Double-material automatic proportioning plunger pump

Abstract

The utility model relates to the technical field of pneumatic plungers, and particularly discloses a double-material automatic proportioning plunger pump which comprises a cylinder sleeve, an outer cylinder and two pump cylinders, a connecting handle is fixedly arranged above the cylinder sleeve, the outer cylinder is fixedly connected below the cylinder sleeve, and a cylinder piston is arranged in the cylinder sleeve; a cylinder connecting plate is fixedly arranged at the lower end of the outer cylinder, a second connecting rod is fixedly arranged at the center of the lower end of the cylinder connecting plate, a transmission connecting rod is arranged at the lower end of the second connecting rod, a transmission plate is fixedly arranged at the lower end of the transmission connecting rod, and two transmission shafts are fixedly arranged at the lower end of the transmission plate; the two transmission shafts are slidably arranged in a supporting plate, and the lower end of the supporting plate is fixedly connected with two pump cylinders. According to the utility model, the pressure pulse can be effectively reduced, the liquid conveying stability is ensured, the flow regulation can be realized, and the liquid conveying requirements in different occasions can be met.

Description

Technical Field

[0001] This utility model relates to the technical field of pneumatic plungers, specifically to a dual-material automatic proportioning plunger pump. Background Technology

[0002] A high-pressure pneumatic plunger pump is a device that uses compressed air as a power source and achieves high-pressure liquid transportation through the reciprocating motion of a plunger within the pump body. High-pressure pneumatic plunger pumps typically operate at high pressures and are suitable for applications requiring high-pressure liquid transportation, such as oil drilling, concrete conveying, and the transportation of high-viscosity liquids in industrial production. By adjusting the input compressed air pressure, the output pressure of the liquid can be easily changed to meet the needs of different application scenarios.

[0003] Current technology still has the following areas for improvement: Traditional high-pressure pneumatic plunger pumps often exhibit pressure pulses, which can lead to poor stability and fluctuations during liquid delivery, affecting delivery efficiency. Furthermore, traditional plunger pumps lack flexibility in flow regulation, making it difficult to meet the diverse liquid delivery needs of various applications, thus limiting their scope of use. Their complex structure also makes them difficult to maintain and install, hindering subsequent operation. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a dual-material automatic proportioning plunger pump, which can effectively reduce pressure pulses, ensure the stability of liquid delivery, and achieve flow regulation to meet the liquid delivery needs in different situations.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A dual-material automatic proportioning plunger pump includes a cylinder liner, an outer cylinder, and two pump barrels. A connecting handle is fixedly installed on the upper part of the cylinder liner, and an outer cylinder is fixedly connected to the lower part of the cylinder liner. A cylinder piston is installed inside the cylinder liner.

[0007] A cylinder connecting plate is fixedly installed at the lower end of the external cylinder. A second connecting rod is fixedly installed at the center of the lower end of the cylinder connecting plate. A transmission connecting rod is installed at the lower end of the second connecting rod. A transmission plate is fixedly installed at the lower end of the transmission connecting rod. Two transmission shafts are fixedly installed at the lower end of the transmission plate. Both transmission shafts are slidably installed in the support plate. Two pump cylinders are fixedly connected to the lower end of the support plate.

[0008] Furthermore, a handle O-ring is provided between the connecting handle and the cylinder liner, a first connecting rod is fixedly provided inside the cylinder piston, a stroke rod is slidably provided inside the first connecting rod, a support yoke is fixedly provided at the upper end of the stroke rod, a brake lever is rotatably provided on both sides of the support yoke, and the other ends of the two brake levers are rotatably connected to the upper end of the cylinder piston.

[0009] Furthermore, a switching rod is rotatably mounted on one side of the supporting yoke frame via a cylindrical pin. A spring is sleeved on the switching rod, and a universal joint is fixedly mounted on the other end of the switching rod. The universal joint is rotatably mounted on a fixed frame, which is fixedly connected to the upper end of the cylinder piston.

[0010] Furthermore, each of the brake levers and cylinder pistons is connected by a brake gasket, one end of which is provided with an adjusting nut, the lower end of which is fixedly provided with a nut gasket, and the upper end of the adjusting nut is provided with a safety wire.

