one side, diaphragm A face with support chuck II and coordinate with one heart, diaphragm B face with support chuck I and coordinate with one heart.

In the technical scheme, the rocker structure comprises a driving piece and a manual rocker fixed at the top of the driving piece, the driving piece is rotatably connected with the pump body through a rotating mechanism, the bottom of the driving piece is a driving end, the driving end is located in the driving cavity and fixedly connected with the coupling piece, and the top of the driving piece penetrates out of a top opening formed in the pump body.

In the above technical solution, the rotating mechanism includes two positioning parts symmetrically fixed on two sides of the top opening and a positioning bolt passing through the positioning parts and the driving part and fixed at two ends by nuts.

In the technical scheme, the driving end is of a saddle-shaped structure, the coupling piece is located in a middle gap of the saddle-shaped structure, and the middle of the coupling piece is fixed on the saddle-shaped structure through bolts and nuts.

In the technical scheme, two coaxial through holes are formed in the saddle-shaped structure, a coupling through hole is formed in the center of the coupling piece along the radial direction of the coupling through hole, and a fixing bolt penetrates through the through holes and the coupling through hole to be matched with a nut to fix the saddle-shaped structure and the coupling piece together.

In the above technical solution, the manual rocker is a slender rod, the top of the manual rocker is in a handle shape, and the bottom of the manual rocker is inserted into a slot formed at the top of the driving member.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention adopts a double-diaphragm and double-channel structure, and the delivery flow of the pump is large and can reach 4m³The flow rate is far higher than the flow rate range of the prior manual pump with the same type (the flow rate of the prior manual pump with the same size is 0.1-0.5 m)³And h), the water supply requirement under the emergency condition can be met.

2. The invention adopts a rocker driving structure, the design of manual rocker driving conforms to the principle of human engineering, the operation is time-saving and labor-saving, the resistance is small, and the operation is convenient. Firstly, the structural design of the manual pump driving mechanism accords with human engineering, and rapid fatigue cannot be caused by personnel operation; secondly, the stroke of a driving structure in the pump body is small, the driving structure is amplified by a manual rocker, the force arm at the operating end is large, the stroke is long, and the force required for rocking the rocker is small; thirdly, the resistance in the driving mechanism mainly concentrates the friction generated by the rotating mechanism, and the rolling friction generated in the form of a rotating shaft is smaller than the resistance caused by surface friction; and finally, the support connecting rod is an elastic connecting rod with pre-compression, and when the manual rocker driving mechanism is restored to the original position from the deformed position, the elastic action is favorable for the driving mechanism to automatically return, so that the external operation force of personnel is reduced.

3. The invention has simple structure, can be manually disassembled, does not need auxiliary tools and is convenient for maintenance and repair after outdoor use. In addition, the invention has small volume and light weight, is convenient to carry and carry, and meets the use requirement of outdoor emergency rescue equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of a hand pump.

Fig. 2 is an exploded view of a manual pump configuration.

Fig. 3 is a schematic structural view of the pump body.

FIG. 4 is a schematic view of an end cap configuration

FIG. 5 is a schematic view of the structure of the A side of the diaphragm

FIG. 6 is a schematic view of the structure of the B surface of the support chuck

FIG. 7 is a schematic view of the driving member structure

FIG. 8 is a schematic view of the structure of the rocker driving mechanism

FIG. 9 is a sectional view of the structure of the hand pump

In the figure: 1-end cap, 101-cavity, 102-feeding channel, 103-discharging channel, 104-end cap concave ring, 105-end cap positioning lug, 106-center positioning hole, 2-supporting connecting rod, 31-supporting chuck I, 32-supporting chuck II, 301-annular curved surface, 302-radial hub, 303-cavity, 4-diaphragm, 401-diaphragm body, 402-feeding one-way valve, 403-discharging one-way valve, 404-diaphragm convex ring, 405-one-way circular ring bulge, 406-positioning clamping groove, 5-pump body, 501-pump body, 502-base, 503-feeding hole, 504-a feeding cavity, 505-a discharging hole, 506-a discharging cavity, 507-a driving cavity, 508-a fixing hole, 509-a pump body positioning lug ring, 510-a top opening, 511-a side wall concave ring, 512-a positioning bolt, 6-a threaded connecting rod, 7-a coupling piece, 8-a driving piece, 801-a slot, 802-a through positioning through hole, 803-a through hole, 9-a locking nut, 10-a manual rocker and 11-a closed cavity.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following embodiments take the position close to the center of the pump body as the inner position and take the position close to the end cover as the outer position.

