Swash plate piston pump

Abstract

The utility model provides a swash plate piston pump, and belongs to the technical field of piston pumps. The problem that in the prior art, a piston pump is insufficient in damping effect is solved. The rotor comprises an outer shell, a rotor shaft, a flange plate, a swash plate and a piston cylinder, a first conical bearing and a second conical bearing are fixedly sleeved on the rotor shaft, the flange plate is sleeved outside the first conical bearing and the rotor shaft, the second conical bearing is attached to one side of the flange plate, and the swash plate is sleeved at the other end of the rotor shaft. A plurality of universal balls are fixedly installed on one side of the swash plate, piston columns are fixedly connected to the universal balls, damping springs are fixed to the outer sides of the piston columns, a plurality of connecting grooves are formed in one side of the piston air cylinder, connecting columns are formed in the centers of the connecting grooves, connecting holes are formed in the connecting columns, the piston columns are fixedly connected with the connecting holes, and the damping springs are installed in the connecting grooves. And the outer shell covers the outer sides of the rotor shaft, the flange plate, the swash plate and the piston cylinder. The damping device has the advantage of being good in damping effect.

Description

Technical Field

[0001] This utility model belongs to the field of piston pump technology and relates to a swashplate piston pump. Background Technology

[0002] Piston pumps, also known as electric reciprocating pumps, use the reciprocating action of a piston in a cylinder to repeatedly change the volume of the cylinder, thereby drawing in and discharging fluid. They are characterized by their high head.

[0003] Chinese patent publication number CN218235458U discloses a piston pump, comprising: a housing having a receiving cavity extending in a predetermined direction, a first groove formed on a first sidewall of the receiving cavity, a second groove formed on a second sidewall of the first groove, both the first groove and the second groove extending in the predetermined direction; a piston, housed in the receiving cavity and used for reciprocating in the predetermined direction; the piston including a body and an anti-rotation boss, the anti-rotation boss being disposed on the outer periphery of the body, the anti-rotation boss having a third groove, the anti-rotation boss being in close contact with the second sidewall, the third groove and the second groove being opposite to each other and together forming a receiving hole; and a guide rod inserted into the receiving hole.

[0004] In the piston pump provided by this patent, a guide rod is connected to the receiving hole to achieve a fixing function. This structure lacks a shock absorption device and is easily affected by vibration during use. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a swashplate piston pump.

[0006] The objective of this utility model can be achieved through the following technical solution: A swashplate piston pump includes a housing, a rotor shaft, a flange, a swashplate, and a piston cylinder. A first tapered bearing and a second tapered bearing are fixedly mounted on the rotor shaft. The flange is fitted around the first tapered bearing and the rotor shaft. The second tapered bearing is in contact with one side of the flange. The swashplate is fitted around the other end of the rotor shaft. Several universal balls are fixedly installed on one side of the swashplate. A piston rod is fixedly connected to the universal balls. A shock-absorbing spring is fixedly installed on the outside of the piston rod. Several connecting grooves are opened on one side of the piston cylinder. A connecting post is formed at the center of the connecting groove. A connecting hole is opened in the connecting post. The piston rod is fixedly connected to the connecting hole. The shock-absorbing spring is installed in the connecting groove. The housing covers the rotor shaft, flange, swashplate, and piston cylinder.

[0007] In the aforementioned swashplate piston pump, a sealing plate is fixedly connected to one end of the piston cylinder, and the sealing plate is sealed to one end of the outer casing.

[0008] In the aforementioned swashplate piston pump, the outer casing is an integral structure, and one end of the outer casing is formed as a connecting circle.

[0009] In the aforementioned swashplate piston pump, several check valves are fixedly installed at the other end of the piston cylinder.

[0010] Compared with the prior art, the swashplate piston pump provided by this utility model has the following beneficial effects: by setting a connecting groove and a connecting column on the piston cylinder, with the connecting column set in the middle of the connecting groove, the piston column extending into the connecting hole inside the connecting column and fixedly connected to the connecting column, and the shock-absorbing spring extending into the connecting groove and fixedly connected to the piston cylinder, the shock absorption effect when the piston cylinder is connected to the swashplate is effectively improved. Moreover, the piston column and the swashplate are connected by a universal ball, which can transmit a large angle deviation, further improving the shock absorption effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0014] Figure 4 This is a schematic diagram of a piston cylinder structure.