[0011] Furthermore, a piston sealing ring is provided between the cylinder piston and the cylinder liner. The cylinder piston and the cylinder liner are fixedly connected by adjusting screws and anti-vibration pads. A first retaining ring and a copper sleeve are fitted on the lower end of the first connecting rod. A cylinder O-ring and a cylinder square sealing ring are provided between the cylinder liner and the outer cylinder. The cylinder liner and the outer cylinder are fixedly connected by bolts. Two mufflers and two nameplates are fixedly installed on the outer side of the outer cylinder in sequence.

[0012] Furthermore, the outer cylinder and the cylinder connecting plate are fixedly connected by an oil seal and a second retaining ring. Multiple supporting connecting rods are fixedly connected between the cylinder connecting plate and the support plate. A split ring and a fixing nut are provided between the second connecting rod and the transmission connecting rod. A third connecting rod is provided between the transmission plate and the transmission shaft.

[0013] Furthermore, a packing gland is provided between each of the drive shafts and the support plate, and an outlet is fixedly provided at the lower end of each packing gland. A pump cylinder is fixedly connected to the lower end of each outlet through a sealing gasket, a lower ball chamber is fixedly connected to the lower end of each pump cylinder, and an outer ball seat is fixedly connected to the lower end of each lower ball chamber.

[0014] Furthermore, each of the pump cylinders has a fourth connecting rod slidably disposed inside. The upper end of each fourth connecting rod is fixedly connected to the drive shaft by a tightening nut. The lower end of the fourth connecting rod is fixedly disposed with an upper ball chamber. The lower end of the upper ball chamber is disposed with an upper ball seat. A piston gasket, a piston ring, and a piston sleeve are sequentially sleeved on the outside of the upper ball seat. The upper ball seat is fixedly connected to the lower end of the pump cylinder.

[0015] Furthermore, each of the lower ball chambers is provided with a lower valve ball, and each of the lower ball chambers is provided with a ball-blocking rod at its lower end. Each of the upper ball chambers is provided with an upper valve ball, and each of the outlet chambers is provided with a packing upper pressure plate, PTFE packing, and packing lower pressure plate in sequence on its inner side.

[0016] Furthermore, a support frame is fixedly installed at the lower end of the cylinder connecting plate.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) By setting cylinder liners, outlet chambers and cylinder pistons, the technical effect that can be achieved is stable and uniform flow, which can effectively reduce pressure pulses and ensure the smoothness of liquid delivery; pneumatic drive with compressed air as the power source has the advantages of explosion-proof and pollution-free, and is suitable for occasions with high environmental requirements or flammable and explosive risks; higher working efficiency, and can run stably under more complex working conditions; good self-priming performance, can start in a dry state, and can achieve self-priming without filling liquid. In some special occasions, such as when far away from the liquid source, or when conveying viscous or high-viscosity liquids, it can still work efficiently.

[0019] (2) By setting up an upper ball chamber and a lower ball chamber, the technical effects that can be achieved are: strong corrosion resistance, the parts that come into contact with the liquid are usually made of corrosion-resistant materials, which can adapt to the transportation of various corrosive media; a large flow rate adjustment range, the flow rate can be adjusted by adjusting the air source pressure to meet the liquid transportation needs in different situations; a relatively simple structure, without transmission devices such as motors and reducers, small size and light weight, which is easy to install and maintain; precise control, which helps to accurately control the flow rate and velocity of the fluid; stable operation, the single-cylinder design reduces the cost of seals compared to the double-cylinder structure, and also helps to work in high-pressure environments. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is the left view of the present invention;

[0023] Figure 3 This is a front view of the present invention;

[0024] Figure 4 This is a cross-sectional view of the present invention;

[0025] Figure 5 This is an exploded view of the present invention;

[0026] Explanation of reference numerals in the attached figures:

