CN220599974U - Novel diaphragm pump utilizing drainage principle - Google Patents

Abstract

The utility model relates to the field of pumps, in particular to a novel diaphragm pump utilizing a drainage principle, wherein a transmission shaft is arranged in a pump body, propeller valve plates are arranged at the end parts of two sides of the transmission shaft, a sealing disc is arranged on the inner side of the transmission shaft, drainage shells, pumping shells and end covers are sequentially arranged at two ends of the pump body from inside to outside, the end covers are connected with the pump body through connecting pieces, valve plates are arranged between the drainage shells and the pump body and between the pumping shells and the end covers, propeller seals are arranged between the pumping shells and the drainage shells, a suction valve seat is arranged on the inner side of the pump body, and the valve plates and the suction valve seat are arranged on the outer side of the suction valve seat; the novel principle, namely the drainage principle, is adopted, the inertia force of the fluid in the discharge pipeline is fully utilized, the fluid efficiency is greatly improved, and meanwhile, the drainage diaphragm pump overcomes a plurality of defects of the common diaphragm pump.

Description

Novel diaphragm pump utilizing drainage principle

Technical Field

The utility model relates to a novel diaphragm pump utilizing a drainage principle, and belongs to the field of diaphragm pumps.

Background

A diaphragm pump is a positive displacement pump for delivering fluid, and it mainly changes the volume in a chamber by up-and-down reciprocation of a diaphragm to perform the functions of sucking and discharging fluid. As a specific example of the diaphragm pump, the diaphragm pump may be an electric diaphragm pump that drives a diaphragm by a motor; the traditional diaphragm pump thoroughly separates the moving parts such as the piston, the piston rod, the cylinder sleeve and the like from the fluid to be conveyed through the diaphragm, and the structural design avoids the moving parts from being damaged due to the grinding of solid particles, so that the service lives of the moving parts are greatly prolonged.

Disclosure of Invention

The utility model aims to solve the technical problems that: the traditional diaphragm pump has smaller relative flow, can not achieve the aim of quickly recycling spilled oil, and can meet the requirement of spilled oil recycling treatment capacity; firstly, the volume of the floating type oil spill device can be increased, but a large diaphragm pump is heavy and requires large-scale transportation and lifting equipment, and is not suitable for being installed on the floating type oil spill device; and secondly, the reciprocating times are increased, so that the volume of the diaphragm pump can be reduced, but when the reciprocating times are increased to a certain value, the diaphragm pump and the valve have higher requirements, otherwise, the diaphragm pump cannot work normally, and therefore, the reciprocating times cannot be increased without limitation.

The utility model relates to a novel diaphragm pump utilizing a drainage principle, which comprises a pump body, a pump body inner cavity, a transmission shaft, a drainage structure, a pumping structure, a buffer tank assembly, an end cover and a converging manifold.

The drainage structure comprises a propeller seal, a propeller valve plate, a drainage shell, a suction valve seat, a valve plate and a sealing disc; the propeller and the propeller valve plate are fixed at the end part of the transmission shaft, the sealing disc is fixed on the transmission shaft through a transmission groove, the outer diameter of the sealing disc is in sealing connection with the pump body, the propeller seal is fixed at the outer edge of the propeller through a propulsion groove, the propeller seal and the drainage shell form a seal, and the propeller seal and the drainage shell are arranged at two sides of the pump body; the suction valve seat is provided with a drainage through hole in a penetrating way.

The suction valve seat is arranged in the pump body, the valve plate is arranged on the outer side of the suction valve seat, and the valve plate is fixed with the drainage shell through the suction valve seat.

The propeller is provided with a propelling through hole in a penetrating way.

The pumping structure comprises a propeller seal, a propeller valve plate, a pumping shell and a valve plate, wherein the outer edge of the propeller seal is fixed with the drainage shell through the pumping shell, the valve plate is attached to the outer surface of the pumping shell, and the outer side of the valve plate is fixed with the pumping shell through an end cover.

The valve block outside sets up first arch.

The outer side of the propeller valve plate is provided with a second bulge.

The pumping shell is provided with a pumping through hole.

The buffer tank assembly comprises a buffer tank seat, a buffer tank shell, a rubber column, a screw rod, a connecting stud, a buffer tank sealing disc and a sealing disc shaft, wherein the buffer tank sealing disc is fixed on the outer side of the sealing disc shaft through a buffer tank sealing groove, the rubber column is fixed on the buffer tank shell through the screw rod, the middle part of the buffer tank seat penetrates through the connecting stud to be fixed on a pump body, and a buffer through hole is formed in the bottom of the buffer tank seat.