[0015] In the diagram: 1. Outer shell; 110. Connecting circle; 2. Rotor shaft; 3. Flange; 4. Swashplate; 5. Piston cylinder; 51. Connecting groove; 52. Connecting column; 53. Connecting hole; 6. First tapered bearing; 7. Second tapered bearing; 8. Universal ball; 9. Piston column; 10. Shock-absorbing spring; 11. Sealing plate; 12. Check valve. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figures 1 to 3 As shown, this embodiment includes an outer shell 1, a rotor shaft 2, a flange 3, a swashplate 4, and a piston cylinder 5. The outer shell 1 covers the rotor shaft 2, flange 3, swashplate 4, and piston cylinder 5. The outer end of the flange 3 is fitted with the inner wall of the outer shell 1 to achieve a sealing effect. The front end of the flange 3 has a conical structure and extends out of the outer shell 1. A first conical bearing 6 and a second conical bearing 7 are fixedly mounted on the rotor shaft 2. The second conical bearing 7 is larger than the first conical bearing 6. The flange 3 is fitted outside the first conical bearing 6 and the rotor shaft 2. The second conical bearing 7 is fitted with the inner side of the flange 3.

[0018] like Figures 1 to 4As shown, a swashplate 4 is fitted onto the other end of the rotor shaft 2. Several universal balls 8 are fixedly installed on one side of the swashplate 4. Piston pins 9 are fixedly connected to the other end of the universal balls 8. A damping spring 10 is fixed to the outside of each piston pin 9. A connecting groove 51, the same number as the piston pins 9, is opened on the side of the piston cylinder 5 near the swashplate 4. A connecting post 52 is formed at the center of the connecting groove 51. A connecting hole 53 is opened in the connecting post 52. During connection, one end of the piston pin 9 extends into the connecting hole 53 and is fixedly connected to the connecting post 52. The damping spring 10 is installed in the gap between the connecting post 52 and the connecting groove 51 and is connected to the piston cylinder 5 at the end of the connecting groove 51. Several check valves are fixedly installed on the other end of the piston cylinder 5. 12

[0019] To elaborate further, such as Figures 1 to 3 As shown, a sealing plate 11 is fixedly connected to one end of the piston cylinder 5. The sealing plate 11 is sealed to one end of the outer shell 1, and the sealing plate 11 plays a sealing role between the outer shell 1 and the piston cylinder 5.

[0020] To elaborate further, such as Figures 1 to 3 As shown, the outer shell 1 is an integral structure. The end of the outer shell 1 near the flange 3 is formed into a larger connecting circle 110. The connecting circle 110 facilitates the fixed connection with other fasteners in this embodiment.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0022] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A swashplate piston pump, comprising a housing (1), a rotor shaft (2), a flange (3), a swashplate (4), and a piston cylinder (5), wherein a first tapered bearing (6) and a second tapered bearing (7) are sleeved and fixed on the rotor shaft (2), characterized in that: The flange (3) is sleeved on the outside of the first tapered bearing (6) and the rotor shaft (2). The second tapered bearing (7) is in contact with one side of the flange (3). The swash plate (4) is sleeved on the other end of the rotor shaft (2). Several universal balls (8) are fixedly installed on one side of the swash plate (4). A piston column (9) is fixedly connected to the universal ball (8). A shock-absorbing spring (10) is fixed on the outside of the piston column (9). Several connecting grooves (51) are opened on one side of the piston cylinder (5). A connecting column (52) is formed at the center of the connecting groove (51). A connecting hole (53) is opened in the connecting column (52). The piston column (9) is fixedly connected to the connecting hole (53). The shock-absorbing spring (10) is installed in the connecting groove (51). The outer shell (1) covers the outside of the rotor shaft (2), the flange (3), the swash plate (4), and the piston cylinder (5).

2. The swashplate piston pump according to claim 1, characterized in that: A sealing plate (11) is fixedly connected to one end of the piston cylinder (5), and the sealing plate (11) is sealed to one end of the outer shell (1).

3. The swashplate piston pump according to claim 1, characterized in that: The outer shell (1) is an integral structure, and one end of the outer shell (1) is formed as a connecting circle (110).

4. A swashplate piston pump according to claim 1, characterized in that: Several check valves (12) are fixedly installed at the other end of the piston cylinder (5).

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