Example 1

The utility model provides a two diaphragm hand pumps of big flux, includes pump body 501, the both sides of pump body 501 are all sealed to be equipped with an end cover 1, pump body and each all sealed assembly a diaphragm 4 between the end cover 1, pump body 501 and the end cover 1 and the diaphragm 4 of both sides pass through hold-down mechanism locking, each diaphragm 4 receives the reciprocal deformation of rocker actuating mechanism, wherein:

a sealed driving cavity 507, a feeding cavity 504 and a discharging cavity 506 which are not communicated with the driving cavity 507 are formed between the pump body 501 and the diaphragm 4, the driving end of the rocker driving mechanism is located in the driving cavity 507, and a feeding hole 503 communicated with the feeding cavity 504 and a discharging hole 505 communicated with the discharging cavity 506 are formed in the pump body 501;

a cavity 101, a feeding channel 102 and a discharging channel 103 which are respectively communicated with the cavity 101 are formed in each end cover 1, a closed cavity 11 for storing fluid is formed between each cavity 101 and the corresponding membrane 4, the volume of the closed cavity 11 changes along with the deformation of the membrane 4, each feeding channel 102 communicates the feeding cavity 504 with the corresponding closed cavity 11 through a feeding one-way valve 402 fixed on the corresponding membrane 4, and each discharging channel 103 communicates the corresponding closed cavity 11 with a discharging cavity 506 through a discharging one-way valve 403 fixed on the corresponding membrane 4.

Each diaphragm 4 comprises a diaphragm body 401, and a feed check valve 402 and a discharge check valve 403 which are symmetrically arranged on the diaphragm body 401, and the feed check valve 402 on each diaphragm 4 is arranged between the feed cavity 504 of the pump body and the feed channel 102 of the corresponding end cover and is only used for controlling the liquid to be conveyed to enter the closed cavity 11 from the feed cavity 504. The closed cavity 11 is used for storing the conveyed fluid in the working process. The discharge one-way valve 403 is fitted between the discharge cavity 506 of the pump body and the discharge channel 103 of the corresponding end cap, and is only used for controlling the discharge of the liquid to be delivered from the closed cavity 11 to the discharge cavity 506. The feeding cavity 504 is used for communicating the corresponding closed cavity 11 with the feeding port, and the discharging cavity 506 is used for communicating the corresponding closed cavity 11 with the discharging port.

Preferably, the feed opening 503 and the discharge opening 505 are respectively disposed on two sides of the pump body 501 along the fluid conveying direction, and the rocker driving mechanism drives the membrane 4 to move and deform in the direction perpendicular to the fluid conveying direction.

The reciprocating deformation of the two diaphragms 4 causes the volumes of the two closed cavities 11 to be alternately expanded and reduced, so that the suction and the discharge of the conveyed fluid are formed, and the conveying of the fluid is realized.

Specifically, the two end covers are respectively a first end cover and a second end cover, the two diaphragms are respectively a first diaphragm and a second diaphragm, a cavity 101 of the first end cover and a sealed cavity 11 formed by sealing the first diaphragm are first cavities, a cavity 11 formed by sealing the second end cover cavity 101 and the second diaphragm is a second cavity, a feeding channel and a discharging channel formed on the first end cover are respectively a first feeding channel and a first discharging channel, and a feeding channel and a discharging channel formed on the second end cover are respectively a second feeding channel and a second discharging channel.