The junction of the end cover of the manifold is provided with a clamp, and the clamp manifold is fixed on the end cover through the clamp.

Compared with the prior art, the utility model has the beneficial effects that:

because the drainage diaphragm pump adopts a novel drainage principle, the inertia force of fluid in the discharge pipeline is fully utilized, the fluid efficiency is greatly improved, the drainage diaphragm pump can not only discharge liquid in the upward stroke of the piston, but also discharge liquid in the downward stroke, so that the actual discharge flow is greatly improved; the processing capacity is large, the volume efficiency is high, the stroke is short, and the moving part is driven by the cam mechanism; the structure of the pump is simplified, the weight of the pump is reduced, continuous idle running can be realized, the running efficiency is high, overload cannot be burnt, the service life is long, the transmission mode is only mechanical transmission and the rotating speed is high, a speed reducing mechanism is omitted, a valve is made of rubber and can work at high rotating speed, and the best effect can be exerted at lower lift, so that the drainage diaphragm pump is also suitable for high-flow occasions; the valve plate and the sealing element in the drainage diaphragm pump are mainly made of rubber materials with special compounds, and thick protruding parts are arranged, so that the fatigue strength is improved, and the operation efficiency is improved; for the reciprocating pump (drainage pump) applying the drainage principle, the valve of the propeller is closed in the down stroke stage of the piston, but the fluid in the discharge pipeline is still continuously conveyed, particularly, the buffer tank is added, so that the fluid can be stored when the propulsion energy is high, and the fluid is released when the propulsion energy is low, so that the fluid flow in the discharge pipeline is more stable.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a full cross-sectional view of an embodiment of the present utility model;

FIG. 3 is a left side view of an embodiment of the present utility model;

FIG. 4 is a schematic illustration of the suction valve seat structure of the present utility model;

FIG. 5 is a schematic view of a valve plate according to the present utility model;

FIG. 6 is a schematic view of the propeller structure of the present utility model;

FIG. 7 is a schematic view of the drive shaft configuration of the present utility model;

FIG. 8 is a cross-sectional view of the valve plate structure of the propeller of the present utility model;

FIG. 9 is a schematic diagram of the pumping housing structure of the present utility model;

FIG. 10 is a schematic view of the surge tank assembly of the present utility model;

FIG. 11 is a schematic view of the seal disk shaft of the present utility model;

FIG. 12 is a graph of transient flow characteristics of a drainage diaphragm pump of the present utility model;

in the figure: 1. a pump body; 2. a pump body cavity; 3. a transmission shaft; 4. a drainage structure; 5. a pumping structure; 6. a surge tank assembly; 7. an end cap; 8. a manifold; 9. a drainage cavity; 10. a pumping chamber; 11. a clamp;

3.1, a transmission groove;

4.1, sealing the propeller; 4.2, a propeller; 4.3, a propeller valve plate; 4.4, drainage shell; 4.5, sucking the valve seat; 4.6, valve plate; 4.7, sealing disc;

4.2.1, pushing through holes; 4.2.2, pushing grooves;

4.3.1, second protrusions;

4.5.1, drainage through holes;

4.6.1, first protrusions;

5.1, pumping housing;

5.1.1, pumping through holes;

6.1, a buffer tank seat; 6.2, buffering the shell; 6.3, rubber columns; 6.4, a screw rod; 6.5, connecting the studs; 6.7, a buffer tank sealing disc;

6.1.1, buffer through holes;

6.7.1, buffer tank sealing groove.

Detailed Description

Example 1

As shown in fig. 1 to 12, the novel diaphragm pump utilizing the drainage principle is characterized by comprising a pump body 1, a pump body inner cavity 2, a transmission shaft 3, a drainage structure 4, a pumping structure 5, a buffer tank assembly 6, an end cover 7 and a confluence manifold 8, wherein the pump body inner cavity 2 is arranged in the pump body 1, the transmission shaft 3 is arranged in the pump body inner cavity 2, the drainage structure 4 and the pumping structure 5 are arranged around the transmission shaft 3, the middle part of the pumping cavity 10 is divided into a drainage cavity 9 and a pumping cavity 10 by the drainage structure 4 and the pumping structure 5, the end covers 7 are arranged at two ends of the pump body 1, and the confluence manifold 8 and the buffer tank assembly 6 are arranged through the end covers 7 to be communicated with the pump body inner cavity 2. Through the arrangement of the inner cavity of the pump body 1, the drainage cavity 9 and the pumping cavity 10, the functions of storing, draining and pumping liquid can be achieved, in the liquid pumping process, the buffer tank assembly 6 is used for storing and releasing liquid, the effect of buffering the flow speed of the liquid is achieved, and the confluence manifold 8 penetrates through the end cover 7 and is discharged through a discharge pipeline of the pumping cavity 10 after confluence; thereby the diaphragm pump has the functions of drainage, pumping and buffering.