[0027] In the diagram: 1. Connecting handle; 2. Handle O-ring; 3. Cylinder liner; 4. Support yoke frame; 5. Brake lever; 6. Safety wire; 7. Adjusting nut; 8. Brake gasket; 9. Travel rod; 10. Nut gasket; 11. Cylindrical pin; 12. Switching rod; 13. Spring; 14. Universal joint; 15. Fixing bracket; 16. Cylinder piston; 17. Piston seal; 18. Anti-vibration pad; 19. Adjusting screw; 20. First connecting rod; 21. First retaining ring; 22. Copper sleeve; 23. Cylinder O-ring; 24. Cylinder square seal; 25. Bolt; 26. Outer cylinder; 27. Nameplate; 28. Muffler; 29. ​​Oil seal; 30. Second retaining ring; 31. 32. Cylinder connecting plate; 33. Support connecting rod; 34. Second connecting rod; 35. Split ring; 36. Fixing nut; 37. Transmission connecting rod; 38. Transmission plate; 39. Third connecting rod; 40. Transmission shaft; 41. Packing gland; 42. Support plate; 43. Upper packing pressure plate; 44. PTFE packing; 45. Lower packing pressure plate; 46. Outlet cavity; 47. Sealing gasket; 48. Tightening nut; 49. Fourth connecting rod; 50. Upper ball chamber; 51. Upper valve ball; 52. Upper ball seat; 53. Piston gasket; 54. Piston ring; 55. Piston sleeve; 56. Pump barrel; 57. Lower valve ball; 58. Ball stop bar; 59. Lower ball chamber; 60. Support frame. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Reference Figures 1 to 5 The present invention discloses a dual-material automatic proportioning plunger pump, which includes a cylinder liner 3, an outer cylinder 26 and two pump barrels 55. A connecting handle 1 is fixedly installed on the upper part of the cylinder liner 3, and the outer cylinder 26 is fixedly connected to the lower part of the cylinder liner 3. A cylinder piston 16 is installed inside the cylinder liner 3.

[0032] A cylinder connecting plate 31 is fixedly installed at the lower end of the outer cylinder 26. A second connecting rod 33 is fixedly installed at the center of the lower end of the cylinder connecting plate 31. A transmission connecting rod 36 is installed at the lower end of the second connecting rod 33. A transmission plate 37 is fixedly installed at the lower end of the transmission connecting rod 36. Two transmission shafts 39 are fixedly installed at the lower end of the transmission plate 37. Both transmission shafts 39 are slidably installed in the support plate 41. Two pump cylinders 55 are fixedly connected to the lower end of the support plate 41.

[0033] A handle O-ring 2 is provided between the connecting handle 1 and the cylinder liner 3. A first connecting rod 20 is fixedly provided inside the cylinder piston 16. A stroke rod 9 is slidably provided inside the first connecting rod 20. A support yoke 4 is fixedly provided at the upper end of the stroke rod 9. A brake lever 5 is rotatably provided on both sides of the support yoke 4. The other ends of the two brake levers 5 are rotatably connected to the upper end of the cylinder piston 16.

[0034] A switching rod 12 is rotatably mounted on one side of the supporting yoke frame 4 via a cylindrical pin 11. A spring 13 is sleeved on the switching rod 12. A universal joint 14 is fixedly mounted on the other end of the switching rod 12. The universal joint 14 is rotatably mounted on a fixed frame 15. The fixed frame 15 is fixedly connected to the upper end of the cylinder piston 16.

[0035] Each brake lever 5 and cylinder piston 16 are connected by a brake pad 8. One end of the brake pad 8 is provided with an adjusting nut 7, the lower end of the brake pad 8 is fixedly provided with a nut pad 10, and the upper end of the adjusting nut 7 is provided with a safety wire 6.

[0036] A piston seal ring 17 is provided between the cylinder piston 16 and the cylinder liner 3. The cylinder piston 16 and the cylinder liner 3 are fixedly connected by an adjusting screw 19 and an anti-vibration pad 18. The lower end of the first connecting rod 20 is fitted with a first retaining ring 21 and a copper sleeve 22. A cylinder O-ring 23 and a cylinder square seal ring 24 are provided between the cylinder liner 3 and the outer cylinder 26. The cylinder liner 3 and the outer cylinder 26 are fixedly connected by bolts 25. Two mufflers 28 and two nameplates 27 are fixedly installed on the outer side of the outer cylinder 26 in sequence.