When the rocker driving mechanism drives the first diaphragm to approach the closed first chamber, the spatial volume of the first chamber is reduced, the pressure is increased, the discharge one-way valve 403 on the first diaphragm is opened, the feed one-way valve 402 is closed, the fluid sequentially passes through the first chamber, the first discharge channel, the discharge one-way valve 403 on the first diaphragm and the first discharge chamber to be discharged from the discharge port 505, then the rocker driving mechanism drives the second diaphragm to approach the second chamber, the first diaphragm is simultaneously driven to deform in the direction opposite to the deformation, the spatial volume of the first chamber is increased, the pressure is reduced (the feed one-way valve 402 on the first diaphragm is opened, the discharge one-way valve 403 is closed, the fluid sequentially passes through the feed port 503, the feed chamber 504, the feed one-way valve 402 on the first diaphragm and the first feed channel 102 to enter the first chamber), and at the same time, the spatial volume of the second chamber is reduced as the second diaphragm approaches the second chamber, the pressure is increased, the discharge one-way valve 403 on the second membrane is opened, the feed one-way valve 402 is closed, and the fluid is discharged from the discharge port 505 through the second chamber, the second discharge channel 103, the discharge one-way valve 403 on the second membrane and the discharge cavity 506 in sequence. Therefore, along with the reciprocating motion of the rocker driving mechanism, the deformation of the first diaphragm and the second diaphragm causes the volumes of the two first chambers and the two second chambers to be alternately enlarged and reduced, the suction and the discharge of the conveyed fluid are formed, and the conveying of the fluid is realized.

Example 2

Preferably, a base 502 is fixed to the bottom of the pump body 501, and the base 502 is provided with a fixing bolt hole. The pump body 501 and the base 502 constitute the pump body 5 of the hand pump of the present invention, and the base 502 is used for fixing the pump body 5 of the present invention.

Preferably, the pump body 501, the end cover 1 and the diaphragm 4 are matched in parallel, and the outline of the diaphragm 4 is the same as the outline of the inner side wall of the end cover 1 and the outline of the side wall of the pump body 501. The three components are matched to form a closed cavity.

Preferably, the pressing mechanism includes a pump body positioning lug 509 fixed on the outer side of the pump body 501, an end cap positioning lug 105 fixed on the end cap 1, and a threaded connecting rod 6 passing through the pump body positioning lug 509 and the end cap positioning lug 105 and having both ends fastened by a lock nut 9.

Pump body location earrings 509 is provided with two for the symmetry, for closed location earrings, is formed with the confession on each pump body location earrings 509 the closed through-hole that threaded connection rod 6 passed, end cover location earrings 105 symmetry is equipped with two, for non-closed location earrings, each end cover location earrings 105 is formed with the confession the open through-hole that threaded connection rod 6 passed. (the design that closed hole and non-closed hole combined together, be convenient for install the location fast) threaded connection pole 6 both ends all are provided with the screw thread, pass pump body location earrings 509 and end cover location earrings 105, and both ends are fastened through lock nut 9, realize the fastening of pump body 501 and both sides diaphragm 4 and end cover 1. The locking nut 9 is a nut which can be manually disassembled and assembled.

Preferably, the two side walls of each of the driving chamber 507, the feeding chamber 504 and the discharging chamber 506 are provided with side wall concave rings 511 for matching and sealing with the diaphragm convex rings 404 formed on the corresponding surfaces of the diaphragm 4. Thus, the pump body 501 and the diaphragm 4 are convenient to position and assemble, and a sealing effect is achieved. Three diaphragm collars 404 are provided on respective faces of each diaphragm 4, corresponding to side wall recesses 511 on side wall faces of the drive chamber 507, the feed chamber 504 and the discharge chamber 506.

Preferably, each end cap 1 is a convex shell structure, and an end cap concave ring 104 is formed on the side wall surface of each cavity 101, the feed channel 102 and the discharge channel 103, and the end cap concave ring 104 is matched and sealed with a diaphragm convex ring 404 formed on the corresponding surface of the diaphragm 4. This facilitates the positioning and assembly of the end cap 1 and the diaphragm 4 and provides a seal. Three diaphragm collars 404 are provided on the respective faces of each diaphragm 4, corresponding to the end cap collars 104 on the side wall faces of the cavity 101, feed channel 102 and discharge channel 103.

Example 3

The rocker driving mechanism comprises a rocker structure, a coupling member 7 and a supporting chuck I31, wherein one end of the rocker structure is located in the driving cavity 507, the other end of the rocker structure penetrates out of the pump body 501, the coupling member 7 is driven by the rocker structure to move in a reciprocating mode along the axial direction, and the supporting chuck I31 is fixed at two ends of the coupling member 7 respectively to drive the corresponding diaphragm 4 to deform.