The drainage structure 4 comprises a propeller seal 4.1, a propeller 4.2, a propeller valve plate 4.3, a drainage shell 4.4, a suction valve seat 4.5, a valve plate 4.6 and a sealing disc 4.7; the propeller 4.2 and the propeller valve plate 4.3 are fixed at the end part of the transmission shaft 3, the sealing disc 4.7 is fixed on the transmission shaft 3 through the transmission groove 3.1, the outer diameter of the sealing disc 4.7 is in sealing connection with the pump body 1, the propeller seal 4.1 is fixed at the outer edge of the propeller 4.2 through the propulsion groove 4.2.2, the propeller seal 4.1 and the drainage shell 4.4 form a seal, and the propeller seal is arranged at two sides of the pump body 1; the suction valve seat 4.5 is provided with a drainage through hole 4.5.1 in a penetrating way. The propeller 4.2 seals 4.1, the propeller 4.2 valve plate 4.6 and the valve plate 4.6 jointly play a role in sealing, the drainage cavity 9 is communicated with the pumping cavity through the drainage through hole 4.5.1, and liquid enters the end cover 7 after being pumped through the propeller 4.2 and the propeller 4.2 valve plate 4.6 arranged at the end part of the transmission shaft 3.

The suction valve seat 4.5 is arranged in the pump body 1, the valve plate 4.6 is arranged outside the suction valve seat 4.5, and the valve plate 4.6 is fixed through the suction valve seat 4.5 and the drainage shell 4.4. Through setting up suction valve seat 4.5 and valve block 4.6, can make the pump open valve block 4.6 in the motion process, make pump body 1 inner chamber and suction cavity intercommunication.

The propeller 4.2 is provided with a propeller through hole 4.2.1. By arranging the pushing through hole 4.2.1, the drainage cavity 9 is communicated with the pumping cavity 10, and liquid enters the pumping cavity 10 from the drainage cavity 9 after passing through the pushing through hole 4.2.1.

The pumping structure 5 comprises a propeller seal 4.1, a propeller 4.2, a propeller valve plate 4.3, a pumping shell 5.1 and a valve plate 4.6, wherein the outer edge of the propeller seal 4.1 is fixed with the drainage shell 4.4 through the pumping shell 5.1, the valve plate 4.6 is attached to the outer surface of the pumping shell 5.1, and the outer side of the valve plate 4.6 is fixed with the pumping shell 5.1 through an end cover 7. Through setting up the seal structure that impeller 4.2 valve block 4.6, impeller 4.2 seal 4.1 and valve block 4.6 formed, through the reciprocating motion of impeller 4.2 and impeller 4.2 valve block 4.6, liquid gets into end cover 7 through pumping cavity 10, wholly accomplishes the pumping motion.

The outer side of the valve plate 4.6 is provided with a first bulge 4.6.1.

The outer side of the propeller valve plate 4.3 is provided with a second bulge 4.3.1.

By arranging the first protrusions 4.6.1 and the second protrusions 4.3.1 on the valve plates 4.6 and the valve plates 4.6 of the propeller 4.2, the fatigue strength and the fatigue life of the valve plates 4.6 and the valve plates 4.6 of the propeller 4.2 in the operation process of the pump can be improved.

The pumping shell 5.1 is provided with a pumping through hole 5.1.1. The pumping cavity 10 and the cavity of the end cover 7 can be communicated through the pumping through hole 5.1.1 formed in the pumping shell 5.1, and liquid enters the end cover 7 from the pumping cavity 10 through the pumping through hole 5.1.1 in the pumping process.