[0037] The outer cylinder 26 and the cylinder connecting plate 31 are fixedly connected by an oil seal 29 and a second retaining ring 30. Multiple supporting connecting rods 32 are fixedly connected between the cylinder connecting plate 31 and the support plate 41. A split ring 34 and a fixing nut 35 are provided between the second connecting rod 33 and the transmission connecting rod 36. A third connecting rod 38 is provided between the transmission plate 37 and the transmission shaft 39.

[0038] A packing gland 40 is provided between each drive shaft 39 and support plate 41. Each packing gland 40 has an outlet 45 fixedly provided at its lower end. Each outlet 45 has a pump cylinder 55 fixedly connected to its lower end through a sealing gasket 46. Each pump cylinder 55 has a lower ball chamber 58 fixedly connected to its lower end. Each lower ball chamber 58 has an outer ball seat 59 fixedly connected to its lower end.

[0039] Each pump cylinder 55 has a fourth connecting rod 48 slidably disposed inside. The upper end of each fourth connecting rod 48 is fixedly connected to the drive shaft 39 by a tightening nut 47. The lower end of the fourth connecting rod 48 is fixedly disposed with an upper ball chamber 49. The lower end of the upper ball chamber 49 is disposed with an upper ball seat 51. The outer side of the upper ball seat 51 is sequentially fitted with a piston gasket 52, a piston ring 53 and a piston sleeve 54. The upper ball seat 51 is fixedly connected to the lower end of the pump cylinder 55.

[0040] Each lower ball chamber 58 is equipped with a lower valve ball 56, and each lower ball chamber 58 has a ball-stopping rod 57 at its lower end. Each upper ball chamber 49 is equipped with an upper valve ball 50. The inner side of each outlet 45 is sequentially equipped with a packing upper pressure plate 42, PTFE packing 43, and a packing lower pressure plate 44. A support frame 60 is fixedly installed at the lower end of the cylinder connecting plate 31.

[0041] Both outlets 45 are provided with openings for liquid outflow, the lower end of the outer ball seat 59 is provided for liquid inflow, and the outer cylinder 26 is provided with an air port for compressed air inflow.

[0042] The flow rate is stable and uniform, effectively reducing pressure pulses and ensuring smooth liquid delivery. It is pneumatically driven, using compressed air as the power source, and has advantages such as explosion-proof and pollution-free operation, making it suitable for environments with high requirements or where there are flammable and explosive risks. It has higher working efficiency and can operate continuously and stably under relatively complex working conditions. It has good self-priming performance and can start in a dry state, achieving self-priming without filling with liquid. In some special occasions, such as when far from the liquid source or when conveying viscous or high-viscosity liquids, it can still work efficiently.

[0043] It boasts strong corrosion resistance, with its liquid-contact parts typically made of corrosion-resistant materials, making it suitable for conveying various corrosive media. It offers a wide flow rate adjustment range, allowing for flow rate regulation by adjusting the air source pressure to meet liquid conveying needs in different applications. Its relatively simple structure eliminates the need for motors, reducers, and other transmission devices, resulting in a small size, light weight, and easy installation and maintenance. Precise control facilitates accurate control of fluid flow rate and velocity. Stable operation is achieved through a single-cylinder design, which reduces sealing costs compared to a double-cylinder structure and also helps it operate under high pressure.

[0044] The working principle and usage of this invention are as follows: Liquid is drawn in and discharged through two inlets and two outlets. When compressed air enters the pump body, it pushes the plunger to reciprocate. Specifically, when the plunger moves upward, a negative pressure is created inside the pump chamber, at which point the one-way valves at the two inlets open, and liquid is drawn into the pump chamber. Conversely, when the plunger moves downward, the pressure inside the pump chamber increases, the one-way valves at the two outlets open, and liquid is discharged through the outlets.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A dual-material automatic proportioning plunger pump, characterized in that: It includes a cylinder liner, an outer cylinder, and two pump cylinders. A connecting handle is fixedly installed on the upper part of the cylinder liner, and an outer cylinder is fixedly connected to the lower part of the cylinder liner. A cylinder piston is installed inside the cylinder liner. A cylinder connecting plate is fixedly installed at the lower end of the external cylinder. A second connecting rod is fixedly installed at the center of the lower end of the cylinder connecting plate. A transmission connecting rod is installed at the lower end of the second connecting rod. A transmission plate is fixedly installed at the lower end of the transmission connecting rod. Two transmission shafts are fixedly installed at the lower end of the transmission plate. Both transmission shafts are slidably installed in the support plate. Two pump cylinders are fixedly connected to the lower end of the support plate.