Manually shake the top of rocker structure, rocker structure drive shaft coupling 7 along axial reciprocating motion, the shaft coupling is cylindrical, and when shaft coupling 7 drive support chuck I31 axial displacement, this support chuck I31 promoted diaphragm 4 and takes place the deformation, corresponds cavity 101 volume change, promotes the fluid flow. The support chuck I31 may be fixedly connected to the diaphragm 4 and deformed by pushing and pulling the diaphragm 4 when the coupling 7 reciprocates.

Example 4

Except that above push-and-pull makes diaphragm 4 take place deformation, in order to be more laborsaving and make the accurate return of diaphragm 4, this embodiment is different from embodiment 3, increases the reset assembly that supports chuck II and support link and constitute, and is specific:

the rocker driving mechanism comprises a rocker structure, a coupling member 7 and a supporting chuck II32, wherein one end of the rocker structure is located in the driving cavity 507, the other end of the rocker structure penetrates out of the pump body 501, the coupling member 7 is driven by the rocker structure to move in an axial reciprocating mode, the two ends of the coupling member 7 are fixed to drive the corresponding diaphragm 4 to deform in a forward direction (so that the size of the corresponding sealed cavity becomes larger) to support the chuck I31, and the supporting chuck II32 is fixed to correspond to the end cover 1 through an elastic supporting connecting rod 2 and drives the corresponding diaphragm 4 to deform in a reverse direction (so that the size of the corresponding sealed cavity becomes larger), and the supporting connecting rod, the supporting chuck I and the supporting.

Specifically, two support chuck I are first support chuck I and second support chuck I respectively, two support chuck II are first support chuck II and second support chuck II respectively, two support connecting rods are first support connecting rod and second support connecting rod respectively, first support chuck I, first support chuck II and first support connecting rod correspond and set up in pump body one side, second support chuck I, second support chuck II and second support connecting rod correspond and set up at pump body opposite side.

When 7 drive first support chuck I of shaft coupling are close to first end cover and move, first support chuck II syntropy moves, elastic first support connecting rod compression, first support chuck I promotes first diaphragm and takes place forward deformation, first cavity space reduces, when 7 drive second support chuck I of shaft coupling are to being close to second end cover and moving, the second diaphragm takes place forward deformation, first cavity space reduces, first support connecting rod resumes deformation simultaneously, first support chuck II moves to one side of keeping away from corresponding end cover, first support chuck II promotes first diaphragm and takes place reverse deformation, first cavity space increases.

The resetting assembly can (1) ensure that the diaphragm can be naturally deformed in the reciprocating motion and accurately returns to the initial position; (2) the pre-spring action of the support link contributes to a reduction in the operating resistance.

Preferably, a positioning hole is formed in the center of the cavity 101 of the end cap 1 to fix one end of the support link 2, and the other end of the support link 2 sequentially passes through center holes formed in the support chuck I, the diaphragm and the support chuck II to be fixed on the end of the coupling 7. The positioning hole can be matched with the supporting connecting rod to play a role in positioning and supporting

Preferably, the support chuck I31 and the support chuck II32 are not of a disc-shaped structure with the same shape and size, and each of the chuck a and the chuck B includes a chuck a surface facing the diaphragm 4, the chuck B surface of the support chuck I31 is formed with a cavity 303 for inserting the end of the coupling 7, and the chuck B surface of the support chuck II32 is formed with a cavity for inserting the end of the support link 2.

The cavity 303 or the cavity is rectangular or circular and is formed at the center of the support chuck I or the support chuck II. The coupling 7, the supporting chuck I31, the diaphragm 4, the supporting chuck II32 and the elastic supporting connecting rod 2 are coaxially matched and assembled and reciprocate together with the coupling 7.

Preferably, the main body of the chuck surface a is a plane, the edge is an annular curved surface structure 301, and the chuck surface B is a radial hub structure 302.

Preferably, each diaphragm is formed with a unidirectional circular protrusion 405 to deform the diaphragm in forward and reverse directions. The one-way annular protrusion 405 is directed to one side of the end cap.

Preferably, the two surfaces of each diaphragm are a diaphragm a surface and a diaphragm B surface, respectively, wherein the one-way circular protrusion 405 is formed on the diaphragm a surface, the diaphragm B surface faces one side of the pump body, the diaphragm a surface is concentrically matched with the support chuck II32, and the diaphragm B surface is concentrically matched with the support chuck I31.

