A plunger pump

Abstract

The utility model discloses a plunger pump, including a plunger pump body, a housing mounting connection frame, a reduction motor and a motor junction box. The housing bracket is mounted with the housing of the reduction motor, the motor junction box is fixedly arranged on one side of the reduction motor, two symmetrical wiring mounting holes are arranged on one side of the motor junction box, a wiring limit plate is arranged on the top of one side of the motor junction box, a U-shaped connection frame is arranged at two hole positions of the wiring limit plate, stud sections are arranged at both ends of the U-shaped connection frame, the two stud sections pass through corresponding hole positions and are provided with connecting nuts. The utility model can limit the power wiring, improve the stability of the power wiring, prevent the wiring from loosening, and avoid poor contact by arranging a wiring limit plate on the top of one side of the motor junction box, arranging a U-shaped connection frame at two hole positions of the wiring limit plate, and arranging stud sections at both ends of the U-shaped connection frame, which pass through corresponding hole positions and are provided with connecting nuts.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pumps, in particular to a plunger pump. Background Art

[0002] The plunger pump is an important device in the hydraulic system. It relies on the reciprocating motion of the plunger in the cylinder body to change the volume of the sealed working chamber to achieve oil suction and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment; Patent No. CN201721736748.3 discloses a plunger pump, which solves the drawbacks of the plunger pump being unstable and inaccurate when used. The key points of its technical solution are that it includes a drive motor and a pump body fixedly connected to the drive motor, and also includes a support seat fixedly connected along the length direction of the drive motor. The support seat is welded to the housing of the drive motor and has a mounting portion extending on both sides of the drive motor. The mounting portion is provided with a perforation, and the mounting portion is embedded with a rubber pad for support in the perforation, and the rubber pad is provided with a mounting hole concentric with the perforation for installation. The utility model is a plunger pump that can be stably installed while reducing vibration during operation and reducing damage to the pump body and the motor.

[0003] The disadvantage of the plunger pump disclosed above is that when the junction box of the motor is connected to an external power line, it is unable to better limit the power connection, which easily causes the connection to become loose. For this reason, we design a plunger pump. Utility Model Content

[0004] The purpose of the utility model is to provide a plunger pump to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plunger pump, comprising a plunger pump body, a shell mounting connection frame, a reduction motor and a motor junction box, a connecting pad is arranged on one side of the shell mounting connection frame, one end of the connecting pad is threadedly connected to the plunger pump body, a shell bracket is arranged on the other side of the shell mounting connection frame, the shell bracket is installed with the shell of the reduction motor, the motor junction box is fixedly arranged on one side of the reduction motor, two symmetrical wiring mounting holes are arranged on one side of the motor junction box, a wiring limit plate is arranged on the top of one side of the motor junction box, a U-shaped connecting frame is arranged at the two hole positions of the wiring limit plate, stud sections are arranged at both ends of the U-shaped connecting frame, the two stud sections respectively pass through the corresponding hole positions and are provided with connecting nuts.

[0006] Preferably, an annular mounting sleeve is provided at the center of the other side of the housing mounting connection frame, and a sound-absorbing cotton ring is provided on the outer ring of the annular mounting sleeve. The purpose of this arrangement is to better facilitate installation and reduce the noise of the reduction motor rotation.

[0007] Preferably, the oil inlet and outlet of the plunger pump body are both provided with sealing flanges, and one end of the two sealing flanges is provided with a sealing sleeve. A metal filter screen is provided inside the sealing sleeve, and the thickness of the metal filter screen is equal to the diameter of the sealing sleeve. The purpose of such a setting is to better connect, improve the connection sealing and connection accuracy, have a good filtering effect, and reduce the entry of impurities into the plunger pump body.

[0008] Preferably, a sealing end cap is provided at one end of the reduction motor, and a heat dissipation vent plate is provided on one side of the sealing end cap. The purpose of such a setting is to better dissipate heat from the reduction motor, improve the heat dissipation performance of the reduction motor, and make the reduction motor have good thermal conductivity during operation.