The buffer tank assembly 6 comprises a buffer tank seat 6.1, a buffer tank shell 6.2, a rubber column 6.3, a screw rod 6.4, a connecting stud 6.5, a buffer tank sealing disc 6.7 and a sealing disc shaft 6.6, wherein the buffer tank sealing disc 6.7 is fixed on the outer side of the sealing disc shaft 6.6 through a buffer tank sealing groove 6.7.1, the rubber column 6.3 is fixed on the buffer tank shell 6.2 through the screw rod 6.4, the middle part of the buffer tank seat 6.1 penetrates through the connecting stud 6.5 to be fixed on the pump body 1, and a buffer through hole 6.1.1 is formed in the bottom of the buffer tank seat 6.1. Through setting up buffer tank seat 6.1 and buffer tank shell 6.2 in the buffer tank subassembly 6 and forming outside cavity structure, the connecting stud 6.5 of inside setting makes buffer tank subassembly 6 be fixed in end cover 7, and liquid is through the through-hole of buffer tank seat 6.1 of buffer tank subassembly 6, and the liquid seal disk body gets into in the buffer tank subassembly 6 through the through-hole, drives buffer tank axle compression rubber column 6.3, plays the cushioning effect, and buffer tank seal disk 6.74.7 takes sealed effect to avoid liquid entering the cavity that contains rubber column 6.3.

The junction of the manifold 8 and the end cover 7 is provided with a clamp 11, and the clamp 11 is used for fixing the manifold 8 on the end cover 7 through the clamp 11. A manifold 8 is fixedly provided by a collar 11, and liquid pumped through the end cap 7 is discharged through the manifold 8 via a pump discharge pipe.

Fig. 12 shows the speed versus time of the draining diaphragm pump in a cycle, and it can be seen that the working cycle of the draining diaphragm pump can be divided into a power-driven flow stage, i.e. a pushing stage and a draining stage, the sine curve shown by curve B represents the movement speed of the propeller 4.2, the valve plate 4.6 in the pumping chamber 10 is closed when the pump is in the next half cycle, the movement of the propeller 4.2 does not affect the discharge flow of the draining diaphragm pump, and when the propeller 4.2 moves backwards, the speed is led by the fluid inertia in the discharge pipe of the draining diaphragm pump, and the maximum speed is generated due to the displacement of the propeller 4.2 in the half stroke.

The curve a in fig. 12 represents the fluid velocity in the drainage diaphragm pump discharge line, where the fluid velocity output from the pumping chamber 10 at point a is exactly equal to the velocity in the drainage diaphragm pump discharge line, so that the valve sheet 4.6 of the pumping chamber 10 is closed, the pushing flow by the pushing device 4.2 starts, the pushing flow rate of the pushing device 4.2 exceeds the flow rate in the drainage diaphragm pump discharge line from point a to point c, a part of the fluid is stored in the buffer tank assembly 6, namely the volume indicated by the shaded area I, the velocity of the fluid discharged from the pumping chamber 10 starts to be smaller than the velocity in the drainage diaphragm pump discharge line from point c to point e, the volume of the discharged fluid is represented by the shaded area II, the shaded area I and the shaded area II are equal, at the same time, the pumping device 4.6 in the pumping chamber 10 is opened at point e, the fluid flows into the drainage diaphragm pump under the inertia in the drainage diaphragm pump discharge line, and reaches the valve sheet f again after the fluid has circulated again.

Working process or working principle:

when the propeller 4.2 moves towards the pumping cavity 10, the pumping volume is reduced, the valve plate 4.6 is pushed to be opened, liquid is pushed into the end cover 7, meanwhile, the volume of the drainage cavity 9 is increased, the pressure is reduced, the valve plate 4.6 is opened, and the liquid enters the drainage cavity 9 from the inner cavity of the pump body 1; when the propeller 4.2 moves towards the drainage direction, the volume of the pumping cavity 10 increases, the volume of the drainage cavity 9 decreases, so that pressure difference is generated at two ends, meanwhile, the propeller 4.2 drives the valve plate 4.6 of the propeller 4.2 to be opened, liquid is led to the pumping cavity 10 by the drainage cavity 9, and meanwhile, as the fluid in the confluence manifold 8 moves outwards at a certain speed, certain inertia exists, at the moment, the valve plate 4.6 on the pumping cavity 10 is not immediately closed, and the fluid in the pumping cavity 10 continues to flow outwards into the confluence manifold 8.

The description of the directions and the relative positional relationships of the structures, such as the description of the front, back, left, right, up and down, in the present utility model does not limit the present utility model, but is merely for convenience of description.