The diaphragm A surface is provided with an annular positioning clamping groove 406 for fixing the support chuck I, and the diaphragm B surface is provided with an annular positioning clamping groove 406 for fixing the support chuck II. The support chuck I and the support chuck II both function to support and drive the membrane 4.

Example 5

In order to reduce the friction force of the driving rocker, the rocker structure comprises a driving part 8 and a manual rocker 10 fixed on the top of the driving part 8, the driving part 8 is rotatably connected with the pump body 501 through a rotating mechanism, the bottom of the driving part 8 is a driving end and is located in the driving cavity 507 and fixedly connected with the coupling part 7, and the top of the driving part 8 penetrates through a top opening 510 formed on the pump body 501.

The top opening 510 forms a space for the driving member 8 to swing. The driving piece 8 is rotatably connected with the pump body 501 through a rotating mechanism, so that friction force in a driving process can be reduced, the rotating friction force is small, and manpower is saved.

Preferably, the rotating mechanism includes two positioning members symmetrically fixed on both sides of the top opening 510 and a positioning bolt 512 passing through the positioning members and the driving member 8 and fixed by a nut.

The positioning pieces are provided with two positioning pieces which are respectively positioned at two sides of the driving piece 8, each positioning piece is provided with a fixing hole 508, the middle part of the driving piece 8 is provided with a positioning through hole 802, and a positioning bolt penetrates through the fixing holes 508 and the end parts of the positioning through holes 802 and is fixed by nuts.

The handle end of the manual rocker 10 is reciprocated along the direction perpendicular to the fluid conveying direction, and the positioning bolt connection is used as a shaft to drive the driving piece 8 to reciprocate in the same way.

Preferably, the driving end is of a saddle-shaped structure, the coupling member 7 is located in a gap in the middle of the saddle-shaped structure, and the middle of the coupling member 7 is fixed to the saddle-shaped structure through bolts and nuts.

Two coaxial through holes 803 are formed on the saddle-shaped structure, a coupling through hole 701 is formed at the center of the coupling 7 along the radial direction, and a fixing bolt passes through the through hole 803 and the coupling through hole 701 to be matched with a nut to fix the saddle-shaped structure and the coupling 7 together.

Preferably, the top of the manual rocker 10 is in a handle shape, so that manual operation is facilitated.

Preferably, the manual rocker 10 is an elongated rod, the bottom of which is inserted into a slot formed at the top of the driving member 8. The slot 801 is formed in the center of the top end of the driving part 8 by grooving in the axial direction, during assembly, the driving part 8 penetrates through a hole in the top of the pump body to place the middle lower part in a driving cavity of the pump body, and the middle through hole is matched with two driving part fixing holes 508 symmetrically formed in the top end of the pump body through fixing bolts to form a driving shaft. The manual rocker 10 is detachable, convenient to carry and suitable for field emergency.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. Big two diaphragm hand pump of flux, its characterized in that, including pump body, the both sides of pump body are all sealed to be equipped with an end cover, pump body and each all sealed assembly a diaphragm between the end cover, the end cover and the diaphragm of pump body and both sides pass through hold-down mechanism locking, each the diaphragm receives the reciprocating deformation of rocker actuating mechanism, wherein:

2. The large-flux double-diaphragm manual pump according to claim 1, wherein the feed inlet and the discharge outlet are respectively arranged on two sides of the pump body along a fluid conveying direction, and the rocker driving mechanism drives the diaphragm to move and deform in a direction perpendicular to the fluid conveying direction.

3. The large-flux double-diaphragm manual pump according to claim 1, wherein a base is fixed to the bottom of the pump body, and a fixing bolt hole is formed in the base.

4. The large flux dual diaphragm hand pump of claim 1, wherein said pump body, end cap and diaphragm are mated in parallel, said diaphragm having a profile that is identical to the profile of the inner sidewall of said end cap and the profile of the two sidewalls of said pump body.

5. The large-flux double-diaphragm manual pump according to claim 1, wherein the pressing mechanism comprises a pump body positioning lug fixed on the outer side of the pump body, an end cover positioning lug fixed on the end cover, a threaded connecting rod penetrating through the pump body positioning lug and the end cover positioning lug and fastened by locking nuts at two ends.

6. The large flux dual diaphragm hand pump of claim 1, wherein each of said drive chamber, feed chamber and discharge chamber has side wall recesses on opposite side walls thereof, three of said side wall recesses being adapted to cooperate with and seal against three diaphragm protrusions formed on respective sides of the diaphragm.