[0009] Preferably, a soft rubber pad is provided at the crossbeam of the U-shaped connecting frame, so as to reduce the influence of the rigidity of the U-shaped connecting frame on the wiring.

[0010] Technical effects and advantages of the utility model:

[0011] (1) The utility model relates to a plunger pump. A wiring limit plate is arranged at the top of one side of a motor terminal box. A U-shaped connecting frame is arranged at two holes of the wiring limit plate. Stud sections are arranged at both ends of the U-shaped connecting frame. The stud sections pass through corresponding holes and connecting nuts are arranged. The power wiring can be limited to improve the stability of the power wiring, prevent the wiring from loosening, and avoid poor contact. A sealing flange is arranged at the oil inlet and outlet of the plunger pump body, and a sealing socket is arranged at one end of the sealing flange. A metal filter baffle is arranged inside the sealing socket. The thickness of the metal filter baffle is equal to the diameter of the sealing socket. In order to better connect and improve the connection sealing and connection accuracy, a metal filter baffle is arranged at the same time. It has a good filtering effect and reduces the entry of impurities into the plunger pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the shell installation connecting frame of the utility model.

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the motor junction box of the utility model.

[0015] In the figure: 1. plunger pump body; 2. housing mounting connection frame; 3. reduction motor; 4. housing bracket; 5. sealing sleeve; 6. motor terminal box; 7. sealing flange; 8. metal filter screen; 9. heat dissipation and ventilation plate; 10. sealing end cover; 11. wiring limit plate; 12. connecting nut; 13. U-type connecting frame; 14. soft rubber pad; 15. stud section; 16. wiring mounting hole; 17. annular mounting sleeve; 18. silencer cotton ring; 19. connecting pad. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The utility model provides Figure 1-3 A plunger pump is shown;

[0018] Embodiment: The plunger pump includes a plunger pump body 1, a shell mounting connection frame 2, a reduction motor 3 and a motor terminal box 6. A connecting pad 19 is provided on one side of the shell mounting connection frame 2. One end of the connecting pad 19 is threadedly connected to the plunger pump body 1. A shell bracket 4 is provided on the other side of the shell mounting connection frame 2. The shell bracket 4 is installed with the shell of the reduction motor 3. The motor terminal box 6 is fixedly arranged on one side of the reduction motor 3. Two symmetrical wiring mounting holes 16 are provided on one side of the motor terminal box 6. A wiring limit plate 11 is provided on the top of one side of the motor terminal box 6. A U-shaped connecting frame 13 is provided at the two hole positions of the wiring limit plate 11. Stud sections 15 are provided at both ends of the U-shaped connecting frame 13. The two stud sections 15 pass through the corresponding hole positions respectively and are provided with connecting nuts 12.

[0019] In this embodiment, in order to better install and reduce the noise of the reduction motor 3, an annular mounting sleeve 17 is provided at the center of the other side of the shell mounting connecting frame 2, and a silencer cotton ring 18 is provided on the outer ring of the annular mounting sleeve 17.

[0020] In this embodiment, in order to better connect and improve the connection sealing and connection accuracy, a metal filter screen 8 is set at the same time, which has a good filtering effect and reduces the entry of impurities into the plunger pump body 1. Sealing flanges 7 are provided at the inlet and outlet of the plunger pump body 1, and sealing sleeves 5 are provided at one end of the two sealing flanges 7; a metal filter screen 8 is provided inside the sealing sleeve 5, and the thickness of the metal filter screen 8 is equal to the diameter of the sealing sleeve 5.

[0021] In this embodiment, in order to better dissipate the heat of the reduction motor 3, improve the heat dissipation performance of the reduction motor 3, and make the reduction motor 3 have good thermal conductivity during operation, a sealing end cover 10 is provided at one end of the reduction motor 3, and a heat dissipation breathable plate 9 is provided on one side of the sealing end cover 10.