Claims (10)

1. Novel diaphragm pump utilizing drainage principle, characterized by: including pump body (1), pump body inner chamber (2), transmission shaft (3), drainage structure (4), pumping structure (5), buffer tank subassembly (6), end cover (7) and collection flow manifold (8), pump body (1) inside is equipped with pump body inner chamber (2), be equipped with transmission shaft (3) in pump body inner chamber (2), it is equipped with drainage structure (4) and pumping structure (5) to encircle transmission shaft (3), drainage structure (4) and pumping structure (5) divide pumping cavity (10) middle part into drainage cavity (9) and pumping cavity (10), pump body (1) both ends are equipped with end cover (7), end cover (7) are equipped with collection flow manifold (8) and buffer tank subassembly (6), collection flow manifold (8) intercommunication both ends end cover (7).

2. The novel diaphragm pump utilizing the drainage principle according to claim 1, wherein: the drainage structure (4) comprises a propeller seal (4.1), a propeller (4.2), a propeller valve plate (4.3), a drainage shell (4.4), a suction valve seat (4.5), a valve plate (4.6) and a sealing disc (4.7); the propeller (4.2) and the propeller valve plate (4.3) are fixed at the end part of the transmission shaft (3), the sealing disc (4.7) is fixed on the transmission shaft (3) through the transmission groove (3.1), the outer diameter of the sealing disc (4.7) is in sealing connection with the pump body (1), the propeller seal (4.1) is fixed at the outer edge of the propeller (4.2) through the propulsion groove (4.2.2), the propeller seal (4.1) and the drainage shell (4.4) form a seal, and the seal is arranged at two sides of the pump body (1); the suction valve seat (4.5) is provided with a drainage through hole (4.5.1) in a penetrating way.

3. The novel diaphragm pump utilizing the drainage principle according to claim 2, characterized in that: the suction valve seat (4.5) is arranged inside the pump body (1), the valve plate (4.6) is arranged on the outer side of the suction valve seat (4.5), and the valve plate (4.6) is fixed with the drainage shell (4.4) through the suction valve seat (4.5).

4. A novel diaphragm pump utilizing a drainage principle according to claim 3, characterized in that: the propeller (4.2) is provided with a propelling through hole (4.2.1) in a penetrating mode, the propelling through hole (4.2.1) is arranged, the drainage cavity (9) is communicated with the pumping cavity (10), and liquid enters the pumping cavity (10) from the drainage cavity (9) after passing through the propelling through hole (4.2.1).

5. The novel diaphragm pump utilizing the drainage principle according to claim 4, wherein: the pumping structure (5) comprises a propeller seal (4.1), a propeller (4.2), a propeller valve plate (4.3), a pumping shell (5.1) and a valve plate (4.6), wherein the outer edge of the propeller seal (4.1) is fixed with a drainage shell (4.4) through the pumping shell (5.1), the valve plate (4.6) is attached to the outer surface of the pumping shell (5.1), and the outer side of the valve plate (4.6) is fixed with the pumping shell (5.1) through an end cover (7).

6. The novel diaphragm pump utilizing the drainage principle according to claim 5, wherein: the outer side of the valve plate (4.6) is provided with a first bulge (4.6.1).

7. The novel diaphragm pump utilizing the drainage principle according to claim 6, wherein: the outer side of the propeller valve plate (4.3) is provided with a second bulge (4.3.1).

8. The novel diaphragm pump utilizing the drainage principle according to claim 7, wherein: the pumping shell (5.1) is provided with a pumping through hole (5.1.1).

9. The novel diaphragm pump utilizing the drainage principle according to claim 8, wherein: buffer tank subassembly (6) are including buffer tank seat (6.1), buffer tank shell (6.2), rubber column (6.3), screw rod (6.4), connecting stud (6.5), buffer tank sealing disk (6.7) and sealing disk axle (6.6), sealing disk axle (6.6) outside is through fixed buffer tank sealing disk (6.7) of buffer tank sealing groove (6.7.1), rubber column (6.3) are fixed in buffer tank shell (6.2) through screw rod (6.4), buffer tank seat (6.1) middle part run through connecting stud (6.5) are fixed in pump body (1), buffer tank seat (6.1) bottom sets up buffering through-hole (6.1.1).

10. The novel diaphragm pump utilizing the drainage principle according to claim 9, wherein: the connecting part of the converging manifold (8) and the end cover (7) is provided with a clamp (11), and the converging manifold (8) is fixed on the end cover (7) through the clamp (11).