Backflow prevention type fluid pump

Abstract

The utility model discloses an anti-backflow fluid pump, which relates to the technical field of fluid transportation and comprises a shell, two pump bodies are fixedly connected in the shell, pump body cavities are arranged in the pump bodies, piston discs are slidably connected in the pump body cavities, a discharge valve plate is arranged in the pump body cavities and located on the right side of a discharge port, and the discharge valve plate is connected with the piston discs. And the feeding valve plate and the discharging valve plate are fixedly connected with springs. The two pump bodies just carry out alternative material conveying and are driven by the same driving source, movement coordination of the two pump bodies is guaranteed, the alternative operation mode enables output of fluid to be always kept continuous, pressure of the fluid can be maintained to be stable, meanwhile, the conveying amount of the fluid is increased, and in the alternative material conveying process, the working efficiency is improved. Starting, stopping and rotating speed changes of the two pump bodies are controlled by the same driving system, and the phenomenon that the pump bodies work asynchronously due to the difference between different driving sources is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid transportation, in particular to an anti-backflow fluid pump. Background Art

[0002] In the field of fluid transportation, pumps are crucial devices, and their performance and efficiency directly affect the production and operation in many industrial and civil fields. However, there are some defects in the existing fluid pump technologies in practical applications.

[0003] When a traditional single-pump body fluid pump is operating, it is often difficult to achieve a large transportation volume while ensuring the stable transportation of the fluid. Since only one pump body is working, when facing a large flow demand, the pump body may become unstable during operation, such as flow rate fluctuations and pressure changes. This not only affects the transportation stability, but also because the plunger disk inside the pump body moves up and down to transport the fluid, resulting in the fluid being sucked into the pump body chamber for a period of time before being discharged during the transportation process, which causes the fluid not to be transported stably all the time. Content of the Utility Model

[0004] Technical Problem to be Solved

[0005] The purpose of the utility model is to make up for the deficiencies of the existing technology and provide an anti-backflow fluid pump.

[0006] Technical Solution

[0007] To achieve the above purpose, the utility model provides the following technical solution: an anti-backflow fluid pump, including a housing, two pump bodies are fixedly connected inside the housing, a pump body chamber is opened inside the pump body, a piston disk is slidably connected inside the pump body chamber, a piston column is fixedly connected to the top of the piston disk, a feeding port is opened on the left side of the pump body chamber, a feeding valve plate is hinged on the right side of the feeding port inside the pump body chamber, a discharging port is opened on the right side inside the pump body chamber, a discharging valve plate is opened on the right side of the discharging port inside the pump body chamber, and springs are fixedly connected to the feeding valve plate and the discharging valve plate.

[0008] As described above, a feeding connecting pipe is fixedly connected to the right side of the housing, two shunt pipes are fixedly connected to the feeding connecting pipe, the shunt pipes are fixedly connected to the pump body, a converging chamber is fixedly connected to the left side of the pump body, two discharging pipes are fixedly connected to the converging chamber, and discharging valves are arranged on the discharging pipes.

[0009] As described above, a driving source is fixedly connected to the inner wall of the housing, a crankshaft is fixedly connected to the driving end of the driving source, a crankshaft disk is fixedly connected to the crankshaft, a crank is rotatably connected to the crankshaft disk, a crank ring is rotatably connected to the crank, and the crank ring is fixedly connected to the piston column.

[0010] As described above, the feed valve plate is adapted to the feed port, the discharge valve plate is adapted to the discharge port, and the feed port and the discharge port are respectively located on the left and right sides inside the pump body chamber.

[0011] As described above, a heat dissipation channel is fixedly connected to the top of the housing, and a heat dissipation fan is fixedly connected inside the heat dissipation channel.

[0012] As described above, a control board is fixedly connected to the front of the housing. The control board is electrically connected to the drive source and the control board is electrically connected to the heat dissipation fan.

[0013] As described above, a mounting plate is fixedly connected to the bottom of the housing, and mounting holes are provided on the mounting plate.

[0014] The technical solution provided by the present utility model has the following beneficial effects compared with the prior art:

[0015] By providing two pump bodies, the present utility model ensures that the fluid pump can stably output fluid. Starting the drive source, which can be a motor or a runner driven by a motor, drives the crankshaft to rotate. The piston disc tightly fits on the inner surface of the pump body chamber. Due to the movement restriction, the crank on the crankshaft rotates within the inner surface of the crank ring on the piston column, thereby driving the piston disc to slide up and down inside the pump body chamber. Due to the influence of the crankshaft, the positions of the crankshaft discs are opposite, which can drive the two piston discs to perform alternating movements. When one piston disc moves upward to suck fluid, the other piston disc moves downward to discharge fluid to the confluence chamber, so that there is always fluid flowing into the confluence chamber. The two pump bodies just perform alternating material transportation and are driven by the same drive source to ensure the coordination of their movements. This alternating operation mode makes the output of the fluid always maintain continuity, can maintain the stability of the fluid pressure, and at the same time increases the fluid delivery volume. And during the alternating feeding process, the start, stop, and speed change of the two pump bodies are all controlled by the same drive system, avoiding the phenomenon of asynchronous operation of the pump bodies caused by the differences between different drive sources.