7. A large capacity double diaphragm hand pump according to claim 1, wherein each of said end caps is of a male housing construction, and wherein each of said cavity, feed passageway and discharge passageway has an end cap female ring formed on a side wall surface thereof, three of said end cap female rings being adapted to seal with three diaphragm male rings formed on respective sides of said diaphragm.

8. The large-flux double-diaphragm manual pump according to claim 1, wherein the rocker driving mechanism comprises a rocker structure, a coupling member and a support chuck I, wherein one end of the rocker structure is located in the driving cavity, the other end of the rocker structure penetrates out of the pump body, the coupling member is driven by the rocker structure to axially reciprocate, and the support chuck I is respectively fixed at two ends of the coupling member to drive the corresponding diaphragm to deform.

9. The large-flux double-diaphragm manual pump according to claim 1, wherein the rocker driving mechanism comprises a rocker structure, a coupling member, a support chuck I and a support chuck II, wherein one end of the rocker structure is located in the driving cavity, and the other end of the rocker structure penetrates through the pump body, the coupling member is driven by the rocker structure to reciprocate in the axial direction, the support chuck I is respectively fixed at two ends of the coupling member to drive the corresponding diaphragm to deform in the forward direction, and the support chuck II is fixed on the corresponding end cover through an elastic support connecting rod to drive the corresponding diaphragm to deform in the reverse direction, wherein the support connecting rod, the support chuck I and the support chuck II are coaxially assembled.

10. The large flux dual diaphragm hand pump according to claim 9, wherein each of said end caps has a cavity centrally formed with a locating hole for securing one end of said support link, the other end of said support link being secured to the end of said coupling member through a central hole formed in said support chuck I, said diaphragm and said support chuck II in sequence.

11. The large-flux double-diaphragm manual pump according to claim 10, wherein the support chuck I and the support chuck II are disc-shaped structures having the same shape and size, each of which includes a chuck a surface and a chuck B surface, wherein each chuck a surface faces the diaphragm, the chuck B surface of the support chuck I is formed with a cavity into which the end of the coupling is inserted, and the chuck B surface of the support chuck II is formed with a cavity into which the end of the support link is inserted.

12. The large flux dual diaphragm hand pump of claim 11, wherein said chuck face a is generally planar and has a peripheral annular curved configuration and said chuck face B is radially hub configured.

13. The large flux dual diaphragm manual pump of claim 1, wherein each of said diaphragms is formed with a unidirectional annular projection for positive and negative deformation.

14. The large flux dual diaphragm hand pump according to claim 11, wherein each of said diaphragm has a diaphragm a face and a diaphragm B face, wherein a one-way annular protrusion is formed on said diaphragm a face, said diaphragm B face faces a side of said pump body, said diaphragm a face is concentrically engaged with said support chuck II, and said diaphragm B face is concentrically engaged with said support chuck I.

15. The large-flux double-diaphragm manual pump according to claim 8, wherein the rocker structure comprises a driving member and a manual rocker fixed on a top of the driving member, the driving member is rotatably connected with the pump body through a rotating mechanism, a bottom of the driving member is a driving end, the driving end is located in the driving cavity and fixedly connected with the coupling member, and a top of the driving member penetrates through a top opening formed on the pump body.

16. The large flux dual diaphragm manual pump of claim 15, wherein said rotating mechanism comprises two positioning members symmetrically fixed to both sides of said top opening and a positioning bolt passing through said positioning members and said driving member and having both ends fixed by nuts.

17. The large flux dual diaphragm manual pump of claim 8, wherein said drive end is saddle-shaped, said coupling member being located within a central void of said saddle-shaped structure, said coupling member being secured at a central portion thereof to said saddle-shaped structure by bolts and nuts.

18. The large flux dual diaphragm hand pump of claim 17, wherein said saddle structure is formed with two coaxial through holes, said coupling member is formed with a coupling through hole at its center in a radial direction, and a fixing bolt is passed through said through holes and said coupling through hole to engage a nut to fix said saddle structure and said coupling member together.

19. The large flux dual diaphragm manual pump of claim 15, wherein said manual rocker is an elongated rod having a top with a grab handle shape and a bottom that fits into a slot formed in a top of said drive member.