Vertical diaphragm pump with large flow and high lift

Abstract

The application discloses a vertical diaphragm pump with large flow and high lift, belongs to the technical field of diaphragm pumps, and solves the problem of poor suction and insufficient suction stroke of the diaphragm pump when sucking liquid because the diaphragms on both sides do not work together. The diaphragm pump comprises a cylinder body with an air inlet and an air outlet, a diaphragm chamber I in communication with both ends of the cylinder body, a diaphragm I fixed in the diaphragm chamber I and capable of deforming, a connecting rod movably connected in the cylinder body, one end of the connecting rod being fixedly connected with the diaphragm I to control the deformation of the diaphragm I, a diaphragm chamber II symmetrically arranged and in communication with the diaphragm chamber I on the same side, a diaphragm II fixed in the diaphragm chamber II and capable of deforming, and an air pipe, and the side of the diaphragm chamber II away from the diaphragm chamber I is closed. The diaphragm pump can enhance the suction of liquid by the diaphragm I and the diaphragm II working together, and then can continuously apply suction to the liquid to reach a higher height under the condition of enhanced suction, so that the suction stroke is enhanced.

Description

Technical Field

[0001] This invention relates to the field of diaphragm pump technology, and more particularly to vertical diaphragm pumps with high flow rates and high head. Background Technology

[0002] A pneumatic diaphragm pump is a liquid transfer device that uses air pressure as its power source. It employs a special design and operating principle, offering numerous advantages and a wide range of applications.

[0003] One of the advantages of pneumatic diaphragm pumps is their ability to handle high-viscosity, corrosive, and particulate liquids. Because the liquid is isolated from the air pressure, leaks and contamination are prevented. Furthermore, pneumatic diaphragm pumps are self-priming, allowing them to operate normally even without a liquid supply. They can also operate in dry-running conditions, improving equipment reliability and safety.

[0004] Diaphragm pumps draw fluids sequentially from their left and right diaphragms. However, because the diaphragms do not work simultaneously, the suction force is relatively weak, resulting in insufficient suction range, making them unsuitable for high-suction-range applications.

[0005] Therefore, a vertical diaphragm pump with large flow rate and high head is proposed to solve or alleviate the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vertical diaphragm pump with high flow rate and high head.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A vertical, high-flow-rate, high-lift diaphragm pump includes a cylinder with an inlet and an outlet, a diaphragm chamber 1 connected to both ends of the cylinder, a deformable diaphragm 1 fixed within the diaphragm chamber 1, and a connecting rod movably connected to the cylinder. One end of the connecting rod is fixedly connected to the diaphragm 1 to control its deformation. The pump also includes a diaphragm chamber 2 symmetrically arranged and connected to the diaphragm chamber 1 on the same side, a deformable diaphragm 2 fixed within the diaphragm chamber 2, and an air pipe. The side of the diaphragm chamber 2 away from the diaphragm chamber 1 is closed, and both ends of the air pipe are connected to the diaphragm chamber 1 on one side and the diaphragm chamber 2 on the other side, respectively. When the diaphragm 1 and the diaphragm 2 abut, their surfaces are in contact.

[0009] Preferably, it also includes an upper vertical pipe, a lower vertical pipe, an inlet pipe, and an outlet pipe. The upper vertical pipe is connected above the connection between diaphragm chamber one and diaphragm chamber two, and the lower vertical pipe is connected below the connection between diaphragm chamber one and diaphragm chamber two. Both upper vertical pipes are connected to the outlet pipe, and both lower vertical pipes are connected to the inlet pipe.

[0010] Preferably, the inlet pipe is fixedly connected to several supporting bases.

[0011] Preferably, the side of the second diaphragm chamber away from the first diaphragm chamber is sealed by a sealing plate and several bolts and nuts. A telescopic rod is fixedly connected to the sealing plate. The end of the telescopic rod away from the sealing plate is fixedly connected to the second diaphragm. A spring is sleeved on the outside of the telescopic rod. The two ends of the spring are fixedly connected to the sealing plate and the second diaphragm, respectively.

[0012] Preferably, a one-way component is provided inside the lower vertical tube. When the first and second diaphragms are in contact, the one-way component closes the gap between the first and second diaphragms and the one-way component, thus blocking the lower vertical tube.

