Bidirectional self-suction fluid booster pump

Abstract

The bidirectional self-suction fluid booster pump comprises a pressure cylinder, cylinder barrel bodies are connected to the two ends of the pressure cylinder, the ends, relatively away from the pressure cylinder, of the cylinder barrel bodies are connected with boosting bases, the internal structures of the two boosting bases are the same, and a high-pressure outlet and a fluid suction inlet are formed in each boosting base. A first piston is slidably mounted in the cylinder barrel body, a second piston is slidably mounted in the pressure cylinder, a piston rod is connected between the first piston and the second piston, and a first fluid inlet and a second fluid inlet which are communicated with a piston cavity are formed in the pressure cylinder. When a fluid power source is injected into the first fluid inlet or the second fluid inlet, the second piston can be driven to move left and right in the piston cavity, one-way valves are arranged in the high-pressure outlet and the fluid suction inlet respectively, and the conduction directions of the two one-way valves are the same. And the pressure in one direction is enhanced, so that higher working efficiency is realized.

Description

Technical Field

[0001] This utility model relates to the field of booster pump technology, and in particular to a bidirectional self-priming fluid booster pump. Background Technology

[0002] A booster pump works by using the low air pressure of a large-area piston to generate high pressure from a small-area piston, thereby pressurizing the fluid. To solve the problem of insufficient pressure in fluid pipelines, we usually connect a booster pump in series to increase the pipeline pressure. However, booster pumps currently on the market generally have only one inlet and one outlet, which cannot achieve bidirectional pressure boosting, causing many inconveniences for users. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a bidirectional self-priming fluid booster pump.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bidirectional self-priming fluid booster pump, comprising a booster cylinder, with cylinder bodies connected to both ends of the booster cylinder, and a booster base connected to the end of the cylinder body relatively away from the booster cylinder. The two sets of booster bases have identical internal structures. A high-pressure outlet and a fluid inlet are provided on the booster base. A first piston is slidably installed inside the cylinder body, and a second piston is slidably installed inside the booster cylinder. The diameter of the first piston is smaller than the diameter of the second piston. A piston rod is connected between the first piston and the second piston. A first fluid inlet and a second fluid inlet communicating with the piston cavity are respectively provided on the booster cylinder. When a fluid power source is injected into the first fluid inlet or the second fluid inlet, the second piston can be driven to move left and right in the piston cavity. A one-way valve is provided in the high-pressure outlet and the fluid inlet, and the two one-way valves have the same conduction direction. The high-pressure outlet and the fluid inlet are coaxially arranged.

[0005] As a preferred technical solution of this utility model, the pressurizing base is provided with an intermediate flow channel corresponding to the position of the first piston, and is also provided with a first fluid channel and a second fluid channel perpendicular to both sides of the intermediate flow channel. The first fluid channel and the second fluid channel correspond to the high pressure outlet and the fluid inlet, respectively.

[0006] As a preferred embodiment of the present invention, each of the one-way valves includes a compression spring and a steel ball arranged from top to bottom. A valve port is provided in both the first fluid channel and the second fluid channel. The compression spring is confined within the corresponding fluid channel, and the steel ball closes the valve port under the action of the compression spring.

[0007] As a preferred embodiment of the present invention, the booster base extends into the cylinder body, and the middle flow channel has an opening at one end facing the cylinder body.

[0008] As a preferred technical solution of this utility model, a two-position four-way reversing valve is also provided, which is connected to the first fluid inlet and the second fluid inlet.

[0009] As a preferred embodiment of this utility model, a sealing ring is provided around the outer periphery of the first piston, and the outer peripheral wall of the sealing ring abuts against the inner peripheral wall of the cylinder body.

[0010] As a preferred embodiment of this utility model, a sealing ring is provided around the outer periphery of the second piston, and the outer peripheral wall of the sealing ring abuts against the inner peripheral wall of the cylinder body.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the bidirectional self-priming fluid booster pump can adjust the oil flow in two directions according to different needs and enhance the pressure in one direction in order to achieve higher working efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the pressurization base in this utility model.