[0016] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is an internal structural schematic diagram of the present utility model;

[0019] Figure 3Schematic cross-sectional structure diagram of the main body of the present utility model;

[0020] Figure 4 is Figure 2 Enlarged schematic view of part A shown in the figure.

[0021] In the figure: 1. Outer shell; 2. Pump body; 3. Pump body chamber; 4. Piston disc; 5. Piston column; 6. Feed inlet; 7. Feed valve plate; 8. Discharge outlet; 9. Discharge valve plate; 10. Spring; 11. Feed connecting pipe; 12. Shunt pipe; 13. Confluence chamber; 14. Discharge pipe; 15. Discharge valve; 16. Drive source; 17. Crankshaft; 18. Crankshaft disc; 19. Crank; 20. Crank ring; 21. Heat dissipation channel; 22. Heat dissipation fan; 23. Control board; 24. Mounting plate; 25. Mounting hole. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Such as Figures 1-4As shown in the figure, the present utility model provides a technical solution: a backflow prevention type fluid pump, which includes a housing 1. Two pump bodies 2 are fixedly connected inside the housing 1. A pump body chamber 3 is provided inside the pump body 2. A piston disk 4 is slidably connected inside the pump body chamber 3. A piston column 5 is fixedly connected to the top of the piston disk 4. A feed inlet 6 is provided on the left side of the pump body chamber 3. A feed valve plate 7 is hinged inside the pump body chamber 3 to the right of the feed inlet 6. A discharge outlet 8 is provided on the right side inside the pump body chamber 3. A discharge valve plate 9 is provided inside the pump body chamber 3 to the right of the discharge outlet 8. Springs 10 are fixedly connected to the feed valve plate 7 and the discharge valve plate 9. A feed connection pipe 11 is fixedly connected to the right side of the housing 1. Two shunt pipes 12 are fixedly connected to the feed connection pipe 11. The shunt pipes 12 are fixedly connected to the pump body 2. A confluence chamber 13 is fixedly connected to the left side of the pump body 2. Two discharge pipes 14 are fixedly connected to the confluence chamber 13. A discharge valve 15 is provided on the discharge pipe 14. A drive source 16 is fixedly connected to the inner wall of the housing 1. The drive end of the drive source 16 is fixedly connected to a crankshaft 17. A crankshaft disk 18 is fixedly connected to the crankshaft 17. A crank 19 is rotatably connected to the crankshaft disk 18. A crank ring 20 is rotatably connected to the crank 19. The crank ring 20 is fixedly connected to the piston column 5. The feed valve plate 7 is adapted to the feed inlet 6, and the discharge valve plate 9 is adapted to the discharge outlet 8. The feed inlet 6 and the discharge outlet 8 are respectively located on the left and right sides inside the pump body chamber 3. By providing two pump bodies 2, it is ensured that the fluid pump can stably output fluid. Starting the drive source 16, which can be a motor or a runner driven by a motor, drives the crankshaft 17 to rotate. The piston disk 4 tightly fits on the inner surface of the pump body chamber 3. Due to the movement restriction, the crank 19 on the crankshaft 17 rotates inside the crank ring 20 on the piston column 5, thereby driving the piston disk 4 to slide up and down inside the pump body chamber 3. Due to the influence of the crankshaft 17, the positions of its crankshaft disks 18 are opposite, and it can drive two piston disks 4 to perform alternating movements. When one piston disk 4 moves upward to suck fluid, the other piston disk 4 moves downward to discharge fluid into the confluence chamber 13, so that there is always fluid flowing into the confluence chamber 13. The two pump bodies 2 just perform alternating material transportation and are driven by the same drive source 16 to ensure the coordination of their movements. When the pump body 2 is working and the piston disk 4 moves upward, due to the influence of the spring 10 and the reduced internal pressure, the discharge valve plate 9 tightly adheres to the discharge outlet 8, and at the same time the feed valve plate 7 opens, which can prevent the fluid that has been discharged from the pump body 2 into the confluence chamber 13 from flowing back. When the piston disk 4 moves downward, similarly, the feed valve plate 7 closes tightly and the discharge valve plate 9 opens to prevent the fluid that has entered the chamber from flowing back.