[0013] Preferably, the unidirectional component includes a limiting ring fixedly connected to the inner peripheral wall of the lower vertical tube, a limiting ball filling the gap between the limiting ring and diaphragm one and diaphragm two, and a connecting line connecting the limiting ball and the limiting ring. The limiting ball includes a hemispherical part and an irregularly shaped part integrally formed therewith. When the irregularly shaped part contacts the lower edge of diaphragm one and diaphragm two and the peripheral wall of the lower vertical tube, the limiting ring and the hemispherical part can be fitted together.

[0014] Preferably, both the first and second diaphragms are provided with a settling groove and a through groove communicating with the settling groove. The end of the connecting rod facing the first diaphragm is provided with a threaded hole, and the connecting rod passes through the through groove of the first diaphragm. A bolt is provided in the settling groove of the first diaphragm and threadedly connected to the threaded hole. The end of the telescopic rod away from the sealing plate is provided with a threaded hole, and the telescopic rod passes through the through groove of the second diaphragm. A bolt is provided in the settling groove of the second diaphragm and threadedly connected to the threaded hole.

[0015] Preferably, a one-way valve is provided inside the upper vertical pipe.

[0016] The present invention has the following beneficial effects:

[0017] The diaphragm pump of this invention enhances the suction force during liquid extraction by simultaneously operating diaphragm one and diaphragm two on one side. This allows the diaphragm pump to continuously apply suction, thereby increasing the liquid extraction height and enhancing its suction range. Simultaneously, diaphragm one and diaphragm two make surface contact and, in conjunction with a one-way assembly, create a near-vacuum state between the upper and lower vertical pipes, minimizing pressure. Thus, when diaphragm one and diaphragm two move away from each other, the volume between them increases, and the pressure reaches a minimum. Under atmospheric pressure, external liquid can quickly and powerfully enter the diaphragm pump, further enhancing the overall suction range of the diaphragm pump.

[0018] The suction power of the diaphragm pump is enhanced due to the synchronized operation of diaphragm one and diaphragm two. By operating two diaphragms simultaneously, the liquid-drawing capacity is increased. The combined action of diaphragm one and diaphragm two allows liquid to be continuously drawn in and transported upwards, thus overcoming the suction head limitation of a single diaphragm pump.

[0019] The surface contact between diaphragm one and diaphragm two, as well as the cooperation of the unidirectional components, play a crucial role. The surface contact ensures good sealing and prevents leakage. The presence of the unidirectional components ensures that the liquid can only flow in a specific direction, preventing backflow and liquid reverse flow, while simultaneously creating a near-vacuum state between the upper and lower risers, minimizing pressure.

[0020] When diaphragm one and diaphragm two are far apart, the volume between them increases while the pressure is extremely low. Under this condition, under atmospheric pressure, external liquid can quickly and forcefully enter the diaphragm pump, making the liquid intake faster and smoother, thereby further enhancing the suction head capacity of the diaphragm pump.