[0014] Reference numerals: 1. Booster cylinder; 2. Cylinder body; 3. Booster base; 4. High-pressure outlet; 5. Fluid inlet; 6. First piston; 7. Second piston; 8. Piston rod; 9. First fluid inlet; 10. Second fluid inlet; 11. Piston chamber; 12. Check valve; 13. Intermediate flow channel; 14. First fluid passage; 15. Second fluid passage; 16. Compression spring; 17. Steel ball; 18. Valve port; 19. Opening; 20. Directional valve; 21. Sealing ring. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 utility model based on the specific circumstances.

[0018] like Figure 1 , 2 The illustrated bidirectional self-priming fluid booster pump includes a booster cylinder 1. A cylinder body 2 is connected to both ends of the booster cylinder 1. A booster base 3 is connected to the end of the cylinder body 2 furthest from the booster cylinder 1. The two booster bases 3 and the two cylinder bodies 2 have identical internal structures. A high-pressure outlet 4 and a fluid inlet 5 are provided on the booster base 3. A first piston 6 is slidably mounted inside the cylinder body 2, and a second piston 7 is slidably mounted inside the booster cylinder 1. The diameter of the first piston 6 is smaller than the diameter of the second piston 7. A piston rod 8 connects the first piston 6 and the second piston 7. A first fluid inlet 9 and a second fluid inlet 10, respectively, are provided on the booster cylinder 1, communicating with the piston chamber 11. It also includes a two-position four-way directional valve 20 connected to the first fluid inlet 9 and the second fluid inlet 10. When a fluid power source is injected into the first fluid inlet 9 or the second fluid inlet 10, it can drive the second piston 7 to move left and right in the piston chamber 11. One-way valves 12 are respectively provided in the high-pressure outlet 4 and the fluid inlet 5, and the conduction directions of the two one-way valves 12 are the same. The high-pressure outlet 4 and the fluid inlet 5 are coaxially arranged. The booster pump of this application can be applied to hydraulic mechanical equipment or industrial automation equipment and other fields. The left fluid inlet 5 and the right fluid inlet 5 can be connected in parallel or independently. The left high-pressure outlet 4 and the right high-pressure outlet 4 can be connected in parallel or independently.

[0019] The pressurizing base 3 is provided with an intermediate flow channel 13 corresponding to the position of the first piston 6, and also with a first fluid channel 14 and a second fluid channel 15 perpendicular to both sides of the intermediate flow channel 13. The first fluid channel 14 and the second fluid channel 15 correspond to the high pressure outlet 4 and the fluid inlet 5, respectively.

[0020] Each check valve 12 includes a compression spring 16 arranged from top to bottom and a steel ball 17. A valve port 18 is provided in both the first fluid channel 14 and the second fluid channel 15. The compression spring 16 is limited to the corresponding fluid channel and the steel ball 17 closes the valve port 18 under the action of the compression spring 16. In this embodiment, a total of four check valves 12 are provided.

[0021] The booster base 3 extends into the cylinder body 2, and the middle flow channel 13 has an opening 19 at one end facing the cylinder body 2.

[0022] The first piston 6 is fitted with a sealing ring 21 on its outer periphery, and the outer peripheral wall of the sealing ring 21 abuts against the inner peripheral wall of the cylinder body 2. The second piston 7 is fitted with a sealing ring 21 on its outer periphery, and the outer peripheral wall of the sealing ring 21 abuts against the inner peripheral wall of the cylinder body 2.

[0023] Working principle:

[0024] A bidirectional self-priming fluid booster pump can adjust the flow of oil in two directions according to different needs and increase the pressure in one direction to achieve higher working efficiency.

[0025] When the fluid power source is injected into the P port of the reversing valve 20, it is injected into the piston chamber 11 through the reversing port B. Under the pressure of the power source, the second piston 7 drives the two first pistons 6 to move to the left at the same time. The first piston 6 on the left squeezes the fluid in its chamber, and the one-way valve 12 in the second fluid channel 15 closes, forcing the fluid to be squeezed out from the one-way valve 12 in the first fluid channel 14 and pass through the left high pressure outlet 4. At the same time, the first piston 6 on the right moves to the left, causing a vacuum to be generated in the cavity of the cylinder body 2. Under the vacuum state, the one-way valve 12 in the right second fluid channel 15 opens and draws in fluid from the right fluid inlet 5, completing one self-priming pressurization action.