2. The dual-material automatic proportioning plunger pump according to claim 1, characterized in that: An O-ring is provided between the connecting handle and the cylinder liner. A first connecting rod is fixedly provided inside the cylinder piston. A stroke rod is slidably provided inside the first connecting rod. A support yoke is fixedly provided at the upper end of the stroke rod. A brake lever is rotatably provided on both sides of the support yoke. The other ends of the two brake levers are rotatably connected to the upper end of the cylinder piston.

3. The dual-material automatic proportioning plunger pump according to claim 2, characterized in that: A switching rod is rotatably mounted on one side of the supporting yoke frame via a cylindrical pin. A spring is sleeved on the switching rod. A universal joint is fixedly mounted on the other end of the switching rod. The universal joint is rotatably mounted on a fixed frame. The fixed frame is fixedly connected to the upper end of the cylinder piston.

4. The dual-material automatic proportioning plunger pump according to claim 3, characterized in that: Each brake lever and cylinder piston is connected by a brake pad. One end of the brake pad is provided with an adjusting nut, the lower end of the brake pad is fixedly provided with a nut pad, and the upper end of the adjusting nut is provided with a safety wire.

5. The dual-material automatic proportioning plunger pump according to claim 2, characterized in that: A piston sealing ring is provided between the cylinder piston and the cylinder liner. The cylinder piston and the cylinder liner are fixedly connected by adjusting screws and anti-vibration pads. A first retaining ring and a copper sleeve are fitted on the lower end of the first connecting rod. A cylinder O-ring and a cylinder square sealing ring are provided between the cylinder liner and the outer cylinder. The cylinder liner and the outer cylinder are fixedly connected by bolts. Two mufflers and two nameplates are fixedly installed on the outer side of the outer cylinder in sequence.

6. The dual-material automatic proportioning plunger pump according to claim 1, characterized in that: The outer cylinder and the cylinder connecting plate are fixedly connected by an oil seal and a second retaining ring. Multiple supporting connecting rods are fixedly connected between the cylinder connecting plate and the support plate. A split ring and a fixing nut are provided between the second connecting rod and the transmission connecting rod. A third connecting rod is provided between the transmission plate and the transmission shaft.

7. The dual-material automatic proportioning plunger pump according to claim 1, characterized in that: A packing gland is provided between each drive shaft and support plate. Each packing gland has an outlet cavity fixedly provided at its lower end. A pump cylinder is fixedly connected to the lower end of each outlet cavity through a sealing gasket. A lower ball chamber is fixedly connected to the lower end of each pump cylinder. An outer ball seat is fixedly connected to the lower end of each lower ball chamber.

8. A dual-material automatic proportioning plunger pump according to claim 7, characterized in that: Each of the pump cylinders has a fourth connecting rod slidably disposed inside. The upper end of each fourth connecting rod is fixedly connected to the drive shaft by a tightening nut. The lower end of the fourth connecting rod is fixedly disposed with an upper ball chamber. The lower end of the upper ball chamber is disposed with an upper ball seat. A piston gasket, a piston ring, and a piston sleeve are sequentially sleeved on the outside of the upper ball seat. The upper ball seat is fixedly connected to the lower end of the pump cylinder.

9. A dual-material automatic proportioning plunger pump according to claim 8, characterized in that: Each lower ball chamber is equipped with a lower valve ball, and each lower ball chamber is equipped with a ball-blocking rod at its lower end. Each upper ball chamber is equipped with an upper valve ball, and each outlet cavity is equipped with a packing upper pressure plate, PTFE packing, and packing lower pressure plate in sequence on its inner side.

10. A dual-material automatic proportioning plunger pump according to claim 2, characterized in that: A support frame is fixedly installed at the lower end of the cylinder connecting plate.

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