[0021] In summary, the diaphragm pump of this invention achieves enhanced suction during liquid pumping through the synchronous operation of the diaphragm on one side, the formation of surface contact, and the cooperation of unidirectional components. This design allows the diaphragm pump to continuously apply suction, increasing the liquid suction head, and by increasing volume and reducing pressure, it allows external liquid to enter the diaphragm pump quickly and powerfully, further enhancing the suction head capacity. This innovative design and working principle enable the diaphragm pump of this invention to play a greater role in various industrial applications. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a partial cross-sectional view of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0025] 1. Cylinder block; 11. Inlet; 12. Outlet; 2. Inlet pipe; 21. Base; 3. Outlet pipe; 4. Diaphragm chamber one; 41. Lower vertical pipe; 411. Limiting ring; 412. Limiting ball; 413. Connecting wire; 42. Upper vertical pipe; 51. Diaphragm chamber two; 52. Sealing plate; 53. Air pipe; 6. Diaphragm one; 61. Bolt one; 62. Connecting rod; 7. Diaphragm two; 71. Bolt two; 72. Telescopic rod; 73. Spring. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Vertical diaphragm pumps with high flow rates and high head, such as... Figure 1-3 As shown, the system includes a cylinder 1 with an air inlet 11 and an air outlet 12, a diaphragm chamber 4 communicating with both ends of the cylinder 1, a deformable diaphragm 6 fixed in the diaphragm chamber 4, a connecting rod 62 movably connected to the cylinder 1, one end of the connecting rod 62 being fixedly connected to the diaphragm 6 to control its deformation, a second diaphragm chamber 51 symmetrically arranged and communicating with the diaphragm chamber 4 on the same side, a deformable diaphragm 7 fixed in the second diaphragm chamber 51, and an air pipe 53. The side of the second diaphragm chamber 51 away from the first diaphragm chamber 4 is closed. Specifically, the side of the second diaphragm chamber 51 away from the first diaphragm chamber 4 is closed by a sealing plate 52 and several bolts and nuts. The sealing plate 52 is circular and has several through holes 1 on its outer ring. The outer ring of the second diaphragm chamber 51 also has several through holes 2 corresponding to the through holes 1. The bolts pass through the through holes 1 and through holes 2 and are connected to the nuts. The threaded connection allows the sealing plate 52 to press against the second diaphragm chamber 51, thus sealing it. A telescopic rod 72 is fixedly connected to the sealing plate 52. The end of the telescopic rod 72 away from the sealing plate 52 is fixedly connected to the second diaphragm 7. A spring 73 is sleeved on the outside of the telescopic rod 72. The two ends of the spring 73 are fixedly connected to the sealing plate 52 and the second diaphragm 7, respectively. Both the first diaphragm 6 and the second diaphragm 7 have recesses and through grooves communicating with the recesses. The connecting rod 62 has a threaded hole 1 at the end facing the first diaphragm 6 and passes through the through groove of the first diaphragm 6. A bolt 61 threadedly connected to the first threaded hole is provided in the recess of the first diaphragm 6. A threaded hole 2 is provided at the end of the telescopic rod 72 away from the sealing plate 52 and passes through the through groove of the second diaphragm 7. A bolt 71 threadedly connected to the second threaded hole 2 is provided in the recess of the second diaphragm 7.

[0028] Furthermore, the two ends of the trachea 53 are respectively connected to the diaphragm chamber 4 on one side and the diaphragm chamber 51 on the other side, and the surfaces of the diaphragm 6 and the diaphragm 7 are in contact when they come into contact.

[0029] It also includes an upper vertical pipe 42, a lower vertical pipe 41, an inlet pipe 2, and an outlet pipe 3. The upper vertical pipe 42 is connected above the connection between diaphragm chamber 1 4 and diaphragm chamber 2 51. A one-way valve is installed inside the upper vertical pipe 42. The lower vertical pipe 41 is connected below the connection between diaphragm chamber 1 4 and diaphragm chamber 2 51. A one-way component is installed inside the lower vertical pipe 41. When it contacts the surfaces of diaphragm 1 6 and diaphragm 2 7, the one-way component closes the gap between diaphragm 1 6, diaphragm 2 7 and the one-way component and blocks the lower vertical pipe 41. Both upper vertical pipes 42 are connected to the outlet pipe 3. Both lower vertical pipes 41 are connected to the inlet pipe 2. Several supporting bases 21 are fixedly connected to the inlet pipe 2.

[0030] The unidirectional component includes a limiting ring 411 fixedly connected to the inner peripheral wall of the lower vertical tube 41, a limiting ball 412 filling the gap between the limiting ring 411 and the first diaphragm 6 and the second diaphragm 7, and a connecting line 413 connecting the limiting ball 412 and the limiting ring 411. The limiting ball 412 includes a hemispherical part and an irregularly shaped part integrally formed therewith. When the irregularly shaped part is in contact with the lower edge of the first diaphragm 6 and the second diaphragm 7 and the peripheral wall of the lower vertical tube 41, the limiting ring 411 and the hemispherical part can be fitted together.

[0031] During the use of this diaphragm pump, the base 21 and inlet pipe 2 enable the entire diaphragm pump to be placed stably on the ground, preventing it from tipping over due to the increased center of gravity. At the same time, the two lower vertical pipes 41 are connected to the same inlet pipe 2. It can be seen that the flow channel cross-sectional area of ​​the two lower vertical pipes 41 is significantly larger than that of the inlet pipe 2, thereby enabling a greater suction force to be applied to the liquid in the inlet pipe 2 during the pumping process.