[0026] When the fluid power source is injected into port A of the reversing valve 20, the second piston 7 moves to the right. Under the pressure of the power source, the second piston 7 drives the two first pistons 6 to move to the right simultaneously. The right piston compresses the fluid in the cavity of the first piston 6, and the one-way valve 12 in the right second fluid channel 15 closes, forcing the fluid to be squeezed out from the one-way valve 12 in the right first fluid channel 14 and through the right high-pressure outlet 4. At the same time, the left first piston 6 moves to the right, creating a vacuum in the cylinder body. Under the vacuum state, the one-way valve 12 in the left second fluid channel 15 opens and draws in fluid from the left fluid inlet 5. This completes the second self-priming booster action, forming the reciprocating motion of the booster pump under the switching of the reversing valve 20.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of this utility model and are not intended to limit it. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A bidirectional self-priming fluid booster pump, comprising a booster cylinder (1), wherein cylinder bodies (2) are connected to both ends of the booster cylinder (1), and a booster base (3) is connected to one end of the cylinder body (2) that is relatively far from the booster cylinder (1). The two sets of booster bases (3) have the same internal structure. A high-pressure outlet (4) and a fluid inlet (5) are provided on the booster base (3). A first piston (6) is slidably installed inside the cylinder body (2), and a second piston (7) is slidably installed inside the booster cylinder (1). The diameter of the first piston (6) is smaller than the diameter of the second piston (7). A piston rod (8) is connected between the first piston (6) and the second piston (7). A first fluid inlet (9) and a second fluid inlet (10) communicating with a piston cavity (11) are respectively provided on the booster cylinder (1). When a fluid power source is injected into the first fluid inlet (9) or the second fluid inlet (10), the second piston (7) can be driven to move left and right in the piston cavity (11). The pump is characterized in that: One-way valves (12) are respectively provided in the high-pressure outlet (4) and the fluid inlet (5), and the two one-way valves (12) have the same conduction direction. The high-pressure outlet (4) and the fluid inlet (5) are coaxially arranged.

2. The bidirectional self-priming fluid booster pump according to claim 1, characterized in that: The pressurizing base (3) is provided with an intermediate flow channel (13) corresponding to the position of the first piston (6), and is also provided with a first fluid channel (14) and a second fluid channel (15) perpendicular to both sides of the intermediate flow channel (13). The first fluid channel (14) and the second fluid channel (15) correspond to the high pressure outlet (4) and the fluid inlet (5), respectively.

3. The bidirectional self-priming fluid booster pump according to claim 2, characterized in that: Each of the one-way valves (12) includes a compression spring (16) arranged from top to bottom and a steel ball (17). A valve port (18) is provided in the first fluid channel (14) and the second fluid channel (15). The compression spring (16) is located in the corresponding fluid channel and the steel ball (17) closes the valve port (18) under the action of the compression spring (16).

4. The bidirectional self-priming fluid booster pump according to claim 2, characterized in that: The booster base (3) extends into the cylinder body (2), and the intermediate flow channel (13) has an opening (19) at one end facing the cylinder body (2).

5. The bidirectional self-priming fluid booster pump according to claim 1, characterized in that: It is also equipped with a two-position four-way directional valve (20) that communicates with the first fluid inlet (9) and the second fluid inlet (10).

6. The bidirectional self-priming fluid booster pump according to claim 1, characterized in that: The first piston (6) is fitted with a sealing ring (21) on its outer periphery, and the outer periphery of the sealing ring (21) abuts against the inner periphery of the cylinder body (2).

7. The bidirectional self-priming fluid booster pump according to claim 1, characterized in that: The second piston (7) is fitted with a sealing ring (21) on its outer periphery, and the outer periphery of the sealing ring (21) abuts against the inner periphery of the cylinder body (2).

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