[0024] As Figure 1As shown in the figure, a heat dissipation channel 21 is fixedly connected to the top of the outer shell 1. A heat dissipation fan 22 is fixedly connected inside the heat dissipation channel 21. A control board 23 is fixedly connected to the front of the outer shell 1. The control board 23 is electrically connected to the drive source 16 and the heat dissipation fan 22. An installation plate 24 is fixedly connected to the bottom of the outer shell 1. Installation holes 25 are provided on the installation plate 24. The heat dissipation fan 22 on the heat dissipation channel 21 can cool the drive source 16. A shock pad is provided at the bottom of the installation plate 24. After the device is installed, it can avoid loosening of the installation due to vibration.

[0025] Working principle: By setting two pump bodies 2, it is ensured that the fluid pump can stably output fluid. Starting the drive source 16, which can be a motor or a runner driven by a motor, drives the crankshaft 17 to rotate. The piston disc 4 closely fits on the inner surface of the pump body chamber 3. Due to the movement limitation, the crank 19 on the crankshaft 17 rotates inside the crank ring 20 on the piston column 5, thereby driving the piston disc 4 to slide up and down inside the pump body chamber 3. Due to the influence of the crankshaft 17, the positions of its crankshaft discs 18 are opposite, and it can drive two piston discs 4 to perform alternating movements. When one piston disc 4 moves upward to suck fluid, the other piston disc 4 moves downward to discharge fluid to the confluence chamber 13, so that there is always fluid flowing into the confluence chamber 13. The two pump bodies 2 just perform alternating material transportation and are driven by the same drive source 16 to ensure the coordination of their movements.

[0026] It should be noted that in this article, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "fixedly installed", "installed", "connected", "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A backflow prevention type fluid pump, comprising a housing (1), characterized in that: Inside the said housing (1), two pump bodies (2) are fixedly connected. Inside the pump body (2), a pump body chamber (3) is provided. Inside the pump body chamber (3), a piston disc (4) is slidably connected. At the top of the piston disc (4), a piston rod (5) is fixedly connected. On the left side of the pump body chamber (3), a feeding port (6) is provided. Inside the pump body chamber (3), on the right side of the feeding port (6), a feeding valve plate (7) is hinged. On the right side inside the pump body chamber (3), a discharging port (8) is provided. Inside the pump body chamber (3), on the right side of the discharging port (8), a discharging valve plate (9) is provided. A spring (10) is fixedly connected to the feeding valve plate (7) and the discharging valve plate (9).

2. The anti-backflow type fluid pump according to claim 1, characterized in that: On the right side of the said housing (1), a feeding connection pipe (11) is fixedly connected. On the feeding connection pipe (11), two shunt pipes (12) are fixedly connected. The shunt pipe (12) is fixedly connected to the pump body (2). On the left side of the pump body (2), a converging chamber (13) is fixedly connected. On the converging chamber (13), two discharging pipes (14) are fixedly connected. On the discharging pipe (14), a discharging valve (15) is provided.

3. The anti-backflow type fluid pump according to claim 1, characterized in that: On the inner wall of the said housing (1), a driving source (16) is fixedly connected. At the driving end of the driving source (16), a crankshaft (17) is fixedly connected. On the crankshaft (17), a crankshaft disc (18) is fixedly connected. On the crankshaft disc (18), a crank (19) is rotatably connected. On the crank (19), a crank ring (20) is rotatably connected. The crank ring (20) is fixedly connected to the piston rod (5).

4. The anti-backflow type fluid pump according to claim 1, characterized in that: The feeding valve plate (7) is adapted to the feeding port (6), and the discharging valve plate (9) is adapted to the discharging port (8). The feeding port (6) and the discharging port (8) are respectively located on the left and right sides inside the pump body chamber (3).

5. The anti-backflow type fluid pump according to claim 1, characterized in that: On the top of the said housing (1), a heat dissipation channel (21) is fixedly connected. Inside the heat dissipation channel (21), a heat dissipation fan (22) is fixedly connected.

6. The anti-backflow type fluid pump according to claim 1, characterized in that: On the front of the said housing (1), a control board (23) is fixedly connected. The control board (23) is electrically connected to the driving source (16), and the control board (23) is electrically connected to the heat dissipation fan (22).

7. The anti-backflow type fluid pump according to claim 1, wherein: On the bottom of the said housing (1), a mounting plate (24) is fixedly connected. On the mounting plate (24), mounting holes (25) are provided.

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