[0032] When the diaphragm pump needs to operate, the air pump inputs gas into the cylinder 1 through the air inlet 11. The gas, according to the existing technology of diaphragm pumps, pushes the connecting rod 62 on one side of the cylinder 1. This causes the connecting rod 62, driven by the bolt 61, to deform the diaphragm 6, causing it to bulge outwards and reducing the distance between it and the second diaphragm 7. When the diaphragm 6 on that side attempts to release gas, gas enters between the sealing plate 52 and the second diaphragm 7 through the air pipe 53. The expansion of the gas causes the second diaphragm 7 on the other side to inflate, and simultaneously, the diaphragm 6 on the other side also inflates. When diaphragm 7 is inflated, it causes the telescopic rod 72 to deform via bolt 71, causing the telescopic rod 72 to extend. Simultaneously, it stretches the spring 73, causing it to elastically deform. After diaphragms 6 and 7 are inflated, they come into contact with each other, achieving surface contact and forcing the liquid between them into the one-way valve, thus entering the upper vertical pipe 42. This also compresses the limiting ball 412, pushing it downwards under the action of the inclined surface of the irregular part. This causes the irregular part to move the hemispherical part downwards until the hemispherical part contacts the inner circumferential wall of the limiting ring 411. At this point, diaphragm 6 and diaphragm 7... The liquid between diaphragms 6 and 7 primarily enters the upper vertical pipe 42 through the one-way valve, maintaining minimal pressure between them. Simultaneously, the pull of spring 73 and connecting rod 62 causes diaphragms 6 and 7 to move further apart, increasing the usable volume between them. However, the pressure remains low. Furthermore, the limiting ball 412 loses its resistance to the limiting ring 411. Under atmospheric pressure, external liquid enters the lower vertical pipe 41 through inlet pipe 2. Simultaneously, the liquid inside the lower vertical pipe 41 is forced in by atmospheric pressure. The liquid rises against the limiting ball 412, preventing it from obstructing the flow path of the lower vertical pipe 41. Due to the tension of the connecting line 413, the limiting ball 412 will not detach or deflect. After the liquid under atmospheric pressure breaks through the one-way component and enters between diaphragm 6 and diaphragm 7, it still has a large mechanical potential energy, enabling it to pass through the one-way valve and enter the upper vertical pipe 42. When the distance between diaphragm 6 and diaphragm 7 decreases again, all the liquid between them will be squeezed, pass through the one-way valve, and enter the upper vertical pipe 42, eventually leaving through the upper vertical pipe 42 and the outlet pipe 3.

[0033] This diaphragm pump, operating in conjunction with atmospheric pressure, can draw liquids while maintaining a high mechanical potential energy in the liquid entering the pump. This design allows it to achieve a greater suction lift compared to conventional diaphragm pumps, thus adapting to various high-suction-lift environments and preventing suction failures.

[0034] This diaphragm pump is meticulously designed and optimized to work in conjunction with atmospheric pressure. The near-vacuum environment created inside the pump interacts with atmospheric pressure to complete the liquid suction process. This unique design ensures that the diaphragm pump can overcome gravity and the resistance of the liquid itself, drawing liquid from a lower to a higher position, thus achieving a large suction lift.

[0035] Simultaneously, the liquid maintains a significant mechanical potential energy upon entering the diaphragm pump. Mechanical potential energy refers to the kinetic and pressure energy carried by the liquid. Through the pump's design and operating principle, the liquid acquires high velocity and pressure upon entering the pump, thus possessing a large energy reserve during the pumping process. This maintenance of mechanical potential energy enables the diaphragm pump to smoothly lift the liquid to a higher position.

[0036] Therefore, by utilizing atmospheric pressure and maintaining mechanical potential energy, this diaphragm pump achieves a large suction lift capacity. It can adapt to various high-suction-lift operating environments, and can perfectly complete the task no matter how high the liquid needs to be pumped. Compared to ordinary diaphragm pumps, it avoids the problem of insufficient suction lift, providing a more flexible and efficient liquid transfer solution.