[0022] In this embodiment, in order to reduce the influence of the rigidity of the U-shaped connecting frame 13 on the wiring and avoid the wiring damage, a soft rubber pad 14 is provided at the crossbeam of the U-shaped connecting frame 13 .

[0023] Working principle of the utility model: the plunger pump is composed of a plunger pump body 1, a shell mounting connection frame 2, a reduction motor 3 and a motor terminal box 6 and other structures, wherein the plunger pump body 1 is a straight shaft inclined plate type of the prior art, a connecting pad 19 is arranged on one side of the shell mounting connection frame 2 and is threadedly connected to the plunger pump body 1, a shell bracket 4 is arranged on the other side of the shell mounting connection frame 2, the shell bracket 4 is installed with the shell of the reduction motor 3, the motor terminal box 6 is fixedly arranged on one side of the reduction motor 3, two symmetrical wiring mounting holes 16 are arranged on one side of the motor terminal box 6, a wiring limit plate 11 is arranged on the top of one side of the motor terminal box 6, a U-shaped connecting frame 13 is arranged at the two hole positions of the wiring limit plate 11, stud sections 15 are arranged at both ends of the U-shaped connecting frame 13, the two stud sections 15 respectively pass through the corresponding hole positions and are provided with connecting nuts 12, which can limit the power wiring, improve the stability of the power wiring, prevent the wiring from loosening, and avoid poor contact.

[0024] Further, such as Figure 1 and Figure 2 As shown, sealing flanges 7 are provided at the oil inlet and outlet of the plunger pump body 1, and sealing sleeves 5 are provided at one end of the two sealing flanges 7; a metal filter screen 8 is provided inside the sealing sleeve 5, and the thickness of the metal filter screen 8 is equal to the diameter of the sealing sleeve 5, so as to improve the connection sealing and connection accuracy. At the same time, the metal filter screen 8 is provided, which has a good filtering effect and reduces the impurities entering the plunger pump body 1.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A plunger pump, comprising a plunger pump body (1), a housing mounting connection frame (2), a reduction motor (3) and a motor junction box (6), characterized in that: A connection pad (19) is provided on one side of the housing mounting connection frame (2), one end of the connection pad (19) is threadedly connected to the plunger pump body (1), a housing bracket (4) is provided on the other side of the housing mounting connection frame (2), the housing bracket (4) is mounted on the housing of the reduction motor (3), the motor terminal box (6) is fixedly arranged on one side of the reduction motor (3), one side of the motor terminal box (6) is provided with two symmetrical wiring installation holes (16), a wiring limit plate (11) is provided on the top of one side of the motor terminal box (6), two holes of the wiring limit plate (11) are provided with a U-shaped connection frame (13), both ends of the U-shaped connection frame (13) are provided with stud sections (15), the two stud sections (15) respectively pass through the corresponding holes and are provided with connection nuts (12).

2. A plunger pump according to claim 1, characterized in that: An annular mounting sleeve (17) is arranged at the center of the other side of the shell mounting connection frame (2), and a sound-absorbing cotton ring (18) is arranged on the outer ring of the annular mounting sleeve (17).

3. A plunger pump according to claim 1, characterized in that: The oil inlet and outlet of the plunger pump body (1) are both provided with sealing flanges (7), and one end of the two sealing flanges (7) is provided with a sealing sleeve (5).

4. A plunger pump according to claim 3, characterized in that: A metal filter screen (8) is arranged inside the sealing sleeve (5), and the thickness of the metal filter screen (8) is equal to the diameter of the sealing sleeve (5).

5. A plunger pump according to claim 1, characterized in that: A sealing end cover (10) is provided at one end of the reduction motor (3), and a heat dissipation and ventilation plate (9) is provided at one side of the sealing end cover (10).

6. A plunger pump according to claim 1, characterized in that: A soft rubber pad (14) is provided at the crossbeam of the U-shaped connecting frame (13).

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