[0037] In summary, this diaphragm pump achieves a large suction lift capacity by coordinating with atmospheric pressure and maintaining the mechanical potential energy of the liquid. It can adapt to various high-suction-lift operating environments, avoiding the problem of being unable to pump. This innovative design and working principle make this diaphragm pump a higher-performance, more reliable liquid transfer device with a large flow rate for transportation.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A vertical diaphragm pump with high flow rate and high head, characterized in that, The system includes a cylinder (1) with an air inlet (11) and an air outlet (12), a diaphragm chamber 1 (4) connected to both ends of the cylinder (1), a deformable diaphragm 1 (6) fixed in the diaphragm chamber 1 (4), and a connecting rod (62) movably connected in the cylinder (1). One end of the connecting rod (62) is fixedly connected to the diaphragm 1 (6) to control its deformation. The system also includes a diaphragm chamber 2 (51) symmetrically arranged and connected to the diaphragm chamber 1 (4) on the same side, a deformable diaphragm 2 (7) fixed in the diaphragm chamber 2 (51), and an air pipe (53). The side of the diaphragm chamber 2 (51) away from the diaphragm chamber 1 (4) is closed, and the two ends of the air pipe (53) are respectively connected to the diaphragm chamber 1 (4) on one side and the diaphragm chamber 2 (51) on the other side. When the diaphragm 1 (6) and the diaphragm 2 (7) abut, their surfaces are in contact.

2. The vertical high-flow-rate, high-head diaphragm pump according to claim 1, characterized in that, It also includes an upper vertical pipe (42), a lower vertical pipe (41), an inlet pipe (2), and an outlet pipe (3). The upper vertical pipe (42) is connected above the connection between diaphragm chamber one (4) and diaphragm chamber two (51). The lower vertical pipe (41) is connected below the connection between diaphragm chamber one (4) and diaphragm chamber two (51). Both upper vertical pipes (42) are connected to the outlet pipe (3), and both lower vertical pipes (41) are connected to the inlet pipe (2).

3. The vertical high-flow-rate, high-head diaphragm pump according to claim 2, characterized in that, The inlet pipe (2) is fixedly connected to several supporting bases (21).

4. The vertical high-flow-rate, high-head diaphragm pump according to claim 1, characterized in that, The side of the second diaphragm chamber (51) away from the first diaphragm chamber (4) is sealed by a sealing plate (52) and several bolts and nuts. A telescopic rod (72) is fixedly connected to the sealing plate (52). The end of the telescopic rod (72) away from the sealing plate (52) is fixedly connected to the second diaphragm (7). A spring (73) is sleeved on the outside of the telescopic rod (72). The two ends of the spring (73) are fixedly connected to the sealing plate (52) and the second diaphragm (7) respectively.

5. The vertical high-flow-rate, high-head diaphragm pump according to claim 2, characterized in that, The lower vertical tube (41) is provided with a one-way component. When it comes into contact with the first diaphragm (6) and the second diaphragm (7), the one-way component closes the gap between the first diaphragm (6), the second diaphragm (7) and the one-way component and blocks the lower vertical tube (41).

6. The vertical high-flow-rate, high-head diaphragm pump according to claim 5, characterized in that, The unidirectional component includes a limiting ring (411) fixedly connected to the inner peripheral wall of the lower vertical tube (41), a limiting ball (412) filling the gap between the limiting ring (411) and diaphragm one (6) and diaphragm two (7), and a connecting line (413) connecting the limiting ball (412) and the limiting ring (411). The limiting ball (412) includes a hemispherical part and an irregularly shaped part integrally formed therewith. When the irregularly shaped part is in contact with the lower edge of diaphragm one (6) and diaphragm two (7) and the peripheral wall of the lower vertical tube (41), the limiting ring (411) is fitted with the hemispherical part.

7. The vertical high-flow-rate, high-head diaphragm pump according to claim 4, characterized in that, Both the first diaphragm (6) and the second diaphragm (7) are provided with a recessed groove and a through groove communicating with the recessed groove. The connecting rod (62) has a threaded hole at one end facing the first diaphragm (6) and the connecting rod (62) passes through the through groove of the first diaphragm (6). The recessed groove of the first diaphragm (6) is provided with a bolt (61) threadedly connected to the threaded hole. The telescopic rod (72) has a threaded hole at one end away from the sealing plate (52) and the telescopic rod (72) passes through the through groove of the second diaphragm (7). The recessed groove of the second diaphragm (7) is provided with a bolt (71) threadedly connected to the threaded hole.

8. The vertical high-flow-rate, high-head diaphragm pump according to claim 2, characterized in that, A one-way valve is installed inside the upper vertical pipe (42).

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